[PATCH v6 09/22] drm/sun4i: sun6i_mipi_dsi: Enable burst mode HBP, HSA_HSE

[Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>]

Horizontal back porch, sync active and sync end bits are
needed to disable for burst mode panel operations.

So, disable them via dsi base control register.

Signed-off-by: Jagan Teki <jagan-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
---
 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index a2ad9fa7f8d5..3d7c03161954 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -549,12 +549,17 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi,
 	u16 hbp, hfp, hsa, hblk, vblk;
 	size_t bytes;
 	u8 *buffer;
+	u32 val = 0;
 
 	/* Do all timing calculations up front to allocate buffer space */
 
 	if (device->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) {
 		hbp = hfp = hsa = vblk = 0;
 		hblk = (mode->hdisplay * Bpp);
+
+		regmap_read(dsi->regs, SUN6I_DSI_BASIC_CTL_REG, &val);
+		val |= SUN6I_DSI_BASIC_CTL_HBP_DIS;
+		val |= SUN6I_DSI_BASIC_CTL_HSA_HSE_DIS;
 		goto alloc_buf;
 	}
 
@@ -603,7 +608,7 @@ static void sun6i_dsi_setup_timings(struct sun6i_dsi *dsi,
 	if (WARN_ON(!buffer))
 		return;
 
-	regmap_write(dsi->regs, SUN6I_DSI_BASIC_CTL_REG, 0);
+	regmap_write(dsi->regs, SUN6I_DSI_BASIC_CTL_REG, val);
 
 	regmap_write(dsi->regs, SUN6I_DSI_SYNC_HSS_REG,
 		     sun6i_dsi_build_sync_pkt(MIPI_DSI_H_SYNC_START,
-- 
2.18.0.321.gffc6fa0e3