On Wed, Jan 15, 2025 at 10:05:36PM +0100, Maxime Ripard wrote:
> The TI sn65dsi86 driver follows the drm_encoder->crtc pointer that is
> deprecated and shouldn't be used by atomic drivers.
>
> This was due to the fact that we did't have any other alternative to
> retrieve the CRTC pointer. Fortunately, the crtc pointer is now provided
> in the bridge state, so we can move to atomic callbacks and drop that
> deprecated pointer usage.
>
> Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/ti-sn65dsi86.c | 41 ++++++++++++++++++++---------------
> 1 file changed, 24 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index b3d617505dda7d22b38c000fb79de46376adf3f1..c17d9486cf5c36d61eb00af2bdf9ba1b6f890ffd 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -242,15 +242,16 @@ static void ti_sn65dsi86_write_u16(struct ti_sn65dsi86 *pdata,
> u8 buf[2] = { val & 0xff, val >> 8 };
>
> regmap_bulk_write(pdata->regmap, reg, buf, ARRAY_SIZE(buf));
> }
>
> -static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata)
> +static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata,
> + struct drm_bridge_state *bridge_state)
> {
> u32 bit_rate_khz, clk_freq_khz;
> struct drm_display_mode *mode =
> - &pdata->bridge.encoder->crtc->state->adjusted_mode;
> + &bridge_state->crtc->state->adjusted_mode;
At least we should document why is it safe to follow the crtc->state.
--
With best wishes
Dmitry
