From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephane Viau Subject: [PATCH 1/2] drm/msm/hdmi: enable lpm-mux if it is present Date: Thu, 31 Jul 2014 11:48:49 -0400 Message-ID: <1406821730-15226-2-git-send-email-sviau@codeaurora.org> References: <1406821730-15226-1-git-send-email-sviau@codeaurora.org> Return-path: Received: from smtp.codeaurora.org ([198.145.11.231]:52005 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750852AbaGaPtS (ORCPT ); Thu, 31 Jul 2014 11:49:18 -0400 In-Reply-To: <1406821730-15226-1-git-send-email-sviau@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: freedreno@lists.freedesktop.org, robdclark@gmail.com Cc: linux-arm-msm@vger.kernel.org, gbeeresh@codeaurora.org, Stephane Viau From: Beeresh Gopal lpm-mux is programmed to enable HDMI connector on the docking station for S805 chipset based devices. Signed-off-by: Beeresh Gopal Signed-off-by: Stephane Viau --- drivers/gpu/drm/msm/hdmi/hdmi.c | 1 + drivers/gpu/drm/msm/hdmi/hdmi.h | 1 + drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 21 +++++++++++++++++++++ 3 files changed, 23 insertions(+) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index ae750f6..6229daf 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -294,6 +294,7 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data) config.hpd_gpio = get_gpio("qcom,hdmi-tx-hpd"); config.mux_en_gpio = get_gpio("qcom,hdmi-tx-mux-en"); config.mux_sel_gpio = get_gpio("qcom,hdmi-tx-mux-sel"); + config.mux_lpm_gpio = get_gpio("qcom,hdmi-tx-mux-lpm"); config.shared_irq = true; #else diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h index 9fafee6..0fb0036 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.h +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h @@ -95,6 +95,7 @@ struct hdmi_platform_config { /* gpio's: */ int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, mux_en_gpio, mux_sel_gpio; + int mux_lpm_gpio; /* older devices had their own irq, mdp5+ it is shared w/ mdp: */ bool shared_irq; diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c index 7dedfdd..113c0f8 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c @@ -78,6 +78,19 @@ static int gpio_config(struct hdmi *hdmi, bool on) } gpio_set_value_cansleep(config->mux_sel_gpio, 0); } + + if (config->mux_lpm_gpio != -1) { + ret = gpio_request(config->mux_lpm_gpio, + "HDMI_MUX_LPM"); + if (ret) { + dev_err(dev->dev, + "'%s'(%d) gpio_request failed: %d\n", + "HDMI_MUX_LPM", + config->mux_lpm_gpio, ret); + goto error6; + } + gpio_set_value_cansleep(config->mux_lpm_gpio, 1); + } DBG("gpio on"); } else { gpio_free(config->ddc_clk_gpio); @@ -93,11 +106,19 @@ static int gpio_config(struct hdmi *hdmi, bool on) gpio_set_value_cansleep(config->mux_sel_gpio, 1); gpio_free(config->mux_sel_gpio); } + + if (config->mux_lpm_gpio != -1) { + gpio_set_value_cansleep(config->mux_lpm_gpio, 0); + gpio_free(config->mux_lpm_gpio); + } DBG("gpio off"); } return 0; +error6: + if (config->mux_sel_gpio != -1) + gpio_free(config->mux_sel_gpio); error5: if (config->mux_en_gpio != -1) gpio_free(config->mux_en_gpio); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation