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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id c14sm24006398wro.36.2020.03.04.02.41.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2020 02:41:02 -0800 (PST) From: Neil Armstrong To: p.zabel@pengutronix.de, heiko@sntech.de, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@siol.net, boris.brezillon@collabora.com Cc: Neil Armstrong , linux-amlogic@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 04/11] drm/bridge: synopsys: dw-hdmi: add bus format negociation Date: Wed, 4 Mar 2020 11:40:45 +0100 Message-Id: <20200304104052.17196-5-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200304104052.17196-1-narmstrong@baylibre.com> References: <20200304104052.17196-1-narmstrong@baylibre.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the atomic_get_output_bus_fmts, atomic_get_input_bus_fmts to negociate the possible output and input formats for the current mode and monitor, and use the negotiated formats in a basic atomic_check callback. Signed-off-by: Neil Armstrong Reviewed-by: Boris Brezillon Reviewed-by: Jernej Škrabec --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 281 +++++++++++++++++++++- 1 file changed, 277 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 9f2918898f60..de19e8993e1d 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2097,11 +2097,10 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode) hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0; hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0; - /* TOFIX: Get input format from plat data or fallback to RGB888 */ if (hdmi->plat_data->input_bus_format) hdmi->hdmi_data.enc_in_bus_format = hdmi->plat_data->input_bus_format; - else + else if (hdmi->hdmi_data.enc_in_bus_format == MEDIA_BUS_FMT_FIXED) hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_RGB888_1X24; /* TOFIX: Get input encoding from plat data or fallback to none */ @@ -2111,8 +2110,8 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode) else hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT; - /* TOFIX: Default to RGB888 output format */ - hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24; + if (hdmi->hdmi_data.enc_out_bus_format == MEDIA_BUS_FMT_FIXED) + hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24; hdmi->hdmi_data.pix_repet_factor = 0; hdmi->hdmi_data.hdcp_enable = 0; @@ -2390,6 +2389,277 @@ static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = .atomic_check = dw_hdmi_connector_atomic_check, }; +/* + * Possible output formats : + * - MEDIA_BUS_FMT_UYYVYY16_0_5X48, + * - MEDIA_BUS_FMT_UYYVYY12_0_5X36, + * - MEDIA_BUS_FMT_UYYVYY10_0_5X30, + * - MEDIA_BUS_FMT_UYYVYY8_0_5X24, + * - MEDIA_BUS_FMT_YUV16_1X48, + * - MEDIA_BUS_FMT_RGB161616_1X48, + * - MEDIA_BUS_FMT_UYVY12_1X24, + * - MEDIA_BUS_FMT_YUV12_1X36, + * - MEDIA_BUS_FMT_RGB121212_1X36, + * - MEDIA_BUS_FMT_UYVY10_1X20, + * - MEDIA_BUS_FMT_YUV10_1X30, + * - MEDIA_BUS_FMT_RGB101010_1X30, + * - MEDIA_BUS_FMT_UYVY8_1X16, + * - MEDIA_BUS_FMT_YUV8_1X24, + * - MEDIA_BUS_FMT_RGB888_1X24, + */ + +/* Can return a maximum of 11 possible output formats for a mode/connector */ +#define MAX_OUTPUT_SEL_FORMATS 11 + +static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + unsigned int *num_output_fmts) +{ + struct drm_connector *conn = conn_state->connector; + struct drm_display_info *info = &conn->display_info; + struct drm_display_mode *mode = &crtc_state->mode; + u8 max_bpc = conn_state->max_requested_bpc; + bool is_hdmi2_sink = info->hdmi.scdc.supported || + (info->color_formats & DRM_COLOR_FORMAT_YCRCB420); + u32 *output_fmts; + unsigned int i = 0; + + *num_output_fmts = 0; + + output_fmts = kcalloc(MAX_OUTPUT_SEL_FORMATS, sizeof(*output_fmts), + GFP_KERNEL); + if (!output_fmts) + return NULL; + + /* If dw-hdmi is the only bridge, avoid negociating with ourselves */ + if (list_is_singular(&bridge->encoder->bridge_chain)) { + *num_output_fmts = 1; + output_fmts[0] = MEDIA_BUS_FMT_FIXED; + + return output_fmts; + } + + /* + * If the current mode enforces 4:2:0, force the output but format + * to 4:2:0 and do not add the YUV422/444/RGB formats + */ + if (conn->ycbcr_420_allowed && + (drm_mode_is_420_only(info, mode) || + (is_hdmi2_sink && drm_mode_is_420_also(info, mode)))) { + + /* Order bus formats from 16bit to 8bit if supported */ + if (max_bpc >= 16 && info->bpc == 16 && + (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_48)) + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY16_0_5X48; + + if (max_bpc >= 12 && info->bpc >= 12 && + (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_36)) + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36; + + if (max_bpc >= 10 && info->bpc >= 10 && + (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_30)) + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30; + + /* Default 8bit fallback */ + output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24; + + *num_output_fmts = i; + + return output_fmts; + } + + /* + * Order bus formats from 16bit to 8bit and from YUV422 to RGB + * if supported. In any case the default RGB888 format is added + */ + + if (max_bpc >= 16 && info->bpc == 16) { + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; + + output_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; + } + + if (max_bpc >= 12 && info->bpc >= 12) { + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422) + output_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; + + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; + + output_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; + } + + if (max_bpc >= 10 && info->bpc >= 10) { + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422) + output_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; + + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; + + output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; + } + + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB422) + output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; + + if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444) + output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; + + /* Default 8bit RGB fallback */ + output_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + + *num_output_fmts = i; + + return output_fmts; +} + +/* + * Possible input formats : + * - MEDIA_BUS_FMT_RGB888_1X24 + * - MEDIA_BUS_FMT_YUV8_1X24 + * - MEDIA_BUS_FMT_UYVY8_1X16 + * - MEDIA_BUS_FMT_UYYVYY8_0_5X24 + * - MEDIA_BUS_FMT_RGB101010_1X30 + * - MEDIA_BUS_FMT_YUV10_1X30 + * - MEDIA_BUS_FMT_UYVY10_1X20 + * - MEDIA_BUS_FMT_UYYVYY10_0_5X30 + * - MEDIA_BUS_FMT_RGB121212_1X36 + * - MEDIA_BUS_FMT_YUV12_1X36 + * - MEDIA_BUS_FMT_UYVY12_1X24 + * - MEDIA_BUS_FMT_UYYVYY12_0_5X36 + * - MEDIA_BUS_FMT_RGB161616_1X48 + * - MEDIA_BUS_FMT_YUV16_1X48 + * - MEDIA_BUS_FMT_UYYVYY16_0_5X48 + */ + +/* Can return a maximum of 3 possible input formats for an output format */ +#define MAX_INPUT_SEL_FORMATS 3 + +static u32 *dw_hdmi_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; + unsigned int i = 0; + + *num_input_fmts = 0; + + input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts), + GFP_KERNEL); + if (!input_fmts) + return NULL; + + switch (output_fmt) { + /* If MEDIA_BUS_FMT_FIXED is tested, return default bus format */ + case MEDIA_BUS_FMT_FIXED: + input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; + break; + /* 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; + 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; + 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; + 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; + 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; + 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; + 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; + 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; + 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; + break; + + /* 16bit */ + case MEDIA_BUS_FMT_RGB161616_1X48: + input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; + 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; + break; + + /*YUV 4:2:0 */ + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + case MEDIA_BUS_FMT_UYYVYY12_0_5X36: + case MEDIA_BUS_FMT_UYYVYY16_0_5X48: + input_fmts[i++] = output_fmt; + break; + } + + *num_input_fmts = i; + + if (*num_input_fmts == 0) { + kfree(input_fmts); + input_fmts = NULL; + } + + return input_fmts; +} + +static int dw_hdmi_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct dw_hdmi *hdmi = bridge->driver_private; + + 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; + + 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; +} + static int dw_hdmi_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { @@ -2511,6 +2781,9 @@ static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = { .atomic_reset = drm_atomic_helper_bridge_reset, .attach = dw_hdmi_bridge_attach, .detach = dw_hdmi_bridge_detach, + .atomic_check = dw_hdmi_bridge_atomic_check, + .atomic_get_output_bus_fmts = dw_hdmi_bridge_atomic_get_output_bus_fmts, + .atomic_get_input_bus_fmts = dw_hdmi_bridge_atomic_get_input_bus_fmts, .enable = dw_hdmi_bridge_enable, .disable = dw_hdmi_bridge_disable, .mode_set = dw_hdmi_bridge_mode_set, -- 2.22.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07105C3F2DE for ; 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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id c14sm24006398wro.36.2020.03.04.02.41.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2020 02:41:02 -0800 (PST) From: Neil Armstrong To: p.zabel@pengutronix.de, heiko@sntech.de, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@siol.net, boris.brezillon@collabora.com Subject: [PATCH v5 04/11] drm/bridge: synopsys: dw-hdmi: add bus format negociation Date: Wed, 4 Mar 2020 11:40:45 +0100 Message-Id: <20200304104052.17196-5-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200304104052.17196-1-narmstrong@baylibre.com> References: <20200304104052.17196-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, 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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id c14sm24006398wro.36.2020.03.04.02.41.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2020 02:41:02 -0800 (PST) From: Neil Armstrong To: p.zabel@pengutronix.de, heiko@sntech.de, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@siol.net, boris.brezillon@collabora.com Subject: [PATCH v5 04/11] drm/bridge: synopsys: dw-hdmi: add bus format negociation Date: Wed, 4 Mar 2020 11:40:45 +0100 Message-Id: <20200304104052.17196-5-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200304104052.17196-1-narmstrong@baylibre.com> References: <20200304104052.17196-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200304_024104_346782_E3FCAB13 X-CRM114-Status: GOOD ( 16.67 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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