static int _serial_tstc(struct udevice *dev)
{
struct serial_dev_priv *upriv = dev_get_uclass_priv(dev);
/* Read all available chars into the RX buffer */
while (__serial_tstc(dev)) {
upriv->buf[upriv->wr_ptr++] = __serial_getc(dev);
upriv->wr_ptr %= CONFIG_SERIAL_RX_BUFFER_SIZE;
}
return upriv->rd_ptr != upriv->wr_ptr ? 1 : 0;
}
static int _serial_getc(struct udevice *dev)
{
struct serial_dev_priv *upriv = dev_get_uclass_priv(dev);
char val;
if (upriv->rd_ptr == upriv->wr_ptr)
return __serial_getc(dev);
val = upriv->buf[upriv->rd_ptr++];
upriv->rd_ptr %= CONFIG_SERIAL_RX_BUFFER_SIZE;
return val;
}
static int _serial_getc(struct udevice *dev)
{
return __serial_getc(dev);
}