svn_rev_485

serial driver cleanup

4 files changed, 142 insertions, 329 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index e7738b1db0..672773cc2f 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1,6 +1,8 @@
 menu "serial drivers"
 
-config DRIVER_SERIAL_DUMMY
-	bool "dummy entry"
+config DRIVER_SERIAL_IMX
+	depends on ARCH_IMX
+	default y
+	bool "i.MX serial driver"
 
 endmenu
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 50b562f6b0..1a8d887d73 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -1,8 +1,8 @@
 # atmel_usart.o
 # ns9750_serial.o
 # s3c4510b_uart.o
-obj-y	+= serial.o
 # serial_max3100.o
 # serial_pl010.o
 # serial_pl011.o
 # serial_xuartlite.o
+obj-$(CONFIG_DRIVER_SERIAL_IMX) += serial_imx.o
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
deleted file mode 100644
index 76425d8790..0000000000
--- a/drivers/serial/serial.c
+++ /dev/null
@@ -1,326 +0,0 @@
-/*
- * (C) Copyright 2000
- * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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>
-
-#ifdef CFG_NS16550_SERIAL
-
-#include <ns16550.h>
-#ifdef CFG_NS87308
-#include <ns87308.h>
-#endif
-
-#if defined (CONFIG_SERIAL_MULTI)
-#include <serial.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#if !defined(CONFIG_CONS_INDEX)
-#if defined (CONFIG_SERIAL_MULTI)
-/*   with CONFIG_SERIAL_MULTI we might have no console
- *  on these devices
- */
-#else
-#error	"No console index specified."
-#endif /* CONFIG_SERIAL_MULTI */
-#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4)
-#error	"Invalid console index value."
-#endif
-
-#if CONFIG_CONS_INDEX == 1 && !defined(CFG_NS16550_COM1)
-#error	"Console port 1 defined but not configured."
-#elif CONFIG_CONS_INDEX == 2 && !defined(CFG_NS16550_COM2)
-#error	"Console port 2 defined but not configured."
-#elif CONFIG_CONS_INDEX == 3 && !defined(CFG_NS16550_COM3)
-#error	"Console port 3 defined but not configured."
-#elif CONFIG_CONS_INDEX == 4 && !defined(CFG_NS16550_COM4)
-#error	"Console port 4 defined but not configured."
-#endif
-
-/* Note: The port number specified in the functions is 1 based.
- *	 the array is 0 based.
- */
-static NS16550_t serial_ports[4] = {
-#ifdef CFG_NS16550_COM1
-	(NS16550_t)CFG_NS16550_COM1,
-#else
-	NULL,
-#endif
-#ifdef CFG_NS16550_COM2
-	(NS16550_t)CFG_NS16550_COM2,
-#else
-	NULL,
-#endif
-#ifdef CFG_NS16550_COM3
-	(NS16550_t)CFG_NS16550_COM3,
-#else
-	NULL,
-#endif
-#ifdef CFG_NS16550_COM4
-	(NS16550_t)CFG_NS16550_COM4
-#else
-	NULL
-#endif
-};
-
-#define PORT	serial_ports[port-1]
-#if defined(CONFIG_CONS_INDEX)
-#define CONSOLE	(serial_ports[CONFIG_CONS_INDEX-1])
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-
-/* Multi serial device functions */
-#define DECLARE_ESERIAL_FUNCTIONS(port) \
-    int  eserial##port##_init (void) {\
-	int clock_divisor; \
-	clock_divisor = calc_divisor(serial_ports[port-1]); \
-	NS16550_init(serial_ports[port-1], clock_divisor); \
-	return(0);}\
-    void eserial##port##_setbrg (void) {\
-	serial_setbrg_dev(port);}\
-    int  eserial##port##_getc (void) {\
-	return serial_getc_dev(port);}\
-    int  eserial##port##_tstc (void) {\
-	return serial_tstc_dev(port);}\
-    void eserial##port##_putc (const char c) {\
-	serial_putc_dev(port, c);}\
-    void eserial##port##_puts (const char *s) {\
-	serial_puts_dev(port, s);}
-
-/* Serial device descriptor */
-#define INIT_ESERIAL_STRUCTURE(port,name,bus) {\
-	name,\
-	bus,\
-	eserial##port##_init,\
-	eserial##port##_setbrg,\
-	eserial##port##_getc,\
-	eserial##port##_tstc,\
-	eserial##port##_putc,\
-	eserial##port##_puts, }
-
-#endif /* CONFIG_SERIAL_MULTI */
-
-static int calc_divisor (NS16550_t port)
-{
-#ifdef CONFIG_OMAP1510
-	/* If can't cleanly clock 115200 set div to 1 */
-	if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
-		port->osc_12m_sel = OSC_12M_SEL;	/* enable 6.5 * divisor */
-		return (1);				/* return 1 for base divisor */
-	}
-	port->osc_12m_sel = 0;			/* clear if previsouly set */
-#endif
-#ifdef CONFIG_OMAP1610
-	/* If can't cleanly clock 115200 set div to 1 */
-	if ((CFG_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
-		return (26);		/* return 26 for base divisor */
-	}
-#endif
-
-#ifdef CONFIG_APTIX
-#define MODE_X_DIV 13
-#else
-#define MODE_X_DIV 16
-#endif
-	return (CFG_NS16550_CLK / MODE_X_DIV / gd->baudrate);
-
-}
-
-#if !defined(CONFIG_SERIAL_MULTI)
-int serial_init (void)
-{
-	int clock_divisor;
-
-#ifdef CFG_NS87308
-	initialise_ns87308();
-#endif
-
-#ifdef CFG_NS16550_COM1
-	clock_divisor = calc_divisor(serial_ports[0]);
-	NS16550_init(serial_ports[0], clock_divisor);
-#endif
-#ifdef CFG_NS16550_COM2
-	clock_divisor = calc_divisor(serial_ports[1]);
-	NS16550_init(serial_ports[1], clock_divisor);
-#endif
-#ifdef CFG_NS16550_COM3
-	clock_divisor = calc_divisor(serial_ports[2]);
-	NS16550_init(serial_ports[2], clock_divisor);
-#endif
-#ifdef CFG_NS16550_COM4
-	clock_divisor = calc_divisor(serial_ports[3]);
-	NS16550_init(serial_ports[3], clock_divisor);
-#endif
-
-	return (0);
-}
-#endif
-
-void
-_serial_putc(const char c,const int port)
-{
-	if (c == '\n')
-		NS16550_putc(PORT, '\r');
-
-	NS16550_putc(PORT, c);
-}
-
-void
-_serial_putc_raw(const char c,const int port)
-{
-	NS16550_putc(PORT, c);
-}
-
-void
-_serial_puts (const char *s,const int port)
-{
-	while (*s) {
-		_serial_putc (*s++,port);
-	}
-}
-
-
-int
-_serial_getc(const int port)
-{
-	return NS16550_getc(PORT);
-}
-
-int
-_serial_tstc(const int port)
-{
-	return NS16550_tstc(PORT);
-}
-
-void
-_serial_setbrg (const int port)
-{
-	int clock_divisor;
-
-	clock_divisor = calc_divisor(PORT);
-	NS16550_reinit(PORT, clock_divisor);
-}
-
-#if defined(CONFIG_SERIAL_MULTI)
-static inline void
-serial_putc_dev(unsigned int dev_index,const char c)
-{
-	_serial_putc(c,dev_index);
-}
-#else
-void
-serial_putc(const char c)
-{
-	_serial_putc(c,CONFIG_CONS_INDEX);
-}
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-static inline void
-serial_putc_raw_dev(unsigned int dev_index,const char c)
-{
-	_serial_putc_raw(c,dev_index);
-}
-#else
-void
-serial_putc_raw(const char c)
-{
-	_serial_putc_raw(c,CONFIG_CONS_INDEX);
-}
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-static inline void
-serial_puts_dev(unsigned int dev_index,const char *s)
-{
-	_serial_puts(s,dev_index);
-}
-#else
-void
-serial_puts(const char *s)
-{
-	_serial_puts(s,CONFIG_CONS_INDEX);
-}
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-static inline int
-serial_getc_dev(unsigned int dev_index)
-{
-	return _serial_getc(dev_index);
-}
-#else
-int
-serial_getc(void)
-{
-	return _serial_getc(CONFIG_CONS_INDEX);
-}
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-static inline int
-serial_tstc_dev(unsigned int dev_index)
-{
-	return _serial_tstc(dev_index);
-}
-#else
-int
-serial_tstc(void)
-{
-	return _serial_tstc(CONFIG_CONS_INDEX);
-}
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-static inline void
-serial_setbrg_dev(unsigned int dev_index)
-{
-	_serial_setbrg(dev_index);
-}
-#else
-void
-serial_setbrg(void)
-{
-	_serial_setbrg(CONFIG_CONS_INDEX);
-}
-#endif
-
-#if defined(CONFIG_SERIAL_MULTI)
-
-DECLARE_ESERIAL_FUNCTIONS(1);
-struct serial_device eserial1_device =
-	INIT_ESERIAL_STRUCTURE(1,"eserial0","EUART1");
-DECLARE_ESERIAL_FUNCTIONS(2);
-struct serial_device eserial2_device =
-	INIT_ESERIAL_STRUCTURE(2,"eserial1","EUART2");
-DECLARE_ESERIAL_FUNCTIONS(3);
-struct serial_device eserial3_device =
-	INIT_ESERIAL_STRUCTURE(3,"eserial2","EUART3");
-DECLARE_ESERIAL_FUNCTIONS(4);
-struct serial_device eserial4_device =
-	INIT_ESERIAL_STRUCTURE(4,"eserial3","EUART4");
-#endif /* CONFIG_SERIAL_MULTI */
-
-#endif
diff --git a/drivers/serial/serial_pl011.h b/drivers/serial/serial_pl011.h
new file mode 100644
index 0000000000..5f20fdd108
--- /dev/null
+++ b/drivers/serial/serial_pl011.h
@@ -0,0 +1,137 @@
+/*
+ * (C) Copyright 2003, 2004
+ * ARM Ltd.
+ * Philippe Robin, <philippe.robin@arm.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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
+ */
+
+/*
+ * ARM PrimeCell UART's (PL010 & PL011)
+ * ------------------------------------
+ *
+ *  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). */
+
+#define UART_PL01x_RSR_OE               0x08
+#define UART_PL01x_RSR_BE               0x04
+#define UART_PL01x_RSR_PE               0x02
+#define UART_PL01x_RSR_FE               0x01
+
+#define UART_PL01x_FR_TXFE              0x80
+#define UART_PL01x_FR_RXFF              0x40
+#define UART_PL01x_FR_TXFF              0x20
+#define UART_PL01x_FR_RXFE              0x10
+#define UART_PL01x_FR_BUSY              0x08
+#define UART_PL01x_FR_TMSK              (UART_PL01x_FR_TXFF + UART_PL01x_FR_BUSY)
+
+/*
+ *  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)
+#define UART_PL010_CR_RIE               (1 << 4)
+#define UART_PL010_CR_MSIE              (1 << 3)
+#define UART_PL010_CR_IIRLP             (1 << 2)
+#define UART_PL010_CR_SIREN             (1 << 1)
+#define UART_PL010_CR_UARTEN            (1 << 0)
+
+#define UART_PL010_LCRH_WLEN_8          (3 << 5)
+#define UART_PL010_LCRH_WLEN_7          (2 << 5)
+#define UART_PL010_LCRH_WLEN_6          (1 << 5)
+#define UART_PL010_LCRH_WLEN_5          (0 << 5)
+#define UART_PL010_LCRH_FEN             (1 << 4)
+#define UART_PL010_LCRH_STP2            (1 << 3)
+#define UART_PL010_LCRH_EPS             (1 << 2)
+#define UART_PL010_LCRH_PEN             (1 << 1)
+#define UART_PL010_LCRH_BRK             (1 << 0)
+
+
+#define UART_PL010_BAUD_460800            1
+#define UART_PL010_BAUD_230400            3
+#define UART_PL010_BAUD_115200            7
+#define UART_PL010_BAUD_57600             15
+#define UART_PL010_BAUD_38400             23
+#define UART_PL010_BAUD_19200             47
+#define UART_PL010_BAUD_14400             63
+#define UART_PL010_BAUD_9600              95
+#define UART_PL010_BAUD_4800              191
+#define UART_PL010_BAUD_2400              383
+#define UART_PL010_BAUD_1200              767
+/*
+ *  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)
+#define UART_PL011_LCRH_WLEN_6          (1 << 5)
+#define UART_PL011_LCRH_WLEN_5          (0 << 5)
+#define UART_PL011_LCRH_FEN             (1 << 4)
+#define UART_PL011_LCRH_STP2            (1 << 3)
+#define UART_PL011_LCRH_EPS             (1 << 2)
+#define UART_PL011_LCRH_PEN             (1 << 1)
+#define UART_PL011_LCRH_BRK             (1 << 0)
+
+#define UART_PL011_CR_CTSEN             (1 << 15)
+#define UART_PL011_CR_RTSEN             (1 << 14)
+#define UART_PL011_CR_OUT2              (1 << 13)
+#define UART_PL011_CR_OUT1              (1 << 12)
+#define UART_PL011_CR_RTS               (1 << 11)
+#define UART_PL011_CR_DTR               (1 << 10)
+#define UART_PL011_CR_RXE               (1 << 9)
+#define UART_PL011_CR_TXE               (1 << 8)
+#define UART_PL011_CR_LPE               (1 << 7)
+#define UART_PL011_CR_IIRLP             (1 << 2)
+#define UART_PL011_CR_SIREN             (1 << 1)
+#define UART_PL011_CR_UARTEN            (1 << 0)
+
+#define UART_PL011_IMSC_OEIM            (1 << 10)
+#define UART_PL011_IMSC_BEIM            (1 << 9)
+#define UART_PL011_IMSC_PEIM            (1 << 8)
+#define UART_PL011_IMSC_FEIM            (1 << 7)
+#define UART_PL011_IMSC_RTIM            (1 << 6)
+#define UART_PL011_IMSC_TXIM            (1 << 5)
+#define UART_PL011_IMSC_RXIM            (1 << 4)
+#define UART_PL011_IMSC_DSRMIM          (1 << 3)
+#define UART_PL011_IMSC_DCDMIM          (1 << 2)
+#define UART_PL011_IMSC_CTSMIM          (1 << 1)
+#define UART_PL011_IMSC_RIMIM           (1 << 0)