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regulator: gpio: support input supply

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Add input supply, to create power tree.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: If67d2d545453b6b8e7d4e276ca5367bc8fb69dd1
This commit is contained in:
Elaine Zhang
2021-06-15 11:29:09 +08:00
committed by Tao Huang
parent a91414049b
commit 2ced9f1e5a
2 changed files with 17 additions and 0 deletions
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15
drivers/regulator/gpio-regulator.c
View File

@@ -241,6 +241,9 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np,
regtype);
}
if (of_find_property(np, "vin-supply", NULL))
config->input_supply = "vin";
return config;
}
@@ -275,6 +278,18 @@ static int gpio_regulator_probe(struct platform_device *pdev)
return -ENOMEM;
}
if (config->input_supply) {
drvdata->desc.supply_name = devm_kstrdup(&pdev->dev,
config->input_supply,
GFP_KERNEL);
if (!drvdata->desc.supply_name) {
dev_err(&pdev->dev,
"Failed to allocate input supply\n");
ret = -ENOMEM;
goto err_name;
}
}
if (config->nr_gpios != 0) {
drvdata->gpios = kmemdup(config->gpios,
config->nr_gpios * sizeof(struct gpio),

2
include/linux/regulator/gpio-regulator.h
View File

@@ -44,6 +44,7 @@ struct gpio_regulator_state {
/**
* struct gpio_regulator_config - config structure
* @supply_name: Name of the regulator supply
* @input_supply: Name of the regulator input supply
* @enable_gpio: GPIO to use for enable control
* set to -EINVAL if not used
* @enable_high: Polarity of enable GPIO
@@ -68,6 +69,7 @@ struct gpio_regulator_state {
*/
struct gpio_regulator_config {
const char *supply_name;
const char *input_supply;
int enable_gpio;
unsigned enable_high:1;