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drm/bridge: sii902x: Support format negotiation hooks 

With new connector model, sii902x will not create the connector, when
DRM_BRIDGE_ATTACH_NO_CONNECTOR is set and SoC driver will rely on format
negotiation to setup the encoder format.

Support format negotiations hooks in the drm_bridge_funcs.
Use helper functions for state management.

Input format is selected to MEDIA_BUS_FMT_RGB888_1X24 as default, as is
the case with older model.

Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606082142.23760-6-a-bhatia1@ti.com
This commit is contained in:
Aradhya Bhatia 2023-06-06 13:51:39 +05:30 committed by Javier Martinez Canillas
parent 1934bf53f2
commit 7978ec7d0d
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GPG Key ID: C751E590D63F3D69
1 changed files with 25 additions and 0 deletions
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25
drivers/gpu/drm/bridge/sii902x.c
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@ -473,6 +473,27 @@ static struct edid *sii902x_bridge_get_edid(struct drm_bridge *bridge,
return sii902x_get_edid(sii902x, connector);
}
static u32 *sii902x_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)
{
u32 *input_fmts;
*num_input_fmts = 0;
input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
if (!input_fmts)
return NULL;
input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
*num_input_fmts = 1;
return input_fmts;
}
static const struct drm_bridge_funcs sii902x_bridge_funcs = {
.attach = sii902x_bridge_attach,
.mode_set = sii902x_bridge_mode_set,
@ -480,6 +501,10 @@ static const struct drm_bridge_funcs sii902x_bridge_funcs = {
.enable = sii902x_bridge_enable,
.detect = sii902x_bridge_detect,
.get_edid = sii902x_bridge_get_edid,
.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 = sii902x_bridge_atomic_get_input_bus_fmts,
};
static int sii902x_mute(struct sii902x *sii902x, bool mute)