PXA270: Add support for multiple serial ports.
This patch adds support for multiple serial ports to the PXA target.
FFUART, BTUART and STUART are supported.
Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/cpu/pxa/serial.c b/cpu/pxa/serial.c
index cb3a478..51e7f65 100644
--- a/cpu/pxa/serial.c
+++ b/cpu/pxa/serial.c
@@ -30,11 +30,28 @@
#include <common.h>
#include <watchdog.h>
+#include <serial.h>
#include <asm/arch/pxa-regs.h>
DECLARE_GLOBAL_DATA_PTR;
-void serial_setbrg (void)
+#define FFUART 0
+#define BTUART 1
+#define STUART 2
+
+#ifndef CONFIG_SERIAL_MULTI
+#if defined (CONFIG_FFUART)
+#define UART_INDEX FFUART
+#elif defined (CONFIG_BTUART)
+#define UART_INDEX BTUART
+#elif defined (CONFIG_STUART)
+#define UART_INDEX STUART
+#else
+#error "Bad: you didn't configure serial ..."
+#endif
+#endif
+
+void pxa_setbrg_dev (unsigned int uart_index)
{
unsigned int quot = 0;
@@ -53,63 +70,68 @@
else
hang ();
-#ifdef CONFIG_FFUART
+ switch (uart_index) {
+ case FFUART:
#ifdef CONFIG_CPU_MONAHANS
- CKENA |= CKENA_22_FFUART;
+ CKENA |= CKENA_22_FFUART;
#else
- CKEN |= CKEN6_FFUART;
+ CKEN |= CKEN6_FFUART;
#endif /* CONFIG_CPU_MONAHANS */
- FFIER = 0; /* Disable for now */
- FFFCR = 0; /* No fifos enabled */
+ FFIER = 0; /* Disable for now */
+ FFFCR = 0; /* No fifos enabled */
- /* set baud rate */
- FFLCR = LCR_WLS0 | LCR_WLS1 | LCR_DLAB;
- FFDLL = quot & 0xff;
- FFDLH = quot >> 8;
- FFLCR = LCR_WLS0 | LCR_WLS1;
+ /* set baud rate */
+ FFLCR = LCR_WLS0 | LCR_WLS1 | LCR_DLAB;
+ FFDLL = quot & 0xff;
+ FFDLH = quot >> 8;
+ FFLCR = LCR_WLS0 | LCR_WLS1;
- FFIER = IER_UUE; /* Enable FFUART */
+ FFIER = IER_UUE; /* Enable FFUART */
+ break;
-#elif defined(CONFIG_BTUART)
+ case BTUART:
#ifdef CONFIG_CPU_MONAHANS
- CKENA |= CKENA_21_BTUART;
+ CKENA |= CKENA_21_BTUART;
#else
- CKEN |= CKEN7_BTUART;
+ CKEN |= CKEN7_BTUART;
#endif /* CONFIG_CPU_MONAHANS */
- BTIER = 0;
- BTFCR = 0;
+ BTIER = 0;
+ BTFCR = 0;
- /* set baud rate */
- BTLCR = LCR_DLAB;
- BTDLL = quot & 0xff;
- BTDLH = quot >> 8;
- BTLCR = LCR_WLS0 | LCR_WLS1;
+ /* set baud rate */
+ BTLCR = LCR_DLAB;
+ BTDLL = quot & 0xff;
+ BTDLH = quot >> 8;
+ BTLCR = LCR_WLS0 | LCR_WLS1;
- BTIER = IER_UUE; /* Enable BFUART */
+ BTIER = IER_UUE; /* Enable BFUART */
-#elif defined(CONFIG_STUART)
+ break;
+
+ case STUART:
#ifdef CONFIG_CPU_MONAHANS
- CKENA |= CKENA_23_STUART;
+ CKENA |= CKENA_23_STUART;
#else
- CKEN |= CKEN5_STUART;
+ CKEN |= CKEN5_STUART;
#endif /* CONFIG_CPU_MONAHANS */
- STIER = 0;
- STFCR = 0;
+ STIER = 0;
+ STFCR = 0;
- /* set baud rate */
- STLCR = LCR_DLAB;
- STDLL = quot & 0xff;
- STDLH = quot >> 8;
- STLCR = LCR_WLS0 | LCR_WLS1;
+ /* set baud rate */
+ STLCR = LCR_DLAB;
+ STDLL = quot & 0xff;
+ STDLH = quot >> 8;
+ STLCR = LCR_WLS0 | LCR_WLS1;
- STIER = IER_UUE; /* Enable STUART */
+ STIER = IER_UUE; /* Enable STUART */
+ break;
-#else
-#error "Bad: you didn't configure serial ..."
-#endif
+ default:
+ hang();
+ }
}
@@ -118,9 +140,9 @@
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
-int serial_init (void)
+int pxa_init_dev (unsigned int uart_index)
{
- serial_setbrg ();
+ pxa_setbrg_dev (uart_index);
return (0);
}
@@ -129,26 +151,32 @@
/*
* Output a single byte to the serial port.
*/
-void serial_putc (const char c)
+void pxa_putc_dev (unsigned int uart_index,const char c)
{
-#ifdef CONFIG_FFUART
- /* wait for room in the tx FIFO on FFUART */
- while ((FFLSR & LSR_TEMT) == 0)
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
- FFTHR = c;
-#elif defined(CONFIG_BTUART)
- while ((BTLSR & LSR_TEMT ) == 0 )
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
- BTTHR = c;
-#elif defined(CONFIG_STUART)
- while ((STLSR & LSR_TEMT ) == 0 )
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
- STTHR = c;
-#endif
+ switch (uart_index) {
+ case FFUART:
+ /* wait for room in the tx FIFO on FFUART */
+ while ((FFLSR & LSR_TEMT) == 0)
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+ FFTHR = c;
+ break;
+
+ case BTUART:
+ while ((BTLSR & LSR_TEMT ) == 0 )
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+ BTTHR = c;
+ break;
+
+ case STUART:
+ while ((STLSR & LSR_TEMT ) == 0 )
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+ STTHR = c;
+ break;
+ }
/* If \n, also do \r */
if (c == '\n')
- serial_putc ('\r');
+ pxa_putc_dev (uart_index,'\r');
}
/*
@@ -156,15 +184,17 @@
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
-int serial_tstc (void)
+int pxa_tstc_dev (unsigned int uart_index)
{
-#ifdef CONFIG_FFUART
- return FFLSR & LSR_DR;
-#elif defined(CONFIG_BTUART)
- return BTLSR & LSR_DR;
-#elif defined(CONFIG_STUART)
- return STLSR & LSR_DR;
-#endif
+ switch (uart_index) {
+ case FFUART:
+ return FFLSR & LSR_DR;
+ case BTUART:
+ return BTLSR & LSR_DR;
+ case STUART:
+ return STLSR & LSR_DR;
+ }
+ return -1;
}
/*
@@ -172,27 +202,184 @@
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
-int serial_getc (void)
+int pxa_getc_dev (unsigned int uart_index)
{
-#ifdef CONFIG_FFUART
- while (!(FFLSR & LSR_DR))
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
- return (char) FFRBR & 0xff;
-#elif defined(CONFIG_BTUART)
- while (!(BTLSR & LSR_DR))
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
- return (char) BTRBR & 0xff;
-#elif defined(CONFIG_STUART)
- while (!(STLSR & LSR_DR))
- WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
- return (char) STRBR & 0xff;
-#endif
+ switch (uart_index) {
+ case FFUART:
+ while (!(FFLSR & LSR_DR))
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+ return (char) FFRBR & 0xff;
+
+ case BTUART:
+ while (!(BTLSR & LSR_DR))
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+ return (char) BTRBR & 0xff;
+ case STUART:
+ while (!(STLSR & LSR_DR))
+ WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */
+ return (char) STRBR & 0xff;
+ }
+ return -1;
}
void
-serial_puts (const char *s)
+pxa_puts_dev (unsigned int uart_index,const char *s)
{
while (*s) {
- serial_putc (*s++);
+ pxa_putc_dev (uart_index,*s++);
}
}
+
+#if defined (CONFIG_FFUART)
+static int ffuart_init(void)
+{
+ return pxa_init_dev(FFUART);
+}
+
+static void ffuart_setbrg(void)
+{
+ return pxa_setbrg_dev(FFUART);
+}
+
+static void ffuart_putc(const char c)
+{
+ return pxa_putc_dev(FFUART,c);
+}
+
+static void ffuart_puts(const char *s)
+{
+ return pxa_puts_dev(FFUART,s);
+}
+
+static int ffuart_getc(void)
+{
+ return pxa_getc_dev(FFUART);
+}
+
+static int ffuart_tstc(void)
+{
+ return pxa_tstc_dev(FFUART);
+}
+
+struct serial_device serial_ffuart_device =
+{
+ "serial_ffuart",
+ "PXA",
+ ffuart_init,
+ ffuart_setbrg,
+ ffuart_getc,
+ ffuart_tstc,
+ ffuart_putc,
+ ffuart_puts,
+};
+#endif
+
+#if defined (CONFIG_BTUART)
+static int btuart_init(void)
+{
+ return pxa_init_dev(BTUART);
+}
+
+static void btuart_setbrg(void)
+{
+ return pxa_setbrg_dev(BTUART);
+}
+
+static void btuart_putc(const char c)
+{
+ return pxa_putc_dev(BTUART,c);
+}
+
+static void btuart_puts(const char *s)
+{
+ return pxa_puts_dev(BTUART,s);
+}
+
+static int btuart_getc(void)
+{
+ return pxa_getc_dev(BTUART);
+}
+
+static int btuart_tstc(void)
+{
+ return pxa_tstc_dev(BTUART);
+}
+
+struct serial_device serial_btuart_device =
+{
+ "serial_btuart",
+ "PXA",
+ btuart_init,
+ btuart_setbrg,
+ btuart_getc,
+ btuart_tstc,
+ btuart_putc,
+ btuart_puts,
+};
+#endif
+
+#if defined (CONFIG_STUART)
+static int stuart_init(void)
+{
+ return pxa_init_dev(STUART);
+}
+
+static void stuart_setbrg(void)
+{
+ return pxa_setbrg_dev(STUART);
+}
+
+static void stuart_putc(const char c)
+{
+ return pxa_putc_dev(STUART,c);
+}
+
+static void stuart_puts(const char *s)
+{
+ return pxa_puts_dev(STUART,s);
+}
+
+static int stuart_getc(void)
+{
+ return pxa_getc_dev(STUART);
+}
+
+static int stuart_tstc(void)
+{
+ return pxa_tstc_dev(STUART);
+}
+
+struct serial_device serial_stuart_device =
+{
+ "serial_stuart",
+ "PXA",
+ stuart_init,
+ stuart_setbrg,
+ stuart_getc,
+ stuart_tstc,
+ stuart_putc,
+ stuart_puts,
+};
+#endif
+
+
+#ifndef CONFIG_SERIAL_MULTI
+inline int serial_init(void) {
+ return (pxa_init_dev(UART_INDEX));
+}
+void serial_setbrg(void) {
+ pxa_setbrg_dev(UART_INDEX);
+}
+int serial_getc(void) {
+ return(pxa_getc_dev(UART_INDEX));
+}
+int serial_tstc(void) {
+ return(pxa_tstc_dev(UART_INDEX));
+}
+void serial_putc(const char c) {
+ pxa_putc_dev(UART_INDEX,c);
+}
+void serial_puts(const char *s) {
+ pxa_puts_dev(UART_INDEX,s);
+}
+#endif /* CONFIG_SERIAL_MULTI */