[PATCH v10 15/21] drm/mediatek: dpi: Only enable dpi after the bridge is enabled

From: Guillaume Ranquet <granquet@baylibre.com>
To: Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	Kishon Vijay Abraham I <kishon@ti.com>,
	Vinod Koul <vkoul@kernel.org>, Helge Deller <deller@gmx.de>,
	CK Hu <ck.hu@mediatek.com>, Jitao shi <jitao.shi@mediatek.com>
Cc: dri-devel@lists.freedesktop.org,
	linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-phy@lists.infradead.org, linux-fbdev@vger.kernel.org
Subject: [PATCH v10 15/21] drm/mediatek: dpi: Only enable dpi after the bridge is enabled
Date: Mon, 23 May 2022 12:47:48 +0200	[thread overview]
Message-ID: <20220523104758.29531-16-granquet@baylibre.com> (raw)
In-Reply-To: <20220523104758.29531-1-granquet@baylibre.com>

Enabling the dpi too early causes glitches on screen.

Move the call to mtk_dpi_enable() at the end of the bridge_enable
callback to ensure everything is setup properly before enabling dpi.

Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 763bfb700135..a6b6d62a17e7 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -478,7 +478,6 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi)
 	if (dpi->pinctrl && dpi->pins_dpi)
 		pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);
 
-	mtk_dpi_enable(dpi);
 	return 0;
 
 err_pixel:
@@ -711,6 +710,7 @@ static void mtk_dpi_bridge_enable(struct drm_bridge *bridge)
 
 	mtk_dpi_power_on(dpi);
 	mtk_dpi_set_display_mode(dpi, &dpi->mode);
+	mtk_dpi_enable(dpi);
 }
 
 static enum drm_mode_status
-- 
2.35.1

