mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 20:32:22 +00:00
ec57af9c2e
Properly return backlight registration error to parent. Mark struct backlight_ops as const. Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Acked-by: Harald Welte <laforge@gnumonks.org> (registration failure) Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
731 lines
19 KiB
C
731 lines
19 KiB
C
/*
|
|
* 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 void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event);
|
|
|
|
static const struct acpi_device_id pcc_device_ids[] = {
|
|
{ "MAT0012", 0},
|
|
{ "MAT0013", 0},
|
|
{ "MAT0018", 0},
|
|
{ "MAT0019", 0},
|
|
{ "", 0},
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, pcc_device_ids);
|
|
|
|
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,
|
|
.notify = acpi_pcc_hotkey_notify,
|
|
},
|
|
};
|
|
|
|
#define KEYMAP_SIZE 11
|
|
static const unsigned 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;
|
|
unsigned 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;
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL,
|
|
&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 const 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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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,
|
|
unsigned int scancode, unsigned 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, unsigned 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,
|
|
unsigned int scancode, unsigned int keycode)
|
|
{
|
|
struct pcc_acpi *pcc = input_get_drvdata(dev);
|
|
int oldkeycode;
|
|
|
|
if (scancode >= ARRAY_SIZE(pcc->keymap))
|
|
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;
|
|
|
|
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(struct acpi_device *device, u32 event)
|
|
{
|
|
struct pcc_acpi *pcc = acpi_driver_data(device);
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
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)
|
|
{
|
|
struct backlight_properties props;
|
|
struct pcc_acpi *pcc;
|
|
int num_sifr, result;
|
|
|
|
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_hotkey;
|
|
}
|
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Couldn't retrieve BIOS data\n"));
|
|
goto out_input;
|
|
}
|
|
/* initialize backlight */
|
|
memset(&props, 0, sizeof(struct backlight_properties));
|
|
props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT];
|
|
pcc->backlight = backlight_device_register("panasonic", NULL, pcc,
|
|
&pcc_backlight_ops, &props);
|
|
if (IS_ERR(pcc->backlight)) {
|
|
result = PTR_ERR(pcc->backlight);
|
|
goto out_sinf;
|
|
}
|
|
|
|
/* read the initial brightness setting from the hardware */
|
|
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_sinf:
|
|
kfree(pcc->sinf);
|
|
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_hotkey:
|
|
kfree(pcc);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int __init acpi_pcc_init(void)
|
|
{
|
|
int result = 0;
|
|
|
|
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);
|
|
|
|
if (!device || !pcc)
|
|
return -EINVAL;
|
|
|
|
sysfs_remove_group(&device->dev.kobj, &pcc_attr_group);
|
|
|
|
backlight_device_unregister(pcc->backlight);
|
|
|
|
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_bus_unregister_driver(&acpi_pcc_driver);
|
|
}
|
|
|
|
module_init(acpi_pcc_init);
|
|
module_exit(acpi_pcc_exit);
|