static int __init bus_init(void)
{
struct bit_data *bit = &bit_data;
unsigned long flags;
int ret;
if (machine_is_assabet() || machine_is_pangolin()) {
bit->sda = GPIO_GPIO15;
bit->scl = GPIO_GPIO18;
bit->l3_mode = GPIO_GPIO17;
}
if (machine_is_h3600() || machine_is_h3100()) {
bit->sda = GPIO_GPIO14;
bit->scl = GPIO_GPIO16;
bit->l3_mode = GPIO_GPIO15;
}
if (machine_is_stork()) {
bit->sda = GPIO_GPIO15;
bit->scl = GPIO_GPIO18;
bit->l3_mode = GPIO_GPIO17;
}
if (!bit->sda)
return -ENODEV;
/*
* Default level for L3 mode is low.
* We set SCL and SDA high (i2c idle state).
*/
local_irq_save(flags);
GPDR &= ~(bit->scl | bit->sda);
GPCR = bit->l3_mode | bit->scl | bit->sda;
GPDR |= bit->l3_mode;
local_irq_restore(flags);
if (machine_is_assabet()) {
/*
* Release reset on UCB1300, ADI7171 and UDA1341. We
* need to do this here so that we can communicate on
* the I2C/L3 buses.
*/
ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
mdelay(1);
ASSABET_BCR_clear(ASSABET_BCR_CODEC_RST);
mdelay(1);
ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
}
ret = i2c_init(bit);
if (ret == 0 && bit->l3_mode) {
ret = l3_init(bit);
if (ret)
i2c_exit();
}
return ret;
}
static void __exit bus_exit(void)
{
l3_exit();
i2c_exit();
}
