[PATCH v3 0/2] drm/msm/hdmi: Use pinctrl in HDMI driver

[PATCH v3 0/2] drm/msm/hdmi: Use pinctrl in HDMI driver

[Stephane Viau]

Pinctrl support for HDMI needs a small fix before the actual implementation...

Stephane Viau (2):
  drm/msm/hdmi: Point to the right struct device
  drm/msm/hdmi: Use pinctrl in HDMI driver

 Documentation/devicetree/bindings/drm/msm/hdmi.txt |  6 +++
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c          | 43 ++++++++++++++--------
 2 files changed, 33 insertions(+), 16 deletions(-)

-- 
Qualcomm Innovation Center, Inc.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

[PATCH v3 1/2] drm/msm/hdmi: Point to the right struct device

[Stephane Viau]

DRM device's dev (hdmi->dev->dev) points to the mdss_mdp device
handle. Instead, we should get a reference to the mdss_hdmi
handle.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c | 32 +++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index 914bf95..e29b62a 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -78,14 +78,14 @@ static void hdmi_phy_reset(struct hdmi *hdmi)
 
 static int gpio_config(struct hdmi *hdmi, bool on)
 {
-	struct drm_device *dev = hdmi->dev;
+	struct device *dev = &hdmi->pdev->dev;
 	const struct hdmi_platform_config *config = hdmi->config;
 	int ret;
 
 	if (on) {
 		ret = gpio_request(config->ddc_clk_gpio, "HDMI_DDC_CLK");
 		if (ret) {
-			dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
+			dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
 				"HDMI_DDC_CLK", config->ddc_clk_gpio, ret);
 			goto error1;
 		}
@@ -93,7 +93,7 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 
 		ret = gpio_request(config->ddc_data_gpio, "HDMI_DDC_DATA");
 		if (ret) {
-			dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
+			dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
 				"HDMI_DDC_DATA", config->ddc_data_gpio, ret);
 			goto error2;
 		}
@@ -101,7 +101,7 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 
 		ret = gpio_request(config->hpd_gpio, "HDMI_HPD");
 		if (ret) {
-			dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
+			dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
 				"HDMI_HPD", config->hpd_gpio, ret);
 			goto error3;
 		}
@@ -111,7 +111,7 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 		if (config->mux_en_gpio != -1) {
 			ret = gpio_request(config->mux_en_gpio, "HDMI_MUX_EN");
 			if (ret) {
-				dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
+				dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
 					"HDMI_MUX_EN", config->mux_en_gpio, ret);
 				goto error4;
 			}
@@ -121,7 +121,7 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 		if (config->mux_sel_gpio != -1) {
 			ret = gpio_request(config->mux_sel_gpio, "HDMI_MUX_SEL");
 			if (ret) {
-				dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
+				dev_err(dev, "'%s'(%d) gpio_request failed: %d\n",
 					"HDMI_MUX_SEL", config->mux_sel_gpio, ret);
 				goto error5;
 			}
@@ -132,7 +132,7 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 			ret = gpio_request(config->mux_lpm_gpio,
 					"HDMI_MUX_LPM");
 			if (ret) {
-				dev_err(dev->dev,
+				dev_err(dev,
 					"'%s'(%d) gpio_request failed: %d\n",
 					"HDMI_MUX_LPM",
 					config->mux_lpm_gpio, ret);
@@ -185,7 +185,7 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 {
 	struct hdmi *hdmi = hdmi_connector->hdmi;
 	const struct hdmi_platform_config *config = hdmi->config;
-	struct drm_device *dev = hdmi_connector->base.dev;
+	struct device *dev = &hdmi->pdev->dev;
 	struct hdmi_phy *phy = hdmi->phy;
 	uint32_t hpd_ctrl;
 	int i, ret;
@@ -193,7 +193,7 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 	for (i = 0; i < config->hpd_reg_cnt; i++) {
 		ret = regulator_enable(hdmi->hpd_regs[i]);
 		if (ret) {
-			dev_err(dev->dev, "failed to enable hpd regulator: %s (%d)\n",
+			dev_err(dev, "failed to enable hpd regulator: %s (%d)\n",
 					config->hpd_reg_names[i], ret);
 			goto fail;
 		}
@@ -201,7 +201,7 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 
 	ret = gpio_config(hdmi, true);
 	if (ret) {
-		dev_err(dev->dev, "failed to configure GPIOs: %d\n", ret);
+		dev_err(dev, "failed to configure GPIOs: %d\n", ret);
 		goto fail;
 	}
 
@@ -210,13 +210,13 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 			ret = clk_set_rate(hdmi->hpd_clks[i],
 					config->hpd_freq[i]);
 			if (ret)
-				dev_warn(dev->dev, "failed to set clk %s (%d)\n",
+				dev_warn(dev, "failed to set clk %s (%d)\n",
 						config->hpd_clk_names[i], ret);
 		}
 
 		ret = clk_prepare_enable(hdmi->hpd_clks[i]);
 		if (ret) {
-			dev_err(dev->dev, "failed to enable hpd clk: %s (%d)\n",
+			dev_err(dev, "failed to enable hpd clk: %s (%d)\n",
 					config->hpd_clk_names[i], ret);
 			goto fail;
 		}
@@ -253,7 +253,7 @@ static void hdp_disable(struct hdmi_connector *hdmi_connector)
 {
 	struct hdmi *hdmi = hdmi_connector->hdmi;
 	const struct hdmi_platform_config *config = hdmi->config;
-	struct drm_device *dev = hdmi_connector->base.dev;
+	struct device *dev = &hdmi->pdev->dev;
 	int i, ret = 0;
 
 	/* Disable HPD interrupt */
@@ -266,12 +266,12 @@ static void hdp_disable(struct hdmi_connector *hdmi_connector)
 
 	ret = gpio_config(hdmi, false);
 	if (ret)
-		dev_warn(dev->dev, "failed to unconfigure GPIOs: %d\n", ret);
+		dev_warn(dev, "failed to unconfigure GPIOs: %d\n", ret);
 
 	for (i = 0; i < config->hpd_reg_cnt; i++) {
 		ret = regulator_disable(hdmi->hpd_regs[i]);
 		if (ret)
-			dev_warn(dev->dev, "failed to disable hpd regulator: %s (%d)\n",
+			dev_warn(dev, "failed to disable hpd regulator: %s (%d)\n",
 					config->hpd_reg_names[i], ret);
 	}
 }
@@ -483,7 +483,7 @@ struct drm_connector *hdmi_connector_init(struct hdmi *hdmi)
 
 	ret = hpd_enable(hdmi_connector);
 	if (ret) {
-		dev_err(hdmi->dev->dev, "failed to enable HPD: %d\n", ret);
+		dev_err(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
 		goto fail;
 	}
 
-- 
Qualcomm Innovation Center, Inc.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project

[PATCH v3 2/2] drm/msm/hdmi: Use pinctrl in HDMI driver

[Stephane Viau]

Some targets (eg: msm8994) use the pinctrl framework to configure
interface pins. This change adds support for initialization and
pinctrl active/sleep state control for the HDMI driver.

Signed-off-by: Stephane Viau <sviau@codeaurora.org>
---
v3:
- Use pins binding handled in driver really_probe()          [Ivan]

v2:
- Add devicetree binding documentation for pinctrl property  [Ivan]
- Use pinctrl framework's PINCTRL_STATE_DEFAULT/SLEEP states [Ivan]

 Documentation/devicetree/bindings/drm/msm/hdmi.txt |  6 ++++++
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c          | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/drm/msm/hdmi.txt b/Documentation/devicetree/bindings/drm/msm/hdmi.txt
index a29a55f..c43aa53 100644
--- a/Documentation/devicetree/bindings/drm/msm/hdmi.txt
+++ b/Documentation/devicetree/bindings/drm/msm/hdmi.txt
@@ -20,6 +20,9 @@ Required properties:
 Optional properties:
 - qcom,hdmi-tx-mux-en-gpio: hdmi mux enable pin
 - qcom,hdmi-tx-mux-sel-gpio: hdmi mux select pin
+- pinctrl-names: the pin control state names; should contain "default"
+- pinctrl-0: the default pinctrl state (active)
+- pinctrl-1: the "sleep" pinctrl state
 
 Example:
 
@@ -44,5 +47,8 @@ Example:
 		qcom,hdmi-tx-hpd = <&msmgpio 72 GPIO_ACTIVE_HIGH>;
 		core-vdda-supply = <&pm8921_hdmi_mvs>;
 		hdmi-mux-supply = <&ext_3p3v>;
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&hpd_active  &ddc_active  &cec_active>;
+		pinctrl-1 = <&hpd_suspend &ddc_suspend &cec_suspend>;
 	};
 };
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index e29b62a..ece572d 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/gpio.h>
+#include <linux/pinctrl/consumer.h>
 
 #include "msm_kms.h"
 #include "hdmi.h"
@@ -199,6 +200,12 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 		}
 	}
 
+	ret = pinctrl_pm_select_default_state(dev);
+	if (ret) {
+		dev_err(dev, "pinctrl state chg failed: %d\n", ret);
+		goto fail;
+	}
+
 	ret = gpio_config(hdmi, true);
 	if (ret) {
 		dev_err(dev, "failed to configure GPIOs: %d\n", ret);
@@ -268,6 +275,10 @@ static void hdp_disable(struct hdmi_connector *hdmi_connector)
 	if (ret)
 		dev_warn(dev, "failed to unconfigure GPIOs: %d\n", ret);
 
+	ret = pinctrl_pm_select_sleep_state(dev);
+	if (ret)
+		dev_warn(dev, "pinctrl state chg failed: %d\n", ret);
+
 	for (i = 0; i < config->hpd_reg_cnt; i++) {
 		ret = regulator_disable(hdmi->hpd_regs[i]);
 		if (ret)
-- 
Qualcomm Innovation Center, Inc.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project