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PCI/pwrctrl: Move pci_pwrctrl_is_required() earlier in file

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Move pci_pwrctrl_is_required() earlier in the file so it can be used by
pci_pwrctrl_power_off_device() and pci_pwrctrl_power_on_device().

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
[bhelgaas: split to its own patch]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260421104102.12322-1-manivannan.sadhasivam@oss.qualcomm.com
This commit is contained in:
Manivannan Sadhasivam 2026-04-21 16:11:01 +05:30 committed by Bjorn Helgaas
parent 254f49634e
commit 73ae5392b0
1 changed files with 42 additions and 42 deletions
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84
drivers/pci/pwrctrl/core.c
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@ -139,6 +139,48 @@ int devm_pci_pwrctrl_device_set_ready(struct device *dev,
}
EXPORT_SYMBOL_GPL(devm_pci_pwrctrl_device_set_ready);
/*
* Check whether the pwrctrl device really needs to be created or not. The
* pwrctrl device will only be created if the node satisfies below requirements:
*
* 1. Presence of compatible property with "pci" prefix to match against the
* pwrctrl driver (AND)
* 2. At least one of the power supplies defined in the devicetree node of the
* device (OR) in the remote endpoint parent node to indicate pwrctrl
* requirement.
*/
static bool pci_pwrctrl_is_required(struct device_node *np)
{
struct device_node *endpoint;
const char *compat;
int ret;
ret = of_property_read_string(np, "compatible", &compat);
if (ret < 0)
return false;
if (!strstarts(compat, "pci"))
return false;
if (of_pci_supply_present(np))
return true;
if (of_graph_is_present(np)) {
for_each_endpoint_of_node(np, endpoint) {
struct device_node *remote __free(device_node) =
of_graph_get_remote_port_parent(endpoint);
if (remote) {
if (of_pci_supply_present(remote)) {
of_node_put(endpoint);
return true;
}
}
}
}
return false;
}
static int __pci_pwrctrl_power_off_device(struct device *dev)
{
struct pci_pwrctrl *pwrctrl = dev_get_drvdata(dev);
@ -268,48 +310,6 @@ int pci_pwrctrl_power_on_devices(struct device *parent)
}
EXPORT_SYMBOL_GPL(pci_pwrctrl_power_on_devices);
/*
* Check whether the pwrctrl device really needs to be created or not. The
* pwrctrl device will only be created if the node satisfies below requirements:
*
* 1. Presence of compatible property with "pci" prefix to match against the
* pwrctrl driver (AND)
* 2. At least one of the power supplies defined in the devicetree node of the
* device (OR) in the remote endpoint parent node to indicate pwrctrl
* requirement.
*/
static bool pci_pwrctrl_is_required(struct device_node *np)
{
struct device_node *endpoint;
const char *compat;
int ret;
ret = of_property_read_string(np, "compatible", &compat);
if (ret < 0)
return false;
if (!strstarts(compat, "pci"))
return false;
if (of_pci_supply_present(np))
return true;
if (of_graph_is_present(np)) {
for_each_endpoint_of_node(np, endpoint) {
struct device_node *remote __free(device_node) =
of_graph_get_remote_port_parent(endpoint);
if (remote) {
if (of_pci_supply_present(remote)) {
of_node_put(endpoint);
return true;
}
}
}
}
return false;
}
static int pci_pwrctrl_create_device(struct device_node *np,
struct device *parent)
{