linux-kernel - [PATCH RFC 4/7] drm/panel: innolux-p079zca: use mipi_dsi_dcs_nop

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Date: Fri, 10 May 2024 01:37:37 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Douglas Anderson <dianders@...omium.org>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>, 
 Sumit Semwal <sumit.semwal@...aro.org>, 
 Caleb Connolly <caleb.connolly@...aro.org>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 Vinod Koul <vkoul@...nel.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH RFC 4/7] drm/panel: innolux-p079zca: use
 mipi_dsi_dcs_nop_multi()

Remove conditional code and use mipi_dsi_dcs_nop_multi() wrapper to
simplify driver code.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/gpu/drm/panel/panel-innolux-p079zca.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index ade8bf7491ee..0691a27a0daa 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -224,21 +224,14 @@ static const struct drm_display_mode innolux_p097pfg_mode = {
 static void innolux_panel_write_multi(struct mipi_dsi_multi_context *ctx,
 				      const void *payload, size_t size)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-
 	mipi_dsi_generic_write_multi(ctx, payload, size);
-	if (ctx->accum_err)
-		return;
 
 	/*
 	 * Included by random guessing, because without this
 	 * (or at least, some delay), the panel sometimes
 	 * didn't appear to pick up the command sequence.
 	 */
-	ctx->accum_err = mipi_dsi_dcs_nop(ctx->dsi);
-	if (ctx->accum_err)
-		dev_err(dev, "failed to send DCS nop: %d\n", ctx->accum_err);
+	mipi_dsi_dcs_nop_multi(ctx);
 }
 
 #define innolux_panel_init_cmd_multi(ctx, seq...)                 \

-- 
2.39.2