static int uniphier_serial_getc(struct udevice *dev)
{
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
if (!(readb(&port->lsr) & UART_LSR_DR))
return -EAGAIN;
return readb(&port->rbr);
}
static int uniphier_serial_pending(struct udevice *dev, bool input)
{
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
if (input)
return readl(&port->lsr) & UART_LSR_DR;
else
return !(readl(&port->lsr) & UART_LSR_THRE);
}
static int uniphier_serial_putc(struct udevice *dev, const char c)
{
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
if (!(readb(&port->lsr) & UART_LSR_THRE))
return -EAGAIN;
writeb(c, &port->thr);
return 0;
}
static int uniphier_serial_setbrg(struct udevice *dev, int baudrate)
{
struct uniphier_serial_private_data *priv = dev_get_priv(dev);
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
const unsigned int mode_x_div = 16;
unsigned int divisor;
divisor = DIV_ROUND_CLOSEST(priv->uartclk, mode_x_div * baudrate);
writel(divisor, &port->dlr);
return 0;
}
int uniphier_serial_setbrg(struct udevice *dev, int baudrate)
{
struct uniphier_serial_platform_data *plat = dev_get_platdata(dev);
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
const unsigned int mode_x_div = 16;
unsigned int divisor;
writeb(UART_LCR_WLS_8, &port->lcr);
divisor = DIV_ROUND_CLOSEST(plat->uartclk, mode_x_div * baudrate);
writew(divisor, &port->dlr);
return 0;
}
int uniphier_serial_remove(struct udevice *dev)
{
unmap_sysmem(uniphier_serial_port(dev));
return 0;
}