diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 5902bb5a9e78..210d4ae547c2 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -159,6 +159,10 @@ static void sony_nc_lid_resume_cleanup(struct platform_device *pd); static int sony_nc_highspeed_charging_setup(struct platform_device *pd); static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd); +static int sony_nc_touchpad_setup(struct platform_device *pd, + unsigned int handle); +static void sony_nc_touchpad_cleanup(struct platform_device *pd); + enum sony_nc_rfkill { SONY_WIFI, SONY_BLUETOOTH, @@ -1290,6 +1294,14 @@ static void sony_nc_function_setup(struct acpi_device *device, /* setup hotkeys */ sony_call_snc_handle(handle, 0x100, &result); break; + case 0x0105: + case 0x0148: + /* touchpad enable/disable */ + result = sony_nc_touchpad_setup(pf_device, handle); + if (result) + pr_err("couldn't set up touchpad control function (%d)\n", + result); + break; case 0x0115: case 0x0136: case 0x013f: @@ -1359,6 +1371,10 @@ static void sony_nc_function_cleanup(struct platform_device *pd) continue; switch (handle) { + case 0x0105: + case 0x0148: + sony_nc_touchpad_cleanup(pd); + break; case 0x0115: case 0x0136: case 0x013f: @@ -2376,6 +2392,81 @@ static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd) } } +/* Touchpad enable/disable */ +struct touchpad_control { + struct device_attribute attr; + int handle; +}; +static struct touchpad_control *tp_ctl; + +static ssize_t sony_nc_touchpad_store(struct device *dev, + struct device_attribute *attr, const char *buffer, size_t count) +{ + unsigned int result; + unsigned long value; + + if (count > 31) + return -EINVAL; + + if (kstrtoul(buffer, 10, &value) || value > 1) + return -EINVAL; + + /* sysfs: 0 disabled, 1 enabled + * EC: 0 enabled, 1 disabled + */ + if (sony_call_snc_handle(tp_ctl->handle, + (!value << 0x10) | 0x100, &result)) + return -EIO; + + return count; +} + +static ssize_t sony_nc_touchpad_show(struct device *dev, + struct device_attribute *attr, char *buffer) +{ + unsigned int result; + + if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result)) + return -EINVAL; + + return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01)); +} + +static int sony_nc_touchpad_setup(struct platform_device *pd, + unsigned int handle) +{ + int ret = 0; + + tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL); + if (!tp_ctl) + return -ENOMEM; + + tp_ctl->handle = handle; + + sysfs_attr_init(&tp_ctl->attr.attr); + tp_ctl->attr.attr.name = "touchpad"; + tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR; + tp_ctl->attr.show = sony_nc_touchpad_show; + tp_ctl->attr.store = sony_nc_touchpad_store; + + ret = device_create_file(&pd->dev, &tp_ctl->attr); + if (ret) { + kfree(tp_ctl); + tp_ctl = NULL; + } + + return ret; +} + +static void sony_nc_touchpad_cleanup(struct platform_device *pd) +{ + if (tp_ctl) { + device_remove_file(&pd->dev, &tp_ctl->attr); + kfree(tp_ctl); + tp_ctl = NULL; + } +} + static void sony_nc_backlight_ng_read_limits(int handle, struct sony_backlight_props *props) { |