This configuration could be used in MIPI DSI command mode also.
And adds user manual description for display configuration.
Signed-off-by: YoungJun Cho <yj44.cho@xxxxxxxxxxx>
Acked-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 2df3592..58bfb2a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -468,13 +468,20 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi)
/* DSI configuration */
reg = 0;
+ /*
+ * The first bit of mode_flags specifies display configuration.
+ * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video
+ * mode, otherwise it will support command mode.
+ */
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
reg |= DSIM_VIDEO_MODE;
+ /*
+ * The user manual describes that following bits are ignored in
+ * command mode.
+ */
if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH))
reg |= DSIM_MFLUSH_VS;
- if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))
- reg |= DSIM_EOT_DISABLE;
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
reg |= DSIM_SYNC_INFORM;
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
@@ -491,6 +498,9 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi)
reg |= DSIM_HSA_MODE;
}
+ if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))
+ reg |= DSIM_EOT_DISABLE;
+
switch (dsi->format) {
case MIPI_DSI_FMT_RGB888:
reg |= DSIM_MAIN_PIX_FORMAT_RGB888;
--
1.9.0
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