| /* |
| * Copyright (C) 2015 Red Hat Inc. |
| * Hans de Goede <hdegoede@redhat.com> |
| * Copyright (C) 2008 SuSE Linux Products GmbH |
| * Thomas Renninger <trenn@suse.de> |
| * |
| * May be copied or modified under the terms of the GNU General Public License |
| * |
| * video_detect.c: |
| * After PCI devices are glued with ACPI devices |
| * acpi_get_pci_dev() can be called to identify ACPI graphics |
| * devices for which a real graphics card is plugged in |
| * |
| * Depending on whether ACPI graphics extensions (cmp. ACPI spec Appendix B) |
| * are available, video.ko should be used to handle the device. |
| * |
| * Otherwise vendor specific drivers like thinkpad_acpi, asus-laptop, |
| * sony_acpi,... can take care about backlight brightness. |
| * |
| * Backlight drivers can use acpi_video_get_backlight_type() to determine which |
| * driver should handle the backlight. RAW/GPU-driver backlight drivers must |
| * use the acpi_video_backlight_use_native() helper for this. |
| * |
| * If CONFIG_ACPI_VIDEO is neither set as "compiled in" (y) nor as a module (m) |
| * this file will not be compiled and acpi_video_get_backlight_type() will |
| * always return acpi_backlight_vendor. |
| */ |
| |
| #include <linux/export.h> |
| #include <linux/acpi.h> |
| #include <linux/apple-gmux.h> |
| #include <linux/backlight.h> |
| #include <linux/dmi.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/platform_data/x86/nvidia-wmi-ec-backlight.h> |
| #include <linux/types.h> |
| #include <linux/workqueue.h> |
| #include <acpi/video.h> |
| |
| static enum acpi_backlight_type acpi_backlight_cmdline = acpi_backlight_undef; |
| static enum acpi_backlight_type acpi_backlight_dmi = acpi_backlight_undef; |
| |
| static void acpi_video_parse_cmdline(void) |
| { |
| if (!strcmp("vendor", acpi_video_backlight_string)) |
| acpi_backlight_cmdline = acpi_backlight_vendor; |
| if (!strcmp("video", acpi_video_backlight_string)) |
| acpi_backlight_cmdline = acpi_backlight_video; |
| if (!strcmp("native", acpi_video_backlight_string)) |
| acpi_backlight_cmdline = acpi_backlight_native; |
| if (!strcmp("none", acpi_video_backlight_string)) |
| acpi_backlight_cmdline = acpi_backlight_none; |
| } |
| |
| static acpi_status |
| find_video(acpi_handle handle, u32 lvl, void *context, void **rv) |
| { |
| struct acpi_device *acpi_dev = acpi_fetch_acpi_dev(handle); |
| long *cap = context; |
| struct pci_dev *dev; |
| |
| static const struct acpi_device_id video_ids[] = { |
| {ACPI_VIDEO_HID, 0}, |
| {"", 0}, |
| }; |
| |
| if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) { |
| dev = acpi_get_pci_dev(handle); |
| if (!dev) |
| return AE_OK; |
| pci_dev_put(dev); |
| *cap |= acpi_is_video_device(handle); |
| } |
| return AE_OK; |
| } |
| |
| /* This depends on ACPI_WMI which is X86 only */ |
| #ifdef CONFIG_X86 |
| static bool nvidia_wmi_ec_supported(void) |
| { |
| struct wmi_brightness_args args = { |
| .mode = WMI_BRIGHTNESS_MODE_GET, |
| .val = 0, |
| .ret = 0, |
| }; |
| struct acpi_buffer buf = { (acpi_size)sizeof(args), &args }; |
| acpi_status status; |
| |
| status = wmi_evaluate_method(WMI_BRIGHTNESS_GUID, 0, |
| WMI_BRIGHTNESS_METHOD_SOURCE, &buf, &buf); |
| if (ACPI_FAILURE(status)) |
| return false; |
| |
| /* |
| * If brightness is handled by the EC then nvidia-wmi-ec-backlight |
| * should be used, else the GPU driver(s) should be used. |
| */ |
| return args.ret == WMI_BRIGHTNESS_SOURCE_EC; |
| } |
| #else |
| static bool nvidia_wmi_ec_supported(void) |
| { |
| return false; |
| } |
| #endif |
| |
| /* 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) |
| { |
| acpi_backlight_dmi = acpi_backlight_vendor; |
| return 0; |
| } |
| |
| static int video_detect_force_video(const struct dmi_system_id *d) |
| { |
| acpi_backlight_dmi = acpi_backlight_video; |
| return 0; |
| } |
| |
| static int video_detect_force_native(const struct dmi_system_id *d) |
| { |
| acpi_backlight_dmi = acpi_backlight_native; |
| return 0; |
| } |
| |
| static int video_detect_force_none(const struct dmi_system_id *d) |
| { |
| acpi_backlight_dmi = acpi_backlight_none; |
| return 0; |
| } |
| |
| static const struct dmi_system_id video_detect_dmi_table[] = { |
| /* |
| * Models which should use the vendor backlight interface, |
| * because of broken ACPI video backlight control. |
| */ |
| { |
| /* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */ |
| .callback = video_detect_force_vendor, |
| /* Acer KAV80 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Acer"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Asus UL30VT */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Asus UL30A */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Asus X55U */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "X55U"), |
| }, |
| }, |
| { |
| /* https://bugs.launchpad.net/bugs/1000146 */ |
| .callback = video_detect_force_vendor, |
| /* Asus X101CH */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Asus X401U */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "X401U"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Asus X501U */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "X501U"), |
| }, |
| }, |
| { |
| /* https://bugs.launchpad.net/bugs/1000146 */ |
| .callback = video_detect_force_vendor, |
| /* Asus 1015CX */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Samsung N150/N210/N220 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"), |
| DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Samsung NF110/NF210/NF310 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"), |
| DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Samsung NC210 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"), |
| DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| /* Xiaomi Mi Pad 2 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"), |
| }, |
| }, |
| |
| /* |
| * Models which should use the vendor backlight interface, |
| * because of broken native backlight control. |
| */ |
| { |
| .callback = video_detect_force_vendor, |
| /* Sony Vaio PCG-FRV35 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"), |
| }, |
| }, |
| |
| /* |
| * Toshiba models with Transflective display, these need to use |
| * the toshiba_acpi vendor driver for proper Transflective handling. |
| */ |
| { |
| .callback = video_detect_force_vendor, |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R500"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_vendor, |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"), |
| }, |
| }, |
| |
| /* |
| * These models have a working acpi_video backlight control, and using |
| * native backlight causes a regression where backlight does not work |
| * when userspace is not handling brightness key events. Disable |
| * native_backlight on these to fix this: |
| * https://bugzilla.kernel.org/show_bug.cgi?id=81691 |
| */ |
| { |
| .callback = video_detect_force_video, |
| /* ThinkPad T420 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
| DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T420"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_video, |
| /* ThinkPad T520 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
| DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_video, |
| /* ThinkPad X201s */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
| DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201s"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_video, |
| /* ThinkPad X201T */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
| DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201T"), |
| }, |
| }, |
| |
| /* The native backlight controls do not work on some older machines */ |
| { |
| /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */ |
| .callback = video_detect_force_video, |
| /* HP ENVY 15 Notebook */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_video, |
| /* SAMSUNG 870Z5E/880Z5E/680Z5E */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_video, |
| /* SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, |
| "370R4E/370R4V/370R5E/3570RE/370R5V"), |
| }, |
| }, |
| { |
| /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */ |
| .callback = video_detect_force_video, |
| /* SAMSUNG 3570R/370R/470R/450R/510R/4450RV */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, |
| "3570R/370R/470R/450R/510R/4450RV"), |
| }, |
| }, |
| { |
| /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */ |
| .callback = video_detect_force_video, |
| /* SAMSUNG 670Z5E */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"), |
| }, |
| }, |
| { |
| /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */ |
| .callback = video_detect_force_video, |
| /* SAMSUNG 730U3E/740U3E */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"), |
| }, |
| }, |
| { |
| /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */ |
| .callback = video_detect_force_video, |
| /* SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, |
| "900X3C/900X3D/900X3E/900X4C/900X4D"), |
| }, |
| }, |
| { |
| /* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */ |
| .callback = video_detect_force_video, |
| /* Dell XPS14 L421X */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"), |
| }, |
| }, |
| { |
| /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */ |
| .callback = video_detect_force_video, |
| /* Dell XPS15 L521X */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"), |
| }, |
| }, |
| { |
| /* https://bugzilla.kernel.org/show_bug.cgi?id=108971 */ |
| .callback = video_detect_force_video, |
| /* SAMSUNG 530U4E/540U4E */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"), |
| }, |
| }, |
| { |
| /* 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.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_NAME, "102434U"), |
| }, |
| }, |
| { |
| .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"), |
| }, |
| }, |
| { |
| /* 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, |
| /* 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 UX303UB */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "UX303UB"), |
| }, |
| }, |
| { |
| .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"), |
| }, |
| }, |
| |
| /* |
| * Desktops which falsely report a backlight and which our heuristics |
| * for this do not catch. |
| */ |
| { |
| .callback = video_detect_force_none, |
| /* Dell OptiPlex 9020M */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_none, |
| /* GIGABYTE GB-BXBT-2807 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"), |
| }, |
| }, |
| { |
| .callback = video_detect_force_none, |
| /* MSI MS-7721 */ |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "MSI"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "MS-7721"), |
| }, |
| }, |
| { }, |
| }; |
| |
| 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. |
| */ |
| static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) |
| { |
| static DEFINE_MUTEX(init_mutex); |
| static bool nvidia_wmi_ec_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(); |
| init_done = true; |
| } |
| if (native) |
| native_available = true; |
| mutex_unlock(&init_mutex); |
| |
| /* |
| * 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; |
| |
| /* 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; |
| |
| /* No ACPI video/native (old hw), use vendor specific fw methods. */ |
| return acpi_backlight_vendor; |
| } |
| |
| enum acpi_backlight_type acpi_video_get_backlight_type(void) |
| { |
| return __acpi_video_get_backlight_type(false); |
| } |
| EXPORT_SYMBOL(acpi_video_get_backlight_type); |
| |
| bool acpi_video_backlight_use_native(void) |
| { |
| return __acpi_video_get_backlight_type(true) == acpi_backlight_native; |
| } |
| EXPORT_SYMBOL(acpi_video_backlight_use_native); |