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/*
**************************************************************************
** STMicroelectronics **
**************************************************************************
** marco.cali@st.com **
**************************************************************************
* *
* I2C/SPI Communication *
* *
**************************************************************************
**************************************************************************
*/
#include "ftsSoftware.h"
#include "ftsCrossCompile.h"
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <stdarg.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/serio.h>
#include <linux/init.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <linux/ctype.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/power_supply.h>
#include <linux/firmware.h>
#include <linux/regulator/consumer.h>
#include <linux/of_gpio.h>
/* #include <linux/sec_sysfs.h> */
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/spi/spidev.h>
static struct i2c_client *client;
static u16 I2CSAD;
#include "ftsError.h"
#include "ftsHardware.h"
#include "ftsIO.h"
#include "ftsTool.h"
static char tag[8] = "[ FTS ]\0";
int openChannel(struct i2c_client *clt)
{
client = clt;
I2CSAD = clt->addr;
logError(1, "%s openChannel: SAD: %02X\n", tag, I2CSAD);
return OK;
}
struct device *getDev(void)
{
if (client != NULL)
return &(client->dev);
else
return NULL;
}
struct i2c_client *getClient(void)
{
if (client != NULL)
return client;
else
return NULL;
}
int fts_readCmd(u8 *cmd, int cmdLength, u8 *outBuf, int byteToRead)
{
int ret = -1;
int retry = 0;
struct i2c_msg I2CMsg[2];
/* write msg */
I2CMsg[0].addr = (__u16)I2CSAD;
I2CMsg[0].flags = (__u16)0;
I2CMsg[0].len = (__u16)cmdLength;
I2CMsg[0].buf = (__u8 *)cmd;
/* read msg */
I2CMsg[1].addr = (__u16)I2CSAD;
I2CMsg[1].flags = I2C_M_RD;
I2CMsg[1].len = byteToRead;
I2CMsg[1].buf = (__u8 *)outBuf;
if (client == NULL)
return ERROR_I2C_O;
while (retry < I2C_RETRY && ret < OK) {
ret = i2c_transfer(client->adapter, I2CMsg, 2);
if (ret >= OK)
break;
retry++;
msleep(I2C_WAIT_BEFORE_RETRY);
}
if (ret < 0) {
logError(1, "%s fts_readCmd: ERROR %02X\n", tag, ERROR_I2C_R);
return ERROR_I2C_R;
}
return OK;
}
int fts_writeCmd(u8 *cmd, int cmdLength)
{
int ret = -1;
int retry = 0;
struct i2c_msg I2CMsg[2];
I2CMsg[0].addr = (__u16)I2CSAD;
I2CMsg[0].flags = (__u16)0;
I2CMsg[0].len = (__u16)cmdLength;
I2CMsg[0].buf = (__u8 *)cmd;
if (client == NULL)
return ERROR_I2C_O;
while (retry < I2C_RETRY && ret < OK) {
ret = i2c_transfer(client->adapter, I2CMsg, 1);
if (ret >= OK)
break;
retry++;
msleep(I2C_WAIT_BEFORE_RETRY);
/* logError(1, "%s fts_writeCmd: attempt %d\n", tag, retry); */
}
if (ret < 0) {
logError(1, "%s fts_writeCmd: ERROR %02X\n", tag, ERROR_I2C_W);
return ERROR_I2C_W;
}
return OK;
}
int fts_writeFwCmd(u8 *cmd, int cmdLength)
{
int ret = -1;
int ret2 = -1;
int retry = 0;
struct i2c_msg I2CMsg[2];
I2CMsg[0].addr = (__u16)I2CSAD;
I2CMsg[0].flags = (__u16)0;
I2CMsg[0].len = (__u16)cmdLength;
I2CMsg[0].buf = (__u8 *)cmd;
if (client == NULL)
return ERROR_I2C_O;
while (retry < I2C_RETRY && (ret < OK || ret2 < OK)) {
ret = i2c_transfer(client->adapter, I2CMsg, 1);
retry++;
if (ret >= 0) {
ret2 = checkEcho(cmd, cmdLength);
break;
}
msleep(I2C_WAIT_BEFORE_RETRY);
/* logError(1, "%s fts_writeCmd: attempt %d\n", tag, retry); */
}
if (ret < 0) {
logError(1, "%s fts_writeFwCmd: ERROR %02X\n", tag, ERROR_I2C_W);
return ERROR_I2C_W;
}
if (ret2 < OK) {
logError(1, "%s fts_writeFwCmd: check echo ERROR %02X\n", tag, ret2);
return (ret|ERROR_I2C_W);
}
return OK;
}
int writeReadCmd(u8 *writeCmd1, int writeCmdLength, u8 *readCmd1,
int readCmdLength, u8 *outBuf, int byteToRead)
{
int ret = -1;
int retry = 0;
struct i2c_msg I2CMsg[3];
/* write msg */
I2CMsg[0].addr = (__u16)I2CSAD;
I2CMsg[0].flags = (__u16)0;
I2CMsg[0].len = (__u16)writeCmdLength;
I2CMsg[0].buf = (__u8 *)writeCmd1;
/* write msg */
I2CMsg[1].addr = (__u16)I2CSAD;
I2CMsg[1].flags = (__u16)0;
I2CMsg[1].len = (__u16)readCmdLength;
I2CMsg[1].buf = (__u8 *)readCmd1;
/* read msg */
I2CMsg[2].addr = (__u16)I2CSAD;
I2CMsg[2].flags = I2C_M_RD;
I2CMsg[2].len = byteToRead;
I2CMsg[2].buf = (__u8 *)outBuf;
if (client == NULL)
return ERROR_I2C_O;
while (retry < I2C_RETRY && ret < OK) {
ret = i2c_transfer(client->adapter, I2CMsg, 3);
if (ret >= OK)
break;
retry++;
msleep(I2C_WAIT_BEFORE_RETRY);
}
if (ret < 0) {
logError(1, "%s writeReadCmd: ERROR %02X\n", tag, ERROR_I2C_WR);
return ERROR_I2C_WR;
}
return OK;
}
int readCmdU16(u8 cmd, u16 address, u8 *outBuf, int byteToRead, int hasDummyByte)
{
int remaining = byteToRead;
int toRead = 0;
u8 rCmd[3] = { cmd, 0x00, 0x00 };
u8 *buff = (u8 *)kmalloc((READ_CHUNK + 1)*sizeof(u8), GFP_KERNEL);
if (buff == NULL) {
logError(1, "%s readCmdU16: ERROR %02X\n", tag, ERROR_ALLOC);
return ERROR_ALLOC;
}
while (remaining > 0) {
if (remaining >= READ_CHUNK) {
toRead = READ_CHUNK;
remaining -= READ_CHUNK;
} else {
toRead = remaining;
remaining = 0;
}
rCmd[1] = (u8)((address & 0xFF00) >> 8);
rCmd[2] = (u8)(address & 0xFF);
if (hasDummyByte) {
if (fts_readCmd(rCmd, 3, buff, toRead + 1) < 0) {
logError(1, "%s readCmdU16: ERROR %02X\n", tag, ERROR_I2C_R);
return ERROR_I2C_R;
}
memcpy(outBuf, buff + 1, toRead);
} else {
if (fts_readCmd(rCmd, 3, buff, toRead) < 0)
return ERROR_I2C_R;
memcpy(outBuf, buff, toRead);
}
address += toRead;
outBuf += toRead;
}
kfree(buff);
return OK;
}
int writeCmdU16(u8 WriteCmd, u16 address, u8 *dataToWrite, int byteToWrite)
{
int remaining = byteToWrite;
int toWrite = 0;
u8 *buff = (u8 *)kmalloc((WRITE_CHUNK + 3)*sizeof(u8), GFP_KERNEL);
if (buff == NULL) {
logError(1, "%s writeCmdU16: ERROR %02X\n", tag, ERROR_ALLOC);
return ERROR_ALLOC;
}
buff[0] = WriteCmd;
while (remaining > 0) {
if (remaining >= WRITE_CHUNK) {
toWrite = WRITE_CHUNK;
remaining -= WRITE_CHUNK;
} else {
toWrite = remaining;
remaining = 0;
}
buff[1] = (u8)((address & 0xFF00) >> 8);
buff[2] = (u8)(address & 0xFF);
memcpy(buff + 3, dataToWrite, toWrite);
if (fts_writeCmd(buff, 3 + toWrite) < 0) {
logError(1, "%s writeCmdU16: ERROR %02\n", tag, ERROR_I2C_W);
return ERROR_I2C_W;
}
address += toWrite;
dataToWrite += toWrite;
}
return OK;
}
int writeCmdU32(u8 writeCmd1, u8 writeCmd2, u32 address, u8 *dataToWrite, int byteToWrite)
{
int remaining = byteToWrite;
int toWrite = 0;
u8 buff1[3] = { writeCmd1, 0x00, 0x00 };
u8 *buff2 = (u8 *)kmalloc((WRITE_CHUNK + 3)*sizeof(u8), GFP_KERNEL);
if (buff2 == NULL) {
logError(1, "%s writeCmdU32: ERROR %02X\n", tag, ERROR_ALLOC);
return ERROR_ALLOC;
}
buff2[0] = writeCmd2;
while (remaining > 0) {
if (remaining >= WRITE_CHUNK) {
toWrite = WRITE_CHUNK;
remaining -= WRITE_CHUNK;
} else {
toWrite = remaining;
remaining = 0;
}
buff1[1] = (u8)((address & 0xFF000000) >> 24);
buff1[2] = (u8)((address & 0x00FF0000) >> 16);
buff2[1] = (u8)((address & 0x0000FF00) >> 8);
buff2[2] = (u8)(address & 0xFF);
memcpy(buff2 + 3, dataToWrite, toWrite);
if (fts_writeCmd(buff1, 3) < 0) {
logError(1, "%s writeCmdU32: ERROR %02X\n", tag, ERROR_I2C_W);
return ERROR_I2C_W;
}
if (fts_writeCmd(buff2, 3 + toWrite) < 0) {
logError(1, "%s writeCmdU32: ERROR %02X\n", tag, ERROR_I2C_W);
return ERROR_I2C_W;
}
address += toWrite;
dataToWrite += toWrite;
}
return OK;
}
int writeReadCmdU32(u8 wCmd, u8 rCmd, u32 address, u8 *outBuf, int byteToRead, int hasDummyByte)
{
int remaining = byteToRead;
int toRead = 0;
u8 reaCmd[3];
u8 wriCmd[3];
u8 *buff = (u8 *)kmalloc((READ_CHUNK + 1)*sizeof(u8), GFP_KERNEL);
if (buff == NULL) {
logError(1, "%s writereadCmd32: ERROR %02X\n", tag, ERROR_ALLOC);
return ERROR_ALLOC;
}
reaCmd[0] = rCmd;
wriCmd[0] = wCmd;
while (remaining > 0) {
if (remaining >= READ_CHUNK) {
toRead = READ_CHUNK;
remaining -= READ_CHUNK;
} else {
toRead = remaining;
remaining = 0;
}
wriCmd[1] = (u8)((address & 0xFF000000) >> 24);
wriCmd[2] = (u8)((address & 0x00FF0000) >> 16);
reaCmd[1] = (u8)((address & 0x0000FF00) >> 8);
reaCmd[2] = (u8)(address & 0x000000FF);
if (hasDummyByte) {
if (writeReadCmd(wriCmd, 3, reaCmd, 3, buff, toRead + 1) < 0) {
logError(1, "%s writeCmdU32: ERROR %02X\n", tag, ERROR_I2C_WR);
return ERROR_I2C_WR;
}
memcpy(outBuf, buff + 1, toRead);
} else {
if (writeReadCmd(wriCmd, 3, reaCmd, 3, buff, toRead) < 0)
return ERROR_I2C_WR;
memcpy(outBuf, buff, toRead);
}
address += toRead;
outBuf += toRead;
}
return OK;
}
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