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![Ondrej Zary](/assets/img/avatar_default.png)
Toshiba Portégé R100 has both acpi_video and toshiba_acpi vendor
backlight driver working. But none of them gets activated as it has
a VGA with no kernel driver (Trident CyberBlade XP4m32).
The DMI strings are very generic ("Portable PC") so add a custom
callback function to check for Trident CyberBlade XP4m32 PCI device
before enabling the vendor backlight driver (better than acpi_video
as it has more brightness steps).
Fixes: 5aa9d943e9
("ACPI: video: Don't enable fallback path for creating ACPI backlight by default")
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
974 lines
26 KiB
C
974 lines
26 KiB
C
/*
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* Copyright (C) 2015 Red Hat Inc.
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* Hans de Goede <hdegoede@redhat.com>
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* Copyright (C) 2008 SuSE Linux Products GmbH
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* Thomas Renninger <trenn@suse.de>
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*
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* May be copied or modified under the terms of the GNU General Public License
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*
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* video_detect.c:
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* After PCI devices are glued with ACPI devices
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* acpi_get_pci_dev() can be called to identify ACPI graphics
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* devices for which a real graphics card is plugged in
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*
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* Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B)
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* are available, video.ko should be used to handle the device.
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*
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* Otherwise vendor specific drivers like thinkpad_acpi, asus-laptop,
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* sony_acpi,... can take care about backlight brightness.
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*
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* Backlight drivers can use acpi_video_get_backlight_type() to determine which
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* driver should handle the backlight. RAW/GPU-driver backlight drivers must
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* use the acpi_video_backlight_use_native() helper for this.
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*
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* If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m)
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* this file will not be compiled and acpi_video_get_backlight_type() will
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* always return acpi_backlight_vendor.
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*/
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#include <linux/export.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/dmi.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h>
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#include <linux/pnp.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include <acpi/video.h>
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static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef;
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static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef;
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static void acpi_video_parse_cmdline(void)
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{
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if (!strcmp("vendor", acpi_video_backlight_string))
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acpi_backlight_cmdline = acpi_backlight_vendor;
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if (!strcmp("video", acpi_video_backlight_string))
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acpi_backlight_cmdline = acpi_backlight_video;
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if (!strcmp("native", acpi_video_backlight_string))
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acpi_backlight_cmdline = acpi_backlight_native;
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if (!strcmp("nvidia_wmi_ec", acpi_video_backlight_string))
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acpi_backlight_cmdline = acpi_backlight_nvidia_wmi_ec;
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if (!strcmp("apple_gmux", acpi_video_backlight_string))
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acpi_backlight_cmdline = acpi_backlight_apple_gmux;
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if (!strcmp("none", acpi_video_backlight_string))
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acpi_backlight_cmdline = acpi_backlight_none;
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}
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static acpi_status
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find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
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{
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struct acpi_device *acpi_dev = acpi_fetch_acpi_dev(handle);
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long *cap = context;
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struct pci_dev *dev;
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static const struct acpi_device_id video_ids[] = {
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{ACPI_VIDEO_HID, 0},
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{"", 0},
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};
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if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) {
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dev = acpi_get_pci_dev(handle);
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if (!dev)
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return AE_OK;
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pci_dev_put(dev);
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*cap |= acpi_is_video_device(handle);
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}
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return AE_OK;
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}
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/* This depends on ACPI_WMI which is X86 only */
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#ifdef CONFIG_X86
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static bool nvidia_wmi_ec_supported(void)
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{
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struct wmi_brightness_args args = {
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.mode = WMI_BRIGHTNESS_MODE_GET,
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.val = 0,
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.ret = 0,
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};
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struct acpi_buffer buf = { (acpi_size)sizeof(args), &args };
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acpi_status status;
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status = wmi_evaluate_method(WMI_BRIGHTNESS_GUID, 0,
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WMI_BRIGHTNESS_METHOD_SOURCE, &buf, &buf);
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if (ACPI_FAILURE(status))
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return false;
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/*
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* If brightness is handled by the EC then nvidia-wmi-ec-backlight
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* should be used, else the GPU driver(s) should be used.
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*/
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return args.ret == WMI_BRIGHTNESS_SOURCE_EC;
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}
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#else
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static bool nvidia_wmi_ec_supported(void)
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{
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return false;
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}
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#endif
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/* Force to use vendor driver when the ACPI device is known to be
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* buggy */
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static int video_detect_force_vendor(const struct dmi_system_id *d)
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{
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acpi_backlight_dmi = acpi_backlight_vendor;
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return 0;
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}
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static int video_detect_force_video(const struct dmi_system_id *d)
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{
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acpi_backlight_dmi = acpi_backlight_video;
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return 0;
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}
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static int video_detect_force_native(const struct dmi_system_id *d)
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{
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acpi_backlight_dmi = acpi_backlight_native;
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return 0;
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}
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static int video_detect_portege_r100(const struct dmi_system_id *d)
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{
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struct pci_dev *dev;
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/* Search for Trident CyberBlade XP4m32 to confirm Portégé R100 */
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dev = pci_get_device(PCI_VENDOR_ID_TRIDENT, 0x2100, NULL);
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if (dev)
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acpi_backlight_dmi = acpi_backlight_vendor;
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return 0;
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}
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static const struct dmi_system_id video_detect_dmi_table[] = {
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/*
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* Models which should use the vendor backlight interface,
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* because of broken ACPI video backlight control.
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*/
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{
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
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.callback = video_detect_force_vendor,
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/* Acer KAV80 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Asus UL30VT */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Asus UL30A */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Asus X55U */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
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},
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},
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{
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/* https://bugs.launchpad.net/bugs/1000146 */
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.callback = video_detect_force_vendor,
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/* Asus X101CH */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Asus X401U */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Asus X501U */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
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},
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},
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{
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/* https://bugs.launchpad.net/bugs/1000146 */
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.callback = video_detect_force_vendor,
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/* Asus 1015CX */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Samsung N150/N210/N220 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
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DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Samsung NF110/NF210/NF310 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
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DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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/* Samsung NC210 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
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DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
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},
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},
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/*
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* Models which should use the vendor backlight interface,
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* because of broken native backlight control.
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*/
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{
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.callback = video_detect_force_vendor,
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/* Sony Vaio PCG-FRV35 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),
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},
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},
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/*
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* Toshiba models with Transflective display, these need to use
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* the toshiba_acpi vendor driver for proper Transflective handling.
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*/
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{
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.callback = video_detect_force_vendor,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R500"),
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},
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},
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{
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.callback = video_detect_force_vendor,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"),
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},
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},
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/*
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* Toshiba Portégé R100 has working both acpi_video and toshiba_acpi
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* vendor driver. But none of them gets activated as it has a VGA with
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* no kernel driver (Trident CyberBlade XP4m32).
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* The DMI strings are generic so check for the VGA chip in callback.
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*/
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{
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.callback = video_detect_portege_r100,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
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DMI_MATCH(DMI_BOARD_NAME, "Portable PC")
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},
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},
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/*
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* Models which need acpi_video backlight control where the GPU drivers
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* do not call acpi_video_register_backlight() because no internal panel
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* is detected. Typically these are all-in-ones (monitors with builtin
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* PC) where the panel connection shows up as regular DP instead of eDP.
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*/
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{
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.callback = video_detect_force_video,
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/* Apple iMac14,1 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,1"),
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},
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},
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{
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.callback = video_detect_force_video,
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/* Apple iMac14,2 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "iMac14,2"),
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},
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},
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/*
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* These models have a working acpi_video backlight control, and using
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* native backlight causes a regression where backlight does not work
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* when userspace is not handling brightness key events. Disable
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* native_backlight on these to fix this:
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* https://bugzilla.kernel.org/show_bug.cgi?id=81691
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*/
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{
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.callback = video_detect_force_video,
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/* ThinkPad T420 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"),
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},
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},
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{
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.callback = video_detect_force_video,
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/* ThinkPad T520 */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"),
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},
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},
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{
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.callback = video_detect_force_video,
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/* ThinkPad X201s */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"),
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},
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},
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{
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.callback = video_detect_force_video,
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/* ThinkPad X201T */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201T"),
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},
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},
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/* The native backlight controls do not work on some older machines */
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{
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/* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */
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.callback = video_detect_force_video,
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/* HP ENVY 15 Notebook */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
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DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
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},
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},
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{
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.callback = video_detect_force_video,
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/* SAMSUNG 870Z5E/880Z5E/680Z5E */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"),
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},
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},
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{
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.callback = video_detect_force_video,
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/* SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME,
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"370R4E/370R4V/370R5E/3570RE/370R5V"),
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},
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},
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{
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
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.callback = video_detect_force_video,
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/* SAMSUNG 3570R/370R/470R/450R/510R/4450RV */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME,
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"3570R/370R/470R/450R/510R/4450RV"),
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},
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},
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{
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */
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.callback = video_detect_force_video,
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/* SAMSUNG 670Z5E */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"),
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},
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},
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{
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
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.callback = video_detect_force_video,
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/* SAMSUNG 730U3E/740U3E */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
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},
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},
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{
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/* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */
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.callback = video_detect_force_video,
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/* SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME,
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"900X3C/900X3D/900X3E/900X4C/900X4D"),
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},
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},
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{
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */
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.callback = video_detect_force_video,
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/* Dell XPS14 L421X */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
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},
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},
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{
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
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.callback = video_detect_force_video,
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/* Dell XPS15 L521X */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"),
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},
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},
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{
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/* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */
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.callback = video_detect_force_video,
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/* SAMSUNG 530U4E/540U4E */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
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DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
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},
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},
|
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{
|
|
/* https://bugs.launchpad.net/bugs/1894667 */
|
|
.callback = video_detect_force_video,
|
|
/* HP 635 Notebook */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
|
|
},
|
|
},
|
|
|
|
/* Non win8 machines which need native backlight nevertheless */
|
|
{
|
|
/* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */
|
|
.callback = video_detect_force_native,
|
|
/* Lenovo Ideapad S405 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.suse.com/show_bug.cgi?id=1208724 */
|
|
.callback = video_detect_force_native,
|
|
/* Lenovo Ideapad Z470 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Z470"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */
|
|
.callback = video_detect_force_native,
|
|
/* Lenovo Ideapad Z570 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Lenovo E41-25 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "81FS"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Lenovo E41-45 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Lenovo ThinkPad X131e (3371 AMD version) */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "3371"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Apple iMac11,3 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "iMac11,3"),
|
|
},
|
|
},
|
|
{
|
|
/* https://gitlab.freedesktop.org/drm/amd/-/issues/1838 */
|
|
.callback = video_detect_force_native,
|
|
/* Apple iMac12,1 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,1"),
|
|
},
|
|
},
|
|
{
|
|
/* https://gitlab.freedesktop.org/drm/amd/-/issues/2753 */
|
|
.callback = video_detect_force_native,
|
|
/* Apple iMac12,2 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,2"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
|
|
.callback = video_detect_force_native,
|
|
/* Apple MacBook Pro 12,1 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Dell Inspiron N4010 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N4010"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Dell Vostro V131 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */
|
|
.callback = video_detect_force_native,
|
|
/* Dell XPS 17 L702X */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L702X"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Dell Precision 7510 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Dell Studio 1569 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1569"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Acer Aspire 3830TG */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3830TG"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Acer Aspire 4810T */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Acer Aspire 5738z */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "JV50"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.redhat.com/show_bug.cgi?id=1012674 */
|
|
.callback = video_detect_force_native,
|
|
/* Acer Aspire 5741 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.kernel.org/show_bug.cgi?id=42993 */
|
|
.callback = video_detect_force_native,
|
|
/* Acer Aspire 5750 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.kernel.org/show_bug.cgi?id=42833 */
|
|
.callback = video_detect_force_native,
|
|
/* Acer Extensa 5235 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Acer TravelMate 4750 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */
|
|
.callback = video_detect_force_native,
|
|
/* Acer TravelMate 5735Z */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "BA51_MV"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.kernel.org/show_bug.cgi?id=36322 */
|
|
.callback = video_detect_force_native,
|
|
/* Acer TravelMate 5760 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* ASUSTeK COMPUTER INC. GA401 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "GA401"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* ASUSTeK COMPUTER INC. GA502 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "GA502"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* ASUSTeK COMPUTER INC. GA503 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "GA503"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Asus U46E */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "U46E"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Asus UX303UB */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "UX303UB"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* HP EliteBook 8460p */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 8460p"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* HP Pavilion g6-1d80nr / B4U19UA */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),
|
|
DMI_MATCH(DMI_PRODUCT_SKU, "B4U19UA"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Samsung N150P */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "N150P"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Samsung N145P/N250P/N260P */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Samsung N250P */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "N250P"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "N250P"),
|
|
},
|
|
},
|
|
{
|
|
/* https://bugzilla.kernel.org/show_bug.cgi?id=202401 */
|
|
.callback = video_detect_force_native,
|
|
/* Sony Vaio VPCEH3U1E */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Sony Vaio VPCY11S1E */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VPCY11S1E"),
|
|
},
|
|
},
|
|
|
|
/*
|
|
* These Toshibas have a broken acpi-video interface for brightness
|
|
* control. They also have an issue where the panel is off after
|
|
* suspend until a special firmware call is made to turn it back
|
|
* on. This is handled by the toshiba_acpi kernel module, so that
|
|
* module must be enabled for these models to work correctly.
|
|
*/
|
|
{
|
|
/* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
|
|
.callback = video_detect_force_native,
|
|
/* Toshiba Portégé R700 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
|
|
},
|
|
},
|
|
{
|
|
/* Portégé: https://bugs.freedesktop.org/show_bug.cgi?id=82634 */
|
|
/* Satellite: https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
|
|
.callback = video_detect_force_native,
|
|
/* Toshiba Satellite/Portégé R830 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "R830"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Toshiba Satellite/Portégé Z830 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Z830"),
|
|
},
|
|
},
|
|
|
|
/*
|
|
* Models which have nvidia-ec-wmi support, but should not use it.
|
|
* Note this indicates a likely firmware bug on these models and should
|
|
* be revisited if/when Linux gets support for dynamic mux mode.
|
|
*/
|
|
{
|
|
.callback = video_detect_force_native,
|
|
/* Dell G15 5515 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_native,
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"),
|
|
},
|
|
},
|
|
|
|
/*
|
|
* x86 android tablets which directly control the backlight through
|
|
* an external backlight controller, typically TI's LP8557.
|
|
* The backlight is directly controlled by the lp855x driver on these.
|
|
* This setup means that neither i915's native nor acpi_video backlight
|
|
* control works. Add a "vendor" quirk to disable both. Note these
|
|
* devices do not use vendor control in the typical meaning of
|
|
* vendor specific SMBIOS or ACPI calls being used.
|
|
*/
|
|
{
|
|
.callback = video_detect_force_vendor,
|
|
/* Lenovo Yoga Book X90F / X90L */
|
|
.matches = {
|
|
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
|
|
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
|
|
DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_vendor,
|
|
/*
|
|
* Lenovo Yoga Tablet 2 830F/L or 1050F/L (The 8" and 10"
|
|
* Lenovo Yoga Tablet 2 use the same mainboard)
|
|
*/
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
|
|
/* Partial match on beginning of BIOS version */
|
|
DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_vendor,
|
|
/* Lenovo Yoga Tab 3 Pro YT3-X90F */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
|
|
},
|
|
},
|
|
{
|
|
.callback = video_detect_force_vendor,
|
|
/* Xiaomi Mi Pad 2 */
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
|
|
},
|
|
},
|
|
{ },
|
|
};
|
|
|
|
static bool google_cros_ec_present(void)
|
|
{
|
|
return acpi_dev_found("GOOG0004") || acpi_dev_found("GOOG000C");
|
|
}
|
|
|
|
/*
|
|
* Windows 8 and newer no longer use the ACPI video interface, so it often
|
|
* does not work. So on win8+ systems prefer native brightness control.
|
|
* Chromebooks should always prefer native backlight control.
|
|
*/
|
|
static bool prefer_native_over_acpi_video(void)
|
|
{
|
|
return acpi_osi_is_win8() || google_cros_ec_present();
|
|
}
|
|
|
|
/*
|
|
* Determine which type of backlight interface to use on this system,
|
|
* First check cmdline, then dmi quirks, then do autodetect.
|
|
*/
|
|
enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto_detect)
|
|
{
|
|
static DEFINE_MUTEX(init_mutex);
|
|
static bool nvidia_wmi_ec_present;
|
|
static bool apple_gmux_present;
|
|
static bool native_available;
|
|
static bool init_done;
|
|
static long video_caps;
|
|
|
|
/* Parse cmdline, dmi and acpi only once */
|
|
mutex_lock(&init_mutex);
|
|
if (!init_done) {
|
|
acpi_video_parse_cmdline();
|
|
dmi_check_system(video_detect_dmi_table);
|
|
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
|
|
ACPI_UINT32_MAX, find_video, NULL,
|
|
&video_caps, NULL);
|
|
nvidia_wmi_ec_present = nvidia_wmi_ec_supported();
|
|
apple_gmux_present = apple_gmux_detect(NULL, NULL);
|
|
init_done = true;
|
|
}
|
|
if (native)
|
|
native_available = true;
|
|
mutex_unlock(&init_mutex);
|
|
|
|
if (auto_detect)
|
|
*auto_detect = false;
|
|
|
|
/*
|
|
* The below heuristics / detection steps are in order of descending
|
|
* presedence. The commandline takes presedence over anything else.
|
|
*/
|
|
if (acpi_backlight_cmdline != acpi_backlight_undef)
|
|
return acpi_backlight_cmdline;
|
|
|
|
/* DMI quirks override any autodetection. */
|
|
if (acpi_backlight_dmi != acpi_backlight_undef)
|
|
return acpi_backlight_dmi;
|
|
|
|
if (auto_detect)
|
|
*auto_detect = true;
|
|
|
|
/* Special cases such as nvidia_wmi_ec and apple gmux. */
|
|
if (nvidia_wmi_ec_present)
|
|
return acpi_backlight_nvidia_wmi_ec;
|
|
|
|
if (apple_gmux_present)
|
|
return acpi_backlight_apple_gmux;
|
|
|
|
/* Use ACPI video if available, except when native should be preferred. */
|
|
if ((video_caps & ACPI_VIDEO_BACKLIGHT) &&
|
|
!(native_available && prefer_native_over_acpi_video()))
|
|
return acpi_backlight_video;
|
|
|
|
/* Use native if available */
|
|
if (native_available)
|
|
return acpi_backlight_native;
|
|
|
|
/*
|
|
* The vendor specific BIOS interfaces are only necessary for
|
|
* laptops from before ~2008.
|
|
*
|
|
* For laptops from ~2008 till ~2023 this point is never reached
|
|
* because on those (video_caps & ACPI_VIDEO_BACKLIGHT) above is true.
|
|
*
|
|
* Laptops from after ~2023 no longer support ACPI_VIDEO_BACKLIGHT,
|
|
* if this point is reached on those, this likely means that
|
|
* the GPU kms driver which sets native_available has not loaded yet.
|
|
*
|
|
* Returning acpi_backlight_vendor in this case is known to sometimes
|
|
* cause a non working vendor specific /sys/class/backlight device to
|
|
* get registered.
|
|
*
|
|
* Return acpi_backlight_none on laptops with ACPI tables written
|
|
* for Windows 8 (laptops from after ~2012) to avoid this problem.
|
|
*/
|
|
if (acpi_osi_is_win8())
|
|
return acpi_backlight_none;
|
|
|
|
/* No ACPI video/native (old hw), use vendor specific fw methods. */
|
|
return acpi_backlight_vendor;
|
|
}
|
|
EXPORT_SYMBOL(__acpi_video_get_backlight_type);
|