1 files changed, 253 insertions, 8 deletions

diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c
index 0a43c8e0eff3..8a649f40d162 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);