diff options
| author | Puthikorn Voravootivat <puthik@chromium.org> | 2017-05-23 15:38:04 -0700 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-05-26 15:20:51 +0300 |
| commit | 77a494a7250ce082def81a5fa67c24789ecabe0b (patch) | |
| tree | 4c9ad7ec657f0b8303eea958fcc8a866375d7c80 /include/drm/drm_dp_helper.h | |
| parent | 49d191dd5d41ca3a6b447075d50ce5f287171f71 (diff) | |
| download | lwn-77a494a7250ce082def81a5fa67c24789ecabe0b.tar.gz lwn-77a494a7250ce082def81a5fa67c24789ecabe0b.zip | |
drm: Add definition for eDP backlight frequency
This patch adds the following definition
- Bit mask for EDP_PWMGEN_BIT_COUNT and min/max cap
register which only use bit 0:4
- Base frequency (27 MHz) for backlight PWM frequency
generator.
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170523223805.46372-5-puthik@chromium.org
Diffstat (limited to 'include/drm/drm_dp_helper.h')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index c0bd0d7651a9..23837f5dc5e1 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -572,10 +572,12 @@ #define DP_EDP_PWMGEN_BIT_COUNT 0x724 #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN 0x725 #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX 0x726 +# define DP_EDP_PWMGEN_BIT_COUNT_MASK (0x1f << 0) #define DP_EDP_BACKLIGHT_CONTROL_STATUS 0x727 #define DP_EDP_BACKLIGHT_FREQ_SET 0x728 +# define DP_EDP_BACKLIGHT_FREQ_BASE_KHZ 27000 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB 0x72a #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID 0x72b |