1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2009 Nokia Corporation
4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 *
6 * Some code and ideas taken from drivers/video/omap/ driver
7 * by Imre Deak.
8 */
9
10 #define DSS_SUBSYS_NAME "DISPC"
11
12 #include <linux/kernel.h>
13 #include <linux/dma-mapping.h>
14 #include <linux/vmalloc.h>
15 #include <linux/export.h>
16 #include <linux/clk.h>
17 #include <linux/io.h>
18 #include <linux/jiffies.h>
19 #include <linux/seq_file.h>
20 #include <linux/delay.h>
21 #include <linux/workqueue.h>
22 #include <linux/hardirq.h>
23 #include <linux/platform_device.h>
24 #include <linux/pm_runtime.h>
25 #include <linux/sizes.h>
26 #include <linux/mfd/syscon.h>
27 #include <linux/regmap.h>
28 #include <linux/of.h>
29 #include <linux/of_device.h>
30 #include <linux/component.h>
31 #include <linux/sys_soc.h>
32 #include <drm/drm_fourcc.h>
33 #include <drm/drm_blend.h>
34
35 #include "omapdss.h"
36 #include "dss.h"
37 #include "dispc.h"
38
39 struct dispc_device;
40
41 /* DISPC */
42 #define DISPC_SZ_REGS SZ_4K
43
44 enum omap_burst_size {
45 BURST_SIZE_X2 = 0,
46 BURST_SIZE_X4 = 1,
47 BURST_SIZE_X8 = 2,
48 };
49
50 #define REG_GET(dispc, idx, start, end) \
51 FLD_GET(dispc_read_reg(dispc, idx), start, end)
52
53 #define REG_FLD_MOD(dispc, idx, val, start, end) \
54 dispc_write_reg(dispc, idx, \
55 FLD_MOD(dispc_read_reg(dispc, idx), val, start, end))
56
57 /* DISPC has feature id */
58 enum dispc_feature_id {
59 FEAT_LCDENABLEPOL,
60 FEAT_LCDENABLESIGNAL,
61 FEAT_PCKFREEENABLE,
62 FEAT_FUNCGATED,
63 FEAT_MGR_LCD2,
64 FEAT_MGR_LCD3,
65 FEAT_LINEBUFFERSPLIT,
66 FEAT_ROWREPEATENABLE,
67 FEAT_RESIZECONF,
68 /* Independent core clk divider */
69 FEAT_CORE_CLK_DIV,
70 FEAT_HANDLE_UV_SEPARATE,
71 FEAT_ATTR2,
72 FEAT_CPR,
73 FEAT_PRELOAD,
74 FEAT_FIR_COEF_V,
75 FEAT_ALPHA_FIXED_ZORDER,
76 FEAT_ALPHA_FREE_ZORDER,
77 FEAT_FIFO_MERGE,
78 /* An unknown HW bug causing the normal FIFO thresholds not to work */
79 FEAT_OMAP3_DSI_FIFO_BUG,
80 FEAT_BURST_2D,
81 FEAT_MFLAG,
82 };
83
84 struct dispc_features {
85 u8 sw_start;
86 u8 fp_start;
87 u8 bp_start;
88 u16 sw_max;
89 u16 vp_max;
90 u16 hp_max;
91 u8 mgr_width_start;
92 u8 mgr_height_start;
93 u16 mgr_width_max;
94 u16 mgr_height_max;
95 unsigned long max_lcd_pclk;
96 unsigned long max_tv_pclk;
97 unsigned int max_downscale;
98 unsigned int max_line_width;
99 unsigned int min_pcd;
100 int (*calc_scaling)(struct dispc_device *dispc,
101 unsigned long pclk, unsigned long lclk,
102 const struct videomode *vm,
103 u16 width, u16 height, u16 out_width, u16 out_height,
104 u32 fourcc, bool *five_taps,
105 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
106 u16 pos_x, unsigned long *core_clk, bool mem_to_mem);
107 unsigned long (*calc_core_clk) (unsigned long pclk,
108 u16 width, u16 height, u16 out_width, u16 out_height,
109 bool mem_to_mem);
110 u8 num_fifos;
111 const enum dispc_feature_id *features;
112 unsigned int num_features;
113 const struct dss_reg_field *reg_fields;
114 const unsigned int num_reg_fields;
115 const enum omap_overlay_caps *overlay_caps;
116 const u32 **supported_color_modes;
117 const u32 *supported_scaler_color_modes;
118 unsigned int num_mgrs;
119 unsigned int num_ovls;
120 unsigned int buffer_size_unit;
121 unsigned int burst_size_unit;
122
123 /* swap GFX & WB fifos */
124 bool gfx_fifo_workaround:1;
125
126 /* no DISPC_IRQ_FRAMEDONETV on this SoC */
127 bool no_framedone_tv:1;
128
129 /* revert to the OMAP4 mechanism of DISPC Smart Standby operation */
130 bool mstandby_workaround:1;
131
132 bool set_max_preload:1;
133
134 /* PIXEL_INC is not added to the last pixel of a line */
135 bool last_pixel_inc_missing:1;
136
137 /* POL_FREQ has ALIGN bit */
138 bool supports_sync_align:1;
139
140 bool has_writeback:1;
141
142 bool supports_double_pixel:1;
143
144 /*
145 * Field order for VENC is different than HDMI. We should handle this in
146 * some intelligent manner, but as the SoCs have either HDMI or VENC,
147 * never both, we can just use this flag for now.
148 */
149 bool reverse_ilace_field_order:1;
150
151 bool has_gamma_table:1;
152
153 bool has_gamma_i734_bug:1;
154 };
155
156 #define DISPC_MAX_NR_FIFOS 5
157 #define DISPC_MAX_CHANNEL_GAMMA 4
158
159 struct dispc_device {
160 struct platform_device *pdev;
161 void __iomem *base;
162 struct dss_device *dss;
163
164 struct dss_debugfs_entry *debugfs;
165
166 int irq;
167 irq_handler_t user_handler;
168 void *user_data;
169
170 unsigned long core_clk_rate;
171 unsigned long tv_pclk_rate;
172
173 u32 fifo_size[DISPC_MAX_NR_FIFOS];
174 /* maps which plane is using a fifo. fifo-id -> plane-id */
175 int fifo_assignment[DISPC_MAX_NR_FIFOS];
176
177 bool ctx_valid;
178 u32 ctx[DISPC_SZ_REGS / sizeof(u32)];
179
180 u32 *gamma_table[DISPC_MAX_CHANNEL_GAMMA];
181
182 const struct dispc_features *feat;
183
184 bool is_enabled;
185
186 struct regmap *syscon_pol;
187 u32 syscon_pol_offset;
188 };
189
190 enum omap_color_component {
191 /* used for all color formats for OMAP3 and earlier
192 * and for RGB and Y color component on OMAP4
193 */
194 DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0,
195 /* used for UV component for
196 * DRM_FORMAT_YUYV, DRM_FORMAT_UYVY, DRM_FORMAT_NV12
197 * color formats on OMAP4
198 */
199 DISPC_COLOR_COMPONENT_UV = 1 << 1,
200 };
201
202 enum mgr_reg_fields {
203 DISPC_MGR_FLD_ENABLE,
204 DISPC_MGR_FLD_STNTFT,
205 DISPC_MGR_FLD_GO,
206 DISPC_MGR_FLD_TFTDATALINES,
207 DISPC_MGR_FLD_STALLMODE,
208 DISPC_MGR_FLD_TCKENABLE,
209 DISPC_MGR_FLD_TCKSELECTION,
210 DISPC_MGR_FLD_CPR,
211 DISPC_MGR_FLD_FIFOHANDCHECK,
212 /* used to maintain a count of the above fields */
213 DISPC_MGR_FLD_NUM,
214 };
215
216 /* DISPC register field id */
217 enum dispc_feat_reg_field {
218 FEAT_REG_FIRHINC,
219 FEAT_REG_FIRVINC,
220 FEAT_REG_FIFOHIGHTHRESHOLD,
221 FEAT_REG_FIFOLOWTHRESHOLD,
222 FEAT_REG_FIFOSIZE,
223 FEAT_REG_HORIZONTALACCU,
224 FEAT_REG_VERTICALACCU,
225 };
226
227 struct dispc_reg_field {
228 u16 reg;
229 u8 high;
230 u8 low;
231 };
232
233 struct dispc_gamma_desc {
234 u32 len;
235 u32 bits;
236 u16 reg;
237 bool has_index;
238 };
239
240 static const struct {
241 const char *name;
242 u32 vsync_irq;
243 u32 framedone_irq;
244 u32 sync_lost_irq;
245 struct dispc_gamma_desc gamma;
246 struct dispc_reg_field reg_desc[DISPC_MGR_FLD_NUM];
247 } mgr_desc[] = {
248 [OMAP_DSS_CHANNEL_LCD] = {
249 .name = "LCD",
250 .vsync_irq = DISPC_IRQ_VSYNC,
251 .framedone_irq = DISPC_IRQ_FRAMEDONE,
252 .sync_lost_irq = DISPC_IRQ_SYNC_LOST,
253 .gamma = {
254 .len = 256,
255 .bits = 8,
256 .reg = DISPC_GAMMA_TABLE0,
257 .has_index = true,
258 },
259 .reg_desc = {
260 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 },
261 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 },
262 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 },
263 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 },
264 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 },
265 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 },
266 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 },
267 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 },
268 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
269 },
270 },
271 [OMAP_DSS_CHANNEL_DIGIT] = {
272 .name = "DIGIT",
273 .vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN,
274 .framedone_irq = DISPC_IRQ_FRAMEDONETV,
275 .sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT,
276 .gamma = {
277 .len = 1024,
278 .bits = 10,
279 .reg = DISPC_GAMMA_TABLE2,
280 .has_index = false,
281 },
282 .reg_desc = {
283 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 },
284 [DISPC_MGR_FLD_STNTFT] = { },
285 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 },
286 [DISPC_MGR_FLD_TFTDATALINES] = { },
287 [DISPC_MGR_FLD_STALLMODE] = { },
288 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 },
289 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 },
290 [DISPC_MGR_FLD_CPR] = { },
291 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
292 },
293 },
294 [OMAP_DSS_CHANNEL_LCD2] = {
295 .name = "LCD2",
296 .vsync_irq = DISPC_IRQ_VSYNC2,
297 .framedone_irq = DISPC_IRQ_FRAMEDONE2,
298 .sync_lost_irq = DISPC_IRQ_SYNC_LOST2,
299 .gamma = {
300 .len = 256,
301 .bits = 8,
302 .reg = DISPC_GAMMA_TABLE1,
303 .has_index = true,
304 },
305 .reg_desc = {
306 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 },
307 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 },
308 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 },
309 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 },
310 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 },
311 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 },
312 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 },
313 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 },
314 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 },
315 },
316 },
317 [OMAP_DSS_CHANNEL_LCD3] = {
318 .name = "LCD3",
319 .vsync_irq = DISPC_IRQ_VSYNC3,
320 .framedone_irq = DISPC_IRQ_FRAMEDONE3,
321 .sync_lost_irq = DISPC_IRQ_SYNC_LOST3,
322 .gamma = {
323 .len = 256,
324 .bits = 8,
325 .reg = DISPC_GAMMA_TABLE3,
326 .has_index = true,
327 },
328 .reg_desc = {
329 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 },
330 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 },
331 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 },
332 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 },
333 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 },
334 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 },
335 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 },
336 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 },
337 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 },
338 },
339 },
340 };
341
342 static unsigned long dispc_fclk_rate(struct dispc_device *dispc);
343 static unsigned long dispc_core_clk_rate(struct dispc_device *dispc);
344 static unsigned long dispc_mgr_lclk_rate(struct dispc_device *dispc,
345 enum omap_channel channel);
346 static unsigned long dispc_mgr_pclk_rate(struct dispc_device *dispc,
347 enum omap_channel channel);
348
349 static unsigned long dispc_plane_pclk_rate(struct dispc_device *dispc,
350 enum omap_plane_id plane);
351 static unsigned long dispc_plane_lclk_rate(struct dispc_device *dispc,
352 enum omap_plane_id plane);
353
dispc_write_reg(struct dispc_device * dispc,u16 idx,u32 val)354 static inline void dispc_write_reg(struct dispc_device *dispc, u16 idx, u32 val)
355 {
356 __raw_writel(val, dispc->base + idx);
357 }
358
dispc_read_reg(struct dispc_device * dispc,u16 idx)359 static inline u32 dispc_read_reg(struct dispc_device *dispc, u16 idx)
360 {
361 return __raw_readl(dispc->base + idx);
362 }
363
mgr_fld_read(struct dispc_device * dispc,enum omap_channel channel,enum mgr_reg_fields regfld)364 static u32 mgr_fld_read(struct dispc_device *dispc, enum omap_channel channel,
365 enum mgr_reg_fields regfld)
366 {
367 const struct dispc_reg_field *rfld = &mgr_desc[channel].reg_desc[regfld];
368
369 return REG_GET(dispc, rfld->reg, rfld->high, rfld->low);
370 }
371
mgr_fld_write(struct dispc_device * dispc,enum omap_channel channel,enum mgr_reg_fields regfld,int val)372 static void mgr_fld_write(struct dispc_device *dispc, enum omap_channel channel,
373 enum mgr_reg_fields regfld, int val)
374 {
375 const struct dispc_reg_field *rfld = &mgr_desc[channel].reg_desc[regfld];
376
377 REG_FLD_MOD(dispc, rfld->reg, val, rfld->high, rfld->low);
378 }
379
dispc_get_num_ovls(struct dispc_device * dispc)380 int dispc_get_num_ovls(struct dispc_device *dispc)
381 {
382 return dispc->feat->num_ovls;
383 }
384
dispc_get_num_mgrs(struct dispc_device * dispc)385 int dispc_get_num_mgrs(struct dispc_device *dispc)
386 {
387 return dispc->feat->num_mgrs;
388 }
389
dispc_get_reg_field(struct dispc_device * dispc,enum dispc_feat_reg_field id,u8 * start,u8 * end)390 static void dispc_get_reg_field(struct dispc_device *dispc,
391 enum dispc_feat_reg_field id,
392 u8 *start, u8 *end)
393 {
394 BUG_ON(id >= dispc->feat->num_reg_fields);
395
396 *start = dispc->feat->reg_fields[id].start;
397 *end = dispc->feat->reg_fields[id].end;
398 }
399
dispc_has_feature(struct dispc_device * dispc,enum dispc_feature_id id)400 static bool dispc_has_feature(struct dispc_device *dispc,
401 enum dispc_feature_id id)
402 {
403 unsigned int i;
404
405 for (i = 0; i < dispc->feat->num_features; i++) {
406 if (dispc->feat->features[i] == id)
407 return true;
408 }
409
410 return false;
411 }
412
413 #define SR(dispc, reg) \
414 dispc->ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(dispc, DISPC_##reg)
415 #define RR(dispc, reg) \
416 dispc_write_reg(dispc, DISPC_##reg, dispc->ctx[DISPC_##reg / sizeof(u32)])
417
dispc_save_context(struct dispc_device * dispc)418 static void dispc_save_context(struct dispc_device *dispc)
419 {
420 int i, j;
421
422 DSSDBG("dispc_save_context\n");
423
424 SR(dispc, IRQENABLE);
425 SR(dispc, CONTROL);
426 SR(dispc, CONFIG);
427 SR(dispc, LINE_NUMBER);
428 if (dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER) ||
429 dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
430 SR(dispc, GLOBAL_ALPHA);
431 if (dispc_has_feature(dispc, FEAT_MGR_LCD2)) {
432 SR(dispc, CONTROL2);
433 SR(dispc, CONFIG2);
434 }
435 if (dispc_has_feature(dispc, FEAT_MGR_LCD3)) {
436 SR(dispc, CONTROL3);
437 SR(dispc, CONFIG3);
438 }
439
440 for (i = 0; i < dispc_get_num_mgrs(dispc); i++) {
441 SR(dispc, DEFAULT_COLOR(i));
442 SR(dispc, TRANS_COLOR(i));
443 SR(dispc, SIZE_MGR(i));
444 if (i == OMAP_DSS_CHANNEL_DIGIT)
445 continue;
446 SR(dispc, TIMING_H(i));
447 SR(dispc, TIMING_V(i));
448 SR(dispc, POL_FREQ(i));
449 SR(dispc, DIVISORo(i));
450
451 SR(dispc, DATA_CYCLE1(i));
452 SR(dispc, DATA_CYCLE2(i));
453 SR(dispc, DATA_CYCLE3(i));
454
455 if (dispc_has_feature(dispc, FEAT_CPR)) {
456 SR(dispc, CPR_COEF_R(i));
457 SR(dispc, CPR_COEF_G(i));
458 SR(dispc, CPR_COEF_B(i));
459 }
460 }
461
462 for (i = 0; i < dispc_get_num_ovls(dispc); i++) {
463 SR(dispc, OVL_BA0(i));
464 SR(dispc, OVL_BA1(i));
465 SR(dispc, OVL_POSITION(i));
466 SR(dispc, OVL_SIZE(i));
467 SR(dispc, OVL_ATTRIBUTES(i));
468 SR(dispc, OVL_FIFO_THRESHOLD(i));
469 SR(dispc, OVL_ROW_INC(i));
470 SR(dispc, OVL_PIXEL_INC(i));
471 if (dispc_has_feature(dispc, FEAT_PRELOAD))
472 SR(dispc, OVL_PRELOAD(i));
473 if (i == OMAP_DSS_GFX) {
474 SR(dispc, OVL_WINDOW_SKIP(i));
475 SR(dispc, OVL_TABLE_BA(i));
476 continue;
477 }
478 SR(dispc, OVL_FIR(i));
479 SR(dispc, OVL_PICTURE_SIZE(i));
480 SR(dispc, OVL_ACCU0(i));
481 SR(dispc, OVL_ACCU1(i));
482
483 for (j = 0; j < 8; j++)
484 SR(dispc, OVL_FIR_COEF_H(i, j));
485
486 for (j = 0; j < 8; j++)
487 SR(dispc, OVL_FIR_COEF_HV(i, j));
488
489 for (j = 0; j < 5; j++)
490 SR(dispc, OVL_CONV_COEF(i, j));
491
492 if (dispc_has_feature(dispc, FEAT_FIR_COEF_V)) {
493 for (j = 0; j < 8; j++)
494 SR(dispc, OVL_FIR_COEF_V(i, j));
495 }
496
497 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
498 SR(dispc, OVL_BA0_UV(i));
499 SR(dispc, OVL_BA1_UV(i));
500 SR(dispc, OVL_FIR2(i));
501 SR(dispc, OVL_ACCU2_0(i));
502 SR(dispc, OVL_ACCU2_1(i));
503
504 for (j = 0; j < 8; j++)
505 SR(dispc, OVL_FIR_COEF_H2(i, j));
506
507 for (j = 0; j < 8; j++)
508 SR(dispc, OVL_FIR_COEF_HV2(i, j));
509
510 for (j = 0; j < 8; j++)
511 SR(dispc, OVL_FIR_COEF_V2(i, j));
512 }
513 if (dispc_has_feature(dispc, FEAT_ATTR2))
514 SR(dispc, OVL_ATTRIBUTES2(i));
515 }
516
517 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV))
518 SR(dispc, DIVISOR);
519
520 dispc->ctx_valid = true;
521
522 DSSDBG("context saved\n");
523 }
524
dispc_restore_context(struct dispc_device * dispc)525 static void dispc_restore_context(struct dispc_device *dispc)
526 {
527 int i, j;
528
529 DSSDBG("dispc_restore_context\n");
530
531 if (!dispc->ctx_valid)
532 return;
533
534 /*RR(dispc, IRQENABLE);*/
535 /*RR(dispc, CONTROL);*/
536 RR(dispc, CONFIG);
537 RR(dispc, LINE_NUMBER);
538 if (dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER) ||
539 dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
540 RR(dispc, GLOBAL_ALPHA);
541 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
542 RR(dispc, CONFIG2);
543 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
544 RR(dispc, CONFIG3);
545
546 for (i = 0; i < dispc_get_num_mgrs(dispc); i++) {
547 RR(dispc, DEFAULT_COLOR(i));
548 RR(dispc, TRANS_COLOR(i));
549 RR(dispc, SIZE_MGR(i));
550 if (i == OMAP_DSS_CHANNEL_DIGIT)
551 continue;
552 RR(dispc, TIMING_H(i));
553 RR(dispc, TIMING_V(i));
554 RR(dispc, POL_FREQ(i));
555 RR(dispc, DIVISORo(i));
556
557 RR(dispc, DATA_CYCLE1(i));
558 RR(dispc, DATA_CYCLE2(i));
559 RR(dispc, DATA_CYCLE3(i));
560
561 if (dispc_has_feature(dispc, FEAT_CPR)) {
562 RR(dispc, CPR_COEF_R(i));
563 RR(dispc, CPR_COEF_G(i));
564 RR(dispc, CPR_COEF_B(i));
565 }
566 }
567
568 for (i = 0; i < dispc_get_num_ovls(dispc); i++) {
569 RR(dispc, OVL_BA0(i));
570 RR(dispc, OVL_BA1(i));
571 RR(dispc, OVL_POSITION(i));
572 RR(dispc, OVL_SIZE(i));
573 RR(dispc, OVL_ATTRIBUTES(i));
574 RR(dispc, OVL_FIFO_THRESHOLD(i));
575 RR(dispc, OVL_ROW_INC(i));
576 RR(dispc, OVL_PIXEL_INC(i));
577 if (dispc_has_feature(dispc, FEAT_PRELOAD))
578 RR(dispc, OVL_PRELOAD(i));
579 if (i == OMAP_DSS_GFX) {
580 RR(dispc, OVL_WINDOW_SKIP(i));
581 RR(dispc, OVL_TABLE_BA(i));
582 continue;
583 }
584 RR(dispc, OVL_FIR(i));
585 RR(dispc, OVL_PICTURE_SIZE(i));
586 RR(dispc, OVL_ACCU0(i));
587 RR(dispc, OVL_ACCU1(i));
588
589 for (j = 0; j < 8; j++)
590 RR(dispc, OVL_FIR_COEF_H(i, j));
591
592 for (j = 0; j < 8; j++)
593 RR(dispc, OVL_FIR_COEF_HV(i, j));
594
595 for (j = 0; j < 5; j++)
596 RR(dispc, OVL_CONV_COEF(i, j));
597
598 if (dispc_has_feature(dispc, FEAT_FIR_COEF_V)) {
599 for (j = 0; j < 8; j++)
600 RR(dispc, OVL_FIR_COEF_V(i, j));
601 }
602
603 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
604 RR(dispc, OVL_BA0_UV(i));
605 RR(dispc, OVL_BA1_UV(i));
606 RR(dispc, OVL_FIR2(i));
607 RR(dispc, OVL_ACCU2_0(i));
608 RR(dispc, OVL_ACCU2_1(i));
609
610 for (j = 0; j < 8; j++)
611 RR(dispc, OVL_FIR_COEF_H2(i, j));
612
613 for (j = 0; j < 8; j++)
614 RR(dispc, OVL_FIR_COEF_HV2(i, j));
615
616 for (j = 0; j < 8; j++)
617 RR(dispc, OVL_FIR_COEF_V2(i, j));
618 }
619 if (dispc_has_feature(dispc, FEAT_ATTR2))
620 RR(dispc, OVL_ATTRIBUTES2(i));
621 }
622
623 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV))
624 RR(dispc, DIVISOR);
625
626 /* enable last, because LCD & DIGIT enable are here */
627 RR(dispc, CONTROL);
628 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
629 RR(dispc, CONTROL2);
630 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
631 RR(dispc, CONTROL3);
632 /* clear spurious SYNC_LOST_DIGIT interrupts */
633 dispc_clear_irqstatus(dispc, DISPC_IRQ_SYNC_LOST_DIGIT);
634
635 /*
636 * enable last so IRQs won't trigger before
637 * the context is fully restored
638 */
639 RR(dispc, IRQENABLE);
640
641 DSSDBG("context restored\n");
642 }
643
644 #undef SR
645 #undef RR
646
dispc_runtime_get(struct dispc_device * dispc)647 int dispc_runtime_get(struct dispc_device *dispc)
648 {
649 int r;
650
651 DSSDBG("dispc_runtime_get\n");
652
653 r = pm_runtime_get_sync(&dispc->pdev->dev);
654 if (WARN_ON(r < 0)) {
655 pm_runtime_put_noidle(&dispc->pdev->dev);
656 return r;
657 }
658 return 0;
659 }
660
dispc_runtime_put(struct dispc_device * dispc)661 void dispc_runtime_put(struct dispc_device *dispc)
662 {
663 int r;
664
665 DSSDBG("dispc_runtime_put\n");
666
667 r = pm_runtime_put_sync(&dispc->pdev->dev);
668 WARN_ON(r < 0 && r != -ENOSYS);
669 }
670
dispc_mgr_get_vsync_irq(struct dispc_device * dispc,enum omap_channel channel)671 u32 dispc_mgr_get_vsync_irq(struct dispc_device *dispc,
672 enum omap_channel channel)
673 {
674 return mgr_desc[channel].vsync_irq;
675 }
676
dispc_mgr_get_framedone_irq(struct dispc_device * dispc,enum omap_channel channel)677 u32 dispc_mgr_get_framedone_irq(struct dispc_device *dispc,
678 enum omap_channel channel)
679 {
680 if (channel == OMAP_DSS_CHANNEL_DIGIT && dispc->feat->no_framedone_tv)
681 return 0;
682
683 return mgr_desc[channel].framedone_irq;
684 }
685
dispc_mgr_get_sync_lost_irq(struct dispc_device * dispc,enum omap_channel channel)686 u32 dispc_mgr_get_sync_lost_irq(struct dispc_device *dispc,
687 enum omap_channel channel)
688 {
689 return mgr_desc[channel].sync_lost_irq;
690 }
691
dispc_wb_get_framedone_irq(struct dispc_device * dispc)692 u32 dispc_wb_get_framedone_irq(struct dispc_device *dispc)
693 {
694 return DISPC_IRQ_FRAMEDONEWB;
695 }
696
dispc_mgr_enable(struct dispc_device * dispc,enum omap_channel channel,bool enable)697 void dispc_mgr_enable(struct dispc_device *dispc,
698 enum omap_channel channel, bool enable)
699 {
700 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_ENABLE, enable);
701 /* flush posted write */
702 mgr_fld_read(dispc, channel, DISPC_MGR_FLD_ENABLE);
703 }
704
dispc_mgr_is_enabled(struct dispc_device * dispc,enum omap_channel channel)705 static bool dispc_mgr_is_enabled(struct dispc_device *dispc,
706 enum omap_channel channel)
707 {
708 return !!mgr_fld_read(dispc, channel, DISPC_MGR_FLD_ENABLE);
709 }
710
dispc_mgr_go_busy(struct dispc_device * dispc,enum omap_channel channel)711 bool dispc_mgr_go_busy(struct dispc_device *dispc,
712 enum omap_channel channel)
713 {
714 return mgr_fld_read(dispc, channel, DISPC_MGR_FLD_GO) == 1;
715 }
716
dispc_mgr_go(struct dispc_device * dispc,enum omap_channel channel)717 void dispc_mgr_go(struct dispc_device *dispc, enum omap_channel channel)
718 {
719 WARN_ON(!dispc_mgr_is_enabled(dispc, channel));
720 WARN_ON(dispc_mgr_go_busy(dispc, channel));
721
722 DSSDBG("GO %s\n", mgr_desc[channel].name);
723
724 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_GO, 1);
725 }
726
dispc_wb_go_busy(struct dispc_device * dispc)727 bool dispc_wb_go_busy(struct dispc_device *dispc)
728 {
729 return REG_GET(dispc, DISPC_CONTROL2, 6, 6) == 1;
730 }
731
dispc_wb_go(struct dispc_device * dispc)732 void dispc_wb_go(struct dispc_device *dispc)
733 {
734 enum omap_plane_id plane = OMAP_DSS_WB;
735 bool enable, go;
736
737 enable = REG_GET(dispc, DISPC_OVL_ATTRIBUTES(plane), 0, 0) == 1;
738
739 if (!enable)
740 return;
741
742 go = REG_GET(dispc, DISPC_CONTROL2, 6, 6) == 1;
743 if (go) {
744 DSSERR("GO bit not down for WB\n");
745 return;
746 }
747
748 REG_FLD_MOD(dispc, DISPC_CONTROL2, 1, 6, 6);
749 }
750
dispc_ovl_write_firh_reg(struct dispc_device * dispc,enum omap_plane_id plane,int reg,u32 value)751 static void dispc_ovl_write_firh_reg(struct dispc_device *dispc,
752 enum omap_plane_id plane, int reg,
753 u32 value)
754 {
755 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_H(plane, reg), value);
756 }
757
dispc_ovl_write_firhv_reg(struct dispc_device * dispc,enum omap_plane_id plane,int reg,u32 value)758 static void dispc_ovl_write_firhv_reg(struct dispc_device *dispc,
759 enum omap_plane_id plane, int reg,
760 u32 value)
761 {
762 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_HV(plane, reg), value);
763 }
764
dispc_ovl_write_firv_reg(struct dispc_device * dispc,enum omap_plane_id plane,int reg,u32 value)765 static void dispc_ovl_write_firv_reg(struct dispc_device *dispc,
766 enum omap_plane_id plane, int reg,
767 u32 value)
768 {
769 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_V(plane, reg), value);
770 }
771
dispc_ovl_write_firh2_reg(struct dispc_device * dispc,enum omap_plane_id plane,int reg,u32 value)772 static void dispc_ovl_write_firh2_reg(struct dispc_device *dispc,
773 enum omap_plane_id plane, int reg,
774 u32 value)
775 {
776 BUG_ON(plane == OMAP_DSS_GFX);
777
778 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_H2(plane, reg), value);
779 }
780
dispc_ovl_write_firhv2_reg(struct dispc_device * dispc,enum omap_plane_id plane,int reg,u32 value)781 static void dispc_ovl_write_firhv2_reg(struct dispc_device *dispc,
782 enum omap_plane_id plane, int reg,
783 u32 value)
784 {
785 BUG_ON(plane == OMAP_DSS_GFX);
786
787 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
788 }
789
dispc_ovl_write_firv2_reg(struct dispc_device * dispc,enum omap_plane_id plane,int reg,u32 value)790 static void dispc_ovl_write_firv2_reg(struct dispc_device *dispc,
791 enum omap_plane_id plane, int reg,
792 u32 value)
793 {
794 BUG_ON(plane == OMAP_DSS_GFX);
795
796 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_V2(plane, reg), value);
797 }
798
dispc_ovl_set_scale_coef(struct dispc_device * dispc,enum omap_plane_id plane,int fir_hinc,int fir_vinc,int five_taps,enum omap_color_component color_comp)799 static void dispc_ovl_set_scale_coef(struct dispc_device *dispc,
800 enum omap_plane_id plane, int fir_hinc,
801 int fir_vinc, int five_taps,
802 enum omap_color_component color_comp)
803 {
804 const struct dispc_coef *h_coef, *v_coef;
805 int i;
806
807 h_coef = dispc_ovl_get_scale_coef(fir_hinc, true);
808 v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps);
809
810 if (!h_coef || !v_coef) {
811 dev_err(&dispc->pdev->dev, "%s: failed to find scale coefs\n",
812 __func__);
813 return;
814 }
815
816 for (i = 0; i < 8; i++) {
817 u32 h, hv;
818
819 h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0)
820 | FLD_VAL(h_coef[i].hc1_vc0, 15, 8)
821 | FLD_VAL(h_coef[i].hc2_vc1, 23, 16)
822 | FLD_VAL(h_coef[i].hc3_vc2, 31, 24);
823 hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0)
824 | FLD_VAL(v_coef[i].hc1_vc0, 15, 8)
825 | FLD_VAL(v_coef[i].hc2_vc1, 23, 16)
826 | FLD_VAL(v_coef[i].hc3_vc2, 31, 24);
827
828 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
829 dispc_ovl_write_firh_reg(dispc, plane, i, h);
830 dispc_ovl_write_firhv_reg(dispc, plane, i, hv);
831 } else {
832 dispc_ovl_write_firh2_reg(dispc, plane, i, h);
833 dispc_ovl_write_firhv2_reg(dispc, plane, i, hv);
834 }
835
836 }
837
838 if (five_taps) {
839 for (i = 0; i < 8; i++) {
840 u32 v;
841 v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0)
842 | FLD_VAL(v_coef[i].hc4_vc22, 15, 8);
843 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
844 dispc_ovl_write_firv_reg(dispc, plane, i, v);
845 else
846 dispc_ovl_write_firv2_reg(dispc, plane, i, v);
847 }
848 }
849 }
850
851 struct csc_coef_yuv2rgb {
852 int ry, rcb, rcr, gy, gcb, gcr, by, bcb, bcr;
853 bool full_range;
854 };
855
856 struct csc_coef_rgb2yuv {
857 int yr, yg, yb, cbr, cbg, cbb, crr, crg, crb;
858 bool full_range;
859 };
860
dispc_ovl_write_color_conv_coef(struct dispc_device * dispc,enum omap_plane_id plane,const struct csc_coef_yuv2rgb * ct)861 static void dispc_ovl_write_color_conv_coef(struct dispc_device *dispc,
862 enum omap_plane_id plane,
863 const struct csc_coef_yuv2rgb *ct)
864 {
865 #define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
866
867 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry));
868 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb));
869 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr));
870 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by));
871 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb));
872
873 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11);
874
875 #undef CVAL
876 }
877
878 /* YUV -> RGB, ITU-R BT.601, full range */
879 static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt601_full = {
880 256, 0, 358, /* ry, rcb, rcr |1.000 0.000 1.402|*/
881 256, -88, -182, /* gy, gcb, gcr |1.000 -0.344 -0.714|*/
882 256, 452, 0, /* by, bcb, bcr |1.000 1.772 0.000|*/
883 true, /* full range */
884 };
885
886 /* YUV -> RGB, ITU-R BT.601, limited range */
887 static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt601_lim = {
888 298, 0, 409, /* ry, rcb, rcr |1.164 0.000 1.596|*/
889 298, -100, -208, /* gy, gcb, gcr |1.164 -0.392 -0.813|*/
890 298, 516, 0, /* by, bcb, bcr |1.164 2.017 0.000|*/
891 false, /* limited range */
892 };
893
894 /* YUV -> RGB, ITU-R BT.709, full range */
895 static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt709_full = {
896 256, 0, 402, /* ry, rcb, rcr |1.000 0.000 1.570|*/
897 256, -48, -120, /* gy, gcb, gcr |1.000 -0.187 -0.467|*/
898 256, 475, 0, /* by, bcb, bcr |1.000 1.856 0.000|*/
899 true, /* full range */
900 };
901
902 /* YUV -> RGB, ITU-R BT.709, limited range */
903 static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt709_lim = {
904 298, 0, 459, /* ry, rcb, rcr |1.164 0.000 1.793|*/
905 298, -55, -136, /* gy, gcb, gcr |1.164 -0.213 -0.533|*/
906 298, 541, 0, /* by, bcb, bcr |1.164 2.112 0.000|*/
907 false, /* limited range */
908 };
909
dispc_ovl_set_csc(struct dispc_device * dispc,enum omap_plane_id plane,enum drm_color_encoding color_encoding,enum drm_color_range color_range)910 static void dispc_ovl_set_csc(struct dispc_device *dispc,
911 enum omap_plane_id plane,
912 enum drm_color_encoding color_encoding,
913 enum drm_color_range color_range)
914 {
915 const struct csc_coef_yuv2rgb *csc;
916
917 switch (color_encoding) {
918 default:
919 case DRM_COLOR_YCBCR_BT601:
920 if (color_range == DRM_COLOR_YCBCR_FULL_RANGE)
921 csc = &coefs_yuv2rgb_bt601_full;
922 else
923 csc = &coefs_yuv2rgb_bt601_lim;
924 break;
925 case DRM_COLOR_YCBCR_BT709:
926 if (color_range == DRM_COLOR_YCBCR_FULL_RANGE)
927 csc = &coefs_yuv2rgb_bt709_full;
928 else
929 csc = &coefs_yuv2rgb_bt709_lim;
930 break;
931 }
932
933 dispc_ovl_write_color_conv_coef(dispc, plane, csc);
934 }
935
dispc_ovl_set_ba0(struct dispc_device * dispc,enum omap_plane_id plane,u32 paddr)936 static void dispc_ovl_set_ba0(struct dispc_device *dispc,
937 enum omap_plane_id plane, u32 paddr)
938 {
939 dispc_write_reg(dispc, DISPC_OVL_BA0(plane), paddr);
940 }
941
dispc_ovl_set_ba1(struct dispc_device * dispc,enum omap_plane_id plane,u32 paddr)942 static void dispc_ovl_set_ba1(struct dispc_device *dispc,
943 enum omap_plane_id plane, u32 paddr)
944 {
945 dispc_write_reg(dispc, DISPC_OVL_BA1(plane), paddr);
946 }
947
dispc_ovl_set_ba0_uv(struct dispc_device * dispc,enum omap_plane_id plane,u32 paddr)948 static void dispc_ovl_set_ba0_uv(struct dispc_device *dispc,
949 enum omap_plane_id plane, u32 paddr)
950 {
951 dispc_write_reg(dispc, DISPC_OVL_BA0_UV(plane), paddr);
952 }
953
dispc_ovl_set_ba1_uv(struct dispc_device * dispc,enum omap_plane_id plane,u32 paddr)954 static void dispc_ovl_set_ba1_uv(struct dispc_device *dispc,
955 enum omap_plane_id plane, u32 paddr)
956 {
957 dispc_write_reg(dispc, DISPC_OVL_BA1_UV(plane), paddr);
958 }
959
dispc_ovl_set_pos(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_overlay_caps caps,int x,int y)960 static void dispc_ovl_set_pos(struct dispc_device *dispc,
961 enum omap_plane_id plane,
962 enum omap_overlay_caps caps, int x, int y)
963 {
964 u32 val;
965
966 if ((caps & OMAP_DSS_OVL_CAP_POS) == 0)
967 return;
968
969 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
970
971 dispc_write_reg(dispc, DISPC_OVL_POSITION(plane), val);
972 }
973
dispc_ovl_set_input_size(struct dispc_device * dispc,enum omap_plane_id plane,int width,int height)974 static void dispc_ovl_set_input_size(struct dispc_device *dispc,
975 enum omap_plane_id plane, int width,
976 int height)
977 {
978 u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
979
980 if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB)
981 dispc_write_reg(dispc, DISPC_OVL_SIZE(plane), val);
982 else
983 dispc_write_reg(dispc, DISPC_OVL_PICTURE_SIZE(plane), val);
984 }
985
dispc_ovl_set_output_size(struct dispc_device * dispc,enum omap_plane_id plane,int width,int height)986 static void dispc_ovl_set_output_size(struct dispc_device *dispc,
987 enum omap_plane_id plane, int width,
988 int height)
989 {
990 u32 val;
991
992 BUG_ON(plane == OMAP_DSS_GFX);
993
994 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
995
996 if (plane == OMAP_DSS_WB)
997 dispc_write_reg(dispc, DISPC_OVL_PICTURE_SIZE(plane), val);
998 else
999 dispc_write_reg(dispc, DISPC_OVL_SIZE(plane), val);
1000 }
1001
dispc_ovl_set_zorder(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_overlay_caps caps,u8 zorder)1002 static void dispc_ovl_set_zorder(struct dispc_device *dispc,
1003 enum omap_plane_id plane,
1004 enum omap_overlay_caps caps, u8 zorder)
1005 {
1006 if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1007 return;
1008
1009 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
1010 }
1011
dispc_ovl_enable_zorder_planes(struct dispc_device * dispc)1012 static void dispc_ovl_enable_zorder_planes(struct dispc_device *dispc)
1013 {
1014 int i;
1015
1016 if (!dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
1017 return;
1018
1019 for (i = 0; i < dispc_get_num_ovls(dispc); i++)
1020 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
1021 }
1022
dispc_ovl_set_pre_mult_alpha(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_overlay_caps caps,bool enable)1023 static void dispc_ovl_set_pre_mult_alpha(struct dispc_device *dispc,
1024 enum omap_plane_id plane,
1025 enum omap_overlay_caps caps,
1026 bool enable)
1027 {
1028 if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
1029 return;
1030
1031 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
1032 }
1033
dispc_ovl_setup_global_alpha(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_overlay_caps caps,u8 global_alpha)1034 static void dispc_ovl_setup_global_alpha(struct dispc_device *dispc,
1035 enum omap_plane_id plane,
1036 enum omap_overlay_caps caps,
1037 u8 global_alpha)
1038 {
1039 static const unsigned int shifts[] = { 0, 8, 16, 24, };
1040 int shift;
1041
1042 if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1043 return;
1044
1045 shift = shifts[plane];
1046 REG_FLD_MOD(dispc, DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
1047 }
1048
dispc_ovl_set_pix_inc(struct dispc_device * dispc,enum omap_plane_id plane,s32 inc)1049 static void dispc_ovl_set_pix_inc(struct dispc_device *dispc,
1050 enum omap_plane_id plane, s32 inc)
1051 {
1052 dispc_write_reg(dispc, DISPC_OVL_PIXEL_INC(plane), inc);
1053 }
1054
dispc_ovl_set_row_inc(struct dispc_device * dispc,enum omap_plane_id plane,s32 inc)1055 static void dispc_ovl_set_row_inc(struct dispc_device *dispc,
1056 enum omap_plane_id plane, s32 inc)
1057 {
1058 dispc_write_reg(dispc, DISPC_OVL_ROW_INC(plane), inc);
1059 }
1060
dispc_ovl_set_color_mode(struct dispc_device * dispc,enum omap_plane_id plane,u32 fourcc)1061 static void dispc_ovl_set_color_mode(struct dispc_device *dispc,
1062 enum omap_plane_id plane, u32 fourcc)
1063 {
1064 u32 m = 0;
1065 if (plane != OMAP_DSS_GFX) {
1066 switch (fourcc) {
1067 case DRM_FORMAT_NV12:
1068 m = 0x0; break;
1069 case DRM_FORMAT_XRGB4444:
1070 m = 0x1; break;
1071 case DRM_FORMAT_RGBA4444:
1072 m = 0x2; break;
1073 case DRM_FORMAT_RGBX4444:
1074 m = 0x4; break;
1075 case DRM_FORMAT_ARGB4444:
1076 m = 0x5; break;
1077 case DRM_FORMAT_RGB565:
1078 m = 0x6; break;
1079 case DRM_FORMAT_ARGB1555:
1080 m = 0x7; break;
1081 case DRM_FORMAT_XRGB8888:
1082 m = 0x8; break;
1083 case DRM_FORMAT_RGB888:
1084 m = 0x9; break;
1085 case DRM_FORMAT_YUYV:
1086 m = 0xa; break;
1087 case DRM_FORMAT_UYVY:
1088 m = 0xb; break;
1089 case DRM_FORMAT_ARGB8888:
1090 m = 0xc; break;
1091 case DRM_FORMAT_RGBA8888:
1092 m = 0xd; break;
1093 case DRM_FORMAT_RGBX8888:
1094 m = 0xe; break;
1095 case DRM_FORMAT_XRGB1555:
1096 m = 0xf; break;
1097 default:
1098 BUG(); return;
1099 }
1100 } else {
1101 switch (fourcc) {
1102 case DRM_FORMAT_RGBX4444:
1103 m = 0x4; break;
1104 case DRM_FORMAT_ARGB4444:
1105 m = 0x5; break;
1106 case DRM_FORMAT_RGB565:
1107 m = 0x6; break;
1108 case DRM_FORMAT_ARGB1555:
1109 m = 0x7; break;
1110 case DRM_FORMAT_XRGB8888:
1111 m = 0x8; break;
1112 case DRM_FORMAT_RGB888:
1113 m = 0x9; break;
1114 case DRM_FORMAT_XRGB4444:
1115 m = 0xa; break;
1116 case DRM_FORMAT_RGBA4444:
1117 m = 0xb; break;
1118 case DRM_FORMAT_ARGB8888:
1119 m = 0xc; break;
1120 case DRM_FORMAT_RGBA8888:
1121 m = 0xd; break;
1122 case DRM_FORMAT_RGBX8888:
1123 m = 0xe; break;
1124 case DRM_FORMAT_XRGB1555:
1125 m = 0xf; break;
1126 default:
1127 BUG(); return;
1128 }
1129 }
1130
1131 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
1132 }
1133
dispc_ovl_configure_burst_type(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_dss_rotation_type rotation)1134 static void dispc_ovl_configure_burst_type(struct dispc_device *dispc,
1135 enum omap_plane_id plane,
1136 enum omap_dss_rotation_type rotation)
1137 {
1138 if (dispc_has_feature(dispc, FEAT_BURST_2D) == 0)
1139 return;
1140
1141 if (rotation == OMAP_DSS_ROT_TILER)
1142 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29);
1143 else
1144 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29);
1145 }
1146
dispc_ovl_set_channel_out(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_channel channel)1147 static void dispc_ovl_set_channel_out(struct dispc_device *dispc,
1148 enum omap_plane_id plane,
1149 enum omap_channel channel)
1150 {
1151 int shift;
1152 u32 val;
1153 int chan = 0, chan2 = 0;
1154
1155 switch (plane) {
1156 case OMAP_DSS_GFX:
1157 shift = 8;
1158 break;
1159 case OMAP_DSS_VIDEO1:
1160 case OMAP_DSS_VIDEO2:
1161 case OMAP_DSS_VIDEO3:
1162 shift = 16;
1163 break;
1164 default:
1165 BUG();
1166 return;
1167 }
1168
1169 val = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1170 if (dispc_has_feature(dispc, FEAT_MGR_LCD2)) {
1171 switch (channel) {
1172 case OMAP_DSS_CHANNEL_LCD:
1173 chan = 0;
1174 chan2 = 0;
1175 break;
1176 case OMAP_DSS_CHANNEL_DIGIT:
1177 chan = 1;
1178 chan2 = 0;
1179 break;
1180 case OMAP_DSS_CHANNEL_LCD2:
1181 chan = 0;
1182 chan2 = 1;
1183 break;
1184 case OMAP_DSS_CHANNEL_LCD3:
1185 if (dispc_has_feature(dispc, FEAT_MGR_LCD3)) {
1186 chan = 0;
1187 chan2 = 2;
1188 } else {
1189 BUG();
1190 return;
1191 }
1192 break;
1193 case OMAP_DSS_CHANNEL_WB:
1194 chan = 0;
1195 chan2 = 3;
1196 break;
1197 default:
1198 BUG();
1199 return;
1200 }
1201
1202 val = FLD_MOD(val, chan, shift, shift);
1203 val = FLD_MOD(val, chan2, 31, 30);
1204 } else {
1205 val = FLD_MOD(val, channel, shift, shift);
1206 }
1207 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), val);
1208 }
1209
dispc_ovl_get_channel_out(struct dispc_device * dispc,enum omap_plane_id plane)1210 static enum omap_channel dispc_ovl_get_channel_out(struct dispc_device *dispc,
1211 enum omap_plane_id plane)
1212 {
1213 int shift;
1214 u32 val;
1215
1216 switch (plane) {
1217 case OMAP_DSS_GFX:
1218 shift = 8;
1219 break;
1220 case OMAP_DSS_VIDEO1:
1221 case OMAP_DSS_VIDEO2:
1222 case OMAP_DSS_VIDEO3:
1223 shift = 16;
1224 break;
1225 default:
1226 BUG();
1227 return 0;
1228 }
1229
1230 val = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1231
1232 if (FLD_GET(val, shift, shift) == 1)
1233 return OMAP_DSS_CHANNEL_DIGIT;
1234
1235 if (!dispc_has_feature(dispc, FEAT_MGR_LCD2))
1236 return OMAP_DSS_CHANNEL_LCD;
1237
1238 switch (FLD_GET(val, 31, 30)) {
1239 case 0:
1240 default:
1241 return OMAP_DSS_CHANNEL_LCD;
1242 case 1:
1243 return OMAP_DSS_CHANNEL_LCD2;
1244 case 2:
1245 return OMAP_DSS_CHANNEL_LCD3;
1246 case 3:
1247 return OMAP_DSS_CHANNEL_WB;
1248 }
1249 }
1250
dispc_ovl_set_burst_size(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_burst_size burst_size)1251 static void dispc_ovl_set_burst_size(struct dispc_device *dispc,
1252 enum omap_plane_id plane,
1253 enum omap_burst_size burst_size)
1254 {
1255 static const unsigned int shifts[] = { 6, 14, 14, 14, 14, };
1256 int shift;
1257
1258 shift = shifts[plane];
1259 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), burst_size,
1260 shift + 1, shift);
1261 }
1262
dispc_configure_burst_sizes(struct dispc_device * dispc)1263 static void dispc_configure_burst_sizes(struct dispc_device *dispc)
1264 {
1265 int i;
1266 const int burst_size = BURST_SIZE_X8;
1267
1268 /* Configure burst size always to maximum size */
1269 for (i = 0; i < dispc_get_num_ovls(dispc); ++i)
1270 dispc_ovl_set_burst_size(dispc, i, burst_size);
1271 if (dispc->feat->has_writeback)
1272 dispc_ovl_set_burst_size(dispc, OMAP_DSS_WB, burst_size);
1273 }
1274
dispc_ovl_get_burst_size(struct dispc_device * dispc,enum omap_plane_id plane)1275 static u32 dispc_ovl_get_burst_size(struct dispc_device *dispc,
1276 enum omap_plane_id plane)
1277 {
1278 /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
1279 return dispc->feat->burst_size_unit * 8;
1280 }
1281
dispc_ovl_color_mode_supported(struct dispc_device * dispc,enum omap_plane_id plane,u32 fourcc)1282 static bool dispc_ovl_color_mode_supported(struct dispc_device *dispc,
1283 enum omap_plane_id plane, u32 fourcc)
1284 {
1285 const u32 *modes;
1286 unsigned int i;
1287
1288 modes = dispc->feat->supported_color_modes[plane];
1289
1290 for (i = 0; modes[i]; ++i) {
1291 if (modes[i] == fourcc)
1292 return true;
1293 }
1294
1295 return false;
1296 }
1297
dispc_ovl_get_color_modes(struct dispc_device * dispc,enum omap_plane_id plane)1298 const u32 *dispc_ovl_get_color_modes(struct dispc_device *dispc,
1299 enum omap_plane_id plane)
1300 {
1301 return dispc->feat->supported_color_modes[plane];
1302 }
1303
dispc_mgr_enable_cpr(struct dispc_device * dispc,enum omap_channel channel,bool enable)1304 static void dispc_mgr_enable_cpr(struct dispc_device *dispc,
1305 enum omap_channel channel, bool enable)
1306 {
1307 if (channel == OMAP_DSS_CHANNEL_DIGIT)
1308 return;
1309
1310 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_CPR, enable);
1311 }
1312
dispc_mgr_set_cpr_coef(struct dispc_device * dispc,enum omap_channel channel,const struct omap_dss_cpr_coefs * coefs)1313 static void dispc_mgr_set_cpr_coef(struct dispc_device *dispc,
1314 enum omap_channel channel,
1315 const struct omap_dss_cpr_coefs *coefs)
1316 {
1317 u32 coef_r, coef_g, coef_b;
1318
1319 if (!dss_mgr_is_lcd(channel))
1320 return;
1321
1322 coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
1323 FLD_VAL(coefs->rb, 9, 0);
1324 coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
1325 FLD_VAL(coefs->gb, 9, 0);
1326 coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
1327 FLD_VAL(coefs->bb, 9, 0);
1328
1329 dispc_write_reg(dispc, DISPC_CPR_COEF_R(channel), coef_r);
1330 dispc_write_reg(dispc, DISPC_CPR_COEF_G(channel), coef_g);
1331 dispc_write_reg(dispc, DISPC_CPR_COEF_B(channel), coef_b);
1332 }
1333
dispc_ovl_set_vid_color_conv(struct dispc_device * dispc,enum omap_plane_id plane,bool enable)1334 static void dispc_ovl_set_vid_color_conv(struct dispc_device *dispc,
1335 enum omap_plane_id plane, bool enable)
1336 {
1337 u32 val;
1338
1339 BUG_ON(plane == OMAP_DSS_GFX);
1340
1341 val = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1342 val = FLD_MOD(val, enable, 9, 9);
1343 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), val);
1344 }
1345
dispc_ovl_enable_replication(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_overlay_caps caps,bool enable)1346 static void dispc_ovl_enable_replication(struct dispc_device *dispc,
1347 enum omap_plane_id plane,
1348 enum omap_overlay_caps caps,
1349 bool enable)
1350 {
1351 static const unsigned int shifts[] = { 5, 10, 10, 10 };
1352 int shift;
1353
1354 if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0)
1355 return;
1356
1357 shift = shifts[plane];
1358 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
1359 }
1360
dispc_mgr_set_size(struct dispc_device * dispc,enum omap_channel channel,u16 width,u16 height)1361 static void dispc_mgr_set_size(struct dispc_device *dispc,
1362 enum omap_channel channel, u16 width, u16 height)
1363 {
1364 u32 val;
1365
1366 val = FLD_VAL(height - 1, dispc->feat->mgr_height_start, 16) |
1367 FLD_VAL(width - 1, dispc->feat->mgr_width_start, 0);
1368
1369 dispc_write_reg(dispc, DISPC_SIZE_MGR(channel), val);
1370 }
1371
dispc_init_fifos(struct dispc_device * dispc)1372 static void dispc_init_fifos(struct dispc_device *dispc)
1373 {
1374 u32 size;
1375 int fifo;
1376 u8 start, end;
1377 u32 unit;
1378 int i;
1379
1380 unit = dispc->feat->buffer_size_unit;
1381
1382 dispc_get_reg_field(dispc, FEAT_REG_FIFOSIZE, &start, &end);
1383
1384 for (fifo = 0; fifo < dispc->feat->num_fifos; ++fifo) {
1385 size = REG_GET(dispc, DISPC_OVL_FIFO_SIZE_STATUS(fifo),
1386 start, end);
1387 size *= unit;
1388 dispc->fifo_size[fifo] = size;
1389
1390 /*
1391 * By default fifos are mapped directly to overlays, fifo 0 to
1392 * ovl 0, fifo 1 to ovl 1, etc.
1393 */
1394 dispc->fifo_assignment[fifo] = fifo;
1395 }
1396
1397 /*
1398 * The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo
1399 * causes problems with certain use cases, like using the tiler in 2D
1400 * mode. The below hack swaps the fifos of GFX and WB planes, thus
1401 * giving GFX plane a larger fifo. WB but should work fine with a
1402 * smaller fifo.
1403 */
1404 if (dispc->feat->gfx_fifo_workaround) {
1405 u32 v;
1406
1407 v = dispc_read_reg(dispc, DISPC_GLOBAL_BUFFER);
1408
1409 v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */
1410 v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */
1411 v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */
1412 v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */
1413
1414 dispc_write_reg(dispc, DISPC_GLOBAL_BUFFER, v);
1415
1416 dispc->fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB;
1417 dispc->fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX;
1418 }
1419
1420 /*
1421 * Setup default fifo thresholds.
1422 */
1423 for (i = 0; i < dispc_get_num_ovls(dispc); ++i) {
1424 u32 low, high;
1425 const bool use_fifomerge = false;
1426 const bool manual_update = false;
1427
1428 dispc_ovl_compute_fifo_thresholds(dispc, i, &low, &high,
1429 use_fifomerge, manual_update);
1430
1431 dispc_ovl_set_fifo_threshold(dispc, i, low, high);
1432 }
1433
1434 if (dispc->feat->has_writeback) {
1435 u32 low, high;
1436 const bool use_fifomerge = false;
1437 const bool manual_update = false;
1438
1439 dispc_ovl_compute_fifo_thresholds(dispc, OMAP_DSS_WB,
1440 &low, &high, use_fifomerge,
1441 manual_update);
1442
1443 dispc_ovl_set_fifo_threshold(dispc, OMAP_DSS_WB, low, high);
1444 }
1445 }
1446
dispc_ovl_get_fifo_size(struct dispc_device * dispc,enum omap_plane_id plane)1447 static u32 dispc_ovl_get_fifo_size(struct dispc_device *dispc,
1448 enum omap_plane_id plane)
1449 {
1450 int fifo;
1451 u32 size = 0;
1452
1453 for (fifo = 0; fifo < dispc->feat->num_fifos; ++fifo) {
1454 if (dispc->fifo_assignment[fifo] == plane)
1455 size += dispc->fifo_size[fifo];
1456 }
1457
1458 return size;
1459 }
1460
dispc_ovl_set_fifo_threshold(struct dispc_device * dispc,enum omap_plane_id plane,u32 low,u32 high)1461 void dispc_ovl_set_fifo_threshold(struct dispc_device *dispc,
1462 enum omap_plane_id plane,
1463 u32 low, u32 high)
1464 {
1465 u8 hi_start, hi_end, lo_start, lo_end;
1466 u32 unit;
1467
1468 unit = dispc->feat->buffer_size_unit;
1469
1470 WARN_ON(low % unit != 0);
1471 WARN_ON(high % unit != 0);
1472
1473 low /= unit;
1474 high /= unit;
1475
1476 dispc_get_reg_field(dispc, FEAT_REG_FIFOHIGHTHRESHOLD,
1477 &hi_start, &hi_end);
1478 dispc_get_reg_field(dispc, FEAT_REG_FIFOLOWTHRESHOLD,
1479 &lo_start, &lo_end);
1480
1481 DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n",
1482 plane,
1483 REG_GET(dispc, DISPC_OVL_FIFO_THRESHOLD(plane),
1484 lo_start, lo_end) * unit,
1485 REG_GET(dispc, DISPC_OVL_FIFO_THRESHOLD(plane),
1486 hi_start, hi_end) * unit,
1487 low * unit, high * unit);
1488
1489 dispc_write_reg(dispc, DISPC_OVL_FIFO_THRESHOLD(plane),
1490 FLD_VAL(high, hi_start, hi_end) |
1491 FLD_VAL(low, lo_start, lo_end));
1492
1493 /*
1494 * configure the preload to the pipeline's high threhold, if HT it's too
1495 * large for the preload field, set the threshold to the maximum value
1496 * that can be held by the preload register
1497 */
1498 if (dispc_has_feature(dispc, FEAT_PRELOAD) &&
1499 dispc->feat->set_max_preload && plane != OMAP_DSS_WB)
1500 dispc_write_reg(dispc, DISPC_OVL_PRELOAD(plane),
1501 min(high, 0xfffu));
1502 }
1503
dispc_enable_fifomerge(struct dispc_device * dispc,bool enable)1504 void dispc_enable_fifomerge(struct dispc_device *dispc, bool enable)
1505 {
1506 if (!dispc_has_feature(dispc, FEAT_FIFO_MERGE)) {
1507 WARN_ON(enable);
1508 return;
1509 }
1510
1511 DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
1512 REG_FLD_MOD(dispc, DISPC_CONFIG, enable ? 1 : 0, 14, 14);
1513 }
1514
dispc_ovl_compute_fifo_thresholds(struct dispc_device * dispc,enum omap_plane_id plane,u32 * fifo_low,u32 * fifo_high,bool use_fifomerge,bool manual_update)1515 void dispc_ovl_compute_fifo_thresholds(struct dispc_device *dispc,
1516 enum omap_plane_id plane,
1517 u32 *fifo_low, u32 *fifo_high,
1518 bool use_fifomerge, bool manual_update)
1519 {
1520 /*
1521 * All sizes are in bytes. Both the buffer and burst are made of
1522 * buffer_units, and the fifo thresholds must be buffer_unit aligned.
1523 */
1524 unsigned int buf_unit = dispc->feat->buffer_size_unit;
1525 unsigned int ovl_fifo_size, total_fifo_size, burst_size;
1526 int i;
1527
1528 burst_size = dispc_ovl_get_burst_size(dispc, plane);
1529 ovl_fifo_size = dispc_ovl_get_fifo_size(dispc, plane);
1530
1531 if (use_fifomerge) {
1532 total_fifo_size = 0;
1533 for (i = 0; i < dispc_get_num_ovls(dispc); ++i)
1534 total_fifo_size += dispc_ovl_get_fifo_size(dispc, i);
1535 } else {
1536 total_fifo_size = ovl_fifo_size;
1537 }
1538
1539 /*
1540 * We use the same low threshold for both fifomerge and non-fifomerge
1541 * cases, but for fifomerge we calculate the high threshold using the
1542 * combined fifo size
1543 */
1544
1545 if (manual_update && dispc_has_feature(dispc, FEAT_OMAP3_DSI_FIFO_BUG)) {
1546 *fifo_low = ovl_fifo_size - burst_size * 2;
1547 *fifo_high = total_fifo_size - burst_size;
1548 } else if (plane == OMAP_DSS_WB) {
1549 /*
1550 * Most optimal configuration for writeback is to push out data
1551 * to the interconnect the moment writeback pushes enough pixels
1552 * in the FIFO to form a burst
1553 */
1554 *fifo_low = 0;
1555 *fifo_high = burst_size;
1556 } else {
1557 *fifo_low = ovl_fifo_size - burst_size;
1558 *fifo_high = total_fifo_size - buf_unit;
1559 }
1560 }
1561
dispc_ovl_set_mflag(struct dispc_device * dispc,enum omap_plane_id plane,bool enable)1562 static void dispc_ovl_set_mflag(struct dispc_device *dispc,
1563 enum omap_plane_id plane, bool enable)
1564 {
1565 int bit;
1566
1567 if (plane == OMAP_DSS_GFX)
1568 bit = 14;
1569 else
1570 bit = 23;
1571
1572 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable, bit, bit);
1573 }
1574
dispc_ovl_set_mflag_threshold(struct dispc_device * dispc,enum omap_plane_id plane,int low,int high)1575 static void dispc_ovl_set_mflag_threshold(struct dispc_device *dispc,
1576 enum omap_plane_id plane,
1577 int low, int high)
1578 {
1579 dispc_write_reg(dispc, DISPC_OVL_MFLAG_THRESHOLD(plane),
1580 FLD_VAL(high, 31, 16) | FLD_VAL(low, 15, 0));
1581 }
1582
dispc_init_mflag(struct dispc_device * dispc)1583 static void dispc_init_mflag(struct dispc_device *dispc)
1584 {
1585 int i;
1586
1587 /*
1588 * HACK: NV12 color format and MFLAG seem to have problems working
1589 * together: using two displays, and having an NV12 overlay on one of
1590 * the displays will cause underflows/synclosts when MFLAG_CTRL=2.
1591 * Changing MFLAG thresholds and PRELOAD to certain values seem to
1592 * remove the errors, but there doesn't seem to be a clear logic on
1593 * which values work and which not.
1594 *
1595 * As a work-around, set force MFLAG to always on.
1596 */
1597 dispc_write_reg(dispc, DISPC_GLOBAL_MFLAG_ATTRIBUTE,
1598 (1 << 0) | /* MFLAG_CTRL = force always on */
1599 (0 << 2)); /* MFLAG_START = disable */
1600
1601 for (i = 0; i < dispc_get_num_ovls(dispc); ++i) {
1602 u32 size = dispc_ovl_get_fifo_size(dispc, i);
1603 u32 unit = dispc->feat->buffer_size_unit;
1604 u32 low, high;
1605
1606 dispc_ovl_set_mflag(dispc, i, true);
1607
1608 /*
1609 * Simulation team suggests below thesholds:
1610 * HT = fifosize * 5 / 8;
1611 * LT = fifosize * 4 / 8;
1612 */
1613
1614 low = size * 4 / 8 / unit;
1615 high = size * 5 / 8 / unit;
1616
1617 dispc_ovl_set_mflag_threshold(dispc, i, low, high);
1618 }
1619
1620 if (dispc->feat->has_writeback) {
1621 u32 size = dispc_ovl_get_fifo_size(dispc, OMAP_DSS_WB);
1622 u32 unit = dispc->feat->buffer_size_unit;
1623 u32 low, high;
1624
1625 dispc_ovl_set_mflag(dispc, OMAP_DSS_WB, true);
1626
1627 /*
1628 * Simulation team suggests below thesholds:
1629 * HT = fifosize * 5 / 8;
1630 * LT = fifosize * 4 / 8;
1631 */
1632
1633 low = size * 4 / 8 / unit;
1634 high = size * 5 / 8 / unit;
1635
1636 dispc_ovl_set_mflag_threshold(dispc, OMAP_DSS_WB, low, high);
1637 }
1638 }
1639
dispc_ovl_set_fir(struct dispc_device * dispc,enum omap_plane_id plane,int hinc,int vinc,enum omap_color_component color_comp)1640 static void dispc_ovl_set_fir(struct dispc_device *dispc,
1641 enum omap_plane_id plane,
1642 int hinc, int vinc,
1643 enum omap_color_component color_comp)
1644 {
1645 u32 val;
1646
1647 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
1648 u8 hinc_start, hinc_end, vinc_start, vinc_end;
1649
1650 dispc_get_reg_field(dispc, FEAT_REG_FIRHINC,
1651 &hinc_start, &hinc_end);
1652 dispc_get_reg_field(dispc, FEAT_REG_FIRVINC,
1653 &vinc_start, &vinc_end);
1654 val = FLD_VAL(vinc, vinc_start, vinc_end) |
1655 FLD_VAL(hinc, hinc_start, hinc_end);
1656
1657 dispc_write_reg(dispc, DISPC_OVL_FIR(plane), val);
1658 } else {
1659 val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
1660 dispc_write_reg(dispc, DISPC_OVL_FIR2(plane), val);
1661 }
1662 }
1663
dispc_ovl_set_vid_accu0(struct dispc_device * dispc,enum omap_plane_id plane,int haccu,int vaccu)1664 static void dispc_ovl_set_vid_accu0(struct dispc_device *dispc,
1665 enum omap_plane_id plane, int haccu,
1666 int vaccu)
1667 {
1668 u32 val;
1669 u8 hor_start, hor_end, vert_start, vert_end;
1670
1671 dispc_get_reg_field(dispc, FEAT_REG_HORIZONTALACCU,
1672 &hor_start, &hor_end);
1673 dispc_get_reg_field(dispc, FEAT_REG_VERTICALACCU,
1674 &vert_start, &vert_end);
1675
1676 val = FLD_VAL(vaccu, vert_start, vert_end) |
1677 FLD_VAL(haccu, hor_start, hor_end);
1678
1679 dispc_write_reg(dispc, DISPC_OVL_ACCU0(plane), val);
1680 }
1681
dispc_ovl_set_vid_accu1(struct dispc_device * dispc,enum omap_plane_id plane,int haccu,int vaccu)1682 static void dispc_ovl_set_vid_accu1(struct dispc_device *dispc,
1683 enum omap_plane_id plane, int haccu,
1684 int vaccu)
1685 {
1686 u32 val;
1687 u8 hor_start, hor_end, vert_start, vert_end;
1688
1689 dispc_get_reg_field(dispc, FEAT_REG_HORIZONTALACCU,
1690 &hor_start, &hor_end);
1691 dispc_get_reg_field(dispc, FEAT_REG_VERTICALACCU,
1692 &vert_start, &vert_end);
1693
1694 val = FLD_VAL(vaccu, vert_start, vert_end) |
1695 FLD_VAL(haccu, hor_start, hor_end);
1696
1697 dispc_write_reg(dispc, DISPC_OVL_ACCU1(plane), val);
1698 }
1699
dispc_ovl_set_vid_accu2_0(struct dispc_device * dispc,enum omap_plane_id plane,int haccu,int vaccu)1700 static void dispc_ovl_set_vid_accu2_0(struct dispc_device *dispc,
1701 enum omap_plane_id plane, int haccu,
1702 int vaccu)
1703 {
1704 u32 val;
1705
1706 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1707 dispc_write_reg(dispc, DISPC_OVL_ACCU2_0(plane), val);
1708 }
1709
dispc_ovl_set_vid_accu2_1(struct dispc_device * dispc,enum omap_plane_id plane,int haccu,int vaccu)1710 static void dispc_ovl_set_vid_accu2_1(struct dispc_device *dispc,
1711 enum omap_plane_id plane, int haccu,
1712 int vaccu)
1713 {
1714 u32 val;
1715
1716 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1717 dispc_write_reg(dispc, DISPC_OVL_ACCU2_1(plane), val);
1718 }
1719
dispc_ovl_set_scale_param(struct dispc_device * dispc,enum omap_plane_id plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool five_taps,u8 rotation,enum omap_color_component color_comp)1720 static void dispc_ovl_set_scale_param(struct dispc_device *dispc,
1721 enum omap_plane_id plane,
1722 u16 orig_width, u16 orig_height,
1723 u16 out_width, u16 out_height,
1724 bool five_taps, u8 rotation,
1725 enum omap_color_component color_comp)
1726 {
1727 int fir_hinc, fir_vinc;
1728
1729 fir_hinc = 1024 * orig_width / out_width;
1730 fir_vinc = 1024 * orig_height / out_height;
1731
1732 dispc_ovl_set_scale_coef(dispc, plane, fir_hinc, fir_vinc, five_taps,
1733 color_comp);
1734 dispc_ovl_set_fir(dispc, plane, fir_hinc, fir_vinc, color_comp);
1735 }
1736
dispc_ovl_set_accu_uv(struct dispc_device * dispc,enum omap_plane_id plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,u32 fourcc,u8 rotation)1737 static void dispc_ovl_set_accu_uv(struct dispc_device *dispc,
1738 enum omap_plane_id plane,
1739 u16 orig_width, u16 orig_height,
1740 u16 out_width, u16 out_height,
1741 bool ilace, u32 fourcc, u8 rotation)
1742 {
1743 int h_accu2_0, h_accu2_1;
1744 int v_accu2_0, v_accu2_1;
1745 int chroma_hinc, chroma_vinc;
1746 int idx;
1747
1748 struct accu {
1749 s8 h0_m, h0_n;
1750 s8 h1_m, h1_n;
1751 s8 v0_m, v0_n;
1752 s8 v1_m, v1_n;
1753 };
1754
1755 const struct accu *accu_table;
1756 const struct accu *accu_val;
1757
1758 static const struct accu accu_nv12[4] = {
1759 { 0, 1, 0, 1 , -1, 2, 0, 1 },
1760 { 1, 2, -3, 4 , 0, 1, 0, 1 },
1761 { -1, 1, 0, 1 , -1, 2, 0, 1 },
1762 { -1, 2, -1, 2 , -1, 1, 0, 1 },
1763 };
1764
1765 static const struct accu accu_nv12_ilace[4] = {
1766 { 0, 1, 0, 1 , -3, 4, -1, 4 },
1767 { -1, 4, -3, 4 , 0, 1, 0, 1 },
1768 { -1, 1, 0, 1 , -1, 4, -3, 4 },
1769 { -3, 4, -3, 4 , -1, 1, 0, 1 },
1770 };
1771
1772 static const struct accu accu_yuv[4] = {
1773 { 0, 1, 0, 1, 0, 1, 0, 1 },
1774 { 0, 1, 0, 1, 0, 1, 0, 1 },
1775 { -1, 1, 0, 1, 0, 1, 0, 1 },
1776 { 0, 1, 0, 1, -1, 1, 0, 1 },
1777 };
1778
1779 /* Note: DSS HW rotates clockwise, DRM_MODE_ROTATE_* counter-clockwise */
1780 switch (rotation & DRM_MODE_ROTATE_MASK) {
1781 default:
1782 case DRM_MODE_ROTATE_0:
1783 idx = 0;
1784 break;
1785 case DRM_MODE_ROTATE_90:
1786 idx = 3;
1787 break;
1788 case DRM_MODE_ROTATE_180:
1789 idx = 2;
1790 break;
1791 case DRM_MODE_ROTATE_270:
1792 idx = 1;
1793 break;
1794 }
1795
1796 switch (fourcc) {
1797 case DRM_FORMAT_NV12:
1798 if (ilace)
1799 accu_table = accu_nv12_ilace;
1800 else
1801 accu_table = accu_nv12;
1802 break;
1803 case DRM_FORMAT_YUYV:
1804 case DRM_FORMAT_UYVY:
1805 accu_table = accu_yuv;
1806 break;
1807 default:
1808 BUG();
1809 return;
1810 }
1811
1812 accu_val = &accu_table[idx];
1813
1814 chroma_hinc = 1024 * orig_width / out_width;
1815 chroma_vinc = 1024 * orig_height / out_height;
1816
1817 h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024;
1818 h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024;
1819 v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024;
1820 v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024;
1821
1822 dispc_ovl_set_vid_accu2_0(dispc, plane, h_accu2_0, v_accu2_0);
1823 dispc_ovl_set_vid_accu2_1(dispc, plane, h_accu2_1, v_accu2_1);
1824 }
1825
dispc_ovl_set_scaling_common(struct dispc_device * dispc,enum omap_plane_id plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,bool five_taps,bool fieldmode,u32 fourcc,u8 rotation)1826 static void dispc_ovl_set_scaling_common(struct dispc_device *dispc,
1827 enum omap_plane_id plane,
1828 u16 orig_width, u16 orig_height,
1829 u16 out_width, u16 out_height,
1830 bool ilace, bool five_taps,
1831 bool fieldmode, u32 fourcc,
1832 u8 rotation)
1833 {
1834 int accu0 = 0;
1835 int accu1 = 0;
1836 u32 l;
1837
1838 dispc_ovl_set_scale_param(dispc, plane, orig_width, orig_height,
1839 out_width, out_height, five_taps,
1840 rotation, DISPC_COLOR_COMPONENT_RGB_Y);
1841 l = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1842
1843 /* RESIZEENABLE and VERTICALTAPS */
1844 l &= ~((0x3 << 5) | (0x1 << 21));
1845 l |= (orig_width != out_width) ? (1 << 5) : 0;
1846 l |= (orig_height != out_height) ? (1 << 6) : 0;
1847 l |= five_taps ? (1 << 21) : 0;
1848
1849 /* VRESIZECONF and HRESIZECONF */
1850 if (dispc_has_feature(dispc, FEAT_RESIZECONF)) {
1851 l &= ~(0x3 << 7);
1852 l |= (orig_width <= out_width) ? 0 : (1 << 7);
1853 l |= (orig_height <= out_height) ? 0 : (1 << 8);
1854 }
1855
1856 /* LINEBUFFERSPLIT */
1857 if (dispc_has_feature(dispc, FEAT_LINEBUFFERSPLIT)) {
1858 l &= ~(0x1 << 22);
1859 l |= five_taps ? (1 << 22) : 0;
1860 }
1861
1862 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), l);
1863
1864 /*
1865 * field 0 = even field = bottom field
1866 * field 1 = odd field = top field
1867 */
1868 if (ilace && !fieldmode) {
1869 accu1 = 0;
1870 accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
1871 if (accu0 >= 1024/2) {
1872 accu1 = 1024/2;
1873 accu0 -= accu1;
1874 }
1875 }
1876
1877 dispc_ovl_set_vid_accu0(dispc, plane, 0, accu0);
1878 dispc_ovl_set_vid_accu1(dispc, plane, 0, accu1);
1879 }
1880
dispc_ovl_set_scaling_uv(struct dispc_device * dispc,enum omap_plane_id plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,bool five_taps,bool fieldmode,u32 fourcc,u8 rotation)1881 static void dispc_ovl_set_scaling_uv(struct dispc_device *dispc,
1882 enum omap_plane_id plane,
1883 u16 orig_width, u16 orig_height,
1884 u16 out_width, u16 out_height,
1885 bool ilace, bool five_taps,
1886 bool fieldmode, u32 fourcc,
1887 u8 rotation)
1888 {
1889 int scale_x = out_width != orig_width;
1890 int scale_y = out_height != orig_height;
1891 bool chroma_upscale = plane != OMAP_DSS_WB;
1892 const struct drm_format_info *info;
1893
1894 info = drm_format_info(fourcc);
1895
1896 if (!dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE))
1897 return;
1898
1899 if (!info->is_yuv) {
1900 /* reset chroma resampling for RGB formats */
1901 if (plane != OMAP_DSS_WB)
1902 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane),
1903 0, 8, 8);
1904 return;
1905 }
1906
1907 dispc_ovl_set_accu_uv(dispc, plane, orig_width, orig_height, out_width,
1908 out_height, ilace, fourcc, rotation);
1909
1910 switch (fourcc) {
1911 case DRM_FORMAT_NV12:
1912 if (chroma_upscale) {
1913 /* UV is subsampled by 2 horizontally and vertically */
1914 orig_height >>= 1;
1915 orig_width >>= 1;
1916 } else {
1917 /* UV is downsampled by 2 horizontally and vertically */
1918 orig_height <<= 1;
1919 orig_width <<= 1;
1920 }
1921
1922 break;
1923 case DRM_FORMAT_YUYV:
1924 case DRM_FORMAT_UYVY:
1925 /* For YUV422 with 90/270 rotation, we don't upsample chroma */
1926 if (!drm_rotation_90_or_270(rotation)) {
1927 if (chroma_upscale)
1928 /* UV is subsampled by 2 horizontally */
1929 orig_width >>= 1;
1930 else
1931 /* UV is downsampled by 2 horizontally */
1932 orig_width <<= 1;
1933 }
1934
1935 /* must use FIR for YUV422 if rotated */
1936 if ((rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_0)
1937 scale_x = scale_y = true;
1938
1939 break;
1940 default:
1941 BUG();
1942 return;
1943 }
1944
1945 if (out_width != orig_width)
1946 scale_x = true;
1947 if (out_height != orig_height)
1948 scale_y = true;
1949
1950 dispc_ovl_set_scale_param(dispc, plane, orig_width, orig_height,
1951 out_width, out_height, five_taps,
1952 rotation, DISPC_COLOR_COMPONENT_UV);
1953
1954 if (plane != OMAP_DSS_WB)
1955 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane),
1956 (scale_x || scale_y) ? 1 : 0, 8, 8);
1957
1958 /* set H scaling */
1959 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
1960 /* set V scaling */
1961 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
1962 }
1963
dispc_ovl_set_scaling(struct dispc_device * dispc,enum omap_plane_id plane,u16 orig_width,u16 orig_height,u16 out_width,u16 out_height,bool ilace,bool five_taps,bool fieldmode,u32 fourcc,u8 rotation)1964 static void dispc_ovl_set_scaling(struct dispc_device *dispc,
1965 enum omap_plane_id plane,
1966 u16 orig_width, u16 orig_height,
1967 u16 out_width, u16 out_height,
1968 bool ilace, bool five_taps,
1969 bool fieldmode, u32 fourcc,
1970 u8 rotation)
1971 {
1972 BUG_ON(plane == OMAP_DSS_GFX);
1973
1974 dispc_ovl_set_scaling_common(dispc, plane, orig_width, orig_height,
1975 out_width, out_height, ilace, five_taps,
1976 fieldmode, fourcc, rotation);
1977
1978 dispc_ovl_set_scaling_uv(dispc, plane, orig_width, orig_height,
1979 out_width, out_height, ilace, five_taps,
1980 fieldmode, fourcc, rotation);
1981 }
1982
dispc_ovl_set_rotation_attrs(struct dispc_device * dispc,enum omap_plane_id plane,u8 rotation,enum omap_dss_rotation_type rotation_type,u32 fourcc)1983 static void dispc_ovl_set_rotation_attrs(struct dispc_device *dispc,
1984 enum omap_plane_id plane, u8 rotation,
1985 enum omap_dss_rotation_type rotation_type,
1986 u32 fourcc)
1987 {
1988 bool row_repeat = false;
1989 int vidrot = 0;
1990
1991 /* Note: DSS HW rotates clockwise, DRM_MODE_ROTATE_* counter-clockwise */
1992 if (fourcc == DRM_FORMAT_YUYV || fourcc == DRM_FORMAT_UYVY) {
1993
1994 if (rotation & DRM_MODE_REFLECT_X) {
1995 switch (rotation & DRM_MODE_ROTATE_MASK) {
1996 case DRM_MODE_ROTATE_0:
1997 vidrot = 2;
1998 break;
1999 case DRM_MODE_ROTATE_90:
2000 vidrot = 1;
2001 break;
2002 case DRM_MODE_ROTATE_180:
2003 vidrot = 0;
2004 break;
2005 case DRM_MODE_ROTATE_270:
2006 vidrot = 3;
2007 break;
2008 }
2009 } else {
2010 switch (rotation & DRM_MODE_ROTATE_MASK) {
2011 case DRM_MODE_ROTATE_0:
2012 vidrot = 0;
2013 break;
2014 case DRM_MODE_ROTATE_90:
2015 vidrot = 3;
2016 break;
2017 case DRM_MODE_ROTATE_180:
2018 vidrot = 2;
2019 break;
2020 case DRM_MODE_ROTATE_270:
2021 vidrot = 1;
2022 break;
2023 }
2024 }
2025
2026 if (drm_rotation_90_or_270(rotation))
2027 row_repeat = true;
2028 else
2029 row_repeat = false;
2030 }
2031
2032 /*
2033 * OMAP4/5 Errata i631:
2034 * NV12 in 1D mode must use ROTATION=1. Otherwise DSS will fetch extra
2035 * rows beyond the framebuffer, which may cause OCP error.
2036 */
2037 if (fourcc == DRM_FORMAT_NV12 && rotation_type != OMAP_DSS_ROT_TILER)
2038 vidrot = 1;
2039
2040 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
2041 if (dispc_has_feature(dispc, FEAT_ROWREPEATENABLE))
2042 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane),
2043 row_repeat ? 1 : 0, 18, 18);
2044
2045 if (dispc_ovl_color_mode_supported(dispc, plane, DRM_FORMAT_NV12)) {
2046 bool doublestride =
2047 fourcc == DRM_FORMAT_NV12 &&
2048 rotation_type == OMAP_DSS_ROT_TILER &&
2049 !drm_rotation_90_or_270(rotation);
2050
2051 /* DOUBLESTRIDE */
2052 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane),
2053 doublestride, 22, 22);
2054 }
2055 }
2056
color_mode_to_bpp(u32 fourcc)2057 static int color_mode_to_bpp(u32 fourcc)
2058 {
2059 switch (fourcc) {
2060 case DRM_FORMAT_NV12:
2061 return 8;
2062 case DRM_FORMAT_RGBX4444:
2063 case DRM_FORMAT_RGB565:
2064 case DRM_FORMAT_ARGB4444:
2065 case DRM_FORMAT_YUYV:
2066 case DRM_FORMAT_UYVY:
2067 case DRM_FORMAT_RGBA4444:
2068 case DRM_FORMAT_XRGB4444:
2069 case DRM_FORMAT_ARGB1555:
2070 case DRM_FORMAT_XRGB1555:
2071 return 16;
2072 case DRM_FORMAT_RGB888:
2073 return 24;
2074 case DRM_FORMAT_XRGB8888:
2075 case DRM_FORMAT_ARGB8888:
2076 case DRM_FORMAT_RGBA8888:
2077 case DRM_FORMAT_RGBX8888:
2078 return 32;
2079 default:
2080 BUG();
2081 return 0;
2082 }
2083 }
2084
pixinc(int pixels,u8 ps)2085 static s32 pixinc(int pixels, u8 ps)
2086 {
2087 if (pixels == 1)
2088 return 1;
2089 else if (pixels > 1)
2090 return 1 + (pixels - 1) * ps;
2091 else if (pixels < 0)
2092 return 1 - (-pixels + 1) * ps;
2093
2094 BUG();
2095 }
2096
calc_offset(u16 screen_width,u16 width,u32 fourcc,bool fieldmode,unsigned int field_offset,unsigned int * offset0,unsigned int * offset1,s32 * row_inc,s32 * pix_inc,int x_predecim,int y_predecim,enum omap_dss_rotation_type rotation_type,u8 rotation)2097 static void calc_offset(u16 screen_width, u16 width,
2098 u32 fourcc, bool fieldmode, unsigned int field_offset,
2099 unsigned int *offset0, unsigned int *offset1,
2100 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim,
2101 enum omap_dss_rotation_type rotation_type, u8 rotation)
2102 {
2103 u8 ps;
2104
2105 ps = color_mode_to_bpp(fourcc) / 8;
2106
2107 DSSDBG("scrw %d, width %d\n", screen_width, width);
2108
2109 if (rotation_type == OMAP_DSS_ROT_TILER &&
2110 (fourcc == DRM_FORMAT_UYVY || fourcc == DRM_FORMAT_YUYV) &&
2111 drm_rotation_90_or_270(rotation)) {
2112 /*
2113 * HACK: ROW_INC needs to be calculated with TILER units.
2114 * We get such 'screen_width' that multiplying it with the
2115 * YUV422 pixel size gives the correct TILER container width.
2116 * However, 'width' is in pixels and multiplying it with YUV422
2117 * pixel size gives incorrect result. We thus multiply it here
2118 * with 2 to match the 32 bit TILER unit size.
2119 */
2120 width *= 2;
2121 }
2122
2123 /*
2124 * field 0 = even field = bottom field
2125 * field 1 = odd field = top field
2126 */
2127 *offset0 = field_offset * screen_width * ps;
2128 *offset1 = 0;
2129
2130 *row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) +
2131 (fieldmode ? screen_width : 0), ps);
2132 if (fourcc == DRM_FORMAT_YUYV || fourcc == DRM_FORMAT_UYVY)
2133 *pix_inc = pixinc(x_predecim, 2 * ps);
2134 else
2135 *pix_inc = pixinc(x_predecim, ps);
2136 }
2137
2138 /*
2139 * This function is used to avoid synclosts in OMAP3, because of some
2140 * undocumented horizontal position and timing related limitations.
2141 */
check_horiz_timing_omap3(unsigned long pclk,unsigned long lclk,const struct videomode * vm,u16 pos_x,u16 width,u16 height,u16 out_width,u16 out_height,bool five_taps)2142 static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk,
2143 const struct videomode *vm, u16 pos_x,
2144 u16 width, u16 height, u16 out_width, u16 out_height,
2145 bool five_taps)
2146 {
2147 const int ds = DIV_ROUND_UP(height, out_height);
2148 unsigned long nonactive;
2149 static const u8 limits[3] = { 8, 10, 20 };
2150 u64 val, blank;
2151 int i;
2152
2153 nonactive = vm->hactive + vm->hfront_porch + vm->hsync_len +
2154 vm->hback_porch - out_width;
2155
2156 i = 0;
2157 if (out_height < height)
2158 i++;
2159 if (out_width < width)
2160 i++;
2161 blank = div_u64((u64)(vm->hback_porch + vm->hsync_len + vm->hfront_porch) *
2162 lclk, pclk);
2163 DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]);
2164 if (blank <= limits[i])
2165 return -EINVAL;
2166
2167 /* FIXME add checks for 3-tap filter once the limitations are known */
2168 if (!five_taps)
2169 return 0;
2170
2171 /*
2172 * Pixel data should be prepared before visible display point starts.
2173 * So, atleast DS-2 lines must have already been fetched by DISPC
2174 * during nonactive - pos_x period.
2175 */
2176 val = div_u64((u64)(nonactive - pos_x) * lclk, pclk);
2177 DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n",
2178 val, max(0, ds - 2) * width);
2179 if (val < max(0, ds - 2) * width)
2180 return -EINVAL;
2181
2182 /*
2183 * All lines need to be refilled during the nonactive period of which
2184 * only one line can be loaded during the active period. So, atleast
2185 * DS - 1 lines should be loaded during nonactive period.
2186 */
2187 val = div_u64((u64)nonactive * lclk, pclk);
2188 DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n",
2189 val, max(0, ds - 1) * width);
2190 if (val < max(0, ds - 1) * width)
2191 return -EINVAL;
2192
2193 return 0;
2194 }
2195
calc_core_clk_five_taps(unsigned long pclk,const struct videomode * vm,u16 width,u16 height,u16 out_width,u16 out_height,u32 fourcc)2196 static unsigned long calc_core_clk_five_taps(unsigned long pclk,
2197 const struct videomode *vm, u16 width,
2198 u16 height, u16 out_width, u16 out_height,
2199 u32 fourcc)
2200 {
2201 u32 core_clk = 0;
2202 u64 tmp;
2203
2204 if (height <= out_height && width <= out_width)
2205 return (unsigned long) pclk;
2206
2207 if (height > out_height) {
2208 unsigned int ppl = vm->hactive;
2209
2210 tmp = (u64)pclk * height * out_width;
2211 do_div(tmp, 2 * out_height * ppl);
2212 core_clk = tmp;
2213
2214 if (height > 2 * out_height) {
2215 if (ppl == out_width)
2216 return 0;
2217
2218 tmp = (u64)pclk * (height - 2 * out_height) * out_width;
2219 do_div(tmp, 2 * out_height * (ppl - out_width));
2220 core_clk = max_t(u32, core_clk, tmp);
2221 }
2222 }
2223
2224 if (width > out_width) {
2225 tmp = (u64)pclk * width;
2226 do_div(tmp, out_width);
2227 core_clk = max_t(u32, core_clk, tmp);
2228
2229 if (fourcc == DRM_FORMAT_XRGB8888)
2230 core_clk <<= 1;
2231 }
2232
2233 return core_clk;
2234 }
2235
calc_core_clk_24xx(unsigned long pclk,u16 width,u16 height,u16 out_width,u16 out_height,bool mem_to_mem)2236 static unsigned long calc_core_clk_24xx(unsigned long pclk, u16 width,
2237 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2238 {
2239 if (height > out_height && width > out_width)
2240 return pclk * 4;
2241 else
2242 return pclk * 2;
2243 }
2244
calc_core_clk_34xx(unsigned long pclk,u16 width,u16 height,u16 out_width,u16 out_height,bool mem_to_mem)2245 static unsigned long calc_core_clk_34xx(unsigned long pclk, u16 width,
2246 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2247 {
2248 unsigned int hf, vf;
2249
2250 /*
2251 * FIXME how to determine the 'A' factor
2252 * for the no downscaling case ?
2253 */
2254
2255 if (width > 3 * out_width)
2256 hf = 4;
2257 else if (width > 2 * out_width)
2258 hf = 3;
2259 else if (width > out_width)
2260 hf = 2;
2261 else
2262 hf = 1;
2263 if (height > out_height)
2264 vf = 2;
2265 else
2266 vf = 1;
2267
2268 return pclk * vf * hf;
2269 }
2270
calc_core_clk_44xx(unsigned long pclk,u16 width,u16 height,u16 out_width,u16 out_height,bool mem_to_mem)2271 static unsigned long calc_core_clk_44xx(unsigned long pclk, u16 width,
2272 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2273 {
2274 /*
2275 * If the overlay/writeback is in mem to mem mode, there are no
2276 * downscaling limitations with respect to pixel clock, return 1 as
2277 * required core clock to represent that we have sufficient enough
2278 * core clock to do maximum downscaling
2279 */
2280 if (mem_to_mem)
2281 return 1;
2282
2283 if (width > out_width)
2284 return DIV_ROUND_UP(pclk, out_width) * width;
2285 else
2286 return pclk;
2287 }
2288
dispc_ovl_calc_scaling_24xx(struct dispc_device * dispc,unsigned long pclk,unsigned long lclk,const struct videomode * vm,u16 width,u16 height,u16 out_width,u16 out_height,u32 fourcc,bool * five_taps,int * x_predecim,int * y_predecim,int * decim_x,int * decim_y,u16 pos_x,unsigned long * core_clk,bool mem_to_mem)2289 static int dispc_ovl_calc_scaling_24xx(struct dispc_device *dispc,
2290 unsigned long pclk, unsigned long lclk,
2291 const struct videomode *vm,
2292 u16 width, u16 height,
2293 u16 out_width, u16 out_height,
2294 u32 fourcc, bool *five_taps,
2295 int *x_predecim, int *y_predecim,
2296 int *decim_x, int *decim_y,
2297 u16 pos_x, unsigned long *core_clk,
2298 bool mem_to_mem)
2299 {
2300 int error;
2301 u16 in_width, in_height;
2302 int min_factor = min(*decim_x, *decim_y);
2303 const int maxsinglelinewidth = dispc->feat->max_line_width;
2304
2305 *five_taps = false;
2306
2307 do {
2308 in_height = height / *decim_y;
2309 in_width = width / *decim_x;
2310 *core_clk = dispc->feat->calc_core_clk(pclk, in_width,
2311 in_height, out_width, out_height, mem_to_mem);
2312 error = (in_width > maxsinglelinewidth || !*core_clk ||
2313 *core_clk > dispc_core_clk_rate(dispc));
2314 if (error) {
2315 if (*decim_x == *decim_y) {
2316 *decim_x = min_factor;
2317 ++*decim_y;
2318 } else {
2319 swap(*decim_x, *decim_y);
2320 if (*decim_x < *decim_y)
2321 ++*decim_x;
2322 }
2323 }
2324 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2325
2326 if (error) {
2327 DSSERR("failed to find scaling settings\n");
2328 return -EINVAL;
2329 }
2330
2331 if (in_width > maxsinglelinewidth) {
2332 DSSERR("Cannot scale max input width exceeded\n");
2333 return -EINVAL;
2334 }
2335 return 0;
2336 }
2337
dispc_ovl_calc_scaling_34xx(struct dispc_device * dispc,unsigned long pclk,unsigned long lclk,const struct videomode * vm,u16 width,u16 height,u16 out_width,u16 out_height,u32 fourcc,bool * five_taps,int * x_predecim,int * y_predecim,int * decim_x,int * decim_y,u16 pos_x,unsigned long * core_clk,bool mem_to_mem)2338 static int dispc_ovl_calc_scaling_34xx(struct dispc_device *dispc,
2339 unsigned long pclk, unsigned long lclk,
2340 const struct videomode *vm,
2341 u16 width, u16 height,
2342 u16 out_width, u16 out_height,
2343 u32 fourcc, bool *five_taps,
2344 int *x_predecim, int *y_predecim,
2345 int *decim_x, int *decim_y,
2346 u16 pos_x, unsigned long *core_clk,
2347 bool mem_to_mem)
2348 {
2349 int error;
2350 u16 in_width, in_height;
2351 const int maxsinglelinewidth = dispc->feat->max_line_width;
2352
2353 do {
2354 in_height = height / *decim_y;
2355 in_width = width / *decim_x;
2356 *five_taps = in_height > out_height;
2357
2358 if (in_width > maxsinglelinewidth)
2359 if (in_height > out_height &&
2360 in_height < out_height * 2)
2361 *five_taps = false;
2362 again:
2363 if (*five_taps)
2364 *core_clk = calc_core_clk_five_taps(pclk, vm,
2365 in_width, in_height, out_width,
2366 out_height, fourcc);
2367 else
2368 *core_clk = dispc->feat->calc_core_clk(pclk, in_width,
2369 in_height, out_width, out_height,
2370 mem_to_mem);
2371
2372 error = check_horiz_timing_omap3(pclk, lclk, vm,
2373 pos_x, in_width, in_height, out_width,
2374 out_height, *five_taps);
2375 if (error && *five_taps) {
2376 *five_taps = false;
2377 goto again;
2378 }
2379
2380 error = (error || in_width > maxsinglelinewidth * 2 ||
2381 (in_width > maxsinglelinewidth && *five_taps) ||
2382 !*core_clk || *core_clk > dispc_core_clk_rate(dispc));
2383
2384 if (!error) {
2385 /* verify that we're inside the limits of scaler */
2386 if (in_width / 4 > out_width)
2387 error = 1;
2388
2389 if (*five_taps) {
2390 if (in_height / 4 > out_height)
2391 error = 1;
2392 } else {
2393 if (in_height / 2 > out_height)
2394 error = 1;
2395 }
2396 }
2397
2398 if (error)
2399 ++*decim_y;
2400 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2401
2402 if (error) {
2403 DSSERR("failed to find scaling settings\n");
2404 return -EINVAL;
2405 }
2406
2407 if (check_horiz_timing_omap3(pclk, lclk, vm, pos_x, in_width,
2408 in_height, out_width, out_height, *five_taps)) {
2409 DSSERR("horizontal timing too tight\n");
2410 return -EINVAL;
2411 }
2412
2413 if (in_width > (maxsinglelinewidth * 2)) {
2414 DSSERR("Cannot setup scaling\n");
2415 DSSERR("width exceeds maximum width possible\n");
2416 return -EINVAL;
2417 }
2418
2419 if (in_width > maxsinglelinewidth && *five_taps) {
2420 DSSERR("cannot setup scaling with five taps\n");
2421 return -EINVAL;
2422 }
2423 return 0;
2424 }
2425
dispc_ovl_calc_scaling_44xx(struct dispc_device * dispc,unsigned long pclk,unsigned long lclk,const struct videomode * vm,u16 width,u16 height,u16 out_width,u16 out_height,u32 fourcc,bool * five_taps,int * x_predecim,int * y_predecim,int * decim_x,int * decim_y,u16 pos_x,unsigned long * core_clk,bool mem_to_mem)2426 static int dispc_ovl_calc_scaling_44xx(struct dispc_device *dispc,
2427 unsigned long pclk, unsigned long lclk,
2428 const struct videomode *vm,
2429 u16 width, u16 height,
2430 u16 out_width, u16 out_height,
2431 u32 fourcc, bool *five_taps,
2432 int *x_predecim, int *y_predecim,
2433 int *decim_x, int *decim_y,
2434 u16 pos_x, unsigned long *core_clk,
2435 bool mem_to_mem)
2436 {
2437 u16 in_width, in_width_max;
2438 int decim_x_min = *decim_x;
2439 u16 in_height = height / *decim_y;
2440 const int maxsinglelinewidth = dispc->feat->max_line_width;
2441 const int maxdownscale = dispc->feat->max_downscale;
2442
2443 if (mem_to_mem) {
2444 in_width_max = out_width * maxdownscale;
2445 } else {
2446 in_width_max = dispc_core_clk_rate(dispc)
2447 / DIV_ROUND_UP(pclk, out_width);
2448 }
2449
2450 *decim_x = DIV_ROUND_UP(width, in_width_max);
2451
2452 *decim_x = *decim_x > decim_x_min ? *decim_x : decim_x_min;
2453 if (*decim_x > *x_predecim)
2454 return -EINVAL;
2455
2456 do {
2457 in_width = width / *decim_x;
2458 } while (*decim_x <= *x_predecim &&
2459 in_width > maxsinglelinewidth && ++*decim_x);
2460
2461 if (in_width > maxsinglelinewidth) {
2462 DSSERR("Cannot scale width exceeds max line width\n");
2463 return -EINVAL;
2464 }
2465
2466 if (*decim_x > 4 && fourcc != DRM_FORMAT_NV12) {
2467 /*
2468 * Let's disable all scaling that requires horizontal
2469 * decimation with higher factor than 4, until we have
2470 * better estimates of what we can and can not
2471 * do. However, NV12 color format appears to work Ok
2472 * with all decimation factors.
2473 *
2474 * When decimating horizontally by more that 4 the dss
2475 * is not able to fetch the data in burst mode. When
2476 * this happens it is hard to tell if there enough
2477 * bandwidth. Despite what theory says this appears to
2478 * be true also for 16-bit color formats.
2479 */
2480 DSSERR("Not enough bandwidth, too much downscaling (x-decimation factor %d > 4)\n", *decim_x);
2481
2482 return -EINVAL;
2483 }
2484
2485 *core_clk = dispc->feat->calc_core_clk(pclk, in_width, in_height,
2486 out_width, out_height, mem_to_mem);
2487 return 0;
2488 }
2489
2490 #define DIV_FRAC(dividend, divisor) \
2491 ((dividend) * 100 / (divisor) - ((dividend) / (divisor) * 100))
2492
dispc_ovl_calc_scaling(struct dispc_device * dispc,enum omap_plane_id plane,unsigned long pclk,unsigned long lclk,enum omap_overlay_caps caps,const struct videomode * vm,u16 width,u16 height,u16 out_width,u16 out_height,u32 fourcc,bool * five_taps,int * x_predecim,int * y_predecim,u16 pos_x,enum omap_dss_rotation_type rotation_type,bool mem_to_mem)2493 static int dispc_ovl_calc_scaling(struct dispc_device *dispc,
2494 enum omap_plane_id plane,
2495 unsigned long pclk, unsigned long lclk,
2496 enum omap_overlay_caps caps,
2497 const struct videomode *vm,
2498 u16 width, u16 height,
2499 u16 out_width, u16 out_height,
2500 u32 fourcc, bool *five_taps,
2501 int *x_predecim, int *y_predecim, u16 pos_x,
2502 enum omap_dss_rotation_type rotation_type,
2503 bool mem_to_mem)
2504 {
2505 int maxhdownscale = dispc->feat->max_downscale;
2506 int maxvdownscale = dispc->feat->max_downscale;
2507 const int max_decim_limit = 16;
2508 unsigned long core_clk = 0;
2509 int decim_x, decim_y, ret;
2510
2511 if (width == out_width && height == out_height)
2512 return 0;
2513
2514 if (dispc->feat->supported_scaler_color_modes) {
2515 const u32 *modes = dispc->feat->supported_scaler_color_modes;
2516 unsigned int i;
2517
2518 for (i = 0; modes[i]; ++i) {
2519 if (modes[i] == fourcc)
2520 break;
2521 }
2522
2523 if (modes[i] == 0)
2524 return -EINVAL;
2525 }
2526
2527 if (plane == OMAP_DSS_WB) {
2528 switch (fourcc) {
2529 case DRM_FORMAT_NV12:
2530 maxhdownscale = maxvdownscale = 2;
2531 break;
2532 case DRM_FORMAT_YUYV:
2533 case DRM_FORMAT_UYVY:
2534 maxhdownscale = 2;
2535 maxvdownscale = 4;
2536 break;
2537 default:
2538 break;
2539 }
2540 }
2541 if (!mem_to_mem && (pclk == 0 || vm->pixelclock == 0)) {
2542 DSSERR("cannot calculate scaling settings: pclk is zero\n");
2543 return -EINVAL;
2544 }
2545
2546 if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
2547 return -EINVAL;
2548
2549 if (mem_to_mem) {
2550 *x_predecim = *y_predecim = 1;
2551 } else {
2552 *x_predecim = max_decim_limit;
2553 *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER &&
2554 dispc_has_feature(dispc, FEAT_BURST_2D)) ?
2555 2 : max_decim_limit;
2556 }
2557
2558 decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxhdownscale);
2559 decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxvdownscale);
2560
2561 if (decim_x > *x_predecim || out_width > width * 8)
2562 return -EINVAL;
2563
2564 if (decim_y > *y_predecim || out_height > height * 8)
2565 return -EINVAL;
2566
2567 ret = dispc->feat->calc_scaling(dispc, pclk, lclk, vm, width, height,
2568 out_width, out_height, fourcc,
2569 five_taps, x_predecim, y_predecim,
2570 &decim_x, &decim_y, pos_x, &core_clk,
2571 mem_to_mem);
2572 if (ret)
2573 return ret;
2574
2575 DSSDBG("%dx%d -> %dx%d (%d.%02d x %d.%02d), decim %dx%d %dx%d (%d.%02d x %d.%02d), taps %d, req clk %lu, cur clk %lu\n",
2576 width, height,
2577 out_width, out_height,
2578 out_width / width, DIV_FRAC(out_width, width),
2579 out_height / height, DIV_FRAC(out_height, height),
2580
2581 decim_x, decim_y,
2582 width / decim_x, height / decim_y,
2583 out_width / (width / decim_x), DIV_FRAC(out_width, width / decim_x),
2584 out_height / (height / decim_y), DIV_FRAC(out_height, height / decim_y),
2585
2586 *five_taps ? 5 : 3,
2587 core_clk, dispc_core_clk_rate(dispc));
2588
2589 if (!core_clk || core_clk > dispc_core_clk_rate(dispc)) {
2590 DSSERR("failed to set up scaling, "
2591 "required core clk rate = %lu Hz, "
2592 "current core clk rate = %lu Hz\n",
2593 core_clk, dispc_core_clk_rate(dispc));
2594 return -EINVAL;
2595 }
2596
2597 *x_predecim = decim_x;
2598 *y_predecim = decim_y;
2599 return 0;
2600 }
2601
dispc_ovl_setup_common(struct dispc_device * dispc,enum omap_plane_id plane,enum omap_overlay_caps caps,u32 paddr,u32 p_uv_addr,u16 screen_width,int pos_x,int pos_y,u16 width,u16 height,u16 out_width,u16 out_height,u32 fourcc,u8 rotation,u8 zorder,u8 pre_mult_alpha,u8 global_alpha,enum omap_dss_rotation_type rotation_type,bool replication,const struct videomode * vm,bool mem_to_mem,enum drm_color_encoding color_encoding,enum drm_color_range color_range)2602 static int dispc_ovl_setup_common(struct dispc_device *dispc,
2603 enum omap_plane_id plane,
2604 enum omap_overlay_caps caps,
2605 u32 paddr, u32 p_uv_addr,
2606 u16 screen_width, int pos_x, int pos_y,
2607 u16 width, u16 height,
2608 u16 out_width, u16 out_height,
2609 u32 fourcc, u8 rotation, u8 zorder,
2610 u8 pre_mult_alpha, u8 global_alpha,
2611 enum omap_dss_rotation_type rotation_type,
2612 bool replication, const struct videomode *vm,
2613 bool mem_to_mem,
2614 enum drm_color_encoding color_encoding,
2615 enum drm_color_range color_range)
2616 {
2617 bool five_taps = true;
2618 bool fieldmode = false;
2619 int r, cconv = 0;
2620 unsigned int offset0, offset1;
2621 s32 row_inc;
2622 s32 pix_inc;
2623 u16 frame_width;
2624 unsigned int field_offset = 0;
2625 u16 in_height = height;
2626 u16 in_width = width;
2627 int x_predecim = 1, y_predecim = 1;
2628 bool ilace = !!(vm->flags & DISPLAY_FLAGS_INTERLACED);
2629 unsigned long pclk = dispc_plane_pclk_rate(dispc, plane);
2630 unsigned long lclk = dispc_plane_lclk_rate(dispc, plane);
2631 const struct drm_format_info *info;
2632
2633 info = drm_format_info(fourcc);
2634
2635 /* when setting up WB, dispc_plane_pclk_rate() returns 0 */
2636 if (plane == OMAP_DSS_WB)
2637 pclk = vm->pixelclock;
2638
2639 if (paddr == 0 && rotation_type != OMAP_DSS_ROT_TILER)
2640 return -EINVAL;
2641
2642 if (info->is_yuv && (in_width & 1)) {
2643 DSSERR("input width %d is not even for YUV format\n", in_width);
2644 return -EINVAL;
2645 }
2646
2647 out_width = out_width == 0 ? width : out_width;
2648 out_height = out_height == 0 ? height : out_height;
2649
2650 if (plane != OMAP_DSS_WB) {
2651 if (ilace && height == out_height)
2652 fieldmode = true;
2653
2654 if (ilace) {
2655 if (fieldmode)
2656 in_height /= 2;
2657 pos_y /= 2;
2658 out_height /= 2;
2659
2660 DSSDBG("adjusting for ilace: height %d, pos_y %d, out_height %d\n",
2661 in_height, pos_y, out_height);
2662 }
2663 }
2664
2665 if (!dispc_ovl_color_mode_supported(dispc, plane, fourcc))
2666 return -EINVAL;
2667
2668 r = dispc_ovl_calc_scaling(dispc, plane, pclk, lclk, caps, vm, in_width,
2669 in_height, out_width, out_height, fourcc,
2670 &five_taps, &x_predecim, &y_predecim, pos_x,
2671 rotation_type, mem_to_mem);
2672 if (r)
2673 return r;
2674
2675 in_width = in_width / x_predecim;
2676 in_height = in_height / y_predecim;
2677
2678 if (x_predecim > 1 || y_predecim > 1)
2679 DSSDBG("predecimation %d x %x, new input size %d x %d\n",
2680 x_predecim, y_predecim, in_width, in_height);
2681
2682 if (info->is_yuv && (in_width & 1)) {
2683 DSSDBG("predecimated input width is not even for YUV format\n");
2684 DSSDBG("adjusting input width %d -> %d\n",
2685 in_width, in_width & ~1);
2686
2687 in_width &= ~1;
2688 }
2689
2690 if (info->is_yuv)
2691 cconv = 1;
2692
2693 if (ilace && !fieldmode) {
2694 /*
2695 * when downscaling the bottom field may have to start several
2696 * source lines below the top field. Unfortunately ACCUI
2697 * registers will only hold the fractional part of the offset
2698 * so the integer part must be added to the base address of the
2699 * bottom field.
2700 */
2701 if (!in_height || in_height == out_height)
2702 field_offset = 0;
2703 else
2704 field_offset = in_height / out_height / 2;
2705 }
2706
2707 /* Fields are independent but interleaved in memory. */
2708 if (fieldmode)
2709 field_offset = 1;
2710
2711 offset0 = 0;
2712 offset1 = 0;
2713 row_inc = 0;
2714 pix_inc = 0;
2715
2716 if (plane == OMAP_DSS_WB)
2717 frame_width = out_width;
2718 else
2719 frame_width = in_width;
2720
2721 calc_offset(screen_width, frame_width,
2722 fourcc, fieldmode, field_offset,
2723 &offset0, &offset1, &row_inc, &pix_inc,
2724 x_predecim, y_predecim,
2725 rotation_type, rotation);
2726
2727 DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
2728 offset0, offset1, row_inc, pix_inc);
2729
2730 dispc_ovl_set_color_mode(dispc, plane, fourcc);
2731
2732 dispc_ovl_configure_burst_type(dispc, plane, rotation_type);
2733
2734 if (dispc->feat->reverse_ilace_field_order)
2735 swap(offset0, offset1);
2736
2737 dispc_ovl_set_ba0(dispc, plane, paddr + offset0);
2738 dispc_ovl_set_ba1(dispc, plane, paddr + offset1);
2739
2740 if (fourcc == DRM_FORMAT_NV12) {
2741 dispc_ovl_set_ba0_uv(dispc, plane, p_uv_addr + offset0);
2742 dispc_ovl_set_ba1_uv(dispc, plane, p_uv_addr + offset1);
2743 }
2744
2745 if (dispc->feat->last_pixel_inc_missing)
2746 row_inc += pix_inc - 1;
2747
2748 dispc_ovl_set_row_inc(dispc, plane, row_inc);
2749 dispc_ovl_set_pix_inc(dispc, plane, pix_inc);
2750
2751 DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width,
2752 in_height, out_width, out_height);
2753
2754 dispc_ovl_set_pos(dispc, plane, caps, pos_x, pos_y);
2755
2756 dispc_ovl_set_input_size(dispc, plane, in_width, in_height);
2757
2758 if (caps & OMAP_DSS_OVL_CAP_SCALE) {
2759 dispc_ovl_set_scaling(dispc, plane, in_width, in_height,
2760 out_width, out_height, ilace, five_taps,
2761 fieldmode, fourcc, rotation);
2762 dispc_ovl_set_output_size(dispc, plane, out_width, out_height);
2763 dispc_ovl_set_vid_color_conv(dispc, plane, cconv);
2764
2765 if (plane != OMAP_DSS_WB)
2766 dispc_ovl_set_csc(dispc, plane, color_encoding, color_range);
2767 }
2768
2769 dispc_ovl_set_rotation_attrs(dispc, plane, rotation, rotation_type,
2770 fourcc);
2771
2772 dispc_ovl_set_zorder(dispc, plane, caps, zorder);
2773 dispc_ovl_set_pre_mult_alpha(dispc, plane, caps, pre_mult_alpha);
2774 dispc_ovl_setup_global_alpha(dispc, plane, caps, global_alpha);
2775
2776 dispc_ovl_enable_replication(dispc, plane, caps, replication);
2777
2778 return 0;
2779 }
2780
dispc_ovl_setup(struct dispc_device * dispc,enum omap_plane_id plane,const struct omap_overlay_info * oi,const struct videomode * vm,bool mem_to_mem,enum omap_channel channel)2781 int dispc_ovl_setup(struct dispc_device *dispc,
2782 enum omap_plane_id plane,
2783 const struct omap_overlay_info *oi,
2784 const struct videomode *vm, bool mem_to_mem,
2785 enum omap_channel channel)
2786 {
2787 int r;
2788 enum omap_overlay_caps caps = dispc->feat->overlay_caps[plane];
2789 const bool replication = true;
2790
2791 DSSDBG("dispc_ovl_setup %d, pa %pad, pa_uv %pad, sw %d, %d,%d, %dx%d ->"
2792 " %dx%d, cmode %x, rot %d, chan %d repl %d\n",
2793 plane, &oi->paddr, &oi->p_uv_addr, oi->screen_width, oi->pos_x,
2794 oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height,
2795 oi->fourcc, oi->rotation, channel, replication);
2796
2797 dispc_ovl_set_channel_out(dispc, plane, channel);
2798
2799 r = dispc_ovl_setup_common(dispc, plane, caps, oi->paddr, oi->p_uv_addr,
2800 oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
2801 oi->out_width, oi->out_height, oi->fourcc, oi->rotation,
2802 oi->zorder, oi->pre_mult_alpha, oi->global_alpha,
2803 oi->rotation_type, replication, vm, mem_to_mem,
2804 oi->color_encoding, oi->color_range);
2805
2806 return r;
2807 }
2808
dispc_wb_setup(struct dispc_device * dispc,const struct omap_dss_writeback_info * wi,bool mem_to_mem,const struct videomode * vm,enum dss_writeback_channel channel_in)2809 int dispc_wb_setup(struct dispc_device *dispc,
2810 const struct omap_dss_writeback_info *wi,
2811 bool mem_to_mem, const struct videomode *vm,
2812 enum dss_writeback_channel channel_in)
2813 {
2814 int r;
2815 u32 l;
2816 enum omap_plane_id plane = OMAP_DSS_WB;
2817 const int pos_x = 0, pos_y = 0;
2818 const u8 zorder = 0, global_alpha = 0;
2819 const bool replication = true;
2820 bool truncation;
2821 int in_width = vm->hactive;
2822 int in_height = vm->vactive;
2823 enum omap_overlay_caps caps =
2824 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA;
2825
2826 if (vm->flags & DISPLAY_FLAGS_INTERLACED)
2827 in_height /= 2;
2828
2829 DSSDBG("dispc_wb_setup, pa %x, pa_uv %x, %d,%d -> %dx%d, cmode %x, "
2830 "rot %d\n", wi->paddr, wi->p_uv_addr, in_width,
2831 in_height, wi->width, wi->height, wi->fourcc, wi->rotation);
2832
2833 r = dispc_ovl_setup_common(dispc, plane, caps, wi->paddr, wi->p_uv_addr,
2834 wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width,
2835 wi->height, wi->fourcc, wi->rotation, zorder,
2836 wi->pre_mult_alpha, global_alpha, wi->rotation_type,
2837 replication, vm, mem_to_mem, DRM_COLOR_YCBCR_BT601,
2838 DRM_COLOR_YCBCR_LIMITED_RANGE);
2839 if (r)
2840 return r;
2841
2842 switch (wi->fourcc) {
2843 case DRM_FORMAT_RGB565:
2844 case DRM_FORMAT_RGB888:
2845 case DRM_FORMAT_ARGB4444:
2846 case DRM_FORMAT_RGBA4444:
2847 case DRM_FORMAT_RGBX4444:
2848 case DRM_FORMAT_ARGB1555:
2849 case DRM_FORMAT_XRGB1555:
2850 case DRM_FORMAT_XRGB4444:
2851 truncation = true;
2852 break;
2853 default:
2854 truncation = false;
2855 break;
2856 }
2857
2858 /* setup extra DISPC_WB_ATTRIBUTES */
2859 l = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
2860 l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */
2861 l = FLD_MOD(l, channel_in, 18, 16); /* CHANNELIN */
2862 l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */
2863 if (mem_to_mem)
2864 l = FLD_MOD(l, 1, 26, 24); /* CAPTUREMODE */
2865 else
2866 l = FLD_MOD(l, 0, 26, 24); /* CAPTUREMODE */
2867 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), l);
2868
2869 if (mem_to_mem) {
2870 /* WBDELAYCOUNT */
2871 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), 0, 7, 0);
2872 } else {
2873 u32 wbdelay;
2874
2875 if (channel_in == DSS_WB_TV_MGR)
2876 wbdelay = vm->vsync_len + vm->vback_porch;
2877 else
2878 wbdelay = vm->vfront_porch + vm->vsync_len +
2879 vm->vback_porch;
2880
2881 if (vm->flags & DISPLAY_FLAGS_INTERLACED)
2882 wbdelay /= 2;
2883
2884 wbdelay = min(wbdelay, 255u);
2885
2886 /* WBDELAYCOUNT */
2887 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0);
2888 }
2889
2890 return 0;
2891 }
2892
dispc_has_writeback(struct dispc_device * dispc)2893 bool dispc_has_writeback(struct dispc_device *dispc)
2894 {
2895 return dispc->feat->has_writeback;
2896 }
2897
dispc_ovl_enable(struct dispc_device * dispc,enum omap_plane_id plane,bool enable)2898 int dispc_ovl_enable(struct dispc_device *dispc,
2899 enum omap_plane_id plane, bool enable)
2900 {
2901 DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
2902
2903 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
2904
2905 return 0;
2906 }
2907
dispc_lcd_enable_signal_polarity(struct dispc_device * dispc,bool act_high)2908 static void dispc_lcd_enable_signal_polarity(struct dispc_device *dispc,
2909 bool act_high)
2910 {
2911 if (!dispc_has_feature(dispc, FEAT_LCDENABLEPOL))
2912 return;
2913
2914 REG_FLD_MOD(dispc, DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
2915 }
2916
dispc_lcd_enable_signal(struct dispc_device * dispc,bool enable)2917 void dispc_lcd_enable_signal(struct dispc_device *dispc, bool enable)
2918 {
2919 if (!dispc_has_feature(dispc, FEAT_LCDENABLESIGNAL))
2920 return;
2921
2922 REG_FLD_MOD(dispc, DISPC_CONTROL, enable ? 1 : 0, 28, 28);
2923 }
2924
dispc_pck_free_enable(struct dispc_device * dispc,bool enable)2925 void dispc_pck_free_enable(struct dispc_device *dispc, bool enable)
2926 {
2927 if (!dispc_has_feature(dispc, FEAT_PCKFREEENABLE))
2928 return;
2929
2930 REG_FLD_MOD(dispc, DISPC_CONTROL, enable ? 1 : 0, 27, 27);
2931 }
2932
dispc_mgr_enable_fifohandcheck(struct dispc_device * dispc,enum omap_channel channel,bool enable)2933 static void dispc_mgr_enable_fifohandcheck(struct dispc_device *dispc,
2934 enum omap_channel channel,
2935 bool enable)
2936 {
2937 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable);
2938 }
2939
2940
dispc_mgr_set_lcd_type_tft(struct dispc_device * dispc,enum omap_channel channel)2941 static void dispc_mgr_set_lcd_type_tft(struct dispc_device *dispc,
2942 enum omap_channel channel)
2943 {
2944 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_STNTFT, 1);
2945 }
2946
dispc_set_loadmode(struct dispc_device * dispc,enum omap_dss_load_mode mode)2947 static void dispc_set_loadmode(struct dispc_device *dispc,
2948 enum omap_dss_load_mode mode)
2949 {
2950 REG_FLD_MOD(dispc, DISPC_CONFIG, mode, 2, 1);
2951 }
2952
2953
dispc_mgr_set_default_color(struct dispc_device * dispc,enum omap_channel channel,u32 color)2954 static void dispc_mgr_set_default_color(struct dispc_device *dispc,
2955 enum omap_channel channel, u32 color)
2956 {
2957 dispc_write_reg(dispc, DISPC_DEFAULT_COLOR(channel), color);
2958 }
2959
dispc_mgr_set_trans_key(struct dispc_device * dispc,enum omap_channel ch,enum omap_dss_trans_key_type type,u32 trans_key)2960 static void dispc_mgr_set_trans_key(struct dispc_device *dispc,
2961 enum omap_channel ch,
2962 enum omap_dss_trans_key_type type,
2963 u32 trans_key)
2964 {
2965 mgr_fld_write(dispc, ch, DISPC_MGR_FLD_TCKSELECTION, type);
2966
2967 dispc_write_reg(dispc, DISPC_TRANS_COLOR(ch), trans_key);
2968 }
2969
dispc_mgr_enable_trans_key(struct dispc_device * dispc,enum omap_channel ch,bool enable)2970 static void dispc_mgr_enable_trans_key(struct dispc_device *dispc,
2971 enum omap_channel ch, bool enable)
2972 {
2973 mgr_fld_write(dispc, ch, DISPC_MGR_FLD_TCKENABLE, enable);
2974 }
2975
dispc_mgr_enable_alpha_fixed_zorder(struct dispc_device * dispc,enum omap_channel ch,bool enable)2976 static void dispc_mgr_enable_alpha_fixed_zorder(struct dispc_device *dispc,
2977 enum omap_channel ch,
2978 bool enable)
2979 {
2980 if (!dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER))
2981 return;
2982
2983 if (ch == OMAP_DSS_CHANNEL_LCD)
2984 REG_FLD_MOD(dispc, DISPC_CONFIG, enable, 18, 18);
2985 else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2986 REG_FLD_MOD(dispc, DISPC_CONFIG, enable, 19, 19);
2987 }
2988
dispc_mgr_setup(struct dispc_device * dispc,enum omap_channel channel,const struct omap_overlay_manager_info * info)2989 void dispc_mgr_setup(struct dispc_device *dispc,
2990 enum omap_channel channel,
2991 const struct omap_overlay_manager_info *info)
2992 {
2993 dispc_mgr_set_default_color(dispc, channel, info->default_color);
2994 dispc_mgr_set_trans_key(dispc, channel, info->trans_key_type,
2995 info->trans_key);
2996 dispc_mgr_enable_trans_key(dispc, channel, info->trans_enabled);
2997 dispc_mgr_enable_alpha_fixed_zorder(dispc, channel,
2998 info->partial_alpha_enabled);
2999 if (dispc_has_feature(dispc, FEAT_CPR)) {
3000 dispc_mgr_enable_cpr(dispc, channel, info->cpr_enable);
3001 dispc_mgr_set_cpr_coef(dispc, channel, &info->cpr_coefs);
3002 }
3003 }
3004
dispc_mgr_set_tft_data_lines(struct dispc_device * dispc,enum omap_channel channel,u8 data_lines)3005 static void dispc_mgr_set_tft_data_lines(struct dispc_device *dispc,
3006 enum omap_channel channel,
3007 u8 data_lines)
3008 {
3009 int code;
3010
3011 switch (data_lines) {
3012 case 12:
3013 code = 0;
3014 break;
3015 case 16:
3016 code = 1;
3017 break;
3018 case 18:
3019 code = 2;
3020 break;
3021 case 24:
3022 code = 3;
3023 break;
3024 default:
3025 BUG();
3026 return;
3027 }
3028
3029 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_TFTDATALINES, code);
3030 }
3031
dispc_mgr_set_io_pad_mode(struct dispc_device * dispc,enum dss_io_pad_mode mode)3032 static void dispc_mgr_set_io_pad_mode(struct dispc_device *dispc,
3033 enum dss_io_pad_mode mode)
3034 {
3035 u32 l;
3036 int gpout0, gpout1;
3037
3038 switch (mode) {
3039 case DSS_IO_PAD_MODE_RESET:
3040 gpout0 = 0;
3041 gpout1 = 0;
3042 break;
3043 case DSS_IO_PAD_MODE_RFBI:
3044 gpout0 = 1;
3045 gpout1 = 0;
3046 break;
3047 case DSS_IO_PAD_MODE_BYPASS:
3048 gpout0 = 1;
3049 gpout1 = 1;
3050 break;
3051 default:
3052 BUG();
3053 return;
3054 }
3055
3056 l = dispc_read_reg(dispc, DISPC_CONTROL);
3057 l = FLD_MOD(l, gpout0, 15, 15);
3058 l = FLD_MOD(l, gpout1, 16, 16);
3059 dispc_write_reg(dispc, DISPC_CONTROL, l);
3060 }
3061
dispc_mgr_enable_stallmode(struct dispc_device * dispc,enum omap_channel channel,bool enable)3062 static void dispc_mgr_enable_stallmode(struct dispc_device *dispc,
3063 enum omap_channel channel, bool enable)
3064 {
3065 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_STALLMODE, enable);
3066 }
3067
dispc_mgr_set_lcd_config(struct dispc_device * dispc,enum omap_channel channel,const struct dss_lcd_mgr_config * config)3068 void dispc_mgr_set_lcd_config(struct dispc_device *dispc,
3069 enum omap_channel channel,
3070 const struct dss_lcd_mgr_config *config)
3071 {
3072 dispc_mgr_set_io_pad_mode(dispc, config->io_pad_mode);
3073
3074 dispc_mgr_enable_stallmode(dispc, channel, config->stallmode);
3075 dispc_mgr_enable_fifohandcheck(dispc, channel, config->fifohandcheck);
3076
3077 dispc_mgr_set_clock_div(dispc, channel, &config->clock_info);
3078
3079 dispc_mgr_set_tft_data_lines(dispc, channel, config->video_port_width);
3080
3081 dispc_lcd_enable_signal_polarity(dispc, config->lcden_sig_polarity);
3082
3083 dispc_mgr_set_lcd_type_tft(dispc, channel);
3084 }
3085
_dispc_mgr_size_ok(struct dispc_device * dispc,u16 width,u16 height)3086 static bool _dispc_mgr_size_ok(struct dispc_device *dispc,
3087 u16 width, u16 height)
3088 {
3089 return width <= dispc->feat->mgr_width_max &&
3090 height <= dispc->feat->mgr_height_max;
3091 }
3092
_dispc_lcd_timings_ok(struct dispc_device * dispc,int hsync_len,int hfp,int hbp,int vsw,int vfp,int vbp)3093 static bool _dispc_lcd_timings_ok(struct dispc_device *dispc,
3094 int hsync_len, int hfp, int hbp,
3095 int vsw, int vfp, int vbp)
3096 {
3097 if (hsync_len < 1 || hsync_len > dispc->feat->sw_max ||
3098 hfp < 1 || hfp > dispc->feat->hp_max ||
3099 hbp < 1 || hbp > dispc->feat->hp_max ||
3100 vsw < 1 || vsw > dispc->feat->sw_max ||
3101 vfp < 0 || vfp > dispc->feat->vp_max ||
3102 vbp < 0 || vbp > dispc->feat->vp_max)
3103 return false;
3104 return true;
3105 }
3106
_dispc_mgr_pclk_ok(struct dispc_device * dispc,enum omap_channel channel,unsigned long pclk)3107 static bool _dispc_mgr_pclk_ok(struct dispc_device *dispc,
3108 enum omap_channel channel,
3109 unsigned long pclk)
3110 {
3111 if (dss_mgr_is_lcd(channel))
3112 return pclk <= dispc->feat->max_lcd_pclk;
3113 else
3114 return pclk <= dispc->feat->max_tv_pclk;
3115 }
3116
dispc_mgr_check_timings(struct dispc_device * dispc,enum omap_channel channel,const struct videomode * vm)3117 int dispc_mgr_check_timings(struct dispc_device *dispc,
3118 enum omap_channel channel,
3119 const struct videomode *vm)
3120 {
3121 if (!_dispc_mgr_size_ok(dispc, vm->hactive, vm->vactive))
3122 return MODE_BAD;
3123
3124 if (!_dispc_mgr_pclk_ok(dispc, channel, vm->pixelclock))
3125 return MODE_BAD;
3126
3127 if (dss_mgr_is_lcd(channel)) {
3128 /* TODO: OMAP4+ supports interlace for LCD outputs */
3129 if (vm->flags & DISPLAY_FLAGS_INTERLACED)
3130 return MODE_BAD;
3131
3132 if (!_dispc_lcd_timings_ok(dispc, vm->hsync_len,
3133 vm->hfront_porch, vm->hback_porch,
3134 vm->vsync_len, vm->vfront_porch,
3135 vm->vback_porch))
3136 return MODE_BAD;
3137 }
3138
3139 return MODE_OK;
3140 }
3141
_dispc_mgr_set_lcd_timings(struct dispc_device * dispc,enum omap_channel channel,const struct videomode * vm)3142 static void _dispc_mgr_set_lcd_timings(struct dispc_device *dispc,
3143 enum omap_channel channel,
3144 const struct videomode *vm)
3145 {
3146 u32 timing_h, timing_v, l;
3147 bool onoff, rf, ipc, vs, hs, de;
3148
3149 timing_h = FLD_VAL(vm->hsync_len - 1, dispc->feat->sw_start, 0) |
3150 FLD_VAL(vm->hfront_porch - 1, dispc->feat->fp_start, 8) |
3151 FLD_VAL(vm->hback_porch - 1, dispc->feat->bp_start, 20);
3152 timing_v = FLD_VAL(vm->vsync_len - 1, dispc->feat->sw_start, 0) |
3153 FLD_VAL(vm->vfront_porch, dispc->feat->fp_start, 8) |
3154 FLD_VAL(vm->vback_porch, dispc->feat->bp_start, 20);
3155
3156 dispc_write_reg(dispc, DISPC_TIMING_H(channel), timing_h);
3157 dispc_write_reg(dispc, DISPC_TIMING_V(channel), timing_v);
3158
3159 vs = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
3160 hs = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);
3161 de = !!(vm->flags & DISPLAY_FLAGS_DE_LOW);
3162 ipc = !!(vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE);
3163 onoff = true; /* always use the 'rf' setting */
3164 rf = !!(vm->flags & DISPLAY_FLAGS_SYNC_POSEDGE);
3165
3166 l = FLD_VAL(onoff, 17, 17) |
3167 FLD_VAL(rf, 16, 16) |
3168 FLD_VAL(de, 15, 15) |
3169 FLD_VAL(ipc, 14, 14) |
3170 FLD_VAL(hs, 13, 13) |
3171 FLD_VAL(vs, 12, 12);
3172
3173 /* always set ALIGN bit when available */
3174 if (dispc->feat->supports_sync_align)
3175 l |= (1 << 18);
3176
3177 dispc_write_reg(dispc, DISPC_POL_FREQ(channel), l);
3178
3179 if (dispc->syscon_pol) {
3180 const int shifts[] = {
3181 [OMAP_DSS_CHANNEL_LCD] = 0,
3182 [OMAP_DSS_CHANNEL_LCD2] = 1,
3183 [OMAP_DSS_CHANNEL_LCD3] = 2,
3184 };
3185
3186 u32 mask, val;
3187
3188 mask = (1 << 0) | (1 << 3) | (1 << 6);
3189 val = (rf << 0) | (ipc << 3) | (onoff << 6);
3190
3191 mask <<= 16 + shifts[channel];
3192 val <<= 16 + shifts[channel];
3193
3194 regmap_update_bits(dispc->syscon_pol, dispc->syscon_pol_offset,
3195 mask, val);
3196 }
3197 }
3198
vm_flag_to_int(enum display_flags flags,enum display_flags high,enum display_flags low)3199 static int vm_flag_to_int(enum display_flags flags, enum display_flags high,
3200 enum display_flags low)
3201 {
3202 if (flags & high)
3203 return 1;
3204 if (flags & low)
3205 return -1;
3206 return 0;
3207 }
3208
3209 /* change name to mode? */
dispc_mgr_set_timings(struct dispc_device * dispc,enum omap_channel channel,const struct videomode * vm)3210 void dispc_mgr_set_timings(struct dispc_device *dispc,
3211 enum omap_channel channel,
3212 const struct videomode *vm)
3213 {
3214 unsigned int xtot, ytot;
3215 unsigned long ht, vt;
3216 struct videomode t = *vm;
3217
3218 DSSDBG("channel %d xres %u yres %u\n", channel, t.hactive, t.vactive);
3219
3220 if (dispc_mgr_check_timings(dispc, channel, &t)) {
3221 BUG();
3222 return;
3223 }
3224
3225 if (dss_mgr_is_lcd(channel)) {
3226 _dispc_mgr_set_lcd_timings(dispc, channel, &t);
3227
3228 xtot = t.hactive + t.hfront_porch + t.hsync_len + t.hback_porch;
3229 ytot = t.vactive + t.vfront_porch + t.vsync_len + t.vback_porch;
3230
3231 ht = vm->pixelclock / xtot;
3232 vt = vm->pixelclock / xtot / ytot;
3233
3234 DSSDBG("pck %lu\n", vm->pixelclock);
3235 DSSDBG("hsync_len %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
3236 t.hsync_len, t.hfront_porch, t.hback_porch,
3237 t.vsync_len, t.vfront_porch, t.vback_porch);
3238 DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n",
3239 vm_flag_to_int(t.flags, DISPLAY_FLAGS_VSYNC_HIGH, DISPLAY_FLAGS_VSYNC_LOW),
3240 vm_flag_to_int(t.flags, DISPLAY_FLAGS_HSYNC_HIGH, DISPLAY_FLAGS_HSYNC_LOW),
3241 vm_flag_to_int(t.flags, DISPLAY_FLAGS_PIXDATA_POSEDGE, DISPLAY_FLAGS_PIXDATA_NEGEDGE),
3242 vm_flag_to_int(t.flags, DISPLAY_FLAGS_DE_HIGH, DISPLAY_FLAGS_DE_LOW),
3243 vm_flag_to_int(t.flags, DISPLAY_FLAGS_SYNC_POSEDGE, DISPLAY_FLAGS_SYNC_NEGEDGE));
3244
3245 DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
3246 } else {
3247 if (t.flags & DISPLAY_FLAGS_INTERLACED)
3248 t.vactive /= 2;
3249
3250 if (dispc->feat->supports_double_pixel)
3251 REG_FLD_MOD(dispc, DISPC_CONTROL,
3252 !!(t.flags & DISPLAY_FLAGS_DOUBLECLK),
3253 19, 17);
3254 }
3255
3256 dispc_mgr_set_size(dispc, channel, t.hactive, t.vactive);
3257 }
3258
dispc_mgr_set_lcd_divisor(struct dispc_device * dispc,enum omap_channel channel,u16 lck_div,u16 pck_div)3259 static void dispc_mgr_set_lcd_divisor(struct dispc_device *dispc,
3260 enum omap_channel channel, u16 lck_div,
3261 u16 pck_div)
3262 {
3263 BUG_ON(lck_div < 1);
3264 BUG_ON(pck_div < 1);
3265
3266 dispc_write_reg(dispc, DISPC_DIVISORo(channel),
3267 FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
3268
3269 if (!dispc_has_feature(dispc, FEAT_CORE_CLK_DIV) &&
3270 channel == OMAP_DSS_CHANNEL_LCD)
3271 dispc->core_clk_rate = dispc_fclk_rate(dispc) / lck_div;
3272 }
3273
dispc_mgr_get_lcd_divisor(struct dispc_device * dispc,enum omap_channel channel,int * lck_div,int * pck_div)3274 static void dispc_mgr_get_lcd_divisor(struct dispc_device *dispc,
3275 enum omap_channel channel, int *lck_div,
3276 int *pck_div)
3277 {
3278 u32 l;
3279 l = dispc_read_reg(dispc, DISPC_DIVISORo(channel));
3280 *lck_div = FLD_GET(l, 23, 16);
3281 *pck_div = FLD_GET(l, 7, 0);
3282 }
3283
dispc_fclk_rate(struct dispc_device * dispc)3284 static unsigned long dispc_fclk_rate(struct dispc_device *dispc)
3285 {
3286 unsigned long r;
3287 enum dss_clk_source src;
3288
3289 src = dss_get_dispc_clk_source(dispc->dss);
3290
3291 if (src == DSS_CLK_SRC_FCK) {
3292 r = dss_get_dispc_clk_rate(dispc->dss);
3293 } else {
3294 struct dss_pll *pll;
3295 unsigned int clkout_idx;
3296
3297 pll = dss_pll_find_by_src(dispc->dss, src);
3298 clkout_idx = dss_pll_get_clkout_idx_for_src(src);
3299
3300 r = pll->cinfo.clkout[clkout_idx];
3301 }
3302
3303 return r;
3304 }
3305
dispc_mgr_lclk_rate(struct dispc_device * dispc,enum omap_channel channel)3306 static unsigned long dispc_mgr_lclk_rate(struct dispc_device *dispc,
3307 enum omap_channel channel)
3308 {
3309 int lcd;
3310 unsigned long r;
3311 enum dss_clk_source src;
3312
3313 /* for TV, LCLK rate is the FCLK rate */
3314 if (!dss_mgr_is_lcd(channel))
3315 return dispc_fclk_rate(dispc);
3316
3317 src = dss_get_lcd_clk_source(dispc->dss, channel);
3318
3319 if (src == DSS_CLK_SRC_FCK) {
3320 r = dss_get_dispc_clk_rate(dispc->dss);
3321 } else {
3322 struct dss_pll *pll;
3323 unsigned int clkout_idx;
3324
3325 pll = dss_pll_find_by_src(dispc->dss, src);
3326 clkout_idx = dss_pll_get_clkout_idx_for_src(src);
3327
3328 r = pll->cinfo.clkout[clkout_idx];
3329 }
3330
3331 lcd = REG_GET(dispc, DISPC_DIVISORo(channel), 23, 16);
3332
3333 return r / lcd;
3334 }
3335
dispc_mgr_pclk_rate(struct dispc_device * dispc,enum omap_channel channel)3336 static unsigned long dispc_mgr_pclk_rate(struct dispc_device *dispc,
3337 enum omap_channel channel)
3338 {
3339 unsigned long r;
3340
3341 if (dss_mgr_is_lcd(channel)) {
3342 int pcd;
3343 u32 l;
3344
3345 l = dispc_read_reg(dispc, DISPC_DIVISORo(channel));
3346
3347 pcd = FLD_GET(l, 7, 0);
3348
3349 r = dispc_mgr_lclk_rate(dispc, channel);
3350
3351 return r / pcd;
3352 } else {
3353 return dispc->tv_pclk_rate;
3354 }
3355 }
3356
dispc_set_tv_pclk(struct dispc_device * dispc,unsigned long pclk)3357 void dispc_set_tv_pclk(struct dispc_device *dispc, unsigned long pclk)
3358 {
3359 dispc->tv_pclk_rate = pclk;
3360 }
3361
dispc_core_clk_rate(struct dispc_device * dispc)3362 static unsigned long dispc_core_clk_rate(struct dispc_device *dispc)
3363 {
3364 return dispc->core_clk_rate;
3365 }
3366
dispc_plane_pclk_rate(struct dispc_device * dispc,enum omap_plane_id plane)3367 static unsigned long dispc_plane_pclk_rate(struct dispc_device *dispc,
3368 enum omap_plane_id plane)
3369 {
3370 enum omap_channel channel;
3371
3372 if (plane == OMAP_DSS_WB)
3373 return 0;
3374
3375 channel = dispc_ovl_get_channel_out(dispc, plane);
3376
3377 return dispc_mgr_pclk_rate(dispc, channel);
3378 }
3379
dispc_plane_lclk_rate(struct dispc_device * dispc,enum omap_plane_id plane)3380 static unsigned long dispc_plane_lclk_rate(struct dispc_device *dispc,
3381 enum omap_plane_id plane)
3382 {
3383 enum omap_channel channel;
3384
3385 if (plane == OMAP_DSS_WB)
3386 return 0;
3387
3388 channel = dispc_ovl_get_channel_out(dispc, plane);
3389
3390 return dispc_mgr_lclk_rate(dispc, channel);
3391 }
3392
dispc_dump_clocks_channel(struct dispc_device * dispc,struct seq_file * s,enum omap_channel channel)3393 static void dispc_dump_clocks_channel(struct dispc_device *dispc,
3394 struct seq_file *s,
3395 enum omap_channel channel)
3396 {
3397 int lcd, pcd;
3398 enum dss_clk_source lcd_clk_src;
3399
3400 seq_printf(s, "- %s -\n", mgr_desc[channel].name);
3401
3402 lcd_clk_src = dss_get_lcd_clk_source(dispc->dss, channel);
3403
3404 seq_printf(s, "%s clk source = %s\n", mgr_desc[channel].name,
3405 dss_get_clk_source_name(lcd_clk_src));
3406
3407 dispc_mgr_get_lcd_divisor(dispc, channel, &lcd, &pcd);
3408
3409 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3410 dispc_mgr_lclk_rate(dispc, channel), lcd);
3411 seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
3412 dispc_mgr_pclk_rate(dispc, channel), pcd);
3413 }
3414
dispc_dump_clocks(struct dispc_device * dispc,struct seq_file * s)3415 void dispc_dump_clocks(struct dispc_device *dispc, struct seq_file *s)
3416 {
3417 enum dss_clk_source dispc_clk_src;
3418 int lcd;
3419 u32 l;
3420
3421 if (dispc_runtime_get(dispc))
3422 return;
3423
3424 seq_printf(s, "- DISPC -\n");
3425
3426 dispc_clk_src = dss_get_dispc_clk_source(dispc->dss);
3427 seq_printf(s, "dispc fclk source = %s\n",
3428 dss_get_clk_source_name(dispc_clk_src));
3429
3430 seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate(dispc));
3431
3432 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV)) {
3433 seq_printf(s, "- DISPC-CORE-CLK -\n");
3434 l = dispc_read_reg(dispc, DISPC_DIVISOR);
3435 lcd = FLD_GET(l, 23, 16);
3436
3437 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3438 (dispc_fclk_rate(dispc)/lcd), lcd);
3439 }
3440
3441 dispc_dump_clocks_channel(dispc, s, OMAP_DSS_CHANNEL_LCD);
3442
3443 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
3444 dispc_dump_clocks_channel(dispc, s, OMAP_DSS_CHANNEL_LCD2);
3445 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
3446 dispc_dump_clocks_channel(dispc, s, OMAP_DSS_CHANNEL_LCD3);
3447
3448 dispc_runtime_put(dispc);
3449 }
3450
dispc_dump_regs(struct seq_file * s,void * p)3451 static int dispc_dump_regs(struct seq_file *s, void *p)
3452 {
3453 struct dispc_device *dispc = s->private;
3454 int i, j;
3455 const char *mgr_names[] = {
3456 [OMAP_DSS_CHANNEL_LCD] = "LCD",
3457 [OMAP_DSS_CHANNEL_DIGIT] = "TV",
3458 [OMAP_DSS_CHANNEL_LCD2] = "LCD2",
3459 [OMAP_DSS_CHANNEL_LCD3] = "LCD3",
3460 };
3461 const char *ovl_names[] = {
3462 [OMAP_DSS_GFX] = "GFX",
3463 [OMAP_DSS_VIDEO1] = "VID1",
3464 [OMAP_DSS_VIDEO2] = "VID2",
3465 [OMAP_DSS_VIDEO3] = "VID3",
3466 [OMAP_DSS_WB] = "WB",
3467 };
3468 const char **p_names;
3469
3470 #define DUMPREG(dispc, r) \
3471 seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(dispc, r))
3472
3473 if (dispc_runtime_get(dispc))
3474 return 0;
3475
3476 /* DISPC common registers */
3477 DUMPREG(dispc, DISPC_REVISION);
3478 DUMPREG(dispc, DISPC_SYSCONFIG);
3479 DUMPREG(dispc, DISPC_SYSSTATUS);
3480 DUMPREG(dispc, DISPC_IRQSTATUS);
3481 DUMPREG(dispc, DISPC_IRQENABLE);
3482 DUMPREG(dispc, DISPC_CONTROL);
3483 DUMPREG(dispc, DISPC_CONFIG);
3484 DUMPREG(dispc, DISPC_CAPABLE);
3485 DUMPREG(dispc, DISPC_LINE_STATUS);
3486 DUMPREG(dispc, DISPC_LINE_NUMBER);
3487 if (dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER) ||
3488 dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
3489 DUMPREG(dispc, DISPC_GLOBAL_ALPHA);
3490 if (dispc_has_feature(dispc, FEAT_MGR_LCD2)) {
3491 DUMPREG(dispc, DISPC_CONTROL2);
3492 DUMPREG(dispc, DISPC_CONFIG2);
3493 }
3494 if (dispc_has_feature(dispc, FEAT_MGR_LCD3)) {
3495 DUMPREG(dispc, DISPC_CONTROL3);
3496 DUMPREG(dispc, DISPC_CONFIG3);
3497 }
3498 if (dispc_has_feature(dispc, FEAT_MFLAG))
3499 DUMPREG(dispc, DISPC_GLOBAL_MFLAG_ATTRIBUTE);
3500
3501 #undef DUMPREG
3502
3503 #define DISPC_REG(i, name) name(i)
3504 #define DUMPREG(dispc, i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
3505 (int)(48 - strlen(#r) - strlen(p_names[i])), " ", \
3506 dispc_read_reg(dispc, DISPC_REG(i, r)))
3507
3508 p_names = mgr_names;
3509
3510 /* DISPC channel specific registers */
3511 for (i = 0; i < dispc_get_num_mgrs(dispc); i++) {
3512 DUMPREG(dispc, i, DISPC_DEFAULT_COLOR);
3513 DUMPREG(dispc, i, DISPC_TRANS_COLOR);
3514 DUMPREG(dispc, i, DISPC_SIZE_MGR);
3515
3516 if (i == OMAP_DSS_CHANNEL_DIGIT)
3517 continue;
3518
3519 DUMPREG(dispc, i, DISPC_TIMING_H);
3520 DUMPREG(dispc, i, DISPC_TIMING_V);
3521 DUMPREG(dispc, i, DISPC_POL_FREQ);
3522 DUMPREG(dispc, i, DISPC_DIVISORo);
3523
3524 DUMPREG(dispc, i, DISPC_DATA_CYCLE1);
3525 DUMPREG(dispc, i, DISPC_DATA_CYCLE2);
3526 DUMPREG(dispc, i, DISPC_DATA_CYCLE3);
3527
3528 if (dispc_has_feature(dispc, FEAT_CPR)) {
3529 DUMPREG(dispc, i, DISPC_CPR_COEF_R);
3530 DUMPREG(dispc, i, DISPC_CPR_COEF_G);
3531 DUMPREG(dispc, i, DISPC_CPR_COEF_B);
3532 }
3533 }
3534
3535 p_names = ovl_names;
3536
3537 for (i = 0; i < dispc_get_num_ovls(dispc); i++) {
3538 DUMPREG(dispc, i, DISPC_OVL_BA0);
3539 DUMPREG(dispc, i, DISPC_OVL_BA1);
3540 DUMPREG(dispc, i, DISPC_OVL_POSITION);
3541 DUMPREG(dispc, i, DISPC_OVL_SIZE);
3542 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES);
3543 DUMPREG(dispc, i, DISPC_OVL_FIFO_THRESHOLD);
3544 DUMPREG(dispc, i, DISPC_OVL_FIFO_SIZE_STATUS);
3545 DUMPREG(dispc, i, DISPC_OVL_ROW_INC);
3546 DUMPREG(dispc, i, DISPC_OVL_PIXEL_INC);
3547
3548 if (dispc_has_feature(dispc, FEAT_PRELOAD))
3549 DUMPREG(dispc, i, DISPC_OVL_PRELOAD);
3550 if (dispc_has_feature(dispc, FEAT_MFLAG))
3551 DUMPREG(dispc, i, DISPC_OVL_MFLAG_THRESHOLD);
3552
3553 if (i == OMAP_DSS_GFX) {
3554 DUMPREG(dispc, i, DISPC_OVL_WINDOW_SKIP);
3555 DUMPREG(dispc, i, DISPC_OVL_TABLE_BA);
3556 continue;
3557 }
3558
3559 DUMPREG(dispc, i, DISPC_OVL_FIR);
3560 DUMPREG(dispc, i, DISPC_OVL_PICTURE_SIZE);
3561 DUMPREG(dispc, i, DISPC_OVL_ACCU0);
3562 DUMPREG(dispc, i, DISPC_OVL_ACCU1);
3563 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
3564 DUMPREG(dispc, i, DISPC_OVL_BA0_UV);
3565 DUMPREG(dispc, i, DISPC_OVL_BA1_UV);
3566 DUMPREG(dispc, i, DISPC_OVL_FIR2);
3567 DUMPREG(dispc, i, DISPC_OVL_ACCU2_0);
3568 DUMPREG(dispc, i, DISPC_OVL_ACCU2_1);
3569 }
3570 if (dispc_has_feature(dispc, FEAT_ATTR2))
3571 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES2);
3572 }
3573
3574 if (dispc->feat->has_writeback) {
3575 i = OMAP_DSS_WB;
3576 DUMPREG(dispc, i, DISPC_OVL_BA0);
3577 DUMPREG(dispc, i, DISPC_OVL_BA1);
3578 DUMPREG(dispc, i, DISPC_OVL_SIZE);
3579 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES);
3580 DUMPREG(dispc, i, DISPC_OVL_FIFO_THRESHOLD);
3581 DUMPREG(dispc, i, DISPC_OVL_FIFO_SIZE_STATUS);
3582 DUMPREG(dispc, i, DISPC_OVL_ROW_INC);
3583 DUMPREG(dispc, i, DISPC_OVL_PIXEL_INC);
3584
3585 if (dispc_has_feature(dispc, FEAT_MFLAG))
3586 DUMPREG(dispc, i, DISPC_OVL_MFLAG_THRESHOLD);
3587
3588 DUMPREG(dispc, i, DISPC_OVL_FIR);
3589 DUMPREG(dispc, i, DISPC_OVL_PICTURE_SIZE);
3590 DUMPREG(dispc, i, DISPC_OVL_ACCU0);
3591 DUMPREG(dispc, i, DISPC_OVL_ACCU1);
3592 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
3593 DUMPREG(dispc, i, DISPC_OVL_BA0_UV);
3594 DUMPREG(dispc, i, DISPC_OVL_BA1_UV);
3595 DUMPREG(dispc, i, DISPC_OVL_FIR2);
3596 DUMPREG(dispc, i, DISPC_OVL_ACCU2_0);
3597 DUMPREG(dispc, i, DISPC_OVL_ACCU2_1);
3598 }
3599 if (dispc_has_feature(dispc, FEAT_ATTR2))
3600 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES2);
3601 }
3602
3603 #undef DISPC_REG
3604 #undef DUMPREG
3605
3606 #define DISPC_REG(plane, name, i) name(plane, i)
3607 #define DUMPREG(dispc, plane, name, i) \
3608 seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
3609 (int)(46 - strlen(#name) - strlen(p_names[plane])), " ", \
3610 dispc_read_reg(dispc, DISPC_REG(plane, name, i)))
3611
3612 /* Video pipeline coefficient registers */
3613
3614 /* start from OMAP_DSS_VIDEO1 */
3615 for (i = 1; i < dispc_get_num_ovls(dispc); i++) {
3616 for (j = 0; j < 8; j++)
3617 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_H, j);
3618
3619 for (j = 0; j < 8; j++)
3620 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_HV, j);
3621
3622 for (j = 0; j < 5; j++)
3623 DUMPREG(dispc, i, DISPC_OVL_CONV_COEF, j);
3624
3625 if (dispc_has_feature(dispc, FEAT_FIR_COEF_V)) {
3626 for (j = 0; j < 8; j++)
3627 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_V, j);
3628 }
3629
3630 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
3631 for (j = 0; j < 8; j++)
3632 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_H2, j);
3633
3634 for (j = 0; j < 8; j++)
3635 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_HV2, j);
3636
3637 for (j = 0; j < 8; j++)
3638 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_V2, j);
3639 }
3640 }
3641
3642 dispc_runtime_put(dispc);
3643
3644 #undef DISPC_REG
3645 #undef DUMPREG
3646
3647 return 0;
3648 }
3649
3650 /* calculate clock rates using dividers in cinfo */
dispc_calc_clock_rates(struct dispc_device * dispc,unsigned long dispc_fclk_rate,struct dispc_clock_info * cinfo)3651 int dispc_calc_clock_rates(struct dispc_device *dispc,
3652 unsigned long dispc_fclk_rate,
3653 struct dispc_clock_info *cinfo)
3654 {
3655 if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
3656 return -EINVAL;
3657 if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
3658 return -EINVAL;
3659
3660 cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
3661 cinfo->pck = cinfo->lck / cinfo->pck_div;
3662
3663 return 0;
3664 }
3665
dispc_div_calc(struct dispc_device * dispc,unsigned long dispc_freq,unsigned long pck_min,unsigned long pck_max,dispc_div_calc_func func,void * data)3666 bool dispc_div_calc(struct dispc_device *dispc, unsigned long dispc_freq,
3667 unsigned long pck_min, unsigned long pck_max,
3668 dispc_div_calc_func func, void *data)
3669 {
3670 int lckd, lckd_start, lckd_stop;
3671 int pckd, pckd_start, pckd_stop;
3672 unsigned long pck, lck;
3673 unsigned long lck_max;
3674 unsigned long pckd_hw_min, pckd_hw_max;
3675 unsigned int min_fck_per_pck;
3676 unsigned long fck;
3677
3678 #ifdef CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK
3679 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
3680 #else
3681 min_fck_per_pck = 0;
3682 #endif
3683
3684 pckd_hw_min = dispc->feat->min_pcd;
3685 pckd_hw_max = 255;
3686
3687 lck_max = dss_get_max_fck_rate(dispc->dss);
3688
3689 pck_min = pck_min ? pck_min : 1;
3690 pck_max = pck_max ? pck_max : ULONG_MAX;
3691
3692 lckd_start = max(DIV_ROUND_UP(dispc_freq, lck_max), 1ul);
3693 lckd_stop = min(dispc_freq / pck_min, 255ul);
3694
3695 for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) {
3696 lck = dispc_freq / lckd;
3697
3698 pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min);
3699 pckd_stop = min(lck / pck_min, pckd_hw_max);
3700
3701 for (pckd = pckd_start; pckd <= pckd_stop; ++pckd) {
3702 pck = lck / pckd;
3703
3704 /*
3705 * For OMAP2/3 the DISPC fclk is the same as LCD's logic
3706 * clock, which means we're configuring DISPC fclk here
3707 * also. Thus we need to use the calculated lck. For
3708 * OMAP4+ the DISPC fclk is a separate clock.
3709 */
3710 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV))
3711 fck = dispc_core_clk_rate(dispc);
3712 else
3713 fck = lck;
3714
3715 if (fck < pck * min_fck_per_pck)
3716 continue;
3717
3718 if (func(lckd, pckd, lck, pck, data))
3719 return true;
3720 }
3721 }
3722
3723 return false;
3724 }
3725
dispc_mgr_set_clock_div(struct dispc_device * dispc,enum omap_channel channel,const struct dispc_clock_info * cinfo)3726 void dispc_mgr_set_clock_div(struct dispc_device *dispc,
3727 enum omap_channel channel,
3728 const struct dispc_clock_info *cinfo)
3729 {
3730 DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
3731 DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
3732
3733 dispc_mgr_set_lcd_divisor(dispc, channel, cinfo->lck_div,
3734 cinfo->pck_div);
3735 }
3736
dispc_mgr_get_clock_div(struct dispc_device * dispc,enum omap_channel channel,struct dispc_clock_info * cinfo)3737 int dispc_mgr_get_clock_div(struct dispc_device *dispc,
3738 enum omap_channel channel,
3739 struct dispc_clock_info *cinfo)
3740 {
3741 unsigned long fck;
3742
3743 fck = dispc_fclk_rate(dispc);
3744
3745 cinfo->lck_div = REG_GET(dispc, DISPC_DIVISORo(channel), 23, 16);
3746 cinfo->pck_div = REG_GET(dispc, DISPC_DIVISORo(channel), 7, 0);
3747
3748 cinfo->lck = fck / cinfo->lck_div;
3749 cinfo->pck = cinfo->lck / cinfo->pck_div;
3750
3751 return 0;
3752 }
3753
dispc_read_irqstatus(struct dispc_device * dispc)3754 u32 dispc_read_irqstatus(struct dispc_device *dispc)
3755 {
3756 return dispc_read_reg(dispc, DISPC_IRQSTATUS);
3757 }
3758
dispc_clear_irqstatus(struct dispc_device * dispc,u32 mask)3759 void dispc_clear_irqstatus(struct dispc_device *dispc, u32 mask)
3760 {
3761 dispc_write_reg(dispc, DISPC_IRQSTATUS, mask);
3762 }
3763
dispc_write_irqenable(struct dispc_device * dispc,u32 mask)3764 void dispc_write_irqenable(struct dispc_device *dispc, u32 mask)
3765 {
3766 u32 old_mask = dispc_read_reg(dispc, DISPC_IRQENABLE);
3767
3768 /* clear the irqstatus for newly enabled irqs */
3769 dispc_clear_irqstatus(dispc, (mask ^ old_mask) & mask);
3770
3771 dispc_write_reg(dispc, DISPC_IRQENABLE, mask);
3772
3773 /* flush posted write */
3774 dispc_read_reg(dispc, DISPC_IRQENABLE);
3775 }
3776
dispc_enable_sidle(struct dispc_device * dispc)3777 void dispc_enable_sidle(struct dispc_device *dispc)
3778 {
3779 /* SIDLEMODE: smart idle */
3780 REG_FLD_MOD(dispc, DISPC_SYSCONFIG, 2, 4, 3);
3781 }
3782
dispc_disable_sidle(struct dispc_device * dispc)3783 void dispc_disable_sidle(struct dispc_device *dispc)
3784 {
3785 REG_FLD_MOD(dispc, DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */
3786 }
3787
dispc_mgr_gamma_size(struct dispc_device * dispc,enum omap_channel channel)3788 u32 dispc_mgr_gamma_size(struct dispc_device *dispc,
3789 enum omap_channel channel)
3790 {
3791 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3792
3793 if (!dispc->feat->has_gamma_table)
3794 return 0;
3795
3796 return gdesc->len;
3797 }
3798
dispc_mgr_write_gamma_table(struct dispc_device * dispc,enum omap_channel channel)3799 static void dispc_mgr_write_gamma_table(struct dispc_device *dispc,
3800 enum omap_channel channel)
3801 {
3802 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3803 u32 *table = dispc->gamma_table[channel];
3804 unsigned int i;
3805
3806 DSSDBG("%s: channel %d\n", __func__, channel);
3807
3808 for (i = 0; i < gdesc->len; ++i) {
3809 u32 v = table[i];
3810
3811 if (gdesc->has_index)
3812 v |= i << 24;
3813 else if (i == 0)
3814 v |= 1 << 31;
3815
3816 dispc_write_reg(dispc, gdesc->reg, v);
3817 }
3818 }
3819
dispc_restore_gamma_tables(struct dispc_device * dispc)3820 static void dispc_restore_gamma_tables(struct dispc_device *dispc)
3821 {
3822 DSSDBG("%s()\n", __func__);
3823
3824 if (!dispc->feat->has_gamma_table)
3825 return;
3826
3827 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_LCD);
3828
3829 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_DIGIT);
3830
3831 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
3832 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_LCD2);
3833
3834 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
3835 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_LCD3);
3836 }
3837
3838 static const struct drm_color_lut dispc_mgr_gamma_default_lut[] = {
3839 { .red = 0, .green = 0, .blue = 0, },
3840 { .red = U16_MAX, .green = U16_MAX, .blue = U16_MAX, },
3841 };
3842
dispc_mgr_set_gamma(struct dispc_device * dispc,enum omap_channel channel,const struct drm_color_lut * lut,unsigned int length)3843 void dispc_mgr_set_gamma(struct dispc_device *dispc,
3844 enum omap_channel channel,
3845 const struct drm_color_lut *lut,
3846 unsigned int length)
3847 {
3848 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3849 u32 *table = dispc->gamma_table[channel];
3850 uint i;
3851
3852 DSSDBG("%s: channel %d, lut len %u, hw len %u\n", __func__,
3853 channel, length, gdesc->len);
3854
3855 if (!dispc->feat->has_gamma_table)
3856 return;
3857
3858 if (lut == NULL || length < 2) {
3859 lut = dispc_mgr_gamma_default_lut;
3860 length = ARRAY_SIZE(dispc_mgr_gamma_default_lut);
3861 }
3862
3863 for (i = 0; i < length - 1; ++i) {
3864 uint first = i * (gdesc->len - 1) / (length - 1);
3865 uint last = (i + 1) * (gdesc->len - 1) / (length - 1);
3866 uint w = last - first;
3867 u16 r, g, b;
3868 uint j;
3869
3870 if (w == 0)
3871 continue;
3872
3873 for (j = 0; j <= w; j++) {
3874 r = (lut[i].red * (w - j) + lut[i+1].red * j) / w;
3875 g = (lut[i].green * (w - j) + lut[i+1].green * j) / w;
3876 b = (lut[i].blue * (w - j) + lut[i+1].blue * j) / w;
3877
3878 r >>= 16 - gdesc->bits;
3879 g >>= 16 - gdesc->bits;
3880 b >>= 16 - gdesc->bits;
3881
3882 table[first + j] = (r << (gdesc->bits * 2)) |
3883 (g << gdesc->bits) | b;
3884 }
3885 }
3886
3887 if (dispc->is_enabled)
3888 dispc_mgr_write_gamma_table(dispc, channel);
3889 }
3890
dispc_init_gamma_tables(struct dispc_device * dispc)3891 static int dispc_init_gamma_tables(struct dispc_device *dispc)
3892 {
3893 int channel;
3894
3895 if (!dispc->feat->has_gamma_table)
3896 return 0;
3897
3898 for (channel = 0; channel < ARRAY_SIZE(dispc->gamma_table); channel++) {
3899 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3900 u32 *gt;
3901
3902 if (channel == OMAP_DSS_CHANNEL_LCD2 &&
3903 !dispc_has_feature(dispc, FEAT_MGR_LCD2))
3904 continue;
3905
3906 if (channel == OMAP_DSS_CHANNEL_LCD3 &&
3907 !dispc_has_feature(dispc, FEAT_MGR_LCD3))
3908 continue;
3909
3910 gt = devm_kmalloc_array(&dispc->pdev->dev, gdesc->len,
3911 sizeof(u32), GFP_KERNEL);
3912 if (!gt)
3913 return -ENOMEM;
3914
3915 dispc->gamma_table[channel] = gt;
3916
3917 dispc_mgr_set_gamma(dispc, channel, NULL, 0);
3918 }
3919 return 0;
3920 }
3921
_omap_dispc_initial_config(struct dispc_device * dispc)3922 static void _omap_dispc_initial_config(struct dispc_device *dispc)
3923 {
3924 u32 l;
3925
3926 /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
3927 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV)) {
3928 l = dispc_read_reg(dispc, DISPC_DIVISOR);
3929 /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
3930 l = FLD_MOD(l, 1, 0, 0);
3931 l = FLD_MOD(l, 1, 23, 16);
3932 dispc_write_reg(dispc, DISPC_DIVISOR, l);
3933
3934 dispc->core_clk_rate = dispc_fclk_rate(dispc);
3935 }
3936
3937 /* Use gamma table mode, instead of palette mode */
3938 if (dispc->feat->has_gamma_table)
3939 REG_FLD_MOD(dispc, DISPC_CONFIG, 1, 3, 3);
3940
3941 /* For older DSS versions (FEAT_FUNCGATED) this enables
3942 * func-clock auto-gating. For newer versions
3943 * (dispc->feat->has_gamma_table) this enables tv-out gamma tables.
3944 */
3945 if (dispc_has_feature(dispc, FEAT_FUNCGATED) ||
3946 dispc->feat->has_gamma_table)
3947 REG_FLD_MOD(dispc, DISPC_CONFIG, 1, 9, 9);
3948
3949 dispc_set_loadmode(dispc, OMAP_DSS_LOAD_FRAME_ONLY);
3950
3951 dispc_init_fifos(dispc);
3952
3953 dispc_configure_burst_sizes(dispc);
3954
3955 dispc_ovl_enable_zorder_planes(dispc);
3956
3957 if (dispc->feat->mstandby_workaround)
3958 REG_FLD_MOD(dispc, DISPC_MSTANDBY_CTRL, 1, 0, 0);
3959
3960 if (dispc_has_feature(dispc, FEAT_MFLAG))
3961 dispc_init_mflag(dispc);
3962 }
3963
3964 static const enum dispc_feature_id omap2_dispc_features_list[] = {
3965 FEAT_LCDENABLEPOL,
3966 FEAT_LCDENABLESIGNAL,
3967 FEAT_PCKFREEENABLE,
3968 FEAT_FUNCGATED,
3969 FEAT_ROWREPEATENABLE,
3970 FEAT_RESIZECONF,
3971 };
3972
3973 static const enum dispc_feature_id omap3_dispc_features_list[] = {
3974 FEAT_LCDENABLEPOL,
3975 FEAT_LCDENABLESIGNAL,
3976 FEAT_PCKFREEENABLE,
3977 FEAT_FUNCGATED,
3978 FEAT_LINEBUFFERSPLIT,
3979 FEAT_ROWREPEATENABLE,
3980 FEAT_RESIZECONF,
3981 FEAT_CPR,
3982 FEAT_PRELOAD,
3983 FEAT_FIR_COEF_V,
3984 FEAT_ALPHA_FIXED_ZORDER,
3985 FEAT_FIFO_MERGE,
3986 FEAT_OMAP3_DSI_FIFO_BUG,
3987 };
3988
3989 static const enum dispc_feature_id am43xx_dispc_features_list[] = {
3990 FEAT_LCDENABLEPOL,
3991 FEAT_LCDENABLESIGNAL,
3992 FEAT_PCKFREEENABLE,
3993 FEAT_FUNCGATED,
3994 FEAT_LINEBUFFERSPLIT,
3995 FEAT_ROWREPEATENABLE,
3996 FEAT_RESIZECONF,
3997 FEAT_CPR,
3998 FEAT_PRELOAD,
3999 FEAT_FIR_COEF_V,
4000 FEAT_ALPHA_FIXED_ZORDER,
4001 FEAT_FIFO_MERGE,
4002 };
4003
4004 static const enum dispc_feature_id omap4_dispc_features_list[] = {
4005 FEAT_MGR_LCD2,
4006 FEAT_CORE_CLK_DIV,
4007 FEAT_HANDLE_UV_SEPARATE,
4008 FEAT_ATTR2,
4009 FEAT_CPR,
4010 FEAT_PRELOAD,
4011 FEAT_FIR_COEF_V,
4012 FEAT_ALPHA_FREE_ZORDER,
4013 FEAT_FIFO_MERGE,
4014 FEAT_BURST_2D,
4015 };
4016
4017 static const enum dispc_feature_id omap5_dispc_features_list[] = {
4018 FEAT_MGR_LCD2,
4019 FEAT_MGR_LCD3,
4020 FEAT_CORE_CLK_DIV,
4021 FEAT_HANDLE_UV_SEPARATE,
4022 FEAT_ATTR2,
4023 FEAT_CPR,
4024 FEAT_PRELOAD,
4025 FEAT_FIR_COEF_V,
4026 FEAT_ALPHA_FREE_ZORDER,
4027 FEAT_FIFO_MERGE,
4028 FEAT_BURST_2D,
4029 FEAT_MFLAG,
4030 };
4031
4032 static const struct dss_reg_field omap2_dispc_reg_fields[] = {
4033 [FEAT_REG_FIRHINC] = { 11, 0 },
4034 [FEAT_REG_FIRVINC] = { 27, 16 },
4035 [FEAT_REG_FIFOLOWTHRESHOLD] = { 8, 0 },
4036 [FEAT_REG_FIFOHIGHTHRESHOLD] = { 24, 16 },
4037 [FEAT_REG_FIFOSIZE] = { 8, 0 },
4038 [FEAT_REG_HORIZONTALACCU] = { 9, 0 },
4039 [FEAT_REG_VERTICALACCU] = { 25, 16 },
4040 };
4041
4042 static const struct dss_reg_field omap3_dispc_reg_fields[] = {
4043 [FEAT_REG_FIRHINC] = { 12, 0 },
4044 [FEAT_REG_FIRVINC] = { 28, 16 },
4045 [FEAT_REG_FIFOLOWTHRESHOLD] = { 11, 0 },
4046 [FEAT_REG_FIFOHIGHTHRESHOLD] = { 27, 16 },
4047 [FEAT_REG_FIFOSIZE] = { 10, 0 },
4048 [FEAT_REG_HORIZONTALACCU] = { 9, 0 },
4049 [FEAT_REG_VERTICALACCU] = { 25, 16 },
4050 };
4051
4052 static const struct dss_reg_field omap4_dispc_reg_fields[] = {
4053 [FEAT_REG_FIRHINC] = { 12, 0 },
4054 [FEAT_REG_FIRVINC] = { 28, 16 },
4055 [FEAT_REG_FIFOLOWTHRESHOLD] = { 15, 0 },
4056 [FEAT_REG_FIFOHIGHTHRESHOLD] = { 31, 16 },
4057 [FEAT_REG_FIFOSIZE] = { 15, 0 },
4058 [FEAT_REG_HORIZONTALACCU] = { 10, 0 },
4059 [FEAT_REG_VERTICALACCU] = { 26, 16 },
4060 };
4061
4062 static const enum omap_overlay_caps omap2_dispc_overlay_caps[] = {
4063 /* OMAP_DSS_GFX */
4064 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4065
4066 /* OMAP_DSS_VIDEO1 */
4067 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4068 OMAP_DSS_OVL_CAP_REPLICATION,
4069
4070 /* OMAP_DSS_VIDEO2 */
4071 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4072 OMAP_DSS_OVL_CAP_REPLICATION,
4073 };
4074
4075 static const enum omap_overlay_caps omap3430_dispc_overlay_caps[] = {
4076 /* OMAP_DSS_GFX */
4077 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA | OMAP_DSS_OVL_CAP_POS |
4078 OMAP_DSS_OVL_CAP_REPLICATION,
4079
4080 /* OMAP_DSS_VIDEO1 */
4081 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4082 OMAP_DSS_OVL_CAP_REPLICATION,
4083
4084 /* OMAP_DSS_VIDEO2 */
4085 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4086 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4087 };
4088
4089 static const enum omap_overlay_caps omap3630_dispc_overlay_caps[] = {
4090 /* OMAP_DSS_GFX */
4091 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA |
4092 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4093
4094 /* OMAP_DSS_VIDEO1 */
4095 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4096 OMAP_DSS_OVL_CAP_REPLICATION,
4097
4098 /* OMAP_DSS_VIDEO2 */
4099 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4100 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_POS |
4101 OMAP_DSS_OVL_CAP_REPLICATION,
4102 };
4103
4104 static const enum omap_overlay_caps omap4_dispc_overlay_caps[] = {
4105 /* OMAP_DSS_GFX */
4106 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA |
4107 OMAP_DSS_OVL_CAP_ZORDER | OMAP_DSS_OVL_CAP_POS |
4108 OMAP_DSS_OVL_CAP_REPLICATION,
4109
4110 /* OMAP_DSS_VIDEO1 */
4111 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4112 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_ZORDER |
4113 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4114
4115 /* OMAP_DSS_VIDEO2 */
4116 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4117 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_ZORDER |
4118 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4119
4120 /* OMAP_DSS_VIDEO3 */
4121 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4122 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_ZORDER |
4123 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4124 };
4125
4126 #define COLOR_ARRAY(arr...) (const u32[]) { arr, 0 }
4127
4128 static const u32 *omap2_dispc_supported_color_modes[] = {
4129
4130 /* OMAP_DSS_GFX */
4131 COLOR_ARRAY(
4132 DRM_FORMAT_RGBX4444, DRM_FORMAT_RGB565,
4133 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB888),
4134
4135 /* OMAP_DSS_VIDEO1 */
4136 COLOR_ARRAY(
4137 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4138 DRM_FORMAT_RGB888, DRM_FORMAT_YUYV,
4139 DRM_FORMAT_UYVY),
4140
4141 /* OMAP_DSS_VIDEO2 */
4142 COLOR_ARRAY(
4143 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4144 DRM_FORMAT_RGB888, DRM_FORMAT_YUYV,
4145 DRM_FORMAT_UYVY),
4146 };
4147
4148 static const u32 *omap3_dispc_supported_color_modes[] = {
4149 /* OMAP_DSS_GFX */
4150 COLOR_ARRAY(
4151 DRM_FORMAT_RGBX4444, DRM_FORMAT_ARGB4444,
4152 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4153 DRM_FORMAT_RGB888, DRM_FORMAT_ARGB8888,
4154 DRM_FORMAT_RGBA8888, DRM_FORMAT_RGBX8888),
4155
4156 /* OMAP_DSS_VIDEO1 */
4157 COLOR_ARRAY(
4158 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB888,
4159 DRM_FORMAT_RGBX4444, DRM_FORMAT_RGB565,
4160 DRM_FORMAT_YUYV, DRM_FORMAT_UYVY),
4161
4162 /* OMAP_DSS_VIDEO2 */
4163 COLOR_ARRAY(
4164 DRM_FORMAT_RGBX4444, DRM_FORMAT_ARGB4444,
4165 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4166 DRM_FORMAT_RGB888, DRM_FORMAT_YUYV,
4167 DRM_FORMAT_UYVY, DRM_FORMAT_ARGB8888,
4168 DRM_FORMAT_RGBA8888, DRM_FORMAT_RGBX8888),
4169 };
4170
4171 static const u32 *omap4_dispc_supported_color_modes[] = {
4172 /* OMAP_DSS_GFX */
4173 COLOR_ARRAY(
4174 DRM_FORMAT_RGBX4444, DRM_FORMAT_ARGB4444,
4175 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4176 DRM_FORMAT_RGB888, DRM_FORMAT_ARGB8888,
4177 DRM_FORMAT_RGBA8888, DRM_FORMAT_RGBX8888,
4178 DRM_FORMAT_ARGB1555, DRM_FORMAT_XRGB4444,
4179 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB1555),
4180
4181 /* OMAP_DSS_VIDEO1 */
4182 COLOR_ARRAY(
4183 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4184 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4185 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4186 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4187 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4188 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4189 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4190 DRM_FORMAT_RGBX8888),
4191
4192 /* OMAP_DSS_VIDEO2 */
4193 COLOR_ARRAY(
4194 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4195 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4196 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4197 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4198 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4199 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4200 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4201 DRM_FORMAT_RGBX8888),
4202
4203 /* OMAP_DSS_VIDEO3 */
4204 COLOR_ARRAY(
4205 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4206 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4207 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4208 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4209 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4210 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4211 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4212 DRM_FORMAT_RGBX8888),
4213
4214 /* OMAP_DSS_WB */
4215 COLOR_ARRAY(
4216 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4217 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4218 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4219 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4220 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4221 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4222 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4223 DRM_FORMAT_RGBX8888),
4224 };
4225
4226 static const u32 omap3_dispc_supported_scaler_color_modes[] = {
4227 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_YUYV,
4228 DRM_FORMAT_UYVY,
4229 0,
4230 };
4231
4232 static const struct dispc_features omap24xx_dispc_feats = {
4233 .sw_start = 5,
4234 .fp_start = 15,
4235 .bp_start = 27,
4236 .sw_max = 64,
4237 .vp_max = 255,
4238 .hp_max = 256,
4239 .mgr_width_start = 10,
4240 .mgr_height_start = 26,
4241 .mgr_width_max = 2048,
4242 .mgr_height_max = 2048,
4243 .max_lcd_pclk = 66500000,
4244 .max_downscale = 2,
4245 /*
4246 * Assume the line width buffer to be 768 pixels as OMAP2 DISPC scaler
4247 * cannot scale an image width larger than 768.
4248 */
4249 .max_line_width = 768,
4250 .min_pcd = 2,
4251 .calc_scaling = dispc_ovl_calc_scaling_24xx,
4252 .calc_core_clk = calc_core_clk_24xx,
4253 .num_fifos = 3,
4254 .features = omap2_dispc_features_list,
4255 .num_features = ARRAY_SIZE(omap2_dispc_features_list),
4256 .reg_fields = omap2_dispc_reg_fields,
4257 .num_reg_fields = ARRAY_SIZE(omap2_dispc_reg_fields),
4258 .overlay_caps = omap2_dispc_overlay_caps,
4259 .supported_color_modes = omap2_dispc_supported_color_modes,
4260 .supported_scaler_color_modes = COLOR_ARRAY(DRM_FORMAT_XRGB8888),
4261 .num_mgrs = 2,
4262 .num_ovls = 3,
4263 .buffer_size_unit = 1,
4264 .burst_size_unit = 8,
4265 .no_framedone_tv = true,
4266 .set_max_preload = false,
4267 .last_pixel_inc_missing = true,
4268 };
4269
4270 static const struct dispc_features omap34xx_rev1_0_dispc_feats = {
4271 .sw_start = 5,
4272 .fp_start = 15,
4273 .bp_start = 27,
4274 .sw_max = 64,
4275 .vp_max = 255,
4276 .hp_max = 256,
4277 .mgr_width_start = 10,
4278 .mgr_height_start = 26,
4279 .mgr_width_max = 2048,
4280 .mgr_height_max = 2048,
4281 .max_lcd_pclk = 173000000,
4282 .max_tv_pclk = 59000000,
4283 .max_downscale = 4,
4284 .max_line_width = 1024,
4285 .min_pcd = 1,
4286 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4287 .calc_core_clk = calc_core_clk_34xx,
4288 .num_fifos = 3,
4289 .features = omap3_dispc_features_list,
4290 .num_features = ARRAY_SIZE(omap3_dispc_features_list),
4291 .reg_fields = omap3_dispc_reg_fields,
4292 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4293 .overlay_caps = omap3430_dispc_overlay_caps,
4294 .supported_color_modes = omap3_dispc_supported_color_modes,
4295 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4296 .num_mgrs = 2,
4297 .num_ovls = 3,
4298 .buffer_size_unit = 1,
4299 .burst_size_unit = 8,
4300 .no_framedone_tv = true,
4301 .set_max_preload = false,
4302 .last_pixel_inc_missing = true,
4303 };
4304
4305 static const struct dispc_features omap34xx_rev3_0_dispc_feats = {
4306 .sw_start = 7,
4307 .fp_start = 19,
4308 .bp_start = 31,
4309 .sw_max = 256,
4310 .vp_max = 4095,
4311 .hp_max = 4096,
4312 .mgr_width_start = 10,
4313 .mgr_height_start = 26,
4314 .mgr_width_max = 2048,
4315 .mgr_height_max = 2048,
4316 .max_lcd_pclk = 173000000,
4317 .max_tv_pclk = 59000000,
4318 .max_downscale = 4,
4319 .max_line_width = 1024,
4320 .min_pcd = 1,
4321 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4322 .calc_core_clk = calc_core_clk_34xx,
4323 .num_fifos = 3,
4324 .features = omap3_dispc_features_list,
4325 .num_features = ARRAY_SIZE(omap3_dispc_features_list),
4326 .reg_fields = omap3_dispc_reg_fields,
4327 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4328 .overlay_caps = omap3430_dispc_overlay_caps,
4329 .supported_color_modes = omap3_dispc_supported_color_modes,
4330 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4331 .num_mgrs = 2,
4332 .num_ovls = 3,
4333 .buffer_size_unit = 1,
4334 .burst_size_unit = 8,
4335 .no_framedone_tv = true,
4336 .set_max_preload = false,
4337 .last_pixel_inc_missing = true,
4338 };
4339
4340 static const struct dispc_features omap36xx_dispc_feats = {
4341 .sw_start = 7,
4342 .fp_start = 19,
4343 .bp_start = 31,
4344 .sw_max = 256,
4345 .vp_max = 4095,
4346 .hp_max = 4096,
4347 .mgr_width_start = 10,
4348 .mgr_height_start = 26,
4349 .mgr_width_max = 2048,
4350 .mgr_height_max = 2048,
4351 .max_lcd_pclk = 173000000,
4352 .max_tv_pclk = 59000000,
4353 .max_downscale = 4,
4354 .max_line_width = 1024,
4355 .min_pcd = 1,
4356 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4357 .calc_core_clk = calc_core_clk_34xx,
4358 .num_fifos = 3,
4359 .features = omap3_dispc_features_list,
4360 .num_features = ARRAY_SIZE(omap3_dispc_features_list),
4361 .reg_fields = omap3_dispc_reg_fields,
4362 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4363 .overlay_caps = omap3630_dispc_overlay_caps,
4364 .supported_color_modes = omap3_dispc_supported_color_modes,
4365 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4366 .num_mgrs = 2,
4367 .num_ovls = 3,
4368 .buffer_size_unit = 1,
4369 .burst_size_unit = 8,
4370 .no_framedone_tv = true,
4371 .set_max_preload = false,
4372 .last_pixel_inc_missing = true,
4373 };
4374
4375 static const struct dispc_features am43xx_dispc_feats = {
4376 .sw_start = 7,
4377 .fp_start = 19,
4378 .bp_start = 31,
4379 .sw_max = 256,
4380 .vp_max = 4095,
4381 .hp_max = 4096,
4382 .mgr_width_start = 10,
4383 .mgr_height_start = 26,
4384 .mgr_width_max = 2048,
4385 .mgr_height_max = 2048,
4386 .max_lcd_pclk = 173000000,
4387 .max_tv_pclk = 59000000,
4388 .max_downscale = 4,
4389 .max_line_width = 1024,
4390 .min_pcd = 1,
4391 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4392 .calc_core_clk = calc_core_clk_34xx,
4393 .num_fifos = 3,
4394 .features = am43xx_dispc_features_list,
4395 .num_features = ARRAY_SIZE(am43xx_dispc_features_list),
4396 .reg_fields = omap3_dispc_reg_fields,
4397 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4398 .overlay_caps = omap3430_dispc_overlay_caps,
4399 .supported_color_modes = omap3_dispc_supported_color_modes,
4400 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4401 .num_mgrs = 1,
4402 .num_ovls = 3,
4403 .buffer_size_unit = 1,
4404 .burst_size_unit = 8,
4405 .no_framedone_tv = true,
4406 .set_max_preload = false,
4407 .last_pixel_inc_missing = true,
4408 };
4409
4410 static const struct dispc_features omap44xx_dispc_feats = {
4411 .sw_start = 7,
4412 .fp_start = 19,
4413 .bp_start = 31,
4414 .sw_max = 256,
4415 .vp_max = 4095,
4416 .hp_max = 4096,
4417 .mgr_width_start = 10,
4418 .mgr_height_start = 26,
4419 .mgr_width_max = 2048,
4420 .mgr_height_max = 2048,
4421 .max_lcd_pclk = 170000000,
4422 .max_tv_pclk = 185625000,
4423 .max_downscale = 4,
4424 .max_line_width = 2048,
4425 .min_pcd = 1,
4426 .calc_scaling = dispc_ovl_calc_scaling_44xx,
4427 .calc_core_clk = calc_core_clk_44xx,
4428 .num_fifos = 5,
4429 .features = omap4_dispc_features_list,
4430 .num_features = ARRAY_SIZE(omap4_dispc_features_list),
4431 .reg_fields = omap4_dispc_reg_fields,
4432 .num_reg_fields = ARRAY_SIZE(omap4_dispc_reg_fields),
4433 .overlay_caps = omap4_dispc_overlay_caps,
4434 .supported_color_modes = omap4_dispc_supported_color_modes,
4435 .num_mgrs = 3,
4436 .num_ovls = 4,
4437 .buffer_size_unit = 16,
4438 .burst_size_unit = 16,
4439 .gfx_fifo_workaround = true,
4440 .set_max_preload = true,
4441 .supports_sync_align = true,
4442 .has_writeback = true,
4443 .supports_double_pixel = true,
4444 .reverse_ilace_field_order = true,
4445 .has_gamma_table = true,
4446 .has_gamma_i734_bug = true,
4447 };
4448
4449 static const struct dispc_features omap54xx_dispc_feats = {
4450 .sw_start = 7,
4451 .fp_start = 19,
4452 .bp_start = 31,
4453 .sw_max = 256,
4454 .vp_max = 4095,
4455 .hp_max = 4096,
4456 .mgr_width_start = 11,
4457 .mgr_height_start = 27,
4458 .mgr_width_max = 4096,
4459 .mgr_height_max = 4096,
4460 .max_lcd_pclk = 170000000,
4461 .max_tv_pclk = 186000000,
4462 .max_downscale = 4,
4463 .max_line_width = 2048,
4464 .min_pcd = 1,
4465 .calc_scaling = dispc_ovl_calc_scaling_44xx,
4466 .calc_core_clk = calc_core_clk_44xx,
4467 .num_fifos = 5,
4468 .features = omap5_dispc_features_list,
4469 .num_features = ARRAY_SIZE(omap5_dispc_features_list),
4470 .reg_fields = omap4_dispc_reg_fields,
4471 .num_reg_fields = ARRAY_SIZE(omap4_dispc_reg_fields),
4472 .overlay_caps = omap4_dispc_overlay_caps,
4473 .supported_color_modes = omap4_dispc_supported_color_modes,
4474 .num_mgrs = 4,
4475 .num_ovls = 4,
4476 .buffer_size_unit = 16,
4477 .burst_size_unit = 16,
4478 .gfx_fifo_workaround = true,
4479 .mstandby_workaround = true,
4480 .set_max_preload = true,
4481 .supports_sync_align = true,
4482 .has_writeback = true,
4483 .supports_double_pixel = true,
4484 .reverse_ilace_field_order = true,
4485 .has_gamma_table = true,
4486 .has_gamma_i734_bug = true,
4487 };
4488
dispc_irq_handler(int irq,void * arg)4489 static irqreturn_t dispc_irq_handler(int irq, void *arg)
4490 {
4491 struct dispc_device *dispc = arg;
4492
4493 if (!dispc->is_enabled)
4494 return IRQ_NONE;
4495
4496 return dispc->user_handler(irq, dispc->user_data);
4497 }
4498
dispc_request_irq(struct dispc_device * dispc,irq_handler_t handler,void * dev_id)4499 int dispc_request_irq(struct dispc_device *dispc, irq_handler_t handler,
4500 void *dev_id)
4501 {
4502 int r;
4503
4504 if (dispc->user_handler != NULL)
4505 return -EBUSY;
4506
4507 dispc->user_handler = handler;
4508 dispc->user_data = dev_id;
4509
4510 /* ensure the dispc_irq_handler sees the values above */
4511 smp_wmb();
4512
4513 r = devm_request_irq(&dispc->pdev->dev, dispc->irq, dispc_irq_handler,
4514 IRQF_SHARED, "OMAP DISPC", dispc);
4515 if (r) {
4516 dispc->user_handler = NULL;
4517 dispc->user_data = NULL;
4518 }
4519
4520 return r;
4521 }
4522
dispc_free_irq(struct dispc_device * dispc,void * dev_id)4523 void dispc_free_irq(struct dispc_device *dispc, void *dev_id)
4524 {
4525 devm_free_irq(&dispc->pdev->dev, dispc->irq, dispc);
4526
4527 dispc->user_handler = NULL;
4528 dispc->user_data = NULL;
4529 }
4530
dispc_get_memory_bandwidth_limit(struct dispc_device * dispc)4531 u32 dispc_get_memory_bandwidth_limit(struct dispc_device *dispc)
4532 {
4533 u32 limit = 0;
4534
4535 /* Optional maximum memory bandwidth */
4536 of_property_read_u32(dispc->pdev->dev.of_node, "max-memory-bandwidth",
4537 &limit);
4538
4539 return limit;
4540 }
4541
4542 /*
4543 * Workaround for errata i734 in DSS dispc
4544 * - LCD1 Gamma Correction Is Not Working When GFX Pipe Is Disabled
4545 *
4546 * For gamma tables to work on LCD1 the GFX plane has to be used at
4547 * least once after DSS HW has come out of reset. The workaround
4548 * sets up a minimal LCD setup with GFX plane and waits for one
4549 * vertical sync irq before disabling the setup and continuing with
4550 * the context restore. The physical outputs are gated during the
4551 * operation. This workaround requires that gamma table's LOADMODE
4552 * is set to 0x2 in DISPC_CONTROL1 register.
4553 *
4554 * For details see:
4555 * OMAP543x Multimedia Device Silicon Revision 2.0 Silicon Errata
4556 * Literature Number: SWPZ037E
4557 * Or some other relevant errata document for the DSS IP version.
4558 */
4559
4560 static const struct dispc_errata_i734_data {
4561 struct videomode vm;
4562 struct omap_overlay_info ovli;
4563 struct omap_overlay_manager_info mgri;
4564 struct dss_lcd_mgr_config lcd_conf;
4565 } i734 = {
4566 .vm = {
4567 .hactive = 8, .vactive = 1,
4568 .pixelclock = 16000000,
4569 .hsync_len = 8, .hfront_porch = 4, .hback_porch = 4,
4570 .vsync_len = 1, .vfront_porch = 1, .vback_porch = 1,
4571
4572 .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
4573 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
4574 DISPLAY_FLAGS_PIXDATA_POSEDGE,
4575 },
4576 .ovli = {
4577 .screen_width = 1,
4578 .width = 1, .height = 1,
4579 .fourcc = DRM_FORMAT_XRGB8888,
4580 .rotation = DRM_MODE_ROTATE_0,
4581 .rotation_type = OMAP_DSS_ROT_NONE,
4582 .pos_x = 0, .pos_y = 0,
4583 .out_width = 0, .out_height = 0,
4584 .global_alpha = 0xff,
4585 .pre_mult_alpha = 0,
4586 .zorder = 0,
4587 },
4588 .mgri = {
4589 .default_color = 0,
4590 .trans_enabled = false,
4591 .partial_alpha_enabled = false,
4592 .cpr_enable = false,
4593 },
4594 .lcd_conf = {
4595 .io_pad_mode = DSS_IO_PAD_MODE_BYPASS,
4596 .stallmode = false,
4597 .fifohandcheck = false,
4598 .clock_info = {
4599 .lck_div = 1,
4600 .pck_div = 2,
4601 },
4602 .video_port_width = 24,
4603 .lcden_sig_polarity = 0,
4604 },
4605 };
4606
4607 static struct i734_buf {
4608 size_t size;
4609 dma_addr_t paddr;
4610 void *vaddr;
4611 } i734_buf;
4612
dispc_errata_i734_wa_init(struct dispc_device * dispc)4613 static int dispc_errata_i734_wa_init(struct dispc_device *dispc)
4614 {
4615 if (!dispc->feat->has_gamma_i734_bug)
4616 return 0;
4617
4618 i734_buf.size = i734.ovli.width * i734.ovli.height *
4619 color_mode_to_bpp(i734.ovli.fourcc) / 8;
4620
4621 i734_buf.vaddr = dma_alloc_wc(&dispc->pdev->dev, i734_buf.size,
4622 &i734_buf.paddr, GFP_KERNEL);
4623 if (!i734_buf.vaddr) {
4624 dev_err(&dispc->pdev->dev, "%s: dma_alloc_wc failed\n",
4625 __func__);
4626 return -ENOMEM;
4627 }
4628
4629 return 0;
4630 }
4631
dispc_errata_i734_wa_fini(struct dispc_device * dispc)4632 static void dispc_errata_i734_wa_fini(struct dispc_device *dispc)
4633 {
4634 if (!dispc->feat->has_gamma_i734_bug)
4635 return;
4636
4637 dma_free_wc(&dispc->pdev->dev, i734_buf.size, i734_buf.vaddr,
4638 i734_buf.paddr);
4639 }
4640
dispc_errata_i734_wa(struct dispc_device * dispc)4641 static void dispc_errata_i734_wa(struct dispc_device *dispc)
4642 {
4643 u32 framedone_irq = dispc_mgr_get_framedone_irq(dispc,
4644 OMAP_DSS_CHANNEL_LCD);
4645 struct omap_overlay_info ovli;
4646 struct dss_lcd_mgr_config lcd_conf;
4647 u32 gatestate;
4648 unsigned int count;
4649
4650 if (!dispc->feat->has_gamma_i734_bug)
4651 return;
4652
4653 gatestate = REG_GET(dispc, DISPC_CONFIG, 8, 4);
4654
4655 ovli = i734.ovli;
4656 ovli.paddr = i734_buf.paddr;
4657 lcd_conf = i734.lcd_conf;
4658
4659 /* Gate all LCD1 outputs */
4660 REG_FLD_MOD(dispc, DISPC_CONFIG, 0x1f, 8, 4);
4661
4662 /* Setup and enable GFX plane */
4663 dispc_ovl_setup(dispc, OMAP_DSS_GFX, &ovli, &i734.vm, false,
4664 OMAP_DSS_CHANNEL_LCD);
4665 dispc_ovl_enable(dispc, OMAP_DSS_GFX, true);
4666
4667 /* Set up and enable display manager for LCD1 */
4668 dispc_mgr_setup(dispc, OMAP_DSS_CHANNEL_LCD, &i734.mgri);
4669 dispc_calc_clock_rates(dispc, dss_get_dispc_clk_rate(dispc->dss),
4670 &lcd_conf.clock_info);
4671 dispc_mgr_set_lcd_config(dispc, OMAP_DSS_CHANNEL_LCD, &lcd_conf);
4672 dispc_mgr_set_timings(dispc, OMAP_DSS_CHANNEL_LCD, &i734.vm);
4673
4674 dispc_clear_irqstatus(dispc, framedone_irq);
4675
4676 /* Enable and shut the channel to produce just one frame */
4677 dispc_mgr_enable(dispc, OMAP_DSS_CHANNEL_LCD, true);
4678 dispc_mgr_enable(dispc, OMAP_DSS_CHANNEL_LCD, false);
4679
4680 /* Busy wait for framedone. We can't fiddle with irq handlers
4681 * in PM resume. Typically the loop runs less than 5 times and
4682 * waits less than a micro second.
4683 */
4684 count = 0;
4685 while (!(dispc_read_irqstatus(dispc) & framedone_irq)) {
4686 if (count++ > 10000) {
4687 dev_err(&dispc->pdev->dev, "%s: framedone timeout\n",
4688 __func__);
4689 break;
4690 }
4691 }
4692 dispc_ovl_enable(dispc, OMAP_DSS_GFX, false);
4693
4694 /* Clear all irq bits before continuing */
4695 dispc_clear_irqstatus(dispc, 0xffffffff);
4696
4697 /* Restore the original state to LCD1 output gates */
4698 REG_FLD_MOD(dispc, DISPC_CONFIG, gatestate, 8, 4);
4699 }
4700
4701 /* DISPC HW IP initialisation */
4702 static const struct of_device_id dispc_of_match[] = {
4703 { .compatible = "ti,omap2-dispc", .data = &omap24xx_dispc_feats },
4704 { .compatible = "ti,omap3-dispc", .data = &omap36xx_dispc_feats },
4705 { .compatible = "ti,omap4-dispc", .data = &omap44xx_dispc_feats },
4706 { .compatible = "ti,omap5-dispc", .data = &omap54xx_dispc_feats },
4707 { .compatible = "ti,dra7-dispc", .data = &omap54xx_dispc_feats },
4708 {},
4709 };
4710
4711 static const struct soc_device_attribute dispc_soc_devices[] = {
4712 { .machine = "OMAP3[45]*",
4713 .revision = "ES[12].?", .data = &omap34xx_rev1_0_dispc_feats },
4714 { .machine = "OMAP3[45]*", .data = &omap34xx_rev3_0_dispc_feats },
4715 { .machine = "AM35*", .data = &omap34xx_rev3_0_dispc_feats },
4716 { .machine = "AM43*", .data = &am43xx_dispc_feats },
4717 { /* sentinel */ }
4718 };
4719
dispc_bind(struct device * dev,struct device * master,void * data)4720 static int dispc_bind(struct device *dev, struct device *master, void *data)
4721 {
4722 struct platform_device *pdev = to_platform_device(dev);
4723 const struct soc_device_attribute *soc;
4724 struct dss_device *dss = dss_get_device(master);
4725 struct dispc_device *dispc;
4726 u32 rev;
4727 int r = 0;
4728 struct resource *dispc_mem;
4729 struct device_node *np = pdev->dev.of_node;
4730
4731 dispc = kzalloc(sizeof(*dispc), GFP_KERNEL);
4732 if (!dispc)
4733 return -ENOMEM;
4734
4735 dispc->pdev = pdev;
4736 platform_set_drvdata(pdev, dispc);
4737 dispc->dss = dss;
4738
4739 /*
4740 * The OMAP3-based models can't be told apart using the compatible
4741 * string, use SoC device matching.
4742 */
4743 soc = soc_device_match(dispc_soc_devices);
4744 if (soc)
4745 dispc->feat = soc->data;
4746 else
4747 dispc->feat = of_match_device(dispc_of_match, &pdev->dev)->data;
4748
4749 r = dispc_errata_i734_wa_init(dispc);
4750 if (r)
4751 goto err_free;
4752
4753 dispc_mem = platform_get_resource(dispc->pdev, IORESOURCE_MEM, 0);
4754 dispc->base = devm_ioremap_resource(&pdev->dev, dispc_mem);
4755 if (IS_ERR(dispc->base)) {
4756 r = PTR_ERR(dispc->base);
4757 goto err_free;
4758 }
4759
4760 dispc->irq = platform_get_irq(dispc->pdev, 0);
4761 if (dispc->irq < 0) {
4762 DSSERR("platform_get_irq failed\n");
4763 r = -ENODEV;
4764 goto err_free;
4765 }
4766
4767 if (np && of_property_read_bool(np, "syscon-pol")) {
4768 dispc->syscon_pol = syscon_regmap_lookup_by_phandle(np, "syscon-pol");
4769 if (IS_ERR(dispc->syscon_pol)) {
4770 dev_err(&pdev->dev, "failed to get syscon-pol regmap\n");
4771 r = PTR_ERR(dispc->syscon_pol);
4772 goto err_free;
4773 }
4774
4775 if (of_property_read_u32_index(np, "syscon-pol", 1,
4776 &dispc->syscon_pol_offset)) {
4777 dev_err(&pdev->dev, "failed to get syscon-pol offset\n");
4778 r = -EINVAL;
4779 goto err_free;
4780 }
4781 }
4782
4783 r = dispc_init_gamma_tables(dispc);
4784 if (r)
4785 goto err_free;
4786
4787 pm_runtime_enable(&pdev->dev);
4788
4789 r = dispc_runtime_get(dispc);
4790 if (r)
4791 goto err_runtime_get;
4792
4793 _omap_dispc_initial_config(dispc);
4794
4795 rev = dispc_read_reg(dispc, DISPC_REVISION);
4796 dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
4797 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
4798
4799 dispc_runtime_put(dispc);
4800
4801 dss->dispc = dispc;
4802
4803 dispc->debugfs = dss_debugfs_create_file(dss, "dispc", dispc_dump_regs,
4804 dispc);
4805
4806 return 0;
4807
4808 err_runtime_get:
4809 pm_runtime_disable(&pdev->dev);
4810 err_free:
4811 kfree(dispc);
4812 return r;
4813 }
4814
dispc_unbind(struct device * dev,struct device * master,void * data)4815 static void dispc_unbind(struct device *dev, struct device *master, void *data)
4816 {
4817 struct dispc_device *dispc = dev_get_drvdata(dev);
4818 struct dss_device *dss = dispc->dss;
4819
4820 dss_debugfs_remove_file(dispc->debugfs);
4821
4822 dss->dispc = NULL;
4823
4824 pm_runtime_disable(dev);
4825
4826 dispc_errata_i734_wa_fini(dispc);
4827
4828 kfree(dispc);
4829 }
4830
4831 static const struct component_ops dispc_component_ops = {
4832 .bind = dispc_bind,
4833 .unbind = dispc_unbind,
4834 };
4835
dispc_probe(struct platform_device * pdev)4836 static int dispc_probe(struct platform_device *pdev)
4837 {
4838 return component_add(&pdev->dev, &dispc_component_ops);
4839 }
4840
dispc_remove(struct platform_device * pdev)4841 static int dispc_remove(struct platform_device *pdev)
4842 {
4843 component_del(&pdev->dev, &dispc_component_ops);
4844 return 0;
4845 }
4846
dispc_runtime_suspend(struct device * dev)4847 static int dispc_runtime_suspend(struct device *dev)
4848 {
4849 struct dispc_device *dispc = dev_get_drvdata(dev);
4850
4851 dispc->is_enabled = false;
4852 /* ensure the dispc_irq_handler sees the is_enabled value */
4853 smp_wmb();
4854 /* wait for current handler to finish before turning the DISPC off */
4855 synchronize_irq(dispc->irq);
4856
4857 dispc_save_context(dispc);
4858
4859 return 0;
4860 }
4861
dispc_runtime_resume(struct device * dev)4862 static int dispc_runtime_resume(struct device *dev)
4863 {
4864 struct dispc_device *dispc = dev_get_drvdata(dev);
4865
4866 /*
4867 * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME)
4868 * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in
4869 * _omap_dispc_initial_config(). We can thus use it to detect if
4870 * we have lost register context.
4871 */
4872 if (REG_GET(dispc, DISPC_CONFIG, 2, 1) != OMAP_DSS_LOAD_FRAME_ONLY) {
4873 _omap_dispc_initial_config(dispc);
4874
4875 dispc_errata_i734_wa(dispc);
4876
4877 dispc_restore_context(dispc);
4878
4879 dispc_restore_gamma_tables(dispc);
4880 }
4881
4882 dispc->is_enabled = true;
4883 /* ensure the dispc_irq_handler sees the is_enabled value */
4884 smp_wmb();
4885
4886 return 0;
4887 }
4888
4889 static const struct dev_pm_ops dispc_pm_ops = {
4890 .runtime_suspend = dispc_runtime_suspend,
4891 .runtime_resume = dispc_runtime_resume,
4892 SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
4893 };
4894
4895 struct platform_driver omap_dispchw_driver = {
4896 .probe = dispc_probe,
4897 .remove = dispc_remove,
4898 .driver = {
4899 .name = "omapdss_dispc",
4900 .pm = &dispc_pm_ops,
4901 .of_match_table = dispc_of_match,
4902 .suppress_bind_attrs = true,
4903 },
4904 };
4905