//[*]----------------------------------------------------------------------------------------------[*]
int hkc1xx_touch_write (unsigned char addr, unsigned char *wdata, unsigned char wsize)
{
unsigned char cnt, ack;
// start
gpio_i2c_start();
gpio_i2c_byte_write(TOUCH_WR_ADDR); // i2c address
if((ack = gpio_i2c_chk_ack())) {
#if defined(DEBUG_GPIO_I2C)
DEBUG_MSG(("%s [write address] : no ack\n",__FUNCTION__));
#endif
goto write_stop;
}
gpio_i2c_byte_write(addr); // register
if((ack = gpio_i2c_chk_ack())) {
#if defined(DEBUG_GPIO_I2C)
DEBUG_MSG(("%s [write register] : no ack\n",__FUNCTION__));
#endif
}
if(wsize) {
for(cnt = 0; cnt < wsize; cnt++) {
gpio_i2c_byte_write(wdata[cnt]);
if((ack = gpio_i2c_chk_ack())) {
#if defined(DEBUG_GPIO_I2C)
DEBUG_MSG(("%s [write register] : no ack\n",__FUNCTION__));
#endif
goto write_stop;
}
}
}
write_stop:
#if defined(CONFIG_TOUCHSCREEN_HKDKC1XX) || defined(CONFIG_TOUCHSCREEN_ODROID_T)
if(wsize) gpio_i2c_stop();
#else // defined(CONFIG_TOUCHSCREEN_ODROID_S)
gpio_i2c_stop();
#endif
// if(ack) printk("%s : error ack(%d)\n", __FUNCTION__, ack);
#if defined(DEBUG_GPIO_I2C)
DEBUG_MSG(("%s : %d\n", __FUNCTION__, ack));
#endif
return ack;
}
//[*]----------------------------------------------------------------------------------------------[*]
int pmic_read (unsigned char reg, unsigned char *rdata, unsigned char rsize)
{
unsigned char ack, cnt;
// register pointer write
if(pmic_write(reg, NULL, 0)) goto read_stop;
// restart
gpio_i2c_start();
gpio_i2c_byte_write(MAX77687_ADDR + I2C_READ); // i2c address
if((ack = gpio_i2c_chk_ack())) goto read_stop;
for(cnt=0; cnt < rsize; cnt++) {
gpio_i2c_byte_read(&rdata[cnt]);
if(cnt == rsize -1) gpio_i2c_send_noack();
else gpio_i2c_send_ack();
}
read_stop:
gpio_i2c_stop();
return ack;
}
//[*]----------------------------------------------------------------------------------------------[*]
int pmic_write (unsigned char reg, unsigned char *wdata, unsigned char wsize)
{
unsigned char cnt, ack;
// start
gpio_i2c_start();
gpio_i2c_byte_write(MAX77687_ADDR + I2C_WRITE); // i2c address
if((ack = gpio_i2c_chk_ack())) goto write_stop;
gpio_i2c_byte_write(reg); // register
if((ack = gpio_i2c_chk_ack())) goto write_stop;
if(wsize) {
for(cnt = 0; cnt < wsize; cnt++) {
gpio_i2c_byte_write(wdata[cnt]);
if((ack = gpio_i2c_chk_ack())) goto write_stop;
}
}
write_stop:
if(wsize) gpio_i2c_stop();
return ack;
}
static uint32_t ks103_read_reg_i2c(uint8_t addr, uint8_t reg)
{
uint8_t data_read;
/* 需要读取的寄存器 */
gpio_i2c_start();
gpio_i2c_write(addr);
if(gpio_i2c_ack() != 0){ /* 无应答 */
return KS103_DATA_ERROR;
}
gpio_i2c_write(reg);
if(gpio_i2c_ack() != 0){ /* 无应答 */
return KS103_DATA_ERROR;
}
/* 读取寄存器的数值 */
gpio_i2c_start();
gpio_i2c_write(addr + 1);
if(gpio_i2c_ack() != 0){ /* 无应答 */
return KS103_DATA_ERROR;
}
data_read = gpio_i2c_read();
gpio_i2c_ack();
gpio_i2c_stop();
return (uint32_t) data_read;
}
//[*]----------------------------------------------------------------------------------------------[*]
int hkc1xx_touch_read (unsigned char *rdata, unsigned char rsize)
{
unsigned char ack, cnt;
// start
gpio_i2c_start();
gpio_i2c_byte_write(TOUCH_RD_ADDR); // i2c address
if((ack = gpio_i2c_chk_ack())) {
#if defined(DEBUG_GPIO_I2C)
DEBUG_MSG(("%s [write address] : no ack\n",__FUNCTION__));
#endif
goto read_stop;
}
for(cnt=0; cnt < rsize; cnt++) {
gpio_i2c_byte_read(&rdata[cnt]);
if(cnt == rsize -1) gpio_i2c_send_noack();
else gpio_i2c_send_ack();
}
read_stop:
gpio_i2c_stop();
// if(ack) printk("%s : error ack(%d)\n", __FUNCTION__, ack);
#if defined(DEBUG_GPIO_I2C)
DEBUG_MSG(("%s : %d\n", __FUNCTION__, ack));
#endif
return ack;
}
static uint32_t ks103_send_cmd_i2c(uint8_t addr, uint8_t reg, uint8_t cmd)
{
gpio_i2c_start();
gpio_i2c_write(addr);
if(gpio_i2c_ack() != 0){ /* 无应答 */
return KS103_DATA_ERROR;
}
gpio_i2c_write(reg);
if(gpio_i2c_ack() != 0){ /* 无应答 */
return KS103_DATA_ERROR;
}
gpio_i2c_write(cmd);
gpio_i2c_ack();
gpio_i2c_stop();
return 0;
}
