From patchwork Mon Jul 17 06:18:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liu Ying X-Patchwork-Id: 13316389 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail-vi1eur05on20614.outbound.protection.outlook.com ([2a01:111:f400:7d00::614] helo=EUR05-VI1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qLHUx-002zno-1T for linux-arm-kernel@lists.infradead.org; Mon, 17 Jul 2023 06:14:20 +0000 From: Liu Ying Subject: [PATCH 4/9] drm/bridge: synopsys: dw-mipi-dsi: Add mode fixup support Date: Mon, 17 Jul 2023 14:18:26 +0800 Message-Id: <20230717061831.1826878-5-victor.liu@nxp.com> In-Reply-To: <20230717061831.1826878-1-victor.liu@nxp.com> References: <20230717061831.1826878-1-victor.liu@nxp.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+lwn-linux-arm-kernel=archive.lwn.net@lists.infradead.org List-Archive: 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, linux-imx@nxp.com Vendor drivers may need to fixup mode due to pixel clock tree limitation, so introduce the ->mode_fixup() callcack to struct dw_mipi_dsi_plat_data and call it at atomic check stage if available. Signed-off-by: Liu Ying --- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 14 ++++++++++++++ include/drm/bridge/dw_mipi_dsi.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 8cd89a63b5f2..c754d55f71d1 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -571,9 +571,23 @@ static int dw_mipi_dsi_bridge_atomic_check(struct drm_bridge *bridge, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { + struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge); + const struct dw_mipi_dsi_plat_data *pdata = dsi->plat_data; + bool ret; + bridge_state->input_bus_cfg.flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE; + if (pdata->mode_fixup) { + ret = pdata->mode_fixup(pdata->priv_data, &crtc_state->mode, + &crtc_state->adjusted_mode); + if (!ret) { + DRM_DEBUG_DRIVER("failed to fixup mode " DRM_MODE_FMT "\n", + DRM_MODE_ARG(&crtc_state->mode)); + return -EINVAL; + } + } + return 0; } diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h index 246650f2814f..65d5e68065e3 100644 --- a/include/drm/bridge/dw_mipi_dsi.h +++ b/include/drm/bridge/dw_mipi_dsi.h @@ -59,6 +59,9 @@ struct dw_mipi_dsi_plat_data { unsigned long mode_flags, u32 lanes, u32 format); + bool (*mode_fixup)(void *priv_data, const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode); + u32 *(*get_input_bus_fmts)(void *priv_data, struct drm_bridge *bridge, struct drm_bridge_state *bridge_state,