* SPDX-License-Identifier: GPL-2.0+
*/
-#include <common.h>
+#include <linux/serial_reg.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <dm/device.h>
#define thr rbr
-/*
- * These are the definitions for the Line Control Register
- */
-#define UART_LCR_WLS_8 0x03 /* 8 bit character length */
-
-/*
- * These are the definitions for the Line Status Register
- */
-#define UART_LSR_DR 0x01 /* Data ready */
-#define UART_LSR_THRE 0x20 /* Xmit holding register empty */
-
struct uniphier_serial_private_data {
struct uniphier_serial __iomem *membase;
};
#define uniphier_serial_port(dev) \
((struct uniphier_serial_private_data *)dev_get_priv(dev))->membase
-int uniphier_serial_setbrg(struct udevice *dev, int baudrate)
+static 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);
+ writeb(UART_LCR_WLEN8, &port->lcr);
divisor = DIV_ROUND_CLOSEST(plat->uartclk, mode_x_div * baudrate);
return 0;
}
-int uniphier_serial_probe(struct udevice *dev)
+static int uniphier_serial_pending(struct udevice *dev, bool input)
+{
+ struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
+
+ if (input)
+ return readb(&port->lsr) & UART_LSR_DR;
+ else
+ return !(readb(&port->lsr) & UART_LSR_THRE);
+}
+
+static int uniphier_serial_probe(struct udevice *dev)
{
struct uniphier_serial_private_data *priv = dev_get_priv(dev);
struct uniphier_serial_platform_data *plat = dev_get_platdata(dev);
return 0;
}
-int uniphier_serial_remove(struct udevice *dev)
+static int uniphier_serial_remove(struct udevice *dev)
{
unmap_sysmem(uniphier_serial_port(dev));
.setbrg = uniphier_serial_setbrg,
.getc = uniphier_serial_getc,
.putc = uniphier_serial_putc,
+ .pending = uniphier_serial_pending,
};
U_BOOT_DRIVER(uniphier_serial) = {