[PATCH] drm/panel: raydium-rm69380: transition to mipi_dsi wrapped functions

neil.armstrong at linaro.org neil.armstrong at linaro.org
Fri Sep 13 09:08:17 UTC 2024


Hi,
On 07/09/2024 16:01, Tejas Vipin wrote:
> Changes the raydium-rm69380 panel to use multi style functions for
> improved error handling.
> 
> Signed-off-by: Tejas Vipin <tejasvipin76 at gmail.com>
> ---
>   drivers/gpu/drm/panel/panel-raydium-rm69380.c | 95 ++++++-------------
>   1 file changed, 30 insertions(+), 65 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-raydium-rm69380.c b/drivers/gpu/drm/panel/panel-raydium-rm69380.c
> index 4dca6802faef..bdab844dab55 100644
> --- a/drivers/gpu/drm/panel/panel-raydium-rm69380.c
> +++ b/drivers/gpu/drm/panel/panel-raydium-rm69380.c
> @@ -46,108 +46,73 @@ static void rm69380_reset(struct rm69380_panel *ctx)
>   static int rm69380_on(struct rm69380_panel *ctx)
>   {
>   	struct mipi_dsi_device *dsi = ctx->dsi[0];
> -	struct device *dev = &dsi->dev;
> -	int ret;
> +	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
>   
>   	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
>   	if (ctx->dsi[1])
>   		ctx->dsi[1]->mode_flags |= MIPI_DSI_MODE_LPM;
>   
> -	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd4);
> -	mipi_dsi_dcs_write_seq(dsi, 0x00, 0x80);
> -	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0xd0);
> -	mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);
> -	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x26);
> -	mipi_dsi_dcs_write_seq(dsi, 0x75, 0x3f);
> -	mipi_dsi_dcs_write_seq(dsi, 0x1d, 0x1a);
> -	mipi_dsi_dcs_write_seq(dsi, 0xfe, 0x00);
> -	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);
> -	mipi_dsi_dcs_write_seq(dsi, 0xc2, 0x08);
> -
> -	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> -	if (ret < 0) {
> -		dev_err(dev, "Failed to set tear on: %d\n", ret);
> -		return ret;
> -	}
> -
> -	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> -	if (ret < 0) {
> -		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
> -		return ret;
> -	}
> -	msleep(20);
> -
> -	ret = mipi_dsi_dcs_set_display_on(dsi);
> -	if (ret < 0) {
> -		dev_err(dev, "Failed to set display on: %d\n", ret);
> -		return ret;
> -	}
> -	msleep(36);
> -
> -	return 0;
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd4);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x00, 0x80);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd0);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x48, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x26);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0x3f);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1d, 0x1a);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28);
> +	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x08);
> +
> +	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> +	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
> +	mipi_dsi_msleep(&dsi_ctx, 20);
> +
> +	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
> +	mipi_dsi_msleep(&dsi_ctx, 36);
> +
> +	return dsi_ctx.accum_err;
>   }
>   
> -static int rm69380_off(struct rm69380_panel *ctx)
> +static void rm69380_off(struct rm69380_panel *ctx)
>   {
>   	struct mipi_dsi_device *dsi = ctx->dsi[0];
> -	struct device *dev = &dsi->dev;
> -	int ret;
> +	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
>   
>   	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
>   	if (ctx->dsi[1])
>   		ctx->dsi[1]->mode_flags &= ~MIPI_DSI_MODE_LPM;
>   
> -	ret = mipi_dsi_dcs_set_display_off(dsi);
> -	if (ret < 0) {
> -		dev_err(dev, "Failed to set display off: %d\n", ret);
> -		return ret;
> -	}
> -	msleep(35);
> -
> -	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> -	if (ret < 0) {
> -		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
> -		return ret;
> -	}
> -	msleep(20);
> -
> -	return 0;
> +	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
> +	mipi_dsi_msleep(&dsi_ctx, 35);
> +	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
> +	mipi_dsi_msleep(&dsi_ctx, 20);
>   }
>   
>   static int rm69380_prepare(struct drm_panel *panel)
>   {
>   	struct rm69380_panel *ctx = to_rm69380_panel(panel);
> -	struct device *dev = &ctx->dsi[0]->dev;
>   	int ret;
>   
>   	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> -	if (ret < 0) {
> -		dev_err(dev, "Failed to enable regulators: %d\n", ret);
> -		return ret;
> -	}
> +	if (ret < 0)
> +		return ret;	
>   
>   	rm69380_reset(ctx);
>   
>   	ret = rm69380_on(ctx);
>   	if (ret < 0) {
> -		dev_err(dev, "Failed to initialize panel: %d\n", ret);
>   		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
>   		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> -		return ret;
>   	}
>   
> -	return 0;
> +	return ret;
>   }
>   
>   static int rm69380_unprepare(struct drm_panel *panel)
>   {
>   	struct rm69380_panel *ctx = to_rm69380_panel(panel);
> -	struct device *dev = &ctx->dsi[0]->dev;
> -	int ret;
>   
> -	ret = rm69380_off(ctx);
> -	if (ret < 0)
> -		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
> +	rm69380_off(ctx);
>   
>   	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
>   	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);

I get:
-:129: ERROR:TRAILING_WHITESPACE: trailing whitespace
#129: FILE: drivers/gpu/drm/panel/panel-raydium-rm69380.c:97:
+^Iif (ret < 0) $

-:130: ERROR:TRAILING_WHITESPACE: trailing whitespace
#130: FILE: drivers/gpu/drm/panel/panel-raydium-rm69380.c:98:
+^I^Ireturn ret;^I$

could you fix those ?

Thanks,
Neil



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