/* * Acer WMI Laptop Extras * * Copyright (C) 2007-2008 Carlos Corbacho * * Based on acer_acpi: * Copyright (C) 2005-2007 E.M. Smith * Copyright (C) 2007-2008 Carlos Corbacho * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include MODULE_AUTHOR("Carlos Corbacho"); MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver"); MODULE_LICENSE("GPL"); #define ACER_LOGPREFIX "acer-wmi: " #define ACER_ERR KERN_ERR ACER_LOGPREFIX #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX #define ACER_INFO KERN_INFO ACER_LOGPREFIX /* * The following defines quirks to get some specific functions to work * which are known to not be supported over ACPI-WMI (such as the mail LED * on WMID based Acer's) */ struct acer_quirks { const char *vendor; const char *model; u16 quirks; }; /* * Magic Number * Meaning is unknown - this number is required for writing to ACPI for AMW0 * (it's also used in acerhk when directly accessing the BIOS) */ #define ACER_AMW0_WRITE 0x9610 /* * Bit masks for the AMW0 interface */ #define ACER_AMW0_WIRELESS_MASK 0x35 #define ACER_AMW0_BLUETOOTH_MASK 0x34 #define ACER_AMW0_MAILLED_MASK 0x31 /* * Method IDs for WMID interface */ #define ACER_WMID_GET_WIRELESS_METHODID 1 #define ACER_WMID_GET_BLUETOOTH_METHODID 2 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3 #define ACER_WMID_SET_WIRELESS_METHODID 4 #define ACER_WMID_SET_BLUETOOTH_METHODID 5 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6 #define ACER_WMID_GET_THREEG_METHODID 10 #define ACER_WMID_SET_THREEG_METHODID 11 /* * Acer ACPI method GUIDs */ #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3" #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); /* Temporary workaround until the WMI sysfs interface goes in */ MODULE_ALIAS("dmi:*:*Acer*:*:"); /* * Interface capability flags */ #define ACER_CAP_MAILLED (1<<0) #define ACER_CAP_WIRELESS (1<<1) #define ACER_CAP_BLUETOOTH (1<<2) #define ACER_CAP_BRIGHTNESS (1<<3) #define ACER_CAP_THREEG (1<<4) #define ACER_CAP_ANY (0xFFFFFFFF) /* * Interface type flags */ enum interface_flags { ACER_AMW0, ACER_AMW0_V2, ACER_WMID, }; #define ACER_DEFAULT_WIRELESS 0 #define ACER_DEFAULT_BLUETOOTH 0 #define ACER_DEFAULT_MAILLED 0 #define ACER_DEFAULT_THREEG 0 static int max_brightness = 0xF; static int wireless = -1; static int bluetooth = -1; static int mailled = -1; static int brightness = -1; static int threeg = -1; static int force_series; module_param(mailled, int, 0444); module_param(wireless, int, 0444); module_param(bluetooth, int, 0444); module_param(brightness, int, 0444); module_param(threeg, int, 0444); module_param(force_series, int, 0444); MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware"); MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware"); MODULE_PARM_DESC(mailled, "Set initial state of Mail LED"); MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness"); MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware"); MODULE_PARM_DESC(force_series, "Force a different laptop series"); struct acer_data { int mailled; int wireless; int bluetooth; int threeg; int brightness; }; struct acer_debug { struct dentry *root; struct dentry *devices; u32 wmid_devices; }; /* Each low-level interface must define at least some of the following */ struct wmi_interface { /* The WMI device type */ u32 type; /* The capabilities this interface provides */ u32 capability; /* Private data for the current interface */ struct acer_data data; /* debugfs entries associated with this interface */ struct acer_debug debug; }; /* The static interface pointer, points to the currently detected interface */ static struct wmi_interface *interface; /* * Embedded Controller quirks * Some laptops require us to directly access the EC to either enable or query * features that are not available through WMI. */ struct quirk_entry { u8 wireless; u8 mailled; s8 brightness; u8 bluetooth; }; static struct quirk_entry *quirks; static void set_quirks(void) { if (quirks->mailled) interface->capability |= ACER_CAP_MAILLED; if (quirks->brightness) interface->capability |= ACER_CAP_BRIGHTNESS; } static int dmi_matched(const struct dmi_system_id *dmi) { quirks = dmi->driver_data; return 0; } static struct quirk_entry quirk_unknown = { }; static struct quirk_entry quirk_acer_aspire_1520 = { .brightness = -1, }; static struct quirk_entry quirk_acer_travelmate_2490 = { .mailled = 1, }; /* This AMW0 laptop has no bluetooth */ static struct quirk_entry quirk_medion_md_98300 = { .wireless = 1, }; static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { .wireless = 2, }; static struct dmi_system_id acer_quirks[] = { { .callback = dmi_matched, .ident = "Acer Aspire 1360", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"), }, .driver_data = &quirk_acer_aspire_1520, }, { .callback = dmi_matched, .ident = "Acer Aspire 1520", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"), }, .driver_data = &quirk_acer_aspire_1520, }, { .callback = dmi_matched, .ident = "Acer Aspire 3100", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 3610", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 5100", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 5610", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 5630", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 5650", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 5680", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer Aspire 9110", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer TravelMate 2490", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Acer TravelMate 4200", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Acer"), DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"), }, .driver_data = &quirk_acer_travelmate_2490, }, { .callback = dmi_matched, .ident = "Fujitsu Siemens Amilo Li 1718", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"), }, .driver_data = &quirk_fujitsu_amilo_li_1718, }, { .callback = dmi_matched, .ident = "Medion MD 98300", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"), }, .driver_data = &quirk_medion_md_98300, }, {} }; /* Find which quirks are needed for a particular vendor/ model pair */ static void find_quirks(void) { if (!force_series) { dmi_check_system(acer_quirks); } else if (force_series == 2490) { quirks = &quirk_acer_travelmate_2490; } if (quirks == NULL) quirks = &quirk_unknown; set_quirks(); } /* * General interface convenience methods */ static bool has_cap(u32 cap) { if ((interface->capability & cap) != 0) return 1; return 0; } /* * AMW0 (V1) interface */ struct wmab_args { u32 eax; u32 ebx; u32 ecx; u32 edx; }; struct wmab_ret { u32 eax; u32 ebx; u32 ecx; u32 edx; u32 eex; }; static acpi_status wmab_execute(struct wmab_args *regbuf, struct acpi_buffer *result) { struct acpi_buffer input; acpi_status status; input.length = sizeof(struct wmab_args); input.pointer = (u8 *)regbuf; status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result); return status; } static acpi_status AMW0_get_u32(u32 *value, u32 cap, struct wmi_interface *iface) { int err; u8 result; switch (cap) { case ACER_CAP_MAILLED: switch (quirks->mailled) { default: err = ec_read(0xA, &result); if (err) return AE_ERROR; *value = (result >> 7) & 0x1; return AE_OK; } break; case ACER_CAP_WIRELESS: switch (quirks->wireless) { case 1: err = ec_read(0x7B, &result); if (err) return AE_ERROR; *value = result & 0x1; return AE_OK; case 2: err = ec_read(0x71, &result); if (err) return AE_ERROR; *value = result & 0x1; return AE_OK; default: err = ec_read(0xA, &result); if (err) return AE_ERROR; *value = (result >> 2) & 0x1; return AE_OK; } break; case ACER_CAP_BLUETOOTH: switch (quirks->bluetooth) { default: err = ec_read(0xA, &result); if (err) return AE_ERROR; *value = (result >> 4) & 0x1; return AE_OK; } break; case ACER_CAP_BRIGHTNESS: switch (quirks->brightness) { default: err = ec_read(0x83, &result); if (err) return AE_ERROR; *value = result; return AE_OK; } break; default: return AE_BAD_ADDRESS; } return AE_OK; } static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface) { struct wmab_args args; args.eax = ACER_AMW0_WRITE; args.ebx = value ? (1<<8) : 0; args.ecx = args.edx = 0; switch (cap) { case ACER_CAP_MAILLED: if (value > 1) return AE_BAD_PARAMETER; args.ebx |= ACER_AMW0_MAILLED_MASK; break; case ACER_CAP_WIRELESS: if (value > 1) return AE_BAD_PARAMETER; args.ebx |= ACER_AMW0_WIRELESS_MASK; break; case ACER_CAP_BLUETOOTH: if (value > 1) return AE_BAD_PARAMETER; args.ebx |= ACER_AMW0_BLUETOOTH_MASK; break; case ACER_CAP_BRIGHTNESS: if (value > max_brightness) return AE_BAD_PARAMETER; switch (quirks->brightness) { default: return ec_write(0x83, value); break; } default: return AE_BAD_ADDRESS; } /* Actually do the set */ return wmab_execute(&args, NULL); } static acpi_status AMW0_find_mailled(void) { struct wmab_args args; struct wmab_ret ret; acpi_status status = AE_OK; struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; args.eax = 0x86; args.ebx = args.ecx = args.edx = 0; status = wmab_execute(&args, &out); if (ACPI_FAILURE(status)) return status; obj = (union acpi_object *) out.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == sizeof(struct wmab_ret)) { ret = *((struct wmab_ret *) obj->buffer.pointer); } else { return AE_ERROR; } if (ret.eex & 0x1) interface->capability |= ACER_CAP_MAILLED; kfree(out.pointer); return AE_OK; } static acpi_status AMW0_set_capabilities(void) { struct wmab_args args; struct wmab_ret ret; acpi_status status = AE_OK; struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; /* * On laptops with this strange GUID (non Acer), normal probing doesn't * work. */ if (wmi_has_guid(AMW0_GUID2)) { interface->capability |= ACER_CAP_WIRELESS; return AE_OK; } args.eax = ACER_AMW0_WRITE; args.ecx = args.edx = 0; args.ebx = 0xa2 << 8; args.ebx |= ACER_AMW0_WIRELESS_MASK; status = wmab_execute(&args, &out); if (ACPI_FAILURE(status)) return status; obj = (union acpi_object *) out.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == sizeof(struct wmab_ret)) { ret = *((struct wmab_ret *) obj->buffer.pointer); } else { return AE_ERROR; } if (ret.eax & 0x1) interface->capability |= ACER_CAP_WIRELESS; args.ebx = 2 << 8; args.ebx |= ACER_AMW0_BLUETOOTH_MASK; status = wmab_execute(&args, &out); if (ACPI_FAILURE(status)) return status; obj = (union acpi_object *) out.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == sizeof(struct wmab_ret)) { ret = *((struct wmab_ret *) obj->buffer.pointer); } else { return AE_ERROR; } if (ret.eax & 0x1) interface->capability |= ACER_CAP_BLUETOOTH; kfree(out.pointer); /* * This appears to be safe to enable, since all Wistron based laptops * appear to use the same EC register for brightness, even if they * differ for wireless, etc */ if (quirks->brightness >= 0) interface->capability |= ACER_CAP_BRIGHTNESS; return AE_OK; } static struct wmi_interface AMW0_interface = { .type = ACER_AMW0, }; static struct wmi_interface AMW0_V2_interface = { .type = ACER_AMW0_V2, }; /* * New interface (The WMID interface) */ static acpi_status WMI_execute_u32(u32 method_id, u32 in, u32 *out) { struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) }; struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; u32 tmp; acpi_status status; status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result); if (ACPI_FAILURE(status)) return status; obj = (union acpi_object *) result.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == sizeof(u32)) { tmp = *((u32 *) obj->buffer.pointer); } else { tmp = 0; } if (out) *out = tmp; kfree(result.pointer); return status; } static acpi_status WMID_get_u32(u32 *value, u32 cap, struct wmi_interface *iface) { acpi_status status; u8 tmp; u32 result, method_id = 0; switch (cap) { case ACER_CAP_WIRELESS: method_id = ACER_WMID_GET_WIRELESS_METHODID; break; case ACER_CAP_BLUETOOTH: method_id = ACER_WMID_GET_BLUETOOTH_METHODID; break; case ACER_CAP_BRIGHTNESS: method_id = ACER_WMID_GET_BRIGHTNESS_METHODID; break; case ACER_CAP_THREEG: method_id = ACER_WMID_GET_THREEG_METHODID; break; case ACER_CAP_MAILLED: if (quirks->mailled == 1) { ec_read(0x9f, &tmp); *value = tmp & 0x1; return 0; } default: return AE_BAD_ADDRESS; } status = WMI_execute_u32(method_id, 0, &result); if (ACPI_SUCCESS(status)) *value = (u8)result; return status; } static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface) { u32 method_id = 0; char param; switch (cap) { case ACER_CAP_BRIGHTNESS: if (value > max_brightness) return AE_BAD_PARAMETER; method_id = ACER_WMID_SET_BRIGHTNESS_METHODID; break; case ACER_CAP_WIRELESS: if (value > 1) return AE_BAD_PARAMETER; method_id = ACER_WMID_SET_WIRELESS_METHODID; break; case ACER_CAP_BLUETOOTH: if (value > 1) return AE_BAD_PARAMETER; method_id = ACER_WMID_SET_BLUETOOTH_METHODID; break; case ACER_CAP_THREEG: if (value > 1) return AE_BAD_PARAMETER; method_id = ACER_WMID_SET_THREEG_METHODID; break; case ACER_CAP_MAILLED: if (value > 1) return AE_BAD_PARAMETER; if (quirks->mailled == 1) { param = value ? 0x92 : 0x93; i8042_command(¶m, 0x1059); return 0; } break; default: return AE_BAD_ADDRESS; } return WMI_execute_u32(method_id, (u32)value, NULL); } static acpi_status WMID_set_capabilities(void) { struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; union acpi_object *obj; acpi_status status; u32 devices; status = wmi_query_block(WMID_GUID2, 1, &out); if (ACPI_FAILURE(status)) return status; obj = (union acpi_object *) out.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == sizeof(u32)) { devices = *((u32 *) obj->buffer.pointer); } else { return AE_ERROR; } /* Not sure on the meaning of the relevant bits yet to detect these */ interface->capability |= ACER_CAP_WIRELESS; interface->capability |= ACER_CAP_THREEG; /* WMID always provides brightness methods */ interface->capability |= ACER_CAP_BRIGHTNESS; if (devices & 0x10) interface->capability |= ACER_CAP_BLUETOOTH; if (!(devices & 0x20)) max_brightness = 0x9; return status; } static struct wmi_interface wmid_interface = { .type = ACER_WMID, }; /* * Generic Device (interface-independent) */ static acpi_status get_u32(u32 *value, u32 cap) { acpi_status status = AE_BAD_ADDRESS; switch (interface->type) { case ACER_AMW0: status = AMW0_get_u32(value, cap, interface); break; case ACER_AMW0_V2: if (cap == ACER_CAP_MAILLED) { status = AMW0_get_u32(value, cap, interface); break; } case ACER_WMID: status = WMID_get_u32(value, cap, interface); break; } return status; } static acpi_status set_u32(u32 value, u32 cap) { if (interface->capability & cap) { switch (interface->type) { case ACER_AMW0: return AMW0_set_u32(value, cap, interface); case ACER_AMW0_V2: case ACER_WMID: return WMID_set_u32(value, cap, interface); default: return AE_BAD_PARAMETER; } } return AE_BAD_PARAMETER; } static void __init acer_commandline_init(void) { /* * These will all fail silently if the value given is invalid, or the * capability isn't available on the given interface */ set_u32(mailled, ACER_CAP_MAILLED); set_u32(wireless, ACER_CAP_WIRELESS); set_u32(bluetooth, ACER_CAP_BLUETOOTH); set_u32(threeg, ACER_CAP_THREEG); set_u32(brightness, ACER_CAP_BRIGHTNESS); } /* * LED device (Mail LED only, no other LEDs known yet) */ static void mail_led_set(struct led_classdev *led_cdev, enum led_brightness value) { set_u32(value, ACER_CAP_MAILLED); } static struct led_classdev mail_led = { .name = "acer-wmi::mail", .brightness_set = mail_led_set, }; static int __devinit acer_led_init(struct device *dev) { return led_classdev_register(dev, &mail_led); } static void acer_led_exit(void) { led_classdev_unregister(&mail_led); } /* * Backlight device */ static struct backlight_device *acer_backlight_device; static int read_brightness(struct backlight_device *bd) { u32 value; get_u32(&value, ACER_CAP_BRIGHTNESS); return value; } static int update_bl_status(struct backlight_device *bd) { int intensity = bd->props.brightness; if (bd->props.power != FB_BLANK_UNBLANK) intensity = 0; if (bd->props.fb_blank != FB_BLANK_UNBLANK) intensity = 0; set_u32(intensity, ACER_CAP_BRIGHTNESS); return 0; } static struct backlight_ops acer_bl_ops = { .get_brightness = read_brightness, .update_status = update_bl_status, }; static int __devinit acer_backlight_init(struct device *dev) { struct backlight_device *bd; bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops); if (IS_ERR(bd)) { printk(ACER_ERR "Could not register Acer backlight device\n"); acer_backlight_device = NULL; return PTR_ERR(bd); } acer_backlight_device = bd; bd->props.power = FB_BLANK_UNBLANK; bd->props.brightness = max_brightness; bd->props.max_brightness = max_brightness; backlight_update_status(bd); return 0; } static void acer_backlight_exit(void) { backlight_device_unregister(acer_backlight_device); } /* * Read/ write bool sysfs macro */ #define show_set_bool(value, cap) \ static ssize_t \ show_bool_##value(struct device *dev, struct device_attribute *attr, \ char *buf) \ { \ u32 result; \ acpi_status status = get_u32(&result, cap); \ if (ACPI_SUCCESS(status)) \ return sprintf(buf, "%u\n", result); \ return sprintf(buf, "Read error\n"); \ } \ \ static ssize_t \ set_bool_##value(struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ { \ u32 tmp = simple_strtoul(buf, NULL, 10); \ acpi_status status = set_u32(tmp, cap); \ if (ACPI_FAILURE(status)) \ return -EINVAL; \ return count; \ } \ static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \ show_bool_##value, set_bool_##value); show_set_bool(wireless, ACER_CAP_WIRELESS); show_set_bool(bluetooth, ACER_CAP_BLUETOOTH); show_set_bool(threeg, ACER_CAP_THREEG); /* * Read interface sysfs macro */ static ssize_t show_interface(struct device *dev, struct device_attribute *attr, char *buf) { switch (interface->type) { case ACER_AMW0: return sprintf(buf, "AMW0\n"); case ACER_AMW0_V2: return sprintf(buf, "AMW0 v2\n"); case ACER_WMID: return sprintf(buf, "WMID\n"); default: return sprintf(buf, "Error!\n"); } } static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR, show_interface, NULL); /* * debugfs functions */ static u32 get_wmid_devices(void) { struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL}; union acpi_object *obj; acpi_status status; status = wmi_query_block(WMID_GUID2, 1, &out); if (ACPI_FAILURE(status)) return 0; obj = (union acpi_object *) out.pointer; if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == sizeof(u32)) { return *((u32 *) obj->buffer.pointer); } else { return 0; } } /* * Platform device */ static int __devinit acer_platform_probe(struct platform_device *device) { int err; if (has_cap(ACER_CAP_MAILLED)) { err = acer_led_init(&device->dev); if (err) goto error_mailled; } if (has_cap(ACER_CAP_BRIGHTNESS)) { err = acer_backlight_init(&device->dev); if (err) goto error_brightness; } return 0; error_brightness: acer_led_exit(); error_mailled: return err; } static int acer_platform_remove(struct platform_device *device) { if (has_cap(ACER_CAP_MAILLED)) acer_led_exit(); if (has_cap(ACER_CAP_BRIGHTNESS)) acer_backlight_exit(); return 0; } static int acer_platform_suspend(struct platform_device *dev, pm_message_t state) { u32 value; struct acer_data *data = &interface->data; if (!data) return -ENOMEM; if (has_cap(ACER_CAP_WIRELESS)) { get_u32(&value, ACER_CAP_WIRELESS); data->wireless = value; } if (has_cap(ACER_CAP_BLUETOOTH)) { get_u32(&value, ACER_CAP_BLUETOOTH); data->bluetooth = value; } if (has_cap(ACER_CAP_MAILLED)) { get_u32(&value, ACER_CAP_MAILLED); data->mailled = value; } if (has_cap(ACER_CAP_BRIGHTNESS)) { get_u32(&value, ACER_CAP_BRIGHTNESS); data->brightness = value; } return 0; } static int acer_platform_resume(struct platform_device *device) { struct acer_data *data = &interface->data; if (!data) return -ENOMEM; if (has_cap(ACER_CAP_WIRELESS)) set_u32(data->wireless, ACER_CAP_WIRELESS); if (has_cap(ACER_CAP_BLUETOOTH)) set_u32(data->bluetooth, ACER_CAP_BLUETOOTH); if (has_cap(ACER_CAP_THREEG)) set_u32(data->threeg, ACER_CAP_THREEG); if (has_cap(ACER_CAP_MAILLED)) set_u32(data->mailled, ACER_CAP_MAILLED); if (has_cap(ACER_CAP_BRIGHTNESS)) set_u32(data->brightness, ACER_CAP_BRIGHTNESS); return 0; } static struct platform_driver acer_platform_driver = { .driver = { .name = "acer-wmi", .owner = THIS_MODULE, }, .probe = acer_platform_probe, .remove = acer_platform_remove, .suspend = acer_platform_suspend, .resume = acer_platform_resume, }; static struct platform_device *acer_platform_device; static int remove_sysfs(struct platform_device *device) { if (has_cap(ACER_CAP_WIRELESS)) device_remove_file(&device->dev, &dev_attr_wireless); if (has_cap(ACER_CAP_BLUETOOTH)) device_remove_file(&device->dev, &dev_attr_bluetooth); if (has_cap(ACER_CAP_THREEG)) device_remove_file(&device->dev, &dev_attr_threeg); device_remove_file(&device->dev, &dev_attr_interface); return 0; } static int create_sysfs(void) { int retval = -ENOMEM; if (has_cap(ACER_CAP_WIRELESS)) { retval = device_create_file(&acer_platform_device->dev, &dev_attr_wireless); if (retval) goto error_sysfs; } if (has_cap(ACER_CAP_BLUETOOTH)) { retval = device_create_file(&acer_platform_device->dev, &dev_attr_bluetooth); if (retval) goto error_sysfs; } if (has_cap(ACER_CAP_THREEG)) { retval = device_create_file(&acer_platform_device->dev, &dev_attr_threeg); if (retval) goto error_sysfs; } retval = device_create_file(&acer_platform_device->dev, &dev_attr_interface); if (retval) goto error_sysfs; return 0; error_sysfs: remove_sysfs(acer_platform_device); return retval; } static void remove_debugfs(void) { debugfs_remove(interface->debug.devices); debugfs_remove(interface->debug.root); } static int create_debugfs(void) { interface->debug.root = debugfs_create_dir("acer-wmi", NULL); if (!interface->debug.root) { printk(ACER_ERR "Failed to create debugfs directory"); return -ENOMEM; } interface->debug.devices = debugfs_create_u32("devices", S_IRUGO, interface->debug.root, &interface->debug.wmid_devices); if (!interface->debug.devices) goto error_debugfs; return 0; error_debugfs: remove_debugfs(); return -ENOMEM; } static int __init acer_wmi_init(void) { int err; printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n"); find_quirks(); /* * Detect which ACPI-WMI interface we're using. */ if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) interface = &AMW0_V2_interface; if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1)) interface = &wmid_interface; if (wmi_has_guid(WMID_GUID2) && interface) { if (ACPI_FAILURE(WMID_set_capabilities())) { printk(ACER_ERR "Unable to detect available WMID " "devices\n"); return -ENODEV; } } else if (!wmi_has_guid(WMID_GUID2) && interface) { printk(ACER_ERR "No WMID device detection method found\n"); return -ENODEV; } if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) { interface = &AMW0_interface; if (ACPI_FAILURE(AMW0_set_capabilities())) { printk(ACER_ERR "Unable to detect available AMW0 " "devices\n"); return -ENODEV; } } if (wmi_has_guid(AMW0_GUID1)) AMW0_find_mailled(); if (!interface) { printk(ACER_ERR "No or unsupported WMI interface, unable to " "load\n"); return -ENODEV; } if (platform_driver_register(&acer_platform_driver)) { printk(ACER_ERR "Unable to register platform driver.\n"); goto error_platform_register; } acer_platform_device = platform_device_alloc("acer-wmi", -1); platform_device_add(acer_platform_device); err = create_sysfs(); if (err) return err; if (wmi_has_guid(WMID_GUID2)) { interface->debug.wmid_devices = get_wmid_devices(); err = create_debugfs(); if (err) return err; } /* Override any initial settings with values from the commandline */ acer_commandline_init(); return 0; error_platform_register: return -ENODEV; } static void __exit acer_wmi_exit(void) { remove_sysfs(acer_platform_device); platform_device_del(acer_platform_device); platform_driver_unregister(&acer_platform_driver); printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n"); return; } module_init(acer_wmi_init); module_exit(acer_wmi_exit);