From patchwork Thu Jan 21 07:09:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Archit Taneja X-Patchwork-Id: 8078791 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8E58DBEEED for ; Thu, 21 Jan 2016 07:10:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B0F8E205E4 for ; Thu, 21 Jan 2016 07:10:34 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 905DD205D1 for ; Thu, 21 Jan 2016 07:10:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7FBAB7211C; Wed, 20 Jan 2016 23:10:32 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 548857211A for ; Wed, 20 Jan 2016 23:10:27 -0800 (PST) Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id 4BAE360376; Thu, 21 Jan 2016 07:10:27 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 3F70B6037C; Thu, 21 Jan 2016 07:10:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (unknown [202.46.23.61]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: architt@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 29A8E60269; Thu, 21 Jan 2016 07:10:25 +0000 (UTC) From: Archit Taneja To: robdclark@gmail.com Subject: [PATCH 08/13] drm/msm/hdmi: Make hdmi core get its phy Date: Thu, 21 Jan 2016 12:39:36 +0530 Message-Id: <1453360181-31738-9-git-send-email-architt@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1453360181-31738-1-git-send-email-architt@codeaurora.org> References: <1453360181-31738-1-git-send-email-architt@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Make hdmi core get its phy by parsing the qcom,hdmi-phy phandle. The core will use this phy reference to enable/disable phy. The driver defers probe until phy isn't available. Signed-off-by: Archit Taneja --- drivers/gpu/drm/msm/hdmi/hdmi.c | 40 ++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/hdmi/hdmi.h | 2 ++ 2 files changed, 42 insertions(+) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 0fe5411..61b191d 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -81,12 +81,46 @@ static void hdmi_destroy(struct hdmi *hdmi) if (phy) phy->funcs->destroy(phy); + if (hdmi->phy_dev) { + put_device(hdmi->phy_dev); + hdmi->phy = NULL; + hdmi->phy_dev = NULL; + } + if (hdmi->i2c) hdmi_i2c_destroy(hdmi->i2c); platform_set_drvdata(hdmi->pdev, NULL); } +static int hdmi_get_phy(struct hdmi *hdmi) +{ + struct platform_device *pdev = hdmi->pdev; + struct platform_device *phy_pdev; + struct device_node *phy_node; + + phy_node = of_parse_phandle(pdev->dev.of_node, "qcom,hdmi-phy", 0); + if (!phy_node) { + dev_err(&pdev->dev, "cannot find phy device\n"); + return -ENXIO; + } + + phy_pdev = of_find_device_by_node(phy_node); + if (phy_pdev) + hdmi->phy = platform_get_drvdata(phy_pdev); + + of_node_put(phy_node); + + if (!phy_pdev || !hdmi->phy) { + dev_err(&pdev->dev, "phy driver is not ready\n"); + return -EPROBE_DEFER; + } + + hdmi->phy_dev = get_device(&phy_pdev->dev); + + return 0; +} + /* construct hdmi at bind/probe time, grab all the resources. If * we are to EPROBE_DEFER we want to do it here, rather than later * at modeset_init() time @@ -230,6 +264,12 @@ static struct hdmi *hdmi_init(struct platform_device *pdev) goto fail; } + ret = hdmi_get_phy(hdmi); + if (ret) { + dev_err(&pdev->dev, "failed to get phy\n"); + goto fail; + } + hdmi->hdcp_ctrl = hdmi_hdcp_init(hdmi); if (IS_ERR(hdmi->hdcp_ctrl)) { dev_warn(&pdev->dev, "failed to init hdcp: disabled\n"); diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h index 3404235..45347d5 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.h +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h @@ -70,6 +70,8 @@ struct hdmi { struct clk **pwr_clks; struct hdmi_phy *phy; + struct device *phy_dev; + struct i2c_adapter *i2c; struct drm_connector *connector; struct drm_bridge *bridge;