From patchwork Wed Oct 19 09:32:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: allen X-Patchwork-Id: 5659 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4ac7:0:0:0:0:0 with SMTP id y7csp380494wrs; Wed, 19 Oct 2022 08:12:52 -0700 (PDT) X-Google-Smtp-Source: AMsMyM7h/j2Ah73chlTldb6dt7NPujAPqq+JWg1Ml6MZ3YNfFCtWSKZuoYP4CJAdJSQBJVM1Gov2 X-Received: by 2002:a17:906:8a66:b0:78b:da52:b752 with SMTP id hy6-20020a1709068a6600b0078bda52b752mr7098487ejc.365.1666192372435; Wed, 19 Oct 2022 08:12:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666192372; cv=none; d=google.com; s=arc-20160816; b=Z5e/7wKIXuOhAeE3ZOqcRjmXMOUoOCb5lTcX1gmh6gT1rysOI0UY8VDdxTrYMqfZ36 WPLmsznbRUwyTHXt1hI2BNLYO1NGZUWLSBX1EcKegFrDXthGARNilqQBoSLPzhdQQIvh MjsYjF58YdcK2OqM1eNrzD/uzOHCEBWbHA5CpOmUgnD+6WJMxTA1R4zQrWCQe6dBh32C SZ6LFLBapEc6MACYEsYypkrY6agY9f/GmlLeeypPVAZVBHb41wfFqdVURIfBE4XIs9wR FurXRoSr59fd1TjzUQOaI02n233UBOUfZ+XA9aIQQ5nS6TlDqLPM903f58NkDdlRXpqt iA0w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:from; bh=M+gd6huBpA1PPI9nmjhz61GvO/Sy2Ctvzcx9AHQLiA8=; b=Zr879fLimSKz3goqZ1P6iNZL7C267NA0/FRE5PJaFugJbgSdCXqEHYWg2T6Re8Yem+ p3qak6eYh2b2GcnJE4GgfALPbpEPpVuVDpSsZ/W31NHXDsEKBV5HhBZFDCdk2JhNGGXk hRUusiOqu6kqlbrB/pX+yeAK9fnPDFY8zwSUFdzX8LnJahLJzAGbbuOPwLcrg+6AnWfY EYM6K6Q1M4UL489/o/rGHJo4kCymQ0QbXGWArgXidn5hFsb5VUyE6VwYm3QDSZ23dvrM Ij2xhXI8Ls2GXACheuM+CQT1vsrTQatp0E3s0LFmKlpV3Ys244fntkvPXGlTA1YGMQCz U29Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id s21-20020a056402015500b00458a650f3fasi12757062edu.409.2022.10.19.08.12.25; Wed, 19 Oct 2022 08:12:52 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232149AbiJSPLB (ORCPT + 99 others); Wed, 19 Oct 2022 11:11:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230046AbiJSPKl (ORCPT ); Wed, 19 Oct 2022 11:10:41 -0400 Received: from ironport.ite.com.tw (60-251-196-230.hinet-ip.hinet.net [60.251.196.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 705D4129758; Wed, 19 Oct 2022 08:03:34 -0700 (PDT) Received: from unknown (HELO mse.ite.com.tw) ([192.168.35.30]) by ironport.ite.com.tw with ESMTP; 19 Oct 2022 17:32:40 +0800 Received: from CSBMAIL1.internal.ite.com.tw (CSBMAIL1.internal.ite.com.tw [192.168.65.58]) by mse.ite.com.tw with ESMTP id 29J9WY3O030929; Wed, 19 Oct 2022 17:32:34 +0800 (GMT-8) (envelope-from allen.chen@ite.com.tw) Received: from VirtualBox.internal.ite.com.tw (192.168.70.46) by CSBMAIL1.internal.ite.com.tw (192.168.65.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.14; Wed, 19 Oct 2022 17:32:33 +0800 From: allen CC: Allen Chen , Pin-Yen Lin , Jau-Chih Tseng , Hermes Wu , Kenneth Hung , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , "open list:DRM DRIVERS" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list Subject: [PATCH v5 1/2] dt-bindings: it6505: add properties to restrict output bandwidth Date: Wed, 19 Oct 2022 17:32:13 +0800 Message-ID: <20221019093215.8204-2-allen.chen@ite.com.tw> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221019093215.8204-1-allen.chen@ite.com.tw> References: <20221019093215.8204-1-allen.chen@ite.com.tw> MIME-Version: 1.0 X-Originating-IP: [192.168.70.46] X-ClientProxiedBy: CSBMAIL1.internal.ite.com.tw (192.168.65.58) To CSBMAIL1.internal.ite.com.tw (192.168.65.58) X-TM-SNTS-SMTP: 0BA561C71DF04AAC8215271AAC2F2DA9A07B9C33BFD346492EB0738684481BF82002:8 X-MAIL: mse.ite.com.tw 29J9WY3O030929 X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,PDS_RDNS_DYNAMIC_FP, RDNS_DYNAMIC,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1747129333000202174?= X-GMAIL-MSGID: =?utf-8?q?1747129333000202174?= From: allen chen Add properties to restrict dp output data-lanes and clock. Signed-off-by: Pin-Yen Lin Signed-off-by: Allen Chen --- .../bindings/display/bridge/ite,it6505.yaml | 89 +++++++++++++++++-- 1 file changed, 83 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml index 833d11b2303a7..8e607b6929fc9 100644 --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml @@ -52,9 +52,70 @@ properties: maxItems: 1 description: extcon specifier for the Power Delivery - port: - $ref: /schemas/graph.yaml#/properties/port - description: A port node pointing to DPI host port node + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: A port node pointing to DPI host port node + + properties: + endpoint: + $ref: /schemas/graph.yaml#/$defs/endpoint-base + unevaluatedProperties: false + + properties: + link-frequencies: + minItems: 1 + maxItems: 1 + description: Allowed max link frequencies in Hz + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: Video port for DP output + + properties: + endpoint: + $ref: /schemas/graph.yaml#/$defs/endpoint-base + unevaluatedProperties: false + + properties: + data-lanes: + oneOf: + - minItems: 1 + maxItems: 1 + uniqueItems: true + items: + enum: + - 0 + - 1 + description: For one lane operation. + + - minItems: 2 + maxItems: 2 + uniqueItems: true + items: + enum: + - 0 + - 1 + description: For two lanes operation. + + - minItems: 4 + maxItems: 4 + uniqueItems: true + items: + enum: + - 0 + - 1 + - 2 + - 3 + description: For four lanes operation. + required: + - port@0 + - port@1 required: - compatible @@ -63,6 +124,7 @@ required: - interrupts - reset-gpios - extcon + - ports additionalProperties: false @@ -85,9 +147,24 @@ examples: reset-gpios = <&pio 179 1>; extcon = <&usbc_extcon>; - port { - it6505_in: endpoint { - remote-endpoint = <&dpi_out>; + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + it6505_in: endpoint { + remote-endpoint = <&dpi_out>; + link-frequencies = /bits/ 64 <150000000>; + }; + }; + + port@1 { + reg = <1>; + it6505_out: endpoint { + remote-endpoint = <&dp_in>; + data-lanes = <0 1>; + }; }; }; }; From patchwork Wed Oct 19 09:32:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: allen X-Patchwork-Id: 5658 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4ac7:0:0:0:0:0 with SMTP id y7csp380486wrs; Wed, 19 Oct 2022 08:12:51 -0700 (PDT) X-Google-Smtp-Source: AMsMyM449YsJm8GDCXDdIhugUlYedWD4ZPHHovQqxeIN2/tTz8aJjtza10NF1Okf4CrE9ncpOd0r X-Received: by 2002:a05:6402:90b:b0:45c:16a0:ec1e with SMTP id g11-20020a056402090b00b0045c16a0ec1emr8148978edz.427.1666192371544; Wed, 19 Oct 2022 08:12:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666192371; cv=none; d=google.com; s=arc-20160816; b=056L4XNBWHeYheYhTGzeFxHBVI2lb0lgnjfTgllwIIgmJ+MrvK0azpaaNBH0QQNJw5 O+XcAqaxl60jXwH1J3yCX+EXKNnaXm+/39foSxb3rZMXt61ShnW66A3CxdsfOchEuCq+ M/73Wq5y1uugMLlkMNipS0PSLgKcfcoSmJwMEBw1Fq8eE2DauoLxzU1l1wlXxqY20YJ4 Y3pQXQ4hHEVPWyPYBsTznnwgm08045vxsy5azwe5pXsuLJSxtjPMZIxJZ1LAdNCTTdK5 JzpBocLf70+n4thcSpciVw550H4VVlyNzetwlkXBVS4Znp0RAS//AcJnKmR3xEz8ElVf PSfQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:from; bh=Ewmr9E28IrsYhJT+ITfNeWjb7YaIlvn3KJP5fk+bn+o=; b=X8VKdjcriXYyMwuqsxauELSzBLBVG3nPHbIzwK9M1Os+JtsasEqonY9gFLihClNZkl hc5ykmhSsphIGOBRjJTiyF2Z256ONhtVEONAeFM1E6QbhLKjjRrNZJSzJe0SqJiWD2tX gEK7mMPEDxacyKZiSC1YURpRbWFTNBQWjtLh88NcZRQg1r+uawNwIG/tY1gEYAB9ebfO kCkG8qnVGY/9sFcxrr1dZBuVSquXFp+iX80Wj5pdVdm02ai2YmGt9Jq36rbVNrldNsch i2vUJyXsrk6fi1hTkm4PDPncLhoXgMiz1uRtc2RuD9JyjRVCuXgVSk6ZYeqggVjeAx6E k+MQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id a19-20020a50e713000000b00458d23f9fd5si13621105edn.242.2022.10.19.08.12.20; Wed, 19 Oct 2022 08:12:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229911AbiJSPK6 (ORCPT + 99 others); Wed, 19 Oct 2022 11:10:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232102AbiJSPKi (ORCPT ); Wed, 19 Oct 2022 11:10:38 -0400 Received: from ironport.ite.com.tw (60-251-196-230.hinet-ip.hinet.net [60.251.196.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07B88140E64 for ; Wed, 19 Oct 2022 08:03:36 -0700 (PDT) Received: from unknown (HELO mse.ite.com.tw) ([192.168.35.30]) by ironport.ite.com.tw with ESMTP; 19 Oct 2022 17:32:40 +0800 Received: from CSBMAIL1.internal.ite.com.tw (CSBMAIL1.internal.ite.com.tw [192.168.65.58]) by mse.ite.com.tw with ESMTP id 29J9WZZT030930; Wed, 19 Oct 2022 17:32:35 +0800 (GMT-8) (envelope-from allen.chen@ite.com.tw) Received: from VirtualBox.internal.ite.com.tw (192.168.70.46) by CSBMAIL1.internal.ite.com.tw (192.168.65.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.14; Wed, 19 Oct 2022 17:32:35 +0800 From: allen CC: Allen Chen , Pin-Yen Lin , Jau-Chih Tseng , Hermes Wu , Kenneth Hung , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , "open list:DRM DRIVERS" , open list Subject: [PATCH v5 2/2] drm/bridge: add it6505 driver to read data-lanes and link-frequencies from dt Date: Wed, 19 Oct 2022 17:32:14 +0800 Message-ID: <20221019093215.8204-3-allen.chen@ite.com.tw> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221019093215.8204-1-allen.chen@ite.com.tw> References: <20221019093215.8204-1-allen.chen@ite.com.tw> MIME-Version: 1.0 X-Originating-IP: [192.168.70.46] X-ClientProxiedBy: CSBMAIL1.internal.ite.com.tw (192.168.65.58) To CSBMAIL1.internal.ite.com.tw (192.168.65.58) X-TM-SNTS-SMTP: C079D62CC9F8D22120376AE71D522097792B4EAF1ABADFE62749DFEAACBC96D12002:8 X-MAIL: mse.ite.com.tw 29J9WZZT030930 X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,PDS_RDNS_DYNAMIC_FP, RDNS_DYNAMIC,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1747129332219946552?= X-GMAIL-MSGID: =?utf-8?q?1747129332219946552?= From: allen chen Add driver to read data-lanes and link-frequencies from dt property to restrict output bandwidth. Signed-off-by: Allen chen Signed-off-by: Pin-yen Lin --- drivers/gpu/drm/bridge/ite-it6505.c | 80 +++++++++++++++++++++++++++-- 1 file changed, 77 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c index a4302492cf8df..ed4536cde3140 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -437,6 +437,8 @@ struct it6505 { bool powered; bool hpd_state; u32 afe_setting; + u32 max_dpi_pixel_clock; + u32 max_lane_count; enum hdcp_state hdcp_status; struct delayed_work hdcp_work; struct work_struct hdcp_wait_ksv_list; @@ -1476,7 +1478,8 @@ static void it6505_parse_link_capabilities(struct it6505 *it6505) it6505->lane_count = link->num_lanes; DRM_DEV_DEBUG_DRIVER(dev, "Sink support %d lanes training", it6505->lane_count); - it6505->lane_count = min_t(int, it6505->lane_count, MAX_LANE_COUNT); + it6505->lane_count = min_t(int, it6505->lane_count, + it6505->max_lane_count); it6505->branch_device = drm_dp_is_branch(it6505->dpcd); DRM_DEV_DEBUG_DRIVER(dev, "Sink %sbranch device", @@ -2912,7 +2915,7 @@ it6505_bridge_mode_valid(struct drm_bridge *bridge, if (mode->flags & DRM_MODE_FLAG_INTERLACE) return MODE_NO_INTERLACE; - if (mode->clock > DPI_PIXEL_CLK_MAX) + if (mode->clock > it6505->max_dpi_pixel_clock) return MODE_CLOCK_HIGH; it6505->video_info.clock = mode->clock; @@ -3099,10 +3102,32 @@ static int it6505_init_pdata(struct it6505 *it6505) return 0; } +static int it6505_get_data_lanes_count(const struct device_node *endpoint, + const unsigned int min, + const unsigned int max) +{ + int ret; + + ret = of_property_count_u32_elems(endpoint, "data-lanes"); + if (ret < 0) + return ret; + + if (ret < min || ret > max) + return -EINVAL; + + return ret; +} + static void it6505_parse_dt(struct it6505 *it6505) { struct device *dev = &it6505->client->dev; + struct device_node *np = dev->of_node, *ep = NULL; + int len; + u64 link_frequencies; + u32 data_lanes[4]; u32 *afe_setting = &it6505->afe_setting; + u32 *max_lane_count = &it6505->max_lane_count; + u32 *max_dpi_pixel_clock = &it6505->max_dpi_pixel_clock; it6505->lane_swap_disabled = device_property_read_bool(dev, "no-laneswap"); @@ -3118,7 +3143,56 @@ static void it6505_parse_dt(struct it6505 *it6505) } else { *afe_setting = 0; } - DRM_DEV_DEBUG_DRIVER(dev, "using afe_setting: %d", *afe_setting); + + ep = of_graph_get_endpoint_by_regs(np, 1, 0); + of_node_put(ep); + + if (ep) { + len = it6505_get_data_lanes_count(ep, 1, 4); + + if (len > 0 && len != 3) { + of_property_read_u32_array(ep, "data-lanes", + data_lanes, len); + *max_lane_count = len; + } else { + *max_lane_count = MAX_LANE_COUNT; + dev_err(dev, "error data-lanes, use default"); + } + } else { + *max_lane_count = MAX_LANE_COUNT; + dev_err(dev, "error endpoint, use default"); + } + + ep = of_graph_get_endpoint_by_regs(np, 0, 0); + of_node_put(ep); + + if (ep) { + len = of_property_read_variable_u64_array(ep, + "link-frequencies", + &link_frequencies, 0, + 1); + if (len >= 0) { + do_div(link_frequencies, 1000); + if (link_frequencies > 297000) { + dev_err(dev, + "max pixel clock error, use default"); + *max_dpi_pixel_clock = DPI_PIXEL_CLK_MAX; + } else { + *max_dpi_pixel_clock = link_frequencies; + } + } else { + dev_err(dev, "error link frequencies, use default"); + *max_dpi_pixel_clock = DPI_PIXEL_CLK_MAX; + } + } else { + dev_err(dev, "error endpoint, use default"); + *max_dpi_pixel_clock = DPI_PIXEL_CLK_MAX; + } + + DRM_DEV_DEBUG_DRIVER(dev, "using afe_setting: %u, max_lane_count: %u", + it6505->afe_setting, it6505->max_lane_count); + DRM_DEV_DEBUG_DRIVER(dev, "using max_dpi_pixel_clock: %u kHz", + it6505->max_dpi_pixel_clock); } static ssize_t receive_timing_debugfs_show(struct file *file, char __user *buf,