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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-02-23 10:27:32 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-02-23 10:27:32 +0100 |
| commit | 27121864ab366992583d894961ecdc6e2ffe0ca1 (patch) | |
| tree | 87ef1dcf82ce2d0d29b686d5ae81003ab3eb3b4a /drivers/acpi/video_detect.c | |
| parent | 84549c816dc317f012798e706e58669b3b013604 (diff) | |
| parent | f047382519ca41702ebaee5a862e87390f687137 (diff) | |
Merge tag 'spi-nor/for-6.3' into mtd/next
SPI NOR changes:
* small fixes on core and spansion driver.
Diffstat (limited to 'drivers/acpi/video_detect.c')
| -rw-r--r-- | drivers/acpi/video_detect.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index a934bbc9dd37..1b78c7434492 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -34,6 +34,7 @@ #include <linux/module.h> #include <linux/pci.h> #include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h> +#include <linux/pnp.h> #include <linux/types.h> #include <linux/workqueue.h> #include <acpi/video.h> @@ -105,6 +106,26 @@ static bool nvidia_wmi_ec_supported(void) } #endif +static bool apple_gmux_backlight_present(void) +{ + struct acpi_device *adev; + struct device *dev; + + adev = acpi_dev_get_first_match_dev(GMUX_ACPI_HID, NULL, -1); + if (!adev) + return false; + + dev = acpi_get_first_physical_node(adev); + if (!dev) + return false; + + /* + * drivers/platform/x86/apple-gmux.c only supports old style + * Apple GMUX with an IO-resource. + */ + return pnp_get_resource(to_pnp_dev(dev), IORESOURCE_IO, 0) != NULL; +} + /* Force to use vendor driver when the ACPI device is known to be * buggy */ static int video_detect_force_vendor(const struct dmi_system_id *d) @@ -767,7 +788,7 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) if (nvidia_wmi_ec_present) return acpi_backlight_nvidia_wmi_ec; - if (apple_gmux_present()) + if (apple_gmux_backlight_present()) return acpi_backlight_apple_gmux; /* Use ACPI video if available, except when native should be preferred. */ |