1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * drivers/media/i2c/ccs/ccs-core.c
4 *
5 * Generic driver for MIPI CCS/SMIA/SMIA++ compliant camera sensors
6 *
7 * Copyright (C) 2020 Intel Corporation
8 * Copyright (C) 2010--2012 Nokia Corporation
9 * Contact: Sakari Ailus <sakari.ailus@linux.intel.com>
10 *
11 * Based on smiapp driver by Vimarsh Zutshi
12 * Based on jt8ev1.c by Vimarsh Zutshi
13 * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
14 */
15
16 #include <linux/clk.h>
17 #include <linux/delay.h>
18 #include <linux/device.h>
19 #include <linux/firmware.h>
20 #include <linux/gpio.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/module.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/property.h>
25 #include <linux/regulator/consumer.h>
26 #include <linux/slab.h>
27 #include <linux/smiapp.h>
28 #include <linux/v4l2-mediabus.h>
29 #include <media/v4l2-fwnode.h>
30 #include <media/v4l2-device.h>
31 #include <uapi/linux/ccs.h>
32
33 #include "ccs.h"
34
35 #define CCS_ALIGN_DIM(dim, flags) \
36 ((flags) & V4L2_SEL_FLAG_GE \
37 ? ALIGN((dim), 2) \
38 : (dim) & ~1)
39
40 static struct ccs_limit_offset {
41 u16 lim;
42 u16 info;
43 } ccs_limit_offsets[CCS_L_LAST + 1];
44
45 /*
46 * ccs_module_idents - supported camera modules
47 */
48 static const struct ccs_module_ident ccs_module_idents[] = {
49 CCS_IDENT_L(0x01, 0x022b, -1, "vs6555"),
50 CCS_IDENT_L(0x01, 0x022e, -1, "vw6558"),
51 CCS_IDENT_L(0x07, 0x7698, -1, "ovm7698"),
52 CCS_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"),
53 CCS_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"),
54 CCS_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk),
55 CCS_IDENT_L(0x0c, 0x213e, -1, "et8en2"),
56 CCS_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"),
57 CCS_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk),
58 CCS_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk),
59 CCS_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk),
60 };
61
62 #define CCS_DEVICE_FLAG_IS_SMIA BIT(0)
63
64 struct ccs_device {
65 unsigned char flags;
66 };
67
68 static const char * const ccs_regulators[] = { "vcore", "vio", "vana" };
69
70 /*
71 *
72 * Dynamic Capability Identification
73 *
74 */
75
ccs_assign_limit(void * ptr,unsigned int width,u32 val)76 static void ccs_assign_limit(void *ptr, unsigned int width, u32 val)
77 {
78 switch (width) {
79 case sizeof(u8):
80 *(u8 *)ptr = val;
81 break;
82 case sizeof(u16):
83 *(u16 *)ptr = val;
84 break;
85 case sizeof(u32):
86 *(u32 *)ptr = val;
87 break;
88 }
89 }
90
ccs_limit_ptr(struct ccs_sensor * sensor,unsigned int limit,unsigned int offset,void ** __ptr)91 static int ccs_limit_ptr(struct ccs_sensor *sensor, unsigned int limit,
92 unsigned int offset, void **__ptr)
93 {
94 const struct ccs_limit *linfo;
95
96 if (WARN_ON(limit >= CCS_L_LAST))
97 return -EINVAL;
98
99 linfo = &ccs_limits[ccs_limit_offsets[limit].info];
100
101 if (WARN_ON(!sensor->ccs_limits) ||
102 WARN_ON(offset + ccs_reg_width(linfo->reg) >
103 ccs_limit_offsets[limit + 1].lim))
104 return -EINVAL;
105
106 *__ptr = sensor->ccs_limits + ccs_limit_offsets[limit].lim + offset;
107
108 return 0;
109 }
110
ccs_replace_limit(struct ccs_sensor * sensor,unsigned int limit,unsigned int offset,u32 val)111 void ccs_replace_limit(struct ccs_sensor *sensor,
112 unsigned int limit, unsigned int offset, u32 val)
113 {
114 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
115 const struct ccs_limit *linfo;
116 void *ptr;
117 int ret;
118
119 ret = ccs_limit_ptr(sensor, limit, offset, &ptr);
120 if (ret)
121 return;
122
123 linfo = &ccs_limits[ccs_limit_offsets[limit].info];
124
125 dev_dbg(&client->dev, "quirk: 0x%8.8x \"%s\" %u = %d, 0x%x\n",
126 linfo->reg, linfo->name, offset, val, val);
127
128 ccs_assign_limit(ptr, ccs_reg_width(linfo->reg), val);
129 }
130
ccs_get_limit(struct ccs_sensor * sensor,unsigned int limit,unsigned int offset)131 u32 ccs_get_limit(struct ccs_sensor *sensor, unsigned int limit,
132 unsigned int offset)
133 {
134 void *ptr;
135 u32 val;
136 int ret;
137
138 ret = ccs_limit_ptr(sensor, limit, offset, &ptr);
139 if (ret)
140 return 0;
141
142 switch (ccs_reg_width(ccs_limits[ccs_limit_offsets[limit].info].reg)) {
143 case sizeof(u8):
144 val = *(u8 *)ptr;
145 break;
146 case sizeof(u16):
147 val = *(u16 *)ptr;
148 break;
149 case sizeof(u32):
150 val = *(u32 *)ptr;
151 break;
152 default:
153 WARN_ON(1);
154 return 0;
155 }
156
157 return ccs_reg_conv(sensor, ccs_limits[limit].reg, val);
158 }
159
ccs_read_all_limits(struct ccs_sensor * sensor)160 static int ccs_read_all_limits(struct ccs_sensor *sensor)
161 {
162 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
163 void *ptr, *alloc, *end;
164 unsigned int i, l;
165 int ret;
166
167 kfree(sensor->ccs_limits);
168 sensor->ccs_limits = NULL;
169
170 alloc = kzalloc(ccs_limit_offsets[CCS_L_LAST].lim, GFP_KERNEL);
171 if (!alloc)
172 return -ENOMEM;
173
174 end = alloc + ccs_limit_offsets[CCS_L_LAST].lim;
175
176 for (i = 0, l = 0, ptr = alloc; ccs_limits[i].size; i++) {
177 u32 reg = ccs_limits[i].reg;
178 unsigned int width = ccs_reg_width(reg);
179 unsigned int j;
180
181 if (l == CCS_L_LAST) {
182 dev_err(&client->dev,
183 "internal error --- end of limit array\n");
184 ret = -EINVAL;
185 goto out_err;
186 }
187
188 for (j = 0; j < ccs_limits[i].size / width;
189 j++, reg += width, ptr += width) {
190 u32 val;
191
192 ret = ccs_read_addr_noconv(sensor, reg, &val);
193 if (ret)
194 goto out_err;
195
196 if (ptr + width > end) {
197 dev_err(&client->dev,
198 "internal error --- no room for regs\n");
199 ret = -EINVAL;
200 goto out_err;
201 }
202
203 if (!val && j)
204 break;
205
206 ccs_assign_limit(ptr, width, val);
207
208 dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n",
209 reg, ccs_limits[i].name, val, val);
210 }
211
212 if (ccs_limits[i].flags & CCS_L_FL_SAME_REG)
213 continue;
214
215 l++;
216 ptr = alloc + ccs_limit_offsets[l].lim;
217 }
218
219 if (l != CCS_L_LAST) {
220 dev_err(&client->dev,
221 "internal error --- insufficient limits\n");
222 ret = -EINVAL;
223 goto out_err;
224 }
225
226 sensor->ccs_limits = alloc;
227
228 if (CCS_LIM(sensor, SCALER_N_MIN) < 16)
229 ccs_replace_limit(sensor, CCS_L_SCALER_N_MIN, 0, 16);
230
231 return 0;
232
233 out_err:
234 kfree(alloc);
235
236 return ret;
237 }
238
ccs_read_frame_fmt(struct ccs_sensor * sensor)239 static int ccs_read_frame_fmt(struct ccs_sensor *sensor)
240 {
241 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
242 u8 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
243 unsigned int i;
244 int pixel_count = 0;
245 int line_count = 0;
246
247 fmt_model_type = CCS_LIM(sensor, FRAME_FORMAT_MODEL_TYPE);
248 fmt_model_subtype = CCS_LIM(sensor, FRAME_FORMAT_MODEL_SUBTYPE);
249
250 ncol_desc = (fmt_model_subtype
251 & CCS_FRAME_FORMAT_MODEL_SUBTYPE_COLUMNS_MASK)
252 >> CCS_FRAME_FORMAT_MODEL_SUBTYPE_COLUMNS_SHIFT;
253 nrow_desc = fmt_model_subtype
254 & CCS_FRAME_FORMAT_MODEL_SUBTYPE_ROWS_MASK;
255
256 dev_dbg(&client->dev, "format_model_type %s\n",
257 fmt_model_type == CCS_FRAME_FORMAT_MODEL_TYPE_2_BYTE
258 ? "2 byte" :
259 fmt_model_type == CCS_FRAME_FORMAT_MODEL_TYPE_4_BYTE
260 ? "4 byte" : "is simply bad");
261
262 dev_dbg(&client->dev, "%u column and %u row descriptors\n",
263 ncol_desc, nrow_desc);
264
265 for (i = 0; i < ncol_desc + nrow_desc; i++) {
266 u32 desc;
267 u32 pixelcode;
268 u32 pixels;
269 char *which;
270 char *what;
271
272 if (fmt_model_type == CCS_FRAME_FORMAT_MODEL_TYPE_2_BYTE) {
273 desc = CCS_LIM_AT(sensor, FRAME_FORMAT_DESCRIPTOR, i);
274
275 pixelcode =
276 (desc
277 & CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_MASK)
278 >> CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_SHIFT;
279 pixels = desc & CCS_FRAME_FORMAT_DESCRIPTOR_PIXELS_MASK;
280 } else if (fmt_model_type
281 == CCS_FRAME_FORMAT_MODEL_TYPE_4_BYTE) {
282 desc = CCS_LIM_AT(sensor, FRAME_FORMAT_DESCRIPTOR_4, i);
283
284 pixelcode =
285 (desc
286 & CCS_FRAME_FORMAT_DESCRIPTOR_4_PCODE_MASK)
287 >> CCS_FRAME_FORMAT_DESCRIPTOR_4_PCODE_SHIFT;
288 pixels = desc &
289 CCS_FRAME_FORMAT_DESCRIPTOR_4_PIXELS_MASK;
290 } else {
291 dev_dbg(&client->dev,
292 "invalid frame format model type %d\n",
293 fmt_model_type);
294 return -EINVAL;
295 }
296
297 if (i < ncol_desc)
298 which = "columns";
299 else
300 which = "rows";
301
302 switch (pixelcode) {
303 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_EMBEDDED:
304 what = "embedded";
305 break;
306 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_DUMMY_PIXEL:
307 what = "dummy";
308 break;
309 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_BLACK_PIXEL:
310 what = "black";
311 break;
312 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_DARK_PIXEL:
313 what = "dark";
314 break;
315 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_VISIBLE_PIXEL:
316 what = "visible";
317 break;
318 default:
319 what = "invalid";
320 break;
321 }
322
323 dev_dbg(&client->dev,
324 "%s pixels: %d %s (pixelcode %u)\n",
325 what, pixels, which, pixelcode);
326
327 if (i < ncol_desc) {
328 if (pixelcode ==
329 CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_VISIBLE_PIXEL)
330 sensor->visible_pixel_start = pixel_count;
331 pixel_count += pixels;
332 continue;
333 }
334
335 /* Handle row descriptors */
336 switch (pixelcode) {
337 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_EMBEDDED:
338 if (sensor->embedded_end)
339 break;
340 sensor->embedded_start = line_count;
341 sensor->embedded_end = line_count + pixels;
342 break;
343 case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_VISIBLE_PIXEL:
344 sensor->image_start = line_count;
345 break;
346 }
347 line_count += pixels;
348 }
349
350 if (sensor->embedded_end > sensor->image_start) {
351 dev_dbg(&client->dev,
352 "adjusting image start line to %u (was %u)\n",
353 sensor->embedded_end, sensor->image_start);
354 sensor->image_start = sensor->embedded_end;
355 }
356
357 dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
358 sensor->embedded_start, sensor->embedded_end);
359 dev_dbg(&client->dev, "image data starts at line %d\n",
360 sensor->image_start);
361
362 return 0;
363 }
364
ccs_pll_configure(struct ccs_sensor * sensor)365 static int ccs_pll_configure(struct ccs_sensor *sensor)
366 {
367 struct ccs_pll *pll = &sensor->pll;
368 int rval;
369
370 rval = ccs_write(sensor, VT_PIX_CLK_DIV, pll->vt_bk.pix_clk_div);
371 if (rval < 0)
372 return rval;
373
374 rval = ccs_write(sensor, VT_SYS_CLK_DIV, pll->vt_bk.sys_clk_div);
375 if (rval < 0)
376 return rval;
377
378 rval = ccs_write(sensor, PRE_PLL_CLK_DIV, pll->vt_fr.pre_pll_clk_div);
379 if (rval < 0)
380 return rval;
381
382 rval = ccs_write(sensor, PLL_MULTIPLIER, pll->vt_fr.pll_multiplier);
383 if (rval < 0)
384 return rval;
385
386 if (!(CCS_LIM(sensor, PHY_CTRL_CAPABILITY) &
387 CCS_PHY_CTRL_CAPABILITY_AUTO_PHY_CTL)) {
388 /* Lane op clock ratio does not apply here. */
389 rval = ccs_write(sensor, REQUESTED_LINK_RATE,
390 DIV_ROUND_UP(pll->op_bk.sys_clk_freq_hz,
391 1000000 / 256 / 256) *
392 (pll->flags & CCS_PLL_FLAG_LANE_SPEED_MODEL ?
393 sensor->pll.csi2.lanes : 1) <<
394 (pll->flags & CCS_PLL_FLAG_OP_SYS_DDR ?
395 1 : 0));
396 if (rval < 0)
397 return rval;
398 }
399
400 if (sensor->pll.flags & CCS_PLL_FLAG_NO_OP_CLOCKS)
401 return 0;
402
403 rval = ccs_write(sensor, OP_PIX_CLK_DIV, pll->op_bk.pix_clk_div);
404 if (rval < 0)
405 return rval;
406
407 rval = ccs_write(sensor, OP_SYS_CLK_DIV, pll->op_bk.sys_clk_div);
408 if (rval < 0)
409 return rval;
410
411 if (!(pll->flags & CCS_PLL_FLAG_DUAL_PLL))
412 return 0;
413
414 rval = ccs_write(sensor, PLL_MODE, CCS_PLL_MODE_DUAL);
415 if (rval < 0)
416 return rval;
417
418 rval = ccs_write(sensor, OP_PRE_PLL_CLK_DIV,
419 pll->op_fr.pre_pll_clk_div);
420 if (rval < 0)
421 return rval;
422
423 return ccs_write(sensor, OP_PLL_MULTIPLIER, pll->op_fr.pll_multiplier);
424 }
425
ccs_pll_try(struct ccs_sensor * sensor,struct ccs_pll * pll)426 static int ccs_pll_try(struct ccs_sensor *sensor, struct ccs_pll *pll)
427 {
428 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
429 struct ccs_pll_limits lim = {
430 .vt_fr = {
431 .min_pre_pll_clk_div = CCS_LIM(sensor, MIN_PRE_PLL_CLK_DIV),
432 .max_pre_pll_clk_div = CCS_LIM(sensor, MAX_PRE_PLL_CLK_DIV),
433 .min_pll_ip_clk_freq_hz = CCS_LIM(sensor, MIN_PLL_IP_CLK_FREQ_MHZ),
434 .max_pll_ip_clk_freq_hz = CCS_LIM(sensor, MAX_PLL_IP_CLK_FREQ_MHZ),
435 .min_pll_multiplier = CCS_LIM(sensor, MIN_PLL_MULTIPLIER),
436 .max_pll_multiplier = CCS_LIM(sensor, MAX_PLL_MULTIPLIER),
437 .min_pll_op_clk_freq_hz = CCS_LIM(sensor, MIN_PLL_OP_CLK_FREQ_MHZ),
438 .max_pll_op_clk_freq_hz = CCS_LIM(sensor, MAX_PLL_OP_CLK_FREQ_MHZ),
439 },
440 .op_fr = {
441 .min_pre_pll_clk_div = CCS_LIM(sensor, MIN_OP_PRE_PLL_CLK_DIV),
442 .max_pre_pll_clk_div = CCS_LIM(sensor, MAX_OP_PRE_PLL_CLK_DIV),
443 .min_pll_ip_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PLL_IP_CLK_FREQ_MHZ),
444 .max_pll_ip_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PLL_IP_CLK_FREQ_MHZ),
445 .min_pll_multiplier = CCS_LIM(sensor, MIN_OP_PLL_MULTIPLIER),
446 .max_pll_multiplier = CCS_LIM(sensor, MAX_OP_PLL_MULTIPLIER),
447 .min_pll_op_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PLL_OP_CLK_FREQ_MHZ),
448 .max_pll_op_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PLL_OP_CLK_FREQ_MHZ),
449 },
450 .op_bk = {
451 .min_sys_clk_div = CCS_LIM(sensor, MIN_OP_SYS_CLK_DIV),
452 .max_sys_clk_div = CCS_LIM(sensor, MAX_OP_SYS_CLK_DIV),
453 .min_pix_clk_div = CCS_LIM(sensor, MIN_OP_PIX_CLK_DIV),
454 .max_pix_clk_div = CCS_LIM(sensor, MAX_OP_PIX_CLK_DIV),
455 .min_sys_clk_freq_hz = CCS_LIM(sensor, MIN_OP_SYS_CLK_FREQ_MHZ),
456 .max_sys_clk_freq_hz = CCS_LIM(sensor, MAX_OP_SYS_CLK_FREQ_MHZ),
457 .min_pix_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PIX_CLK_FREQ_MHZ),
458 .max_pix_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PIX_CLK_FREQ_MHZ),
459 },
460 .vt_bk = {
461 .min_sys_clk_div = CCS_LIM(sensor, MIN_VT_SYS_CLK_DIV),
462 .max_sys_clk_div = CCS_LIM(sensor, MAX_VT_SYS_CLK_DIV),
463 .min_pix_clk_div = CCS_LIM(sensor, MIN_VT_PIX_CLK_DIV),
464 .max_pix_clk_div = CCS_LIM(sensor, MAX_VT_PIX_CLK_DIV),
465 .min_sys_clk_freq_hz = CCS_LIM(sensor, MIN_VT_SYS_CLK_FREQ_MHZ),
466 .max_sys_clk_freq_hz = CCS_LIM(sensor, MAX_VT_SYS_CLK_FREQ_MHZ),
467 .min_pix_clk_freq_hz = CCS_LIM(sensor, MIN_VT_PIX_CLK_FREQ_MHZ),
468 .max_pix_clk_freq_hz = CCS_LIM(sensor, MAX_VT_PIX_CLK_FREQ_MHZ),
469 },
470 .min_line_length_pck_bin = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK_BIN),
471 .min_line_length_pck = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK),
472 };
473
474 return ccs_pll_calculate(&client->dev, &lim, pll);
475 }
476
ccs_pll_update(struct ccs_sensor * sensor)477 static int ccs_pll_update(struct ccs_sensor *sensor)
478 {
479 struct ccs_pll *pll = &sensor->pll;
480 int rval;
481
482 pll->binning_horizontal = sensor->binning_horizontal;
483 pll->binning_vertical = sensor->binning_vertical;
484 pll->link_freq =
485 sensor->link_freq->qmenu_int[sensor->link_freq->val];
486 pll->scale_m = sensor->scale_m;
487 pll->bits_per_pixel = sensor->csi_format->compressed;
488
489 rval = ccs_pll_try(sensor, pll);
490 if (rval < 0)
491 return rval;
492
493 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray,
494 pll->pixel_rate_pixel_array);
495 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi);
496
497 return 0;
498 }
499
500
501 /*
502 *
503 * V4L2 Controls handling
504 *
505 */
506
__ccs_update_exposure_limits(struct ccs_sensor * sensor)507 static void __ccs_update_exposure_limits(struct ccs_sensor *sensor)
508 {
509 struct v4l2_ctrl *ctrl = sensor->exposure;
510 int max;
511
512 max = sensor->pixel_array->crop[CCS_PA_PAD_SRC].height
513 + sensor->vblank->val
514 - CCS_LIM(sensor, COARSE_INTEGRATION_TIME_MAX_MARGIN);
515
516 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max);
517 }
518
519 /*
520 * Order matters.
521 *
522 * 1. Bits-per-pixel, descending.
523 * 2. Bits-per-pixel compressed, descending.
524 * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel
525 * orders must be defined.
526 */
527 static const struct ccs_csi_data_format ccs_csi_data_formats[] = {
528 { MEDIA_BUS_FMT_SGRBG16_1X16, 16, 16, CCS_PIXEL_ORDER_GRBG, },
529 { MEDIA_BUS_FMT_SRGGB16_1X16, 16, 16, CCS_PIXEL_ORDER_RGGB, },
530 { MEDIA_BUS_FMT_SBGGR16_1X16, 16, 16, CCS_PIXEL_ORDER_BGGR, },
531 { MEDIA_BUS_FMT_SGBRG16_1X16, 16, 16, CCS_PIXEL_ORDER_GBRG, },
532 { MEDIA_BUS_FMT_SGRBG14_1X14, 14, 14, CCS_PIXEL_ORDER_GRBG, },
533 { MEDIA_BUS_FMT_SRGGB14_1X14, 14, 14, CCS_PIXEL_ORDER_RGGB, },
534 { MEDIA_BUS_FMT_SBGGR14_1X14, 14, 14, CCS_PIXEL_ORDER_BGGR, },
535 { MEDIA_BUS_FMT_SGBRG14_1X14, 14, 14, CCS_PIXEL_ORDER_GBRG, },
536 { MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, CCS_PIXEL_ORDER_GRBG, },
537 { MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, CCS_PIXEL_ORDER_RGGB, },
538 { MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, CCS_PIXEL_ORDER_BGGR, },
539 { MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, CCS_PIXEL_ORDER_GBRG, },
540 { MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, CCS_PIXEL_ORDER_GRBG, },
541 { MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, CCS_PIXEL_ORDER_RGGB, },
542 { MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, CCS_PIXEL_ORDER_BGGR, },
543 { MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, CCS_PIXEL_ORDER_GBRG, },
544 { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_GRBG, },
545 { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_RGGB, },
546 { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_BGGR, },
547 { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_GBRG, },
548 { MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, CCS_PIXEL_ORDER_GRBG, },
549 { MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, CCS_PIXEL_ORDER_RGGB, },
550 { MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, CCS_PIXEL_ORDER_BGGR, },
551 { MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, CCS_PIXEL_ORDER_GBRG, },
552 };
553
554 static const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" };
555
556 #define to_csi_format_idx(fmt) (((unsigned long)(fmt) \
557 - (unsigned long)ccs_csi_data_formats) \
558 / sizeof(*ccs_csi_data_formats))
559
ccs_pixel_order(struct ccs_sensor * sensor)560 static u32 ccs_pixel_order(struct ccs_sensor *sensor)
561 {
562 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
563 int flip = 0;
564
565 if (sensor->hflip) {
566 if (sensor->hflip->val)
567 flip |= CCS_IMAGE_ORIENTATION_HORIZONTAL_MIRROR;
568
569 if (sensor->vflip->val)
570 flip |= CCS_IMAGE_ORIENTATION_VERTICAL_FLIP;
571 }
572
573 flip ^= sensor->hvflip_inv_mask;
574
575 dev_dbg(&client->dev, "flip %d\n", flip);
576 return sensor->default_pixel_order ^ flip;
577 }
578
ccs_update_mbus_formats(struct ccs_sensor * sensor)579 static void ccs_update_mbus_formats(struct ccs_sensor *sensor)
580 {
581 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
582 unsigned int csi_format_idx =
583 to_csi_format_idx(sensor->csi_format) & ~3;
584 unsigned int internal_csi_format_idx =
585 to_csi_format_idx(sensor->internal_csi_format) & ~3;
586 unsigned int pixel_order = ccs_pixel_order(sensor);
587
588 if (WARN_ON_ONCE(max(internal_csi_format_idx, csi_format_idx) +
589 pixel_order >= ARRAY_SIZE(ccs_csi_data_formats)))
590 return;
591
592 sensor->mbus_frame_fmts =
593 sensor->default_mbus_frame_fmts << pixel_order;
594 sensor->csi_format =
595 &ccs_csi_data_formats[csi_format_idx + pixel_order];
596 sensor->internal_csi_format =
597 &ccs_csi_data_formats[internal_csi_format_idx
598 + pixel_order];
599
600 dev_dbg(&client->dev, "new pixel order %s\n",
601 pixel_order_str[pixel_order]);
602 }
603
604 static const char * const ccs_test_patterns[] = {
605 "Disabled",
606 "Solid Colour",
607 "Eight Vertical Colour Bars",
608 "Colour Bars With Fade to Grey",
609 "Pseudorandom Sequence (PN9)",
610 };
611
ccs_set_ctrl(struct v4l2_ctrl * ctrl)612 static int ccs_set_ctrl(struct v4l2_ctrl *ctrl)
613 {
614 struct ccs_sensor *sensor =
615 container_of(ctrl->handler, struct ccs_subdev, ctrl_handler)
616 ->sensor;
617 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
618 int pm_status;
619 u32 orient = 0;
620 unsigned int i;
621 int exposure;
622 int rval;
623
624 switch (ctrl->id) {
625 case V4L2_CID_HFLIP:
626 case V4L2_CID_VFLIP:
627 if (sensor->streaming)
628 return -EBUSY;
629
630 if (sensor->hflip->val)
631 orient |= CCS_IMAGE_ORIENTATION_HORIZONTAL_MIRROR;
632
633 if (sensor->vflip->val)
634 orient |= CCS_IMAGE_ORIENTATION_VERTICAL_FLIP;
635
636 orient ^= sensor->hvflip_inv_mask;
637
638 ccs_update_mbus_formats(sensor);
639
640 break;
641 case V4L2_CID_VBLANK:
642 exposure = sensor->exposure->val;
643
644 __ccs_update_exposure_limits(sensor);
645
646 if (exposure > sensor->exposure->maximum) {
647 sensor->exposure->val = sensor->exposure->maximum;
648 rval = ccs_set_ctrl(sensor->exposure);
649 if (rval < 0)
650 return rval;
651 }
652
653 break;
654 case V4L2_CID_LINK_FREQ:
655 if (sensor->streaming)
656 return -EBUSY;
657
658 rval = ccs_pll_update(sensor);
659 if (rval)
660 return rval;
661
662 return 0;
663 case V4L2_CID_TEST_PATTERN:
664 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
665 v4l2_ctrl_activate(
666 sensor->test_data[i],
667 ctrl->val ==
668 V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR);
669
670 break;
671 }
672
673 pm_status = pm_runtime_get_if_active(&client->dev, true);
674 if (!pm_status)
675 return 0;
676
677 switch (ctrl->id) {
678 case V4L2_CID_ANALOGUE_GAIN:
679 rval = ccs_write(sensor, ANALOG_GAIN_CODE_GLOBAL, ctrl->val);
680
681 break;
682
683 case V4L2_CID_CCS_ANALOGUE_LINEAR_GAIN:
684 rval = ccs_write(sensor, ANALOG_LINEAR_GAIN_GLOBAL, ctrl->val);
685
686 break;
687
688 case V4L2_CID_CCS_ANALOGUE_EXPONENTIAL_GAIN:
689 rval = ccs_write(sensor, ANALOG_EXPONENTIAL_GAIN_GLOBAL,
690 ctrl->val);
691
692 break;
693
694 case V4L2_CID_DIGITAL_GAIN:
695 if (CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) ==
696 CCS_DIGITAL_GAIN_CAPABILITY_GLOBAL) {
697 rval = ccs_write(sensor, DIGITAL_GAIN_GLOBAL,
698 ctrl->val);
699 break;
700 }
701
702 rval = ccs_write_addr(sensor,
703 SMIAPP_REG_U16_DIGITAL_GAIN_GREENR,
704 ctrl->val);
705 if (rval)
706 break;
707
708 rval = ccs_write_addr(sensor,
709 SMIAPP_REG_U16_DIGITAL_GAIN_RED,
710 ctrl->val);
711 if (rval)
712 break;
713
714 rval = ccs_write_addr(sensor,
715 SMIAPP_REG_U16_DIGITAL_GAIN_BLUE,
716 ctrl->val);
717 if (rval)
718 break;
719
720 rval = ccs_write_addr(sensor,
721 SMIAPP_REG_U16_DIGITAL_GAIN_GREENB,
722 ctrl->val);
723
724 break;
725 case V4L2_CID_EXPOSURE:
726 rval = ccs_write(sensor, COARSE_INTEGRATION_TIME, ctrl->val);
727
728 break;
729 case V4L2_CID_HFLIP:
730 case V4L2_CID_VFLIP:
731 rval = ccs_write(sensor, IMAGE_ORIENTATION, orient);
732
733 break;
734 case V4L2_CID_VBLANK:
735 rval = ccs_write(sensor, FRAME_LENGTH_LINES,
736 sensor->pixel_array->crop[
737 CCS_PA_PAD_SRC].height
738 + ctrl->val);
739
740 break;
741 case V4L2_CID_HBLANK:
742 rval = ccs_write(sensor, LINE_LENGTH_PCK,
743 sensor->pixel_array->crop[CCS_PA_PAD_SRC].width
744 + ctrl->val);
745
746 break;
747 case V4L2_CID_TEST_PATTERN:
748 rval = ccs_write(sensor, TEST_PATTERN_MODE, ctrl->val);
749
750 break;
751 case V4L2_CID_TEST_PATTERN_RED:
752 rval = ccs_write(sensor, TEST_DATA_RED, ctrl->val);
753
754 break;
755 case V4L2_CID_TEST_PATTERN_GREENR:
756 rval = ccs_write(sensor, TEST_DATA_GREENR, ctrl->val);
757
758 break;
759 case V4L2_CID_TEST_PATTERN_BLUE:
760 rval = ccs_write(sensor, TEST_DATA_BLUE, ctrl->val);
761
762 break;
763 case V4L2_CID_TEST_PATTERN_GREENB:
764 rval = ccs_write(sensor, TEST_DATA_GREENB, ctrl->val);
765
766 break;
767 case V4L2_CID_CCS_SHADING_CORRECTION:
768 rval = ccs_write(sensor, SHADING_CORRECTION_EN,
769 ctrl->val ? CCS_SHADING_CORRECTION_EN_ENABLE :
770 0);
771
772 if (!rval && sensor->luminance_level)
773 v4l2_ctrl_activate(sensor->luminance_level, ctrl->val);
774
775 break;
776 case V4L2_CID_CCS_LUMINANCE_CORRECTION_LEVEL:
777 rval = ccs_write(sensor, LUMINANCE_CORRECTION_LEVEL, ctrl->val);
778
779 break;
780 case V4L2_CID_PIXEL_RATE:
781 /* For v4l2_ctrl_s_ctrl_int64() used internally. */
782 rval = 0;
783
784 break;
785 default:
786 rval = -EINVAL;
787 }
788
789 if (pm_status > 0) {
790 pm_runtime_mark_last_busy(&client->dev);
791 pm_runtime_put_autosuspend(&client->dev);
792 }
793
794 return rval;
795 }
796
797 static const struct v4l2_ctrl_ops ccs_ctrl_ops = {
798 .s_ctrl = ccs_set_ctrl,
799 };
800
ccs_init_controls(struct ccs_sensor * sensor)801 static int ccs_init_controls(struct ccs_sensor *sensor)
802 {
803 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
804 int rval;
805
806 rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 17);
807 if (rval)
808 return rval;
809
810 sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;
811
812 switch (CCS_LIM(sensor, ANALOG_GAIN_CAPABILITY)) {
813 case CCS_ANALOG_GAIN_CAPABILITY_GLOBAL: {
814 struct {
815 const char *name;
816 u32 id;
817 s32 value;
818 } const gain_ctrls[] = {
819 { "Analogue Gain m0", V4L2_CID_CCS_ANALOGUE_GAIN_M0,
820 CCS_LIM(sensor, ANALOG_GAIN_M0), },
821 { "Analogue Gain c0", V4L2_CID_CCS_ANALOGUE_GAIN_C0,
822 CCS_LIM(sensor, ANALOG_GAIN_C0), },
823 { "Analogue Gain m1", V4L2_CID_CCS_ANALOGUE_GAIN_M1,
824 CCS_LIM(sensor, ANALOG_GAIN_M1), },
825 { "Analogue Gain c1", V4L2_CID_CCS_ANALOGUE_GAIN_C1,
826 CCS_LIM(sensor, ANALOG_GAIN_C1), },
827 };
828 struct v4l2_ctrl_config ctrl_cfg = {
829 .type = V4L2_CTRL_TYPE_INTEGER,
830 .ops = &ccs_ctrl_ops,
831 .flags = V4L2_CTRL_FLAG_READ_ONLY,
832 .step = 1,
833 };
834 unsigned int i;
835
836 for (i = 0; i < ARRAY_SIZE(gain_ctrls); i++) {
837 ctrl_cfg.name = gain_ctrls[i].name;
838 ctrl_cfg.id = gain_ctrls[i].id;
839 ctrl_cfg.min = ctrl_cfg.max = ctrl_cfg.def =
840 gain_ctrls[i].value;
841
842 v4l2_ctrl_new_custom(&sensor->pixel_array->ctrl_handler,
843 &ctrl_cfg, NULL);
844 }
845
846 v4l2_ctrl_new_std(&sensor->pixel_array->ctrl_handler,
847 &ccs_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
848 CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN),
849 CCS_LIM(sensor, ANALOG_GAIN_CODE_MAX),
850 max(CCS_LIM(sensor, ANALOG_GAIN_CODE_STEP),
851 1U),
852 CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN));
853 }
854 break;
855
856 case CCS_ANALOG_GAIN_CAPABILITY_ALTERNATE_GLOBAL: {
857 struct {
858 const char *name;
859 u32 id;
860 u16 min, max, step;
861 } const gain_ctrls[] = {
862 {
863 "Analogue Linear Gain",
864 V4L2_CID_CCS_ANALOGUE_LINEAR_GAIN,
865 CCS_LIM(sensor, ANALOG_LINEAR_GAIN_MIN),
866 CCS_LIM(sensor, ANALOG_LINEAR_GAIN_MAX),
867 max(CCS_LIM(sensor,
868 ANALOG_LINEAR_GAIN_STEP_SIZE),
869 1U),
870 },
871 {
872 "Analogue Exponential Gain",
873 V4L2_CID_CCS_ANALOGUE_EXPONENTIAL_GAIN,
874 CCS_LIM(sensor, ANALOG_EXPONENTIAL_GAIN_MIN),
875 CCS_LIM(sensor, ANALOG_EXPONENTIAL_GAIN_MAX),
876 max(CCS_LIM(sensor,
877 ANALOG_EXPONENTIAL_GAIN_STEP_SIZE),
878 1U),
879 },
880 };
881 struct v4l2_ctrl_config ctrl_cfg = {
882 .type = V4L2_CTRL_TYPE_INTEGER,
883 .ops = &ccs_ctrl_ops,
884 };
885 unsigned int i;
886
887 for (i = 0; i < ARRAY_SIZE(gain_ctrls); i++) {
888 ctrl_cfg.name = gain_ctrls[i].name;
889 ctrl_cfg.min = ctrl_cfg.def = gain_ctrls[i].min;
890 ctrl_cfg.max = gain_ctrls[i].max;
891 ctrl_cfg.step = gain_ctrls[i].step;
892 ctrl_cfg.id = gain_ctrls[i].id;
893
894 v4l2_ctrl_new_custom(&sensor->pixel_array->ctrl_handler,
895 &ctrl_cfg, NULL);
896 }
897 }
898 }
899
900 if (CCS_LIM(sensor, SHADING_CORRECTION_CAPABILITY) &
901 (CCS_SHADING_CORRECTION_CAPABILITY_COLOR_SHADING |
902 CCS_SHADING_CORRECTION_CAPABILITY_LUMINANCE_CORRECTION)) {
903 const struct v4l2_ctrl_config ctrl_cfg = {
904 .name = "Shading Correction",
905 .type = V4L2_CTRL_TYPE_BOOLEAN,
906 .id = V4L2_CID_CCS_SHADING_CORRECTION,
907 .ops = &ccs_ctrl_ops,
908 .max = 1,
909 .step = 1,
910 };
911
912 v4l2_ctrl_new_custom(&sensor->pixel_array->ctrl_handler,
913 &ctrl_cfg, NULL);
914 }
915
916 if (CCS_LIM(sensor, SHADING_CORRECTION_CAPABILITY) &
917 CCS_SHADING_CORRECTION_CAPABILITY_LUMINANCE_CORRECTION) {
918 const struct v4l2_ctrl_config ctrl_cfg = {
919 .name = "Luminance Correction Level",
920 .type = V4L2_CTRL_TYPE_BOOLEAN,
921 .id = V4L2_CID_CCS_LUMINANCE_CORRECTION_LEVEL,
922 .ops = &ccs_ctrl_ops,
923 .max = 255,
924 .step = 1,
925 .def = 128,
926 };
927
928 sensor->luminance_level =
929 v4l2_ctrl_new_custom(&sensor->pixel_array->ctrl_handler,
930 &ctrl_cfg, NULL);
931 }
932
933 if (CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) ==
934 CCS_DIGITAL_GAIN_CAPABILITY_GLOBAL ||
935 CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) ==
936 SMIAPP_DIGITAL_GAIN_CAPABILITY_PER_CHANNEL)
937 v4l2_ctrl_new_std(&sensor->pixel_array->ctrl_handler,
938 &ccs_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
939 CCS_LIM(sensor, DIGITAL_GAIN_MIN),
940 CCS_LIM(sensor, DIGITAL_GAIN_MAX),
941 max(CCS_LIM(sensor, DIGITAL_GAIN_STEP_SIZE),
942 1U),
943 0x100);
944
945 /* Exposure limits will be updated soon, use just something here. */
946 sensor->exposure = v4l2_ctrl_new_std(
947 &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,
948 V4L2_CID_EXPOSURE, 0, 0, 1, 0);
949
950 sensor->hflip = v4l2_ctrl_new_std(
951 &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,
952 V4L2_CID_HFLIP, 0, 1, 1, 0);
953 sensor->vflip = v4l2_ctrl_new_std(
954 &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,
955 V4L2_CID_VFLIP, 0, 1, 1, 0);
956
957 sensor->vblank = v4l2_ctrl_new_std(
958 &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,
959 V4L2_CID_VBLANK, 0, 1, 1, 0);
960
961 if (sensor->vblank)
962 sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE;
963
964 sensor->hblank = v4l2_ctrl_new_std(
965 &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,
966 V4L2_CID_HBLANK, 0, 1, 1, 0);
967
968 if (sensor->hblank)
969 sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE;
970
971 sensor->pixel_rate_parray = v4l2_ctrl_new_std(
972 &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,
973 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
974
975 v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler,
976 &ccs_ctrl_ops, V4L2_CID_TEST_PATTERN,
977 ARRAY_SIZE(ccs_test_patterns) - 1,
978 0, 0, ccs_test_patterns);
979
980 if (sensor->pixel_array->ctrl_handler.error) {
981 dev_err(&client->dev,
982 "pixel array controls initialization failed (%d)\n",
983 sensor->pixel_array->ctrl_handler.error);
984 return sensor->pixel_array->ctrl_handler.error;
985 }
986
987 sensor->pixel_array->sd.ctrl_handler =
988 &sensor->pixel_array->ctrl_handler;
989
990 v4l2_ctrl_cluster(2, &sensor->hflip);
991
992 rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0);
993 if (rval)
994 return rval;
995
996 sensor->src->ctrl_handler.lock = &sensor->mutex;
997
998 sensor->pixel_rate_csi = v4l2_ctrl_new_std(
999 &sensor->src->ctrl_handler, &ccs_ctrl_ops,
1000 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
1001
1002 if (sensor->src->ctrl_handler.error) {
1003 dev_err(&client->dev,
1004 "src controls initialization failed (%d)\n",
1005 sensor->src->ctrl_handler.error);
1006 return sensor->src->ctrl_handler.error;
1007 }
1008
1009 sensor->src->sd.ctrl_handler = &sensor->src->ctrl_handler;
1010
1011 return 0;
1012 }
1013
1014 /*
1015 * For controls that require information on available media bus codes
1016 * and linke frequencies.
1017 */
ccs_init_late_controls(struct ccs_sensor * sensor)1018 static int ccs_init_late_controls(struct ccs_sensor *sensor)
1019 {
1020 unsigned long *valid_link_freqs = &sensor->valid_link_freqs[
1021 sensor->csi_format->compressed - sensor->compressed_min_bpp];
1022 unsigned int i;
1023
1024 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) {
1025 int max_value = (1 << sensor->csi_format->width) - 1;
1026
1027 sensor->test_data[i] = v4l2_ctrl_new_std(
1028 &sensor->pixel_array->ctrl_handler,
1029 &ccs_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i,
1030 0, max_value, 1, max_value);
1031 }
1032
1033 sensor->link_freq = v4l2_ctrl_new_int_menu(
1034 &sensor->src->ctrl_handler, &ccs_ctrl_ops,
1035 V4L2_CID_LINK_FREQ, __fls(*valid_link_freqs),
1036 __ffs(*valid_link_freqs), sensor->hwcfg.op_sys_clock);
1037
1038 return sensor->src->ctrl_handler.error;
1039 }
1040
ccs_free_controls(struct ccs_sensor * sensor)1041 static void ccs_free_controls(struct ccs_sensor *sensor)
1042 {
1043 unsigned int i;
1044
1045 for (i = 0; i < sensor->ssds_used; i++)
1046 v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler);
1047 }
1048
ccs_get_mbus_formats(struct ccs_sensor * sensor)1049 static int ccs_get_mbus_formats(struct ccs_sensor *sensor)
1050 {
1051 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1052 struct ccs_pll *pll = &sensor->pll;
1053 u8 compressed_max_bpp = 0;
1054 unsigned int type, n;
1055 unsigned int i, pixel_order;
1056 int rval;
1057
1058 type = CCS_LIM(sensor, DATA_FORMAT_MODEL_TYPE);
1059
1060 dev_dbg(&client->dev, "data_format_model_type %d\n", type);
1061
1062 rval = ccs_read(sensor, PIXEL_ORDER, &pixel_order);
1063 if (rval)
1064 return rval;
1065
1066 if (pixel_order >= ARRAY_SIZE(pixel_order_str)) {
1067 dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order);
1068 return -EINVAL;
1069 }
1070
1071 dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order,
1072 pixel_order_str[pixel_order]);
1073
1074 switch (type) {
1075 case CCS_DATA_FORMAT_MODEL_TYPE_NORMAL:
1076 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N;
1077 break;
1078 case CCS_DATA_FORMAT_MODEL_TYPE_EXTENDED:
1079 n = CCS_LIM_DATA_FORMAT_DESCRIPTOR_MAX_N + 1;
1080 break;
1081 default:
1082 return -EINVAL;
1083 }
1084
1085 sensor->default_pixel_order = pixel_order;
1086 sensor->mbus_frame_fmts = 0;
1087
1088 for (i = 0; i < n; i++) {
1089 unsigned int fmt, j;
1090
1091 fmt = CCS_LIM_AT(sensor, DATA_FORMAT_DESCRIPTOR, i);
1092
1093 dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n",
1094 i, fmt >> 8, (u8)fmt);
1095
1096 for (j = 0; j < ARRAY_SIZE(ccs_csi_data_formats); j++) {
1097 const struct ccs_csi_data_format *f =
1098 &ccs_csi_data_formats[j];
1099
1100 if (f->pixel_order != CCS_PIXEL_ORDER_GRBG)
1101 continue;
1102
1103 if (f->width != fmt >>
1104 CCS_DATA_FORMAT_DESCRIPTOR_UNCOMPRESSED_SHIFT ||
1105 f->compressed !=
1106 (fmt & CCS_DATA_FORMAT_DESCRIPTOR_COMPRESSED_MASK))
1107 continue;
1108
1109 dev_dbg(&client->dev, "jolly good! %d\n", j);
1110
1111 sensor->default_mbus_frame_fmts |= 1 << j;
1112 }
1113 }
1114
1115 /* Figure out which BPP values can be used with which formats. */
1116 pll->binning_horizontal = 1;
1117 pll->binning_vertical = 1;
1118 pll->scale_m = sensor->scale_m;
1119
1120 for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) {
1121 sensor->compressed_min_bpp =
1122 min(ccs_csi_data_formats[i].compressed,
1123 sensor->compressed_min_bpp);
1124 compressed_max_bpp =
1125 max(ccs_csi_data_formats[i].compressed,
1126 compressed_max_bpp);
1127 }
1128
1129 sensor->valid_link_freqs = devm_kcalloc(
1130 &client->dev,
1131 compressed_max_bpp - sensor->compressed_min_bpp + 1,
1132 sizeof(*sensor->valid_link_freqs), GFP_KERNEL);
1133 if (!sensor->valid_link_freqs)
1134 return -ENOMEM;
1135
1136 for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) {
1137 const struct ccs_csi_data_format *f =
1138 &ccs_csi_data_formats[i];
1139 unsigned long *valid_link_freqs =
1140 &sensor->valid_link_freqs[
1141 f->compressed - sensor->compressed_min_bpp];
1142 unsigned int j;
1143
1144 if (!(sensor->default_mbus_frame_fmts & 1 << i))
1145 continue;
1146
1147 pll->bits_per_pixel = f->compressed;
1148
1149 for (j = 0; sensor->hwcfg.op_sys_clock[j]; j++) {
1150 pll->link_freq = sensor->hwcfg.op_sys_clock[j];
1151
1152 rval = ccs_pll_try(sensor, pll);
1153 dev_dbg(&client->dev, "link freq %u Hz, bpp %u %s\n",
1154 pll->link_freq, pll->bits_per_pixel,
1155 rval ? "not ok" : "ok");
1156 if (rval)
1157 continue;
1158
1159 set_bit(j, valid_link_freqs);
1160 }
1161
1162 if (!*valid_link_freqs) {
1163 dev_info(&client->dev,
1164 "no valid link frequencies for %u bpp\n",
1165 f->compressed);
1166 sensor->default_mbus_frame_fmts &= ~BIT(i);
1167 continue;
1168 }
1169
1170 if (!sensor->csi_format
1171 || f->width > sensor->csi_format->width
1172 || (f->width == sensor->csi_format->width
1173 && f->compressed > sensor->csi_format->compressed)) {
1174 sensor->csi_format = f;
1175 sensor->internal_csi_format = f;
1176 }
1177 }
1178
1179 if (!sensor->csi_format) {
1180 dev_err(&client->dev, "no supported mbus code found\n");
1181 return -EINVAL;
1182 }
1183
1184 ccs_update_mbus_formats(sensor);
1185
1186 return 0;
1187 }
1188
ccs_update_blanking(struct ccs_sensor * sensor)1189 static void ccs_update_blanking(struct ccs_sensor *sensor)
1190 {
1191 struct v4l2_ctrl *vblank = sensor->vblank;
1192 struct v4l2_ctrl *hblank = sensor->hblank;
1193 u16 min_fll, max_fll, min_llp, max_llp, min_lbp;
1194 int min, max;
1195
1196 if (sensor->binning_vertical > 1 || sensor->binning_horizontal > 1) {
1197 min_fll = CCS_LIM(sensor, MIN_FRAME_LENGTH_LINES_BIN);
1198 max_fll = CCS_LIM(sensor, MAX_FRAME_LENGTH_LINES_BIN);
1199 min_llp = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK_BIN);
1200 max_llp = CCS_LIM(sensor, MAX_LINE_LENGTH_PCK_BIN);
1201 min_lbp = CCS_LIM(sensor, MIN_LINE_BLANKING_PCK_BIN);
1202 } else {
1203 min_fll = CCS_LIM(sensor, MIN_FRAME_LENGTH_LINES);
1204 max_fll = CCS_LIM(sensor, MAX_FRAME_LENGTH_LINES);
1205 min_llp = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK);
1206 max_llp = CCS_LIM(sensor, MAX_LINE_LENGTH_PCK);
1207 min_lbp = CCS_LIM(sensor, MIN_LINE_BLANKING_PCK);
1208 }
1209
1210 min = max_t(int,
1211 CCS_LIM(sensor, MIN_FRAME_BLANKING_LINES),
1212 min_fll - sensor->pixel_array->crop[CCS_PA_PAD_SRC].height);
1213 max = max_fll - sensor->pixel_array->crop[CCS_PA_PAD_SRC].height;
1214
1215 __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min);
1216
1217 min = max_t(int,
1218 min_llp - sensor->pixel_array->crop[CCS_PA_PAD_SRC].width,
1219 min_lbp);
1220 max = max_llp - sensor->pixel_array->crop[CCS_PA_PAD_SRC].width;
1221
1222 __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min);
1223
1224 __ccs_update_exposure_limits(sensor);
1225 }
1226
ccs_pll_blanking_update(struct ccs_sensor * sensor)1227 static int ccs_pll_blanking_update(struct ccs_sensor *sensor)
1228 {
1229 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1230 int rval;
1231
1232 rval = ccs_pll_update(sensor);
1233 if (rval < 0)
1234 return rval;
1235
1236 /* Output from pixel array, including blanking */
1237 ccs_update_blanking(sensor);
1238
1239 dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val);
1240 dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val);
1241
1242 dev_dbg(&client->dev, "real timeperframe\t100/%d\n",
1243 sensor->pll.pixel_rate_pixel_array /
1244 ((sensor->pixel_array->crop[CCS_PA_PAD_SRC].width
1245 + sensor->hblank->val) *
1246 (sensor->pixel_array->crop[CCS_PA_PAD_SRC].height
1247 + sensor->vblank->val) / 100));
1248
1249 return 0;
1250 }
1251
1252 /*
1253 *
1254 * SMIA++ NVM handling
1255 *
1256 */
1257
ccs_read_nvm_page(struct ccs_sensor * sensor,u32 p,u8 * nvm,u8 * status)1258 static int ccs_read_nvm_page(struct ccs_sensor *sensor, u32 p, u8 *nvm,
1259 u8 *status)
1260 {
1261 unsigned int i;
1262 int rval;
1263 u32 s;
1264
1265 *status = 0;
1266
1267 rval = ccs_write(sensor, DATA_TRANSFER_IF_1_PAGE_SELECT, p);
1268 if (rval)
1269 return rval;
1270
1271 rval = ccs_write(sensor, DATA_TRANSFER_IF_1_CTRL,
1272 CCS_DATA_TRANSFER_IF_1_CTRL_ENABLE);
1273 if (rval)
1274 return rval;
1275
1276 rval = ccs_read(sensor, DATA_TRANSFER_IF_1_STATUS, &s);
1277 if (rval)
1278 return rval;
1279
1280 if (s & CCS_DATA_TRANSFER_IF_1_STATUS_IMPROPER_IF_USAGE) {
1281 *status = s;
1282 return -ENODATA;
1283 }
1284
1285 if (CCS_LIM(sensor, DATA_TRANSFER_IF_CAPABILITY) &
1286 CCS_DATA_TRANSFER_IF_CAPABILITY_POLLING) {
1287 for (i = 1000; i > 0; i--) {
1288 if (s & CCS_DATA_TRANSFER_IF_1_STATUS_READ_IF_READY)
1289 break;
1290
1291 rval = ccs_read(sensor, DATA_TRANSFER_IF_1_STATUS, &s);
1292 if (rval)
1293 return rval;
1294 }
1295
1296 if (!i)
1297 return -ETIMEDOUT;
1298 }
1299
1300 for (i = 0; i <= CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P; i++) {
1301 u32 v;
1302
1303 rval = ccs_read(sensor, DATA_TRANSFER_IF_1_DATA(i), &v);
1304 if (rval)
1305 return rval;
1306
1307 *nvm++ = v;
1308 }
1309
1310 return 0;
1311 }
1312
ccs_read_nvm(struct ccs_sensor * sensor,unsigned char * nvm,size_t nvm_size)1313 static int ccs_read_nvm(struct ccs_sensor *sensor, unsigned char *nvm,
1314 size_t nvm_size)
1315 {
1316 u8 status = 0;
1317 u32 p;
1318 int rval = 0, rval2;
1319
1320 for (p = 0; p < nvm_size / (CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P + 1)
1321 && !rval; p++) {
1322 rval = ccs_read_nvm_page(sensor, p, nvm, &status);
1323 nvm += CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P + 1;
1324 }
1325
1326 if (rval == -ENODATA &&
1327 status & CCS_DATA_TRANSFER_IF_1_STATUS_IMPROPER_IF_USAGE)
1328 rval = 0;
1329
1330 rval2 = ccs_write(sensor, DATA_TRANSFER_IF_1_CTRL, 0);
1331 if (rval < 0)
1332 return rval;
1333 else
1334 return rval2 ?: p * (CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P + 1);
1335 }
1336
1337 /*
1338 *
1339 * SMIA++ CCI address control
1340 *
1341 */
ccs_change_cci_addr(struct ccs_sensor * sensor)1342 static int ccs_change_cci_addr(struct ccs_sensor *sensor)
1343 {
1344 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1345 int rval;
1346 u32 val;
1347
1348 client->addr = sensor->hwcfg.i2c_addr_dfl;
1349
1350 rval = ccs_write(sensor, CCI_ADDRESS_CTRL,
1351 sensor->hwcfg.i2c_addr_alt << 1);
1352 if (rval)
1353 return rval;
1354
1355 client->addr = sensor->hwcfg.i2c_addr_alt;
1356
1357 /* verify addr change went ok */
1358 rval = ccs_read(sensor, CCI_ADDRESS_CTRL, &val);
1359 if (rval)
1360 return rval;
1361
1362 if (val != sensor->hwcfg.i2c_addr_alt << 1)
1363 return -ENODEV;
1364
1365 return 0;
1366 }
1367
1368 /*
1369 *
1370 * SMIA++ Mode Control
1371 *
1372 */
ccs_setup_flash_strobe(struct ccs_sensor * sensor)1373 static int ccs_setup_flash_strobe(struct ccs_sensor *sensor)
1374 {
1375 struct ccs_flash_strobe_parms *strobe_setup;
1376 unsigned int ext_freq = sensor->hwcfg.ext_clk;
1377 u32 tmp;
1378 u32 strobe_adjustment;
1379 u32 strobe_width_high_rs;
1380 int rval;
1381
1382 strobe_setup = sensor->hwcfg.strobe_setup;
1383
1384 /*
1385 * How to calculate registers related to strobe length. Please
1386 * do not change, or if you do at least know what you're
1387 * doing. :-)
1388 *
1389 * Sakari Ailus <sakari.ailus@linux.intel.com> 2010-10-25
1390 *
1391 * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl
1392 * / EXTCLK freq [Hz]) * flash_strobe_adjustment
1393 *
1394 * tFlash_strobe_width_ctrl E N, [1 - 0xffff]
1395 * flash_strobe_adjustment E N, [1 - 0xff]
1396 *
1397 * The formula above is written as below to keep it on one
1398 * line:
1399 *
1400 * l / 10^6 = w / e * a
1401 *
1402 * Let's mark w * a by x:
1403 *
1404 * x = w * a
1405 *
1406 * Thus, we get:
1407 *
1408 * x = l * e / 10^6
1409 *
1410 * The strobe width must be at least as long as requested,
1411 * thus rounding upwards is needed.
1412 *
1413 * x = (l * e + 10^6 - 1) / 10^6
1414 * -----------------------------
1415 *
1416 * Maximum possible accuracy is wanted at all times. Thus keep
1417 * a as small as possible.
1418 *
1419 * Calculate a, assuming maximum w, with rounding upwards:
1420 *
1421 * a = (x + (2^16 - 1) - 1) / (2^16 - 1)
1422 * -------------------------------------
1423 *
1424 * Thus, we also get w, with that a, with rounding upwards:
1425 *
1426 * w = (x + a - 1) / a
1427 * -------------------
1428 *
1429 * To get limits:
1430 *
1431 * x E [1, (2^16 - 1) * (2^8 - 1)]
1432 *
1433 * Substituting maximum x to the original formula (with rounding),
1434 * the maximum l is thus
1435 *
1436 * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1
1437 *
1438 * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e
1439 * --------------------------------------------------
1440 *
1441 * flash_strobe_length must be clamped between 1 and
1442 * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq.
1443 *
1444 * Then,
1445 *
1446 * flash_strobe_adjustment = ((flash_strobe_length *
1447 * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1)
1448 *
1449 * tFlash_strobe_width_ctrl = ((flash_strobe_length *
1450 * EXTCLK freq + 10^6 - 1) / 10^6 +
1451 * flash_strobe_adjustment - 1) / flash_strobe_adjustment
1452 */
1453 tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) -
1454 1000000 + 1, ext_freq);
1455 strobe_setup->strobe_width_high_us =
1456 clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp);
1457
1458 tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq +
1459 1000000 - 1), 1000000ULL);
1460 strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1);
1461 strobe_width_high_rs = (tmp + strobe_adjustment - 1) /
1462 strobe_adjustment;
1463
1464 rval = ccs_write(sensor, FLASH_MODE_RS, strobe_setup->mode);
1465 if (rval < 0)
1466 goto out;
1467
1468 rval = ccs_write(sensor, FLASH_STROBE_ADJUSTMENT, strobe_adjustment);
1469 if (rval < 0)
1470 goto out;
1471
1472 rval = ccs_write(sensor, TFLASH_STROBE_WIDTH_HIGH_RS_CTRL,
1473 strobe_width_high_rs);
1474 if (rval < 0)
1475 goto out;
1476
1477 rval = ccs_write(sensor, TFLASH_STROBE_DELAY_RS_CTRL,
1478 strobe_setup->strobe_delay);
1479 if (rval < 0)
1480 goto out;
1481
1482 rval = ccs_write(sensor, FLASH_STROBE_START_POINT,
1483 strobe_setup->stobe_start_point);
1484 if (rval < 0)
1485 goto out;
1486
1487 rval = ccs_write(sensor, FLASH_TRIGGER_RS, strobe_setup->trigger);
1488
1489 out:
1490 sensor->hwcfg.strobe_setup->trigger = 0;
1491
1492 return rval;
1493 }
1494
1495 /* -----------------------------------------------------------------------------
1496 * Power management
1497 */
1498
ccs_write_msr_regs(struct ccs_sensor * sensor)1499 static int ccs_write_msr_regs(struct ccs_sensor *sensor)
1500 {
1501 int rval;
1502
1503 rval = ccs_write_data_regs(sensor,
1504 sensor->sdata.sensor_manufacturer_regs,
1505 sensor->sdata.num_sensor_manufacturer_regs);
1506 if (rval)
1507 return rval;
1508
1509 return ccs_write_data_regs(sensor,
1510 sensor->mdata.module_manufacturer_regs,
1511 sensor->mdata.num_module_manufacturer_regs);
1512 }
1513
ccs_update_phy_ctrl(struct ccs_sensor * sensor)1514 static int ccs_update_phy_ctrl(struct ccs_sensor *sensor)
1515 {
1516 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1517 u8 val;
1518
1519 if (!sensor->ccs_limits)
1520 return 0;
1521
1522 if (CCS_LIM(sensor, PHY_CTRL_CAPABILITY) &
1523 CCS_PHY_CTRL_CAPABILITY_AUTO_PHY_CTL) {
1524 val = CCS_PHY_CTRL_AUTO;
1525 } else if (CCS_LIM(sensor, PHY_CTRL_CAPABILITY) &
1526 CCS_PHY_CTRL_CAPABILITY_UI_PHY_CTL) {
1527 val = CCS_PHY_CTRL_UI;
1528 } else {
1529 dev_err(&client->dev, "manual PHY control not supported\n");
1530 return -EINVAL;
1531 }
1532
1533 return ccs_write(sensor, PHY_CTRL, val);
1534 }
1535
ccs_power_on(struct device * dev)1536 static int ccs_power_on(struct device *dev)
1537 {
1538 struct v4l2_subdev *subdev = dev_get_drvdata(dev);
1539 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
1540 /*
1541 * The sub-device related to the I2C device is always the
1542 * source one, i.e. ssds[0].
1543 */
1544 struct ccs_sensor *sensor =
1545 container_of(ssd, struct ccs_sensor, ssds[0]);
1546 const struct ccs_device *ccsdev = device_get_match_data(dev);
1547 int rval;
1548
1549 rval = regulator_bulk_enable(ARRAY_SIZE(ccs_regulators),
1550 sensor->regulators);
1551 if (rval) {
1552 dev_err(dev, "failed to enable vana regulator\n");
1553 return rval;
1554 }
1555
1556 if (sensor->reset || sensor->xshutdown || sensor->ext_clk) {
1557 unsigned int sleep;
1558
1559 rval = clk_prepare_enable(sensor->ext_clk);
1560 if (rval < 0) {
1561 dev_dbg(dev, "failed to enable xclk\n");
1562 goto out_xclk_fail;
1563 }
1564
1565 gpiod_set_value(sensor->reset, 0);
1566 gpiod_set_value(sensor->xshutdown, 1);
1567
1568 if (ccsdev->flags & CCS_DEVICE_FLAG_IS_SMIA)
1569 sleep = SMIAPP_RESET_DELAY(sensor->hwcfg.ext_clk);
1570 else
1571 sleep = 5000;
1572
1573 usleep_range(sleep, sleep);
1574 }
1575
1576 /*
1577 * Failures to respond to the address change command have been noticed.
1578 * Those failures seem to be caused by the sensor requiring a longer
1579 * boot time than advertised. An additional 10ms delay seems to work
1580 * around the issue, but the SMIA++ I2C write retry hack makes the delay
1581 * unnecessary. The failures need to be investigated to find a proper
1582 * fix, and a delay will likely need to be added here if the I2C write
1583 * retry hack is reverted before the root cause of the boot time issue
1584 * is found.
1585 */
1586
1587 if (!sensor->reset && !sensor->xshutdown) {
1588 u8 retry = 100;
1589 u32 reset;
1590
1591 rval = ccs_write(sensor, SOFTWARE_RESET, CCS_SOFTWARE_RESET_ON);
1592 if (rval < 0) {
1593 dev_err(dev, "software reset failed\n");
1594 goto out_cci_addr_fail;
1595 }
1596
1597 do {
1598 rval = ccs_read(sensor, SOFTWARE_RESET, &reset);
1599 reset = !rval && reset == CCS_SOFTWARE_RESET_OFF;
1600 if (reset)
1601 break;
1602
1603 usleep_range(1000, 2000);
1604 } while (--retry);
1605
1606 if (!reset)
1607 return -EIO;
1608 }
1609
1610 if (sensor->hwcfg.i2c_addr_alt) {
1611 rval = ccs_change_cci_addr(sensor);
1612 if (rval) {
1613 dev_err(dev, "cci address change error\n");
1614 goto out_cci_addr_fail;
1615 }
1616 }
1617
1618 rval = ccs_write(sensor, COMPRESSION_MODE,
1619 CCS_COMPRESSION_MODE_DPCM_PCM_SIMPLE);
1620 if (rval) {
1621 dev_err(dev, "compression mode set failed\n");
1622 goto out_cci_addr_fail;
1623 }
1624
1625 rval = ccs_write(sensor, EXTCLK_FREQUENCY_MHZ,
1626 sensor->hwcfg.ext_clk / (1000000 / (1 << 8)));
1627 if (rval) {
1628 dev_err(dev, "extclk frequency set failed\n");
1629 goto out_cci_addr_fail;
1630 }
1631
1632 rval = ccs_write(sensor, CSI_LANE_MODE, sensor->hwcfg.lanes - 1);
1633 if (rval) {
1634 dev_err(dev, "csi lane mode set failed\n");
1635 goto out_cci_addr_fail;
1636 }
1637
1638 rval = ccs_write(sensor, FAST_STANDBY_CTRL,
1639 CCS_FAST_STANDBY_CTRL_FRAME_TRUNCATION);
1640 if (rval) {
1641 dev_err(dev, "fast standby set failed\n");
1642 goto out_cci_addr_fail;
1643 }
1644
1645 rval = ccs_write(sensor, CSI_SIGNALING_MODE,
1646 sensor->hwcfg.csi_signalling_mode);
1647 if (rval) {
1648 dev_err(dev, "csi signalling mode set failed\n");
1649 goto out_cci_addr_fail;
1650 }
1651
1652 rval = ccs_update_phy_ctrl(sensor);
1653 if (rval < 0)
1654 goto out_cci_addr_fail;
1655
1656 rval = ccs_write_msr_regs(sensor);
1657 if (rval)
1658 goto out_cci_addr_fail;
1659
1660 rval = ccs_call_quirk(sensor, post_poweron);
1661 if (rval) {
1662 dev_err(dev, "post_poweron quirks failed\n");
1663 goto out_cci_addr_fail;
1664 }
1665
1666 return 0;
1667
1668 out_cci_addr_fail:
1669 gpiod_set_value(sensor->reset, 1);
1670 gpiod_set_value(sensor->xshutdown, 0);
1671 clk_disable_unprepare(sensor->ext_clk);
1672
1673 out_xclk_fail:
1674 regulator_bulk_disable(ARRAY_SIZE(ccs_regulators),
1675 sensor->regulators);
1676
1677 return rval;
1678 }
1679
ccs_power_off(struct device * dev)1680 static int ccs_power_off(struct device *dev)
1681 {
1682 struct v4l2_subdev *subdev = dev_get_drvdata(dev);
1683 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
1684 struct ccs_sensor *sensor =
1685 container_of(ssd, struct ccs_sensor, ssds[0]);
1686
1687 /*
1688 * Currently power/clock to lens are enable/disabled separately
1689 * but they are essentially the same signals. So if the sensor is
1690 * powered off while the lens is powered on the sensor does not
1691 * really see a power off and next time the cci address change
1692 * will fail. So do a soft reset explicitly here.
1693 */
1694 if (sensor->hwcfg.i2c_addr_alt)
1695 ccs_write(sensor, SOFTWARE_RESET, CCS_SOFTWARE_RESET_ON);
1696
1697 gpiod_set_value(sensor->reset, 1);
1698 gpiod_set_value(sensor->xshutdown, 0);
1699 clk_disable_unprepare(sensor->ext_clk);
1700 usleep_range(5000, 5000);
1701 regulator_bulk_disable(ARRAY_SIZE(ccs_regulators),
1702 sensor->regulators);
1703 sensor->streaming = false;
1704
1705 return 0;
1706 }
1707
1708 /* -----------------------------------------------------------------------------
1709 * Video stream management
1710 */
1711
ccs_start_streaming(struct ccs_sensor * sensor)1712 static int ccs_start_streaming(struct ccs_sensor *sensor)
1713 {
1714 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1715 unsigned int binning_mode;
1716 int rval;
1717
1718 mutex_lock(&sensor->mutex);
1719
1720 rval = ccs_write(sensor, CSI_DATA_FORMAT,
1721 (sensor->csi_format->width << 8) |
1722 sensor->csi_format->compressed);
1723 if (rval)
1724 goto out;
1725
1726 /* Binning configuration */
1727 if (sensor->binning_horizontal == 1 &&
1728 sensor->binning_vertical == 1) {
1729 binning_mode = 0;
1730 } else {
1731 u8 binning_type =
1732 (sensor->binning_horizontal << 4)
1733 | sensor->binning_vertical;
1734
1735 rval = ccs_write(sensor, BINNING_TYPE, binning_type);
1736 if (rval < 0)
1737 goto out;
1738
1739 binning_mode = 1;
1740 }
1741 rval = ccs_write(sensor, BINNING_MODE, binning_mode);
1742 if (rval < 0)
1743 goto out;
1744
1745 /* Set up PLL */
1746 rval = ccs_pll_configure(sensor);
1747 if (rval)
1748 goto out;
1749
1750 /* Analog crop start coordinates */
1751 rval = ccs_write(sensor, X_ADDR_START,
1752 sensor->pixel_array->crop[CCS_PA_PAD_SRC].left);
1753 if (rval < 0)
1754 goto out;
1755
1756 rval = ccs_write(sensor, Y_ADDR_START,
1757 sensor->pixel_array->crop[CCS_PA_PAD_SRC].top);
1758 if (rval < 0)
1759 goto out;
1760
1761 /* Analog crop end coordinates */
1762 rval = ccs_write(
1763 sensor, X_ADDR_END,
1764 sensor->pixel_array->crop[CCS_PA_PAD_SRC].left
1765 + sensor->pixel_array->crop[CCS_PA_PAD_SRC].width - 1);
1766 if (rval < 0)
1767 goto out;
1768
1769 rval = ccs_write(
1770 sensor, Y_ADDR_END,
1771 sensor->pixel_array->crop[CCS_PA_PAD_SRC].top
1772 + sensor->pixel_array->crop[CCS_PA_PAD_SRC].height - 1);
1773 if (rval < 0)
1774 goto out;
1775
1776 /*
1777 * Output from pixel array, including blanking, is set using
1778 * controls below. No need to set here.
1779 */
1780
1781 /* Digital crop */
1782 if (CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY)
1783 == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
1784 rval = ccs_write(
1785 sensor, DIGITAL_CROP_X_OFFSET,
1786 sensor->scaler->crop[CCS_PAD_SINK].left);
1787 if (rval < 0)
1788 goto out;
1789
1790 rval = ccs_write(
1791 sensor, DIGITAL_CROP_Y_OFFSET,
1792 sensor->scaler->crop[CCS_PAD_SINK].top);
1793 if (rval < 0)
1794 goto out;
1795
1796 rval = ccs_write(
1797 sensor, DIGITAL_CROP_IMAGE_WIDTH,
1798 sensor->scaler->crop[CCS_PAD_SINK].width);
1799 if (rval < 0)
1800 goto out;
1801
1802 rval = ccs_write(
1803 sensor, DIGITAL_CROP_IMAGE_HEIGHT,
1804 sensor->scaler->crop[CCS_PAD_SINK].height);
1805 if (rval < 0)
1806 goto out;
1807 }
1808
1809 /* Scaling */
1810 if (CCS_LIM(sensor, SCALING_CAPABILITY)
1811 != CCS_SCALING_CAPABILITY_NONE) {
1812 rval = ccs_write(sensor, SCALING_MODE, sensor->scaling_mode);
1813 if (rval < 0)
1814 goto out;
1815
1816 rval = ccs_write(sensor, SCALE_M, sensor->scale_m);
1817 if (rval < 0)
1818 goto out;
1819 }
1820
1821 /* Output size from sensor */
1822 rval = ccs_write(sensor, X_OUTPUT_SIZE,
1823 sensor->src->crop[CCS_PAD_SRC].width);
1824 if (rval < 0)
1825 goto out;
1826 rval = ccs_write(sensor, Y_OUTPUT_SIZE,
1827 sensor->src->crop[CCS_PAD_SRC].height);
1828 if (rval < 0)
1829 goto out;
1830
1831 if (CCS_LIM(sensor, FLASH_MODE_CAPABILITY) &
1832 (CCS_FLASH_MODE_CAPABILITY_SINGLE_STROBE |
1833 SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE) &&
1834 sensor->hwcfg.strobe_setup != NULL &&
1835 sensor->hwcfg.strobe_setup->trigger != 0) {
1836 rval = ccs_setup_flash_strobe(sensor);
1837 if (rval)
1838 goto out;
1839 }
1840
1841 rval = ccs_call_quirk(sensor, pre_streamon);
1842 if (rval) {
1843 dev_err(&client->dev, "pre_streamon quirks failed\n");
1844 goto out;
1845 }
1846
1847 rval = ccs_write(sensor, MODE_SELECT, CCS_MODE_SELECT_STREAMING);
1848
1849 out:
1850 mutex_unlock(&sensor->mutex);
1851
1852 return rval;
1853 }
1854
ccs_stop_streaming(struct ccs_sensor * sensor)1855 static int ccs_stop_streaming(struct ccs_sensor *sensor)
1856 {
1857 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1858 int rval;
1859
1860 mutex_lock(&sensor->mutex);
1861 rval = ccs_write(sensor, MODE_SELECT, CCS_MODE_SELECT_SOFTWARE_STANDBY);
1862 if (rval)
1863 goto out;
1864
1865 rval = ccs_call_quirk(sensor, post_streamoff);
1866 if (rval)
1867 dev_err(&client->dev, "post_streamoff quirks failed\n");
1868
1869 out:
1870 mutex_unlock(&sensor->mutex);
1871 return rval;
1872 }
1873
1874 /* -----------------------------------------------------------------------------
1875 * V4L2 subdev video operations
1876 */
1877
ccs_pm_get_init(struct ccs_sensor * sensor)1878 static int ccs_pm_get_init(struct ccs_sensor *sensor)
1879 {
1880 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1881 int rval;
1882
1883 rval = pm_runtime_get_sync(&client->dev);
1884 if (rval < 0) {
1885 pm_runtime_put_noidle(&client->dev);
1886
1887 return rval;
1888 } else if (!rval) {
1889 rval = v4l2_ctrl_handler_setup(&sensor->pixel_array->
1890 ctrl_handler);
1891 if (rval)
1892 return rval;
1893
1894 return v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
1895 }
1896
1897 return 0;
1898 }
1899
ccs_set_stream(struct v4l2_subdev * subdev,int enable)1900 static int ccs_set_stream(struct v4l2_subdev *subdev, int enable)
1901 {
1902 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
1903 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1904 int rval;
1905
1906 if (sensor->streaming == enable)
1907 return 0;
1908
1909 if (!enable) {
1910 ccs_stop_streaming(sensor);
1911 sensor->streaming = false;
1912 pm_runtime_mark_last_busy(&client->dev);
1913 pm_runtime_put_autosuspend(&client->dev);
1914
1915 return 0;
1916 }
1917
1918 rval = ccs_pm_get_init(sensor);
1919 if (rval)
1920 return rval;
1921
1922 sensor->streaming = true;
1923
1924 rval = ccs_start_streaming(sensor);
1925 if (rval < 0) {
1926 sensor->streaming = false;
1927 pm_runtime_mark_last_busy(&client->dev);
1928 pm_runtime_put_autosuspend(&client->dev);
1929 }
1930
1931 return rval;
1932 }
1933
ccs_enum_mbus_code(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)1934 static int ccs_enum_mbus_code(struct v4l2_subdev *subdev,
1935 struct v4l2_subdev_pad_config *cfg,
1936 struct v4l2_subdev_mbus_code_enum *code)
1937 {
1938 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1939 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
1940 unsigned int i;
1941 int idx = -1;
1942 int rval = -EINVAL;
1943
1944 mutex_lock(&sensor->mutex);
1945
1946 dev_err(&client->dev, "subdev %s, pad %d, index %d\n",
1947 subdev->name, code->pad, code->index);
1948
1949 if (subdev != &sensor->src->sd || code->pad != CCS_PAD_SRC) {
1950 if (code->index)
1951 goto out;
1952
1953 code->code = sensor->internal_csi_format->code;
1954 rval = 0;
1955 goto out;
1956 }
1957
1958 for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) {
1959 if (sensor->mbus_frame_fmts & (1 << i))
1960 idx++;
1961
1962 if (idx == code->index) {
1963 code->code = ccs_csi_data_formats[i].code;
1964 dev_err(&client->dev, "found index %d, i %d, code %x\n",
1965 code->index, i, code->code);
1966 rval = 0;
1967 break;
1968 }
1969 }
1970
1971 out:
1972 mutex_unlock(&sensor->mutex);
1973
1974 return rval;
1975 }
1976
__ccs_get_mbus_code(struct v4l2_subdev * subdev,unsigned int pad)1977 static u32 __ccs_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad)
1978 {
1979 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
1980
1981 if (subdev == &sensor->src->sd && pad == CCS_PAD_SRC)
1982 return sensor->csi_format->code;
1983 else
1984 return sensor->internal_csi_format->code;
1985 }
1986
__ccs_get_format(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1987 static int __ccs_get_format(struct v4l2_subdev *subdev,
1988 struct v4l2_subdev_pad_config *cfg,
1989 struct v4l2_subdev_format *fmt)
1990 {
1991 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
1992
1993 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1994 fmt->format = *v4l2_subdev_get_try_format(subdev, cfg,
1995 fmt->pad);
1996 } else {
1997 struct v4l2_rect *r;
1998
1999 if (fmt->pad == ssd->source_pad)
2000 r = &ssd->crop[ssd->source_pad];
2001 else
2002 r = &ssd->sink_fmt;
2003
2004 fmt->format.code = __ccs_get_mbus_code(subdev, fmt->pad);
2005 fmt->format.width = r->width;
2006 fmt->format.height = r->height;
2007 fmt->format.field = V4L2_FIELD_NONE;
2008 }
2009
2010 return 0;
2011 }
2012
ccs_get_format(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)2013 static int ccs_get_format(struct v4l2_subdev *subdev,
2014 struct v4l2_subdev_pad_config *cfg,
2015 struct v4l2_subdev_format *fmt)
2016 {
2017 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2018 int rval;
2019
2020 mutex_lock(&sensor->mutex);
2021 rval = __ccs_get_format(subdev, cfg, fmt);
2022 mutex_unlock(&sensor->mutex);
2023
2024 return rval;
2025 }
2026
ccs_get_crop_compose(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_rect ** crops,struct v4l2_rect ** comps,int which)2027 static void ccs_get_crop_compose(struct v4l2_subdev *subdev,
2028 struct v4l2_subdev_pad_config *cfg,
2029 struct v4l2_rect **crops,
2030 struct v4l2_rect **comps, int which)
2031 {
2032 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2033 unsigned int i;
2034
2035 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2036 if (crops)
2037 for (i = 0; i < subdev->entity.num_pads; i++)
2038 crops[i] = &ssd->crop[i];
2039 if (comps)
2040 *comps = &ssd->compose;
2041 } else {
2042 if (crops) {
2043 for (i = 0; i < subdev->entity.num_pads; i++)
2044 crops[i] = v4l2_subdev_get_try_crop(subdev,
2045 cfg, i);
2046 }
2047 if (comps)
2048 *comps = v4l2_subdev_get_try_compose(subdev, cfg,
2049 CCS_PAD_SINK);
2050 }
2051 }
2052
2053 /* Changes require propagation only on sink pad. */
ccs_propagate(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,int which,int target)2054 static void ccs_propagate(struct v4l2_subdev *subdev,
2055 struct v4l2_subdev_pad_config *cfg, int which,
2056 int target)
2057 {
2058 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2059 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2060 struct v4l2_rect *comp, *crops[CCS_PADS];
2061
2062 ccs_get_crop_compose(subdev, cfg, crops, &comp, which);
2063
2064 switch (target) {
2065 case V4L2_SEL_TGT_CROP:
2066 comp->width = crops[CCS_PAD_SINK]->width;
2067 comp->height = crops[CCS_PAD_SINK]->height;
2068 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2069 if (ssd == sensor->scaler) {
2070 sensor->scale_m = CCS_LIM(sensor, SCALER_N_MIN);
2071 sensor->scaling_mode =
2072 CCS_SCALING_MODE_NO_SCALING;
2073 } else if (ssd == sensor->binner) {
2074 sensor->binning_horizontal = 1;
2075 sensor->binning_vertical = 1;
2076 }
2077 }
2078 fallthrough;
2079 case V4L2_SEL_TGT_COMPOSE:
2080 *crops[CCS_PAD_SRC] = *comp;
2081 break;
2082 default:
2083 WARN_ON_ONCE(1);
2084 }
2085 }
2086
2087 static const struct ccs_csi_data_format
ccs_validate_csi_data_format(struct ccs_sensor * sensor,u32 code)2088 *ccs_validate_csi_data_format(struct ccs_sensor *sensor, u32 code)
2089 {
2090 unsigned int i;
2091
2092 for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) {
2093 if (sensor->mbus_frame_fmts & (1 << i) &&
2094 ccs_csi_data_formats[i].code == code)
2095 return &ccs_csi_data_formats[i];
2096 }
2097
2098 return sensor->csi_format;
2099 }
2100
ccs_set_format_source(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)2101 static int ccs_set_format_source(struct v4l2_subdev *subdev,
2102 struct v4l2_subdev_pad_config *cfg,
2103 struct v4l2_subdev_format *fmt)
2104 {
2105 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2106 const struct ccs_csi_data_format *csi_format,
2107 *old_csi_format = sensor->csi_format;
2108 unsigned long *valid_link_freqs;
2109 u32 code = fmt->format.code;
2110 unsigned int i;
2111 int rval;
2112
2113 rval = __ccs_get_format(subdev, cfg, fmt);
2114 if (rval)
2115 return rval;
2116
2117 /*
2118 * Media bus code is changeable on src subdev's source pad. On
2119 * other source pads we just get format here.
2120 */
2121 if (subdev != &sensor->src->sd)
2122 return 0;
2123
2124 csi_format = ccs_validate_csi_data_format(sensor, code);
2125
2126 fmt->format.code = csi_format->code;
2127
2128 if (fmt->which != V4L2_SUBDEV_FORMAT_ACTIVE)
2129 return 0;
2130
2131 sensor->csi_format = csi_format;
2132
2133 if (csi_format->width != old_csi_format->width)
2134 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
2135 __v4l2_ctrl_modify_range(
2136 sensor->test_data[i], 0,
2137 (1 << csi_format->width) - 1, 1, 0);
2138
2139 if (csi_format->compressed == old_csi_format->compressed)
2140 return 0;
2141
2142 valid_link_freqs =
2143 &sensor->valid_link_freqs[sensor->csi_format->compressed
2144 - sensor->compressed_min_bpp];
2145
2146 __v4l2_ctrl_modify_range(
2147 sensor->link_freq, 0,
2148 __fls(*valid_link_freqs), ~*valid_link_freqs,
2149 __ffs(*valid_link_freqs));
2150
2151 return ccs_pll_update(sensor);
2152 }
2153
ccs_set_format(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)2154 static int ccs_set_format(struct v4l2_subdev *subdev,
2155 struct v4l2_subdev_pad_config *cfg,
2156 struct v4l2_subdev_format *fmt)
2157 {
2158 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2159 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2160 struct v4l2_rect *crops[CCS_PADS];
2161
2162 mutex_lock(&sensor->mutex);
2163
2164 if (fmt->pad == ssd->source_pad) {
2165 int rval;
2166
2167 rval = ccs_set_format_source(subdev, cfg, fmt);
2168
2169 mutex_unlock(&sensor->mutex);
2170
2171 return rval;
2172 }
2173
2174 /* Sink pad. Width and height are changeable here. */
2175 fmt->format.code = __ccs_get_mbus_code(subdev, fmt->pad);
2176 fmt->format.width &= ~1;
2177 fmt->format.height &= ~1;
2178 fmt->format.field = V4L2_FIELD_NONE;
2179
2180 fmt->format.width =
2181 clamp(fmt->format.width,
2182 CCS_LIM(sensor, MIN_X_OUTPUT_SIZE),
2183 CCS_LIM(sensor, MAX_X_OUTPUT_SIZE));
2184 fmt->format.height =
2185 clamp(fmt->format.height,
2186 CCS_LIM(sensor, MIN_Y_OUTPUT_SIZE),
2187 CCS_LIM(sensor, MAX_Y_OUTPUT_SIZE));
2188
2189 ccs_get_crop_compose(subdev, cfg, crops, NULL, fmt->which);
2190
2191 crops[ssd->sink_pad]->left = 0;
2192 crops[ssd->sink_pad]->top = 0;
2193 crops[ssd->sink_pad]->width = fmt->format.width;
2194 crops[ssd->sink_pad]->height = fmt->format.height;
2195 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
2196 ssd->sink_fmt = *crops[ssd->sink_pad];
2197 ccs_propagate(subdev, cfg, fmt->which, V4L2_SEL_TGT_CROP);
2198
2199 mutex_unlock(&sensor->mutex);
2200
2201 return 0;
2202 }
2203
2204 /*
2205 * Calculate goodness of scaled image size compared to expected image
2206 * size and flags provided.
2207 */
2208 #define SCALING_GOODNESS 100000
2209 #define SCALING_GOODNESS_EXTREME 100000000
scaling_goodness(struct v4l2_subdev * subdev,int w,int ask_w,int h,int ask_h,u32 flags)2210 static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w,
2211 int h, int ask_h, u32 flags)
2212 {
2213 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2214 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2215 int val = 0;
2216
2217 w &= ~1;
2218 ask_w &= ~1;
2219 h &= ~1;
2220 ask_h &= ~1;
2221
2222 if (flags & V4L2_SEL_FLAG_GE) {
2223 if (w < ask_w)
2224 val -= SCALING_GOODNESS;
2225 if (h < ask_h)
2226 val -= SCALING_GOODNESS;
2227 }
2228
2229 if (flags & V4L2_SEL_FLAG_LE) {
2230 if (w > ask_w)
2231 val -= SCALING_GOODNESS;
2232 if (h > ask_h)
2233 val -= SCALING_GOODNESS;
2234 }
2235
2236 val -= abs(w - ask_w);
2237 val -= abs(h - ask_h);
2238
2239 if (w < CCS_LIM(sensor, MIN_X_OUTPUT_SIZE))
2240 val -= SCALING_GOODNESS_EXTREME;
2241
2242 dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n",
2243 w, ask_w, h, ask_h, val);
2244
2245 return val;
2246 }
2247
ccs_set_compose_binner(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel,struct v4l2_rect ** crops,struct v4l2_rect * comp)2248 static void ccs_set_compose_binner(struct v4l2_subdev *subdev,
2249 struct v4l2_subdev_pad_config *cfg,
2250 struct v4l2_subdev_selection *sel,
2251 struct v4l2_rect **crops,
2252 struct v4l2_rect *comp)
2253 {
2254 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2255 unsigned int i;
2256 unsigned int binh = 1, binv = 1;
2257 int best = scaling_goodness(
2258 subdev,
2259 crops[CCS_PAD_SINK]->width, sel->r.width,
2260 crops[CCS_PAD_SINK]->height, sel->r.height, sel->flags);
2261
2262 for (i = 0; i < sensor->nbinning_subtypes; i++) {
2263 int this = scaling_goodness(
2264 subdev,
2265 crops[CCS_PAD_SINK]->width
2266 / sensor->binning_subtypes[i].horizontal,
2267 sel->r.width,
2268 crops[CCS_PAD_SINK]->height
2269 / sensor->binning_subtypes[i].vertical,
2270 sel->r.height, sel->flags);
2271
2272 if (this > best) {
2273 binh = sensor->binning_subtypes[i].horizontal;
2274 binv = sensor->binning_subtypes[i].vertical;
2275 best = this;
2276 }
2277 }
2278 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2279 sensor->binning_vertical = binv;
2280 sensor->binning_horizontal = binh;
2281 }
2282
2283 sel->r.width = (crops[CCS_PAD_SINK]->width / binh) & ~1;
2284 sel->r.height = (crops[CCS_PAD_SINK]->height / binv) & ~1;
2285 }
2286
2287 /*
2288 * Calculate best scaling ratio and mode for given output resolution.
2289 *
2290 * Try all of these: horizontal ratio, vertical ratio and smallest
2291 * size possible (horizontally).
2292 *
2293 * Also try whether horizontal scaler or full scaler gives a better
2294 * result.
2295 */
ccs_set_compose_scaler(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel,struct v4l2_rect ** crops,struct v4l2_rect * comp)2296 static void ccs_set_compose_scaler(struct v4l2_subdev *subdev,
2297 struct v4l2_subdev_pad_config *cfg,
2298 struct v4l2_subdev_selection *sel,
2299 struct v4l2_rect **crops,
2300 struct v4l2_rect *comp)
2301 {
2302 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2303 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2304 u32 min, max, a, b, max_m;
2305 u32 scale_m = CCS_LIM(sensor, SCALER_N_MIN);
2306 int mode = CCS_SCALING_MODE_HORIZONTAL;
2307 u32 try[4];
2308 u32 ntry = 0;
2309 unsigned int i;
2310 int best = INT_MIN;
2311
2312 sel->r.width = min_t(unsigned int, sel->r.width,
2313 crops[CCS_PAD_SINK]->width);
2314 sel->r.height = min_t(unsigned int, sel->r.height,
2315 crops[CCS_PAD_SINK]->height);
2316
2317 a = crops[CCS_PAD_SINK]->width
2318 * CCS_LIM(sensor, SCALER_N_MIN) / sel->r.width;
2319 b = crops[CCS_PAD_SINK]->height
2320 * CCS_LIM(sensor, SCALER_N_MIN) / sel->r.height;
2321 max_m = crops[CCS_PAD_SINK]->width
2322 * CCS_LIM(sensor, SCALER_N_MIN)
2323 / CCS_LIM(sensor, MIN_X_OUTPUT_SIZE);
2324
2325 a = clamp(a, CCS_LIM(sensor, SCALER_M_MIN),
2326 CCS_LIM(sensor, SCALER_M_MAX));
2327 b = clamp(b, CCS_LIM(sensor, SCALER_M_MIN),
2328 CCS_LIM(sensor, SCALER_M_MAX));
2329 max_m = clamp(max_m, CCS_LIM(sensor, SCALER_M_MIN),
2330 CCS_LIM(sensor, SCALER_M_MAX));
2331
2332 dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m);
2333
2334 min = min(max_m, min(a, b));
2335 max = min(max_m, max(a, b));
2336
2337 try[ntry] = min;
2338 ntry++;
2339 if (min != max) {
2340 try[ntry] = max;
2341 ntry++;
2342 }
2343 if (max != max_m) {
2344 try[ntry] = min + 1;
2345 ntry++;
2346 if (min != max) {
2347 try[ntry] = max + 1;
2348 ntry++;
2349 }
2350 }
2351
2352 for (i = 0; i < ntry; i++) {
2353 int this = scaling_goodness(
2354 subdev,
2355 crops[CCS_PAD_SINK]->width
2356 / try[i] * CCS_LIM(sensor, SCALER_N_MIN),
2357 sel->r.width,
2358 crops[CCS_PAD_SINK]->height,
2359 sel->r.height,
2360 sel->flags);
2361
2362 dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i);
2363
2364 if (this > best) {
2365 scale_m = try[i];
2366 mode = CCS_SCALING_MODE_HORIZONTAL;
2367 best = this;
2368 }
2369
2370 if (CCS_LIM(sensor, SCALING_CAPABILITY)
2371 == CCS_SCALING_CAPABILITY_HORIZONTAL)
2372 continue;
2373
2374 this = scaling_goodness(
2375 subdev, crops[CCS_PAD_SINK]->width
2376 / try[i]
2377 * CCS_LIM(sensor, SCALER_N_MIN),
2378 sel->r.width,
2379 crops[CCS_PAD_SINK]->height
2380 / try[i]
2381 * CCS_LIM(sensor, SCALER_N_MIN),
2382 sel->r.height,
2383 sel->flags);
2384
2385 if (this > best) {
2386 scale_m = try[i];
2387 mode = SMIAPP_SCALING_MODE_BOTH;
2388 best = this;
2389 }
2390 }
2391
2392 sel->r.width =
2393 (crops[CCS_PAD_SINK]->width
2394 / scale_m
2395 * CCS_LIM(sensor, SCALER_N_MIN)) & ~1;
2396 if (mode == SMIAPP_SCALING_MODE_BOTH)
2397 sel->r.height =
2398 (crops[CCS_PAD_SINK]->height
2399 / scale_m
2400 * CCS_LIM(sensor, SCALER_N_MIN))
2401 & ~1;
2402 else
2403 sel->r.height = crops[CCS_PAD_SINK]->height;
2404
2405 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2406 sensor->scale_m = scale_m;
2407 sensor->scaling_mode = mode;
2408 }
2409 }
2410 /* We're only called on source pads. This function sets scaling. */
ccs_set_compose(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2411 static int ccs_set_compose(struct v4l2_subdev *subdev,
2412 struct v4l2_subdev_pad_config *cfg,
2413 struct v4l2_subdev_selection *sel)
2414 {
2415 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2416 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2417 struct v4l2_rect *comp, *crops[CCS_PADS];
2418
2419 ccs_get_crop_compose(subdev, cfg, crops, &comp, sel->which);
2420
2421 sel->r.top = 0;
2422 sel->r.left = 0;
2423
2424 if (ssd == sensor->binner)
2425 ccs_set_compose_binner(subdev, cfg, sel, crops, comp);
2426 else
2427 ccs_set_compose_scaler(subdev, cfg, sel, crops, comp);
2428
2429 *comp = sel->r;
2430 ccs_propagate(subdev, cfg, sel->which, V4L2_SEL_TGT_COMPOSE);
2431
2432 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
2433 return ccs_pll_blanking_update(sensor);
2434
2435 return 0;
2436 }
2437
__ccs_sel_supported(struct v4l2_subdev * subdev,struct v4l2_subdev_selection * sel)2438 static int __ccs_sel_supported(struct v4l2_subdev *subdev,
2439 struct v4l2_subdev_selection *sel)
2440 {
2441 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2442 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2443
2444 /* We only implement crop in three places. */
2445 switch (sel->target) {
2446 case V4L2_SEL_TGT_CROP:
2447 case V4L2_SEL_TGT_CROP_BOUNDS:
2448 if (ssd == sensor->pixel_array && sel->pad == CCS_PA_PAD_SRC)
2449 return 0;
2450 if (ssd == sensor->src && sel->pad == CCS_PAD_SRC)
2451 return 0;
2452 if (ssd == sensor->scaler && sel->pad == CCS_PAD_SINK &&
2453 CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY)
2454 == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP)
2455 return 0;
2456 return -EINVAL;
2457 case V4L2_SEL_TGT_NATIVE_SIZE:
2458 if (ssd == sensor->pixel_array && sel->pad == CCS_PA_PAD_SRC)
2459 return 0;
2460 return -EINVAL;
2461 case V4L2_SEL_TGT_COMPOSE:
2462 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
2463 if (sel->pad == ssd->source_pad)
2464 return -EINVAL;
2465 if (ssd == sensor->binner)
2466 return 0;
2467 if (ssd == sensor->scaler && CCS_LIM(sensor, SCALING_CAPABILITY)
2468 != CCS_SCALING_CAPABILITY_NONE)
2469 return 0;
2470 fallthrough;
2471 default:
2472 return -EINVAL;
2473 }
2474 }
2475
ccs_set_crop(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2476 static int ccs_set_crop(struct v4l2_subdev *subdev,
2477 struct v4l2_subdev_pad_config *cfg,
2478 struct v4l2_subdev_selection *sel)
2479 {
2480 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2481 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2482 struct v4l2_rect *src_size, *crops[CCS_PADS];
2483 struct v4l2_rect _r;
2484
2485 ccs_get_crop_compose(subdev, cfg, crops, NULL, sel->which);
2486
2487 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2488 if (sel->pad == ssd->sink_pad)
2489 src_size = &ssd->sink_fmt;
2490 else
2491 src_size = &ssd->compose;
2492 } else {
2493 if (sel->pad == ssd->sink_pad) {
2494 _r.left = 0;
2495 _r.top = 0;
2496 _r.width = v4l2_subdev_get_try_format(subdev, cfg,
2497 sel->pad)
2498 ->width;
2499 _r.height = v4l2_subdev_get_try_format(subdev, cfg,
2500 sel->pad)
2501 ->height;
2502 src_size = &_r;
2503 } else {
2504 src_size = v4l2_subdev_get_try_compose(
2505 subdev, cfg, ssd->sink_pad);
2506 }
2507 }
2508
2509 if (ssd == sensor->src && sel->pad == CCS_PAD_SRC) {
2510 sel->r.left = 0;
2511 sel->r.top = 0;
2512 }
2513
2514 sel->r.width = min(sel->r.width, src_size->width);
2515 sel->r.height = min(sel->r.height, src_size->height);
2516
2517 sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
2518 sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
2519
2520 *crops[sel->pad] = sel->r;
2521
2522 if (ssd != sensor->pixel_array && sel->pad == CCS_PAD_SINK)
2523 ccs_propagate(subdev, cfg, sel->which, V4L2_SEL_TGT_CROP);
2524
2525 return 0;
2526 }
2527
ccs_get_native_size(struct ccs_subdev * ssd,struct v4l2_rect * r)2528 static void ccs_get_native_size(struct ccs_subdev *ssd, struct v4l2_rect *r)
2529 {
2530 r->top = 0;
2531 r->left = 0;
2532 r->width = CCS_LIM(ssd->sensor, X_ADDR_MAX) + 1;
2533 r->height = CCS_LIM(ssd->sensor, Y_ADDR_MAX) + 1;
2534 }
2535
__ccs_get_selection(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2536 static int __ccs_get_selection(struct v4l2_subdev *subdev,
2537 struct v4l2_subdev_pad_config *cfg,
2538 struct v4l2_subdev_selection *sel)
2539 {
2540 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2541 struct ccs_subdev *ssd = to_ccs_subdev(subdev);
2542 struct v4l2_rect *comp, *crops[CCS_PADS];
2543 struct v4l2_rect sink_fmt;
2544 int ret;
2545
2546 ret = __ccs_sel_supported(subdev, sel);
2547 if (ret)
2548 return ret;
2549
2550 ccs_get_crop_compose(subdev, cfg, crops, &comp, sel->which);
2551
2552 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2553 sink_fmt = ssd->sink_fmt;
2554 } else {
2555 struct v4l2_mbus_framefmt *fmt =
2556 v4l2_subdev_get_try_format(subdev, cfg, ssd->sink_pad);
2557
2558 sink_fmt.left = 0;
2559 sink_fmt.top = 0;
2560 sink_fmt.width = fmt->width;
2561 sink_fmt.height = fmt->height;
2562 }
2563
2564 switch (sel->target) {
2565 case V4L2_SEL_TGT_CROP_BOUNDS:
2566 case V4L2_SEL_TGT_NATIVE_SIZE:
2567 if (ssd == sensor->pixel_array)
2568 ccs_get_native_size(ssd, &sel->r);
2569 else if (sel->pad == ssd->sink_pad)
2570 sel->r = sink_fmt;
2571 else
2572 sel->r = *comp;
2573 break;
2574 case V4L2_SEL_TGT_CROP:
2575 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
2576 sel->r = *crops[sel->pad];
2577 break;
2578 case V4L2_SEL_TGT_COMPOSE:
2579 sel->r = *comp;
2580 break;
2581 }
2582
2583 return 0;
2584 }
2585
ccs_get_selection(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2586 static int ccs_get_selection(struct v4l2_subdev *subdev,
2587 struct v4l2_subdev_pad_config *cfg,
2588 struct v4l2_subdev_selection *sel)
2589 {
2590 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2591 int rval;
2592
2593 mutex_lock(&sensor->mutex);
2594 rval = __ccs_get_selection(subdev, cfg, sel);
2595 mutex_unlock(&sensor->mutex);
2596
2597 return rval;
2598 }
2599
ccs_set_selection(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2600 static int ccs_set_selection(struct v4l2_subdev *subdev,
2601 struct v4l2_subdev_pad_config *cfg,
2602 struct v4l2_subdev_selection *sel)
2603 {
2604 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2605 int ret;
2606
2607 ret = __ccs_sel_supported(subdev, sel);
2608 if (ret)
2609 return ret;
2610
2611 mutex_lock(&sensor->mutex);
2612
2613 sel->r.left = max(0, sel->r.left & ~1);
2614 sel->r.top = max(0, sel->r.top & ~1);
2615 sel->r.width = CCS_ALIGN_DIM(sel->r.width, sel->flags);
2616 sel->r.height = CCS_ALIGN_DIM(sel->r.height, sel->flags);
2617
2618 sel->r.width = max_t(unsigned int, CCS_LIM(sensor, MIN_X_OUTPUT_SIZE),
2619 sel->r.width);
2620 sel->r.height = max_t(unsigned int, CCS_LIM(sensor, MIN_Y_OUTPUT_SIZE),
2621 sel->r.height);
2622
2623 switch (sel->target) {
2624 case V4L2_SEL_TGT_CROP:
2625 ret = ccs_set_crop(subdev, cfg, sel);
2626 break;
2627 case V4L2_SEL_TGT_COMPOSE:
2628 ret = ccs_set_compose(subdev, cfg, sel);
2629 break;
2630 default:
2631 ret = -EINVAL;
2632 }
2633
2634 mutex_unlock(&sensor->mutex);
2635 return ret;
2636 }
2637
ccs_get_skip_frames(struct v4l2_subdev * subdev,u32 * frames)2638 static int ccs_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
2639 {
2640 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2641
2642 *frames = sensor->frame_skip;
2643 return 0;
2644 }
2645
ccs_get_skip_top_lines(struct v4l2_subdev * subdev,u32 * lines)2646 static int ccs_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines)
2647 {
2648 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2649
2650 *lines = sensor->image_start;
2651
2652 return 0;
2653 }
2654
2655 /* -----------------------------------------------------------------------------
2656 * sysfs attributes
2657 */
2658
2659 static ssize_t
ccs_sysfs_nvm_read(struct device * dev,struct device_attribute * attr,char * buf)2660 ccs_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
2661 char *buf)
2662 {
2663 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2664 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2665 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2666 int rval;
2667
2668 if (!sensor->dev_init_done)
2669 return -EBUSY;
2670
2671 rval = ccs_pm_get_init(sensor);
2672 if (rval < 0)
2673 return -ENODEV;
2674
2675 rval = ccs_read_nvm(sensor, buf, PAGE_SIZE);
2676 if (rval < 0) {
2677 pm_runtime_put(&client->dev);
2678 dev_err(&client->dev, "nvm read failed\n");
2679 return -ENODEV;
2680 }
2681
2682 pm_runtime_mark_last_busy(&client->dev);
2683 pm_runtime_put_autosuspend(&client->dev);
2684
2685 /*
2686 * NVM is still way below a PAGE_SIZE, so we can safely
2687 * assume this for now.
2688 */
2689 return rval;
2690 }
2691 static DEVICE_ATTR(nvm, S_IRUGO, ccs_sysfs_nvm_read, NULL);
2692
2693 static ssize_t
ccs_sysfs_ident_read(struct device * dev,struct device_attribute * attr,char * buf)2694 ccs_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
2695 char *buf)
2696 {
2697 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2698 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2699 struct ccs_module_info *minfo = &sensor->minfo;
2700
2701 if (minfo->mipi_manufacturer_id)
2702 return snprintf(buf, PAGE_SIZE, "%4.4x%4.4x%2.2x\n",
2703 minfo->mipi_manufacturer_id, minfo->model_id,
2704 minfo->revision_number) + 1;
2705 else
2706 return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
2707 minfo->smia_manufacturer_id, minfo->model_id,
2708 minfo->revision_number) + 1;
2709 }
2710
2711 static DEVICE_ATTR(ident, S_IRUGO, ccs_sysfs_ident_read, NULL);
2712
2713 /* -----------------------------------------------------------------------------
2714 * V4L2 subdev core operations
2715 */
2716
ccs_identify_module(struct ccs_sensor * sensor)2717 static int ccs_identify_module(struct ccs_sensor *sensor)
2718 {
2719 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2720 struct ccs_module_info *minfo = &sensor->minfo;
2721 unsigned int i;
2722 u32 rev;
2723 int rval = 0;
2724
2725 /* Module info */
2726 rval = ccs_read(sensor, MODULE_MANUFACTURER_ID,
2727 &minfo->mipi_manufacturer_id);
2728 if (!rval && !minfo->mipi_manufacturer_id)
2729 rval = ccs_read_addr_8only(sensor,
2730 SMIAPP_REG_U8_MANUFACTURER_ID,
2731 &minfo->smia_manufacturer_id);
2732 if (!rval)
2733 rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_MODEL_ID,
2734 &minfo->model_id);
2735 if (!rval)
2736 rval = ccs_read_addr_8only(sensor,
2737 CCS_R_MODULE_REVISION_NUMBER_MAJOR,
2738 &rev);
2739 if (!rval) {
2740 rval = ccs_read_addr_8only(sensor,
2741 CCS_R_MODULE_REVISION_NUMBER_MINOR,
2742 &minfo->revision_number);
2743 minfo->revision_number |= rev << 8;
2744 }
2745 if (!rval)
2746 rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_DATE_YEAR,
2747 &minfo->module_year);
2748 if (!rval)
2749 rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_DATE_MONTH,
2750 &minfo->module_month);
2751 if (!rval)
2752 rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_DATE_DAY,
2753 &minfo->module_day);
2754
2755 /* Sensor info */
2756 if (!rval)
2757 rval = ccs_read(sensor, SENSOR_MANUFACTURER_ID,
2758 &minfo->sensor_mipi_manufacturer_id);
2759 if (!rval && !minfo->sensor_mipi_manufacturer_id)
2760 rval = ccs_read_addr_8only(sensor,
2761 CCS_R_SENSOR_MANUFACTURER_ID,
2762 &minfo->sensor_smia_manufacturer_id);
2763 if (!rval)
2764 rval = ccs_read_addr_8only(sensor,
2765 CCS_R_SENSOR_MODEL_ID,
2766 &minfo->sensor_model_id);
2767 if (!rval)
2768 rval = ccs_read_addr_8only(sensor,
2769 CCS_R_SENSOR_REVISION_NUMBER,
2770 &minfo->sensor_revision_number);
2771 if (!rval)
2772 rval = ccs_read_addr_8only(sensor,
2773 CCS_R_SENSOR_FIRMWARE_VERSION,
2774 &minfo->sensor_firmware_version);
2775
2776 /* SMIA */
2777 if (!rval)
2778 rval = ccs_read(sensor, MIPI_CCS_VERSION, &minfo->ccs_version);
2779 if (!rval && !minfo->ccs_version)
2780 rval = ccs_read_addr_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
2781 &minfo->smia_version);
2782 if (!rval && !minfo->ccs_version)
2783 rval = ccs_read_addr_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
2784 &minfo->smiapp_version);
2785
2786 if (rval) {
2787 dev_err(&client->dev, "sensor detection failed\n");
2788 return -ENODEV;
2789 }
2790
2791 if (minfo->mipi_manufacturer_id)
2792 dev_dbg(&client->dev, "MIPI CCS module 0x%4.4x-0x%4.4x\n",
2793 minfo->mipi_manufacturer_id, minfo->model_id);
2794 else
2795 dev_dbg(&client->dev, "SMIA module 0x%2.2x-0x%4.4x\n",
2796 minfo->smia_manufacturer_id, minfo->model_id);
2797
2798 dev_dbg(&client->dev,
2799 "module revision 0x%4.4x date %2.2d-%2.2d-%2.2d\n",
2800 minfo->revision_number, minfo->module_year, minfo->module_month,
2801 minfo->module_day);
2802
2803 if (minfo->sensor_mipi_manufacturer_id)
2804 dev_dbg(&client->dev, "MIPI CCS sensor 0x%4.4x-0x%4.4x\n",
2805 minfo->sensor_mipi_manufacturer_id,
2806 minfo->sensor_model_id);
2807 else
2808 dev_dbg(&client->dev, "SMIA sensor 0x%2.2x-0x%4.4x\n",
2809 minfo->sensor_smia_manufacturer_id,
2810 minfo->sensor_model_id);
2811
2812 dev_dbg(&client->dev,
2813 "sensor revision 0x%2.2x firmware version 0x%2.2x\n",
2814 minfo->sensor_revision_number, minfo->sensor_firmware_version);
2815
2816 if (minfo->ccs_version) {
2817 dev_dbg(&client->dev, "MIPI CCS version %u.%u",
2818 (minfo->ccs_version & CCS_MIPI_CCS_VERSION_MAJOR_MASK)
2819 >> CCS_MIPI_CCS_VERSION_MAJOR_SHIFT,
2820 (minfo->ccs_version & CCS_MIPI_CCS_VERSION_MINOR_MASK));
2821 minfo->name = CCS_NAME;
2822 } else {
2823 dev_dbg(&client->dev,
2824 "smia version %2.2d smiapp version %2.2d\n",
2825 minfo->smia_version, minfo->smiapp_version);
2826 minfo->name = SMIAPP_NAME;
2827 }
2828
2829 /*
2830 * Some modules have bad data in the lvalues below. Hope the
2831 * rvalues have better stuff. The lvalues are module
2832 * parameters whereas the rvalues are sensor parameters.
2833 */
2834 if (minfo->sensor_smia_manufacturer_id &&
2835 !minfo->smia_manufacturer_id && !minfo->model_id) {
2836 minfo->smia_manufacturer_id =
2837 minfo->sensor_smia_manufacturer_id;
2838 minfo->model_id = minfo->sensor_model_id;
2839 minfo->revision_number = minfo->sensor_revision_number;
2840 }
2841
2842 for (i = 0; i < ARRAY_SIZE(ccs_module_idents); i++) {
2843 if (ccs_module_idents[i].mipi_manufacturer_id &&
2844 ccs_module_idents[i].mipi_manufacturer_id
2845 != minfo->mipi_manufacturer_id)
2846 continue;
2847 if (ccs_module_idents[i].smia_manufacturer_id &&
2848 ccs_module_idents[i].smia_manufacturer_id
2849 != minfo->smia_manufacturer_id)
2850 continue;
2851 if (ccs_module_idents[i].model_id != minfo->model_id)
2852 continue;
2853 if (ccs_module_idents[i].flags
2854 & CCS_MODULE_IDENT_FLAG_REV_LE) {
2855 if (ccs_module_idents[i].revision_number_major
2856 < (minfo->revision_number >> 8))
2857 continue;
2858 } else {
2859 if (ccs_module_idents[i].revision_number_major
2860 != (minfo->revision_number >> 8))
2861 continue;
2862 }
2863
2864 minfo->name = ccs_module_idents[i].name;
2865 minfo->quirk = ccs_module_idents[i].quirk;
2866 break;
2867 }
2868
2869 if (i >= ARRAY_SIZE(ccs_module_idents))
2870 dev_warn(&client->dev,
2871 "no quirks for this module; let's hope it's fully compliant\n");
2872
2873 dev_dbg(&client->dev, "the sensor is called %s\n", minfo->name);
2874
2875 return 0;
2876 }
2877
2878 static const struct v4l2_subdev_ops ccs_ops;
2879 static const struct v4l2_subdev_internal_ops ccs_internal_ops;
2880 static const struct media_entity_operations ccs_entity_ops;
2881
ccs_register_subdev(struct ccs_sensor * sensor,struct ccs_subdev * ssd,struct ccs_subdev * sink_ssd,u16 source_pad,u16 sink_pad,u32 link_flags)2882 static int ccs_register_subdev(struct ccs_sensor *sensor,
2883 struct ccs_subdev *ssd,
2884 struct ccs_subdev *sink_ssd,
2885 u16 source_pad, u16 sink_pad, u32 link_flags)
2886 {
2887 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2888 int rval;
2889
2890 if (!sink_ssd)
2891 return 0;
2892
2893 rval = media_entity_pads_init(&ssd->sd.entity, ssd->npads, ssd->pads);
2894 if (rval) {
2895 dev_err(&client->dev, "media_entity_pads_init failed\n");
2896 return rval;
2897 }
2898
2899 rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev, &ssd->sd);
2900 if (rval) {
2901 dev_err(&client->dev, "v4l2_device_register_subdev failed\n");
2902 return rval;
2903 }
2904
2905 rval = media_create_pad_link(&ssd->sd.entity, source_pad,
2906 &sink_ssd->sd.entity, sink_pad,
2907 link_flags);
2908 if (rval) {
2909 dev_err(&client->dev, "media_create_pad_link failed\n");
2910 v4l2_device_unregister_subdev(&ssd->sd);
2911 return rval;
2912 }
2913
2914 return 0;
2915 }
2916
ccs_unregistered(struct v4l2_subdev * subdev)2917 static void ccs_unregistered(struct v4l2_subdev *subdev)
2918 {
2919 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2920 unsigned int i;
2921
2922 for (i = 1; i < sensor->ssds_used; i++)
2923 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
2924 }
2925
ccs_registered(struct v4l2_subdev * subdev)2926 static int ccs_registered(struct v4l2_subdev *subdev)
2927 {
2928 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
2929 int rval;
2930
2931 if (sensor->scaler) {
2932 rval = ccs_register_subdev(sensor, sensor->binner,
2933 sensor->scaler,
2934 CCS_PAD_SRC, CCS_PAD_SINK,
2935 MEDIA_LNK_FL_ENABLED |
2936 MEDIA_LNK_FL_IMMUTABLE);
2937 if (rval < 0)
2938 return rval;
2939 }
2940
2941 rval = ccs_register_subdev(sensor, sensor->pixel_array, sensor->binner,
2942 CCS_PA_PAD_SRC, CCS_PAD_SINK,
2943 MEDIA_LNK_FL_ENABLED |
2944 MEDIA_LNK_FL_IMMUTABLE);
2945 if (rval)
2946 goto out_err;
2947
2948 return 0;
2949
2950 out_err:
2951 ccs_unregistered(subdev);
2952
2953 return rval;
2954 }
2955
ccs_cleanup(struct ccs_sensor * sensor)2956 static void ccs_cleanup(struct ccs_sensor *sensor)
2957 {
2958 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2959
2960 device_remove_file(&client->dev, &dev_attr_nvm);
2961 device_remove_file(&client->dev, &dev_attr_ident);
2962
2963 ccs_free_controls(sensor);
2964 }
2965
ccs_create_subdev(struct ccs_sensor * sensor,struct ccs_subdev * ssd,const char * name,unsigned short num_pads,u32 function)2966 static void ccs_create_subdev(struct ccs_sensor *sensor,
2967 struct ccs_subdev *ssd, const char *name,
2968 unsigned short num_pads, u32 function)
2969 {
2970 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2971
2972 if (!ssd)
2973 return;
2974
2975 if (ssd != sensor->src)
2976 v4l2_subdev_init(&ssd->sd, &ccs_ops);
2977
2978 ssd->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2979 ssd->sd.entity.function = function;
2980 ssd->sensor = sensor;
2981
2982 ssd->npads = num_pads;
2983 ssd->source_pad = num_pads - 1;
2984
2985 v4l2_i2c_subdev_set_name(&ssd->sd, client, sensor->minfo.name, name);
2986
2987 ccs_get_native_size(ssd, &ssd->sink_fmt);
2988
2989 ssd->compose.width = ssd->sink_fmt.width;
2990 ssd->compose.height = ssd->sink_fmt.height;
2991 ssd->crop[ssd->source_pad] = ssd->compose;
2992 ssd->pads[ssd->source_pad].flags = MEDIA_PAD_FL_SOURCE;
2993 if (ssd != sensor->pixel_array) {
2994 ssd->crop[ssd->sink_pad] = ssd->compose;
2995 ssd->pads[ssd->sink_pad].flags = MEDIA_PAD_FL_SINK;
2996 }
2997
2998 ssd->sd.entity.ops = &ccs_entity_ops;
2999
3000 if (ssd == sensor->src)
3001 return;
3002
3003 ssd->sd.internal_ops = &ccs_internal_ops;
3004 ssd->sd.owner = THIS_MODULE;
3005 ssd->sd.dev = &client->dev;
3006 v4l2_set_subdevdata(&ssd->sd, client);
3007 }
3008
ccs_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)3009 static int ccs_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
3010 {
3011 struct ccs_subdev *ssd = to_ccs_subdev(sd);
3012 struct ccs_sensor *sensor = ssd->sensor;
3013 unsigned int i;
3014
3015 mutex_lock(&sensor->mutex);
3016
3017 for (i = 0; i < ssd->npads; i++) {
3018 struct v4l2_mbus_framefmt *try_fmt =
3019 v4l2_subdev_get_try_format(sd, fh->pad, i);
3020 struct v4l2_rect *try_crop =
3021 v4l2_subdev_get_try_crop(sd, fh->pad, i);
3022 struct v4l2_rect *try_comp;
3023
3024 ccs_get_native_size(ssd, try_crop);
3025
3026 try_fmt->width = try_crop->width;
3027 try_fmt->height = try_crop->height;
3028 try_fmt->code = sensor->internal_csi_format->code;
3029 try_fmt->field = V4L2_FIELD_NONE;
3030
3031 if (ssd != sensor->pixel_array)
3032 continue;
3033
3034 try_comp = v4l2_subdev_get_try_compose(sd, fh->pad, i);
3035 *try_comp = *try_crop;
3036 }
3037
3038 mutex_unlock(&sensor->mutex);
3039
3040 return 0;
3041 }
3042
3043 static const struct v4l2_subdev_video_ops ccs_video_ops = {
3044 .s_stream = ccs_set_stream,
3045 };
3046
3047 static const struct v4l2_subdev_pad_ops ccs_pad_ops = {
3048 .enum_mbus_code = ccs_enum_mbus_code,
3049 .get_fmt = ccs_get_format,
3050 .set_fmt = ccs_set_format,
3051 .get_selection = ccs_get_selection,
3052 .set_selection = ccs_set_selection,
3053 };
3054
3055 static const struct v4l2_subdev_sensor_ops ccs_sensor_ops = {
3056 .g_skip_frames = ccs_get_skip_frames,
3057 .g_skip_top_lines = ccs_get_skip_top_lines,
3058 };
3059
3060 static const struct v4l2_subdev_ops ccs_ops = {
3061 .video = &ccs_video_ops,
3062 .pad = &ccs_pad_ops,
3063 .sensor = &ccs_sensor_ops,
3064 };
3065
3066 static const struct media_entity_operations ccs_entity_ops = {
3067 .link_validate = v4l2_subdev_link_validate,
3068 };
3069
3070 static const struct v4l2_subdev_internal_ops ccs_internal_src_ops = {
3071 .registered = ccs_registered,
3072 .unregistered = ccs_unregistered,
3073 .open = ccs_open,
3074 };
3075
3076 static const struct v4l2_subdev_internal_ops ccs_internal_ops = {
3077 .open = ccs_open,
3078 };
3079
3080 /* -----------------------------------------------------------------------------
3081 * I2C Driver
3082 */
3083
ccs_suspend(struct device * dev)3084 static int __maybe_unused ccs_suspend(struct device *dev)
3085 {
3086 struct i2c_client *client = to_i2c_client(dev);
3087 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
3088 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
3089 bool streaming = sensor->streaming;
3090 int rval;
3091
3092 rval = pm_runtime_get_sync(dev);
3093 if (rval < 0) {
3094 pm_runtime_put_noidle(dev);
3095
3096 return -EAGAIN;
3097 }
3098
3099 if (sensor->streaming)
3100 ccs_stop_streaming(sensor);
3101
3102 /* save state for resume */
3103 sensor->streaming = streaming;
3104
3105 return 0;
3106 }
3107
ccs_resume(struct device * dev)3108 static int __maybe_unused ccs_resume(struct device *dev)
3109 {
3110 struct i2c_client *client = to_i2c_client(dev);
3111 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
3112 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
3113 int rval = 0;
3114
3115 pm_runtime_put(dev);
3116
3117 if (sensor->streaming)
3118 rval = ccs_start_streaming(sensor);
3119
3120 return rval;
3121 }
3122
ccs_get_hwconfig(struct ccs_sensor * sensor,struct device * dev)3123 static int ccs_get_hwconfig(struct ccs_sensor *sensor, struct device *dev)
3124 {
3125 struct ccs_hwconfig *hwcfg = &sensor->hwcfg;
3126 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_UNKNOWN };
3127 struct fwnode_handle *ep;
3128 struct fwnode_handle *fwnode = dev_fwnode(dev);
3129 u32 rotation;
3130 int i;
3131 int rval;
3132
3133 ep = fwnode_graph_get_endpoint_by_id(fwnode, 0, 0,
3134 FWNODE_GRAPH_ENDPOINT_NEXT);
3135 if (!ep)
3136 return -ENODEV;
3137
3138 /*
3139 * Note that we do need to rely on detecting the bus type between CSI-2
3140 * D-PHY and CCP2 as the old bindings did not require it.
3141 */
3142 rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
3143 if (rval)
3144 goto out_err;
3145
3146 switch (bus_cfg.bus_type) {
3147 case V4L2_MBUS_CSI2_DPHY:
3148 hwcfg->csi_signalling_mode = CCS_CSI_SIGNALING_MODE_CSI_2_DPHY;
3149 hwcfg->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes;
3150 break;
3151 case V4L2_MBUS_CSI2_CPHY:
3152 hwcfg->csi_signalling_mode = CCS_CSI_SIGNALING_MODE_CSI_2_CPHY;
3153 hwcfg->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes;
3154 break;
3155 case V4L2_MBUS_CSI1:
3156 case V4L2_MBUS_CCP2:
3157 hwcfg->csi_signalling_mode = (bus_cfg.bus.mipi_csi1.strobe) ?
3158 SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_STROBE :
3159 SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_CLOCK;
3160 hwcfg->lanes = 1;
3161 break;
3162 default:
3163 dev_err(dev, "unsupported bus %u\n", bus_cfg.bus_type);
3164 rval = -EINVAL;
3165 goto out_err;
3166 }
3167
3168 dev_dbg(dev, "lanes %u\n", hwcfg->lanes);
3169
3170 rval = fwnode_property_read_u32(fwnode, "rotation", &rotation);
3171 if (!rval) {
3172 switch (rotation) {
3173 case 180:
3174 hwcfg->module_board_orient =
3175 CCS_MODULE_BOARD_ORIENT_180;
3176 fallthrough;
3177 case 0:
3178 break;
3179 default:
3180 dev_err(dev, "invalid rotation %u\n", rotation);
3181 rval = -EINVAL;
3182 goto out_err;
3183 }
3184 }
3185
3186 rval = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
3187 &hwcfg->ext_clk);
3188 if (rval)
3189 dev_info(dev, "can't get clock-frequency\n");
3190
3191 dev_dbg(dev, "clk %d, mode %d\n", hwcfg->ext_clk,
3192 hwcfg->csi_signalling_mode);
3193
3194 if (!bus_cfg.nr_of_link_frequencies) {
3195 dev_warn(dev, "no link frequencies defined\n");
3196 rval = -EINVAL;
3197 goto out_err;
3198 }
3199
3200 hwcfg->op_sys_clock = devm_kcalloc(
3201 dev, bus_cfg.nr_of_link_frequencies + 1 /* guardian */,
3202 sizeof(*hwcfg->op_sys_clock), GFP_KERNEL);
3203 if (!hwcfg->op_sys_clock) {
3204 rval = -ENOMEM;
3205 goto out_err;
3206 }
3207
3208 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
3209 hwcfg->op_sys_clock[i] = bus_cfg.link_frequencies[i];
3210 dev_dbg(dev, "freq %d: %lld\n", i, hwcfg->op_sys_clock[i]);
3211 }
3212
3213 v4l2_fwnode_endpoint_free(&bus_cfg);
3214 fwnode_handle_put(ep);
3215
3216 return 0;
3217
3218 out_err:
3219 v4l2_fwnode_endpoint_free(&bus_cfg);
3220 fwnode_handle_put(ep);
3221
3222 return rval;
3223 }
3224
ccs_probe(struct i2c_client * client)3225 static int ccs_probe(struct i2c_client *client)
3226 {
3227 struct ccs_sensor *sensor;
3228 const struct firmware *fw;
3229 char filename[40];
3230 unsigned int i;
3231 int rval;
3232
3233 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
3234 if (sensor == NULL)
3235 return -ENOMEM;
3236
3237 rval = ccs_get_hwconfig(sensor, &client->dev);
3238 if (rval)
3239 return rval;
3240
3241 sensor->src = &sensor->ssds[sensor->ssds_used];
3242
3243 v4l2_i2c_subdev_init(&sensor->src->sd, client, &ccs_ops);
3244 sensor->src->sd.internal_ops = &ccs_internal_src_ops;
3245
3246 sensor->regulators = devm_kcalloc(&client->dev,
3247 ARRAY_SIZE(ccs_regulators),
3248 sizeof(*sensor->regulators),
3249 GFP_KERNEL);
3250 if (!sensor->regulators)
3251 return -ENOMEM;
3252
3253 for (i = 0; i < ARRAY_SIZE(ccs_regulators); i++)
3254 sensor->regulators[i].supply = ccs_regulators[i];
3255
3256 rval = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(ccs_regulators),
3257 sensor->regulators);
3258 if (rval) {
3259 dev_err(&client->dev, "could not get regulators\n");
3260 return rval;
3261 }
3262
3263 sensor->ext_clk = devm_clk_get(&client->dev, NULL);
3264 if (PTR_ERR(sensor->ext_clk) == -ENOENT) {
3265 dev_info(&client->dev, "no clock defined, continuing...\n");
3266 sensor->ext_clk = NULL;
3267 } else if (IS_ERR(sensor->ext_clk)) {
3268 dev_err(&client->dev, "could not get clock (%ld)\n",
3269 PTR_ERR(sensor->ext_clk));
3270 return -EPROBE_DEFER;
3271 }
3272
3273 if (sensor->ext_clk) {
3274 if (sensor->hwcfg.ext_clk) {
3275 unsigned long rate;
3276
3277 rval = clk_set_rate(sensor->ext_clk,
3278 sensor->hwcfg.ext_clk);
3279 if (rval < 0) {
3280 dev_err(&client->dev,
3281 "unable to set clock freq to %u\n",
3282 sensor->hwcfg.ext_clk);
3283 return rval;
3284 }
3285
3286 rate = clk_get_rate(sensor->ext_clk);
3287 if (rate != sensor->hwcfg.ext_clk) {
3288 dev_err(&client->dev,
3289 "can't set clock freq, asked for %u but got %lu\n",
3290 sensor->hwcfg.ext_clk, rate);
3291 return -EINVAL;
3292 }
3293 } else {
3294 sensor->hwcfg.ext_clk = clk_get_rate(sensor->ext_clk);
3295 dev_dbg(&client->dev, "obtained clock freq %u\n",
3296 sensor->hwcfg.ext_clk);
3297 }
3298 } else if (sensor->hwcfg.ext_clk) {
3299 dev_dbg(&client->dev, "assuming clock freq %u\n",
3300 sensor->hwcfg.ext_clk);
3301 } else {
3302 dev_err(&client->dev, "unable to obtain clock freq\n");
3303 return -EINVAL;
3304 }
3305
3306 if (!sensor->hwcfg.ext_clk) {
3307 dev_err(&client->dev, "cannot work with xclk frequency 0\n");
3308 return -EINVAL;
3309 }
3310
3311 sensor->reset = devm_gpiod_get_optional(&client->dev, "reset",
3312 GPIOD_OUT_HIGH);
3313 if (IS_ERR(sensor->reset))
3314 return PTR_ERR(sensor->reset);
3315 /* Support old users that may have used "xshutdown" property. */
3316 if (!sensor->reset)
3317 sensor->xshutdown = devm_gpiod_get_optional(&client->dev,
3318 "xshutdown",
3319 GPIOD_OUT_LOW);
3320 if (IS_ERR(sensor->xshutdown))
3321 return PTR_ERR(sensor->xshutdown);
3322
3323 rval = ccs_power_on(&client->dev);
3324 if (rval < 0)
3325 return rval;
3326
3327 mutex_init(&sensor->mutex);
3328
3329 rval = ccs_identify_module(sensor);
3330 if (rval) {
3331 rval = -ENODEV;
3332 goto out_power_off;
3333 }
3334
3335 rval = snprintf(filename, sizeof(filename),
3336 "ccs/ccs-sensor-%4.4x-%4.4x-%4.4x.fw",
3337 sensor->minfo.sensor_mipi_manufacturer_id,
3338 sensor->minfo.sensor_model_id,
3339 sensor->minfo.sensor_revision_number);
3340 if (rval >= sizeof(filename)) {
3341 rval = -ENOMEM;
3342 goto out_power_off;
3343 }
3344
3345 rval = request_firmware(&fw, filename, &client->dev);
3346 if (!rval) {
3347 ccs_data_parse(&sensor->sdata, fw->data, fw->size, &client->dev,
3348 true);
3349 release_firmware(fw);
3350 }
3351
3352 rval = snprintf(filename, sizeof(filename),
3353 "ccs/ccs-module-%4.4x-%4.4x-%4.4x.fw",
3354 sensor->minfo.mipi_manufacturer_id,
3355 sensor->minfo.model_id,
3356 sensor->minfo.revision_number);
3357 if (rval >= sizeof(filename)) {
3358 rval = -ENOMEM;
3359 goto out_release_sdata;
3360 }
3361
3362 rval = request_firmware(&fw, filename, &client->dev);
3363 if (!rval) {
3364 ccs_data_parse(&sensor->mdata, fw->data, fw->size, &client->dev,
3365 true);
3366 release_firmware(fw);
3367 }
3368
3369 rval = ccs_read_all_limits(sensor);
3370 if (rval)
3371 goto out_release_mdata;
3372
3373 rval = ccs_read_frame_fmt(sensor);
3374 if (rval) {
3375 rval = -ENODEV;
3376 goto out_free_ccs_limits;
3377 }
3378
3379 rval = ccs_update_phy_ctrl(sensor);
3380 if (rval < 0)
3381 goto out_free_ccs_limits;
3382
3383 /*
3384 * Handle Sensor Module orientation on the board.
3385 *
3386 * The application of H-FLIP and V-FLIP on the sensor is modified by
3387 * the sensor orientation on the board.
3388 *
3389 * For CCS_BOARD_SENSOR_ORIENT_180 the default behaviour is to set
3390 * both H-FLIP and V-FLIP for normal operation which also implies
3391 * that a set/unset operation for user space HFLIP and VFLIP v4l2
3392 * controls will need to be internally inverted.
3393 *
3394 * Rotation also changes the bayer pattern.
3395 */
3396 if (sensor->hwcfg.module_board_orient ==
3397 CCS_MODULE_BOARD_ORIENT_180)
3398 sensor->hvflip_inv_mask =
3399 CCS_IMAGE_ORIENTATION_HORIZONTAL_MIRROR |
3400 CCS_IMAGE_ORIENTATION_VERTICAL_FLIP;
3401
3402 rval = ccs_call_quirk(sensor, limits);
3403 if (rval) {
3404 dev_err(&client->dev, "limits quirks failed\n");
3405 goto out_free_ccs_limits;
3406 }
3407
3408 if (CCS_LIM(sensor, BINNING_CAPABILITY)) {
3409 sensor->nbinning_subtypes =
3410 min_t(u8, CCS_LIM(sensor, BINNING_SUB_TYPES),
3411 CCS_LIM_BINNING_SUB_TYPE_MAX_N);
3412
3413 for (i = 0; i < sensor->nbinning_subtypes; i++) {
3414 sensor->binning_subtypes[i].horizontal =
3415 CCS_LIM_AT(sensor, BINNING_SUB_TYPE, i) >>
3416 CCS_BINNING_SUB_TYPE_COLUMN_SHIFT;
3417 sensor->binning_subtypes[i].vertical =
3418 CCS_LIM_AT(sensor, BINNING_SUB_TYPE, i) &
3419 CCS_BINNING_SUB_TYPE_ROW_MASK;
3420
3421 dev_dbg(&client->dev, "binning %xx%x\n",
3422 sensor->binning_subtypes[i].horizontal,
3423 sensor->binning_subtypes[i].vertical);
3424 }
3425 }
3426 sensor->binning_horizontal = 1;
3427 sensor->binning_vertical = 1;
3428
3429 if (device_create_file(&client->dev, &dev_attr_ident) != 0) {
3430 dev_err(&client->dev, "sysfs ident entry creation failed\n");
3431 rval = -ENOENT;
3432 goto out_free_ccs_limits;
3433 }
3434
3435 if (sensor->minfo.smiapp_version &&
3436 CCS_LIM(sensor, DATA_TRANSFER_IF_CAPABILITY) &
3437 CCS_DATA_TRANSFER_IF_CAPABILITY_SUPPORTED) {
3438 if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
3439 dev_err(&client->dev, "sysfs nvm entry failed\n");
3440 rval = -EBUSY;
3441 goto out_cleanup;
3442 }
3443 }
3444
3445 if (!CCS_LIM(sensor, MIN_OP_SYS_CLK_DIV) ||
3446 !CCS_LIM(sensor, MAX_OP_SYS_CLK_DIV) ||
3447 !CCS_LIM(sensor, MIN_OP_PIX_CLK_DIV) ||
3448 !CCS_LIM(sensor, MAX_OP_PIX_CLK_DIV)) {
3449 /* No OP clock branch */
3450 sensor->pll.flags |= CCS_PLL_FLAG_NO_OP_CLOCKS;
3451 } else if (CCS_LIM(sensor, SCALING_CAPABILITY)
3452 != CCS_SCALING_CAPABILITY_NONE ||
3453 CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY)
3454 == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
3455 /* We have a scaler or digital crop. */
3456 sensor->scaler = &sensor->ssds[sensor->ssds_used];
3457 sensor->ssds_used++;
3458 }
3459 sensor->binner = &sensor->ssds[sensor->ssds_used];
3460 sensor->ssds_used++;
3461 sensor->pixel_array = &sensor->ssds[sensor->ssds_used];
3462 sensor->ssds_used++;
3463
3464 sensor->scale_m = CCS_LIM(sensor, SCALER_N_MIN);
3465
3466 /* prepare PLL configuration input values */
3467 sensor->pll.bus_type = CCS_PLL_BUS_TYPE_CSI2_DPHY;
3468 sensor->pll.csi2.lanes = sensor->hwcfg.lanes;
3469 if (CCS_LIM(sensor, CLOCK_CALCULATION) &
3470 CCS_CLOCK_CALCULATION_LANE_SPEED) {
3471 sensor->pll.flags |= CCS_PLL_FLAG_LANE_SPEED_MODEL;
3472 if (CCS_LIM(sensor, CLOCK_CALCULATION) &
3473 CCS_CLOCK_CALCULATION_LINK_DECOUPLED) {
3474 sensor->pll.vt_lanes =
3475 CCS_LIM(sensor, NUM_OF_VT_LANES) + 1;
3476 sensor->pll.op_lanes =
3477 CCS_LIM(sensor, NUM_OF_OP_LANES) + 1;
3478 sensor->pll.flags |= CCS_PLL_FLAG_LINK_DECOUPLED;
3479 } else {
3480 sensor->pll.vt_lanes = sensor->pll.csi2.lanes;
3481 sensor->pll.op_lanes = sensor->pll.csi2.lanes;
3482 }
3483 }
3484 if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) &
3485 CCS_CLOCK_TREE_PLL_CAPABILITY_EXT_DIVIDER)
3486 sensor->pll.flags |= CCS_PLL_FLAG_EXT_IP_PLL_DIVIDER;
3487 if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) &
3488 CCS_CLOCK_TREE_PLL_CAPABILITY_FLEXIBLE_OP_PIX_CLK_DIV)
3489 sensor->pll.flags |= CCS_PLL_FLAG_FLEXIBLE_OP_PIX_CLK_DIV;
3490 if (CCS_LIM(sensor, FIFO_SUPPORT_CAPABILITY) &
3491 CCS_FIFO_SUPPORT_CAPABILITY_DERATING)
3492 sensor->pll.flags |= CCS_PLL_FLAG_FIFO_DERATING;
3493 if (CCS_LIM(sensor, FIFO_SUPPORT_CAPABILITY) &
3494 CCS_FIFO_SUPPORT_CAPABILITY_DERATING_OVERRATING)
3495 sensor->pll.flags |= CCS_PLL_FLAG_FIFO_DERATING |
3496 CCS_PLL_FLAG_FIFO_OVERRATING;
3497 if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) &
3498 CCS_CLOCK_TREE_PLL_CAPABILITY_DUAL_PLL) {
3499 if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) &
3500 CCS_CLOCK_TREE_PLL_CAPABILITY_SINGLE_PLL) {
3501 u32 v;
3502
3503 /* Use sensor default in PLL mode selection */
3504 rval = ccs_read(sensor, PLL_MODE, &v);
3505 if (rval)
3506 goto out_cleanup;
3507
3508 if (v == CCS_PLL_MODE_DUAL)
3509 sensor->pll.flags |= CCS_PLL_FLAG_DUAL_PLL;
3510 } else {
3511 sensor->pll.flags |= CCS_PLL_FLAG_DUAL_PLL;
3512 }
3513 if (CCS_LIM(sensor, CLOCK_CALCULATION) &
3514 CCS_CLOCK_CALCULATION_DUAL_PLL_OP_SYS_DDR)
3515 sensor->pll.flags |= CCS_PLL_FLAG_OP_SYS_DDR;
3516 if (CCS_LIM(sensor, CLOCK_CALCULATION) &
3517 CCS_CLOCK_CALCULATION_DUAL_PLL_OP_PIX_DDR)
3518 sensor->pll.flags |= CCS_PLL_FLAG_OP_PIX_DDR;
3519 }
3520 sensor->pll.op_bits_per_lane = CCS_LIM(sensor, OP_BITS_PER_LANE);
3521 sensor->pll.ext_clk_freq_hz = sensor->hwcfg.ext_clk;
3522 sensor->pll.scale_n = CCS_LIM(sensor, SCALER_N_MIN);
3523
3524 ccs_create_subdev(sensor, sensor->scaler, " scaler", 2,
3525 MEDIA_ENT_F_PROC_VIDEO_SCALER);
3526 ccs_create_subdev(sensor, sensor->binner, " binner", 2,
3527 MEDIA_ENT_F_PROC_VIDEO_SCALER);
3528 ccs_create_subdev(sensor, sensor->pixel_array, " pixel_array", 1,
3529 MEDIA_ENT_F_CAM_SENSOR);
3530
3531 rval = ccs_init_controls(sensor);
3532 if (rval < 0)
3533 goto out_cleanup;
3534
3535 rval = ccs_call_quirk(sensor, init);
3536 if (rval)
3537 goto out_cleanup;
3538
3539 rval = ccs_get_mbus_formats(sensor);
3540 if (rval) {
3541 rval = -ENODEV;
3542 goto out_cleanup;
3543 }
3544
3545 rval = ccs_init_late_controls(sensor);
3546 if (rval) {
3547 rval = -ENODEV;
3548 goto out_cleanup;
3549 }
3550
3551 mutex_lock(&sensor->mutex);
3552 rval = ccs_pll_blanking_update(sensor);
3553 mutex_unlock(&sensor->mutex);
3554 if (rval) {
3555 dev_err(&client->dev, "update mode failed\n");
3556 goto out_cleanup;
3557 }
3558
3559 sensor->streaming = false;
3560 sensor->dev_init_done = true;
3561
3562 rval = media_entity_pads_init(&sensor->src->sd.entity, 2,
3563 sensor->src->pads);
3564 if (rval < 0)
3565 goto out_media_entity_cleanup;
3566
3567 rval = ccs_write_msr_regs(sensor);
3568 if (rval)
3569 goto out_media_entity_cleanup;
3570
3571 pm_runtime_set_active(&client->dev);
3572 pm_runtime_get_noresume(&client->dev);
3573 pm_runtime_enable(&client->dev);
3574
3575 rval = v4l2_async_register_subdev_sensor(&sensor->src->sd);
3576 if (rval < 0)
3577 goto out_disable_runtime_pm;
3578
3579 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
3580 pm_runtime_use_autosuspend(&client->dev);
3581 pm_runtime_put_autosuspend(&client->dev);
3582
3583 return 0;
3584
3585 out_disable_runtime_pm:
3586 pm_runtime_put_noidle(&client->dev);
3587 pm_runtime_disable(&client->dev);
3588
3589 out_media_entity_cleanup:
3590 media_entity_cleanup(&sensor->src->sd.entity);
3591
3592 out_cleanup:
3593 ccs_cleanup(sensor);
3594
3595 out_release_mdata:
3596 kvfree(sensor->mdata.backing);
3597
3598 out_release_sdata:
3599 kvfree(sensor->sdata.backing);
3600
3601 out_free_ccs_limits:
3602 kfree(sensor->ccs_limits);
3603
3604 out_power_off:
3605 ccs_power_off(&client->dev);
3606 mutex_destroy(&sensor->mutex);
3607
3608 return rval;
3609 }
3610
ccs_remove(struct i2c_client * client)3611 static int ccs_remove(struct i2c_client *client)
3612 {
3613 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
3614 struct ccs_sensor *sensor = to_ccs_sensor(subdev);
3615 unsigned int i;
3616
3617 v4l2_async_unregister_subdev(subdev);
3618
3619 pm_runtime_disable(&client->dev);
3620 if (!pm_runtime_status_suspended(&client->dev))
3621 ccs_power_off(&client->dev);
3622 pm_runtime_set_suspended(&client->dev);
3623
3624 for (i = 0; i < sensor->ssds_used; i++) {
3625 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
3626 media_entity_cleanup(&sensor->ssds[i].sd.entity);
3627 }
3628 ccs_cleanup(sensor);
3629 mutex_destroy(&sensor->mutex);
3630 kfree(sensor->ccs_limits);
3631 kvfree(sensor->sdata.backing);
3632 kvfree(sensor->mdata.backing);
3633
3634 return 0;
3635 }
3636
3637 static const struct ccs_device smia_device = {
3638 .flags = CCS_DEVICE_FLAG_IS_SMIA,
3639 };
3640
3641 static const struct ccs_device ccs_device = {};
3642
3643 static const struct acpi_device_id ccs_acpi_table[] = {
3644 { .id = "MIPI0200", .driver_data = (unsigned long)&ccs_device },
3645 { },
3646 };
3647 MODULE_DEVICE_TABLE(acpi, ccs_acpi_table);
3648
3649 static const struct of_device_id ccs_of_table[] = {
3650 { .compatible = "mipi-ccs-1.1", .data = &ccs_device },
3651 { .compatible = "mipi-ccs-1.0", .data = &ccs_device },
3652 { .compatible = "mipi-ccs", .data = &ccs_device },
3653 { .compatible = "nokia,smia", .data = &smia_device },
3654 { },
3655 };
3656 MODULE_DEVICE_TABLE(of, ccs_of_table);
3657
3658 static const struct dev_pm_ops ccs_pm_ops = {
3659 SET_SYSTEM_SLEEP_PM_OPS(ccs_suspend, ccs_resume)
3660 SET_RUNTIME_PM_OPS(ccs_power_off, ccs_power_on, NULL)
3661 };
3662
3663 static struct i2c_driver ccs_i2c_driver = {
3664 .driver = {
3665 .acpi_match_table = ccs_acpi_table,
3666 .of_match_table = ccs_of_table,
3667 .name = CCS_NAME,
3668 .pm = &ccs_pm_ops,
3669 },
3670 .probe_new = ccs_probe,
3671 .remove = ccs_remove,
3672 };
3673
ccs_module_init(void)3674 static int ccs_module_init(void)
3675 {
3676 unsigned int i, l;
3677
3678 for (i = 0, l = 0; ccs_limits[i].size && l < CCS_L_LAST; i++) {
3679 if (!(ccs_limits[i].flags & CCS_L_FL_SAME_REG)) {
3680 ccs_limit_offsets[l + 1].lim =
3681 ALIGN(ccs_limit_offsets[l].lim +
3682 ccs_limits[i].size,
3683 ccs_reg_width(ccs_limits[i + 1].reg));
3684 ccs_limit_offsets[l].info = i;
3685 l++;
3686 } else {
3687 ccs_limit_offsets[l].lim += ccs_limits[i].size;
3688 }
3689 }
3690
3691 if (WARN_ON(ccs_limits[i].size))
3692 return -EINVAL;
3693
3694 if (WARN_ON(l != CCS_L_LAST))
3695 return -EINVAL;
3696
3697 return i2c_register_driver(THIS_MODULE, &ccs_i2c_driver);
3698 }
3699
ccs_module_cleanup(void)3700 static void ccs_module_cleanup(void)
3701 {
3702 i2c_del_driver(&ccs_i2c_driver);
3703 }
3704
3705 module_init(ccs_module_init);
3706 module_exit(ccs_module_cleanup);
3707
3708 MODULE_AUTHOR("Sakari Ailus <sakari.ailus@linux.intel.com>");
3709 MODULE_DESCRIPTION("Generic MIPI CCS/SMIA/SMIA++ camera sensor driver");
3710 MODULE_LICENSE("GPL v2");
3711 MODULE_ALIAS("smiapp");
3712