[Intel-gfx] [PATCH 6/8] drm/i915/icp: Add backlight Support for ICP

[Rodrigo Vivi]

On Fri, Jan 19, 2018 at 06:48:12PM +0000, Paulo Zanoni wrote:
> From: Anusha Srivatsa <anusha.srivatsa at intel.com>
> 
> ICP has two backlight controllers - similar to previous platforms like
> BXT -, but we only use one controller for now, so we can just reuse
> the CNP code.
> 
> v2: Remove the usage of ICP_SECOND_PPS_BACKLIGHT register.(Jani)
> Reuse CNP code since it is very similar.(Ville)
> v3 (from Paulo): Rebase.
> v4 (from Paulo): adjust commit message (James) and comment (Rodrigo).

thanks
x
Acked-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

> 
> Cc: Jani Nikula <jani.nikula at intel.com>
> Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
> Cc: James Ausmus <james.ausmus at intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_panel.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
> index fa6831f8c004..e702a6487aa9 100644
> --- a/drivers/gpu/drm/i915/intel_panel.c
> +++ b/drivers/gpu/drm/i915/intel_panel.c
> @@ -1719,9 +1719,9 @@ cnp_setup_backlight(struct intel_connector *connector, enum pipe unused)
>  	u32 pwm_ctl, val;
>  
>  	/*
> -	 * CNP has the BXT implementation of backlight, but with only
> -	 * one controller. Future platforms could have multiple controllers
> -	 * so let's make this extensible and prepared for the future.
> +	 * CNP has the BXT implementation of backlight, but with only one
> +	 * controller. TODO: ICP has multiple controllers but we only use
> +	 * controller 0 for now.
>  	 */
>  	panel->backlight.controller = 0;
>  
> @@ -1865,7 +1865,7 @@ intel_panel_init_backlight_funcs(struct intel_panel *panel)
>  		panel->backlight.set = bxt_set_backlight;
>  		panel->backlight.get = bxt_get_backlight;
>  		panel->backlight.hz_to_pwm = bxt_hz_to_pwm;
> -	} else if (HAS_PCH_CNP(dev_priv)) {
> +	} else if (HAS_PCH_CNP(dev_priv) || HAS_PCH_ICP(dev_priv)) {
>  		panel->backlight.setup = cnp_setup_backlight;
>  		panel->backlight.enable = cnp_enable_backlight;
>  		panel->backlight.disable = cnp_disable_backlight;
> -- 
> 2.14.3
>