mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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dc3d3f1c49
it's basically also provided by ingenic and nativly based on 2.6.27, adjusted to fit into the OpenWrt-environment
93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
/*
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* linux/drivers/misc/jz_sensor.c
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*
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* Virtual device driver with tricky appoach to manage TCSM
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*
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* Copyright (C) 2006 Ingenic Semiconductor Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/major.h>
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#include <linux/string.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/miscdevice.h>
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#include <linux/fs.h>
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#include <linux/spinlock.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/wakelock.h>
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#include <linux/platform_device.h>
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#include <linux/major.h>
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#include <linux/version.h>
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#include <asm/cacheflush.h>
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#include <asm/mipsregs.h>
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#include <asm/mipsmtregs.h>
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#include <asm/pgtable.h>
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#include <asm/irq.h>
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#include <asm/thread_info.h>
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#include <asm/uaccess.h>
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#include <asm/jzsoc.h>
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#include "jz_cim.h"
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#include "jz_sensor.h"
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unsigned int i2c_addr = 0x60;
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unsigned int i2c_clk = 100000;
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/* I2C ops to init senser */
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void sensor_write_reg(unsigned char reg, unsigned char val)
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{
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i2c_open();
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i2c_setclk(i2c_clk);
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i2c_write((i2c_addr >> 1), &val, reg, 1);
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i2c_close();
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}
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int sensor_write_reg16(unsigned short reg, unsigned char val)
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{
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int ret;
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i2c_open();
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i2c_setclk(i2c_clk);
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ret = i2c_write_16(i2c_addr >> 1, &val, reg, 1);
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i2c_close();
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return ret;
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}
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unsigned char sensor_read_reg(unsigned char reg)
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{
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unsigned char val;
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i2c_open();
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i2c_setclk(i2c_clk);
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i2c_read((i2c_addr >> 1), &val, reg, 1);
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i2c_close();
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return val;
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}
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/*
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* Get sensor register through i2c bus
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*/
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unsigned char sensor_read_reg16(unsigned short reg)
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{
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unsigned char val;
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i2c_open();
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i2c_setclk(i2c_clk);
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i2c_read_16(i2c_addr >> 1, &val, reg, 1);
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i2c_close();
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return val;
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}
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