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@xxxxxxxxxxxxxx>
---
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
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