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.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_YCBCR422) &&
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. On the other hand
355 * adv7535 require to enable HPD Override bit for proper HPD.
356 */
357 if (adv7511->type == ADV7535)
358 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
359 ADV7535_REG_POWER2_HPD_OVERRIDE,
360 ADV7535_REG_POWER2_HPD_OVERRIDE);
361 else
362 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
363 ADV7511_REG_POWER2_HPD_SRC_MASK,
364 ADV7511_REG_POWER2_HPD_SRC_NONE);
365 }
366
adv7511_power_on(struct adv7511 * adv7511)367 static void adv7511_power_on(struct adv7511 *adv7511)
368 {
369 __adv7511_power_on(adv7511);
370
371 /*
372 * Most of the registers are reset during power down or when HPD is low.
373 */
374 regcache_sync(adv7511->regmap);
375
376 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
377 adv7533_dsi_power_on(adv7511);
378 adv7511->powered = true;
379 }
380
__adv7511_power_off(struct adv7511 * adv7511)381 static void __adv7511_power_off(struct adv7511 *adv7511)
382 {
383 /* TODO: setup additional power down modes */
384 if (adv7511->type == ADV7535)
385 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
386 ADV7535_REG_POWER2_HPD_OVERRIDE, 0);
387
388 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
389 ADV7511_POWER_POWER_DOWN,
390 ADV7511_POWER_POWER_DOWN);
391 regmap_update_bits(adv7511->regmap,
392 ADV7511_REG_INT_ENABLE(1),
393 ADV7511_INT1_DDC_ERROR, 0);
394 regcache_mark_dirty(adv7511->regmap);
395 }
396
adv7511_power_off(struct adv7511 * adv7511)397 static void adv7511_power_off(struct adv7511 *adv7511)
398 {
399 __adv7511_power_off(adv7511);
400 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
401 adv7533_dsi_power_off(adv7511);
402 adv7511->powered = false;
403 }
404
405 /* -----------------------------------------------------------------------------
406 * Interrupt and hotplug detection
407 */
408
adv7511_hpd(struct adv7511 * adv7511)409 static bool adv7511_hpd(struct adv7511 *adv7511)
410 {
411 unsigned int irq0;
412 int ret;
413
414 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
415 if (ret < 0)
416 return false;
417
418 if (irq0 & ADV7511_INT0_HPD) {
419 regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
420 ADV7511_INT0_HPD);
421 return true;
422 }
423
424 return false;
425 }
426
adv7511_hpd_work(struct work_struct * work)427 static void adv7511_hpd_work(struct work_struct *work)
428 {
429 struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work);
430 enum drm_connector_status status;
431 unsigned int val;
432 int ret;
433
434 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
435 if (ret < 0)
436 status = connector_status_disconnected;
437 else if (val & ADV7511_STATUS_HPD)
438 status = connector_status_connected;
439 else
440 status = connector_status_disconnected;
441
442 /*
443 * The bridge resets its registers on unplug. So when we get a plug
444 * event and we're already supposed to be powered, cycle the bridge to
445 * restore its state.
446 */
447 if (status == connector_status_connected &&
448 adv7511->connector.status == connector_status_disconnected &&
449 adv7511->powered) {
450 regcache_mark_dirty(adv7511->regmap);
451 adv7511_power_on(adv7511);
452 }
453
454 if (adv7511->connector.status != status) {
455 adv7511->connector.status = status;
456
457 if (adv7511->connector.dev) {
458 if (status == connector_status_disconnected)
459 cec_phys_addr_invalidate(adv7511->cec_adap);
460 drm_kms_helper_hotplug_event(adv7511->connector.dev);
461 } else {
462 drm_bridge_hpd_notify(&adv7511->bridge, status);
463 }
464 }
465 }
466
adv7511_irq_process(struct adv7511 * adv7511,bool process_hpd)467 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
468 {
469 unsigned int irq0, irq1;
470 int ret;
471
472 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
473 if (ret < 0)
474 return ret;
475
476 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
477 if (ret < 0)
478 return ret;
479
480 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
481 regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
482
483 if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder)
484 schedule_work(&adv7511->hpd_work);
485
486 if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
487 adv7511->edid_read = true;
488
489 if (adv7511->i2c_main->irq)
490 wake_up_all(&adv7511->wq);
491 }
492
493 #ifdef CONFIG_DRM_I2C_ADV7511_CEC
494 adv7511_cec_irq_process(adv7511, irq1);
495 #endif
496
497 return 0;
498 }
499
adv7511_irq_handler(int irq,void * devid)500 static irqreturn_t adv7511_irq_handler(int irq, void *devid)
501 {
502 struct adv7511 *adv7511 = devid;
503 int ret;
504
505 ret = adv7511_irq_process(adv7511, true);
506 return ret < 0 ? IRQ_NONE : IRQ_HANDLED;
507 }
508
509 /* -----------------------------------------------------------------------------
510 * EDID retrieval
511 */
512
adv7511_wait_for_edid(struct adv7511 * adv7511,int timeout)513 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
514 {
515 int ret;
516
517 if (adv7511->i2c_main->irq) {
518 ret = wait_event_interruptible_timeout(adv7511->wq,
519 adv7511->edid_read, msecs_to_jiffies(timeout));
520 } else {
521 for (; timeout > 0; timeout -= 25) {
522 ret = adv7511_irq_process(adv7511, false);
523 if (ret < 0)
524 break;
525
526 if (adv7511->edid_read)
527 break;
528
529 msleep(25);
530 }
531 }
532
533 return adv7511->edid_read ? 0 : -EIO;
534 }
535
adv7511_get_edid_block(void * data,u8 * buf,unsigned int block,size_t len)536 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
537 size_t len)
538 {
539 struct adv7511 *adv7511 = data;
540 struct i2c_msg xfer[2];
541 uint8_t offset;
542 unsigned int i;
543 int ret;
544
545 if (len > 128)
546 return -EINVAL;
547
548 if (adv7511->current_edid_segment != block / 2) {
549 unsigned int status;
550
551 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
552 &status);
553 if (ret < 0)
554 return ret;
555
556 if (status != 2) {
557 adv7511->edid_read = false;
558 regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
559 block);
560 ret = adv7511_wait_for_edid(adv7511, 200);
561 if (ret < 0)
562 return ret;
563 }
564
565 /* Break this apart, hopefully more I2C controllers will
566 * support 64 byte transfers than 256 byte transfers
567 */
568
569 xfer[0].addr = adv7511->i2c_edid->addr;
570 xfer[0].flags = 0;
571 xfer[0].len = 1;
572 xfer[0].buf = &offset;
573 xfer[1].addr = adv7511->i2c_edid->addr;
574 xfer[1].flags = I2C_M_RD;
575 xfer[1].len = 64;
576 xfer[1].buf = adv7511->edid_buf;
577
578 offset = 0;
579
580 for (i = 0; i < 4; ++i) {
581 ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
582 ARRAY_SIZE(xfer));
583 if (ret < 0)
584 return ret;
585 else if (ret != 2)
586 return -EIO;
587
588 xfer[1].buf += 64;
589 offset += 64;
590 }
591
592 adv7511->current_edid_segment = block / 2;
593 }
594
595 if (block % 2 == 0)
596 memcpy(buf, adv7511->edid_buf, len);
597 else
598 memcpy(buf, adv7511->edid_buf + 128, len);
599
600 return 0;
601 }
602
603 /* -----------------------------------------------------------------------------
604 * ADV75xx helpers
605 */
606
adv7511_get_edid(struct adv7511 * adv7511,struct drm_connector * connector)607 static struct edid *adv7511_get_edid(struct adv7511 *adv7511,
608 struct drm_connector *connector)
609 {
610 struct edid *edid;
611
612 /* Reading the EDID only works if the device is powered */
613 if (!adv7511->powered) {
614 unsigned int edid_i2c_addr =
615 (adv7511->i2c_edid->addr << 1);
616
617 __adv7511_power_on(adv7511);
618
619 /* Reset the EDID_I2C_ADDR register as it might be cleared */
620 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
621 edid_i2c_addr);
622 }
623
624 edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
625
626 if (!adv7511->powered)
627 __adv7511_power_off(adv7511);
628
629 adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
630 drm_detect_hdmi_monitor(edid));
631
632 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
633
634 return edid;
635 }
636
adv7511_get_modes(struct adv7511 * adv7511,struct drm_connector * connector)637 static int adv7511_get_modes(struct adv7511 *adv7511,
638 struct drm_connector *connector)
639 {
640 struct edid *edid;
641 unsigned int count;
642
643 edid = adv7511_get_edid(adv7511, connector);
644
645 drm_connector_update_edid_property(connector, edid);
646 count = drm_add_edid_modes(connector, edid);
647
648 kfree(edid);
649
650 return count;
651 }
652
653 static enum drm_connector_status
adv7511_detect(struct adv7511 * adv7511,struct drm_connector * connector)654 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
655 {
656 enum drm_connector_status status;
657 unsigned int val;
658 bool hpd;
659 int ret;
660
661 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
662 if (ret < 0)
663 return connector_status_disconnected;
664
665 if (val & ADV7511_STATUS_HPD)
666 status = connector_status_connected;
667 else
668 status = connector_status_disconnected;
669
670 hpd = adv7511_hpd(adv7511);
671
672 /* The chip resets itself when the cable is disconnected, so in case
673 * there is a pending HPD interrupt and the cable is connected there was
674 * at least one transition from disconnected to connected and the chip
675 * has to be reinitialized. */
676 if (status == connector_status_connected && hpd && adv7511->powered) {
677 regcache_mark_dirty(adv7511->regmap);
678 adv7511_power_on(adv7511);
679 if (connector)
680 adv7511_get_modes(adv7511, connector);
681 if (adv7511->status == connector_status_connected)
682 status = connector_status_disconnected;
683 } else {
684 /* Renable HPD sensing */
685 if (adv7511->type == ADV7535)
686 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
687 ADV7535_REG_POWER2_HPD_OVERRIDE,
688 ADV7535_REG_POWER2_HPD_OVERRIDE);
689 else
690 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
691 ADV7511_REG_POWER2_HPD_SRC_MASK,
692 ADV7511_REG_POWER2_HPD_SRC_BOTH);
693 }
694
695 adv7511->status = status;
696 return status;
697 }
698
adv7511_mode_valid(struct adv7511 * adv7511,const struct drm_display_mode * mode)699 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
700 const struct drm_display_mode *mode)
701 {
702 if (mode->clock > 165000)
703 return MODE_CLOCK_HIGH;
704
705 return MODE_OK;
706 }
707
adv7511_mode_set(struct adv7511 * adv7511,const struct drm_display_mode * mode,const struct drm_display_mode * adj_mode)708 static void adv7511_mode_set(struct adv7511 *adv7511,
709 const struct drm_display_mode *mode,
710 const struct drm_display_mode *adj_mode)
711 {
712 unsigned int low_refresh_rate;
713 unsigned int hsync_polarity = 0;
714 unsigned int vsync_polarity = 0;
715
716 if (adv7511->embedded_sync) {
717 unsigned int hsync_offset, hsync_len;
718 unsigned int vsync_offset, vsync_len;
719
720 hsync_offset = adj_mode->crtc_hsync_start -
721 adj_mode->crtc_hdisplay;
722 vsync_offset = adj_mode->crtc_vsync_start -
723 adj_mode->crtc_vdisplay;
724 hsync_len = adj_mode->crtc_hsync_end -
725 adj_mode->crtc_hsync_start;
726 vsync_len = adj_mode->crtc_vsync_end -
727 adj_mode->crtc_vsync_start;
728
729 /* The hardware vsync generator has a off-by-one bug */
730 vsync_offset += 1;
731
732 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
733 ((hsync_offset >> 10) & 0x7) << 5);
734 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
735 (hsync_offset >> 2) & 0xff);
736 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
737 ((hsync_offset & 0x3) << 6) |
738 ((hsync_len >> 4) & 0x3f));
739 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
740 ((hsync_len & 0xf) << 4) |
741 ((vsync_offset >> 6) & 0xf));
742 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
743 ((vsync_offset & 0x3f) << 2) |
744 ((vsync_len >> 8) & 0x3));
745 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
746 vsync_len & 0xff);
747
748 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
749 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
750 } else {
751 enum adv7511_sync_polarity mode_hsync_polarity;
752 enum adv7511_sync_polarity mode_vsync_polarity;
753
754 /**
755 * If the input signal is always low or always high we want to
756 * invert or let it passthrough depending on the polarity of the
757 * current mode.
758 **/
759 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
760 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
761 else
762 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
763
764 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
765 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
766 else
767 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
768
769 if (adv7511->hsync_polarity != mode_hsync_polarity &&
770 adv7511->hsync_polarity !=
771 ADV7511_SYNC_POLARITY_PASSTHROUGH)
772 hsync_polarity = 1;
773
774 if (adv7511->vsync_polarity != mode_vsync_polarity &&
775 adv7511->vsync_polarity !=
776 ADV7511_SYNC_POLARITY_PASSTHROUGH)
777 vsync_polarity = 1;
778 }
779
780 if (drm_mode_vrefresh(mode) <= 24)
781 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
782 else if (drm_mode_vrefresh(mode) <= 25)
783 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
784 else if (drm_mode_vrefresh(mode) <= 30)
785 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
786 else
787 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
788
789 if (adv7511->type == ADV7511)
790 regmap_update_bits(adv7511->regmap, 0xfb,
791 0x6, low_refresh_rate << 1);
792 else
793 regmap_update_bits(adv7511->regmap, 0x4a,
794 0xc, low_refresh_rate << 2);
795
796 regmap_update_bits(adv7511->regmap, 0x17,
797 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
798
799 drm_mode_copy(&adv7511->curr_mode, adj_mode);
800
801 /*
802 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
803 * supposed to give better results.
804 */
805
806 adv7511->f_tmds = mode->clock;
807 }
808
809 /* -----------------------------------------------------------------------------
810 * DRM Connector Operations
811 */
812
connector_to_adv7511(struct drm_connector * connector)813 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
814 {
815 return container_of(connector, struct adv7511, connector);
816 }
817
adv7511_connector_get_modes(struct drm_connector * connector)818 static int adv7511_connector_get_modes(struct drm_connector *connector)
819 {
820 struct adv7511 *adv = connector_to_adv7511(connector);
821
822 return adv7511_get_modes(adv, connector);
823 }
824
825 static enum drm_mode_status
adv7511_connector_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)826 adv7511_connector_mode_valid(struct drm_connector *connector,
827 struct drm_display_mode *mode)
828 {
829 struct adv7511 *adv = connector_to_adv7511(connector);
830
831 return adv7511_mode_valid(adv, mode);
832 }
833
834 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
835 .get_modes = adv7511_connector_get_modes,
836 .mode_valid = adv7511_connector_mode_valid,
837 };
838
839 static enum drm_connector_status
adv7511_connector_detect(struct drm_connector * connector,bool force)840 adv7511_connector_detect(struct drm_connector *connector, bool force)
841 {
842 struct adv7511 *adv = connector_to_adv7511(connector);
843
844 return adv7511_detect(adv, connector);
845 }
846
847 static const struct drm_connector_funcs adv7511_connector_funcs = {
848 .fill_modes = drm_helper_probe_single_connector_modes,
849 .detect = adv7511_connector_detect,
850 .destroy = drm_connector_cleanup,
851 .reset = drm_atomic_helper_connector_reset,
852 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
853 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
854 };
855
adv7511_connector_init(struct adv7511 * adv)856 static int adv7511_connector_init(struct adv7511 *adv)
857 {
858 struct drm_bridge *bridge = &adv->bridge;
859 int ret;
860
861 if (!bridge->encoder) {
862 DRM_ERROR("Parent encoder object not found");
863 return -ENODEV;
864 }
865
866 if (adv->i2c_main->irq)
867 adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
868 else
869 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
870 DRM_CONNECTOR_POLL_DISCONNECT;
871
872 ret = drm_connector_init(bridge->dev, &adv->connector,
873 &adv7511_connector_funcs,
874 DRM_MODE_CONNECTOR_HDMIA);
875 if (ret < 0) {
876 DRM_ERROR("Failed to initialize connector with drm\n");
877 return ret;
878 }
879 drm_connector_helper_add(&adv->connector,
880 &adv7511_connector_helper_funcs);
881 drm_connector_attach_encoder(&adv->connector, bridge->encoder);
882
883 return 0;
884 }
885
886 /* -----------------------------------------------------------------------------
887 * DRM Bridge Operations
888 */
889
bridge_to_adv7511(struct drm_bridge * bridge)890 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
891 {
892 return container_of(bridge, struct adv7511, bridge);
893 }
894
adv7511_bridge_enable(struct drm_bridge * bridge)895 static void adv7511_bridge_enable(struct drm_bridge *bridge)
896 {
897 struct adv7511 *adv = bridge_to_adv7511(bridge);
898
899 adv7511_power_on(adv);
900 }
901
adv7511_bridge_disable(struct drm_bridge * bridge)902 static void adv7511_bridge_disable(struct drm_bridge *bridge)
903 {
904 struct adv7511 *adv = bridge_to_adv7511(bridge);
905
906 adv7511_power_off(adv);
907 }
908
adv7511_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adj_mode)909 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
910 const struct drm_display_mode *mode,
911 const struct drm_display_mode *adj_mode)
912 {
913 struct adv7511 *adv = bridge_to_adv7511(bridge);
914
915 adv7511_mode_set(adv, mode, adj_mode);
916 }
917
adv7511_bridge_mode_valid(struct drm_bridge * bridge,const struct drm_display_info * info,const struct drm_display_mode * mode)918 static enum drm_mode_status adv7511_bridge_mode_valid(struct drm_bridge *bridge,
919 const struct drm_display_info *info,
920 const struct drm_display_mode *mode)
921 {
922 struct adv7511 *adv = bridge_to_adv7511(bridge);
923
924 if (adv->type == ADV7533 || adv->type == ADV7535)
925 return adv7533_mode_valid(adv, mode);
926 else
927 return adv7511_mode_valid(adv, mode);
928 }
929
adv7511_bridge_attach(struct drm_bridge * bridge,enum drm_bridge_attach_flags flags)930 static int adv7511_bridge_attach(struct drm_bridge *bridge,
931 enum drm_bridge_attach_flags flags)
932 {
933 struct adv7511 *adv = bridge_to_adv7511(bridge);
934 int ret = 0;
935
936 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
937 ret = adv7511_connector_init(adv);
938 if (ret < 0)
939 return ret;
940 }
941
942 if (adv->i2c_main->irq)
943 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
944 ADV7511_INT0_HPD);
945
946 return ret;
947 }
948
adv7511_bridge_detect(struct drm_bridge * bridge)949 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge)
950 {
951 struct adv7511 *adv = bridge_to_adv7511(bridge);
952
953 return adv7511_detect(adv, NULL);
954 }
955
adv7511_bridge_get_edid(struct drm_bridge * bridge,struct drm_connector * connector)956 static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge,
957 struct drm_connector *connector)
958 {
959 struct adv7511 *adv = bridge_to_adv7511(bridge);
960
961 return adv7511_get_edid(adv, connector);
962 }
963
adv7511_bridge_hpd_notify(struct drm_bridge * bridge,enum drm_connector_status status)964 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge,
965 enum drm_connector_status status)
966 {
967 struct adv7511 *adv = bridge_to_adv7511(bridge);
968
969 if (status == connector_status_disconnected)
970 cec_phys_addr_invalidate(adv->cec_adap);
971 }
972
973 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
974 .enable = adv7511_bridge_enable,
975 .disable = adv7511_bridge_disable,
976 .mode_set = adv7511_bridge_mode_set,
977 .mode_valid = adv7511_bridge_mode_valid,
978 .attach = adv7511_bridge_attach,
979 .detect = adv7511_bridge_detect,
980 .get_edid = adv7511_bridge_get_edid,
981 .hpd_notify = adv7511_bridge_hpd_notify,
982 };
983
984 /* -----------------------------------------------------------------------------
985 * Probe & remove
986 */
987
988 static const char * const adv7511_supply_names[] = {
989 "avdd",
990 "dvdd",
991 "pvdd",
992 "bgvdd",
993 "dvdd-3v",
994 };
995
996 static const char * const adv7533_supply_names[] = {
997 "avdd",
998 "dvdd",
999 "pvdd",
1000 "a2vdd",
1001 "v3p3",
1002 "v1p2",
1003 };
1004
adv7511_init_regulators(struct adv7511 * adv)1005 static int adv7511_init_regulators(struct adv7511 *adv)
1006 {
1007 struct device *dev = &adv->i2c_main->dev;
1008 const char * const *supply_names;
1009 unsigned int i;
1010 int ret;
1011
1012 if (adv->type == ADV7511) {
1013 supply_names = adv7511_supply_names;
1014 adv->num_supplies = ARRAY_SIZE(adv7511_supply_names);
1015 } else {
1016 supply_names = adv7533_supply_names;
1017 adv->num_supplies = ARRAY_SIZE(adv7533_supply_names);
1018 }
1019
1020 adv->supplies = devm_kcalloc(dev, adv->num_supplies,
1021 sizeof(*adv->supplies), GFP_KERNEL);
1022 if (!adv->supplies)
1023 return -ENOMEM;
1024
1025 for (i = 0; i < adv->num_supplies; i++)
1026 adv->supplies[i].supply = supply_names[i];
1027
1028 ret = devm_regulator_bulk_get(dev, adv->num_supplies, adv->supplies);
1029 if (ret)
1030 return ret;
1031
1032 return regulator_bulk_enable(adv->num_supplies, adv->supplies);
1033 }
1034
adv7511_uninit_regulators(struct adv7511 * adv)1035 static void adv7511_uninit_regulators(struct adv7511 *adv)
1036 {
1037 regulator_bulk_disable(adv->num_supplies, adv->supplies);
1038 }
1039
adv7511_cec_register_volatile(struct device * dev,unsigned int reg)1040 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
1041 {
1042 struct i2c_client *i2c = to_i2c_client(dev);
1043 struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1044
1045 reg -= adv7511->reg_cec_offset;
1046
1047 switch (reg) {
1048 case ADV7511_REG_CEC_RX1_FRAME_HDR:
1049 case ADV7511_REG_CEC_RX1_FRAME_DATA0 ... ADV7511_REG_CEC_RX1_FRAME_DATA0 + 14:
1050 case ADV7511_REG_CEC_RX1_FRAME_LEN:
1051 case ADV7511_REG_CEC_RX2_FRAME_HDR:
1052 case ADV7511_REG_CEC_RX2_FRAME_DATA0 ... ADV7511_REG_CEC_RX2_FRAME_DATA0 + 14:
1053 case ADV7511_REG_CEC_RX2_FRAME_LEN:
1054 case ADV7511_REG_CEC_RX3_FRAME_HDR:
1055 case ADV7511_REG_CEC_RX3_FRAME_DATA0 ... ADV7511_REG_CEC_RX3_FRAME_DATA0 + 14:
1056 case ADV7511_REG_CEC_RX3_FRAME_LEN:
1057 case ADV7511_REG_CEC_RX_STATUS:
1058 case ADV7511_REG_CEC_RX_BUFFERS:
1059 case ADV7511_REG_CEC_TX_LOW_DRV_CNT:
1060 return true;
1061 }
1062
1063 return false;
1064 }
1065
1066 static const struct regmap_config adv7511_cec_regmap_config = {
1067 .reg_bits = 8,
1068 .val_bits = 8,
1069
1070 .max_register = 0xff,
1071 .cache_type = REGCACHE_RBTREE,
1072 .volatile_reg = adv7511_cec_register_volatile,
1073 };
1074
adv7511_init_cec_regmap(struct adv7511 * adv)1075 static int adv7511_init_cec_regmap(struct adv7511 *adv)
1076 {
1077 int ret;
1078
1079 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec",
1080 ADV7511_CEC_I2C_ADDR_DEFAULT);
1081 if (IS_ERR(adv->i2c_cec))
1082 return PTR_ERR(adv->i2c_cec);
1083
1084 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR,
1085 adv->i2c_cec->addr << 1);
1086
1087 i2c_set_clientdata(adv->i2c_cec, adv);
1088
1089 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
1090 &adv7511_cec_regmap_config);
1091 if (IS_ERR(adv->regmap_cec)) {
1092 ret = PTR_ERR(adv->regmap_cec);
1093 goto err;
1094 }
1095
1096 if (adv->type == ADV7533 || adv->type == ADV7535) {
1097 ret = adv7533_patch_cec_registers(adv);
1098 if (ret)
1099 goto err;
1100
1101 adv->reg_cec_offset = ADV7533_REG_CEC_OFFSET;
1102 }
1103
1104 return 0;
1105 err:
1106 i2c_unregister_device(adv->i2c_cec);
1107 return ret;
1108 }
1109
adv7511_parse_dt(struct device_node * np,struct adv7511_link_config * config)1110 static int adv7511_parse_dt(struct device_node *np,
1111 struct adv7511_link_config *config)
1112 {
1113 const char *str;
1114 int ret;
1115
1116 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
1117 if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
1118 config->input_color_depth != 12)
1119 return -EINVAL;
1120
1121 ret = of_property_read_string(np, "adi,input-colorspace", &str);
1122 if (ret < 0)
1123 return ret;
1124
1125 if (!strcmp(str, "rgb"))
1126 config->input_colorspace = HDMI_COLORSPACE_RGB;
1127 else if (!strcmp(str, "yuv422"))
1128 config->input_colorspace = HDMI_COLORSPACE_YUV422;
1129 else if (!strcmp(str, "yuv444"))
1130 config->input_colorspace = HDMI_COLORSPACE_YUV444;
1131 else
1132 return -EINVAL;
1133
1134 ret = of_property_read_string(np, "adi,input-clock", &str);
1135 if (ret < 0)
1136 return ret;
1137
1138 if (!strcmp(str, "1x"))
1139 config->input_clock = ADV7511_INPUT_CLOCK_1X;
1140 else if (!strcmp(str, "2x"))
1141 config->input_clock = ADV7511_INPUT_CLOCK_2X;
1142 else if (!strcmp(str, "ddr"))
1143 config->input_clock = ADV7511_INPUT_CLOCK_DDR;
1144 else
1145 return -EINVAL;
1146
1147 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
1148 config->input_clock != ADV7511_INPUT_CLOCK_1X) {
1149 ret = of_property_read_u32(np, "adi,input-style",
1150 &config->input_style);
1151 if (ret)
1152 return ret;
1153
1154 if (config->input_style < 1 || config->input_style > 3)
1155 return -EINVAL;
1156
1157 ret = of_property_read_string(np, "adi,input-justification",
1158 &str);
1159 if (ret < 0)
1160 return ret;
1161
1162 if (!strcmp(str, "left"))
1163 config->input_justification =
1164 ADV7511_INPUT_JUSTIFICATION_LEFT;
1165 else if (!strcmp(str, "evenly"))
1166 config->input_justification =
1167 ADV7511_INPUT_JUSTIFICATION_EVENLY;
1168 else if (!strcmp(str, "right"))
1169 config->input_justification =
1170 ADV7511_INPUT_JUSTIFICATION_RIGHT;
1171 else
1172 return -EINVAL;
1173
1174 } else {
1175 config->input_style = 1;
1176 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
1177 }
1178
1179 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
1180 if (config->clock_delay < -1200 || config->clock_delay > 1600)
1181 return -EINVAL;
1182
1183 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
1184
1185 /* Hardcode the sync pulse configurations for now. */
1186 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
1187 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1188 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1189
1190 return 0;
1191 }
1192
adv7511_probe(struct i2c_client * i2c)1193 static int adv7511_probe(struct i2c_client *i2c)
1194 {
1195 const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
1196 struct adv7511_link_config link_config;
1197 struct adv7511 *adv7511;
1198 struct device *dev = &i2c->dev;
1199 unsigned int val;
1200 int ret;
1201
1202 if (!dev->of_node)
1203 return -EINVAL;
1204
1205 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
1206 if (!adv7511)
1207 return -ENOMEM;
1208
1209 adv7511->i2c_main = i2c;
1210 adv7511->powered = false;
1211 adv7511->status = connector_status_disconnected;
1212
1213 if (dev->of_node)
1214 adv7511->type = (enum adv7511_type)of_device_get_match_data(dev);
1215 else
1216 adv7511->type = id->driver_data;
1217
1218 memset(&link_config, 0, sizeof(link_config));
1219
1220 if (adv7511->type == ADV7511)
1221 ret = adv7511_parse_dt(dev->of_node, &link_config);
1222 else
1223 ret = adv7533_parse_dt(dev->of_node, adv7511);
1224 if (ret)
1225 return ret;
1226
1227 ret = adv7511_init_regulators(adv7511);
1228 if (ret)
1229 return dev_err_probe(dev, ret, "failed to init regulators\n");
1230
1231 /*
1232 * The power down GPIO is optional. If present, toggle it from active to
1233 * inactive to wake up the encoder.
1234 */
1235 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
1236 if (IS_ERR(adv7511->gpio_pd)) {
1237 ret = PTR_ERR(adv7511->gpio_pd);
1238 goto uninit_regulators;
1239 }
1240
1241 if (adv7511->gpio_pd) {
1242 usleep_range(5000, 6000);
1243 gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
1244 }
1245
1246 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
1247 if (IS_ERR(adv7511->regmap)) {
1248 ret = PTR_ERR(adv7511->regmap);
1249 goto uninit_regulators;
1250 }
1251
1252 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
1253 if (ret)
1254 goto uninit_regulators;
1255 dev_dbg(dev, "Rev. %d\n", val);
1256
1257 if (adv7511->type == ADV7511)
1258 ret = regmap_register_patch(adv7511->regmap,
1259 adv7511_fixed_registers,
1260 ARRAY_SIZE(adv7511_fixed_registers));
1261 else
1262 ret = adv7533_patch_registers(adv7511);
1263 if (ret)
1264 goto uninit_regulators;
1265
1266 adv7511_packet_disable(adv7511, 0xffff);
1267
1268 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",
1269 ADV7511_EDID_I2C_ADDR_DEFAULT);
1270 if (IS_ERR(adv7511->i2c_edid)) {
1271 ret = PTR_ERR(adv7511->i2c_edid);
1272 goto uninit_regulators;
1273 }
1274
1275 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
1276 adv7511->i2c_edid->addr << 1);
1277
1278 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet",
1279 ADV7511_PACKET_I2C_ADDR_DEFAULT);
1280 if (IS_ERR(adv7511->i2c_packet)) {
1281 ret = PTR_ERR(adv7511->i2c_packet);
1282 goto err_i2c_unregister_edid;
1283 }
1284
1285 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
1286 adv7511->i2c_packet->addr << 1);
1287
1288 ret = adv7511_init_cec_regmap(adv7511);
1289 if (ret)
1290 goto err_i2c_unregister_packet;
1291
1292 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
1293
1294 if (i2c->irq) {
1295 init_waitqueue_head(&adv7511->wq);
1296
1297 ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
1298 adv7511_irq_handler,
1299 IRQF_ONESHOT, dev_name(dev),
1300 adv7511);
1301 if (ret)
1302 goto err_unregister_cec;
1303 }
1304
1305 adv7511_power_off(adv7511);
1306
1307 i2c_set_clientdata(i2c, adv7511);
1308
1309 if (adv7511->type == ADV7511)
1310 adv7511_set_link_config(adv7511, &link_config);
1311
1312 ret = adv7511_cec_init(dev, adv7511);
1313 if (ret)
1314 goto err_unregister_cec;
1315
1316 adv7511->bridge.funcs = &adv7511_bridge_funcs;
1317 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID;
1318 if (adv7511->i2c_main->irq)
1319 adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD;
1320
1321 adv7511->bridge.of_node = dev->of_node;
1322 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1323
1324 drm_bridge_add(&adv7511->bridge);
1325
1326 adv7511_audio_init(dev, adv7511);
1327
1328 if (adv7511->type == ADV7533 || adv7511->type == ADV7535) {
1329 ret = adv7533_attach_dsi(adv7511);
1330 if (ret)
1331 goto err_unregister_audio;
1332 }
1333
1334 return 0;
1335
1336 err_unregister_audio:
1337 adv7511_audio_exit(adv7511);
1338 drm_bridge_remove(&adv7511->bridge);
1339 err_unregister_cec:
1340 cec_unregister_adapter(adv7511->cec_adap);
1341 i2c_unregister_device(adv7511->i2c_cec);
1342 clk_disable_unprepare(adv7511->cec_clk);
1343 err_i2c_unregister_packet:
1344 i2c_unregister_device(adv7511->i2c_packet);
1345 err_i2c_unregister_edid:
1346 i2c_unregister_device(adv7511->i2c_edid);
1347 uninit_regulators:
1348 adv7511_uninit_regulators(adv7511);
1349
1350 return ret;
1351 }
1352
adv7511_remove(struct i2c_client * i2c)1353 static void adv7511_remove(struct i2c_client *i2c)
1354 {
1355 struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1356
1357 adv7511_uninit_regulators(adv7511);
1358
1359 drm_bridge_remove(&adv7511->bridge);
1360
1361 adv7511_audio_exit(adv7511);
1362
1363 cec_unregister_adapter(adv7511->cec_adap);
1364 i2c_unregister_device(adv7511->i2c_cec);
1365 clk_disable_unprepare(adv7511->cec_clk);
1366
1367 i2c_unregister_device(adv7511->i2c_packet);
1368 i2c_unregister_device(adv7511->i2c_edid);
1369 }
1370
1371 static const struct i2c_device_id adv7511_i2c_ids[] = {
1372 { "adv7511", ADV7511 },
1373 { "adv7511w", ADV7511 },
1374 { "adv7513", ADV7511 },
1375 { "adv7533", ADV7533 },
1376 { "adv7535", ADV7535 },
1377 { }
1378 };
1379 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
1380
1381 static const struct of_device_id adv7511_of_ids[] = {
1382 { .compatible = "adi,adv7511", .data = (void *)ADV7511 },
1383 { .compatible = "adi,adv7511w", .data = (void *)ADV7511 },
1384 { .compatible = "adi,adv7513", .data = (void *)ADV7511 },
1385 { .compatible = "adi,adv7533", .data = (void *)ADV7533 },
1386 { .compatible = "adi,adv7535", .data = (void *)ADV7535 },
1387 { }
1388 };
1389 MODULE_DEVICE_TABLE(of, adv7511_of_ids);
1390
1391 static struct mipi_dsi_driver adv7533_dsi_driver = {
1392 .driver.name = "adv7533",
1393 };
1394
1395 static struct i2c_driver adv7511_driver = {
1396 .driver = {
1397 .name = "adv7511",
1398 .of_match_table = adv7511_of_ids,
1399 },
1400 .id_table = adv7511_i2c_ids,
1401 .probe = adv7511_probe,
1402 .remove = adv7511_remove,
1403 };
1404
adv7511_init(void)1405 static int __init adv7511_init(void)
1406 {
1407 int ret;
1408
1409 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
1410 ret = mipi_dsi_driver_register(&adv7533_dsi_driver);
1411 if (ret)
1412 return ret;
1413 }
1414
1415 ret = i2c_add_driver(&adv7511_driver);
1416 if (ret) {
1417 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1418 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1419 }
1420
1421 return ret;
1422 }
1423 module_init(adv7511_init);
1424
adv7511_exit(void)1425 static void __exit adv7511_exit(void)
1426 {
1427 i2c_del_driver(&adv7511_driver);
1428
1429 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1430 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1431 }
1432 module_exit(adv7511_exit);
1433
1434 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
1435 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
1436 MODULE_LICENSE("GPL");
1437