diff options
| author | Avinash A <Avinash.a@stericsson.com> | 2011-11-10 11:54:28 +0530 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:01:12 +0200 |
| commit | dbeeede095da06655414a619175828303ed69b83 (patch) | |
| tree | b00205804ee3f940e0471ff51ddbf469a4894be7 /include | |
| parent | d6c1a5592d8ebfb7eb25293c5e60818e8b5c4a56 (diff) | |
leds: Pull the HWEN gpio low when brightness is 0
When the brightness is zero the HWEN gpio line should
be pulled low in order to achieve lowest power consumption
on LM3530
ST-Ericsson ID: 373161
ST-Ericsson Linux next: NA
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: I5fc0ad22022a9fcfc66683c59a2df27359c90371
Signed-off-by: Avinash A <Avinash.a@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/37248
Reviewed-by: Avinash A <avinash.a@stericsson.com>
Tested-by: Avinash A <avinash.a@stericsson.com>
Reviewed-by: QABUILD
Reviewed-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/led-lm3530.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/led-lm3530.h b/include/linux/led-lm3530.h index eeae6e74247..7b5ae415d10 100644 --- a/include/linux/led-lm3530.h +++ b/include/linux/led-lm3530.h @@ -58,6 +58,12 @@ #define LM3530_ALS_IMPD_700Ohm (0x0E) #define LM3530_ALS_IMPD_667Ohm (0x0F) +/* + * If lm3530 does not use a gpio for HWEN, set LM3530_NO_HWEN_GPIO + * for hw_en_gpio in lm3530_platform data member + */ +#define LM3530_NO_HWEN_GPIO -1 + enum lm3530_mode { LM3530_BL_MODE_MANUAL = 0, /* "man" */ LM3530_BL_MODE_ALS, /* "als" */ @@ -94,6 +100,7 @@ struct lm3530_pwm_data { * @als_vmax: als input voltage calibrated for min brightness in mV * @brt_val: brightness value (0-255) * @pwm_data: PWM control functions (only valid when the mode is PWM) + * @hw_en_gpio: GPIO line for LM3530 HWEN */ struct lm3530_platform_data { enum lm3530_mode mode; @@ -116,6 +123,8 @@ struct lm3530_platform_data { u8 brt_val; struct lm3530_pwm_data pwm_data; + + int hw_en_gpio; }; #endif /* _LINUX_LED_LM3530_H__ */ |