diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/asus-laptop.c | 369 |
1 files changed, 180 insertions, 189 deletions
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c index 74463a07d48b..8834405be1fd 100644 --- a/drivers/platform/x86/asus-laptop.c +++ b/drivers/platform/x86/asus-laptop.c @@ -201,6 +201,8 @@ ASUS_HANDLE(kled_get, ASUS_HOTK_PREFIX "GLKB"); */ struct asus_hotk { char *name; /* laptop name */ + + struct platform_device *platform_device; struct acpi_device *device; /* the device we are in */ acpi_handle handle; /* the handle of the hotk device */ char status; /* status of the hotk, for LEDs, ... */ @@ -222,33 +224,6 @@ static struct acpi_table_header *asus_info; /* The actual device the driver binds to */ static struct asus_hotk *hotk; -/* - * The hotkey driver declaration - */ -static const struct acpi_device_id asus_device_ids[] = { - {"ATK0100", 0}, - {"ATK0101", 0}, - {"", 0}, -}; -MODULE_DEVICE_TABLE(acpi, asus_device_ids); - -static int asus_hotk_add(struct acpi_device *device); -static int asus_hotk_remove(struct acpi_device *device, int type); -static void asus_hotk_notify(struct acpi_device *device, u32 event); - -static struct acpi_driver asus_hotk_driver = { - .name = ASUS_HOTK_NAME, - .class = ASUS_HOTK_CLASS, - .owner = THIS_MODULE, - .ids = asus_device_ids, - .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, - .ops = { - .add = asus_hotk_add, - .remove = asus_hotk_remove, - .notify = asus_hotk_notify, - }, -}; - /* The backlight device /sys/class/backlight */ static struct backlight_device *asus_backlight_device; @@ -936,7 +911,7 @@ static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode) return -EINVAL; } -static void asus_hotk_notify(struct acpi_device *device, u32 event) +static void asus_acpi_notify(struct acpi_device *device, u32 event) { static struct key_entry *key; u16 count; @@ -1013,19 +988,49 @@ static struct attribute *asuspf_attributes[] = { NULL }; -static struct attribute_group asuspf_attribute_group = { +static struct attribute_group platform_attribute_group = { .attrs = asuspf_attributes }; -static struct platform_driver asuspf_driver = { +static int asus_platform_init(void) +{ + int result; + + hotk->platform_device = platform_device_alloc(ASUS_HOTK_FILE, -1); + if (!hotk->platform_device) + return -ENOMEM; + + result = platform_device_add(hotk->platform_device); + if (result) + goto fail_platform_device; + + result = sysfs_create_group(&hotk->platform_device->dev.kobj, + &platform_attribute_group); + if (result) + goto fail_sysfs; + return 0; + +fail_sysfs: + platform_device_del(hotk->platform_device); +fail_platform_device: + platform_device_put(hotk->platform_device); + return result; +} + +static void asus_platform_exit(void) +{ + sysfs_remove_group(&hotk->platform_device->dev.kobj, + &platform_attribute_group); + platform_device_unregister(hotk->platform_device); +} + +static struct platform_driver platform_driver = { .driver = { .name = ASUS_HOTK_FILE, .owner = THIS_MODULE, } }; -static struct platform_device *asuspf_device; - static void asus_hotk_add_fs(void) { ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); @@ -1196,7 +1201,7 @@ static int asus_hotk_get_info(void) return AE_OK; } -static int asus_input_init(void) +static int asus_input_init(struct device *dev) { const struct key_entry *key; int result; @@ -1207,6 +1212,7 @@ static int asus_input_init(void) return 0; } hotk->inputdev->name = "Asus Laptop extra buttons"; + hotk->inputdev->dev.parent = dev; hotk->inputdev->phys = ASUS_HOTK_FILE "/input0"; hotk->inputdev->id.bustype = BUS_HOST; hotk->inputdev->getkeycode = asus_getkeycode; @@ -1228,101 +1234,6 @@ static int asus_input_init(void) return result; } -static int asus_hotk_check(void) -{ - int result = 0; - - result = acpi_bus_get_status(hotk->device); - if (result) - return result; - - if (hotk->device->status.present) { - result = asus_hotk_get_info(); - } else { - pr_err("Hotkey device not present, aborting\n"); - return -EINVAL; - } - - return result; -} - -static int asus_hotk_found; - -static int asus_hotk_add(struct acpi_device *device) -{ - int result; - - pr_notice("Asus Laptop Support version %s\n", - ASUS_LAPTOP_VERSION); - - hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL); - if (!hotk) - return -ENOMEM; - - hotk->handle = device->handle; - strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); - strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); - device->driver_data = hotk; - hotk->device = device; - - result = asus_hotk_check(); - if (result) - goto end; - - asus_hotk_add_fs(); - - asus_hotk_found = 1; - - /* WLED and BLED are on by default */ - if (bluetooth_status != -1) - write_status(bt_switch_handle, !!bluetooth_status, BT_ON); - if (wireless_status != -1) - write_status(wl_switch_handle, !!wireless_status, WL_ON); - - /* If the h/w switch is off, we need to check the real status */ - write_status(NULL, read_status(BT_ON), BT_ON); - write_status(NULL, read_status(WL_ON), WL_ON); - - /* LCD Backlight is on by default */ - write_status(NULL, 1, LCD_ON); - - /* Keyboard Backlight is on by default */ - if (kled_set_handle) - set_kled_lvl(1); - - /* LED display is off by default */ - hotk->ledd_status = 0xFFF; - - /* Set initial values of light sensor and level */ - hotk->light_switch = 0; /* Default to light sensor disabled */ - hotk->light_level = 5; /* level 5 for sensor sensitivity */ - - if (ls_switch_handle) - set_light_sens_switch(hotk->light_switch); - - if (ls_level_handle) - set_light_sens_level(hotk->light_level); - - /* GPS is on by default */ - write_status(NULL, 1, GPS_ON); - -end: - if (result) { - kfree(hotk->name); - kfree(hotk); - } - - return result; -} - -static int asus_hotk_remove(struct acpi_device *device, int type) -{ - kfree(hotk->name); - kfree(hotk); - - return 0; -} - static void asus_backlight_exit(void) { if (asus_backlight_device) @@ -1350,18 +1261,6 @@ static void asus_input_exit(void) input_unregister_device(hotk->inputdev); } -static void __exit asus_laptop_exit(void) -{ - asus_backlight_exit(); - asus_led_exit(); - asus_input_exit(); - - acpi_bus_unregister_driver(&asus_hotk_driver); - sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); - platform_device_unregister(asuspf_device); - platform_driver_unregister(&asuspf_driver); -} - static int asus_backlight_init(struct device *dev) { struct backlight_device *bd; @@ -1448,87 +1347,179 @@ out: return rv; } -static int __init asus_laptop_init(void) + +static bool asus_device_present; + +static int __devinit asus_acpi_init(struct acpi_device *device) { - int result; + int result = 0; - result = acpi_bus_register_driver(&asus_hotk_driver); - if (result < 0) + result = acpi_bus_get_status(hotk->device); + if (result) return result; - - /* - * This is a bit of a kludge. We only want this module loaded - * for ASUS systems, but there's currently no way to probe the - * ACPI namespace for ASUS HIDs. So we just return failure if - * we didn't find one, which will cause the module to be - * unloaded. - */ - if (!asus_hotk_found) { - acpi_bus_unregister_driver(&asus_hotk_driver); + if (!hotk->device->status.present) { + pr_err("Hotkey device not present, aborting\n"); return -ENODEV; } - result = asus_input_init(); + result = asus_hotk_get_info(); if (result) - goto fail_input; + return result; - /* Register platform stuff */ - result = platform_driver_register(&asuspf_driver); - if (result) - goto fail_platform_driver; + asus_hotk_add_fs(); - asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); - if (!asuspf_device) { - result = -ENOMEM; - goto fail_platform_device1; - } + /* WLED and BLED are on by default */ + write_status(bt_switch_handle, 1, BT_ON); + write_status(wl_switch_handle, 1, WL_ON); - result = platform_device_add(asuspf_device); - if (result) - goto fail_platform_device2; + /* If the h/w switch is off, we need to check the real status */ + write_status(NULL, read_status(BT_ON), BT_ON); + write_status(NULL, read_status(WL_ON), WL_ON); + + /* LCD Backlight is on by default */ + write_status(NULL, 1, LCD_ON); - result = sysfs_create_group(&asuspf_device->dev.kobj, - &asuspf_attribute_group); + /* Keyboard Backlight is on by default */ + if (kled_set_handle) + set_kled_lvl(1); + + /* LED display is off by default */ + hotk->ledd_status = 0xFFF; + + /* Set initial values of light sensor and level */ + hotk->light_switch = 0; /* Default to light sensor disabled */ + hotk->light_level = 5; /* level 5 for sensor sensitivity */ + + if (ls_switch_handle) + set_light_sens_switch(hotk->light_switch); + + if (ls_level_handle) + set_light_sens_level(hotk->light_level); + + /* GPS is on by default */ + write_status(NULL, 1, GPS_ON); + return result; +} + +static int __devinit asus_acpi_add(struct acpi_device *device) +{ + int result; + + pr_notice("Asus Laptop Support version %s\n", + ASUS_LAPTOP_VERSION); + hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL); + if (!hotk) + return -ENOMEM; + hotk->handle = device->handle; + strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); + strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); + device->driver_data = hotk; + hotk->device = device; + + result = asus_acpi_init(device); if (result) - goto fail_sysfs; + goto fail_platform; - result = asus_led_init(&asuspf_device->dev); + /* + * Register the platform device first. It is used as a parent for the + * sub-devices below. + */ + result = asus_platform_init(); if (result) - goto fail_led; + goto fail_platform; if (!acpi_video_backlight_support()) { - result = asus_backlight_init(&asuspf_device->dev); + result = asus_backlight_init(&hotk->platform_device->dev); if (result) goto fail_backlight; } else - pr_info("Brightness ignored, must be controlled by " - "ACPI video driver\n"); + pr_info("Backlight controlled by ACPI video driver\n"); + result = asus_input_init(&hotk->platform_device->dev); + if (result) + goto fail_input; + + result = asus_led_init(&hotk->platform_device->dev); + if (result) + goto fail_led; + + asus_device_present = true; return 0; +fail_led: + asus_input_exit(); +fail_input: + asus_backlight_exit(); fail_backlight: - asus_led_exit(); + asus_platform_exit(); +fail_platform: + kfree(hotk->name); + kfree(hotk); -fail_led: - sysfs_remove_group(&asuspf_device->dev.kobj, - &asuspf_attribute_group); + return result; +} -fail_sysfs: - platform_device_del(asuspf_device); +static int asus_acpi_remove(struct acpi_device *device, int type) +{ + asus_backlight_exit(); + asus_led_exit(); + asus_input_exit(); + asus_platform_exit(); + + kfree(hotk->name); + kfree(hotk); + return 0; +} + +static const struct acpi_device_id asus_device_ids[] = { + {"ATK0100", 0}, + {"ATK0101", 0}, + {"", 0}, +}; +MODULE_DEVICE_TABLE(acpi, asus_device_ids); -fail_platform_device2: - platform_device_put(asuspf_device); +static struct acpi_driver asus_acpi_driver = { + .name = ASUS_HOTK_NAME, + .class = ASUS_HOTK_CLASS, + .owner = THIS_MODULE, + .ids = asus_device_ids, + .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, + .ops = { + .add = asus_acpi_add, + .remove = asus_acpi_remove, + .notify = asus_acpi_notify, + }, +}; -fail_platform_device1: - platform_driver_unregister(&asuspf_driver); +static int __init asus_laptop_init(void) +{ + int result; -fail_platform_driver: - asus_input_exit(); + result = platform_driver_register(&platform_driver); + if (result < 0) + return result; -fail_input: + result = acpi_bus_register_driver(&asus_acpi_driver); + if (result < 0) + goto fail_acpi_driver; + if (!asus_device_present) { + result = -ENODEV; + goto fail_no_device; + } + return 0; +fail_no_device: + acpi_bus_unregister_driver(&asus_acpi_driver); +fail_acpi_driver: + platform_driver_unregister(&platform_driver); return result; } +static void __exit asus_laptop_exit(void) +{ + acpi_bus_unregister_driver(&asus_acpi_driver); + platform_driver_unregister(&platform_driver); +} + module_init(asus_laptop_init); module_exit(asus_laptop_exit); |