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power_domain: gpio: only run actions for children on domain

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Only run the `PM_DEVICE_ACTION_TURN_ON` and `PM_DEVICE_ACTION_TURN_OFF`
actions for child devices that have refered to the domain via the
`power-domain` property.

This prevents multiple actions being run for devices that refer to
several power domains, e.g.

```
	test_dev: test_dev {
		compatible = "test-device-pm";
		status = "okay";
		power-domain = <&test_reg_1>;
		alternate-domain = <&test_reg_chained>;
	};
```

Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
This commit is contained in:
Jordan Yates 2023-01-22 12:32:15 +10:00 • committed by Carles Cufí
commit addf405fe6
1 changed files with 25 additions and 4 deletions
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29
drivers/power_domain/power_domain_gpio.c
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@ -25,11 +25,30 @@ struct pd_gpio_data {
k_timeout_t next_boot;
};
struct pd_visitor_context {
const struct device *domain;
enum pm_device_action action;
};
static int pd_on_domain_visitor(const struct device *dev, void *context)
{
struct pd_visitor_context *visitor_context = context;
/* Only run action if the device is on the specified domain */
if (!dev->pm || (dev->pm->domain != visitor_context->domain)) {
return 0;
}
(void)pm_device_action_run(dev, visitor_context->action);
return 0;
}
static int pd_gpio_pm_action(const struct device *dev,
enum pm_device_action action)
{
const struct pd_gpio_config *cfg = dev->config;
struct pd_gpio_data *data = dev->data;
struct pd_visitor_context context = {.domain = dev};
int64_t next_boot_ticks;
int rc = 0;
@ -48,12 +67,14 @@ static int pd_gpio_pm_action(const struct device *dev,
LOG_INF("%s is now ON", dev->name);
/* Wait for domain to come up */
k_sleep(K_USEC(cfg->startup_delay_us));
/* Notify supported devices they are now powered */
pm_device_children_action_run(dev, PM_DEVICE_ACTION_TURN_ON, NULL);
/* Notify devices on the domain they are now powered */
context.action = PM_DEVICE_ACTION_TURN_ON;
(void)device_supported_foreach(dev, pd_on_domain_visitor, &context);
break;
case PM_DEVICE_ACTION_SUSPEND:
/* Notify supported devices power is going down */
pm_device_children_action_run(dev, PM_DEVICE_ACTION_TURN_OFF, NULL);
/* Notify devices on the domain that power is going down */
context.action = PM_DEVICE_ACTION_TURN_OFF;
(void)device_supported_foreach(dev, pd_on_domain_visitor, &context);
/* Switch power off */
gpio_pin_set_dt(&cfg->enable, 0);
LOG_INF("%s is now OFF", dev->name);