Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/ingenic: Implement proper .atomic_get_input_bus_fmts
The .atomic_get_input_bus_fmts() callback of our top bridge should
return the possible input formats for a given output format. If the
requested output format is not supported, then NULL should be returned,
otherwise the bus format negociation will end with a bus format that the
encoder does not support.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://patchwork.freedesktop.org/patch/msgid/ab25925723cff2f3e773e7137567ef86fff5fdba.1649330171.git.hns@goldelico.com
+27
-1
+27
-1
drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+27
-1
drivers/gpu/drm/ingenic/ingenic-drm-drv.c
···
833
833
}
834
834
}
835
835
836
+
static u32 *
837
+
ingenic_drm_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
838
+
struct drm_bridge_state *bridge_state,
839
+
struct drm_crtc_state *crtc_state,
840
+
struct drm_connector_state *conn_state,
841
+
u32 output_fmt,
842
+
unsigned int *num_input_fmts)
843
+
{
844
+
switch (output_fmt) {
845
+
case MEDIA_BUS_FMT_RGB888_1X24:
846
+
case MEDIA_BUS_FMT_RGB666_1X18:
847
+
case MEDIA_BUS_FMT_RGB565_1X16:
848
+
case MEDIA_BUS_FMT_RGB888_3X8:
849
+
case MEDIA_BUS_FMT_RGB888_3X8_DELTA:
850
+
break;
851
+
default:
852
+
*num_input_fmts = 0;
853
+
return NULL;
854
+
}
855
+
856
+
return drm_atomic_helper_bridge_propagate_bus_fmt(bridge, bridge_state,
857
+
crtc_state, conn_state,
858
+
output_fmt,
859
+
num_input_fmts);
860
+
}
861
+
836
862
static irqreturn_t ingenic_drm_irq_handler(int irq, void *arg)
837
863
{
838
864
struct ingenic_drm *priv = drm_device_get_priv(arg);
···
1010
984
.atomic_reset = drm_atomic_helper_bridge_reset,
1011
985
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
1012
986
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
1013
-
.atomic_get_input_bus_fmts = drm_atomic_helper_bridge_propagate_bus_fmt,
987
+
.atomic_get_input_bus_fmts = ingenic_drm_bridge_atomic_get_input_bus_fmts,
1014
988
};
1015
989
1016
990
static const struct drm_mode_config_funcs ingenic_drm_mode_config_funcs = {