diff options
| author | Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com> | 2026-04-21 16:11:01 +0530 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-04-27 09:47:15 -0500 |
| commit | 73ae5392b0cfcce02efa23ee7123d8764ef070a8 (patch) | |
| tree | 986d2b5a32c9e29f8070d6ea9013368fda204a17 /drivers | |
| parent | 254f49634ee16a731174d2ae34bc50bd5f45e731 (diff) | |
| download | linux-73ae5392b0cfcce02efa23ee7123d8764ef070a8.tar.gz linux-73ae5392b0cfcce02efa23ee7123d8764ef070a8.zip | |
PCI/pwrctrl: Move pci_pwrctrl_is_required() earlier in file
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
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pwrctrl/core.c | 84 |
1 files changed, 42 insertions, 42 deletions
diff --git a/drivers/pci/pwrctrl/core.c b/drivers/pci/pwrctrl/core.c index 97cff5b8ca88..a692aeaee81a 100644 --- a/drivers/pci/pwrctrl/core.c +++ b/drivers/pci/pwrctrl/core.c @@ -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 @@ err_power_off: } 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) { |
