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b=l+QHuwzWdIRPH7VdWGLK/ADyubl2SYYWLGaIdnooIOqv1Un9+/knREKb4XuRTG7g4eoS/AuuE68sy0tLJPJXyMwtZ5GAPF5RTWMCnFmwZo4WJi12JsdXob5wHVKAJY5AfhAGnE0jhDzE03W7C25L2CUCAjF6gW7DYckSMONnRbE= Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by PR3PR04MB7243.eurprd04.prod.outlook.com (2603:10a6:102:8c::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.25; Thu, 20 Jul 2023 07:10:00 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::9018:e395:332c:e24b]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::9018:e395:332c:e24b%4]) with mapi id 15.20.6609.022; Thu, 20 Jul 2023 07:10:00 +0000 From: Ying Liu To: "dri-devel@lists.freedesktop.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" CC: "andrzej.hajda@intel.com" , "neil.armstrong@linaro.org" , "rfoss@kernel.org" , "Laurent.pinchart@ideasonboard.com" , "jonas@kwiboo.se" , "jernej.skrabec@gmail.com" , "airlied@gmail.com" , "daniel@ffwll.ch" , "robh+dt@kernel.org" , "krzysztof.kozlowski+dt@linaro.org" , "conor+dt@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , dl-linux-imx , "alexander.stein@ew.tq-group.com" , "sam@ravnborg.org" , "jagan@amarulasolutions.com" Subject: [PATCH v2 2/9] drm/bridge: synopsys: dw-mipi-dsi: Add input bus format negotiation support Thread-Topic: [PATCH v2 2/9] drm/bridge: synopsys: dw-mipi-dsi: Add input bus format negotiation support Thread-Index: Adm62TK6XpKEKypROket2EgKxcczbA== Date: Thu, 20 Jul 2023 07:10:00 +0000 Message-ID: <20230720071430.259892-3-victor.liu@nxp.com> References: <20230720071430.259892-1-victor.liu@nxp.com> In-Reply-To: <20230720071430.259892-1-victor.liu@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SI2PR01CA0039.apcprd01.prod.exchangelabs.com (2603:1096:4:193::16) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) x-mailer: git-send-email 2.37.1 authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; 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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 --- v1->v2: * 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 57eae0fdd970..8580b8a97fb1 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 @@ -536,6 +537,34 @@ 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; @@ -1003,6 +1032,7 @@ 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_enable = dw_mipi_dsi_bridge_atomic_enable, .atomic_post_disable = dw_mipi_dsi_bridge_post_atomic_disable, 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;