1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Analog Devices ADV7511 HDMI transmitter driver
4 *
5 * Copyright 2012 Analog Devices Inc.
6 */
7
8 #include <linux/clk.h>
9 #include <linux/device.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/module.h>
12 #include <linux/of_device.h>
13 #include <linux/slab.h>
14
15 #include <media/cec.h>
16
17 #include <drm/drm_atomic.h>
18 #include <drm/drm_atomic_helper.h>
19 #include <drm/drm_edid.h>
20 #include <drm/drm_print.h>
21 #include <drm/drm_probe_helper.h>
22
23 #include "adv7511.h"
24
25 /* ADI recommended values for proper operation. */
26 static const struct reg_sequence adv7511_fixed_registers[] = {
27 { 0x98, 0x03 },
28 { 0x9a, 0xe0 },
29 { 0x9c, 0x30 },
30 { 0x9d, 0x61 },
31 { 0xa2, 0xa4 },
32 { 0xa3, 0xa4 },
33 { 0xe0, 0xd0 },
34 { 0xf9, 0x00 },
35 { 0x55, 0x02 },
36 };
37
38 /* -----------------------------------------------------------------------------
39 * Register access
40 */
41
42 static const uint8_t adv7511_register_defaults[] = {
43 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */
44 0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13,
45 0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */
46 0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84,
47 0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */
48 0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac,
49 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */
50 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0,
51 0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */
52 0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
53 0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */
54 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
55 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */
56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
57 0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */
58 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
59 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
61 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */
62 0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00,
63 0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */
64 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14,
65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */
66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
67 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */
68 0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04,
69 0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */
70 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01,
71 0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */
72 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
73 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */
74 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
75 };
76
adv7511_register_volatile(struct device * dev,unsigned int reg)77 static bool adv7511_register_volatile(struct device *dev, unsigned int reg)
78 {
79 switch (reg) {
80 case ADV7511_REG_CHIP_REVISION:
81 case ADV7511_REG_SPDIF_FREQ:
82 case ADV7511_REG_CTS_AUTOMATIC1:
83 case ADV7511_REG_CTS_AUTOMATIC2:
84 case ADV7511_REG_VIC_DETECTED:
85 case ADV7511_REG_VIC_SEND:
86 case ADV7511_REG_AUX_VIC_DETECTED:
87 case ADV7511_REG_STATUS:
88 case ADV7511_REG_GC(1):
89 case ADV7511_REG_INT(0):
90 case ADV7511_REG_INT(1):
91 case ADV7511_REG_PLL_STATUS:
92 case ADV7511_REG_AN(0):
93 case ADV7511_REG_AN(1):
94 case ADV7511_REG_AN(2):
95 case ADV7511_REG_AN(3):
96 case ADV7511_REG_AN(4):
97 case ADV7511_REG_AN(5):
98 case ADV7511_REG_AN(6):
99 case ADV7511_REG_AN(7):
100 case ADV7511_REG_HDCP_STATUS:
101 case ADV7511_REG_BCAPS:
102 case ADV7511_REG_BKSV(0):
103 case ADV7511_REG_BKSV(1):
104 case ADV7511_REG_BKSV(2):
105 case ADV7511_REG_BKSV(3):
106 case ADV7511_REG_BKSV(4):
107 case ADV7511_REG_DDC_STATUS:
108 case ADV7511_REG_EDID_READ_CTRL:
109 case ADV7511_REG_BSTATUS(0):
110 case ADV7511_REG_BSTATUS(1):
111 case ADV7511_REG_CHIP_ID_HIGH:
112 case ADV7511_REG_CHIP_ID_LOW:
113 return true;
114 }
115
116 return false;
117 }
118
119 static const struct regmap_config adv7511_regmap_config = {
120 .reg_bits = 8,
121 .val_bits = 8,
122
123 .max_register = 0xff,
124 .cache_type = REGCACHE_RBTREE,
125 .reg_defaults_raw = adv7511_register_defaults,
126 .num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults),
127
128 .volatile_reg = adv7511_register_volatile,
129 };
130
131 /* -----------------------------------------------------------------------------
132 * Hardware configuration
133 */
134
adv7511_set_colormap(struct adv7511 * adv7511,bool enable,const uint16_t * coeff,unsigned int scaling_factor)135 static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable,
136 const uint16_t *coeff,
137 unsigned int scaling_factor)
138 {
139 unsigned int i;
140
141 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1),
142 ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE);
143
144 if (enable) {
145 for (i = 0; i < 12; ++i) {
146 regmap_update_bits(adv7511->regmap,
147 ADV7511_REG_CSC_UPPER(i),
148 0x1f, coeff[i] >> 8);
149 regmap_write(adv7511->regmap,
150 ADV7511_REG_CSC_LOWER(i),
151 coeff[i] & 0xff);
152 }
153 }
154
155 if (enable)
156 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0),
157 0xe0, 0x80 | (scaling_factor << 5));
158 else
159 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0),
160 0x80, 0x00);
161
162 regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1),
163 ADV7511_CSC_UPDATE_MODE, 0);
164 }
165
adv7511_packet_enable(struct adv7511 * adv7511,unsigned int packet)166 static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet)
167 {
168 if (packet & 0xff)
169 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0,
170 packet, 0xff);
171
172 if (packet & 0xff00) {
173 packet >>= 8;
174 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1,
175 packet, 0xff);
176 }
177
178 return 0;
179 }
180
adv7511_packet_disable(struct adv7511 * adv7511,unsigned int packet)181 static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet)
182 {
183 if (packet & 0xff)
184 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0,
185 packet, 0x00);
186
187 if (packet & 0xff00) {
188 packet >>= 8;
189 regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1,
190 packet, 0x00);
191 }
192
193 return 0;
194 }
195
196 /* Coefficients for adv7511 color space conversion */
197 static const uint16_t adv7511_csc_ycbcr_to_rgb[] = {
198 0x0734, 0x04ad, 0x0000, 0x1c1b,
199 0x1ddc, 0x04ad, 0x1f24, 0x0135,
200 0x0000, 0x04ad, 0x087c, 0x1b77,
201 };
202
adv7511_set_config_csc(struct adv7511 * adv7511,struct drm_connector * connector,bool rgb,bool hdmi_mode)203 static void adv7511_set_config_csc(struct adv7511 *adv7511,
204 struct drm_connector *connector,
205 bool rgb, bool hdmi_mode)
206 {
207 struct adv7511_video_config config;
208 bool output_format_422, output_format_ycbcr;
209 unsigned int mode;
210 uint8_t infoframe[17];
211
212 config.hdmi_mode = hdmi_mode;
213
214 hdmi_avi_infoframe_init(&config.avi_infoframe);
215
216 config.avi_infoframe.scan_mode = HDMI_SCAN_MODE_UNDERSCAN;
217
218 if (rgb) {
219 config.csc_enable = false;
220 config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB;
221 } else {
222 config.csc_scaling_factor = ADV7511_CSC_SCALING_4;
223 config.csc_coefficents = adv7511_csc_ycbcr_to_rgb;
224
225 if ((connector->display_info.color_formats &
226 DRM_COLOR_FORMAT_YCRCB422) &&
227 config.hdmi_mode) {
228 config.csc_enable = false;
229 config.avi_infoframe.colorspace =
230 HDMI_COLORSPACE_YUV422;
231 } else {
232 config.csc_enable = true;
233 config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB;
234 }
235 }
236
237 if (config.hdmi_mode) {
238 mode = ADV7511_HDMI_CFG_MODE_HDMI;
239
240 switch (config.avi_infoframe.colorspace) {
241 case HDMI_COLORSPACE_YUV444:
242 output_format_422 = false;
243 output_format_ycbcr = true;
244 break;
245 case HDMI_COLORSPACE_YUV422:
246 output_format_422 = true;
247 output_format_ycbcr = true;
248 break;
249 default:
250 output_format_422 = false;
251 output_format_ycbcr = false;
252 break;
253 }
254 } else {
255 mode = ADV7511_HDMI_CFG_MODE_DVI;
256 output_format_422 = false;
257 output_format_ycbcr = false;
258 }
259
260 adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
261
262 adv7511_set_colormap(adv7511, config.csc_enable,
263 config.csc_coefficents,
264 config.csc_scaling_factor);
265
266 regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81,
267 (output_format_422 << 7) | output_format_ycbcr);
268
269 regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG,
270 ADV7511_HDMI_CFG_MODE_MASK, mode);
271
272 hdmi_avi_infoframe_pack(&config.avi_infoframe, infoframe,
273 sizeof(infoframe));
274
275 /* The AVI infoframe id is not configurable */
276 regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION,
277 infoframe + 1, sizeof(infoframe) - 1);
278
279 adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME);
280 }
281
adv7511_set_link_config(struct adv7511 * adv7511,const struct adv7511_link_config * config)282 static void adv7511_set_link_config(struct adv7511 *adv7511,
283 const struct adv7511_link_config *config)
284 {
285 /*
286 * The input style values documented in the datasheet don't match the
287 * hardware register field values :-(
288 */
289 static const unsigned int input_styles[4] = { 0, 2, 1, 3 };
290
291 unsigned int clock_delay;
292 unsigned int color_depth;
293 unsigned int input_id;
294
295 clock_delay = (config->clock_delay + 1200) / 400;
296 color_depth = config->input_color_depth == 8 ? 3
297 : (config->input_color_depth == 10 ? 1 : 2);
298
299 /* TODO Support input ID 6 */
300 if (config->input_colorspace != HDMI_COLORSPACE_YUV422)
301 input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR
302 ? 5 : 0;
303 else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR)
304 input_id = config->embedded_sync ? 8 : 7;
305 else if (config->input_clock == ADV7511_INPUT_CLOCK_2X)
306 input_id = config->embedded_sync ? 4 : 3;
307 else
308 input_id = config->embedded_sync ? 2 : 1;
309
310 regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf,
311 input_id);
312 regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e,
313 (color_depth << 4) |
314 (input_styles[config->input_style] << 2));
315 regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2,
316 config->input_justification << 3);
317 regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ,
318 config->sync_pulse << 2);
319
320 regmap_write(adv7511->regmap, 0xba, clock_delay << 5);
321
322 adv7511->embedded_sync = config->embedded_sync;
323 adv7511->hsync_polarity = config->hsync_polarity;
324 adv7511->vsync_polarity = config->vsync_polarity;
325 adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB;
326 }
327
__adv7511_power_on(struct adv7511 * adv7511)328 static void __adv7511_power_on(struct adv7511 *adv7511)
329 {
330 adv7511->current_edid_segment = -1;
331
332 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
333 ADV7511_POWER_POWER_DOWN, 0);
334 if (adv7511->i2c_main->irq) {
335 /*
336 * Documentation says the INT_ENABLE registers are reset in
337 * POWER_DOWN mode. My 7511w preserved the bits, however.
338 * Still, let's be safe and stick to the documentation.
339 */
340 regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0),
341 ADV7511_INT0_EDID_READY | ADV7511_INT0_HPD);
342 regmap_update_bits(adv7511->regmap,
343 ADV7511_REG_INT_ENABLE(1),
344 ADV7511_INT1_DDC_ERROR,
345 ADV7511_INT1_DDC_ERROR);
346 }
347
348 /*
349 * Per spec it is allowed to pulse the HPD signal to indicate that the
350 * EDID information has changed. Some monitors do this when they wakeup
351 * from standby or are enabled. When the HPD goes low the adv7511 is
352 * reset and the outputs are disabled which might cause the monitor to
353 * go to standby again. To avoid this we ignore the HPD pin for the
354 * first few seconds after enabling the output.
355 */
356 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
357 ADV7511_REG_POWER2_HPD_SRC_MASK,
358 ADV7511_REG_POWER2_HPD_SRC_NONE);
359 }
360
adv7511_power_on(struct adv7511 * adv7511)361 static void adv7511_power_on(struct adv7511 *adv7511)
362 {
363 __adv7511_power_on(adv7511);
364
365 /*
366 * Most of the registers are reset during power down or when HPD is low.
367 */
368 regcache_sync(adv7511->regmap);
369
370 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
371 adv7533_dsi_power_on(adv7511);
372 adv7511->powered = true;
373 }
374
__adv7511_power_off(struct adv7511 * adv7511)375 static void __adv7511_power_off(struct adv7511 *adv7511)
376 {
377 /* TODO: setup additional power down modes */
378 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
379 ADV7511_POWER_POWER_DOWN,
380 ADV7511_POWER_POWER_DOWN);
381 regmap_update_bits(adv7511->regmap,
382 ADV7511_REG_INT_ENABLE(1),
383 ADV7511_INT1_DDC_ERROR, 0);
384 regcache_mark_dirty(adv7511->regmap);
385 }
386
adv7511_power_off(struct adv7511 * adv7511)387 static void adv7511_power_off(struct adv7511 *adv7511)
388 {
389 __adv7511_power_off(adv7511);
390 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
391 adv7533_dsi_power_off(adv7511);
392 adv7511->powered = false;
393 }
394
395 /* -----------------------------------------------------------------------------
396 * Interrupt and hotplug detection
397 */
398
adv7511_hpd(struct adv7511 * adv7511)399 static bool adv7511_hpd(struct adv7511 *adv7511)
400 {
401 unsigned int irq0;
402 int ret;
403
404 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
405 if (ret < 0)
406 return false;
407
408 if (irq0 & ADV7511_INT0_HPD) {
409 regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
410 ADV7511_INT0_HPD);
411 return true;
412 }
413
414 return false;
415 }
416
adv7511_hpd_work(struct work_struct * work)417 static void adv7511_hpd_work(struct work_struct *work)
418 {
419 struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work);
420 enum drm_connector_status status;
421 unsigned int val;
422 int ret;
423
424 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
425 if (ret < 0)
426 status = connector_status_disconnected;
427 else if (val & ADV7511_STATUS_HPD)
428 status = connector_status_connected;
429 else
430 status = connector_status_disconnected;
431
432 /*
433 * The bridge resets its registers on unplug. So when we get a plug
434 * event and we're already supposed to be powered, cycle the bridge to
435 * restore its state.
436 */
437 if (status == connector_status_connected &&
438 adv7511->connector.status == connector_status_disconnected &&
439 adv7511->powered) {
440 regcache_mark_dirty(adv7511->regmap);
441 adv7511_power_on(adv7511);
442 }
443
444 if (adv7511->connector.status != status) {
445 adv7511->connector.status = status;
446
447 if (adv7511->connector.dev) {
448 if (status == connector_status_disconnected)
449 cec_phys_addr_invalidate(adv7511->cec_adap);
450 drm_kms_helper_hotplug_event(adv7511->connector.dev);
451 } else {
452 drm_bridge_hpd_notify(&adv7511->bridge, status);
453 }
454 }
455 }
456
adv7511_irq_process(struct adv7511 * adv7511,bool process_hpd)457 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
458 {
459 unsigned int irq0, irq1;
460 int ret;
461
462 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
463 if (ret < 0)
464 return ret;
465
466 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
467 if (ret < 0)
468 return ret;
469
470 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
471 regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
472
473 if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder)
474 schedule_work(&adv7511->hpd_work);
475
476 if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
477 adv7511->edid_read = true;
478
479 if (adv7511->i2c_main->irq)
480 wake_up_all(&adv7511->wq);
481 }
482
483 #ifdef CONFIG_DRM_I2C_ADV7511_CEC
484 adv7511_cec_irq_process(adv7511, irq1);
485 #endif
486
487 return 0;
488 }
489
adv7511_irq_handler(int irq,void * devid)490 static irqreturn_t adv7511_irq_handler(int irq, void *devid)
491 {
492 struct adv7511 *adv7511 = devid;
493 int ret;
494
495 ret = adv7511_irq_process(adv7511, true);
496 return ret < 0 ? IRQ_NONE : IRQ_HANDLED;
497 }
498
499 /* -----------------------------------------------------------------------------
500 * EDID retrieval
501 */
502
adv7511_wait_for_edid(struct adv7511 * adv7511,int timeout)503 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
504 {
505 int ret;
506
507 if (adv7511->i2c_main->irq) {
508 ret = wait_event_interruptible_timeout(adv7511->wq,
509 adv7511->edid_read, msecs_to_jiffies(timeout));
510 } else {
511 for (; timeout > 0; timeout -= 25) {
512 ret = adv7511_irq_process(adv7511, false);
513 if (ret < 0)
514 break;
515
516 if (adv7511->edid_read)
517 break;
518
519 msleep(25);
520 }
521 }
522
523 return adv7511->edid_read ? 0 : -EIO;
524 }
525
adv7511_get_edid_block(void * data,u8 * buf,unsigned int block,size_t len)526 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
527 size_t len)
528 {
529 struct adv7511 *adv7511 = data;
530 struct i2c_msg xfer[2];
531 uint8_t offset;
532 unsigned int i;
533 int ret;
534
535 if (len > 128)
536 return -EINVAL;
537
538 if (adv7511->current_edid_segment != block / 2) {
539 unsigned int status;
540
541 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
542 &status);
543 if (ret < 0)
544 return ret;
545
546 if (status != 2) {
547 adv7511->edid_read = false;
548 regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
549 block);
550 ret = adv7511_wait_for_edid(adv7511, 200);
551 if (ret < 0)
552 return ret;
553 }
554
555 /* Break this apart, hopefully more I2C controllers will
556 * support 64 byte transfers than 256 byte transfers
557 */
558
559 xfer[0].addr = adv7511->i2c_edid->addr;
560 xfer[0].flags = 0;
561 xfer[0].len = 1;
562 xfer[0].buf = &offset;
563 xfer[1].addr = adv7511->i2c_edid->addr;
564 xfer[1].flags = I2C_M_RD;
565 xfer[1].len = 64;
566 xfer[1].buf = adv7511->edid_buf;
567
568 offset = 0;
569
570 for (i = 0; i < 4; ++i) {
571 ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
572 ARRAY_SIZE(xfer));
573 if (ret < 0)
574 return ret;
575 else if (ret != 2)
576 return -EIO;
577
578 xfer[1].buf += 64;
579 offset += 64;
580 }
581
582 adv7511->current_edid_segment = block / 2;
583 }
584
585 if (block % 2 == 0)
586 memcpy(buf, adv7511->edid_buf, len);
587 else
588 memcpy(buf, adv7511->edid_buf + 128, len);
589
590 return 0;
591 }
592
593 /* -----------------------------------------------------------------------------
594 * ADV75xx helpers
595 */
596
adv7511_get_edid(struct adv7511 * adv7511,struct drm_connector * connector)597 static struct edid *adv7511_get_edid(struct adv7511 *adv7511,
598 struct drm_connector *connector)
599 {
600 struct edid *edid;
601
602 /* Reading the EDID only works if the device is powered */
603 if (!adv7511->powered) {
604 unsigned int edid_i2c_addr =
605 (adv7511->i2c_edid->addr << 1);
606
607 __adv7511_power_on(adv7511);
608
609 /* Reset the EDID_I2C_ADDR register as it might be cleared */
610 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
611 edid_i2c_addr);
612 }
613
614 edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
615
616 if (!adv7511->powered)
617 __adv7511_power_off(adv7511);
618
619 adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
620 drm_detect_hdmi_monitor(edid));
621
622 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
623
624 return edid;
625 }
626
adv7511_get_modes(struct adv7511 * adv7511,struct drm_connector * connector)627 static int adv7511_get_modes(struct adv7511 *adv7511,
628 struct drm_connector *connector)
629 {
630 struct edid *edid;
631 unsigned int count;
632
633 edid = adv7511_get_edid(adv7511, connector);
634
635 drm_connector_update_edid_property(connector, edid);
636 count = drm_add_edid_modes(connector, edid);
637
638 kfree(edid);
639
640 return count;
641 }
642
643 static enum drm_connector_status
adv7511_detect(struct adv7511 * adv7511,struct drm_connector * connector)644 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
645 {
646 enum drm_connector_status status;
647 unsigned int val;
648 bool hpd;
649 int ret;
650
651 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
652 if (ret < 0)
653 return connector_status_disconnected;
654
655 if (val & ADV7511_STATUS_HPD)
656 status = connector_status_connected;
657 else
658 status = connector_status_disconnected;
659
660 hpd = adv7511_hpd(adv7511);
661
662 /* The chip resets itself when the cable is disconnected, so in case
663 * there is a pending HPD interrupt and the cable is connected there was
664 * at least one transition from disconnected to connected and the chip
665 * has to be reinitialized. */
666 if (status == connector_status_connected && hpd && adv7511->powered) {
667 regcache_mark_dirty(adv7511->regmap);
668 adv7511_power_on(adv7511);
669 if (connector)
670 adv7511_get_modes(adv7511, connector);
671 if (adv7511->status == connector_status_connected)
672 status = connector_status_disconnected;
673 } else {
674 /* Renable HPD sensing */
675 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
676 ADV7511_REG_POWER2_HPD_SRC_MASK,
677 ADV7511_REG_POWER2_HPD_SRC_BOTH);
678 }
679
680 adv7511->status = status;
681 return status;
682 }
683
adv7511_mode_valid(struct adv7511 * adv7511,struct drm_display_mode * mode)684 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
685 struct drm_display_mode *mode)
686 {
687 if (mode->clock > 165000)
688 return MODE_CLOCK_HIGH;
689
690 return MODE_OK;
691 }
692
adv7511_mode_set(struct adv7511 * adv7511,const struct drm_display_mode * mode,const struct drm_display_mode * adj_mode)693 static void adv7511_mode_set(struct adv7511 *adv7511,
694 const struct drm_display_mode *mode,
695 const struct drm_display_mode *adj_mode)
696 {
697 unsigned int low_refresh_rate;
698 unsigned int hsync_polarity = 0;
699 unsigned int vsync_polarity = 0;
700
701 if (adv7511->embedded_sync) {
702 unsigned int hsync_offset, hsync_len;
703 unsigned int vsync_offset, vsync_len;
704
705 hsync_offset = adj_mode->crtc_hsync_start -
706 adj_mode->crtc_hdisplay;
707 vsync_offset = adj_mode->crtc_vsync_start -
708 adj_mode->crtc_vdisplay;
709 hsync_len = adj_mode->crtc_hsync_end -
710 adj_mode->crtc_hsync_start;
711 vsync_len = adj_mode->crtc_vsync_end -
712 adj_mode->crtc_vsync_start;
713
714 /* The hardware vsync generator has a off-by-one bug */
715 vsync_offset += 1;
716
717 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
718 ((hsync_offset >> 10) & 0x7) << 5);
719 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
720 (hsync_offset >> 2) & 0xff);
721 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
722 ((hsync_offset & 0x3) << 6) |
723 ((hsync_len >> 4) & 0x3f));
724 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
725 ((hsync_len & 0xf) << 4) |
726 ((vsync_offset >> 6) & 0xf));
727 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
728 ((vsync_offset & 0x3f) << 2) |
729 ((vsync_len >> 8) & 0x3));
730 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
731 vsync_len & 0xff);
732
733 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
734 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
735 } else {
736 enum adv7511_sync_polarity mode_hsync_polarity;
737 enum adv7511_sync_polarity mode_vsync_polarity;
738
739 /**
740 * If the input signal is always low or always high we want to
741 * invert or let it passthrough depending on the polarity of the
742 * current mode.
743 **/
744 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
745 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
746 else
747 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
748
749 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
750 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
751 else
752 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
753
754 if (adv7511->hsync_polarity != mode_hsync_polarity &&
755 adv7511->hsync_polarity !=
756 ADV7511_SYNC_POLARITY_PASSTHROUGH)
757 hsync_polarity = 1;
758
759 if (adv7511->vsync_polarity != mode_vsync_polarity &&
760 adv7511->vsync_polarity !=
761 ADV7511_SYNC_POLARITY_PASSTHROUGH)
762 vsync_polarity = 1;
763 }
764
765 if (drm_mode_vrefresh(mode) <= 24)
766 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
767 else if (drm_mode_vrefresh(mode) <= 25)
768 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
769 else if (drm_mode_vrefresh(mode) <= 30)
770 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
771 else
772 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
773
774 regmap_update_bits(adv7511->regmap, 0xfb,
775 0x6, low_refresh_rate << 1);
776 regmap_update_bits(adv7511->regmap, 0x17,
777 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
778
779 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
780 adv7533_mode_set(adv7511, adj_mode);
781
782 drm_mode_copy(&adv7511->curr_mode, adj_mode);
783
784 /*
785 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
786 * supposed to give better results.
787 */
788
789 adv7511->f_tmds = mode->clock;
790 }
791
792 /* -----------------------------------------------------------------------------
793 * DRM Connector Operations
794 */
795
connector_to_adv7511(struct drm_connector * connector)796 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
797 {
798 return container_of(connector, struct adv7511, connector);
799 }
800
adv7511_connector_get_modes(struct drm_connector * connector)801 static int adv7511_connector_get_modes(struct drm_connector *connector)
802 {
803 struct adv7511 *adv = connector_to_adv7511(connector);
804
805 return adv7511_get_modes(adv, connector);
806 }
807
808 static enum drm_mode_status
adv7511_connector_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)809 adv7511_connector_mode_valid(struct drm_connector *connector,
810 struct drm_display_mode *mode)
811 {
812 struct adv7511 *adv = connector_to_adv7511(connector);
813
814 return adv7511_mode_valid(adv, mode);
815 }
816
817 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
818 .get_modes = adv7511_connector_get_modes,
819 .mode_valid = adv7511_connector_mode_valid,
820 };
821
822 static enum drm_connector_status
adv7511_connector_detect(struct drm_connector * connector,bool force)823 adv7511_connector_detect(struct drm_connector *connector, bool force)
824 {
825 struct adv7511 *adv = connector_to_adv7511(connector);
826
827 return adv7511_detect(adv, connector);
828 }
829
830 static const struct drm_connector_funcs adv7511_connector_funcs = {
831 .fill_modes = drm_helper_probe_single_connector_modes,
832 .detect = adv7511_connector_detect,
833 .destroy = drm_connector_cleanup,
834 .reset = drm_atomic_helper_connector_reset,
835 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
836 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
837 };
838
adv7511_connector_init(struct adv7511 * adv)839 static int adv7511_connector_init(struct adv7511 *adv)
840 {
841 struct drm_bridge *bridge = &adv->bridge;
842 int ret;
843
844 if (!bridge->encoder) {
845 DRM_ERROR("Parent encoder object not found");
846 return -ENODEV;
847 }
848
849 if (adv->i2c_main->irq)
850 adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
851 else
852 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
853 DRM_CONNECTOR_POLL_DISCONNECT;
854
855 ret = drm_connector_init(bridge->dev, &adv->connector,
856 &adv7511_connector_funcs,
857 DRM_MODE_CONNECTOR_HDMIA);
858 if (ret < 0) {
859 DRM_ERROR("Failed to initialize connector with drm\n");
860 return ret;
861 }
862 drm_connector_helper_add(&adv->connector,
863 &adv7511_connector_helper_funcs);
864 drm_connector_attach_encoder(&adv->connector, bridge->encoder);
865
866 return 0;
867 }
868
869 /* -----------------------------------------------------------------------------
870 * DRM Bridge Operations
871 */
872
bridge_to_adv7511(struct drm_bridge * bridge)873 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
874 {
875 return container_of(bridge, struct adv7511, bridge);
876 }
877
adv7511_bridge_enable(struct drm_bridge * bridge)878 static void adv7511_bridge_enable(struct drm_bridge *bridge)
879 {
880 struct adv7511 *adv = bridge_to_adv7511(bridge);
881
882 adv7511_power_on(adv);
883 }
884
adv7511_bridge_disable(struct drm_bridge * bridge)885 static void adv7511_bridge_disable(struct drm_bridge *bridge)
886 {
887 struct adv7511 *adv = bridge_to_adv7511(bridge);
888
889 adv7511_power_off(adv);
890 }
891
adv7511_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adj_mode)892 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
893 const struct drm_display_mode *mode,
894 const struct drm_display_mode *adj_mode)
895 {
896 struct adv7511 *adv = bridge_to_adv7511(bridge);
897
898 adv7511_mode_set(adv, mode, adj_mode);
899 }
900
adv7511_bridge_attach(struct drm_bridge * bridge,enum drm_bridge_attach_flags flags)901 static int adv7511_bridge_attach(struct drm_bridge *bridge,
902 enum drm_bridge_attach_flags flags)
903 {
904 struct adv7511 *adv = bridge_to_adv7511(bridge);
905 int ret = 0;
906
907 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
908 ret = adv7511_connector_init(adv);
909 if (ret < 0)
910 return ret;
911 }
912
913 if (adv->type == ADV7533 || adv->type == ADV7535)
914 ret = adv7533_attach_dsi(adv);
915
916 if (adv->i2c_main->irq)
917 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
918 ADV7511_INT0_HPD);
919
920 return ret;
921 }
922
adv7511_bridge_detect(struct drm_bridge * bridge)923 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge)
924 {
925 struct adv7511 *adv = bridge_to_adv7511(bridge);
926
927 return adv7511_detect(adv, NULL);
928 }
929
adv7511_bridge_get_edid(struct drm_bridge * bridge,struct drm_connector * connector)930 static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge,
931 struct drm_connector *connector)
932 {
933 struct adv7511 *adv = bridge_to_adv7511(bridge);
934
935 return adv7511_get_edid(adv, connector);
936 }
937
adv7511_bridge_hpd_notify(struct drm_bridge * bridge,enum drm_connector_status status)938 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge,
939 enum drm_connector_status status)
940 {
941 struct adv7511 *adv = bridge_to_adv7511(bridge);
942
943 if (status == connector_status_disconnected)
944 cec_phys_addr_invalidate(adv->cec_adap);
945 }
946
947 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
948 .enable = adv7511_bridge_enable,
949 .disable = adv7511_bridge_disable,
950 .mode_set = adv7511_bridge_mode_set,
951 .attach = adv7511_bridge_attach,
952 .detect = adv7511_bridge_detect,
953 .get_edid = adv7511_bridge_get_edid,
954 .hpd_notify = adv7511_bridge_hpd_notify,
955 };
956
957 /* -----------------------------------------------------------------------------
958 * Probe & remove
959 */
960
961 static const char * const adv7511_supply_names[] = {
962 "avdd",
963 "dvdd",
964 "pvdd",
965 "bgvdd",
966 "dvdd-3v",
967 };
968
969 static const char * const adv7533_supply_names[] = {
970 "avdd",
971 "dvdd",
972 "pvdd",
973 "a2vdd",
974 "v3p3",
975 "v1p2",
976 };
977
adv7511_init_regulators(struct adv7511 * adv)978 static int adv7511_init_regulators(struct adv7511 *adv)
979 {
980 struct device *dev = &adv->i2c_main->dev;
981 const char * const *supply_names;
982 unsigned int i;
983 int ret;
984
985 if (adv->type == ADV7511) {
986 supply_names = adv7511_supply_names;
987 adv->num_supplies = ARRAY_SIZE(adv7511_supply_names);
988 } else {
989 supply_names = adv7533_supply_names;
990 adv->num_supplies = ARRAY_SIZE(adv7533_supply_names);
991 }
992
993 adv->supplies = devm_kcalloc(dev, adv->num_supplies,
994 sizeof(*adv->supplies), GFP_KERNEL);
995 if (!adv->supplies)
996 return -ENOMEM;
997
998 for (i = 0; i < adv->num_supplies; i++)
999 adv->supplies[i].supply = supply_names[i];
1000
1001 ret = devm_regulator_bulk_get(dev, adv->num_supplies, adv->supplies);
1002 if (ret)
1003 return ret;
1004
1005 return regulator_bulk_enable(adv->num_supplies, adv->supplies);
1006 }
1007
adv7511_uninit_regulators(struct adv7511 * adv)1008 static void adv7511_uninit_regulators(struct adv7511 *adv)
1009 {
1010 regulator_bulk_disable(adv->num_supplies, adv->supplies);
1011 }
1012
adv7511_cec_register_volatile(struct device * dev,unsigned int reg)1013 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
1014 {
1015 struct i2c_client *i2c = to_i2c_client(dev);
1016 struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1017
1018 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
1019 reg -= ADV7533_REG_CEC_OFFSET;
1020
1021 switch (reg) {
1022 case ADV7511_REG_CEC_RX_FRAME_HDR:
1023 case ADV7511_REG_CEC_RX_FRAME_DATA0...
1024 ADV7511_REG_CEC_RX_FRAME_DATA0 + 14:
1025 case ADV7511_REG_CEC_RX_FRAME_LEN:
1026 case ADV7511_REG_CEC_RX_BUFFERS:
1027 case ADV7511_REG_CEC_TX_LOW_DRV_CNT:
1028 return true;
1029 }
1030
1031 return false;
1032 }
1033
1034 static const struct regmap_config adv7511_cec_regmap_config = {
1035 .reg_bits = 8,
1036 .val_bits = 8,
1037
1038 .max_register = 0xff,
1039 .cache_type = REGCACHE_RBTREE,
1040 .volatile_reg = adv7511_cec_register_volatile,
1041 };
1042
adv7511_init_cec_regmap(struct adv7511 * adv)1043 static int adv7511_init_cec_regmap(struct adv7511 *adv)
1044 {
1045 int ret;
1046
1047 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec",
1048 ADV7511_CEC_I2C_ADDR_DEFAULT);
1049 if (IS_ERR(adv->i2c_cec))
1050 return PTR_ERR(adv->i2c_cec);
1051 i2c_set_clientdata(adv->i2c_cec, adv);
1052
1053 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
1054 &adv7511_cec_regmap_config);
1055 if (IS_ERR(adv->regmap_cec)) {
1056 ret = PTR_ERR(adv->regmap_cec);
1057 goto err;
1058 }
1059
1060 if (adv->type == ADV7533 || adv->type == ADV7535) {
1061 ret = adv7533_patch_cec_registers(adv);
1062 if (ret)
1063 goto err;
1064 }
1065
1066 return 0;
1067 err:
1068 i2c_unregister_device(adv->i2c_cec);
1069 return ret;
1070 }
1071
adv7511_parse_dt(struct device_node * np,struct adv7511_link_config * config)1072 static int adv7511_parse_dt(struct device_node *np,
1073 struct adv7511_link_config *config)
1074 {
1075 const char *str;
1076 int ret;
1077
1078 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
1079 if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
1080 config->input_color_depth != 12)
1081 return -EINVAL;
1082
1083 ret = of_property_read_string(np, "adi,input-colorspace", &str);
1084 if (ret < 0)
1085 return ret;
1086
1087 if (!strcmp(str, "rgb"))
1088 config->input_colorspace = HDMI_COLORSPACE_RGB;
1089 else if (!strcmp(str, "yuv422"))
1090 config->input_colorspace = HDMI_COLORSPACE_YUV422;
1091 else if (!strcmp(str, "yuv444"))
1092 config->input_colorspace = HDMI_COLORSPACE_YUV444;
1093 else
1094 return -EINVAL;
1095
1096 ret = of_property_read_string(np, "adi,input-clock", &str);
1097 if (ret < 0)
1098 return ret;
1099
1100 if (!strcmp(str, "1x"))
1101 config->input_clock = ADV7511_INPUT_CLOCK_1X;
1102 else if (!strcmp(str, "2x"))
1103 config->input_clock = ADV7511_INPUT_CLOCK_2X;
1104 else if (!strcmp(str, "ddr"))
1105 config->input_clock = ADV7511_INPUT_CLOCK_DDR;
1106 else
1107 return -EINVAL;
1108
1109 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
1110 config->input_clock != ADV7511_INPUT_CLOCK_1X) {
1111 ret = of_property_read_u32(np, "adi,input-style",
1112 &config->input_style);
1113 if (ret)
1114 return ret;
1115
1116 if (config->input_style < 1 || config->input_style > 3)
1117 return -EINVAL;
1118
1119 ret = of_property_read_string(np, "adi,input-justification",
1120 &str);
1121 if (ret < 0)
1122 return ret;
1123
1124 if (!strcmp(str, "left"))
1125 config->input_justification =
1126 ADV7511_INPUT_JUSTIFICATION_LEFT;
1127 else if (!strcmp(str, "evenly"))
1128 config->input_justification =
1129 ADV7511_INPUT_JUSTIFICATION_EVENLY;
1130 else if (!strcmp(str, "right"))
1131 config->input_justification =
1132 ADV7511_INPUT_JUSTIFICATION_RIGHT;
1133 else
1134 return -EINVAL;
1135
1136 } else {
1137 config->input_style = 1;
1138 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
1139 }
1140
1141 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
1142 if (config->clock_delay < -1200 || config->clock_delay > 1600)
1143 return -EINVAL;
1144
1145 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
1146
1147 /* Hardcode the sync pulse configurations for now. */
1148 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
1149 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1150 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1151
1152 return 0;
1153 }
1154
adv7511_probe(struct i2c_client * i2c,const struct i2c_device_id * id)1155 static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
1156 {
1157 struct adv7511_link_config link_config;
1158 struct adv7511 *adv7511;
1159 struct device *dev = &i2c->dev;
1160 unsigned int val;
1161 int ret;
1162
1163 if (!dev->of_node)
1164 return -EINVAL;
1165
1166 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
1167 if (!adv7511)
1168 return -ENOMEM;
1169
1170 adv7511->i2c_main = i2c;
1171 adv7511->powered = false;
1172 adv7511->status = connector_status_disconnected;
1173
1174 if (dev->of_node)
1175 adv7511->type = (enum adv7511_type)of_device_get_match_data(dev);
1176 else
1177 adv7511->type = id->driver_data;
1178
1179 memset(&link_config, 0, sizeof(link_config));
1180
1181 if (adv7511->type == ADV7511)
1182 ret = adv7511_parse_dt(dev->of_node, &link_config);
1183 else
1184 ret = adv7533_parse_dt(dev->of_node, adv7511);
1185 if (ret)
1186 return ret;
1187
1188 ret = adv7511_init_regulators(adv7511);
1189 if (ret) {
1190 dev_err(dev, "failed to init regulators\n");
1191 return ret;
1192 }
1193
1194 /*
1195 * The power down GPIO is optional. If present, toggle it from active to
1196 * inactive to wake up the encoder.
1197 */
1198 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
1199 if (IS_ERR(adv7511->gpio_pd)) {
1200 ret = PTR_ERR(adv7511->gpio_pd);
1201 goto uninit_regulators;
1202 }
1203
1204 if (adv7511->gpio_pd) {
1205 usleep_range(5000, 6000);
1206 gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
1207 }
1208
1209 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
1210 if (IS_ERR(adv7511->regmap)) {
1211 ret = PTR_ERR(adv7511->regmap);
1212 goto uninit_regulators;
1213 }
1214
1215 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
1216 if (ret)
1217 goto uninit_regulators;
1218 dev_dbg(dev, "Rev. %d\n", val);
1219
1220 if (adv7511->type == ADV7511)
1221 ret = regmap_register_patch(adv7511->regmap,
1222 adv7511_fixed_registers,
1223 ARRAY_SIZE(adv7511_fixed_registers));
1224 else
1225 ret = adv7533_patch_registers(adv7511);
1226 if (ret)
1227 goto uninit_regulators;
1228
1229 adv7511_packet_disable(adv7511, 0xffff);
1230
1231 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",
1232 ADV7511_EDID_I2C_ADDR_DEFAULT);
1233 if (IS_ERR(adv7511->i2c_edid)) {
1234 ret = PTR_ERR(adv7511->i2c_edid);
1235 goto uninit_regulators;
1236 }
1237
1238 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
1239 adv7511->i2c_edid->addr << 1);
1240
1241 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet",
1242 ADV7511_PACKET_I2C_ADDR_DEFAULT);
1243 if (IS_ERR(adv7511->i2c_packet)) {
1244 ret = PTR_ERR(adv7511->i2c_packet);
1245 goto err_i2c_unregister_edid;
1246 }
1247
1248 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
1249 adv7511->i2c_packet->addr << 1);
1250
1251 ret = adv7511_init_cec_regmap(adv7511);
1252 if (ret)
1253 goto err_i2c_unregister_packet;
1254
1255 regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR,
1256 adv7511->i2c_cec->addr << 1);
1257
1258 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
1259
1260 if (i2c->irq) {
1261 init_waitqueue_head(&adv7511->wq);
1262
1263 ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
1264 adv7511_irq_handler,
1265 IRQF_ONESHOT, dev_name(dev),
1266 adv7511);
1267 if (ret)
1268 goto err_unregister_cec;
1269 }
1270
1271 adv7511_power_off(adv7511);
1272
1273 i2c_set_clientdata(i2c, adv7511);
1274
1275 if (adv7511->type == ADV7511)
1276 adv7511_set_link_config(adv7511, &link_config);
1277
1278 ret = adv7511_cec_init(dev, adv7511);
1279 if (ret)
1280 goto err_unregister_cec;
1281
1282 adv7511->bridge.funcs = &adv7511_bridge_funcs;
1283 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
1284 | DRM_BRIDGE_OP_HPD;
1285 adv7511->bridge.of_node = dev->of_node;
1286 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1287
1288 drm_bridge_add(&adv7511->bridge);
1289
1290 adv7511_audio_init(dev, adv7511);
1291 return 0;
1292
1293 err_unregister_cec:
1294 i2c_unregister_device(adv7511->i2c_cec);
1295 clk_disable_unprepare(adv7511->cec_clk);
1296 err_i2c_unregister_packet:
1297 i2c_unregister_device(adv7511->i2c_packet);
1298 err_i2c_unregister_edid:
1299 i2c_unregister_device(adv7511->i2c_edid);
1300 uninit_regulators:
1301 adv7511_uninit_regulators(adv7511);
1302
1303 return ret;
1304 }
1305
adv7511_remove(struct i2c_client * i2c)1306 static int adv7511_remove(struct i2c_client *i2c)
1307 {
1308 struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1309
1310 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
1311 adv7533_detach_dsi(adv7511);
1312 i2c_unregister_device(adv7511->i2c_cec);
1313 clk_disable_unprepare(adv7511->cec_clk);
1314
1315 adv7511_uninit_regulators(adv7511);
1316
1317 drm_bridge_remove(&adv7511->bridge);
1318
1319 adv7511_audio_exit(adv7511);
1320
1321 cec_unregister_adapter(adv7511->cec_adap);
1322
1323 i2c_unregister_device(adv7511->i2c_packet);
1324 i2c_unregister_device(adv7511->i2c_edid);
1325
1326 return 0;
1327 }
1328
1329 static const struct i2c_device_id adv7511_i2c_ids[] = {
1330 { "adv7511", ADV7511 },
1331 { "adv7511w", ADV7511 },
1332 { "adv7513", ADV7511 },
1333 { "adv7533", ADV7533 },
1334 { "adv7535", ADV7535 },
1335 { }
1336 };
1337 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
1338
1339 static const struct of_device_id adv7511_of_ids[] = {
1340 { .compatible = "adi,adv7511", .data = (void *)ADV7511 },
1341 { .compatible = "adi,adv7511w", .data = (void *)ADV7511 },
1342 { .compatible = "adi,adv7513", .data = (void *)ADV7511 },
1343 { .compatible = "adi,adv7533", .data = (void *)ADV7533 },
1344 { .compatible = "adi,adv7535", .data = (void *)ADV7535 },
1345 { }
1346 };
1347 MODULE_DEVICE_TABLE(of, adv7511_of_ids);
1348
1349 static struct mipi_dsi_driver adv7533_dsi_driver = {
1350 .driver.name = "adv7533",
1351 };
1352
1353 static struct i2c_driver adv7511_driver = {
1354 .driver = {
1355 .name = "adv7511",
1356 .of_match_table = adv7511_of_ids,
1357 },
1358 .id_table = adv7511_i2c_ids,
1359 .probe = adv7511_probe,
1360 .remove = adv7511_remove,
1361 };
1362
adv7511_init(void)1363 static int __init adv7511_init(void)
1364 {
1365 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1366 mipi_dsi_driver_register(&adv7533_dsi_driver);
1367
1368 return i2c_add_driver(&adv7511_driver);
1369 }
1370 module_init(adv7511_init);
1371
adv7511_exit(void)1372 static void __exit adv7511_exit(void)
1373 {
1374 i2c_del_driver(&adv7511_driver);
1375
1376 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1377 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1378 }
1379 module_exit(adv7511_exit);
1380
1381 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
1382 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
1383 MODULE_LICENSE("GPL");
1384