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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2018 Renesas Electronics
4 *
5 * Copyright (C) 2016 Atmel
6 * Bo Shen <voice.shen@atmel.com>
7 *
8 * Authors: Bo Shen <voice.shen@atmel.com>
9 * Boris Brezillon <boris.brezillon@free-electrons.com>
10 * Wu, Songjun <Songjun.Wu@atmel.com>
11 *
12 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
13 */
14
15#include <linux/gpio/consumer.h>
16#include <linux/i2c-mux.h>
17#include <linux/i2c.h>
18#include <linux/media-bus-format.h>
19#include <linux/module.h>
20#include <linux/regmap.h>
21#include <linux/regulator/consumer.h>
22#include <linux/clk.h>
23
24#include <drm/drm_atomic_helper.h>
25#include <drm/drm_bridge.h>
26#include <drm/drm_drv.h>
27#include <drm/drm_edid.h>
28#include <drm/drm_print.h>
29#include <drm/drm_probe_helper.h>
30
31#include <sound/hdmi-codec.h>
32
33#define SII902X_TPI_VIDEO_DATA 0x0
34
35#define SII902X_TPI_PIXEL_REPETITION 0x8
36#define SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT BIT(5)
37#define SII902X_TPI_AVI_PIXEL_REP_RISING_EDGE BIT(4)
38#define SII902X_TPI_AVI_PIXEL_REP_4X 3
39#define SII902X_TPI_AVI_PIXEL_REP_2X 1
40#define SII902X_TPI_AVI_PIXEL_REP_NONE 0
41#define SII902X_TPI_CLK_RATIO_HALF (0 << 6)
42#define SII902X_TPI_CLK_RATIO_1X (1 << 6)
43#define SII902X_TPI_CLK_RATIO_2X (2 << 6)
44#define SII902X_TPI_CLK_RATIO_4X (3 << 6)
45
46#define SII902X_TPI_AVI_IN_FORMAT 0x9
47#define SII902X_TPI_AVI_INPUT_BITMODE_12BIT BIT(7)
48#define SII902X_TPI_AVI_INPUT_DITHER BIT(6)
49#define SII902X_TPI_AVI_INPUT_RANGE_LIMITED (2 << 2)
50#define SII902X_TPI_AVI_INPUT_RANGE_FULL (1 << 2)
51#define SII902X_TPI_AVI_INPUT_RANGE_AUTO (0 << 2)
52#define SII902X_TPI_AVI_INPUT_COLORSPACE_BLACK (3 << 0)
53#define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV422 (2 << 0)
54#define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV444 (1 << 0)
55#define SII902X_TPI_AVI_INPUT_COLORSPACE_RGB (0 << 0)
56
57#define SII902X_TPI_AVI_INFOFRAME 0x0c
58
59#define SII902X_SYS_CTRL_DATA 0x1a
60#define SII902X_SYS_CTRL_PWR_DWN BIT(4)
61#define SII902X_SYS_CTRL_AV_MUTE BIT(3)
62#define SII902X_SYS_CTRL_DDC_BUS_REQ BIT(2)
63#define SII902X_SYS_CTRL_DDC_BUS_GRTD BIT(1)
64#define SII902X_SYS_CTRL_OUTPUT_MODE BIT(0)
65#define SII902X_SYS_CTRL_OUTPUT_HDMI 1
66#define SII902X_SYS_CTRL_OUTPUT_DVI 0
67
68#define SII902X_REG_CHIPID(n) (0x1b + (n))
69
70#define SII902X_PWR_STATE_CTRL 0x1e
71#define SII902X_AVI_POWER_STATE_MSK GENMASK(1, 0)
72#define SII902X_AVI_POWER_STATE_D(l) ((l) & SII902X_AVI_POWER_STATE_MSK)
73
74/* Audio */
75#define SII902X_TPI_I2S_ENABLE_MAPPING_REG 0x1f
76#define SII902X_TPI_I2S_CONFIG_FIFO0 (0 << 0)
77#define SII902X_TPI_I2S_CONFIG_FIFO1 (1 << 0)
78#define SII902X_TPI_I2S_CONFIG_FIFO2 (2 << 0)
79#define SII902X_TPI_I2S_CONFIG_FIFO3 (3 << 0)
80#define SII902X_TPI_I2S_LEFT_RIGHT_SWAP (1 << 2)
81#define SII902X_TPI_I2S_AUTO_DOWNSAMPLE (1 << 3)
82#define SII902X_TPI_I2S_SELECT_SD0 (0 << 4)
83#define SII902X_TPI_I2S_SELECT_SD1 (1 << 4)
84#define SII902X_TPI_I2S_SELECT_SD2 (2 << 4)
85#define SII902X_TPI_I2S_SELECT_SD3 (3 << 4)
86#define SII902X_TPI_I2S_FIFO_ENABLE (1 << 7)
87
88#define SII902X_TPI_I2S_INPUT_CONFIG_REG 0x20
89#define SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES (0 << 0)
90#define SII902X_TPI_I2S_FIRST_BIT_SHIFT_NO (1 << 0)
91#define SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST (0 << 1)
92#define SII902X_TPI_I2S_SD_DIRECTION_LSB_FIRST (1 << 1)
93#define SII902X_TPI_I2S_SD_JUSTIFY_LEFT (0 << 2)
94#define SII902X_TPI_I2S_SD_JUSTIFY_RIGHT (1 << 2)
95#define SII902X_TPI_I2S_WS_POLARITY_LOW (0 << 3)
96#define SII902X_TPI_I2S_WS_POLARITY_HIGH (1 << 3)
97#define SII902X_TPI_I2S_MCLK_MULTIPLIER_128 (0 << 4)
98#define SII902X_TPI_I2S_MCLK_MULTIPLIER_256 (1 << 4)
99#define SII902X_TPI_I2S_MCLK_MULTIPLIER_384 (2 << 4)
100#define SII902X_TPI_I2S_MCLK_MULTIPLIER_512 (3 << 4)
101#define SII902X_TPI_I2S_MCLK_MULTIPLIER_768 (4 << 4)
102#define SII902X_TPI_I2S_MCLK_MULTIPLIER_1024 (5 << 4)
103#define SII902X_TPI_I2S_MCLK_MULTIPLIER_1152 (6 << 4)
104#define SII902X_TPI_I2S_MCLK_MULTIPLIER_192 (7 << 4)
105#define SII902X_TPI_I2S_SCK_EDGE_FALLING (0 << 7)
106#define SII902X_TPI_I2S_SCK_EDGE_RISING (1 << 7)
107
108#define SII902X_TPI_I2S_STRM_HDR_BASE 0x21
109#define SII902X_TPI_I2S_STRM_HDR_SIZE 5
110
111#define SII902X_TPI_AUDIO_CONFIG_BYTE2_REG 0x26
112#define SII902X_TPI_AUDIO_CODING_STREAM_HEADER (0 << 0)
113#define SII902X_TPI_AUDIO_CODING_PCM (1 << 0)
114#define SII902X_TPI_AUDIO_CODING_AC3 (2 << 0)
115#define SII902X_TPI_AUDIO_CODING_MPEG1 (3 << 0)
116#define SII902X_TPI_AUDIO_CODING_MP3 (4 << 0)
117#define SII902X_TPI_AUDIO_CODING_MPEG2 (5 << 0)
118#define SII902X_TPI_AUDIO_CODING_AAC (6 << 0)
119#define SII902X_TPI_AUDIO_CODING_DTS (7 << 0)
120#define SII902X_TPI_AUDIO_CODING_ATRAC (8 << 0)
121#define SII902X_TPI_AUDIO_MUTE_DISABLE (0 << 4)
122#define SII902X_TPI_AUDIO_MUTE_ENABLE (1 << 4)
123#define SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS (0 << 5)
124#define SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS (1 << 5)
125#define SII902X_TPI_AUDIO_INTERFACE_DISABLE (0 << 6)
126#define SII902X_TPI_AUDIO_INTERFACE_SPDIF (1 << 6)
127#define SII902X_TPI_AUDIO_INTERFACE_I2S (2 << 6)
128
129#define SII902X_TPI_AUDIO_CONFIG_BYTE3_REG 0x27
130#define SII902X_TPI_AUDIO_FREQ_STREAM (0 << 3)
131#define SII902X_TPI_AUDIO_FREQ_32KHZ (1 << 3)
132#define SII902X_TPI_AUDIO_FREQ_44KHZ (2 << 3)
133#define SII902X_TPI_AUDIO_FREQ_48KHZ (3 << 3)
134#define SII902X_TPI_AUDIO_FREQ_88KHZ (4 << 3)
135#define SII902X_TPI_AUDIO_FREQ_96KHZ (5 << 3)
136#define SII902X_TPI_AUDIO_FREQ_176KHZ (6 << 3)
137#define SII902X_TPI_AUDIO_FREQ_192KHZ (7 << 3)
138#define SII902X_TPI_AUDIO_SAMPLE_SIZE_STREAM (0 << 6)
139#define SII902X_TPI_AUDIO_SAMPLE_SIZE_16 (1 << 6)
140#define SII902X_TPI_AUDIO_SAMPLE_SIZE_20 (2 << 6)
141#define SII902X_TPI_AUDIO_SAMPLE_SIZE_24 (3 << 6)
142
143#define SII902X_TPI_AUDIO_CONFIG_BYTE4_REG 0x28
144
145#define SII902X_INT_ENABLE 0x3c
146#define SII902X_INT_STATUS 0x3d
147#define SII902X_HOTPLUG_EVENT BIT(0)
148#define SII902X_PLUGGED_STATUS BIT(2)
149
150#define SII902X_REG_TPI_RQB 0xc7
151
152/* Indirect internal register access */
153#define SII902X_IND_SET_PAGE 0xbc
154#define SII902X_IND_OFFSET 0xbd
155#define SII902X_IND_VALUE 0xbe
156
157#define SII902X_TPI_MISC_INFOFRAME_BASE 0xbf
158#define SII902X_TPI_MISC_INFOFRAME_END 0xde
159#define SII902X_TPI_MISC_INFOFRAME_SIZE \
160 (SII902X_TPI_MISC_INFOFRAME_END - SII902X_TPI_MISC_INFOFRAME_BASE)
161
162#define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500
163
164#define SII902X_AUDIO_PORT_INDEX 3
165
166struct sii902x {
167 struct i2c_client *i2c;
168 struct regmap *regmap;
169 struct drm_bridge bridge;
170 struct drm_bridge *next_bridge;
171 struct drm_connector connector;
172 struct gpio_desc *reset_gpio;
173 struct i2c_mux_core *i2cmux;
174 struct regulator_bulk_data supplies[2];
175 bool sink_is_hdmi;
176 /*
177 * Mutex protects audio and video functions from interfering
178 * each other, by keeping their i2c command sequences atomic.
179 */
180 struct mutex mutex;
181 struct sii902x_audio {
182 struct platform_device *pdev;
183 struct clk *mclk;
184 u32 i2s_fifo_sequence[4];
185 } audio;
186};
187
188static int sii902x_read_unlocked(struct i2c_client *i2c, u8 reg, u8 *val)
189{
190 union i2c_smbus_data data;
191 int ret;
192
193 ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags,
194 I2C_SMBUS_READ, reg, I2C_SMBUS_BYTE_DATA, &data);
195
196 if (ret < 0)
197 return ret;
198
199 *val = data.byte;
200 return 0;
201}
202
203static int sii902x_write_unlocked(struct i2c_client *i2c, u8 reg, u8 val)
204{
205 union i2c_smbus_data data;
206
207 data.byte = val;
208
209 return __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags,
210 I2C_SMBUS_WRITE, reg, I2C_SMBUS_BYTE_DATA,
211 &data);
212}
213
214static int sii902x_update_bits_unlocked(struct i2c_client *i2c, u8 reg, u8 mask,
215 u8 val)
216{
217 int ret;
218 u8 status;
219
220 ret = sii902x_read_unlocked(i2c, reg, &status);
221 if (ret)
222 return ret;
223 status &= ~mask;
224 status |= val & mask;
225 return sii902x_write_unlocked(i2c, reg, status);
226}
227
228static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge)
229{
230 return container_of(bridge, struct sii902x, bridge);
231}
232
233static inline struct sii902x *connector_to_sii902x(struct drm_connector *con)
234{
235 return container_of(con, struct sii902x, connector);
236}
237
238static void sii902x_reset(struct sii902x *sii902x)
239{
240 if (!sii902x->reset_gpio)
241 return;
242
243 gpiod_set_value(sii902x->reset_gpio, 1);
244
245 /* The datasheet says treset-min = 100us. Make it 150us to be sure. */
246 usleep_range(150, 200);
247
248 gpiod_set_value(sii902x->reset_gpio, 0);
249}
250
251static enum drm_connector_status sii902x_detect(struct sii902x *sii902x)
252{
253 unsigned int status;
254
255 mutex_lock(&sii902x->mutex);
256
257 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);
258
259 mutex_unlock(&sii902x->mutex);
260
261 return (status & SII902X_PLUGGED_STATUS) ?
262 connector_status_connected : connector_status_disconnected;
263}
264
265static enum drm_connector_status
266sii902x_connector_detect(struct drm_connector *connector, bool force)
267{
268 struct sii902x *sii902x = connector_to_sii902x(connector);
269
270 return sii902x_detect(sii902x);
271}
272
273static const struct drm_connector_funcs sii902x_connector_funcs = {
274 .detect = sii902x_connector_detect,
275 .fill_modes = drm_helper_probe_single_connector_modes,
276 .destroy = drm_connector_cleanup,
277 .reset = drm_atomic_helper_connector_reset,
278 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
279 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
280};
281
282static struct edid *sii902x_get_edid(struct sii902x *sii902x,
283 struct drm_connector *connector)
284{
285 struct edid *edid;
286
287 mutex_lock(&sii902x->mutex);
288
289 edid = drm_get_edid(connector, sii902x->i2cmux->adapter[0]);
290 if (edid) {
291 if (drm_detect_hdmi_monitor(edid))
292 sii902x->sink_is_hdmi = true;
293 else
294 sii902x->sink_is_hdmi = false;
295 }
296
297 mutex_unlock(&sii902x->mutex);
298
299 return edid;
300}
301
302static int sii902x_get_modes(struct drm_connector *connector)
303{
304 struct sii902x *sii902x = connector_to_sii902x(connector);
305 struct edid *edid;
306 int num = 0;
307
308 edid = sii902x_get_edid(sii902x, connector);
309 drm_connector_update_edid_property(connector, edid);
310 if (edid) {
311 num = drm_add_edid_modes(connector, edid);
312 kfree(edid);
313 }
314
315 return num;
316}
317
318static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector,
319 struct drm_display_mode *mode)
320{
321 /* TODO: check mode */
322
323 return MODE_OK;
324}
325
326static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = {
327 .get_modes = sii902x_get_modes,
328 .mode_valid = sii902x_mode_valid,
329};
330
331static void sii902x_bridge_disable(struct drm_bridge *bridge)
332{
333 struct sii902x *sii902x = bridge_to_sii902x(bridge);
334
335 mutex_lock(&sii902x->mutex);
336
337 regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,
338 SII902X_SYS_CTRL_PWR_DWN,
339 SII902X_SYS_CTRL_PWR_DWN);
340
341 mutex_unlock(&sii902x->mutex);
342}
343
344static void sii902x_bridge_enable(struct drm_bridge *bridge)
345{
346 struct sii902x *sii902x = bridge_to_sii902x(bridge);
347
348 mutex_lock(&sii902x->mutex);
349
350 regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL,
351 SII902X_AVI_POWER_STATE_MSK,
352 SII902X_AVI_POWER_STATE_D(0));
353 regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,
354 SII902X_SYS_CTRL_PWR_DWN, 0);
355
356 mutex_unlock(&sii902x->mutex);
357}
358
359static void sii902x_bridge_mode_set(struct drm_bridge *bridge,
360 const struct drm_display_mode *mode,
361 const struct drm_display_mode *adj)
362{
363 struct sii902x *sii902x = bridge_to_sii902x(bridge);
364 u8 output_mode = SII902X_SYS_CTRL_OUTPUT_DVI;
365 struct regmap *regmap = sii902x->regmap;
366 u8 buf[HDMI_INFOFRAME_SIZE(AVI)];
367 struct hdmi_avi_infoframe frame;
368 u16 pixel_clock_10kHz = adj->clock / 10;
369 int ret;
370
371 if (sii902x->sink_is_hdmi)
372 output_mode = SII902X_SYS_CTRL_OUTPUT_HDMI;
373
374 buf[0] = pixel_clock_10kHz & 0xff;
375 buf[1] = pixel_clock_10kHz >> 8;
376 buf[2] = drm_mode_vrefresh(adj);
377 buf[3] = 0x00;
378 buf[4] = adj->hdisplay;
379 buf[5] = adj->hdisplay >> 8;
380 buf[6] = adj->vdisplay;
381 buf[7] = adj->vdisplay >> 8;
382 buf[8] = SII902X_TPI_CLK_RATIO_1X | SII902X_TPI_AVI_PIXEL_REP_NONE |
383 SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT;
384 buf[9] = SII902X_TPI_AVI_INPUT_RANGE_AUTO |
385 SII902X_TPI_AVI_INPUT_COLORSPACE_RGB;
386
387 mutex_lock(&sii902x->mutex);
388
389 ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,
390 SII902X_SYS_CTRL_OUTPUT_MODE, output_mode);
391 if (ret)
392 goto out;
393
394 ret = regmap_bulk_write(regmap, SII902X_TPI_VIDEO_DATA, buf, 10);
395 if (ret)
396 goto out;
397
398 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame,
399 &sii902x->connector, adj);
400 if (ret < 0) {
401 DRM_ERROR("couldn't fill AVI infoframe\n");
402 goto out;
403 }
404
405 ret = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf));
406 if (ret < 0) {
407 DRM_ERROR("failed to pack AVI infoframe: %d\n", ret);
408 goto out;
409 }
410
411 /* Do not send the infoframe header, but keep the CRC field. */
412 regmap_bulk_write(regmap, SII902X_TPI_AVI_INFOFRAME,
413 buf + HDMI_INFOFRAME_HEADER_SIZE - 1,
414 HDMI_AVI_INFOFRAME_SIZE + 1);
415
416out:
417 mutex_unlock(&sii902x->mutex);
418}
419
420static int sii902x_bridge_attach(struct drm_bridge *bridge,
421 enum drm_bridge_attach_flags flags)
422{
423 struct sii902x *sii902x = bridge_to_sii902x(bridge);
424 u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
425 struct drm_device *drm = bridge->dev;
426 int ret;
427
428 if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
429 return drm_bridge_attach(bridge->encoder, sii902x->next_bridge,
430 bridge, flags);
431
432 drm_connector_helper_add(&sii902x->connector,
433 &sii902x_connector_helper_funcs);
434
435 if (!drm_core_check_feature(drm, DRIVER_ATOMIC)) {
436 dev_err(&sii902x->i2c->dev,
437 "sii902x driver is only compatible with DRM devices supporting atomic updates\n");
438 return -ENOTSUPP;
439 }
440
441 ret = drm_connector_init(drm, &sii902x->connector,
442 &sii902x_connector_funcs,
443 DRM_MODE_CONNECTOR_HDMIA);
444 if (ret)
445 return ret;
446
447 if (sii902x->i2c->irq > 0)
448 sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD;
449 else
450 sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT;
451
452 ret = drm_display_info_set_bus_formats(&sii902x->connector.display_info,
453 &bus_format, 1);
454 if (ret)
455 return ret;
456
457 drm_connector_attach_encoder(&sii902x->connector, bridge->encoder);
458
459 return 0;
460}
461
462static enum drm_connector_status sii902x_bridge_detect(struct drm_bridge *bridge)
463{
464 struct sii902x *sii902x = bridge_to_sii902x(bridge);
465
466 return sii902x_detect(sii902x);
467}
468
469static struct edid *sii902x_bridge_get_edid(struct drm_bridge *bridge,
470 struct drm_connector *connector)
471{
472 struct sii902x *sii902x = bridge_to_sii902x(bridge);
473
474 return sii902x_get_edid(sii902x, connector);
475}
476
477static const struct drm_bridge_funcs sii902x_bridge_funcs = {
478 .attach = sii902x_bridge_attach,
479 .mode_set = sii902x_bridge_mode_set,
480 .disable = sii902x_bridge_disable,
481 .enable = sii902x_bridge_enable,
482 .detect = sii902x_bridge_detect,
483 .get_edid = sii902x_bridge_get_edid,
484};
485
486static int sii902x_mute(struct sii902x *sii902x, bool mute)
487{
488 struct device *dev = &sii902x->i2c->dev;
489 unsigned int val = mute ? SII902X_TPI_AUDIO_MUTE_ENABLE :
490 SII902X_TPI_AUDIO_MUTE_DISABLE;
491
492 dev_dbg(dev, "%s: %s\n", __func__, mute ? "Muted" : "Unmuted");
493
494 return regmap_update_bits(sii902x->regmap,
495 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG,
496 SII902X_TPI_AUDIO_MUTE_ENABLE, val);
497}
498
499static const int sii902x_mclk_div_table[] = {
500 128, 256, 384, 512, 768, 1024, 1152, 192 };
501
502static int sii902x_select_mclk_div(u8 *i2s_config_reg, unsigned int rate,
503 unsigned int mclk)
504{
505 int div = mclk / rate;
506 int distance = 100000;
507 u8 i, nearest = 0;
508
509 for (i = 0; i < ARRAY_SIZE(sii902x_mclk_div_table); i++) {
510 unsigned int d = abs(div - sii902x_mclk_div_table[i]);
511
512 if (d >= distance)
513 continue;
514
515 nearest = i;
516 distance = d;
517 if (d == 0)
518 break;
519 }
520
521 *i2s_config_reg |= nearest << 4;
522
523 return sii902x_mclk_div_table[nearest];
524}
525
526static const struct sii902x_sample_freq {
527 u32 freq;
528 u8 val;
529} sii902x_sample_freq[] = {
530 { .freq = 32000, .val = SII902X_TPI_AUDIO_FREQ_32KHZ },
531 { .freq = 44000, .val = SII902X_TPI_AUDIO_FREQ_44KHZ },
532 { .freq = 48000, .val = SII902X_TPI_AUDIO_FREQ_48KHZ },
533 { .freq = 88000, .val = SII902X_TPI_AUDIO_FREQ_88KHZ },
534 { .freq = 96000, .val = SII902X_TPI_AUDIO_FREQ_96KHZ },
535 { .freq = 176000, .val = SII902X_TPI_AUDIO_FREQ_176KHZ },
536 { .freq = 192000, .val = SII902X_TPI_AUDIO_FREQ_192KHZ },
537};
538
539static int sii902x_audio_hw_params(struct device *dev, void *data,
540 struct hdmi_codec_daifmt *daifmt,
541 struct hdmi_codec_params *params)
542{
543 struct sii902x *sii902x = dev_get_drvdata(dev);
544 u8 i2s_config_reg = SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST;
545 u8 config_byte2_reg = (SII902X_TPI_AUDIO_INTERFACE_I2S |
546 SII902X_TPI_AUDIO_MUTE_ENABLE |
547 SII902X_TPI_AUDIO_CODING_PCM);
548 u8 config_byte3_reg = 0;
549 u8 infoframe_buf[HDMI_INFOFRAME_SIZE(AUDIO)];
550 unsigned long mclk_rate;
551 int i, ret;
552
553 if (daifmt->bit_clk_provider || daifmt->frame_clk_provider) {
554 dev_dbg(dev, "%s: I2S clock provider mode not supported\n",
555 __func__);
556 return -EINVAL;
557 }
558
559 switch (daifmt->fmt) {
560 case HDMI_I2S:
561 i2s_config_reg |= SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES |
562 SII902X_TPI_I2S_SD_JUSTIFY_LEFT;
563 break;
564 case HDMI_RIGHT_J:
565 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_RIGHT;
566 break;
567 case HDMI_LEFT_J:
568 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_LEFT;
569 break;
570 default:
571 dev_dbg(dev, "%s: Unsupported i2s format %u\n", __func__,
572 daifmt->fmt);
573 return -EINVAL;
574 }
575
576 if (daifmt->bit_clk_inv)
577 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_FALLING;
578 else
579 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_RISING;
580
581 if (daifmt->frame_clk_inv)
582 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_LOW;
583 else
584 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_HIGH;
585
586 if (params->channels > 2)
587 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS;
588 else
589 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS;
590
591 switch (params->sample_width) {
592 case 16:
593 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_16;
594 break;
595 case 20:
596 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_20;
597 break;
598 case 24:
599 case 32:
600 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_24;
601 break;
602 default:
603 dev_err(dev, "%s: Unsupported sample width %u\n", __func__,
604 params->sample_width);
605 return -EINVAL;
606 }
607
608 for (i = 0; i < ARRAY_SIZE(sii902x_sample_freq); i++) {
609 if (params->sample_rate == sii902x_sample_freq[i].freq) {
610 config_byte3_reg |= sii902x_sample_freq[i].val;
611 break;
612 }
613 }
614
615 ret = clk_prepare_enable(sii902x->audio.mclk);
616 if (ret) {
617 dev_err(dev, "Enabling mclk failed: %d\n", ret);
618 return ret;
619 }
620
621 if (sii902x->audio.mclk) {
622 mclk_rate = clk_get_rate(sii902x->audio.mclk);
623 ret = sii902x_select_mclk_div(&i2s_config_reg,
624 params->sample_rate, mclk_rate);
625 if (mclk_rate != ret * params->sample_rate)
626 dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n",
627 mclk_rate, ret, params->sample_rate);
628 }
629
630 mutex_lock(&sii902x->mutex);
631
632 ret = regmap_write(sii902x->regmap,
633 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG,
634 config_byte2_reg);
635 if (ret < 0)
636 goto out;
637
638 ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG,
639 i2s_config_reg);
640 if (ret)
641 goto out;
642
643 for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) &&
644 sii902x->audio.i2s_fifo_sequence[i]; i++)
645 regmap_write(sii902x->regmap,
646 SII902X_TPI_I2S_ENABLE_MAPPING_REG,
647 sii902x->audio.i2s_fifo_sequence[i]);
648
649 ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG,
650 config_byte3_reg);
651 if (ret)
652 goto out;
653
654 ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE,
655 params->iec.status,
656 min((size_t) SII902X_TPI_I2S_STRM_HDR_SIZE,
657 sizeof(params->iec.status)));
658 if (ret)
659 goto out;
660
661 ret = hdmi_audio_infoframe_pack(¶ms->cea, infoframe_buf,
662 sizeof(infoframe_buf));
663 if (ret < 0) {
664 dev_err(dev, "%s: Failed to pack audio infoframe: %d\n",
665 __func__, ret);
666 goto out;
667 }
668
669 ret = regmap_bulk_write(sii902x->regmap,
670 SII902X_TPI_MISC_INFOFRAME_BASE,
671 infoframe_buf,
672 min(ret, SII902X_TPI_MISC_INFOFRAME_SIZE));
673 if (ret)
674 goto out;
675
676 /* Decode Level 0 Packets */
677 ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02);
678 if (ret)
679 goto out;
680
681 ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24);
682 if (ret)
683 goto out;
684
685 ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02);
686 if (ret)
687 goto out;
688
689 dev_dbg(dev, "%s: hdmi audio enabled\n", __func__);
690out:
691 mutex_unlock(&sii902x->mutex);
692
693 if (ret) {
694 clk_disable_unprepare(sii902x->audio.mclk);
695 dev_err(dev, "%s: hdmi audio enable failed: %d\n", __func__,
696 ret);
697 }
698
699 return ret;
700}
701
702static void sii902x_audio_shutdown(struct device *dev, void *data)
703{
704 struct sii902x *sii902x = dev_get_drvdata(dev);
705
706 mutex_lock(&sii902x->mutex);
707
708 regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG,
709 SII902X_TPI_AUDIO_INTERFACE_DISABLE);
710
711 mutex_unlock(&sii902x->mutex);
712
713 clk_disable_unprepare(sii902x->audio.mclk);
714}
715
716static int sii902x_audio_mute(struct device *dev, void *data,
717 bool enable, int direction)
718{
719 struct sii902x *sii902x = dev_get_drvdata(dev);
720
721 mutex_lock(&sii902x->mutex);
722
723 sii902x_mute(sii902x, enable);
724
725 mutex_unlock(&sii902x->mutex);
726
727 return 0;
728}
729
730static int sii902x_audio_get_eld(struct device *dev, void *data,
731 uint8_t *buf, size_t len)
732{
733 struct sii902x *sii902x = dev_get_drvdata(dev);
734
735 mutex_lock(&sii902x->mutex);
736
737 memcpy(buf, sii902x->connector.eld,
738 min(sizeof(sii902x->connector.eld), len));
739
740 mutex_unlock(&sii902x->mutex);
741
742 return 0;
743}
744
745static int sii902x_audio_get_dai_id(struct snd_soc_component *component,
746 struct device_node *endpoint)
747{
748 struct of_endpoint of_ep;
749 int ret;
750
751 ret = of_graph_parse_endpoint(endpoint, &of_ep);
752 if (ret < 0)
753 return ret;
754
755 /*
756 * HDMI sound should be located at reg = <3>
757 * Return expected DAI index 0.
758 */
759 if (of_ep.port == SII902X_AUDIO_PORT_INDEX)
760 return 0;
761
762 return -EINVAL;
763}
764
765static const struct hdmi_codec_ops sii902x_audio_codec_ops = {
766 .hw_params = sii902x_audio_hw_params,
767 .audio_shutdown = sii902x_audio_shutdown,
768 .mute_stream = sii902x_audio_mute,
769 .get_eld = sii902x_audio_get_eld,
770 .get_dai_id = sii902x_audio_get_dai_id,
771 .no_capture_mute = 1,
772};
773
774static int sii902x_audio_codec_init(struct sii902x *sii902x,
775 struct device *dev)
776{
777 static const u8 audio_fifo_id[] = {
778 SII902X_TPI_I2S_CONFIG_FIFO0,
779 SII902X_TPI_I2S_CONFIG_FIFO1,
780 SII902X_TPI_I2S_CONFIG_FIFO2,
781 SII902X_TPI_I2S_CONFIG_FIFO3,
782 };
783 static const u8 i2s_lane_id[] = {
784 SII902X_TPI_I2S_SELECT_SD0,
785 SII902X_TPI_I2S_SELECT_SD1,
786 SII902X_TPI_I2S_SELECT_SD2,
787 SII902X_TPI_I2S_SELECT_SD3,
788 };
789 struct hdmi_codec_pdata codec_data = {
790 .ops = &sii902x_audio_codec_ops,
791 .i2s = 1, /* Only i2s support for now. */
792 .spdif = 0,
793 .max_i2s_channels = 0,
794 };
795 u8 lanes[4];
796 int num_lanes, i;
797
798 if (!of_property_read_bool(dev->of_node, "#sound-dai-cells")) {
799 dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n",
800 __func__);
801 return 0;
802 }
803
804 num_lanes = of_property_read_variable_u8_array(dev->of_node,
805 "sil,i2s-data-lanes",
806 lanes, 1,
807 ARRAY_SIZE(lanes));
808
809 if (num_lanes == -EINVAL) {
810 dev_dbg(dev,
811 "%s: No \"sil,i2s-data-lanes\", use default <0>\n",
812 __func__);
813 num_lanes = 1;
814 lanes[0] = 0;
815 } else if (num_lanes < 0) {
816 dev_err(dev,
817 "%s: Error gettin \"sil,i2s-data-lanes\": %d\n",
818 __func__, num_lanes);
819 return num_lanes;
820 }
821 codec_data.max_i2s_channels = 2 * num_lanes;
822
823 for (i = 0; i < num_lanes; i++)
824 sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] |
825 i2s_lane_id[lanes[i]] | SII902X_TPI_I2S_FIFO_ENABLE;
826
827 sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk");
828 if (IS_ERR(sii902x->audio.mclk)) {
829 dev_err(dev, "%s: No clock (audio mclk) found: %ld\n",
830 __func__, PTR_ERR(sii902x->audio.mclk));
831 return PTR_ERR(sii902x->audio.mclk);
832 }
833
834 sii902x->audio.pdev = platform_device_register_data(
835 dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
836 &codec_data, sizeof(codec_data));
837
838 return PTR_ERR_OR_ZERO(sii902x->audio.pdev);
839}
840
841static const struct regmap_range sii902x_volatile_ranges[] = {
842 { .range_min = 0, .range_max = 0xff },
843};
844
845static const struct regmap_access_table sii902x_volatile_table = {
846 .yes_ranges = sii902x_volatile_ranges,
847 .n_yes_ranges = ARRAY_SIZE(sii902x_volatile_ranges),
848};
849
850static const struct regmap_config sii902x_regmap_config = {
851 .reg_bits = 8,
852 .val_bits = 8,
853 .disable_locking = true, /* struct sii902x mutex should be enough */
854 .max_register = SII902X_TPI_MISC_INFOFRAME_END,
855 .volatile_table = &sii902x_volatile_table,
856 .cache_type = REGCACHE_NONE,
857};
858
859static irqreturn_t sii902x_interrupt(int irq, void *data)
860{
861 struct sii902x *sii902x = data;
862 unsigned int status = 0;
863
864 mutex_lock(&sii902x->mutex);
865
866 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);
867 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);
868
869 mutex_unlock(&sii902x->mutex);
870
871 if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) {
872 drm_helper_hpd_irq_event(sii902x->bridge.dev);
873 drm_bridge_hpd_notify(&sii902x->bridge, (status & SII902X_PLUGGED_STATUS)
874 ? connector_status_connected
875 : connector_status_disconnected);
876 }
877
878 return IRQ_HANDLED;
879}
880
881/*
882 * The purpose of sii902x_i2c_bypass_select is to enable the pass through
883 * mode of the HDMI transmitter. Do not use regmap from within this function,
884 * only use sii902x_*_unlocked functions to read/modify/write registers.
885 * We are holding the parent adapter lock here, keep this in mind before
886 * adding more i2c transactions.
887 *
888 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere
889 * in this driver, we need to make sure that we only touch 0x1A[2:1] from
890 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that
891 * we leave the remaining bits as we have found them.
892 */
893static int sii902x_i2c_bypass_select(struct i2c_mux_core *mux, u32 chan_id)
894{
895 struct sii902x *sii902x = i2c_mux_priv(mux);
896 struct device *dev = &sii902x->i2c->dev;
897 unsigned long timeout;
898 u8 status;
899 int ret;
900
901 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,
902 SII902X_SYS_CTRL_DDC_BUS_REQ,
903 SII902X_SYS_CTRL_DDC_BUS_REQ);
904 if (ret)
905 return ret;
906
907 timeout = jiffies +
908 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS);
909 do {
910 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,
911 &status);
912 if (ret)
913 return ret;
914 } while (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD) &&
915 time_before(jiffies, timeout));
916
917 if (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD)) {
918 dev_err(dev, "Failed to acquire the i2c bus\n");
919 return -ETIMEDOUT;
920 }
921
922 return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,
923 status);
924}
925
926/*
927 * The purpose of sii902x_i2c_bypass_deselect is to disable the pass through
928 * mode of the HDMI transmitter. Do not use regmap from within this function,
929 * only use sii902x_*_unlocked functions to read/modify/write registers.
930 * We are holding the parent adapter lock here, keep this in mind before
931 * adding more i2c transactions.
932 *
933 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere
934 * in this driver, we need to make sure that we only touch 0x1A[2:1] from
935 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that
936 * we leave the remaining bits as we have found them.
937 */
938static int sii902x_i2c_bypass_deselect(struct i2c_mux_core *mux, u32 chan_id)
939{
940 struct sii902x *sii902x = i2c_mux_priv(mux);
941 struct device *dev = &sii902x->i2c->dev;
942 unsigned long timeout;
943 unsigned int retries;
944 u8 status;
945 int ret;
946
947 /*
948 * When the HDMI transmitter is in pass through mode, we need an
949 * (undocumented) additional delay between STOP and START conditions
950 * to guarantee the bus won't get stuck.
951 */
952 udelay(30);
953
954 /*
955 * Sometimes the I2C bus can stall after failure to use the
956 * EDID channel. Retry a few times to see if things clear
957 * up, else continue anyway.
958 */
959 retries = 5;
960 do {
961 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,
962 &status);
963 retries--;
964 } while (ret && retries);
965 if (ret) {
966 dev_err(dev, "failed to read status (%d)\n", ret);
967 return ret;
968 }
969
970 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,
971 SII902X_SYS_CTRL_DDC_BUS_REQ |
972 SII902X_SYS_CTRL_DDC_BUS_GRTD, 0);
973 if (ret)
974 return ret;
975
976 timeout = jiffies +
977 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS);
978 do {
979 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,
980 &status);
981 if (ret)
982 return ret;
983 } while (status & (SII902X_SYS_CTRL_DDC_BUS_REQ |
984 SII902X_SYS_CTRL_DDC_BUS_GRTD) &&
985 time_before(jiffies, timeout));
986
987 if (status & (SII902X_SYS_CTRL_DDC_BUS_REQ |
988 SII902X_SYS_CTRL_DDC_BUS_GRTD)) {
989 dev_err(dev, "failed to release the i2c bus\n");
990 return -ETIMEDOUT;
991 }
992
993 return 0;
994}
995
996static const struct drm_bridge_timings default_sii902x_timings = {
997 .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE
998 | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE
999 | DRM_BUS_FLAG_DE_HIGH,
1000};
1001
1002static int sii902x_init(struct sii902x *sii902x)
1003{
1004 struct device *dev = &sii902x->i2c->dev;
1005 unsigned int status = 0;
1006 u8 chipid[4];
1007 int ret;
1008
1009 sii902x_reset(sii902x);
1010
1011 ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0);
1012 if (ret)
1013 return ret;
1014
1015 ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0),
1016 &chipid, 4);
1017 if (ret) {
1018 dev_err(dev, "regmap_read failed %d\n", ret);
1019 return ret;
1020 }
1021
1022 if (chipid[0] != 0xb0) {
1023 dev_err(dev, "Invalid chipid: %02x (expecting 0xb0)\n",
1024 chipid[0]);
1025 return -EINVAL;
1026 }
1027
1028 /* Clear all pending interrupts */
1029 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);
1030 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);
1031
1032 if (sii902x->i2c->irq > 0) {
1033 regmap_write(sii902x->regmap, SII902X_INT_ENABLE,
1034 SII902X_HOTPLUG_EVENT);
1035
1036 ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL,
1037 sii902x_interrupt,
1038 IRQF_ONESHOT, dev_name(dev),
1039 sii902x);
1040 if (ret)
1041 return ret;
1042 }
1043
1044 sii902x->bridge.funcs = &sii902x_bridge_funcs;
1045 sii902x->bridge.of_node = dev->of_node;
1046 sii902x->bridge.timings = &default_sii902x_timings;
1047 sii902x->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID;
1048
1049 if (sii902x->i2c->irq > 0)
1050 sii902x->bridge.ops |= DRM_BRIDGE_OP_HPD;
1051
1052 drm_bridge_add(&sii902x->bridge);
1053
1054 sii902x_audio_codec_init(sii902x, dev);
1055
1056 i2c_set_clientdata(sii902x->i2c, sii902x);
1057
1058 sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev,
1059 1, 0, I2C_MUX_GATE,
1060 sii902x_i2c_bypass_select,
1061 sii902x_i2c_bypass_deselect);
1062 if (!sii902x->i2cmux)
1063 return -ENOMEM;
1064
1065 sii902x->i2cmux->priv = sii902x;
1066 return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0);
1067}
1068
1069static int sii902x_probe(struct i2c_client *client,
1070 const struct i2c_device_id *id)
1071{
1072 struct device *dev = &client->dev;
1073 struct device_node *endpoint;
1074 struct sii902x *sii902x;
1075 int ret;
1076
1077 ret = i2c_check_functionality(client->adapter,
1078 I2C_FUNC_SMBUS_BYTE_DATA);
1079 if (!ret) {
1080 dev_err(dev, "I2C adapter not suitable\n");
1081 return -EIO;
1082 }
1083
1084 sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL);
1085 if (!sii902x)
1086 return -ENOMEM;
1087
1088 sii902x->i2c = client;
1089 sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config);
1090 if (IS_ERR(sii902x->regmap))
1091 return PTR_ERR(sii902x->regmap);
1092
1093 sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset",
1094 GPIOD_OUT_LOW);
1095 if (IS_ERR(sii902x->reset_gpio)) {
1096 dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n",
1097 PTR_ERR(sii902x->reset_gpio));
1098 return PTR_ERR(sii902x->reset_gpio);
1099 }
1100
1101 endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1);
1102 if (endpoint) {
1103 struct device_node *remote = of_graph_get_remote_port_parent(endpoint);
1104
1105 of_node_put(endpoint);
1106 if (!remote) {
1107 dev_err(dev, "Endpoint in port@1 unconnected\n");
1108 return -ENODEV;
1109 }
1110
1111 if (!of_device_is_available(remote)) {
1112 dev_err(dev, "port@1 remote device is disabled\n");
1113 of_node_put(remote);
1114 return -ENODEV;
1115 }
1116
1117 sii902x->next_bridge = of_drm_find_bridge(remote);
1118 of_node_put(remote);
1119 if (!sii902x->next_bridge)
1120 return -EPROBE_DEFER;
1121 }
1122
1123 mutex_init(&sii902x->mutex);
1124
1125 sii902x->supplies[0].supply = "iovcc";
1126 sii902x->supplies[1].supply = "cvcc12";
1127 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sii902x->supplies),
1128 sii902x->supplies);
1129 if (ret < 0)
1130 return ret;
1131
1132 ret = regulator_bulk_enable(ARRAY_SIZE(sii902x->supplies),
1133 sii902x->supplies);
1134 if (ret < 0) {
1135 dev_err_probe(dev, ret, "Failed to enable supplies");
1136 return ret;
1137 }
1138
1139 ret = sii902x_init(sii902x);
1140 if (ret < 0) {
1141 regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies),
1142 sii902x->supplies);
1143 }
1144
1145 return ret;
1146}
1147
1148static void sii902x_remove(struct i2c_client *client)
1149
1150{
1151 struct sii902x *sii902x = i2c_get_clientdata(client);
1152
1153 i2c_mux_del_adapters(sii902x->i2cmux);
1154 drm_bridge_remove(&sii902x->bridge);
1155 regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies),
1156 sii902x->supplies);
1157}
1158
1159static const struct of_device_id sii902x_dt_ids[] = {
1160 { .compatible = "sil,sii9022", },
1161 { }
1162};
1163MODULE_DEVICE_TABLE(of, sii902x_dt_ids);
1164
1165static const struct i2c_device_id sii902x_i2c_ids[] = {
1166 { "sii9022", 0 },
1167 { },
1168};
1169MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids);
1170
1171static struct i2c_driver sii902x_driver = {
1172 .probe = sii902x_probe,
1173 .remove = sii902x_remove,
1174 .driver = {
1175 .name = "sii902x",
1176 .of_match_table = sii902x_dt_ids,
1177 },
1178 .id_table = sii902x_i2c_ids,
1179};
1180module_i2c_driver(sii902x_driver);
1181
1182MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
1183MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges");
1184MODULE_LICENSE("GPL");