diff options
| author |   Deepak M <m.deepak@intel.com> | 2016-04-26 16:14:24 +0300 |
|---|---|---|
| committer |   Jani Nikula <jani.nikula@intel.com> | 2016-05-02 16:17:38 +0300 |
| commit | 9a41e17de38e8528816598e728f784da68df17f7 (patch) | |
| tree | cef3be2f733841693b5f559c259fc9e6db6668bc /drivers/gpu/drm/i915/intel_bios.c | |
| parent | drm/i915: Add rpm get/put in oom and vmap notifier (diff) | |
| download | linux-dev-9a41e17de38e8528816598e728f784da68df17f7.tar.xz linux-dev-9a41e17de38e8528816598e728f784da68df17f7.zip | |
drm/i915: Parse LFP brightness control field in VBT
These fields in VBT indicates the PWM source which
is used and also the controller number.
v2 by Jani: check for out of bounds access, some renames, change default
type, etc.
v3 by Jani: s/INTEL_BACKLIGHT_CABC/INTEL_BACKLIGHT_DSI_DCS/
Signed-off-by: Deepak M <m.deepak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/eee2f7b683a081f006a7df1ddad9b20fbf53c48c.1461676337.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index dbbd59171722..81518116e00d 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -318,6 +318,15 @@ parse_lfp_backlight(struct drm_i915_private *dev_priv, return; } + dev_priv->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI; + if (bdb->version >= 191 && + get_blocksize(backlight_data) >= sizeof(*backlight_data)) { + const struct bdb_lfp_backlight_control_method *method; + + method = &backlight_data->backlight_control[panel_type]; + dev_priv->vbt.backlight.type = method->type; + } + dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; dev_priv->vbt.backlight.min_brightness = entry->min_brightness; |