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117a55b6 HV |
1 | /* |
2 | * Analog Devices AD9389B/AD9889B video encoder driver | |
3 | * | |
4 | * Copyright 2012 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 | * References (c = chapter, p = page): | |
22 | * REF_01 - Analog Devices, Programming Guide, AD9889B/AD9389B, | |
23 | * HDMI Transitter, Rev. A, October 2010 | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/i2c.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/videodev2.h> | |
32 | #include <linux/workqueue.h> | |
33 | #include <linux/v4l2-dv-timings.h> | |
34 | #include <media/v4l2-device.h> | |
117a55b6 | 35 | #include <media/v4l2-common.h> |
25764158 | 36 | #include <media/v4l2-dv-timings.h> |
117a55b6 HV |
37 | #include <media/v4l2-ctrls.h> |
38 | #include <media/ad9389b.h> | |
39 | ||
40 | static int debug; | |
41 | module_param(debug, int, 0644); | |
42 | MODULE_PARM_DESC(debug, "debug level (0-2)"); | |
43 | ||
44 | MODULE_DESCRIPTION("Analog Devices AD9389B/AD9889B video encoder driver"); | |
45 | MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>"); | |
46 | MODULE_AUTHOR("Martin Bugge <marbugge@cisco.com>"); | |
47 | MODULE_LICENSE("GPL"); | |
48 | ||
49 | #define MASK_AD9389B_EDID_RDY_INT 0x04 | |
50 | #define MASK_AD9389B_MSEN_INT 0x40 | |
51 | #define MASK_AD9389B_HPD_INT 0x80 | |
52 | ||
53 | #define MASK_AD9389B_HPD_DETECT 0x40 | |
54 | #define MASK_AD9389B_MSEN_DETECT 0x20 | |
55 | #define MASK_AD9389B_EDID_RDY 0x10 | |
56 | ||
57 | #define EDID_MAX_RETRIES (8) | |
58 | #define EDID_DELAY 250 | |
59 | #define EDID_MAX_SEGM 8 | |
60 | ||
61 | /* | |
62 | ********************************************************************** | |
63 | * | |
64 | * Arrays with configuration parameters for the AD9389B | |
65 | * | |
66 | ********************************************************************** | |
67 | */ | |
68 | ||
69 | struct i2c_reg_value { | |
70 | u8 reg; | |
71 | u8 value; | |
72 | }; | |
73 | ||
74 | struct ad9389b_state_edid { | |
75 | /* total number of blocks */ | |
76 | u32 blocks; | |
77 | /* Number of segments read */ | |
78 | u32 segments; | |
79 | u8 data[EDID_MAX_SEGM * 256]; | |
80 | /* Number of EDID read retries left */ | |
81 | unsigned read_retries; | |
82 | }; | |
83 | ||
84 | struct ad9389b_state { | |
85 | struct ad9389b_platform_data pdata; | |
86 | struct v4l2_subdev sd; | |
87 | struct media_pad pad; | |
88 | struct v4l2_ctrl_handler hdl; | |
89 | int chip_revision; | |
90 | /* Is the ad9389b powered on? */ | |
91 | bool power_on; | |
92 | /* Did we receive hotplug and rx-sense signals? */ | |
93 | bool have_monitor; | |
94 | /* timings from s_dv_timings */ | |
95 | struct v4l2_dv_timings dv_timings; | |
96 | /* controls */ | |
97 | struct v4l2_ctrl *hdmi_mode_ctrl; | |
98 | struct v4l2_ctrl *hotplug_ctrl; | |
99 | struct v4l2_ctrl *rx_sense_ctrl; | |
100 | struct v4l2_ctrl *have_edid0_ctrl; | |
101 | struct v4l2_ctrl *rgb_quantization_range_ctrl; | |
102 | struct i2c_client *edid_i2c_client; | |
103 | struct ad9389b_state_edid edid; | |
104 | /* Running counter of the number of detected EDIDs (for debugging) */ | |
105 | unsigned edid_detect_counter; | |
106 | struct workqueue_struct *work_queue; | |
107 | struct delayed_work edid_handler; /* work entry */ | |
108 | }; | |
109 | ||
110 | static void ad9389b_check_monitor_present_status(struct v4l2_subdev *sd); | |
111 | static bool ad9389b_check_edid_status(struct v4l2_subdev *sd); | |
112 | static void ad9389b_setup(struct v4l2_subdev *sd); | |
113 | static int ad9389b_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq); | |
114 | static int ad9389b_s_clock_freq(struct v4l2_subdev *sd, u32 freq); | |
115 | ||
116 | static inline struct ad9389b_state *get_ad9389b_state(struct v4l2_subdev *sd) | |
117 | { | |
118 | return container_of(sd, struct ad9389b_state, sd); | |
119 | } | |
120 | ||
121 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
122 | { | |
123 | return &container_of(ctrl->handler, struct ad9389b_state, hdl)->sd; | |
124 | } | |
125 | ||
126 | /* ------------------------ I2C ----------------------------------------------- */ | |
127 | ||
128 | static int ad9389b_rd(struct v4l2_subdev *sd, u8 reg) | |
129 | { | |
130 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
131 | ||
132 | return i2c_smbus_read_byte_data(client, reg); | |
133 | } | |
134 | ||
135 | static int ad9389b_wr(struct v4l2_subdev *sd, u8 reg, u8 val) | |
136 | { | |
137 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
138 | int ret; | |
139 | int i; | |
140 | ||
141 | for (i = 0; i < 3; i++) { | |
142 | ret = i2c_smbus_write_byte_data(client, reg, val); | |
143 | if (ret == 0) | |
144 | return 0; | |
145 | } | |
146 | v4l2_err(sd, "I2C Write Problem\n"); | |
147 | return ret; | |
148 | } | |
149 | ||
150 | /* To set specific bits in the register, a clear-mask is given (to be AND-ed), | |
151 | and then the value-mask (to be OR-ed). */ | |
152 | static inline void ad9389b_wr_and_or(struct v4l2_subdev *sd, u8 reg, | |
d3ec7de4 | 153 | u8 clr_mask, u8 val_mask) |
117a55b6 HV |
154 | { |
155 | ad9389b_wr(sd, reg, (ad9389b_rd(sd, reg) & clr_mask) | val_mask); | |
156 | } | |
157 | ||
158 | static void ad9389b_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf) | |
159 | { | |
160 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
161 | int i; | |
162 | ||
163 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
164 | ||
165 | for (i = 0; i < len; i++) | |
166 | buf[i] = i2c_smbus_read_byte_data(state->edid_i2c_client, i); | |
167 | } | |
168 | ||
169 | static inline bool ad9389b_have_hotplug(struct v4l2_subdev *sd) | |
170 | { | |
171 | return ad9389b_rd(sd, 0x42) & MASK_AD9389B_HPD_DETECT; | |
172 | } | |
173 | ||
174 | static inline bool ad9389b_have_rx_sense(struct v4l2_subdev *sd) | |
175 | { | |
176 | return ad9389b_rd(sd, 0x42) & MASK_AD9389B_MSEN_DETECT; | |
177 | } | |
178 | ||
179 | static void ad9389b_csc_conversion_mode(struct v4l2_subdev *sd, u8 mode) | |
180 | { | |
181 | ad9389b_wr_and_or(sd, 0x17, 0xe7, (mode & 0x3)<<3); | |
182 | ad9389b_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5); | |
183 | } | |
184 | ||
185 | static void ad9389b_csc_coeff(struct v4l2_subdev *sd, | |
186 | u16 A1, u16 A2, u16 A3, u16 A4, | |
187 | u16 B1, u16 B2, u16 B3, u16 B4, | |
188 | u16 C1, u16 C2, u16 C3, u16 C4) | |
189 | { | |
190 | /* A */ | |
191 | ad9389b_wr_and_or(sd, 0x18, 0xe0, A1>>8); | |
192 | ad9389b_wr(sd, 0x19, A1); | |
193 | ad9389b_wr_and_or(sd, 0x1A, 0xe0, A2>>8); | |
194 | ad9389b_wr(sd, 0x1B, A2); | |
195 | ad9389b_wr_and_or(sd, 0x1c, 0xe0, A3>>8); | |
196 | ad9389b_wr(sd, 0x1d, A3); | |
197 | ad9389b_wr_and_or(sd, 0x1e, 0xe0, A4>>8); | |
198 | ad9389b_wr(sd, 0x1f, A4); | |
199 | ||
200 | /* B */ | |
201 | ad9389b_wr_and_or(sd, 0x20, 0xe0, B1>>8); | |
202 | ad9389b_wr(sd, 0x21, B1); | |
203 | ad9389b_wr_and_or(sd, 0x22, 0xe0, B2>>8); | |
204 | ad9389b_wr(sd, 0x23, B2); | |
205 | ad9389b_wr_and_or(sd, 0x24, 0xe0, B3>>8); | |
206 | ad9389b_wr(sd, 0x25, B3); | |
207 | ad9389b_wr_and_or(sd, 0x26, 0xe0, B4>>8); | |
208 | ad9389b_wr(sd, 0x27, B4); | |
209 | ||
210 | /* C */ | |
211 | ad9389b_wr_and_or(sd, 0x28, 0xe0, C1>>8); | |
212 | ad9389b_wr(sd, 0x29, C1); | |
213 | ad9389b_wr_and_or(sd, 0x2A, 0xe0, C2>>8); | |
214 | ad9389b_wr(sd, 0x2B, C2); | |
215 | ad9389b_wr_and_or(sd, 0x2C, 0xe0, C3>>8); | |
216 | ad9389b_wr(sd, 0x2D, C3); | |
217 | ad9389b_wr_and_or(sd, 0x2E, 0xe0, C4>>8); | |
218 | ad9389b_wr(sd, 0x2F, C4); | |
219 | } | |
220 | ||
221 | static void ad9389b_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable) | |
222 | { | |
223 | if (enable) { | |
224 | u8 csc_mode = 0; | |
225 | ||
226 | ad9389b_csc_conversion_mode(sd, csc_mode); | |
227 | ad9389b_csc_coeff(sd, | |
228 | 4096-564, 0, 0, 256, | |
229 | 0, 4096-564, 0, 256, | |
230 | 0, 0, 4096-564, 256); | |
231 | /* enable CSC */ | |
232 | ad9389b_wr_and_or(sd, 0x3b, 0xfe, 0x1); | |
233 | /* AVI infoframe: Limited range RGB (16-235) */ | |
234 | ad9389b_wr_and_or(sd, 0xcd, 0xf9, 0x02); | |
235 | } else { | |
236 | /* disable CSC */ | |
237 | ad9389b_wr_and_or(sd, 0x3b, 0xfe, 0x0); | |
238 | /* AVI infoframe: Full range RGB (0-255) */ | |
239 | ad9389b_wr_and_or(sd, 0xcd, 0xf9, 0x04); | |
240 | } | |
241 | } | |
242 | ||
243 | static void ad9389b_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd) | |
244 | { | |
245 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
246 | ||
247 | if (state->dv_timings.bt.standards & V4L2_DV_BT_STD_CEA861) { | |
248 | /* CEA format, not IT */ | |
249 | ad9389b_wr_and_or(sd, 0xcd, 0xbf, 0x00); | |
250 | } else { | |
251 | /* IT format */ | |
252 | ad9389b_wr_and_or(sd, 0xcd, 0xbf, 0x40); | |
253 | } | |
254 | } | |
255 | ||
256 | static int ad9389b_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl) | |
257 | { | |
258 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
259 | ||
260 | switch (ctrl->val) { | |
261 | case V4L2_DV_RGB_RANGE_AUTO: | |
262 | /* automatic */ | |
263 | if (state->dv_timings.bt.standards & V4L2_DV_BT_STD_CEA861) { | |
264 | /* cea format, RGB limited range (16-235) */ | |
265 | ad9389b_csc_rgb_full2limit(sd, true); | |
266 | } else { | |
267 | /* not cea format, RGB full range (0-255) */ | |
268 | ad9389b_csc_rgb_full2limit(sd, false); | |
269 | } | |
270 | break; | |
271 | case V4L2_DV_RGB_RANGE_LIMITED: | |
272 | /* RGB limited range (16-235) */ | |
273 | ad9389b_csc_rgb_full2limit(sd, true); | |
274 | break; | |
275 | case V4L2_DV_RGB_RANGE_FULL: | |
276 | /* RGB full range (0-255) */ | |
277 | ad9389b_csc_rgb_full2limit(sd, false); | |
278 | break; | |
279 | default: | |
280 | return -EINVAL; | |
281 | } | |
282 | return 0; | |
283 | } | |
284 | ||
285 | static void ad9389b_set_manual_pll_gear(struct v4l2_subdev *sd, u32 pixelclock) | |
286 | { | |
287 | u8 gear; | |
288 | ||
289 | /* Workaround for TMDS PLL problem | |
290 | * The TMDS PLL in AD9389b change gear when the chip is heated above a | |
291 | * certain temperature. The output is disabled when the PLL change gear | |
292 | * so the monitor has to lock on the signal again. A workaround for | |
293 | * this is to use the manual PLL gears. This is a solution from Analog | |
294 | * Devices that is not documented in the datasheets. | |
295 | * 0x98 [7] = enable manual gearing. 0x98 [6:4] = gear | |
296 | * | |
297 | * The pixel frequency ranges are based on readout of the gear the | |
298 | * automatic gearing selects for different pixel clocks | |
299 | * (read from 0x9e [3:1]). | |
300 | */ | |
301 | ||
302 | if (pixelclock > 140000000) | |
303 | gear = 0xc0; /* 4th gear */ | |
304 | else if (pixelclock > 117000000) | |
305 | gear = 0xb0; /* 3rd gear */ | |
306 | else if (pixelclock > 87000000) | |
307 | gear = 0xa0; /* 2nd gear */ | |
308 | else if (pixelclock > 60000000) | |
309 | gear = 0x90; /* 1st gear */ | |
310 | else | |
311 | gear = 0x80; /* 0th gear */ | |
312 | ||
313 | ad9389b_wr_and_or(sd, 0x98, 0x0f, gear); | |
314 | } | |
315 | ||
316 | /* ------------------------------ CTRL OPS ------------------------------ */ | |
317 | ||
318 | static int ad9389b_s_ctrl(struct v4l2_ctrl *ctrl) | |
319 | { | |
320 | struct v4l2_subdev *sd = to_sd(ctrl); | |
321 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
322 | ||
323 | v4l2_dbg(1, debug, sd, | |
d3ec7de4 | 324 | "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val); |
117a55b6 HV |
325 | |
326 | if (state->hdmi_mode_ctrl == ctrl) { | |
327 | /* Set HDMI or DVI-D */ | |
328 | ad9389b_wr_and_or(sd, 0xaf, 0xfd, | |
d3ec7de4 | 329 | ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00); |
117a55b6 HV |
330 | return 0; |
331 | } | |
332 | if (state->rgb_quantization_range_ctrl == ctrl) | |
333 | return ad9389b_set_rgb_quantization_mode(sd, ctrl); | |
334 | return -EINVAL; | |
335 | } | |
336 | ||
337 | static const struct v4l2_ctrl_ops ad9389b_ctrl_ops = { | |
338 | .s_ctrl = ad9389b_s_ctrl, | |
339 | }; | |
340 | ||
341 | /* ---------------------------- CORE OPS ------------------------------------------- */ | |
342 | ||
343 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
344 | static int ad9389b_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) | |
345 | { | |
117a55b6 HV |
346 | reg->val = ad9389b_rd(sd, reg->reg & 0xff); |
347 | reg->size = 1; | |
348 | return 0; | |
349 | } | |
350 | ||
977ba3b1 | 351 | static int ad9389b_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) |
117a55b6 | 352 | { |
117a55b6 HV |
353 | ad9389b_wr(sd, reg->reg & 0xff, reg->val & 0xff); |
354 | return 0; | |
355 | } | |
356 | #endif | |
357 | ||
117a55b6 HV |
358 | static int ad9389b_log_status(struct v4l2_subdev *sd) |
359 | { | |
360 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
361 | struct ad9389b_state_edid *edid = &state->edid; | |
362 | ||
363 | static const char * const states[] = { | |
364 | "in reset", | |
365 | "reading EDID", | |
366 | "idle", | |
367 | "initializing HDCP", | |
368 | "HDCP enabled", | |
369 | "initializing HDCP repeater", | |
370 | "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" | |
371 | }; | |
372 | static const char * const errors[] = { | |
373 | "no error", | |
374 | "bad receiver BKSV", | |
375 | "Ri mismatch", | |
376 | "Pj mismatch", | |
377 | "i2c error", | |
378 | "timed out", | |
379 | "max repeater cascade exceeded", | |
380 | "hash check failed", | |
381 | "too many devices", | |
382 | "9", "A", "B", "C", "D", "E", "F" | |
383 | }; | |
384 | ||
385 | u8 manual_gear; | |
386 | ||
387 | v4l2_info(sd, "chip revision %d\n", state->chip_revision); | |
388 | v4l2_info(sd, "power %s\n", state->power_on ? "on" : "off"); | |
389 | v4l2_info(sd, "%s hotplug, %s Rx Sense, %s EDID (%d block(s))\n", | |
d3ec7de4 MB |
390 | (ad9389b_rd(sd, 0x42) & MASK_AD9389B_HPD_DETECT) ? |
391 | "detected" : "no", | |
392 | (ad9389b_rd(sd, 0x42) & MASK_AD9389B_MSEN_DETECT) ? | |
393 | "detected" : "no", | |
394 | edid->segments ? "found" : "no", edid->blocks); | |
117a55b6 HV |
395 | if (state->have_monitor) { |
396 | v4l2_info(sd, "%s output %s\n", | |
d3ec7de4 MB |
397 | (ad9389b_rd(sd, 0xaf) & 0x02) ? |
398 | "HDMI" : "DVI-D", | |
399 | (ad9389b_rd(sd, 0xa1) & 0x3c) ? | |
400 | "disabled" : "enabled"); | |
117a55b6 HV |
401 | } |
402 | v4l2_info(sd, "ad9389b: %s\n", (ad9389b_rd(sd, 0xb8) & 0x40) ? | |
d3ec7de4 | 403 | "encrypted" : "no encryption"); |
117a55b6 | 404 | v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n", |
d3ec7de4 MB |
405 | states[ad9389b_rd(sd, 0xc8) & 0xf], |
406 | errors[ad9389b_rd(sd, 0xc8) >> 4], | |
407 | state->edid_detect_counter, | |
408 | ad9389b_rd(sd, 0x94), ad9389b_rd(sd, 0x96)); | |
117a55b6 HV |
409 | manual_gear = ad9389b_rd(sd, 0x98) & 0x80; |
410 | v4l2_info(sd, "ad9389b: RGB quantization: %s range\n", | |
d3ec7de4 | 411 | ad9389b_rd(sd, 0x3b) & 0x01 ? "limited" : "full"); |
117a55b6 HV |
412 | v4l2_info(sd, "ad9389b: %s gear %d\n", |
413 | manual_gear ? "manual" : "automatic", | |
414 | manual_gear ? ((ad9389b_rd(sd, 0x98) & 0x70) >> 4) : | |
d3ec7de4 | 415 | ((ad9389b_rd(sd, 0x9e) & 0x0e) >> 1)); |
117a55b6 HV |
416 | if (state->have_monitor) { |
417 | if (ad9389b_rd(sd, 0xaf) & 0x02) { | |
418 | /* HDMI only */ | |
419 | u8 manual_cts = ad9389b_rd(sd, 0x0a) & 0x80; | |
420 | u32 N = (ad9389b_rd(sd, 0x01) & 0xf) << 16 | | |
d3ec7de4 MB |
421 | ad9389b_rd(sd, 0x02) << 8 | |
422 | ad9389b_rd(sd, 0x03); | |
117a55b6 HV |
423 | u8 vic_detect = ad9389b_rd(sd, 0x3e) >> 2; |
424 | u8 vic_sent = ad9389b_rd(sd, 0x3d) & 0x3f; | |
425 | u32 CTS; | |
426 | ||
427 | if (manual_cts) | |
428 | CTS = (ad9389b_rd(sd, 0x07) & 0xf) << 16 | | |
d3ec7de4 MB |
429 | ad9389b_rd(sd, 0x08) << 8 | |
430 | ad9389b_rd(sd, 0x09); | |
117a55b6 HV |
431 | else |
432 | CTS = (ad9389b_rd(sd, 0x04) & 0xf) << 16 | | |
d3ec7de4 MB |
433 | ad9389b_rd(sd, 0x05) << 8 | |
434 | ad9389b_rd(sd, 0x06); | |
117a55b6 | 435 | N = (ad9389b_rd(sd, 0x01) & 0xf) << 16 | |
d3ec7de4 MB |
436 | ad9389b_rd(sd, 0x02) << 8 | |
437 | ad9389b_rd(sd, 0x03); | |
117a55b6 HV |
438 | |
439 | v4l2_info(sd, "ad9389b: CTS %s mode: N %d, CTS %d\n", | |
d3ec7de4 | 440 | manual_cts ? "manual" : "automatic", N, CTS); |
117a55b6 HV |
441 | |
442 | v4l2_info(sd, "ad9389b: VIC: detected %d, sent %d\n", | |
d3ec7de4 | 443 | vic_detect, vic_sent); |
117a55b6 HV |
444 | } |
445 | } | |
11d034c8 HV |
446 | if (state->dv_timings.type == V4L2_DV_BT_656_1120) |
447 | v4l2_print_dv_timings(sd->name, "timings: ", | |
448 | &state->dv_timings, false); | |
449 | else | |
117a55b6 | 450 | v4l2_info(sd, "no timings set\n"); |
117a55b6 HV |
451 | return 0; |
452 | } | |
453 | ||
454 | /* Power up/down ad9389b */ | |
455 | static int ad9389b_s_power(struct v4l2_subdev *sd, int on) | |
456 | { | |
457 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
458 | struct ad9389b_platform_data *pdata = &state->pdata; | |
459 | const int retries = 20; | |
460 | int i; | |
461 | ||
462 | v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off"); | |
463 | ||
464 | state->power_on = on; | |
465 | ||
466 | if (!on) { | |
467 | /* Power down */ | |
468 | ad9389b_wr_and_or(sd, 0x41, 0xbf, 0x40); | |
469 | return true; | |
470 | } | |
471 | ||
472 | /* Power up */ | |
473 | /* The ad9389b does not always come up immediately. | |
474 | Retry multiple times. */ | |
475 | for (i = 0; i < retries; i++) { | |
476 | ad9389b_wr_and_or(sd, 0x41, 0xbf, 0x0); | |
477 | if ((ad9389b_rd(sd, 0x41) & 0x40) == 0) | |
478 | break; | |
479 | ad9389b_wr_and_or(sd, 0x41, 0xbf, 0x40); | |
480 | msleep(10); | |
481 | } | |
482 | if (i == retries) { | |
483 | v4l2_dbg(1, debug, sd, "failed to powerup the ad9389b\n"); | |
484 | ad9389b_s_power(sd, 0); | |
485 | return false; | |
486 | } | |
487 | if (i > 1) | |
488 | v4l2_dbg(1, debug, sd, | |
d3ec7de4 | 489 | "needed %d retries to powerup the ad9389b\n", i); |
117a55b6 HV |
490 | |
491 | /* Select chip: AD9389B */ | |
492 | ad9389b_wr_and_or(sd, 0xba, 0xef, 0x10); | |
493 | ||
494 | /* Reserved registers that must be set according to REF_01 p. 11*/ | |
495 | ad9389b_wr_and_or(sd, 0x98, 0xf0, 0x07); | |
496 | ad9389b_wr(sd, 0x9c, 0x38); | |
497 | ad9389b_wr_and_or(sd, 0x9d, 0xfc, 0x01); | |
498 | ||
499 | /* Differential output drive strength */ | |
500 | if (pdata->diff_data_drive_strength > 0) | |
501 | ad9389b_wr(sd, 0xa2, pdata->diff_data_drive_strength); | |
502 | else | |
503 | ad9389b_wr(sd, 0xa2, 0x87); | |
504 | ||
505 | if (pdata->diff_clk_drive_strength > 0) | |
506 | ad9389b_wr(sd, 0xa3, pdata->diff_clk_drive_strength); | |
507 | else | |
508 | ad9389b_wr(sd, 0xa3, 0x87); | |
509 | ||
510 | ad9389b_wr(sd, 0x0a, 0x01); | |
511 | ad9389b_wr(sd, 0xbb, 0xff); | |
512 | ||
513 | /* Set number of attempts to read the EDID */ | |
514 | ad9389b_wr(sd, 0xc9, 0xf); | |
515 | return true; | |
516 | } | |
517 | ||
518 | /* Enable interrupts */ | |
519 | static void ad9389b_set_isr(struct v4l2_subdev *sd, bool enable) | |
520 | { | |
521 | u8 irqs = MASK_AD9389B_HPD_INT | MASK_AD9389B_MSEN_INT; | |
522 | u8 irqs_rd; | |
523 | int retries = 100; | |
524 | ||
525 | /* The datasheet says that the EDID ready interrupt should be | |
526 | disabled if there is no hotplug. */ | |
527 | if (!enable) | |
528 | irqs = 0; | |
529 | else if (ad9389b_have_hotplug(sd)) | |
530 | irqs |= MASK_AD9389B_EDID_RDY_INT; | |
531 | ||
532 | /* | |
533 | * This i2c write can fail (approx. 1 in 1000 writes). But it | |
534 | * is essential that this register is correct, so retry it | |
535 | * multiple times. | |
536 | * | |
537 | * Note that the i2c write does not report an error, but the readback | |
538 | * clearly shows the wrong value. | |
539 | */ | |
540 | do { | |
541 | ad9389b_wr(sd, 0x94, irqs); | |
542 | irqs_rd = ad9389b_rd(sd, 0x94); | |
543 | } while (retries-- && irqs_rd != irqs); | |
544 | ||
545 | if (irqs_rd != irqs) | |
546 | v4l2_err(sd, "Could not set interrupts: hw failure?\n"); | |
547 | } | |
548 | ||
549 | /* Interrupt handler */ | |
550 | static int ad9389b_isr(struct v4l2_subdev *sd, u32 status, bool *handled) | |
551 | { | |
552 | u8 irq_status; | |
553 | ||
554 | /* disable interrupts to prevent a race condition */ | |
555 | ad9389b_set_isr(sd, false); | |
556 | irq_status = ad9389b_rd(sd, 0x96); | |
557 | /* clear detected interrupts */ | |
558 | ad9389b_wr(sd, 0x96, irq_status); | |
559 | ||
560 | if (irq_status & (MASK_AD9389B_HPD_INT | MASK_AD9389B_MSEN_INT)) | |
561 | ad9389b_check_monitor_present_status(sd); | |
562 | if (irq_status & MASK_AD9389B_EDID_RDY_INT) | |
563 | ad9389b_check_edid_status(sd); | |
564 | ||
565 | /* enable interrupts */ | |
566 | ad9389b_set_isr(sd, true); | |
567 | *handled = true; | |
568 | return 0; | |
569 | } | |
570 | ||
571 | static const struct v4l2_subdev_core_ops ad9389b_core_ops = { | |
572 | .log_status = ad9389b_log_status, | |
117a55b6 HV |
573 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
574 | .g_register = ad9389b_g_register, | |
575 | .s_register = ad9389b_s_register, | |
576 | #endif | |
577 | .s_power = ad9389b_s_power, | |
578 | .interrupt_service_routine = ad9389b_isr, | |
579 | }; | |
580 | ||
581 | /* ------------------------------ PAD OPS ------------------------------ */ | |
582 | ||
583 | static int ad9389b_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) | |
584 | { | |
585 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
586 | ||
587 | if (edid->pad != 0) | |
588 | return -EINVAL; | |
589 | if (edid->blocks == 0 || edid->blocks > 256) | |
590 | return -EINVAL; | |
591 | if (!edid->edid) | |
592 | return -EINVAL; | |
593 | if (!state->edid.segments) { | |
594 | v4l2_dbg(1, debug, sd, "EDID segment 0 not found\n"); | |
595 | return -ENODATA; | |
596 | } | |
597 | if (edid->start_block >= state->edid.segments * 2) | |
598 | return -E2BIG; | |
599 | if (edid->blocks + edid->start_block >= state->edid.segments * 2) | |
600 | edid->blocks = state->edid.segments * 2 - edid->start_block; | |
601 | memcpy(edid->edid, &state->edid.data[edid->start_block * 128], | |
d3ec7de4 | 602 | 128 * edid->blocks); |
117a55b6 HV |
603 | return 0; |
604 | } | |
605 | ||
606 | static const struct v4l2_subdev_pad_ops ad9389b_pad_ops = { | |
607 | .get_edid = ad9389b_get_edid, | |
608 | }; | |
609 | ||
610 | /* ------------------------------ VIDEO OPS ------------------------------ */ | |
611 | ||
612 | /* Enable/disable ad9389b output */ | |
613 | static int ad9389b_s_stream(struct v4l2_subdev *sd, int enable) | |
614 | { | |
615 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
616 | ||
617 | v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis")); | |
618 | ||
619 | ad9389b_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c)); | |
620 | if (enable) { | |
621 | ad9389b_check_monitor_present_status(sd); | |
622 | } else { | |
623 | ad9389b_s_power(sd, 0); | |
624 | state->have_monitor = false; | |
625 | } | |
626 | return 0; | |
627 | } | |
628 | ||
04164904 HV |
629 | static const struct v4l2_dv_timings_cap ad9389b_timings_cap = { |
630 | .type = V4L2_DV_BT_656_1120, | |
8f110d68 GG |
631 | /* keep this initialization for compatibility with GCC < 4.4.6 */ |
632 | .reserved = { 0 }, | |
633 | V4L2_INIT_BT_TIMINGS(0, 1920, 0, 1200, 25000000, 170000000, | |
634 | V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | | |
04164904 | 635 | V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, |
8f110d68 GG |
636 | V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING | |
637 | V4L2_DV_BT_CAP_CUSTOM) | |
117a55b6 HV |
638 | }; |
639 | ||
640 | static int ad9389b_s_dv_timings(struct v4l2_subdev *sd, | |
641 | struct v4l2_dv_timings *timings) | |
642 | { | |
643 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
117a55b6 HV |
644 | |
645 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
646 | ||
647 | /* quick sanity check */ | |
b8f0fff4 | 648 | if (!v4l2_valid_dv_timings(timings, &ad9389b_timings_cap, NULL, NULL)) |
117a55b6 HV |
649 | return -EINVAL; |
650 | ||
651 | /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings | |
04164904 | 652 | if the format is one of the CEA or DMT timings. */ |
b8f0fff4 | 653 | v4l2_find_dv_timings_cap(timings, &ad9389b_timings_cap, 0, NULL, NULL); |
117a55b6 HV |
654 | |
655 | timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS; | |
656 | ||
657 | /* save timings */ | |
658 | state->dv_timings = *timings; | |
659 | ||
660 | /* update quantization range based on new dv_timings */ | |
661 | ad9389b_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl); | |
662 | ||
663 | /* update PLL gear based on new dv_timings */ | |
664 | if (state->pdata.tmds_pll_gear == AD9389B_TMDS_PLL_GEAR_SEMI_AUTOMATIC) | |
665 | ad9389b_set_manual_pll_gear(sd, (u32)timings->bt.pixelclock); | |
666 | ||
667 | /* update AVI infoframe */ | |
668 | ad9389b_set_IT_content_AVI_InfoFrame(sd); | |
669 | ||
670 | return 0; | |
671 | } | |
672 | ||
673 | static int ad9389b_g_dv_timings(struct v4l2_subdev *sd, | |
674 | struct v4l2_dv_timings *timings) | |
675 | { | |
676 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
677 | ||
678 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
679 | ||
680 | if (!timings) | |
681 | return -EINVAL; | |
682 | ||
683 | *timings = state->dv_timings; | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | static int ad9389b_enum_dv_timings(struct v4l2_subdev *sd, | |
d3ec7de4 | 689 | struct v4l2_enum_dv_timings *timings) |
117a55b6 | 690 | { |
b8f0fff4 HV |
691 | return v4l2_enum_dv_timings_cap(timings, &ad9389b_timings_cap, |
692 | NULL, NULL); | |
117a55b6 HV |
693 | } |
694 | ||
695 | static int ad9389b_dv_timings_cap(struct v4l2_subdev *sd, | |
d3ec7de4 | 696 | struct v4l2_dv_timings_cap *cap) |
117a55b6 | 697 | { |
04164904 | 698 | *cap = ad9389b_timings_cap; |
117a55b6 HV |
699 | return 0; |
700 | } | |
701 | ||
702 | static const struct v4l2_subdev_video_ops ad9389b_video_ops = { | |
703 | .s_stream = ad9389b_s_stream, | |
704 | .s_dv_timings = ad9389b_s_dv_timings, | |
705 | .g_dv_timings = ad9389b_g_dv_timings, | |
706 | .enum_dv_timings = ad9389b_enum_dv_timings, | |
707 | .dv_timings_cap = ad9389b_dv_timings_cap, | |
708 | }; | |
709 | ||
710 | static int ad9389b_s_audio_stream(struct v4l2_subdev *sd, int enable) | |
711 | { | |
712 | v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis")); | |
713 | ||
714 | if (enable) | |
715 | ad9389b_wr_and_or(sd, 0x45, 0x3f, 0x80); | |
716 | else | |
717 | ad9389b_wr_and_or(sd, 0x45, 0x3f, 0x40); | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | static int ad9389b_s_clock_freq(struct v4l2_subdev *sd, u32 freq) | |
723 | { | |
724 | u32 N; | |
725 | ||
726 | switch (freq) { | |
d3ec7de4 MB |
727 | case 32000: N = 4096; break; |
728 | case 44100: N = 6272; break; | |
729 | case 48000: N = 6144; break; | |
730 | case 88200: N = 12544; break; | |
731 | case 96000: N = 12288; break; | |
117a55b6 HV |
732 | case 176400: N = 25088; break; |
733 | case 192000: N = 24576; break; | |
734 | default: | |
d3ec7de4 | 735 | return -EINVAL; |
117a55b6 HV |
736 | } |
737 | ||
738 | /* Set N (used with CTS to regenerate the audio clock) */ | |
739 | ad9389b_wr(sd, 0x01, (N >> 16) & 0xf); | |
740 | ad9389b_wr(sd, 0x02, (N >> 8) & 0xff); | |
741 | ad9389b_wr(sd, 0x03, N & 0xff); | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | static int ad9389b_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq) | |
747 | { | |
748 | u32 i2s_sf; | |
749 | ||
750 | switch (freq) { | |
d3ec7de4 MB |
751 | case 32000: i2s_sf = 0x30; break; |
752 | case 44100: i2s_sf = 0x00; break; | |
753 | case 48000: i2s_sf = 0x20; break; | |
754 | case 88200: i2s_sf = 0x80; break; | |
755 | case 96000: i2s_sf = 0xa0; break; | |
117a55b6 HV |
756 | case 176400: i2s_sf = 0xc0; break; |
757 | case 192000: i2s_sf = 0xe0; break; | |
758 | default: | |
d3ec7de4 | 759 | return -EINVAL; |
117a55b6 HV |
760 | } |
761 | ||
762 | /* Set sampling frequency for I2S audio to 48 kHz */ | |
763 | ad9389b_wr_and_or(sd, 0x15, 0xf, i2s_sf); | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
768 | static int ad9389b_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) | |
769 | { | |
770 | /* TODO based on input/output/config */ | |
771 | /* TODO See datasheet "Programmers guide" p. 39-40 */ | |
772 | ||
773 | /* Only 2 channels in use for application */ | |
774 | ad9389b_wr_and_or(sd, 0x50, 0x1f, 0x20); | |
775 | /* Speaker mapping */ | |
776 | ad9389b_wr(sd, 0x51, 0x00); | |
777 | ||
778 | /* TODO Where should this be placed? */ | |
779 | /* 16 bit audio word length */ | |
780 | ad9389b_wr_and_or(sd, 0x14, 0xf0, 0x02); | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | static const struct v4l2_subdev_audio_ops ad9389b_audio_ops = { | |
786 | .s_stream = ad9389b_s_audio_stream, | |
787 | .s_clock_freq = ad9389b_s_clock_freq, | |
788 | .s_i2s_clock_freq = ad9389b_s_i2s_clock_freq, | |
789 | .s_routing = ad9389b_s_routing, | |
790 | }; | |
791 | ||
792 | /* --------------------- SUBDEV OPS --------------------------------------- */ | |
793 | ||
794 | static const struct v4l2_subdev_ops ad9389b_ops = { | |
795 | .core = &ad9389b_core_ops, | |
796 | .video = &ad9389b_video_ops, | |
797 | .audio = &ad9389b_audio_ops, | |
798 | .pad = &ad9389b_pad_ops, | |
799 | }; | |
800 | ||
801 | /* ----------------------------------------------------------------------- */ | |
802 | static void ad9389b_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, | |
d3ec7de4 | 803 | int segment, u8 *buf) |
117a55b6 HV |
804 | { |
805 | int i, j; | |
806 | ||
807 | if (debug < lvl) | |
808 | return; | |
809 | ||
810 | v4l2_dbg(lvl, debug, sd, "edid segment %d\n", segment); | |
811 | for (i = 0; i < 256; i += 16) { | |
812 | u8 b[128]; | |
813 | u8 *bp = b; | |
814 | ||
815 | if (i == 128) | |
816 | v4l2_dbg(lvl, debug, sd, "\n"); | |
817 | for (j = i; j < i + 16; j++) { | |
818 | sprintf(bp, "0x%02x, ", buf[j]); | |
819 | bp += 6; | |
820 | } | |
821 | bp[0] = '\0'; | |
822 | v4l2_dbg(lvl, debug, sd, "%s\n", b); | |
823 | } | |
824 | } | |
825 | ||
826 | static void ad9389b_edid_handler(struct work_struct *work) | |
827 | { | |
828 | struct delayed_work *dwork = to_delayed_work(work); | |
d3ec7de4 MB |
829 | struct ad9389b_state *state = |
830 | container_of(dwork, struct ad9389b_state, edid_handler); | |
117a55b6 HV |
831 | struct v4l2_subdev *sd = &state->sd; |
832 | struct ad9389b_edid_detect ed; | |
833 | ||
834 | v4l2_dbg(1, debug, sd, "%s:\n", __func__); | |
835 | ||
836 | if (ad9389b_check_edid_status(sd)) { | |
837 | /* Return if we received the EDID. */ | |
838 | return; | |
839 | } | |
840 | ||
841 | if (ad9389b_have_hotplug(sd)) { | |
842 | /* We must retry reading the EDID several times, it is possible | |
843 | * that initially the EDID couldn't be read due to i2c errors | |
844 | * (DVI connectors are particularly prone to this problem). */ | |
845 | if (state->edid.read_retries) { | |
846 | state->edid.read_retries--; | |
15edc1cc MB |
847 | v4l2_dbg(1, debug, sd, "%s: edid read failed\n", __func__); |
848 | state->have_monitor = false; | |
849 | ad9389b_s_power(sd, false); | |
850 | ad9389b_s_power(sd, true); | |
117a55b6 | 851 | queue_delayed_work(state->work_queue, |
d3ec7de4 | 852 | &state->edid_handler, EDID_DELAY); |
117a55b6 HV |
853 | return; |
854 | } | |
855 | } | |
856 | ||
857 | /* We failed to read the EDID, so send an event for this. */ | |
858 | ed.present = false; | |
859 | ed.segment = ad9389b_rd(sd, 0xc4); | |
860 | v4l2_subdev_notify(sd, AD9389B_EDID_DETECT, (void *)&ed); | |
861 | v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__); | |
862 | } | |
863 | ||
864 | static void ad9389b_audio_setup(struct v4l2_subdev *sd) | |
865 | { | |
866 | v4l2_dbg(1, debug, sd, "%s\n", __func__); | |
867 | ||
868 | ad9389b_s_i2s_clock_freq(sd, 48000); | |
869 | ad9389b_s_clock_freq(sd, 48000); | |
870 | ad9389b_s_routing(sd, 0, 0, 0); | |
871 | } | |
872 | ||
873 | /* Initial setup of AD9389b */ | |
874 | ||
875 | /* Configure hdmi transmitter. */ | |
876 | static void ad9389b_setup(struct v4l2_subdev *sd) | |
877 | { | |
878 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
879 | ||
880 | v4l2_dbg(1, debug, sd, "%s\n", __func__); | |
881 | ||
882 | /* Input format: RGB 4:4:4 */ | |
883 | ad9389b_wr_and_or(sd, 0x15, 0xf1, 0x0); | |
884 | /* Output format: RGB 4:4:4 */ | |
885 | ad9389b_wr_and_or(sd, 0x16, 0x3f, 0x0); | |
f3b33ede MR |
886 | /* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, |
887 | Aspect ratio: 16:9 */ | |
888 | ad9389b_wr_and_or(sd, 0x17, 0xf9, 0x06); | |
117a55b6 HV |
889 | /* Output format: RGB 4:4:4, Active Format Information is valid. */ |
890 | ad9389b_wr_and_or(sd, 0x45, 0xc7, 0x08); | |
891 | /* Underscanned */ | |
892 | ad9389b_wr_and_or(sd, 0x46, 0x3f, 0x80); | |
893 | /* Setup video format */ | |
894 | ad9389b_wr(sd, 0x3c, 0x0); | |
895 | /* Active format aspect ratio: same as picure. */ | |
896 | ad9389b_wr(sd, 0x47, 0x80); | |
897 | /* No encryption */ | |
898 | ad9389b_wr_and_or(sd, 0xaf, 0xef, 0x0); | |
899 | /* Positive clk edge capture for input video clock */ | |
900 | ad9389b_wr_and_or(sd, 0xba, 0x1f, 0x60); | |
901 | ||
902 | ad9389b_audio_setup(sd); | |
903 | ||
904 | v4l2_ctrl_handler_setup(&state->hdl); | |
905 | ||
906 | ad9389b_set_IT_content_AVI_InfoFrame(sd); | |
907 | } | |
908 | ||
909 | static void ad9389b_notify_monitor_detect(struct v4l2_subdev *sd) | |
910 | { | |
911 | struct ad9389b_monitor_detect mdt; | |
912 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
913 | ||
914 | mdt.present = state->have_monitor; | |
915 | v4l2_subdev_notify(sd, AD9389B_MONITOR_DETECT, (void *)&mdt); | |
916 | } | |
917 | ||
918 | static void ad9389b_check_monitor_present_status(struct v4l2_subdev *sd) | |
919 | { | |
920 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
921 | /* read hotplug and rx-sense state */ | |
922 | u8 status = ad9389b_rd(sd, 0x42); | |
923 | ||
924 | v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n", | |
925 | __func__, | |
926 | status, | |
927 | status & MASK_AD9389B_HPD_DETECT ? ", hotplug" : "", | |
928 | status & MASK_AD9389B_MSEN_DETECT ? ", rx-sense" : ""); | |
929 | ||
930 | if ((status & MASK_AD9389B_HPD_DETECT) && | |
931 | ((status & MASK_AD9389B_MSEN_DETECT) || state->edid.segments)) { | |
932 | v4l2_dbg(1, debug, sd, | |
933 | "%s: hotplug and (rx-sense or edid)\n", __func__); | |
934 | if (!state->have_monitor) { | |
935 | v4l2_dbg(1, debug, sd, "%s: monitor detected\n", __func__); | |
936 | state->have_monitor = true; | |
937 | ad9389b_set_isr(sd, true); | |
938 | if (!ad9389b_s_power(sd, true)) { | |
939 | v4l2_dbg(1, debug, sd, | |
940 | "%s: monitor detected, powerup failed\n", __func__); | |
941 | return; | |
942 | } | |
943 | ad9389b_setup(sd); | |
944 | ad9389b_notify_monitor_detect(sd); | |
945 | state->edid.read_retries = EDID_MAX_RETRIES; | |
946 | queue_delayed_work(state->work_queue, | |
947 | &state->edid_handler, EDID_DELAY); | |
948 | } | |
949 | } else if (status & MASK_AD9389B_HPD_DETECT) { | |
950 | v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__); | |
951 | state->edid.read_retries = EDID_MAX_RETRIES; | |
952 | queue_delayed_work(state->work_queue, | |
953 | &state->edid_handler, EDID_DELAY); | |
954 | } else if (!(status & MASK_AD9389B_HPD_DETECT)) { | |
955 | v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__); | |
956 | if (state->have_monitor) { | |
957 | v4l2_dbg(1, debug, sd, "%s: monitor not detected\n", __func__); | |
958 | state->have_monitor = false; | |
959 | ad9389b_notify_monitor_detect(sd); | |
960 | } | |
961 | ad9389b_s_power(sd, false); | |
962 | memset(&state->edid, 0, sizeof(struct ad9389b_state_edid)); | |
963 | } | |
964 | ||
965 | /* update read only ctrls */ | |
966 | v4l2_ctrl_s_ctrl(state->hotplug_ctrl, ad9389b_have_hotplug(sd) ? 0x1 : 0x0); | |
967 | v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, ad9389b_have_rx_sense(sd) ? 0x1 : 0x0); | |
968 | v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0); | |
969 | } | |
970 | ||
971 | static bool edid_block_verify_crc(u8 *edid_block) | |
972 | { | |
117a55b6 | 973 | u8 sum = 0; |
350a1815 | 974 | int i; |
117a55b6 | 975 | |
350a1815 MB |
976 | for (i = 0; i < 128; i++) |
977 | sum += edid_block[i]; | |
978 | return sum == 0; | |
117a55b6 HV |
979 | } |
980 | ||
bafd5d79 | 981 | static bool edid_verify_crc(struct v4l2_subdev *sd, u32 segment) |
117a55b6 HV |
982 | { |
983 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
984 | u32 blocks = state->edid.blocks; | |
985 | u8 *data = state->edid.data; | |
986 | ||
987 | if (edid_block_verify_crc(&data[segment * 256])) { | |
988 | if ((segment + 1) * 2 <= blocks) | |
989 | return edid_block_verify_crc(&data[segment * 256 + 128]); | |
990 | return true; | |
991 | } | |
992 | return false; | |
993 | } | |
994 | ||
bafd5d79 MR |
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 ad9389b_state *state = get_ad9389b_state(sd); | |
1001 | u8 *data = state->edid.data; | |
1002 | int i; | |
1003 | ||
1004 | if (segment) | |
1005 | return true; | |
1006 | ||
1007 | for (i = 0; i < ARRAY_SIZE(hdmi_header); i++) | |
1008 | if (data[i] != hdmi_header[i]) | |
1009 | return false; | |
1010 | ||
1011 | return true; | |
1012 | } | |
1013 | ||
117a55b6 HV |
1014 | static bool ad9389b_check_edid_status(struct v4l2_subdev *sd) |
1015 | { | |
1016 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
1017 | struct ad9389b_edid_detect ed; | |
1018 | int segment; | |
1019 | u8 edidRdy = ad9389b_rd(sd, 0xc5); | |
1020 | ||
1021 | v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n", | |
d3ec7de4 | 1022 | __func__, EDID_MAX_RETRIES - state->edid.read_retries); |
117a55b6 HV |
1023 | |
1024 | if (!(edidRdy & MASK_AD9389B_EDID_RDY)) | |
1025 | return false; | |
1026 | ||
1027 | segment = ad9389b_rd(sd, 0xc4); | |
1028 | if (segment >= EDID_MAX_SEGM) { | |
1029 | v4l2_err(sd, "edid segment number too big\n"); | |
1030 | return false; | |
1031 | } | |
1032 | v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment); | |
1033 | ad9389b_edid_rd(sd, 256, &state->edid.data[segment * 256]); | |
1034 | ad9389b_dbg_dump_edid(2, debug, sd, segment, | |
d3ec7de4 | 1035 | &state->edid.data[segment * 256]); |
117a55b6 HV |
1036 | if (segment == 0) { |
1037 | state->edid.blocks = state->edid.data[0x7e] + 1; | |
1038 | v4l2_dbg(1, debug, sd, "%s: %d blocks in total\n", | |
d3ec7de4 | 1039 | __func__, state->edid.blocks); |
117a55b6 | 1040 | } |
bafd5d79 | 1041 | if (!edid_verify_crc(sd, segment) || |
d3ec7de4 | 1042 | !edid_verify_header(sd, segment)) { |
117a55b6 | 1043 | /* edid crc error, force reread of edid segment */ |
bafd5d79 | 1044 | v4l2_err(sd, "%s: edid crc or header error\n", __func__); |
7be4f888 | 1045 | state->have_monitor = false; |
117a55b6 HV |
1046 | ad9389b_s_power(sd, false); |
1047 | ad9389b_s_power(sd, true); | |
1048 | return false; | |
1049 | } | |
1050 | /* one more segment read ok */ | |
1051 | state->edid.segments = segment + 1; | |
1052 | if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) { | |
1053 | /* Request next EDID segment */ | |
1054 | v4l2_dbg(1, debug, sd, "%s: request segment %d\n", | |
d3ec7de4 | 1055 | __func__, state->edid.segments); |
117a55b6 HV |
1056 | ad9389b_wr(sd, 0xc9, 0xf); |
1057 | ad9389b_wr(sd, 0xc4, state->edid.segments); | |
1058 | state->edid.read_retries = EDID_MAX_RETRIES; | |
1059 | queue_delayed_work(state->work_queue, | |
d3ec7de4 | 1060 | &state->edid_handler, EDID_DELAY); |
117a55b6 HV |
1061 | return false; |
1062 | } | |
1063 | ||
1064 | /* report when we have all segments but report only for segment 0 */ | |
1065 | ed.present = true; | |
1066 | ed.segment = 0; | |
1067 | v4l2_subdev_notify(sd, AD9389B_EDID_DETECT, (void *)&ed); | |
1068 | state->edid_detect_counter++; | |
1069 | v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0); | |
1070 | return ed.present; | |
1071 | } | |
1072 | ||
1073 | /* ----------------------------------------------------------------------- */ | |
1074 | ||
1075 | static void ad9389b_init_setup(struct v4l2_subdev *sd) | |
1076 | { | |
1077 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
1078 | struct ad9389b_state_edid *edid = &state->edid; | |
1079 | ||
1080 | v4l2_dbg(1, debug, sd, "%s\n", __func__); | |
1081 | ||
1082 | /* clear all interrupts */ | |
1083 | ad9389b_wr(sd, 0x96, 0xff); | |
1084 | ||
1085 | memset(edid, 0, sizeof(struct ad9389b_state_edid)); | |
1086 | state->have_monitor = false; | |
1087 | ad9389b_set_isr(sd, false); | |
1088 | } | |
1089 | ||
1090 | static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
1091 | { | |
1092 | const struct v4l2_dv_timings dv1080p60 = V4L2_DV_BT_CEA_1920X1080P60; | |
1093 | struct ad9389b_state *state; | |
1094 | struct ad9389b_platform_data *pdata = client->dev.platform_data; | |
1095 | struct v4l2_ctrl_handler *hdl; | |
1096 | struct v4l2_subdev *sd; | |
1097 | int err = -EIO; | |
1098 | ||
1099 | /* Check if the adapter supports the needed features */ | |
1100 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
1101 | return -EIO; | |
1102 | ||
1103 | v4l_dbg(1, debug, client, "detecting ad9389b client on address 0x%x\n", | |
d3ec7de4 | 1104 | client->addr << 1); |
117a55b6 | 1105 | |
c02b211d | 1106 | state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); |
117a55b6 HV |
1107 | if (!state) |
1108 | return -ENOMEM; | |
1109 | ||
1110 | /* Platform data */ | |
1111 | if (pdata == NULL) { | |
1112 | v4l_err(client, "No platform data!\n"); | |
c02b211d | 1113 | return -ENODEV; |
117a55b6 HV |
1114 | } |
1115 | memcpy(&state->pdata, pdata, sizeof(state->pdata)); | |
1116 | ||
1117 | sd = &state->sd; | |
1118 | v4l2_i2c_subdev_init(sd, client, &ad9389b_ops); | |
1119 | sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; | |
1120 | ||
1121 | hdl = &state->hdl; | |
1122 | v4l2_ctrl_handler_init(hdl, 5); | |
1123 | ||
1124 | /* private controls */ | |
1125 | ||
1126 | state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &ad9389b_ctrl_ops, | |
1127 | V4L2_CID_DV_TX_MODE, V4L2_DV_TX_MODE_HDMI, | |
1128 | 0, V4L2_DV_TX_MODE_DVI_D); | |
117a55b6 HV |
1129 | state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL, |
1130 | V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0); | |
117a55b6 HV |
1131 | state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL, |
1132 | V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0); | |
117a55b6 HV |
1133 | state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL, |
1134 | V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0); | |
117a55b6 HV |
1135 | state->rgb_quantization_range_ctrl = |
1136 | v4l2_ctrl_new_std_menu(hdl, &ad9389b_ctrl_ops, | |
1137 | V4L2_CID_DV_TX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL, | |
1138 | 0, V4L2_DV_RGB_RANGE_AUTO); | |
117a55b6 HV |
1139 | sd->ctrl_handler = hdl; |
1140 | if (hdl->error) { | |
1141 | err = hdl->error; | |
1142 | ||
1143 | goto err_hdl; | |
1144 | } | |
265d3b55 HV |
1145 | state->hdmi_mode_ctrl->is_private = true; |
1146 | state->hotplug_ctrl->is_private = true; | |
1147 | state->rx_sense_ctrl->is_private = true; | |
1148 | state->have_edid0_ctrl->is_private = true; | |
1149 | state->rgb_quantization_range_ctrl->is_private = true; | |
117a55b6 HV |
1150 | |
1151 | state->pad.flags = MEDIA_PAD_FL_SINK; | |
1152 | err = media_entity_init(&sd->entity, 1, &state->pad, 0); | |
1153 | if (err) | |
1154 | goto err_hdl; | |
1155 | ||
1156 | state->chip_revision = ad9389b_rd(sd, 0x0); | |
1157 | if (state->chip_revision != 2) { | |
1158 | v4l2_err(sd, "chip_revision %d != 2\n", state->chip_revision); | |
1159 | err = -EIO; | |
1160 | goto err_entity; | |
1161 | } | |
1162 | v4l2_dbg(1, debug, sd, "reg 0x41 0x%x, chip version (reg 0x00) 0x%x\n", | |
d3ec7de4 | 1163 | ad9389b_rd(sd, 0x41), state->chip_revision); |
117a55b6 HV |
1164 | |
1165 | state->edid_i2c_client = i2c_new_dummy(client->adapter, (0x7e>>1)); | |
1166 | if (state->edid_i2c_client == NULL) { | |
1167 | v4l2_err(sd, "failed to register edid i2c client\n"); | |
6ec735df | 1168 | err = -ENOMEM; |
117a55b6 HV |
1169 | goto err_entity; |
1170 | } | |
1171 | ||
1172 | state->work_queue = create_singlethread_workqueue(sd->name); | |
1173 | if (state->work_queue == NULL) { | |
1174 | v4l2_err(sd, "could not create workqueue\n"); | |
6ec735df | 1175 | err = -ENOMEM; |
117a55b6 HV |
1176 | goto err_unreg; |
1177 | } | |
1178 | ||
1179 | INIT_DELAYED_WORK(&state->edid_handler, ad9389b_edid_handler); | |
1180 | state->dv_timings = dv1080p60; | |
1181 | ||
1182 | ad9389b_init_setup(sd); | |
1183 | ad9389b_set_isr(sd, true); | |
1184 | ||
1185 | v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, | |
d3ec7de4 | 1186 | client->addr << 1, client->adapter->name); |
117a55b6 HV |
1187 | return 0; |
1188 | ||
1189 | err_unreg: | |
1190 | i2c_unregister_device(state->edid_i2c_client); | |
1191 | err_entity: | |
1192 | media_entity_cleanup(&sd->entity); | |
1193 | err_hdl: | |
1194 | v4l2_ctrl_handler_free(&state->hdl); | |
117a55b6 HV |
1195 | return err; |
1196 | } | |
1197 | ||
1198 | /* ----------------------------------------------------------------------- */ | |
1199 | ||
1200 | static int ad9389b_remove(struct i2c_client *client) | |
1201 | { | |
1202 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
1203 | struct ad9389b_state *state = get_ad9389b_state(sd); | |
1204 | ||
1205 | state->chip_revision = -1; | |
1206 | ||
1207 | v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name, | |
1208 | client->addr << 1, client->adapter->name); | |
1209 | ||
1210 | ad9389b_s_stream(sd, false); | |
1211 | ad9389b_s_audio_stream(sd, false); | |
1212 | ad9389b_init_setup(sd); | |
1213 | cancel_delayed_work(&state->edid_handler); | |
1214 | i2c_unregister_device(state->edid_i2c_client); | |
1215 | destroy_workqueue(state->work_queue); | |
1216 | v4l2_device_unregister_subdev(sd); | |
1217 | media_entity_cleanup(&sd->entity); | |
1218 | v4l2_ctrl_handler_free(sd->ctrl_handler); | |
117a55b6 HV |
1219 | return 0; |
1220 | } | |
1221 | ||
1222 | /* ----------------------------------------------------------------------- */ | |
1223 | ||
1224 | static struct i2c_device_id ad9389b_id[] = { | |
e1277110 HV |
1225 | { "ad9389b", 0 }, |
1226 | { "ad9889b", 0 }, | |
117a55b6 HV |
1227 | { } |
1228 | }; | |
1229 | MODULE_DEVICE_TABLE(i2c, ad9389b_id); | |
1230 | ||
1231 | static struct i2c_driver ad9389b_driver = { | |
1232 | .driver = { | |
1233 | .owner = THIS_MODULE, | |
1234 | .name = "ad9389b", | |
1235 | }, | |
1236 | .probe = ad9389b_probe, | |
1237 | .remove = ad9389b_remove, | |
1238 | .id_table = ad9389b_id, | |
1239 | }; | |
1240 | ||
1241 | module_i2c_driver(ad9389b_driver); |