diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/acpi/toshiba_acpi.c | 261 |
2 files changed, 256 insertions, 8 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 735f5ea1747..12cf5d491f0 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -260,6 +260,9 @@ config ACPI_ASUS config ACPI_TOSHIBA tristate "Toshiba Laptop Extras" depends on X86 + select INPUT_POLLDEV + select NET + select RFKILL select BACKLIGHT_CLASS_DEVICE ---help--- This driver adds support for access to certain system settings diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c index 0a43c8e0eff..8a649f40d16 100644 --- a/drivers/acpi/toshiba_acpi.c +++ b/drivers/acpi/toshiba_acpi.c @@ -3,6 +3,7 @@ * * * Copyright (C) 2002-2004 John Belmonte + * Copyright (C) 2008 Philip Langdale * * 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 @@ -33,7 +34,7 @@ * */ -#define TOSHIBA_ACPI_VERSION "0.18" +#define TOSHIBA_ACPI_VERSION "0.19" #define PROC_INTERFACE_VERSION 1 #include <linux/kernel.h> @@ -42,6 +43,9 @@ #include <linux/types.h> #include <linux/proc_fs.h> #include <linux/backlight.h> +#include <linux/platform_device.h> +#include <linux/rfkill.h> +#include <linux/input-polldev.h> #include <asm/uaccess.h> @@ -90,6 +94,7 @@ MODULE_LICENSE("GPL"); #define HCI_VIDEO_OUT 0x001c #define HCI_HOTKEY_EVENT 0x001e #define HCI_LCD_BRIGHTNESS 0x002a +#define HCI_WIRELESS 0x0056 /* field definitions */ #define HCI_LCD_BRIGHTNESS_BITS 3 @@ -98,9 +103,14 @@ MODULE_LICENSE("GPL"); #define HCI_VIDEO_OUT_LCD 0x1 #define HCI_VIDEO_OUT_CRT 0x2 #define HCI_VIDEO_OUT_TV 0x4 +#define HCI_WIRELESS_KILL_SWITCH 0x01 +#define HCI_WIRELESS_BT_PRESENT 0x0f +#define HCI_WIRELESS_BT_ATTACH 0x40 +#define HCI_WIRELESS_BT_POWER 0x80 static const struct acpi_device_id toshiba_device_ids[] = { {"TOS6200", 0}, + {"TOS6208", 0}, {"TOS1900", 0}, {"", 0}, }; @@ -193,7 +203,7 @@ static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS]) return status; } -/* common hci tasks (get or set one value) +/* common hci tasks (get or set one or two value) * * In addition to the ACPI status, the HCI system returns a result which * may be useful (such as "not supported"). @@ -218,6 +228,152 @@ static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result) return status; } +static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result) +{ + u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 }; + u32 out[HCI_WORDS]; + acpi_status status = hci_raw(in, out); + *result = (status == AE_OK) ? out[0] : HCI_FAILURE; + return status; +} + +static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result) +{ + u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 }; + u32 out[HCI_WORDS]; + acpi_status status = hci_raw(in, out); + *out1 = out[2]; + *out2 = out[3]; + *result = (status == AE_OK) ? out[0] : HCI_FAILURE; + return status; +} + +struct toshiba_acpi_dev { + struct platform_device *p_dev; + struct rfkill *rfk_dev; + struct input_polled_dev *poll_dev; + + const char *bt_name; + const char *rfk_name; + + bool last_rfk_state; + + struct mutex mutex; +}; + +static struct toshiba_acpi_dev toshiba_acpi = { + .bt_name = "Toshiba Bluetooth", + .rfk_name = "Toshiba RFKill Switch", + .last_rfk_state = false, +}; + +/* Bluetooth rfkill handlers */ + +static u32 hci_get_bt_present(bool *present) +{ + u32 hci_result; + u32 value, value2; + + value = 0; + value2 = 0; + hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); + if (hci_result == HCI_SUCCESS) + *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false; + + return hci_result; +} + +static u32 hci_get_bt_on(bool *on) +{ + u32 hci_result; + u32 value, value2; + + value = 0; + value2 = 0x0001; + hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); + if (hci_result == HCI_SUCCESS) + *on = (value & HCI_WIRELESS_BT_POWER) && + (value & HCI_WIRELESS_BT_ATTACH); + + return hci_result; +} + +static u32 hci_get_radio_state(bool *radio_state) +{ + u32 hci_result; + u32 value, value2; + + value = 0; + value2 = 0x0001; + hci_read2(HCI_WIRELESS, &value, &value2, &hci_result); + + *radio_state = value & HCI_WIRELESS_KILL_SWITCH; + return hci_result; +} + +static int bt_rfkill_toggle_radio(void *data, enum rfkill_state state) +{ + u32 result1, result2; + u32 value; + bool radio_state; + struct toshiba_acpi_dev *dev = data; + + value = (state == RFKILL_STATE_UNBLOCKED); + + if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) + return -EFAULT; + + switch (state) { + case RFKILL_STATE_UNBLOCKED: + if (!radio_state) + return -EPERM; + break; + case RFKILL_STATE_SOFT_BLOCKED: + break; + default: + return -EINVAL; + } + + mutex_lock(&dev->mutex); + hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1); + hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2); + mutex_unlock(&dev->mutex); + + if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS) + return -EFAULT; + + return 0; +} + +static void bt_poll_rfkill(struct input_polled_dev *poll_dev) +{ + bool state_changed; + bool new_rfk_state; + bool value; + u32 hci_result; + struct toshiba_acpi_dev *dev = poll_dev->private; + + hci_result = hci_get_radio_state(&value); + if (hci_result != HCI_SUCCESS) + return; /* Can't do anything useful */ + + new_rfk_state = value; + + mutex_lock(&dev->mutex); + state_changed = new_rfk_state != dev->last_rfk_state; + dev->last_rfk_state = new_rfk_state; + mutex_unlock(&dev->mutex); + + if (unlikely(state_changed)) { + rfkill_force_state(dev->rfk_dev, + new_rfk_state ? + RFKILL_STATE_SOFT_BLOCKED : + RFKILL_STATE_HARD_BLOCKED); + input_report_switch(poll_dev->input, SW_RFKILL_ALL, + new_rfk_state); + } +} + static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; static struct backlight_device *toshiba_backlight_device; static int force_fan; @@ -547,6 +703,14 @@ static struct backlight_ops toshiba_backlight_data = { static void toshiba_acpi_exit(void) { + if (toshiba_acpi.poll_dev) { + input_unregister_polled_device(toshiba_acpi.poll_dev); + input_free_polled_device(toshiba_acpi.poll_dev); + } + + if (toshiba_acpi.rfk_dev) + rfkill_unregister(toshiba_acpi.rfk_dev); + if (toshiba_backlight_device) backlight_device_unregister(toshiba_backlight_device); @@ -555,6 +719,8 @@ static void toshiba_acpi_exit(void) if (toshiba_proc_dir) remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); + platform_device_unregister(toshiba_acpi.p_dev); + return; } @@ -562,6 +728,10 @@ static int __init toshiba_acpi_init(void) { acpi_status status = AE_OK; u32 hci_result; + bool bt_present; + bool bt_on; + bool radio_on; + int ret = 0; if (acpi_disabled) return -ENODEV; @@ -578,6 +748,18 @@ static int __init toshiba_acpi_init(void) TOSHIBA_ACPI_VERSION); printk(MY_INFO " HCI method: %s\n", method_hci); + mutex_init(&toshiba_acpi.mutex); + + toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi", + -1, NULL, 0); + if (IS_ERR(toshiba_acpi.p_dev)) { + ret = PTR_ERR(toshiba_acpi.p_dev); + printk(MY_ERR "unable to register platform device\n"); + toshiba_acpi.p_dev = NULL; + toshiba_acpi_exit(); + return ret; + } + force_fan = 0; key_event_valid = 0; @@ -586,19 +768,23 @@ static int __init toshiba_acpi_init(void) toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir); if (!toshiba_proc_dir) { - status = AE_ERROR; + toshiba_acpi_exit(); + return -ENODEV; } else { toshiba_proc_dir->owner = THIS_MODULE; status = add_device(); - if (ACPI_FAILURE(status)) - remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); + if (ACPI_FAILURE(status)) { + toshiba_acpi_exit(); + return -ENODEV; + } } - toshiba_backlight_device = backlight_device_register("toshiba",NULL, + toshiba_backlight_device = backlight_device_register("toshiba", + &toshiba_acpi.p_dev->dev, NULL, &toshiba_backlight_data); if (IS_ERR(toshiba_backlight_device)) { - int ret = PTR_ERR(toshiba_backlight_device); + ret = PTR_ERR(toshiba_backlight_device); printk(KERN_ERR "Could not register toshiba backlight device\n"); toshiba_backlight_device = NULL; @@ -607,7 +793,66 @@ static int __init toshiba_acpi_init(void) } toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1; - return (ACPI_SUCCESS(status)) ? 0 : -ENODEV; + /* Register rfkill switch for Bluetooth */ + if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) { + toshiba_acpi.rfk_dev = rfkill_allocate(&toshiba_acpi.p_dev->dev, + RFKILL_TYPE_BLUETOOTH); + if (!toshiba_acpi.rfk_dev) { + printk(MY_ERR "unable to allocate rfkill device\n"); + toshiba_acpi_exit(); + return -ENOMEM; + } + + toshiba_acpi.rfk_dev->name = toshiba_acpi.bt_name; + toshiba_acpi.rfk_dev->toggle_radio = bt_rfkill_toggle_radio; + toshiba_acpi.rfk_dev->user_claim_unsupported = 1; + toshiba_acpi.rfk_dev->data = &toshiba_acpi; + + if (hci_get_bt_on(&bt_on) == HCI_SUCCESS && bt_on) { + toshiba_acpi.rfk_dev->state = RFKILL_STATE_UNBLOCKED; + } else if (hci_get_radio_state(&radio_on) == HCI_SUCCESS && + radio_on) { + toshiba_acpi.rfk_dev->state = RFKILL_STATE_SOFT_BLOCKED; + } else { + toshiba_acpi.rfk_dev->state = RFKILL_STATE_HARD_BLOCKED; + } + + ret = rfkill_register(toshiba_acpi.rfk_dev); + if (ret) { + printk(MY_ERR "unable to register rfkill device\n"); + toshiba_acpi_exit(); + return -ENOMEM; + } + } + + /* Register input device for kill switch */ + toshiba_acpi.poll_dev = input_allocate_polled_device(); + if (!toshiba_acpi.poll_dev) { + printk(MY_ERR "unable to allocate kill-switch input device\n"); + toshiba_acpi_exit(); + return -ENOMEM; + } + toshiba_acpi.poll_dev->private = &toshiba_acpi; + toshiba_acpi.poll_dev->poll = bt_poll_rfkill; + toshiba_acpi.poll_dev->poll_interval = 1000; /* msecs */ + + toshiba_acpi.poll_dev->input->name = toshiba_acpi.rfk_name; + toshiba_acpi.poll_dev->input->id.bustype = BUS_HOST; + toshiba_acpi.poll_dev->input->id.vendor = 0x0930; /* Toshiba USB ID */ + set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit); + set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit); + input_report_switch(toshiba_acpi.poll_dev->input, SW_RFKILL_ALL, TRUE); + + ret = input_register_polled_device(toshiba_acpi.poll_dev); + if (ret) { + printk(MY_ERR "unable to register kill-switch input device\n"); + rfkill_free(toshiba_acpi.rfk_dev); + toshiba_acpi.rfk_dev = NULL; + toshiba_acpi_exit(); + return ret; + } + + return 0; } module_init(toshiba_acpi_init); |