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| author | Randall Spangler <rspangler@chromium.org> | 2012-02-21 12:51:42 -0800 |
|---|---|---|
| committer | Randall Spangler <rspangler@chromium.org> | 2012-02-21 12:59:44 -0800 |
| commit | 12b12e53346a6c80e33e1f88beb620b01efac2d9 (patch) | |
| tree | 7c0f7ae780a57e83d0c057cd82df49ebb1a14025 /chip/lm4/pwm.c | |
| parent | 63c9ebaac95d0d95cae132533ca30708ea87a0f7 (diff) | |
| download | chrome-ec-12b12e53346a6c80e33e1f88beb620b01efac2d9.tar.gz | |
Add EC host commands for keyboard backlight
Signed-off-by: Randall Spangler <rspangler@chromium.org>
BUG=chrome-os-partner:8128
TEST='ectool setkblight X && ectool getkblight' for X=1, 20, 99, 100, 0
Change-Id: I540fd2d05f4caa110cd1dc45e9b5184fc8777a06
Diffstat (limited to 'chip/lm4/pwm.c')
| -rw-r--r-- | chip/lm4/pwm.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/chip/lm4/pwm.c b/chip/lm4/pwm.c index d877e721ab..bcb19f49a0 100644 --- a/chip/lm4/pwm.c +++ b/chip/lm4/pwm.c @@ -64,9 +64,16 @@ int pwm_set_fan_target_rpm(int rpm) } +int pwm_get_keyboard_backlight(void) +{ + return ((LM4_FAN_FANCMD(FAN_CH_KBLIGHT) >> 16) * 100 + + MAX_PWM / 2) / MAX_PWM; +} + + int pwm_set_keyboard_backlight(int percent) { - LM4_FAN_FANCMD(FAN_CH_KBLIGHT) = ((percent * MAX_PWM) / 100) << 16; + LM4_FAN_FANCMD(FAN_CH_KBLIGHT) = ((percent * MAX_PWM + 50) / 100) << 16; return EC_SUCCESS; } @@ -164,8 +171,9 @@ static int command_kblight(int argc, char **argv) int i; if (argc < 2) { - uart_puts("Usage: kblight <percent>\n"); - return EC_ERROR_UNKNOWN; + uart_printf("Keyboard backlight is at %d%%\n", + pwm_get_keyboard_backlight()); + return EC_SUCCESS; } i = strtoi(argv[1], &e, 0); @@ -182,14 +190,6 @@ static int command_kblight(int argc, char **argv) } DECLARE_CONSOLE_COMMAND(kblight, command_kblight); -static const struct console_command console_commands[] = { - {"fanduty", command_fan_duty}, - {"faninfo", command_fan_info}, - {"fanset", command_fan_set}, - {"kblight", command_kblight}, -}; - - /*****************************************************************************/ /* Initialization */ |