diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 95ae1ffaf409..08c53768447b 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -114,6 +114,7 @@ MODULE_LICENSE("GPL"); #define HCI_KBD_ILLUMINATION 0x0095 #define SCI_ILLUMINATION 0x014e #define SCI_KBD_ILLUM_STATUS 0x015c +#define SCI_TOUCHPAD 0x050e /* field definitions */ #define HCI_HOTKEY_DISABLE 0x0b @@ -157,6 +158,7 @@ struct toshiba_acpi_dev { unsigned int tr_backlight_supported:1; unsigned int kbd_illum_supported:1; unsigned int kbd_led_registered:1; + unsigned int touchpad_supported:1; unsigned int sysfs_created:1; struct mutex mutex; @@ -527,6 +529,47 @@ static void toshiba_kbd_backlight_set(struct led_classdev *cdev, return; } } + +/* TouchPad support */ +static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state) +{ + u32 result; + acpi_status status; + + if (!sci_open(dev)) + return -EIO; + + status = sci_write(dev, SCI_TOUCHPAD, state, &result); + sci_close(dev); + if (ACPI_FAILURE(status)) { + pr_err("ACPI call to set the touchpad failed\n"); + return -EIO; + } else if (result == HCI_NOT_SUPPORTED) { + return -ENODEV; + } + + return 0; +} + +static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state) +{ + u32 result; + acpi_status status; + + if (!sci_open(dev)) + return -EIO; + + status = sci_read(dev, SCI_TOUCHPAD, state, &result); + sci_close(dev); + if (ACPI_FAILURE(status)) { + pr_err("ACPI call to query the touchpad failed\n"); + return -EIO; + } else if (result == HCI_NOT_SUPPORTED) { + return -ENODEV; + } + + return 0; +} /* Bluetooth rfkill handlers */ @@ -1130,15 +1173,48 @@ static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev, return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT); } + +static ssize_t toshiba_touchpad_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); + int state; + + /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */ + if (sscanf(buf, "%i", &state) == 1 && (state == 0 || state == 1)) { + if (toshiba_touchpad_set(toshiba, state) < 0) + return -EIO; + } + + return count; +} + +static ssize_t toshiba_touchpad_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); + u32 state; + int ret; + + ret = toshiba_touchpad_get(toshiba, &state); + if (ret < 0) + return ret; + + return sprintf(buf, "%i\n", state); +} static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR, toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store); static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR, toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store); +static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR, + toshiba_touchpad_show, toshiba_touchpad_store); static struct attribute *toshiba_attributes[] = { &dev_attr_kbd_backlight_mode.attr, &dev_attr_kbd_backlight_timeout.attr, + &dev_attr_touchpad.attr, NULL, }; @@ -1153,6 +1229,8 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, exists = (drv->kbd_illum_supported) ? true : false; else if (attr == &dev_attr_kbd_backlight_timeout.attr) exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false; + else if (attr == &dev_attr_touchpad.attr) + exists = (drv->touchpad_supported) ? true : false; return exists ? attr->mode : 0; } @@ -1496,6 +1574,9 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev) if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led)) dev->kbd_led_registered = 1; } + + ret = toshiba_touchpad_get(dev, &dummy); + dev->touchpad_supported = !ret; /* Determine whether or not BIOS supports fan and video interfaces */ |