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authorRabin Vincent <rabin.vincent@stericsson.com>2010-05-05 09:23:07 +0530
committerWolfgang Denk <wd@denx.de>2010-11-30 22:06:33 +0100
commit72d5e44c95062bf1e25d28c71abbc875d232d393 (patch)
treefe78585d2d9e6283faa10319ca403813ea96b4d1 /drivers/serial/serial_pl01x.c
parentb0bc8b70ff74501fd7a6e42013a4a7ea05cf6ade (diff)
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pl01x: use C structs and readl/writel
Use C structs for registers, and use readl/writel instead of custom accessors. Acked-by: Michael Brandt <michael.brandt@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Diffstat (limited to 'drivers/serial/serial_pl01x.c')
-rw-r--r--drivers/serial/serial_pl01x.c50
1 files changed, 30 insertions, 20 deletions
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);
}