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-ctrls.h>
30 #include <media/v4l2-chip-ident.h>
31 #include <linux/mutex.h>
33 #define ADV7180_INPUT_CONTROL_REG 0x00
34 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00
35 #define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
36 #define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM 0x20
37 #define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM 0x30
38 #define ADV7180_INPUT_CONTROL_NTSC_J 0x40
39 #define ADV7180_INPUT_CONTROL_NTSC_M 0x50
40 #define ADV7180_INPUT_CONTROL_PAL60 0x60
41 #define ADV7180_INPUT_CONTROL_NTSC_443 0x70
42 #define ADV7180_INPUT_CONTROL_PAL_BG 0x80
43 #define ADV7180_INPUT_CONTROL_PAL_N 0x90
44 #define ADV7180_INPUT_CONTROL_PAL_M 0xa0
45 #define ADV7180_INPUT_CONTROL_PAL_M_PED 0xb0
46 #define ADV7180_INPUT_CONTROL_PAL_COMB_N 0xc0
47 #define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED 0xd0
48 #define ADV7180_INPUT_CONTROL_PAL_SECAM 0xe0
49 #define ADV7180_INPUT_CONTROL_PAL_SECAM_PED 0xf0
50 #define ADV7180_INPUT_CONTROL_INSEL_MASK 0x0f
52 #define ADV7180_EXTENDED_OUTPUT_CONTROL_REG 0x04
53 #define ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS 0xC5
55 #define ADV7180_AUTODETECT_ENABLE_REG 0x07
56 #define ADV7180_AUTODETECT_DEFAULT 0x7f
58 #define ADV7180_CON_REG 0x08 /*Unsigned */
59 #define ADV7180_CON_MIN 0
60 #define ADV7180_CON_DEF 128
61 #define ADV7180_CON_MAX 255
63 #define ADV7180_BRI_REG 0x0a /*Signed */
64 #define ADV7180_BRI_MIN -128
65 #define ADV7180_BRI_DEF 0
66 #define ADV7180_BRI_MAX 127
68 #define ADV7180_HUE_REG 0x0b /*Signed, inverted */
69 #define ADV7180_HUE_MIN -127
70 #define ADV7180_HUE_DEF 0
71 #define ADV7180_HUE_MAX 128
73 #define ADV7180_ADI_CTRL_REG 0x0e
74 #define ADV7180_ADI_CTRL_IRQ_SPACE 0x20
76 #define ADV7180_PWR_MAN_REG 0x0f
77 #define ADV7180_PWR_MAN_ON 0x04
78 #define ADV7180_PWR_MAN_OFF 0x24
79 #define ADV7180_PWR_MAN_RES 0x80
81 #define ADV7180_STATUS1_REG 0x10
82 #define ADV7180_STATUS1_IN_LOCK 0x01
83 #define ADV7180_STATUS1_AUTOD_MASK 0x70
84 #define ADV7180_STATUS1_AUTOD_NTSM_M_J 0x00
85 #define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
86 #define ADV7180_STATUS1_AUTOD_PAL_M 0x20
87 #define ADV7180_STATUS1_AUTOD_PAL_60 0x30
88 #define ADV7180_STATUS1_AUTOD_PAL_B_G 0x40
89 #define ADV7180_STATUS1_AUTOD_SECAM 0x50
90 #define ADV7180_STATUS1_AUTOD_PAL_COMB 0x60
91 #define ADV7180_STATUS1_AUTOD_SECAM_525 0x70
93 #define ADV7180_IDENT_REG 0x11
94 #define ADV7180_ID_7180 0x18
96 #define ADV7180_ICONF1_ADI 0x40
97 #define ADV7180_ICONF1_ACTIVE_LOW 0x01
98 #define ADV7180_ICONF1_PSYNC_ONLY 0x10
99 #define ADV7180_ICONF1_ACTIVE_TO_CLR 0xC0
101 #define ADV7180_SD_SAT_CB_REG 0xe3 /*Unsigned */
102 #define ADV7180_SD_SAT_CR_REG 0xe4 /*Unsigned */
103 #define ADV7180_SAT_MIN 0
104 #define ADV7180_SAT_DEF 128
105 #define ADV7180_SAT_MAX 255
107 #define ADV7180_IRQ1_LOCK 0x01
108 #define ADV7180_IRQ1_UNLOCK 0x02
109 #define ADV7180_ISR1_ADI 0x42
110 #define ADV7180_ICR1_ADI 0x43
111 #define ADV7180_IMR1_ADI 0x44
112 #define ADV7180_IMR2_ADI 0x48
113 #define ADV7180_IRQ3_AD_CHANGE 0x08
114 #define ADV7180_ISR3_ADI 0x4A
115 #define ADV7180_ICR3_ADI 0x4B
116 #define ADV7180_IMR3_ADI 0x4C
117 #define ADV7180_IMR4_ADI 0x50
119 #define ADV7180_NTSC_V_BIT_END_REG 0xE6
120 #define ADV7180_NTSC_V_BIT_END_MANUAL_NVEND 0x4F
122 struct adv7180_state {
123 struct v4l2_ctrl_handler ctrl_hdl;
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;
132 #define to_adv7180_sd(_ctrl) (&container_of(_ctrl->handler, \
133 struct adv7180_state, \
136 static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
138 switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
139 case ADV7180_STATUS1_AUTOD_NTSM_M_J:
140 return V4L2_STD_NTSC;
141 case ADV7180_STATUS1_AUTOD_NTSC_4_43:
142 return V4L2_STD_NTSC_443;
143 case ADV7180_STATUS1_AUTOD_PAL_M:
144 return V4L2_STD_PAL_M;
145 case ADV7180_STATUS1_AUTOD_PAL_60:
146 return V4L2_STD_PAL_60;
147 case ADV7180_STATUS1_AUTOD_PAL_B_G:
149 case ADV7180_STATUS1_AUTOD_SECAM:
150 return V4L2_STD_SECAM;
151 case ADV7180_STATUS1_AUTOD_PAL_COMB:
152 return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
153 case ADV7180_STATUS1_AUTOD_SECAM_525:
154 return V4L2_STD_SECAM;
156 return V4L2_STD_UNKNOWN;
160 static int v4l2_std_to_adv7180(v4l2_std_id std)
162 if (std == V4L2_STD_PAL_60)
163 return ADV7180_INPUT_CONTROL_PAL60;
164 if (std == V4L2_STD_NTSC_443)
165 return ADV7180_INPUT_CONTROL_NTSC_443;
166 if (std == V4L2_STD_PAL_N)
167 return ADV7180_INPUT_CONTROL_PAL_N;
168 if (std == V4L2_STD_PAL_M)
169 return ADV7180_INPUT_CONTROL_PAL_M;
170 if (std == V4L2_STD_PAL_Nc)
171 return ADV7180_INPUT_CONTROL_PAL_COMB_N;
173 if (std & V4L2_STD_PAL)
174 return ADV7180_INPUT_CONTROL_PAL_BG;
175 if (std & V4L2_STD_NTSC)
176 return ADV7180_INPUT_CONTROL_NTSC_M;
177 if (std & V4L2_STD_SECAM)
178 return ADV7180_INPUT_CONTROL_PAL_SECAM;
183 static u32 adv7180_status_to_v4l2(u8 status1)
185 if (!(status1 & ADV7180_STATUS1_IN_LOCK))
186 return V4L2_IN_ST_NO_SIGNAL;
191 static int __adv7180_status(struct i2c_client *client, u32 *status,
194 int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);
200 *status = adv7180_status_to_v4l2(status1);
202 *std = adv7180_std_to_v4l2(status1);
207 static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
209 return container_of(sd, struct adv7180_state, sd);
212 static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
214 struct adv7180_state *state = to_state(sd);
215 int err = mutex_lock_interruptible(&state->mutex);
219 /* when we are interrupt driven we know the state */
220 if (!state->autodetect || state->irq > 0)
221 *std = state->curr_norm;
223 err = __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);
225 mutex_unlock(&state->mutex);
229 static int adv7180_s_routing(struct v4l2_subdev *sd, u32 input,
230 u32 output, u32 config)
232 struct adv7180_state *state = to_state(sd);
233 int ret = mutex_lock_interruptible(&state->mutex);
234 struct i2c_client *client = v4l2_get_subdevdata(sd);
239 /* We cannot discriminate between LQFP and 40-pin LFCSP, so accept
240 * all inputs and let the card driver take care of validation
242 if ((input & ADV7180_INPUT_CONTROL_INSEL_MASK) != input)
245 ret = i2c_smbus_read_byte_data(client, ADV7180_INPUT_CONTROL_REG);
250 ret &= ~ADV7180_INPUT_CONTROL_INSEL_MASK;
251 ret = i2c_smbus_write_byte_data(client,
252 ADV7180_INPUT_CONTROL_REG, ret | input);
253 state->input = input;
255 mutex_unlock(&state->mutex);
259 static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
261 struct adv7180_state *state = to_state(sd);
262 int ret = mutex_lock_interruptible(&state->mutex);
266 ret = __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
267 mutex_unlock(&state->mutex);
271 static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
272 struct v4l2_dbg_chip_ident *chip)
274 struct i2c_client *client = v4l2_get_subdevdata(sd);
276 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0);
279 static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
281 struct adv7180_state *state = to_state(sd);
282 struct i2c_client *client = v4l2_get_subdevdata(sd);
283 int ret = mutex_lock_interruptible(&state->mutex);
287 /* all standards -> autodetect */
288 if (std == V4L2_STD_ALL) {
290 i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
291 ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
296 __adv7180_status(client, NULL, &state->curr_norm);
297 state->autodetect = true;
299 ret = v4l2_std_to_adv7180(std);
303 ret = i2c_smbus_write_byte_data(client,
304 ADV7180_INPUT_CONTROL_REG,
309 state->curr_norm = std;
310 state->autodetect = false;
314 mutex_unlock(&state->mutex);
318 static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl)
320 struct v4l2_subdev *sd = to_adv7180_sd(ctrl);
321 struct adv7180_state *state = to_state(sd);
322 struct i2c_client *client = v4l2_get_subdevdata(sd);
323 int ret = mutex_lock_interruptible(&state->mutex);
330 case V4L2_CID_BRIGHTNESS:
331 ret = i2c_smbus_write_byte_data(client, ADV7180_BRI_REG, val);
334 /*Hue is inverted according to HSL chart */
335 ret = i2c_smbus_write_byte_data(client, ADV7180_HUE_REG, -val);
337 case V4L2_CID_CONTRAST:
338 ret = i2c_smbus_write_byte_data(client, ADV7180_CON_REG, val);
340 case V4L2_CID_SATURATION:
342 *This could be V4L2_CID_BLUE_BALANCE/V4L2_CID_RED_BALANCE
343 *Let's not confuse the user, everybody understands saturation
345 ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CB_REG,
349 ret = i2c_smbus_write_byte_data(client, ADV7180_SD_SAT_CR_REG,
356 mutex_unlock(&state->mutex);
360 static const struct v4l2_ctrl_ops adv7180_ctrl_ops = {
361 .s_ctrl = adv7180_s_ctrl,
364 static int adv7180_init_controls(struct adv7180_state *state)
366 v4l2_ctrl_handler_init(&state->ctrl_hdl, 4);
368 v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
369 V4L2_CID_BRIGHTNESS, ADV7180_BRI_MIN,
370 ADV7180_BRI_MAX, 1, ADV7180_BRI_DEF);
371 v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
372 V4L2_CID_CONTRAST, ADV7180_CON_MIN,
373 ADV7180_CON_MAX, 1, ADV7180_CON_DEF);
374 v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
375 V4L2_CID_SATURATION, ADV7180_SAT_MIN,
376 ADV7180_SAT_MAX, 1, ADV7180_SAT_DEF);
377 v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
378 V4L2_CID_HUE, ADV7180_HUE_MIN,
379 ADV7180_HUE_MAX, 1, ADV7180_HUE_DEF);
380 state->sd.ctrl_handler = &state->ctrl_hdl;
381 if (state->ctrl_hdl.error) {
382 int err = state->ctrl_hdl.error;
384 v4l2_ctrl_handler_free(&state->ctrl_hdl);
387 v4l2_ctrl_handler_setup(&state->ctrl_hdl);
391 static void adv7180_exit_controls(struct adv7180_state *state)
393 v4l2_ctrl_handler_free(&state->ctrl_hdl);
396 static const struct v4l2_subdev_video_ops adv7180_video_ops = {
397 .querystd = adv7180_querystd,
398 .g_input_status = adv7180_g_input_status,
399 .s_routing = adv7180_s_routing,
402 static const struct v4l2_subdev_core_ops adv7180_core_ops = {
403 .g_chip_ident = adv7180_g_chip_ident,
404 .s_std = adv7180_s_std,
405 .queryctrl = v4l2_subdev_queryctrl,
406 .g_ctrl = v4l2_subdev_g_ctrl,
407 .s_ctrl = v4l2_subdev_s_ctrl,
410 static const struct v4l2_subdev_ops adv7180_ops = {
411 .core = &adv7180_core_ops,
412 .video = &adv7180_video_ops,
415 static void adv7180_work(struct work_struct *work)
417 struct adv7180_state *state = container_of(work, struct adv7180_state,
419 struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
422 mutex_lock(&state->mutex);
423 i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG,
424 ADV7180_ADI_CTRL_IRQ_SPACE);
425 isr3 = i2c_smbus_read_byte_data(client, ADV7180_ISR3_ADI);
427 i2c_smbus_write_byte_data(client, ADV7180_ICR3_ADI, isr3);
428 i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, 0);
430 if (isr3 & ADV7180_IRQ3_AD_CHANGE && state->autodetect)
431 __adv7180_status(client, NULL, &state->curr_norm);
432 mutex_unlock(&state->mutex);
434 enable_irq(state->irq);
437 static irqreturn_t adv7180_irq(int irq, void *devid)
439 struct adv7180_state *state = devid;
441 schedule_work(&state->work);
443 disable_irq_nosync(state->irq);
448 static int init_device(struct i2c_client *client, struct adv7180_state *state)
452 /* Initialize adv7180 */
453 /* Enable autodetection */
454 if (state->autodetect) {
456 i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
457 ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM
463 i2c_smbus_write_byte_data(client,
464 ADV7180_AUTODETECT_ENABLE_REG,
465 ADV7180_AUTODETECT_DEFAULT);
469 ret = v4l2_std_to_adv7180(state->curr_norm);
474 i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
480 /* ITU-R BT.656-4 compatible */
481 ret = i2c_smbus_write_byte_data(client,
482 ADV7180_EXTENDED_OUTPUT_CONTROL_REG,
483 ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS);
487 /* Manually set V bit end position in NTSC mode */
488 ret = i2c_smbus_write_byte_data(client,
489 ADV7180_NTSC_V_BIT_END_REG,
490 ADV7180_NTSC_V_BIT_END_MANUAL_NVEND);
494 /* read current norm */
495 __adv7180_status(client, NULL, &state->curr_norm);
497 /* register for interrupts */
498 if (state->irq > 0) {
499 ret = request_irq(state->irq, adv7180_irq, 0, KBUILD_MODNAME,
504 ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG,
505 ADV7180_ADI_CTRL_IRQ_SPACE);
509 /* config the Interrupt pin to be active low */
510 ret = i2c_smbus_write_byte_data(client, ADV7180_ICONF1_ADI,
511 ADV7180_ICONF1_ACTIVE_LOW |
512 ADV7180_ICONF1_PSYNC_ONLY);
516 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR1_ADI, 0);
520 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR2_ADI, 0);
524 /* enable AD change interrupts interrupts */
525 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR3_ADI,
526 ADV7180_IRQ3_AD_CHANGE);
530 ret = i2c_smbus_write_byte_data(client, ADV7180_IMR4_ADI, 0);
534 ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG,
543 static __devinit int adv7180_probe(struct i2c_client *client,
544 const struct i2c_device_id *id)
546 struct adv7180_state *state;
547 struct v4l2_subdev *sd;
550 /* Check if the adapter supports the needed features */
551 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
554 v4l_info(client, "chip found @ 0x%02x (%s)\n",
555 client->addr, client->adapter->name);
557 state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
563 state->irq = client->irq;
564 INIT_WORK(&state->work, adv7180_work);
565 mutex_init(&state->mutex);
566 state->autodetect = true;
569 v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
571 ret = adv7180_init_controls(state);
573 goto err_unreg_subdev;
574 ret = init_device(client, state);
580 adv7180_exit_controls(state);
582 mutex_destroy(&state->mutex);
583 v4l2_device_unregister_subdev(sd);
586 printk(KERN_ERR KBUILD_MODNAME ": Failed to probe: %d\n", ret);
590 static __devexit int adv7180_remove(struct i2c_client *client)
592 struct v4l2_subdev *sd = i2c_get_clientdata(client);
593 struct adv7180_state *state = to_state(sd);
595 if (state->irq > 0) {
596 free_irq(client->irq, state);
597 if (cancel_work_sync(&state->work)) {
599 * Work was pending, therefore we need to enable
600 * IRQ here to balance the disable_irq() done in the
603 enable_irq(state->irq);
607 mutex_destroy(&state->mutex);
608 v4l2_device_unregister_subdev(sd);
613 static const struct i2c_device_id adv7180_id[] = {
619 static int adv7180_suspend(struct i2c_client *client, pm_message_t state)
623 ret = i2c_smbus_write_byte_data(client, ADV7180_PWR_MAN_REG,
624 ADV7180_PWR_MAN_OFF);
630 static int adv7180_resume(struct i2c_client *client)
632 struct v4l2_subdev *sd = i2c_get_clientdata(client);
633 struct adv7180_state *state = to_state(sd);
636 ret = i2c_smbus_write_byte_data(client, ADV7180_PWR_MAN_REG,
640 ret = init_device(client, state);
647 MODULE_DEVICE_TABLE(i2c, adv7180_id);
649 static struct i2c_driver adv7180_driver = {
651 .owner = THIS_MODULE,
652 .name = KBUILD_MODNAME,
654 .probe = adv7180_probe,
655 .remove = __devexit_p(adv7180_remove),
657 .suspend = adv7180_suspend,
658 .resume = adv7180_resume,
660 .id_table = adv7180_id,
663 module_i2c_driver(adv7180_driver);
665 MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
666 MODULE_AUTHOR("Mocean Laboratories");
667 MODULE_LICENSE("GPL v2");