diff options
Diffstat (limited to 'drivers/serial/serial_uniphier.c')
| -rw-r--r-- | drivers/serial/serial_uniphier.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/serial/serial_uniphier.c b/drivers/serial/serial_uniphier.c index 9114b3ed600..6046efb51fe 100644 --- a/drivers/serial/serial_uniphier.c +++ b/drivers/serial/serial_uniphier.c @@ -5,7 +5,7 @@ * 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> @@ -37,17 +37,6 @@ struct uniphier_serial { #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; }; @@ -55,14 +44,14 @@ struct uniphier_serial_private_data { #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); @@ -93,7 +82,17 @@ static int uniphier_serial_putc(struct udevice *dev, const char c) 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); @@ -106,7 +105,7 @@ int uniphier_serial_probe(struct udevice *dev) return 0; } -int uniphier_serial_remove(struct udevice *dev) +static int uniphier_serial_remove(struct udevice *dev) { unmap_sysmem(uniphier_serial_port(dev)); @@ -134,6 +133,7 @@ static const struct dm_serial_ops uniphier_serial_ops = { .setbrg = uniphier_serial_setbrg, .getc = uniphier_serial_getc, .putc = uniphier_serial_putc, + .pending = uniphier_serial_pending, }; U_BOOT_DRIVER(uniphier_serial) = { |