linux-kernel - Re: [PATCH] Remove drm_display

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Date:   Tue, 28 Apr 2020 17:18:13 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     Michal Orzel <michalorzel.eng@...il.com>
Cc:     maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        tzimmermann@...e.de, airlied@...ux.ie, daniel@...ll.ch,
        jani.nikula@...ux.intel.com, joonas.lahtinen@...ux.intel.com,
        rodrigo.vivi@...el.com, ville.syrjala@...ux.intel.com,
        chris@...is-wilson.co.uk, jose.souza@...el.com,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org
Subject: Re: [PATCH] Remove drm_display_mode.hsync

On Mon, Apr 27, 2020 at 10:05:17AM +0200, Michal Orzel wrote:
> As suggested by the TODO list of DRM subsystem:
> -remove the member hsync of drm_display_mode
> -convert code using hsync member to use drm_mode_hsync()
> 
> Signed-off-by: Michal Orzel <michalorzel.eng@...il.com>

I think Ville has a bunch of patches doing this, we might have some
overlap :-/ Adding Ville.

Please sync with him and get either of these patches reviewed.

Thanks, Daniel

> ---
>  drivers/gpu/drm/drm_modes.c                  |  6 +-----
>  drivers/gpu/drm/i915/display/intel_display.c |  1 -
>  include/drm/drm_modes.h                      | 10 ----------
>  3 files changed, 1 insertion(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
> index d4d6451..0340079 100644
> --- a/drivers/gpu/drm/drm_modes.c
> +++ b/drivers/gpu/drm/drm_modes.c
> @@ -752,16 +752,12 @@ EXPORT_SYMBOL(drm_mode_set_name);
>   * @mode: mode
>   *
>   * Returns:
> - * @modes's hsync rate in kHz, rounded to the nearest integer. Calculates the
> - * value first if it is not yet set.
> + * @modes's hsync rate in kHz, rounded to the nearest integer.
>   */
>  int drm_mode_hsync(const struct drm_display_mode *mode)
>  {
>  	unsigned int calc_val;
>  
> -	if (mode->hsync)
> -		return mode->hsync;
> -
>  	if (mode->htotal <= 0)
>  		return 0;
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 3468466..ec7e943 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -8891,7 +8891,6 @@ void intel_mode_from_pipe_config(struct drm_display_mode *mode,
>  
>  	mode->clock = pipe_config->hw.adjusted_mode.crtc_clock;
>  
> -	mode->hsync = drm_mode_hsync(mode);
>  	mode->vrefresh = drm_mode_vrefresh(mode);
>  	drm_mode_set_name(mode);
>  }
> diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
> index 99134d4..7dab7f1 100644
> --- a/include/drm/drm_modes.h
> +++ b/include/drm/drm_modes.h
> @@ -391,16 +391,6 @@ struct drm_display_mode {
>  	int vrefresh;
>  
>  	/**
> -	 * @hsync:
> -	 *
> -	 * Horizontal refresh rate, for debug output in human readable form. Not
> -	 * used in a functional way.
> -	 *
> -	 * This value is in kHz.
> -	 */
> -	int hsync;
> -
> -	/**
>  	 * @picture_aspect_ratio:
>  	 *
>  	 * Field for setting the HDMI picture aspect ratio of a mode.
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch