gsbi_return_t gsbi_init(gsbi_id_t gsbi_id, gsbi_protocol_t protocol)
{
unsigned i = 0;
unsigned qup_apps_ini[] = {
GSBI_APPS_NS_OFFSET, 0xf80b43,
GSBI_APPS_NS_OFFSET, 0xfc095b,
GSBI_APPS_NS_OFFSET, 0xfc015b,
GSBI_APPS_NS_OFFSET, 0xfc005b,
GSBI_APPS_NS_OFFSET, 0xA05,
GSBI_APPS_NS_OFFSET, 0x185,
GSBI_APPS_MD_OFFSET, 0x100fb,
GSBI_APPS_NS_OFFSET, 0xA05,
GSBI_APPS_NS_OFFSET, 0xfc015b,
GSBI_APPS_NS_OFFSET, 0xfc015b,
GSBI_APPS_NS_OFFSET, 0xfc095b,
GSBI_APPS_NS_OFFSET, 0xfc0b5b,
GSBI_APPS_MAX_OFFSET, 0x0
};
gsbi_return_t ret = GSBI_SUCCESS;
writel(0, GSBI_RESET(gsbi_id));
switch (gsbi_id) {
case GSBI_ID_4: {
/* Configure GPIOs 13 - SCL, 12 - SDA, 2mA gpio_en */
gpio_tlmm_config_set(12, GPIO_FUNC_I2C,
GPIO_NO_PULL, GPIO_2MA, 1);
gpio_tlmm_config_set(13, GPIO_FUNC_I2C,
GPIO_NO_PULL, GPIO_2MA, 1);
}
break;
case GSBI_ID_1: {
/* Configure GPIOs 54 - SCL, 53 - SDA, 2mA gpio_en */
gpio_tlmm_config_set(54, GPIO_FUNC_I2C,
GPIO_NO_PULL, GPIO_2MA, 1);
gpio_tlmm_config_set(53, GPIO_FUNC_I2C,
GPIO_NO_PULL, GPIO_2MA, 1);
}
break;
default: {
ret = GSBI_UNSUPPORTED;
goto bail_out;
}
}
/*Select i2c protocol*/
writel((2 << 4), GSBI_CTL(gsbi_id));
//TODO: Make use of clock API when available instead of the hardcoding.
/* Clock set to 24Mhz */
for (i = 0; GSBI_APPS_MAX_OFFSET != qup_apps_ini[i]; i += 2)
writel(qup_apps_ini[i+1],
QUP_APPS_ADDR(gsbi_id, qup_apps_ini[i]));
writel(((1 << 6)|(1 << 4)), GSBI_HCLK_CTL(gsbi_id));
bail_out:
return ret;
}
int blsp_i2c_init_board(blsp_qup_id_t id)
{
switch (id) {
case BLSP_QUP_ID_0:
case BLSP_QUP_ID_1:
case BLSP_QUP_ID_2:
case BLSP_QUP_ID_3:
#if defined(IPQ40XX_I2C0_PINGROUP_1) || defined(IPQ40XX_I2C0_PINGROUP_2)
gpio_tlmm_config_set(SDA_GPIO, GPIO_FUNC_SDA,
GPIO_NO_PULL, GPIO_2MA, 1);
gpio_tlmm_config_set(SCL_GPIO, GPIO_FUNC_SCL,
GPIO_NO_PULL, GPIO_2MA, 1);
#endif /* Pin Group 1 or 2 */
#if defined(IPQ40XX_I2C1_PINGROUP_1)
gpio_tlmm_config_set(SDA_GPIO_I2C1, GPIO_I2C1_FUNC_SDA,
GPIO_NO_PULL, GPIO_2MA, 1);
gpio_tlmm_config_set(SCL_GPIO_I2C1, GPIO_I2C1_FUNC_SCL,
GPIO_NO_PULL, GPIO_2MA, 1);
#endif
break;
default:
return 1;
}
return 0;
}
static int read_gpio(gpio_t gpio_num)
{
gpio_tlmm_config_set(gpio_num, GPIO_FUNC_DISABLE,
GPIO_NO_PULL, GPIO_2MA, GPIO_DISABLE);
udelay(10); /* Should be enough to settle. */
return gpio_get(gpio_num);
}
void board_i2s_gpio_config(void)
{
unsigned i;
unsigned char gpio_config_arr[] = {I2S_SYNC, I2S_CLK, I2S_DOUT};
for (i = 0; i < ARRAY_SIZE(gpio_config_arr); i++) {
gpio_tlmm_config_set(gpio_config_arr[i], GPIO_I2S_FUNC_VAL,
GPIO_NO_PULL, GPIO_16MA, 1);
}
}
void board_dac_gpio_config(void)
{
gpio_tlmm_config_set(DAC_SDMODE, FUNC_SEL_GPIO, GPIO_NO_PULL,
GPIO_16MA, 1);
}
