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path: root/drivers/serial/lpc32xx_hsuart.c
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Diffstat (limited to 'drivers/serial/lpc32xx_hsuart.c')
-rw-r--r--drivers/serial/lpc32xx_hsuart.c71
1 files changed, 48 insertions, 23 deletions
diff --git a/drivers/serial/lpc32xx_hsuart.c b/drivers/serial/lpc32xx_hsuart.c
index 8ce3382..536fd46 100644
--- a/drivers/serial/lpc32xx_hsuart.c
+++ b/drivers/serial/lpc32xx_hsuart.c
@@ -22,12 +22,14 @@
#include <asm/arch/clk.h>
#include <asm/arch/uart.h>
#include <asm/io.h>
+#include <serial.h>
+#include <linux/compiler.h>
DECLARE_GLOBAL_DATA_PTR;
static struct hsuart_regs *hsuart = (struct hsuart_regs *)HS_UART_BASE;
-static void lpc32xx_hsuart_set_baudrate(void)
+static void lpc32xx_serial_setbrg(void)
{
u32 div;
@@ -39,7 +41,7 @@ static void lpc32xx_hsuart_set_baudrate(void)
writel(div, &hsuart->rate);
}
-static int lpc32xx_hsuart_getc(void)
+static int lpc32xx_serial_getc(void)
{
while (!(readl(&hsuart->level) & HSUART_LEVEL_RX))
/* NOP */;
@@ -47,7 +49,7 @@ static int lpc32xx_hsuart_getc(void)
return readl(&hsuart->rx) & HSUART_RX_DATA;
}
-static void lpc32xx_hsuart_putc(const char c)
+static void lpc32xx_serial_putc(const char c)
{
writel(c, &hsuart->tx);
@@ -56,7 +58,7 @@ static void lpc32xx_hsuart_putc(const char c)
/* NOP */;
}
-static int lpc32xx_hsuart_tstc(void)
+static int lpc32xx_serial_tstc(void)
{
if (readl(&hsuart->level) & HSUART_LEVEL_RX)
return 1;
@@ -64,49 +66,72 @@ static int lpc32xx_hsuart_tstc(void)
return 0;
}
-static void lpc32xx_hsuart_init(void)
+static int lpc32xx_serial_init(void)
{
- lpc32xx_hsuart_set_baudrate();
+ lpc32xx_serial_setbrg();
/* Disable hardware RTS and CTS flow control, set up RX and TX FIFO */
writel(HSUART_CTRL_TMO_16 | HSUART_CTRL_HSU_OFFSET(20) |
HSUART_CTRL_HSU_RX_TRIG_32 | HSUART_CTRL_HSU_TX_TRIG_0,
&hsuart->ctrl);
+ return 0;
}
-void serial_setbrg(void)
+static void lpc32xx_serial_puts(const char *s)
{
- return lpc32xx_hsuart_set_baudrate();
+ while (*s)
+ serial_putc(*s++);
}
-void serial_putc(const char c)
+#ifdef CONFIG_SERIAL_MULTI
+static struct serial_device lpc32xx_serial_drv = {
+ .name = "lpc32xx_serial",
+ .start = lpc32xx_serial_init,
+ .stop = NULL,
+ .setbrg = lpc32xx_serial_setbrg,
+ .putc = lpc32xx_serial_putc,
+ .puts = lpc32xx_serial_puts,
+ .getc = lpc32xx_serial_getc,
+ .tstc = lpc32xx_serial_tstc,
+};
+
+void lpc32xx_serial_initialize(void)
{
- lpc32xx_hsuart_putc(c);
+ serial_register(&lpc32xx_serial_drv);
+}
- /* If \n, also do \r */
- if (c == '\n')
- lpc32xx_hsuart_putc('\r');
+__weak struct serial_device *default_serial_console(void)
+{
+ return &lpc32xx_serial_drv;
+}
+#else
+int serial_init(void)
+{
+ return lpc32xx_serial_init();
}
-int serial_getc(void)
+void serial_setbrg(void)
{
- return lpc32xx_hsuart_getc();
+ lpc32xx_serial_setbrg();
}
-void serial_puts(const char *s)
+void serial_putc(const char c)
{
- while (*s)
- serial_putc(*s++);
+ lpc32xx_serial_putc(c);
}
-int serial_tstc(void)
+void serial_puts(const char *s)
{
- return lpc32xx_hsuart_tstc();
+ lpc32xx_serial_puts(s);
}
-int serial_init(void)
+int serial_getc(void)
{
- lpc32xx_hsuart_init();
+ return lpc32xx_serial_getc();
+}
- return 0;
+int serial_tstc(void)
+{
+ return lpc32xx_serial_tstc();
}
+#endif