Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (36 commits)
  mfd: Clearing events requires event registers to be writable for da9052-core
  mfd: Fix annotations in da9052-core
  gpiolib: Mark da9052 driver broken
  mfd: Declare da9052_regmap_config for the bus drivers
  MFD: DA9052/53 MFD core module add SPI support v2
  MFD: DA9052/53 MFD core module
  regmap: Add irq_base accessor to regmap_irq
  regmap: Allow drivers to reinitialise the register cache at runtime
  regmap: Add trace event for successful cache reads
  regmap: Allow regmap_update_bits() users to detect changes
  regmap: Report if we actually handled an interrupt in regmap-irq
  regmap: Fix rbtreee build when not using debugfs
  regmap: Provide debugfs dump of the rbtree cache data
  regmap: Do debugfs init before cache init
  regmap: Suppress noop writes in regmap_update_bits()
  regmap: Remove indexed cache type
  regmap: Drop check whether a register is readable in regcache_read
  regmap: Properly round cache_word_size
  regmap: Add support for 10/14 register formating
  regmap: Try cached read before checking if a hardware read is possible
  ...

15 files changed, 1557 insertions, 154 deletions

diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig
index 2fc6a66f39a4..0f6c7fb418e8 100644
--- a/drivers/base/regmap/Kconfig
+++ b/drivers/base/regmap/Kconfig
@@ -13,3 +13,6 @@ config REGMAP_I2C
 
 config REGMAP_SPI
 	tristate
+
+config REGMAP_IRQ
+	bool
diff --git a/drivers/base/regmap/Makefile b/drivers/base/regmap/Makefile
index 0573c8a9dacb..defd57963c84 100644
--- a/drivers/base/regmap/Makefile
+++ b/drivers/base/regmap/Makefile
@@ -1,4 +1,6 @@
-obj-$(CONFIG_REGMAP) += regmap.o regcache.o regcache-indexed.o regcache-rbtree.o regcache-lzo.o
+obj-$(CONFIG_REGMAP) += regmap.o regcache.o
+obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o
 obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
 obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
 obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o
+obj-$(CONFIG_REGMAP_IRQ) += regmap-irq.o
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 348ff02eb93e..1a02b7537c8b 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -74,6 +74,7 @@ struct regmap {
 	struct reg_default *reg_defaults;
 	const void *reg_defaults_raw;
 	void *cache;
+	bool cache_dirty;
 };
 
 struct regcache_ops {
@@ -105,7 +106,7 @@ static inline void regmap_debugfs_exit(struct regmap *map) { }
 #endif
 
 /* regcache core declarations */
-int regcache_init(struct regmap *map);
+int regcache_init(struct regmap *map, const struct regmap_config *config);
 void regcache_exit(struct regmap *map);
 int regcache_read(struct regmap *map,
 		       unsigned int reg, unsigned int *value);
@@ -118,10 +119,7 @@ unsigned int regcache_get_val(const void *base, unsigned int idx,
 bool regcache_set_val(void *base, unsigned int idx,
 		      unsigned int val, unsigned int word_size);
 int regcache_lookup_reg(struct regmap *map, unsigned int reg);
-int regcache_insert_reg(struct regmap *map, unsigned int reg,
-			unsigned int val);
 
-extern struct regcache_ops regcache_indexed_ops;
 extern struct regcache_ops regcache_rbtree_ops;
 extern struct regcache_ops regcache_lzo_ops;
 
diff --git a/drivers/base/regmap/regcache-indexed.c b/drivers/base/regmap/regcache-indexed.c
deleted file mode 100644
index 507731ad8ec1..000000000000
--- a/drivers/base/regmap/regcache-indexed.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Register cache access API - indexed caching support
- *
- * Copyright 2011 Wolfson Microelectronics plc
- *
- * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
- *
- * 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/slab.h>
-
-#include "internal.h"
-
-static int regcache_indexed_read(struct regmap *map, unsigned int reg,
-				 unsigned int *value)
-{
-	int ret;
-
-	ret = regcache_lookup_reg(map, reg);
-	if (ret >= 0)
-		*value = map->reg_defaults[ret].def;
-
-	return ret;
-}
-
-static int regcache_indexed_write(struct regmap *map, unsigned int reg,
-				  unsigned int value)
-{
-	int ret;
-
-	ret = regcache_lookup_reg(map, reg);
-	if (ret < 0)
-		return regcache_insert_reg(map, reg, value);
-	map->reg_defaults[ret].def = value;
-	return 0;
-}
-
-static int regcache_indexed_sync(struct regmap *map)
-{
-	unsigned int i;
-	int ret;
-
-	for (i = 0; i < map->num_reg_defaults; i++) {
-		ret = _regmap_write(map, map->reg_defaults[i].reg,
-				    map->reg_defaults[i].def);
-		if (ret < 0)
-			return ret;
-		dev_dbg(map->dev, "Synced register %#x, value %#x\n",
-			map->reg_defaults[i].reg,
-			map->reg_defaults[i].def);
-	}
-	return 0;
-}
-
-struct regcache_ops regcache_indexed_ops = {
-	.type = REGCACHE_INDEXED,
-	.name = "indexed",
-	.read = regcache_indexed_read,
-	.write = regcache_indexed_write,
-	.sync = regcache_indexed_sync
-};
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index 066aeece3626..b7d16143edeb 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -15,6 +15,8 @@
 
 #include "internal.h"
 
+static int regcache_lzo_exit(struct regmap *map);
+
 struct regcache_lzo_ctx {
 	void *wmem;
 	void *dst;
@@ -27,7 +29,7 @@ struct regcache_lzo_ctx {
 };
 
 #define LZO_BLOCK_NUM 8
-static int regcache_lzo_block_count(void)
+static int regcache_lzo_block_count(struct regmap *map)
 {
 	return LZO_BLOCK_NUM;
 }
@@ -106,19 +108,22 @@ static inline int regcache_lzo_get_blkindex(struct regmap *map,
 					    unsigned int reg)
 {
 	return (reg * map->cache_word_size) /
-		DIV_ROUND_UP(map->cache_size_raw, regcache_lzo_block_count());
+		DIV_ROUND_UP(map->cache_size_raw,
+			     regcache_lzo_block_count(map));
 }
 
 static inline int regcache_lzo_get_blkpos(struct regmap *map,
 					  unsigned int reg)
 {
-	return reg % (DIV_ROUND_UP(map->cache_size_raw, regcache_lzo_block_count()) /
+	return reg % (DIV_ROUND_UP(map->cache_size_raw,
+				   regcache_lzo_block_count(map)) /
 		      map->cache_word_size);
 }
 
 static inline int regcache_lzo_get_blksize(struct regmap *map)
 {
-	return DIV_ROUND_UP(map->cache_size_raw, regcache_lzo_block_count());
+	return DIV_ROUND_UP(map->cache_size_raw,
+			    regcache_lzo_block_count(map));
 }
 
 static int regcache_lzo_init(struct regmap *map)
@@ -131,7 +136,7 @@ static int regcache_lzo_init(struct regmap *map)
 
 	ret = 0;
 
-	blkcount = regcache_lzo_block_count();
+	blkcount = regcache_lzo_block_count(map);
 	map->cache = kzalloc(blkcount * sizeof *lzo_blocks,
 			     GFP_KERNEL);
 	if (!map->cache)
@@ -190,7 +195,7 @@ static int regcache_lzo_init(struct regmap *map)
 
 	return 0;
 err:
-	regcache_exit(map);
+	regcache_lzo_exit(map);
 	return ret;
 }
 
@@ -203,7 +208,7 @@ static int regcache_lzo_exit(struct regmap *map)
 	if (!lzo_blocks)
 		return 0;
 
-	blkcount = regcache_lzo_block_count();
+	blkcount = regcache_lzo_block_count(map);
 	/*
 	 * the pointer to the bitmap used for syncing the cache
 	 * is shared amongst all lzo_blocks.  Ensure it is freed
@@ -351,7 +356,7 @@ static int regcache_lzo_sync(struct regmap *map)
 }
 
 struct regcache_ops regcache_lzo_ops = {
-	.type = REGCACHE_LZO,
+	.type = REGCACHE_COMPRESSED,
 	.name = "lzo",
 	.init = regcache_lzo_init,
 	.exit = regcache_lzo_exit,
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index e31498499b0f..32620c4f1683 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -11,12 +11,15 @@
  */
 
 #include <linux/slab.h>
+#include <linux/debugfs.h>
 #include <linux/rbtree.h>
+#include <linux/seq_file.h>
 
 #include "internal.h"
 
 static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
 				 unsigned int value);
+static int regcache_rbtree_exit(struct regmap *map);
 
 struct regcache_rbtree_node {
 	/* the actual rbtree node holding this block */
@@ -124,6 +127,60 @@ static int regcache_rbtree_insert(struct rb_root *root,
 	return 1;
 }
 
+#ifdef CONFIG_DEBUG_FS
+static int rbtree_show(struct seq_file *s, void *ignored)
+{
+	struct regmap *map = s->private;
+	struct regcache_rbtree_ctx *rbtree_ctx = map->cache;
+	struct regcache_rbtree_node *n;
+	struct rb_node *node;
+	unsigned int base, top;
+	int nodes = 0;
+	int registers = 0;
+
+	mutex_lock(&map->lock);
+
+	for (node = rb_first(&rbtree_ctx->root); node != NULL;
+	     node = rb_next(node)) {
+		n = container_of(node, struct regcache_rbtree_node, node);
+
+		regcache_rbtree_get_base_top_reg(n, &base, &top);
+		seq_printf(s, "%x-%x (%d)\n", base, top, top - base + 1);
+
+		nodes++;
+		registers += top - base + 1;
+	}
+
+	seq_printf(s, "%d nodes, %d registers, average %d registers\n",
+		   nodes, registers, registers / nodes);
+
+	mutex_unlock(&map->lock);
+
+	return 0;
+}
+
+static int rbtree_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, rbtree_show, inode->i_private);
+}
+
+static const struct file_operations rbtree_fops = {
+	.open		= rbtree_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static void rbtree_debugfs_init(struct regmap *map)
+{
+	debugfs_create_file("rbtree", 0400, map->debugfs, map, &rbtree_fops);
+}
+#else
+static void rbtree_debugfs_init(struct regmap *map)
+{
+}
+#endif
+
 static int regcache_rbtree_init(struct regmap *map)
 {
 	struct regcache_rbtree_ctx *rbtree_ctx;
@@ -146,10 +203,12 @@ static int regcache_rbtree_init(struct regmap *map)
 			goto err;
 	}
 
+	rbtree_debugfs_init(map);
+
 	return 0;
 
 err:
-	regcache_exit(map);
+	regcache_rbtree_exit(map);
 	return ret;
 }
 
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 666f6f5011dc..1ead66186b7c 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -19,7 +19,6 @@
 #include "internal.h"
 
 static const struct regcache_ops *cache_types[] = {
-	&regcache_indexed_ops,
 	&regcache_rbtree_ops,
 	&regcache_lzo_ops,
 };
@@ -61,8 +60,10 @@ static int regcache_hw_init(struct regmap *map)
 
 	map->reg_defaults = kmalloc(count * sizeof(struct reg_default),
 				      GFP_KERNEL);
-	if (!map->reg_defaults)
-		return -ENOMEM;
+	if (!map->reg_defaults) {
+		ret = -ENOMEM;
+		goto err_free;
+	}
 
 	/* fill the reg_defaults */
 	map->num_reg_defaults = count;
@@ -77,9 +78,15 @@ static int regcache_hw_init(struct regmap *map)
 	}
 
 	return 0;
+
+err_free:
+	if (map->cache_free)
+		kfree(map->reg_defaults_raw);
+
+	return ret;
 }
 
-int regcache_init(struct regmap *map)
+int regcache_init(struct regmap *map, const struct regmap_config *config)
 {
 	int ret;
 	int i;
@@ -100,6 +107,12 @@ int regcache_init(struct regmap *map)
 		return -EINVAL;
 	}
 
+	map->num_reg_defaults = config->num_reg_defaults;
+	map->num_reg_defaults_raw = config->num_reg_defaults_raw;
+	map->reg_defaults_raw = config->reg_defaults_raw;
+	map->cache_word_size = DIV_ROUND_UP(config->val_bits, 8);
+	map->cache_size_raw = map->cache_word_size * config->num_reg_defaults_raw;
+
 	map->cache = NULL;
 	map->cache_ops = cache_types[i];
 
@@ -112,10 +125,10 @@ int regcache_init(struct regmap *map)
 	 * won't vanish from under us.  We'll need to make
 	 * a copy of it.
 	 */
-	if (map->reg_defaults) {
+	if (config->reg_defaults) {
 		if (!map->num_reg_defaults)
 			return -EINVAL;
-		tmp_buf = kmemdup(map->reg_defaults, map->num_reg_defaults *
+		tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults *
 				  sizeof(struct reg_default), GFP_KERNEL);
 		if (!tmp_buf)
 			return -ENOMEM;
@@ -136,9 +149,18 @@ int regcache_init(struct regmap *map)
 	if (map->cache_ops->init) {
 		dev_dbg(map->dev, "Initializing %s cache\n",
 			map->cache_ops->name);
-		return map->cache_ops->init(map);
+		ret = map->cache_ops->init(map);
+		if (ret)
+			goto err_free;
 	}
 	return 0;
+
+err_free:
+	kfree(map->reg_defaults);
+	if (map->cache_free)
+		kfree(map->reg_defaults_raw);
+
+	return ret;
 }
 
 void regcache_exit(struct regmap *map)
@@ -171,16 +193,21 @@ void regcache_exit(struct regmap *map)
 int regcache_read(struct regmap *map,
 		  unsigned int reg, unsigned int *value)
 {
+	int ret;
+
 	if (map->cache_type == REGCACHE_NONE)
 		return -ENOSYS;
 
 	BUG_ON(!map->cache_ops);
 
-	if (!regmap_readable(map, reg))
-		return -EIO;
+	if (!regmap_volatile(map, reg)) {
+		ret = map->cache_ops->read(map, reg, value);
 
-	if (!regmap_volatile(map, reg))
-		return map->cache_ops->read(map, reg, value);
+		if (ret == 0)
+			trace_regmap_reg_read_cache(map->dev, reg, *value);
+
+		return ret;
+	}
 
 	return -EINVAL;
 }
@@ -241,6 +268,8 @@ int regcache_sync(struct regmap *map)
 		map->cache_ops->name);
 	name = map->cache_ops->name;
 	trace_regcache_sync(map->dev, name, "start");
+	if (!map->cache_dirty)
+		goto out;
 	if (map->cache_ops->sync) {
 		ret = map->cache_ops->sync(map);
 	} else {
@@ -291,6 +320,23 @@ void regcache_cache_only(struct regmap *map, bool enable)
 EXPORT_SYMBOL_GPL(regcache_cache_only);
 
 /**
+ * regcache_mark_dirty: Mark the register cache as dirty
+ *
+ * @map: map to mark
+ *
+ * Mark the register cache as dirty, for example due to the device
+ * having been powered down for suspend.  If the cache is not marked
+ * as dirty then the cache sync will be suppressed.
+ */
+void regcache_mark_dirty(struct regmap *map)
+{
+	mutex_lock(&map->lock);
+	map->cache_dirty = true;
+	mutex_unlock(&map->lock);
+}
+EXPORT_SYMBOL_GPL(regcache_mark_dirty);
+
+/**
  * regcache_cache_bypass: Put a register map into cache bypass mode
  *
  * @map: map to configure
@@ -381,22 +427,3 @@ int regcache_lookup_reg(struct regmap *map, unsigned int reg)
 	else
 		return -ENOENT;
 }
-
-int regcache_insert_reg(struct regmap *map, unsigned int reg,
-			unsigned int val)
-{
-	void *tmp;
-
-	tmp = krealloc(map->reg_defaults,
-		       (map->num_reg_defaults + 1) * sizeof(struct reg_default),
-		       GFP_KERNEL);
-	if (!tmp)
-		return -ENOMEM;
-	map->reg_defaults = tmp;
-	map->num_reg_defaults++;
-	map->reg_defaults[map->num_reg_defaults - 1].reg = reg;
-	map->reg_defaults[map->num_reg_defaults - 1].def = val;
-	sort(map->reg_defaults, map->num_reg_defaults,
-	     sizeof(struct reg_default), regcache_default_cmp, NULL);
-	return 0;
-}
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
new file mode 100644
index 000000000000..428836fc5835
--- /dev/null
+++ b/drivers/base/regmap/regmap-irq.c
@@ -0,0 +1,302 @@
+/*
+ * regmap based irq_chip
+ *
+ * Copyright 2011 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * 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/export.h>
+#include <linux/regmap.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+
+#include "internal.h"
+
+struct regmap_irq_chip_data {
+	struct mutex lock;
+
+	struct regmap *map;
+	struct regmap_irq_chip *chip;
+
+	int irq_base;
+
+	void *status_reg_buf;
+	unsigned int *status_buf;
+	unsigned int *mask_buf;
+	unsigned int *mask_buf_def;
+};
+
+static inline const
+struct regmap_irq *irq_to_regmap_irq(struct regmap_irq_chip_data *data,
+				     int irq)
+{
+	return &data->chip->irqs[irq - data->irq_base];
+}
+
+static void regmap_irq_lock(struct irq_data *data)
+{
+	struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
+
+	mutex_lock(&d->lock);
+}
+
+static void regmap_irq_sync_unlock(struct irq_data *data)
+{
+	struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
+	int i, ret;
+
+	/*
+	 * If there's been a change in the mask write it back to the
+	 * hardware.  We rely on the use of the regmap core cache to
+	 * suppress pointless writes.
+	 */
+	for (i = 0; i < d->chip->num_regs; i++) {
+		ret = regmap_update_bits(d->map, d->chip->mask_base + i,
+					 d->mask_buf_def[i], d->mask_buf[i]);
+		if (ret != 0)
+			dev_err(d->map->dev, "Failed to sync masks in %x\n",
+				d->chip->mask_base + i);
+	}
+
+	mutex_unlock(&d->lock);
+}
+
+static void regmap_irq_enable(struct irq_data *data)
+{
+	struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
+	const struct regmap_irq *irq_data = irq_to_regmap_irq(d, data->irq);
+
+	d->mask_buf[irq_data->reg_offset] &= ~irq_data->mask;
+}
+
+static void regmap_irq_disable(struct irq_data *data)
+{
+	struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
+	const struct regmap_irq *irq_data = irq_to_regmap_irq(d, data->irq);
+
+	d->mask_buf[irq_data->reg_offset] |= irq_data->mask;
+}
+
+static struct irq_chip regmap_irq_chip = {
+	.name			= "regmap",
+	.irq_bus_lock		= regmap_irq_lock,
+	.irq_bus_sync_unlock	= regmap_irq_sync_unlock,
+	.irq_disable		= regmap_irq_disable,
+	.irq_enable		= regmap_irq_enable,
+};
+
+static irqreturn_t regmap_irq_thread(int irq, void *d)
+{
+	struct regmap_irq_chip_data *data = d;
+	struct regmap_irq_chip *chip = data->chip;
+	struct regmap *map = data->map;
+	int ret, i;
+	u8 *buf8 = data->status_reg_buf;
+	u16 *buf16 = data->status_reg_buf;
+	u32 *buf32 = data->status_reg_buf;
+	bool handled = false;
+
+	ret = regmap_bulk_read(map, chip->status_base, data->status_reg_buf,
+			       chip->num_regs);
+	if (ret != 0) {
+		dev_err(map->dev, "Failed to read IRQ status: %d\n", ret);
+		return IRQ_NONE;
+	}
+
+	/*
+	 * Ignore masked IRQs and ack if we need to; we ack early so
+	 * there is no race between handling and acknowleding the
+	 * interrupt.  We assume that typically few of the interrupts
+	 * will fire simultaneously so don't worry about overhead from
+	 * doing a write per register.
+	 */
+	for (i = 0; i < data->chip->num_regs; i++) {
+		switch (map->format.val_bytes) {
+		case 1:
+			data->status_buf[i] = buf8[i];
+			break;
+		case 2:
+			data->status_buf[i] = buf16[i];
+			break;
+		case 4:
+			data->status_buf[i] = buf32[i];
+			break;
+		default:
+			BUG();
+			return IRQ_NONE;
+		}
+
+		data->status_buf[i] &= ~data->mask_buf[i];
+
+		if (data->status_buf[i] && chip->ack_base) {
+			ret = regmap_write(map, chip->ack_base + i,
+					   data->status_buf[i]);
+			if (ret != 0)
+				dev_err(map->dev, "Failed to ack 0x%x: %d\n",
+					chip->ack_base + i, ret);
+		}
+	}
+
+	for (i = 0; i < chip->num_irqs; i++) {
+		if (data->status_buf[chip->irqs[i].reg_offset] &
+		    chip->irqs[i].mask) {
+			handle_nested_irq(data->irq_base + i);
+			handled = true;
+		}
+	}
+
+	if (handled)
+		return IRQ_HANDLED;
+	else
+		return IRQ_NONE;
+}
+
+/**
+ * regmap_add_irq_chip(): Use standard regmap IRQ controller handling
+ *
+ * map:       The regmap for the device.
+ * irq:       The IRQ the device uses to signal interrupts
+ * irq_flags: The IRQF_ flags to use for the primary interrupt.
+ * chip:      Configuration for the interrupt controller.
+ * data:      Runtime data structure for the controller, allocated on success
+ *
+ * Returns 0 on success or an errno on failure.
+ *
+ * In order for this to be efficient the chip really should use a
+ * register cache.  The chip driver is responsible for restoring the
+ * register values used by the IRQ controller over suspend and resume.
+ */
+int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
+			int irq_base, struct regmap_irq_chip *chip,
+			struct regmap_irq_chip_data **data)
+{
+	struct regmap_irq_chip_data *d;
+	int cur_irq, i;
+	int ret = -ENOMEM;
+
+	irq_base = irq_alloc_descs(irq_base, 0, chip->num_irqs, 0);
+	if (irq_base < 0) {
+		dev_warn(map->dev, "Failed to allocate IRQs: %d\n",
+			 irq_base);
+		return irq_base;
+	}
+
+	d = kzalloc(sizeof(*d), GFP_KERNEL);
+	if (!d)
+		return -ENOMEM;
+
+	d->status_buf = kzalloc(sizeof(unsigned int) * chip->num_regs,
+				GFP_KERNEL);
+	if (!d->status_buf)
+		goto err_alloc;
+
+	d->status_reg_buf = kzalloc(map->format.val_bytes * chip->num_regs,
+				    GFP_KERNEL);
+	if (!d->status_reg_buf)
+		goto err_alloc;
+
+	d->mask_buf = kzalloc(sizeof(unsigned int) * chip->num_regs,
+			      GFP_KERNEL);
+	if (!d->mask_buf)
+		goto err_alloc;
+
+	d->mask_buf_def = kzalloc(sizeof(unsigned int) * chip->num_regs,
+				  GFP_KERNEL);
+	if (!d->mask_buf_def)
+		goto err_alloc;
+
+	d->map = map;
+	d->chip = chip;
+	d->irq_base = irq_base;
+	mutex_init(&d->lock);
+
+	for (i = 0; i < chip->num_irqs; i++)
+		d->mask_buf_def[chip->irqs[i].reg_offset]
+			|= chip->irqs[i].mask;
+
+	/* Mask all the interrupts by default */
+	for (i = 0; i < chip->num_regs; i++) {
+		d->mask_buf[i] = d->mask_buf_def[i];
+		ret = regmap_write(map, chip->mask_base + i, d->mask_buf[i]);
+		if (ret != 0) {
+			dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
+				chip->mask_base + i, ret);
+			goto err_alloc;
+		}
+	}
+
+	/* Register them with genirq */
+	for (cur_irq = irq_base;
+	     cur_irq < chip->num_irqs + irq_base;
+	     cur_irq++) {
+		irq_set_chip_data(cur_irq, d);
+		irq_set_chip_and_handler(cur_irq, &regmap_irq_chip,
+					 handle_edge_irq);
+		irq_set_nested_thread(cur_irq, 1);
+
+		/* ARM needs us to explicitly flag the IRQ as valid
+		 * and will set them noprobe when we do so. */
+#ifdef CONFIG_ARM
+		set_irq_flags(cur_irq, IRQF_VALID);
+#else
+		irq_set_noprobe(cur_irq);
+#endif
+	}
+
+	ret = request_threaded_irq(irq, NULL, regmap_irq_thread, irq_flags,
+				   chip->name, d);
+	if (ret != 0) {
+		dev_err(map->dev, "Failed to request IRQ %d: %d\n", irq, ret);
+		goto err_alloc;
+	}
+
+	return 0;
+
+err_alloc:
+	kfree(d->mask_buf_def);
+	kfree(d->mask_buf);
+	kfree(d->status_reg_buf);
+	kfree(d->status_buf);
+	kfree(d);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(regmap_add_irq_chip);
+
+/**
+ * regmap_del_irq_chip(): Stop interrupt handling for a regmap IRQ chip
+ *
+ * @irq: Primary IRQ for the device
+ * @d:   regmap_irq_chip_data allocated by regmap_add_irq_chip()
+ */
+void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *d)
+{
+	if (!d)
+		return;
+
+	free_irq(irq, d);
+	kfree(d->mask_buf_def);
+	kfree(d->mask_buf);
+	kfree(d->status_reg_buf);
+	kfree(d->status_buf);
+	kfree(d);
+}
+EXPORT_SYMBOL_GPL(regmap_del_irq_chip);
+
+/**
+ * regmap_irq_chip_get_base(): Retrieve interrupt base for a regmap IRQ chip
+ *
+ * Useful for drivers to request their own IRQs.
+ *
+ * @data: regmap_irq controller to operate on.
+ */
+int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data)
+{
+	return data->irq_base;
+}
+EXPORT_SYMBOL_GPL(regmap_irq_chip_get_base);
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index bf441db1ee90..be10a4ff6609 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -64,6 +64,18 @@ bool regmap_precious(struct regmap *map, unsigned int reg)
 	return false;
 }
 
+static bool regmap_volatile_range(struct regmap *map, unsigned int reg,
+	unsigned int num)
+{
+	unsigned int i;
+
+	for (i = 0; i < num; i++)
+		if (!regmap_volatile(map, reg + i))
+			return false;
+
+	return true;
+}
+
 static void regmap_format_4_12_write(struct regmap *map,
 				     unsigned int reg, unsigned int val)
 {
@@ -78,6 +90,16 @@ static void regmap_format_7_9_write(struct regmap *map,
 	*out = cpu_to_be16((reg << 9) | val);
 }
 
+static void regmap_format_10_14_write(struct regmap *map,
+				    unsigned int reg, unsigned int val)
+{
+	u8 *out = map->work_buf;
+
+	out[2] = val;
+	out[1] = (val >> 8) | (reg << 6);
+	out[0] = reg >> 2;
+}
+
 static void regmap_format_8(void *buf, unsigned int val)
 {
 	u8 *b = buf;
@@ -127,7 +149,7 @@ struct regmap *regmap_init(struct device *dev,
 	int ret = -EINVAL;
 
 	if (!bus || !config)
-		return NULL;
+		goto err;
 
 	map = kzalloc(sizeof(*map), GFP_KERNEL);
 	if (map == NULL) {
@@ -147,12 +169,6 @@ struct regmap *regmap_init(struct device *dev,
 	map->volatile_reg = config->volatile_reg;
 	map->precious_reg = config->precious_reg;
 	map->cache_type = config->cache_type;
-	map->reg_defaults = config->reg_defaults;
-	map->num_reg_defaults = config->num_reg_defaults;
-	map->num_reg_defaults_raw = config->num_reg_defaults_raw;
-	map->reg_defaults_raw = config->reg_defaults_raw;
-	map->cache_size_raw = (config->val_bits / 8) * config->num_reg_defaults_raw;
-	map->cache_word_size = config->val_bits / 8;
 
 	if (config->read_flag_mask || config->write_flag_mask) {
 		map->read_flag_mask = config->read_flag_mask;
@@ -182,6 +198,16 @@ struct regmap *regmap_init(struct device *dev,
 		}
 		break;
 
+	case 10:
+		switch (config->val_bits) {
+		case 14:
+			map->format.format_write = regmap_format_10_14_write;
+			break;
+		default:
+			goto err_map;
+		}
+		break;
+
 	case 8:
 		map->format.format_reg = regmap_format_8;
 		break;
@@ -215,14 +241,16 @@ struct regmap *regmap_init(struct device *dev,
 		goto err_map;
 	}
 
-	ret = regcache_init(map);
-	if (ret < 0)
-		goto err_map;
-
 	regmap_debugfs_init(map);
 
+	ret = regcache_init(map, config);
+	if (ret < 0)
+		goto err_free_workbuf;
+
 	return map;
 
+err_free_workbuf:
+	kfree(map->work_buf);
 err_map:
 	kfree(map);
 err:
@@ -231,6 +259,39 @@ err:
 EXPORT_SYMBOL_GPL(regmap_init);
 
 /**
+ * regmap_reinit_cache(): Reinitialise the current register cache
+ *
+ * @map: Register map to operate on.
+ * @config: New configuration.  Only the cache data will be used.
+ *
+ * Discard any existing register cache for the map and initialize a
+ * new cache.  This can be used to restore the cache to defaults or to
+ * update the cache configuration to reflect runtime discovery of the
+ * hardware.
+ */
+int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
+{
+	int ret;
+
+	mutex_lock(&map->lock);
+
+	regcache_exit(map);
+
+	map->max_register = config->max_register;
+	map->writeable_reg = config->writeable_reg;
+	map->readable_reg = config->readable_reg;
+	map->volatile_reg = config->volatile_reg;
+	map->precious_reg = config->precious_reg;
+	map->cache_type = config->cache_type;
+
+	ret = regcache_init(map, config);
+
+	mutex_unlock(&map->lock);
+
+	return ret;
+}
+
+/**
  * regmap_exit(): Free a previously allocated register map
  */
 void regmap_exit(struct regmap *map)
@@ -306,8 +367,10 @@ int _regmap_write(struct regmap *map, unsigned int reg,
 		ret = regcache_write(map, reg, val);
 		if (ret != 0)
 			return ret;
-		if (map->cache_only)
+		if (map->cache_only) {
+			map->cache_dirty = true;
 			return 0;
+		}
 	}
 
 	trace_regmap_reg_write(map->dev, reg, val);
@@ -375,9 +438,11 @@ EXPORT_SYMBOL_GPL(regmap_write);
 int regmap_raw_write(struct regmap *map, unsigned int reg,
 		     const void *val, size_t val_len)
 {
+	size_t val_count = val_len / map->format.val_bytes;
 	int ret;
 
-	WARN_ON(map->cache_type != REGCACHE_NONE);
+	WARN_ON(!regmap_volatile_range(map, reg, val_count) &&
+		map->cache_type != REGCACHE_NONE);
 
 	mutex_lock(&map->lock);
 
@@ -422,15 +487,15 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
 {
 	int ret;
 
-	if (!map->format.parse_val)
-		return -EINVAL;
-
 	if (!map->cache_bypass) {
 		ret = regcache_read(map, reg, val);
 		if (ret == 0)
 			return 0;
 	}
 
+	if (!map->format.parse_val)
+		return -EINVAL;
+
 	if (map->cache_only)
 		return -EBUSY;
 
@@ -481,15 +546,11 @@ EXPORT_SYMBOL_GPL(regmap_read);
 int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
 		    size_t val_len)
 {
+	size_t val_count = val_len / map->format.val_bytes;
 	int ret;
-	int i;
-	bool vol = true;
 
-	for (i = 0; i < val_len / map->format.val_bytes; i++)
-		if (!regmap_volatile(map, reg + i))
-			vol = false;
-
-	WARN_ON(!vol && map->cache_type != REGCACHE_NONE);
+	WARN_ON(!regmap_volatile_range(map, reg, val_count) &&
+		map->cache_type != REGCACHE_NONE);
 
 	mutex_lock(&map->lock);
 
@@ -517,16 +578,11 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 {
 	int ret, i;
 	size_t val_bytes = map->format.val_bytes;
-	bool vol = true;
+	bool vol = regmap_volatile_range(map, reg, val_count);
 
 	if (!map->format.parse_val)
 		return -EINVAL;
 
-	/* Is this a block of volatile registers? */
-	for (i = 0; i < val_count; i++)
-		if (!regmap_volatile(map, reg + i))
-			vol = false;
-
 	if (vol || map->cache_type == REGCACHE_NONE) {
 		ret = regmap_raw_read(map, reg, val, val_bytes * val_count);
 		if (ret != 0)
@@ -546,40 +602,73 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 }
 EXPORT_SYMBOL_GPL(regmap_bulk_read);
 
-/**
- * remap_update_bits: Perform a read/modify/write cycle on the register map
- *
- * @map: Register map to update
- * @reg: Register to update
- * @mask: Bitmask to change
- * @val: New value for bitmask
- *
- * Returns zero for success, a negative number on error.
- */
-int regmap_update_bits(struct regmap *map, unsigned int reg,
-		       unsigned int mask, unsigned int val)
+static int _regmap_update_bits(struct regmap *map, unsigned int reg,
+			       unsigned int mask, unsigned int val,
+			       bool *change)
 {
 	int ret;
-	unsigned int tmp;
+	unsigned int tmp, orig;
 
 	mutex_lock(&map->lock);
 
-	ret = _regmap_read(map, reg, &tmp);
+	ret = _regmap_read(map, reg, &orig);
 	if (ret != 0)
 		goto out;
 
-	tmp &= ~mask;
+	tmp = orig & ~mask;
 	tmp |= val & mask;
 
-	ret = _regmap_write(map, reg, tmp);
+	if (tmp != orig) {
+		ret = _regmap_write(map, reg, tmp);
+		*change = true;
+	} else {
+		*change = false;
+	}
 
 out:
 	mutex_unlock(&map->lock);
 
 	return ret;
 }
+
+/**
+ * regmap_update_bits: Perform a read/modify/write cycle on the register map
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @mask: Bitmask to change
+ * @val: New value for bitmask
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_update_bits(struct regmap *map, unsigned int reg,
+		       unsigned int mask, unsigned int val)
+{
+	bool change;
+	return _regmap_update_bits(map, reg, mask, val, &change);
+}
 EXPORT_SYMBOL_GPL(regmap_update_bits);
 
+/**
+ * regmap_update_bits_check: Perform a read/modify/write cycle on the
+ *                           register map and report if updated
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @mask: Bitmask to change
+ * @val: New value for bitmask
+ * @change: Boolean indicating if a write was done
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_update_bits_check(struct regmap *map, unsigned int reg,
+			     unsigned int mask, unsigned int val,
+			     bool *change)
+{
+	return _regmap_update_bits(map, reg, mask, val, change);
+}
+EXPORT_SYMBOL_GPL(regmap_update_bits_check);
+
 static int __init regmap_initcall(void)
 {
 	regmap_debugfs_initcall();
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index d476880c6fff..5099681cf503 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -70,7 +70,7 @@ config GPIO_GENERIC
 
 config GPIO_DA9052
 	tristate "Dialog DA9052 GPIO"
-	depends on PMIC_DA9052
+	depends on PMIC_DA9052 && BROKEN
 	help
 	  Say yes here to enable the GPIO driver for the DA9052 chip.
 
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index f1391c21ef26..c8322eefc865 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -328,6 +328,34 @@ config PMIC_DA903X
 	  individual components like LCD backlight, voltage regulators,
 	  LEDs and battery-charger under the corresponding menus.
 
+config PMIC_DA9052
+	bool
+	select MFD_CORE
+
+config MFD_DA9052_SPI
+	bool "Support Dialog Semiconductor DA9052/53 PMIC variants with SPI"
+	select REGMAP_SPI
+	select REGMAP_IRQ
+	select PMIC_DA9052
+	depends on SPI_MASTER=y
+	help
+	  Support for the Dialog Semiconductor DA9052 PMIC
+	  when controlled using SPI. This driver provides common support
+	  for accessing the device, additional drivers must be enabled in
+	  order to use the functionality of the device.
+
+config MFD_DA9052_I2C
+	bool "Support Dialog Semiconductor DA9052/53 PMIC variants with I2C"
+	select REGMAP_I2C
+	select REGMAP_IRQ
+	select PMIC_DA9052
+	depends on I2C=y
+	help
+	  Support for the Dialog Semiconductor DA9052 PMIC
+	  when controlled using I2C. This driver provides common support
+	  for accessing the device, additional drivers must be enabled in
+	  order to use the functionality of the device.
+
 config PMIC_ADP5520
 	bool "Analog Devices ADP5520/01 MFD PMIC Core Support"
 	depends on I2C=y
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index b2292eb75242..d5f574306c7f 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -67,6 +67,11 @@ endif
 obj-$(CONFIG_UCB1400_CORE)	+= ucb1400_core.o
 
 obj-$(CONFIG_PMIC_DA903X)	+= da903x.o
+
+obj-$(CONFIG_PMIC_DA9052)	+= da9052-core.o
+obj-$(CONFIG_MFD_DA9052_SPI)	+= da9052-spi.o
+obj-$(CONFIG_MFD_DA9052_I2C)	+= da9052-i2c.o
+
 max8925-objs			:= max8925-core.o max8925-i2c.o
 obj-$(CONFIG_MFD_MAX8925)	+= max8925.o
 obj-$(CONFIG_MFD_MAX8997)	+= max8997.o max8997-irq.o
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
new file mode 100644
index 000000000000..5ddde2a9176a
--- /dev/null
+++ b/drivers/mfd/da9052-core.c
@@ -0,0 +1,694 @@
+/*
+ * Device access for Dialog DA9052 PMICs.
+ *
+ * Copyright(c) 2011 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ *
+ *  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/device.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/mutex.h>
+#include <linux/mfd/core.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/pdata.h>
+#include <linux/mfd/da9052/reg.h>
+
+#define DA9052_NUM_IRQ_REGS		4
+#define DA9052_IRQ_MASK_POS_1		0x01
+#define DA9052_IRQ_MASK_POS_2		0x02
+#define DA9052_IRQ_MASK_POS_3		0x04
+#define DA9052_IRQ_MASK_POS_4		0x08
+#define DA9052_IRQ_MASK_POS_5		0x10
+#define DA9052_IRQ_MASK_POS_6		0x20
+#define DA9052_IRQ_MASK_POS_7		0x40
+#define DA9052_IRQ_MASK_POS_8		0x80
+
+static bool da9052_reg_readable(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA9052_PAGE0_CON_REG:
+	case DA9052_STATUS_A_REG:
+	case DA9052_STATUS_B_REG:
+	case DA9052_STATUS_C_REG:
+	case DA9052_STATUS_D_REG:
+	case DA9052_EVENT_A_REG:
+	case DA9052_EVENT_B_REG:
+	case DA9052_EVENT_C_REG:
+	case DA9052_EVENT_D_REG:
+	case DA9052_FAULTLOG_REG:
+	case DA9052_IRQ_MASK_A_REG:
+	case DA9052_IRQ_MASK_B_REG:
+	case DA9052_IRQ_MASK_C_REG:
+	case DA9052_IRQ_MASK_D_REG:
+	case DA9052_CONTROL_A_REG:
+	case DA9052_CONTROL_B_REG:
+	case DA9052_CONTROL_C_REG:
+	case DA9052_CONTROL_D_REG:
+	case DA9052_PDDIS_REG:
+	case DA9052_INTERFACE_REG:
+	case DA9052_RESET_REG:
+	case DA9052_GPIO_0_1_REG:
+	case DA9052_GPIO_2_3_REG:
+	case DA9052_GPIO_4_5_REG:
+	case DA9052_GPIO_6_7_REG:
+	case DA9052_GPIO_14_15_REG:
+	case DA9052_ID_0_1_REG:
+	case DA9052_ID_2_3_REG:
+	case DA9052_ID_4_5_REG:
+	case DA9052_ID_6_7_REG:
+	case DA9052_ID_8_9_REG:
+	case DA9052_ID_10_11_REG:
+	case DA9052_ID_12_13_REG:
+	case DA9052_ID_14_15_REG:
+	case DA9052_ID_16_17_REG:
+	case DA9052_ID_18_19_REG:
+	case DA9052_ID_20_21_REG:
+	case DA9052_SEQ_STATUS_REG:
+	case DA9052_SEQ_A_REG:
+	case DA9052_SEQ_B_REG:
+	case DA9052_SEQ_TIMER_REG:
+	case DA9052_BUCKA_REG:
+	case DA9052_BUCKB_REG:
+	case DA9052_BUCKCORE_REG:
+	case DA9052_BUCKPRO_REG:
+	case DA9052_BUCKMEM_REG:
+	case DA9052_BUCKPERI_REG:
+	case DA9052_LDO1_REG:
+	case DA9052_LDO2_REG:
+	case DA9052_LDO3_REG:
+	case DA9052_LDO4_REG:
+	case DA9052_LDO5_REG:
+	case DA9052_LDO6_REG:
+	case DA9052_LDO7_REG:
+	case DA9052_LDO8_REG:
+	case DA9052_LDO9_REG:
+	case DA9052_LDO10_REG:
+	case DA9052_SUPPLY_REG:
+	case DA9052_PULLDOWN_REG:
+	case DA9052_CHGBUCK_REG:
+	case DA9052_WAITCONT_REG:
+	case DA9052_ISET_REG:
+	case DA9052_BATCHG_REG:
+	case DA9052_CHG_CONT_REG:
+	case DA9052_INPUT_CONT_REG:
+	case DA9052_CHG_TIME_REG:
+	case DA9052_BBAT_CONT_REG:
+	case DA9052_BOOST_REG:
+	case DA9052_LED_CONT_REG:
+	case DA9052_LEDMIN123_REG:
+	case DA9052_LED1_CONF_REG:
+	case DA9052_LED2_CONF_REG:
+	case DA9052_LED3_CONF_REG:
+	case DA9052_LED1CONT_REG:
+	case DA9052_LED2CONT_REG:
+	case DA9052_LED3CONT_REG:
+	case DA9052_LED_CONT_4_REG:
+	case DA9052_LED_CONT_5_REG:
+	case DA9052_ADC_MAN_REG:
+	case DA9052_ADC_CONT_REG:
+	case DA9052_ADC_RES_L_REG:
+	case DA9052_ADC_RES_H_REG:
+	case DA9052_VDD_RES_REG:
+	case DA9052_VDD_MON_REG:
+	case DA9052_ICHG_AV_REG:
+	case DA9052_ICHG_THD_REG:
+	case DA9052_ICHG_END_REG:
+	case DA9052_TBAT_RES_REG:
+	case DA9052_TBAT_HIGHP_REG:
+	case DA9052_TBAT_HIGHN_REG:
+	case DA9052_TBAT_LOW_REG:
+	case DA9052_T_OFFSET_REG:
+	case DA9052_ADCIN4_RES_REG:
+	case DA9052_AUTO4_HIGH_REG:
+	case DA9052_AUTO4_LOW_REG:
+	case DA9052_ADCIN5_RES_REG:
+	case DA9052_AUTO5_HIGH_REG:
+	case DA9052_AUTO5_LOW_REG:
+	case DA9052_ADCIN6_RES_REG:
+	case DA9052_AUTO6_HIGH_REG:
+	case DA9052_AUTO6_LOW_REG:
+	case DA9052_TJUNC_RES_REG:
+	case DA9052_TSI_CONT_A_REG:
+	case DA9052_TSI_CONT_B_REG:
+	case DA9052_TSI_X_MSB_REG:
+	case DA9052_TSI_Y_MSB_REG:
+	case DA9052_TSI_LSB_REG:
+	case DA9052_TSI_Z_MSB_REG:
+	case DA9052_COUNT_S_REG:
+	case DA9052_COUNT_MI_REG:
+	case DA9052_COUNT_H_REG:
+	case DA9052_COUNT_D_REG:
+	case DA9052_COUNT_MO_REG:
+	case DA9052_COUNT_Y_REG:
+	case DA9052_ALARM_MI_REG:
+	case DA9052_ALARM_H_REG:
+	case DA9052_ALARM_D_REG:
+	case DA9052_ALARM_MO_REG:
+	case DA9052_ALARM_Y_REG:
+	case DA9052_SECOND_A_REG:
+	case DA9052_SECOND_B_REG:
+	case DA9052_SECOND_C_REG:
+	case DA9052_SECOND_D_REG:
+	case DA9052_PAGE1_CON_REG:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool da9052_reg_writeable(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA9052_PAGE0_CON_REG:
+	case DA9052_EVENT_A_REG:
+	case DA9052_EVENT_B_REG:
+	case DA9052_EVENT_C_REG:
+	case DA9052_EVENT_D_REG:
+	case DA9052_IRQ_MASK_A_REG:
+	case DA9052_IRQ_MASK_B_REG:
+	case DA9052_IRQ_MASK_C_REG:
+	case DA9052_IRQ_MASK_D_REG:
+	case DA9052_CONTROL_A_REG:
+	case DA9052_CONTROL_B_REG:
+	case DA9052_CONTROL_C_REG:
+	case DA9052_CONTROL_D_REG:
+	case DA9052_PDDIS_REG:
+	case DA9052_RESET_REG:
+	case DA9052_GPIO_0_1_REG:
+	case DA9052_GPIO_2_3_REG:
+	case DA9052_GPIO_4_5_REG:
+	case DA9052_GPIO_6_7_REG:
+	case DA9052_GPIO_14_15_REG:
+	case DA9052_ID_0_1_REG:
+	case DA9052_ID_2_3_REG:
+	case DA9052_ID_4_5_REG:
+	case DA9052_ID_6_7_REG:
+	case DA9052_ID_8_9_REG:
+	case DA9052_ID_10_11_REG:
+	case DA9052_ID_12_13_REG:
+	case DA9052_ID_14_15_REG:
+	case DA9052_ID_16_17_REG:
+	case DA9052_ID_18_19_REG:
+	case DA9052_ID_20_21_REG:
+	case DA9052_SEQ_STATUS_REG:
+	case DA9052_SEQ_A_REG:
+	case DA9052_SEQ_B_REG:
+	case DA9052_SEQ_TIMER_REG:
+	case DA9052_BUCKA_REG:
+	case DA9052_BUCKB_REG:
+	case DA9052_BUCKCORE_REG:
+	case DA9052_BUCKPRO_REG:
+	case DA9052_BUCKMEM_REG:
+	case DA9052_BUCKPERI_REG:
+	case DA9052_LDO1_REG:
+	case DA9052_LDO2_REG:
+	case DA9052_LDO3_REG:
+	case DA9052_LDO4_REG:
+	case DA9052_LDO5_REG:
+	case DA9052_LDO6_REG:
+	case DA9052_LDO7_REG:
+	case DA9052_LDO8_REG:
+	case DA9052_LDO9_REG:
+	case DA9052_LDO10_REG:
+	case DA9052_SUPPLY_REG:
+	case DA9052_PULLDOWN_REG:
+	case DA9052_CHGBUCK_REG:
+	case DA9052_WAITCONT_REG:
+	case DA9052_ISET_REG:
+	case DA9052_BATCHG_REG:
+	case DA9052_CHG_CONT_REG:
+	case DA9052_INPUT_CONT_REG:
+	case DA9052_BBAT_CONT_REG:
+	case DA9052_BOOST_REG:
+	case DA9052_LED_CONT_REG:
+	case DA9052_LEDMIN123_REG:
+	case DA9052_LED1_CONF_REG:
+	case DA9052_LED2_CONF_REG:
+	case DA9052_LED3_CONF_REG:
+	case DA9052_LED1CONT_REG:
+	case DA9052_LED2CONT_REG:
+	case DA9052_LED3CONT_REG:
+	case DA9052_LED_CONT_4_REG:
+	case DA9052_LED_CONT_5_REG:
+	case DA9052_ADC_MAN_REG:
+	case DA9052_ADC_CONT_REG:
+	case DA9052_ADC_RES_L_REG:
+	case DA9052_ADC_RES_H_REG:
+	case DA9052_VDD_RES_REG:
+	case DA9052_VDD_MON_REG:
+	case DA9052_ICHG_THD_REG:
+	case DA9052_ICHG_END_REG:
+	case DA9052_TBAT_HIGHP_REG:
+	case DA9052_TBAT_HIGHN_REG:
+	case DA9052_TBAT_LOW_REG:
+	case DA9052_T_OFFSET_REG:
+	case DA9052_AUTO4_HIGH_REG:
+	case DA9052_AUTO4_LOW_REG:
+	case DA9052_AUTO5_HIGH_REG:
+	case DA9052_AUTO5_LOW_REG:
+	case DA9052_AUTO6_HIGH_REG:
+	case DA9052_AUTO6_LOW_REG:
+	case DA9052_TSI_CONT_A_REG:
+	case DA9052_TSI_CONT_B_REG:
+	case DA9052_COUNT_S_REG:
+	case DA9052_COUNT_MI_REG:
+	case DA9052_COUNT_H_REG:
+	case DA9052_COUNT_D_REG:
+	case DA9052_COUNT_MO_REG:
+	case DA9052_COUNT_Y_REG:
+	case DA9052_ALARM_MI_REG:
+	case DA9052_ALARM_H_REG:
+	case DA9052_ALARM_D_REG:
+	case DA9052_ALARM_MO_REG:
+	case DA9052_ALARM_Y_REG:
+	case DA9052_PAGE1_CON_REG:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool da9052_reg_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA9052_STATUS_A_REG:
+	case DA9052_STATUS_B_REG:
+	case DA9052_STATUS_C_REG:
+	case DA9052_STATUS_D_REG:
+	case DA9052_EVENT_A_REG:
+	case DA9052_EVENT_B_REG:
+	case DA9052_EVENT_C_REG:
+	case DA9052_EVENT_D_REG:
+	case DA9052_FAULTLOG_REG:
+	case DA9052_CHG_TIME_REG:
+	case DA9052_ADC_RES_L_REG:
+	case DA9052_ADC_RES_H_REG:
+	case DA9052_VDD_RES_REG:
+	case DA9052_ICHG_AV_REG:
+	case DA9052_TBAT_RES_REG:
+	case DA9052_ADCIN4_RES_REG:
+	case DA9052_ADCIN5_RES_REG:
+	case DA9052_ADCIN6_RES_REG:
+	case DA9052_TJUNC_RES_REG:
+	case DA9052_TSI_X_MSB_REG:
+	case DA9052_TSI_Y_MSB_REG:
+	case DA9052_TSI_LSB_REG:
+	case DA9052_TSI_Z_MSB_REG:
+	case DA9052_COUNT_S_REG:
+	case DA9052_COUNT_MI_REG:
+	case DA9052_COUNT_H_REG:
+	case DA9052_COUNT_D_REG:
+	case DA9052_COUNT_MO_REG:
+	case DA9052_COUNT_Y_REG:
+	case DA9052_ALARM_MI_REG:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static struct resource da9052_rtc_resource = {
+	.name = "ALM",
+	.start = DA9052_IRQ_ALARM,
+	.end   = DA9052_IRQ_ALARM,
+	.flags = IORESOURCE_IRQ,
+};
+
+static struct resource da9052_onkey_resource = {
+	.name = "ONKEY",
+	.start = DA9052_IRQ_NONKEY,
+	.end   = DA9052_IRQ_NONKEY,
+	.flags = IORESOURCE_IRQ,
+};
+
+static struct resource da9052_bat_resources[] = {
+	{
+		.name = "BATT TEMP",
+		.start = DA9052_IRQ_TBAT,
+		.end   = DA9052_IRQ_TBAT,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "DCIN DET",
+		.start = DA9052_IRQ_DCIN,
+		.end   = DA9052_IRQ_DCIN,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "DCIN REM",
+		.start = DA9052_IRQ_DCINREM,
+		.end   = DA9052_IRQ_DCINREM,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "VBUS DET",
+		.start = DA9052_IRQ_VBUS,
+		.end   = DA9052_IRQ_VBUS,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "VBUS REM",
+		.start = DA9052_IRQ_VBUSREM,
+		.end   = DA9052_IRQ_VBUSREM,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "CHG END",
+		.start = DA9052_IRQ_CHGEND,
+		.end   = DA9052_IRQ_CHGEND,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct resource da9052_tsi_resources[] = {
+	{
+		.name = "PENDWN",
+		.start = DA9052_IRQ_PENDOWN,
+		.end   = DA9052_IRQ_PENDOWN,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "TSIRDY",
+		.start = DA9052_IRQ_TSIREADY,
+		.end   = DA9052_IRQ_TSIREADY,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct mfd_cell __devinitdata da9052_subdev_info[] = {
+	{
+		.name = "da9052-regulator",
+		.id = 1,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 2,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 3,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 4,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 5,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 6,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 7,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 8,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 9,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 10,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 11,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 12,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 13,
+	},
+	{
+		.name = "da9052-regulator",
+		.id = 14,
+	},
+	{
+		.name = "da9052-onkey",
+		.resources = &da9052_onkey_resource,
+		.num_resources = 1,
+	},
+	{
+		.name = "da9052-rtc",
+		.resources = &da9052_rtc_resource,
+		.num_resources = 1,
+	},
+	{
+		.name = "da9052-gpio",
+	},
+	{
+		.name = "da9052-hwmon",
+	},
+	{
+		.name = "da9052-leds",
+	},
+	{
+		.name = "da9052-wled1",
+	},
+	{
+		.name = "da9052-wled2",
+	},
+	{
+		.name = "da9052-wled3",
+	},
+	{
+		.name = "da9052-tsi",
+		.resources = da9052_tsi_resources,
+		.num_resources = ARRAY_SIZE(da9052_tsi_resources),
+	},
+	{
+		.name = "da9052-bat",
+		.resources = da9052_bat_resources,
+		.num_resources = ARRAY_SIZE(da9052_bat_resources),
+	},
+	{
+		.name = "da9052-watchdog",
+	},
+};
+
+static struct regmap_irq da9052_irqs[] = {
+	[DA9052_IRQ_DCIN] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_1,
+	},
+	[DA9052_IRQ_VBUS] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_2,
+	},
+	[DA9052_IRQ_DCINREM] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_3,
+	},
+	[DA9052_IRQ_VBUSREM] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_4,
+	},
+	[DA9052_IRQ_VDDLOW] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_5,
+	},
+	[DA9052_IRQ_ALARM] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_6,
+	},
+	[DA9052_IRQ_SEQRDY] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_7,
+	},
+	[DA9052_IRQ_COMP1V2] = {
+		.reg_offset = 0,
+		.mask = DA9052_IRQ_MASK_POS_8,
+	},
+	[DA9052_IRQ_NONKEY] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_1,
+	},
+	[DA9052_IRQ_IDFLOAT] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_2,
+	},
+	[DA9052_IRQ_IDGND] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_3,
+	},
+	[DA9052_IRQ_CHGEND] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_4,
+	},
+	[DA9052_IRQ_TBAT] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_5,
+	},
+	[DA9052_IRQ_ADC_EOM] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_6,
+	},
+	[DA9052_IRQ_PENDOWN] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_7,
+	},
+	[DA9052_IRQ_TSIREADY] = {
+		.reg_offset = 1,
+		.mask = DA9052_IRQ_MASK_POS_8,
+	},
+	[DA9052_IRQ_GPI0] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_1,
+	},
+	[DA9052_IRQ_GPI1] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_2,
+	},
+	[DA9052_IRQ_GPI2] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_3,
+	},
+	[DA9052_IRQ_GPI3] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_4,
+	},
+	[DA9052_IRQ_GPI4] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_5,
+	},
+	[DA9052_IRQ_GPI5] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_6,
+	},
+	[DA9052_IRQ_GPI6] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_7,
+	},
+	[DA9052_IRQ_GPI7] = {
+		.reg_offset = 2,
+		.mask = DA9052_IRQ_MASK_POS_8,
+	},
+	[DA9052_IRQ_GPI8] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_1,
+	},
+	[DA9052_IRQ_GPI9] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_2,
+	},
+	[DA9052_IRQ_GPI10] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_3,
+	},
+	[DA9052_IRQ_GPI11] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_4,
+	},
+	[DA9052_IRQ_GPI12] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_5,
+	},
+	[DA9052_IRQ_GPI13] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_6,
+	},
+	[DA9052_IRQ_GPI14] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_7,
+	},
+	[DA9052_IRQ_GPI15] = {
+		.reg_offset = 3,
+		.mask = DA9052_IRQ_MASK_POS_8,
+	},
+};
+
+static struct regmap_irq_chip da9052_regmap_irq_chip = {
+	.name = "da9052_irq",
+	.status_base = DA9052_EVENT_A_REG,
+	.mask_base = DA9052_IRQ_MASK_A_REG,
+	.ack_base = DA9052_EVENT_A_REG,
+	.num_regs = DA9052_NUM_IRQ_REGS,
+	.irqs = da9052_irqs,
+	.num_irqs = ARRAY_SIZE(da9052_irqs),
+};
+
+struct regmap_config da9052_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.cache_type = REGCACHE_RBTREE,
+
+	.max_register = DA9052_PAGE1_CON_REG,
+	.readable_reg = da9052_reg_readable,
+	.writeable_reg = da9052_reg_writeable,
+	.volatile_reg = da9052_reg_volatile,
+};
+EXPORT_SYMBOL_GPL(da9052_regmap_config);
+
+int __devinit da9052_device_init(struct da9052 *da9052, u8 chip_id)
+{
+	struct da9052_pdata *pdata = da9052->dev->platform_data;
+	struct irq_desc *desc;
+	int ret;
+
+	mutex_init(&da9052->io_lock);
+
+	if (pdata && pdata->init != NULL)
+		pdata->init(da9052);
+
+	da9052->chip_id = chip_id;
+
+	if (!pdata || !pdata->irq_base)
+		da9052->irq_base = -1;
+	else
+		da9052->irq_base = pdata->irq_base;
+
+	ret = regmap_add_irq_chip(da9052->regmap, da9052->chip_irq,
+				  IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+				  da9052->irq_base, &da9052_regmap_irq_chip,
+				  NULL);
+	if (ret < 0)
+		goto regmap_err;
+
+	desc = irq_to_desc(da9052->chip_irq);
+	da9052->irq_base = regmap_irq_chip_get_base(desc->action->dev_id);
+
+	ret = mfd_add_devices(da9052->dev, -1, da9052_subdev_info,
+			      ARRAY_SIZE(da9052_subdev_info), NULL, 0);
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	mfd_remove_devices(da9052->dev);
+regmap_err:
+	return ret;
+}
+
+void da9052_device_exit(struct da9052 *da9052)
+{
+	regmap_del_irq_chip(da9052->chip_irq,
+			    irq_get_irq_data(da9052->irq_base)->chip_data);
+	mfd_remove_devices(da9052->dev);
+}
+
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("DA9052 MFD Core");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/da9052-i2c.c b/drivers/mfd/da9052-i2c.c
new file mode 100644
index 000000000000..44b97c70a61f
--- /dev/null
+++ b/drivers/mfd/da9052-i2c.c
@@ -0,0 +1,140 @@
+/*
+ * I2C access for DA9052 PMICs.
+ *
+ * Copyright(c) 2011 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ *
+ * 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/device.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/mfd/core.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+
+static int da9052_i2c_enable_multiwrite(struct da9052 *da9052)
+{
+	int reg_val, ret;
+
+	ret = regmap_read(da9052->regmap, DA9052_CONTROL_B_REG, &reg_val);
+	if (ret < 0)
+		return ret;
+
+	if (reg_val & DA9052_CONTROL_B_WRITEMODE) {
+		reg_val &= ~DA9052_CONTROL_B_WRITEMODE;
+		ret = regmap_write(da9052->regmap, DA9052_CONTROL_B_REG,
+				   reg_val);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int __devinit da9052_i2c_probe(struct i2c_client *client,
+				       const struct i2c_device_id *id)
+{
+	struct da9052 *da9052;
+	int ret;
+
+	da9052 = kzalloc(sizeof(struct da9052), GFP_KERNEL);
+	if (!da9052)
+		return -ENOMEM;
+
+	if (!i2c_check_functionality(client->adapter,
+				     I2C_FUNC_SMBUS_BYTE_DATA)) {
+		dev_info(&client->dev, "Error in %s:i2c_check_functionality\n",
+			 __func__);
+		ret = -ENODEV;
+		goto err;
+	}
+
+	da9052->dev = &client->dev;
+	da9052->chip_irq = client->irq;
+
+	i2c_set_clientdata(client, da9052);
+
+	da9052->regmap = regmap_init_i2c(client, &da9052_regmap_config);
+	if (IS_ERR(da9052->regmap)) {
+		ret = PTR_ERR(da9052->regmap);
+		dev_err(&client->dev, "Failed to allocate register map: %d\n",
+			ret);
+		goto err;
+	}
+
+	ret = da9052_i2c_enable_multiwrite(da9052);
+	if (ret < 0)
+		goto err;
+
+	ret = da9052_device_init(da9052, id->driver_data);
+	if (ret != 0)
+		goto err;
+
+	return 0;
+
+err:
+	kfree(da9052);
+	return ret;
+}
+
+static int da9052_i2c_remove(struct i2c_client *client)
+{
+	struct da9052 *da9052 = i2c_get_clientdata(client);
+
+	da9052_device_exit(da9052);
+	kfree(da9052);
+
+	return 0;
+}
+
+static struct i2c_device_id da9052_i2c_id[] = {
+	{"da9052", DA9052},
+	{"da9053-aa", DA9053_AA},
+	{"da9053-ba", DA9053_BA},
+	{"da9053-bb", DA9053_BB},
+	{}
+};
+
+static struct i2c_driver da9052_i2c_driver = {
+	.probe = da9052_i2c_probe,
+	.remove = da9052_i2c_remove,
+	.id_table = da9052_i2c_id,
+	.driver = {
+		.name = "da9052",
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init da9052_i2c_init(void)
+{
+	int ret;
+
+	ret = i2c_add_driver(&da9052_i2c_driver);
+	if (ret != 0) {
+		pr_err("DA9052 I2C registration failed %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+subsys_initcall(da9052_i2c_init);
+
+static void __exit da9052_i2c_exit(void)
+{
+	i2c_del_driver(&da9052_i2c_driver);
+}
+module_exit(da9052_i2c_exit);
+
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("I2C driver for Dialog DA9052 PMIC");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/da9052-spi.c b/drivers/mfd/da9052-spi.c
new file mode 100644
index 000000000000..cdbc7cad326f
--- /dev/null
+++ b/drivers/mfd/da9052-spi.c
@@ -0,0 +1,115 @@
+/*
+ * SPI access for Dialog DA9052 PMICs.
+ *
+ * Copyright(c) 2011 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ *
+ * 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/device.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/mfd/core.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+
+#include <linux/mfd/da9052/da9052.h>
+
+static int da9052_spi_probe(struct spi_device *spi)
+{
+	int ret;
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct da9052 *da9052 = kzalloc(sizeof(struct da9052), GFP_KERNEL);
+
+	if (!da9052)
+		return -ENOMEM;
+
+	spi->mode = SPI_MODE_0 | SPI_CPOL;
+	spi->bits_per_word = 8;
+	spi_setup(spi);
+
+	da9052->dev = &spi->dev;
+	da9052->chip_irq = spi->irq;
+
+	dev_set_drvdata(&spi->dev, da9052);
+
+	da9052_regmap_config.read_flag_mask = 1;
+	da9052_regmap_config.write_flag_mask = 0;
+
+	da9052->regmap = regmap_init_spi(spi, &da9052_regmap_config);
+	if (IS_ERR(da9052->regmap)) {
+		ret = PTR_ERR(da9052->regmap);
+		dev_err(&spi->dev, "Failed to allocate register map: %d\n",
+			ret);
+		goto err;
+	}
+
+	ret = da9052_device_init(da9052, id->driver_data);
+	if (ret != 0)
+		goto err;
+
+	return 0;
+
+err:
+	kfree(da9052);
+	return ret;
+}
+
+static int da9052_spi_remove(struct spi_device *spi)
+{
+	struct da9052 *da9052 = dev_get_drvdata(&spi->dev);
+
+	da9052_device_exit(da9052);
+	kfree(da9052);
+
+	return 0;
+}
+
+static struct spi_device_id da9052_spi_id[] = {
+	{"da9052", DA9052},
+	{"da9053-aa", DA9053_AA},
+	{"da9053-ba", DA9053_BA},
+	{"da9053-bb", DA9053_BB},
+	{}
+};
+
+static struct spi_driver da9052_spi_driver = {
+	.probe = da9052_spi_probe,
+	.remove = __devexit_p(da9052_spi_remove),
+	.id_table = da9052_spi_id,
+	.driver = {
+		.name = "da9052",
+		.bus = &spi_bus_type,
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init da9052_spi_init(void)
+{
+	int ret;
+
+	ret = spi_register_driver(&da9052_spi_driver);
+	if (ret != 0) {
+		pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+subsys_initcall(da9052_spi_init);
+
+static void __exit da9052_spi_exit(void)
+{
+	spi_unregister_driver(&da9052_spi_driver);
+}
+module_exit(da9052_spi_exit);
+
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
+MODULE_LICENSE("GPL");