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. 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 /* HACK: If we don't delay here edid probing doesn't work properly */
367 msleep(200);
368 }
369
adv7511_power_on(struct adv7511 * adv7511)370 static void adv7511_power_on(struct adv7511 *adv7511)
371 {
372 __adv7511_power_on(adv7511);
373
374 /*
375 * Most of the registers are reset during power down or when HPD is low.
376 */
377 regcache_sync(adv7511->regmap);
378
379 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
380 adv7533_dsi_power_on(adv7511);
381 adv7511->powered = true;
382 }
383
__adv7511_power_off(struct adv7511 * adv7511)384 static void __adv7511_power_off(struct adv7511 *adv7511)
385 {
386 /* TODO: setup additional power down modes */
387 if (adv7511->type == ADV7535)
388 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
389 ADV7535_REG_POWER2_HPD_OVERRIDE, 0);
390
391 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
392 ADV7511_POWER_POWER_DOWN,
393 ADV7511_POWER_POWER_DOWN);
394 regmap_update_bits(adv7511->regmap,
395 ADV7511_REG_INT_ENABLE(1),
396 ADV7511_INT1_DDC_ERROR, 0);
397 regcache_mark_dirty(adv7511->regmap);
398 }
399
adv7511_power_off(struct adv7511 * adv7511)400 static void adv7511_power_off(struct adv7511 *adv7511)
401 {
402 __adv7511_power_off(adv7511);
403 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
404 adv7533_dsi_power_off(adv7511);
405 adv7511->powered = false;
406 }
407
408 /* -----------------------------------------------------------------------------
409 * Interrupt and hotplug detection
410 */
411
adv7511_hpd(struct adv7511 * adv7511)412 static bool adv7511_hpd(struct adv7511 *adv7511)
413 {
414 unsigned int irq0;
415 int ret;
416
417 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
418 if (ret < 0)
419 return false;
420
421 if (irq0 & ADV7511_INT0_HPD) {
422 regmap_write(adv7511->regmap, ADV7511_REG_INT(0),
423 ADV7511_INT0_HPD);
424 return true;
425 }
426
427 return false;
428 }
429
adv7511_hpd_work(struct work_struct * work)430 static void adv7511_hpd_work(struct work_struct *work)
431 {
432 struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work);
433 enum drm_connector_status status;
434 unsigned int val;
435 int ret;
436
437 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
438 if (ret < 0)
439 status = connector_status_disconnected;
440 else if (val & ADV7511_STATUS_HPD)
441 status = connector_status_connected;
442 else
443 status = connector_status_disconnected;
444
445 /*
446 * The bridge resets its registers on unplug. So when we get a plug
447 * event and we're already supposed to be powered, cycle the bridge to
448 * restore its state.
449 */
450 if (status == connector_status_connected &&
451 adv7511->connector.status == connector_status_disconnected &&
452 adv7511->powered) {
453 regcache_mark_dirty(adv7511->regmap);
454 adv7511_power_on(adv7511);
455 }
456
457 if (adv7511->connector.status != status) {
458 adv7511->connector.status = status;
459
460 if (adv7511->connector.dev) {
461 if (status == connector_status_disconnected)
462 cec_phys_addr_invalidate(adv7511->cec_adap);
463 drm_kms_helper_hotplug_event(adv7511->connector.dev);
464 } else {
465 drm_bridge_hpd_notify(&adv7511->bridge, status);
466 }
467 }
468 }
469
adv7511_irq_process(struct adv7511 * adv7511,bool process_hpd)470 static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)
471 {
472 unsigned int irq0, irq1;
473 int ret;
474
475 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0);
476 if (ret < 0)
477 return ret;
478
479 ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1);
480 if (ret < 0)
481 return ret;
482
483 regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0);
484 regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1);
485
486 if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder)
487 schedule_work(&adv7511->hpd_work);
488
489 if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) {
490 adv7511->edid_read = true;
491
492 if (adv7511->i2c_main->irq)
493 wake_up_all(&adv7511->wq);
494 }
495
496 #ifdef CONFIG_DRM_I2C_ADV7511_CEC
497 adv7511_cec_irq_process(adv7511, irq1);
498 #endif
499
500 return 0;
501 }
502
adv7511_irq_handler(int irq,void * devid)503 static irqreturn_t adv7511_irq_handler(int irq, void *devid)
504 {
505 struct adv7511 *adv7511 = devid;
506 int ret;
507
508 ret = adv7511_irq_process(adv7511, true);
509 return ret < 0 ? IRQ_NONE : IRQ_HANDLED;
510 }
511
512 /* -----------------------------------------------------------------------------
513 * EDID retrieval
514 */
515
adv7511_wait_for_edid(struct adv7511 * adv7511,int timeout)516 static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout)
517 {
518 int ret;
519
520 if (adv7511->i2c_main->irq) {
521 ret = wait_event_interruptible_timeout(adv7511->wq,
522 adv7511->edid_read, msecs_to_jiffies(timeout));
523 } else {
524 for (; timeout > 0; timeout -= 25) {
525 ret = adv7511_irq_process(adv7511, false);
526 if (ret < 0)
527 break;
528
529 if (adv7511->edid_read)
530 break;
531
532 msleep(25);
533 }
534 }
535
536 return adv7511->edid_read ? 0 : -EIO;
537 }
538
adv7511_get_edid_block(void * data,u8 * buf,unsigned int block,size_t len)539 static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block,
540 size_t len)
541 {
542 struct adv7511 *adv7511 = data;
543 struct i2c_msg xfer[2];
544 uint8_t offset;
545 unsigned int i;
546 int ret;
547
548 if (len > 128)
549 return -EINVAL;
550
551 if (adv7511->current_edid_segment != block / 2) {
552 unsigned int status;
553
554 ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS,
555 &status);
556 if (ret < 0)
557 return ret;
558
559 if (status != 2) {
560 adv7511->edid_read = false;
561 regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT,
562 block);
563 ret = adv7511_wait_for_edid(adv7511, 200);
564 if (ret < 0)
565 return ret;
566 }
567
568 /* Break this apart, hopefully more I2C controllers will
569 * support 64 byte transfers than 256 byte transfers
570 */
571
572 xfer[0].addr = adv7511->i2c_edid->addr;
573 xfer[0].flags = 0;
574 xfer[0].len = 1;
575 xfer[0].buf = &offset;
576 xfer[1].addr = adv7511->i2c_edid->addr;
577 xfer[1].flags = I2C_M_RD;
578 xfer[1].len = 64;
579 xfer[1].buf = adv7511->edid_buf;
580
581 offset = 0;
582
583 for (i = 0; i < 4; ++i) {
584 ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer,
585 ARRAY_SIZE(xfer));
586 if (ret < 0)
587 return ret;
588 else if (ret != 2)
589 return -EIO;
590
591 xfer[1].buf += 64;
592 offset += 64;
593 }
594
595 adv7511->current_edid_segment = block / 2;
596 }
597
598 if (block % 2 == 0)
599 memcpy(buf, adv7511->edid_buf, len);
600 else
601 memcpy(buf, adv7511->edid_buf + 128, len);
602
603 return 0;
604 }
605
606 /* -----------------------------------------------------------------------------
607 * ADV75xx helpers
608 */
609
adv7511_get_edid(struct adv7511 * adv7511,struct drm_connector * connector)610 static struct edid *adv7511_get_edid(struct adv7511 *adv7511,
611 struct drm_connector *connector)
612 {
613 struct edid *edid;
614
615 /* Reading the EDID only works if the device is powered */
616 if (!adv7511->powered) {
617 unsigned int edid_i2c_addr =
618 (adv7511->i2c_edid->addr << 1);
619
620 __adv7511_power_on(adv7511);
621
622 /* Reset the EDID_I2C_ADDR register as it might be cleared */
623 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
624 edid_i2c_addr);
625 }
626
627 edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511);
628
629 if (!adv7511->powered)
630 __adv7511_power_off(adv7511);
631
632 adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
633 drm_detect_hdmi_monitor(edid));
634
635 cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
636
637 return edid;
638 }
639
adv7511_get_modes(struct adv7511 * adv7511,struct drm_connector * connector)640 static int adv7511_get_modes(struct adv7511 *adv7511,
641 struct drm_connector *connector)
642 {
643 struct edid *edid;
644 unsigned int count;
645
646 edid = adv7511_get_edid(adv7511, connector);
647
648 drm_connector_update_edid_property(connector, edid);
649 count = drm_add_edid_modes(connector, edid);
650
651 kfree(edid);
652
653 return count;
654 }
655
656 static enum drm_connector_status
adv7511_detect(struct adv7511 * adv7511,struct drm_connector * connector)657 adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
658 {
659 enum drm_connector_status status;
660 unsigned int val;
661 bool hpd;
662 int ret;
663
664 ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val);
665 if (ret < 0)
666 return connector_status_disconnected;
667
668 if (val & ADV7511_STATUS_HPD)
669 status = connector_status_connected;
670 else
671 status = connector_status_disconnected;
672
673 hpd = adv7511_hpd(adv7511);
674
675 /* The chip resets itself when the cable is disconnected, so in case
676 * there is a pending HPD interrupt and the cable is connected there was
677 * at least one transition from disconnected to connected and the chip
678 * has to be reinitialized. */
679 if (status == connector_status_connected && hpd && adv7511->powered) {
680 regcache_mark_dirty(adv7511->regmap);
681 adv7511_power_on(adv7511);
682 if (connector)
683 adv7511_get_modes(adv7511, connector);
684 if (adv7511->status == connector_status_connected)
685 status = connector_status_disconnected;
686 } else {
687 /* Renable HPD sensing */
688 if (adv7511->type == ADV7535)
689 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
690 ADV7535_REG_POWER2_HPD_OVERRIDE,
691 ADV7535_REG_POWER2_HPD_OVERRIDE);
692 else
693 regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2,
694 ADV7511_REG_POWER2_HPD_SRC_MASK,
695 ADV7511_REG_POWER2_HPD_SRC_BOTH);
696 }
697
698 adv7511->status = status;
699 return status;
700 }
701
adv7511_mode_valid(struct adv7511 * adv7511,struct drm_display_mode * mode)702 static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
703 struct drm_display_mode *mode)
704 {
705 if (mode->clock > 165000)
706 return MODE_CLOCK_HIGH;
707
708 return MODE_OK;
709 }
710
adv7511_mode_set(struct adv7511 * adv7511,const struct drm_display_mode * mode,const struct drm_display_mode * adj_mode)711 static void adv7511_mode_set(struct adv7511 *adv7511,
712 const struct drm_display_mode *mode,
713 const struct drm_display_mode *adj_mode)
714 {
715 unsigned int low_refresh_rate;
716 unsigned int hsync_polarity = 0;
717 unsigned int vsync_polarity = 0;
718
719 if (adv7511->embedded_sync) {
720 unsigned int hsync_offset, hsync_len;
721 unsigned int vsync_offset, vsync_len;
722
723 hsync_offset = adj_mode->crtc_hsync_start -
724 adj_mode->crtc_hdisplay;
725 vsync_offset = adj_mode->crtc_vsync_start -
726 adj_mode->crtc_vdisplay;
727 hsync_len = adj_mode->crtc_hsync_end -
728 adj_mode->crtc_hsync_start;
729 vsync_len = adj_mode->crtc_vsync_end -
730 adj_mode->crtc_vsync_start;
731
732 /* The hardware vsync generator has a off-by-one bug */
733 vsync_offset += 1;
734
735 regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB,
736 ((hsync_offset >> 10) & 0x7) << 5);
737 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0),
738 (hsync_offset >> 2) & 0xff);
739 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1),
740 ((hsync_offset & 0x3) << 6) |
741 ((hsync_len >> 4) & 0x3f));
742 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2),
743 ((hsync_len & 0xf) << 4) |
744 ((vsync_offset >> 6) & 0xf));
745 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3),
746 ((vsync_offset & 0x3f) << 2) |
747 ((vsync_len >> 8) & 0x3));
748 regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4),
749 vsync_len & 0xff);
750
751 hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC);
752 vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC);
753 } else {
754 enum adv7511_sync_polarity mode_hsync_polarity;
755 enum adv7511_sync_polarity mode_vsync_polarity;
756
757 /**
758 * If the input signal is always low or always high we want to
759 * invert or let it passthrough depending on the polarity of the
760 * current mode.
761 **/
762 if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC)
763 mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW;
764 else
765 mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
766
767 if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC)
768 mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW;
769 else
770 mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH;
771
772 if (adv7511->hsync_polarity != mode_hsync_polarity &&
773 adv7511->hsync_polarity !=
774 ADV7511_SYNC_POLARITY_PASSTHROUGH)
775 hsync_polarity = 1;
776
777 if (adv7511->vsync_polarity != mode_vsync_polarity &&
778 adv7511->vsync_polarity !=
779 ADV7511_SYNC_POLARITY_PASSTHROUGH)
780 vsync_polarity = 1;
781 }
782
783 if (drm_mode_vrefresh(mode) <= 24)
784 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ;
785 else if (drm_mode_vrefresh(mode) <= 25)
786 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ;
787 else if (drm_mode_vrefresh(mode) <= 30)
788 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ;
789 else
790 low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE;
791
792 regmap_update_bits(adv7511->regmap, 0xfb,
793 0x6, low_refresh_rate << 1);
794 regmap_update_bits(adv7511->regmap, 0x17,
795 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
796
797 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
798 adv7533_mode_set(adv7511, adj_mode);
799
800 drm_mode_copy(&adv7511->curr_mode, adj_mode);
801
802 /*
803 * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is
804 * supposed to give better results.
805 */
806
807 adv7511->f_tmds = mode->clock;
808 }
809
810 /* -----------------------------------------------------------------------------
811 * DRM Connector Operations
812 */
813
connector_to_adv7511(struct drm_connector * connector)814 static struct adv7511 *connector_to_adv7511(struct drm_connector *connector)
815 {
816 return container_of(connector, struct adv7511, connector);
817 }
818
adv7511_connector_get_modes(struct drm_connector * connector)819 static int adv7511_connector_get_modes(struct drm_connector *connector)
820 {
821 struct adv7511 *adv = connector_to_adv7511(connector);
822
823 return adv7511_get_modes(adv, connector);
824 }
825
826 static enum drm_mode_status
adv7511_connector_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)827 adv7511_connector_mode_valid(struct drm_connector *connector,
828 struct drm_display_mode *mode)
829 {
830 struct adv7511 *adv = connector_to_adv7511(connector);
831
832 return adv7511_mode_valid(adv, mode);
833 }
834
835 static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = {
836 .get_modes = adv7511_connector_get_modes,
837 .mode_valid = adv7511_connector_mode_valid,
838 };
839
840 static enum drm_connector_status
adv7511_connector_detect(struct drm_connector * connector,bool force)841 adv7511_connector_detect(struct drm_connector *connector, bool force)
842 {
843 struct adv7511 *adv = connector_to_adv7511(connector);
844
845 return adv7511_detect(adv, connector);
846 }
847
848 static const struct drm_connector_funcs adv7511_connector_funcs = {
849 .fill_modes = drm_helper_probe_single_connector_modes,
850 .detect = adv7511_connector_detect,
851 .destroy = drm_connector_cleanup,
852 .reset = drm_atomic_helper_connector_reset,
853 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
854 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
855 };
856
adv7511_connector_init(struct adv7511 * adv)857 static int adv7511_connector_init(struct adv7511 *adv)
858 {
859 struct drm_bridge *bridge = &adv->bridge;
860 int ret;
861
862 if (!bridge->encoder) {
863 DRM_ERROR("Parent encoder object not found");
864 return -ENODEV;
865 }
866
867 if (adv->i2c_main->irq)
868 adv->connector.polled = DRM_CONNECTOR_POLL_HPD;
869 else
870 adv->connector.polled = DRM_CONNECTOR_POLL_CONNECT |
871 DRM_CONNECTOR_POLL_DISCONNECT;
872
873 ret = drm_connector_init(bridge->dev, &adv->connector,
874 &adv7511_connector_funcs,
875 DRM_MODE_CONNECTOR_HDMIA);
876 if (ret < 0) {
877 DRM_ERROR("Failed to initialize connector with drm\n");
878 return ret;
879 }
880 drm_connector_helper_add(&adv->connector,
881 &adv7511_connector_helper_funcs);
882 drm_connector_attach_encoder(&adv->connector, bridge->encoder);
883
884 return 0;
885 }
886
887 /* -----------------------------------------------------------------------------
888 * DRM Bridge Operations
889 */
890
bridge_to_adv7511(struct drm_bridge * bridge)891 static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge)
892 {
893 return container_of(bridge, struct adv7511, bridge);
894 }
895
adv7511_bridge_enable(struct drm_bridge * bridge)896 static void adv7511_bridge_enable(struct drm_bridge *bridge)
897 {
898 struct adv7511 *adv = bridge_to_adv7511(bridge);
899
900 adv7511_power_on(adv);
901 }
902
adv7511_bridge_disable(struct drm_bridge * bridge)903 static void adv7511_bridge_disable(struct drm_bridge *bridge)
904 {
905 struct adv7511 *adv = bridge_to_adv7511(bridge);
906
907 adv7511_power_off(adv);
908 }
909
adv7511_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adj_mode)910 static void adv7511_bridge_mode_set(struct drm_bridge *bridge,
911 const struct drm_display_mode *mode,
912 const struct drm_display_mode *adj_mode)
913 {
914 struct adv7511 *adv = bridge_to_adv7511(bridge);
915
916 adv7511_mode_set(adv, mode, adj_mode);
917 }
918
adv7511_bridge_attach(struct drm_bridge * bridge,enum drm_bridge_attach_flags flags)919 static int adv7511_bridge_attach(struct drm_bridge *bridge,
920 enum drm_bridge_attach_flags flags)
921 {
922 struct adv7511 *adv = bridge_to_adv7511(bridge);
923 int ret = 0;
924
925 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
926 ret = adv7511_connector_init(adv);
927 if (ret < 0)
928 return ret;
929 }
930
931 if (adv->type == ADV7533 || adv->type == ADV7535)
932 ret = adv7533_attach_dsi(adv);
933
934 if (adv->i2c_main->irq)
935 regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
936 ADV7511_INT0_HPD);
937
938 return ret;
939 }
940
adv7511_bridge_detect(struct drm_bridge * bridge)941 static enum drm_connector_status adv7511_bridge_detect(struct drm_bridge *bridge)
942 {
943 struct adv7511 *adv = bridge_to_adv7511(bridge);
944
945 return adv7511_detect(adv, NULL);
946 }
947
adv7511_bridge_get_edid(struct drm_bridge * bridge,struct drm_connector * connector)948 static struct edid *adv7511_bridge_get_edid(struct drm_bridge *bridge,
949 struct drm_connector *connector)
950 {
951 struct adv7511 *adv = bridge_to_adv7511(bridge);
952
953 return adv7511_get_edid(adv, connector);
954 }
955
adv7511_bridge_hpd_notify(struct drm_bridge * bridge,enum drm_connector_status status)956 static void adv7511_bridge_hpd_notify(struct drm_bridge *bridge,
957 enum drm_connector_status status)
958 {
959 struct adv7511 *adv = bridge_to_adv7511(bridge);
960
961 if (status == connector_status_disconnected)
962 cec_phys_addr_invalidate(adv->cec_adap);
963 }
964
965 static const struct drm_bridge_funcs adv7511_bridge_funcs = {
966 .enable = adv7511_bridge_enable,
967 .disable = adv7511_bridge_disable,
968 .mode_set = adv7511_bridge_mode_set,
969 .attach = adv7511_bridge_attach,
970 .detect = adv7511_bridge_detect,
971 .get_edid = adv7511_bridge_get_edid,
972 .hpd_notify = adv7511_bridge_hpd_notify,
973 };
974
975 /* -----------------------------------------------------------------------------
976 * Probe & remove
977 */
978
979 static const char * const adv7511_supply_names[] = {
980 "avdd",
981 "dvdd",
982 "pvdd",
983 "bgvdd",
984 "dvdd-3v",
985 };
986
987 static const char * const adv7533_supply_names[] = {
988 "avdd",
989 "dvdd",
990 "pvdd",
991 "a2vdd",
992 "v3p3",
993 "v1p2",
994 };
995
adv7511_init_regulators(struct adv7511 * adv)996 static int adv7511_init_regulators(struct adv7511 *adv)
997 {
998 struct device *dev = &adv->i2c_main->dev;
999 const char * const *supply_names;
1000 unsigned int i;
1001 int ret;
1002
1003 if (adv->type == ADV7511) {
1004 supply_names = adv7511_supply_names;
1005 adv->num_supplies = ARRAY_SIZE(adv7511_supply_names);
1006 } else {
1007 supply_names = adv7533_supply_names;
1008 adv->num_supplies = ARRAY_SIZE(adv7533_supply_names);
1009 }
1010
1011 adv->supplies = devm_kcalloc(dev, adv->num_supplies,
1012 sizeof(*adv->supplies), GFP_KERNEL);
1013 if (!adv->supplies)
1014 return -ENOMEM;
1015
1016 for (i = 0; i < adv->num_supplies; i++)
1017 adv->supplies[i].supply = supply_names[i];
1018
1019 ret = devm_regulator_bulk_get(dev, adv->num_supplies, adv->supplies);
1020 if (ret)
1021 return ret;
1022
1023 return regulator_bulk_enable(adv->num_supplies, adv->supplies);
1024 }
1025
adv7511_uninit_regulators(struct adv7511 * adv)1026 static void adv7511_uninit_regulators(struct adv7511 *adv)
1027 {
1028 regulator_bulk_disable(adv->num_supplies, adv->supplies);
1029 }
1030
adv7511_cec_register_volatile(struct device * dev,unsigned int reg)1031 static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
1032 {
1033 struct i2c_client *i2c = to_i2c_client(dev);
1034 struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1035
1036 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
1037 reg -= ADV7533_REG_CEC_OFFSET;
1038
1039 switch (reg) {
1040 case ADV7511_REG_CEC_RX_FRAME_HDR:
1041 case ADV7511_REG_CEC_RX_FRAME_DATA0...
1042 ADV7511_REG_CEC_RX_FRAME_DATA0 + 14:
1043 case ADV7511_REG_CEC_RX_FRAME_LEN:
1044 case ADV7511_REG_CEC_RX_BUFFERS:
1045 case ADV7511_REG_CEC_TX_LOW_DRV_CNT:
1046 return true;
1047 }
1048
1049 return false;
1050 }
1051
1052 static const struct regmap_config adv7511_cec_regmap_config = {
1053 .reg_bits = 8,
1054 .val_bits = 8,
1055
1056 .max_register = 0xff,
1057 .cache_type = REGCACHE_RBTREE,
1058 .volatile_reg = adv7511_cec_register_volatile,
1059 };
1060
adv7511_init_cec_regmap(struct adv7511 * adv)1061 static int adv7511_init_cec_regmap(struct adv7511 *adv)
1062 {
1063 int ret;
1064
1065 adv->i2c_cec = i2c_new_ancillary_device(adv->i2c_main, "cec",
1066 ADV7511_CEC_I2C_ADDR_DEFAULT);
1067 if (IS_ERR(adv->i2c_cec))
1068 return PTR_ERR(adv->i2c_cec);
1069
1070 regmap_write(adv->regmap, ADV7511_REG_CEC_I2C_ADDR,
1071 adv->i2c_cec->addr << 1);
1072
1073 i2c_set_clientdata(adv->i2c_cec, adv);
1074
1075 adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
1076 &adv7511_cec_regmap_config);
1077 if (IS_ERR(adv->regmap_cec)) {
1078 ret = PTR_ERR(adv->regmap_cec);
1079 goto err;
1080 }
1081
1082 if (adv->type == ADV7533 || adv->type == ADV7535) {
1083 ret = adv7533_patch_cec_registers(adv);
1084 if (ret)
1085 goto err;
1086 }
1087
1088 return 0;
1089 err:
1090 i2c_unregister_device(adv->i2c_cec);
1091 return ret;
1092 }
1093
adv7511_parse_dt(struct device_node * np,struct adv7511_link_config * config)1094 static int adv7511_parse_dt(struct device_node *np,
1095 struct adv7511_link_config *config)
1096 {
1097 const char *str;
1098 int ret;
1099
1100 of_property_read_u32(np, "adi,input-depth", &config->input_color_depth);
1101 if (config->input_color_depth != 8 && config->input_color_depth != 10 &&
1102 config->input_color_depth != 12)
1103 return -EINVAL;
1104
1105 ret = of_property_read_string(np, "adi,input-colorspace", &str);
1106 if (ret < 0)
1107 return ret;
1108
1109 if (!strcmp(str, "rgb"))
1110 config->input_colorspace = HDMI_COLORSPACE_RGB;
1111 else if (!strcmp(str, "yuv422"))
1112 config->input_colorspace = HDMI_COLORSPACE_YUV422;
1113 else if (!strcmp(str, "yuv444"))
1114 config->input_colorspace = HDMI_COLORSPACE_YUV444;
1115 else
1116 return -EINVAL;
1117
1118 ret = of_property_read_string(np, "adi,input-clock", &str);
1119 if (ret < 0)
1120 return ret;
1121
1122 if (!strcmp(str, "1x"))
1123 config->input_clock = ADV7511_INPUT_CLOCK_1X;
1124 else if (!strcmp(str, "2x"))
1125 config->input_clock = ADV7511_INPUT_CLOCK_2X;
1126 else if (!strcmp(str, "ddr"))
1127 config->input_clock = ADV7511_INPUT_CLOCK_DDR;
1128 else
1129 return -EINVAL;
1130
1131 if (config->input_colorspace == HDMI_COLORSPACE_YUV422 ||
1132 config->input_clock != ADV7511_INPUT_CLOCK_1X) {
1133 ret = of_property_read_u32(np, "adi,input-style",
1134 &config->input_style);
1135 if (ret)
1136 return ret;
1137
1138 if (config->input_style < 1 || config->input_style > 3)
1139 return -EINVAL;
1140
1141 ret = of_property_read_string(np, "adi,input-justification",
1142 &str);
1143 if (ret < 0)
1144 return ret;
1145
1146 if (!strcmp(str, "left"))
1147 config->input_justification =
1148 ADV7511_INPUT_JUSTIFICATION_LEFT;
1149 else if (!strcmp(str, "evenly"))
1150 config->input_justification =
1151 ADV7511_INPUT_JUSTIFICATION_EVENLY;
1152 else if (!strcmp(str, "right"))
1153 config->input_justification =
1154 ADV7511_INPUT_JUSTIFICATION_RIGHT;
1155 else
1156 return -EINVAL;
1157
1158 } else {
1159 config->input_style = 1;
1160 config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT;
1161 }
1162
1163 of_property_read_u32(np, "adi,clock-delay", &config->clock_delay);
1164 if (config->clock_delay < -1200 || config->clock_delay > 1600)
1165 return -EINVAL;
1166
1167 config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync");
1168
1169 /* Hardcode the sync pulse configurations for now. */
1170 config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE;
1171 config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1172 config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH;
1173
1174 return 0;
1175 }
1176
adv7511_probe(struct i2c_client * i2c,const struct i2c_device_id * id)1177 static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
1178 {
1179 struct adv7511_link_config link_config;
1180 struct adv7511 *adv7511;
1181 struct device *dev = &i2c->dev;
1182 unsigned int val;
1183 int ret;
1184
1185 if (!dev->of_node)
1186 return -EINVAL;
1187
1188 adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
1189 if (!adv7511)
1190 return -ENOMEM;
1191
1192 adv7511->i2c_main = i2c;
1193 adv7511->powered = false;
1194 adv7511->status = connector_status_disconnected;
1195
1196 if (dev->of_node)
1197 adv7511->type = (enum adv7511_type)of_device_get_match_data(dev);
1198 else
1199 adv7511->type = id->driver_data;
1200
1201 memset(&link_config, 0, sizeof(link_config));
1202
1203 if (adv7511->type == ADV7511)
1204 ret = adv7511_parse_dt(dev->of_node, &link_config);
1205 else
1206 ret = adv7533_parse_dt(dev->of_node, adv7511);
1207 if (ret)
1208 return ret;
1209
1210 ret = adv7511_init_regulators(adv7511);
1211 if (ret) {
1212 dev_err(dev, "failed to init regulators\n");
1213 return ret;
1214 }
1215
1216 /*
1217 * The power down GPIO is optional. If present, toggle it from active to
1218 * inactive to wake up the encoder.
1219 */
1220 adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
1221 if (IS_ERR(adv7511->gpio_pd)) {
1222 ret = PTR_ERR(adv7511->gpio_pd);
1223 goto uninit_regulators;
1224 }
1225
1226 if (adv7511->gpio_pd) {
1227 usleep_range(5000, 6000);
1228 gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
1229 }
1230
1231 adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
1232 if (IS_ERR(adv7511->regmap)) {
1233 ret = PTR_ERR(adv7511->regmap);
1234 goto uninit_regulators;
1235 }
1236
1237 ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
1238 if (ret)
1239 goto uninit_regulators;
1240 dev_dbg(dev, "Rev. %d\n", val);
1241
1242 if (adv7511->type == ADV7511)
1243 ret = regmap_register_patch(adv7511->regmap,
1244 adv7511_fixed_registers,
1245 ARRAY_SIZE(adv7511_fixed_registers));
1246 else
1247 ret = adv7533_patch_registers(adv7511);
1248 if (ret)
1249 goto uninit_regulators;
1250
1251 adv7511_packet_disable(adv7511, 0xffff);
1252
1253 adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",
1254 ADV7511_EDID_I2C_ADDR_DEFAULT);
1255 if (IS_ERR(adv7511->i2c_edid)) {
1256 ret = PTR_ERR(adv7511->i2c_edid);
1257 goto uninit_regulators;
1258 }
1259
1260 regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
1261 adv7511->i2c_edid->addr << 1);
1262
1263 adv7511->i2c_packet = i2c_new_ancillary_device(i2c, "packet",
1264 ADV7511_PACKET_I2C_ADDR_DEFAULT);
1265 if (IS_ERR(adv7511->i2c_packet)) {
1266 ret = PTR_ERR(adv7511->i2c_packet);
1267 goto err_i2c_unregister_edid;
1268 }
1269
1270 regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
1271 adv7511->i2c_packet->addr << 1);
1272
1273 ret = adv7511_init_cec_regmap(adv7511);
1274 if (ret)
1275 goto err_i2c_unregister_packet;
1276
1277 INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
1278
1279 if (i2c->irq) {
1280 init_waitqueue_head(&adv7511->wq);
1281
1282 ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
1283 adv7511_irq_handler,
1284 IRQF_ONESHOT, dev_name(dev),
1285 adv7511);
1286 if (ret)
1287 goto err_unregister_cec;
1288 }
1289
1290 adv7511_power_off(adv7511);
1291
1292 i2c_set_clientdata(i2c, adv7511);
1293
1294 if (adv7511->type == ADV7511)
1295 adv7511_set_link_config(adv7511, &link_config);
1296
1297 ret = adv7511_cec_init(dev, adv7511);
1298 if (ret)
1299 goto err_unregister_cec;
1300
1301 adv7511->bridge.funcs = &adv7511_bridge_funcs;
1302 adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
1303 | DRM_BRIDGE_OP_HPD;
1304 adv7511->bridge.of_node = dev->of_node;
1305 adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1306
1307 drm_bridge_add(&adv7511->bridge);
1308
1309 adv7511_audio_init(dev, adv7511);
1310 return 0;
1311
1312 err_unregister_cec:
1313 cec_unregister_adapter(adv7511->cec_adap);
1314 i2c_unregister_device(adv7511->i2c_cec);
1315 if (adv7511->cec_clk)
1316 clk_disable_unprepare(adv7511->cec_clk);
1317 err_i2c_unregister_packet:
1318 i2c_unregister_device(adv7511->i2c_packet);
1319 err_i2c_unregister_edid:
1320 i2c_unregister_device(adv7511->i2c_edid);
1321 uninit_regulators:
1322 adv7511_uninit_regulators(adv7511);
1323
1324 return ret;
1325 }
1326
adv7511_remove(struct i2c_client * i2c)1327 static int adv7511_remove(struct i2c_client *i2c)
1328 {
1329 struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
1330
1331 if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
1332 adv7533_detach_dsi(adv7511);
1333 i2c_unregister_device(adv7511->i2c_cec);
1334 if (adv7511->cec_clk)
1335 clk_disable_unprepare(adv7511->cec_clk);
1336
1337 adv7511_uninit_regulators(adv7511);
1338
1339 drm_bridge_remove(&adv7511->bridge);
1340
1341 adv7511_audio_exit(adv7511);
1342
1343 cec_unregister_adapter(adv7511->cec_adap);
1344
1345 i2c_unregister_device(adv7511->i2c_packet);
1346 i2c_unregister_device(adv7511->i2c_edid);
1347
1348 return 0;
1349 }
1350
1351 static const struct i2c_device_id adv7511_i2c_ids[] = {
1352 { "adv7511", ADV7511 },
1353 { "adv7511w", ADV7511 },
1354 { "adv7513", ADV7511 },
1355 { "adv7533", ADV7533 },
1356 { "adv7535", ADV7535 },
1357 { }
1358 };
1359 MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
1360
1361 static const struct of_device_id adv7511_of_ids[] = {
1362 { .compatible = "adi,adv7511", .data = (void *)ADV7511 },
1363 { .compatible = "adi,adv7511w", .data = (void *)ADV7511 },
1364 { .compatible = "adi,adv7513", .data = (void *)ADV7511 },
1365 { .compatible = "adi,adv7533", .data = (void *)ADV7533 },
1366 { .compatible = "adi,adv7535", .data = (void *)ADV7535 },
1367 { }
1368 };
1369 MODULE_DEVICE_TABLE(of, adv7511_of_ids);
1370
1371 static struct mipi_dsi_driver adv7533_dsi_driver = {
1372 .driver.name = "adv7533",
1373 };
1374
1375 static struct i2c_driver adv7511_driver = {
1376 .driver = {
1377 .name = "adv7511",
1378 .of_match_table = adv7511_of_ids,
1379 },
1380 .id_table = adv7511_i2c_ids,
1381 .probe = adv7511_probe,
1382 .remove = adv7511_remove,
1383 };
1384
adv7511_init(void)1385 static int __init adv7511_init(void)
1386 {
1387 int ret;
1388
1389 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
1390 ret = mipi_dsi_driver_register(&adv7533_dsi_driver);
1391 if (ret)
1392 return ret;
1393 }
1394
1395 ret = i2c_add_driver(&adv7511_driver);
1396 if (ret) {
1397 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1398 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1399 }
1400
1401 return ret;
1402 }
1403 module_init(adv7511_init);
1404
adv7511_exit(void)1405 static void __exit adv7511_exit(void)
1406 {
1407 i2c_del_driver(&adv7511_driver);
1408
1409 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1410 mipi_dsi_driver_unregister(&adv7533_dsi_driver);
1411 }
1412 module_exit(adv7511_exit);
1413
1414 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
1415 MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver");
1416 MODULE_LICENSE("GPL");
1417