Merge remote-tracking branch 'origin/next' into kvm-ppc-next

Conflicts:
	mm/Kconfig

CMA DMA split and ZSWAP introduction were conflicting, fix up manually.

79 files changed, 4727 insertions, 529 deletions

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index f0f8928b3c8..d2b34fbbc42 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -52,6 +52,82 @@ struct evdev_client {
 	struct input_event buffer[];
 };
 
+/* flush queued events of type @type, caller must hold client->buffer_lock */
+static void __evdev_flush_queue(struct evdev_client *client, unsigned int type)
+{
+	unsigned int i, head, num;
+	unsigned int mask = client->bufsize - 1;
+	bool is_report;
+	struct input_event *ev;
+
+	BUG_ON(type == EV_SYN);
+
+	head = client->tail;
+	client->packet_head = client->tail;
+
+	/* init to 1 so a leading SYN_REPORT will not be dropped */
+	num = 1;
+
+	for (i = client->tail; i != client->head; i = (i + 1) & mask) {
+		ev = &client->buffer[i];
+		is_report = ev->type == EV_SYN && ev->code == SYN_REPORT;
+
+		if (ev->type == type) {
+			/* drop matched entry */
+			continue;
+		} else if (is_report && !num) {
+			/* drop empty SYN_REPORT groups */
+			continue;
+		} else if (head != i) {
+			/* move entry to fill the gap */
+			client->buffer[head].time = ev->time;
+			client->buffer[head].type = ev->type;
+			client->buffer[head].code = ev->code;
+			client->buffer[head].value = ev->value;
+		}
+
+		num++;
+		head = (head + 1) & mask;
+
+		if (is_report) {
+			num = 0;
+			client->packet_head = head;
+		}
+	}
+
+	client->head = head;
+}
+
+/* queue SYN_DROPPED event */
+static void evdev_queue_syn_dropped(struct evdev_client *client)
+{
+	unsigned long flags;
+	struct input_event ev;
+	ktime_t time;
+
+	time = ktime_get();
+	if (client->clkid != CLOCK_MONOTONIC)
+		time = ktime_sub(time, ktime_get_monotonic_offset());
+
+	ev.time = ktime_to_timeval(time);
+	ev.type = EV_SYN;
+	ev.code = SYN_DROPPED;
+	ev.value = 0;
+
+	spin_lock_irqsave(&client->buffer_lock, flags);
+
+	client->buffer[client->head++] = ev;
+	client->head &= client->bufsize - 1;
+
+	if (unlikely(client->head == client->tail)) {
+		/* drop queue but keep our SYN_DROPPED event */
+		client->tail = (client->head - 1) & (client->bufsize - 1);
+		client->packet_head = client->tail;
+	}
+
+	spin_unlock_irqrestore(&client->buffer_lock, flags);
+}
+
 static void __pass_event(struct evdev_client *client,
 			 const struct input_event *event)
 {
@@ -650,6 +726,51 @@ static int evdev_handle_set_keycode_v2(struct input_dev *dev, void __user *p)
 	return input_set_keycode(dev, &ke);
 }
 
+/*
+ * If we transfer state to the user, we should flush all pending events
+ * of the same type from the client's queue. Otherwise, they might end up
+ * with duplicate events, which can screw up client's state tracking.
+ * If bits_to_user fails after flushing the queue, we queue a SYN_DROPPED
+ * event so user-space will notice missing events.
+ *
+ * LOCKING:
+ * We need to take event_lock before buffer_lock to avoid dead-locks. But we
+ * need the even_lock only to guarantee consistent state. We can safely release
+ * it while flushing the queue. This allows input-core to handle filters while
+ * we flush the queue.
+ */
+static int evdev_handle_get_val(struct evdev_client *client,
+				struct input_dev *dev, unsigned int type,
+				unsigned long *bits, unsigned int max,
+				unsigned int size, void __user *p, int compat)
+{
+	int ret;
+	unsigned long *mem;
+
+	mem = kmalloc(sizeof(unsigned long) * max, GFP_KERNEL);
+	if (!mem)
+		return -ENOMEM;
+
+	spin_lock_irq(&dev->event_lock);
+	spin_lock(&client->buffer_lock);
+
+	memcpy(mem, bits, sizeof(unsigned long) * max);
+
+	spin_unlock(&dev->event_lock);
+
+	__evdev_flush_queue(client, type);
+
+	spin_unlock_irq(&client->buffer_lock);
+
+	ret = bits_to_user(mem, max, size, p, compat);
+	if (ret < 0)
+		evdev_queue_syn_dropped(client);
+
+	kfree(mem);
+
+	return ret;
+}
+
 static int evdev_handle_mt_request(struct input_dev *dev,
 				   unsigned int size,
 				   int __user *ip)
@@ -771,16 +892,20 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
 		return evdev_handle_mt_request(dev, size, ip);
 
 	case EVIOCGKEY(0):
-		return bits_to_user(dev->key, KEY_MAX, size, p, compat_mode);
+		return evdev_handle_get_val(client, dev, EV_KEY, dev->key,
+					    KEY_MAX, size, p, compat_mode);
 
 	case EVIOCGLED(0):
-		return bits_to_user(dev->led, LED_MAX, size, p, compat_mode);
+		return evdev_handle_get_val(client, dev, EV_LED, dev->led,
+					    LED_MAX, size, p, compat_mode);
 
 	case EVIOCGSND(0):
-		return bits_to_user(dev->snd, SND_MAX, size, p, compat_mode);
+		return evdev_handle_get_val(client, dev, EV_SND, dev->snd,
+					    SND_MAX, size, p, compat_mode);
 
 	case EVIOCGSW(0):
-		return bits_to_user(dev->sw, SW_MAX, size, p, compat_mode);
+		return evdev_handle_get_val(client, dev, EV_SW, dev->sw,
+					    SW_MAX, size, p, compat_mode);
 
 	case EVIOCGNAME(0):
 		return str_to_user(dev->name, size, p);
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 7ac9c9818d5..269d4c3658c 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -418,6 +418,16 @@ config KEYBOARD_NOMADIK
 	  To compile this driver as a module, choose M here: the
 	  module will be called nmk-ske-keypad.
 
+config KEYBOARD_NSPIRE
+	tristate "TI-NSPIRE built-in keyboard"
+	depends on ARCH_NSPIRE && OF
+	select INPUT_MATRIXKMAP
+	help
+	  Say Y here if you want to use the built-in keypad on TI-NSPIRE.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called nspire-keypad.
+
 config KEYBOARD_TEGRA
 	tristate "NVIDIA Tegra internal matrix keyboard controller support"
 	depends on ARCH_TEGRA && OF
@@ -442,6 +452,7 @@ config KEYBOARD_OPENCORES
 config KEYBOARD_PXA27x
 	tristate "PXA27x/PXA3xx keypad support"
 	depends on PXA27x || PXA3xx || ARCH_MMP
+	select INPUT_MATRIXKMAP
 	help
 	  Enable support for PXA27x/PXA3xx keypad controller.
 
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 0c43e8cf8d0..a699b617230 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_KEYBOARD_MCS)		+= mcs_touchkey.o
 obj-$(CONFIG_KEYBOARD_MPR121)		+= mpr121_touchkey.o
 obj-$(CONFIG_KEYBOARD_NEWTON)		+= newtonkbd.o
 obj-$(CONFIG_KEYBOARD_NOMADIK)		+= nomadik-ske-keypad.o
+obj-$(CONFIG_KEYBOARD_NSPIRE)		+= nspire-keypad.o
 obj-$(CONFIG_KEYBOARD_OMAP)		+= omap-keypad.o
 obj-$(CONFIG_KEYBOARD_OMAP4)		+= omap4-keypad.o
 obj-$(CONFIG_KEYBOARD_OPENCORES)	+= opencores-kbd.o
diff --git a/drivers/input/keyboard/amikbd.c b/drivers/input/keyboard/amikbd.c
index ba0b36f7dae..096d6067ae1 100644
--- a/drivers/input/keyboard/amikbd.c
+++ b/drivers/input/keyboard/amikbd.c
@@ -246,7 +246,6 @@ static int __exit amikbd_remove(struct platform_device *pdev)
 {
 	struct input_dev *dev = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
 	free_irq(IRQ_AMIGA_CIAA_SP, dev);
 	input_unregister_device(dev);
 	return 0;
diff --git a/drivers/input/keyboard/bf54x-keys.c b/drivers/input/keyboard/bf54x-keys.c
index 20b9fa91fb9..fc88fb48d70 100644
--- a/drivers/input/keyboard/bf54x-keys.c
+++ b/drivers/input/keyboard/bf54x-keys.c
@@ -326,7 +326,6 @@ out0:
 	kfree(bf54x_kpad->keycode);
 out:
 	kfree(bf54x_kpad);
-	platform_set_drvdata(pdev, NULL);
 
 	return error;
 }
@@ -346,7 +345,6 @@ static int bfin_kpad_remove(struct platform_device *pdev)
 
 	kfree(bf54x_kpad->keycode);
 	kfree(bf54x_kpad);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
diff --git a/drivers/input/keyboard/davinci_keyscan.c b/drivers/input/keyboard/davinci_keyscan.c
index 829753702b6..d15977a8361 100644
--- a/drivers/input/keyboard/davinci_keyscan.c
+++ b/drivers/input/keyboard/davinci_keyscan.c
@@ -314,8 +314,6 @@ static int davinci_ks_remove(struct platform_device *pdev)
 	iounmap(davinci_ks->base);
 	release_mem_region(davinci_ks->pbase, davinci_ks->base_size);
 
-	platform_set_drvdata(pdev, NULL);
-
 	kfree(davinci_ks);
 
 	return 0;
diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c
index 9857e8fd098..47206bdba41 100644
--- a/drivers/input/keyboard/ep93xx_keypad.c
+++ b/drivers/input/keyboard/ep93xx_keypad.c
@@ -329,8 +329,7 @@ static int ep93xx_keypad_probe(struct platform_device *pdev)
 	return 0;
 
 failed_free_irq:
-	free_irq(keypad->irq, pdev);
-	platform_set_drvdata(pdev, NULL);
+	free_irq(keypad->irq, keypad);
 failed_free_dev:
 	input_free_device(input_dev);
 failed_put_clk:
@@ -351,9 +350,7 @@ static int ep93xx_keypad_remove(struct platform_device *pdev)
 	struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
 	struct resource *res;
 
-	free_irq(keypad->irq, pdev);
-
-	platform_set_drvdata(pdev, NULL);
+	free_irq(keypad->irq, keypad);
 
 	if (keypad->enabled)
 		clk_disable(keypad->clk);
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index b29ca651a39..440ce32462b 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -767,7 +767,6 @@ static int gpio_keys_probe(struct platform_device *pdev)
 	while (--i >= 0)
 		gpio_remove_key(&ddata->data[i]);
 
-	platform_set_drvdata(pdev, NULL);
  fail1:
 	input_free_device(input);
 	kfree(ddata);
diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 21147164874..cd5ed9e2216 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -324,7 +324,6 @@ err_free_gpio:
 
 err_free_bdev:
 	kfree(bdev);
-	platform_set_drvdata(pdev, NULL);
 
 err_free_pdata:
 	/* If we have no platform_data, we allocated pdata dynamically.  */
@@ -355,7 +354,6 @@ static int gpio_keys_polled_remove(struct platform_device *pdev)
 		kfree(pdata);
 
 	kfree(bdev);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
diff --git a/drivers/input/keyboard/jornada680_kbd.c b/drivers/input/keyboard/jornada680_kbd.c
index 74e75a6e8de..a2a034c25f0 100644
--- a/drivers/input/keyboard/jornada680_kbd.c
+++ b/drivers/input/keyboard/jornada680_kbd.c
@@ -233,7 +233,6 @@ static int jornada680kbd_probe(struct platform_device *pdev)
  failed:
 	printk(KERN_ERR "Jornadakbd: failed to register driver, error: %d\n",
 		error);
-	platform_set_drvdata(pdev, NULL);
 	input_free_polled_device(poll_dev);
 	kfree(jornadakbd);
 	return error;
@@ -244,7 +243,6 @@ static int jornada680kbd_remove(struct platform_device *pdev)
 {
 	struct jornadakbd *jornadakbd = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
 	input_unregister_polled_device(jornadakbd->poll_dev);
 	input_free_polled_device(jornadakbd->poll_dev);
 	kfree(jornadakbd);
diff --git a/drivers/input/keyboard/jornada720_kbd.c b/drivers/input/keyboard/jornada720_kbd.c
index 5ceef636df2..b0ad457ca9d 100644
--- a/drivers/input/keyboard/jornada720_kbd.c
+++ b/drivers/input/keyboard/jornada720_kbd.c
@@ -146,7 +146,6 @@ static int jornada720_kbd_probe(struct platform_device *pdev)
  fail2:	/* IRQ, DEVICE, MEMORY */
 	free_irq(IRQ_GPIO0, pdev);
  fail1:	/* DEVICE, MEMORY */
-	platform_set_drvdata(pdev, NULL);
 	input_free_device(input_dev);
 	kfree(jornadakbd);
 	return err;
@@ -157,7 +156,6 @@ static int jornada720_kbd_remove(struct platform_device *pdev)
 	struct jornadakbd *jornadakbd = platform_get_drvdata(pdev);
 
 	free_irq(IRQ_GPIO0, pdev);
-	platform_set_drvdata(pdev, NULL);
 	input_unregister_device(jornadakbd->input);
 	kfree(jornadakbd);
 
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 71d77192ac1..90ff73ace42 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -549,8 +549,6 @@ static int matrix_keypad_remove(struct platform_device *pdev)
 	input_unregister_device(keypad->input_dev);
 	kfree(keypad);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 
diff --git a/drivers/input/keyboard/nspire-keypad.c b/drivers/input/keyboard/nspire-keypad.c
new file mode 100644
index 00000000000..20d872d6f60
--- /dev/null
+++ b/drivers/input/keyboard/nspire-keypad.c
@@ -0,0 +1,283 @@
+/*
+ *  Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/input/matrix_keypad.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#define KEYPAD_SCAN_MODE	0x00
+#define KEYPAD_CNTL		0x04
+#define KEYPAD_INT		0x08
+#define KEYPAD_INTMSK		0x0C