[PATCH v3] drm/amd/powerplay: Copy watermark to SMU

[Alex Deucher]

On Fri, Dec 13, 2019 at 11:11 AM Zhan Liu <zhan.liu at amd.com> wrote:
>
> [Why]
> Watermark value was expected to copy to SMU
> within navi10_display_config_changed(). But
> navi10_display_config_changed() is never called.
> As a result, the watermark value is never
> copied to SMU.
>
> [How]
> At end of navi10_set_watermarks_table,
> copy watermark to SMU.
>
> Signed-off-by: Zhan Liu <zhan.liu at amd.com>

This and the renoir patch are:
Acked-by: Alex Deucher <alexander.deucher at amd.com>

Do we know why this isn't getting setup in the display configuration
callback?  Are the watermarks static or do the depend on something?

Alex

> ---
>  drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
> index 15403b7979d6..f4cdd78492fa 100644
> --- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
> +++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
> @@ -1472,6 +1472,17 @@ static int navi10_set_watermarks_table(struct smu_context *smu,
>                                 clock_ranges->wm_mcif_clocks_ranges[i].wm_set_id;
>         }
>
> +       /* Pass data to smu controller */
> +       if ((smu->watermarks_bitmap & WATERMARKS_EXIST) &&
> +                       !(smu->watermarks_bitmap & WATERMARKS_LOADED)) {
> +               int ret = smu_write_watermarks_table(smu);
> +               if (ret) {
> +                       pr_err("Failed to update WMTABLE!");
> +                       return ret;
> +               }
> +               smu->watermarks_bitmap |= WATERMARKS_LOADED;
> +       }
> +
>         return 0;
>  }
>
> --
> 2.17.1
>
> Fix a typo here.
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