linux/drivers/platform/x86/toshiba_acpi.c
Dmitry Torokhov 384a7cd9ac toshiba-acpi - switch to using sparse keymap
Instead of implementing its own version of keymap hanlding switch over
to using sparse keymap library.

Also, install notify handler only after we allocated input device,
otherwise we may risk getting event too early and crash. Similarly,
notify handler should be removed before we unregister input device.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-10-21 09:36:43 -04:00

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/*
* toshiba_acpi.c - Toshiba Laptop ACPI Extras
*
*
* Copyright (C) 2002-2004 John Belmonte
* Copyright (C) 2008 Philip Langdale
* Copyright (C) 2010 Pierre Ducroquet
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*
*
* The devolpment page for this driver is located at
* http://memebeam.org/toys/ToshibaAcpiDriver.
*
* Credits:
* Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
* engineering the Windows drivers
* Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
* Rob Miller - TV out and hotkeys help
*
*
* TODO
*
*/
#define TOSHIBA_ACPI_VERSION "0.19"
#define PROC_INTERFACE_VERSION 1
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
#include <acpi/acpi_drivers.h>
MODULE_AUTHOR("John Belmonte");
MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
MODULE_LICENSE("GPL");
#define MY_LOGPREFIX "toshiba_acpi: "
#define MY_ERR KERN_ERR MY_LOGPREFIX
#define MY_NOTICE KERN_NOTICE MY_LOGPREFIX
#define MY_INFO KERN_INFO MY_LOGPREFIX
/* Toshiba ACPI method paths */
#define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM"
#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
*
* HCI is Toshiba's "Hardware Control Interface" which is supposed to
* be uniform across all their models. Ideally we would just call
* dedicated ACPI methods instead of using this primitive interface.
* However the ACPI methods seem to be incomplete in some areas (for
* example they allow setting, but not reading, the LCD brightness value),
* so this is still useful.
*/
#define HCI_WORDS 6
/* operations */
#define HCI_SET 0xff00
#define HCI_GET 0xfe00
/* return codes */
#define HCI_SUCCESS 0x0000
#define HCI_FAILURE 0x1000
#define HCI_NOT_SUPPORTED 0x8000
#define HCI_EMPTY 0x8c00
/* registers */
#define HCI_FAN 0x0004
#define HCI_SYSTEM_EVENT 0x0016
#define HCI_VIDEO_OUT 0x001c
#define HCI_HOTKEY_EVENT 0x001e
#define HCI_LCD_BRIGHTNESS 0x002a
#define HCI_WIRELESS 0x0056
/* field definitions */
#define HCI_LCD_BRIGHTNESS_BITS 3
#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
#define HCI_VIDEO_OUT_LCD 0x1
#define HCI_VIDEO_OUT_CRT 0x2
#define HCI_VIDEO_OUT_TV 0x4
#define HCI_WIRELESS_KILL_SWITCH 0x01
#define HCI_WIRELESS_BT_PRESENT 0x0f
#define HCI_WIRELESS_BT_ATTACH 0x40
#define HCI_WIRELESS_BT_POWER 0x80
static const struct acpi_device_id toshiba_device_ids[] = {
{"TOS6200", 0},
{"TOS6208", 0},
{"TOS1900", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
static const struct key_entry toshiba_acpi_keymap[] __initconst = {
{ KE_KEY, 0x101, { KEY_MUTE } },
{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
{ KE_KEY, 0x103, { KEY_ZOOMIN } },
{ 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 },
};
/* utility
*/
static __inline__ void _set_bit(u32 * word, u32 mask, int value)
{
*word = (*word & ~mask) | (mask * value);
}
/* acpi interface wrappers
*/
static int is_valid_acpi_path(const char *methodName)
{
acpi_handle handle;
acpi_status status;
status = acpi_get_handle(NULL, (char *)methodName, &handle);
return !ACPI_FAILURE(status);
}
static int write_acpi_int(const char *methodName, int val)
{
struct acpi_object_list params;
union acpi_object in_objs[1];
acpi_status status;
params.count = ARRAY_SIZE(in_objs);
params.pointer = in_objs;
in_objs[0].type = ACPI_TYPE_INTEGER;
in_objs[0].integer.value = val;
status = acpi_evaluate_object(NULL, (char *)methodName, &params, NULL);
return (status == AE_OK);
}
#if 0
static int read_acpi_int(const char *methodName, int *pVal)
{
struct acpi_buffer results;
union acpi_object out_objs[1];
acpi_status status;
results.length = sizeof(out_objs);
results.pointer = out_objs;
status = acpi_evaluate_object(0, (char *)methodName, 0, &results);
*pVal = out_objs[0].integer.value;
return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER);
}
#endif
static const char *method_hci /*= 0*/ ;
/* Perform a raw HCI call. Here we don't care about input or output buffer
* format.
*/
static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
{
struct acpi_object_list params;
union acpi_object in_objs[HCI_WORDS];
struct acpi_buffer results;
union acpi_object out_objs[HCI_WORDS + 1];
acpi_status status;
int i;
params.count = HCI_WORDS;
params.pointer = in_objs;
for (i = 0; i < HCI_WORDS; ++i) {
in_objs[i].type = ACPI_TYPE_INTEGER;
in_objs[i].integer.value = in[i];
}
results.length = sizeof(out_objs);
results.pointer = out_objs;
status = acpi_evaluate_object(NULL, (char *)method_hci, &params,
&results);
if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
for (i = 0; i < out_objs->package.count; ++i) {
out[i] = out_objs->package.elements[i].integer.value;
}
}
return status;
}
/* common hci tasks (get or set one or two value)
*
* In addition to the ACPI status, the HCI system returns a result which
* may be useful (such as "not supported").
*/
static acpi_status hci_write1(u32 reg, u32 in1, u32 * result)
{
u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(in, out);
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result)
{
u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(in, out);
*out1 = out[2];
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(in, out);
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(in, out);
*out1 = out[2];
*out2 = out[3];
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
struct toshiba_acpi_dev {
struct platform_device *p_dev;
struct rfkill *bt_rfk;
struct input_dev *hotkey_dev;
int illumination_installed;
acpi_handle handle;
const char *bt_name;
struct mutex mutex;
};
/* Illumination support */
static int toshiba_illumination_available(void)
{
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
in[0] = 0xf100;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "Illumination device not available\n");
return 0;
}
in[0] = 0xf400;
status = hci_raw(in, out);
return 1;
}
static void toshiba_illumination_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
/* First request : initialize communication. */
in[0] = 0xf100;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "Illumination device not available\n");
return;
}
if (brightness) {
/* Switch the illumination on */
in[0] = 0xf400;
in[1] = 0x14e;
in[2] = 1;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "ACPI call for illumination failed.\n");
return;
}
} else {
/* Switch the illumination off */
in[0] = 0xf400;
in[1] = 0x14e;
in[2] = 0;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "ACPI call for illumination failed.\n");
return;
}
}
/* Last request : close communication. */
in[0] = 0xf200;
in[1] = 0;
in[2] = 0;
hci_raw(in, out);
}
static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
{
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
enum led_brightness result;
/* First request : initialize communication. */
in[0] = 0xf100;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "Illumination device not available\n");
return LED_OFF;
}
/* Check the illumination */
in[0] = 0xf300;
in[1] = 0x14e;
status = hci_raw(in, out);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "ACPI call for illumination failed.\n");
return LED_OFF;
}
result = out[2] ? LED_FULL : LED_OFF;
/* Last request : close communication. */
in[0] = 0xf200;
in[1] = 0;
in[2] = 0;
hci_raw(in, out);
return result;
}
static struct led_classdev toshiba_led = {
.name = "toshiba::illumination",
.max_brightness = 1,
.brightness_set = toshiba_illumination_set,
.brightness_get = toshiba_illumination_get,
};
static struct toshiba_acpi_dev toshiba_acpi = {
.bt_name = "Toshiba Bluetooth",
};
/* Bluetooth rfkill handlers */
static u32 hci_get_bt_present(bool *present)
{
u32 hci_result;
u32 value, value2;
value = 0;
value2 = 0;
hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
if (hci_result == HCI_SUCCESS)
*present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
return hci_result;
}
static u32 hci_get_radio_state(bool *radio_state)
{
u32 hci_result;
u32 value, value2;
value = 0;
value2 = 0x0001;
hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
*radio_state = value & HCI_WIRELESS_KILL_SWITCH;
return hci_result;
}
static int bt_rfkill_set_block(void *data, bool blocked)
{
struct toshiba_acpi_dev *dev = data;
u32 result1, result2;
u32 value;
int err;
bool radio_state;
value = (blocked == false);
mutex_lock(&dev->mutex);
if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) {
err = -EBUSY;
goto out;
}
if (!radio_state) {
err = 0;
goto out;
}
hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
err = -EBUSY;
else
err = 0;
out:
mutex_unlock(&dev->mutex);
return err;
}
static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
{
bool new_rfk_state;
bool value;
u32 hci_result;
struct toshiba_acpi_dev *dev = data;
mutex_lock(&dev->mutex);
hci_result = hci_get_radio_state(&value);
if (hci_result != HCI_SUCCESS) {
/* Can't do anything useful */
mutex_unlock(&dev->mutex);
return;
}
new_rfk_state = value;
mutex_unlock(&dev->mutex);
if (rfkill_set_hw_state(rfkill, !new_rfk_state))
bt_rfkill_set_block(data, true);
}
static const struct rfkill_ops toshiba_rfk_ops = {
.set_block = bt_rfkill_set_block,
.poll = bt_rfkill_poll,
};
static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
static struct backlight_device *toshiba_backlight_device;
static int force_fan;
static int last_key_event;
static int key_event_valid;
static int get_lcd(struct backlight_device *bd)
{
u32 hci_result;
u32 value;
hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
} else
return -EFAULT;
}
static int lcd_proc_show(struct seq_file *m, void *v)
{
int value = get_lcd(NULL);
if (value >= 0) {
seq_printf(m, "brightness: %d\n", value);
seq_printf(m, "brightness_levels: %d\n",
HCI_LCD_BRIGHTNESS_LEVELS);
} else {
printk(MY_ERR "Error reading LCD brightness\n");
}
return 0;
}
static int lcd_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, lcd_proc_show, NULL);
}
static int set_lcd(int value)
{
u32 hci_result;
value = value << HCI_LCD_BRIGHTNESS_SHIFT;
hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result);
if (hci_result != HCI_SUCCESS)
return -EFAULT;
return 0;
}
static int set_lcd_status(struct backlight_device *bd)
{
return set_lcd(bd->props.brightness);
}
static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
char cmd[42];
size_t len;
int value;
int ret;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " brightness : %i", &value) == 1 &&
value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
ret = set_lcd(value);
if (ret == 0)
ret = count;
} else {
ret = -EINVAL;
}
return ret;
}
static const struct file_operations lcd_proc_fops = {
.owner = THIS_MODULE,
.open = lcd_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = lcd_proc_write,
};
static int video_proc_show(struct seq_file *m, void *v)
{
u32 hci_result;
u32 value;
hci_read1(HCI_VIDEO_OUT, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
seq_printf(m, "lcd_out: %d\n", is_lcd);
seq_printf(m, "crt_out: %d\n", is_crt);
seq_printf(m, "tv_out: %d\n", is_tv);
} else {
printk(MY_ERR "Error reading video out status\n");
}
return 0;
}
static int video_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, video_proc_show, NULL);
}
static ssize_t video_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
char *cmd, *buffer;
int value;
int remain = count;
int lcd_out = -1;
int crt_out = -1;
int tv_out = -1;
u32 hci_result;
u32 video_out;
cmd = kmalloc(count + 1, GFP_KERNEL);
if (!cmd)
return -ENOMEM;
if (copy_from_user(cmd, buf, count)) {
kfree(cmd);
return -EFAULT;
}
cmd[count] = '\0';
buffer = cmd;
/* scan expression. Multiple expressions may be delimited with ;
*
* NOTE: to keep scanning simple, invalid fields are ignored
*/
while (remain) {
if (sscanf(buffer, " lcd_out : %i", &value) == 1)
lcd_out = value & 1;
else if (sscanf(buffer, " crt_out : %i", &value) == 1)
crt_out = value & 1;
else if (sscanf(buffer, " tv_out : %i", &value) == 1)
tv_out = value & 1;
/* advance to one character past the next ; */
do {
++buffer;
--remain;
}
while (remain && *(buffer - 1) != ';');
}
kfree(cmd);
hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result);
if (hci_result == HCI_SUCCESS) {
unsigned int new_video_out = video_out;
if (lcd_out != -1)
_set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
if (crt_out != -1)
_set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
if (tv_out != -1)
_set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
/* To avoid unnecessary video disruption, only write the new
* video setting if something changed. */
if (new_video_out != video_out)
write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
} else {
return -EFAULT;
}
return count;
}
static const struct file_operations video_proc_fops = {
.owner = THIS_MODULE,
.open = video_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = video_proc_write,
};
static int fan_proc_show(struct seq_file *m, void *v)
{
u32 hci_result;
u32 value;
hci_read1(HCI_FAN, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
seq_printf(m, "running: %d\n", (value > 0));
seq_printf(m, "force_on: %d\n", force_fan);
} else {
printk(MY_ERR "Error reading fan status\n");
}
return 0;
}
static int fan_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, fan_proc_show, NULL);
}
static ssize_t fan_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
char cmd[42];
size_t len;
int value;
u32 hci_result;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " force_on : %i", &value) == 1 &&
value >= 0 && value <= 1) {
hci_write1(HCI_FAN, value, &hci_result);
if (hci_result != HCI_SUCCESS)
return -EFAULT;
else
force_fan = value;
} else {
return -EINVAL;
}
return count;
}
static const struct file_operations fan_proc_fops = {
.owner = THIS_MODULE,
.open = fan_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = fan_proc_write,
};
static int keys_proc_show(struct seq_file *m, void *v)
{
u32 hci_result;
u32 value;
if (!key_event_valid) {
hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
key_event_valid = 1;
last_key_event = value;
} else if (hci_result == HCI_EMPTY) {
/* better luck next time */
} 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");
} else {
printk(MY_ERR "Error reading hotkey status\n");
goto end;
}
}
seq_printf(m, "hotkey_ready: %d\n", key_event_valid);
seq_printf(m, "hotkey: 0x%04x\n", last_key_event);
end:
return 0;
}
static int keys_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, keys_proc_show, NULL);
}
static ssize_t keys_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
char cmd[42];
size_t len;
int value;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
key_event_valid = 0;
} else {
return -EINVAL;
}
return count;
}
static const struct file_operations keys_proc_fops = {
.owner = THIS_MODULE,
.open = keys_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = keys_proc_write,
};
static int version_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
return 0;
}
static int version_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, version_proc_show, PDE(inode)->data);
}
static const struct file_operations version_proc_fops = {
.owner = THIS_MODULE,
.open = version_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* proc and module init
*/
#define PROC_TOSHIBA "toshiba"
static void __init create_toshiba_proc_entries(void)
{
proc_create("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, &lcd_proc_fops);
proc_create("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, &video_proc_fops);
proc_create("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, &fan_proc_fops);
proc_create("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, &keys_proc_fops);
proc_create("version", S_IRUGO, toshiba_proc_dir, &version_proc_fops);
}
static void remove_toshiba_proc_entries(void)
{
remove_proc_entry("lcd", toshiba_proc_dir);
remove_proc_entry("video", toshiba_proc_dir);
remove_proc_entry("fan", toshiba_proc_dir);
remove_proc_entry("keys", toshiba_proc_dir);
remove_proc_entry("version", toshiba_proc_dir);
}
static struct backlight_ops toshiba_backlight_data = {
.get_brightness = get_lcd,
.update_status = set_lcd_status,
};
static void toshiba_acpi_notify(acpi_handle handle, u32 event, void *context)
{
u32 hci_result, value;
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;
if (!sparse_keymap_report_event(toshiba_acpi.hotkey_dev,
value, 1, true)) {
printk(MY_INFO "Unknown key %x\n",
value);
}
} 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 __init toshiba_acpi_setup_keyboard(char *device)
{
acpi_status status;
int error;
status = acpi_get_handle(NULL, device, &toshiba_acpi.handle);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "Unable to get notification device\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;
error = sparse_keymap_setup(toshiba_acpi.hotkey_dev,
toshiba_acpi_keymap, NULL);
if (error)
goto err_free_dev;
status = acpi_install_notify_handler(toshiba_acpi.handle,
ACPI_DEVICE_NOTIFY, toshiba_acpi_notify, NULL);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "Unable to install hotkey notification\n");
error = -ENODEV;
goto err_free_keymap;
}
status = acpi_evaluate_object(toshiba_acpi.handle, "ENAB", NULL, NULL);
if (ACPI_FAILURE(status)) {
printk(MY_INFO "Unable to enable hotkeys\n");
error = -ENODEV;
goto err_remove_notify;
}
error = input_register_device(toshiba_acpi.hotkey_dev);
if (error) {
printk(MY_INFO "Unable to register input device\n");
goto err_remove_notify;
}
return 0;
err_remove_notify:
acpi_remove_notify_handler(toshiba_acpi.handle,
ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
err_free_keymap:
sparse_keymap_free(toshiba_acpi.hotkey_dev);
err_free_dev:
input_free_device(toshiba_acpi.hotkey_dev);
toshiba_acpi.hotkey_dev = NULL;
return error;
}
static void toshiba_acpi_exit(void)
{
if (toshiba_acpi.hotkey_dev) {
acpi_remove_notify_handler(toshiba_acpi.handle,
ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
sparse_keymap_free(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);
}
if (toshiba_backlight_device)
backlight_device_unregister(toshiba_backlight_device);
remove_toshiba_proc_entries();
if (toshiba_proc_dir)
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
if (toshiba_acpi.illumination_installed)
led_classdev_unregister(&toshiba_led);
platform_device_unregister(toshiba_acpi.p_dev);
return;
}
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(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",
TOSHIBA_ACPI_VERSION);
printk(MY_INFO " HCI method: %s\n", method_hci);
mutex_init(&toshiba_acpi.mutex);
toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi",
-1, NULL, 0);
if (IS_ERR(toshiba_acpi.p_dev)) {
ret = PTR_ERR(toshiba_acpi.p_dev);
printk(MY_ERR "unable to register platform device\n");
toshiba_acpi.p_dev = NULL;
toshiba_acpi_exit();
return ret;
}
force_fan = 0;
key_event_valid = 0;
/* enable event fifo */
hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
if (!toshiba_proc_dir) {
toshiba_acpi_exit();
return -ENODEV;
} else {
create_toshiba_proc_entries();
}
props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
toshiba_backlight_device = backlight_device_register("toshiba",
&toshiba_acpi.p_dev->dev,
NULL,
&toshiba_backlight_data,
&props);
if (IS_ERR(toshiba_backlight_device)) {
ret = PTR_ERR(toshiba_backlight_device);
printk(KERN_ERR "Could not register toshiba backlight device\n");
toshiba_backlight_device = NULL;
toshiba_acpi_exit();
return ret;
}
/* Register rfkill switch for Bluetooth */
if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name,
&toshiba_acpi.p_dev->dev,
RFKILL_TYPE_BLUETOOTH,
&toshiba_rfk_ops,
&toshiba_acpi);
if (!toshiba_acpi.bt_rfk) {
printk(MY_ERR "unable to allocate rfkill device\n");
toshiba_acpi_exit();
return -ENOMEM;
}
ret = rfkill_register(toshiba_acpi.bt_rfk);
if (ret) {
printk(MY_ERR "unable to register rfkill device\n");
rfkill_destroy(toshiba_acpi.bt_rfk);
toshiba_acpi_exit();
return ret;
}
}
toshiba_acpi.illumination_installed = 0;
if (toshiba_illumination_available()) {
if (!led_classdev_register(&(toshiba_acpi.p_dev->dev),
&toshiba_led))
toshiba_acpi.illumination_installed = 1;
}
return 0;
}
module_init(toshiba_acpi_init);
module_exit(toshiba_acpi_exit);