/*
* ------------------------------------------------------------
* rs_stop() and rs_start()
*
* This routines are called before setting or resetting tty->stopped.
* They enable or disable transmitter interrupts, as necessary.
* ------------------------------------------------------------
*/
static void rs_stop(struct tty_struct *tty)
{
struct s3c3410_serial *info = (struct s3c3410_serial *) tty->driver_data;
unsigned long flags = 0;
if (serial_paranoia_check(info, tty->device, "rs_stop"))
return;
save_flags(flags);
cli();
tx_stop();
rx_stop();
restore_flags(flags);
}
static int whitebox_release(struct inode* inode, struct file* filp) {
struct whitebox_user_source *user_source = &whitebox_device->user_source;
struct whitebox_rf_sink *rf_sink = &whitebox_device->rf_sink;
struct whitebox_user_sink *user_sink = &whitebox_device->user_sink;
struct whitebox_rf_source *rf_source = &whitebox_device->rf_source;
d_printk(2, "whitebox release\n");
if (atomic_read(&use_count) != 1) {
d_printk(0, "Device not in use");
return -ENOENT;
}
if (whitebox_device->state == WDS_TX || whitebox_device->state == WDS_TX_STREAMING) {
while (tx_stop(whitebox_device) < 0)
cpu_relax();
}
if (whitebox_device->state == WDS_RX || whitebox_device->state == WDS_RX_STREAMING) {
while (rx_stop(whitebox_device) < 0)
cpu_relax();
}
// Turn off LO
whitebox_device->adf4351_regs[2] |= WA_PD_MASK;
whitebox_gpio_adf4351_write(whitebox_device->platform_data,
whitebox_device->adf4351_regs[2]);
// Disable DAC
whitebox_gpio_dac_disable(whitebox_device->platform_data);
whitebox_rf_sink_free(rf_sink);
whitebox_user_source_free(user_source);
whitebox_rf_source_free(rf_source);
whitebox_user_sink_free(user_sink);
atomic_dec(&use_count);
return 0;
}
