![Cristian Sicilia](/assets/img/avatar_default.png)
Some parameters are aligned with parentheses. Some parentheses was opened at end of line. Signed-off-by: Cristian Sicilia <sicilia.cristian@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
243 lines
6.6 KiB
C
243 lines
6.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Greybus operations
|
|
*
|
|
* Copyright 2015-2016 Google Inc.
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include "audio_manager.h"
|
|
#include "audio_manager_private.h"
|
|
|
|
#define to_gb_audio_module_attr(x) \
|
|
container_of(x, struct gb_audio_manager_module_attribute, attr)
|
|
#define to_gb_audio_module(x) \
|
|
container_of(x, struct gb_audio_manager_module, kobj)
|
|
|
|
struct gb_audio_manager_module_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr,
|
|
char *buf);
|
|
ssize_t (*store)(struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr,
|
|
const char *buf, size_t count);
|
|
};
|
|
|
|
static ssize_t gb_audio_module_attr_show(struct kobject *kobj,
|
|
struct attribute *attr, char *buf)
|
|
{
|
|
struct gb_audio_manager_module_attribute *attribute;
|
|
struct gb_audio_manager_module *module;
|
|
|
|
attribute = to_gb_audio_module_attr(attr);
|
|
module = to_gb_audio_module(kobj);
|
|
|
|
if (!attribute->show)
|
|
return -EIO;
|
|
|
|
return attribute->show(module, attribute, buf);
|
|
}
|
|
|
|
static ssize_t gb_audio_module_attr_store(struct kobject *kobj,
|
|
struct attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct gb_audio_manager_module_attribute *attribute;
|
|
struct gb_audio_manager_module *module;
|
|
|
|
attribute = to_gb_audio_module_attr(attr);
|
|
module = to_gb_audio_module(kobj);
|
|
|
|
if (!attribute->store)
|
|
return -EIO;
|
|
|
|
return attribute->store(module, attribute, buf, len);
|
|
}
|
|
|
|
static const struct sysfs_ops gb_audio_module_sysfs_ops = {
|
|
.show = gb_audio_module_attr_show,
|
|
.store = gb_audio_module_attr_store,
|
|
};
|
|
|
|
static void gb_audio_module_release(struct kobject *kobj)
|
|
{
|
|
struct gb_audio_manager_module *module = to_gb_audio_module(kobj);
|
|
|
|
pr_info("Destroying audio module #%d\n", module->id);
|
|
/* TODO -> delete from list */
|
|
kfree(module);
|
|
}
|
|
|
|
static ssize_t gb_audio_module_name_show(
|
|
struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "%s", module->desc.name);
|
|
}
|
|
|
|
static struct gb_audio_manager_module_attribute gb_audio_module_name_attribute =
|
|
__ATTR(name, 0664, gb_audio_module_name_show, NULL);
|
|
|
|
static ssize_t gb_audio_module_vid_show(
|
|
struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "%d", module->desc.vid);
|
|
}
|
|
|
|
static struct gb_audio_manager_module_attribute gb_audio_module_vid_attribute =
|
|
__ATTR(vid, 0664, gb_audio_module_vid_show, NULL);
|
|
|
|
static ssize_t gb_audio_module_pid_show(
|
|
struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "%d", module->desc.pid);
|
|
}
|
|
|
|
static struct gb_audio_manager_module_attribute gb_audio_module_pid_attribute =
|
|
__ATTR(pid, 0664, gb_audio_module_pid_show, NULL);
|
|
|
|
static ssize_t gb_audio_module_intf_id_show(
|
|
struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "%d", module->desc.intf_id);
|
|
}
|
|
|
|
static struct gb_audio_manager_module_attribute
|
|
gb_audio_module_intf_id_attribute =
|
|
__ATTR(intf_id, 0664, gb_audio_module_intf_id_show, NULL);
|
|
|
|
static ssize_t gb_audio_module_ip_devices_show(
|
|
struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "0x%X", module->desc.ip_devices);
|
|
}
|
|
|
|
static struct gb_audio_manager_module_attribute
|
|
gb_audio_module_ip_devices_attribute =
|
|
__ATTR(ip_devices, 0664, gb_audio_module_ip_devices_show, NULL);
|
|
|
|
static ssize_t gb_audio_module_op_devices_show(
|
|
struct gb_audio_manager_module *module,
|
|
struct gb_audio_manager_module_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "0x%X", module->desc.op_devices);
|
|
}
|
|
|
|
static struct gb_audio_manager_module_attribute
|
|
gb_audio_module_op_devices_attribute =
|
|
__ATTR(op_devices, 0664, gb_audio_module_op_devices_show, NULL);
|
|
|
|
static struct attribute *gb_audio_module_default_attrs[] = {
|
|
&gb_audio_module_name_attribute.attr,
|
|
&gb_audio_module_vid_attribute.attr,
|
|
&gb_audio_module_pid_attribute.attr,
|
|
&gb_audio_module_intf_id_attribute.attr,
|
|
&gb_audio_module_ip_devices_attribute.attr,
|
|
&gb_audio_module_op_devices_attribute.attr,
|
|
NULL, /* need to NULL terminate the list of attributes */
|
|
};
|
|
|
|
static struct kobj_type gb_audio_module_type = {
|
|
.sysfs_ops = &gb_audio_module_sysfs_ops,
|
|
.release = gb_audio_module_release,
|
|
.default_attrs = gb_audio_module_default_attrs,
|
|
};
|
|
|
|
static void send_add_uevent(struct gb_audio_manager_module *module)
|
|
{
|
|
char name_string[128];
|
|
char vid_string[64];
|
|
char pid_string[64];
|
|
char intf_id_string[64];
|
|
char ip_devices_string[64];
|
|
char op_devices_string[64];
|
|
|
|
char *envp[] = {
|
|
name_string,
|
|
vid_string,
|
|
pid_string,
|
|
intf_id_string,
|
|
ip_devices_string,
|
|
op_devices_string,
|
|
NULL
|
|
};
|
|
|
|
snprintf(name_string, 128, "NAME=%s", module->desc.name);
|
|
snprintf(vid_string, 64, "VID=%d", module->desc.vid);
|
|
snprintf(pid_string, 64, "PID=%d", module->desc.pid);
|
|
snprintf(intf_id_string, 64, "INTF_ID=%d", module->desc.intf_id);
|
|
snprintf(ip_devices_string, 64, "I/P DEVICES=0x%X",
|
|
module->desc.ip_devices);
|
|
snprintf(op_devices_string, 64, "O/P DEVICES=0x%X",
|
|
module->desc.op_devices);
|
|
|
|
kobject_uevent_env(&module->kobj, KOBJ_ADD, envp);
|
|
}
|
|
|
|
int gb_audio_manager_module_create(
|
|
struct gb_audio_manager_module **module,
|
|
struct kset *manager_kset,
|
|
int id, struct gb_audio_manager_module_descriptor *desc)
|
|
{
|
|
int err;
|
|
struct gb_audio_manager_module *m;
|
|
|
|
m = kzalloc(sizeof(*m), GFP_ATOMIC);
|
|
if (!m)
|
|
return -ENOMEM;
|
|
|
|
/* Initialize the node */
|
|
INIT_LIST_HEAD(&m->list);
|
|
|
|
/* Set the module id */
|
|
m->id = id;
|
|
|
|
/* Copy the provided descriptor */
|
|
memcpy(&m->desc, desc, sizeof(*desc));
|
|
|
|
/* set the kset */
|
|
m->kobj.kset = manager_kset;
|
|
|
|
/*
|
|
* Initialize and add the kobject to the kernel. All the default files
|
|
* will be created here. As we have already specified a kset for this
|
|
* kobject, we don't have to set a parent for the kobject, the kobject
|
|
* will be placed beneath that kset automatically.
|
|
*/
|
|
err = kobject_init_and_add(&m->kobj, &gb_audio_module_type, NULL, "%d",
|
|
id);
|
|
if (err) {
|
|
pr_err("failed initializing kobject for audio module #%d\n",
|
|
id);
|
|
kobject_put(&m->kobj);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Notify the object was created
|
|
*/
|
|
send_add_uevent(m);
|
|
|
|
*module = m;
|
|
pr_info("Created audio module #%d\n", id);
|
|
return 0;
|
|
}
|
|
|
|
void gb_audio_manager_module_dump(struct gb_audio_manager_module *module)
|
|
{
|
|
pr_info("audio module #%d name=%s vid=%d pid=%d intf_id=%d i/p devices=0x%X o/p devices=0x%X\n",
|
|
module->id,
|
|
module->desc.name,
|
|
module->desc.vid,
|
|
module->desc.pid,
|
|
module->desc.intf_id,
|
|
module->desc.ip_devices,
|
|
module->desc.op_devices);
|
|
}
|