ACPI: video: Add Apple GMUX brightness control detection
On Apple laptops with an Apple GMUX using this for brightness control, should take precedence of any other brightness control methods. Add apple-gmux detection to acpi_video_get_backlight_type() using the already existing apple_gmux_present() helper function. This will allow removig the (ab)use of: acpi_video_set_dmi_backlight_type(acpi_backlight_vendor); Inside the apple-gmux driver. Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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@ -28,6 +28,7 @@
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#include <linux/export.h>
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#include <linux/export.h>
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#include <linux/acpi.h>
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#include <linux/acpi.h>
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#include <linux/apple-gmux.h>
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#include <linux/backlight.h>
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#include <linux/backlight.h>
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#include <linux/dmi.h>
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#include <linux/dmi.h>
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#include <linux/module.h>
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#include <linux/module.h>
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@ -607,6 +608,9 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native)
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if (nvidia_wmi_ec_present)
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if (nvidia_wmi_ec_present)
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return acpi_backlight_nvidia_wmi_ec;
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return acpi_backlight_nvidia_wmi_ec;
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if (apple_gmux_present())
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return acpi_backlight_apple_gmux;
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/* On systems with ACPI video use either native or ACPI video. */
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/* On systems with ACPI video use either native or ACPI video. */
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if (video_caps & ACPI_VIDEO_BACKLIGHT) {
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if (video_caps & ACPI_VIDEO_BACKLIGHT) {
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/*
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/*
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@ -49,6 +49,7 @@ enum acpi_backlight_type {
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acpi_backlight_vendor,
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acpi_backlight_vendor,
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acpi_backlight_native,
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acpi_backlight_native,
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acpi_backlight_nvidia_wmi_ec,
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acpi_backlight_nvidia_wmi_ec,
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acpi_backlight_apple_gmux,
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};
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};
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#if IS_ENABLED(CONFIG_ACPI_VIDEO)
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#if IS_ENABLED(CONFIG_ACPI_VIDEO)
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