diff options
Diffstat (limited to 'drivers/soc/qcom/ice.c')
| -rw-r--r-- | drivers/soc/qcom/ice.c | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/drivers/soc/qcom/ice.c b/drivers/soc/qcom/ice.c index 393d2d1d275f..2310afa77b76 100644 --- a/drivers/soc/qcom/ice.c +++ b/drivers/soc/qcom/ice.c @@ -11,6 +11,7 @@ #include <linux/cleanup.h> #include <linux/clk.h> #include <linux/delay.h> +#include <linux/device.h> #include <linux/iopoll.h> #include <linux/of.h> #include <linux/of_platform.h> @@ -261,7 +262,7 @@ static struct qcom_ice *qcom_ice_create(struct device *dev, * Return: ICE pointer on success, NULL if there is no ICE data provided by the * consumer or ERR_PTR() on error. */ -struct qcom_ice *of_qcom_ice_get(struct device *dev) +static struct qcom_ice *of_qcom_ice_get(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct qcom_ice *ice; @@ -322,7 +323,53 @@ struct qcom_ice *of_qcom_ice_get(struct device *dev) return ice; } -EXPORT_SYMBOL_GPL(of_qcom_ice_get); + +static void qcom_ice_put(const struct qcom_ice *ice) +{ + struct platform_device *pdev = to_platform_device(ice->dev); + + if (!platform_get_resource_byname(pdev, IORESOURCE_MEM, "ice")) + platform_device_put(pdev); +} + +static void devm_of_qcom_ice_put(struct device *dev, void *res) +{ + qcom_ice_put(*(struct qcom_ice **)res); +} + +/** + * devm_of_qcom_ice_get() - Devres managed helper to get an ICE instance from + * a DT node. + * @dev: device pointer for the consumer device. + * + * This function will provide an ICE instance either by creating one for the + * consumer device if its DT node provides the 'ice' reg range and the 'ice' + * clock (for legacy DT style). On the other hand, if consumer provides a + * phandle via 'qcom,ice' property to an ICE DT, the ICE instance will already + * be created and so this function will return that instead. + * + * Return: ICE pointer on success, NULL if there is no ICE data provided by the + * consumer or ERR_PTR() on error. + */ +struct qcom_ice *devm_of_qcom_ice_get(struct device *dev) +{ + struct qcom_ice *ice, **dr; + + dr = devres_alloc(devm_of_qcom_ice_put, sizeof(*dr), GFP_KERNEL); + if (!dr) + return ERR_PTR(-ENOMEM); + + ice = of_qcom_ice_get(dev); + if (!IS_ERR_OR_NULL(ice)) { + *dr = ice; + devres_add(dev, dr); + } else { + devres_free(dr); + } + + return ice; +} +EXPORT_SYMBOL_GPL(devm_of_qcom_ice_get); static int qcom_ice_probe(struct platform_device *pdev) { |