diff options
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-input.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-input.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c index ebc538730e0..e0acc92f0df 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -480,6 +480,7 @@ static void em28xx_query_buttons(struct work_struct *work) u8 i, j; int regval; bool is_pressed, was_pressed; + const struct em28xx_led *led; /* Poll and evaluate all addresses */ for (i = 0; i < dev->num_button_polling_addresses; i++) { @@ -524,6 +525,15 @@ static void em28xx_query_buttons(struct work_struct *work) input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, 0); break; + case EM28XX_BUTTON_ILLUMINATION: + led = em28xx_find_led(dev, + EM28XX_LED_ILLUMINATION); + /* Switch illumination LED on/off */ + if (led) + em28xx_toggle_reg_bits(dev, + led->gpio_reg, + led->gpio_mask); + break; default: WARN_ONCE(1, "BUG: unhandled button role."); } @@ -600,10 +610,17 @@ static void em28xx_init_buttons(struct em28xx *dev) WARN_ONCE(1, "BUG: maximum number of button polling addresses exceeded."); addr_new = 0; } - /* Register input device (if needed) */ + /* Button role specific checks and actions */ if (button->role == EM28XX_BUTTON_SNAPSHOT) { + /* Register input device */ if (em28xx_register_snapshot_button(dev) < 0) addr_new = 0; + } else if (button->role == EM28XX_BUTTON_ILLUMINATION) { + /* Check sanity */ + if (!em28xx_find_led(dev, EM28XX_LED_ILLUMINATION)) { + em28xx_errdev("BUG: illumination button defined, but no illumination LED.\n"); + addr_new = 0; + } } /* Add read address to list of polling addresses */ if (addr_new) { |