pxa: move serial driver to drivers/serial

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 385 insertions, 0 deletions

diff --git a/drivers/serial/serial_pxa.c b/drivers/serial/serial_pxa.c
new file mode 100644
index 0000000..9ba457e
--- /dev/null
+++ b/drivers/serial/serial_pxa.c
@@ -0,0 +1,385 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <serial.h>
+#include <asm/arch/pxa-regs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define FFUART_INDEX	0
+#define BTUART_INDEX	1
+#define STUART_INDEX	2
+
+#ifndef CONFIG_SERIAL_MULTI
+#if defined (CONFIG_FFUART)
+#define UART_INDEX	FFUART_INDEX
+#elif defined (CONFIG_BTUART)
+#define UART_INDEX	BTUART_INDEX
+#elif defined (CONFIG_STUART)
+#define UART_INDEX	STUART_INDEX
+#else
+#error "Bad: you didn't configure serial ..."
+#endif
+#endif
+
+void pxa_setbrg_dev (unsigned int uart_index)
+{
+	unsigned int quot = 0;
+
+	if (gd->baudrate == 1200)
+		quot = 768;
+	else if (gd->baudrate == 9600)
+		quot = 96;
+	else if (gd->baudrate == 19200)
+		quot = 48;
+	else if (gd->baudrate == 38400)
+		quot = 24;
+	else if (gd->baudrate == 57600)
+		quot = 16;
+	else if (gd->baudrate == 115200)
+		quot = 8;
+	else
+		hang ();
+
+	switch (uart_index) {
+		case FFUART_INDEX:
+#ifdef CONFIG_CPU_MONAHANS
+			CKENA |= CKENA_22_FFUART;
+#else
+			CKEN |= CKEN6_FFUART;
+#endif /* CONFIG_CPU_MONAHANS */
+
+			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;
+
+			FFIER = IER_UUE;	/* Enable FFUART */
+		break;
+
+		case BTUART_INDEX:
+#ifdef CONFIG_CPU_MONAHANS
+			CKENA |= CKENA_21_BTUART;
+#else
+			CKEN |= CKEN7_BTUART;
+#endif /*  CONFIG_CPU_MONAHANS */
+
+			BTIER = 0;
+			BTFCR = 0;
+
+			/* set baud rate */
+			BTLCR = LCR_DLAB;
+			BTDLL = quot & 0xff;
+			BTDLH = quot >> 8;
+			BTLCR = LCR_WLS0 | LCR_WLS1;
+
+			BTIER = IER_UUE;	/* Enable BFUART */
+
+		break;
+
+		case STUART_INDEX:
+#ifdef CONFIG_CPU_MONAHANS
+			CKENA |= CKENA_23_STUART;
+#else
+			CKEN |= CKEN5_STUART;
+#endif /* CONFIG_CPU_MONAHANS */
+
+			STIER = 0;
+			STFCR = 0;
+
+			/* set baud rate */
+			STLCR = LCR_DLAB;
+			STDLL = quot & 0xff;
+			STDLH = quot >> 8;
+			STLCR = LCR_WLS0 | LCR_WLS1;
+
+			STIER = IER_UUE;			/* Enable STUART */
+			break;
+
+		default:
+			hang();
+	}
+}
+
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int pxa_init_dev (unsigned int uart_index)
+{
+	pxa_setbrg_dev (uart_index);
+
+	return (0);
+}
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void pxa_putc_dev (unsigned int uart_index,const char c)
+{
+	switch (uart_index) {
+		case FFUART_INDEX:
+		/* 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_INDEX:
+			while ((BTLSR & LSR_TEMT ) == 0 )
+				WATCHDOG_RESET ();	/* Reset HW Watchdog, if needed */
+			BTTHR = c;
+			break;
+
+		case STUART_INDEX:
+			while ((STLSR & LSR_TEMT ) == 0 )
+				WATCHDOG_RESET ();	/* Reset HW Watchdog, if needed */
+			STTHR = c;
+			break;
+	}
+
+	/* If \n, also do \r */
+	if (c == '\n')
+		pxa_putc_dev (uart_index,'\r');
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int pxa_tstc_dev (unsigned int uart_index)
+{
+	switch (uart_index) {
+		case FFUART_INDEX:
+			return FFLSR & LSR_DR;
+		case BTUART_INDEX:
+			return BTLSR & LSR_DR;
+		case STUART_INDEX:
+			return STLSR & LSR_DR;
+	}
+	return -1;
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int pxa_getc_dev (unsigned int uart_index)
+{
+	switch (uart_index) {
+		case FFUART_INDEX:
+			while (!(FFLSR & LSR_DR))
+			WATCHDOG_RESET ();	/* Reset HW Watchdog, if needed */
+			return (char) FFRBR & 0xff;
+
+		case BTUART_INDEX:
+			while (!(BTLSR & LSR_DR))
+			WATCHDOG_RESET ();	/* Reset HW Watchdog, if needed */
+			return (char) BTRBR & 0xff;
+		case STUART_INDEX:
+			while (!(STLSR & LSR_DR))
+			WATCHDOG_RESET ();	/* Reset HW Watchdog, if needed */
+			return (char) STRBR & 0xff;
+	}
+	return -1;
+}
+
+void
+pxa_puts_dev (unsigned int uart_index,const char *s)
+{
+	while (*s) {
+		pxa_putc_dev (uart_index,*s++);
+	}
+}
+
+#if defined (CONFIG_FFUART)
+static int ffuart_init(void)
+{
+	return pxa_init_dev(FFUART_INDEX);
+}
+
+static void ffuart_setbrg(void)
+{
+	return pxa_setbrg_dev(FFUART_INDEX);
+}
+
+static void ffuart_putc(const char c)
+{
+	return pxa_putc_dev(FFUART_INDEX,c);
+}
+
+static void ffuart_puts(const char *s)
+{
+	return pxa_puts_dev(FFUART_INDEX,s);
+}
+
+static int ffuart_getc(void)
+{
+	return pxa_getc_dev(FFUART_INDEX);
+}
+
+static int ffuart_tstc(void)
+{
+	return pxa_tstc_dev(FFUART_INDEX);
+}
+
+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_INDEX);
+}
+
+static void btuart_setbrg(void)
+{
+	return pxa_setbrg_dev(BTUART_INDEX);
+}
+
+static void btuart_putc(const char c)
+{
+	return pxa_putc_dev(BTUART_INDEX,c);
+}
+
+static void btuart_puts(const char *s)
+{
+	return pxa_puts_dev(BTUART_INDEX,s);
+}
+
+static int btuart_getc(void)
+{
+	return pxa_getc_dev(BTUART_INDEX);
+}
+
+static int btuart_tstc(void)
+{
+	return pxa_tstc_dev(BTUART_INDEX);
+}
+
+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_INDEX);
+}
+
+static void stuart_setbrg(void)
+{
+	return pxa_setbrg_dev(STUART_INDEX);
+}
+
+static void stuart_putc(const char c)
+{
+	return pxa_putc_dev(STUART_INDEX,c);
+}
+
+static void stuart_puts(const char *s)
+{
+	return pxa_puts_dev(STUART_INDEX,s);
+}
+
+static int stuart_getc(void)
+{
+	return pxa_getc_dev(STUART_INDEX);
+}
+
+static int stuart_tstc(void)
+{
+	return pxa_tstc_dev(STUART_INDEX);
+}
+
+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 */