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Mon, 21 Aug 2023 03:36:57 +0000 From: Liu Ying To: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 RESEND 2/9] drm/bridge: synopsys: dw-mipi-dsi: Add input bus format negotiation support Date: Mon, 21 Aug 2023 11:40:01 +0800 Message-Id: <20230821034008.3876938-3-victor.liu@nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230821034008.3876938-1-victor.liu@nxp.com> References: <20230821034008.3876938-1-victor.liu@nxp.com> X-ClientProxiedBy: SI2P153CA0025.APCP153.PROD.OUTLOOK.COM (2603:1096:4:190::12) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM7PR04MB7046:EE_|PA4PR04MB7758:EE_ X-MS-Office365-Filtering-Correlation-Id: 07f31ee3-cb7c-49bd-9b2d-08dba1f7dec8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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While at it, implement a generic callback for ->atomic_get_input_bus_fmts(), where we try to get the input bus formats through pdata->get_input_bus_fmts() first. If it's unavailable, fall back to the only format - MEDIA_BUS_FMT_FIXED, which matches the default behavior if ->atomic_get_input_bus_fmts() is not implemented as ->atomic_get_input_bus_fmts()'s kerneldoc indicates. Signed-off-by: Liu Ying Reviewed-by: Robert Foss --- v1->v3: * No change. drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 30 +++++++++++++++++++ include/drm/bridge/dw_mipi_dsi.h | 11 +++++++ 2 files changed, 41 insertions(+) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index ba3cd2a3e339..945d46a76995 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -538,6 +539,34 @@ static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = { .transfer = dw_mipi_dsi_host_transfer, }; +static u32 * +dw_mipi_dsi_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) +{ + struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge); + const struct dw_mipi_dsi_plat_data *pdata = dsi->plat_data; + u32 *input_fmts; + + if (pdata->get_input_bus_fmts) + return pdata->get_input_bus_fmts(pdata->priv_data, + bridge, bridge_state, + crtc_state, conn_state, + output_fmt, num_input_fmts); + + /* Fall back to MEDIA_BUS_FMT_FIXED as the only input format. */ + input_fmts = kmalloc(sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + input_fmts[0] = MEDIA_BUS_FMT_FIXED; + *num_input_fmts = 1; + + return input_fmts; +} + static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi) { u32 val; @@ -1006,6 +1035,7 @@ static int dw_mipi_dsi_bridge_attach(struct drm_bridge *bridge, static const struct drm_bridge_funcs dw_mipi_dsi_bridge_funcs = { .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_get_input_bus_fmts = dw_mipi_dsi_bridge_atomic_get_input_bus_fmts, .atomic_reset = drm_atomic_helper_bridge_reset, .atomic_pre_enable = dw_mipi_dsi_bridge_atomic_pre_enable, .atomic_enable = dw_mipi_dsi_bridge_atomic_enable, diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h index f54621b17a69..246650f2814f 100644 --- a/include/drm/bridge/dw_mipi_dsi.h +++ b/include/drm/bridge/dw_mipi_dsi.h @@ -11,7 +11,10 @@ #include +#include #include +#include +#include #include struct drm_display_mode; @@ -56,6 +59,14 @@ struct dw_mipi_dsi_plat_data { unsigned long mode_flags, u32 lanes, u32 format); + u32 *(*get_input_bus_fmts)(void *priv_data, + 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); + const struct dw_mipi_dsi_phy_ops *phy_ops; const struct dw_mipi_dsi_host_ops *host_ops;