kevin/linux
1
Fork 0
Code
adc218676e
linux/drivers/pci/pwrctl/Makefile

7 lines
175 B
Makefile
Raw Normal View History

PCI/pwrctl: Add PCI power control core code Some PCI devices must be powered-on before they can be detected on the bus. Introduce a simple framework reusing the existing PCI OF infrastructure. The way this works is: a DT node representing a PCI device connected to the port can be matched against its power control platform driver. If the match succeeds, the driver is responsible for powering-up the device and calling pci_pwrctl_device_set_ready() which will trigger a PCI bus rescan as well as subscribe to PCI bus notifications. When the device is detected and created, we'll make it consume the same DT node that the platform device did. When the device is bound, we'll create a device link between it and the parent power control device. Tested-by: Amit Pundir <amit.pundir@linaro.org> Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD, SM8650-QRD & SM8650-HDK Tested-by: Caleb Connolly <caleb.connolly@linaro.org> # OnePlus 8T Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20240612082019.19161-5-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-06-12 01:20:17 -07:00
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_PCI_PWRCTL) += pci-pwrctl-core.o
pci-pwrctl-core-y := core.o
PCI/pwrctl: Add a PCI power control driver for power sequenced devices Add a PCI power control driver that's capable of correctly powering up devices using the power sequencing subsystem. The first users of this driver are the ath11k module on QCA6390 and ath12k on WCN7850. These packages require a certain delay between enabling the Bluetooth and WLAN modules and the power sequencing subsystem takes care of it behind the scenes. Tested-by: Amit Pundir <amit.pundir@linaro.org> Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD, SM8650-QRD & SM8650-HDK Tested-by: Caleb Connolly <caleb.connolly@linaro.org> # OnePlus 8T Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20240612082019.19161-6-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-06-12 01:20:18 -07:00
obj-$(CONFIG_PCI_PWRCTL_PWRSEQ) += pci-pwrctl-pwrseq.o
Copy Permalink