sony-laptop: sonypi backward compatibility code

Compatibility code to allow old sonypi bound userspace apps to still work.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
malattia@linux.it 2007-04-09 19:31:25 +02:00 committed by Len Brown
parent 3d2b8a9f2c
commit 7b153f3668
2 changed files with 335 additions and 3 deletions

View File

@ -121,4 +121,10 @@ config SONY_LAPTOP
Read <file:Documentation/sony-laptop.txt> for more information.
config SONY_LAPTOP_OLD
bool "Sonypi compatibility"
depends on SONY_LAPTOP
---help---
Build the sonypi driver compatibility code into the sony-laptop driver.
endmenu

View File

@ -62,6 +62,10 @@
#include <acpi/acpi_bus.h>
#include <asm/uaccess.h>
#include <linux/sonypi.h>
#ifdef CONFIG_SONY_LAPTOP_OLD
#include <linux/poll.h>
#include <linux/miscdevice.h>
#endif
#define DRV_PFX "sony-laptop: "
#define dprintk(msg...) do { \
@ -96,13 +100,21 @@ MODULE_PARM_DESC(no_spic,
static int compat; /* = 0 */
module_param(compat, int, 0444);
MODULE_PARM_DESC(compat,
"set this if you want to enable backward compatibility mode for SPIC");
"set this if you want to enable backward compatibility mode");
static unsigned long mask = 0xffffffff;
module_param(mask, ulong, 0644);
MODULE_PARM_DESC(mask,
"set this to the mask of event you want to enable (see doc)");
#ifdef CONFIG_SONY_LAPTOP_OLD
static int minor = -1;
module_param(minor, int, 0);
MODULE_PARM_DESC(minor,
"minor number of the misc device for the SPIC compatibility code, "
"default is -1 (automatic)");
#endif
/*********** Input Devices ***********/
#define SONY_LAPTOP_BUF_SIZE 128
@ -1318,6 +1330,16 @@ static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
/* fan speed */
/* FAN0 information (reverse engineered from ACPI tables) */
#define SONY_PIC_FAN0_STATUS 0x93
static int sony_pic_set_fanspeed(unsigned long value)
{
return ec_write(SONY_PIC_FAN0_STATUS, value);
}
static int sony_pic_get_fanspeed(u8 *value)
{
return ec_read(SONY_PIC_FAN0_STATUS, value);
}
static ssize_t sony_pic_fanspeed_store(struct device *dev,
struct device_attribute *attr,
const char *buffer, size_t count)
@ -1327,7 +1349,7 @@ static ssize_t sony_pic_fanspeed_store(struct device *dev,
return -EINVAL;
value = simple_strtoul(buffer, NULL, 10);
if (ec_write(SONY_PIC_FAN0_STATUS, value))
if (sony_pic_set_fanspeed(value))
return -EIO;
return count;
@ -1337,7 +1359,7 @@ static ssize_t sony_pic_fanspeed_show(struct device *dev,
struct device_attribute *attr, char *buffer)
{
u8 value = 0;
if (ec_read(SONY_PIC_FAN0_STATUS, &value))
if (sony_pic_get_fanspeed(&value))
return -EIO;
return snprintf(buffer, PAGE_SIZE, "%d\n", value);
@ -1363,6 +1385,304 @@ static struct attribute_group spic_attribute_group = {
.attrs = spic_attributes
};
/******** SONYPI compatibility **********/
#ifdef CONFIG_SONY_LAPTOP_OLD
/* battery / brightness / temperature addresses */
#define SONYPI_BAT_FLAGS 0x81
#define SONYPI_LCD_LIGHT 0x96
#define SONYPI_BAT1_PCTRM 0xa0
#define SONYPI_BAT1_LEFT 0xa2
#define SONYPI_BAT1_MAXRT 0xa4
#define SONYPI_BAT2_PCTRM 0xa8
#define SONYPI_BAT2_LEFT 0xaa
#define SONYPI_BAT2_MAXRT 0xac
#define SONYPI_BAT1_MAXTK 0xb0
#define SONYPI_BAT1_FULL 0xb2
#define SONYPI_BAT2_MAXTK 0xb8
#define SONYPI_BAT2_FULL 0xba
#define SONYPI_TEMP_STATUS 0xC1
struct sonypi_compat_s {
struct fasync_struct *fifo_async;
struct kfifo *fifo;
spinlock_t fifo_lock;
wait_queue_head_t fifo_proc_list;
atomic_t open_count;
};
static struct sonypi_compat_s sonypi_compat = {
.open_count = ATOMIC_INIT(0),
};
static int sonypi_misc_fasync(int fd, struct file *filp, int on)
{
int retval;
retval = fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
if (retval < 0)
return retval;
return 0;
}
static int sonypi_misc_release(struct inode *inode, struct file *file)
{
sonypi_misc_fasync(-1, file, 0);
atomic_dec(&sonypi_compat.open_count);
return 0;
}
static int sonypi_misc_open(struct inode *inode, struct file *file)
{
/* Flush input queue on first open */
if (atomic_inc_return(&sonypi_compat.open_count) == 1)
kfifo_reset(sonypi_compat.fifo);
return 0;
}
static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
size_t count, loff_t *pos)
{
ssize_t ret;
unsigned char c;
if ((kfifo_len(sonypi_compat.fifo) == 0) &&
(file->f_flags & O_NONBLOCK))
return -EAGAIN;
ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
kfifo_len(sonypi_compat.fifo) != 0);
if (ret)
return ret;
while (ret < count &&
(kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
if (put_user(c, buf++))
return -EFAULT;
ret++;
}
if (ret > 0) {
struct inode *inode = file->f_path.dentry->d_inode;
inode->i_atime = current_fs_time(inode->i_sb);
}
return ret;
}
static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
{
poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
if (kfifo_len(sonypi_compat.fifo))
return POLLIN | POLLRDNORM;
return 0;
}
static int ec_read16(u8 addr, u16 *value)
{
u8 val_lb, val_hb;
if (ec_read(addr, &val_lb))
return -1;
if (ec_read(addr + 1, &val_hb))
return -1;
*value = val_lb | (val_hb << 8);
return 0;
}
static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
unsigned int cmd, unsigned long arg)
{
int ret = 0;
void __user *argp = (void __user *)arg;
u8 val8;
u16 val16;
int value;
/*down(&sonypi_device.lock);*/
switch (cmd) {
case SONYPI_IOCGBRT:
if (sony_backlight_device == NULL) {
ret = -EIO;
break;
}
if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value)) {
ret = -EIO;
break;
}
val8 = ((value & 0xff) - 1) << 5;
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
case SONYPI_IOCSBRT:
if (sony_backlight_device == NULL) {
ret = -EIO;
break;
}
if (copy_from_user(&val8, argp, sizeof(val8))) {
ret = -EFAULT;
break;
}
if (acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
(val8 >> 5) + 1, NULL)) {
ret = -EIO;
break;
}
/* sync the backlight device status */
sony_backlight_device->props.brightness =
sony_backlight_get_brightness(sony_backlight_device);
break;
case SONYPI_IOCGBAT1CAP:
if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
ret = -EIO;
break;
}
if (copy_to_user(argp, &val16, sizeof(val16)))
ret = -EFAULT;
break;
case SONYPI_IOCGBAT1REM:
if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
ret = -EIO;
break;
}
if (copy_to_user(argp, &val16, sizeof(val16)))
ret = -EFAULT;
break;
case SONYPI_IOCGBAT2CAP:
if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
ret = -EIO;
break;
}
if (copy_to_user(argp, &val16, sizeof(val16)))
ret = -EFAULT;
break;
case SONYPI_IOCGBAT2REM:
if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
ret = -EIO;
break;
}
if (copy_to_user(argp, &val16, sizeof(val16)))
ret = -EFAULT;
break;
case SONYPI_IOCGBATFLAGS:
if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
ret = -EIO;
break;
}
val8 &= 0x07;
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
case SONYPI_IOCGBLUE:
val8 = spic_dev.bluetooth_power;
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
case SONYPI_IOCSBLUE:
if (copy_from_user(&val8, argp, sizeof(val8))) {
ret = -EFAULT;
break;
}
sony_pic_set_bluetoothpower(val8);
break;
/* FAN Controls */
case SONYPI_IOCGFAN:
if (sony_pic_get_fanspeed(&val8)) {
ret = -EIO;
break;
}
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
case SONYPI_IOCSFAN:
if (copy_from_user(&val8, argp, sizeof(val8))) {
ret = -EFAULT;
break;
}
if (sony_pic_set_fanspeed(val8))
ret = -EIO;
break;
/* GET Temperature (useful under APM) */
case SONYPI_IOCGTEMP:
if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
ret = -EIO;
break;
}
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
default:
ret = -EINVAL;
}
/*up(&sonypi_device.lock);*/
return ret;
}
static const struct file_operations sonypi_misc_fops = {
.owner = THIS_MODULE,
.read = sonypi_misc_read,
.poll = sonypi_misc_poll,
.open = sonypi_misc_open,
.release = sonypi_misc_release,
.fasync = sonypi_misc_fasync,
.ioctl = sonypi_misc_ioctl,
};
static struct miscdevice sonypi_misc_device = {
.minor = MISC_DYNAMIC_MINOR,
.name = "sonypi",
.fops = &sonypi_misc_fops,
};
static void sonypi_compat_report_event(u8 event)
{
kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
wake_up_interruptible(&sonypi_compat.fifo_proc_list);
}
static int sonypi_compat_init(void)
{
int error;
spin_lock_init(&sonypi_compat.fifo_lock);
sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
&sonypi_compat.fifo_lock);
if (IS_ERR(sonypi_compat.fifo)) {
printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
return PTR_ERR(sonypi_compat.fifo);
}
init_waitqueue_head(&sonypi_compat.fifo_proc_list);
/*init_MUTEX(&sonypi_device.lock);*/
if (minor != -1)
sonypi_misc_device.minor = minor;
error = misc_register(&sonypi_misc_device);
if (error) {
printk(KERN_ERR DRV_PFX "misc_register failed\n");
goto err_free_kfifo;
}
if (minor == -1)
printk(KERN_INFO "sonypi: device allocated minor is %d\n",
sonypi_misc_device.minor);
return 0;
err_free_kfifo:
kfifo_free(sonypi_compat.fifo);
return error;
}
static void sonypi_compat_exit(void)
{
misc_deregister(&sonypi_misc_device);
kfifo_free(sonypi_compat.fifo);
}
#else
static int sonypi_compat_init(void) { return 0; }
static void sonypi_compat_exit(void) { }
static void sonypi_compat_report_event(u8 event) { }
#endif /* CONFIG_SONY_LAPTOP_OLD */
/*
* ACPI callbacks
*/
@ -1604,6 +1924,7 @@ static irqreturn_t sony_pic_irq(int irq, void *dev_id)
found:
sony_laptop_report_input_event(device_event);
acpi_bus_generate_event(spic_dev.acpi_dev, 1, device_event);
sonypi_compat_report_event(device_event);
return IRQ_HANDLED;
}
@ -1618,6 +1939,8 @@ static int sony_pic_remove(struct acpi_device *device, int type)
struct sony_pic_ioport *io, *tmp_io;
struct sony_pic_irq *irq, *tmp_irq;
sonypi_compat_exit();
if (sony_pic_disable(device)) {
printk(KERN_ERR DRV_PFX "Couldn't disable device.\n");
return -ENXIO;
@ -1731,6 +2054,9 @@ static int sony_pic_add(struct acpi_device *device)
if (result)
goto err_remove_pf;
if (sonypi_compat_init())
goto err_remove_pf;
return 0;
err_remove_pf: