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drm/ingenic: Implement proper .atomic_get_input_bus_fmts

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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
This commit is contained in:
Paul Cercueil
2022-04-07 13:16:10 +02:00
parent 6de79dd3a9
commit 33e799ed90
1 changed files with 27 additions and 1 deletions
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28
drivers/gpu/drm/ingenic/ingenic-drm-drv.c
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@@ -833,6 +833,32 @@ static int ingenic_drm_bridge_atomic_check(struct drm_bridge *bridge,
}
}
static u32 *
ingenic_drm_bridge_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)
{
switch (output_fmt) {
case MEDIA_BUS_FMT_RGB888_1X24:
case MEDIA_BUS_FMT_RGB666_1X18:
case MEDIA_BUS_FMT_RGB565_1X16:
case MEDIA_BUS_FMT_RGB888_3X8:
case MEDIA_BUS_FMT_RGB888_3X8_DELTA:
break;
default:
*num_input_fmts = 0;
return NULL;
}
return drm_atomic_helper_bridge_propagate_bus_fmt(bridge, bridge_state,
crtc_state, conn_state,
output_fmt,
num_input_fmts);
}
static irqreturn_t ingenic_drm_irq_handler(int irq, void *arg)
{
struct ingenic_drm *priv = drm_device_get_priv(arg);
@@ -984,7 +1010,7 @@ static const struct drm_bridge_funcs ingenic_drm_bridge_funcs = {
.atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_get_input_bus_fmts = drm_atomic_helper_bridge_propagate_bus_fmt,
.atomic_get_input_bus_fmts = ingenic_drm_bridge_atomic_get_input_bus_fmts,
};
static const struct drm_mode_config_funcs ingenic_drm_mode_config_funcs = {