In the upcoming change, the binding of audio mute / mic-mute LED controls will be switched with LED trigger. This patch is the last piece of preparation: adding the audio mute / mic-mute LED class devices to thinkpad_acpi driver.
Two devices, platform::mute and platform::micmute, will be added for controlling the mute LED and mic-mute LED, respectively. The new prefix "platform" is the suggestion by upstream for indicating the generic laptop attribute.
Also this selects CONFIG_LEDS_TRIGGERS and CONFIG_LEDS_TRIGGERS_AUDIO unconditionally. Strictly speaking, these aren't 100% mandatory, but leaving these manual selections would lead to a functional regression easily once after converting from the dynamic symbol binding to the LEDs trigger in a later patch.
Acked-by: Jacek Anaszewski jacek.anaszewski@gmail.com Acked-by: Pavel Machek pavel@ucw.cz Acked-by: Andy Shevchenko andy.shevchenko@gmail.com Acked-by: Henrique de Moraes Holschuh hmh@hmh.eng.br Acked-by: Pali Rohár pali.rohar@gmail.com Signed-off-by: Takashi Iwai tiwai@suse.de --- drivers/platform/x86/Kconfig | 2 + drivers/platform/x86/thinkpad_acpi.c | 57 +++++++++++++++++++++++++--- 2 files changed, 53 insertions(+), 6 deletions(-)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 9b9cc3cc33e9..87f70e8f4dd0 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -495,6 +495,8 @@ config THINKPAD_ACPI select NVRAM select NEW_LEDS select LEDS_CLASS + select LEDS_TRIGGERS + select LEDS_TRIGGER_AUDIO ---help--- This is a driver for the IBM and Lenovo ThinkPad laptops. It adds support for Fn-Fx key combinations, Bluetooth control, video diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index fde08a997557..3d2c1f5f22e2 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -9203,17 +9203,58 @@ int tpacpi_led_set(int whichled, bool on) } EXPORT_SYMBOL_GPL(tpacpi_led_set);
+static int tpacpi_led_mute_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + return tpacpi_led_set(TPACPI_LED_MUTE, brightness != LED_OFF); +} + +static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + return tpacpi_led_set(TPACPI_LED_MICMUTE, brightness != LED_OFF); +} + +static struct led_classdev mute_led_cdev[] = { + [TPACPI_LED_MUTE] = { + .name = "platform::mute", + .max_brightness = 1, + .brightness_set_blocking = tpacpi_led_mute_set, + .default_trigger = "audio-mute", + }, + [TPACPI_LED_MICMUTE] = { + .name = "platform::micmute", + .max_brightness = 1, + .brightness_set_blocking = tpacpi_led_micmute_set, + .default_trigger = "audio-micmute", + }, +}; + static int mute_led_init(struct ibm_init_struct *iibm) { + static enum led_audio types[] = { + [TPACPI_LED_MUTE] = LED_AUDIO_MUTE, + [TPACPI_LED_MICMUTE] = LED_AUDIO_MICMUTE, + }; acpi_handle temp; - int i; + int i, err;
for (i = 0; i < TPACPI_LED_MAX; i++) { struct tp_led_table *t = &led_tables[i]; - if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) - mute_led_on_off(t, false); - else + if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { t->state = -ENODEV; + continue; + } + + mute_led_cdev[i].brightness = ledtrig_audio_get(types[i]); + err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); + if (err < 0) { + while (i--) { + if (led_tables[i].state >= 0) + led_classdev_unregister(&mute_led_cdev[i]); + } + return err; + } } return 0; } @@ -9222,8 +9263,12 @@ static void mute_led_exit(void) { int i;
- for (i = 0; i < TPACPI_LED_MAX; i++) - tpacpi_led_set(i, false); + for (i = 0; i < TPACPI_LED_MAX; i++) { + if (led_tables[i].state >= 0) { + led_classdev_unregister(&mute_led_cdev[i]); + tpacpi_led_set(i, false); + } + } }
static void mute_led_resume(void)