[Intel-gfx] [PATCH 1/5] drm/i915: don't recheck for invalid pipe bpp

[Rodrigo Vivi]

Feel free to use:
Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>

On Thu, Sep 20, 2012 at 6:36 PM, Paulo Zanoni <przanoni at gmail.com> wrote:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
>
> As noticed by Daniel Vetter, intel_pipe_choose_bpp_dither should
> already check for invalid bpp values and set a valid value, so remove
> the recheck inside ironlake_crtc_mode_set and also replace a "default"
> switch case inside ironlake_set_pipeconf with a BUG().
>
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c |   15 +++------------
>  1 file changed, 3 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 947c97d..eb8248b 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4624,8 +4624,8 @@ static void ironlake_set_pipeconf(struct drm_crtc *crtc,
>                 val |= PIPE_12BPC;
>                 break;
>         default:
> -               val |= PIPE_8BPC;
> -               break;
> +               /* Case prevented by intel_choose_pipe_bpp_dither. */
> +               BUG();
>         }
>
>         val &= ~(PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_MASK);
> @@ -4726,7 +4726,6 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
>         struct fdi_m_n m_n = {0};
>         u32 temp;
>         int target_clock, pixel_multiplier, lane, link_bw, factor;
> -       unsigned int pipe_bpp;
>         bool dither;
>         bool is_cpu_edp = false, is_pch_edp = false;
>
> @@ -4800,18 +4799,10 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
>                 target_clock = adjusted_mode->clock;
>
>         /* determine panel color depth */
> -       dither = intel_choose_pipe_bpp_dither(crtc, fb, &pipe_bpp, mode);
> +       dither = intel_choose_pipe_bpp_dither(crtc, fb, &intel_crtc->bpp, mode);
>         if (is_lvds && dev_priv->lvds_dither)
>                 dither = true;
>
> -       if (pipe_bpp != 18 && pipe_bpp != 24 && pipe_bpp != 30 &&
> -           pipe_bpp != 36) {
> -               WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
> -                    pipe_bpp);
> -               pipe_bpp = 24;
> -       }
> -       intel_crtc->bpp = pipe_bpp;
> -
>         if (!lane) {
>                 /*
>                  * Account for spread spectrum to avoid
> --
> 1.7.10.4
>
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-- 
Rodrigo Vivi
Blog: http://blog.vivi.eng.br