From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 1e30124ac60abc41d74793900f8b4034f29bcb3d ]
On some Cherry Trail systems the GPU ACPI fwnode has power-resources which point to the PMIC, which is connected over one of the LPSS I2C controllers.
To get the suspend/resume ordering correct for this we need to be able to add device-links between the GPU and the I2c controller. The GPU is a PCI device, so this requires acpi_lpss_find_device() to also work on PCI devs.
Tested-by: Jarkko Nikula jarkko.nikula@linux.intel.com Signed-off-by: Hans de Goede hdegoede@redhat.com Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/acpi_lpss.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index 7eda27d43b482..3ef22d50df302 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -16,6 +16,7 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/mutex.h> +#include <linux/pci.h> #include <linux/platform_device.h> #include <linux/platform_data/clk-lpss.h> #include <linux/platform_data/x86/pmc_atom.h> @@ -512,12 +513,18 @@ static int match_hid_uid(struct device *dev, void *data)
static struct device *acpi_lpss_find_device(const char *hid, const char *uid) { + struct device *dev; + struct hid_uid data = { .hid = hid, .uid = uid, };
- return bus_find_device(&platform_bus_type, NULL, &data, match_hid_uid); + dev = bus_find_device(&platform_bus_type, NULL, &data, match_hid_uid); + if (dev) + return dev; + + return bus_find_device(&pci_bus_type, NULL, &data, match_hid_uid); }
static bool acpi_lpss_dep(struct acpi_device *adev, acpi_handle handle)