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path: root/drivers/platform/x86/toshiba_acpi.c
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Diffstat (limited to 'drivers/platform/x86/toshiba_acpi.c')
-rw-r--r--drivers/platform/x86/toshiba_acpi.c216
1 files changed, 205 insertions, 11 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 77bf5d8f893a..37aa14798551 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -46,6 +46,8 @@
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
+#include <linux/input.h>
+#include <linux/slab.h>
#include <asm/uaccess.h>
@@ -62,9 +64,10 @@ MODULE_LICENSE("GPL");
/* Toshiba ACPI method paths */
#define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM"
-#define METHOD_HCI_1 "\\_SB_.VALD.GHCI"
-#define METHOD_HCI_2 "\\_SB_.VALZ.GHCI"
+#define TOSH_INTERFACE_1 "\\_SB_.VALD"
+#define TOSH_INTERFACE_2 "\\_SB_.VALZ"
#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
+#define GHCI_METHOD ".GHCI"
/* Toshiba HCI interface definitions
*
@@ -116,6 +119,36 @@ static const struct acpi_device_id toshiba_device_ids[] = {
};
MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
+struct key_entry {
+ char type;
+ u16 code;
+ u16 keycode;
+};
+
+enum {KE_KEY, KE_END};
+
+static struct key_entry toshiba_acpi_keymap[] = {
+ {KE_KEY, 0x101, KEY_MUTE},
+ {KE_KEY, 0x13b, KEY_COFFEE},
+ {KE_KEY, 0x13c, KEY_BATTERY},
+ {KE_KEY, 0x13d, KEY_SLEEP},
+ {KE_KEY, 0x13e, KEY_SUSPEND},
+ {KE_KEY, 0x13f, KEY_SWITCHVIDEOMODE},
+ {KE_KEY, 0x140, KEY_BRIGHTNESSDOWN},
+ {KE_KEY, 0x141, KEY_BRIGHTNESSUP},
+ {KE_KEY, 0x142, KEY_WLAN},
+ {KE_KEY, 0x143, KEY_PROG1},
+ {KE_KEY, 0xb05, KEY_PROG2},
+ {KE_KEY, 0xb06, KEY_WWW},
+ {KE_KEY, 0xb07, KEY_MAIL},
+ {KE_KEY, 0xb30, KEY_STOP},
+ {KE_KEY, 0xb31, KEY_PREVIOUSSONG},
+ {KE_KEY, 0xb32, KEY_NEXTSONG},
+ {KE_KEY, 0xb33, KEY_PLAYPAUSE},
+ {KE_KEY, 0xb5a, KEY_MEDIA},
+ {KE_END, 0, 0},
+};
+
/* utility
*/
@@ -251,6 +284,8 @@ static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result)
struct toshiba_acpi_dev {
struct platform_device *p_dev;
struct rfkill *bt_rfk;
+ struct input_dev *hotkey_dev;
+ acpi_handle handle;
const char *bt_name;
@@ -711,8 +746,158 @@ static struct backlight_ops toshiba_backlight_data = {
.update_status = set_lcd_status,
};
+static struct key_entry *toshiba_acpi_get_entry_by_scancode(unsigned int code)
+{
+ struct key_entry *key;
+
+ for (key = toshiba_acpi_keymap; key->type != KE_END; key++)
+ if (code == key->code)
+ return key;
+
+ return NULL;
+}
+
+static struct key_entry *toshiba_acpi_get_entry_by_keycode(unsigned int code)
+{
+ struct key_entry *key;
+
+ for (key = toshiba_acpi_keymap; key->type != KE_END; key++)
+ if (code == key->keycode && key->type == KE_KEY)
+ return key;
+
+ return NULL;
+}
+
+static int toshiba_acpi_getkeycode(struct input_dev *dev,
+ unsigned int scancode, unsigned int *keycode)
+{
+ struct key_entry *key = toshiba_acpi_get_entry_by_scancode(scancode);
+
+ if (key && key->type == KE_KEY) {
+ *keycode = key->keycode;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int toshiba_acpi_setkeycode(struct input_dev *dev,
+ unsigned int scancode, unsigned int keycode)
+{
+ struct key_entry *key;
+ unsigned int old_keycode;
+
+ key = toshiba_acpi_get_entry_by_scancode(scancode);
+ if (key && key->type == KE_KEY) {
+ old_keycode = key->keycode;
+ key->keycode = keycode;
+ set_bit(keycode, dev->keybit);
+ if (!toshiba_acpi_get_entry_by_keycode(old_keycode))
+ clear_bit(old_keycode, dev->keybit);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static void toshiba_acpi_notify(acpi_handle handle, u32 event, void *context)
+{
+ u32 hci_result, value;
+ struct key_entry *key;
+
+ if (event != 0x80)
+ return;
+ do {
+ hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ if (value == 0x100)
+ continue;
+ /* act on key press; ignore key release */
+ if (value & 0x80)
+ continue;
+
+ key = toshiba_acpi_get_entry_by_scancode
+ (value);
+ if (!key) {
+ printk(MY_INFO "Unknown key %x\n",
+ value);
+ continue;
+ }
+ input_report_key(toshiba_acpi.hotkey_dev,
+ key->keycode, 1);
+ input_sync(toshiba_acpi.hotkey_dev);
+ input_report_key(toshiba_acpi.hotkey_dev,
+ key->keycode, 0);
+ input_sync(toshiba_acpi.hotkey_dev);
+ } else if (hci_result == HCI_NOT_SUPPORTED) {
+ /* This is a workaround for an unresolved issue on
+ * some machines where system events sporadically
+ * become disabled. */
+ hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+ printk(MY_NOTICE "Re-enabled hotkeys\n");
+ }
+ } while (hci_result != HCI_EMPTY);
+}
+
+static int toshiba_acpi_setup_keyboard(char *device)
+{
+ acpi_status status;
+ acpi_handle handle;
+ int result;
+ const struct key_entry *key;
+
+ status = acpi_get_handle(NULL, device, &handle);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_INFO "Unable to get notification device\n");
+ return -ENODEV;
+ }
+
+ toshiba_acpi.handle = handle;
+
+ status = acpi_evaluate_object(handle, "ENAB", NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_INFO "Unable to enable hotkeys\n");
+ return -ENODEV;
+ }
+
+ status = acpi_install_notify_handler(handle, ACPI_DEVICE_NOTIFY,
+ toshiba_acpi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ printk(MY_INFO "Unable to install hotkey notification\n");
+ return -ENODEV;
+ }
+
+ toshiba_acpi.hotkey_dev = input_allocate_device();
+ if (!toshiba_acpi.hotkey_dev) {
+ printk(MY_INFO "Unable to register input device\n");
+ return -ENOMEM;
+ }
+
+ toshiba_acpi.hotkey_dev->name = "Toshiba input device";
+ toshiba_acpi.hotkey_dev->phys = device;
+ toshiba_acpi.hotkey_dev->id.bustype = BUS_HOST;
+ toshiba_acpi.hotkey_dev->getkeycode = toshiba_acpi_getkeycode;
+ toshiba_acpi.hotkey_dev->setkeycode = toshiba_acpi_setkeycode;
+
+ for (key = toshiba_acpi_keymap; key->type != KE_END; key++) {
+ set_bit(EV_KEY, toshiba_acpi.hotkey_dev->evbit);
+ set_bit(key->keycode, toshiba_acpi.hotkey_dev->keybit);
+ }
+
+ result = input_register_device(toshiba_acpi.hotkey_dev);
+ if (result) {
+ printk(MY_INFO "Unable to register input device\n");
+ return result;
+ }
+
+ return 0;
+}
+
static void toshiba_acpi_exit(void)
{
+ if (toshiba_acpi.hotkey_dev)
+ input_unregister_device(toshiba_acpi.hotkey_dev);
+
if (toshiba_acpi.bt_rfk) {
rfkill_unregister(toshiba_acpi.bt_rfk);
rfkill_destroy(toshiba_acpi.bt_rfk);
@@ -726,6 +911,9 @@ static void toshiba_acpi_exit(void)
if (toshiba_proc_dir)
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+ acpi_remove_notify_handler(toshiba_acpi.handle, ACPI_DEVICE_NOTIFY,
+ toshiba_acpi_notify);
+
platform_device_unregister(toshiba_acpi.p_dev);
return;
@@ -737,16 +925,21 @@ static int __init toshiba_acpi_init(void)
u32 hci_result;
bool bt_present;
int ret = 0;
+ struct backlight_properties props;
if (acpi_disabled)
return -ENODEV;
/* simple device detection: look for HCI method */
- if (is_valid_acpi_path(METHOD_HCI_1))
- method_hci = METHOD_HCI_1;
- else if (is_valid_acpi_path(METHOD_HCI_2))
- method_hci = METHOD_HCI_2;
- else
+ if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) {
+ method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
+ if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1))
+ printk(MY_INFO "Unable to activate hotkeys\n");
+ } else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) {
+ method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
+ if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
+ printk(MY_INFO "Unable to activate hotkeys\n");
+ } else
return -ENODEV;
printk(MY_INFO "Toshiba Laptop ACPI Extras version %s\n",
@@ -783,10 +976,12 @@ static int __init toshiba_acpi_init(void)
}
}
+ props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
toshiba_backlight_device = backlight_device_register("toshiba",
- &toshiba_acpi.p_dev->dev,
- NULL,
- &toshiba_backlight_data);
+ &toshiba_acpi.p_dev->dev,
+ NULL,
+ &toshiba_backlight_data,
+ &props);
if (IS_ERR(toshiba_backlight_device)) {
ret = PTR_ERR(toshiba_backlight_device);
@@ -795,7 +990,6 @@ static int __init toshiba_acpi_init(void)
toshiba_acpi_exit();
return ret;
}
- toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
/* Register rfkill switch for Bluetooth */
if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
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