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Diffstat (limited to 'drivers/serial/serial_uniphier.c')
-rw-r--r--drivers/serial/serial_uniphier.c64
1 files changed, 32 insertions, 32 deletions
diff --git a/drivers/serial/serial_uniphier.c b/drivers/serial/serial_uniphier.c
index e8a1608b99..a6bd27facf 100644
--- a/drivers/serial/serial_uniphier.c
+++ b/drivers/serial/serial_uniphier.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012-2014 Panasonic Corporation
+ * Copyright (C) 2012-2015 Panasonic Corporation
* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
*
* SPDX-License-Identifier: GPL-2.0+
@@ -13,31 +13,25 @@
#include <serial.h>
#include <fdtdec.h>
-#define UART_REG(x) \
- u8 x; \
- u8 postpad_##x[3];
-
/*
* Note: Register map is slightly different from that of 16550.
*/
struct uniphier_serial {
- UART_REG(rbr); /* 0x00 */
- UART_REG(ier); /* 0x04 */
- UART_REG(iir); /* 0x08 */
- UART_REG(fcr); /* 0x0c */
- u8 mcr; /* 0x10 */
- u8 lcr;
- u16 __postpad;
- UART_REG(lsr); /* 0x14 */
- UART_REG(msr); /* 0x18 */
- u32 __none1;
- u32 __none2;
- u16 dlr;
- u16 __postpad2;
+ u32 rx; /* In: Receive buffer */
+#define tx rx /* Out: Transmit buffer */
+ u32 ier; /* Interrupt Enable Register */
+ u32 iir; /* In: Interrupt ID Register */
+ u32 char_fcr; /* Charactor / FIFO Control Register */
+ u32 lcr_mcr; /* Line/Modem Control Register */
+#define LCR_SHIFT 8
+#define LCR_MASK (0xff << (LCR_SHIFT))
+ u32 lsr; /* In: Line Status Register */
+ u32 msr; /* In: Modem Status Register */
+ u32 __rsv0;
+ u32 __rsv1;
+ u32 dlr; /* Divisor Latch Register */
};
-#define thr rbr
-
struct uniphier_serial_private_data {
struct uniphier_serial __iomem *membase;
};
@@ -52,11 +46,9 @@ static int uniphier_serial_setbrg(struct udevice *dev, int baudrate)
const unsigned int mode_x_div = 16;
unsigned int divisor;
- writeb(UART_LCR_WLEN8, &port->lcr);
-
divisor = DIV_ROUND_CLOSEST(plat->uartclk, mode_x_div * baudrate);
- writew(divisor, &port->dlr);
+ writel(divisor, &port->dlr);
return 0;
}
@@ -65,20 +57,20 @@ static int uniphier_serial_getc(struct udevice *dev)
{
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
- if (!(readb(&port->lsr) & UART_LSR_DR))
+ if (!(readl(&port->lsr) & UART_LSR_DR))
return -EAGAIN;
- return readb(&port->rbr);
+ return readl(&port->rx);
}
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))
+ if (!(readl(&port->lsr) & UART_LSR_THRE))
return -EAGAIN;
- writeb(c, &port->thr);
+ writel(c, &port->tx);
return 0;
}
@@ -88,21 +80,29 @@ 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;
+ return readl(&port->lsr) & UART_LSR_DR;
else
- return !(readb(&port->lsr) & UART_LSR_THRE);
+ return !(readl(&port->lsr) & UART_LSR_THRE);
}
static int uniphier_serial_probe(struct udevice *dev)
{
+ u32 tmp;
struct uniphier_serial_private_data *priv = dev_get_priv(dev);
struct uniphier_serial_platform_data *plat = dev_get_platdata(dev);
+ struct uniphier_serial __iomem *port;
- priv->membase = map_sysmem(plat->base, sizeof(struct uniphier_serial));
-
- if (!priv->membase)
+ port = map_sysmem(plat->base, sizeof(struct uniphier_serial));
+ if (!port)
return -ENOMEM;
+ priv->membase = port;
+
+ tmp = readl(&port->lcr_mcr);
+ tmp &= ~LCR_MASK;
+ tmp |= UART_LCR_WLEN8 << LCR_SHIFT;
+ writel(tmp, &port->lcr_mcr);
+
return 0;
}
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