Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (85 commits)
  Blackfin char driver for Blackfin on-chip OTP memory (v3)
  Blackfin Serial Driver: fix bug - use mod_timer to replace only add_timer.
  Blackfin Serial Driver: the uart break anomaly has been given its own number, so switch to it
  Blackfin Serial Driver: use BFIN_UART_NR_PORTS to help SIR driver in uart port.
  Blackfin Serial Driver: Fix bug - kernel hangs when accessing uart 0 on bf537 when booting u-boot and linux on uart 1
  Blackfin Serial Driver: punt unused lsr variable
  Blackfin Serial Driver: Enable IR function when user application (irattach /dev/ttyBFx -s) call TIOCSETD ioctl with line discipline N_IRDA
  [Blackfin] arch: add include/boot .gitignore files
  [Blackfin] arch: Functional power management support: Add support for cpu frequency scaling
  [Blackfin] arch: Functional power management support: Remove broken cpu frequency scaling drivers
  [Blackfin] arch: Equalize include files: Add PLL_DIV Masks
  [Blackfin] arch: Add a warning about the value of CLKIN.
  [Blackfin] arch: take DDR DEVWD into consideration as well for BF548
  [Blackfin] arch: Remove the circular buffering mechanism for exceptions
  [Blackfin] arch: lose unnecessary dependency on CONFIG_BFIN_ICACHE for MPU
  [Blackfin] arch: fix bug - before assign new channel to the map register, need clear the bits first.
  [Blackfin] arch: add Blackfin on-chip SIR IrDA driver support
  [Blackfin] arch: BF54x memsizes are in mbits, not mbytes
  [Blackfin] arch: try to remove condition that causes double fault, by checking current before it gets dereferenced
  [Blackfin] arch: Update anomaly list.
  ...

5 files changed, 256 insertions, 20 deletions

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index a87b89d..2906ee7 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -481,6 +481,34 @@ config BRIQ_PANEL
 
 	  It's safe to say N here.
 
+config BFIN_OTP
+	tristate "Blackfin On-Chip OTP Memory Support"
+	depends on BLACKFIN && (BF52x || BF54x)
+	default y
+	help
+	  If you say Y here, you will get support for a character device
+	  interface into the One Time Programmable memory pages that are
+	  stored on the Blackfin processor.  This will not get you access
+	  to the secure memory pages however.  You will need to write your
+	  own secure code and reader for that.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called bfin-otp.
+
+	  If unsure, it is safe to say Y.
+
+config BFIN_OTP_WRITE_ENABLE
+	bool "Enable writing support of OTP pages"
+	depends on BFIN_OTP
+	default n
+	help
+	  If you say Y here, you will enable support for writing of the
+	  OTP pages.  This is dangerous by nature as you can only program
+	  the pages once, so only enable this option when you actually
+	  need it so as to not inadvertently clobber data.
+
+	  If unsure, say N.
+
 config PRINTER
 	tristate "Parallel printer support"
 	depends on PARPORT
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 5407b76..4c1c584 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -59,6 +59,7 @@ obj-$(CONFIG_VIOTAPE)		+= viotape.o
 obj-$(CONFIG_HVCS)		+= hvcs.o
 obj-$(CONFIG_SGI_MBCS)		+= mbcs.o
 obj-$(CONFIG_BRIQ_PANEL)	+= briq_panel.o
+obj-$(CONFIG_BFIN_OTP)		+= bfin-otp.o
 
 obj-$(CONFIG_PRINTER)		+= lp.o
 obj-$(CONFIG_TIPAR)		+= tipar.o
diff --git a/drivers/char/bfin-otp.c b/drivers/char/bfin-otp.c
new file mode 100644
index 0000000..0a01329
--- /dev/null
+++ b/drivers/char/bfin-otp.c
@@ -0,0 +1,189 @@
+/*
+ * Blackfin On-Chip OTP Memory Interface
+ *  Supports BF52x/BF54x
+ *
+ * Copyright 2007-2008 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+#include <asm/blackfin.h>
+#include <asm/uaccess.h>
+
+#define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__, __LINE__, ## args)
+#define stampit() stamp("here i am")
+#define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); })
+
+#define DRIVER_NAME "bfin-otp"
+#define PFX DRIVER_NAME ": "
+
+static DEFINE_MUTEX(bfin_otp_lock);
+
+/* OTP Boot ROM functions */
+#define _BOOTROM_OTP_COMMAND           0xEF000018
+#define _BOOTROM_OTP_READ              0xEF00001A
+#define _BOOTROM_OTP_WRITE             0xEF00001C
+
+static u32 (* const otp_command)(u32 command, u32 value) = (void *)_BOOTROM_OTP_COMMAND;
+static u32 (* const otp_read)(u32 page, u32 flags, u64 *page_content) = (void *)_BOOTROM_OTP_READ;
+static u32 (* const otp_write)(u32 page, u32 flags, u64 *page_content) = (void *)_BOOTROM_OTP_WRITE;
+
+/* otp_command(): defines for "command" */
+#define OTP_INIT             0x00000001
+#define OTP_CLOSE            0x00000002
+
+/* otp_{read,write}(): defines for "flags" */
+#define OTP_LOWER_HALF       0x00000000 /* select upper/lower 64-bit half (bit 0) */
+#define OTP_UPPER_HALF       0x00000001
+#define OTP_NO_ECC           0x00000010 /* do not use ECC */
+#define OTP_LOCK             0x00000020 /* sets page protection bit for page */
+#define OTP_ACCESS_READ      0x00001000
+#define OTP_ACCESS_READWRITE 0x00002000
+
+/* Return values for all functions */
+#define OTP_SUCCESS          0x00000000
+#define OTP_MASTER_ERROR     0x001
+#define OTP_WRITE_ERROR      0x003
+#define OTP_READ_ERROR       0x005
+#define OTP_ACC_VIO_ERROR    0x009
+#define OTP_DATA_MULT_ERROR  0x011
+#define OTP_ECC_MULT_ERROR   0x021
+#define OTP_PREV_WR_ERROR    0x041
+#define OTP_DATA_SB_WARN     0x100
+#define OTP_ECC_SB_WARN      0x200
+
+/**
+ *	bfin_otp_read - Read OTP pages
+ *
+ *	All reads must be in half page chunks (half page == 64 bits).
+ */
+static ssize_t bfin_otp_read(struct file *file, char __user *buff, size_t count, loff_t *pos)
+{
+	ssize_t bytes_done;
+	u32 page, flags, ret;
+	u64 content;
+
+	stampit();
+
+	if (count % sizeof(u64))
+		return -EMSGSIZE;
+
+	if (mutex_lock_interruptible(&bfin_otp_lock))
+		return -ERESTARTSYS;
+
+	bytes_done = 0;
+	page = *pos / (sizeof(u64) * 2);
+	while (bytes_done < count) {
+		flags = (*pos % (sizeof(u64) * 2) ? OTP_UPPER_HALF : OTP_LOWER_HALF);
+		stamp("processing page %i (%s)", page, (flags == OTP_UPPER_HALF ? "upper" : "lower"));
+		ret = otp_read(page, flags, &content);
+		if (ret & OTP_MASTER_ERROR) {
+			bytes_done = -EIO;
+			break;
+		}
+		if (copy_to_user(buff + bytes_done, &content, sizeof(content))) {
+			bytes_done = -EFAULT;
+			break;
+		}
+		if (flags == OTP_UPPER_HALF)
+			++page;
+		bytes_done += sizeof(content);
+		*pos += sizeof(content);
+	}
+
+	mutex_unlock(&bfin_otp_lock);
+
+	return bytes_done;
+}
+
+#ifdef CONFIG_BFIN_OTP_WRITE_ENABLE
+/**
+ *	bfin_otp_write - Write OTP pages
+ *
+ *	All writes must be in half page chunks (half page == 64 bits).
+ */
+static ssize_t bfin_otp_write(struct file *filp, const char __user *buff, size_t count, loff_t *pos)
+{
+	stampit();
+
+	if (count % sizeof(u64))
+		return -EMSGSIZE;
+
+	if (mutex_lock_interruptible(&bfin_otp_lock))
+		return -ERESTARTSYS;
+
+	/* need otp_init() documentation before this can be implemented */
+
+	mutex_unlock(&bfin_otp_lock);
+
+	return -EINVAL;
+}
+#else
+# define bfin_otp_write NULL
+#endif
+
+static struct file_operations bfin_otp_fops = {
+	.owner    = THIS_MODULE,
+	.read     = bfin_otp_read,
+	.write    = bfin_otp_write,
+};
+
+static struct miscdevice bfin_otp_misc_device = {
+	.minor    = MISC_DYNAMIC_MINOR,
+	.name     = DRIVER_NAME,
+	.fops     = &bfin_otp_fops,
+};
+
+/**
+ *	bfin_otp_init - Initialize module
+ *
+ *	Registers the device and notifier handler. Actual device
+ *	initialization is handled by bfin_otp_open().
+ */
+static int __init bfin_otp_init(void)
+{
+	int ret;
+
+	stampit();
+
+	ret = misc_register(&bfin_otp_misc_device);
+	if (ret) {
+		pr_init(KERN_ERR PFX "unable to register a misc device\n");
+		return ret;
+	}
+
+	pr_init(KERN_INFO PFX "initialized\n");
+
+	return 0;
+}
+
+/**
+ *	bfin_otp_exit - Deinitialize module
+ *
+ *	Unregisters the device and notifier handler. Actual device
+ *	deinitialization is handled by bfin_otp_close().
+ */
+static void __exit bfin_otp_exit(void)
+{
+	stampit();
+
+	misc_deregister(&bfin_otp_misc_device);
+}
+
+module_init(bfin_otp_init);
+module_exit(bfin_otp_exit);
+
+MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>");
+MODULE_DESCRIPTION("Blackfin OTP Memory Interface");
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 2399a37..015e163 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -827,7 +827,7 @@ config ULTRA32
 
 config BFIN_MAC
 	tristate "Blackfin 527/536/537 on-chip mac support"
-	depends on NET_ETHERNET && (BF527 || BF537 || BF536) && (!BF537_PORT_H)
+	depends on NET_ETHERNET && (BF527 || BF537 || BF536)
 	select CRC32
 	select MII
 	select PHYLIB
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 46bb47f..5f55534 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -151,7 +151,8 @@ void kgdb_put_debug_char(int chr)
 {
 	struct bfin_serial_port *uart;
 	
-	if (CONFIG_KGDB_UART_PORT<0 || CONFIG_KGDB_UART_PORT>=NR_PORTS)
+	if (CONFIG_KGDB_UART_PORT < 0
+		|| CONFIG_KGDB_UART_PORT >= BFIN_UART_NR_PORTS)
 		uart = &bfin_serial_ports[0];
 	else
 		uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
@@ -173,7 +174,8 @@ int kgdb_get_debug_char(void)
 	struct bfin_serial_port *uart;
 	unsigned char chr;
 
-	if (CONFIG_KGDB_UART_PORT<0 || CONFIG_KGDB_UART_PORT>=NR_PORTS)
+	if (CONFIG_KGDB_UART_PORT < 0
+		|| CONFIG_KGDB_UART_PORT >= BFIN_UART_NR_PORTS)
 		uart = &bfin_serial_ports[0];
 	else
 		uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
@@ -192,7 +194,7 @@ int kgdb_get_debug_char(void)
 }
 #endif
 
-#if ANOMALY_05000230 && defined(CONFIG_SERIAL_BFIN_PIO)
+#if ANOMALY_05000363 && defined(CONFIG_SERIAL_BFIN_PIO)
 # define UART_GET_ANOMALY_THRESHOLD(uart)    ((uart)->anomaly_threshold)
 # define UART_SET_ANOMALY_THRESHOLD(uart, v) ((uart)->anomaly_threshold = (v))
 #else
@@ -237,7 +239,7 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
 	}
 #endif
 
-	if (ANOMALY_05000230) {
+	if (ANOMALY_05000363) {
 		/* The BF533 (and BF561) family of processors have a nice anomaly
 		 * where they continuously generate characters for a "single" break.
 		 * We have to basically ignore this flood until the "next" valid
@@ -249,9 +251,6 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
 		 * timeout was picked as it must absolutely be larger than 1
 		 * character time +/- some percent.  So 1.5 sounds good.  All other
 		 * Blackfin families operate properly.  Woo.
-		 * Note: While Anomaly 05000230 does not directly address this,
-		 *       the changes that went in for it also fixed this issue.
-		 *       That anomaly was fixed in 0.5+ silicon.  I like bunnies.
 		 */
 		if (anomaly_start.tv_sec) {
 			struct timeval curr;
@@ -285,7 +284,7 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
 	}
 
 	if (status & BI) {
-		if (ANOMALY_05000230)
+		if (ANOMALY_05000363)
 			if (bfin_revid() < 5)
 				do_gettimeofday(&anomaly_start);
 		uart->port.icount.brk++;
@@ -507,8 +506,7 @@ void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart)
 		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
 	}
 
-	uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
-	add_timer(&(uart->rx_dma_timer));
+	mod_timer(&(uart->rx_dma_timer), jiffies + DMA_RX_FLUSH_JIFFIES);
 }
 
 static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
@@ -551,9 +549,7 @@ static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
 	clear_dma_irqstat(uart->rx_dma_channel);
 	spin_unlock(&uart->port.lock);
 
-	del_timer(&(uart->rx_dma_timer));
-	uart->rx_dma_timer.expires = jiffies;
-	add_timer(&(uart->rx_dma_timer));
+	mod_timer(&(uart->rx_dma_timer), jiffies);
 
 	return IRQ_HANDLED;
 }
@@ -749,7 +745,7 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
 	unsigned long flags;
 	unsigned int baud, quot;
-	unsigned short val, ier, lsr, lcr = 0;
+	unsigned short val, ier, lcr = 0;
 
 	switch (termios->c_cflag & CSIZE) {
 	case CS8:
@@ -806,10 +802,6 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	UART_SET_ANOMALY_THRESHOLD(uart, USEC_PER_SEC / baud * 15);
 
-	do {
-		lsr = UART_GET_LSR(uart);
-	} while (!(lsr & TEMT));
-
 	/* Disable UART */
 	ier = UART_GET_IER(uart);
 #ifdef CONFIG_BF54x
@@ -900,6 +892,31 @@ bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
 	return 0;
 }
 
+/*
+ * Enable the IrDA function if tty->ldisc.num is N_IRDA.
+ * In other cases, disable IrDA function.
+ */
+static void bfin_set_ldisc(struct tty_struct *tty)
+{
+	int line = tty->index;
+	unsigned short val;
+
+	if (line >= tty->driver->num)
+		return;
+
+	switch (tty->ldisc.num) {
+	case N_IRDA:
+		val = UART_GET_GCTL(&bfin_serial_ports[line]);
+		val |= (IREN | RPOLC);
+		UART_PUT_GCTL(&bfin_serial_ports[line], val);
+		break;
+	default:
+		val = UART_GET_GCTL(&bfin_serial_ports[line]);
+		val &= ~(IREN | RPOLC);
+		UART_PUT_GCTL(&bfin_serial_ports[line], val);
+	}
+}
+
 static struct uart_ops bfin_serial_pops = {
 	.tx_empty	= bfin_serial_tx_empty,
 	.set_mctrl	= bfin_serial_set_mctrl,
@@ -1172,7 +1189,7 @@ static struct uart_driver bfin_serial_reg = {
 	.dev_name		= BFIN_SERIAL_NAME,
 	.major			= BFIN_SERIAL_MAJOR,
 	.minor			= BFIN_SERIAL_MINOR,
-	.nr			= NR_PORTS,
+	.nr			= BFIN_UART_NR_PORTS,
 	.cons			= BFIN_SERIAL_CONSOLE,
 };
 
@@ -1261,6 +1278,7 @@ static int __init bfin_serial_init(void)
 
 	ret = uart_register_driver(&bfin_serial_reg);
 	if (ret == 0) {
+		bfin_serial_reg.tty_driver->set_ldisc = bfin_set_ldisc;
 		ret = platform_driver_register(&bfin_serial_driver);
 		if (ret) {
 			pr_debug("uart register failed\n");