ASoC: msm-cdc-pinctrl: Add support to control wakeup capable gpios
Some clock and data gpios are also treated as wakeup source capable
interrupts. Add support to control the wakeup capability based on
the usecase.
Change-Id: I32a12f004afbf04f82e40be62747b0af8836be82
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
diff --git a/asoc/codecs/msm-cdc-pinctrl.c b/asoc/codecs/msm-cdc-pinctrl.c
index 0dadb74..c611345 100644
--- a/asoc/codecs/msm-cdc-pinctrl.c
+++ b/asoc/codecs/msm-cdc-pinctrl.c
@@ -11,6 +11,7 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
+#include <linux/pinctrl/qcom-pinctrl.h>
#include <asoc/msm-cdc-pinctrl.h>
struct msm_cdc_pinctrl_info {
@@ -19,6 +20,8 @@
struct pinctrl_state *pinctrl_sleep;
int gpio;
bool state;
+ u32 tlmm_gpio;
+ bool wakeup_capable;
};
static struct msm_cdc_pinctrl_info *msm_cdc_pinctrl_get_gpiodata(
@@ -137,10 +140,34 @@
}
EXPORT_SYMBOL(msm_cdc_pinctrl_get_state);
+/*
+ * msm_cdc_pinctrl_set_wakeup_capable: Set a pinctrl to wakeup capable
+ * @np: pointer to struct device_node
+ * @enable: wakeup capable when set to true
+ *
+ * Returns 0 for success and error code for failure
+ */
+int msm_cdc_pinctrl_set_wakeup_capable(struct device_node *np, bool enable)
+{
+ struct msm_cdc_pinctrl_info *gpio_data;
+ int ret = 0;
+
+ gpio_data = msm_cdc_pinctrl_get_gpiodata(np);
+ if (!gpio_data)
+ return -EINVAL;
+
+ if (gpio_data->wakeup_capable)
+ ret = msm_gpio_mpm_wake_set(gpio_data->tlmm_gpio, enable);
+
+ return ret;
+}
+EXPORT_SYMBOL(msm_cdc_pinctrl_set_wakeup_capable);
+
static int msm_cdc_pinctrl_probe(struct platform_device *pdev)
{
int ret = 0;
struct msm_cdc_pinctrl_info *gpio_data;
+ u32 tlmm_gpio = 0;
gpio_data = devm_kzalloc(&pdev->dev,
sizeof(struct msm_cdc_pinctrl_info),
@@ -183,6 +210,12 @@
__func__, ret);
}
+ if (!of_property_read_u32(pdev->dev.of_node, "qcom,tlmm-gpio",
+ &tlmm_gpio)) {
+ gpio_data->wakeup_capable = true;
+ gpio_data->tlmm_gpio = tlmm_gpio;
+ }
+
gpio_data->gpio = of_get_named_gpio(pdev->dev.of_node,
"qcom,cdc-rst-n-gpio", 0);
if (gpio_is_valid(gpio_data->gpio)) {