[Intel-gfx] [PATCH] drm/i915: Update Skylake DDI translation table for HDMI.

[Ville Syrjälä]

On Tue, Jan 05, 2016 at 07:32:59AM -0800, Rodrigo Vivi wrote:
> When debuging an intermittent corrupted screen I suspected on DDI
> translation table and checked we are out of date with the spec.
> 
> I'm not sure this will fix my bug yet, but it is always good to follow
> the spec.
> 
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_ddi.c | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index e6408e5..c7e3114 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -225,27 +225,27 @@ static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {
>  	{ 0x00007011, 0x00000088, 0x0 },
>  	{ 0x00000018, 0x000000A1, 0x0 },
>  	{ 0x00000018, 0x00000098, 0x0 },
> -	{ 0x00004013, 0x00000088, 0x0 },
> -	{ 0x00006012, 0x00000087, 0x0 },
> +	{ 0x00004013, 0x00000088, 0x1 },
                                  ^^^

0x0

> +	{ 0x80006012, 0x000000CD, 0x0 },
                                  ^^^
0x1

The rest looks fine.

>  	{ 0x00000018, 0x000000DF, 0x0 },
> -	{ 0x00003015, 0x00000087, 0x0 },	/* Default */
> -	{ 0x00003015, 0x000000C7, 0x0 },
> -	{ 0x00000018, 0x000000C7, 0x0 },
> +	{ 0x80003015, 0x000000CD, 0x1 },	/* Default */
> +	{ 0x80003015, 0x000000C0, 0x1 },
> +	{ 0x80000018, 0x000000C0, 0x1 },
>  };
>  
>  /* Skylake Y */
>  static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
>  	{ 0x00000018, 0x000000A1, 0x0 },
>  	{ 0x00005012, 0x000000DF, 0x0 },
> -	{ 0x00007011, 0x00000084, 0x0 },
> +	{ 0x80007011, 0x000000CB, 0x3 },
>  	{ 0x00000018, 0x000000A4, 0x0 },
>  	{ 0x00000018, 0x0000009D, 0x0 },
>  	{ 0x00004013, 0x00000080, 0x0 },
> -	{ 0x00006013, 0x000000C7, 0x0 },
> +	{ 0x80006013, 0x000000C0, 0x3 },
>  	{ 0x00000018, 0x0000008A, 0x0 },
> -	{ 0x00003015, 0x000000C7, 0x0 },	/* Default */
> -	{ 0x80003015, 0x000000C7, 0x7 },	/* Uses I_boost level 0x7 */

Since you're removing this pointless "Uses I_boost..." comment,
maybe remove all such comments as a followup?

> -	{ 0x00000018, 0x000000C7, 0x0 },
> +	{ 0x80003015, 0x000000C0, 0x3 },	/* Default */
> +	{ 0x80003015, 0x000000C0, 0x3 },
> +	{ 0x80000018, 0x000000C0, 0x3 },
>  };
>  
>  struct bxt_ddi_buf_trans {
> -- 
> 2.4.3
> 
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-- 
Ville Syrjälä
Intel OTC