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Merge remote-tracking branches 'regmap/topic/doc' and 'regmap/topic/rbtree' into regmap-next

This commit is contained in:
Mark Brown 2017-02-03 12:34:59 +01:00
parent 3b94bdd181 2cf8e2dfdf 671a911bb9
commit 90e51e6dd2
5 changed files with 184 additions and 149 deletions
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7
drivers/base/regmap/regcache-rbtree.c
View File

@ -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);

20
drivers/base/regmap/regcache.c
View File

@ -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 @@ int regcache_sync(struct regmap *map)
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 @@ int regcache_sync_region(struct regmap *map, unsigned int min,
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

62
drivers/base/regmap/regmap-irq.c
View File

@ -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 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
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
*
* @data: regmap irq controller to operate on.
*
* 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)
{
@ -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
*
* @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.
*
* @data: regmap_irq controller to operate on.
* @irq: index of the interrupt requested in the chip 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)
{

129
drivers/base/regmap/regmap.c
View File

@ -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.

115
include/linux/regmap.h
View File

@ -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;