summaryrefslogtreecommitdiff
path: root/drivers/serial
diff options
context:
space:
mode:
authorWolfgang Denk <wd@denx.de>2010-12-22 21:16:17 +0100
committerWolfgang Denk <wd@denx.de>2010-12-22 21:16:17 +0100
commitcdc51c294ad33879c4e57edf4c9d2155381b1d59 (patch)
treefc1c3f2c23a2507e91358a6a6dfa881965bf603f /drivers/serial
parent250ef029844be2cb98635f265359396866d1749f (diff)
parentb8339e2b9f32663411dba0f48e25b23f542d53bc (diff)
downloadu-boot-imx-cdc51c294ad33879c4e57edf4c9d2155381b1d59.zip
u-boot-imx-cdc51c294ad33879c4e57edf4c9d2155381b1d59.tar.gz
u-boot-imx-cdc51c294ad33879c4e57edf4c9d2155381b1d59.tar.bz2
Merge branch 'next' of ../next
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/ns16550.c8
-rw-r--r--drivers/serial/serial.c5
-rw-r--r--drivers/serial/serial_pl01x.c50
-rw-r--r--drivers/serial/serial_pl01x.h41
4 files changed, 61 insertions, 43 deletions
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 32f24de..8eeb48f 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -24,9 +24,13 @@
#define serial_in(y) readb(y)
#endif
+#ifndef CONFIG_SYS_NS16550_IER
+#define CONFIG_SYS_NS16550_IER 0x00
+#endif /* CONFIG_SYS_NS16550_IER */
+
void NS16550_init (NS16550_t com_port, int baud_divisor)
{
- serial_out(0x00, &com_port->ier);
+ serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
#if defined(CONFIG_OMAP) && !defined(CONFIG_OMAP3_ZOOM2)
serial_out(0x7, &com_port->mdr1); /* mode select reset TL16C750*/
#endif
@@ -52,7 +56,7 @@ void NS16550_init (NS16550_t com_port, int baud_divisor)
#ifndef CONFIG_NS16550_MIN_FUNCTIONS
void NS16550_reinit (NS16550_t com_port, int baud_divisor)
{
- serial_out(0x00, &com_port->ier);
+ serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
serial_out(UART_LCR_BKSE | UART_LCRVAL, &com_port->lcr);
serial_out(0, &com_port->dll);
serial_out(0, &com_port->dlm);
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
index 1073ac0..cd3439e 100644
--- a/drivers/serial/serial.c
+++ b/drivers/serial/serial.c
@@ -29,9 +29,10 @@
#endif
#ifdef CONFIG_KIRKWOOD
#include <asm/arch/kirkwood.h>
-#endif
-#ifdef CONFIG_ORION5X
+#elif defined(CONFIG_ORION5X)
#include <asm/arch/orion5x.h>
+#elif defined(CONFIG_ARMADA100)
+#include <asm/arch/armada100.h>
#endif
#if defined (CONFIG_SERIAL_MULTI)
diff --git a/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
index c0ae947..5dfcde8 100644
--- a/drivers/serial/serial_pl01x.c
+++ b/drivers/serial/serial_pl01x.c
@@ -47,14 +47,20 @@ static int pl01x_tstc (int portnum);
unsigned int baudrate = CONFIG_BAUDRATE;
DECLARE_GLOBAL_DATA_PTR;
+static struct pl01x_regs *pl01x_get_regs(int portnum)
+{
+ return (struct pl01x_regs *) port[portnum];
+}
+
#ifdef CONFIG_PL010_SERIAL
int serial_init (void)
{
+ struct pl01x_regs *regs = pl01x_get_regs(CONSOLE_PORT);
unsigned int divisor;
/* First, disable everything */
- writel(0x0, port[CONSOLE_PORT] + UART_PL010_CR);
+ writel(0, &regs->pl010_cr);
/* Set baud rate */
switch (baudrate) {
@@ -82,15 +88,14 @@ int serial_init (void)
divisor = UART_PL010_BAUD_38400;
}
- writel(((divisor & 0xf00) >> 8), port[CONSOLE_PORT] + UART_PL010_LCRM);
- writel((divisor & 0xff), port[CONSOLE_PORT] + UART_PL010_LCRL);
+ writel((divisor & 0xf00) >> 8, &regs->pl010_lcrm);
+ writel(divisor & 0xff, &regs->pl010_lcrl);
/* Set the UART to be 8 bits, 1 stop bit, no parity, fifo enabled */
- writel((UART_PL010_LCRH_WLEN_8 | UART_PL010_LCRH_FEN),
- port[CONSOLE_PORT] + UART_PL010_LCRH);
+ writel(UART_PL010_LCRH_WLEN_8 | UART_PL010_LCRH_FEN, &regs->pl010_lcrh);
/* Finally, enable the UART */
- writel((UART_PL010_CR_UARTEN), port[CONSOLE_PORT] + UART_PL010_CR);
+ writel(UART_PL010_CR_UARTEN, &regs->pl010_cr);
return 0;
}
@@ -101,13 +106,14 @@ int serial_init (void)
int serial_init (void)
{
+ struct pl01x_regs *regs = pl01x_get_regs(CONSOLE_PORT);
unsigned int temp;
unsigned int divider;
unsigned int remainder;
unsigned int fraction;
/* First, disable everything */
- writel(0x0, port[CONSOLE_PORT] + UART_PL011_CR);
+ writel(0, &regs->pl011_cr);
/*
* Set baud rate
@@ -121,16 +127,16 @@ int serial_init (void)
temp = (8 * remainder) / baudrate;
fraction = (temp >> 1) + (temp & 1);
- writel(divider, port[CONSOLE_PORT] + UART_PL011_IBRD);
- writel(fraction, port[CONSOLE_PORT] + UART_PL011_FBRD);
+ writel(divider, &regs->pl011_ibrd);
+ writel(fraction, &regs->pl011_fbrd);
/* Set the UART to be 8 bits, 1 stop bit, no parity, fifo enabled */
- writel((UART_PL011_LCRH_WLEN_8 | UART_PL011_LCRH_FEN),
- port[CONSOLE_PORT] + UART_PL011_LCRH);
+ writel(UART_PL011_LCRH_WLEN_8 | UART_PL011_LCRH_FEN,
+ &regs->pl011_lcrh);
/* Finally, enable the UART */
- writel((UART_PL011_CR_UARTEN | UART_PL011_CR_TXE | UART_PL011_CR_RXE),
- port[CONSOLE_PORT] + UART_PL011_CR);
+ writel(UART_PL011_CR_UARTEN | UART_PL011_CR_TXE | UART_PL011_CR_RXE,
+ &regs->pl011_cr);
return 0;
}
@@ -170,28 +176,31 @@ void serial_setbrg (void)
static void pl01x_putc (int portnum, char c)
{
+ struct pl01x_regs *regs = pl01x_get_regs(portnum);
+
/* Wait until there is space in the FIFO */
- while (readl(port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_TXFF)
+ while (readl(&regs->fr) & UART_PL01x_FR_TXFF)
WATCHDOG_RESET();
/* Send the character */
- writel(c, port[portnum] + UART_PL01x_DR);
+ writel(c, &regs->dr);
}
static int pl01x_getc (int portnum)
{
+ struct pl01x_regs *regs = pl01x_get_regs(portnum);
unsigned int data;
/* Wait until there is data in the FIFO */
- while (readl(port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_RXFE)
+ while (readl(&regs->fr) & UART_PL01x_FR_RXFE)
WATCHDOG_RESET();
- data = readl(port[portnum] + UART_PL01x_DR);
+ data = readl(&regs->dr);
/* Check for an error flag */
if (data & 0xFFFFFF00) {
/* Clear the error */
- writel(0xFFFFFFFF, port[portnum] + UART_PL01x_ECR);
+ writel(0xFFFFFFFF, &regs->ecr);
return -1;
}
@@ -200,7 +209,8 @@ static int pl01x_getc (int portnum)
static int pl01x_tstc (int portnum)
{
+ struct pl01x_regs *regs = pl01x_get_regs(portnum);
+
WATCHDOG_RESET();
- return !(readl(port[portnum] + UART_PL01x_FR) &
- UART_PL01x_FR_RXFE);
+ return !(readl(&regs->fr) & UART_PL01x_FR_RXFE);
}
diff --git a/drivers/serial/serial_pl01x.h b/drivers/serial/serial_pl01x.h
index 5f20fdd..b670c24 100644
--- a/drivers/serial/serial_pl01x.h
+++ b/drivers/serial/serial_pl01x.h
@@ -29,10 +29,28 @@
* Definitions common to both PL010 & PL011
*
*/
-#define UART_PL01x_DR 0x00 /* Data read or written from the interface. */
-#define UART_PL01x_RSR 0x04 /* Receive status register (Read). */
-#define UART_PL01x_ECR 0x04 /* Error clear register (Write). */
-#define UART_PL01x_FR 0x18 /* Flag register (Read only). */
+
+#ifndef __ASSEMBLY__
+/*
+ * We can use a combined structure for PL010 and PL011, because they overlap
+ * only in common registers.
+ */
+struct pl01x_regs {
+ u32 dr; /* 0x00 Data register */
+ u32 ecr; /* 0x04 Error clear register (Write) */
+ u32 pl010_lcrh; /* 0x08 Line control register, high byte */
+ u32 pl010_lcrm; /* 0x0C Line control register, middle byte */
+ u32 pl010_lcrl; /* 0x10 Line control register, low byte */
+ u32 pl010_cr; /* 0x14 Control register */
+ u32 fr; /* 0x18 Flag register (Read only) */
+ u32 reserved;
+ u32 ilpr; /* 0x20 IrDA low-power counter register */
+ u32 pl011_ibrd; /* 0x24 Integer baud rate register */
+ u32 pl011_fbrd; /* 0x28 Fractional baud rate register */
+ u32 pl011_lcrh; /* 0x2C Line control register */
+ u32 pl011_cr; /* 0x30 Control register */
+};
+#endif
#define UART_PL01x_RSR_OE 0x08
#define UART_PL01x_RSR_BE 0x04
@@ -50,14 +68,6 @@
* PL010 definitions
*
*/
-#define UART_PL010_LCRH 0x08 /* Line control register, high byte. */
-#define UART_PL010_LCRM 0x0C /* Line control register, middle byte. */
-#define UART_PL010_LCRL 0x10 /* Line control register, low byte. */
-#define UART_PL010_CR 0x14 /* Control register. */
-#define UART_PL010_IIR 0x1C /* Interrupt indentification register (Read). */
-#define UART_PL010_ICR 0x1C /* Interrupt clear register (Write). */
-#define UART_PL010_ILPR 0x20 /* IrDA low power counter register. */
-
#define UART_PL010_CR_LPE (1 << 7)
#define UART_PL010_CR_RTIE (1 << 6)
#define UART_PL010_CR_TIE (1 << 5)
@@ -93,13 +103,6 @@
* PL011 definitions
*
*/
-#define UART_PL011_IBRD 0x24
-#define UART_PL011_FBRD 0x28
-#define UART_PL011_LCRH 0x2C
-#define UART_PL011_CR 0x30
-#define UART_PL011_IMSC 0x38
-#define UART_PL011_PERIPH_ID0 0xFE0
-
#define UART_PL011_LCRH_SPS (1 << 7)
#define UART_PL011_LCRH_WLEN_8 (3 << 5)
#define UART_PL011_LCRH_WLEN_7 (2 << 5)