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/*
* Copyright 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/*
* Includes
*/
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <asm/mach-types.h>
#include <linux/gpio.h>
#include <mach/iomux-mx6q.h>
#include <mach/gpio.h>
#include <linux/gpio.h>
#include <linux/rtc.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/regulator/consumer.h>
#include "../../../arch/arm/mach-mx6/ntx_hwconfig.h"
#include "../../../arch/arm/mach-mx6/board-mx6sl_ntx.h"
#define GDEBUG 0
#include <linux/gallen_dbg.h>
extern volatile NTX_HWCONFIG *gptHWCFG;
struct i2c_client *g_ht68f20_i2c_client;
struct regulator *g_fl_regulator;
int ht68f20_read_reg(unsigned char reg)
{
int ret;
unsigned char buffer[10];
if(g_ht68f20_i2c_client) {
struct i2c_msg msg[] =
{
{.addr = g_ht68f20_i2c_client->addr, .flags = 0, .len = 1, .buf = ®,},
{.addr = g_ht68f20_i2c_client->addr, .flags = I2C_M_RD, .len = 1, .buf = buffer,},
};
if(0 > i2c_transfer(g_ht68f20_i2c_client->adapter, msg, 2))
printk ("[%s-%d] i2c_transfer failed...\n", __func__, __LINE__);
}
else {
printk("%s():ht68f20 not ready !\n",__FUNCTION__);
buffer[0]=0;
}
return buffer[0];
}
int ht68f20_write_reg(unsigned char reg, int value)
{
int iRet;
unsigned char buffer[10];
if(g_ht68f20_i2c_client) {
struct i2c_msg msg[] =
{
{.addr = g_ht68f20_i2c_client->addr, .flags = 0, .len = 2, .buf = buffer,},
};
buffer[0] = reg;
buffer[1] = value & 0xFF;
iRet = i2c_transfer(g_ht68f20_i2c_client->adapter, msg, 1);
}
else {
printk("%s():ht68f20 not ready !\n",__FUNCTION__);
iRet = -ENODEV;
}
return iRet;
}
unsigned short ht68f20_fw_version(void)
{
return ht68f20_read_reg(0);
}
void ht68f20_enable(int isEnable)
{
static int s_is_enabled;
if (g_fl_regulator && (s_is_enabled != isEnable)) {
s_is_enabled = isEnable;
printk ("[%s-%d] regulator %s\n",__func__,__LINE__,(isEnable)?"on":"off");
if (isEnable) {
regulator_enable (g_fl_regulator);
msleep (200);
}
else
regulator_disable (g_fl_regulator);
}
}
static __devinit int ht68f20_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int err = 0;
g_fl_regulator = regulator_get(&client->dev, "vdd_pwm");
if (IS_ERR(g_fl_regulator)) {
printk("%s, regulator \"vdd_pwm\" not registered.(%d)\n", __func__, g_fl_regulator);
}
else {
printk("%s, regulator found\n", __func__);
}
if(!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
{
printk("%s, functionality check failed\n", __func__);
return -1;
}
g_ht68f20_i2c_client = client;
return 0;
}
static __devexit int ht68f20_i2c_remove(struct i2c_client *client)
{
return 0;
}
static const struct i2c_device_id ht68f20_id[] = {
{"ht68f20", 0},
{},
};
MODULE_DEVICE_TABLE(i2c, ht68f20_id);
static struct i2c_driver ht68f20_i2c_driver = {
.driver = {
.name = "ht68f20",
.owner = THIS_MODULE,
},
.probe = ht68f20_i2c_probe,
.remove = __devexit_p(ht68f20_i2c_remove),
.id_table = ht68f20_id,
};
static int __init ht68f20_init(void)
{
return i2c_add_driver(&ht68f20_i2c_driver);
}
static void __exit ht68f20_exit(void)
{
i2c_del_driver(&ht68f20_i2c_driver);
}
module_init(ht68f20_init);
module_exit(ht68f20_exit);
MODULE_DESCRIPTION("HT68F20 driver");
MODULE_AUTHOR("Netronix Inc.");
MODULE_LICENSE("GPL");
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