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| author | Daisuke Nojiri <dnojiri@chromium.org> | 2018-04-20 14:29:13 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-04-27 21:27:29 -0700 |
| commit | 3fbf2c47ae847112044c529bb54655841e53014a (patch) | |
| tree | c362366276e9163595952460b59de2512d1ca0ca /board/nami/gpio.inc | |
| parent | 102ad072922da1c510446fb3bb4d14c5eb815cec (diff) | |
| download | chrome-ec-3fbf2c47ae847112044c529bb54655841e53014a.tar.gz | |
Nami: Add keyboard backlight control
This implements keyboard backlight control for Nami, Vayne, Pantheon,
and Sona. On Sona, GPIOC4 is directly connected to the LED strings.
Thus, we use PWM to control the brightness. On the other variants,
the LED strings are connected to LM3509. Thus, we control the brightness
through I2C.
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
BUG=b:76182445,b:78141647
BRANCH=none
TEST=Verify keyboard backlight brightness changes on Nami.
Verify keyboard backlight turns on/off on lid close/open, sleep/suspend.
on Nami. Verify 'kblight' returns x set by 'kblight x' on Sona.
Change-Id: I400ea2bc7a58a3cc57eb959179d2139a99ac176c
Reviewed-on: https://chromium-review.googlesource.com/1022833
Commit-Ready: Daisuke Nojiri <dnojiri@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'board/nami/gpio.inc')
| -rw-r--r-- | board/nami/gpio.inc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/board/nami/gpio.inc b/board/nami/gpio.inc index ce69db4da9..c12db6dceb 100644 --- a/board/nami/gpio.inc +++ b/board/nami/gpio.inc @@ -109,6 +109,7 @@ ALTERNATE(PIN_MASK(B, 0x40), 1, MODULE_PWM, 0) /* GPIOB6 PWM1 Fan control */ ALTERNATE(PIN_MASK(8, 0x01), 1, MODULE_PWM, 0) /* GPIO80 PWM3 LED White */ ALTERNATE(PIN_MASK(B, 0x80), 1, MODULE_PWM, 0) /* GPIOB7 PWM5 LED Yellow */ ALTERNATE(PIN_MASK(A, 0x40), 1, MODULE_PWM, 0) /* GPIOA6 TA2 */ +ALTERNATE(PIN_MASK(C, 0x10), 1, MODULE_PWM, 0) /* GPIOC4 PWM2 */ /* Keyboard pins */ #define GPIO_KB_INPUT (GPIO_INPUT | GPIO_PULL_UP) |