| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Gabriele Mazzotta | 3689 | 39.66% | 2 | 2.00% |
| Hans de Goede | 1396 | 15.01% | 18 | 18.00% |
| Matthew Garrett | 870 | 9.35% | 8 | 8.00% |
| Pali Rohár | 840 | 9.03% | 10 | 10.00% |
| AceLan Kao | 694 | 7.46% | 7 | 7.00% |
| Mario Limonciello | 690 | 7.42% | 6 | 6.00% |
| Keng-Yu Lin | 337 | 3.62% | 1 | 1.00% |
| Michał Kępień | 144 | 1.55% | 8 | 8.00% |
| Alan Jenkins | 119 | 1.28% | 3 | 3.00% |
| Takashi Iwai | 111 | 1.19% | 2 | 2.00% |
| Koba Ko | 102 | 1.10% | 2 | 2.00% |
| Timur Kristóf | 34 | 0.37% | 1 | 1.00% |
| Johannes Berg | 34 | 0.37% | 1 | 1.00% |
| Pacien TRAN-GIRARD | 32 | 0.34% | 1 | 1.00% |
| Perry Yuan | 25 | 0.27% | 1 | 1.00% |
| Alexander Abrosimov | 22 | 0.24% | 1 | 1.00% |
| Kai-Heng Feng | 20 | 0.22% | 1 | 1.00% |
| Stuart Hayes | 18 | 0.19% | 1 | 1.00% |
| Arvind Yadav | 15 | 0.16% | 1 | 1.00% |
| Rezwanul Kabir | 14 | 0.15% | 1 | 1.00% |
| Martin Nyhus | 13 | 0.14% | 1 | 1.00% |
| Alex Hung | 11 | 0.12% | 2 | 2.00% |
| Darren Hart | 8 | 0.09% | 1 | 1.00% |
| Colin Ian King | 7 | 0.08% | 1 | 1.00% |
| Dmitry Torokhov | 7 | 0.08% | 1 | 1.00% |
| Jonathan Woithe | 6 | 0.06% | 1 | 1.00% |
| Randy Dunlap | 6 | 0.06% | 1 | 1.00% |
| Erik Andrén | 6 | 0.06% | 1 | 1.00% |
| Gustavo A. R. Silva | 4 | 0.04% | 1 | 1.00% |
| Mathias Krause | 4 | 0.04% | 1 | 1.00% |
| Antonino A. Daplas | 4 | 0.04% | 1 | 1.00% |
| Jose Alonso | 4 | 0.04% | 1 | 1.00% |
| Andy Shevchenko | 3 | 0.03% | 1 | 1.00% |
| Wei Yongjun | 3 | 0.03% | 2 | 2.00% |
| Damien Thébault | 2 | 0.02% | 1 | 1.00% |
| Ang Way Chuang | 2 | 0.02% | 1 | 1.00% |
| Giedrius Statkevičius | 1 | 0.01% | 1 | 1.00% |
| Barnabás Pőcze | 1 | 0.01% | 1 | 1.00% |
| Thomas Gleixner | 1 | 0.01% | 1 | 1.00% |
| Lionel Debroux | 1 | 0.01% | 1 | 1.00% |
| Uwe Kleine-König | 1 | 0.01% | 1 | 1.00% |
| Laszlo Toth | 1 | 0.01% | 1 | 1.00% |
| Total | 9302 | 100 |
// SPDX-License-Identifier: GPL-2.0-only /* * Driver for Dell laptop extras * * Copyright (c) Red Hat <mjg@redhat.com> * Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com> * Copyright (c) 2014 Pali Rohár <pali@kernel.org> * * Based on documentation in the libsmbios package: * Copyright (C) 2005-2014 Dell Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/backlight.h> #include <linux/err.h> #include <linux/dmi.h> #include <linux/io.h> #include <linux/rfkill.h> #include <linux/power_supply.h> #include <linux/acpi.h> #include <linux/mm.h> #include <linux/i8042.h> #include <linux/debugfs.h> #include <linux/seq_file.h> #include <acpi/video.h> #include "dell-rbtn.h" #include "dell-smbios.h" #include "dell-wmi-privacy.h" struct quirk_entry { bool touchpad_led; bool kbd_led_not_present; bool kbd_led_levels_off_1; bool kbd_missing_ac_tag; bool needs_kbd_timeouts; /* * Ordered list of timeouts expressed in seconds. * The list must end with -1 */ int kbd_timeouts[]; }; static struct quirk_entry *quirks; static struct quirk_entry quirk_dell_vostro_v130 = { .touchpad_led = true, }; static int __init dmi_matched(const struct dmi_system_id *dmi) { quirks = dmi->driver_data; return 1; } /* * These values come from Windows utility provided by Dell. If any other value * is used then BIOS silently set timeout to 0 without any error message. */ static struct quirk_entry quirk_dell_xps13_9333 = { .needs_kbd_timeouts = true, .kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 }, }; static struct quirk_entry quirk_dell_xps13_9370 = { .kbd_missing_ac_tag = true, }; static struct quirk_entry quirk_dell_latitude_e6410 = { .kbd_led_levels_off_1 = true, }; static struct quirk_entry quirk_dell_inspiron_1012 = { .kbd_led_not_present = true, }; static struct quirk_entry quirk_dell_latitude_7520 = { .kbd_missing_ac_tag = true, }; static struct platform_driver platform_driver = { .driver = { .name = "dell-laptop", } }; static struct platform_device *platform_device; static struct backlight_device *dell_backlight_device; static struct rfkill *wifi_rfkill; static struct rfkill *bluetooth_rfkill; static struct rfkill *wwan_rfkill; static bool force_rfkill; static bool micmute_led_registered; static bool mute_led_registered; module_param(force_rfkill, bool, 0444); MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models"); static const struct dmi_system_id dell_device_table[] __initconst = { { .ident = "Dell laptop", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_CHASSIS_TYPE, "8"), }, }, { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/ }, }, { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /*Notebook*/ }, }, { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_CHASSIS_TYPE, "30"), /*Tablet*/ }, }, { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_CHASSIS_TYPE, "31"), /*Convertible*/ }, }, { .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_CHASSIS_TYPE, "32"), /*Detachable*/ }, }, { .ident = "Dell Computer Corporation", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), DMI_MATCH(DMI_CHASSIS_TYPE, "8"), }, }, { } }; MODULE_DEVICE_TABLE(dmi, dell_device_table); static const struct dmi_system_id dell_quirks[] __initconst = { { .callback = dmi_matched, .ident = "Dell Vostro V130", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro V131", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro 3350", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro 3555", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron N311z", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron M5110", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro 3360", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro 3460", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro 3560", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Vostro 3450", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron 5420", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron 5520", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron 5720", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron 7420", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron 7520", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell Inspiron 7720", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), }, .driver_data = &quirk_dell_vostro_v130, }, { .callback = dmi_matched, .ident = "Dell XPS13 9333", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"), }, .driver_data = &quirk_dell_xps13_9333, }, { .callback = dmi_matched, .ident = "Dell XPS 13 9370", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9370"), }, .driver_data = &quirk_dell_xps13_9370, }, { .callback = dmi_matched, .ident = "Dell Latitude E6410", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6410"), }, .driver_data = &quirk_dell_latitude_e6410, }, { .callback = dmi_matched, .ident = "Dell Inspiron 1012", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), }, .driver_data = &quirk_dell_inspiron_1012, }, { .callback = dmi_matched, .ident = "Dell Inspiron 1018", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1018"), }, .driver_data = &quirk_dell_inspiron_1012, }, { .callback = dmi_matched, .ident = "Dell Latitude 7520", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 7520"), }, .driver_data = &quirk_dell_latitude_7520, }, { } }; static void dell_fill_request(struct calling_interface_buffer *buffer, u32 arg0, u32 arg1, u32 arg2, u32 arg3) { memset(buffer, 0, sizeof(struct calling_interface_buffer)); buffer->input[0] = arg0; buffer->input[1] = arg1; buffer->input[2] = arg2; buffer->input[3] = arg3; } static int dell_send_request(struct calling_interface_buffer *buffer, u16 class, u16 select) { int ret; buffer->cmd_class = class; buffer->cmd_select = select; ret = dell_smbios_call(buffer); if (ret != 0) return ret; return dell_smbios_error(buffer->output[0]); } /* * Derived from information in smbios-wireless-ctl: * * cbSelect 17, Value 11 * * Return Wireless Info * cbArg1, byte0 = 0x00 * * cbRes1 Standard return codes (0, -1, -2) * cbRes2 Info bit flags: * * 0 Hardware switch supported (1) * 1 WiFi locator supported (1) * 2 WLAN supported (1) * 3 Bluetooth (BT) supported (1) * 4 WWAN supported (1) * 5 Wireless KBD supported (1) * 6 Uw b supported (1) * 7 WiGig supported (1) * 8 WLAN installed (1) * 9 BT installed (1) * 10 WWAN installed (1) * 11 Uw b installed (1) * 12 WiGig installed (1) * 13-15 Reserved (0) * 16 Hardware (HW) switch is On (1) * 17 WLAN disabled (1) * 18 BT disabled (1) * 19 WWAN disabled (1) * 20 Uw b disabled (1) * 21 WiGig disabled (1) * 20-31 Reserved (0) * * cbRes3 NVRAM size in bytes * cbRes4, byte 0 NVRAM format version number * * * Set QuickSet Radio Disable Flag * cbArg1, byte0 = 0x01 * cbArg1, byte1 * Radio ID value: * 0 Radio Status * 1 WLAN ID * 2 BT ID * 3 WWAN ID * 4 UWB ID * 5 WIGIG ID * cbArg1, byte2 Flag bits: * 0 QuickSet disables radio (1) * 1-7 Reserved (0) * * cbRes1 Standard return codes (0, -1, -2) * cbRes2 QuickSet (QS) radio disable bit map: * 0 QS disables WLAN * 1 QS disables BT * 2 QS disables WWAN * 3 QS disables UWB * 4 QS disables WIGIG * 5-31 Reserved (0) * * Wireless Switch Configuration * cbArg1, byte0 = 0x02 * * cbArg1, byte1 * Subcommand: * 0 Get config * 1 Set config * 2 Set WiFi locator enable/disable * cbArg1,byte2 * Switch settings (if byte 1==1): * 0 WLAN sw itch control (1) * 1 BT sw itch control (1) * 2 WWAN sw itch control (1) * 3 UWB sw itch control (1) * 4 WiGig sw itch control (1) * 5-7 Reserved (0) * cbArg1, byte2 Enable bits (if byte 1==2): * 0 Enable WiFi locator (1) * * cbRes1 Standard return codes (0, -1, -2) * cbRes2 QuickSet radio disable bit map: * 0 WLAN controlled by sw itch (1) * 1 BT controlled by sw itch (1) * 2 WWAN controlled by sw itch (1) * 3 UWB controlled by sw itch (1) * 4 WiGig controlled by sw itch (1) * 5-6 Reserved (0) * 7 Wireless sw itch config locked (1) * 8 WiFi locator enabled (1) * 9-14 Reserved (0) * 15 WiFi locator setting locked (1) * 16-31 Reserved (0) * * Read Local Config Data (LCD) * cbArg1, byte0 = 0x10 * cbArg1, byte1 NVRAM index low byte * cbArg1, byte2 NVRAM index high byte * cbRes1 Standard return codes (0, -1, -2) * cbRes2 4 bytes read from LCD[index] * cbRes3 4 bytes read from LCD[index+4] * cbRes4 4 bytes read from LCD[index+8] * * Write Local Config Data (LCD) * cbArg1, byte0 = 0x11 * cbArg1, byte1 NVRAM index low byte * cbArg1, byte2 NVRAM index high byte * cbArg2 4 bytes to w rite at LCD[index] * cbArg3 4 bytes to w rite at LCD[index+4] * cbArg4 4 bytes to w rite at LCD[index+8] * cbRes1 Standard return codes (0, -1, -2) * * Populate Local Config Data from NVRAM * cbArg1, byte0 = 0x12 * cbRes1 Standard return codes (0, -1, -2) * * Commit Local Config Data to NVRAM * cbArg1, byte0 = 0x13 * cbRes1 Standard return codes (0, -1, -2) */ static int dell_rfkill_set(void *data, bool blocked) { int disable = blocked ? 1 : 0; unsigned long radio = (unsigned long)data; int hwswitch_bit = (unsigned long)data - 1; struct calling_interface_buffer buffer; int hwswitch; int status; int ret; dell_fill_request(&buffer, 0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); if (ret) return ret; status = buffer.output[1]; dell_fill_request(&buffer, 0x2, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); if (ret) return ret; hwswitch = buffer.output[1]; /* If the hardware switch controls this radio, and the hardware switch is disabled, always disable the radio */ if (ret == 0 && (hwswitch & BIT(hwswitch_bit)) && (status & BIT(0)) && !(status & BIT(16))) disable = 1; dell_fill_request(&buffer, 1 | (radio<<8) | (disable << 16), 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); return ret; } static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio, int status) { if (status & BIT(0)) { /* Has hw-switch, sync sw_state to BIOS */ struct calling_interface_buffer buffer; int block = rfkill_blocked(rfkill); dell_fill_request(&buffer, 1 | (radio << 8) | (block << 16), 0, 0, 0); dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); } else { /* No hw-switch, sync BIOS state to sw_state */ rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16))); } } static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio, int status, int hwswitch) { if (hwswitch & (BIT(radio - 1))) rfkill_set_hw_state(rfkill, !(status & BIT(16))); } static void dell_rfkill_query(struct rfkill *rfkill, void *data) { int radio = ((unsigned long)data & 0xF); struct calling_interface_buffer buffer; int hwswitch; int status; int ret; dell_fill_request(&buffer, 0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); status = buffer.output[1]; if (ret != 0 || !(status & BIT(0))) { return; } dell_fill_request(&buffer, 0x2, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); hwswitch = buffer.output[1]; if (ret != 0) return; dell_rfkill_update_hw_state(rfkill, radio, status, hwswitch); } static const struct rfkill_ops dell_rfkill_ops = { .set_block = dell_rfkill_set, .query = dell_rfkill_query, }; static struct dentry *dell_laptop_dir; static int dell_debugfs_show(struct seq_file *s, void *data) { struct calling_interface_buffer buffer; int hwswitch_state; int hwswitch_ret; int status; int ret; dell_fill_request(&buffer, 0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); if (ret) return ret; status = buffer.output[1]; dell_fill_request(&buffer, 0x2, 0, 0, 0); hwswitch_ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); if (hwswitch_ret) return hwswitch_ret; hwswitch_state = buffer.output[1]; seq_printf(s, "return:\t%d\n", ret); seq_printf(s, "status:\t0x%X\n", status); seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n", status & BIT(0)); seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n", (status & BIT(1)) >> 1); seq_printf(s, "Bit 2 : Wifi is supported: %lu\n", (status & BIT(2)) >> 2); seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n", (status & BIT(3)) >> 3); seq_printf(s, "Bit 4 : WWAN is supported: %lu\n", (status & BIT(4)) >> 4); seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n", (status & BIT(5)) >> 5); seq_printf(s, "Bit 6 : UWB supported: %lu\n", (status & BIT(6)) >> 6); seq_printf(s, "Bit 7 : WiGig supported: %lu\n", (status & BIT(7)) >> 7); seq_printf(s, "Bit 8 : Wifi is installed: %lu\n", (status & BIT(8)) >> 8); seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n", (status & BIT(9)) >> 9); seq_printf(s, "Bit 10: WWAN is installed: %lu\n", (status & BIT(10)) >> 10); seq_printf(s, "Bit 11: UWB installed: %lu\n", (status & BIT(11)) >> 11); seq_printf(s, "Bit 12: WiGig installed: %lu\n", (status & BIT(12)) >> 12); seq_printf(s, "Bit 16: Hardware switch is on: %lu\n", (status & BIT(16)) >> 16); seq_printf(s, "Bit 17: Wifi is blocked: %lu\n", (status & BIT(17)) >> 17); seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n", (status & BIT(18)) >> 18); seq_printf(s, "Bit 19: WWAN is blocked: %lu\n", (status & BIT(19)) >> 19); seq_printf(s, "Bit 20: UWB is blocked: %lu\n", (status & BIT(20)) >> 20); seq_printf(s, "Bit 21: WiGig is blocked: %lu\n", (status & BIT(21)) >> 21); seq_printf(s, "\nhwswitch_return:\t%d\n", hwswitch_ret); seq_printf(s, "hwswitch_state:\t0x%X\n", hwswitch_state); seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n", hwswitch_state & BIT(0)); seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n", (hwswitch_state & BIT(1)) >> 1); seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n", (hwswitch_state & BIT(2)) >> 2); seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n", (hwswitch_state & BIT(3)) >> 3); seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n", (hwswitch_state & BIT(4)) >> 4); seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n", (hwswitch_state & BIT(7)) >> 7); seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n", (hwswitch_state & BIT(8)) >> 8); seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n", (hwswitch_state & BIT(15)) >> 15); return 0; } DEFINE_SHOW_ATTRIBUTE(dell_debugfs); static void dell_update_rfkill(struct work_struct *ignored) { struct calling_interface_buffer buffer; int hwswitch = 0; int status; int ret; dell_fill_request(&buffer, 0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); status = buffer.output[1]; if (ret != 0) return; dell_fill_request(&buffer, 0x2, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); if (ret == 0 && (status & BIT(0))) hwswitch = buffer.output[1]; if (wifi_rfkill) { dell_rfkill_update_hw_state(wifi_rfkill, 1, status, hwswitch); dell_rfkill_update_sw_state(wifi_rfkill, 1, status); } if (bluetooth_rfkill) { dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status, hwswitch); dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status); } if (wwan_rfkill) { dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch); dell_rfkill_update_sw_state(wwan_rfkill, 3, status); } } static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, struct serio *port) { static bool extended; if (str & I8042_STR_AUXDATA) return false; if (unlikely(data == 0xe0)) { extended = true; return false; } else if (unlikely(extended)) { switch (data) { case 0x8: schedule_delayed_work(&dell_rfkill_work, round_jiffies_relative(HZ / 4)); break; } extended = false; } return false; } static int (*dell_rbtn_notifier_register_func)(struct notifier_block *); static int (*dell_rbtn_notifier_unregister_func)(struct notifier_block *); static int dell_laptop_rbtn_notifier_call(struct notifier_block *nb, unsigned long action, void *data) { schedule_delayed_work(&dell_rfkill_work, 0); return NOTIFY_OK; } static struct notifier_block dell_laptop_rbtn_notifier = { .notifier_call = dell_laptop_rbtn_notifier_call, }; static int __init dell_setup_rfkill(void) { struct calling_interface_buffer buffer; int status, ret, whitelisted; const char *product; /* * rfkill support causes trouble on various models, mostly Inspirons. * So we whitelist certain series, and don't support rfkill on others. */ whitelisted = 0; product = dmi_get_system_info(DMI_PRODUCT_NAME); if (product && (strncmp(product, "Latitude", 8) == 0 || strncmp(product, "Precision", 9) == 0)) whitelisted = 1; if (!force_rfkill && !whitelisted) return 0; dell_fill_request(&buffer, 0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL); status = buffer.output[1]; /* dell wireless info smbios call is not supported */ if (ret != 0) return 0; /* rfkill is only tested on laptops with a hwswitch */ if (!(status & BIT(0)) && !force_rfkill) return 0; if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) { wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev, RFKILL_TYPE_WLAN, &dell_rfkill_ops, (void *) 1); if (!wifi_rfkill) { ret = -ENOMEM; goto err_wifi; } ret = rfkill_register(wifi_rfkill); if (ret) goto err_wifi; } if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { bluetooth_rfkill = rfkill_alloc("dell-bluetooth", &platform_device->dev, RFKILL_TYPE_BLUETOOTH, &dell_rfkill_ops, (void *) 2); if (!bluetooth_rfkill) { ret = -ENOMEM; goto err_bluetooth; } ret = rfkill_register(bluetooth_rfkill); if (ret) goto err_bluetooth; } if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { wwan_rfkill = rfkill_alloc("dell-wwan", &platform_device->dev, RFKILL_TYPE_WWAN, &dell_rfkill_ops, (void *) 3); if (!wwan_rfkill) { ret = -ENOMEM; goto err_wwan; } ret = rfkill_register(wwan_rfkill); if (ret) goto err_wwan; } /* * Dell Airplane Mode Switch driver (dell-rbtn) supports ACPI devices * which can receive events from HW slider switch. * * Dell SMBIOS on whitelisted models supports controlling radio devices * but does not support receiving HW button switch events. We can use * i8042 filter hook function to receive keyboard data and handle * keycode for HW button. * * So if it is possible we will use Dell Airplane Mode Switch ACPI * driver for receiving HW events and Dell SMBIOS for setting rfkill * states. If ACPI driver or device is not available we will fallback to * i8042 filter hook function. * * To prevent duplicate rfkill devices which control and do same thing, * dell-rbtn driver will automatically remove its own rfkill devices * once function dell_rbtn_notifier_register() is called. */ dell_rbtn_notifier_register_func = symbol_request(dell_rbtn_notifier_register); if (dell_rbtn_notifier_register_func) { dell_rbtn_notifier_unregister_func = symbol_request(dell_rbtn_notifier_unregister); if (!dell_rbtn_notifier_unregister_func) { symbol_put(dell_rbtn_notifier_register); dell_rbtn_notifier_register_func = NULL; } } if (dell_rbtn_notifier_register_func) { ret = dell_rbtn_notifier_register_func( &dell_laptop_rbtn_notifier); symbol_put(dell_rbtn_notifier_register); dell_rbtn_notifier_register_func = NULL; if (ret != 0) { symbol_put(dell_rbtn_notifier_unregister); dell_rbtn_notifier_unregister_func = NULL; } } else { pr_info("Symbols from dell-rbtn acpi driver are not available\n"); ret = -ENODEV; } if (ret == 0) { pr_info("Using dell-rbtn acpi driver for receiving events\n"); } else if (ret != -ENODEV) { pr_warn("Unable to register dell rbtn notifier\n"); goto err_filter; } else { ret = i8042_install_filter(dell_laptop_i8042_filter); if (ret) { pr_warn("Unable to install key filter\n"); goto err_filter; } pr_info("Using i8042 filter function for receiving events\n"); } return 0; err_filter: if (wwan_rfkill) rfkill_unregister(wwan_rfkill); err_wwan: rfkill_destroy(wwan_rfkill); if (bluetooth_rfkill) rfkill_unregister(bluetooth_rfkill); err_bluetooth: rfkill_destroy(bluetooth_rfkill); if (wifi_rfkill) rfkill_unregister(wifi_rfkill); err_wifi: rfkill_destroy(wifi_rfkill); return ret; } static void dell_cleanup_rfkill(void) { if (dell_rbtn_notifier_unregister_func) { dell_rbtn_notifier_unregister_func(&dell_laptop_rbtn_notifier); symbol_put(dell_rbtn_notifier_unregister); dell_rbtn_notifier_unregister_func = NULL; } else { i8042_remove_filter(dell_laptop_i8042_filter); } cancel_delayed_work_sync(&dell_rfkill_work); if (wifi_rfkill) { rfkill_unregister(wifi_rfkill); rfkill_destroy(wifi_rfkill); } if (bluetooth_rfkill) { rfkill_unregister(bluetooth_rfkill); rfkill_destroy(bluetooth_rfkill); } if (wwan_rfkill) { rfkill_unregister(wwan_rfkill); rfkill_destroy(wwan_rfkill); } } static int dell_send_intensity(struct backlight_device *bd) { struct calling_interface_buffer buffer; struct calling_interface_token *token; int ret; token = dell_smbios_find_token(BRIGHTNESS_TOKEN); if (!token) return -ENODEV; dell_fill_request(&buffer, token->location, bd->props.brightness, 0, 0); if (power_supply_is_system_supplied() > 0) ret = dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_AC); else ret = dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_BAT); return ret; } static int dell_get_intensity(struct backlight_device *bd) { struct calling_interface_buffer buffer; struct calling_interface_token *token; int ret; token = dell_smbios_find_token(BRIGHTNESS_TOKEN); if (!token) return -ENODEV; dell_fill_request(&buffer, token->location, 0, 0, 0); if (power_supply_is_system_supplied() > 0) ret = dell_send_request(&buffer, CLASS_TOKEN_READ, SELECT_TOKEN_AC); else ret = dell_send_request(&buffer, CLASS_TOKEN_READ, SELECT_TOKEN_BAT); if (ret == 0) ret = buffer.output[1]; return ret; } static const struct backlight_ops dell_ops = { .get_brightness = dell_get_intensity, .update_status = dell_send_intensity, }; static void touchpad_led_on(void) { int command = 0x97; char data = 1; i8042_command(&data, command | 1 << 12); } static void touchpad_led_off(void) { int command = 0x97; char data = 2; i8042_command(&data, command | 1 << 12); } static void touchpad_led_set(struct led_classdev *led_cdev, enum led_brightness value) { if (value > 0) touchpad_led_on(); else touchpad_led_off(); } static struct led_classdev touchpad_led = { .name = "dell-laptop::touchpad", .brightness_set = touchpad_led_set, .flags = LED_CORE_SUSPENDRESUME, }; static int __init touchpad_led_init(struct device *dev) { return led_classdev_register(dev, &touchpad_led); } static void touchpad_led_exit(void) { led_classdev_unregister(&touchpad_led); } /* * Derived from information in smbios-keyboard-ctl: * * cbClass 4 * cbSelect 11 * Keyboard illumination * cbArg1 determines the function to be performed * * cbArg1 0x0 = Get Feature Information * cbRES1 Standard return codes (0, -1, -2) * cbRES2, word0 Bitmap of user-selectable modes * bit 0 Always off (All systems) * bit 1 Always on (Travis ATG, Siberia) * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off * bit 4 Auto: Input-activity-based On; input-activity based Off * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off * bits 9-15 Reserved for future use * cbRES2, byte2 Reserved for future use * cbRES2, byte3 Keyboard illumination type * 0 Reserved * 1 Tasklight * 2 Backlight * 3-255 Reserved for future use * cbRES3, byte0 Supported auto keyboard illumination trigger bitmap. * bit 0 Any keystroke * bit 1 Touchpad activity * bit 2 Pointing stick * bit 3 Any mouse * bits 4-7 Reserved for future use * cbRES3, byte1 Supported timeout unit bitmap * bit 0 Seconds * bit 1 Minutes * bit 2 Hours * bit 3 Days * bits 4-7 Reserved for future use * cbRES3, byte2 Number of keyboard light brightness levels * cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported). * cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported). * cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported). * cbRES4, byte3 Maximum acceptable days value (0 if days not supported) * * cbArg1 0x1 = Get Current State * cbRES1 Standard return codes (0, -1, -2) * cbRES2, word0 Bitmap of current mode state * bit 0 Always off (All systems) * bit 1 Always on (Travis ATG, Siberia) * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off * bit 4 Auto: Input-activity-based On; input-activity based Off * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off * bits 9-15 Reserved for future use * Note: Only One bit can be set * cbRES2, byte2 Currently active auto keyboard illumination triggers. * bit 0 Any keystroke * bit 1 Touchpad activity * bit 2 Pointing stick * bit 3 Any mouse * bits 4-7 Reserved for future use * cbRES2, byte3 Current Timeout on battery * bits 7:6 Timeout units indicator: * 00b Seconds * 01b Minutes * 10b Hours * 11b Days * bits 5:0 Timeout value (0-63) in sec/min/hr/day * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte * are set upon return from the [Get feature information] call. * cbRES3, byte0 Current setting of ALS value that turns the light on or off. * cbRES3, byte1 Current ALS reading * cbRES3, byte2 Current keyboard light level. * cbRES3, byte3 Current timeout on AC Power * bits 7:6 Timeout units indicator: * 00b Seconds * 01b Minutes * 10b Hours * 11b Days * Bits 5:0 Timeout value (0-63) in sec/min/hr/day * NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte2 * are set upon return from the upon return from the [Get Feature information] call. * * cbArg1 0x2 = Set New State * cbRES1 Standard return codes (0, -1, -2) * cbArg2, word0 Bitmap of current mode state * bit 0 Always off (All systems) * bit 1 Always on (Travis ATG, Siberia) * bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG) * bit 3 Auto: ALS- and input-activity-based On; input-activity based Off * bit 4 Auto: Input-activity-based On; input-activity based Off * bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off * bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off * bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off * bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off * bits 9-15 Reserved for future use * Note: Only One bit can be set * cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow * keyboard to turn off automatically. * bit 0 Any keystroke * bit 1 Touchpad activity * bit 2 Pointing stick * bit 3 Any mouse * bits 4-7 Reserved for future use * cbArg2, byte3 Desired Timeout on battery * bits 7:6 Timeout units indicator: * 00b Seconds * 01b Minutes * 10b Hours * 11b Days * bits 5:0 Timeout value (0-63) in sec/min/hr/day * cbArg3, byte0 Desired setting of ALS value that turns the light on or off. * cbArg3, byte2 Desired keyboard light level. * cbArg3, byte3 Desired Timeout on AC power * bits 7:6 Timeout units indicator: * 00b Seconds * 01b Minutes * 10b Hours * 11b Days * bits 5:0 Timeout value (0-63) in sec/min/hr/day */ enum kbd_timeout_unit { KBD_TIMEOUT_SECONDS = 0, KBD_TIMEOUT_MINUTES, KBD_TIMEOUT_HOURS, KBD_TIMEOUT_DAYS, }; enum kbd_mode_bit { KBD_MODE_BIT_OFF = 0, KBD_MODE_BIT_ON, KBD_MODE_BIT_ALS, KBD_MODE_BIT_TRIGGER_ALS, KBD_MODE_BIT_TRIGGER, KBD_MODE_BIT_TRIGGER_25, KBD_MODE_BIT_TRIGGER_50, KBD_MODE_BIT_TRIGGER_75, KBD_MODE_BIT_TRIGGER_100, }; #define kbd_is_als_mode_bit(bit) \ ((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS) #define kbd_is_trigger_mode_bit(bit) \ ((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100) #define kbd_is_level_mode_bit(bit) \ ((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100) struct kbd_info { u16 modes; u8 type; u8 triggers; u8 levels; u8 seconds; u8 minutes; u8 hours; u8 days; }; struct kbd_state { u8 mode_bit; u8 triggers; u8 timeout_value; u8 timeout_unit; u8 timeout_value_ac; u8 timeout_unit_ac; u8 als_setting; u8 als_value; u8 level; }; static const int kbd_tokens[] = { KBD_LED_OFF_TOKEN, KBD_LED_AUTO_25_TOKEN, KBD_LED_AUTO_50_TOKEN, KBD_LED_AUTO_75_TOKEN, KBD_LED_AUTO_100_TOKEN, KBD_LED_ON_TOKEN, }; static u16 kbd_token_bits; static struct kbd_info kbd_info; static bool kbd_als_supported; static bool kbd_triggers_supported; static bool kbd_timeout_ac_supported; static u8 kbd_mode_levels[16]; static int kbd_mode_levels_count; static u8 kbd_previous_level; static u8 kbd_previous_mode_bit; static bool kbd_led_present; static DEFINE_MUTEX(kbd_led_mutex); static enum led_brightness kbd_led_level; /* * NOTE: there are three ways to set the keyboard backlight level. * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value). * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels). * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens) * * There are laptops which support only one of these methods. If we want to * support as many machines as possible we need to implement all three methods. * The first two methods use the kbd_state structure. The third uses SMBIOS * tokens. If kbd_info.levels == 0, the machine does not support setting the * keyboard backlight level via kbd_state.level. */ static int kbd_get_info(struct kbd_info *info) { struct calling_interface_buffer buffer; u8 units; int ret; dell_fill_request(&buffer, 0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT); if (ret) return ret; info->modes = buffer.output[1] & 0xFFFF; info->type = (buffer.output[1] >> 24) & 0xFF; info->triggers = buffer.output[2] & 0xFF; units = (buffer.output[2] >> 8) & 0xFF; info->levels = (buffer.output[2] >> 16) & 0xFF; if (quirks && quirks->kbd_led_levels_off_1 && info->levels) info->levels--; if (units & BIT(0)) info->seconds = (buffer.output[3] >> 0) & 0xFF; if (units & BIT(1)) info->minutes = (buffer.output[3] >> 8) & 0xFF; if (units & BIT(2)) info->hours = (buffer.output[3] >> 16) & 0xFF; if (units & BIT(3)) info->days = (buffer.output[3] >> 24) & 0xFF; return ret; } static unsigned int kbd_get_max_level(void) { if (kbd_info.levels != 0) return kbd_info.levels; if (kbd_mode_levels_count > 0) return kbd_mode_levels_count - 1; return 0; } static int kbd_get_level(struct kbd_state *state) { int i; if (kbd_info.levels != 0) return state->level; if (kbd_mode_levels_count > 0) { for (i = 0; i < kbd_mode_levels_count; ++i) if (kbd_mode_levels[i] == state->mode_bit) return i; return 0; } return -EINVAL; } static int kbd_set_level(struct kbd_state *state, u8 level) { if (kbd_info.levels != 0) { if (level != 0) kbd_previous_level = level; if (state->level == level) return 0; state->level = level; if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF) state->mode_bit = kbd_previous_mode_bit; else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) { kbd_previous_mode_bit = state->mode_bit; state->mode_bit = KBD_MODE_BIT_OFF; } return 0; } if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) { if (level != 0) kbd_previous_level = level; state->mode_bit = kbd_mode_levels[level]; return 0; } return -EINVAL; } static int kbd_get_state(struct kbd_state *state) { struct calling_interface_buffer buffer; int ret; dell_fill_request(&buffer, 0x1, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT); if (ret) return ret; state->mode_bit = ffs(buffer.output[1] & 0xFFFF); if (state->mode_bit != 0) state->mode_bit--; state->triggers = (buffer.output[1] >> 16) & 0xFF; state->timeout_value = (buffer.output[1] >> 24) & 0x3F; state->timeout_unit = (buffer.output[1] >> 30) & 0x3; state->als_setting = buffer.output[2] & 0xFF; state->als_value = (buffer.output[2] >> 8) & 0xFF; state->level = (buffer.output[2] >> 16) & 0xFF; state->timeout_value_ac = (buffer.output[2] >> 24) & 0x3F; state->timeout_unit_ac = (buffer.output[2] >> 30) & 0x3; return ret; } static int kbd_set_state(struct kbd_state *state) { struct calling_interface_buffer buffer; int ret; u32 input1; u32 input2; input1 = BIT(state->mode_bit) & 0xFFFF; input1 |= (state->triggers & 0xFF) << 16; input1 |= (state->timeout_value & 0x3F) << 24; input1 |= (state->timeout_unit & 0x3) << 30; input2 = state->als_setting & 0xFF; input2 |= (state->level & 0xFF) << 16; input2 |= (state->timeout_value_ac & 0x3F) << 24; input2 |= (state->timeout_unit_ac & 0x3) << 30; dell_fill_request(&buffer, 0x2, input1, input2, 0); ret = dell_send_request(&buffer, CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT); return ret; } static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old) { int ret; ret = kbd_set_state(state); if (ret == 0) return 0; /* * When setting the new state fails,try to restore the previous one. * This is needed on some machines where BIOS sets a default state when * setting a new state fails. This default state could be all off. */ if (kbd_set_state(old)) pr_err("Setting old previous keyboard state failed\n"); return ret; } static int kbd_set_token_bit(u8 bit) { struct calling_interface_buffer buffer; struct calling_interface_token *token; int ret; if (bit >= ARRAY_SIZE(kbd_tokens)) return -EINVAL; token = dell_smbios_find_token(kbd_tokens[bit]); if (!token) return -EINVAL; dell_fill_request(&buffer, token->location, token->value, 0, 0); ret = dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_STD); return ret; } static int kbd_get_token_bit(u8 bit) { struct calling_interface_buffer buffer; struct calling_interface_token *token; int ret; int val; if (bit >= ARRAY_SIZE(kbd_tokens)) return -EINVAL; token = dell_smbios_find_token(kbd_tokens[bit]); if (!token) return -EINVAL; dell_fill_request(&buffer, token->location, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_TOKEN_READ, SELECT_TOKEN_STD); val = buffer.output[1]; if (ret) return ret; return (val == token->value); } static int kbd_get_first_active_token_bit(void) { int i; int ret; for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) { ret = kbd_get_token_bit(i); if (ret == 1) return i; } return ret; } static int kbd_get_valid_token_counts(void) { return hweight16(kbd_token_bits); } static inline int kbd_init_info(void) { struct kbd_state state; int ret; int i; ret = kbd_get_info(&kbd_info); if (ret) return ret; /* NOTE: Old models without KBD_LED_AC_TOKEN token supports only one * timeout value which is shared for both battery and AC power * settings. So do not try to set AC values on old models. */ if ((quirks && quirks->kbd_missing_ac_tag) || dell_smbios_find_token(KBD_LED_AC_TOKEN)) kbd_timeout_ac_supported = true; kbd_get_state(&state); /* NOTE: timeout value is stored in 6 bits so max value is 63 */ if (kbd_info.seconds > 63) kbd_info.seconds = 63; if (kbd_info.minutes > 63) kbd_info.minutes = 63; if (kbd_info.hours > 63) kbd_info.hours = 63; if (kbd_info.days > 63) kbd_info.days = 63; /* NOTE: On tested machines ON mode did not work and caused * problems (turned backlight off) so do not use it */ kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON); kbd_previous_level = kbd_get_level(&state); kbd_previous_mode_bit = state.mode_bit; if (kbd_previous_level == 0 && kbd_get_max_level() != 0) kbd_previous_level = 1; if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) { kbd_previous_mode_bit = ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF)); if (kbd_previous_mode_bit != 0) kbd_previous_mode_bit--; } if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) | BIT(KBD_MODE_BIT_TRIGGER_ALS))) kbd_als_supported = true; if (kbd_info.modes & ( BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) | BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) | BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100) )) kbd_triggers_supported = true; /* kbd_mode_levels[0] is reserved, see below */ for (i = 0; i < 16; ++i) if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes)) kbd_mode_levels[1 + kbd_mode_levels_count++] = i; /* * Find the first supported mode and assign to kbd_mode_levels[0]. * This should be 0 (off), but we cannot depend on the BIOS to * support 0. */ if (kbd_mode_levels_count > 0) { for (i = 0; i < 16; ++i) { if (BIT(i) & kbd_info.modes) { kbd_mode_levels[0] = i; break; } } kbd_mode_levels_count++; } return 0; } static inline void kbd_init_tokens(void) { int i; for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) if (dell_smbios_find_token(kbd_tokens[i])) kbd_token_bits |= BIT(i); } static void kbd_init(void) { int ret; if (quirks && quirks->kbd_led_not_present) return; ret = kbd_init_info(); kbd_init_tokens(); /* * Only supports keyboard backlight when it has at least two modes. */ if ((ret == 0 && (kbd_info.levels != 0 || kbd_mode_levels_count >= 2)) || kbd_get_valid_token_counts() >= 2) kbd_led_present = true; } static ssize_t kbd_led_timeout_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct kbd_state new_state; struct kbd_state state; bool convert; int value; int ret; char ch; u8 unit; int i; ret = sscanf(buf, "%d %c", &value, &ch); if (ret < 1) return -EINVAL; else if (ret == 1) ch = 's'; if (value < 0) return -EINVAL; convert = false; switch (ch) { case 's': if (value > kbd_info.seconds) convert = true; unit = KBD_TIMEOUT_SECONDS; break; case 'm': if (value > kbd_info.minutes) convert = true; unit = KBD_TIMEOUT_MINUTES; break; case 'h': if (value > kbd_info.hours) convert = true; unit = KBD_TIMEOUT_HOURS; break; case 'd': if (value > kbd_info.days) convert = true; unit = KBD_TIMEOUT_DAYS; break; default: return -EINVAL; } if (quirks && quirks->needs_kbd_timeouts) convert = true; if (convert) { /* Convert value from current units to seconds */ switch (unit) { case KBD_TIMEOUT_DAYS: value *= 24; fallthrough; case KBD_TIMEOUT_HOURS: value *= 60; fallthrough; case KBD_TIMEOUT_MINUTES: value *= 60; unit = KBD_TIMEOUT_SECONDS; } if (quirks && quirks->needs_kbd_timeouts) { for (i = 0; quirks->kbd_timeouts[i] != -1; i++) { if (value <= quirks->kbd_timeouts[i]) { value = quirks->kbd_timeouts[i]; break; } } } if (value <= kbd_info.seconds && kbd_info.seconds) { unit = KBD_TIMEOUT_SECONDS; } else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) { value /= 60; unit = KBD_TIMEOUT_MINUTES; } else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) { value /= (60 * 60); unit = KBD_TIMEOUT_HOURS; } else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) { value /= (60 * 60 * 24); unit = KBD_TIMEOUT_DAYS; } else { return -EINVAL; } } mutex_lock(&kbd_led_mutex); ret = kbd_get_state(&state); if (ret) goto out; new_state = state; if (kbd_timeout_ac_supported && power_supply_is_system_supplied() > 0) { new_state.timeout_value_ac = value; new_state.timeout_unit_ac = unit; } else { new_state.timeout_value = value; new_state.timeout_unit = unit; } ret = kbd_set_state_safe(&new_state, &state); if (ret) goto out; ret = count; out: mutex_unlock(&kbd_led_mutex); return ret; } static ssize_t kbd_led_timeout_show(struct device *dev, struct device_attribute *attr, char *buf) { struct kbd_state state; int value; int ret; int len; u8 unit; ret = kbd_get_state(&state); if (ret) return ret; if (kbd_timeout_ac_supported && power_supply_is_system_supplied() > 0) { value = state.timeout_value_ac; unit = state.timeout_unit_ac; } else { value = state.timeout_value; unit = state.timeout_unit; } len = sprintf(buf, "%d", value); switch (unit) { case KBD_TIMEOUT_SECONDS: return len + sprintf(buf+len, "s\n"); case KBD_TIMEOUT_MINUTES: return len + sprintf(buf+len, "m\n"); case KBD_TIMEOUT_HOURS: return len + sprintf(buf+len, "h\n"); case KBD_TIMEOUT_DAYS: return len + sprintf(buf+len, "d\n"); default: return -EINVAL; } return len; } static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR, kbd_led_timeout_show, kbd_led_timeout_store); static const char * const kbd_led_triggers[] = { "keyboard", "touchpad", /*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */ "mouse", }; static ssize_t kbd_led_triggers_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct kbd_state new_state; struct kbd_state state; bool triggers_enabled = false; int trigger_bit = -1; char trigger[21]; int i, ret; ret = sscanf(buf, "%20s", trigger); if (ret != 1) return -EINVAL; if (trigger[0] != '+' && trigger[0] != '-') return -EINVAL; mutex_lock(&kbd_led_mutex); ret = kbd_get_state(&state); if (ret) goto out; if (kbd_triggers_supported) triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); if (kbd_triggers_supported) { for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { if (!(kbd_info.triggers & BIT(i))) continue; if (!kbd_led_triggers[i]) continue; if (strcmp(trigger+1, kbd_led_triggers[i]) != 0) continue; if (trigger[0] == '+' && triggers_enabled && (state.triggers & BIT(i))) { ret = count; goto out; } if (trigger[0] == '-' && (!triggers_enabled || !(state.triggers & BIT(i)))) { ret = count; goto out; } trigger_bit = i; break; } } if (trigger_bit == -1) { ret = -EINVAL; goto out; } new_state = state; if (trigger[0] == '+') new_state.triggers |= BIT(trigger_bit); else { new_state.triggers &= ~BIT(trigger_bit); /* * NOTE: trackstick bit (2) must be disabled when * disabling touchpad bit (1), otherwise touchpad * bit (1) will not be disabled */ if (trigger_bit == 1) new_state.triggers &= ~BIT(2); } if ((kbd_info.triggers & new_state.triggers) != new_state.triggers) { ret = -EINVAL; goto out; } if (new_state.triggers && !triggers_enabled) { new_state.mode_bit = KBD_MODE_BIT_TRIGGER; kbd_set_level(&new_state, kbd_previous_level); } else if (new_state.triggers == 0) { kbd_set_level(&new_state, 0); } if (!(kbd_info.modes & BIT(new_state.mode_bit))) { ret = -EINVAL; goto out; } ret = kbd_set_state_safe(&new_state, &state); if (ret) goto out; if (new_state.mode_bit != KBD_MODE_BIT_OFF) kbd_previous_mode_bit = new_state.mode_bit; ret = count; out: mutex_unlock(&kbd_led_mutex); return ret; } static ssize_t kbd_led_triggers_show(struct device *dev, struct device_attribute *attr, char *buf) { struct kbd_state state; bool triggers_enabled; int level, i, ret; int len = 0; ret = kbd_get_state(&state); if (ret) return ret; len = 0; if (kbd_triggers_supported) { triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); level = kbd_get_level(&state); for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) { if (!(kbd_info.triggers & BIT(i))) continue; if (!kbd_led_triggers[i]) continue; if ((triggers_enabled || level <= 0) && (state.triggers & BIT(i))) buf[len++] = '+'; else buf[len++] = '-'; len += sprintf(buf+len, "%s ", kbd_led_triggers[i]); } } if (len) buf[len - 1] = '\n'; return len; } static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR, kbd_led_triggers_show, kbd_led_triggers_store); static ssize_t kbd_led_als_enabled_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct kbd_state new_state; struct kbd_state state; bool triggers_enabled = false; int enable; int ret; ret = kstrtoint(buf, 0, &enable); if (ret) return ret; mutex_lock(&kbd_led_mutex); ret = kbd_get_state(&state); if (ret) goto out; if (enable == kbd_is_als_mode_bit(state.mode_bit)) { ret = count; goto out; } new_state = state; if (kbd_triggers_supported) triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit); if (enable) { if (triggers_enabled) new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS; else new_state.mode_bit = KBD_MODE_BIT_ALS; } else { if (triggers_enabled) { new_state.mode_bit = KBD_MODE_BIT_TRIGGER; kbd_set_level(&new_state, kbd_previous_level); } else { new_state.mode_bit = KBD_MODE_BIT_ON; } } if (!(kbd_info.modes & BIT(new_state.mode_bit))) { ret = -EINVAL; goto out; } ret = kbd_set_state_safe(&new_state, &state); if (ret) goto out; kbd_previous_mode_bit = new_state.mode_bit; ret = count; out: mutex_unlock(&kbd_led_mutex); return ret; } static ssize_t kbd_led_als_enabled_show(struct device *dev, struct device_attribute *attr, char *buf) { struct kbd_state state; bool enabled = false; int ret; ret = kbd_get_state(&state); if (ret) return ret; enabled = kbd_is_als_mode_bit(state.mode_bit); return sprintf(buf, "%d\n", enabled ? 1 : 0); } static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR, kbd_led_als_enabled_show, kbd_led_als_enabled_store); static ssize_t kbd_led_als_setting_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct kbd_state state; struct kbd_state new_state; u8 setting; int ret; ret = kstrtou8(buf, 10, &setting); if (ret) return ret; mutex_lock(&kbd_led_mutex); ret = kbd_get_state(&state); if (ret) goto out; new_state = state; new_state.als_setting = setting; ret = kbd_set_state_safe(&new_state, &state); if (ret) goto out; ret = count; out: mutex_unlock(&kbd_led_mutex); return ret; } static ssize_t kbd_led_als_setting_show(struct device *dev, struct device_attribute *attr, char *buf) { struct kbd_state state; int ret; ret = kbd_get_state(&state); if (ret) return ret; return sprintf(buf, "%d\n", state.als_setting); } static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR, kbd_led_als_setting_show, kbd_led_als_setting_store); static struct attribute *kbd_led_attrs[] = { &dev_attr_stop_timeout.attr, &dev_attr_start_triggers.attr, NULL, }; static const struct attribute_group kbd_led_group = { .attrs = kbd_led_attrs, }; static struct attribute *kbd_led_als_attrs[] = { &dev_attr_als_enabled.attr, &dev_attr_als_setting.attr, NULL, }; static const struct attribute_group kbd_led_als_group = { .attrs = kbd_led_als_attrs, }; static const struct attribute_group *kbd_led_groups[] = { &kbd_led_group, &kbd_led_als_group, NULL, }; static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev) { int ret; u16 num; struct kbd_state state; if (kbd_get_max_level()) { ret = kbd_get_state(&state); if (ret) return 0; ret = kbd_get_level(&state); if (ret < 0) return 0; return ret; } if (kbd_get_valid_token_counts()) { ret = kbd_get_first_active_token_bit(); if (ret < 0) return 0; for (num = kbd_token_bits; num != 0 && ret > 0; --ret) num &= num - 1; /* clear the first bit set */ if (num == 0) return 0; return ffs(num) - 1; } pr_warn("Keyboard brightness level control not supported\n"); return 0; } static int kbd_led_level_set(struct led_classdev *led_cdev, enum led_brightness value) { enum led_brightness new_value = value; struct kbd_state state; struct kbd_state new_state; u16 num; int ret; mutex_lock(&kbd_led_mutex); if (kbd_get_max_level()) { ret = kbd_get_state(&state); if (ret) goto out; new_state = state; ret = kbd_set_level(&new_state, value); if (ret) goto out; ret = kbd_set_state_safe(&new_state, &state); } else if (kbd_get_valid_token_counts()) { for (num = kbd_token_bits; num != 0 && value > 0; --value) num &= num - 1; /* clear the first bit set */ if (num == 0) ret = 0; else ret = kbd_set_token_bit(ffs(num) - 1); } else { pr_warn("Keyboard brightness level control not supported\n"); ret = -ENXIO; } out: if (ret == 0) kbd_led_level = new_value; mutex_unlock(&kbd_led_mutex); return ret; } static struct led_classdev kbd_led = { .name = "dell::kbd_backlight", .flags = LED_BRIGHT_HW_CHANGED, .brightness_set_blocking = kbd_led_level_set, .brightness_get = kbd_led_level_get, .groups = kbd_led_groups, }; static int __init kbd_led_init(struct device *dev) { int ret; kbd_init(); if (!kbd_led_present) return -ENODEV; if (!kbd_als_supported) kbd_led_groups[1] = NULL; kbd_led.max_brightness = kbd_get_max_level(); if (!kbd_led.max_brightness) { kbd_led.max_brightness = kbd_get_valid_token_counts(); if (kbd_led.max_brightness) kbd_led.max_brightness--; } kbd_led_level = kbd_led_level_get(NULL); ret = led_classdev_register(dev, &kbd_led); if (ret) kbd_led_present = false; return ret; } static void brightness_set_exit(struct led_classdev *led_cdev, enum led_brightness value) { /* Don't change backlight level on exit */ }; static void kbd_led_exit(void) { if (!kbd_led_present) return; kbd_led.brightness_set = brightness_set_exit; led_classdev_unregister(&kbd_led); } static int dell_laptop_notifier_call(struct notifier_block *nb, unsigned long action, void *data) { bool changed = false; enum led_brightness new_kbd_led_level; switch (action) { case DELL_LAPTOP_KBD_BACKLIGHT_BRIGHTNESS_CHANGED: if (!kbd_led_present) break; mutex_lock(&kbd_led_mutex); new_kbd_led_level = kbd_led_level_get(&kbd_led); if (kbd_led_level != new_kbd_led_level) { kbd_led_level = new_kbd_led_level; changed = true; } mutex_unlock(&kbd_led_mutex); if (changed) led_classdev_notify_brightness_hw_changed(&kbd_led, kbd_led_level); break; } return NOTIFY_OK; } static struct notifier_block dell_laptop_notifier = { .notifier_call = dell_laptop_notifier_call, }; static int micmute_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct calling_interface_buffer buffer; struct calling_interface_token *token; int state = brightness != LED_OFF; if (state == 0) token = dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE); else token = dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE); if (!token) return -ENODEV; dell_fill_request(&buffer, token->location, token->value, 0, 0); dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_STD); return 0; } static struct led_classdev micmute_led_cdev = { .name = "platform::micmute", .max_brightness = 1, .brightness_set_blocking = micmute_led_set, .default_trigger = "audio-micmute", }; static int mute_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct calling_interface_buffer buffer; struct calling_interface_token *token; int state = brightness != LED_OFF; if (state == 0) token = dell_smbios_find_token(GLOBAL_MUTE_DISABLE); else token = dell_smbios_find_token(GLOBAL_MUTE_ENABLE); if (!token) return -ENODEV; dell_fill_request(&buffer, token->location, token->value, 0, 0); dell_send_request(&buffer, CLASS_TOKEN_WRITE, SELECT_TOKEN_STD); return 0; } static struct led_classdev mute_led_cdev = { .name = "platform::mute", .max_brightness = 1, .brightness_set_blocking = mute_led_set, .default_trigger = "audio-mute", }; static int __init dell_init(void) { struct calling_interface_token *token; int max_intensity = 0; int ret; if (!dmi_check_system(dell_device_table)) return -ENODEV; quirks = NULL; /* find if this machine support other functions */ dmi_check_system(dell_quirks); ret = platform_driver_register(&platform_driver); if (ret) goto fail_platform_driver; platform_device = platform_device_alloc("dell-laptop", PLATFORM_DEVID_NONE); if (!platform_device) { ret = -ENOMEM; goto fail_platform_device1; } ret = platform_device_add(platform_device); if (ret) goto fail_platform_device2; ret = dell_setup_rfkill(); if (ret) { pr_warn("Unable to setup rfkill\n"); goto fail_rfkill; } if (quirks && quirks->touchpad_led) touchpad_led_init(&platform_device->dev); kbd_led_init(&platform_device->dev); dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL); debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL, &dell_debugfs_fops); dell_laptop_register_notifier(&dell_laptop_notifier); if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) && dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE) && !dell_privacy_has_mic_mute()) { micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE); ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev); if (ret < 0) goto fail_led; micmute_led_registered = true; } if (dell_smbios_find_token(GLOBAL_MUTE_DISABLE) && dell_smbios_find_token(GLOBAL_MUTE_ENABLE)) { mute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MUTE); ret = led_classdev_register(&platform_device->dev, &mute_led_cdev); if (ret < 0) goto fail_backlight; mute_led_registered = true; } if (acpi_video_get_backlight_type() != acpi_backlight_vendor) return 0; token = dell_smbios_find_token(BRIGHTNESS_TOKEN); if (token) { struct calling_interface_buffer buffer; dell_fill_request(&buffer, token->location, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_TOKEN_READ, SELECT_TOKEN_AC); if (ret == 0) max_intensity = buffer.output[3]; } if (max_intensity) { struct backlight_properties props; memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_PLATFORM; props.max_brightness = max_intensity; dell_backlight_device = backlight_device_register("dell_backlight", &platform_device->dev, NULL, &dell_ops, &props); if (IS_ERR(dell_backlight_device)) { ret = PTR_ERR(dell_backlight_device); dell_backlight_device = NULL; goto fail_backlight; } dell_backlight_device->props.brightness = dell_get_intensity(dell_backlight_device); if (dell_backlight_device->props.brightness < 0) { ret = dell_backlight_device->props.brightness; goto fail_get_brightness; } backlight_update_status(dell_backlight_device); } return 0; fail_get_brightness: backlight_device_unregister(dell_backlight_device); fail_backlight: if (micmute_led_registered) led_classdev_unregister(&micmute_led_cdev); if (mute_led_registered) led_classdev_unregister(&mute_led_cdev); fail_led: dell_cleanup_rfkill(); fail_rfkill: platform_device_del(platform_device); fail_platform_device2: platform_device_put(platform_device); fail_platform_device1: platform_driver_unregister(&platform_driver); fail_platform_driver: return ret; } static void __exit dell_exit(void) { dell_laptop_unregister_notifier(&dell_laptop_notifier); debugfs_remove_recursive(dell_laptop_dir); if (quirks && quirks->touchpad_led) touchpad_led_exit(); kbd_led_exit(); backlight_device_unregister(dell_backlight_device); if (micmute_led_registered) led_classdev_unregister(&micmute_led_cdev); if (mute_led_registered) led_classdev_unregister(&mute_led_cdev); dell_cleanup_rfkill(); if (platform_device) { platform_device_unregister(platform_device); platform_driver_unregister(&platform_driver); } } /* dell-rbtn.c driver export functions which will not work correctly (and could * cause kernel crash) if they are called before dell-rbtn.c init code. This is * not problem when dell-rbtn.c is compiled as external module. When both files * (dell-rbtn.c and dell-laptop.c) are compiled statically into kernel, then we * need to ensure that dell_init() will be called after initializing dell-rbtn. * This can be achieved by late_initcall() instead module_init(). */ late_initcall(dell_init); module_exit(dell_exit); MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>"); MODULE_AUTHOR("Pali Rohár <pali@kernel.org>"); MODULE_DESCRIPTION("Dell laptop driver"); MODULE_LICENSE("GPL");
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