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| author | Paul Cercueil <paul@crapouillou.net> | 2022-04-07 14:16:10 +0300 |
|---|---|---|
| committer | Paul Cercueil <paul@crapouillou.net> | 2022-04-11 18:03:23 +0300 |
| commit | 33e799ed905b84a53b9efa71c6f2b62cbbca40dd (patch) | |
| tree | da24d857f7eb4c3b10b194b0f03b0f275b1ce9af /drivers/gpu/drm/ingenic | |
| parent | 6de79dd3a920a138a292231e2da82ab8e019ec99 (diff) | |
| download | linux-33e799ed905b84a53b9efa71c6f2b62cbbca40dd.tar.xz | |
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
Diffstat (limited to 'drivers/gpu/drm/ingenic')
| -rw-r--r-- | drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index a4f5a323f490..8eb0ad501a7b 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -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 = { |