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/*
* Copyright (C) 2012 Spreadtrum Communications Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <video/sprd_isp.h>
#include "compat_isp_drv.h"
struct compat_isp_capability {
uint32_t isp_id;
uint32_t index;
compat_uptr_t property_param;
};
struct compat_isp_io_param {
uint32_t isp_id;
uint32_t sub_block;
uint32_t property;
compat_uptr_t property_param;
};
struct compat_isp_reg_param {
compat_ulong_t reg_param;
uint32_t counts;
};
struct compat_isp_reg_bits {
compat_ulong_t reg_addr;
compat_ulong_t reg_value;
};
#define COMPAT_ISP_IO_CAPABILITY _IOR(ISP_IO_MAGIC, 0, struct compat_isp_capability)
#define COMPAT_ISP_IO_READ _IOR(ISP_IO_MAGIC, 2, struct compat_isp_reg_param)
#define COMPAT_ISP_IO_WRITE _IOW(ISP_IO_MAGIC, 3, struct compat_isp_reg_param)
#define CAMPAT_ISP_IO_CFG_PARAM _IOWR(ISP_IO_MAGIC, 7, struct compat_isp_io_param)
#define CAMPAT_ISP_REG_READ _IOR(ISP_IO_MAGIC, 8, struct compat_isp_reg_bits)
static int compat_get_capability_param(
struct compat_isp_capability __user *data32,
struct isp_capability __user *data)
{
int err = 0;
uint32_t tmp;
compat_uptr_t parm;
err = get_user(tmp, &data32->isp_id);
err |= put_user(tmp, &data->isp_id);
err |= get_user(tmp, &data32->index);
err |= put_user(tmp, &data->index);
err |= get_user(parm, &data32->property_param);
err |= put_user(parm, &data->property_param);
return err;
}
static int compat_get_cfg_param(
struct compat_isp_io_param __user *data32,
struct isp_io_param __user *data)
{
int err =0;
uint32_t tmp;
compat_uptr_t parm;
err = get_user(tmp, &data32->isp_id);
err |= put_user(tmp, &data->isp_id);
err |= get_user(tmp, &data32->sub_block);
err |= put_user(tmp, &data->sub_block);
err |= get_user(tmp, &data32->property);
err |= put_user(tmp, &data->property);
err |= get_user(parm, &data32->property_param);
err |= put_user(parm, &data->property_param);
return err;
}
static int compat_get_rw_param(
struct compat_isp_reg_param __user *data32,
struct isp_reg_param __user *data)
{
int err = 0;
compat_ulong_t addr;
uint32_t cnt;
err = get_user(addr, &data32->reg_param);
err |= put_user(addr, &data->reg_param);
err |= get_user(cnt, &data32->counts);
err |= put_user(cnt, &data->counts);
return err;
}
static int compat_get_rw_param_detail(
struct isp_reg_param __user *data)
{
int err = 0;
int i;
int cnt;
compat_ulong_t addr;
compat_ulong_t val;
struct compat_isp_reg_bits __user *data32;
struct isp_reg_bits __user *reg_data;
struct isp_reg_bits __user *data_tmp;
if (NULL == data) {
printk("compat_get_rw_param_detail: data is NULL.\n");
return -EFAULT;
}
cnt = data->counts;
data32 = compat_ptr(data->reg_param);
reg_data = (struct isp_reg_bits __user *)((unsigned long)data + sizeof(struct isp_reg_param));
data->reg_param = reg_data;
if (NULL == reg_data) {
printk("compat_get_rw_param_detail: reg_data is NULL.\n");
return -EFAULT;
}
data_tmp = reg_data;
for (i = 0; i < cnt; i++) {
err = get_user(addr, &data32->reg_addr);
err |= put_user(addr, &data_tmp->reg_addr);
err |= get_user(val, &data32->reg_value);
err |= put_user(val, &data_tmp->reg_value);
if (err) {
printk("compat_get_rw_param_detail: failed to get register addr&val cnt %d err %d\n", cnt, err);
break;
}
data32++;
data_tmp++;
}
return err;
}
static int compat_put_read_param(
struct compat_isp_reg_param __user *data32,
struct isp_reg_param __user *data)
{
int err = 0;
int i;
int cnt;
compat_ulong_t val;
struct compat_isp_reg_bits __user *reg_data32;
struct isp_reg_bits __user *reg_data;
cnt = data->counts;
reg_data32 = (struct compat_isp_reg_bits __user *)data32->reg_param;
reg_data = (struct isp_reg_bits __user *)data->reg_param;
for (i = 0; i < cnt; i++) {
err = get_user(val, ®_data->reg_value);
err |= put_user(val, ®_data32->reg_value);
if (err) {
printk("compat_put_read_param: failed to get register val err %d\n", err);
break;
}
reg_data32++;
reg_data++;
}
return err;
}
long compat_isp_ioctl(struct file *file, unsigned int cmd, unsigned long param)
{
long ret;
int err = 0;
void __user *up = compat_ptr(param);
if (!file->f_op || !file->f_op->unlocked_ioctl)
return -ENOTTY;
switch (cmd) {
case ISP_IO_IRQ:
case ISP_IO_RST:
case ISP_IO_STOP:
case ISP_IO_INT:
ret = file->f_op->unlocked_ioctl(file, cmd, (unsigned long)up);
break;
case COMPAT_ISP_IO_CAPABILITY:
{
struct compat_isp_capability __user *data32;
struct isp_capability __user *data;
data32 = compat_ptr(param);
data = compat_alloc_user_space(sizeof(*data));
if (NULL == data) {
printk("compat_isp_ioctl: failed to compat_alloc_user_space.\n");
return -EFAULT;
}
err = compat_get_capability_param(data32, data);
if (err) {
printk("compat_isp_ioctl: failed to get capability param.\n");
return err;
}
ret = file->f_op->unlocked_ioctl(file, ISP_IO_CAPABILITY, (unsigned long)data);
break;
}
case COMPAT_ISP_IO_READ:
{
struct compat_isp_reg_param __user *data32;
struct isp_reg_param __user *data;
uint32_t cnt;
data32 = compat_ptr(param);
err = get_user(cnt, &data32->counts);
data = compat_alloc_user_space(sizeof(struct isp_reg_param) + cnt*sizeof(struct isp_reg_bits));
if (NULL == data) {
printk("compat_isp_ioctl: failed to compat_alloc_user_space.\n");
return -EFAULT;
}
err = compat_get_rw_param(data32, data);
if (err) {
printk("compat_isp_ioctl: failed to get isp_reg_param.\n");
return err;
}
err = compat_get_rw_param_detail(data);
if (err) {
printk("compat_isp_ioctl: failed to get isp_reg_param detail.\n");
return err;
}
ret = file->f_op->unlocked_ioctl(file, ISP_IO_READ, (unsigned long)data);
err = compat_put_read_param(data32, data);
ret = ret ? ret : err;
break;
}
case CAMPAT_ISP_REG_READ:
{
struct compat_isp_reg_bits __user *data32;
struct isp_reg_bits __user *data;
unsigned long reg_cnt = 20467;
compat_ulong_t addr;
compat_ulong_t val;
int i;
int err = 0;
data32 = compat_ptr(param);
data = compat_alloc_user_space(reg_cnt * sizeof(struct isp_reg_bits));
if (NULL == data) {
printk("compat_isp_ioctl: CAMPAT_ISP_REG_READ:failed to compat_alloc_user_space.\n");
return -EFAULT;
}
ret = file->f_op->unlocked_ioctl(file, ISP_REG_READ, (unsigned long)data);
for (i = 0; i < reg_cnt; i++) {
err = get_user(val, &data->reg_value);
err |= put_user(val, &data32->reg_value);
if (err) {
printk("compat_put_read_param: CAMPAT_ISP_REG_READ:failed to get reg_value%d\n", err);
break;
}
err = get_user(val, &data->reg_addr);
err |= put_user(val, &data32->reg_addr);
if (err) {
printk("compat_put_read_param: CAMPAT_ISP_REG_READ:failed to get reg_addr%d\n", err);
break;
}
data32++;
data++;
}
ret = ret ? ret : err;
break;
}
case COMPAT_ISP_IO_WRITE:
{
struct compat_isp_reg_param __user *data32;
struct isp_reg_param __user *data;
uint32_t cnt;
data32 = compat_ptr(param);
err = get_user(cnt, &data32->counts);
if (err) {
printk("compat_isp_ioctl: failed to get register count.\n");
return err;
}
data = compat_alloc_user_space(sizeof(struct isp_reg_param) + cnt*sizeof(struct isp_reg_bits));
if (NULL == data) {
printk("compat_isp_ioctl: failed to compat_alloc_user_space.\n");
return -EFAULT;
}
err = compat_get_rw_param(data32, data);
if (err) {
printk("compat_isp_ioctl: failed to get isp_reg_param.\n");
return err;
}
err = compat_get_rw_param_detail(data);
if (err) {
printk("compat_isp_ioctl: failed to get isp_reg_param detail.\n");
return err;
}
ret = file->f_op->unlocked_ioctl(file, ISP_IO_WRITE, (unsigned long)data);
break;
}
case CAMPAT_ISP_IO_CFG_PARAM:
{
struct compat_isp_io_param __user *data32;
struct isp_io_param __user *data;
data32 = compat_ptr(param);
data = compat_alloc_user_space(sizeof(*data));
if (NULL == data) {
printk("compat_isp_ioctl: failed to compat_alloc_user_space.\n");
return -EFAULT;
}
err = compat_get_cfg_param(data32, data);
if (err) {
printk("compat_isp_ioctl: failed to get cfg param.\n");
return err;
}
ret = file->f_op->unlocked_ioctl(file, ISP_IO_CFG_PARAM, (unsigned long)data);
break;
}
default:
printk("compat_isp_ioctl, don't support cmd 0x%x", cmd);
break;
}
exit:
return ret;
}
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