Merge commit 'origin/master' into next

9 files changed, 229 insertions, 14 deletions

diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 2724d628527..266b858b8f8 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -347,7 +347,7 @@ static void __exit hvcs_module_exit(void);
 
 static inline struct hvcs_struct *from_vio_dev(struct vio_dev *viod)
 {
-	return viod->dev.driver_data;
+	return dev_get_drvdata(&viod->dev);
 }
 /* The sysfs interface for the driver and devices */
 
@@ -785,7 +785,7 @@ static int __devinit hvcs_probe(
 	kref_init(&hvcsd->kref);
 
 	hvcsd->vdev = dev;
-	dev->dev.driver_data = hvcsd;
+	dev_set_drvdata(&dev->dev, hvcsd);
 
 	hvcsd->index = index;
 
@@ -831,7 +831,7 @@ static int __devinit hvcs_probe(
 
 static int __devexit hvcs_remove(struct vio_dev *dev)
 {
-	struct hvcs_struct *hvcsd = dev->dev.driver_data;
+	struct hvcs_struct *hvcsd = dev_get_drvdata(&dev->dev);
 	unsigned long flags;
 	struct tty_struct *tty;
 
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index f4b3f7293fe..ce66a70184f 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -149,6 +149,19 @@ config HW_RANDOM_VIRTIO
 	  To compile this driver as a module, choose M here: the
 	  module will be called virtio-rng.  If unsure, say N.
 
+config HW_RANDOM_TX4939
+	tristate "TX4939 Random Number Generator support"
+	depends on HW_RANDOM && SOC_TX4939
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on TX4939 SoC.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tx4939-rng.
+
+	  If unsure, say Y.
+
 config HW_RANDOM_MXC_RNGA
 	tristate "Freescale i.MX RNGA Random Number Generator"
 	depends on HW_RANDOM && ARCH_HAS_RNGA
diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile
index fd1ecd2f673..676828ba812 100644
--- a/drivers/char/hw_random/Makefile
+++ b/drivers/char/hw_random/Makefile
@@ -15,4 +15,5 @@ obj-$(CONFIG_HW_RANDOM_IXP4XX) += ixp4xx-rng.o
 obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o
 obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o
 obj-$(CONFIG_HW_RANDOM_VIRTIO) += virtio-rng.o
+obj-$(CONFIG_HW_RANDOM_TX4939) += tx4939-rng.o
 obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index e5d583c84e4..fc93e2fc7c7 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -153,6 +153,7 @@ static const struct file_operations rng_chrdev_ops = {
 static struct miscdevice rng_miscdev = {
 	.minor		= RNG_MISCDEV_MINOR,
 	.name		= RNG_MODULE_NAME,
+	.devnode	= "hwrng",
 	.fops		= &rng_chrdev_ops,
 };
 
diff --git a/drivers/char/hw_random/tx4939-rng.c b/drivers/char/hw_random/tx4939-rng.c
new file mode 100644
index 00000000000..544d9085a8e
--- /dev/null
+++ b/drivers/char/hw_random/tx4939-rng.c
@@ -0,0 +1,184 @@
+/*
+ * RNG driver for TX4939 Random Number Generators (RNG)
+ *
+ * Copyright (C) 2009 Atsushi Nemoto <anemo@mba.ocn.ne.jp>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/hw_random.h>
+
+#define TX4939_RNG_RCSR		0x00000000
+#define TX4939_RNG_ROR(n)	(0x00000018 + (n) * 8)
+
+#define TX4939_RNG_RCSR_INTE	0x00000008
+#define TX4939_RNG_RCSR_RST	0x00000004
+#define TX4939_RNG_RCSR_FIN	0x00000002
+#define TX4939_RNG_RCSR_ST	0x00000001
+
+struct tx4939_rng {
+	struct hwrng rng;
+	void __iomem *base;
+	u64 databuf[3];
+	unsigned int data_avail;
+};
+
+static void rng_io_start(void)
+{
+#ifndef CONFIG_64BIT
+	/*
+	 * readq is reading a 64-bit register using a 64-bit load.  On
+	 * a 32-bit kernel however interrupts or any other processor
+	 * exception would clobber the upper 32-bit of the processor
+	 * register so interrupts need to be disabled.
+	 */
+	local_irq_disable();
+#endif
+}
+
+static void rng_io_end(void)
+{
+#ifndef CONFIG_64BIT
+	local_irq_enable();
+#endif
+}
+
+static u64 read_rng(void __iomem *base, unsigned int offset)
+{
+	return ____raw_readq(base + offset);
+}
+
+static void write_rng(u64 val, void __iomem *base, unsigned int offset)
+{
+	return ____raw_writeq(val, base + offset);
+}
+
+static int tx4939_rng_data_present(struct hwrng *rng, int wait)
+{
+	struct tx4939_rng *rngdev = container_of(rng, struct tx4939_rng, rng);
+	int i;
+
+	if (rngdev->data_avail)
+		return rngdev->data_avail;
+	for (i = 0; i < 20; i++) {
+		rng_io_start();
+		if (!(read_rng(rngdev->base, TX4939_RNG_RCSR)
+		      & TX4939_RNG_RCSR_ST)) {
+			rngdev->databuf[0] =
+				read_rng(rngdev->base, TX4939_RNG_ROR(0));
+			rngdev->databuf[1] =
+				read_rng(rngdev->base, TX4939_RNG_ROR(1));
+			rngdev->databuf[2] =
+				read_rng(rngdev->base, TX4939_RNG_ROR(2));
+			rngdev->data_avail =
+				sizeof(rngdev->databuf) / sizeof(u32);
+			/* Start RNG */
+			write_rng(TX4939_RNG_RCSR_ST,
+				  rngdev->base, TX4939_RNG_RCSR);
+			wait = 0;
+		}
+		rng_io_end();
+		if (!wait)
+			break;
+		/* 90 bus clock cycles by default for generation */
+		ndelay(90 * 5);
+	}
+	return rngdev->data_avail;
+}
+
+static int tx4939_rng_data_read(struct hwrng *rng, u32 *buffer)
+{
+	struct tx4939_rng *rngdev = container_of(rng, struct tx4939_rng, rng);
+
+	rngdev->data_avail--;
+	*buffer = *((u32 *)&rngdev->databuf + rngdev->data_avail);
+	return sizeof(u32);
+}
+
+static int __init tx4939_rng_probe(struct platform_device *dev)
+{
+	struct tx4939_rng *rngdev;
+	struct resource *r;
+	int i;
+
+	r = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (!r)
+		return -EBUSY;
+	rngdev = devm_kzalloc(&dev->dev, sizeof(*rngdev), GFP_KERNEL);
+	if (!rngdev)
+		return -ENOMEM;
+	if (!devm_request_mem_region(&dev->dev, r->start, resource_size(r),
+				     dev_name(&dev->dev)))
+		return -EBUSY;
+	rngdev->base = devm_ioremap(&dev->dev, r->start, resource_size(r));
+	if (!rngdev->base)
+		return -EBUSY;
+
+	rngdev->rng.name = dev_name(&dev->dev);
+	rngdev->rng.data_present = tx4939_rng_data_present;
+	rngdev->rng.data_read = tx4939_rng_data_read;
+
+	rng_io_start();
+	/* Reset RNG */
+	write_rng(TX4939_RNG_RCSR_RST, rngdev->base, TX4939_RNG_RCSR);
+	write_rng(0, rngdev->base, TX4939_RNG_RCSR);
+	/* Start RNG */
+	write_rng(TX4939_RNG_RCSR_ST, rngdev->base, TX4939_RNG_RCSR);
+	rng_io_end();
+	/*
+	 * Drop first two results.  From the datasheet:
+	 * The quality of the random numbers generated immediately
+	 * after reset can be insufficient.  Therefore, do not use
+	 * random numbers obtained from the first and second
+	 * generations; use the ones from the third or subsequent
+	 * generation.
+	 */
+	for (i = 0; i < 2; i++) {
+		rngdev->data_avail = 0;
+		if (!tx4939_rng_data_present(&rngdev->rng, 1))
+			return -EIO;
+	}
+
+	platform_set_drvdata(dev, rngdev);
+	return hwrng_register(&rngdev->rng);
+}
+
+static int __exit tx4939_rng_remove(struct platform_device *dev)
+{
+	struct tx4939_rng *rngdev = platform_get_drvdata(dev);
+
+	hwrng_unregister(&rngdev->rng);
+	platform_set_drvdata(dev, NULL);
+	return 0;
+}
+
+static struct platform_driver tx4939_rng_driver = {
+	.driver		= {
+		.name	= "tx4939-rng",
+		.owner	= THIS_MODULE,
+	},
+	.remove = tx4939_rng_remove,
+};
+
+static int __init tx4939rng_init(void)
+{
+	return platform_driver_probe(&tx4939_rng_driver, tx4939_rng_probe);
+}
+
+static void __exit tx4939rng_exit(void)
+{
+	platform_driver_unregister(&tx4939_rng_driver);
+}
+
+module_init(tx4939rng_init);
+module_exit(tx4939rng_exit);
+
+MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver for TX4939");
+MODULE_LICENSE("GPL");
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 259644646b8..d2e698096ac 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -2375,14 +2375,14 @@ static int __devinit ipmi_of_probe(struct of_device *dev,
 		info->io.addr_data, info->io.regsize, info->io.regspacing,
 		info->irq);
 
-	dev->dev.driver_data = (void *) info;
+	dev_set_drvdata(&dev->dev, info);
 
 	return try_smi_init(info);
 }
 
 static int __devexit ipmi_of_remove(struct of_device *dev)
 {
-	cleanup_one_si(dev->dev.driver_data);
+	cleanup_one_si(dev_get_drvdata(&dev->dev));
 	return 0;
 }
 
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index a5e0db9d766..62c99fa59e2 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -168,7 +168,6 @@ static const struct file_operations misc_fops = {
 	.open		= misc_open,
 };
 
-
 /**
  *	misc_register	-	register a miscellaneous device
  *	@misc: device structure
@@ -217,8 +216,8 @@ int misc_register(struct miscdevice * misc)
 		misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7);
 	dev = MKDEV(MISC_MAJOR, misc->minor);
 
-	misc->this_device = device_create(misc_class, misc->parent, dev, NULL,
-					  "%s", misc->name);
+	misc->this_device = device_create(misc_class, misc->parent, dev,
+					  misc, "%s", misc->name);
 	if (IS_ERR(misc->this_device)) {
 		err = PTR_ERR(misc->this_device);
 		goto out;
@@ -264,6 +263,15 @@ int misc_deregister(struct miscdevice *misc)
 EXPORT_SYMBOL(misc_register);
 EXPORT_SYMBOL(misc_deregister);
 
+static char *misc_nodename(struct device *dev)
+{
+	struct miscdevice *c = dev_get_drvdata(dev);
+
+	if (c->devnode)
+		return kstrdup(c->devnode, GFP_KERNEL);
+	return NULL;
+}
+
 static int __init misc_init(void)
 {
 	int err;
@@ -279,6 +287,7 @@ static int __init misc_init(void)
 	err = -EIO;
 	if (register_chrdev(MISC_MAJOR,"misc",&misc_fops))
 		goto fail_printk;
+	misc_class->nodename = misc_nodename;
 	return 0;
 
 fail_printk:
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index db32f0e4c7d..05f9d18b936 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -261,6 +261,11 @@ static const struct file_operations raw_ctl_fops = {
 
 static struct cdev raw_cdev;
 
+static char *raw_nodename(struct device *dev)
+{
+	return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));
+}
+
 static int __init raw_init(void)
 {
 	dev_t dev = MKDEV(RAW_MAJOR, 0);
@@ -284,6 +289,7 @@ static int __init raw_init(void)
 		ret = PTR_ERR(raw_class);
 		goto error_region;
 	}
+	raw_class->nodename = raw_nodename;
 	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
 
 	return 0;
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index c796a86ab7f..d9113b4c76e 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -171,8 +171,9 @@ int do_poke_blanked_console;
 int console_blanked;
 
 static int vesa_blank_mode; /* 0:none 1:suspendV 2:suspendH 3:powerdown */
-static int blankinterval = 10*60*HZ;
 static int vesa_off_interval;
+static int blankinterval = 10*60;
+core_param(consoleblank, blankinterval, int, 0444);
 
 static DECLARE_WORK(console_work, console_callback);
 
@@ -1485,7 +1486,7 @@ static void setterm_command(struct vc_data *vc)
 			update_attr(vc);
 			break;
 		case 9:	/* set blanking interval */
-			blankinterval = ((vc->vc_par[1] < 60) ? vc->vc_par[1] : 60) * 60 * HZ;
+			blankinterval = ((vc->vc_par[1] < 60) ? vc->vc_par[1] : 60) * 60;
 			poke_blanked_console();
 			break;
 		case 10: /* set bell frequency in Hz */
@@ -2871,7 +2872,7 @@ static int __init con_init(void)
 
 	if (blankinterval) {
 		blank_state = blank_normal_wait;
-		mod_timer(&console_timer, jiffies + blankinterval);
+		mod_timer(&console_timer, jiffies + (blankinterval * HZ));
 	}
 
 	for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
@@ -3677,7 +3678,7 @@ void do_unblank_screen(int leaving_gfx)
 		return; /* but leave console_blanked != 0 */
 
 	if (blankinterval) {
-		mod_timer(&console_timer, jiffies + blankinterval);
+		mod_timer(&console_timer, jiffies + (blankinterval * HZ));
 		blank_state = blank_normal_wait;
 	}
 
@@ -3711,7 +3712,7 @@ void unblank_screen(void)
 static void blank_screen_t(unsigned long dummy)
 {
 	if (unlikely(!keventd_up())) {
-		mod_timer(&console_timer, jiffies + blankinterval);
+		mod_timer(&console_timer, jiffies + (blankinterval * HZ));
 		return;
 	}
 	blank_timer_expired = 1;
@@ -3741,7 +3742,7 @@ void poke_blanked_console(void)
 	if (console_blanked)
 		unblank_screen();
 	else if (blankinterval) {
-		mod_timer(&console_timer, jiffies + blankinterval);
+		mod_timer(&console_timer, jiffies + (blankinterval * HZ));
 		blank_state = blank_normal_wait;
 	}
 }