2 * adv7180.c Analog Devices ADV7180 video decoder driver
3 * Copyright (c) 2009 Intel Corporation
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/errno.h>
22 #include <linux/kernel.h>
23 #include <linux/interrupt.h>
24 #include <linux/i2c.h>
25 #include <linux/slab.h>
26 #include <media/v4l2-ioctl.h>
27 #include <linux/videodev2.h>
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-chip-ident.h>
30 #include <linux/mutex.h>
32 #define DRIVER_NAME "adv7180"
34 #define ADV7180_INPUT_CONTROL_REG 0x00
35 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00
36 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
37 #define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM 0x20
38 #define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM 0x30
39 #define ADV7180_INPUT_CONTROL_NTSC_J 0x40
40 #define ADV7180_INPUT_CONTROL_NTSC_M 0x50
41 #define ADV7180_INPUT_CONTROL_PAL60 0x60
42 #define ADV7180_INPUT_CONTROL_NTSC_443 0x70
43 #define ADV7180_INPUT_CONTROL_PAL_BG 0x80
44 #define ADV7180_INPUT_CONTROL_PAL_N 0x90
45 #define ADV7180_INPUT_CONTROL_PAL_M 0xa0
46 #define ADV7180_INPUT_CONTROL_PAL_M_PED 0xb0
47 #define ADV7180_INPUT_CONTROL_PAL_COMB_N 0xc0
48 #define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED 0xd0
49 #define ADV7180_INPUT_CONTROL_PAL_SECAM 0xe0
50 #define ADV7180_INPUT_CONTROL_PAL_SECAM_PED 0xf0
51 #define ADV7180_INPUT_CONTROL_INSEL_MASK 0x0f
53 #define ADV7180_EXTENDED_OUTPUT_CONTROL_REG 0x04
54 #define ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS 0xC5
56 #define ADV7180_AUTODETECT_ENABLE_REG 0x07
57 #define ADV7180_AUTODETECT_DEFAULT 0x7f
59 #define ADV7180_CON_REG 0x08 /*Unsigned */
61 #define CON_REG_DEF 128
62 #define CON_REG_MAX 255
64 #define ADV7180_BRI_REG 0x0a /*Signed */
65 #define BRI_REG_MIN -128
67 #define BRI_REG_MAX 127
69 #define ADV7180_HUE_REG 0x0b /*Signed, inverted */
70 #define HUE_REG_MIN -127
72 #define HUE_REG_MAX 128
74 #define ADV7180_ADI_CTRL_REG 0x0e
75 #define ADV7180_ADI_CTRL_IRQ_SPACE 0x20
77 #define ADV7180_PWR_MAN_REG 0x0f
78 #define ADV7180_PWR_MAN_ON 0x04
79 #define ADV7180_PWR_MAN_OFF 0x24
80 #define ADV7180_PWR_MAN_RES 0x80
82 #define ADV7180_STATUS1_REG 0x10
83 #define ADV7180_STATUS1_IN_LOCK 0x01
84 #define ADV7180_STATUS1_AUTOD_MASK 0x70
85 #define ADV7180_STATUS1_AUTOD_NTSM_M_J 0x00
86 #define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
87 #define ADV7180_STATUS1_AUTOD_PAL_M 0x20
88 #define ADV7180_STATUS1_AUTOD_PAL_60 0x30
89 #define ADV7180_STATUS1_AUTOD_PAL_B_G 0x40
90 #define ADV7180_STATUS1_AUTOD_SECAM 0x50
91 #define ADV7180_STATUS1_AUTOD_PAL_COMB 0x60
92 #define ADV7180_STATUS1_AUTOD_SECAM_525 0x70
94 #define ADV7180_IDENT_REG 0x11
95 #define ADV7180_ID_7180 0x18
97 #define ADV7180_ICONF1_ADI 0x40
98 #define ADV7180_ICONF1_ACTIVE_LOW 0x01
99 #define ADV7180_ICONF1_PSYNC_ONLY 0x10
100 #define ADV7180_ICONF1_ACTIVE_TO_CLR 0xC0
102 #define ADV7180_SD_SAT_CB_REG 0xe3 /*Unsigned */
103 #define ADV7180_SD_SAT_CR_REG 0xe4 /*Unsigned */
104 #define SAT_REG_MIN 0
105 #define SAT_REG_DEF 128
106 #define SAT_REG_MAX 255
108 #define ADV7180_IRQ1_LOCK 0x01
109 #define ADV7180_IRQ1_UNLOCK 0x02
110 #define ADV7180_ISR1_ADI 0x42
111 #define ADV7180_ICR1_ADI 0x43
112 #define ADV7180_IMR1_ADI 0x44
113 #define ADV7180_IMR2_ADI 0x48
114 #define ADV7180_IRQ3_AD_CHANGE 0x08
115 #define ADV7180_ISR3_ADI 0x4A
116 #define ADV7180_ICR3_ADI 0x4B
117 #define ADV7180_IMR3_ADI 0x4C
118 #define ADV7180_IMR4_ADI 0x50
120 #define ADV7180_NTSC_V_BIT_END_REG 0xE6
121 #define ADV7180_NTSC_V_BIT_END_MANUAL_NVEND 0x4F
123 struct adv7180_state {
124 struct v4l2_subdev sd;
125 struct work_struct work;
126 struct mutex mutex; /* mutual excl. when accessing chip */
128 v4l2_std_id curr_norm;
137 static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
139 switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
140 case ADV7180_STATUS1_AUTOD_NTSM_M_J:
141 return V4L2_STD_NTSC;
142 case ADV7180_STATUS1_AUTOD_NTSC_4_43:
143 return V4L2_STD_NTSC_443;
144 case ADV7180_STATUS1_AUTOD_PAL_M:
145 return V4L2_STD_PAL_M;
146 case ADV7180_STATUS1_AUTOD_PAL_60:
147 return V4L2_STD_PAL_60;
148 case ADV7180_STATUS1_AUTOD_PAL_B_G:
150 case ADV7180_STATUS1_AUTOD_SECAM:
151 return V4L2_STD_SECAM;
152 case ADV7180_STATUS1_AUTOD_PAL_COMB:
153 return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
154 case ADV7180_STATUS1_AUTOD_SECAM_525:
155 return V4L2_STD_SECAM;
157 return V4L2_STD_UNKNOWN;
161 static int v4l2_std_to_adv7180(v4l2_std_id std)
163 if (std == V4L2_STD_PAL_60)
164 return ADV7180_INPUT_CONTROL_PAL60;
165 if (std == V4L2_STD_NTSC_443)
166 return ADV7180_INPUT_CONTROL_NTSC_443;
167 if (std == V4L2_STD_PAL_N)
168 return ADV7180_INPUT_CONTROL_PAL_N;
169 if (std == V4L2_STD_PAL_M)
170 return ADV7180_INPUT_CONTROL_PAL_M;
171 if (std == V4L2_STD_PAL_Nc)
172 return ADV7180_INPUT_CONTROL_PAL_COMB_N;
174 if (std & V4L2_STD_PAL)
175 return ADV7180_INPUT_CONTROL_PAL_BG;
176 if (std & V4L2_STD_NTSC)
177 return ADV7180_INPUT_CONTROL_NTSC_M;
178 if (std & V4L2_STD_SECAM)
179 return ADV7180_INPUT_CONTROL_PAL_SECAM;
184 static u32 adv7180_status_to_v4l2(u8 status1)
186 if (!(status1 & ADV7180_STATUS1_IN_LOCK))
187 return V4L2_IN_ST_NO_SIGNAL;
192 static int __adv7180_status(struct i2c_client *client, u32 *status,
195 int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);
201 *status = adv7180_status_to_v4l2(status1);
203 *std = adv7180_std_to_v4l2(status1);
208 static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
210 return container_of(sd, struct adv7180_state, sd);
213 static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
215 struct adv7180_state *state = to_state(sd);
216 int err = mutex_lock_interruptible(&state->mutex);
220 /* when we are interrupt driven we know the state */
221 if (!state->autodetect || state->irq > 0)
222 *std = state->curr_norm;
224 err = __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);
226 mutex_unlock(&state->mutex);
230 static int adv7180_s_routing(struct v4l2_subdev *sd, u32 input,
231 u32 output, u32 config)
233 struct adv7180_state *state = to_state(sd);
234 int ret = mutex_lock_interruptible(&state->mutex);
235 struct i2c_client *client = v4l2_get_subdevdata(sd);
240 /*We cannot discriminate between LQFP and 40-pin LFCSP, so accept
241 * all inputs and let the card driver take care of validation
243 if ((input & ADV7180_INPUT_CONTROL_INSEL_MASK) != input)
246 ret = i2c_smbus_read_byte_data(client, ADV7180_INPUT_CONTROL_REG);
251 ret &= ~ADV7180_INPUT_CONTROL_INSEL_MASK;
252 ret = i2c_smbus_write_byte_data(client,
253 ADV7180_INPUT_CONTROL_REG, ret | input);
254 state->input = input;
256 mutex_unlock(&state->mutex);
260 static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
262 struct adv7180_state *state = to_state(sd);
263 int ret = mutex_lock_interruptible(&state->mutex);
267 ret = __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
268 mutex_unlock(&state->mutex);
272 static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
273 struct v4l2_dbg_chip_ident *chip)
275 struct i2c_client *client = v4l2_get_subdevdata(sd);
277 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0);
280 static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
282 struct adv7180_state *state = to_state(sd);
283 struct i2c_client *client = v4l2_get_subdevdata(sd);
284 int ret = mutex_lock_interruptible(&state->mutex);
288 /* all standards -> autodetect */
289 if (std == V4L2_STD_ALL) {
291 i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
292 ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
297 __adv7180_status(client, NULL, &state->curr_norm);
298 state->autodetect = true;
300 ret = v4l2_std_to_adv7180(std);
304 ret = i2c_smbus_write_byte_data(client,
305 ADV7180_INPUT_CONTROL_REG,
310 state->curr_norm = std;
311 state->autodetect = false;
315 mutex_unlock(&state->mutex);
319 static int adv7180_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
322 case V4L2_CID_BRIGHTNESS:
323 return v4l2_ctrl_query_fill(qc, BRI_REG_MIN, BRI_REG_MAX,
326 return v4l2_ctrl_query_fill(qc, HUE_REG_MIN, HUE_REG_MAX,
328 case V4L2_CID_CONTRAST:
329 return v4l2_ctrl_query_fill(qc, CON_REG_MIN, CON_REG_MAX,
331 case V4L2_CID_SATURATION:
332 return v4l2_ctrl_query_fill(qc, SAT_REG_MIN, SAT_REG_MAX,
341 static int adv7180_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
343 struct adv7180_state *state = to_state(sd);
344 int ret = mutex_lock_interruptible(&state->mutex);
349 case V4L2_CID_BRIGHTNESS:
350 ctrl->value = state->brightness;
353 ctrl->value = state->hue;
355 case V4L2_CID_CONTRAST:
356 ctrl->value = state->contrast;
358 case V4L2_CID_SATURATION:
359 ctrl->value = state->saturation;
365 mutex_unlock(&state->mutex);
369 static int adv7180_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
371 struct adv7180_state *state = to_state(sd);
372 struct i2c_client *client = v4l2_get_subdevdata(sd);
373 int ret = mutex_lock_interruptible(&state->mutex);
378 case V4L2_CID_BRIGHTNESS:
379 if ((ctrl->value > BRI_REG_MAX)
380 || (ctrl->value < BRI_REG_MIN)) {
384 state->brightness = ctrl->value;
385 ret = i2c_smbus_write_byte_data(client,
390 if ((ctrl->value > HUE_REG_MAX)
391 || (ctrl->value < HUE_REG_MIN)) {
395 state->hue = ctrl->value;
396 /*Hue is inverted according to HSL chart */
397 ret = i2c_smbus_write_byte_data(client,
398 ADV7180_HUE_REG, -state->hue);
400 case V4L2_CID_CONTRAST:
401 if ((ctrl->value > CON_REG_MAX)
402 || (ctrl->value < CON_REG_MIN)) {
406 state->contrast = ctrl->value;
407 ret = i2c_smbus_write_byte_data(client,
411 case V4L2_CID_SATURATION:
412 if ((ctrl->value > SAT_REG_MAX)
413 || (ctrl->value < SAT_REG_MIN)) {
418 *This could be V4L2_CID_BLUE_BALANCE/V4L2_CID_RED_BALANCE
419 *Let's not confuse the user, everybody understands saturation
421 state->saturation = ctrl->value;
422 ret = i2c_smbus_write_byte_data(client,
423 ADV7180_SD_SAT_CB_REG,
427 ret = i2c_smbus_write_byte_data(client,
428 ADV7180_SD_SAT_CR_REG,
435 mutex_unlock(&state->mutex);
439 static const struct v4l2_subdev_video_ops adv7180_video_ops = {
440 .querystd = adv7180_querystd,
441 .g_input_status = adv7180_g_input_status,
442 .s_routing = adv7180_s_routing,
445 static const struct v4l2_subdev_core_ops adv7180_core_ops = {
446 .g_chip_ident = adv7180_g_chip_ident,
447 .s_std = adv7180_s_std,
448 .queryctrl = adv7180_queryctrl,
449 .g_ctrl = adv7180_g_ctrl,
450 .s_ctrl = adv7180_s_ctrl,
453 static const struct v4l2_subdev_ops adv7180_ops = {
454 .core = &adv7180_core_ops,
455 .video = &adv7180_video_ops,
458 static void adv7180_work(struct work_struct *work)
460 struct adv7180_state *state = container_of(work, struct adv7180_state,
462 struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
465 mutex_lock(&state->mutex);
466 i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG,
467 ADV7180_ADI_CTRL_IRQ_SPACE);
468 isr3 = i2c_smbus_read_byte_data(client, ADV7180_ISR3_ADI);
470 i2c_smbus_write_byte_data(client, ADV7180_ICR3_ADI, isr3);
471 i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, 0);
473 if (isr3 & ADV7180_IRQ3_AD_CHANGE && state->autodetect)
474 __adv7180_status(client, NULL, &state->curr_norm);
475 mutex_unlock(&state->mutex);
477 enable_irq(state->irq);
480 static irqreturn_t adv7180_irq(int irq, void *devid)
482 struct adv7180_state *state = devid;
484 schedule_work(&state->work);
486 disable_irq_nosync(state->irq);
491 static int init_device(struct i2c_client *client, struct adv7180_state *state)
495 /* Initialize adv7180 */
496 /* Enable autodetection */
497 if (state->autodetect) {
499 i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
500 ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
506 i2c_smbus_write_byte_data(client,
507 ADV7180_AUTODETECT_ENABLE_REG,
508 ADV7180_AUTODETECT_DEFAULT);
512 ret = v4l2_std_to_adv7180(state->curr_norm);
517 i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
523 /* ITU-R BT.656-4 compatible */
524 ret = i2c_smbus_write_byte_data(client,
525 ADV7180_EXTENDED_OUTPUT_CONTROL_REG,
526 ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS);
530 /* Manually set V bit end position in NTSC mode */
531 ret = i2c_smbus_write_byte_data(client,
532 ADV7180_NTSC_V_BIT_END_REG,
533 ADV7180_NTSC_V_BIT_END_MANUAL_NVEND);
537 /* read current norm */
538 __adv7180_status(client, NULL, &state->curr_norm);
540 /* register for interrupts */
541 if (state->irq > 0) {
542 ret = request_irq(state->irq, adv7180_irq, 0, DRIVER_NAME,
547 ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG,
548 ADV7180_ADI_CTRL_IRQ_SPACE);
552 /* config the Interrupt pin to be active low */
553 ret = i2c_smbus_write_byte_data(client, ADV7180_ICONF1_ADI,
554 ADV7180_ICONF1_ACTIVE_LOW |
555 ADV7180_ICONF1_PSYNC_ONLY);
559 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR1_ADI, 0);
563 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR2_ADI, 0);
567 /* enable AD change interrupts interrupts */
568 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR3_ADI,
569 ADV7180_IRQ3_AD_CHANGE);
573 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR4_ADI, 0);
577 ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG,
583 /*Set default value for controls */
584 ret = i2c_smbus_write_byte_data(client, ADV7180_BRI_REG,
589 ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, state->hue);
593 ret = i2c_smbus_write_byte_data(client, ADV7180_CON_REG,
598 ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CB_REG,
603 ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CR_REG,
611 static __devinit int adv7180_probe(struct i2c_client *client,
612 const struct i2c_device_id *id)
614 struct adv7180_state *state;
615 struct v4l2_subdev *sd;
618 /* Check if the adapter supports the needed features */
619 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
622 v4l_info(client, "chip found @ 0x%02x (%s)\n",
623 client->addr, client->adapter->name);
625 state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
631 state->irq = client->irq;
632 INIT_WORK(&state->work, adv7180_work);
633 mutex_init(&state->mutex);
634 state->autodetect = true;
635 state->brightness = BRI_REG_DEF;
636 state->hue = HUE_REG_DEF;
637 state->contrast = CON_REG_DEF;
638 state->saturation = SAT_REG_DEF;
641 v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
643 ret = init_device(client, state);
645 goto err_unreg_subdev;
649 mutex_destroy(&state->mutex);
650 v4l2_device_unregister_subdev(sd);
653 printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", ret);
657 static __devexit int adv7180_remove(struct i2c_client *client)
659 struct v4l2_subdev *sd = i2c_get_clientdata(client);
660 struct adv7180_state *state = to_state(sd);
662 if (state->irq > 0) {
663 free_irq(client->irq, state);
664 if (cancel_work_sync(&state->work)) {
666 * Work was pending, therefore we need to enable
667 * IRQ here to balance the disable_irq() done in the
670 enable_irq(state->irq);
674 mutex_destroy(&state->mutex);
675 v4l2_device_unregister_subdev(sd);
680 static const struct i2c_device_id adv7180_id[] = {
686 static int adv7180_suspend(struct i2c_client *client, pm_message_t state)
690 ret = i2c_smbus_write_byte_data(client, ADV7180_PWR_MAN_REG,
691 ADV7180_PWR_MAN_OFF);
697 static int adv7180_resume(struct i2c_client *client)
699 struct v4l2_subdev *sd = i2c_get_clientdata(client);
700 struct adv7180_state *state = to_state(sd);
703 ret = i2c_smbus_write_byte_data(client, ADV7180_PWR_MAN_REG,
707 ret = init_device(client, state);
714 MODULE_DEVICE_TABLE(i2c, adv7180_id);
716 static struct i2c_driver adv7180_driver = {
718 .owner = THIS_MODULE,
721 .probe = adv7180_probe,
722 .remove = __devexit_p(adv7180_remove),
724 .suspend = adv7180_suspend,
725 .resume = adv7180_resume,
727 .id_table = adv7180_id,
730 module_i2c_driver(adv7180_driver);
732 MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
733 MODULE_AUTHOR("Mocean Laboratories");
734 MODULE_LICENSE("GPL v2");