diff options
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/imx/otp_imx.c')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/imx/otp_imx.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/drivers/staging/media/atomisp/i2c/imx/otp_imx.c b/drivers/staging/media/atomisp/i2c/imx/otp_imx.c deleted file mode 100644 index 1ca27c26ef75..000000000000 --- a/drivers/staging/media/atomisp/i2c/imx/otp_imx.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * Copyright (c) 2013 Intel Corporation. All Rights Reserved. - * - * 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, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - */ -#include <linux/bitops.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/init.h> -#include <linux/i2c.h> -#include <linux/io.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <media/v4l2-device.h> -#include <asm/intel-mid.h> -#include "common.h" - -/* Defines for OTP Data Registers */ -#define IMX_OTP_START_ADDR 0x3B04 -#define IMX_OTP_PAGE_SIZE 64 -#define IMX_OTP_READY_REG 0x3B01 -#define IMX_OTP_PAGE_REG 0x3B02 -#define IMX_OTP_MODE_REG 0x3B00 -#define IMX_OTP_PAGE_MAX 20 -#define IMX_OTP_READY_REG_DONE 1 -#define IMX_OTP_READ_ONETIME 32 -#define IMX_OTP_MODE_READ 1 -#define IMX227_OTP_START_ADDR 0x0A04 -#define IMX227_OTP_ENABLE_REG 0x0A00 -#define IMX227_OTP_READY_REG 0x0A01 -#define IMX227_OTP_PAGE_REG 0x0A02 -#define IMX227_OTP_READY_REG_DONE 1 -#define IMX227_OTP_MODE_READ 1 - -static int -imx_read_otp_data(struct i2c_client *client, u16 len, u16 reg, void *val) -{ - struct i2c_msg msg[2]; - u16 data[IMX_SHORT_MAX] = { 0 }; - int err; - - if (len > IMX_BYTE_MAX) { - dev_err(&client->dev, "%s error, invalid data length\n", - __func__); - return -EINVAL; - } - - memset(msg, 0 , sizeof(msg)); - memset(data, 0 , sizeof(data)); - - msg[0].addr = client->addr; - msg[0].flags = 0; - msg[0].len = I2C_MSG_LENGTH; - msg[0].buf = (u8 *)data; - /* high byte goes first */ - data[0] = cpu_to_be16(reg); - - msg[1].addr = client->addr; - msg[1].len = len; - msg[1].flags = I2C_M_RD; - msg[1].buf = (u8 *)data; - - err = i2c_transfer(client->adapter, msg, 2); - if (err != 2) { - if (err >= 0) - err = -EIO; - goto error; - } - - memcpy(val, data, len); - return 0; - -error: - dev_err(&client->dev, "read from offset 0x%x error %d", reg, err); - return err; -} - -static int imx_read_otp_reg_array(struct i2c_client *client, u16 size, u16 addr, - u8 *buf) -{ - u16 index; - int ret; - - for (index = 0; index + IMX_OTP_READ_ONETIME <= size; - index += IMX_OTP_READ_ONETIME) { - ret = imx_read_otp_data(client, IMX_OTP_READ_ONETIME, - addr + index, &buf[index]); - if (ret) - return ret; - } - return 0; -} - -void *imx_otp_read(struct v4l2_subdev *sd, u8 dev_addr, - u32 start_addr, u32 size) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - u8 *buf; - int ret; - int i; - - buf = devm_kzalloc(&client->dev, size, GFP_KERNEL); - if (!buf) - return ERR_PTR(-ENOMEM); - - for (i = 0; i < IMX_OTP_PAGE_MAX; i++) { - - /*set page NO.*/ - ret = imx_write_reg(client, IMX_8BIT, - IMX_OTP_PAGE_REG, i & 0xff); - if (ret) - goto fail; - - /*set read mode*/ - ret = imx_write_reg(client, IMX_8BIT, - IMX_OTP_MODE_REG, IMX_OTP_MODE_READ); - if (ret) - goto fail; - - /* Reading the OTP data array */ - ret = imx_read_otp_reg_array(client, IMX_OTP_PAGE_SIZE, - IMX_OTP_START_ADDR, buf + i * IMX_OTP_PAGE_SIZE); - if (ret) - goto fail; - } - - return buf; -fail: - /* Driver has failed to find valid data */ - dev_err(&client->dev, "sensor found no valid OTP data\n"); - return ERR_PTR(ret); -} - -void *imx227_otp_read(struct v4l2_subdev *sd, u8 dev_addr, - u32 start_addr, u32 size) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - u8 *buf; - int ret; - int i; - - buf = devm_kzalloc(&client->dev, size, GFP_KERNEL); - if (!buf) - return ERR_PTR(-ENOMEM); - - for (i = 0; i < IMX_OTP_PAGE_MAX; i++) { - - /*set page NO.*/ - ret = imx_write_reg(client, IMX_8BIT, - IMX227_OTP_PAGE_REG, i & 0xff); - if (ret) - goto fail; - - /*set read mode*/ - ret = imx_write_reg(client, IMX_8BIT, - IMX227_OTP_ENABLE_REG, IMX227_OTP_MODE_READ); - if (ret) - goto fail; - - /* Reading the OTP data array */ - ret = imx_read_otp_reg_array(client, IMX_OTP_PAGE_SIZE, - IMX227_OTP_START_ADDR, buf + i * IMX_OTP_PAGE_SIZE); - if (ret) - goto fail; - } - - return buf; -fail: - /* Driver has failed to find valid data */ - dev_err(&client->dev, "sensor found no valid OTP data\n"); - return ERR_PTR(ret); -} - |