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Message-ID: <20230509093036.3303-6-a-bhatia1@ti.com>
Date: Tue, 9 May 2023 15:00:33 +0530
From: Aradhya Bhatia <a-bhatia1@...com>
To: Tomi Valkeinen <tomba@...nel.org>, Jyri Sarha <jyri.sarha@....fi>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <rfoss@...nel.org>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Rahul T R <r-ravikumar@...com>,
Swapnil Jakhade <sjakhade@...ence.com>,
Boris Brezillon <boris.brezillon@...labora.com>,
Francesco Dolcini <francesco@...cini.it>
CC: DRI Development List <dri-devel@...ts.freedesktop.org>,
Linux Kernel List <linux-kernel@...r.kernel.org>,
Nishanth Menon <nm@...com>,
Vignesh Raghavendra <vigneshr@...com>,
Devarsh Thakkar <devarsht@...com>,
Jayesh Choudhary <j-choudhary@...com>,
Aradhya Bhatia <a-bhatia1@...com>
Subject: [PATCH v6 5/8] 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@...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)
--
2.40.1
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