On Thu, May 09, 2024 at 08:14:07PM +0200, Barnabás Czémán wrote:
> Move DCS off commands from .unprepare to .disable so that they
> actually reach the DSI host.
>
> Signed-off-by: Barnabás Czémán <trabarni@xxxxxxxxx>
> ---
> drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
I don't think this is correct. If the driver sends enable commands in
prepare, it should be able to send commands during unprepare too.
>
> diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
> index 483dc88d16d8..f7222974d6ed 100644
> --- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
> +++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
> @@ -169,6 +169,15 @@ static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
> }
>
> static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
> +{
> + struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
> +
> + gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> +
> + return 0;
> +}
> +
> +static int jdi_fhd_r63452_disable(struct drm_panel *panel)
> {
> struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
> struct device *dev = &ctx->dsi->dev;
> @@ -178,8 +187,6 @@ static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
> if (ret < 0)
> dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
>
> - gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> -
> return 0;
> }
>
> @@ -219,6 +226,7 @@ static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
> static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
> .prepare = jdi_fhd_r63452_prepare,
> .unprepare = jdi_fhd_r63452_unprepare,
> + .disable = jdi_fhd_r63452_disable,
> .get_modes = jdi_fhd_r63452_get_modes,
> };
>
>
> ---
> base-commit: 704ba27ac55579704ba1289392448b0c66b56258
> change-id: 20240509-jdi-use-disable-ee29098d9c81
>
> Best regards,
> --
> Barnabás Czémán <trabarni@xxxxxxxxx>
>
--
With best wishes
Dmitry
