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This is very quiet release for LEDs, pca963 got blinking support and 

that's pretty much it.
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Merge tag 'leds-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Pull LED updates from Pavel Machek:
 "This is very quiet release for LEDs, pca963 got blinking support and
  that's pretty much it"

* tag 'leds-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
  leds: pca963: fix misleading indentation
  dt-bindings: leds: Document mmc trigger
  leds: pca963x: fix blink with hw acceleration
This commit is contained in:
Linus Torvalds 2022-10-14 13:14:03 -07:00
parent bd9a3dba18 4d1632151b
commit 5964c927b4
2 changed files with 41 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
Documentation/devicetree/bindings/leds/common.yaml
View File

@ -79,24 +79,27 @@ properties:
the LED.
$ref: /schemas/types.yaml#/definitions/string
enum:
# LED will act as a back-light, controlled by the framebuffer system
- backlight
# LED will turn on (but for leds-gpio see "default-state" property in
# Documentation/devicetree/bindings/leds/leds-gpio.yaml)
- default-on
# LED "double" flashes at a load average based rate
- heartbeat
# LED indicates disk activity
- disk-activity
# LED indicates IDE disk activity (deprecated), in new implementations
# use "disk-activity"
- ide-disk
# LED flashes at a fixed, configurable rate
- timer
# LED alters the brightness for the specified duration with one software
# timer (requires "led-pattern" property)
- pattern
oneOf:
- enum:
# LED will act as a back-light, controlled by the framebuffer system
- backlight
# LED will turn on (but for leds-gpio see "default-state" property in
# Documentation/devicetree/bindings/leds/leds-gpio.yaml)
- default-on
# LED "double" flashes at a load average based rate
- heartbeat
# LED indicates disk activity
- disk-activity
# LED indicates IDE disk activity (deprecated), in new implementations
# use "disk-activity"
- ide-disk
# LED flashes at a fixed, configurable rate
- timer
# LED alters the brightness for the specified duration with one software
# timer (requires "led-pattern" property)
- pattern
# LED is triggered by SD/MMC activity
- pattern: "^mmc[0-9]+$"
led-pattern:
description: |

22
drivers/leds/leds-pca963x.c
View File

@ -101,6 +101,7 @@ struct pca963x_led {
struct pca963x *chip;
struct led_classdev led_cdev;
int led_num; /* 0 .. 15 potentially */
bool blinking;
u8 gdc;
u8 gfrq;
};
@ -129,12 +130,21 @@ static int pca963x_brightness(struct pca963x_led *led,
switch (brightness) {
case LED_FULL:
val = (ledout & ~mask) | (PCA963X_LED_ON << shift);
if (led->blinking) {
val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
ret = i2c_smbus_write_byte_data(client,
PCA963X_PWM_BASE +
led->led_num,
LED_FULL);
} else {
val = (ledout & ~mask) | (PCA963X_LED_ON << shift);
}
ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
break;
case LED_OFF:
val = ledout & ~mask;
ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
led->blinking = false;
break;
default:
ret = i2c_smbus_write_byte_data(client,
@ -144,7 +154,11 @@ static int pca963x_brightness(struct pca963x_led *led,
if (ret < 0)
return ret;
val = (ledout & ~mask) | (PCA963X_LED_PWM << shift);
if (led->blinking)
val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
else
val = (ledout & ~mask) | (PCA963X_LED_PWM << shift);
ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
break;
}
@ -181,6 +195,7 @@ static void pca963x_blink(struct pca963x_led *led)
}
mutex_unlock(&led->chip->mutex);
led->blinking = true;
}
static int pca963x_power_state(struct pca963x_led *led)
@ -275,6 +290,8 @@ static int pca963x_blink_set(struct led_classdev *led_cdev,
led->gfrq = gfrq;
pca963x_blink(led);
led->led_cdev.brightness = LED_FULL;
pca963x_led_set(led_cdev, LED_FULL);
*delay_on = time_on;
*delay_off = time_off;
@ -337,6 +354,7 @@ static int pca963x_register_leds(struct i2c_client *client,
led->led_cdev.brightness_set_blocking = pca963x_led_set;
if (hw_blink)
led->led_cdev.blink_set = pca963x_blink_set;
led->blinking = false;
init_data.fwnode = child;
/* for backwards compatibility */