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/*
* Copyright (c) 2011, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Authors:
* James C. Gualario <james.c.gualario@intel.com>
*
*/
#ifndef _PSB_UMEVENT_H_
#define _PSB_UMEVENT_H_
/**
* required includes
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_core.h>
#include <drm/drm_pciids.h>
#include <linux/spinlock.h>
/**
* event groups for routing to different user mode threads
*
*/
#define DRM_DPST_SOCKET_GROUP_ID 1
#define DRM_HOTPLUG_SOCKET_GROUP_ID 2
#define DRM_HDMI_AUDIO_SOCKET_GROUP 4
#define DRM_HDMI_HDCP_SOCKET_GROUP 8
#define DRM_GFX_SOCKET_GROUPS 15
/**
* event structure managed by kobjects
*
*/
struct umevent_obj {
struct kobject kobj;
struct list_head head;
int data_0_val;
int data_1_val;
int data_2_val;
int data_3_val;
int data_4_val;
int data_5_val;
int data_6_val;
int data_7_val;
};
/**
* event tracking list element
*
*/
struct umevent_list{
struct list_head head;
struct kset *umevent_disp_pool;
spinlock_t list_lock;
};
/**
* to go back and forth between kobjects and their main container
*
*/
#define to_umevent_obj(x) \
container_of(x, struct umevent_obj, kobj)
/**
* event attributes exposed via sysfs
*
*/
struct umevent_attribute {
struct attribute attr;
ssize_t (*show)(struct umevent_obj *any_umevent_obj,
struct umevent_attribute *attr, char *buf);
ssize_t (*store)(struct umevent_obj *any_umevent_obj,
struct umevent_attribute *attr,
const char *buf, size_t count);
};
/**
* to go back and forth between the attribute passed to us by the OS
* and the umevent_attribute
*
*/
#define to_umevent_attr(x) \
container_of(x, struct umevent_attribute, \
attr)
/**
* umevent function prototypes
*
*/
extern struct umevent_obj *psb_create_umevent_obj(const char *name,
struct umevent_list
*list);
extern ssize_t psb_umevent_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf);
extern ssize_t psb_umevent_attr_store(struct kobject *kobj,
struct attribute *attr,
const char *buf, size_t len);
extern ssize_t psb_umevent_attr_show_imp(struct umevent_obj
*any_umevent_obj,
struct umevent_attribute *attr,
char *buf);
extern ssize_t psb_umevent_attr_store_imp(struct umevent_obj
*any_umevent_obj,
struct umevent_attribute *attr,
const char *buf, size_t count);
extern void psb_umevent_cleanup(struct umevent_list *kill_list);
extern int psb_umevent_init(struct kobject *parent_kobj,
struct umevent_list *new_umevent_list,
const char *name);
extern void psb_umevent_init_list(struct umevent_list *list);
extern void psb_umevent_debug_dump_list(struct umevent_list *list);
extern void psb_umevent_add_to_list(struct umevent_list *list,
struct umevent_obj
*umevent_obj_to_add);
extern void psb_umevent_destroy_list(struct umevent_list *list);
extern struct umevent_list *psb_umevent_create_list(void);
extern void psb_umevent_notify(struct umevent_obj *notify_disp_obj);
extern void psb_umevent_notify_gfxsock(struct umevent_obj *notify_disp_obj,
int dst_group_id);
extern void psb_umevent_obj_release(struct kobject *kobj);
extern void psb_umevent_remove_from_list(struct umevent_list *list,
const char *disp_to_remove);
extern void psb_umevent_workqueue_dispatch(int work_type, const char *name,
struct umevent_list *list);
extern void psb_umevent_notify_change(struct umevent_obj *notify_disp_obj);
extern void psb_umevent_notify_change_gfxsock(struct umevent_obj
*notify_disp_obj,
int dst_group_id);
extern struct umevent_obj *psb_umevent_find_obj(const char *name,
struct umevent_list
*list);
/**
* socket function prototypes
*
*/
extern int psb_kobject_uevent(struct kobject *kobj,
enum kobject_action action, int dst_group_id);
extern int psb_kobject_uevent_env(struct kobject *kobj,
enum kobject_action action,
char *envp[], int dst_group_id);
int psb_add_uevent_var(struct kobj_uevent_env *env,
const char *format, ...)
__attribute__((format (printf, 2, 3)));
int psb_kobject_action_type(const char *buf,
size_t count, enum kobject_action *type);
#if defined(CONFIG_NET)
int psb_kobject_uevent_init(void);
#endif
#endif
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