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/*
* nvc_debugfs.c - nvc camera debugfs
*
* Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <media/nvc_debugfs.h>
#include <linux/module.h>
static int i2ca_get(void *data, u64 *val)
{
struct nvc_debugfs_info *info = (struct nvc_debugfs_info *)(data);
*val = (u64)info->i2c_reg;
return 0;
}
static int i2ca_set(void *data, u64 val)
{
struct nvc_debugfs_info *info = (struct nvc_debugfs_info *)(data);
if (val > info->i2c_addr_limit) {
dev_err(&info->i2c_client->dev, "ERR:%s out of range\n",
__func__);
return -EIO;
}
info->i2c_reg = (u16) val;
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(i2ca_fops, i2ca_get, i2ca_set, "0x%02llx\n");
static int i2cr_get(void *data, u64 *val)
{
u8 temp = 0;
struct nvc_debugfs_info *info = (struct nvc_debugfs_info *)(data);
if (info->i2c_rd8(info->i2c_client, info->i2c_reg, &temp)) {
dev_err(&info->i2c_client->dev, "ERR:%s failed\n", __func__);
return -EIO;
}
*val = (u64)temp;
return 0;
}
static int i2cr_set(void *data, u64 val)
{
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(i2cr_fops, i2cr_get, i2cr_set, "0x%02llx\n");
static int i2cw_get(void *data, u64 *val)
{
return 0;
}
static int i2cw_set(void *data, u64 val)
{
struct nvc_debugfs_info *info = (struct nvc_debugfs_info *)(data);
val &= 0xFF;
if (info->i2c_wr8(info->i2c_client, info->i2c_reg, val)) {
dev_err(&info->i2c_client->dev, "ERR:%s failed\n", __func__);
return -EIO;
}
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(i2cw_fops, i2cw_get, i2cw_set, "0x%02llx\n");
int nvc_debugfs_init(struct nvc_debugfs_info *info)
{
dev_dbg(&info->i2c_client->dev, "%s", __func__);
info->i2c_reg = 0;
info->debugfs_root = debugfs_create_dir(info->name, NULL);
if (!info->debugfs_root)
goto err_out;
if (!debugfs_create_file("i2ca", S_IRUGO | S_IWUSR,
info->debugfs_root, info, &i2ca_fops))
goto err_out;
if (!debugfs_create_file("i2cr", S_IRUGO,
info->debugfs_root, info, &i2cr_fops))
goto err_out;
if (!debugfs_create_file("i2cw", S_IWUSR,
info->debugfs_root, info, &i2cw_fops))
goto err_out;
return 0;
err_out:
dev_err(&info->i2c_client->dev, "ERROR:%s failed", __func__);
if (info->debugfs_root)
debugfs_remove_recursive(info->debugfs_root);
return -ENOMEM;
}
int nvc_debugfs_remove(struct nvc_debugfs_info *info)
{
if (info->debugfs_root)
debugfs_remove_recursive(info->debugfs_root);
return 0;
}
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