static long acpi_thermal_rel_ioctl(struct file *f, unsigned int cmd,
unsigned long __arg)
{
int ret = 0;
unsigned long length = 0;
int count = 0;
char __user *arg = (void __user *)__arg;
struct trt *trts = NULL;
struct art *arts = NULL;
switch (cmd) {
case ACPI_THERMAL_GET_TRT_COUNT:
ret = acpi_parse_trt(acpi_thermal_rel_handle, &count,
&trts, false);
kfree(trts);
if (!ret)
return put_user(count, (unsigned long __user *)__arg);
return ret;
case ACPI_THERMAL_GET_TRT_LEN:
ret = acpi_parse_trt(acpi_thermal_rel_handle, &count,
&trts, false);
kfree(trts);
length = count * sizeof(union trt_object);
if (!ret)
return put_user(length, (unsigned long __user *)__arg);
return ret;
case ACPI_THERMAL_GET_TRT:
return fill_trt(arg);
case ACPI_THERMAL_GET_ART_COUNT:
ret = acpi_parse_art(acpi_thermal_rel_handle, &count,
&arts, false);
kfree(arts);
if (!ret)
return put_user(count, (unsigned long __user *)__arg);
return ret;
case ACPI_THERMAL_GET_ART_LEN:
ret = acpi_parse_art(acpi_thermal_rel_handle, &count,
&arts, false);
kfree(arts);
length = count * sizeof(union art_object);
if (!ret)
return put_user(length, (unsigned long __user *)__arg);
return ret;
case ACPI_THERMAL_GET_ART:
return fill_art(arg);
default:
return -ENOTTY;
}
}
static int fill_trt(char __user *ubuf)
{
int i;
int ret;
int count;
int trt_len;
struct trt *trts = NULL;
union trt_object *trt_user;
ret = acpi_parse_trt(acpi_thermal_rel_handle, &count, &trts, false);
if (ret)
goto free_trt;
trt_len = count * sizeof(union trt_object);
trt_user = kzalloc(trt_len, GFP_KERNEL);
if (!trt_user) {
ret = -ENOMEM;
goto free_trt;
}
/* now fill in user trt data */
for (i = 0; i < count; i++) {
/* userspace trt needs device name instead of acpi reference */
get_single_name(trts[i].source, trt_user[i].source_device);
get_single_name(trts[i].target, trt_user[i].target_device);
trt_user[i].sample_period = trts[i].sample_period;
trt_user[i].influence = trts[i].influence;
}
if (copy_to_user(ubuf, trt_user, trt_len))
ret = -EFAULT;
kfree(trt_user);
free_trt:
kfree(trts);
return ret;
}
static int int3400_thermal_probe(struct platform_device *pdev)
{
struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
struct int3400_thermal_priv *priv;
int result;
if (!adev)
return -ENODEV;
priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->adev = adev;
result = int3400_thermal_get_uuids(priv);
if (result)
goto free_priv;
result = acpi_parse_art(priv->adev->handle, &priv->art_count,
&priv->arts, true);
if (result)
dev_dbg(&pdev->dev, "_ART table parsing error\n");
result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
&priv->trts, true);
if (result)
dev_dbg(&pdev->dev, "_TRT table parsing error\n");
platform_set_drvdata(pdev, priv);
if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
}
priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
priv, &int3400_thermal_ops,
&int3400_thermal_params, 0, 0);
if (IS_ERR(priv->thermal)) {
result = PTR_ERR(priv->thermal);
goto free_art_trt;
}
priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
priv->adev->handle);
result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
if (result)
goto free_zone;
return 0;
free_zone:
thermal_zone_device_unregister(priv->thermal);
free_art_trt:
kfree(priv->trts);
kfree(priv->arts);
free_priv:
kfree(priv);
return result;
}