From patchwork Wed Apr 6 16:26:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H. Nikolaus Schaller" X-Patchwork-Id: 12803906 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9AEE8C433EF for ; Wed, 6 Apr 2022 17:42:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239314AbiDFRob (ORCPT ); Wed, 6 Apr 2022 13:44:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239521AbiDFRoH (ORCPT ); Wed, 6 Apr 2022 13:44:07 -0400 Received: from mo4-p03-ob.smtp.rzone.de (mo4-p03-ob.smtp.rzone.de [85.215.255.102]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D6C111409D; Wed, 6 Apr 2022 09:26:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1649262374; s=strato-dkim-0002; d=goldelico.com; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=iZmJQU4w0loEJYUzL+duhnqemsckspj5xYLJuUIpWSY=; b=qHqDmUV+j/Sq5TxP/VqDgpS5xjh63cqKxuPUR58be0RRo6utMc8FwbdFcjTHvXkAy2 bKMFMXG4FTIKmydbMdGCGmfroFSYBLW031PuV+lVV0WKbUtQUY954G8RWK8KIR6I+meb lgJF1AMsHEQXlzzWl2DXgP7/+GJdHe5xJOxaqIJqidJD6fNZurF2sK0O39us/x83KpR5 oCvP0AO4ZTecg5tUiAddZiJd6D1ErWwUOXrNKLlNvi2Hs0LH4m44it6p+7c/ajtp8vL3 Q84lGibkidslprwtZIO0ybKHG53FLSI5urwdK8vDCcxEp336hCmZuqN8/7QlgbAvHQjz Jgtw== Authentication-Results: strato.com; dkim=none X-RZG-AUTH: ":JGIXVUS7cutRB/49FwqZ7WcJeFKiMhflhwDubTJ9o1OAA2UMf2MwPVbgcbPa" X-RZG-CLASS-ID: mo00 Received: from iMac.fritz.box by smtp.strato.de (RZmta 47.42.2 DYNA|AUTH) with ESMTPSA id k708cfy36GQDgVQ (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Wed, 6 Apr 2022 18:26:13 +0200 (CEST) From: "H. Nikolaus Schaller" To: Andrzej Hajda , Neil Armstrong , Robert Foss , Paul Boddie , Laurent Pinchart , Jernej Skrabec , David Airlie , Daniel Vetter , Paul Cercueil , Maxime Ripard , "H. Nikolaus Schaller" , Kieran Bingham Cc: Jonas Karlman , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mips@vger.kernel.org, letux-kernel@openphoenux.org Subject: [PATCH v17 4/6] drm/bridge: dw-hdmi: handle unusable or non-configured CSC module Date: Wed, 6 Apr 2022 18:26:06 +0200 Message-Id: <8de76ca2b478016f4dbed84e37db231e7810e56c.1649262368.git.hns@goldelico.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Neil Armstrong The dw-hdmi integrates an optional Color Space Conversion feature used to handle color-space conversions. On some platforms, the CSC isn't built-in or non-functional. This adds the necessary code to disable the CSC functionality and limit the bus format negotiation to force using the same input bus format as the output bus format. Signed-off-by: Neil Armstrong Signed-off-by: H. Nikolaus Schaller --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 100 +++++++++++++++------- drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 1 + include/drm/bridge/dw_hdmi.h | 1 + 3 files changed, 71 insertions(+), 31 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index f50af40e10340..b5a665c5e406e 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -158,6 +158,8 @@ struct dw_hdmi { struct hdmi_data_info hdmi_data; const struct dw_hdmi_plat_data *plat_data; + bool csc_available; /* indicates if the CSC engine is usable */ + int vic; u8 edid[HDMI_EDID_LEN]; @@ -1009,9 +1011,10 @@ static int is_color_space_interpolation(struct dw_hdmi *hdmi) static bool is_csc_needed(struct dw_hdmi *hdmi) { - return is_color_space_conversion(hdmi) || - is_color_space_decimation(hdmi) || - is_color_space_interpolation(hdmi); + return hdmi->csc_available && + (is_color_space_conversion(hdmi) || + is_color_space_decimation(hdmi) || + is_color_space_interpolation(hdmi)); } static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi) @@ -1064,6 +1067,9 @@ static void hdmi_video_csc(struct dw_hdmi *hdmi) int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE; int decimation = 0; + if (!hdmi->csc_available) + return; + /* YCC422 interpolation to 444 mode */ if (is_color_space_interpolation(hdmi)) interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1; @@ -2665,6 +2671,7 @@ static u32 *dw_hdmi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, u32 output_fmt, unsigned int *num_input_fmts) { + struct dw_hdmi *hdmi = bridge->driver_private; u32 *input_fmts; unsigned int i = 0; @@ -2683,62 +2690,81 @@ static u32 *dw_hdmi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, /* 8bit */ case MEDIA_BUS_FMT_RGB888_1X24: input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; - input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; - input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + } break; case MEDIA_BUS_FMT_YUV8_1X24: input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; - input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; - input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + } break; case MEDIA_BUS_FMT_UYVY8_1X16: input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; - input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; - input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + } break; /* 10bit */ case MEDIA_BUS_FMT_RGB101010_1X30: input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; - input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; - input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + } break; case MEDIA_BUS_FMT_YUV10_1X30: input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; - input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; - input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + } break; case MEDIA_BUS_FMT_UYVY10_1X20: input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; - input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; - input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + } break; /* 12bit */ case MEDIA_BUS_FMT_RGB121212_1X36: input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; - input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; - input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + } break; case MEDIA_BUS_FMT_YUV12_1X36: input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; - input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; - input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + } break; case MEDIA_BUS_FMT_UYVY12_1X24: input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; - input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; - input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + if (hdmi->csc_available) { + input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + } break; /* 16bit */ case MEDIA_BUS_FMT_RGB161616_1X48: input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; - input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; + if (hdmi->csc_available) + input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; break; case MEDIA_BUS_FMT_YUV16_1X48: - input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; - input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; + if (hdmi->csc_available) + input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; break; /*YUV 4:2:0 */ @@ -2767,15 +2793,24 @@ static int dw_hdmi_bridge_atomic_check(struct drm_bridge *bridge, { struct dw_hdmi *hdmi = bridge->driver_private; - hdmi->hdmi_data.enc_out_bus_format = - bridge_state->output_bus_cfg.format; + if (!hdmi->csc_available && + bridge_state->output_bus_cfg.format != bridge_state->input_bus_cfg.format) { + dev_warn(hdmi->dev, "different input format 0x%04x & output format 0x%04x while CSC isn't usable, fallback to safe format\n", + bridge_state->input_bus_cfg.format, + bridge_state->output_bus_cfg.format); + hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_FIXED; + hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_FIXED; + } else { + hdmi->hdmi_data.enc_out_bus_format = + bridge_state->output_bus_cfg.format; - hdmi->hdmi_data.enc_in_bus_format = - bridge_state->input_bus_cfg.format; + hdmi->hdmi_data.enc_in_bus_format = + bridge_state->input_bus_cfg.format; - dev_dbg(hdmi->dev, "input format 0x%04x, output format 0x%04x\n", - bridge_state->input_bus_cfg.format, - bridge_state->output_bus_cfg.format); + dev_dbg(hdmi->dev, "input format 0x%04x, output format 0x%04x\n", + bridge_state->input_bus_cfg.format, + bridge_state->output_bus_cfg.format); + } return 0; } @@ -3481,6 +3516,9 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, hdmi->cec = platform_device_register_full(&pdevinfo); } + /* Get CSC useability from config0 register and permit override for platforms */ + hdmi->csc_available = !plat_data->disable_csc || (config0 & HDMI_CONFIG0_CSC); + drm_bridge_add(&hdmi->bridge); return hdmi; diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index 1999db05bc3b2..279722e4d1898 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h @@ -541,6 +541,7 @@ enum { /* CONFIG0_ID field values */ HDMI_CONFIG0_I2S = 0x10, + HDMI_CONFIG0_CSC = 0x04, HDMI_CONFIG0_CEC = 0x02, /* CONFIG1_ID field values */ diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index 2a1f85f9a8a3f..b2f689cbe864c 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -157,6 +157,7 @@ struct dw_hdmi_plat_data { unsigned long mpixelclock); unsigned int disable_cec : 1; + unsigned int disable_csc : 1; }; struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,