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[media] em28xx: add support for DVB monitor led

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Some devices have a LED to indicate when DVB capture started.
Add support for it.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2014-03-04 12:33:45 -03:00
parent 02bc1f5574
commit 54e925498c
2 changed files with 15 additions and 12 deletions
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26
drivers/media/usb/em28xx/em28xx-core.c
View File

@ -619,6 +619,7 @@ EXPORT_SYMBOL_GPL(em28xx_find_led);
int em28xx_capture_start(struct em28xx *dev, int start)
{
int rc;
const struct em28xx_led *led = NULL;
if (dev->chip_id == CHIP_ID_EM2874 ||
dev->chip_id == CHIP_ID_EM2884 ||
@ -643,6 +644,8 @@ int em28xx_capture_start(struct em28xx *dev, int start)
/* Enable video capture */
rc = em28xx_write_reg(dev, 0x48, 0x00);
if (rc < 0)
return rc;
if (dev->mode == EM28XX_ANALOG_MODE)
rc = em28xx_write_reg(dev,
@ -650,6 +653,8 @@ int em28xx_capture_start(struct em28xx *dev, int start)
else
rc = em28xx_write_reg(dev,
EM28XX_R12_VINENABLE, 0x37);
if (rc < 0)
return rc;
msleep(6);
} else {
@ -658,19 +663,16 @@ int em28xx_capture_start(struct em28xx *dev, int start)
}
}
if (rc < 0)
return rc;
/* Switch (explicitly controlled) analog capturing LED on/off */
if (dev->mode == EM28XX_ANALOG_MODE) {
const struct em28xx_led *led;
if (dev->mode == EM28XX_ANALOG_MODE)
led = em28xx_find_led(dev, EM28XX_LED_ANALOG_CAPTURING);
if (led)
em28xx_write_reg_bits(dev, led->gpio_reg,
(!start ^ led->inverted) ?
~led->gpio_mask : led->gpio_mask,
led->gpio_mask);
}
else
led = em28xx_find_led(dev, EM28XX_LED_DIGITAL_CAPTURING);
if (led)
em28xx_write_reg_bits(dev, led->gpio_reg,
(!start ^ led->inverted) ?
~led->gpio_mask : led->gpio_mask,
led->gpio_mask);
return rc;
}

1
drivers/media/usb/em28xx/em28xx.h
View File

@ -401,6 +401,7 @@ enum em28xx_adecoder {
enum em28xx_led_role {
EM28XX_LED_ANALOG_CAPTURING = 0,
EM28XX_LED_DIGITAL_CAPTURING,
EM28XX_LED_ILLUMINATION,
EM28XX_NUM_LED_ROLES, /* must be the last */
};