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/*****************************************************************************
Copyright(c) 2009 FCI Inc. All Rights Reserved
File name : fc8100_i2c.c
Description : fc8100 host interface
History :
----------------------------------------------------------------------
2009/09/29 bruce initial
*******************************************************************************/
#include <linux/module.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <plat/gpio-cfg.h>
#include <plat/gpio-core.h>
#include <mach/regs-gpio.h>
#include <mach/regs-clock.h>
#include "fci_types.h"
#include "fci_oal.h"
#define FC8100_I2C_ADDR 0x77
#define I2C_M_FCIRD 1
#define I2C_M_FCIWR 0
#define I2C_MAX_SEND_LENGTH 300
struct i2c_ts_driver{
struct i2c_client *client;
struct input_dev *input_dev;
struct work_struct work;
};
struct i2c_client *fc8100_i2c;
struct i2c_driver fc8100_i2c_driver;
static int i2c_bb_read(HANDLE hDevice, u16 addr, u8 *data, u16 length);
static int fc8100_i2c_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id)
{
fc8100_i2c = i2c_client;
i2c_set_clientdata(i2c_client, NULL);
return 0;
}
static int fc8100_remove(struct i2c_client *client)
{
return 0;
}
static const struct i2c_device_id fc8100_id[] = {
{ "isdbti2c", 0 },
{ },
};
struct i2c_driver fc8100_i2c_driver = {
.driver = {
.name = "fc8100_i2c",
.owner = THIS_MODULE,
},
.probe = fc8100_i2c_probe,
.remove = fc8100_remove,
.id_table = fc8100_id,
};
static int i2c_init(void)
{
int res;
printk("fc8100_i2c_drv_init ENTER...\n");
fc8100_i2c = kzalloc(sizeof(struct i2c_ts_driver), GFP_KERNEL);
if (fc8100_i2c == NULL)
return -ENOMEM;
res = i2c_add_driver(&fc8100_i2c_driver);
return res;
}
static int i2c_deinit(void)
{
printk("fc8100_i2c_drv_deinit ENTER...\n");
i2c_del_driver(&fc8100_i2c_driver);
return 0;
}
static int i2c_bb_read(HANDLE hDevice, u16 addr, u8 *data, u16 length)
{
int res;
struct i2c_msg rmsg[2];
unsigned char i2c_data[1];
rmsg[0].addr = fc8100_i2c->addr;
rmsg[0].flags = I2C_M_FCIWR;
rmsg[0].len = 1;
rmsg[0].buf = i2c_data;
i2c_data[0] = addr & 0xff;
rmsg[1].addr = fc8100_i2c->addr;
rmsg[1].flags = I2C_M_FCIRD;
rmsg[1].len = length;
rmsg[1].buf = data;
res = i2c_transfer(fc8100_i2c->adapter, &rmsg[0], 2);
/* return status */
if (res >= 0)
res = 0;
return res;
}
static int i2c_bb_write(HANDLE hDevice, u16 addr, u8 *data, u16 length)
{
int res;
struct i2c_msg wmsg;
unsigned char i2c_data[I2C_MAX_SEND_LENGTH];
if (length+1 > I2C_MAX_SEND_LENGTH) {
printk(".......error");
return -ENODEV;
}
wmsg.addr = fc8100_i2c->addr;
wmsg.flags = I2C_M_FCIWR;
wmsg.len = length + 1;
wmsg.buf = i2c_data;
i2c_data[0] = addr & 0xff;
memcpy(&i2c_data[1], data, length);
res = i2c_transfer(fc8100_i2c->adapter, &wmsg, 1);
/* return status */
if (res >= 0)
res = 0;
return res;
}
static int i2c_rf_read(HANDLE hDevice, u8 addr, u8 *data, u8 length)
{
int res;
struct i2c_msg rmsg[3];
unsigned char i2c_rp_data[2];
unsigned char i2c_data[1];
/* printk("i2c_rf_read ENTER addr : %x, length : %d\n", addr, length); */
rmsg[0].addr = fc8100_i2c->addr;
rmsg[0].flags = I2C_M_FCIWR;
rmsg[0].len = 2;
rmsg[0].buf = i2c_rp_data;
i2c_rp_data[0] = 0x02;
i2c_rp_data[1] = 0x01;
rmsg[1].addr = fc8100_i2c->addr;
rmsg[1].flags = I2C_M_FCIWR;
rmsg[1].len = 1;
rmsg[1].buf = i2c_data;
i2c_data[0] = addr & 0xff;
rmsg[2].addr = fc8100_i2c->addr;
rmsg[2].flags = I2C_M_FCIRD;
rmsg[2].len = length;
rmsg[2].buf = data;
res = i2c_transfer(fc8100_i2c->adapter, &rmsg[0], 3);
/* printk("i2c_rf_read data : %x\n", data[0]); */
/* return status */
if (res >= 0)
res = 0;
return res;
}
static int i2c_rf_write(HANDLE hDevice, u8 addr, u8 *data, u8 length)
{
int res;
struct i2c_msg wmsg[2];
unsigned char i2c_rp_data[2];
unsigned char i2c_data[I2C_MAX_SEND_LENGTH];
/* printk("i2c_rf_write ENTER addr : %x, data : %x, length : %d\n", addr, data[0], length); */
if (length+1 > I2C_MAX_SEND_LENGTH) {
printk(".......error");
return -ENODEV;
}
wmsg[0].addr = fc8100_i2c->addr;
wmsg[0].flags = I2C_M_FCIWR;
wmsg[0].len = 2;
wmsg[0].buf = i2c_rp_data;
i2c_rp_data[0] = 0x02;
i2c_rp_data[1] = 0x01;
wmsg[1].addr = fc8100_i2c->addr;
wmsg[1].flags = I2C_M_FCIWR;
wmsg[1].len = length+1;
wmsg[1].buf = i2c_data;
i2c_data[0] = addr & 0xff;
memcpy(&i2c_data[1], data, length);
res = i2c_transfer(fc8100_i2c->adapter, &wmsg[0], 2);
/* return status */
if (res >= 0)
res = 0;
return res;
}
int fc8100_i2c_init(HANDLE hDevice, u16 param1, u16 param2)
{
int res;
res = i2c_init();
return res;
}
int fc8100_i2c_byteread(HANDLE hDevice, u16 addr, u8 *data)
{
int res = BBM_NOK;
/* PRINTF(0, "fc8100_i2c_byteread 0x%x\n", addr); */
res = i2c_bb_read(hDevice, addr, (u8 *)data, 1);
return res;
}
int fc8100_i2c_wordread(HANDLE hDevice, u16 addr, u16 *data)
{
int res = BBM_NOK;
/* PRINTF(0, "fc8100_i2c_wordread 0x%x\n", addr); */
res = i2c_bb_read(hDevice, addr, (u8 *)data, 2);
return res;
}
int fc8100_i2c_longread(HANDLE hDevice, u16 addr, u32 *data)
{
int res = BBM_NOK;
/* PRINTF(0, "fc8100_i2c_longread 0x%x\n", addr); */
res = i2c_bb_read(hDevice, addr, (u8 *)data, 4);
return res;
}
int fc8100_i2c_bulkread(HANDLE hDevice, u16 addr, u8 *data, u16 size)
{
int res = BBM_NOK;
/* PRINTF(0, "fc8100_i2c_bulkread 0x%x\n", addr); */
res = i2c_bb_read(hDevice, addr, (u8 *)data, size);
return res;
}
int fc8100_i2c_bytewrite(HANDLE hDevice, u16 addr, u8 data)
{
int res = BBM_NOK;
res = i2c_bb_write(hDevice, addr, (u8 *)&data, 1);
return res;
}
int fc8100_i2c_wordwrite(HANDLE hDevice, u16 addr, u16 data)
{
int res = BBM_NOK;
res = i2c_bb_write(hDevice, addr, (u8 *)&data, 2);
return res;
}
int fc8100_i2c_longwrite(HANDLE hDevice, u16 addr, u32 data)
{
int res = BBM_NOK;
res = i2c_bb_write(hDevice, addr, (u8 *)&data, 4);
return res;
}
int fc8100_i2c_bulkwrite(HANDLE hDevice, u16 addr, u8 *data, u16 size)
{
int res = BBM_NOK;
res = i2c_bb_write(hDevice, addr, (u8 *)&data, size);
return res;
}
int fc8100_i2c_dataread(HANDLE hDevice, u16 addr, u8 *data, u16 size)
{
int res = BBM_NOK;
return res;
}
int fc8100_rf_bulkread(HANDLE hDevice, u8 addr, u8 *data, u8 size)
{
int res = BBM_NOK;
res = i2c_rf_read(hDevice, addr, (u8 *)data, size);
return res;
}
int fc8100_rf_bulkwrite(HANDLE hDevice, u8 addr, u8 *data, u8 size)
{
int res = BBM_NOK;
res = i2c_rf_write(hDevice, addr, (u8 *)data, size);
return res;
}
int fc8100_i2c_deinit(HANDLE hDevice)
{
int res = BBM_NOK;
res = i2c_deinit();
return res;
}
int fc8100_spi_init(HANDLE hDevice, u16 param1, u16 param2)
{
return BBM_OK;
}
int fc8100_spi_dataread(HANDLE hDevice, u16 addr, u8 *pBuf, u16 nLength)
{
return BBM_OK;
}
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