Commit 0b157efa authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Neil Armstrong
Browse files

drm/bridge: lt9611: fix polarity programming 



Fix programming of hsync and vsync polarities

Fixes: 23278bf5 ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-4-dmitry.baryshkov@linaro.org
parent a7790f6b

drivers/gpu/drm/bridge/lontium-lt9611.c

+12 −5
Original line number Diff line number Diff line
@@ -207,7 +207,6 @@ static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mod 


		/* stage 2 */

		{ 0x834a, 0x40 },

		{ 0x831d, 0x10 },



		/* MK limit */

		{ 0x832d, 0x38 },
@@ -222,10 +221,18 @@ static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mod 
		{ 0x8325, 0x00 },

		{ 0x832a, 0x01 },

		{ 0x834a, 0x10 },

		{ 0x831d, 0x10 },

		{ 0x8326, 0x37 },

	};

	u8 pol = 0x10;



	if (mode->flags & DRM_MODE_FLAG_NHSYNC)

		pol |= 0x2;

	if (mode->flags & DRM_MODE_FLAG_NVSYNC)

		pol |= 0x1;

	regmap_write(lt9611->regmap, 0x831d, pol);



	if (mode->hdisplay == 3840)

		regmap_multi_reg_write(lt9611->regmap, reg_cfg2, ARRAY_SIZE(reg_cfg2));

	else

		regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));



	switch (mode->hdisplay) {
@@ -236,7 +243,7 @@ static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mod 
		regmap_write(lt9611->regmap, 0x8326, 0x37);

		break;

	case 3840:

		regmap_multi_reg_write(lt9611->regmap, reg_cfg2, ARRAY_SIZE(reg_cfg2));

		regmap_write(lt9611->regmap, 0x8326, 0x37);

		break;

	}