Merge tag 'regmap-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown: "For v4.11 activity on the regmap API has literally doubled, there are two patches this release: - fixes from Charles Keepax to make the kerneldoc generate correctly - a cleanup from Geliang Tang using rb_entry() rather than open coding it with container_of()" * tag 'regmap-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: Fixup the kernel-doc comments on functions/structures regmap: use rb_entry()
author: Linus Torvalds <torvalds@linux-foundation.org> 2017-02-20 17:20:34 -0800
committer: Linus Torvalds <torvalds@linux-foundation.org> 2017-02-20 17:20:34 -0800
commit: b3de5ad688f0f52457e73767f95a640ab4158d0d (patch)
tree: 9a29d171cc2468005bd9d5b068dc6f027aaffb22
parent: 27a67e0f983567574ef659520d930f82cf65125a (diff)
parent: 90e51e6dd27d6418358ec6c9964d54ca9c25c1b9 (diff)
5 files changed, 184 insertions, 149 deletions
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index b11af3f2c1db..b1e9aae9a5d0 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -81,7 +81,7 @@ static struct regcache_rbtree_node *regcache_rbtree_lookup(struct regmap *map,
 
 	node = rbtree_ctx->root.rb_node;
 	while (node) {
-		rbnode = container_of(node, struct regcache_rbtree_node, node);
+		rbnode = rb_entry(node, struct regcache_rbtree_node, node);
 		regcache_rbtree_get_base_top_reg(map, rbnode, &base_reg,
 						 &top_reg);
 		if (reg >= base_reg && reg <= top_reg) {
@@ -108,8 +108,7 @@ static int regcache_rbtree_insert(struct regmap *map, struct rb_root *root,
 	parent = NULL;
 	new = &root->rb_node;
 	while (*new) {
-		rbnode_tmp = container_of(*new, struct regcache_rbtree_node,
-					  node);
+		rbnode_tmp = rb_entry(*new, struct regcache_rbtree_node, node);
 		/* base and top registers of the current rbnode */
 		regcache_rbtree_get_base_top_reg(map, rbnode_tmp, &base_reg_tmp,
 						 &top_reg_tmp);
@@ -152,7 +151,7 @@ static int rbtree_show(struct seq_file *s, void *ignored)
 
 	for (node = rb_first(&rbtree_ctx->root); node != NULL;
 	     node = rb_next(node)) {
-		n = container_of(node, struct regcache_rbtree_node, node);
+		n = rb_entry(node, struct regcache_rbtree_node, node);
 		mem_size += sizeof(*n);
 		mem_size += (n->blklen * map->cache_word_size);
 		mem_size += BITS_TO_LONGS(n->blklen) * sizeof(long);
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 4e582561e1e7..b0a0dcf32fb7 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -224,7 +224,7 @@ void regcache_exit(struct regmap *map)
 }
 
 /**
- * regcache_read: Fetch the value of a given register from the cache.
+ * regcache_read - Fetch the value of a given register from the cache.
  *
  * @map: map to configure.
  * @reg: The register index.
@@ -255,7 +255,7 @@ int regcache_read(struct regmap *map,
 }
 
 /**
- * regcache_write: Set the value of a given register in the cache.
+ * regcache_write - Set the value of a given register in the cache.
  *
  * @map: map to configure.
  * @reg: The register index.
@@ -328,7 +328,7 @@ static int regcache_default_sync(struct regmap *map, unsigned int min,
 }
 
 /**
- * regcache_sync: Sync the register cache with the hardware.
+ * regcache_sync - Sync the register cache with the hardware.
  *
  * @map: map to configure.
  *
@@ -396,7 +396,7 @@ out:
 EXPORT_SYMBOL_GPL(regcache_sync);
 
 /**
- * regcache_sync_region: Sync part  of the register cache with the hardware.
+ * regcache_sync_region - Sync part  of the register cache with the hardware.
  *
  * @map: map to sync.
  * @min: first register to sync
@@ -452,7 +452,7 @@ out:
 EXPORT_SYMBOL_GPL(regcache_sync_region);
 
 /**
- * regcache_drop_region: Discard part of the register cache
+ * regcache_drop_region - Discard part of the register cache
  *
  * @map: map to operate on
  * @min: first register to discard
@@ -483,10 +483,10 @@ int regcache_drop_region(struct regmap *map, unsigned int min,
 EXPORT_SYMBOL_GPL(regcache_drop_region);
 
 /**
- * regcache_cache_only: Put a register map into cache only mode
+ * regcache_cache_only - Put a register map into cache only mode
  *
  * @map: map to configure
- * @cache_only: flag if changes should be written to the hardware
+ * @enable: flag if changes should be written to the hardware
  *
  * When a register map is marked as cache only writes to the register
  * map API will only update the register cache, they will not cause
@@ -505,7 +505,7 @@ void regcache_cache_only(struct regmap *map, bool enable)
 EXPORT_SYMBOL_GPL(regcache_cache_only);
 
 /**
- * regcache_mark_dirty: Indicate that HW registers were reset to default values
+ * regcache_mark_dirty - Indicate that HW registers were reset to default values
  *
  * @map: map to mark
  *
@@ -527,10 +527,10 @@ void regcache_mark_dirty(struct regmap *map)
 EXPORT_SYMBOL_GPL(regcache_mark_dirty);
 
 /**
- * regcache_cache_bypass: Put a register map into cache bypass mode
+ * regcache_cache_bypass - Put a register map into cache bypass mode
  *
  * @map: map to configure
- * @cache_bypass: flag if changes should not be written to the cache
+ * @enable: flag if changes should not be written to the cache
  *
  * When a register map is marked with the cache bypass option, writes
  * to the register map API will only update the hardware and not the
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index ec262476d043..cd54189f2b1d 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -398,13 +398,14 @@ static const struct irq_domain_ops regmap_domain_ops = {
 };
 
 /**
- * regmap_add_irq_chip(): Use standard regmap IRQ controller handling
+ * 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
+ * @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.
+ * @irq_base: Allocate at specific IRQ number if irq_base > 0.
+ * @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.
  *
@@ -659,12 +660,12 @@ err_alloc:
 EXPORT_SYMBOL_GPL(regmap_add_irq_chip);
 
 /**
- * regmap_del_irq_chip(): Stop interrupt handling for a regmap 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()
+ * @d: &regmap_irq_chip_data allocated by regmap_add_irq_chip()
  *
- * This function also dispose all mapped irq on chip.
+ * This function also disposes of all mapped IRQs on the chip.
  */
 void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *d)
 {
@@ -723,18 +724,19 @@ static int devm_regmap_irq_chip_match(struct device *dev, void *res, void *data)
 }
 
 /**
- * devm_regmap_add_irq_chip(): Resource manager regmap_add_irq_chip()
+ * devm_regmap_add_irq_chip() - Resource manager regmap_add_irq_chip()
  *
- * @dev:       The device pointer on which irq_chip belongs to.
- * @map:       The regmap for the device.
- * @irq:       The IRQ the device uses to signal interrupts
+ * @dev: The device pointer on which irq_chip belongs to.
+ * @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
+ * @irq_base: Allocate at specific IRQ number if irq_base > 0.
+ * @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.
  *
- * The regmap_irq_chip data automatically be released when the device is
+ * The &regmap_irq_chip_data will be automatically released when the device is
  * unbound.
  */
 int devm_regmap_add_irq_chip(struct device *dev, struct regmap *map, int irq,
@@ -765,11 +767,13 @@ int devm_regmap_add_irq_chip(struct device *dev, struct regmap *map, int irq,
 EXPORT_SYMBOL_GPL(devm_regmap_add_irq_chip);
 
 /**
- * devm_regmap_del_irq_chip(): Resource managed regmap_del_irq_chip()
+ * devm_regmap_del_irq_chip() - Resource managed regmap_del_irq_chip()
  *
  * @dev: Device for which which resource was allocated.
- * @irq: Primary IRQ for the device
- * @d:   regmap_irq_chip_data allocated by regmap_add_irq_chip()
+ * @irq: Primary IRQ for the device.
+ * @data: &regmap_irq_chip_data allocated by regmap_add_irq_chip().
+ *
+ * A resource managed version of regmap_del_irq_chip().
  */
 void devm_regmap_del_irq_chip(struct device *dev, int irq,
 			      struct regmap_irq_chip_data *data)
@@ -786,11 +790,11 @@ void devm_regmap_del_irq_chip(struct device *dev, int irq,
 EXPORT_SYMBOL_GPL(devm_regmap_del_irq_chip);
 
 /**
- * regmap_irq_chip_get_base(): Retrieve interrupt base for a regmap 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.
  *
- * @data: regmap_irq controller to operate on.
+ * Useful for drivers to request their own IRQs.
  */
 int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data)
 {
@@ -800,12 +804,12 @@ int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data)
 EXPORT_SYMBOL_GPL(regmap_irq_chip_get_base);
 
 /**
- * regmap_irq_get_virq(): Map an interrupt on a chip to a virtual IRQ
+ * regmap_irq_get_virq() - Map an interrupt on a chip to a virtual IRQ
  *
- * Useful for drivers to request their own IRQs.
+ * @data: regmap irq controller to operate on.
+ * @irq: index of the interrupt requested in the chip IRQs.
  *
- * @data: regmap_irq controller to operate on.
- * @irq: index of the interrupt requested in the chip IRQs
+ * Useful for drivers to request their own IRQs.
  */
 int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq)
 {
@@ -818,14 +822,14 @@ int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq)
 EXPORT_SYMBOL_GPL(regmap_irq_get_virq);
 
 /**
- * regmap_irq_get_domain(): Retrieve the irq_domain for the chip
+ * regmap_irq_get_domain() - Retrieve the irq_domain for the chip
+ *
+ * @data: regmap_irq controller to operate on.
  *
  * Useful for drivers to request their own IRQs and for integration
  * with subsystems.  For ease of integration NULL is accepted as a
  * domain, allowing devices to just call this even if no domain is
  * allocated.
- *
- * @data: regmap_irq controller to operate on.
  */
 struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data)
 {
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index ae63bb0875ea..b9a779a4a739 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -459,7 +459,7 @@ static bool _regmap_range_add(struct regmap *map,
 
 	while (*new) {
 		struct regmap_range_node *this =
-			container_of(*new, struct regmap_range_node, node);
+			rb_entry(*new, struct regmap_range_node, node);
 
 		parent = *new;
 		if (data->range_max < this->range_min)
@@ -483,7 +483,7 @@ static struct regmap_range_node *_regmap_range_lookup(struct regmap *map,
 
 	while (node) {
 		struct regmap_range_node *this =
-			container_of(node, struct regmap_range_node, node);
+			rb_entry(node, struct regmap_range_node, node);
 
 		if (reg < this->range_min)
 			node = node->rb_left;
@@ -1091,8 +1091,7 @@ static void regmap_field_init(struct regmap_field *rm_field,
 }
 
 /**
- * devm_regmap_field_alloc(): Allocate and initialise a register field
- * in a register map.
+ * devm_regmap_field_alloc() - Allocate and initialise a register field.
  *
  * @dev: Device that will be interacted with
  * @regmap: regmap bank in which this register field is located.
@@ -1118,13 +1117,15 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev,
 EXPORT_SYMBOL_GPL(devm_regmap_field_alloc);
 
 /**
- * devm_regmap_field_free(): Free register field allocated using
- * devm_regmap_field_alloc. Usally drivers need not call this function,
- * as the memory allocated via devm will be freed as per device-driver
- * life-cyle.
+ * devm_regmap_field_free() - Free a register field allocated using
+ *                            devm_regmap_field_alloc.
  *
  * @dev: Device that will be interacted with
  * @field: regmap field which should be freed.
+ *
+ * Free register field allocated using devm_regmap_field_alloc(). Usually
+ * drivers need not call this function, as the memory allocated via devm
+ * will be freed as per device-driver life-cyle.
  */
 void devm_regmap_field_free(struct device *dev,
 	struct regmap_field *field)
@@ -1134,8 +1135,7 @@ void devm_regmap_field_free(struct device *dev,
 EXPORT_SYMBOL_GPL(devm_regmap_field_free);
 
 /**
- * regmap_field_alloc(): Allocate and initialise a register field
- * in a register map.
+ * regmap_field_alloc() - Allocate and initialise a register field.
  *
  * @regmap: regmap bank in which this register field is located.
  * @reg_field: Register field with in the bank.
@@ -1159,7 +1159,8 @@ struct regmap_field *regmap_field_alloc(struct regmap *regmap,
 EXPORT_SYMBOL_GPL(regmap_field_alloc);
 
 /**
- * regmap_field_free(): Free register field allocated using regmap_field_alloc
+ * regmap_field_free() - Free register field allocated using
+ *                       regmap_field_alloc.
  *
  * @field: regmap field which should be freed.
  */
@@ -1170,7 +1171,7 @@ void regmap_field_free(struct regmap_field *field)
 EXPORT_SYMBOL_GPL(regmap_field_free);
 
 /**
- * regmap_reinit_cache(): Reinitialise the current register cache
+ * regmap_reinit_cache() - Reinitialise the current register cache
  *
  * @map: Register map to operate on.
  * @config: New configuration.  Only the cache data will be used.
@@ -1205,7 +1206,9 @@ int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
 EXPORT_SYMBOL_GPL(regmap_reinit_cache);
 
 /**
- * regmap_exit(): Free a previously allocated register map
+ * regmap_exit() - Free a previously allocated register map
+ *
+ * @map: Register map to operate on.
  */
 void regmap_exit(struct regmap *map)
 {
@@ -1245,7 +1248,7 @@ static int dev_get_regmap_match(struct device *dev, void *res, void *data)
 }
 
 /**
- * dev_get_regmap(): Obtain the regmap (if any) for a device
+ * dev_get_regmap() - Obtain the regmap (if any) for a device
  *
  * @dev: Device to retrieve the map for
  * @name: Optional name for the register map, usually NULL.
@@ -1268,7 +1271,7 @@ struct regmap *dev_get_regmap(struct device *dev, const char *name)
 EXPORT_SYMBOL_GPL(dev_get_regmap);
 
 /**
- * regmap_get_device(): Obtain the device from a regmap
+ * regmap_get_device() - Obtain the device from a regmap
  *
  * @map: Register map to operate on.
  *
@@ -1654,7 +1657,7 @@ int _regmap_write(struct regmap *map, unsigned int reg,
 }
 
 /**
- * regmap_write(): Write a value to a single register
+ * regmap_write() - Write a value to a single register
  *
  * @map: Register map to write to
  * @reg: Register to write to
@@ -1681,7 +1684,7 @@ int regmap_write(struct regmap *map, unsigned int reg, unsigned int val)
 EXPORT_SYMBOL_GPL(regmap_write);
 
 /**
- * regmap_write_async(): Write a value to a single register asynchronously
+ * regmap_write_async() - Write a value to a single register asynchronously
  *
  * @map: Register map to write to
  * @reg: Register to write to
@@ -1712,7 +1715,7 @@ int regmap_write_async(struct regmap *map, unsigned int reg, unsigned int val)
 EXPORT_SYMBOL_GPL(regmap_write_async);
 
 /**
- * regmap_raw_write(): Write raw values to one or more registers
+ * regmap_raw_write() - Write raw values to one or more registers
  *
  * @map: Register map to write to
  * @reg: Initial register to write to
@@ -1750,9 +1753,8 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
 EXPORT_SYMBOL_GPL(regmap_raw_write);
 
 /**
- * regmap_field_update_bits_base():
- *	Perform a read/modify/write cycle on the register field
- *	with change, async, force option
+ * regmap_field_update_bits_base() - Perform a read/modify/write cycle a
+ *                                   register field.
  *
  * @field: Register field to write to
  * @mask: Bitmask to change
@@ -1761,6 +1763,9 @@ EXPORT_SYMBOL_GPL(regmap_raw_write);
  * @async: Boolean indicating asynchronously
  * @force: Boolean indicating use force update
  *
+ * Perform a read/modify/write cycle on the register field with change,
+ * async, force option.
+ *
  * A value of zero will be returned on success, a negative errno will
  * be returned in error cases.
  */
@@ -1777,9 +1782,8 @@ int regmap_field_update_bits_base(struct regmap_field *field,
 EXPORT_SYMBOL_GPL(regmap_field_update_bits_base);
 
 /**
- * regmap_fields_update_bits_base():
- *	Perform a read/modify/write cycle on the register field
- *	with change, async, force option
+ * regmap_fields_update_bits_base() - Perform a read/modify/write cycle a
+ *                                    register field with port ID
  *
  * @field: Register field to write to
  * @id: port ID
@@ -1808,8 +1812,8 @@ int regmap_fields_update_bits_base(struct regmap_field *field,  unsigned int id,
 }
 EXPORT_SYMBOL_GPL(regmap_fields_update_bits_base);
 
-/*
- * regmap_bulk_write(): Write multiple registers to the device
+/**
+ * regmap_bulk_write() - Write multiple registers to the device
  *
  * @map: Register map to write to
  * @reg: First register to be write from
@@ -2174,18 +2178,18 @@ static int _regmap_multi_reg_write(struct regmap *map,
 	return _regmap_raw_multi_reg_write(map, regs, num_regs);
 }
 
-/*
- * regmap_multi_reg_write(): Write multiple registers to the device
- *
- * where the set of register,value pairs are supplied in any order,
- * possibly not all in a single range.
+/**
+ * regmap_multi_reg_write() - Write multiple registers to the device
  *
  * @map: Register map to write to
  * @regs: Array of structures containing register,value to be written
  * @num_regs: Number of registers to write
  *
+ * Write multiple registers to the device where the set of register, value
+ * pairs are supplied in any order, possibly not all in a single range.
+ *
  * The 'normal' block write mode will send ultimately send data on the
- * target bus as R,V1,V2,V3,..,Vn where successively higer registers are
+ * target bus as R,V1,V2,V3,..,Vn where successively higher registers are
  * addressed. However, this alternative block multi write mode will send
  * the data as R1,V1,R2,V2,..,Rn,Vn on the target bus. The target device
  * must of course support the mode.
@@ -2208,16 +2212,17 @@ int regmap_multi_reg_write(struct regmap *map, const struct reg_sequence *regs,
 }
 EXPORT_SYMBOL_GPL(regmap_multi_reg_write);
 
-/*
- * regmap_multi_reg_write_bypassed(): Write multiple registers to the
- *                                    device but not the cache
- *
- * where the set of register are supplied in any order
+/**
+ * regmap_multi_reg_write_bypassed() - Write multiple registers to the
+ *                                     device but not the cache
  *
  * @map: Register map to write to
  * @regs: Array of structures containing register,value to be written
  * @num_regs: Number of registers to write
  *
+ * Write multiple registers to the device but not the cache where the set
+ * of register are supplied in any order.
+ *
  * This function is intended to be used for writing a large block of data
  * atomically to the device in single transfer for those I2C client devices
  * that implement this alternative block write mode.
@@ -2248,8 +2253,8 @@ int regmap_multi_reg_write_bypassed(struct regmap *map,
 EXPORT_SYMBOL_GPL(regmap_multi_reg_write_bypassed);
 
 /**
- * regmap_raw_write_async(): Write raw values to one or more registers
- *                           asynchronously
+ * regmap_raw_write_async() - Write raw values to one or more registers
+ *                            asynchronously
  *
  * @map: Register map to write to
  * @reg: Initial register to write to
@@ -2385,7 +2390,7 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
 }
 
 /**
- * regmap_read(): Read a value from a single register
+ * regmap_read() - Read a value from a single register
  *
  * @map: Register map to read from
  * @reg: Register to be read from
@@ -2412,7 +2417,7 @@ int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val)
 EXPORT_SYMBOL_GPL(regmap_read);
 
 /**
- * regmap_raw_read(): Read raw data from the device
+ * regmap_raw_read() - Read raw data from the device
  *
  * @map: Register map to read from
  * @reg: First register to be read from
@@ -2477,7 +2482,7 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
 EXPORT_SYMBOL_GPL(regmap_raw_read);
 
 /**
- * regmap_field_read(): Read a value to a single register field
+ * regmap_field_read() - Read a value to a single register field
  *
  * @field: Register field to read from
  * @val: Pointer to store read value
@@ -2502,7 +2507,7 @@ int regmap_field_read(struct regmap_field *field, unsigned int *val)
 EXPORT_SYMBOL_GPL(regmap_field_read);
 
 /**
- * regmap_fields_read(): Read a value to a single register field with port ID
+ * regmap_fields_read() - Read a value to a single register field with port ID
  *
  * @field: Register field to read from
  * @id: port ID
@@ -2535,7 +2540,7 @@ int regmap_fields_read(struct regmap_field *field, unsigned int id,
 EXPORT_SYMBOL_GPL(regmap_fields_read);
 
 /**
- * regmap_bulk_read(): Read multiple registers from the device
+ * regmap_bulk_read() - Read multiple registers from the device
  *
  * @map: Register map to read from
  * @reg: First register to be read from
@@ -2692,9 +2697,7 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
 }
 
 /**
- * regmap_update_bits_base:
- *	Perform a read/modify/write cycle on the
- *	register map with change, async, force option
+ * regmap_update_bits_base() - Perform a read/modify/write cycle on a register
  *
  * @map: Register map to update
  * @reg: Register to update
@@ -2704,10 +2707,14 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
  * @async: Boolean indicating asynchronously
  * @force: Boolean indicating use force update
  *
- * if async was true,
- * With most buses the read must be done synchronously so this is most
- * useful for devices with a cache which do not need to interact with
- * the hardware to determine the current register value.
+ * Perform a read/modify/write cycle on a register map with change, async, force
+ * options.
+ *
+ * If async is true:
+ *
+ * With most buses the read must be done synchronously so this is most useful
+ * for devices with a cache which do not need to interact with the hardware to
+ * determine the current register value.
  *
  * Returns zero for success, a negative number on error.
  */
@@ -2765,7 +2772,7 @@ static int regmap_async_is_done(struct regmap *map)
 }
 
 /**
- * regmap_async_complete: Ensure all asynchronous I/O has completed.
+ * regmap_async_complete - Ensure all asynchronous I/O has completed.
  *
  * @map: Map to operate on.
  *
@@ -2797,8 +2804,8 @@ int regmap_async_complete(struct regmap *map)
 EXPORT_SYMBOL_GPL(regmap_async_complete);
 
 /**
- * regmap_register_patch: Register and apply register updates to be applied
- *                        on device initialistion
+ * regmap_register_patch - Register and apply register updates to be applied
+ *                         on device initialistion
  *
  * @map: Register map to apply updates to.
  * @regs: Values to update.
@@ -2855,8 +2862,10 @@ int regmap_register_patch(struct regmap *map, const struct reg_sequence *regs,
 }
 EXPORT_SYMBOL_GPL(regmap_register_patch);
 
-/*
- * regmap_get_val_bytes(): Report the size of a register value
+/**
+ * regmap_get_val_bytes() - Report the size of a register value
+ *
+ * @map: Register map to operate on.
  *
  * Report the size of a register value, mainly intended to for use by
  * generic infrastructure built on top of regmap.
@@ -2871,7 +2880,9 @@ int regmap_get_val_bytes(struct regmap *map)
 EXPORT_SYMBOL_GPL(regmap_get_val_bytes);
 
 /**
- * regmap_get_max_register(): Report the max register value
+ * regmap_get_max_register() - Report the max register value
+ *
+ * @map: Register map to operate on.
  *
  * Report the max register value, mainly intended to for use by
  * generic infrastructure built on top of regmap.
@@ -2883,7 +2894,9 @@ int regmap_get_max_register(struct regmap *map)
 EXPORT_SYMBOL_GPL(regmap_get_max_register);
 
 /**
- * regmap_get_reg_stride(): Report the register address stride
+ * regmap_get_reg_stride() - Report the register address stride
+ *
+ * @map: Register map to operate on.
  *
  * Report the register address stride, mainly intended to for use by
  * generic infrastructure built on top of regmap.
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index f6673132431d..e88649225a60 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -40,12 +40,13 @@ enum regcache_type {
 };
 
 /**
- * Default value for a register.  We use an array of structs rather
- * than a simple array as many modern devices have very sparse
- * register maps.
+ * struct reg_default - Default value for a register.
  *
  * @reg: Register address.
  * @def: Register default value.
+ *
+ * We use an array of structs rather than a simple array as many modern devices
+ * have very sparse register maps.
  */
 struct reg_default {
 	unsigned int reg;
@@ -53,12 +54,14 @@ struct reg_default {
 };
 
 /**
- * Register/value pairs for sequences of writes with an optional delay in
- * microseconds to be applied after each write.
+ * struct reg_sequence - An individual write from a sequence of writes.
  *
  * @reg: Register address.
  * @def: Register value.
  * @delay_us: Delay to be applied after the register write in microseconds
+ *
+ * Register/value pairs for sequences of writes with an optional delay in
+ * microseconds to be applied after each write.
  */
 struct reg_sequence {
 	unsigned int reg;
@@ -98,6 +101,7 @@ struct reg_sequence {
 
 /**
  * regmap_read_poll_timeout - Poll until a condition is met or a timeout occurs
+ *
  * @map: Regmap to read from
  * @addr: Address to poll
  * @val: Unsigned integer variable to read the value into
@@ -146,8 +150,8 @@ enum regmap_endian {
 };
 
 /**
- * A register range, used for access related checks
- * (readable/writeable/volatile/precious checks)
+ * struct regmap_range - A register range, used for access related checks
+ *                       (readable/writeable/volatile/precious checks)
  *
  * @range_min: address of first register
  * @range_max: address of last register
@@ -159,16 +163,18 @@ struct regmap_range {
 
 #define regmap_reg_range(low, high) { .range_min = low, .range_max = high, }
 
-/*
- * A table of ranges including some yes ranges and some no ranges.
- * If a register belongs to a no_range, the corresponding check function
- * will return false. If a register belongs to a yes range, the corresponding
- * check function will return true. "no_ranges" are searched first.
+/**
+ * struct regmap_access_table - A table of register ranges for access checks
  *
  * @yes_ranges : pointer to an array of regmap ranges used as "yes ranges"
  * @n_yes_ranges: size of the above array
  * @no_ranges: pointer to an array of regmap ranges used as "no ranges"
  * @n_no_ranges: size of the above array
+ *
+ * A table of ranges including some yes ranges and some no ranges.
+ * If a register belongs to a no_range, the corresponding check function
+ * will return false. If a register belongs to a yes range, the corresponding
+ * check function will return true. "no_ranges" are searched first.
  */
 struct regmap_access_table {
 	const struct regmap_range *yes_ranges;
@@ -181,7 +187,7 @@ typedef void (*regmap_lock)(void *);
 typedef void (*regmap_unlock)(void *);
 
 /**
- * Configuration for the register map of a device.
+ * struct regmap_config - Configuration for the register map of a device.
  *
  * @name: Optional name of the regmap. Useful when a device has multiple
  *        register regions.
@@ -314,22 +320,24 @@ struct regmap_config {
 };
 
 /**
- * Configuration for indirectly accessed or paged registers.
- * Registers, mapped to this virtual range, are accessed in two steps:
- *     1. page selector register update;
- *     2. access through data window registers.
+ * struct regmap_range_cfg - Configuration for indirectly accessed or paged
+ *                           registers.
  *
  * @name: Descriptive name for diagnostics
  *
  * @range_min: Address of the lowest register address in virtual range.
  * @range_max: Address of the highest register in virtual range.
  *
- * @page_sel_reg: Register with selector field.
- * @page_sel_mask: Bit shift for selector value.
- * @page_sel_shift: Bit mask for selector value.
+ * @selector_reg: Register with selector field.
+ * @selector_mask: Bit shift for selector value.
+ * @selector_shift: Bit mask for selector value.
  *
  * @window_start: Address of first (lowest) register in data window.
  * @window_len: Number of registers in data window.
+ *
+ * Registers, mapped to this virtual range, are accessed in two steps:
+ *     1. page selector register update;
+ *     2. access through data window registers.
  */
 struct regmap_range_cfg {
 	const char *name;
@@ -372,7 +380,8 @@ typedef struct regmap_async *(*regmap_hw_async_alloc)(void);
 typedef void (*regmap_hw_free_context)(void *context);
 
 /**
- * Description of a hardware bus for the register map infrastructure.
+ * struct regmap_bus - Description of a hardware bus for the register map
+ *                     infrastructure.
  *
  * @fast_io: Register IO is fast. Use a spinlock instead of a mutex
  *	     to perform locking. This field is ignored if custom lock/unlock
@@ -385,6 +394,10 @@ typedef void (*regmap_hw_free_context)(void *context);
  *               must serialise with respect to non-async I/O.
  * @reg_write: Write a single register value to the given register address. This
  *             write operation has to complete when returning from the function.
+ * @reg_update_bits: Update bits operation to be used against volatile
+ *                   registers, intended for devices supporting some mechanism
+ *                   for setting clearing bits without having to
+ *                   read/modify/write.
  * @read: Read operation.  Data is returned in the buffer used to transmit
  *         data.
  * @reg_read: Read a single register value from a given register address.
@@ -514,7 +527,7 @@ struct regmap *__devm_regmap_init_ac97(struct snd_ac97 *ac97,
 #endif
 
 /**
- * regmap_init(): Initialise register map
+ * regmap_init() - Initialise register map
  *
  * @dev: Device that will be interacted with
  * @bus: Bus-specific callbacks to use with device
@@ -532,7 +545,7 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 		      const struct regmap_config *config);
 
 /**
- * regmap_init_i2c(): Initialise register map
+ * regmap_init_i2c() - Initialise register map
  *
  * @i2c: Device that will be interacted with
  * @config: Configuration for register map
@@ -545,9 +558,9 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 				i2c, config)
 
 /**
- * regmap_init_spi(): Initialise register map
+ * regmap_init_spi() - Initialise register map
  *
- * @spi: Device that will be interacted with
+ * @dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
@@ -558,8 +571,9 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 				dev, config)
 
 /**
- * regmap_init_spmi_base(): Create regmap for the Base register space
- * @sdev:	SPMI device that will be interacted with
+ * regmap_init_spmi_base() - Create regmap for the Base register space
+ *
+ * @dev:	SPMI device that will be interacted with
  * @config:	Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
@@ -570,8 +584,9 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 				dev, config)
 
 /**
- * regmap_init_spmi_ext(): Create regmap for Ext register space
- * @sdev:	Device that will be interacted with
+ * regmap_init_spmi_ext() - Create regmap for Ext register space
+ *
+ * @dev:	Device that will be interacted with
  * @config:	Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer to
@@ -582,7 +597,7 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 				dev, config)
 
 /**
- * regmap_init_mmio_clk(): Initialise register map with register clock
+ * regmap_init_mmio_clk() - Initialise register map with register clock
  *
  * @dev: Device that will be interacted with
  * @clk_id: register clock consumer ID
@@ -597,7 +612,7 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 				dev, clk_id, regs, config)
 
 /**
- * regmap_init_mmio(): Initialise register map
+ * regmap_init_mmio() - Initialise register map
  *
  * @dev: Device that will be interacted with
  * @regs: Pointer to memory-mapped IO region
@@ -610,7 +625,7 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 	regmap_init_mmio_clk(dev, NULL, regs, config)
 
 /**
- * regmap_init_ac97(): Initialise AC'97 register map
+ * regmap_init_ac97() - Initialise AC'97 register map
  *
  * @ac97: Device that will be interacted with
  * @config: Configuration for register map
@@ -624,7 +639,7 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 
 /**
- * devm_regmap_init(): Initialise managed register map
+ * devm_regmap_init() - Initialise managed register map
  *
  * @dev: Device that will be interacted with
  * @bus: Bus-specific callbacks to use with device
@@ -641,7 +656,7 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 				dev, bus, bus_context, config)
 
 /**
- * devm_regmap_init_i2c(): Initialise managed register map
+ * devm_regmap_init_i2c() - Initialise managed register map
  *
  * @i2c: Device that will be interacted with
  * @config: Configuration for register map
@@ -655,9 +670,9 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 				i2c, config)
 
 /**
- * devm_regmap_init_spi(): Initialise register map
+ * devm_regmap_init_spi() - Initialise register map
  *
- * @spi: Device that will be interacted with
+ * @dev: Device that will be interacted with
  * @config: Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
@@ -669,8 +684,9 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 				dev, config)
 
 /**
- * devm_regmap_init_spmi_base(): Create managed regmap for Base register space
- * @sdev:	SPMI device that will be interacted with
+ * devm_regmap_init_spmi_base() - Create managed regmap for Base register space
+ *
+ * @dev:	SPMI device that will be interacted with
  * @config:	Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
@@ -682,8 +698,9 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 				dev, config)
 
 /**
- * devm_regmap_init_spmi_ext(): Create managed regmap for Ext register space
- * @sdev:	SPMI device that will be interacted with
+ * devm_regmap_init_spmi_ext() - Create managed regmap for Ext register space
+ *
+ * @dev:	SPMI device that will be interacted with
  * @config:	Configuration for register map
  *
  * The return value will be an ERR_PTR() on error or a valid pointer
@@ -695,7 +712,7 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 				dev, config)
 
 /**
- * devm_regmap_init_mmio_clk(): Initialise managed register map with clock
+ * devm_regmap_init_mmio_clk() - Initialise managed register map with clock
  *
  * @dev: Device that will be interacted with
  * @clk_id: register clock consumer ID
@@ -711,7 +728,7 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 				dev, clk_id, regs, config)
 
 /**
- * devm_regmap_init_mmio(): Initialise managed register map
+ * devm_regmap_init_mmio() - Initialise managed register map
  *
  * @dev: Device that will be interacted with
  * @regs: Pointer to memory-mapped IO region
@@ -725,7 +742,7 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 	devm_regmap_init_mmio_clk(dev, NULL, regs, config)
 
 /**
- * devm_regmap_init_ac97(): Initialise AC'97 register map
+ * devm_regmap_init_ac97() - Initialise AC'97 register map
  *
  * @ac97: Device that will be interacted with
  * @config: Configuration for register map
@@ -800,7 +817,7 @@ bool regmap_reg_in_ranges(unsigned int reg,
 			  unsigned int nranges);
 
 /**
- * Description of an register field
+ * struct reg_field - Description of an register field
  *
  * @reg: Offset of the register within the regmap bank
  * @lsb: lsb of the register field.
@@ -841,7 +858,7 @@ int regmap_fields_update_bits_base(struct regmap_field *field,  unsigned int id,
 				   bool *change, bool async, bool force);
 
 /**
- * Description of an IRQ for the generic regmap irq_chip.
+ * struct regmap_irq - Description of an IRQ for the generic regmap irq_chip.
  *
  * @reg_offset: Offset of the status/mask register within the bank
  * @mask:       Mask used to flag/control the register.
@@ -861,9 +878,7 @@ struct regmap_irq {
 	[_irq] = { .reg_offset = (_off), .mask = (_mask) }
 
 /**
- * Description of a generic regmap irq_chip.  This is not intended to
- * handle every possible interrupt controller, but it should handle a
- * substantial proportion of those that are found in the wild.
+ * struct regmap_irq_chip - Description of a generic regmap irq_chip.
  *
  * @name:        Descriptive name for IRQ controller.
  *
@@ -897,6 +912,10 @@ struct regmap_irq {
  *		     after handling the interrupts in regmap_irq_handler().
  * @irq_drv_data:    Driver specific IRQ data which is passed as parameter when
  *		     driver specific pre/post interrupt handler is called.
+ *
+ * This is not intended to handle every possible interrupt controller, but
+ * it should handle a substantial proportion of those that are found in the
+ * wild.
  */
 struct regmap_irq_chip {
 	const char *name;
author	Linus Torvalds <torvalds@linux-foundation.org>	2017-02-20 17:20:34 -0800
committer	Linus Torvalds <torvalds@linux-foundation.org>	2017-02-20 17:20:34 -0800
commit	b3de5ad688f0f52457e73767f95a640ab4158d0d (patch)
tree	9a29d171cc2468005bd9d5b068dc6f027aaffb22
parent	27a67e0f983567574ef659520d930f82cf65125a (diff)
parent	90e51e6dd27d6418358ec6c9964d54ca9c25c1b9 (diff)