From: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
Enable configuration of the DSI video mode instead of hard-coding
MIPI_DSI_MODE_VIDEO_BURST. The bridge support any of burst-mode,
non-burst with sync event or non-burst with sync pulse
With this change is possible to use the bridge with host DSI
that do not support burst mode.
Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
---
drivers/gpu/drm/bridge/ti-sn65dsi83.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index 91ecfbe45bf9..144d0de0d278 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -145,6 +145,7 @@ struct sn65dsi83 {
struct drm_bridge *panel_bridge;
struct gpio_desc *enable_gpio;
struct regulator *vcc;
+ u32 dsi_video_mode;
bool lvds_dual_link;
bool lvds_dual_link_even_odd_swap;
};
@@ -603,6 +604,9 @@ static int sn65dsi83_parse_dt(struct sn65dsi83 *ctx, enum sn65dsi83_model model)
return dev_err_probe(dev, PTR_ERR(ctx->vcc),
"Failed to get supply 'vcc'\n");
+ ctx->dsi_video_mode = 0;
+ of_property_read_u32(dev->of_node, "dsi-video-mode", &ctx->dsi_video_mode);
+
return 0;
}
@@ -642,7 +646,25 @@ static int sn65dsi83_host_attach(struct sn65dsi83 *ctx)
dsi->lanes = dsi_lanes;
dsi->format = MIPI_DSI_FMT_RGB888;
- dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO;
+
+ switch (ctx->dsi_video_mode) {
+ case 0:
+ /* burst mode */
+ dsi->mode_flags |= MIPI_DSI_MODE_VIDEO_BURST;
+ break;
+ case 1:
+ /* non-burst mode with sync event */
+ break;
+ case 2:
+ /* non-burst mode with sync pulse */
+ dsi->mode_flags |= MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+ break;
+ default:
+ dev_warn(dev, "invalid video mode %d\n", ctx->dsi_video_mode);
+ break;
+ }
+
ret = devm_mipi_dsi_attach(dev, dsi);
if (ret < 0) {
--
2.25.1
