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782 lines
21 KiB
782 lines
21 KiB
/* |
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* Copyright (C) 2015 Red Hat Inc. |
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* Hans de Goede <[email protected]> |
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* Copyright (C) 2008 SuSE Linux Products GmbH |
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* Thomas Renninger <[email protected]> |
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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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|
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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/types.h> |
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#include <linux/workqueue.h> |
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#include <acpi/video.h> |
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|
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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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|
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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("none", acpi_video_backlight_string)) |
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acpi_backlight_cmdline = acpi_backlight_none; |
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} |
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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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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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_force_none(const struct dmi_system_id *d) |
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{ |
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acpi_backlight_dmi = acpi_backlight_none; |
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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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/* 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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.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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.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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/* GIGABYTE GB-BXBT-2807 */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"), |
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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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.callback = video_detect_force_vendor, |
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/* Sony VPCEH3U1E */ |
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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, "VPCEH3U1E"), |
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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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/* Xiaomi Mi Pad 2 */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"), |
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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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* 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 */ |
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{ |
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.callback = video_detect_force_video, |
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/* HP 635 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 635 Notebook PC"), |
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}, |
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}, |
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|
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/* Non win8 machines which need native backlight nevertheless */ |
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{ |
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */ |
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.callback = video_detect_force_native, |
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/* Lenovo Ideapad S405 */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"), |
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}, |
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}, |
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{ |
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */ |
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.callback = video_detect_force_native, |
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/* Lenovo Ideapad Z570 */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "102434U"), |
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}, |
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}, |
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{ |
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.callback = video_detect_force_native, |
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/* Lenovo E41-25 */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "81FS"), |
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}, |
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}, |
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{ |
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.callback = video_detect_force_native, |
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/* Lenovo E41-45 */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "82BK"), |
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}, |
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}, |
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{ |
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */ |
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.callback = video_detect_force_native, |
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/* Apple MacBook Pro 12,1 */ |
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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, "MacBookPro12,1"), |
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}, |
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}, |
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{ |
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.callback = video_detect_force_native, |
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/* Dell Inspiron N4010 */ |
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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, "Inspiron N4010"), |
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}, |
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}, |
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{ |
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.callback = video_detect_force_native, |
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/* Dell Vostro V131 */ |
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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, "Vostro V131"), |
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}, |
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}, |
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{ |
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */ |
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.callback = video_detect_force_native, |
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/* Dell XPS 17 L702X */ |
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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, "Dell System XPS L702X"), |
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}, |
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}, |
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{ |
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.callback = video_detect_force_native, |
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/* Dell Precision 7510 */ |
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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, "Precision 7510"), |
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}, |
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}, |
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{ |
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.callback = video_detect_force_native, |
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/* Acer Aspire 5738z */ |
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.matches = { |
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"), |
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DMI_MATCH(DMI_BOARD_NAME, "JV50"), |
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}, |
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}, |
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{ |
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/* https://bugzilla.redhat.com/show_bug.cgi?id=1012674 */ |
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.callback = video_detect_force_native, |
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/* Acer Aspire 5741 */ |
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.matches = { |
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DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"), |
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}, |
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}, |
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{ |
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/* https://bugzilla.kernel.org/show_bug.cgi?id=42993 */ |
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.callback = video_detect_force_native, |
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/* Acer Aspire 5750 */ |
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.matches = { |
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DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"), |
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}, |
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}, |
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{ |
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/* https://bugzilla.kernel.org/show_bug.cgi?id=42833 */ |
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.callback = video_detect_force_native, |
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/* Acer Extensa 5235 */ |
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.matches = { |
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DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), |
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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"), |
|
}, |
|
}, |
|
|
|
/* |
|
* 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, |
|
/* 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"); |
|
} |
|
|
|
/* |
|
* 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; |
|
|
|
/* Chromebooks should always prefer native backlight control. */ |
|
if (google_cros_ec_present() && native_available) |
|
return acpi_backlight_native; |
|
|
|
/* On systems with ACPI video use either native or ACPI video. */ |
|
if (video_caps & ACPI_VIDEO_BACKLIGHT) { |
|
/* |
|
* Windows 8 and newer no longer use the ACPI video interface, |
|
* so it often does not work. If the ACPI tables are written |
|
* for win8 and native brightness ctl is available, use that. |
|
* |
|
* The native check deliberately is inside the if acpi-video |
|
* block on older devices without acpi-video support native |
|
* is usually not the best choice. |
|
*/ |
|
if (acpi_osi_is_win8() && native_available) |
|
return acpi_backlight_native; |
|
else |
|
return acpi_backlight_video; |
|
} |
|
|
|
/* No ACPI video (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) |
|
{ |
|
/* |
|
* Call __acpi_video_get_backlight_type() to let it know that |
|
* a native backlight is available. |
|
*/ |
|
__acpi_video_get_backlight_type(true); |
|
|
|
/* |
|
* For now just always return true. There is a whole bunch of laptop |
|
* models where (video_caps & ACPI_VIDEO_BACKLIGHT) is false causing |
|
* __acpi_video_get_backlight_type() to return vendor, while these |
|
* models only have a native backlight control. |
|
*/ |
|
return true; |
|
} |
|
EXPORT_SYMBOL(acpi_video_backlight_use_native);
|
|
|