diff options
Diffstat (limited to 'drivers/staging/cdv/drv/psb_umevents.h')
| -rw-r--r-- | drivers/staging/cdv/drv/psb_umevents.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/staging/cdv/drv/psb_umevents.h b/drivers/staging/cdv/drv/psb_umevents.h new file mode 100644 index 000000000000..0b9b57d863a6 --- /dev/null +++ b/drivers/staging/cdv/drv/psb_umevents.h @@ -0,0 +1,161 @@ +/* + * 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 |