diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 9620285cb9a..7b5a56d59ba 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -164,6 +164,9 @@ static int __sony_nc_gfx_switch_status_get(void); 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_fanspeed_setup(struct platform_device *pd); +static void sony_nc_fanspeed_cleanup(struct platform_device *pd); + static int sony_nc_usb_charge_setup(struct platform_device *pd); static void sony_nc_usb_charge_cleanup(struct platform_device *pd); @@ -1391,6 +1394,12 @@ static void sony_nc_function_setup(struct acpi_device *device, pr_err("couldn't set up keyboard backlight function (%d)\n", result); break; + case 0x0149: + result = sony_nc_fanspeed_setup(pf_device); + if (result) + pr_err("couldn't set up fan speed function (%d)\n", + result); + break; case 0x0155: result = sony_nc_usb_charge_setup(pf_device); if (result) @@ -1467,6 +1476,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd) case 0x0163: sony_nc_kbd_backlight_cleanup(pd, handle); break; + case 0x0149: + sony_nc_fanspeed_cleanup(pd); + break; case 0x0155: sony_nc_usb_charge_cleanup(pd); break; @@ -2564,6 +2576,113 @@ static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd) } } +/* fan speed function */ +static struct device_attribute *fan_handle, *hsf_handle; + +static ssize_t sony_nc_hsfan_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; + + if (sony_call_snc_handle(0x0149, value << 0x10 | 0x0200, &result)) + return -EIO; + + return count; +} + +static ssize_t sony_nc_hsfan_show(struct device *dev, + struct device_attribute *attr, char *buffer) +{ + unsigned int result; + + if (sony_call_snc_handle(0x0149, 0x0100, &result)) + return -EIO; + + return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01); +} + +static ssize_t sony_nc_fanspeed_show(struct device *dev, + struct device_attribute *attr, char *buffer) +{ + unsigned int result; + + if (sony_call_snc_handle(0x0149, 0x0300, &result)) + return -EIO; + + return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0xff); +} + +static int sony_nc_fanspeed_setup(struct platform_device *pd) +{ + unsigned int result; + + fan_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL); + if (!fan_handle) + return -ENOMEM; + + hsf_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL); + if (!hsf_handle) { + result = -ENOMEM; + goto out_hsf_handle_alloc; + } + + sysfs_attr_init(&fan_handle->attr); + fan_handle->attr.name = "fanspeed"; + fan_handle->attr.mode = S_IRUGO; + fan_handle->show = sony_nc_fanspeed_show; + fan_handle->store = NULL; + + sysfs_attr_init(&hsf_handle->attr); + hsf_handle->attr.name = "fan_forced"; + hsf_handle->attr.mode = S_IRUGO | S_IWUSR; + hsf_handle->show = sony_nc_hsfan_show; + hsf_handle->store = sony_nc_hsfan_store; + + result = device_create_file(&pd->dev, fan_handle); + if (result) + goto out_fan_handle; + + result = device_create_file(&pd->dev, hsf_handle); + if (result) + goto out_hsf_handle; + + return 0; + +out_hsf_handle: + device_remove_file(&pd->dev, fan_handle); + +out_fan_handle: + kfree(hsf_handle); + hsf_handle = NULL; + +out_hsf_handle_alloc: + kfree(fan_handle); + fan_handle = NULL; + return result; +} + +static void sony_nc_fanspeed_cleanup(struct platform_device *pd) +{ + if (fan_handle) { + device_remove_file(&pd->dev, fan_handle); + kfree(fan_handle); + fan_handle = NULL; + } + if (hsf_handle) { + device_remove_file(&pd->dev, hsf_handle); + kfree(hsf_handle); + hsf_handle = NULL; + } +} + /* USB charge function */ static struct device_attribute *uc_handle; |