diff options
Diffstat (limited to 'drivers/platform/x86/thinkpad_acpi.c')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 285 |
1 files changed, 238 insertions, 47 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 726341f2b638..da794dcfdd92 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -1,24 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * thinkpad_acpi.c - ThinkPad ACPI Extras * - * * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -79,7 +64,7 @@ #include <linux/jiffies.h> #include <linux/workqueue.h> #include <linux/acpi.h> -#include <linux/pci_ids.h> +#include <linux/pci.h> #include <linux/power_supply.h> #include <sound/core.h> #include <sound/control.h> @@ -3662,22 +3647,19 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) goto err_exit; /* Set up key map */ - hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, - GFP_KERNEL); - if (!hotkey_keycode_map) { - pr_err("failed to allocate memory for key map\n"); - res = -ENOMEM; - goto err_exit; - } - keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, ARRAY_SIZE(tpacpi_keymap_qtable)); BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "using keymap number %lu\n", keymap_id); - memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id], - TPACPI_HOTKEY_MAP_SIZE); + hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], + TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); + if (!hotkey_keycode_map) { + pr_err("failed to allocate memory for key map\n"); + res = -ENOMEM; + goto err_exit; + } input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; @@ -4212,7 +4194,7 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event) known_ev = true; break; } - /* fallthrough to default */ + /* fallthrough - to default */ default: known_ev = false; } @@ -4501,6 +4483,74 @@ static void bluetooth_exit(void) bluetooth_shutdown(); } +static const struct dmi_system_id bt_fwbug_list[] __initconst = { + { + .ident = "ThinkPad E485", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "20KU"), + }, + }, + { + .ident = "ThinkPad E585", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "20KV"), + }, + }, + { + .ident = "ThinkPad A285 - 20MW", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "20MW"), + }, + }, + { + .ident = "ThinkPad A285 - 20MX", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "20MX"), + }, + }, + { + .ident = "ThinkPad A485 - 20MU", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "20MU"), + }, + }, + { + .ident = "ThinkPad A485 - 20MV", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_BOARD_NAME, "20MV"), + }, + }, + {} +}; + +static const struct pci_device_id fwbug_cards_ids[] __initconst = { + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, + {} +}; + + +static int __init have_bt_fwbug(void) +{ + /* + * Some AMD based ThinkPads have a firmware bug that calling + * "GBDC" will cause bluetooth on Intel wireless cards blocked + */ + if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { + vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, + FW_BUG "disable bluetooth subdriver for Intel cards\n"); + return 1; + } else + return 0; +} + static int __init bluetooth_init(struct ibm_init_struct *iibm) { int res; @@ -4513,7 +4563,7 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm) /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ - tp_features.bluetooth = hkey_handle && + tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && acpi_evalf(hkey_handle, &status, "GBDC", "qd"); vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, @@ -5808,7 +5858,7 @@ static int led_set_status(const unsigned int led, return -EPERM; if (!acpi_evalf(led_handle, NULL, NULL, "vdd", (1 << led), led_sled_arg1[ledstatus])) - rc = -EIO; + return -EIO; break; case TPACPI_LED_OLD: /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ @@ -5832,10 +5882,10 @@ static int led_set_status(const unsigned int led, return -EPERM; if (!acpi_evalf(led_handle, NULL, NULL, "vdd", led, led_led_arg1[ledstatus])) - rc = -EIO; + return -EIO; break; default: - rc = -ENXIO; + return -ENXIO; } if (!rc) @@ -6249,8 +6299,8 @@ static int thermal_get_sensor(int idx, s32 *value) t = TP_EC_THERMAL_TMP8; idx -= 8; } - /* fallthrough */ #endif + /* fallthrough */ case TPACPI_THERMAL_TPEC_8: if (idx <= 7) { if (!acpi_ec_read(t + idx, &tmp)) @@ -9661,6 +9711,107 @@ static struct ibm_struct battery_driver_data = { .exit = tpacpi_battery_exit, }; +/************************************************************************* + * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature + */ + +static int lcdshadow_state; + +static int lcdshadow_on_off(bool state) +{ + acpi_handle set_shadow_handle; + int output; + + if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { + pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); + return -EIO; + } + + if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) + return -EIO; + + lcdshadow_state = state; + return 0; +} + +static int lcdshadow_set(bool on) +{ + if (lcdshadow_state < 0) + return lcdshadow_state; + if (lcdshadow_state == on) + return 0; + return lcdshadow_on_off(on); +} + +static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) +{ + acpi_handle get_shadow_handle; + int output; + + if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { + lcdshadow_state = -ENODEV; + return 0; + } + + if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { + lcdshadow_state = -EIO; + return -EIO; + } + if (!(output & 0x10000)) { + lcdshadow_state = -ENODEV; + return 0; + } + lcdshadow_state = output & 0x1; + + return 0; +} + +static void lcdshadow_resume(void) +{ + if (lcdshadow_state >= 0) + lcdshadow_on_off(lcdshadow_state); +} + +static int lcdshadow_read(struct seq_file *m) +{ + if (lcdshadow_state < 0) { + seq_puts(m, "status:\t\tnot supported\n"); + } else { + seq_printf(m, "status:\t\t%d\n", lcdshadow_state); + seq_puts(m, "commands:\t0, 1\n"); + } + + return 0; +} + +static int lcdshadow_write(char *buf) +{ + char *cmd; + int state = -1; + + if (lcdshadow_state < 0) + return -ENODEV; + + while ((cmd = next_cmd(&buf))) { + if (strlencmp(cmd, "0") == 0) + state = 0; + else if (strlencmp(cmd, "1") == 0) + state = 1; + } + + if (state == -1) + return -EINVAL; + + return lcdshadow_set(state); +} + +static struct ibm_struct lcdshadow_driver_data = { + .name = "lcdshadow", + .resume = lcdshadow_resume, + .read = lcdshadow_read, + .write = lcdshadow_write, +}; + /**************************************************************************** **************************************************************************** * @@ -9890,6 +10041,37 @@ invalid: return '\0'; } +static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) +{ + char *ec_fw_string = (char *) private; + const char *dmi_data = (const char *)dm; + /* + * ThinkPad Embedded Controller Program Table on newer models + * + * Offset | Name | Width | Description + * ---------------------------------------------------- + * 0x00 | Type | BYTE | 0x8C + * 0x01 | Length | BYTE | + * 0x02 | Handle | WORD | Varies + * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" + * 0x0A | OEM struct offset | BYTE | 0x0B + * 0x0B | OEM struct number | BYTE | 0x07, for this structure + * 0x0C | OEM struct revision | BYTE | 0x01, for this format + * 0x0D | ECP version ID | STR ID | + * 0x0E | ECP release date | STR ID | + */ + + /* Return if data structure not match */ + if (dm->type != 140 || dm->length < 0x0F || + memcmp(dmi_data + 4, "LENOVO", 6) != 0 || + dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || + dmi_data[0x0C] != 0x01) + return; + + /* fwstr is the first 8byte string */ + strncpy(ec_fw_string, dmi_data + 0x0F, 8); +} + /* returns 0 - probe ok, or < 0 - probe error. * Probe ok doesn't mean thinkpad found. * On error, kfree() cleanup on tp->* is not performed, caller must do it */ @@ -9897,7 +10079,7 @@ static int __must_check __init get_thinkpad_model_data( struct thinkpad_id_data *tp) { const struct dmi_device *dev = NULL; - char ec_fw_string[18]; + char ec_fw_string[18] = {0}; char const *s; char t; @@ -9937,20 +10119,25 @@ static int __must_check __init get_thinkpad_model_data( ec_fw_string) == 1) { ec_fw_string[sizeof(ec_fw_string) - 1] = 0; ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; + break; + } + } - tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); - if (!tp->ec_version_str) - return -ENOMEM; + /* Newer ThinkPads have different EC program info table */ + if (!ec_fw_string[0]) + dmi_walk(find_new_ec_fwstr, &ec_fw_string); - t = tpacpi_parse_fw_id(ec_fw_string, - &tp->ec_model, &tp->ec_release); - if (t != 'H') { - pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", - ec_fw_string); - pr_notice("please report this to %s\n", - TPACPI_MAIL); - } - break; + if (ec_fw_string[0]) { + tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); + if (!tp->ec_version_str) + return -ENOMEM; + + t = tpacpi_parse_fw_id(ec_fw_string, + &tp->ec_model, &tp->ec_release); + if (t != 'H') { + pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", + ec_fw_string); + pr_notice("please report this to %s\n", TPACPI_MAIL); } } @@ -10106,6 +10293,10 @@ static struct ibm_init_struct ibms_init[] __initdata = { .init = tpacpi_battery_init, .data = &battery_driver_data, }, + { + .init = tpacpi_lcdshadow_init, + .data = &lcdshadow_driver_data, + }, }; static int __init set_ibm_param(const char *val, const struct kernel_param *kp) @@ -10165,7 +10356,7 @@ MODULE_PARM_DESC(volume_mode, module_param_named(volume_capabilities, volume_capabilities, uint, 0444); MODULE_PARM_DESC(volume_capabilities, - "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only"); + "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); module_param_named(volume_control, volume_control_allowed, bool, 0444); MODULE_PARM_DESC(volume_control, |
