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/*
* Copyright (C) 2012 Texas Instruments, Inc
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/stat.h>
#include <asm/page.h>
#include <linux/slab.h>
#include "services_headers.h"
#include "pdump_km.h"
#include "sysfs.h"
/* sysfs structures */
struct pvrsrv_attribute {
struct attribute attr;
int sgx_version;
int sgx_revision;
};
static struct pvrsrv_attribute PVRSRVAttr = {
.attr.name = "egl.cfg",
.attr.mode = S_IRUGO,
.sgx_version = SGXCORE,
.sgx_revision = SGX_CORE_REV,
};
/* sysfs read function */
static ssize_t PVRSRVEglCfgShow(struct kobject *kobj, struct attribute *attr,
char *buffer) {
struct pvrsrv_attribute *pvrsrv_attr;
pvrsrv_attr = container_of(attr, struct pvrsrv_attribute, attr);
return snprintf(buffer, PAGE_SIZE, "0 0 android\n0 1 POWERVR_SGX%d_%d",
pvrsrv_attr->sgx_version, pvrsrv_attr->sgx_revision);
}
/* sysfs write function unsupported*/
static ssize_t PVRSRVEglCfgStore(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t size) {
PVR_DPF((PVR_DBG_ERROR, "PVRSRVEglCfgStore not implemented"));
return 0;
}
static struct attribute *pvrsrv_sysfs_attrs[] = {
&PVRSRVAttr.attr,
NULL
};
static const struct sysfs_ops pvrsrv_sysfs_ops = {
.show = PVRSRVEglCfgShow,
.store = PVRSRVEglCfgStore,
};
static struct kobj_type pvrsrv_ktype = {
.sysfs_ops = &pvrsrv_sysfs_ops,
.default_attrs = pvrsrv_sysfs_attrs,
};
/* create sysfs entry /sys/egl/egl.cfg to determine
which gfx libraries to load */
int PVRSRVCreateSysfsEntry(void)
{
struct kobject *egl_cfg_kobject;
int r;
egl_cfg_kobject = kzalloc(sizeof(*egl_cfg_kobject), GFP_KERNEL);
r = kobject_init_and_add(egl_cfg_kobject, &pvrsrv_ktype, NULL, "egl");
if (r) {
PVR_DPF((PVR_DBG_ERROR,
"Failed to create egl.cfg sysfs entry"));
return PVRSRV_ERROR_INIT_FAILURE;
}
return PVRSRV_OK;
}
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