//[*]----------------------------------------------------------------------------------------------[*]
static void gpio_i2c_send_noack (void)
{
// SDA High
gpio_i2c_set_sda(HIGH); delay_func(DELAY_TIME);
gpio_i2c_set_clk(HIGH); delay_func(DELAY_TIME);
gpio_i2c_set_clk(LOW); delay_func(DELAY_TIME);
}
//[*]----------------------------------------------------------------------------------------------[*]
static void gpio_i2c_send_ack (void)
{
// SDA Low
gpio_i2c_set_sda(LOW); udelay(DELAY_TIME);
gpio_i2c_set_clk(HIGH); udelay(DELAY_TIME);
gpio_i2c_set_clk(LOW); udelay(DELAY_TIME);
}
//[*]----------------------------------------------------------------------------------------------[*]
static void gpio_i2c_start (void)
{
// Setup SDA, CLK output High
gpio_i2c_set_sda(HIGH);
gpio_i2c_set_clk(HIGH);
delay_func(DELAY_TIME);
// SDA low before CLK low
gpio_i2c_set_sda(LOW); delay_func(DELAY_TIME);
gpio_i2c_set_clk(LOW); delay_func(DELAY_TIME);
}
//[*]----------------------------------------------------------------------------------------------[*]
static void gpio_i2c_byte_write (unsigned char wdata)
{
unsigned char cnt, mask;
for(cnt = 0, mask = 0x80; cnt < 8; cnt++, mask >>= 1) {
if(wdata & mask) gpio_i2c_set_sda(HIGH);
else gpio_i2c_set_sda(LOW);
gpio_i2c_set_clk(HIGH); delay_func(DELAY_TIME);
gpio_i2c_set_clk(LOW); delay_func(DELAY_TIME);
}
}
//[*]----------------------------------------------------------------------------------------------[*]
static void gpio_i2c_stop (void)
{
// Setup SDA, CLK output low
gpio_i2c_set_sda(LOW);
gpio_i2c_set_clk(LOW);
delay_func(DELAY_TIME);
// SDA high after CLK high
gpio_i2c_set_clk(HIGH); delay_func(DELAY_TIME);
gpio_i2c_set_sda(HIGH); delay_func(DELAY_TIME);
}
//[*]----------------------------------------------------------------------------------------------[*]
static void gpio_i2c_byte_read (unsigned char *rdata)
{
unsigned char cnt, mask;
gpio_i2c_sda_port_control(GPIO_CON_INPUT);
delay_func(PORT_CHANGE_DELAY_TIME);
for(cnt = 0, mask = 0x80, *rdata = 0; cnt < 8; cnt++, mask >>= 1) {
gpio_i2c_set_clk(HIGH); delay_func(DELAY_TIME);
if(gpio_i2c_get_sda()) *rdata |= mask;
gpio_i2c_set_clk(LOW); delay_func(DELAY_TIME);
}
}
//[*]----------------------------------------------------------------------------------------------[*]
//[*]----------------------------------------------------------------------------------------------[*]
void pmic_init(void)
{
unsigned char rwdata;
gpio_i2c_set_sda(HIGH); gpio_i2c_set_clk(HIGH);
rwdata = 0x08; // reset delay changed : 7sec to 3sec
pmic_write(0x0A, &rwdata, 1);
rwdata = 0x14; // 1.8V Enable
pmic_write(0x53, &rwdata, 1); // EMMC
}
//[*]----------------------------------------------------------------------------------------------[*]
//[*]----------------------------------------------------------------------------------------------[*]
void emmc_pwr_reset(void)
{
unsigned char rwdata;
gpio_i2c_set_sda(HIGH); gpio_i2c_set_clk(HIGH);
rwdata = 0x14; // 1.8V Enable
pmic_write(0x53, &rwdata, 1); // EMMC
rwdata = 0x00; // 1.8V Enable
// pmic_write(0x34, &rwdata, 1); // BUCK7 3.0V
pmic_write(0x36, &rwdata, 1); // BUCK8 3.0V
}
//[*]----------------------------------------------------------------------------------------------[*]
static unsigned char gpio_i2c_chk_ack (void)
{
unsigned char count = 0, ret = 0;
gpio_i2c_set_sda(LOW); delay_func(DELAY_TIME);
gpio_i2c_set_clk(HIGH); delay_func(DELAY_TIME);
gpio_i2c_sda_port_control(GPIO_CON_INPUT);
delay_func(PORT_CHANGE_DELAY_TIME);
while(gpio_i2c_get_sda()) {
if(count++ > 100) { ret = 1; break; }
else delay_func(DELAY_TIME);
}
gpio_i2c_set_clk(LOW); delay_func(DELAY_TIME);
#if defined(DEBUG_GPIO_I2C)
if(ret) DEBUG_MSG(("%s (%d): no ack!!\n",__FUNCTION__, ret));
else DEBUG_MSG(("%s (%d): ack !! \n" ,__FUNCTION__, ret));
#endif
return ret;
}
//[*]----------------------------------------------------------------------------------------------[*]
void hkc1xx_touch_port_init (void)
{
gpio_i2c_set_sda(HIGH); gpio_i2c_set_clk(HIGH);
}
