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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
Len Brown
parent
3d2b8a9f2c
commit
7b153f3668
@ -121,4 +121,10 @@ config SONY_LAPTOP
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Read <file:Documentation/sony-laptop.txt> for more information.
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config SONY_LAPTOP_OLD
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bool "Sonypi compatibility"
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depends on SONY_LAPTOP
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---help---
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Build the sonypi driver compatibility code into the sony-laptop driver.
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endmenu
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@ -62,6 +62,10 @@
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#include <acpi/acpi_bus.h>
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#include <asm/uaccess.h>
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#include <linux/sonypi.h>
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#ifdef CONFIG_SONY_LAPTOP_OLD
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#include <linux/poll.h>
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#include <linux/miscdevice.h>
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#endif
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#define DRV_PFX "sony-laptop: "
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#define dprintk(msg...) do { \
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@ -96,13 +100,21 @@ MODULE_PARM_DESC(no_spic,
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static int compat; /* = 0 */
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module_param(compat, int, 0444);
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MODULE_PARM_DESC(compat,
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"set this if you want to enable backward compatibility mode for SPIC");
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"set this if you want to enable backward compatibility mode");
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static unsigned long mask = 0xffffffff;
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module_param(mask, ulong, 0644);
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MODULE_PARM_DESC(mask,
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"set this to the mask of event you want to enable (see doc)");
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#ifdef CONFIG_SONY_LAPTOP_OLD
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static int minor = -1;
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module_param(minor, int, 0);
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MODULE_PARM_DESC(minor,
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"minor number of the misc device for the SPIC compatibility code, "
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"default is -1 (automatic)");
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#endif
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/*********** Input Devices ***********/
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#define SONY_LAPTOP_BUF_SIZE 128
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@ -1318,6 +1330,16 @@ static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
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/* fan speed */
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/* FAN0 information (reverse engineered from ACPI tables) */
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#define SONY_PIC_FAN0_STATUS 0x93
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static int sony_pic_set_fanspeed(unsigned long value)
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{
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return ec_write(SONY_PIC_FAN0_STATUS, value);
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}
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static int sony_pic_get_fanspeed(u8 *value)
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{
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return ec_read(SONY_PIC_FAN0_STATUS, value);
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}
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static ssize_t sony_pic_fanspeed_store(struct device *dev,
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struct device_attribute *attr,
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const char *buffer, size_t count)
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@ -1327,7 +1349,7 @@ static ssize_t sony_pic_fanspeed_store(struct device *dev,
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return -EINVAL;
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value = simple_strtoul(buffer, NULL, 10);
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if (ec_write(SONY_PIC_FAN0_STATUS, value))
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if (sony_pic_set_fanspeed(value))
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return -EIO;
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return count;
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@ -1337,7 +1359,7 @@ static ssize_t sony_pic_fanspeed_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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u8 value = 0;
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if (ec_read(SONY_PIC_FAN0_STATUS, &value))
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if (sony_pic_get_fanspeed(&value))
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return -EIO;
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return snprintf(buffer, PAGE_SIZE, "%d\n", value);
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@ -1363,6 +1385,304 @@ static struct attribute_group spic_attribute_group = {
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.attrs = spic_attributes
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};
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/******** SONYPI compatibility **********/
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#ifdef CONFIG_SONY_LAPTOP_OLD
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/* battery / brightness / temperature addresses */
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#define SONYPI_BAT_FLAGS 0x81
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#define SONYPI_LCD_LIGHT 0x96
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#define SONYPI_BAT1_PCTRM 0xa0
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#define SONYPI_BAT1_LEFT 0xa2
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#define SONYPI_BAT1_MAXRT 0xa4
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#define SONYPI_BAT2_PCTRM 0xa8
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#define SONYPI_BAT2_LEFT 0xaa
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#define SONYPI_BAT2_MAXRT 0xac
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#define SONYPI_BAT1_MAXTK 0xb0
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#define SONYPI_BAT1_FULL 0xb2
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#define SONYPI_BAT2_MAXTK 0xb8
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#define SONYPI_BAT2_FULL 0xba
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#define SONYPI_TEMP_STATUS 0xC1
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struct sonypi_compat_s {
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struct fasync_struct *fifo_async;
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struct kfifo *fifo;
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spinlock_t fifo_lock;
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wait_queue_head_t fifo_proc_list;
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atomic_t open_count;
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};
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static struct sonypi_compat_s sonypi_compat = {
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.open_count = ATOMIC_INIT(0),
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};
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static int sonypi_misc_fasync(int fd, struct file *filp, int on)
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{
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int retval;
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retval = fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
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if (retval < 0)
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return retval;
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return 0;
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}
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static int sonypi_misc_release(struct inode *inode, struct file *file)
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{
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sonypi_misc_fasync(-1, file, 0);
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atomic_dec(&sonypi_compat.open_count);
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return 0;
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}
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static int sonypi_misc_open(struct inode *inode, struct file *file)
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{
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/* Flush input queue on first open */
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if (atomic_inc_return(&sonypi_compat.open_count) == 1)
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kfifo_reset(sonypi_compat.fifo);
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return 0;
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}
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static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
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size_t count, loff_t *pos)
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{
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ssize_t ret;
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unsigned char c;
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if ((kfifo_len(sonypi_compat.fifo) == 0) &&
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(file->f_flags & O_NONBLOCK))
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return -EAGAIN;
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ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
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kfifo_len(sonypi_compat.fifo) != 0);
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if (ret)
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return ret;
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while (ret < count &&
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(kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
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if (put_user(c, buf++))
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return -EFAULT;
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ret++;
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}
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if (ret > 0) {
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struct inode *inode = file->f_path.dentry->d_inode;
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inode->i_atime = current_fs_time(inode->i_sb);
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}
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return ret;
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}
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static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
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{
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poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
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if (kfifo_len(sonypi_compat.fifo))
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return POLLIN | POLLRDNORM;
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return 0;
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}
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static int ec_read16(u8 addr, u16 *value)
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{
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u8 val_lb, val_hb;
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if (ec_read(addr, &val_lb))
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return -1;
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if (ec_read(addr + 1, &val_hb))
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return -1;
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*value = val_lb | (val_hb << 8);
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return 0;
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}
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static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
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unsigned int cmd, unsigned long arg)
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{
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int ret = 0;
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void __user *argp = (void __user *)arg;
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u8 val8;
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u16 val16;
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int value;
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/*down(&sonypi_device.lock);*/
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switch (cmd) {
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case SONYPI_IOCGBRT:
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if (sony_backlight_device == NULL) {
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ret = -EIO;
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break;
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}
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if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value)) {
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ret = -EIO;
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break;
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}
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val8 = ((value & 0xff) - 1) << 5;
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if (copy_to_user(argp, &val8, sizeof(val8)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCSBRT:
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if (sony_backlight_device == NULL) {
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ret = -EIO;
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break;
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}
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if (copy_from_user(&val8, argp, sizeof(val8))) {
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ret = -EFAULT;
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break;
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}
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if (acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
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(val8 >> 5) + 1, NULL)) {
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ret = -EIO;
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break;
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}
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/* sync the backlight device status */
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sony_backlight_device->props.brightness =
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sony_backlight_get_brightness(sony_backlight_device);
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break;
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case SONYPI_IOCGBAT1CAP:
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if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
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ret = -EIO;
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break;
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}
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if (copy_to_user(argp, &val16, sizeof(val16)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCGBAT1REM:
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if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
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ret = -EIO;
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break;
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}
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if (copy_to_user(argp, &val16, sizeof(val16)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCGBAT2CAP:
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if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
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ret = -EIO;
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break;
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}
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if (copy_to_user(argp, &val16, sizeof(val16)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCGBAT2REM:
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if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
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ret = -EIO;
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break;
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}
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if (copy_to_user(argp, &val16, sizeof(val16)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCGBATFLAGS:
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if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
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ret = -EIO;
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break;
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}
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val8 &= 0x07;
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if (copy_to_user(argp, &val8, sizeof(val8)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCGBLUE:
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val8 = spic_dev.bluetooth_power;
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if (copy_to_user(argp, &val8, sizeof(val8)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCSBLUE:
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if (copy_from_user(&val8, argp, sizeof(val8))) {
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ret = -EFAULT;
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break;
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}
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sony_pic_set_bluetoothpower(val8);
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break;
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/* FAN Controls */
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case SONYPI_IOCGFAN:
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if (sony_pic_get_fanspeed(&val8)) {
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ret = -EIO;
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break;
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}
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if (copy_to_user(argp, &val8, sizeof(val8)))
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ret = -EFAULT;
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break;
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case SONYPI_IOCSFAN:
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if (copy_from_user(&val8, argp, sizeof(val8))) {
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ret = -EFAULT;
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break;
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}
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if (sony_pic_set_fanspeed(val8))
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ret = -EIO;
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break;
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/* GET Temperature (useful under APM) */
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case SONYPI_IOCGTEMP:
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if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
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ret = -EIO;
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break;
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}
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if (copy_to_user(argp, &val8, sizeof(val8)))
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ret = -EFAULT;
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break;
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default:
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ret = -EINVAL;
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}
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/*up(&sonypi_device.lock);*/
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return ret;
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}
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static const struct file_operations sonypi_misc_fops = {
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.owner = THIS_MODULE,
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.read = sonypi_misc_read,
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.poll = sonypi_misc_poll,
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.open = sonypi_misc_open,
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.release = sonypi_misc_release,
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.fasync = sonypi_misc_fasync,
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.ioctl = sonypi_misc_ioctl,
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};
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static struct miscdevice sonypi_misc_device = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "sonypi",
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.fops = &sonypi_misc_fops,
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};
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static void sonypi_compat_report_event(u8 event)
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{
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kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
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kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
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wake_up_interruptible(&sonypi_compat.fifo_proc_list);
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}
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static int sonypi_compat_init(void)
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{
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int error;
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spin_lock_init(&sonypi_compat.fifo_lock);
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sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
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&sonypi_compat.fifo_lock);
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if (IS_ERR(sonypi_compat.fifo)) {
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printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
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return PTR_ERR(sonypi_compat.fifo);
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}
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init_waitqueue_head(&sonypi_compat.fifo_proc_list);
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/*init_MUTEX(&sonypi_device.lock);*/
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if (minor != -1)
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sonypi_misc_device.minor = minor;
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error = misc_register(&sonypi_misc_device);
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if (error) {
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printk(KERN_ERR DRV_PFX "misc_register failed\n");
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goto err_free_kfifo;
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}
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if (minor == -1)
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printk(KERN_INFO "sonypi: device allocated minor is %d\n",
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sonypi_misc_device.minor);
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return 0;
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err_free_kfifo:
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kfifo_free(sonypi_compat.fifo);
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return error;
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}
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static void sonypi_compat_exit(void)
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{
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misc_deregister(&sonypi_misc_device);
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kfifo_free(sonypi_compat.fifo);
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}
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#else
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static int sonypi_compat_init(void) { return 0; }
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static void sonypi_compat_exit(void) { }
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static void sonypi_compat_report_event(u8 event) { }
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#endif /* CONFIG_SONY_LAPTOP_OLD */
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/*
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* ACPI callbacks
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*/
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@ -1604,6 +1924,7 @@ static irqreturn_t sony_pic_irq(int irq, void *dev_id)
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found:
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sony_laptop_report_input_event(device_event);
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acpi_bus_generate_event(spic_dev.acpi_dev, 1, device_event);
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sonypi_compat_report_event(device_event);
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return IRQ_HANDLED;
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}
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@ -1618,6 +1939,8 @@ static int sony_pic_remove(struct acpi_device *device, int type)
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struct sony_pic_ioport *io, *tmp_io;
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struct sony_pic_irq *irq, *tmp_irq;
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sonypi_compat_exit();
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if (sony_pic_disable(device)) {
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printk(KERN_ERR DRV_PFX "Couldn't disable device.\n");
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return -ENXIO;
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@ -1731,6 +2054,9 @@ static int sony_pic_add(struct acpi_device *device)
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if (result)
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goto err_remove_pf;
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if (sonypi_compat_init())
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goto err_remove_pf;
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return 0;
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err_remove_pf:
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