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

Jagan Teki
2019-01-24T20:00:14Z

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@amarulasolutions.com>
---
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