diff options
Diffstat (limited to 'drivers/misc/panasonic-laptop.c')
| -rw-r--r-- | drivers/misc/panasonic-laptop.c | 766 |
1 files changed, 0 insertions, 766 deletions
diff --git a/drivers/misc/panasonic-laptop.c b/drivers/misc/panasonic-laptop.c deleted file mode 100644 index 4a1bc64485d5..000000000000 --- a/drivers/misc/panasonic-laptop.c +++ /dev/null @@ -1,766 +0,0 @@ -/* - * Panasonic HotKey and LCD brightness control driver - * (C) 2004 Hiroshi Miura <miura@da-cha.org> - * (C) 2004 NTT DATA Intellilink Co. http://www.intellilink.co.jp/ - * (C) YOKOTA Hiroshi <yokota (at) netlab. is. tsukuba. ac. jp> - * (C) 2004 David Bronaugh <dbronaugh> - * (C) 2006-2008 Harald Welte <laforge@gnumonks.org> - * - * derived from toshiba_acpi.c, Copyright (C) 2002-2004 John Belmonte - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * publicshed by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - *--------------------------------------------------------------------------- - * - * ChangeLog: - * Sep.23, 2008 Harald Welte <laforge@gnumonks.org> - * -v0.95 rename driver from drivers/acpi/pcc_acpi.c to - * drivers/misc/panasonic-laptop.c - * - * Jul.04, 2008 Harald Welte <laforge@gnumonks.org> - * -v0.94 replace /proc interface with device attributes - * support {set,get}keycode on th input device - * - * Jun.27, 2008 Harald Welte <laforge@gnumonks.org> - * -v0.92 merge with 2.6.26-rc6 input API changes - * remove broken <= 2.6.15 kernel support - * resolve all compiler warnings - * various coding style fixes (checkpatch.pl) - * add support for backlight api - * major code restructuring - * - * Dac.28, 2007 Harald Welte <laforge@gnumonks.org> - * -v0.91 merge with 2.6.24-rc6 ACPI changes - * - * Nov.04, 2006 Hiroshi Miura <miura@da-cha.org> - * -v0.9 remove warning about section reference. - * remove acpi_os_free - * add /proc/acpi/pcc/brightness interface for HAL access - * merge dbronaugh's enhancement - * Aug.17, 2004 David Bronaugh (dbronaugh) - * - Added screen brightness setting interface - * Thanks to FreeBSD crew (acpi_panasonic.c) - * for the ideas I needed to accomplish it - * - * May.29, 2006 Hiroshi Miura <miura@da-cha.org> - * -v0.8.4 follow to change keyinput structure - * thanks Fabian Yamaguchi <fabs@cs.tu-berlin.de>, - * Jacob Bower <jacob.bower@ic.ac.uk> and - * Hiroshi Yokota for providing solutions. - * - * Oct.02, 2004 Hiroshi Miura <miura@da-cha.org> - * -v0.8.2 merge code of YOKOTA Hiroshi - * <yokota@netlab.is.tsukuba.ac.jp>. - * Add sticky key mode interface. - * Refactoring acpi_pcc_generate_keyinput(). - * - * Sep.15, 2004 Hiroshi Miura <miura@da-cha.org> - * -v0.8 Generate key input event on input subsystem. - * This is based on yet another driver written by - * Ryuta Nakanishi. - * - * Sep.10, 2004 Hiroshi Miura <miura@da-cha.org> - * -v0.7 Change proc interface functions using seq_file - * facility as same as other ACPI drivers. - * - * Aug.28, 2004 Hiroshi Miura <miura@da-cha.org> - * -v0.6.4 Fix a silly error with status checking - * - * Aug.25, 2004 Hiroshi Miura <miura@da-cha.org> - * -v0.6.3 replace read_acpi_int by standard function - * acpi_evaluate_integer - * some clean up and make smart copyright notice. - * fix return value of pcc_acpi_get_key() - * fix checking return value of acpi_bus_register_driver() - * - * Aug.22, 2004 David Bronaugh <dbronaugh@linuxboxen.org> - * -v0.6.2 Add check on ACPI data (num_sifr) - * Coding style cleanups, better error messages/handling - * Fixed an off-by-one error in memory allocation - * - * Aug.21, 2004 David Bronaugh <dbronaugh@linuxboxen.org> - * -v0.6.1 Fix a silly error with status checking - * - * Aug.20, 2004 David Bronaugh <dbronaugh@linuxboxen.org> - * - v0.6 Correct brightness controls to reflect reality - * based on information gleaned by Hiroshi Miura - * and discussions with Hiroshi Miura - * - * Aug.10, 2004 Hiroshi Miura <miura@da-cha.org> - * - v0.5 support LCD brightness control - * based on the disclosed information by MEI. - * - * Jul.25, 2004 Hiroshi Miura <miura@da-cha.org> - * - v0.4 first post version - * add function to retrive SIFR - * - * Jul.24, 2004 Hiroshi Miura <miura@da-cha.org> - * - v0.3 get proper status of hotkey - * - * Jul.22, 2004 Hiroshi Miura <miura@da-cha.org> - * - v0.2 add HotKey handler - * - * Jul.17, 2004 Hiroshi Miura <miura@da-cha.org> - * - v0.1 start from toshiba_acpi driver written by John Belmonte - * - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/backlight.h> -#include <linux/ctype.h> -#include <linux/seq_file.h> -#include <linux/uaccess.h> -#include <acpi/acpi_bus.h> -#include <acpi/acpi_drivers.h> -#include <linux/input.h> - - -#ifndef ACPI_HOTKEY_COMPONENT -#define ACPI_HOTKEY_COMPONENT 0x10000000 -#endif - -#define _COMPONENT ACPI_HOTKEY_COMPONENT - -MODULE_AUTHOR("Hiroshi Miura, David Bronaugh and Harald Welte"); -MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops"); -MODULE_LICENSE("GPL"); - -#define LOGPREFIX "pcc_acpi: " - -/* Define ACPI PATHs */ -/* Lets note hotkeys */ -#define METHOD_HKEY_QUERY "HINF" -#define METHOD_HKEY_SQTY "SQTY" -#define METHOD_HKEY_SINF "SINF" -#define METHOD_HKEY_SSET "SSET" -#define HKEY_NOTIFY 0x80 - -#define ACPI_PCC_DRIVER_NAME "Panasonic Laptop Support" -#define ACPI_PCC_DEVICE_NAME "Hotkey" -#define ACPI_PCC_CLASS "pcc" - -#define ACPI_PCC_INPUT_PHYS "panasonic/hkey0" - -/* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent - ENV_STATEs: Normal temp=0x01, High temp=0x81, N/A=0x00 -*/ -enum SINF_BITS { SINF_NUM_BATTERIES = 0, - SINF_LCD_TYPE, - SINF_AC_MAX_BRIGHT, - SINF_AC_MIN_BRIGHT, - SINF_AC_CUR_BRIGHT, - SINF_DC_MAX_BRIGHT, - SINF_DC_MIN_BRIGHT, - SINF_DC_CUR_BRIGHT, - SINF_MUTE, - SINF_RESERVED, - SINF_ENV_STATE, - SINF_STICKY_KEY = 0x80, - }; -/* R1 handles SINF_AC_CUR_BRIGHT as SINF_CUR_BRIGHT, doesn't know AC state */ - -static int acpi_pcc_hotkey_add(struct acpi_device *device); -static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type); -static int acpi_pcc_hotkey_resume(struct acpi_device *device); - -static const struct acpi_device_id pcc_device_ids[] = { - { "MAT0012", 0}, - { "MAT0013", 0}, - { "MAT0018", 0}, - { "MAT0019", 0}, - { "", 0}, -}; - -static struct acpi_driver acpi_pcc_driver = { - .name = ACPI_PCC_DRIVER_NAME, - .class = ACPI_PCC_CLASS, - .ids = pcc_device_ids, - .ops = { - .add = acpi_pcc_hotkey_add, - .remove = acpi_pcc_hotkey_remove, - .resume = acpi_pcc_hotkey_resume, - }, -}; - -#define KEYMAP_SIZE 11 -static const int initial_keymap[KEYMAP_SIZE] = { - /* 0 */ KEY_RESERVED, - /* 1 */ KEY_BRIGHTNESSDOWN, - /* 2 */ KEY_BRIGHTNESSUP, - /* 3 */ KEY_DISPLAYTOGGLE, - /* 4 */ KEY_MUTE, - /* 5 */ KEY_VOLUMEDOWN, - /* 6 */ KEY_VOLUMEUP, - /* 7 */ KEY_SLEEP, - /* 8 */ KEY_PROG1, /* Change CPU boost */ - /* 9 */ KEY_BATTERY, - /* 10 */ KEY_SUSPEND, -}; - -struct pcc_acpi { - acpi_handle handle; - unsigned long num_sifr; - int sticky_mode; - u32 *sinf; - struct acpi_device *device; - struct input_dev *input_dev; - struct backlight_device *backlight; - int keymap[KEYMAP_SIZE]; -}; - -struct pcc_keyinput { - struct acpi_hotkey *hotkey; -}; - -/* method access functions */ -static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val) -{ - union acpi_object in_objs[] = { - { .integer.type = ACPI_TYPE_INTEGER, - .integer.value = func, }, - { .integer.type = ACPI_TYPE_INTEGER, - .integer.value = val, }, - }; - struct acpi_object_list params = { - .count = ARRAY_SIZE(in_objs), - .pointer = in_objs, - }; - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE("acpi_pcc_write_sset"); - - status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET, - ¶ms, NULL); - - return status == AE_OK; -} - -static inline int acpi_pcc_get_sqty(struct acpi_device *device) -{ - unsigned long long s; - acpi_status status; - - ACPI_FUNCTION_TRACE("acpi_pcc_get_sqty"); - - status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY, - NULL, &s); - if (ACPI_SUCCESS(status)) - return s; - else { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "evaluation error HKEY.SQTY\n")); - return -EINVAL; - } -} - -static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc, u32 *sinf) -{ - acpi_status status; - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; - union acpi_object *hkey = NULL; - int i; - - ACPI_FUNCTION_TRACE("acpi_pcc_retrieve_biosdata"); - - status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, 0, - &buffer); - if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "evaluation error HKEY.SINF\n")); - return 0; - } - - hkey = buffer.pointer; - if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n")); - goto end; - } - - if (pcc->num_sifr < hkey->package.count) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "SQTY reports bad SINF length\n")); - status = AE_ERROR; - goto end; - } - - for (i = 0; i < hkey->package.count; i++) { - union acpi_object *element = &(hkey->package.elements[i]); - if (likely(element->type == ACPI_TYPE_INTEGER)) { - sinf[i] = element->integer.value; - } else - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Invalid HKEY.SINF data\n")); - } - sinf[hkey->package.count] = -1; - -end: - kfree(buffer.pointer); - return status == AE_OK; -} - -/* backlight API interface functions */ - -/* This driver currently treats AC and DC brightness identical, - * since we don't need to invent an interface to the core ACPI - * logic to receive events in case a power supply is plugged in - * or removed */ - -static int bl_get(struct backlight_device *bd) -{ - struct pcc_acpi *pcc = bl_get_data(bd); - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) - return -EIO; - - return pcc->sinf[SINF_AC_CUR_BRIGHT]; -} - -static int bl_set_status(struct backlight_device *bd) -{ - struct pcc_acpi *pcc = bl_get_data(bd); - int bright = bd->props.brightness; - int rc; - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) - return -EIO; - - if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT]) - bright = pcc->sinf[SINF_AC_MIN_BRIGHT]; - - if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT]) - bright = pcc->sinf[SINF_DC_MIN_BRIGHT]; - - if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] || - bright > pcc->sinf[SINF_AC_MAX_BRIGHT]) - return -EINVAL; - - rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright); - if (rc < 0) - return rc; - - return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); -} - -static struct backlight_ops pcc_backlight_ops = { - .get_brightness = bl_get, - .update_status = bl_set_status, -}; - - -/* sysfs user interface functions */ - -static ssize_t show_numbatt(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct acpi_device *acpi = to_acpi_device(dev); - struct pcc_acpi *pcc = acpi_driver_data(acpi); - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) - return -EIO; - - return sprintf(buf, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); -} - -static ssize_t show_lcdtype(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct acpi_device *acpi = to_acpi_device(dev); - struct pcc_acpi *pcc = acpi_driver_data(acpi); - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) - return -EIO; - - return sprintf(buf, "%u\n", pcc->sinf[SINF_LCD_TYPE]); -} - -static ssize_t show_mute(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct acpi_device *acpi = to_acpi_device(dev); - struct pcc_acpi *pcc = acpi_driver_data(acpi); - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) - return -EIO; - - return sprintf(buf, "%u\n", pcc->sinf[SINF_MUTE]); -} - -static ssize_t show_sticky(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct acpi_device *acpi = to_acpi_device(dev); - struct pcc_acpi *pcc = acpi_driver_data(acpi); - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) - return -EIO; - - return sprintf(buf, "%u\n", pcc->sinf[SINF_STICKY_KEY]); -} - -static ssize_t set_sticky(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct acpi_device *acpi = to_acpi_device(dev); - struct pcc_acpi *pcc = acpi_driver_data(acpi); - int val; - - if (count && sscanf(buf, "%i", &val) == 1 && - (val == 0 || val == 1)) { - acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val); - pcc->sticky_mode = val; - } - - return count; -} - -static DEVICE_ATTR(numbatt, S_IRUGO, show_numbatt, NULL); -static DEVICE_ATTR(lcdtype, S_IRUGO, show_lcdtype, NULL); -static DEVICE_ATTR(mute, S_IRUGO, show_mute, NULL); -static DEVICE_ATTR(sticky_key, S_IRUGO | S_IWUSR, show_sticky, set_sticky); - -static struct attribute *pcc_sysfs_entries[] = { - &dev_attr_numbatt.attr, - &dev_attr_lcdtype.attr, - &dev_attr_mute.attr, - &dev_attr_sticky_key.attr, - NULL, -}; - -static struct attribute_group pcc_attr_group = { - .name = NULL, /* put in device directory */ - .attrs = pcc_sysfs_entries, -}; - - -/* hotkey input device driver */ - -static int pcc_getkeycode(struct input_dev *dev, int scancode, int *keycode) -{ - struct pcc_acpi *pcc = input_get_drvdata(dev); - - if (scancode >= ARRAY_SIZE(pcc->keymap)) - return -EINVAL; - - *keycode = pcc->keymap[scancode]; - - return 0; -} - -static int keymap_get_by_keycode(struct pcc_acpi *pcc, int keycode) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(pcc->keymap); i++) { - if (pcc->keymap[i] == keycode) - return i+1; - } - - return 0; -} - -static int pcc_setkeycode(struct input_dev *dev, int scancode, int keycode) -{ - struct pcc_acpi *pcc = input_get_drvdata(dev); - int oldkeycode; - - if (scancode >= ARRAY_SIZE(pcc->keymap)) - return -EINVAL; - - if (keycode < 0 || keycode > KEY_MAX) - return -EINVAL; - - oldkeycode = pcc->keymap[scancode]; - pcc->keymap[scancode] = keycode; - - set_bit(keycode, dev->keybit); - - if (!keymap_get_by_keycode(pcc, oldkeycode)) - clear_bit(oldkeycode, dev->keybit); - - return 0; -} - -static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) -{ - struct input_dev *hotk_input_dev = pcc->input_dev; - int rc; - int key_code, hkey_num; - unsigned long long result; - - ACPI_FUNCTION_TRACE("acpi_pcc_generate_keyinput"); - - rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, - NULL, &result); - if (!ACPI_SUCCESS(rc)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "error getting hotkey status\n")); - return; - } - - acpi_bus_generate_proc_event(pcc->device, HKEY_NOTIFY, result); - - hkey_num = result & 0xf; - - if (hkey_num < 0 || hkey_num > ARRAY_SIZE(pcc->keymap)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "hotkey number out of range: %d\n", - hkey_num)); - return; - } - - key_code = pcc->keymap[hkey_num]; - - if (key_code != KEY_RESERVED) { - int pushed = (result & 0x80) ? TRUE : FALSE; - - input_report_key(hotk_input_dev, key_code, pushed); - input_sync(hotk_input_dev); - } - - return; -} - -static void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data) -{ - struct pcc_acpi *pcc = (struct pcc_acpi *) data; - - ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_notify"); - - switch (event) { - case HKEY_NOTIFY: - acpi_pcc_generate_keyinput(pcc); - break; - default: - /* nothing to do */ - break; - } -} - -static int acpi_pcc_init_input(struct pcc_acpi *pcc) -{ - int i, rc; - - ACPI_FUNCTION_TRACE("acpi_pcc_init_input"); - - pcc->input_dev = input_allocate_device(); - if (!pcc->input_dev) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Couldn't allocate input device for hotkey")); - return -ENOMEM; - } - - pcc->input_dev->evbit[0] = BIT(EV_KEY); - - pcc->input_dev->name = ACPI_PCC_DRIVER_NAME; - pcc->input_dev->phys = ACPI_PCC_INPUT_PHYS; - pcc->input_dev->id.bustype = BUS_HOST; - pcc->input_dev->id.vendor = 0x0001; - pcc->input_dev->id.product = 0x0001; - pcc->input_dev->id.version = 0x0100; - pcc->input_dev->getkeycode = pcc_getkeycode; - pcc->input_dev->setkeycode = pcc_setkeycode; - - /* load initial keymap */ - memcpy(pcc->keymap, initial_keymap, sizeof(pcc->keymap)); - - for (i = 0; i < ARRAY_SIZE(pcc->keymap); i++) - __set_bit(pcc->keymap[i], pcc->input_dev->keybit); - __clear_bit(KEY_RESERVED, pcc->input_dev->keybit); - - input_set_drvdata(pcc->input_dev, pcc); - - rc = input_register_device(pcc->input_dev); - if (rc < 0) - input_free_device(pcc->input_dev); - - return rc; -} - -/* kernel module interface */ - -static int acpi_pcc_hotkey_resume(struct acpi_device *device) -{ - struct pcc_acpi *pcc = acpi_driver_data(device); - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_resume"); - - if (device == NULL || pcc == NULL) - return -EINVAL; - - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Sticky mode restore: %d\n", - pcc->sticky_mode)); - - status = acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode); - - return status == AE_OK ? 0 : -EINVAL; -} - -static int acpi_pcc_hotkey_add(struct acpi_device *device) -{ - acpi_status status; - struct pcc_acpi *pcc; - int num_sifr, result; - - ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_add"); - - if (!device) - return -EINVAL; - - num_sifr = acpi_pcc_get_sqty(device); - - if (num_sifr > 255) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr too large")); - return -ENODEV; - } - - pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL); - if (!pcc) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Couldn't allocate mem for pcc")); - return -ENOMEM; - } - - pcc->sinf = kzalloc(sizeof(u32) * (num_sifr + 1), GFP_KERNEL); - if (!pcc->sinf) { - result = -ENOMEM; - goto out_hotkey; - } - - pcc->device = device; - pcc->handle = device->handle; - pcc->num_sifr = num_sifr; - device->driver_data = pcc; - strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME); - strcpy(acpi_device_class(device), ACPI_PCC_CLASS); - - result = acpi_pcc_init_input(pcc); - if (result) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error installing keyinput handler\n")); - goto out_sinf; - } - - /* initialize hotkey input device */ - status = acpi_install_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, - acpi_pcc_hotkey_notify, pcc); - - if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error installing notify handler\n")); - result = -ENODEV; - goto out_input; - } - - /* initialize backlight */ - pcc->backlight = backlight_device_register("panasonic", NULL, pcc, - &pcc_backlight_ops); - if (IS_ERR(pcc->backlight)) - goto out_notify; - - if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Couldn't retrieve BIOS data\n")); - goto out_backlight; - } - - /* read the initial brightness setting from the hardware */ - pcc->backlight->props.max_brightness = - pcc->sinf[SINF_AC_MAX_BRIGHT]; - pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; - - /* read the initial sticky key mode from the hardware */ - pcc->sticky_mode = pcc->sinf[SINF_STICKY_KEY]; - - /* add sysfs attributes */ - result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group); - if (result) - goto out_backlight; - - return 0; - -out_backlight: - backlight_device_unregister(pcc->backlight); -out_notify: - acpi_remove_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, - acpi_pcc_hotkey_notify); -out_input: - input_unregister_device(pcc->input_dev); - /* no need to input_free_device() since core input API refcount and - * free()s the device */ -out_sinf: - kfree(pcc->sinf); -out_hotkey: - kfree(pcc); - - return result; -} - -static int __init acpi_pcc_init(void) -{ - int result = 0; - - ACPI_FUNCTION_TRACE("acpi_pcc_init"); - - if (acpi_disabled) - return -ENODEV; - - result = acpi_bus_register_driver(&acpi_pcc_driver); - if (result < 0) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error registering hotkey driver\n")); - return -ENODEV; - } - - return 0; -} - -static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type) -{ - struct pcc_acpi *pcc = acpi_driver_data(device); - - ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_remove"); - - if (!device || !pcc) - return -EINVAL; - - sysfs_remove_group(&device->dev.kobj, &pcc_attr_group); - - backlight_device_unregister(pcc->backlight); - - acpi_remove_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, - acpi_pcc_hotkey_notify); - - input_unregister_device(pcc->input_dev); - /* no need to input_free_device() since core input API refcount and - * free()s the device */ - - kfree(pcc->sinf); - kfree(pcc); - - return 0; -} - -static void __exit acpi_pcc_exit(void) -{ - ACPI_FUNCTION_TRACE("acpi_pcc_exit"); - - acpi_bus_unregister_driver(&acpi_pcc_driver); -} - -module_init(acpi_pcc_init); -module_exit(acpi_pcc_exit); |
