[Intel-gfx] [PATCH 1/2] drm/i915: extract backlight minimum brightness from VBT

[Jesse Barnes]

On Tue, 24 Jun 2014 18:27:39 +0300
Jani Nikula <jani.nikula at intel.com> wrote:

> Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.h   | 1 +
>  drivers/gpu/drm/i915/intel_bios.c | 3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 8cea59649ef2..81e8d17063d5 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1230,6 +1230,7 @@ struct intel_vbt_data {
>  		u16 pwm_freq_hz;
>  		bool present;
>  		bool active_low_pwm;
> +		u8 min_brightness;	/* min_brightness/255 of max */
>  	} backlight;
>  
>  	/* MIPI DSI */
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index 827498e081df..608ed302f24d 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -336,11 +336,12 @@ parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
>  
>  	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;
>  	DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, "
>  		      "active %s, min brightness %u, level %u\n",
>  		      dev_priv->vbt.backlight.pwm_freq_hz,
>  		      dev_priv->vbt.backlight.active_low_pwm ? "low" : "high",
> -		      entry->min_brightness,
> +		      dev_priv->vbt.backlight.min_brightness,
>  		      backlight_data->level[panel_type]);
>  }
>  

Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>