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5a544cce HV |
1 | /* |
2 | * Analog Devices ADV7511 HDMI Transmitter Device Driver | |
3 | * | |
4 | * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved. | |
5 | * | |
6 | * This program is free software; you may redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; version 2 of the License. | |
9 | * | |
10 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
11 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
12 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
13 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
14 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
15 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
16 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
17 | * SOFTWARE. | |
18 | */ | |
19 | ||
20 | ||
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/i2c.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/videodev2.h> | |
27 | #include <linux/gpio.h> | |
28 | #include <linux/workqueue.h> | |
29 | #include <linux/v4l2-dv-timings.h> | |
30 | #include <media/v4l2-device.h> | |
31 | #include <media/v4l2-common.h> | |
32 | #include <media/v4l2-ctrls.h> | |
33 | #include <media/v4l2-dv-timings.h> | |
34 | #include <media/adv7511.h> | |
35 | ||
36 | static int debug; | |
37 | module_param(debug, int, 0644); | |
38 | MODULE_PARM_DESC(debug, "debug level (0-2)"); | |
39 | ||
40 | MODULE_DESCRIPTION("Analog Devices ADV7511 HDMI Transmitter Device Driver"); | |
41 | MODULE_AUTHOR("Hans Verkuil"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
44 | #define MASK_ADV7511_EDID_RDY_INT 0x04 | |
45 | #define MASK_ADV7511_MSEN_INT 0x40 | |
46 | #define MASK_ADV7511_HPD_INT 0x80 | |
47 | ||
48 | #define MASK_ADV7511_HPD_DETECT 0x40 | |
49 | #define MASK_ADV7511_MSEN_DETECT 0x20 | |
50 | #define MASK_ADV7511_EDID_RDY 0x10 | |
51 | ||
52 | #define EDID_MAX_RETRIES (8) | |
53 | #define EDID_DELAY 250 | |
54 | #define EDID_MAX_SEGM 8 | |
55 | ||
56 | #define ADV7511_MAX_WIDTH 1920 | |
57 | #define ADV7511_MAX_HEIGHT 1200 | |
58 | #define ADV7511_MIN_PIXELCLOCK 20000000 | |
59 | #define ADV7511_MAX_PIXELCLOCK 225000000 | |
60 | ||
61 | /* | |
62 | ********************************************************************** | |
63 | * | |
64 | * Arrays with configuration parameters for the ADV7511 | |
65 | * | |
66 | ********************************************************************** | |
67 | */ | |
68 | ||
69 | struct i2c_reg_value { | |
70 | unsigned char reg; | |
71 | unsigned char value; | |
72 | }; | |
73 | ||
74 | struct adv7511_state_edid { | |
75 | /* total number of blocks */ | |
76 | u32 blocks; | |
77 | /* Number of segments read */ | |
78 | u32 segments; | |
79 | uint8_t data[EDID_MAX_SEGM * 256]; | |
80 | /* Number of EDID read retries left */ | |
81 | unsigned read_retries; | |
82 | bool complete; | |
83 | }; | |
84 | ||
85 | struct adv7511_state { | |
86 | struct adv7511_platform_data pdata; | |
87 | struct v4l2_subdev sd; | |
88 | struct media_pad pad; | |
89 | struct v4l2_ctrl_handler hdl; | |
90 | int chip_revision; | |
91 | uint8_t i2c_edid_addr; | |
92 | uint8_t i2c_cec_addr; | |
93 | /* Is the adv7511 powered on? */ | |
94 | bool power_on; | |
95 | /* Did we receive hotplug and rx-sense signals? */ | |
96 | bool have_monitor; | |
97 | /* timings from s_dv_timings */ | |
98 | struct v4l2_dv_timings dv_timings; | |
99 | /* controls */ | |
100 | struct v4l2_ctrl *hdmi_mode_ctrl; | |
101 | struct v4l2_ctrl *hotplug_ctrl; | |
102 | struct v4l2_ctrl *rx_sense_ctrl; | |
103 | struct v4l2_ctrl *have_edid0_ctrl; | |
104 | struct v4l2_ctrl *rgb_quantization_range_ctrl; | |
105 | struct i2c_client *i2c_edid; | |
106 | struct adv7511_state_edid edid; | |
107 | /* Running counter of the number of detected EDIDs (for debugging) */ | |
108 | unsigned edid_detect_counter; | |
109 | struct workqueue_struct *work_queue; | |
110 | struct delayed_work edid_handler; /* work entry */ | |
111 | }; | |
112 | ||
113 | static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd); | |
114 | static bool adv7511_check_edid_status(struct v4l2_subdev *sd); | |
115 | static void adv7511_setup(struct v4l2_subdev *sd); | |
116 | static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq); | |
117 | static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq); | |
118 | ||
119 | ||
120 | static const struct v4l2_dv_timings_cap adv7511_timings_cap = { | |
121 | .type = V4L2_DV_BT_656_1120, | |
aefd4a5a GG |
122 | /* keep this initialization for compatibility with GCC < 4.4.6 */ |
123 | .reserved = { 0 }, | |
124 | V4L2_INIT_BT_TIMINGS(0, ADV7511_MAX_WIDTH, 0, ADV7511_MAX_HEIGHT, | |
125 | ADV7511_MIN_PIXELCLOCK, ADV7511_MAX_PIXELCLOCK, | |
126 | V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | | |
5a544cce | 127 | V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, |
aefd4a5a GG |
128 | V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING | |
129 | V4L2_DV_BT_CAP_CUSTOM) | |
5a544cce HV |
130 | }; |
131 | ||
132 | static inline struct adv7511_state *get_adv7511_state(struct v4l2_subdev *sd) | |
133 | { | |
134 | return container_of(sd, struct adv7511_state, sd); | |
135 | } | |
136 | ||
137 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
138 | { | |
139 | return &container_of(ctrl->handler, struct adv7511_state, hdl)->sd; | |
140 | } | |
141 | ||
142 | /* ------------------------ I2C ----------------------------------------------- */ | |
143 | ||
144 | static s32 adv_smbus_read_byte_data_check(struct i2c_client *client, | |
145 | u8 command, bool check) | |
146 | { | |
147 | union i2c_smbus_data data; | |
148 | ||
149 | if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags, | |
150 | I2C_SMBUS_READ, command, | |
151 | I2C_SMBUS_BYTE_DATA, &data)) | |
152 | return data.byte; | |
153 | if (check) | |
154 | v4l_err(client, "error reading %02x, %02x\n", | |
155 | client->addr, command); | |
156 | return -1; | |
157 | } | |
158 | ||
159 | static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command) | |
160 | { | |
161 | int i; | |
162 | for (i = 0; i < 3; i++) { | |
163 | int ret = adv_smbus_read_byte_data_check(client, command, true); | |
164 | if (ret >= 0) { | |
165 | if (i) | |
166 | v4l_err(client, "read ok after %d retries\n", i); | |
167 | return ret; | |
168 | } | |
169 | } | |
170 | v4l_err(client, "read failed\n"); | |
171 | return -1; | |
172 | } | |
173 | ||
174 | static int adv7511_rd(struct v4l2_subdev *sd, u8 reg) | |
175 | { | |
176 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
177 | ||
178 | return adv_smbus_read_byte_data(client, reg); | |
179 | } | |
180 | ||
181 | static int adv7511_wr(struct v4l2_subdev *sd, u8 reg, u8 val) | |
182 | { | |
183 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
184 | int ret; | |
185 | int i; | |
186 | ||
187 | for (i = 0; i < 3; i++) { | |
188 | ret = i2c_smbus_write_byte_data(client, reg, val); | |
189 | if (ret == 0) | |
190 | return 0; | |
191 | } | |
192 | v4l2_err(sd, "%s: i2c write error\n", __func__); | |
193 | return ret; | |
194 | } | |
195 | ||
196 | /* To set specific bits in the register, a clear-mask is given (to be AND-ed), | |
197 | and then the value-mask (to be OR-ed). */ | |
198 | static inline void adv7511_wr_and_or(struct v4l2_subdev *sd, u8 reg, uint8_t clr_mask, uint8_t val_mask) | |
199 | { | |
200 | adv7511_wr(sd, reg, (adv7511_rd(sd, reg) & clr_mask) | val_mask); | |
201 | } | |
202 | ||
203 | static int adv_smbus_read_i2c_block_data(struct i2c_client *client, | |
204 | u8 command, unsigned length, u8 *values) | |
205 | { | |
206 | union i2c_smbus_data data; | |
207 | int ret; | |
208 | ||
209 | if (length > I2C_SMBUS_BLOCK_MAX) | |
210 | length = I2C_SMBUS_BLOCK_MAX; | |
211 | data.block[0] = length; | |
212 | ||
213 | ret = i2c_smbus_xfer(client->adapter, client->addr, client->flags, | |
214 | I2C_SMBUS_READ, command, | |
215 | I2C_SMBUS_I2C_BLOCK_DATA, &data); | |
216 | memcpy(values, data.block + 1, length); | |
217 | return ret; | |
218 | } | |
219 | ||
220 | static inline void adv7511_edid_rd(struct v4l2_subdev *sd, uint16_t len, uint8_t *buf) | |
221 | { | |
222 | struct adv7511_state *state = get_adv7511_state(sd); | |
223 | int i; | |
224 | int err = 0; | |
225 | ||
226 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
227 | ||
228 | for (i = 0; !err && i < len; i += I2C_SMBUS_BLOCK_MAX) | |
229 | err = adv_smbus_read_i2c_block_data(state->i2c_edid, i, | |
230 | I2C_SMBUS_BLOCK_MAX, buf + i); | |
231 | if (err) | |
232 | v4l2_err(sd, "%s: i2c read error\n", __func__); | |
233 | } | |
234 | ||
235 | static inline bool adv7511_have_hotplug(struct v4l2_subdev *sd) | |
236 | { | |
237 | return adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT; | |
238 | } | |
239 | ||
240 | static inline bool adv7511_have_rx_sense(struct v4l2_subdev *sd) | |
241 | { | |
242 | return adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT; | |
243 | } | |
244 | ||
245 | static void adv7511_csc_conversion_mode(struct v4l2_subdev *sd, uint8_t mode) | |
246 | { | |
247 | adv7511_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5); | |
248 | } | |
249 | ||
250 | static void adv7511_csc_coeff(struct v4l2_subdev *sd, | |
251 | u16 A1, u16 A2, u16 A3, u16 A4, | |
252 | u16 B1, u16 B2, u16 B3, u16 B4, | |
253 | u16 C1, u16 C2, u16 C3, u16 C4) | |
254 | { | |
255 | /* A */ | |
256 | adv7511_wr_and_or(sd, 0x18, 0xe0, A1>>8); | |
257 | adv7511_wr(sd, 0x19, A1); | |
258 | adv7511_wr_and_or(sd, 0x1A, 0xe0, A2>>8); | |
259 | adv7511_wr(sd, 0x1B, A2); | |
260 | adv7511_wr_and_or(sd, 0x1c, 0xe0, A3>>8); | |
261 | adv7511_wr(sd, 0x1d, A3); | |
262 | adv7511_wr_and_or(sd, 0x1e, 0xe0, A4>>8); | |
263 | adv7511_wr(sd, 0x1f, A4); | |
264 | ||
265 | /* B */ | |
266 | adv7511_wr_and_or(sd, 0x20, 0xe0, B1>>8); | |
267 | adv7511_wr(sd, 0x21, B1); | |
268 | adv7511_wr_and_or(sd, 0x22, 0xe0, B2>>8); | |
269 | adv7511_wr(sd, 0x23, B2); | |
270 | adv7511_wr_and_or(sd, 0x24, 0xe0, B3>>8); | |
271 | adv7511_wr(sd, 0x25, B3); | |
272 | adv7511_wr_and_or(sd, 0x26, 0xe0, B4>>8); | |
273 | adv7511_wr(sd, 0x27, B4); | |
274 | ||
275 | /* C */ | |
276 | adv7511_wr_and_or(sd, 0x28, 0xe0, C1>>8); | |
277 | adv7511_wr(sd, 0x29, C1); | |
278 | adv7511_wr_and_or(sd, 0x2A, 0xe0, C2>>8); | |
279 | adv7511_wr(sd, 0x2B, C2); | |
280 | adv7511_wr_and_or(sd, 0x2C, 0xe0, C3>>8); | |
281 | adv7511_wr(sd, 0x2D, C3); | |
282 | adv7511_wr_and_or(sd, 0x2E, 0xe0, C4>>8); | |
283 | adv7511_wr(sd, 0x2F, C4); | |
284 | } | |
285 | ||
286 | static void adv7511_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable) | |
287 | { | |
288 | if (enable) { | |
289 | uint8_t csc_mode = 0; | |
290 | adv7511_csc_conversion_mode(sd, csc_mode); | |
291 | adv7511_csc_coeff(sd, | |
292 | 4096-564, 0, 0, 256, | |
293 | 0, 4096-564, 0, 256, | |
294 | 0, 0, 4096-564, 256); | |
295 | /* enable CSC */ | |
296 | adv7511_wr_and_or(sd, 0x18, 0x7f, 0x80); | |
297 | /* AVI infoframe: Limited range RGB (16-235) */ | |
298 | adv7511_wr_and_or(sd, 0x57, 0xf3, 0x04); | |
299 | } else { | |
300 | /* disable CSC */ | |
301 | adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0); | |
302 | /* AVI infoframe: Full range RGB (0-255) */ | |
303 | adv7511_wr_and_or(sd, 0x57, 0xf3, 0x08); | |
304 | } | |
305 | } | |
306 | ||
307 | static void adv7511_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd) | |
308 | { | |
309 | struct adv7511_state *state = get_adv7511_state(sd); | |
310 | if (state->dv_timings.bt.standards & V4L2_DV_BT_STD_CEA861) { | |
311 | /* CEA format, not IT */ | |
312 | adv7511_wr_and_or(sd, 0x57, 0x7f, 0x00); | |
313 | } else { | |
314 | /* IT format */ | |
315 | adv7511_wr_and_or(sd, 0x57, 0x7f, 0x80); | |
316 | } | |
317 | } | |
318 | ||
319 | static int adv7511_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl) | |
320 | { | |
321 | switch (ctrl->val) { | |
322 | default: | |
323 | return -EINVAL; | |
324 | break; | |
325 | case V4L2_DV_RGB_RANGE_AUTO: { | |
326 | /* automatic */ | |
327 | struct adv7511_state *state = get_adv7511_state(sd); | |
328 | ||
329 | if (state->dv_timings.bt.standards & V4L2_DV_BT_STD_CEA861) { | |
330 | /* cea format, RGB limited range (16-235) */ | |
331 | adv7511_csc_rgb_full2limit(sd, true); | |
332 | } else { | |
333 | /* not cea format, RGB full range (0-255) */ | |
334 | adv7511_csc_rgb_full2limit(sd, false); | |
335 | } | |
336 | } | |
337 | break; | |
338 | case V4L2_DV_RGB_RANGE_LIMITED: | |
339 | /* RGB limited range (16-235) */ | |
340 | adv7511_csc_rgb_full2limit(sd, true); | |
341 | break; | |
342 | case V4L2_DV_RGB_RANGE_FULL: | |
343 | /* RGB full range (0-255) */ | |
344 | adv7511_csc_rgb_full2limit(sd, false); | |
345 | break; | |
346 | } | |
347 | return 0; | |
348 | } | |
349 | ||
350 | /* ------------------------------ CTRL OPS ------------------------------ */ | |
351 | ||
352 | static int adv7511_s_ctrl(struct v4l2_ctrl *ctrl) | |
353 | { | |
354 | struct v4l2_subdev *sd = to_sd(ctrl); | |
355 | struct adv7511_state *state = get_adv7511_state(sd); | |
356 | ||
357 | v4l2_dbg(1, debug, sd, "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val); | |
358 | ||
359 | if (state->hdmi_mode_ctrl == ctrl) { | |
360 | /* Set HDMI or DVI-D */ | |
361 | adv7511_wr_and_or(sd, 0xaf, 0xfd, ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00); | |
362 | return 0; | |
363 | } | |
364 | if (state->rgb_quantization_range_ctrl == ctrl) | |
365 | return adv7511_set_rgb_quantization_mode(sd, ctrl); | |
366 | ||
367 | return -EINVAL; | |
368 | } | |
369 | ||
370 | static const struct v4l2_ctrl_ops adv7511_ctrl_ops = { | |
371 | .s_ctrl = adv7511_s_ctrl, | |
372 | }; | |
373 | ||
374 | /* ---------------------------- CORE OPS ------------------------------------------- */ | |
375 | ||
376 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
377 | static void adv7511_inv_register(struct v4l2_subdev *sd) | |
378 | { | |
379 | v4l2_info(sd, "0x000-0x0ff: Main Map\n"); | |
380 | } | |
381 | ||
382 | static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) | |
383 | { | |
384 | reg->size = 1; | |
385 | switch (reg->reg >> 8) { | |
386 | case 0: | |
387 | reg->val = adv7511_rd(sd, reg->reg & 0xff); | |
388 | break; | |
389 | default: | |
390 | v4l2_info(sd, "Register %03llx not supported\n", reg->reg); | |
391 | adv7511_inv_register(sd); | |
392 | break; | |
393 | } | |
394 | return 0; | |
395 | } | |
396 | ||
397 | static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) | |
398 | { | |
399 | switch (reg->reg >> 8) { | |
400 | case 0: | |
401 | adv7511_wr(sd, reg->reg & 0xff, reg->val & 0xff); | |
402 | break; | |
403 | default: | |
404 | v4l2_info(sd, "Register %03llx not supported\n", reg->reg); | |
405 | adv7511_inv_register(sd); | |
406 | break; | |
407 | } | |
408 | return 0; | |
409 | } | |
410 | #endif | |
411 | ||
412 | static int adv7511_log_status(struct v4l2_subdev *sd) | |
413 | { | |
414 | struct adv7511_state *state = get_adv7511_state(sd); | |
415 | struct adv7511_state_edid *edid = &state->edid; | |
416 | ||
417 | static const char * const states[] = { | |
418 | "in reset", | |
419 | "reading EDID", | |
420 | "idle", | |
421 | "initializing HDCP", | |
422 | "HDCP enabled", | |
423 | "initializing HDCP repeater", | |
424 | "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" | |
425 | }; | |
426 | static const char * const errors[] = { | |
427 | "no error", | |
428 | "bad receiver BKSV", | |
429 | "Ri mismatch", | |
430 | "Pj mismatch", | |
431 | "i2c error", | |
432 | "timed out", | |
433 | "max repeater cascade exceeded", | |
434 | "hash check failed", | |
435 | "too many devices", | |
436 | "9", "A", "B", "C", "D", "E", "F" | |
437 | }; | |
438 | ||
439 | v4l2_info(sd, "power %s\n", state->power_on ? "on" : "off"); | |
440 | v4l2_info(sd, "%s hotplug, %s Rx Sense, %s EDID (%d block(s))\n", | |
441 | (adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT) ? "detected" : "no", | |
442 | (adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT) ? "detected" : "no", | |
443 | edid->segments ? "found" : "no", | |
444 | edid->blocks); | |
445 | v4l2_info(sd, "%s output %s\n", | |
446 | (adv7511_rd(sd, 0xaf) & 0x02) ? | |
447 | "HDMI" : "DVI-D", | |
448 | (adv7511_rd(sd, 0xa1) & 0x3c) ? | |
449 | "disabled" : "enabled"); | |
450 | v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n", | |
451 | states[adv7511_rd(sd, 0xc8) & 0xf], | |
452 | errors[adv7511_rd(sd, 0xc8) >> 4], state->edid_detect_counter, | |
453 | adv7511_rd(sd, 0x94), adv7511_rd(sd, 0x96)); | |
454 | v4l2_info(sd, "RGB quantization: %s range\n", adv7511_rd(sd, 0x18) & 0x80 ? "limited" : "full"); | |
3ecabed1 MB |
455 | if (adv7511_rd(sd, 0xaf) & 0x02) { |
456 | /* HDMI only */ | |
457 | u8 manual_cts = adv7511_rd(sd, 0x0a) & 0x80; | |
458 | u32 N = (adv7511_rd(sd, 0x01) & 0xf) << 16 | | |
459 | adv7511_rd(sd, 0x02) << 8 | | |
460 | adv7511_rd(sd, 0x03); | |
461 | u8 vic_detect = adv7511_rd(sd, 0x3e) >> 2; | |
462 | u8 vic_sent = adv7511_rd(sd, 0x3d) & 0x3f; | |
463 | u32 CTS; | |
464 | ||
465 | if (manual_cts) | |
466 | CTS = (adv7511_rd(sd, 0x07) & 0xf) << 16 | | |
467 | adv7511_rd(sd, 0x08) << 8 | | |
468 | adv7511_rd(sd, 0x09); | |
469 | else | |
470 | CTS = (adv7511_rd(sd, 0x04) & 0xf) << 16 | | |
471 | adv7511_rd(sd, 0x05) << 8 | | |
472 | adv7511_rd(sd, 0x06); | |
473 | v4l2_info(sd, "CTS %s mode: N %d, CTS %d\n", | |
474 | manual_cts ? "manual" : "automatic", N, CTS); | |
475 | v4l2_info(sd, "VIC: detected %d, sent %d\n", | |
476 | vic_detect, vic_sent); | |
477 | } | |
5a544cce HV |
478 | if (state->dv_timings.type == V4L2_DV_BT_656_1120) |
479 | v4l2_print_dv_timings(sd->name, "timings: ", | |
480 | &state->dv_timings, false); | |
481 | else | |
482 | v4l2_info(sd, "no timings set\n"); | |
483 | v4l2_info(sd, "i2c edid addr: 0x%x\n", state->i2c_edid_addr); | |
484 | v4l2_info(sd, "i2c cec addr: 0x%x\n", state->i2c_cec_addr); | |
485 | return 0; | |
486 | } | |
487 | ||
488 | /* Power up/down adv7511 */ | |
489 | static int adv7511_s_power(struct v4l2_subdev *sd, int on) | |
490 | { | |
491 | struct adv7511_state *state = get_adv7511_state(sd); | |
492 | const int retries = 20; | |
493 | int i; | |
494 | ||
495 | v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off"); | |
496 | ||
497 | state->power_on = on; | |
498 | ||
499 | if (!on) { | |
500 | /* Power down */ | |
501 | adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40); | |
502 | return true; | |
503 | } | |
504 | ||
505 | /* Power up */ | |
506 | /* The adv7511 does not always come up immediately. | |
507 | Retry multiple times. */ | |
508 | for (i = 0; i < retries; i++) { | |
509 | adv7511_wr_and_or(sd, 0x41, 0xbf, 0x0); | |
510 | if ((adv7511_rd(sd, 0x41) & 0x40) == 0) | |
511 | break; | |
512 | adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40); | |
513 | msleep(10); | |
514 | } | |
515 | if (i == retries) { | |
516 | v4l2_dbg(1, debug, sd, "%s: failed to powerup the adv7511!\n", __func__); | |
517 | adv7511_s_power(sd, 0); | |
518 | return false; | |
519 | } | |
520 | if (i > 1) | |
521 | v4l2_dbg(1, debug, sd, "%s: needed %d retries to powerup the adv7511\n", __func__, i); | |
522 | ||
523 | /* Reserved registers that must be set */ | |
524 | adv7511_wr(sd, 0x98, 0x03); | |
525 | adv7511_wr_and_or(sd, 0x9a, 0xfe, 0x70); | |
526 | adv7511_wr(sd, 0x9c, 0x30); | |
527 | adv7511_wr_and_or(sd, 0x9d, 0xfc, 0x01); | |
528 | adv7511_wr(sd, 0xa2, 0xa4); | |
529 | adv7511_wr(sd, 0xa3, 0xa4); | |
530 | adv7511_wr(sd, 0xe0, 0xd0); | |
531 | adv7511_wr(sd, 0xf9, 0x00); | |
532 | ||
533 | adv7511_wr(sd, 0x43, state->i2c_edid_addr); | |
534 | ||
535 | /* Set number of attempts to read the EDID */ | |
536 | adv7511_wr(sd, 0xc9, 0xf); | |
537 | return true; | |
538 | } | |
539 | ||
540 | /* Enable interrupts */ | |
541 | static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable) | |
542 | { | |
543 | uint8_t irqs = MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT; | |
544 | uint8_t irqs_rd; | |
545 | int retries = 100; | |
546 | ||
547 | v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? "enable" : "disable"); | |
548 | ||
549 | /* The datasheet says that the EDID ready interrupt should be | |
550 | disabled if there is no hotplug. */ | |
551 | if (!enable) | |
552 | irqs = 0; | |
553 | else if (adv7511_have_hotplug(sd)) | |
554 | irqs |= MASK_ADV7511_EDID_RDY_INT; | |
555 | ||
556 | /* | |
557 | * This i2c write can fail (approx. 1 in 1000 writes). But it | |
558 | * is essential that this register is correct, so retry it | |
559 | * multiple times. | |
560 | * | |
561 | * Note that the i2c write does not report an error, but the readback | |
562 | * clearly shows the wrong value. | |
563 | */ | |
564 | do { | |
565 | adv7511_wr(sd, 0x94, irqs); | |
566 | irqs_rd = adv7511_rd(sd, 0x94); | |
567 | } while (retries-- && irqs_rd != irqs); | |
568 | ||
569 | if (irqs_rd == irqs) | |
570 | return; | |
571 | v4l2_err(sd, "Could not set interrupts: hw failure?\n"); | |
572 | } | |
573 | ||
574 | /* Interrupt handler */ | |
575 | static int adv7511_isr(struct v4l2_subdev *sd, u32 status, bool *handled) | |
576 | { | |
577 | uint8_t irq_status; | |
578 | ||
579 | /* disable interrupts to prevent a race condition */ | |
580 | adv7511_set_isr(sd, false); | |
581 | irq_status = adv7511_rd(sd, 0x96); | |
582 | /* clear detected interrupts */ | |
583 | adv7511_wr(sd, 0x96, irq_status); | |
584 | ||
585 | v4l2_dbg(1, debug, sd, "%s: irq 0x%x\n", __func__, irq_status); | |
586 | ||
587 | if (irq_status & (MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT)) | |
588 | adv7511_check_monitor_present_status(sd); | |
589 | if (irq_status & MASK_ADV7511_EDID_RDY_INT) | |
590 | adv7511_check_edid_status(sd); | |
591 | ||
592 | /* enable interrupts */ | |
593 | adv7511_set_isr(sd, true); | |
594 | ||
595 | if (handled) | |
596 | *handled = true; | |
597 | return 0; | |
598 | } | |
599 | ||
5a544cce HV |
600 | static const struct v4l2_subdev_core_ops adv7511_core_ops = { |
601 | .log_status = adv7511_log_status, | |
602 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
603 | .g_register = adv7511_g_register, | |
604 | .s_register = adv7511_s_register, | |
605 | #endif | |
606 | .s_power = adv7511_s_power, | |
607 | .interrupt_service_routine = adv7511_isr, | |
608 | }; | |
609 | ||
610 | /* ------------------------------ VIDEO OPS ------------------------------ */ | |
611 | ||
612 | /* Enable/disable adv7511 output */ | |
613 | static int adv7511_s_stream(struct v4l2_subdev *sd, int enable) | |
614 | { | |
615 | struct adv7511_state *state = get_adv7511_state(sd); | |
616 | ||
617 | v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis")); | |
618 | adv7511_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c)); | |
619 | if (enable) { | |
620 | adv7511_check_monitor_present_status(sd); | |
621 | } else { | |
622 | adv7511_s_power(sd, 0); | |
623 | state->have_monitor = false; | |
624 | } | |
625 | return 0; | |
626 | } | |
627 | ||
628 | static int adv7511_s_dv_timings(struct v4l2_subdev *sd, | |
629 | struct v4l2_dv_timings *timings) | |
630 | { | |
631 | struct adv7511_state *state = get_adv7511_state(sd); | |
632 | ||
633 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
634 | ||
635 | /* quick sanity check */ | |
636 | if (!v4l2_valid_dv_timings(timings, &adv7511_timings_cap, NULL, NULL)) | |
637 | return -EINVAL; | |
638 | ||
639 | /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings | |
640 | if the format is one of the CEA or DMT timings. */ | |
641 | v4l2_find_dv_timings_cap(timings, &adv7511_timings_cap, 0, NULL, NULL); | |
642 | ||
643 | timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS; | |
644 | ||
645 | /* save timings */ | |
646 | state->dv_timings = *timings; | |
647 | ||
648 | /* update quantization range based on new dv_timings */ | |
649 | adv7511_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl); | |
650 | ||
651 | /* update AVI infoframe */ | |
652 | adv7511_set_IT_content_AVI_InfoFrame(sd); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | static int adv7511_g_dv_timings(struct v4l2_subdev *sd, | |
658 | struct v4l2_dv_timings *timings) | |
659 | { | |
660 | struct adv7511_state *state = get_adv7511_state(sd); | |
661 | ||
662 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
663 | ||
664 | if (!timings) | |
665 | return -EINVAL; | |
666 | ||
667 | *timings = state->dv_timings; | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
672 | static int adv7511_enum_dv_timings(struct v4l2_subdev *sd, | |
673 | struct v4l2_enum_dv_timings *timings) | |
674 | { | |
9646171f LP |
675 | if (timings->pad != 0) |
676 | return -EINVAL; | |
677 | ||
5a544cce HV |
678 | return v4l2_enum_dv_timings_cap(timings, &adv7511_timings_cap, NULL, NULL); |
679 | } | |
680 | ||
681 | static int adv7511_dv_timings_cap(struct v4l2_subdev *sd, | |
682 | struct v4l2_dv_timings_cap *cap) | |
683 | { | |
9646171f LP |
684 | if (cap->pad != 0) |
685 | return -EINVAL; | |
686 | ||
5a544cce HV |
687 | *cap = adv7511_timings_cap; |
688 | return 0; | |
689 | } | |
690 | ||
691 | static const struct v4l2_subdev_video_ops adv7511_video_ops = { | |
692 | .s_stream = adv7511_s_stream, | |
693 | .s_dv_timings = adv7511_s_dv_timings, | |
694 | .g_dv_timings = adv7511_g_dv_timings, | |
5a544cce HV |
695 | }; |
696 | ||
697 | /* ------------------------------ AUDIO OPS ------------------------------ */ | |
698 | static int adv7511_s_audio_stream(struct v4l2_subdev *sd, int enable) | |
699 | { | |
700 | v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis")); | |
701 | ||
702 | if (enable) | |
703 | adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x80); | |
704 | else | |
705 | adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x40); | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq) | |
711 | { | |
712 | u32 N; | |
713 | ||
714 | switch (freq) { | |
715 | case 32000: N = 4096; break; | |
716 | case 44100: N = 6272; break; | |
717 | case 48000: N = 6144; break; | |
718 | case 88200: N = 12544; break; | |
719 | case 96000: N = 12288; break; | |
720 | case 176400: N = 25088; break; | |
721 | case 192000: N = 24576; break; | |
722 | default: | |
723 | return -EINVAL; | |
724 | } | |
725 | ||
726 | /* Set N (used with CTS to regenerate the audio clock) */ | |
727 | adv7511_wr(sd, 0x01, (N >> 16) & 0xf); | |
728 | adv7511_wr(sd, 0x02, (N >> 8) & 0xff); | |
729 | adv7511_wr(sd, 0x03, N & 0xff); | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
734 | static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq) | |
735 | { | |
736 | u32 i2s_sf; | |
737 | ||
738 | switch (freq) { | |
739 | case 32000: i2s_sf = 0x30; break; | |
740 | case 44100: i2s_sf = 0x00; break; | |
741 | case 48000: i2s_sf = 0x20; break; | |
742 | case 88200: i2s_sf = 0x80; break; | |
743 | case 96000: i2s_sf = 0xa0; break; | |
744 | case 176400: i2s_sf = 0xc0; break; | |
745 | case 192000: i2s_sf = 0xe0; break; | |
746 | default: | |
747 | return -EINVAL; | |
748 | } | |
749 | ||
750 | /* Set sampling frequency for I2S audio to 48 kHz */ | |
751 | adv7511_wr_and_or(sd, 0x15, 0xf, i2s_sf); | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | static int adv7511_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) | |
757 | { | |
758 | /* Only 2 channels in use for application */ | |
759 | adv7511_wr_and_or(sd, 0x73, 0xf8, 0x1); | |
760 | /* Speaker mapping */ | |
761 | adv7511_wr(sd, 0x76, 0x00); | |
762 | ||
763 | /* 16 bit audio word length */ | |
764 | adv7511_wr_and_or(sd, 0x14, 0xf0, 0x02); | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
769 | static const struct v4l2_subdev_audio_ops adv7511_audio_ops = { | |
770 | .s_stream = adv7511_s_audio_stream, | |
771 | .s_clock_freq = adv7511_s_clock_freq, | |
772 | .s_i2s_clock_freq = adv7511_s_i2s_clock_freq, | |
773 | .s_routing = adv7511_s_routing, | |
774 | }; | |
775 | ||
9646171f LP |
776 | /* ---------------------------- PAD OPS ------------------------------------- */ |
777 | ||
778 | static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) | |
779 | { | |
780 | struct adv7511_state *state = get_adv7511_state(sd); | |
781 | ||
782 | if (edid->pad != 0) | |
783 | return -EINVAL; | |
784 | if ((edid->blocks == 0) || (edid->blocks > 256)) | |
785 | return -EINVAL; | |
9646171f LP |
786 | if (!state->edid.segments) { |
787 | v4l2_dbg(1, debug, sd, "EDID segment 0 not found\n"); | |
788 | return -ENODATA; | |
789 | } | |
790 | if (edid->start_block >= state->edid.segments * 2) | |
791 | return -E2BIG; | |
792 | if ((edid->blocks + edid->start_block) >= state->edid.segments * 2) | |
793 | edid->blocks = state->edid.segments * 2 - edid->start_block; | |
794 | ||
795 | memcpy(edid->edid, &state->edid.data[edid->start_block * 128], | |
796 | 128 * edid->blocks); | |
797 | return 0; | |
798 | } | |
799 | ||
800 | static const struct v4l2_subdev_pad_ops adv7511_pad_ops = { | |
801 | .get_edid = adv7511_get_edid, | |
802 | .enum_dv_timings = adv7511_enum_dv_timings, | |
803 | .dv_timings_cap = adv7511_dv_timings_cap, | |
804 | }; | |
805 | ||
5a544cce HV |
806 | /* --------------------- SUBDEV OPS --------------------------------------- */ |
807 | ||
808 | static const struct v4l2_subdev_ops adv7511_ops = { | |
809 | .core = &adv7511_core_ops, | |
810 | .pad = &adv7511_pad_ops, | |
811 | .video = &adv7511_video_ops, | |
812 | .audio = &adv7511_audio_ops, | |
813 | }; | |
814 | ||
815 | /* ----------------------------------------------------------------------- */ | |
816 | static void adv7511_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, int segment, uint8_t *buf) | |
817 | { | |
818 | if (debug >= lvl) { | |
819 | int i, j; | |
820 | v4l2_dbg(lvl, debug, sd, "edid segment %d\n", segment); | |
821 | for (i = 0; i < 256; i += 16) { | |
822 | u8 b[128]; | |
823 | u8 *bp = b; | |
824 | if (i == 128) | |
825 | v4l2_dbg(lvl, debug, sd, "\n"); | |
826 | for (j = i; j < i + 16; j++) { | |
827 | sprintf(bp, "0x%02x, ", buf[j]); | |
828 | bp += 6; | |
829 | } | |
830 | bp[0] = '\0'; | |
831 | v4l2_dbg(lvl, debug, sd, "%s\n", b); | |
832 | } | |
833 | } | |
834 | } | |
835 | ||
836 | static void adv7511_edid_handler(struct work_struct *work) | |
837 | { | |
838 | struct delayed_work *dwork = to_delayed_work(work); | |
839 | struct adv7511_state *state = container_of(dwork, struct adv7511_state, edid_handler); | |
840 | struct v4l2_subdev *sd = &state->sd; | |
841 | struct adv7511_edid_detect ed; | |
842 | ||
843 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
844 | ||
845 | if (adv7511_check_edid_status(sd)) { | |
846 | /* Return if we received the EDID. */ | |
847 | return; | |
848 | } | |
849 | ||
850 | if (adv7511_have_hotplug(sd)) { | |
851 | /* We must retry reading the EDID several times, it is possible | |
852 | * that initially the EDID couldn't be read due to i2c errors | |
853 | * (DVI connectors are particularly prone to this problem). */ | |
854 | if (state->edid.read_retries) { | |
855 | state->edid.read_retries--; | |
856 | v4l2_dbg(1, debug, sd, "%s: edid read failed\n", __func__); | |
857 | state->have_monitor = false; | |
858 | adv7511_s_power(sd, false); | |
859 | adv7511_s_power(sd, true); | |
860 | queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY); | |
861 | return; | |
862 | } | |
863 | } | |
864 | ||
865 | /* We failed to read the EDID, so send an event for this. */ | |
866 | ed.present = false; | |
867 | ed.segment = adv7511_rd(sd, 0xc4); | |
868 | v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed); | |
869 | v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__); | |
870 | } | |
871 | ||
872 | static void adv7511_audio_setup(struct v4l2_subdev *sd) | |
873 | { | |
874 | v4l2_dbg(1, debug, sd, "%s\n", __func__); | |
875 | ||
876 | adv7511_s_i2s_clock_freq(sd, 48000); | |
877 | adv7511_s_clock_freq(sd, 48000); | |
878 | adv7511_s_routing(sd, 0, 0, 0); | |
879 | } | |
880 | ||
881 | /* Configure hdmi transmitter. */ | |
882 | static void adv7511_setup(struct v4l2_subdev *sd) | |
883 | { | |
884 | struct adv7511_state *state = get_adv7511_state(sd); | |
885 | v4l2_dbg(1, debug, sd, "%s\n", __func__); | |
886 | ||
887 | /* Input format: RGB 4:4:4 */ | |
888 | adv7511_wr_and_or(sd, 0x15, 0xf0, 0x0); | |
889 | /* Output format: RGB 4:4:4 */ | |
890 | adv7511_wr_and_or(sd, 0x16, 0x7f, 0x0); | |
891 | /* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, Aspect ratio: 16:9 */ | |
892 | adv7511_wr_and_or(sd, 0x17, 0xf9, 0x06); | |
893 | /* Disable pixel repetition */ | |
894 | adv7511_wr_and_or(sd, 0x3b, 0x9f, 0x0); | |
895 | /* Disable CSC */ | |
896 | adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0); | |
897 | /* Output format: RGB 4:4:4, Active Format Information is valid, | |
898 | * underscanned */ | |
899 | adv7511_wr_and_or(sd, 0x55, 0x9c, 0x12); | |
900 | /* AVI Info frame packet enable, Audio Info frame disable */ | |
901 | adv7511_wr_and_or(sd, 0x44, 0xe7, 0x10); | |
902 | /* Colorimetry, Active format aspect ratio: same as picure. */ | |
903 | adv7511_wr(sd, 0x56, 0xa8); | |
904 | /* No encryption */ | |
905 | adv7511_wr_and_or(sd, 0xaf, 0xed, 0x0); | |
906 | ||
907 | /* Positive clk edge capture for input video clock */ | |
908 | adv7511_wr_and_or(sd, 0xba, 0x1f, 0x60); | |
909 | ||
910 | adv7511_audio_setup(sd); | |
911 | ||
912 | v4l2_ctrl_handler_setup(&state->hdl); | |
913 | } | |
914 | ||
915 | static void adv7511_notify_monitor_detect(struct v4l2_subdev *sd) | |
916 | { | |
917 | struct adv7511_monitor_detect mdt; | |
918 | struct adv7511_state *state = get_adv7511_state(sd); | |
919 | ||
920 | mdt.present = state->have_monitor; | |
921 | v4l2_subdev_notify(sd, ADV7511_MONITOR_DETECT, (void *)&mdt); | |
922 | } | |
923 | ||
924 | static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd) | |
925 | { | |
926 | struct adv7511_state *state = get_adv7511_state(sd); | |
927 | /* read hotplug and rx-sense state */ | |
928 | uint8_t status = adv7511_rd(sd, 0x42); | |
929 | ||
930 | v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n", | |
931 | __func__, | |
932 | status, | |
933 | status & MASK_ADV7511_HPD_DETECT ? ", hotplug" : "", | |
934 | status & MASK_ADV7511_MSEN_DETECT ? ", rx-sense" : ""); | |
935 | ||
936 | /* update read only ctrls */ | |
937 | v4l2_ctrl_s_ctrl(state->hotplug_ctrl, adv7511_have_hotplug(sd) ? 0x1 : 0x0); | |
938 | v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, adv7511_have_rx_sense(sd) ? 0x1 : 0x0); | |
939 | v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0); | |
940 | ||
941 | if ((status & MASK_ADV7511_HPD_DETECT) && ((status & MASK_ADV7511_MSEN_DETECT) || state->edid.segments)) { | |
942 | v4l2_dbg(1, debug, sd, "%s: hotplug and (rx-sense or edid)\n", __func__); | |
943 | if (!state->have_monitor) { | |
944 | v4l2_dbg(1, debug, sd, "%s: monitor detected\n", __func__); | |
945 | state->have_monitor = true; | |
946 | adv7511_set_isr(sd, true); | |
947 | if (!adv7511_s_power(sd, true)) { | |
948 | v4l2_dbg(1, debug, sd, "%s: monitor detected, powerup failed\n", __func__); | |
949 | return; | |
950 | } | |
951 | adv7511_setup(sd); | |
952 | adv7511_notify_monitor_detect(sd); | |
953 | state->edid.read_retries = EDID_MAX_RETRIES; | |
954 | queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY); | |
955 | } | |
956 | } else if (status & MASK_ADV7511_HPD_DETECT) { | |
957 | v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__); | |
958 | state->edid.read_retries = EDID_MAX_RETRIES; | |
959 | queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY); | |
960 | } else if (!(status & MASK_ADV7511_HPD_DETECT)) { | |
961 | v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__); | |
962 | if (state->have_monitor) { | |
963 | v4l2_dbg(1, debug, sd, "%s: monitor not detected\n", __func__); | |
964 | state->have_monitor = false; | |
965 | adv7511_notify_monitor_detect(sd); | |
966 | } | |
967 | adv7511_s_power(sd, false); | |
968 | memset(&state->edid, 0, sizeof(struct adv7511_state_edid)); | |
969 | } | |
970 | } | |
971 | ||
972 | static bool edid_block_verify_crc(uint8_t *edid_block) | |
973 | { | |
5a544cce | 974 | uint8_t sum = 0; |
928b0fe7 | 975 | int i; |
5a544cce HV |
976 | |
977 | for (i = 0; i < 128; i++) | |
928b0fe7 MB |
978 | sum += edid_block[i]; |
979 | return sum == 0; | |
5a544cce HV |
980 | } |
981 | ||
928b0fe7 | 982 | static bool edid_verify_crc(struct v4l2_subdev *sd, u32 segment) |
5a544cce HV |
983 | { |
984 | struct adv7511_state *state = get_adv7511_state(sd); | |
985 | u32 blocks = state->edid.blocks; | |
986 | uint8_t *data = state->edid.data; | |
987 | ||
928b0fe7 MB |
988 | if (!edid_block_verify_crc(&data[segment * 256])) |
989 | return false; | |
990 | if ((segment + 1) * 2 <= blocks) | |
991 | return edid_block_verify_crc(&data[segment * 256 + 128]); | |
992 | return true; | |
993 | } | |
994 | ||
995 | static bool edid_verify_header(struct v4l2_subdev *sd, u32 segment) | |
996 | { | |
997 | static const u8 hdmi_header[] = { | |
998 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 | |
999 | }; | |
1000 | struct adv7511_state *state = get_adv7511_state(sd); | |
1001 | u8 *data = state->edid.data; | |
1002 | ||
1003 | if (segment != 0) | |
5a544cce | 1004 | return true; |
928b0fe7 | 1005 | return !memcmp(data, hdmi_header, sizeof(hdmi_header)); |
5a544cce HV |
1006 | } |
1007 | ||
1008 | static bool adv7511_check_edid_status(struct v4l2_subdev *sd) | |
1009 | { | |
1010 | struct adv7511_state *state = get_adv7511_state(sd); | |
1011 | uint8_t edidRdy = adv7511_rd(sd, 0xc5); | |
1012 | ||
1013 | v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n", | |
1014 | __func__, EDID_MAX_RETRIES - state->edid.read_retries); | |
1015 | ||
1016 | if (state->edid.complete) | |
1017 | return true; | |
1018 | ||
1019 | if (edidRdy & MASK_ADV7511_EDID_RDY) { | |
1020 | int segment = adv7511_rd(sd, 0xc4); | |
1021 | struct adv7511_edid_detect ed; | |
1022 | ||
1023 | if (segment >= EDID_MAX_SEGM) { | |
1024 | v4l2_err(sd, "edid segment number too big\n"); | |
1025 | return false; | |
1026 | } | |
1027 | v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment); | |
1028 | adv7511_edid_rd(sd, 256, &state->edid.data[segment * 256]); | |
1029 | adv7511_dbg_dump_edid(2, debug, sd, segment, &state->edid.data[segment * 256]); | |
1030 | if (segment == 0) { | |
1031 | state->edid.blocks = state->edid.data[0x7e] + 1; | |
1032 | v4l2_dbg(1, debug, sd, "%s: %d blocks in total\n", __func__, state->edid.blocks); | |
1033 | } | |
928b0fe7 MB |
1034 | if (!edid_verify_crc(sd, segment) || |
1035 | !edid_verify_header(sd, segment)) { | |
5a544cce | 1036 | /* edid crc error, force reread of edid segment */ |
928b0fe7 | 1037 | v4l2_err(sd, "%s: edid crc or header error\n", __func__); |
5a544cce HV |
1038 | state->have_monitor = false; |
1039 | adv7511_s_power(sd, false); | |
1040 | adv7511_s_power(sd, true); | |
1041 | return false; | |
1042 | } | |
1043 | /* one more segment read ok */ | |
1044 | state->edid.segments = segment + 1; | |
1045 | if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) { | |
1046 | /* Request next EDID segment */ | |
1047 | v4l2_dbg(1, debug, sd, "%s: request segment %d\n", __func__, state->edid.segments); | |
1048 | adv7511_wr(sd, 0xc9, 0xf); | |
1049 | adv7511_wr(sd, 0xc4, state->edid.segments); | |
1050 | state->edid.read_retries = EDID_MAX_RETRIES; | |
1051 | queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY); | |
1052 | return false; | |
1053 | } | |
1054 | ||
1055 | v4l2_dbg(1, debug, sd, "%s: edid complete with %d segment(s)\n", __func__, state->edid.segments); | |
1056 | state->edid.complete = true; | |
1057 | ||
1058 | /* report when we have all segments | |
1059 | but report only for segment 0 | |
1060 | */ | |
1061 | ed.present = true; | |
1062 | ed.segment = 0; | |
1063 | state->edid_detect_counter++; | |
1064 | v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0); | |
1065 | v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed); | |
1066 | return ed.present; | |
1067 | } | |
1068 | ||
1069 | return false; | |
1070 | } | |
1071 | ||
1072 | /* ----------------------------------------------------------------------- */ | |
1073 | /* Setup ADV7511 */ | |
1074 | static void adv7511_init_setup(struct v4l2_subdev *sd) | |
1075 | { | |
1076 | struct adv7511_state *state = get_adv7511_state(sd); | |
1077 | struct adv7511_state_edid *edid = &state->edid; | |
1078 | ||
1079 | v4l2_dbg(1, debug, sd, "%s\n", __func__); | |
1080 | ||
1081 | /* clear all interrupts */ | |
1082 | adv7511_wr(sd, 0x96, 0xff); | |
a62c6216 MB |
1083 | /* |
1084 | * Stop HPD from resetting a lot of registers. | |
1085 | * It might leave the chip in a partly un-initialized state, | |
1086 | * in particular with regards to hotplug bounces. | |
1087 | */ | |
1088 | adv7511_wr_and_or(sd, 0xd6, 0x3f, 0xc0); | |
5a544cce HV |
1089 | memset(edid, 0, sizeof(struct adv7511_state_edid)); |
1090 | state->have_monitor = false; | |
1091 | adv7511_set_isr(sd, false); | |
1092 | adv7511_s_stream(sd, false); | |
1093 | adv7511_s_audio_stream(sd, false); | |
1094 | } | |
1095 | ||
1096 | static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
1097 | { | |
1098 | struct adv7511_state *state; | |
1099 | struct adv7511_platform_data *pdata = client->dev.platform_data; | |
1100 | struct v4l2_ctrl_handler *hdl; | |
1101 | struct v4l2_subdev *sd; | |
1102 | u8 chip_id[2]; | |
1103 | int err = -EIO; | |
1104 | ||
1105 | /* Check if the adapter supports the needed features */ | |
1106 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
1107 | return -EIO; | |
1108 | ||
1109 | state = devm_kzalloc(&client->dev, sizeof(struct adv7511_state), GFP_KERNEL); | |
1110 | if (!state) | |
1111 | return -ENOMEM; | |
1112 | ||
1113 | /* Platform data */ | |
1114 | if (!pdata) { | |
1115 | v4l_err(client, "No platform data!\n"); | |
1116 | return -ENODEV; | |
1117 | } | |
1118 | memcpy(&state->pdata, pdata, sizeof(state->pdata)); | |
1119 | ||
1120 | sd = &state->sd; | |
1121 | ||
1122 | v4l2_dbg(1, debug, sd, "detecting adv7511 client on address 0x%x\n", | |
1123 | client->addr << 1); | |
1124 | ||
1125 | v4l2_i2c_subdev_init(sd, client, &adv7511_ops); | |
1126 | ||
1127 | hdl = &state->hdl; | |
1128 | v4l2_ctrl_handler_init(hdl, 10); | |
1129 | /* add in ascending ID order */ | |
1130 | state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops, | |
1131 | V4L2_CID_DV_TX_MODE, V4L2_DV_TX_MODE_HDMI, | |
1132 | 0, V4L2_DV_TX_MODE_DVI_D); | |
1133 | state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL, | |
1134 | V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0); | |
1135 | state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL, | |
1136 | V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0); | |
1137 | state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL, | |
1138 | V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0); | |
1139 | state->rgb_quantization_range_ctrl = | |
1140 | v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops, | |
1141 | V4L2_CID_DV_TX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL, | |
1142 | 0, V4L2_DV_RGB_RANGE_AUTO); | |
1143 | sd->ctrl_handler = hdl; | |
1144 | if (hdl->error) { | |
1145 | err = hdl->error; | |
1146 | goto err_hdl; | |
1147 | } | |
1148 | state->hdmi_mode_ctrl->is_private = true; | |
1149 | state->hotplug_ctrl->is_private = true; | |
1150 | state->rx_sense_ctrl->is_private = true; | |
1151 | state->have_edid0_ctrl->is_private = true; | |
1152 | state->rgb_quantization_range_ctrl->is_private = true; | |
1153 | ||
1154 | state->pad.flags = MEDIA_PAD_FL_SINK; | |
1155 | err = media_entity_init(&sd->entity, 1, &state->pad, 0); | |
1156 | if (err) | |
1157 | goto err_hdl; | |
1158 | ||
1159 | /* EDID and CEC i2c addr */ | |
1160 | state->i2c_edid_addr = state->pdata.i2c_edid << 1; | |
1161 | state->i2c_cec_addr = state->pdata.i2c_cec << 1; | |
1162 | ||
1163 | state->chip_revision = adv7511_rd(sd, 0x0); | |
1164 | chip_id[0] = adv7511_rd(sd, 0xf5); | |
1165 | chip_id[1] = adv7511_rd(sd, 0xf6); | |
1166 | if (chip_id[0] != 0x75 || chip_id[1] != 0x11) { | |
1167 | v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0], chip_id[1]); | |
1168 | err = -EIO; | |
1169 | goto err_entity; | |
1170 | } | |
1171 | ||
1172 | state->i2c_edid = i2c_new_dummy(client->adapter, state->i2c_edid_addr >> 1); | |
1173 | if (state->i2c_edid == NULL) { | |
1174 | v4l2_err(sd, "failed to register edid i2c client\n"); | |
f527b17a | 1175 | err = -ENOMEM; |
5a544cce HV |
1176 | goto err_entity; |
1177 | } | |
1178 | ||
1179 | adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */ | |
1180 | state->work_queue = create_singlethread_workqueue(sd->name); | |
1181 | if (state->work_queue == NULL) { | |
1182 | v4l2_err(sd, "could not create workqueue\n"); | |
f527b17a | 1183 | err = -ENOMEM; |
5a544cce HV |
1184 | goto err_unreg_cec; |
1185 | } | |
1186 | ||
1187 | INIT_DELAYED_WORK(&state->edid_handler, adv7511_edid_handler); | |
1188 | ||
1189 | adv7511_init_setup(sd); | |
1190 | adv7511_set_isr(sd, true); | |
1191 | adv7511_check_monitor_present_status(sd); | |
1192 | ||
1193 | v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, | |
1194 | client->addr << 1, client->adapter->name); | |
1195 | return 0; | |
1196 | ||
1197 | err_unreg_cec: | |
1198 | i2c_unregister_device(state->i2c_edid); | |
1199 | err_entity: | |
1200 | media_entity_cleanup(&sd->entity); | |
1201 | err_hdl: | |
1202 | v4l2_ctrl_handler_free(&state->hdl); | |
1203 | return err; | |
1204 | } | |
1205 | ||
1206 | /* ----------------------------------------------------------------------- */ | |
1207 | ||
1208 | static int adv7511_remove(struct i2c_client *client) | |
1209 | { | |
1210 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
1211 | struct adv7511_state *state = get_adv7511_state(sd); | |
1212 | ||
1213 | state->chip_revision = -1; | |
1214 | ||
1215 | v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name, | |
1216 | client->addr << 1, client->adapter->name); | |
1217 | ||
1218 | adv7511_init_setup(sd); | |
1219 | cancel_delayed_work(&state->edid_handler); | |
1220 | i2c_unregister_device(state->i2c_edid); | |
1221 | destroy_workqueue(state->work_queue); | |
1222 | v4l2_device_unregister_subdev(sd); | |
1223 | media_entity_cleanup(&sd->entity); | |
1224 | v4l2_ctrl_handler_free(sd->ctrl_handler); | |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | /* ----------------------------------------------------------------------- */ | |
1229 | ||
1230 | static struct i2c_device_id adv7511_id[] = { | |
1231 | { "adv7511", 0 }, | |
1232 | { } | |
1233 | }; | |
1234 | MODULE_DEVICE_TABLE(i2c, adv7511_id); | |
1235 | ||
1236 | static struct i2c_driver adv7511_driver = { | |
1237 | .driver = { | |
1238 | .owner = THIS_MODULE, | |
1239 | .name = "adv7511", | |
1240 | }, | |
1241 | .probe = adv7511_probe, | |
1242 | .remove = adv7511_remove, | |
1243 | .id_table = adv7511_id, | |
1244 | }; | |
1245 | ||
1246 | module_i2c_driver(adv7511_driver); |