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| author | Peng Fan <peng.fan@nxp.com> | 2020-05-04 21:16:50 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2020-05-10 20:55:20 +0200 |
| commit | 8c0a1c6de84387ad6264d4ea6fa03e2214908960 (patch) | |
| tree | 47b366326f87c69cba3e06a2a4be51ecb76eb8b1 /drivers/power | |
| parent | e6405713d88eeed90c9428552dfc87bfb4b05ca0 (diff) | |
| download | u-boot-8c0a1c6de84387ad6264d4ea6fa03e2214908960.tar.gz | |
imx8: power: Add PD device lookup interface to power domain uclass
Add power_domain_lookup_name interface to power domain uclass to find
a power domain device by its DTB node name, not using its associated
client device.
Through this interface, we can operate the power domain devices directly.
This is needed for non-DM drivers.
Modified from Ye's NXP downstream patch
only for legacy imx8 power domain driver, since we have not migrated
to use new power domain driver.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/domain/imx8-power-domain-legacy.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/power/domain/imx8-power-domain-legacy.c b/drivers/power/domain/imx8-power-domain-legacy.c index 6f01a60b34..2c479744d3 100644 --- a/drivers/power/domain/imx8-power-domain-legacy.c +++ b/drivers/power/domain/imx8-power-domain-legacy.c @@ -19,6 +19,34 @@ struct imx8_power_domain_priv { bool state_on; }; +int imx8_power_domain_lookup_name(const char *name, + struct power_domain *power_domain) +{ + struct udevice *dev; + struct power_domain_ops *ops; + int ret; + + debug("%s(power_domain=%p name=%s)\n", __func__, power_domain, name); + + ret = uclass_get_device_by_name(UCLASS_POWER_DOMAIN, name, &dev); + if (ret) { + printf("%s fail: %s, ret = %d\n", __func__, name, ret); + return ret; + } + + ops = (struct power_domain_ops *)dev->driver->ops; + power_domain->dev = dev; + ret = ops->request(power_domain); + if (ret) { + debug("ops->request() failed: %d\n", ret); + return ret; + } + + debug("%s ok: %s\n", __func__, dev->name); + + return 0; +} + static int imx8_power_domain_request(struct power_domain *power_domain) { debug("%s(power_domain=%p)\n", __func__, power_domain); |