diff options
Diffstat (limited to 'drivers/platform/x86/toshiba_acpi.c')
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 206 |
1 files changed, 199 insertions, 7 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 77bf5d8f893a..26c211724acf 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -46,6 +46,7 @@ #include <linux/backlight.h> #include <linux/platform_device.h> #include <linux/rfkill.h> +#include <linux/input.h> #include <asm/uaccess.h> @@ -62,9 +63,10 @@ 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 +118,36 @@ 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 +283,8 @@ 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 +745,159 @@ static struct backlight_ops toshiba_backlight_data = { .update_status = set_lcd_status, }; +static struct key_entry *toshiba_acpi_get_entry_by_scancode(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(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, int scancode, + 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, int scancode, + int keycode) +{ + struct key_entry *key; + int old_keycode; + + if (keycode < 0 || keycode > KEY_MAX) + return -EINVAL; + + 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; + else if (value & 0x80) { + key = toshiba_acpi_get_entry_by_scancode + (value & ~0x80); + if (!key) { + printk(MY_INFO "Unknown key %x\n", + value & ~0x80); + 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; @@ -742,11 +930,15 @@ static int __init toshiba_acpi_init(void) 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", |