Patching the connector format is causing various problematic
side effects. Implement .atomic_get_input_bus_fmts callback
instead, which sets up the input (DSI-end) format, and that
format can then be used in pipeline format negotiation between
the DSI-end of this bridge and the other component closer to
the scanout engine.
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Adam Ford <aford...@gmail.com>
Cc: Douglas Anderson <diand...@chromium.org>
Cc: Frieder Schrempf <frieder.schre...@kontron.de>
Cc: Jagan Teki <ja...@amarulasolutions.com>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Cc: Linus Walleij <linus.wall...@linaro.org>
Cc: Loic Poulain <loic.poul...@linaro.org>
Cc: Philippe Schenker <philippe.schen...@toradex.com>
Cc: Robert Foss <robert.f...@linaro.org>
Cc: Sam Ravnborg <s...@ravnborg.org>
Cc: Stephen Boyd <swb...@chromium.org>
Cc: Valentin Raevsky <valen...@compulab.co.il>
Cc: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/bridge/ti-sn65dsi83.c | 35 ++++++++++++++++++++++++---
1 file changed, 31 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index 750f2172ef08..32bda20f5dda 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -517,7 +517,6 @@ static bool sn65dsi83_mode_fixup(struct drm_bridge *bridge,
struct drm_display_mode *adj)
{
struct sn65dsi83 *ctx = bridge_to_sn65dsi83(bridge);
- u32 input_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
struct drm_encoder *encoder = bridge->encoder;
struct drm_device *ddev = encoder->dev;
struct drm_connector *connector;
@@ -550,14 +549,37 @@ static bool sn65dsi83_mode_fixup(struct drm_bridge
*bridge,
connector->display_info.bus_formats[0]);
break;
}
-
- drm_display_info_set_bus_formats(&connector->display_info,
- &input_bus_format, 1);
}
return true;
}
+#define MAX_INPUT_SEL_FORMATS 1
+
+static u32 *
+sn65dsi83_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state,
+ u32 output_fmt,
+ unsigned int *num_input_fmts)
+{
+ u32 *input_fmts;
+
+ *num_input_fmts = 0;
+
+ input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
+ GFP_KERNEL);
+ if (!input_fmts)
+ return NULL;
+
+ /* This is the DSI-end bus format */
+ input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
+ *num_input_fmts = 1;
+
+ return input_fmts;
+}
+
static const struct drm_bridge_funcs sn65dsi83_funcs = {
.attach = sn65dsi83_attach,
.pre_enable = sn65dsi83_pre_enable,
@@ -567,6 +589,11 @@ static const struct drm_bridge_funcs sn65dsi83_funcs = {
.mode_valid = sn65dsi83_mode_valid,
.mode_set = sn65dsi83_mode_set,
.mode_fixup = sn65dsi83_mode_fixup,
+
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+ .atomic_get_input_bus_fmts = sn65dsi83_atomic_get_input_bus_fmts,
};
static int sn65dsi83_parse_dt(struct sn65dsi83 *ctx, enum sn65dsi83_model
model)
--
2.30.2
