[PATCH v1 2/2] drm/bridge: ti-sn65dsi83: Add DSI video mode configuration

[Francesco Dolcini]

From: Francesco Dolcini <francesco.dolc...@toradex.com>

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.dolc...@toradex.com>
---
 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