2 * Analog Devices ADV7511 HDMI Transmitter Device Driver
4 * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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.
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
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>
37 module_param(debug, int, 0644);
38 MODULE_PARM_DESC(debug, "debug level (0-2)");
40 MODULE_DESCRIPTION("Analog Devices ADV7511 HDMI Transmitter Device Driver");
41 MODULE_AUTHOR("Hans Verkuil");
42 MODULE_LICENSE("GPL");
44 #define MASK_ADV7511_EDID_RDY_INT 0x04
45 #define MASK_ADV7511_MSEN_INT 0x40
46 #define MASK_ADV7511_HPD_INT 0x80
48 #define MASK_ADV7511_HPD_DETECT 0x40
49 #define MASK_ADV7511_MSEN_DETECT 0x20
50 #define MASK_ADV7511_EDID_RDY 0x10
52 #define EDID_MAX_RETRIES (8)
53 #define EDID_DELAY 250
54 #define EDID_MAX_SEGM 8
56 #define ADV7511_MAX_WIDTH 1920
57 #define ADV7511_MAX_HEIGHT 1200
58 #define ADV7511_MIN_PIXELCLOCK 20000000
59 #define ADV7511_MAX_PIXELCLOCK 225000000
62 **********************************************************************
64 * Arrays with configuration parameters for the ADV7511
66 **********************************************************************
69 struct i2c_reg_value {
74 struct adv7511_state_edid {
75 /* total number of blocks */
77 /* Number of segments read */
79 uint8_t data[EDID_MAX_SEGM * 256];
80 /* Number of EDID read retries left */
81 unsigned read_retries;
85 struct adv7511_state {
86 struct adv7511_platform_data pdata;
87 struct v4l2_subdev sd;
89 struct v4l2_ctrl_handler hdl;
91 uint8_t i2c_edid_addr;
93 /* Is the adv7511 powered on? */
95 /* Did we receive hotplug and rx-sense signals? */
97 /* timings from s_dv_timings */
98 struct v4l2_dv_timings dv_timings;
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 */
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);
120 static const struct v4l2_dv_timings_cap adv7511_timings_cap = {
121 .type = V4L2_DV_BT_656_1120,
123 .max_width = ADV7511_MAX_WIDTH,
124 .max_height = ADV7511_MAX_HEIGHT,
125 .min_pixelclock = ADV7511_MIN_PIXELCLOCK,
126 .max_pixelclock = ADV7511_MAX_PIXELCLOCK,
127 .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
128 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
129 .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE |
130 V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM,
134 static inline struct adv7511_state *get_adv7511_state(struct v4l2_subdev *sd)
136 return container_of(sd, struct adv7511_state, sd);
139 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
141 return &container_of(ctrl->handler, struct adv7511_state, hdl)->sd;
144 /* ------------------------ I2C ----------------------------------------------- */
146 static s32 adv_smbus_read_byte_data_check(struct i2c_client *client,
147 u8 command, bool check)
149 union i2c_smbus_data data;
151 if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags,
152 I2C_SMBUS_READ, command,
153 I2C_SMBUS_BYTE_DATA, &data))
156 v4l_err(client, "error reading %02x, %02x\n",
157 client->addr, command);
161 static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command)
164 for (i = 0; i < 3; i++) {
165 int ret = adv_smbus_read_byte_data_check(client, command, true);
168 v4l_err(client, "read ok after %d retries\n", i);
172 v4l_err(client, "read failed\n");
176 static int adv7511_rd(struct v4l2_subdev *sd, u8 reg)
178 struct i2c_client *client = v4l2_get_subdevdata(sd);
180 return adv_smbus_read_byte_data(client, reg);
183 static int adv7511_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
185 struct i2c_client *client = v4l2_get_subdevdata(sd);
189 for (i = 0; i < 3; i++) {
190 ret = i2c_smbus_write_byte_data(client, reg, val);
194 v4l2_err(sd, "%s: i2c write error\n", __func__);
198 /* To set specific bits in the register, a clear-mask is given (to be AND-ed),
199 and then the value-mask (to be OR-ed). */
200 static inline void adv7511_wr_and_or(struct v4l2_subdev *sd, u8 reg, uint8_t clr_mask, uint8_t val_mask)
202 adv7511_wr(sd, reg, (adv7511_rd(sd, reg) & clr_mask) | val_mask);
205 static int adv_smbus_read_i2c_block_data(struct i2c_client *client,
206 u8 command, unsigned length, u8 *values)
208 union i2c_smbus_data data;
211 if (length > I2C_SMBUS_BLOCK_MAX)
212 length = I2C_SMBUS_BLOCK_MAX;
213 data.block[0] = length;
215 ret = i2c_smbus_xfer(client->adapter, client->addr, client->flags,
216 I2C_SMBUS_READ, command,
217 I2C_SMBUS_I2C_BLOCK_DATA, &data);
218 memcpy(values, data.block + 1, length);
222 static inline void adv7511_edid_rd(struct v4l2_subdev *sd, uint16_t len, uint8_t *buf)
224 struct adv7511_state *state = get_adv7511_state(sd);
228 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
230 for (i = 0; !err && i < len; i += I2C_SMBUS_BLOCK_MAX)
231 err = adv_smbus_read_i2c_block_data(state->i2c_edid, i,
232 I2C_SMBUS_BLOCK_MAX, buf + i);
234 v4l2_err(sd, "%s: i2c read error\n", __func__);
237 static inline bool adv7511_have_hotplug(struct v4l2_subdev *sd)
239 return adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT;
242 static inline bool adv7511_have_rx_sense(struct v4l2_subdev *sd)
244 return adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT;
247 static void adv7511_csc_conversion_mode(struct v4l2_subdev *sd, uint8_t mode)
249 adv7511_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5);
252 static void adv7511_csc_coeff(struct v4l2_subdev *sd,
253 u16 A1, u16 A2, u16 A3, u16 A4,
254 u16 B1, u16 B2, u16 B3, u16 B4,
255 u16 C1, u16 C2, u16 C3, u16 C4)
258 adv7511_wr_and_or(sd, 0x18, 0xe0, A1>>8);
259 adv7511_wr(sd, 0x19, A1);
260 adv7511_wr_and_or(sd, 0x1A, 0xe0, A2>>8);
261 adv7511_wr(sd, 0x1B, A2);
262 adv7511_wr_and_or(sd, 0x1c, 0xe0, A3>>8);
263 adv7511_wr(sd, 0x1d, A3);
264 adv7511_wr_and_or(sd, 0x1e, 0xe0, A4>>8);
265 adv7511_wr(sd, 0x1f, A4);
268 adv7511_wr_and_or(sd, 0x20, 0xe0, B1>>8);
269 adv7511_wr(sd, 0x21, B1);
270 adv7511_wr_and_or(sd, 0x22, 0xe0, B2>>8);
271 adv7511_wr(sd, 0x23, B2);
272 adv7511_wr_and_or(sd, 0x24, 0xe0, B3>>8);
273 adv7511_wr(sd, 0x25, B3);
274 adv7511_wr_and_or(sd, 0x26, 0xe0, B4>>8);
275 adv7511_wr(sd, 0x27, B4);
278 adv7511_wr_and_or(sd, 0x28, 0xe0, C1>>8);
279 adv7511_wr(sd, 0x29, C1);
280 adv7511_wr_and_or(sd, 0x2A, 0xe0, C2>>8);
281 adv7511_wr(sd, 0x2B, C2);
282 adv7511_wr_and_or(sd, 0x2C, 0xe0, C3>>8);
283 adv7511_wr(sd, 0x2D, C3);
284 adv7511_wr_and_or(sd, 0x2E, 0xe0, C4>>8);
285 adv7511_wr(sd, 0x2F, C4);
288 static void adv7511_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable)
291 uint8_t csc_mode = 0;
292 adv7511_csc_conversion_mode(sd, csc_mode);
293 adv7511_csc_coeff(sd,
296 0, 0, 4096-564, 256);
298 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x80);
299 /* AVI infoframe: Limited range RGB (16-235) */
300 adv7511_wr_and_or(sd, 0x57, 0xf3, 0x04);
303 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
304 /* AVI infoframe: Full range RGB (0-255) */
305 adv7511_wr_and_or(sd, 0x57, 0xf3, 0x08);
309 static void adv7511_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd)
311 struct adv7511_state *state = get_adv7511_state(sd);
312 if (state->dv_timings.bt.standards & V4L2_DV_BT_STD_CEA861) {
313 /* CEA format, not IT */
314 adv7511_wr_and_or(sd, 0x57, 0x7f, 0x00);
317 adv7511_wr_and_or(sd, 0x57, 0x7f, 0x80);
321 static int adv7511_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl)
327 case V4L2_DV_RGB_RANGE_AUTO: {
329 struct adv7511_state *state = get_adv7511_state(sd);
331 if (state->dv_timings.bt.standards & V4L2_DV_BT_STD_CEA861) {
332 /* cea format, RGB limited range (16-235) */
333 adv7511_csc_rgb_full2limit(sd, true);
335 /* not cea format, RGB full range (0-255) */
336 adv7511_csc_rgb_full2limit(sd, false);
340 case V4L2_DV_RGB_RANGE_LIMITED:
341 /* RGB limited range (16-235) */
342 adv7511_csc_rgb_full2limit(sd, true);
344 case V4L2_DV_RGB_RANGE_FULL:
345 /* RGB full range (0-255) */
346 adv7511_csc_rgb_full2limit(sd, false);
352 /* ------------------------------ CTRL OPS ------------------------------ */
354 static int adv7511_s_ctrl(struct v4l2_ctrl *ctrl)
356 struct v4l2_subdev *sd = to_sd(ctrl);
357 struct adv7511_state *state = get_adv7511_state(sd);
359 v4l2_dbg(1, debug, sd, "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val);
361 if (state->hdmi_mode_ctrl == ctrl) {
362 /* Set HDMI or DVI-D */
363 adv7511_wr_and_or(sd, 0xaf, 0xfd, ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00);
366 if (state->rgb_quantization_range_ctrl == ctrl)
367 return adv7511_set_rgb_quantization_mode(sd, ctrl);
372 static const struct v4l2_ctrl_ops adv7511_ctrl_ops = {
373 .s_ctrl = adv7511_s_ctrl,
376 /* ---------------------------- CORE OPS ------------------------------------------- */
378 #ifdef CONFIG_VIDEO_ADV_DEBUG
379 static void adv7511_inv_register(struct v4l2_subdev *sd)
381 v4l2_info(sd, "0x000-0x0ff: Main Map\n");
384 static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
387 switch (reg->reg >> 8) {
389 reg->val = adv7511_rd(sd, reg->reg & 0xff);
392 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
393 adv7511_inv_register(sd);
399 static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
401 switch (reg->reg >> 8) {
403 adv7511_wr(sd, reg->reg & 0xff, reg->val & 0xff);
406 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
407 adv7511_inv_register(sd);
414 static int adv7511_log_status(struct v4l2_subdev *sd)
416 struct adv7511_state *state = get_adv7511_state(sd);
417 struct adv7511_state_edid *edid = &state->edid;
419 static const char * const states[] = {
425 "initializing HDCP repeater",
426 "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"
428 static const char * const errors[] = {
435 "max repeater cascade exceeded",
438 "9", "A", "B", "C", "D", "E", "F"
441 v4l2_info(sd, "power %s\n", state->power_on ? "on" : "off");
442 v4l2_info(sd, "%s hotplug, %s Rx Sense, %s EDID (%d block(s))\n",
443 (adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT) ? "detected" : "no",
444 (adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT) ? "detected" : "no",
445 edid->segments ? "found" : "no",
447 v4l2_info(sd, "%s output %s\n",
448 (adv7511_rd(sd, 0xaf) & 0x02) ?
450 (adv7511_rd(sd, 0xa1) & 0x3c) ?
451 "disabled" : "enabled");
452 v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n",
453 states[adv7511_rd(sd, 0xc8) & 0xf],
454 errors[adv7511_rd(sd, 0xc8) >> 4], state->edid_detect_counter,
455 adv7511_rd(sd, 0x94), adv7511_rd(sd, 0x96));
456 v4l2_info(sd, "RGB quantization: %s range\n", adv7511_rd(sd, 0x18) & 0x80 ? "limited" : "full");
457 if (state->dv_timings.type == V4L2_DV_BT_656_1120)
458 v4l2_print_dv_timings(sd->name, "timings: ",
459 &state->dv_timings, false);
461 v4l2_info(sd, "no timings set\n");
462 v4l2_info(sd, "i2c edid addr: 0x%x\n", state->i2c_edid_addr);
463 v4l2_info(sd, "i2c cec addr: 0x%x\n", state->i2c_cec_addr);
467 /* Power up/down adv7511 */
468 static int adv7511_s_power(struct v4l2_subdev *sd, int on)
470 struct adv7511_state *state = get_adv7511_state(sd);
471 const int retries = 20;
474 v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off");
476 state->power_on = on;
480 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
485 /* The adv7511 does not always come up immediately.
486 Retry multiple times. */
487 for (i = 0; i < retries; i++) {
488 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x0);
489 if ((adv7511_rd(sd, 0x41) & 0x40) == 0)
491 adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
495 v4l2_dbg(1, debug, sd, "%s: failed to powerup the adv7511!\n", __func__);
496 adv7511_s_power(sd, 0);
500 v4l2_dbg(1, debug, sd, "%s: needed %d retries to powerup the adv7511\n", __func__, i);
502 /* Reserved registers that must be set */
503 adv7511_wr(sd, 0x98, 0x03);
504 adv7511_wr_and_or(sd, 0x9a, 0xfe, 0x70);
505 adv7511_wr(sd, 0x9c, 0x30);
506 adv7511_wr_and_or(sd, 0x9d, 0xfc, 0x01);
507 adv7511_wr(sd, 0xa2, 0xa4);
508 adv7511_wr(sd, 0xa3, 0xa4);
509 adv7511_wr(sd, 0xe0, 0xd0);
510 adv7511_wr(sd, 0xf9, 0x00);
512 adv7511_wr(sd, 0x43, state->i2c_edid_addr);
514 /* Set number of attempts to read the EDID */
515 adv7511_wr(sd, 0xc9, 0xf);
519 /* Enable interrupts */
520 static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable)
522 uint8_t irqs = MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT;
526 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? "enable" : "disable");
528 /* The datasheet says that the EDID ready interrupt should be
529 disabled if there is no hotplug. */
532 else if (adv7511_have_hotplug(sd))
533 irqs |= MASK_ADV7511_EDID_RDY_INT;
536 * This i2c write can fail (approx. 1 in 1000 writes). But it
537 * is essential that this register is correct, so retry it
540 * Note that the i2c write does not report an error, but the readback
541 * clearly shows the wrong value.
544 adv7511_wr(sd, 0x94, irqs);
545 irqs_rd = adv7511_rd(sd, 0x94);
546 } while (retries-- && irqs_rd != irqs);
550 v4l2_err(sd, "Could not set interrupts: hw failure?\n");
553 /* Interrupt handler */
554 static int adv7511_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
558 /* disable interrupts to prevent a race condition */
559 adv7511_set_isr(sd, false);
560 irq_status = adv7511_rd(sd, 0x96);
561 /* clear detected interrupts */
562 adv7511_wr(sd, 0x96, irq_status);
564 v4l2_dbg(1, debug, sd, "%s: irq 0x%x\n", __func__, irq_status);
566 if (irq_status & (MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT))
567 adv7511_check_monitor_present_status(sd);
568 if (irq_status & MASK_ADV7511_EDID_RDY_INT)
569 adv7511_check_edid_status(sd);
571 /* enable interrupts */
572 adv7511_set_isr(sd, true);
579 static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid)
581 struct adv7511_state *state = get_adv7511_state(sd);
585 if ((edid->blocks == 0) || (edid->blocks > 256))
589 if (!state->edid.segments) {
590 v4l2_dbg(1, debug, sd, "EDID segment 0 not found\n");
593 if (edid->start_block >= state->edid.segments * 2)
595 if ((edid->blocks + edid->start_block) >= state->edid.segments * 2)
596 edid->blocks = state->edid.segments * 2 - edid->start_block;
598 memcpy(edid->edid, &state->edid.data[edid->start_block * 128],
603 static const struct v4l2_subdev_pad_ops adv7511_pad_ops = {
604 .get_edid = adv7511_get_edid,
607 static const struct v4l2_subdev_core_ops adv7511_core_ops = {
608 .log_status = adv7511_log_status,
609 #ifdef CONFIG_VIDEO_ADV_DEBUG
610 .g_register = adv7511_g_register,
611 .s_register = adv7511_s_register,
613 .s_power = adv7511_s_power,
614 .interrupt_service_routine = adv7511_isr,
617 /* ------------------------------ VIDEO OPS ------------------------------ */
619 /* Enable/disable adv7511 output */
620 static int adv7511_s_stream(struct v4l2_subdev *sd, int enable)
622 struct adv7511_state *state = get_adv7511_state(sd);
624 v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
625 adv7511_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c));
627 adv7511_check_monitor_present_status(sd);
629 adv7511_s_power(sd, 0);
630 state->have_monitor = false;
635 static int adv7511_s_dv_timings(struct v4l2_subdev *sd,
636 struct v4l2_dv_timings *timings)
638 struct adv7511_state *state = get_adv7511_state(sd);
640 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
642 /* quick sanity check */
643 if (!v4l2_valid_dv_timings(timings, &adv7511_timings_cap, NULL, NULL))
646 /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
647 if the format is one of the CEA or DMT timings. */
648 v4l2_find_dv_timings_cap(timings, &adv7511_timings_cap, 0, NULL, NULL);
650 timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;
653 state->dv_timings = *timings;
655 /* update quantization range based on new dv_timings */
656 adv7511_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl);
658 /* update AVI infoframe */
659 adv7511_set_IT_content_AVI_InfoFrame(sd);
664 static int adv7511_g_dv_timings(struct v4l2_subdev *sd,
665 struct v4l2_dv_timings *timings)
667 struct adv7511_state *state = get_adv7511_state(sd);
669 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
674 *timings = state->dv_timings;
679 static int adv7511_enum_dv_timings(struct v4l2_subdev *sd,
680 struct v4l2_enum_dv_timings *timings)
682 return v4l2_enum_dv_timings_cap(timings, &adv7511_timings_cap, NULL, NULL);
685 static int adv7511_dv_timings_cap(struct v4l2_subdev *sd,
686 struct v4l2_dv_timings_cap *cap)
688 *cap = adv7511_timings_cap;
692 static const struct v4l2_subdev_video_ops adv7511_video_ops = {
693 .s_stream = adv7511_s_stream,
694 .s_dv_timings = adv7511_s_dv_timings,
695 .g_dv_timings = adv7511_g_dv_timings,
696 .enum_dv_timings = adv7511_enum_dv_timings,
697 .dv_timings_cap = adv7511_dv_timings_cap,
700 /* ------------------------------ AUDIO OPS ------------------------------ */
701 static int adv7511_s_audio_stream(struct v4l2_subdev *sd, int enable)
703 v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
706 adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x80);
708 adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x40);
713 static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
718 case 32000: N = 4096; break;
719 case 44100: N = 6272; break;
720 case 48000: N = 6144; break;
721 case 88200: N = 12544; break;
722 case 96000: N = 12288; break;
723 case 176400: N = 25088; break;
724 case 192000: N = 24576; break;
729 /* Set N (used with CTS to regenerate the audio clock) */
730 adv7511_wr(sd, 0x01, (N >> 16) & 0xf);
731 adv7511_wr(sd, 0x02, (N >> 8) & 0xff);
732 adv7511_wr(sd, 0x03, N & 0xff);
737 static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
742 case 32000: i2s_sf = 0x30; break;
743 case 44100: i2s_sf = 0x00; break;
744 case 48000: i2s_sf = 0x20; break;
745 case 88200: i2s_sf = 0x80; break;
746 case 96000: i2s_sf = 0xa0; break;
747 case 176400: i2s_sf = 0xc0; break;
748 case 192000: i2s_sf = 0xe0; break;
753 /* Set sampling frequency for I2S audio to 48 kHz */
754 adv7511_wr_and_or(sd, 0x15, 0xf, i2s_sf);
759 static int adv7511_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config)
761 /* Only 2 channels in use for application */
762 adv7511_wr_and_or(sd, 0x73, 0xf8, 0x1);
763 /* Speaker mapping */
764 adv7511_wr(sd, 0x76, 0x00);
766 /* 16 bit audio word length */
767 adv7511_wr_and_or(sd, 0x14, 0xf0, 0x02);
772 static const struct v4l2_subdev_audio_ops adv7511_audio_ops = {
773 .s_stream = adv7511_s_audio_stream,
774 .s_clock_freq = adv7511_s_clock_freq,
775 .s_i2s_clock_freq = adv7511_s_i2s_clock_freq,
776 .s_routing = adv7511_s_routing,
779 /* --------------------- SUBDEV OPS --------------------------------------- */
781 static const struct v4l2_subdev_ops adv7511_ops = {
782 .core = &adv7511_core_ops,
783 .pad = &adv7511_pad_ops,
784 .video = &adv7511_video_ops,
785 .audio = &adv7511_audio_ops,
788 /* ----------------------------------------------------------------------- */
789 static void adv7511_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, int segment, uint8_t *buf)
793 v4l2_dbg(lvl, debug, sd, "edid segment %d\n", segment);
794 for (i = 0; i < 256; i += 16) {
798 v4l2_dbg(lvl, debug, sd, "\n");
799 for (j = i; j < i + 16; j++) {
800 sprintf(bp, "0x%02x, ", buf[j]);
804 v4l2_dbg(lvl, debug, sd, "%s\n", b);
809 static void adv7511_edid_handler(struct work_struct *work)
811 struct delayed_work *dwork = to_delayed_work(work);
812 struct adv7511_state *state = container_of(dwork, struct adv7511_state, edid_handler);
813 struct v4l2_subdev *sd = &state->sd;
814 struct adv7511_edid_detect ed;
816 v4l2_dbg(1, debug, sd, "%s:\n", __func__);
818 if (adv7511_check_edid_status(sd)) {
819 /* Return if we received the EDID. */
823 if (adv7511_have_hotplug(sd)) {
824 /* We must retry reading the EDID several times, it is possible
825 * that initially the EDID couldn't be read due to i2c errors
826 * (DVI connectors are particularly prone to this problem). */
827 if (state->edid.read_retries) {
828 state->edid.read_retries--;
829 v4l2_dbg(1, debug, sd, "%s: edid read failed\n", __func__);
830 state->have_monitor = false;
831 adv7511_s_power(sd, false);
832 adv7511_s_power(sd, true);
833 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
838 /* We failed to read the EDID, so send an event for this. */
840 ed.segment = adv7511_rd(sd, 0xc4);
841 v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
842 v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__);
845 static void adv7511_audio_setup(struct v4l2_subdev *sd)
847 v4l2_dbg(1, debug, sd, "%s\n", __func__);
849 adv7511_s_i2s_clock_freq(sd, 48000);
850 adv7511_s_clock_freq(sd, 48000);
851 adv7511_s_routing(sd, 0, 0, 0);
854 /* Configure hdmi transmitter. */
855 static void adv7511_setup(struct v4l2_subdev *sd)
857 struct adv7511_state *state = get_adv7511_state(sd);
858 v4l2_dbg(1, debug, sd, "%s\n", __func__);
860 /* Input format: RGB 4:4:4 */
861 adv7511_wr_and_or(sd, 0x15, 0xf0, 0x0);
862 /* Output format: RGB 4:4:4 */
863 adv7511_wr_and_or(sd, 0x16, 0x7f, 0x0);
864 /* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, Aspect ratio: 16:9 */
865 adv7511_wr_and_or(sd, 0x17, 0xf9, 0x06);
866 /* Disable pixel repetition */
867 adv7511_wr_and_or(sd, 0x3b, 0x9f, 0x0);
869 adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
870 /* Output format: RGB 4:4:4, Active Format Information is valid,
872 adv7511_wr_and_or(sd, 0x55, 0x9c, 0x12);
873 /* AVI Info frame packet enable, Audio Info frame disable */
874 adv7511_wr_and_or(sd, 0x44, 0xe7, 0x10);
875 /* Colorimetry, Active format aspect ratio: same as picure. */
876 adv7511_wr(sd, 0x56, 0xa8);
878 adv7511_wr_and_or(sd, 0xaf, 0xed, 0x0);
880 /* Positive clk edge capture for input video clock */
881 adv7511_wr_and_or(sd, 0xba, 0x1f, 0x60);
883 adv7511_audio_setup(sd);
885 v4l2_ctrl_handler_setup(&state->hdl);
888 static void adv7511_notify_monitor_detect(struct v4l2_subdev *sd)
890 struct adv7511_monitor_detect mdt;
891 struct adv7511_state *state = get_adv7511_state(sd);
893 mdt.present = state->have_monitor;
894 v4l2_subdev_notify(sd, ADV7511_MONITOR_DETECT, (void *)&mdt);
897 static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd)
899 struct adv7511_state *state = get_adv7511_state(sd);
900 /* read hotplug and rx-sense state */
901 uint8_t status = adv7511_rd(sd, 0x42);
903 v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n",
906 status & MASK_ADV7511_HPD_DETECT ? ", hotplug" : "",
907 status & MASK_ADV7511_MSEN_DETECT ? ", rx-sense" : "");
909 /* update read only ctrls */
910 v4l2_ctrl_s_ctrl(state->hotplug_ctrl, adv7511_have_hotplug(sd) ? 0x1 : 0x0);
911 v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, adv7511_have_rx_sense(sd) ? 0x1 : 0x0);
912 v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0);
914 if ((status & MASK_ADV7511_HPD_DETECT) && ((status & MASK_ADV7511_MSEN_DETECT) || state->edid.segments)) {
915 v4l2_dbg(1, debug, sd, "%s: hotplug and (rx-sense or edid)\n", __func__);
916 if (!state->have_monitor) {
917 v4l2_dbg(1, debug, sd, "%s: monitor detected\n", __func__);
918 state->have_monitor = true;
919 adv7511_set_isr(sd, true);
920 if (!adv7511_s_power(sd, true)) {
921 v4l2_dbg(1, debug, sd, "%s: monitor detected, powerup failed\n", __func__);
925 adv7511_notify_monitor_detect(sd);
926 state->edid.read_retries = EDID_MAX_RETRIES;
927 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
929 } else if (status & MASK_ADV7511_HPD_DETECT) {
930 v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__);
931 state->edid.read_retries = EDID_MAX_RETRIES;
932 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
933 } else if (!(status & MASK_ADV7511_HPD_DETECT)) {
934 v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__);
935 if (state->have_monitor) {
936 v4l2_dbg(1, debug, sd, "%s: monitor not detected\n", __func__);
937 state->have_monitor = false;
938 adv7511_notify_monitor_detect(sd);
940 adv7511_s_power(sd, false);
941 memset(&state->edid, 0, sizeof(struct adv7511_state_edid));
945 static bool edid_block_verify_crc(uint8_t *edid_block)
950 for (i = 0; i < 128; i++)
951 sum += *(edid_block + i);
955 static bool edid_segment_verify_crc(struct v4l2_subdev *sd, u32 segment)
957 struct adv7511_state *state = get_adv7511_state(sd);
958 u32 blocks = state->edid.blocks;
959 uint8_t *data = state->edid.data;
961 if (edid_block_verify_crc(&data[segment * 256])) {
962 if ((segment + 1) * 2 <= blocks)
963 return edid_block_verify_crc(&data[segment * 256 + 128]);
969 static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
971 struct adv7511_state *state = get_adv7511_state(sd);
972 uint8_t edidRdy = adv7511_rd(sd, 0xc5);
974 v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n",
975 __func__, EDID_MAX_RETRIES - state->edid.read_retries);
977 if (state->edid.complete)
980 if (edidRdy & MASK_ADV7511_EDID_RDY) {
981 int segment = adv7511_rd(sd, 0xc4);
982 struct adv7511_edid_detect ed;
984 if (segment >= EDID_MAX_SEGM) {
985 v4l2_err(sd, "edid segment number too big\n");
988 v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment);
989 adv7511_edid_rd(sd, 256, &state->edid.data[segment * 256]);
990 adv7511_dbg_dump_edid(2, debug, sd, segment, &state->edid.data[segment * 256]);
992 state->edid.blocks = state->edid.data[0x7e] + 1;
993 v4l2_dbg(1, debug, sd, "%s: %d blocks in total\n", __func__, state->edid.blocks);
995 if (!edid_segment_verify_crc(sd, segment)) {
996 /* edid crc error, force reread of edid segment */
997 v4l2_dbg(1, debug, sd, "%s: edid crc error\n", __func__);
998 state->have_monitor = false;
999 adv7511_s_power(sd, false);
1000 adv7511_s_power(sd, true);
1003 /* one more segment read ok */
1004 state->edid.segments = segment + 1;
1005 if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) {
1006 /* Request next EDID segment */
1007 v4l2_dbg(1, debug, sd, "%s: request segment %d\n", __func__, state->edid.segments);
1008 adv7511_wr(sd, 0xc9, 0xf);
1009 adv7511_wr(sd, 0xc4, state->edid.segments);
1010 state->edid.read_retries = EDID_MAX_RETRIES;
1011 queue_delayed_work(state->work_queue, &state->edid_handler, EDID_DELAY);
1015 v4l2_dbg(1, debug, sd, "%s: edid complete with %d segment(s)\n", __func__, state->edid.segments);
1016 state->edid.complete = true;
1018 /* report when we have all segments
1019 but report only for segment 0
1023 state->edid_detect_counter++;
1024 v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0);
1025 v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
1032 /* ----------------------------------------------------------------------- */
1034 static void adv7511_init_setup(struct v4l2_subdev *sd)
1036 struct adv7511_state *state = get_adv7511_state(sd);
1037 struct adv7511_state_edid *edid = &state->edid;
1039 v4l2_dbg(1, debug, sd, "%s\n", __func__);
1041 /* clear all interrupts */
1042 adv7511_wr(sd, 0x96, 0xff);
1043 memset(edid, 0, sizeof(struct adv7511_state_edid));
1044 state->have_monitor = false;
1045 adv7511_set_isr(sd, false);
1046 adv7511_s_stream(sd, false);
1047 adv7511_s_audio_stream(sd, false);
1050 static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *id)
1052 struct adv7511_state *state;
1053 struct adv7511_platform_data *pdata = client->dev.platform_data;
1054 struct v4l2_ctrl_handler *hdl;
1055 struct v4l2_subdev *sd;
1059 /* Check if the adapter supports the needed features */
1060 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1063 state = devm_kzalloc(&client->dev, sizeof(struct adv7511_state), GFP_KERNEL);
1069 v4l_err(client, "No platform data!\n");
1072 memcpy(&state->pdata, pdata, sizeof(state->pdata));
1076 v4l2_dbg(1, debug, sd, "detecting adv7511 client on address 0x%x\n",
1079 v4l2_i2c_subdev_init(sd, client, &adv7511_ops);
1082 v4l2_ctrl_handler_init(hdl, 10);
1083 /* add in ascending ID order */
1084 state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1085 V4L2_CID_DV_TX_MODE, V4L2_DV_TX_MODE_HDMI,
1086 0, V4L2_DV_TX_MODE_DVI_D);
1087 state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1088 V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0);
1089 state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1090 V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0);
1091 state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL,
1092 V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0);
1093 state->rgb_quantization_range_ctrl =
1094 v4l2_ctrl_new_std_menu(hdl, &adv7511_ctrl_ops,
1095 V4L2_CID_DV_TX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL,
1096 0, V4L2_DV_RGB_RANGE_AUTO);
1097 sd->ctrl_handler = hdl;
1102 state->hdmi_mode_ctrl->is_private = true;
1103 state->hotplug_ctrl->is_private = true;
1104 state->rx_sense_ctrl->is_private = true;
1105 state->have_edid0_ctrl->is_private = true;
1106 state->rgb_quantization_range_ctrl->is_private = true;
1108 state->pad.flags = MEDIA_PAD_FL_SINK;
1109 err = media_entity_init(&sd->entity, 1, &state->pad, 0);
1113 /* EDID and CEC i2c addr */
1114 state->i2c_edid_addr = state->pdata.i2c_edid << 1;
1115 state->i2c_cec_addr = state->pdata.i2c_cec << 1;
1117 state->chip_revision = adv7511_rd(sd, 0x0);
1118 chip_id[0] = adv7511_rd(sd, 0xf5);
1119 chip_id[1] = adv7511_rd(sd, 0xf6);
1120 if (chip_id[0] != 0x75 || chip_id[1] != 0x11) {
1121 v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0], chip_id[1]);
1126 state->i2c_edid = i2c_new_dummy(client->adapter, state->i2c_edid_addr >> 1);
1127 if (state->i2c_edid == NULL) {
1128 v4l2_err(sd, "failed to register edid i2c client\n");
1132 adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */
1133 state->work_queue = create_singlethread_workqueue(sd->name);
1134 if (state->work_queue == NULL) {
1135 v4l2_err(sd, "could not create workqueue\n");
1139 INIT_DELAYED_WORK(&state->edid_handler, adv7511_edid_handler);
1141 adv7511_init_setup(sd);
1142 adv7511_set_isr(sd, true);
1143 adv7511_check_monitor_present_status(sd);
1145 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
1146 client->addr << 1, client->adapter->name);
1150 i2c_unregister_device(state->i2c_edid);
1152 media_entity_cleanup(&sd->entity);
1154 v4l2_ctrl_handler_free(&state->hdl);
1158 /* ----------------------------------------------------------------------- */
1160 static int adv7511_remove(struct i2c_client *client)
1162 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1163 struct adv7511_state *state = get_adv7511_state(sd);
1165 state->chip_revision = -1;
1167 v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,
1168 client->addr << 1, client->adapter->name);
1170 adv7511_init_setup(sd);
1171 cancel_delayed_work(&state->edid_handler);
1172 i2c_unregister_device(state->i2c_edid);
1173 destroy_workqueue(state->work_queue);
1174 v4l2_device_unregister_subdev(sd);
1175 media_entity_cleanup(&sd->entity);
1176 v4l2_ctrl_handler_free(sd->ctrl_handler);
1180 /* ----------------------------------------------------------------------- */
1182 static struct i2c_device_id adv7511_id[] = {
1186 MODULE_DEVICE_TABLE(i2c, adv7511_id);
1188 static struct i2c_driver adv7511_driver = {
1190 .owner = THIS_MODULE,
1193 .probe = adv7511_probe,
1194 .remove = adv7511_remove,
1195 .id_table = adv7511_id,
1198 module_i2c_driver(adv7511_driver);