Hi,
On Sat, May 11, 2024 at 09:00:45PM +0530, Aradhya Bhatia wrote:
> Add support for mode_fixup for the tidss CRTC.
>
> Some bridges like the cdns-dsi consume the crtc_* timing parameters for
> programming the blanking values. Allow for the normal timing parameters
> to get copied to crtc_* timing params.
>
> Signed-off-by: Aradhya Bhatia <a-bhat...@ti.com>
> ---
> drivers/gpu/drm/tidss/tidss_crtc.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/tidss/tidss_crtc.c
> b/drivers/gpu/drm/tidss/tidss_crtc.c
> index 94f8e3178df5..797ef53d9ad2 100644
> --- a/drivers/gpu/drm/tidss/tidss_crtc.c
> +++ b/drivers/gpu/drm/tidss/tidss_crtc.c
> @@ -309,12 +309,23 @@ enum drm_mode_status tidss_crtc_mode_valid(struct
> drm_crtc *crtc,
> return dispc_vp_mode_valid(tidss->dispc, tcrtc->hw_videoport, mode);
> }
>
> +static
> +bool tidss_crtc_mode_fixup(struct drm_crtc *crtc,
> + const struct drm_display_mode *mode,
> + struct drm_display_mode *adjusted_mode)
> +{
> + drm_mode_set_crtcinfo(adjusted_mode, 0);
> +
> + return true;
> +}
> +
> static const struct drm_crtc_helper_funcs tidss_crtc_helper_funcs = {
> .atomic_check = tidss_crtc_atomic_check,
> .atomic_flush = tidss_crtc_atomic_flush,
> .atomic_enable = tidss_crtc_atomic_enable,
> .atomic_disable = tidss_crtc_atomic_disable,
>
> + .mode_fixup = tidss_crtc_mode_fixup,
> .mode_valid = tidss_crtc_mode_valid,
> };mode_fixup is deprecated for atomic drivers, so the solution must be different there. It's also not clear to me how it could change anything there: drm_mode_set_crtcinfo with no flags will make crtc_* field exactly identical to their !crtc counterparts. Maxime
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