diff mbox series

[v6,5/8] drm/bridge: sii902x: Support format negotiation hooks

Message ID 20230509093036.3303-6-a-bhatia1@ti.com
State New
Headers
Series drm/tidss: Use new connector model for tidss |

Commit Message

Aradhya Bhatia May 9, 2023, 9:30 a.m. UTC 
  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>
---
 drivers/gpu/drm/bridge/sii902x.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

Comments

Neil Armstrong May 16, 2023, 7:16 a.m. UTC | #1 
On 09/05/2023 11:30, Aradhya Bhatia wrote:
> 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>
> ---
>   drivers/gpu/drm/bridge/sii902x.c | 26 ++++++++++++++++++++++++++
>   1 file changed, 26 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
> index ef66461e7f7c..662b6cb4aa62 100644
> --- a/drivers/gpu/drm/bridge/sii902x.c
> +++ b/drivers/gpu/drm/bridge/sii902x.c
> @@ -473,6 +473,28 @@ 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;
> +	u32 default_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
> +
> +	*num_input_fmts = 0;
> +
> +	input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
> +	if (!input_fmts)
> +		return NULL;
> +
> +	input_fmts[0] = default_bus_format;
> +	*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 +502,10 @@ 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)

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
index ef66461e7f7c..662b6cb4aa62 100644
--- a/drivers/gpu/drm/bridge/sii902x.c
+++ b/drivers/gpu/drm/bridge/sii902x.c
@@ -473,6 +473,28 @@  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;
+	u32 default_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+
+	*num_input_fmts = 0;
+
+	input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);
+	if (!input_fmts)
+		return NULL;
+
+	input_fmts[0] = default_bus_format;
+	*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 +502,10 @@  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)