Merge branch 'for-4.12/dax' into libnvdimm-for-next

69 files changed, 3880 insertions, 1439 deletions

diff --git a/drivers/Makefile b/drivers/Makefile
index 2eced9afba53..0442e982cf35 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -71,7 +71,7 @@ obj-$(CONFIG_PARPORT)		+= parport/
 obj-$(CONFIG_NVM)		+= lightnvm/
 obj-y				+= base/ block/ misc/ mfd/ nfc/
 obj-$(CONFIG_LIBNVDIMM)		+= nvdimm/
-obj-$(CONFIG_DEV_DAX)		+= dax/
+obj-$(CONFIG_DAX)		+= dax/
 obj-$(CONFIG_DMA_SHARED_BUFFER) += dma-buf/
 obj-$(CONFIG_NUBUS)		+= nubus/
 obj-y				+= macintosh/
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 891bd49ada0b..656acb5d7166 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1849,8 +1849,7 @@ static int acpi_nfit_blk_single_io(struct nfit_blk *nfit_blk,
 				mmio_flush_range((void __force *)
 					mmio->addr.aperture + offset, c);
 
-			memcpy_from_pmem(iobuf + copied,
-					mmio->addr.aperture + offset, c);
+			memcpy(iobuf + copied, mmio->addr.aperture + offset, c);
 		}
 
 		copied += c;
diff --git a/drivers/android/Kconfig b/drivers/android/Kconfig
index a82fc022d34b..832e885349b1 100644
--- a/drivers/android/Kconfig
+++ b/drivers/android/Kconfig
@@ -22,7 +22,7 @@ config ANDROID_BINDER_IPC
 config ANDROID_BINDER_DEVICES
 	string "Android Binder devices"
 	depends on ANDROID_BINDER_IPC
-	default "binder"
+	default "binder,hwbinder"
 	---help---
 	  Default value for the binder.devices parameter.
 
diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
index 8a8e403644d6..c317dc515617 100644
--- a/drivers/auxdisplay/Kconfig
+++ b/drivers/auxdisplay/Kconfig
@@ -13,8 +13,22 @@ menuconfig AUXDISPLAY
 
 	  If you say N, all options in this submenu will be skipped and disabled.
 
+config CHARLCD
+	tristate "Character LCD core support" if COMPILE_TEST
+
 if AUXDISPLAY
 
+config HD44780
+	tristate "HD44780 Character LCD support"
+	depends on GPIOLIB || COMPILE_TEST
+	select CHARLCD
+	---help---
+	  Enable support for Character LCDs using a HD44780 controller.
+	  The LCD is accessible through the /dev/lcd char device (10, 156).
+	  This code can either be compiled as a module, or linked into the
+	  kernel and started at boot.
+	  If you don't understand what all this is about, say N.
+
 config KS0108
 	tristate "KS0108 LCD Controller"
 	depends on PARPORT_PC
diff --git a/drivers/auxdisplay/Makefile b/drivers/auxdisplay/Makefile
index cb3dd847713b..fcefa686be0f 100644
--- a/drivers/auxdisplay/Makefile
+++ b/drivers/auxdisplay/Makefile
@@ -2,7 +2,9 @@
 # Makefile for the kernel auxiliary displays device drivers.
 #
 
+obj-$(CONFIG_CHARLCD)		+= charlcd.o
 obj-$(CONFIG_KS0108)		+= ks0108.o
 obj-$(CONFIG_CFAG12864B)	+= cfag12864b.o cfag12864bfb.o
 obj-$(CONFIG_IMG_ASCII_LCD)	+= img-ascii-lcd.o
+obj-$(CONFIG_HD44780)		+= hd44780.o
 obj-$(CONFIG_HT16K33)		+= ht16k33.o
diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c
new file mode 100644
index 000000000000..cfeb049a01ef
--- /dev/null
+++ b/drivers/auxdisplay/charlcd.c
@@ -0,0 +1,818 @@
+/*
+ * Character LCD driver for Linux
+ *
+ * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu>
+ * Copyright (C) 2016-2017 Glider bvba
+ *
+ * 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.
+ */
+
+#include <linux/atomic.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/workqueue.h>
+
+#include <generated/utsrelease.h>
+
+#include <misc/charlcd.h>
+
+#define LCD_MINOR		156
+
+#define DEFAULT_LCD_BWIDTH      40
+#define DEFAULT_LCD_HWIDTH      64
+
+/* Keep the backlight on this many seconds for each flash */
+#define LCD_BL_TEMPO_PERIOD	4
+
+#define LCD_FLAG_B		0x0004	/* Blink on */
+#define LCD_FLAG_C		0x0008	/* Cursor on */
+#define LCD_FLAG_D		0x0010	/* Display on */
+#define LCD_FLAG_F		0x0020	/* Large font mode */
+#define LCD_FLAG_N		0x0040	/* 2-rows mode */
+#define LCD_FLAG_L		0x0080	/* Backlight enabled */
+
+/* LCD commands */
+#define LCD_CMD_DISPLAY_CLEAR	0x01	/* Clear entire display */
+
+#define LCD_CMD_ENTRY_MODE	0x04	/* Set entry mode */
+#define LCD_CMD_CURSOR_INC	0x02	/* Increment cursor */
+
+#define LCD_CMD_DISPLAY_CTRL	0x08	/* Display control */
+#define LCD_CMD_DISPLAY_ON	0x04	/* Set display on */
+#define LCD_CMD_CURSOR_ON	0x02	/* Set cursor on */
+#define LCD_CMD_BLINK_ON	0x01	/* Set blink on */
+
+#define LCD_CMD_SHIFT		0x10	/* Shift cursor/display */
+#define LCD_CMD_DISPLAY_SHIFT	0x08	/* Shift display instead of cursor */
+#define LCD_CMD_SHIFT_RIGHT	0x04	/* Shift display/cursor to the right */
+
+#define LCD_CMD_FUNCTION_SET	0x20	/* Set function */
+#define LCD_CMD_DATA_LEN_8BITS	0x10	/* Set data length to 8 bits */
+#define LCD_CMD_TWO_LINES	0x08	/* Set to two display lines */
+#define LCD_CMD_FONT_5X10_DOTS	0x04	/* Set char font to 5x10 dots */
+
+#define LCD_CMD_SET_CGRAM_ADDR	0x40	/* Set char generator RAM address */
+
+#define LCD_CMD_SET_DDRAM_ADDR	0x80	/* Set display data RAM address */
+
+#define LCD_ESCAPE_LEN		24	/* Max chars for LCD escape command */
+#define LCD_ESCAPE_CHAR		27	/* Use char 27 for escape command */
+
+struct charlcd_priv {
+	struct charlcd lcd;
+
+	struct delayed_work bl_work;
+	struct mutex bl_tempo_lock;	/* Protects access to bl_tempo */
+	bool bl_tempo;
+
+	bool must_clear;
+
+	/* contains the LCD config state */
+	unsigned long int flags;
+
+	/* Contains the LCD X and Y offset */
+	struct {
+		unsigned long int x;
+		unsigned long int y;
+	} addr;
+
+	/* Current escape sequence and it's length or -1 if outside */
+	struct {
+		char buf[LCD_ESCAPE_LEN + 1];
+		int len;
+	} esc_seq;
+
+	unsigned long long drvdata[0];
+};
+
+#define to_priv(p)	container_of(p, struct charlcd_priv, lcd)
+
+/* Device single-open policy control */
+static atomic_t charlcd_available = ATOMIC_INIT(1);
+
+/* sleeps that many milliseconds with a reschedule */
+static void long_sleep(int ms)
+{
+	if (in_interrupt())
+		mdelay(ms);
+	else
+		schedule_timeout_interruptible(msecs_to_jiffies(ms));
+}
+
+/* turn the backlight on or off */
+static void charlcd_backlight(struct charlcd *lcd, int on)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+
+	if (!lcd->ops->backlight)
+		return;
+
+	mutex_lock(&priv->bl_tempo_lock);
+	if (!priv->bl_tempo)
+		lcd->ops->backlight(lcd, on);
+	mutex_unlock(&priv->bl_tempo_lock);
+}
+
+static void charlcd_bl_off(struct work_struct *work)
+{
+	struct delayed_work *dwork = to_delayed_work(work);
+	struct charlcd_priv *priv =
+		container_of(dwork, struct charlcd_priv, bl_work);
+
+	mutex_lock(&priv->bl_tempo_lock);
+	if (priv->bl_tempo) {
+		priv->bl_tempo = false;
+		if (!(priv->flags & LCD_FLAG_L))
+			priv->lcd.ops->backlight(&priv->lcd, 0);
+	}
+	mutex_unlock(&priv->bl_tempo_lock);
+}
+
+/* turn the backlight on for a little while */
+void charlcd_poke(struct charlcd *lcd)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+
+	if (!lcd->ops->backlight)
+		return;
+
+	cancel_delayed_work_sync(&priv->bl_work);
+
+	mutex_lock(&priv->bl_tempo_lock);
+	if (!priv->bl_tempo && !(priv->flags & LCD_FLAG_L))
+		lcd->ops->backlight(lcd, 1);
+	priv->bl_tempo = true;
+	schedule_delayed_work(&priv->bl_work, LCD_BL_TEMPO_PERIOD * HZ);
+	mutex_unlock(&priv->bl_tempo_lock);
+}
+EXPORT_SYMBOL_GPL(charlcd_poke);
+
+static void charlcd_gotoxy(struct charlcd *lcd)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+	unsigned int addr;
+
+	/*
+	 * we force the cursor to stay at the end of the
+	 * line if it wants to go farther
+	 */
+	addr = priv->addr.x < lcd->bwidth ? priv->addr.x & (lcd->hwidth - 1)
+					  : lcd->bwidth - 1;
+	if (priv->addr.y & 1)
+		addr += lcd->hwidth;
+	if (priv->addr.y & 2)
+		addr += lcd->bwidth;
+	lcd->ops->write_cmd(lcd, LCD_CMD_SET_DDRAM_ADDR | addr);
+}
+
+static void charlcd_home(struct charlcd *lcd)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+
+	priv->addr.x = 0;
+	priv->addr.y = 0;
+	charlcd_gotoxy(lcd);
+}
+
+static void charlcd_print(struct charlcd *lcd, char c)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+
+	if (priv->addr.x < lcd->bwidth) {
+		if (lcd->char_conv)
+			c = lcd->char_conv[(unsigned char)c];
+		lcd->ops->write_data(lcd, c);
+		priv->addr.x++;
+	}
+	/* prevents the cursor from wrapping onto the next line */
+	if (priv->addr.x == lcd->bwidth)
+		charlcd_gotoxy(lcd);
+}
+
+static void charlcd_clear_fast(struct charlcd *lcd)
+{
+	int pos;
+
+	charlcd_home(lcd);
+
+	if (lcd->ops->clear_fast)
+		lcd->ops->clear_fast(lcd);
+	else
+		for (pos = 0; pos < min(2, lcd->height) * lcd->hwidth; pos++)
+			lcd->ops->write_data(lcd, ' ');
+
+	charlcd_home(lcd);
+}
+
+/* clears the display and resets X/Y */
+static void charlcd_clear_display(struct charlcd *lcd)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+
+	lcd->ops->write_cmd(lcd, LCD_CMD_DISPLAY_CLEAR);
+	priv->addr.x = 0;
+	priv->addr.y = 0;
+	/* we must wait a few milliseconds (15) */
+	long_sleep(15);
+}
+
+static int charlcd_init_display(struct charlcd *lcd)
+{
+	void (*write_cmd_raw)(struct charlcd *lcd, int cmd);
+	struct charlcd_priv *priv = to_priv(lcd);
+	u8 init;
+
+	if (lcd->ifwidth != 4 && lcd->ifwidth != 8)
+		return -EINVAL;
+
+	priv->flags = ((lcd->height > 1) ? LCD_FLAG_N : 0) | LCD_FLAG_D |
+		      LCD_FLAG_C | LCD_FLAG_B;
+
+	long_sleep(20);		/* wait 20 ms after power-up for the paranoid */
+
+	/*
+	 * 8-bit mode, 1 line, small fonts; let's do it 3 times, to make sure
+	 * the LCD is in 8-bit mode afterwards
+	 */
+	init = LCD_CMD_FUNCTION_SET | LCD_CMD_DATA_LEN_8BITS;
+	if (lcd->ifwidth == 4) {
+		init >>= 4;
+		write_cmd_raw = lcd->ops->write_cmd_raw4;
+	} else {
+		write_cmd_raw = lcd->ops->write_cmd;
+	}
+	write_cmd_raw(lcd, init);
+	long_sleep(10);
+	write_cmd_raw(lcd, init);
+	long_sleep(10);
+	write_cmd_raw(lcd, init);
+	long_sleep(10);
+
+	if (lcd->ifwidth == 4) {
+		/* Switch to 4-bit mode, 1 line, small fonts */
+		lcd->ops->write_cmd_raw4(lcd, LCD_CMD_FUNCTION_SET >> 4);
+		long_sleep(10);
+	}
+
+	/* set font height and lines number */
+	lcd->ops->write_cmd(lcd,
+		LCD_CMD_FUNCTION_SET |
+		((lcd->ifwidth == 8) ? LCD_CMD_DATA_LEN_8BITS : 0) |
+		((priv->flags & LCD_FLAG_F) ? LCD_CMD_FONT_5X10_DOTS : 0) |
+		((priv->flags & LCD_FLAG_N) ? LCD_CMD_TWO_LINES : 0));
+	long_sleep(10);
+
+	/* display off, cursor off, blink off */
+	lcd->ops->write_cmd(lcd, LCD_CMD_DISPLAY_CTRL);
+	long_sleep(10);
+
+	lcd->ops->write_cmd(lcd,
+		LCD_CMD_DISPLAY_CTRL |	/* set display mode */
+		((priv->flags & LCD_FLAG_D) ? LCD_CMD_DISPLAY_ON : 0) |
+		((priv->flags & LCD_FLAG_C) ? LCD_CMD_CURSOR_ON : 0) |
+		((priv->flags & LCD_FLAG_B) ? LCD_CMD_BLINK_ON : 0));
+
+	charlcd_backlight(lcd, (priv->flags & LCD_FLAG_L) ? 1 : 0);
+
+	long_sleep(10);
+
+	/* entry mode set : increment, cursor shifting */
+	lcd->ops->write_cmd(lcd, LCD_CMD_ENTRY_MODE | LCD_CMD_CURSOR_INC);
+
+	charlcd_clear_display(lcd);
+	return 0;
+}
+
+/*
+ * These are the file operation function for user access to /dev/lcd
+ * This function can also be called from inside the kernel, by
+ * setting file and ppos to NULL.
+ *
+ */
+
+static inline int handle_lcd_special_code(struct charlcd *lcd)
+{
+	struct charlcd_priv *priv = to_priv(lcd);
+
+	/* LCD special codes */
+
+	int processed = 0;
+
+	char *esc = priv->esc_seq.buf + 2;
+	int oldflags = priv->flags;
+
+	/* check for display mode flags */
+	switch (*esc) {
+	case 'D':	/* Display ON */
+		priv->flags |= LCD_FLAG_D;
+		processed = 1;
+		break;
+	case 'd':	/* Display OFF */
+		priv->flags &= ~LCD_FLAG_D;
+		processed = 1;
+		break;
+	case 'C':	/* Cursor ON */
+		priv->flags |= LCD_FLAG_C;
+		processed = 1;
+		break;
+	case 'c':	/* Cursor OFF */
+		priv->flags &= ~LCD_FLAG_C;
+		processed = 1;
+		break;
+	case 'B':	/* Blink ON */
+		priv->flags |= LCD_FLAG_B;
+		processed = 1;
+		break;
+	case 'b':	/* Blink OFF */
+		priv->flags &= ~LCD_FLAG_B;
+		processed = 1;
+		break;
+	case '+':	/* Back light ON */
+		priv->flags |= LCD_FLAG_L;
+		processed = 1;
+		break;
+	case '-':	/* Back light OFF */
+		priv->flags &= ~LCD_FLAG_L;
+		processed = 1;
+		break;
+	case '*':	/* Flash back light */
+		charlcd_poke(lcd);
+		processed = 1;
+		break;
+	case 'f':	/* Small Font */
+		priv->flags &= ~LCD_FLAG_F;
+		processed = 1;
+		break;
+	case 'F':	/* Large Font */
+		priv->flags |= LCD_FLAG_F;
+		processed = 1;
+		break;
+	case 'n':	/* One Line */
+		priv->flags &= ~LCD_FLAG_N;
+		processed = 1;
+		break;
+	case 'N':	/* Two Lines */
+		priv->flags |= LCD_FLAG_N;
+		break;
+	case 'l':	/* Shift Cursor Left */
+		if (priv->addr.x > 0) {
+			/* back one char if not at end of line */
+			if (priv->addr.x < lcd->bwidth)
+				lcd->ops->write_cmd(lcd, LCD_CMD_SHIFT);
+			priv->addr.x--;
+		}
+		processed = 1;
+		break;
+	case 'r':	/* shift cursor right */
+		if (priv->addr.x < lcd->width) {
+			/* allow the cursor to pass the end of the line */
+			if (priv->addr.x < (lcd->bwidth - 1))
+				lcd->ops->write_cmd(lcd,
+					LCD_CMD_SHIFT | LCD_CMD_SHIFT_RIGHT);
+			priv->addr.x++;
+		}
+		processed = 1;
+		break;
+	case 'L':	/* shift display left */
+		lcd->ops->write_cmd(lcd, LCD_CMD_SHIFT | LCD_CMD_DISPLAY_SHIFT);
+		processed = 1;
+		break;
+	case 'R':	/* shift display right */
+		lcd->ops->write_cmd(lcd,
+				    LCD_CMD_SHIFT | LCD_CMD_DISPLAY_SHIFT |
+				    LCD_CMD_SHIFT_RIGHT);
+		processed = 1;
+		break;
+	case 'k': {	/* kill end of line */
+		int x;
+
+		for (x = priv->addr.x; x < lcd->bwidth; x++)
+			lcd->ops->write_data(lcd, ' ');
+
+		/* restore cursor position */
+		charlcd_gotoxy(lcd);
+		processed = 1;
+		break;
+	}
+	case 'I':	/* reinitialize display */
+		charlcd_init_display(lcd);
+		processed = 1;
+		break;
+	case 'G': {
+		/* Generator : LGcxxxxx...xx; must have <c> between '0'
+		 * and '7', representing the numerical ASCII code of the
+		 * redefined character, and <xx...xx> a sequence of 16
+		 * hex digits representing 8 bytes for each character.
+		 * Most LCDs will only use 5 lower bits of the 7 first
+		 * bytes.
+		 */
+
+		unsigned char cgbytes[8];
+		unsigned char cgaddr;
+		int cgoffset;
+		int shift;
+		char value;
+		int addr;
+
+		if (!strchr(esc, ';'))
+			break;
+
+		esc++;
+
+		cgaddr = *(esc++) - '0';
+		if (cgaddr > 7) {
+			processed = 1;
+			break;
+		}
+
+		cgoffset = 0;
+		shift = 0;
+		value = 0;
+		while (*esc && cgoffset < 8) {
+			shift ^= 4;
+			if (*esc >= '0' && *esc <= '9') {
+				value |= (*esc - '0') << shift;
+			} else if (*esc >= 'A' && *esc <= 'Z') {
+				value |= (*esc - 'A' + 10) << shift;
+			} else if (*esc >= 'a' && *esc <= 'z') {
+				value |= (*esc - 'a' + 10) << shift;
+			} else {
+				esc++;
+				continue;
+			}
+
+			if (shift == 0) {
+				cgbytes[cgoffset++] = value;
+				value = 0;
+			}
+
+			esc++;
+		}
+
+		lcd->ops->write_cmd(lcd, LCD_CMD_SET_CGRAM_ADDR | (cgaddr * 8));
+		for (addr = 0; addr < cgoffset; addr++)
+			lcd->ops->write_data(lcd, cgbytes[addr]);
+
+		/* ensures that we stop writing to CGRAM */
+		charlcd_gotoxy(lcd);
+		processed = 1;
+		break;
+	}
+	case 'x':	/* gotoxy : LxXXX[yYYY]; */
+	case 'y':	/* gotoxy : LyYYY[xXXX]; */
+		if (!strchr(esc, ';'))
+			break;
+
+		while (*esc) {
+			if (*esc == 'x') {
+				esc++;
+				if (kstrtoul(esc, 10, &priv->addr.x) < 0)
+					break;
+			} else if (*esc == 'y') {
+				esc++;
+				if (kstrtoul(esc, 10, &priv->addr.y) < 0)
+					break;
+			} else {
+				break;