[PATCH] CRIS: update simple drivers

Updates for 2.6.9 in basic character based drivers.
Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/cris/arch-v10/drivers/axisflashmap.c

@@ -11,6 +11,9 @@
  * partition split defined below.
  *
  * $Log: axisflashmap.c,v $
+ * Revision 1.10  2004/08/16 12:37:22  starvik
+ * Merge of Linux 2.6.8
+ *
  * Revision 1.8  2004/05/14 07:58:03  starvik
  * Merge of changes from 2.4
  *
@@ -153,6 +156,14 @@
 #define FLASH_CACHED_ADDR    KSEG_F
 #endif
 
+#if CONFIG_ETRAX_FLASH_BUSWIDTH==1
+#define flash_data __u8
+#elif CONFIG_ETRAX_FLASH_BUSWIDTH==2
+#define flash_data __u16
+#elif CONFIG_ETRAX_FLASH_BUSWIDTH==4
+#define flash_data __u16
+#endif
+
 /* From head.S */
 extern unsigned long romfs_start, romfs_length, romfs_in_flash;
 
@@ -161,19 +172,11 @@ struct mtd_info* axisflash_mtd = NULL;
 
 /* Map driver functions. */
 
-static __u8 flash_read8(struct map_info *map, unsigned long ofs)
-{
-	return *(__u8 *)(map->map_priv_1 + ofs);
-}
-
-static __u16 flash_read16(struct map_info *map, unsigned long ofs)
+static map_word flash_read(struct map_info *map, unsigned long ofs)
 {
-	return *(__u16 *)(map->map_priv_1 + ofs);
-}
-
-static __u32 flash_read32(struct map_info *map, unsigned long ofs)
-{
-	return *(volatile unsigned int *)(map->map_priv_1 + ofs);
+	map_word tmp;
+	tmp.x[0] = *(flash_data *)(map->map_priv_1 + ofs);
+	return tmp;
 }
 
 static void flash_copy_from(struct map_info *map, void *to,
@@ -182,19 +185,9 @@ static void flash_copy_from(struct map_info *map, void *to,
 	memcpy(to, (void *)(map->map_priv_1 + from), len);
 }
 
-static void flash_write8(struct map_info *map, __u8 d, unsigned long adr)
-{
-	*(__u8 *)(map->map_priv_1 + adr) = d;
-}
-
-static void flash_write16(struct map_info *map, __u16 d, unsigned long adr)
-{
-	*(__u16 *)(map->map_priv_1 + adr) = d;
-}
-
-static void flash_write32(struct map_info *map, __u32 d, unsigned long adr)
+static void flash_write(struct map_info *map, map_word d, unsigned long adr)
 {
-	*(__u32 *)(map->map_priv_1 + adr) = d;
+	*(flash_data *)(map->map_priv_1 + adr) = (flash_data)d.x[0];
 }
 
 /*
@@ -215,14 +208,10 @@ static void flash_write32(struct map_info *map, __u32 d, unsigned long adr)
 static struct map_info map_cse0 = {
 	.name = "cse0",
 	.size = MEM_CSE0_SIZE,
-	.buswidth = CONFIG_ETRAX_FLASH_BUSWIDTH,
-	.read8 = flash_read8,
-	.read16 = flash_read16,
-	.read32 = flash_read32,
+	.bankwidth = CONFIG_ETRAX_FLASH_BUSWIDTH,
+	.read = flash_read,
 	.copy_from = flash_copy_from,
-	.write8 = flash_write8,
-	.write16 = flash_write16,
-	.write32 = flash_write32,
+	.write = flash_write,
 	.map_priv_1 = FLASH_UNCACHED_ADDR
 };
 
@@ -235,14 +224,10 @@ static struct map_info map_cse0 = {
 static struct map_info map_cse1 = {
 	.name = "cse1",
 	.size = MEM_CSE1_SIZE,
-	.buswidth = CONFIG_ETRAX_FLASH_BUSWIDTH,
-	.read8 = flash_read8,
-	.read16 = flash_read16,
-	.read32 = flash_read32,
+	.bankwidth = CONFIG_ETRAX_FLASH_BUSWIDTH,
+	.read = flash_read,
 	.copy_from = flash_copy_from,
-	.write8 = flash_write8,
-	.write16 = flash_write16,
-	.write32 = flash_write32,
+	.write = flash_write,
 	.map_priv_1 = FLASH_UNCACHED_ADDR + MEM_CSE0_SIZE
 };
 

arch/cris/arch-v10/drivers/ds1302.c

@@ -7,6 +7,9 @@
 *! Functions exported: ds1302_readreg, ds1302_writereg, ds1302_init
 *!
 *! $Log: ds1302.c,v $
+*! Revision 1.14  2004/08/24 06:48:43  starvik
+*! Whitespace cleanup
+*!
 *! Revision 1.13  2004/05/28 09:26:59  starvik
 *! Modified I2C initialization to work in 2.6.
 *!
@@ -123,7 +126,7 @@
 *!
 *! (C) Copyright 1999, 2000, 2001  Axis Communications AB, LUND, SWEDEN
 *!
-*! $Id: ds1302.c,v 1.13 2004/05/28 09:26:59 starvik Exp $
+*! $Id: ds1302.c,v 1.14 2004/08/24 06:48:43 starvik Exp $
 *!
 *!***************************************************************************/
 

arch/cris/arch-v10/drivers/gpio.c

-/* $Id: gpio.c,v 1.11 2004/05/14 07:58:03 starvik Exp $
+/* $Id: gpio.c,v 1.12 2004/08/24 07:19:59 starvik Exp $
  *
  * Etrax general port I/O device
  *
@@ -9,6 +9,9 @@
  *             Johan Adolfsson  (read/set directions, write, port G)
  *
  * $Log: gpio.c,v $
+ * Revision 1.12  2004/08/24 07:19:59  starvik
+ * Whitespace cleanup
+ *
  * Revision 1.11  2004/05/14 07:58:03  starvik
  * Merge of changes from 2.4
  *

arch/cris/arch-v10/drivers/i2c.c

@@ -12,6 +12,12 @@
 *!                                 don't use PB_I2C if DS1302 uses same bits,
 *!                                 use PB.
 *! $Log: i2c.c,v $
+*! Revision 1.9  2004/08/24 06:49:14  starvik
+*! Whitespace cleanup
+*!
+*! Revision 1.8  2004/06/08 08:48:26  starvik
+*! Removed unused code
+*!
 *! Revision 1.7  2004/05/28 09:26:59  starvik
 *! Modified I2C initialization to work in 2.6.
 *!
@@ -69,7 +75,7 @@
 *! (C) Copyright 1999-2002 Axis Communications AB, LUND, SWEDEN
 *!
 *!***************************************************************************/
-/* $Id: i2c.c,v 1.7 2004/05/28 09:26:59 starvik Exp $ */
+/* $Id: i2c.c,v 1.9 2004/08/24 06:49:14 starvik Exp $ */
 
 /****************** INCLUDE FILES SECTION ***********************************/
 
@@ -110,14 +116,6 @@ static const char i2c_name[] = "i2c";
 #define I2C_DATA_HIGH 1
 #define I2C_DATA_LOW 0
 
-#if 0
-/* TODO: fix this so the CONFIG_ETRAX_I2C_USES... is set in Config.in instead */
-#if defined(CONFIG_DS1302) && (CONFIG_DS1302_SDABIT==0) && \
-           (CONFIG_DS1302_SCLBIT == 1)
-#define CONFIG_ETRAX_I2C_USES_PB_NOT_PB_I2C
-#endif
-#endif
-
 #ifdef CONFIG_ETRAX_I2C_USES_PB_NOT_PB_I2C
 /* Use PB and not PB_I2C */
 #ifndef CONFIG_ETRAX_I2C_DATA_PORT

arch/cris/arch-v10/drivers/pcf8563.c

@@ -15,7 +15,7 @@
  *
  * Author: Tobias Anderberg <tobiasa@axis.com>.
  *
- * $Id: pcf8563.c,v 1.4 2004/05/28 09:26:59 starvik Exp $
+ * $Id: pcf8563.c,v 1.8 2004/08/24 06:42:51 starvik Exp $
  */
 
 #include <linux/config.h>
@@ -40,7 +40,7 @@
 #define PCF8563_MAJOR 121		/* Local major number. */
 #define DEVICE_NAME "rtc"		/* Name which is registered in /proc/devices. */
 #define PCF8563_NAME "PCF8563"
-#define DRIVER_VERSION "$Revision: 1.4 $"
+#define DRIVER_VERSION "$Revision: 1.8 $"
 
 /* I2C bus slave registers. */
 #define RTC_I2C_READ		0xa3

arch/cris/arch-v10/drivers/serial.c

-/* $Id: serial.c,v 1.20 2004/05/24 12:00:20 starvik Exp $
+/* $Id: serial.c,v 1.25 2004/09/29 10:33:49 starvik Exp $
  *
  * Serial port driver for the ETRAX 100LX chip
  *
@@ -7,6 +7,20 @@
  *    Many, many authors. Based once upon a time on serial.c for 16x50.
  *
  * $Log: serial.c,v $
+ * Revision 1.25  2004/09/29 10:33:49  starvik
+ * Resolved a dealock when printing debug from kernel.
+ *
+ * Revision 1.24  2004/08/27 23:25:59  johana
+ * rs_set_termios() must call change_speed() if c_iflag has changed or
+ * automatic XOFF handling will be enabled and transmitter will stop
+ * if 0x13 is received.
+ *
+ * Revision 1.23  2004/08/24 06:57:13  starvik
+ * More whitespace cleanup
+ *
+ * Revision 1.22  2004/08/24 06:12:20  starvik
+ * Whitespace cleanup
+ *
  * Revision 1.20  2004/05/24 12:00:20  starvik
  * Big merge of stuff from Linux 2.4 (e.g. manual mode for the serial port).
  *
@@ -409,7 +423,7 @@
  *
  */
 
-static char *serial_version = "$Revision: 1.20 $";
+static char *serial_version = "$Revision: 1.25 $";
 
 #include <linux/config.h>
 #include <linux/version.h>
@@ -435,7 +449,7 @@ static char *serial_version = "$Revision: 1.20 $";
 #include <asm/irq.h>
 #include <asm/system.h>
 #include <asm/segment.h>
-#include <linux/bitops.h>
+#include <asm/bitops.h>
 #include <linux/delay.h>
 
 #include <asm/arch/svinto.h>
@@ -577,12 +591,12 @@ unsigned long timer_data_to_ns(unsigned long timer_data);
 static void change_speed(struct e100_serial *info);
 static void rs_throttle(struct tty_struct * tty);
 static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
-static int rs_write(struct tty_struct * tty,
+static int rs_write(struct tty_struct * tty, int from_user,
                     const unsigned char *buf, int count);
-extern _INLINE_ int rs_raw_write(struct tty_struct * tty,
+extern _INLINE_ int rs_raw_write(struct tty_struct * tty, int from_user,
                             const unsigned char *buf, int count);
 #ifdef CONFIG_ETRAX_RS485
-static int e100_write_rs485(struct tty_struct * tty,
+static int e100_write_rs485(struct tty_struct * tty, int from_user,
                             const unsigned char *buf, int count);
 #endif
 static int get_lsr_info(struct e100_serial * info, unsigned int *value);
@@ -1786,7 +1800,7 @@ e100_enable_rs485(struct tty_struct *tty,struct rs485_control *r)
 }
 
 static int
-e100_write_rs485(struct tty_struct *tty,
+e100_write_rs485(struct tty_struct *tty, int from_user,
                  const unsigned char *buf, int count)
 {
 	struct e100_serial * info = (struct e100_serial *)tty->driver_data;
@@ -1799,7 +1813,7 @@ e100_write_rs485(struct tty_struct *tty,
 	 */
 	info->rs485.enabled = 1;
 	/* rs_write now deals with RS485 if enabled */
-	count = rs_write(tty, buf, count);
+	count = rs_write(tty, from_user, buf, count);
 	info->rs485.enabled = old_enabled;
 	return count;
 }
@@ -3614,7 +3628,7 @@ rs_flush_chars(struct tty_struct *tty)
 }
 
 extern _INLINE_ int
-rs_raw_write(struct tty_struct * tty,
+rs_raw_write(struct tty_struct * tty, int from_user,
 	  const unsigned char *buf, int count)
 {
 	int	c, ret = 0;
@@ -3649,8 +3663,42 @@ rs_raw_write(struct tty_struct * tty,
 	 * atomic operation... this could perhaps be avoided by more clever
 	 * design.
 	 */
-	cli();	
+	if (from_user) {
+		down(&tmp_buf_sem);
 		while (1) {
+			int c1;
+			c = CIRC_SPACE_TO_END(info->xmit.head,
+					      info->xmit.tail,
+					      SERIAL_XMIT_SIZE);
+			if (count < c)
+				c = count;
+			if (c <= 0)
+				break;
+
+			c -= copy_from_user(tmp_buf, buf, c);
+			if (!c) {
+				if (!ret)
+					ret = -EFAULT;
+				break;
+			}
+			cli();
+			c1 = CIRC_SPACE_TO_END(info->xmit.head,
+					       info->xmit.tail,
+					       SERIAL_XMIT_SIZE);
+			if (c1 < c)
+				c = c1;
+			memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
+			info->xmit.head = ((info->xmit.head + c) &
+					   (SERIAL_XMIT_SIZE-1));
+			restore_flags(flags);
+			buf += c;
+			count -= c;
+			ret += c;
+		}
+		up(&tmp_buf_sem);
+	} else {
+		cli();
+		while (count) {
 			c = CIRC_SPACE_TO_END(info->xmit.head,
 					      info->xmit.tail,
 					      SERIAL_XMIT_SIZE);
@@ -3668,6 +3716,7 @@ rs_raw_write(struct tty_struct * tty,
 			ret += c;
 		}
 		restore_flags(flags);
+	}
 	
 	/* enable transmitter if not running, unless the tty is stopped
 	 * this does not need IRQ protection since if tr_running == 0
@@ -3686,7 +3735,7 @@ rs_raw_write(struct tty_struct * tty,
 } /* raw_raw_write() */
 
 static int 
-rs_write(struct tty_struct * tty,
+rs_write(struct tty_struct * tty, int from_user,
 	 const unsigned char *buf, int count)
 {
 #if defined(CONFIG_ETRAX_RS485)
@@ -3715,7 +3764,7 @@ rs_write(struct tty_struct * tty,
 	}
 #endif /* CONFIG_ETRAX_RS485 */
 
-	count = rs_raw_write(tty, buf, count);
+	count = rs_raw_write(tty, from_user, buf, count);
 
 #if defined(CONFIG_ETRAX_RS485)
 	if (info->rs485.enabled)
@@ -4217,7 +4266,8 @@ rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
 {
 	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
 
-	if (tty->termios->c_cflag == old_termios->c_cflag)
+	if (tty->termios->c_cflag == old_termios->c_cflag &&
+	    tty->termios->c_iflag == old_termios->c_iflag)
 		return;
 
 	change_speed(info);
@@ -4241,6 +4291,7 @@ extern debugport_write_function debug_write_function;
 static int rs_debug_write_function(int i, const char *buf, unsigned int len)
 {
 	int cnt;
+	int written = 0;
         struct tty_struct *tty;
         static int recurse_cnt = 0;
 
@@ -4252,14 +4303,17 @@ static int rs_debug_write_function(int i, const char *buf, unsigned int len)
 
 		local_irq_save(flags);
 		recurse_cnt++;
+		local_irq_restore(flags);
                 do {
-                        cnt = rs_write(tty, 0, buf, len);
+                        cnt = rs_write(tty, 0, buf + written, len);
                         if (cnt >= 0) {
+				written += cnt;
                                 buf += cnt;
                                 len -= cnt;
                         } else
                                 len = cnt;
                 } while(len > 0);
+		local_irq_save(flags);
 		recurse_cnt--;
 		local_irq_restore(flags);
                 return 1;

arch/cris/arch-v10/kernel/fasttimer.c

@@ -102,6 +102,7 @@
 #include <asm/rtc.h>
 
 #include <linux/config.h>
+#include <linux/version.h>
 
 #include <asm/arch/svinto.h>
 #include <asm/fasttimer.h>
@@ -598,8 +599,23 @@ void schedule_usleep(unsigned long us)
 
 #ifdef CONFIG_PROC_FS
 static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
-			,int *eof, void *data_unused);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+                       ,int *eof, void *data_unused
+#else
+                        ,int unused
+#endif
+                               );
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
 static struct proc_dir_entry *fasttimer_proc_entry;
+#else
+static struct proc_dir_entry fasttimer_proc_entry =
+{
+  0, 9, "fasttimer",
+  S_IFREG | S_IRUGO, 1, 0, 0,
+  0, NULL /* ops -- default to array */,
+  &proc_fasttimer_read /* get_info */,
+};
+#endif
 #endif /* CONFIG_PROC_FS */
 
 #ifdef CONFIG_PROC_FS
@@ -608,7 +624,12 @@ static struct proc_dir_entry *fasttimer_proc_entry;
 #define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
 
 static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
-			,int *eof, void *data_unused)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+                       ,int *eof, void *data_unused
+#else
+                        ,int unused
+#endif
+                               )
 {
   unsigned long flags;
   int i = 0;
@@ -784,7 +805,9 @@ static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
 
   memcpy(buf, bigbuf + offset, len);
   *start = buf;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
   *eof = 1;
+#endif
 
   return len;
 }
@@ -959,8 +982,12 @@ void fast_timer_init(void)
     }
 #endif
 #ifdef CONFIG_PROC_FS
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
    if ((fasttimer_proc_entry = create_proc_entry( "fasttimer", 0, 0 )))
      fasttimer_proc_entry->read_proc = proc_fasttimer_read;
+#else
+    proc_register_dynamic(&proc_root, &fasttimer_proc_entry);
+#endif
 #endif /* PROC_FS */
     if(request_irq(TIMER1_IRQ_NBR, timer1_handler, SA_SHIRQ,
                    "fast timer int", NULL))