diff options
Diffstat (limited to 'drivers/platform/x86/acer-wmi.c')
| -rw-r--r-- | drivers/platform/x86/acer-wmi.c | 1345 |
1 files changed, 1345 insertions, 0 deletions
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c new file mode 100644 index 000000000000..94c9f911824e --- /dev/null +++ b/drivers/platform/x86/acer-wmi.c @@ -0,0 +1,1345 @@ +/* + * Acer WMI Laptop Extras + * + * Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk> + * + * Based on acer_acpi: + * Copyright (C) 2005-2007 E.M. Smith + * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com> + * + * 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 <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/dmi.h> +#include <linux/fb.h> +#include <linux/backlight.h> +#include <linux/leds.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> +#include <linux/i8042.h> +#include <linux/rfkill.h> +#include <linux/workqueue.h> +#include <linux/debugfs.h> + +#include <acpi/acpi_drivers.h> + +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 mailled = -1; +static int brightness = -1; +static int threeg = -1; +static int force_series; + +module_param(mailled, int, 0444); +module_param(brightness, int, 0444); +module_param(threeg, int, 0444); +module_param(force_series, int, 0444); +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 threeg; + int brightness; +}; + +struct acer_debug { + struct dentry *root; + struct dentry *devices; + u32 wmid_devices; +}; + +static struct rfkill *wireless_rfkill; +static struct rfkill *bluetooth_rfkill; + +/* 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 (!interface) + return; + + 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_ERROR; + } + 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_ERROR; + } + + /* 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_ERROR; + } + 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_ERROR; + } + 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_ERROR; + + 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) +{ + acpi_status status; + + if (interface->capability & cap) { + switch (interface->type) { + case ACER_AMW0: + return AMW0_set_u32(value, cap, interface); + case ACER_AMW0_V2: + if (cap == ACER_CAP_MAILLED) + return AMW0_set_u32(value, cap, interface); + + /* + * On some models, some WMID methods don't toggle + * properly. For those cases, we want to run the AMW0 + * method afterwards to be certain we've really toggled + * the device state. + */ + if (cap == ACER_CAP_WIRELESS || + cap == ACER_CAP_BLUETOOTH) { + status = WMID_set_u32(value, cap, interface); + if (ACPI_FAILURE(status)) + return status; + + return AMW0_set_u32(value, cap, interface); + } + 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(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); +} + +/* + * Rfkill devices + */ +static void acer_rfkill_update(struct work_struct *ignored); +static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update); +static void acer_rfkill_update(struct work_struct *ignored) +{ + u32 state; + acpi_status status; + + status = get_u32(&state, ACER_CAP_WIRELESS); + if (ACPI_SUCCESS(status)) + rfkill_force_state(wireless_rfkill, state ? + RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED); + + if (has_cap(ACER_CAP_BLUETOOTH)) { + status = get_u32(&state, ACER_CAP_BLUETOOTH); + if (ACPI_SUCCESS(status)) + rfkill_force_state(bluetooth_rfkill, state ? + RFKILL_STATE_UNBLOCKED : + RFKILL_STATE_SOFT_BLOCKED); + } + + schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); +} + +static int acer_rfkill_set(void *data, enum rfkill_state state) +{ + acpi_status status; + u32 *cap = data; + status = set_u32((u32) (state == RFKILL_STATE_UNBLOCKED), *cap); + if (ACPI_FAILURE(status)) + return -ENODEV; + return 0; +} + +static struct rfkill * acer_rfkill_register(struct device *dev, +enum rfkill_type type, char *name, u32 cap) +{ + int err; + u32 state; + u32 *data; + struct rfkill *rfkill_dev; + + rfkill_dev = rfkill_allocate(dev, type); + if (!rfkill_dev) + return ERR_PTR(-ENOMEM); + rfkill_dev->name = name; + get_u32(&state, cap); + rfkill_dev->state = state ? RFKILL_STATE_UNBLOCKED : + RFKILL_STATE_SOFT_BLOCKED; + data = kzalloc(sizeof(u32), GFP_KERNEL); + if (!data) { + rfkill_free(rfkill_dev); + return ERR_PTR(-ENOMEM); + } + *data = cap; + rfkill_dev->data = data; + rfkill_dev->toggle_radio = acer_rfkill_set; + rfkill_dev->user_claim_unsupported = 1; + + err = rfkill_register(rfkill_dev); + if (err) { + kfree(rfkill_dev->data); + rfkill_free(rfkill_dev); + return ERR_PTR(err); + } + return rfkill_dev; +} + +static int acer_rfkill_init(struct device *dev) +{ + wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN, + "acer-wireless", ACER_CAP_WIRELESS); + if (IS_ERR(wireless_rfkill)) + return PTR_ERR(wireless_rfkill); + + if (has_cap(ACER_CAP_BLUETOOTH)) { + bluetooth_rfkill = acer_rfkill_register(dev, + RFKILL_TYPE_BLUETOOTH, "acer-bluetooth", + ACER_CAP_BLUETOOTH); + if (IS_ERR(bluetooth_rfkill)) { + kfree(wireless_rfkill->data); + rfkill_unregister(wireless_rfkill); + return PTR_ERR(bluetooth_rfkill); + } + } + + schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ)); + + return 0; +} + +static void acer_rfkill_exit(void) +{ + cancel_delayed_work_sync(&acer_rfkill_work); + kfree(wireless_rfkill->data); + rfkill_unregister(wireless_rfkill); + if (has_cap(ACER_CAP_BLUETOOTH)) { + kfree(wireless_rfkill->data); + rfkill_unregister(bluetooth_rfkill); + } + return; +} + +/* + * sysfs interface + */ +static ssize_t show_bool_threeg(struct device *dev, + struct device_attribute *attr, char *buf) +{ + u32 result; \ + acpi_status status = get_u32(&result, ACER_CAP_THREEG); + if (ACPI_SUCCESS(status)) + return sprintf(buf, "%u\n", result); + return sprintf(buf, "Read error\n"); +} + +static ssize_t set_bool_threeg(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, ACER_CAP_THREEG); + if (ACPI_FAILURE(status)) + return -EINVAL; + return count; +} +static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg, + set_bool_threeg); + +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; + } + + err = acer_rfkill_init(&device->dev); + + return err; + +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(); + + acer_rfkill_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_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_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_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_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; + } + + set_quirks(); + + if (!acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) { + interface->capability &= ~ACER_CAP_BRIGHTNESS; + printk(ACER_INFO "Brightness must be controlled by " + "generic video driver\n"); + } + + 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); + remove_debugfs(); + 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); |