linux-kernel - Re: [Intel-gfx] [PATCH v3 01/15] drm/i915/dsi: assume BXT gpio works for non-native GPIO

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Date:   Thu, 2 Nov 2023 19:10:09 +0200
From:   Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Jani Nikula <jani.nikula@...el.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...il.com>
Subject: Re: [Intel-gfx] [PATCH v3 01/15] drm/i915/dsi: assume BXT gpio works
 for non-native GPIO

On Thu, Nov 02, 2023 at 05:12:14PM +0200, Andy Shevchenko wrote:
> From: Jani Nikula <jani.nikula@...el.com>
> 
> Purely a guess. Drop the nop function.
> 
> Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Cc: Hans de Goede <hdegoede@...hat.com>
> Signed-off-by: Jani Nikula <jani.nikula@...el.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 10 +---------
>  1 file changed, 1 insertion(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
> index 24b2cbcfc1ef..b2c0cc11f8c1 100644
> --- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
> +++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
> @@ -372,14 +372,6 @@ static void bxt_exec_gpio(struct intel_connector *connector,
>  	gpiod_set_value(gpio_desc, value);
>  }
>  
> -static void icl_exec_gpio(struct intel_connector *connector,
> -			  u8 gpio_source, u8 gpio_index, bool value)
> -{
> -	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> -
> -	drm_dbg_kms(&dev_priv->drm, "Skipping ICL GPIO element execution\n");
> -}
> -
>  enum {
>  	MIPI_RESET_1 = 0,
>  	MIPI_AVDD_EN_1,
> @@ -491,7 +483,7 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
>  	if (native)
>  		icl_native_gpio_set_value(dev_priv, gpio_number, value);
>  	else if (DISPLAY_VER(dev_priv) >= 11)
> -		icl_exec_gpio(connector, gpio_source, gpio_index, value);
> +		bxt_exec_gpio(connector, gpio_source, gpio_index, value);

We could just drop this whole branch since we end up in bxt_exec_gpio()
in the end anyway. Or we drop the final else and make this one check for
DISPLAY_VER >=9.

>  	else if (IS_VALLEYVIEW(dev_priv))
>  		vlv_exec_gpio(connector, gpio_source, gpio_number, value);
>  	else if (IS_CHERRYVIEW(dev_priv))
> -- 
> 2.40.0.1.gaa8946217a0b

-- 
Ville Syrjälä
Intel