diff options
Diffstat (limited to 'drivers/staging/media/atomisp/i2c/imx/otp_brcc064_e2prom.c')
| -rw-r--r-- | drivers/staging/media/atomisp/i2c/imx/otp_brcc064_e2prom.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/drivers/staging/media/atomisp/i2c/imx/otp_brcc064_e2prom.c b/drivers/staging/media/atomisp/i2c/imx/otp_brcc064_e2prom.c deleted file mode 100644 index b11f90c5960c..000000000000 --- a/drivers/staging/media/atomisp/i2c/imx/otp_brcc064_e2prom.c +++ /dev/null @@ -1,80 +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/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/slab.h> -#include <linux/string.h> -#include <linux/types.h> -#include <media/v4l2-device.h> -#include "common.h" - -/* - * Read EEPROM data from brcc064 and store - * it into a kmalloced buffer. On error return NULL. - * @size: set to the size of the returned EEPROM data. - */ -void *brcc064_otp_read(struct v4l2_subdev *sd, u8 dev_addr, - u32 start_addr, u32 size) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - unsigned int e2prom_i2c_addr = dev_addr >> 1; - static const unsigned int max_read_size = 30; - int addr; - u32 s_addr = start_addr & E2PROM_ADDR_MASK; - unsigned char *buffer; - - buffer = devm_kzalloc(&client->dev, size, GFP_KERNEL); - if (!buffer) - return NULL; - - for (addr = s_addr; addr < size; addr += max_read_size) { - struct i2c_msg msg[2]; - unsigned int i2c_addr = e2prom_i2c_addr; - u16 addr_buf; - int r; - - msg[0].flags = 0; - msg[0].addr = i2c_addr; - addr_buf = cpu_to_be16(addr & 0xFFFF); - msg[0].len = 2; - msg[0].buf = (u8 *)&addr_buf; - - msg[1].addr = i2c_addr; - msg[1].flags = I2C_M_RD; - msg[1].len = min(max_read_size, size - addr); - msg[1].buf = &buffer[addr]; - - r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); - if (r != ARRAY_SIZE(msg)) { - dev_err(&client->dev, "read failed at 0x%03x\n", addr); - return NULL; - } - } - return buffer; - -} - - |