Re: [PATCH v5 1/3] drm/i915/dsi: add support for sequence block v3 gpio for VLV

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On Tue, Apr 26, 2016 at 01:27:39PM +0300, Jani Nikula wrote:
> Only support NC GPIOs for now, and assume the vlv gpio table only has NC
> GPIOs for now.

What is an "NC"? I think at least the commit message should explain that,
maybe even the code ...
-Daniel

> 
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> index c7281c391d0f..a1cc8533cff5 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> @@ -203,8 +203,8 @@ static void vlv_exec_gpio(struct drm_i915_private *dev_priv,
>  	map = &vlv_gpio_table[gpio_index];
>  
>  	if (dev_priv->vbt.dsi.seq_version >= 3) {
> -		DRM_DEBUG_KMS("GPIO element v3 not supported\n");
> -		return;
> +		/* XXX: this assumes vlv_gpio_table only has NC GPIOs. */
> +		port = IOSF_PORT_GPIO_NC;
>  	} else {
>  		if (gpio_source == 0) {
>  			port = IOSF_PORT_GPIO_NC;
> -- 
> 2.1.4
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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