Commit 23378249 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki

Merge branch 'device-properties' into acpi-init

parents 9ffecb10 3f4232ee
...@@ -26,6 +26,106 @@ ...@@ -26,6 +26,106 @@
#include "internal.h" #include "internal.h"
static ssize_t acpi_object_path(acpi_handle handle, char *buf)
{
struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
int result;
result = acpi_get_name(handle, ACPI_FULL_PATHNAME, &path);
if (result)
return result;
result = sprintf(buf, "%s\n", (char*)path.pointer);
kfree(path.pointer);
return result;
}
struct acpi_data_node_attr {
struct attribute attr;
ssize_t (*show)(struct acpi_data_node *, char *);
ssize_t (*store)(struct acpi_data_node *, const char *, size_t count);
};
#define DATA_NODE_ATTR(_name) \
static struct acpi_data_node_attr data_node_##_name = \
__ATTR(_name, 0444, data_node_show_##_name, NULL)
static ssize_t data_node_show_path(struct acpi_data_node *dn, char *buf)
{
return acpi_object_path(dn->handle, buf);
}
DATA_NODE_ATTR(path);
static struct attribute *acpi_data_node_default_attrs[] = {
&data_node_path.attr,
NULL
};
#define to_data_node(k) container_of(k, struct acpi_data_node, kobj)
#define to_attr(a) container_of(a, struct acpi_data_node_attr, attr)
static ssize_t acpi_data_node_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct acpi_data_node *dn = to_data_node(kobj);
struct acpi_data_node_attr *dn_attr = to_attr(attr);
return dn_attr->show ? dn_attr->show(dn, buf) : -ENXIO;
}
static const struct sysfs_ops acpi_data_node_sysfs_ops = {
.show = acpi_data_node_attr_show,
};
static void acpi_data_node_release(struct kobject *kobj)
{
struct acpi_data_node *dn = to_data_node(kobj);
complete(&dn->kobj_done);
}
static struct kobj_type acpi_data_node_ktype = {
.sysfs_ops = &acpi_data_node_sysfs_ops,
.default_attrs = acpi_data_node_default_attrs,
.release = acpi_data_node_release,
};
static void acpi_expose_nondev_subnodes(struct kobject *kobj,
struct acpi_device_data *data)
{
struct list_head *list = &data->subnodes;
struct acpi_data_node *dn;
if (list_empty(list))
return;
list_for_each_entry(dn, list, sibling) {
int ret;
init_completion(&dn->kobj_done);
ret = kobject_init_and_add(&dn->kobj, &acpi_data_node_ktype,
kobj, dn->name);
if (ret)
acpi_handle_err(dn->handle, "Failed to expose (%d)\n", ret);
else
acpi_expose_nondev_subnodes(&dn->kobj, &dn->data);
}
}
static void acpi_hide_nondev_subnodes(struct acpi_device_data *data)
{
struct list_head *list = &data->subnodes;
struct acpi_data_node *dn;
if (list_empty(list))
return;
list_for_each_entry_reverse(dn, list, sibling) {
acpi_hide_nondev_subnodes(&dn->data);
kobject_put(&dn->kobj);
}
}
/** /**
* create_pnp_modalias - Create hid/cid(s) string for modalias and uevent * create_pnp_modalias - Create hid/cid(s) string for modalias and uevent
* @acpi_dev: ACPI device object. * @acpi_dev: ACPI device object.
...@@ -323,20 +423,12 @@ static ssize_t acpi_device_adr_show(struct device *dev, ...@@ -323,20 +423,12 @@ static ssize_t acpi_device_adr_show(struct device *dev,
} }
static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL); static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL);
static ssize_t static ssize_t acpi_device_path_show(struct device *dev,
acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { struct device_attribute *attr, char *buf)
{
struct acpi_device *acpi_dev = to_acpi_device(dev); struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
int result;
result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
if (result)
goto end;
result = sprintf(buf, "%s\n", (char*)path.pointer); return acpi_object_path(acpi_dev->handle, buf);
kfree(path.pointer);
end:
return result;
} }
static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL); static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
...@@ -475,6 +567,8 @@ int acpi_device_setup_files(struct acpi_device *dev) ...@@ -475,6 +567,8 @@ int acpi_device_setup_files(struct acpi_device *dev)
&dev_attr_real_power_state); &dev_attr_real_power_state);
} }
acpi_expose_nondev_subnodes(&dev->dev.kobj, &dev->data);
end: end:
return result; return result;
} }
...@@ -485,6 +579,8 @@ int acpi_device_setup_files(struct acpi_device *dev) ...@@ -485,6 +579,8 @@ int acpi_device_setup_files(struct acpi_device *dev)
*/ */
void acpi_device_remove_files(struct acpi_device *dev) void acpi_device_remove_files(struct acpi_device *dev)
{ {
acpi_hide_nondev_subnodes(&dev->data);
if (dev->flags.power_manageable) { if (dev->flags.power_manageable) {
device_remove_file(&dev->dev, &dev_attr_power_state); device_remove_file(&dev->dev, &dev_attr_power_state);
if (dev->power.flags.power_resources) if (dev->power.flags.power_resources)
......
...@@ -19,11 +19,126 @@ ...@@ -19,11 +19,126 @@
#include "internal.h" #include "internal.h"
static int acpi_data_get_property_array(struct acpi_device_data *data,
const char *name,
acpi_object_type type,
const union acpi_object **obj);
/* ACPI _DSD device properties UUID: daffd814-6eba-4d8c-8a91-bc9bbf4aa301 */ /* ACPI _DSD device properties UUID: daffd814-6eba-4d8c-8a91-bc9bbf4aa301 */
static const u8 prp_uuid[16] = { static const u8 prp_uuid[16] = {
0x14, 0xd8, 0xff, 0xda, 0xba, 0x6e, 0x8c, 0x4d, 0x14, 0xd8, 0xff, 0xda, 0xba, 0x6e, 0x8c, 0x4d,
0x8a, 0x91, 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01 0x8a, 0x91, 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01
}; };
/* ACPI _DSD data subnodes UUID: dbb8e3e6-5886-4ba6-8795-1319f52a966b */
static const u8 ads_uuid[16] = {
0xe6, 0xe3, 0xb8, 0xdb, 0x86, 0x58, 0xa6, 0x4b,
0x87, 0x95, 0x13, 0x19, 0xf5, 0x2a, 0x96, 0x6b
};
static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
const union acpi_object *desc,
struct acpi_device_data *data);
static bool acpi_extract_properties(const union acpi_object *desc,
struct acpi_device_data *data);
static bool acpi_nondev_subnode_ok(acpi_handle scope,
const union acpi_object *link,
struct list_head *list)
{
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
struct acpi_data_node *dn;
acpi_handle handle;
acpi_status status;
dn = kzalloc(sizeof(*dn), GFP_KERNEL);
if (!dn)
return false;
dn->name = link->package.elements[0].string.pointer;
dn->fwnode.type = FWNODE_ACPI_DATA;
INIT_LIST_HEAD(&dn->data.subnodes);
status = acpi_get_handle(scope, link->package.elements[1].string.pointer,
&handle);
if (ACPI_FAILURE(status))
goto fail;
status = acpi_evaluate_object_typed(handle, NULL, NULL, &buf,
ACPI_TYPE_PACKAGE);
if (ACPI_FAILURE(status))
goto fail;
if (acpi_extract_properties(buf.pointer, &dn->data))
dn->handle = handle;
if (acpi_enumerate_nondev_subnodes(scope, buf.pointer, &dn->data))
dn->handle = handle;
if (dn->handle) {
dn->data.pointer = buf.pointer;
list_add_tail(&dn->sibling, list);
return true;
}
acpi_handle_debug(handle, "Invalid properties/subnodes data, skipping\n");
fail:
ACPI_FREE(buf.pointer);
kfree(dn);
return false;
}
static int acpi_add_nondev_subnodes(acpi_handle scope,
const union acpi_object *links,
struct list_head *list)
{
bool ret = false;
int i;
for (i = 0; i < links->package.count; i++) {
const union acpi_object *link;
link = &links->package.elements[i];
/* Only two elements allowed, both must be strings. */
if (link->package.count == 2
&& link->package.elements[0].type == ACPI_TYPE_STRING
&& link->package.elements[1].type == ACPI_TYPE_STRING
&& acpi_nondev_subnode_ok(scope, link, list))
ret = true;
}
return ret;
}
static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
const union acpi_object *desc,
struct acpi_device_data *data)
{
int i;
/* Look for the ACPI data subnodes UUID. */
for (i = 0; i < desc->package.count; i += 2) {
const union acpi_object *uuid, *links;
uuid = &desc->package.elements[i];
links = &desc->package.elements[i + 1];
/*
* The first element must be a UUID and the second one must be
* a package.
*/
if (uuid->type != ACPI_TYPE_BUFFER || uuid->buffer.length != 16
|| links->type != ACPI_TYPE_PACKAGE)
break;
if (memcmp(uuid->buffer.pointer, ads_uuid, sizeof(ads_uuid)))
continue;
return acpi_add_nondev_subnodes(scope, links, &data->subnodes);
}
return false;
}
static bool acpi_property_value_ok(const union acpi_object *value) static bool acpi_property_value_ok(const union acpi_object *value)
{ {
...@@ -81,8 +196,8 @@ static void acpi_init_of_compatible(struct acpi_device *adev) ...@@ -81,8 +196,8 @@ static void acpi_init_of_compatible(struct acpi_device *adev)
const union acpi_object *of_compatible; const union acpi_object *of_compatible;
int ret; int ret;
ret = acpi_dev_get_property_array(adev, "compatible", ACPI_TYPE_STRING, ret = acpi_data_get_property_array(&adev->data, "compatible",
&of_compatible); ACPI_TYPE_STRING, &of_compatible);
if (ret) { if (ret) {
ret = acpi_dev_get_property(adev, "compatible", ret = acpi_dev_get_property(adev, "compatible",
ACPI_TYPE_STRING, &of_compatible); ACPI_TYPE_STRING, &of_compatible);
...@@ -100,34 +215,13 @@ static void acpi_init_of_compatible(struct acpi_device *adev) ...@@ -100,34 +215,13 @@ static void acpi_init_of_compatible(struct acpi_device *adev)
adev->flags.of_compatible_ok = 1; adev->flags.of_compatible_ok = 1;
} }
void acpi_init_properties(struct acpi_device *adev) static bool acpi_extract_properties(const union acpi_object *desc,
struct acpi_device_data *data)
{ {
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
bool acpi_of = false;
struct acpi_hardware_id *hwid;
const union acpi_object *desc;
acpi_status status;
int i; int i;
/*
* Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
* Device Tree compatible properties for this device.
*/
list_for_each_entry(hwid, &adev->pnp.ids, list) {
if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) {
acpi_of = true;
break;
}
}
status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf,
ACPI_TYPE_PACKAGE);
if (ACPI_FAILURE(status))
goto out;
desc = buf.pointer;
if (desc->package.count % 2) if (desc->package.count % 2)
goto fail; return false;
/* Look for the device properties UUID. */ /* Look for the device properties UUID. */
for (i = 0; i < desc->package.count; i += 2) { for (i = 0; i < desc->package.count; i += 2) {
...@@ -154,18 +248,50 @@ void acpi_init_properties(struct acpi_device *adev) ...@@ -154,18 +248,50 @@ void acpi_init_properties(struct acpi_device *adev)
if (!acpi_properties_format_valid(properties)) if (!acpi_properties_format_valid(properties))
break; break;
adev->data.pointer = buf.pointer; data->properties = properties;
adev->data.properties = properties; return true;
}
if (acpi_of) return false;
acpi_init_of_compatible(adev); }
void acpi_init_properties(struct acpi_device *adev)
{
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
struct acpi_hardware_id *hwid;
acpi_status status;
bool acpi_of = false;
INIT_LIST_HEAD(&adev->data.subnodes);
/*
* Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
* Device Tree compatible properties for this device.
*/
list_for_each_entry(hwid, &adev->pnp.ids, list) {
if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) {
acpi_of = true;
break;
}
}
status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf,
ACPI_TYPE_PACKAGE);
if (ACPI_FAILURE(status))
goto out; goto out;
if (acpi_extract_properties(buf.pointer, &adev->data)) {
adev->data.pointer = buf.pointer;
if (acpi_of)
acpi_init_of_compatible(adev);
} }
if (acpi_enumerate_nondev_subnodes(adev->handle, buf.pointer, &adev->data))
adev->data.pointer = buf.pointer;
fail: if (!adev->data.pointer) {
dev_dbg(&adev->dev, "Returned _DSD data is not valid, skipping\n"); acpi_handle_debug(adev->handle, "Invalid _DSD data, skipping\n");
ACPI_FREE(buf.pointer); ACPI_FREE(buf.pointer);
}
out: out:
if (acpi_of && !adev->flags.of_compatible_ok) if (acpi_of && !adev->flags.of_compatible_ok)
...@@ -173,8 +299,25 @@ void acpi_init_properties(struct acpi_device *adev) ...@@ -173,8 +299,25 @@ void acpi_init_properties(struct acpi_device *adev)
ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n"); ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n");
} }
static void acpi_destroy_nondev_subnodes(struct list_head *list)
{
struct acpi_data_node *dn, *next;
if (list_empty(list))
return;
list_for_each_entry_safe_reverse(dn, next, list, sibling) {
acpi_destroy_nondev_subnodes(&dn->data.subnodes);
wait_for_completion(&dn->kobj_done);
list_del(&dn->sibling);
ACPI_FREE((void *)dn->data.pointer);
kfree(dn);
}
}
void acpi_free_properties(struct acpi_device *adev) void acpi_free_properties(struct acpi_device *adev)
{ {
acpi_destroy_nondev_subnodes(&adev->data.subnodes);
ACPI_FREE((void *)adev->data.pointer); ACPI_FREE((void *)adev->data.pointer);
adev->data.of_compatible = NULL; adev->data.of_compatible = NULL;
adev->data.pointer = NULL; adev->data.pointer = NULL;
...@@ -182,8 +325,8 @@ void acpi_free_properties(struct acpi_device *adev) ...@@ -182,8 +325,8 @@ void acpi_free_properties(struct acpi_device *adev)
} }
/** /**
* acpi_dev_get_property - return an ACPI property with given name * acpi_data_get_property - return an ACPI property with given name
* @adev: ACPI device to get property * @data: ACPI device deta object to get the property from
* @name: Name of the property * @name: Name of the property
* @type: Expected property type * @type: Expected property type
* @obj: Location to store the property value (if not %NULL) * @obj: Location to store the property value (if not %NULL)
...@@ -192,26 +335,27 @@ void acpi_free_properties(struct acpi_device *adev) ...@@ -192,26 +335,27 @@ void acpi_free_properties(struct acpi_device *adev)
* object at the location pointed to by @obj if found. * object at the location pointed to by @obj if found.
* *
* Callers must not attempt to free the returned objects. These objects will be * Callers must not attempt to free the returned objects. These objects will be
* freed by the ACPI core automatically during the removal of @adev. * freed by the ACPI core automatically during the removal of @data.
* *
* Return: %0 if property with @name has been found (success), * Return: %0 if property with @name has been found (success),
* %-EINVAL if the arguments are invalid, * %-EINVAL if the arguments are invalid,
* %-ENODATA if the property doesn't exist, * %-ENODATA if the property doesn't exist,
* %-EPROTO if the property value type doesn't match @type. * %-EPROTO if the property value type doesn't match @type.
*/ */
int acpi_dev_get_property(struct acpi_device *adev, const char *name, static int acpi_data_get_property(struct acpi_device_data *data,
acpi_object_type type, const union acpi_object **obj) const char *name, acpi_object_type type,
const union acpi_object **obj)
{ {
const union acpi_object *properties; const union acpi_object *properties;
int i; int i;
if (!adev || !name) if (!data || !name)
return -EINVAL; return -EINVAL;
if (!adev->data.pointer || !adev->data.properties) if (!data->pointer || !data->properties)
return -ENODATA; return -ENODATA;
properties = adev->data.properties; properties = data->properties;
for (i = 0; i < properties->package.count; i++) { for (i = 0; i < properties->package.count; i++) {
const union acpi_object *propname, *propvalue; const union acpi_object *propname, *propvalue;
const union acpi_object *property; const union acpi_object *property;
...@@ -232,11 +376,50 @@ int acpi_dev_get_property(struct acpi_device *adev, const char *name, ...@@ -232,11 +376,50 @@ int acpi_dev_get_property(struct acpi_device *adev, const char *name,
} }
return -ENODATA; return -ENODATA;
} }
/**
* acpi_dev_get_property - return an ACPI property with given name.
* @adev: ACPI device to get the property from.
* @name: Name of the property.
* @type: Expected property type.
* @obj: Location to store the property value (if not %NULL).
*/
int acpi_dev_get_property(struct acpi_device *adev, const char *name,
acpi_object_type type, const union acpi_object **obj)
{
return adev ? acpi_data_get_property(&adev->data, name, type, obj) : -EINVAL;
}
EXPORT_SYMBOL_GPL(acpi_dev_get_property); EXPORT_SYMBOL_GPL(acpi_dev_get_property);
static struct acpi_device_data *acpi_device_data_of_node(struct fwnode_handle *fwnode)
{
if (fwnode->type == FWNODE_ACPI) {
struct acpi_device *adev = to_acpi_device_node(fwnode);
return &adev->data;
} else if (fwnode->type == FWNODE_ACPI_DATA) {
struct acpi_data_node *dn = to_acpi_data_node(fwnode);
return &dn->data;
}
return NULL;
}
/**
* acpi_node_prop_get - return an ACPI property with given name.
* @fwnode: Firmware node to get the property from.
* @propname: Name of the property.
* @valptr: Location to store a pointer to the property value (if not %NULL).
*/
int acpi_node_prop_get(struct fwnode_handle *fwnode, const char *propname,
void **valptr)
{
return acpi_data_get_property(acpi_device_data_of_node(fwnode),
propname, ACPI_TYPE_ANY,
(const union acpi_object **)valptr);
}
/** /**
* acpi_dev_get_property_array - return an ACPI array property with given name * acpi_data_get_property_array - return an ACPI array property with given name
* @adev: ACPI device to get property * @adev: ACPI data object to get the property from
* @name: Name of the property * @name: Name of the property
* @type: Expected type of array elements * @type: Expected type of array elements
* @obj: Location to store a pointer to the property value (if not NULL) * @obj: Location to store a pointer to the property value (if not NULL)
...@@ -245,7 +428,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property); ...@@ -245,7 +428,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property);
* ACPI object at the location pointed to by @obj if found. * ACPI object at the location pointed to by @obj if found.
* *
* Callers must not attempt to free the returned objects. Those objects will be * Callers must not attempt to free the returned objects. Those objects will be
* freed by the ACPI core automatically during the removal of @adev. * freed by the ACPI core automatically during the removal of @data.
* *
* Return: %0 if array property (package) with @name has been found (success), * Return: %0 if array property (package) with @name has been found (success),
* %-EINVAL if the arguments are invalid, * %-EINVAL if the arguments are invalid,
...@@ -253,14 +436,15 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property); ...@@ -253,14 +436,15 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property);
* %-EPROTO if the property is not a package or the type of its elements * %-EPROTO if the property is not a package or the type of its elements
* doesn't match @type. * doesn't match @type.
*/ */
int acpi_dev_get_property_array(struct acpi_device *adev, const char *name, static int acpi_data_get_property_array(struct acpi_device_data *data,
acpi_object_type type, const char *name,
const union acpi_object **obj) acpi_object_type type,
const union acpi_object **obj)
{ {
const union acpi_object *prop; const union acpi_object *prop;
int ret, i; int ret, i;
ret = acpi_dev_get_property(adev, name, ACPI_TYPE_PACKAGE, &prop); ret = acpi_data_get_property(data, name, ACPI_TYPE_PACKAGE, &prop);
if (ret) if (ret)
return ret; return ret;
...@@ -275,12 +459,11 @@ int acpi_dev_get_property_array(struct acpi_device *adev, const char *name, ...@@ -275,12 +459,11 @@ int acpi_dev_get_property_array(struct acpi_device *adev, const char *name,
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(acpi_dev_get_property_array);
/** /**
* acpi_dev_get_property_reference - returns handle to the referenced object * acpi_data_get_property_reference - returns handle to the referenced object
* @adev: ACPI device to get property * @data: ACPI device data object containing the property
* @name: Name of the property * @propname: Name of the property
* @index: Index of the reference to return * @index: Index of the reference to return
* @args: Location to store the returned reference with optional arguments * @args: Location to store the returned reference with optional arguments
* *
...@@ -294,16 +477,16 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property_array); ...@@ -294,16 +477,16 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property_array);
* *
* Return: %0 on success, negative error code on failure. * Return: %0 on success, negative error code on failure.
*/ */
int acpi_dev_get_property_reference(struct acpi_device *adev, static int acpi_data_get_property_reference(struct acpi_device_data *data,
const char *name, size_t index, const char *propname, size_t index,
struct acpi_reference_args *args) struct acpi_reference_args *args)
{ {
const union acpi_object *element, *end; const union acpi_object *element, *end;
const union acpi_object *obj; const union acpi_object *obj;
struct acpi_device *device; struct acpi_device *device;
int ret, idx = 0; int ret, idx = 0;
ret = acpi_dev_get_property(adev, name, ACPI_TYPE_ANY, &obj); ret = acpi_data_get_property(data, propname, ACPI_TYPE_ANY, &obj);
if (ret) if (ret)
return ret; return ret;
...@@ -378,17 +561,27 @@ int acpi_dev_get_property_reference(struct acpi_device *adev, ...@@ -378,17 +561,27 @@ int acpi_dev_get_property_reference(struct acpi_device *adev,
return -EPROTO; return -EPROTO;
} }
EXPORT_SYMBOL_GPL(acpi_dev_get_property_reference);
int acpi_dev_prop_get(struct acpi_device *adev, const char *propname, /**
void **valptr) * acpi_node_get_property_reference - get a handle to the referenced object.
* @fwnode: Firmware node to get the property from.
* @propname: Name of the property.
* @index: Index of the reference to return.
* @args: Location to store the returned reference with optional arguments.
*/
int acpi_node_get_property_reference(struct fwnode_handle *fwnode,
const char *name, size_t index,
struct acpi_reference_args *args)
{ {
return acpi_dev_get_property(adev, propname, ACPI_TYPE_ANY, struct acpi_device_data *data = acpi_device_data_of_node(fwnode);
(const union acpi_object **)valptr);
return data ? acpi_data_get_property_reference(data, name, index, args) : -EINVAL;
} }
EXPORT_SYMBOL_GPL(acpi_node_get_property_reference);
int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, static int acpi_data_prop_read_single(struct acpi_device_data *data,
enum dev_prop_type proptype, void *val) const char *propname,
enum dev_prop_type proptype, void *val)
{ {
const union acpi_object *obj; const union acpi_object *obj;
int ret; int ret;
...@@ -397,7 +590,7 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, ...@@ -397,7 +590,7 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
return -EINVAL; return -EINVAL;
if (proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64) { if (proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64) {
ret = acpi_dev_get_property(adev, propname, ACPI_TYPE_INTEGER, &obj); ret = acpi_data_get_property(data, propname, ACPI_TYPE_INTEGER, &obj);
if (ret) if (ret)
return ret; return ret;
...@@ -422,7 +615,7 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, ...@@ -422,7 +615,7 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
break; break;
} }
} else if (proptype == DEV_PROP_STRING) { } else if (proptype == DEV_PROP_STRING) {
ret = acpi_dev_get_property(adev, propname, ACPI_TYPE_STRING, &obj); ret = acpi_data_get_property(data, propname, ACPI_TYPE_STRING, &obj);
if (ret) if (ret)
return ret; return ret;
...@@ -433,6 +626,12 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, ...@@ -433,6 +626,12 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
return ret; return ret;
} }
int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val)
{
return adev ? acpi_data_prop_read_single(&adev->data, propname, proptype, val) : -EINVAL;
}
static int acpi_copy_property_array_u8(const union acpi_object *items, u8 *val, static int acpi_copy_property_array_u8(const union acpi_object *items, u8 *val,
size_t nval) size_t nval)
{ {
...@@ -509,20 +708,22 @@ static int acpi_copy_property_array_string(const union acpi_object *items, ...@@ -509,20 +708,22 @@ static int acpi_copy_property_array_string(const union acpi_object *items,
return 0; return 0;
} }
int acpi_dev_prop_read(struct acpi_device *adev, const char *propname, static int acpi_data_prop_read(struct acpi_device_data *data,
enum dev_prop_type proptype, void *val, size_t nval) const char *propname,
enum dev_prop_type proptype,
void *val, size_t nval)
{ {
const union acpi_object *obj; const union acpi_object *obj;
const union acpi_object *items; const union acpi_object *items;
int ret; int ret;
if (val && nval == 1) { if (val && nval == 1) {
ret = acpi_dev_prop_read_single(adev, propname, proptype, val); ret = acpi_data_prop_read_single(data, propname, proptype, val);
if (!ret) if (!ret)
return ret; return ret;
} }
ret = acpi_dev_get_property_array(adev, propname, ACPI_TYPE_ANY, &obj); ret = acpi_data_get_property_array(data, propname, ACPI_TYPE_ANY, &obj);
if (ret) if (ret)
return ret; return ret;
...@@ -558,3 +759,84 @@ int acpi_dev_prop_read(struct acpi_device *adev, const char *propname, ...@@ -558,3 +759,84 @@ int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
} }
return ret; return ret;
} }
int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val, size_t nval)
{
return adev ? acpi_data_prop_read(&adev->data, propname, proptype, val, nval) : -EINVAL;
}
/**
* acpi_node_prop_read - retrieve the value of an ACPI property with given name.
* @fwnode: Firmware node to get the property from.
* @propname: Name of the property.
* @proptype: Expected property type.
* @val: Location to store the property value (if not %NULL).
* @nval: Size of the array pointed to by @val.
*
* If @val is %NULL, return the number of array elements comprising the value
* of the property. Otherwise, read at most @nval values to the array at the
* location pointed to by @val.
*/
int acpi_node_prop_read(struct fwnode_handle *fwnode, const char *propname,
enum dev_prop_type proptype, void *val, size_t nval)
{
return acpi_data_prop_read(acpi_device_data_of_node(fwnode),
propname, proptype, val, nval);
}
/**
* acpi_get_next_subnode - Return the next child node handle for a device.
* @dev: Device to find the next child node for.
* @child: Handle to one of the device's child nodes or a null handle.
*/
struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
struct fwnode_handle *child)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
struct list_head *head, *next;
if (!adev)
return NULL;
if (!child || child->type == FWNODE_ACPI) {
head = &adev->children;
if (list_empty(head))
goto nondev;
if (child) {
adev = to_acpi_device_node(child);
next = adev->node.next;
if (next == head) {
child = NULL;
goto nondev;
}
adev = list_entry(next, struct acpi_device, node);
} else {
adev = list_first_entry(head, struct acpi_device, node);
}
return acpi_fwnode_handle(adev);
}
nondev:
if (!child || child->type == FWNODE_ACPI_DATA) {
struct acpi_data_node *dn;
head = &adev->data.subnodes;
if (list_empty(head))
return NULL;
if (child) {
dn = to_acpi_data_node(child);
next = dn->sibling.next;
if (next == head)
return NULL;
dn = list_entry(next, struct acpi_data_node, sibling);
} else {
dn = list_first_entry(head, struct acpi_data_node, sibling);
}
return &dn->fwnode;
}
return NULL;
}
...@@ -695,26 +695,6 @@ int acpi_device_add(struct acpi_device *device, ...@@ -695,26 +695,6 @@ int acpi_device_add(struct acpi_device *device,
return result; return result;
} }
struct acpi_device *acpi_get_next_child(struct device *dev,
struct acpi_device *child)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
struct list_head *head, *next;
if (!adev)
return NULL;
head = &adev->children;
if (list_empty(head))
return NULL;
if (!child)
return list_first_entry(head, struct acpi_device, node);
next = child->node.next;
return next == head ? NULL : list_entry(next, struct acpi_device, node);
}
/* -------------------------------------------------------------------------- /* --------------------------------------------------------------------------
Device Enumeration Device Enumeration
-------------------------------------------------------------------------- */ -------------------------------------------------------------------------- */
......
...@@ -134,7 +134,7 @@ bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname) ...@@ -134,7 +134,7 @@ bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname)
if (is_of_node(fwnode)) if (is_of_node(fwnode))
return of_property_read_bool(to_of_node(fwnode), propname); return of_property_read_bool(to_of_node(fwnode), propname);
else if (is_acpi_node(fwnode)) else if (is_acpi_node(fwnode))
return !acpi_dev_prop_get(to_acpi_node(fwnode), propname, NULL); return !acpi_node_prop_get(fwnode, propname, NULL);
return !!pset_prop_get(to_pset(fwnode), propname); return !!pset_prop_get(to_pset(fwnode), propname);
} }
...@@ -287,6 +287,28 @@ int device_property_read_string(struct device *dev, const char *propname, ...@@ -287,6 +287,28 @@ int device_property_read_string(struct device *dev, const char *propname,
} }
EXPORT_SYMBOL_GPL(device_property_read_string); EXPORT_SYMBOL_GPL(device_property_read_string);
/**
* device_property_match_string - find a string in an array and return index
* @dev: Device to get the property of
* @propname: Name of the property holding the array
* @string: String to look for
*
* Find a given string in a string array and if it is found return the
* index back.
*
* Return: %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of strings,
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_match_string(struct device *dev, const char *propname,
const char *string)
{
return fwnode_property_match_string(dev_fwnode(dev), propname, string);
}
EXPORT_SYMBOL_GPL(device_property_match_string);
#define OF_DEV_PROP_READ_ARRAY(node, propname, type, val, nval) \ #define OF_DEV_PROP_READ_ARRAY(node, propname, type, val, nval) \
(val) ? of_property_read_##type##_array((node), (propname), (val), (nval)) \ (val) ? of_property_read_##type##_array((node), (propname), (val), (nval)) \
: of_property_count_elems_of_size((node), (propname), sizeof(type)) : of_property_count_elems_of_size((node), (propname), sizeof(type))
...@@ -298,8 +320,8 @@ EXPORT_SYMBOL_GPL(device_property_read_string); ...@@ -298,8 +320,8 @@ EXPORT_SYMBOL_GPL(device_property_read_string);
_ret_ = OF_DEV_PROP_READ_ARRAY(to_of_node(_fwnode_), _propname_, \ _ret_ = OF_DEV_PROP_READ_ARRAY(to_of_node(_fwnode_), _propname_, \
_type_, _val_, _nval_); \ _type_, _val_, _nval_); \
else if (is_acpi_node(_fwnode_)) \ else if (is_acpi_node(_fwnode_)) \
_ret_ = acpi_dev_prop_read(to_acpi_node(_fwnode_), _propname_, \ _ret_ = acpi_node_prop_read(_fwnode_, _propname_, _proptype_, \
_proptype_, _val_, _nval_); \ _val_, _nval_); \
else if (is_pset(_fwnode_)) \ else if (is_pset(_fwnode_)) \
_ret_ = pset_prop_read_array(to_pset(_fwnode_), _propname_, \ _ret_ = pset_prop_read_array(to_pset(_fwnode_), _propname_, \
_proptype_, _val_, _nval_); \ _proptype_, _val_, _nval_); \
...@@ -440,8 +462,8 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode, ...@@ -440,8 +462,8 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
propname, val, nval) : propname, val, nval) :
of_property_count_strings(to_of_node(fwnode), propname); of_property_count_strings(to_of_node(fwnode), propname);
else if (is_acpi_node(fwnode)) else if (is_acpi_node(fwnode))
return acpi_dev_prop_read(to_acpi_node(fwnode), propname, return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
DEV_PROP_STRING, val, nval); val, nval);
else if (is_pset(fwnode)) else if (is_pset(fwnode))
return pset_prop_read_array(to_pset(fwnode), propname, return pset_prop_read_array(to_pset(fwnode), propname,
DEV_PROP_STRING, val, nval); DEV_PROP_STRING, val, nval);
...@@ -470,14 +492,60 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode, ...@@ -470,14 +492,60 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode,
if (is_of_node(fwnode)) if (is_of_node(fwnode))
return of_property_read_string(to_of_node(fwnode), propname, val); return of_property_read_string(to_of_node(fwnode), propname, val);
else if (is_acpi_node(fwnode)) else if (is_acpi_node(fwnode))
return acpi_dev_prop_read(to_acpi_node(fwnode), propname, return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
DEV_PROP_STRING, val, 1); val, 1);
return pset_prop_read_array(to_pset(fwnode), propname, return pset_prop_read_array(to_pset(fwnode), propname,
DEV_PROP_STRING, val, 1); DEV_PROP_STRING, val, 1);
} }
EXPORT_SYMBOL_GPL(fwnode_property_read_string); EXPORT_SYMBOL_GPL(fwnode_property_read_string);
/**
* fwnode_property_match_string - find a string in an array and return index
* @fwnode: Firmware node to get the property of
* @propname: Name of the property holding the array
* @string: String to look for
*
* Find a given string in a string array and if it is found return the
* index back.
*
* Return: %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of strings,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_match_string(struct fwnode_handle *fwnode,
const char *propname, const char *string)
{
const char **values;
int nval, ret, i;
nval = fwnode_property_read_string_array(fwnode, propname, NULL, 0);
if (nval < 0)
return nval;
values = kcalloc(nval, sizeof(*values), GFP_KERNEL);
if (!values)
return -ENOMEM;
ret = fwnode_property_read_string_array(fwnode, propname, values, nval);
if (ret < 0)
goto out;
ret = -ENODATA;
for (i = 0; i < nval; i++) {
if (!strcmp(values[i], string)) {
ret = i;
break;
}
}
out:
kfree(values);
return ret;
}
EXPORT_SYMBOL_GPL(fwnode_property_match_string);
/** /**
* device_get_next_child_node - Return the next child node handle for a device * device_get_next_child_node - Return the next child node handle for a device
* @dev: Device to find the next child node for. * @dev: Device to find the next child node for.
...@@ -493,11 +561,7 @@ struct fwnode_handle *device_get_next_child_node(struct device *dev, ...@@ -493,11 +561,7 @@ struct fwnode_handle *device_get_next_child_node(struct device *dev,
if (node) if (node)
return &node->fwnode; return &node->fwnode;
} else if (IS_ENABLED(CONFIG_ACPI)) { } else if (IS_ENABLED(CONFIG_ACPI)) {
struct acpi_device *node; return acpi_get_next_subnode(dev, child);
node = acpi_get_next_child(dev, to_acpi_node(child));
if (node)
return acpi_fwnode_handle(node);
} }
return NULL; return NULL;
} }
......
...@@ -21,6 +21,7 @@ ...@@ -21,6 +21,7 @@
#include <linux/ioport.h> #include <linux/ioport.h>
#include <linux/acpi.h> #include <linux/acpi.h>
#include <linux/acpi_dma.h> #include <linux/acpi_dma.h>
#include <linux/property.h>
static LIST_HEAD(acpi_dma_list); static LIST_HEAD(acpi_dma_list);
static DEFINE_MUTEX(acpi_dma_lock); static DEFINE_MUTEX(acpi_dma_lock);
...@@ -413,21 +414,29 @@ EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_index); ...@@ -413,21 +414,29 @@ EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_index);
* translate the names "tx" and "rx" here based on the most common case where * translate the names "tx" and "rx" here based on the most common case where
* the first FixedDMA descriptor is TX and second is RX. * the first FixedDMA descriptor is TX and second is RX.
* *
* If the device has "dma-names" property the FixedDMA descriptor indices
* are retrieved based on those. Otherwise the function falls back using
* hardcoded indices.
*
* Return: * Return:
* Pointer to appropriate dma channel on success or an error pointer. * Pointer to appropriate dma channel on success or an error pointer.
*/ */
struct dma_chan *acpi_dma_request_slave_chan_by_name(struct device *dev, struct dma_chan *acpi_dma_request_slave_chan_by_name(struct device *dev,
const char *name) const char *name)
{ {
size_t index; int index;
if (!strcmp(name, "tx")) index = device_property_match_string(dev, "dma-names", name);
index = 0; if (index < 0) {
else if (!strcmp(name, "rx")) if (!strcmp(name, "tx"))
index = 1; index = 0;
else else if (!strcmp(name, "rx"))
return ERR_PTR(-ENODEV); index = 1;
else
return ERR_PTR(-ENODEV);
}
dev_dbg(dev, "found DMA channel \"%s\" at index %d\n", name, index);
return acpi_dma_request_slave_chan_by_index(dev, index); return acpi_dma_request_slave_chan_by_index(dev, index);
} }
EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_name); EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_name);
......
...@@ -389,6 +389,8 @@ struct acpi_gpio_lookup { ...@@ -389,6 +389,8 @@ struct acpi_gpio_lookup {
struct acpi_gpio_info info; struct acpi_gpio_info info;
int index; int index;
int pin_index; int pin_index;
bool active_low;
struct acpi_device *adev;
struct gpio_desc *desc; struct gpio_desc *desc;
int n; int n;
}; };
...@@ -425,6 +427,65 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data) ...@@ -425,6 +427,65 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
return 1; return 1;
} }
static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup,
struct acpi_gpio_info *info)
{
struct list_head res_list;
int ret;
INIT_LIST_HEAD(&res_list);
ret = acpi_dev_get_resources(lookup->adev, &res_list, acpi_find_gpio,
lookup);
if (ret < 0)
return ret;
acpi_dev_free_resource_list(&res_list);
if (!lookup->desc)
return -ENOENT;
if (info) {
*info = lookup->info;
if (lookup->active_low)
info->active_low = lookup->active_low;
}
return 0;
}
static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode,
const char *propname, int index,
struct acpi_gpio_lookup *lookup)
{
struct acpi_reference_args args;
int ret;
memset(&args, 0, sizeof(args));
ret = acpi_node_get_property_reference(fwnode, propname, index, &args);
if (ret) {
struct acpi_device *adev = to_acpi_device_node(fwnode);
if (!adev)
return ret;
if (!acpi_get_driver_gpio_data(adev, propname, index, &args))
return ret;
}
/*
* The property was found and resolved, so need to lookup the GPIO based
* on returned args.
*/
lookup->adev = args.adev;
if (args.nargs >= 2) {
lookup->index = args.args[0];
lookup->pin_index = args.args[1];
/* 3rd argument, if present is used to specify active_low. */
if (args.nargs >= 3)
lookup->active_low = !!args.args[2];
}
return 0;
}
/** /**
* acpi_get_gpiod_by_index() - get a GPIO descriptor from device resources * acpi_get_gpiod_by_index() - get a GPIO descriptor from device resources
* @adev: pointer to a ACPI device to get GPIO from * @adev: pointer to a ACPI device to get GPIO from
...@@ -452,8 +513,6 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev, ...@@ -452,8 +513,6 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
struct acpi_gpio_info *info) struct acpi_gpio_info *info)
{ {
struct acpi_gpio_lookup lookup; struct acpi_gpio_lookup lookup;
struct list_head resource_list;
bool active_low = false;
int ret; int ret;
if (!adev) if (!adev)
...@@ -463,58 +522,64 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev, ...@@ -463,58 +522,64 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
lookup.index = index; lookup.index = index;
if (propname) { if (propname) {
struct acpi_reference_args args;
dev_dbg(&adev->dev, "GPIO: looking up %s\n", propname); dev_dbg(&adev->dev, "GPIO: looking up %s\n", propname);
memset(&args, 0, sizeof(args)); ret = acpi_gpio_property_lookup(acpi_fwnode_handle(adev),
ret = acpi_dev_get_property_reference(adev, propname, propname, index, &lookup);
index, &args); if (ret)
if (ret) { return ERR_PTR(ret);
bool found = acpi_get_driver_gpio_data(adev, propname,
index, &args);
if (!found)
return ERR_PTR(ret);
}
/* dev_dbg(&adev->dev, "GPIO: _DSD returned %s %d %d %u\n",
* The property was found and resolved so need to dev_name(&lookup.adev->dev), lookup.index,
* lookup the GPIO based on returned args instead. lookup.pin_index, lookup.active_low);
*/
adev = args.adev;
if (args.nargs >= 2) {
lookup.index = args.args[0];
lookup.pin_index = args.args[1];
/*
* 3rd argument, if present is used to
* specify active_low.
*/
if (args.nargs >= 3)
active_low = !!args.args[2];
}
dev_dbg(&adev->dev, "GPIO: _DSD returned %s %zd %llu %llu %llu\n",
dev_name(&adev->dev), args.nargs,
args.args[0], args.args[1], args.args[2]);
} else { } else {
dev_dbg(&adev->dev, "GPIO: looking up %d in _CRS\n", index); dev_dbg(&adev->dev, "GPIO: looking up %d in _CRS\n", index);
lookup.adev = adev;
} }
INIT_LIST_HEAD(&resource_list); ret = acpi_gpio_resource_lookup(&lookup, info);
ret = acpi_dev_get_resources(adev, &resource_list, acpi_find_gpio, return ret ? ERR_PTR(ret) : lookup.desc;
&lookup); }
if (ret < 0)
return ERR_PTR(ret); /**
* acpi_node_get_gpiod() - get a GPIO descriptor from ACPI resources
* @fwnode: pointer to an ACPI firmware node to get the GPIO information from
* @propname: Property name of the GPIO
* @index: index of GpioIo/GpioInt resource (starting from %0)
* @info: info pointer to fill in (optional)
*
* If @fwnode is an ACPI device object, call %acpi_get_gpiod_by_index() for it.
* Otherwise (ie. it is a data-only non-device object), use the property-based
* GPIO lookup to get to the GPIO resource with the relevant information and use
* that to obtain the GPIO descriptor to return.
*/
struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
const char *propname, int index,
struct acpi_gpio_info *info)
{
struct acpi_gpio_lookup lookup;
struct acpi_device *adev;
int ret;
acpi_dev_free_resource_list(&resource_list); adev = to_acpi_device_node(fwnode);
if (adev)
return acpi_get_gpiod_by_index(adev, propname, index, info);
if (lookup.desc && info) { if (!is_acpi_data_node(fwnode))
*info = lookup.info; return ERR_PTR(-ENODEV);
if (active_low)
info->active_low = active_low; if (!propname)
} return ERR_PTR(-EINVAL);
memset(&lookup, 0, sizeof(lookup));
lookup.index = index;
ret = acpi_gpio_property_lookup(fwnode, propname, index, &lookup);
if (ret)
return ERR_PTR(ret);
return lookup.desc ? lookup.desc : ERR_PTR(-ENOENT); ret = acpi_gpio_resource_lookup(&lookup, info);
return ret ? ERR_PTR(ret) : lookup.desc;
} }
/** /**
......
...@@ -2093,8 +2093,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, ...@@ -2093,8 +2093,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
} else if (is_acpi_node(fwnode)) { } else if (is_acpi_node(fwnode)) {
struct acpi_gpio_info info; struct acpi_gpio_info info;
desc = acpi_get_gpiod_by_index(to_acpi_node(fwnode), propname, 0, desc = acpi_node_get_gpiod(fwnode, propname, 0, &info);
&info);
if (!IS_ERR(desc)) if (!IS_ERR(desc))
active_low = info.active_low; active_low = info.active_low;
} }
......
...@@ -42,6 +42,9 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip); ...@@ -42,6 +42,9 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev, struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
const char *propname, int index, const char *propname, int index,
struct acpi_gpio_info *info); struct acpi_gpio_info *info);
struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
const char *propname, int index,
struct acpi_gpio_info *info);
int acpi_gpio_count(struct device *dev, const char *con_id); int acpi_gpio_count(struct device *dev, const char *con_id);
#else #else
...@@ -60,7 +63,12 @@ acpi_get_gpiod_by_index(struct acpi_device *adev, const char *propname, ...@@ -60,7 +63,12 @@ acpi_get_gpiod_by_index(struct acpi_device *adev, const char *propname,
{ {
return ERR_PTR(-ENOSYS); return ERR_PTR(-ENOSYS);
} }
static inline struct gpio_desc *
acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
int index, struct acpi_gpio_info *info)
{
return ERR_PTR(-ENXIO);
}
static inline int acpi_gpio_count(struct device *dev, const char *con_id) static inline int acpi_gpio_count(struct device *dev, const char *con_id)
{ {
return -ENODEV; return -ENODEV;
......
...@@ -343,6 +343,7 @@ struct acpi_device_data { ...@@ -343,6 +343,7 @@ struct acpi_device_data {
const union acpi_object *pointer; const union acpi_object *pointer;
const union acpi_object *properties; const union acpi_object *properties;
const union acpi_object *of_compatible; const union acpi_object *of_compatible;
struct list_head subnodes;
}; };
struct acpi_gpio_mapping; struct acpi_gpio_mapping;
...@@ -378,6 +379,17 @@ struct acpi_device { ...@@ -378,6 +379,17 @@ struct acpi_device {
void (*remove)(struct acpi_device *); void (*remove)(struct acpi_device *);
}; };
/* Non-device subnode */
struct acpi_data_node {
const char *name;
acpi_handle handle;
struct fwnode_handle fwnode;
struct acpi_device_data data;
struct list_head sibling;
struct kobject kobj;
struct completion kobj_done;
};
static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent) static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent)
{ {
bool ret = false; bool ret = false;
...@@ -412,16 +424,33 @@ static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent) ...@@ -412,16 +424,33 @@ static inline bool acpi_check_dma(struct acpi_device *adev, bool *coherent)
} }
static inline bool is_acpi_node(struct fwnode_handle *fwnode) static inline bool is_acpi_node(struct fwnode_handle *fwnode)
{
return fwnode && (fwnode->type == FWNODE_ACPI
|| fwnode->type == FWNODE_ACPI_DATA);
}
static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)
{ {
return fwnode && fwnode->type == FWNODE_ACPI; return fwnode && fwnode->type == FWNODE_ACPI;
} }
static inline struct acpi_device *to_acpi_node(struct fwnode_handle *fwnode) static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
{ {
return is_acpi_node(fwnode) ? return is_acpi_device_node(fwnode) ?
container_of(fwnode, struct acpi_device, fwnode) : NULL; container_of(fwnode, struct acpi_device, fwnode) : NULL;
} }
static inline bool is_acpi_data_node(struct fwnode_handle *fwnode)
{
return fwnode && fwnode->type == FWNODE_ACPI_DATA;
}
static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)
{
return is_acpi_data_node(fwnode) ?
container_of(fwnode, struct acpi_data_node, fwnode) : NULL;
}
static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
{ {
return &adev->fwnode; return &adev->fwnode;
......
...@@ -49,7 +49,7 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev) ...@@ -49,7 +49,7 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
return adev ? adev->handle : NULL; return adev ? adev->handle : NULL;
} }
#define ACPI_COMPANION(dev) to_acpi_node((dev)->fwnode) #define ACPI_COMPANION(dev) to_acpi_device_node((dev)->fwnode)
#define ACPI_COMPANION_SET(dev, adev) set_primary_fwnode(dev, (adev) ? \ #define ACPI_COMPANION_SET(dev, adev) set_primary_fwnode(dev, (adev) ? \
acpi_fwnode_handle(adev) : NULL) acpi_fwnode_handle(adev) : NULL)
#define ACPI_HANDLE(dev) acpi_device_handle(ACPI_COMPANION(dev)) #define ACPI_HANDLE(dev) acpi_device_handle(ACPI_COMPANION(dev))
...@@ -69,7 +69,7 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev) ...@@ -69,7 +69,7 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
static inline bool has_acpi_companion(struct device *dev) static inline bool has_acpi_companion(struct device *dev)
{ {
return is_acpi_node(dev->fwnode); return is_acpi_device_node(dev->fwnode);
} }
static inline void acpi_preset_companion(struct device *dev, static inline void acpi_preset_companion(struct device *dev,
...@@ -461,7 +461,22 @@ static inline bool is_acpi_node(struct fwnode_handle *fwnode) ...@@ -461,7 +461,22 @@ static inline bool is_acpi_node(struct fwnode_handle *fwnode)
return false; return false;
} }
static inline struct acpi_device *to_acpi_node(struct fwnode_handle *fwnode) static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)
{
return false;
}
static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
{
return NULL;
}
static inline bool is_acpi_data_node(struct fwnode_handle *fwnode)
{
return false;
}
static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)
{ {
return NULL; return NULL;
} }
...@@ -743,22 +758,21 @@ struct acpi_reference_args { ...@@ -743,22 +758,21 @@ struct acpi_reference_args {
#ifdef CONFIG_ACPI #ifdef CONFIG_ACPI
int acpi_dev_get_property(struct acpi_device *adev, const char *name, int acpi_dev_get_property(struct acpi_device *adev, const char *name,
acpi_object_type type, const union acpi_object **obj); acpi_object_type type, const union acpi_object **obj);
int acpi_dev_get_property_array(struct acpi_device *adev, const char *name, int acpi_node_get_property_reference(struct fwnode_handle *fwnode,
acpi_object_type type, const char *name, size_t index,
const union acpi_object **obj); struct acpi_reference_args *args);
int acpi_dev_get_property_reference(struct acpi_device *adev,
const char *name, size_t index, int acpi_node_prop_get(struct fwnode_handle *fwnode, const char *propname,
struct acpi_reference_args *args); void **valptr);
int acpi_dev_prop_get(struct acpi_device *adev, const char *propname,
void **valptr);
int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val); enum dev_prop_type proptype, void *val);
int acpi_node_prop_read(struct fwnode_handle *fwnode, const char *propname,
enum dev_prop_type proptype, void *val, size_t nval);
int acpi_dev_prop_read(struct acpi_device *adev, const char *propname, int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val, size_t nval); enum dev_prop_type proptype, void *val, size_t nval);
struct acpi_device *acpi_get_next_child(struct device *dev, struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
struct acpi_device *child); struct fwnode_handle *subnode);
#else #else
static inline int acpi_dev_get_property(struct acpi_device *adev, static inline int acpi_dev_get_property(struct acpi_device *adev,
const char *name, acpi_object_type type, const char *name, acpi_object_type type,
...@@ -766,16 +780,17 @@ static inline int acpi_dev_get_property(struct acpi_device *adev, ...@@ -766,16 +780,17 @@ static inline int acpi_dev_get_property(struct acpi_device *adev,
{ {
return -ENXIO; return -ENXIO;
} }
static inline int acpi_dev_get_property_array(struct acpi_device *adev,
const char *name, static inline int acpi_node_get_property_reference(struct fwnode_handle *fwnode,
acpi_object_type type, const char *name, const char *cells_name,
const union acpi_object **obj) size_t index, struct acpi_reference_args *args)
{ {
return -ENXIO; return -ENXIO;
} }
static inline int acpi_dev_get_property_reference(struct acpi_device *adev,
const char *name, const char *cells_name, static inline int acpi_node_prop_get(struct fwnode_handle *fwnode,
size_t index, struct acpi_reference_args *args) const char *propname,
void **valptr)
{ {
return -ENXIO; return -ENXIO;
} }
...@@ -795,6 +810,14 @@ static inline int acpi_dev_prop_read_single(struct acpi_device *adev, ...@@ -795,6 +810,14 @@ static inline int acpi_dev_prop_read_single(struct acpi_device *adev,
return -ENXIO; return -ENXIO;
} }
static inline int acpi_node_prop_read(struct fwnode_handle *fwnode,
const char *propname,
enum dev_prop_type proptype,
void *val, size_t nval)
{
return -ENXIO;
}
static inline int acpi_dev_prop_read(struct acpi_device *adev, static inline int acpi_dev_prop_read(struct acpi_device *adev,
const char *propname, const char *propname,
enum dev_prop_type proptype, enum dev_prop_type proptype,
...@@ -803,12 +826,11 @@ static inline int acpi_dev_prop_read(struct acpi_device *adev, ...@@ -803,12 +826,11 @@ static inline int acpi_dev_prop_read(struct acpi_device *adev,
return -ENXIO; return -ENXIO;
} }
static inline struct acpi_device *acpi_get_next_child(struct device *dev, static inline struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
struct acpi_device *child) struct fwnode_handle *subnode)
{ {
return NULL; return NULL;
} }
#endif #endif
#endif /*_LINUX_ACPI_H*/ #endif /*_LINUX_ACPI_H*/
...@@ -16,6 +16,7 @@ enum fwnode_type { ...@@ -16,6 +16,7 @@ enum fwnode_type {
FWNODE_INVALID = 0, FWNODE_INVALID = 0,
FWNODE_OF, FWNODE_OF,
FWNODE_ACPI, FWNODE_ACPI,
FWNODE_ACPI_DATA,
FWNODE_PDATA, FWNODE_PDATA,
}; };
......
...@@ -40,6 +40,8 @@ int device_property_read_string_array(struct device *dev, const char *propname, ...@@ -40,6 +40,8 @@ int device_property_read_string_array(struct device *dev, const char *propname,
const char **val, size_t nval); const char **val, size_t nval);
int device_property_read_string(struct device *dev, const char *propname, int device_property_read_string(struct device *dev, const char *propname,
const char **val); const char **val);
int device_property_match_string(struct device *dev,
const char *propname, const char *string);
bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname); bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname);
int fwnode_property_read_u8_array(struct fwnode_handle *fwnode, int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,
...@@ -59,6 +61,8 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode, ...@@ -59,6 +61,8 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
size_t nval); size_t nval);
int fwnode_property_read_string(struct fwnode_handle *fwnode, int fwnode_property_read_string(struct fwnode_handle *fwnode,
const char *propname, const char **val); const char *propname, const char **val);
int fwnode_property_match_string(struct fwnode_handle *fwnode,
const char *propname, const char *string);
struct fwnode_handle *device_get_next_child_node(struct device *dev, struct fwnode_handle *device_get_next_child_node(struct device *dev,
struct fwnode_handle *child); struct fwnode_handle *child);
......
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