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regmap: Updates for v3.9

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Several nice new features and performance improvements here, especially
 the first:
 
  - Support for using the cache infrastructure without the physical I/O,
    allowing devices which don't fit the physical model regmap has to
    take advantage of the cache infrastructure, contributed by Andrey
    Smirnov.
  - Several small improvements to the support for wake capable IRQs.
  - Support for asynchronous I/O, allowing us to come much closer to
    saturating fast buses like SPI.
  - Support for simple array caches, giving higher performance for use
    with MMIO devices.
  - Restoration of the use of bulk reads for handling interrupts, giving
    a performance improvement.
  - Support for 24 bit register addresses.
  - More performance improvements for debugfs.
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Merge tag 'regmap-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "Several nice new features and performance improvements here,
  especially the first:

   - Support for using the cache infrastructure without the physical
     I/O, allowing devices which don't fit the physical model regmap has
     to take advantage of the cache infrastructure, contributed by
     Andrey Smirnov.

   - Several small improvements to the support for wake capable IRQs.

   - Support for asynchronous I/O, allowing us to come much closer to
     saturating fast buses like SPI.

   - Support for simple array caches, giving higher performance for use
     with MMIO devices.

   - Restoration of the use of bulk reads for handling interrupts,
     giving a performance improvement.

   - Support for 24 bit register addresses.

   - More performance improvements for debugfs."

* tag 'regmap-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (24 commits)
  regmap: mmio: add register clock support
  regmap: debugfs: Factor out debugfs_tot_len calc into a function
  regmap: debugfs: Optimize seeking within blocks of registers
  regmap: debugfs: Add a `max_reg' member in struct regmap_debugfs_off_cache
  regmap: debugfs: Fix reading in register field units
  regmap: spi: Handle allocation failures gracefully
  regmap: Export regmap_async_complete()
  regmap: Export regmap_async_complete_cb
  regmap: include linux/sched.h to fix build
  regmap: spi: Support asynchronous I/O for SPI
  regmap: Add asynchronous I/O support
  regmap: Add "no-bus" option for regmap API
  regmap: regmap: avoid spurious warning in regmap_read_debugfs
  regmap: Add provisions to have user-defined write operation
  regmap: Add provisions to have user-defined read operation
  regmap: Add support for 24 bit wide register addresses
  mfd: wm5110: Mark wakes as inverted
  mfd: wm5102: Mark wakes as inverted
  regmap: irq: Support wake IRQ mask inversion
  regmap: irq: Fix sync of wake statuses to hardware
  ...
This commit is contained in:
Linus Torvalds 2013-02-20 09:20:55 -08:00
parent 9ae46e6702 a2b37efc4e
commit 88cff24159
12 changed files with 737 additions and 118 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/base/regmap/Makefile
View file

@ -1,5 +1,5 @@
obj-$(CONFIG_REGMAP) += regmap.o regcache.o
obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o
obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o regcache-flat.o
obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o

22
drivers/base/regmap/internal.h
View file

@ -16,6 +16,7 @@
#include <linux/regmap.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/wait.h>
struct regmap;
struct regcache_ops;
@ -25,6 +26,7 @@ struct regmap_debugfs_off_cache {
off_t min;
off_t max;
unsigned int base_reg;
unsigned int max_reg;
};
struct regmap_format {
@ -39,6 +41,13 @@ struct regmap_format {
unsigned int (*parse_val)(void *buf);
};
struct regmap_async {
struct list_head list;
struct work_struct cleanup;
struct regmap *map;
void *work_buf;
};
struct regmap {
struct mutex mutex;
spinlock_t spinlock;
@ -53,6 +62,11 @@ struct regmap {
void *bus_context;
const char *name;
spinlock_t async_lock;
wait_queue_head_t async_waitq;
struct list_head async_list;
int async_ret;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs;
const char *debugfs_name;
@ -74,6 +88,11 @@ struct regmap {
const struct regmap_access_table *volatile_table;
const struct regmap_access_table *precious_table;
int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
int (*reg_write)(void *context, unsigned int reg, unsigned int val);
bool defer_caching;
u8 read_flag_mask;
u8 write_flag_mask;
@ -175,7 +194,10 @@ 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);
void regmap_async_complete_cb(struct regmap_async *async, int ret);
extern struct regcache_ops regcache_rbtree_ops;
extern struct regcache_ops regcache_lzo_ops;
extern struct regcache_ops regcache_flat_ops;
#endif

72
drivers/base/regmap/regcache-flat.c Normal file
View file

@ -0,0 +1,72 @@
/*
* Register cache access API - flat caching support
*
* Copyright 2012 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/slab.h>
#include <linux/device.h>
#include <linux/seq_file.h>
#include "internal.h"
static int regcache_flat_init(struct regmap *map)
{
int i;
unsigned int *cache;
map->cache = kzalloc(sizeof(unsigned int) * (map->max_register + 1),
GFP_KERNEL);
if (!map->cache)
return -ENOMEM;
cache = map->cache;
for (i = 0; i < map->num_reg_defaults; i++)
cache[map->reg_defaults[i].reg] = map->reg_defaults[i].def;
return 0;
}
static int regcache_flat_exit(struct regmap *map)
{
kfree(map->cache);
map->cache = NULL;
return 0;
}
static int regcache_flat_read(struct regmap *map,
unsigned int reg, unsigned int *value)
{
unsigned int *cache = map->cache;
*value = cache[reg];
return 0;
}
static int regcache_flat_write(struct regmap *map, unsigned int reg,
unsigned int value)
{
unsigned int *cache = map->cache;
cache[reg] = value;
return 0;
}
struct regcache_ops regcache_flat_ops = {
.type = REGCACHE_FLAT,
.name = "flat",
.init = regcache_flat_init,
.exit = regcache_flat_exit,
.read = regcache_flat_read,
.write = regcache_flat_write,
};

1
drivers/base/regmap/regcache.c
View file

@ -22,6 +22,7 @@
static const struct regcache_ops *cache_types[] = {
&regcache_rbtree_ops,
&regcache_lzo_ops,
&regcache_flat_ops,
};
static int regcache_hw_init(struct regmap *map)

50
drivers/base/regmap/regmap-debugfs.c
View file

@ -81,6 +81,8 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
struct regmap_debugfs_off_cache *c = NULL;
loff_t p = 0;
unsigned int i, ret;
unsigned int fpos_offset;
unsigned int reg_offset;
/*
* If we don't have a cache build one so we don't have to do a
@ -93,6 +95,9 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
regmap_precious(map, i)) {
if (c) {
c->max = p - 1;
fpos_offset = c->max - c->min;
reg_offset = fpos_offset / map->debugfs_tot_len;
c->max_reg = c->base_reg + reg_offset;
list_add_tail(&c->list,
&map->debugfs_off_cache);
c = NULL;
@ -119,6 +124,9 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
/* Close the last entry off if we didn't scan beyond it */
if (c) {
c->max = p - 1;
fpos_offset = c->max - c->min;
reg_offset = fpos_offset / map->debugfs_tot_len;
c->max_reg = c->base_reg + reg_offset;
list_add_tail(&c->list,
&map->debugfs_off_cache);
}
@ -128,25 +136,38 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
* allocate and we should never be in this code if there are
* no registers at all.
*/
if (list_empty(&map->debugfs_off_cache)) {
WARN_ON(list_empty(&map->debugfs_off_cache));
return base;
}
WARN_ON(list_empty(&map->debugfs_off_cache));
ret = base;
/* Find the relevant block */
/* Find the relevant block:offset */
list_for_each_entry(c, &map->debugfs_off_cache, list) {
if (from >= c->min && from <= c->max) {
*pos = c->min;
return c->base_reg;
fpos_offset = from - c->min;
reg_offset = fpos_offset / map->debugfs_tot_len;
*pos = c->min + (reg_offset * map->debugfs_tot_len);
return c->base_reg + reg_offset;
}
*pos = c->min;
ret = c->base_reg;
*pos = c->max;
ret = c->max_reg;
}
return ret;
}
static inline void regmap_calc_tot_len(struct regmap *map,
void *buf, size_t count)
{
/* Calculate the length of a fixed format */
if (!map->debugfs_tot_len) {
map->debugfs_reg_len = regmap_calc_reg_len(map->max_register,
buf, count);
map->debugfs_val_len = 2 * map->format.val_bytes;
map->debugfs_tot_len = map->debugfs_reg_len +
map->debugfs_val_len + 3; /* : \n */
}
}
static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
unsigned int to, char __user *user_buf,
size_t count, loff_t *ppos)
@ -165,14 +186,7 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
if (!buf)
return -ENOMEM;
/* Calculate the length of a fixed format */
if (!map->debugfs_tot_len) {
map->debugfs_reg_len = regmap_calc_reg_len(map->max_register,
buf, count);
map->debugfs_val_len = 2 * map->format.val_bytes;
map->debugfs_tot_len = map->debugfs_reg_len +
map->debugfs_val_len + 3; /* : \n */
}
regmap_calc_tot_len(map, buf, count);
/* Work out which register we're starting at */
start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p);
@ -187,7 +201,7 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
/* If we're in the region the user is trying to read */
if (p >= *ppos) {
/* ...but not beyond it */
if (buf_pos + 1 + map->debugfs_tot_len >= count)
if (buf_pos + map->debugfs_tot_len > count)
break;
/* Format the register */

125
drivers/base/regmap/regmap-irq.c
View file

@ -34,6 +34,7 @@ struct regmap_irq_chip_data {
int irq;
int wake_count;
void *status_reg_buf;
unsigned int *status_buf;
unsigned int *mask_buf;
unsigned int *mask_buf_def;
@ -87,6 +88,23 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
if (ret != 0)
dev_err(d->map->dev, "Failed to sync masks in %x\n",
reg);
reg = d->chip->wake_base +
(i * map->reg_stride * d->irq_reg_stride);
if (d->wake_buf) {
if (d->chip->wake_invert)
ret = regmap_update_bits(d->map, reg,
d->mask_buf_def[i],
~d->wake_buf[i]);
else
ret = regmap_update_bits(d->map, reg,
d->mask_buf_def[i],
d->wake_buf[i]);
if (ret != 0)
dev_err(d->map->dev,
"Failed to sync wakes in %x: %d\n",
reg, ret);
}
}
if (d->chip->runtime_pm)
@ -129,16 +147,15 @@ static int regmap_irq_set_wake(struct irq_data *data, unsigned int on)
struct regmap *map = d->map;
const struct regmap_irq *irq_data = irq_to_regmap_irq(d, data->hwirq);
if (!d->chip->wake_base)
return -EINVAL;
if (on) {
d->wake_buf[irq_data->reg_offset / map->reg_stride]
&= ~irq_data->mask;
if (d->wake_buf)
d->wake_buf[irq_data->reg_offset / map->reg_stride]
&= ~irq_data->mask;
d->wake_count++;
} else {
d->wake_buf[irq_data->reg_offset / map->reg_stride]
|= irq_data->mask;
if (d->wake_buf)
d->wake_buf[irq_data->reg_offset / map->reg_stride]
|= irq_data->mask;
d->wake_count--;
}
@ -171,6 +188,62 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
}
}
/*
* Read in the statuses, using a single bulk read if possible
* in order to reduce the I/O overheads.
*/
if (!map->use_single_rw && map->reg_stride == 1 &&
data->irq_reg_stride == 1) {
u8 *buf8 = data->status_reg_buf;
u16 *buf16 = data->status_reg_buf;
u32 *buf32 = data->status_reg_buf;
BUG_ON(!data->status_reg_buf);
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;
}
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;
}
}
} else {
for (i = 0; i < data->chip->num_regs; i++) {
ret = regmap_read(map, chip->status_base +
(i * map->reg_stride
* data->irq_reg_stride),
&data->status_buf[i]);
if (ret != 0) {
dev_err(map->dev,
"Failed to read IRQ status: %d\n",
ret);
if (chip->runtime_pm)
pm_runtime_put(map->dev);
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
@ -179,18 +252,6 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
* doing a write per register.
*/
for (i = 0; i < data->chip->num_regs; i++) {
ret = regmap_read(map, chip->status_base + (i * map->reg_stride
* data->irq_reg_stride),
&data->status_buf[i]);
if (ret != 0) {
dev_err(map->dev, "Failed to read IRQ status: %d\n",
ret);
if (chip->runtime_pm)
pm_runtime_put(map->dev);
return IRQ_NONE;
}
data->status_buf[i] &= ~data->mask_buf[i];
if (data->status_buf[i] && chip->ack_base) {
@ -316,11 +377,6 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
d->irq_chip = regmap_irq_chip;
d->irq_chip.name = chip->name;
if (!chip->wake_base) {
d->irq_chip.irq_set_wake = NULL;
d->irq_chip.flags |= IRQCHIP_MASK_ON_SUSPEND |
IRQCHIP_SKIP_SET_WAKE;
}
d->irq = irq;
d->map = map;
d->chip = chip;
@ -331,6 +387,14 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
else
d->irq_reg_stride = 1;
if (!map->use_single_rw && map->reg_stride == 1 &&
d->irq_reg_stride == 1) {
d->status_reg_buf = kmalloc(map->format.val_bytes *
chip->num_regs, GFP_KERNEL);
if (!d->status_reg_buf)
goto err_alloc;
}
mutex_init(&d->lock);
for (i = 0; i < chip->num_irqs; i++)
@ -361,8 +425,15 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
d->wake_buf[i] = d->mask_buf_def[i];
reg = chip->wake_base +
(i * map->reg_stride * d->irq_reg_stride);
ret = regmap_update_bits(map, reg, d->wake_buf[i],
d->wake_buf[i]);
if (chip->wake_invert)
ret = regmap_update_bits(map, reg,
d->mask_buf_def[i],
0);
else
ret = regmap_update_bits(map, reg,
d->mask_buf_def[i],
d->wake_buf[i]);
if (ret != 0) {
dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
reg, ret);
@ -401,6 +472,7 @@ err_alloc:
kfree(d->mask_buf_def);
kfree(d->mask_buf);
kfree(d->status_buf);
kfree(d->status_reg_buf);
kfree(d);
return ret;
}
@ -422,6 +494,7 @@ void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *d)
kfree(d->wake_buf);
kfree(d->mask_buf_def);
kfree(d->mask_buf);
kfree(d->status_reg_buf);
kfree(d->status_buf);
kfree(d);
}

79
drivers/base/regmap/regmap-mmio.c
View file

@ -16,6 +16,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
@ -26,6 +27,7 @@
struct regmap_mmio_context {
void __iomem *regs;
unsigned val_bytes;
struct clk *clk;
};
static int regmap_mmio_gather_write(void *context,
@ -34,9 +36,16 @@ static int regmap_mmio_gather_write(void *context,
{
struct regmap_mmio_context *ctx = context;
u32 offset;
int ret;
BUG_ON(reg_size != 4);
if (ctx->clk) {
ret = clk_enable(ctx->clk);
if (ret < 0)
return ret;
}
offset = *(u32 *)reg;
while (val_size) {
@ -64,6 +73,9 @@ static int regmap_mmio_gather_write(void *context,
offset += ctx->val_bytes;
}
if (ctx->clk)
clk_disable(ctx->clk);
return 0;
}
@ -80,9 +92,16 @@ static int regmap_mmio_read(void *context,
{
struct regmap_mmio_context *ctx = context;
u32 offset;
int ret;
BUG_ON(reg_size != 4);
if (ctx->clk) {
ret = clk_enable(ctx->clk);
if (ret < 0)
return ret;
}
offset = *(u32 *)reg;
while (val_size) {
@ -110,11 +129,20 @@ static int regmap_mmio_read(void *context,
offset += ctx->val_bytes;
}
if (ctx->clk)
clk_disable(ctx->clk);
return 0;
}
static void regmap_mmio_free_context(void *context)
{
struct regmap_mmio_context *ctx = context;
if (ctx->clk) {
clk_unprepare(ctx->clk);
clk_put(ctx->clk);
}
kfree(context);
}
@ -128,11 +156,14 @@ static struct regmap_bus regmap_mmio = {
.val_format_endian_default = REGMAP_ENDIAN_NATIVE,
};
static struct regmap_mmio_context *regmap_mmio_gen_context(void __iomem *regs,
static struct regmap_mmio_context *regmap_mmio_gen_context(struct device *dev,
const char *clk_id,
void __iomem *regs,
const struct regmap_config *config)
{
struct regmap_mmio_context *ctx;
int min_stride;
int ret;
if (config->reg_bits != 32)
return ERR_PTR(-EINVAL);
@ -179,37 +210,59 @@ static struct regmap_mmio_context *regmap_mmio_gen_context(void __iomem *regs,
ctx->regs = regs;
ctx->val_bytes = config->val_bits / 8;
if (clk_id == NULL)
return ctx;
ctx->clk = clk_get(dev, clk_id);
if (IS_ERR(ctx->clk)) {
ret = PTR_ERR(ctx->clk);
goto err_free;
}
ret = clk_prepare(ctx->clk);
if (ret < 0) {
clk_put(ctx->clk);
goto err_free;
}
return ctx;
err_free:
kfree(ctx);
return ERR_PTR(ret);
}
/**
* regmap_init_mmio(): Initialise register map
* regmap_init_mmio_clk(): Initialise register map with register clock
*
* @dev: Device that will be interacted with
* @clk_id: register clock consumer ID
* @regs: Pointer to memory-mapped IO region
* @config: Configuration for register map
*
* The return value will be an ERR_PTR() on error or a valid pointer to
* a struct regmap.
*/
struct regmap *regmap_init_mmio(struct device *dev,
void __iomem *regs,
const struct regmap_config *config)
struct regmap *regmap_init_mmio_clk(struct device *dev, const char *clk_id,
void __iomem *regs,
const struct regmap_config *config)
{
struct regmap_mmio_context *ctx;
ctx = regmap_mmio_gen_context(regs, config);
ctx = regmap_mmio_gen_context(dev, clk_id, regs, config);
if (IS_ERR(ctx))
return ERR_CAST(ctx);
return regmap_init(dev, &regmap_mmio, ctx, config);
}
EXPORT_SYMBOL_GPL(regmap_init_mmio);
EXPORT_SYMBOL_GPL(regmap_init_mmio_clk);
/**
* devm_regmap_init_mmio(): Initialise managed register map
* devm_regmap_init_mmio_clk(): Initialise managed register map with clock
*
* @dev: Device that will be interacted with
* @clk_id: register clock consumer ID
* @regs: Pointer to memory-mapped IO region
* @config: Configuration for register map
*
@ -217,18 +270,18 @@ EXPORT_SYMBOL_GPL(regmap_init_mmio);
* to a struct regmap. The regmap will be automatically freed by the
* device management code.
*/
struct regmap *devm_regmap_init_mmio(struct device *dev,
void __iomem *regs,
const struct regmap_config *config)
struct regmap *devm_regmap_init_mmio_clk(struct device *dev, const char *clk_id,
void __iomem *regs,
const struct regmap_config *config)
{
struct regmap_mmio_context *ctx;
ctx = regmap_mmio_gen_context(regs, config);
ctx = regmap_mmio_gen_context(dev, clk_id, regs, config);
if (IS_ERR(ctx))
return ERR_CAST(ctx);
return devm_regmap_init(dev, &regmap_mmio, ctx, config);
}
EXPORT_SYMBOL_GPL(devm_regmap_init_mmio);
EXPORT_SYMBOL_GPL(devm_regmap_init_mmio_clk);
MODULE_LICENSE("GPL v2");

54
drivers/base/regmap/regmap-spi.c
View file

@ -15,6 +15,21 @@
#include <linux/init.h>
#include <linux/module.h>
#include "internal.h"
struct regmap_async_spi {
struct regmap_async core;
struct spi_message m;
struct spi_transfer t[2];
};
static void regmap_spi_complete(void *data)
{
struct regmap_async_spi *async = data;
regmap_async_complete_cb(&async->core, async->m.status);
}
static int regmap_spi_write(void *context, const void *data, size_t count)
{
struct device *dev = context;
@ -40,6 +55,43 @@ static int regmap_spi_gather_write(void *context,
return spi_sync(spi, &m);
}
static int regmap_spi_async_write(void *context,
const void *reg, size_t reg_len,
const void *val, size_t val_len,
struct regmap_async *a)
{
struct regmap_async_spi *async = container_of(a,
struct regmap_async_spi,
core);
struct device *dev = context;
struct spi_device *spi = to_spi_device(dev);
async->t[0].tx_buf = reg;
async->t[0].len = reg_len;
async->t[1].tx_buf = val;
async->t[1].len = val_len;
spi_message_init(&async->m);
spi_message_add_tail(&async->t[0], &async->m);
spi_message_add_tail(&async->t[1], &async->m);
async->m.complete = regmap_spi_complete;
async->m.context = async;
return spi_async(spi, &async->m);
}
static struct regmap_async *regmap_spi_async_alloc(void)
{
struct regmap_async_spi *async_spi;
async_spi = kzalloc(sizeof(*async_spi), GFP_KERNEL);
if (!async_spi)
return NULL;
return &async_spi->core;
}
static int regmap_spi_read(void *context,
const void *reg, size_t reg_size,
void *val, size_t val_size)
@ -53,6 +105,8 @@ static int regmap_spi_read(void *context,
static struct regmap_bus regmap_spi = {
.write = regmap_spi_write,
.gather_write = regmap_spi_gather_write,
.async_write = regmap_spi_async_write,
.async_alloc = regmap_spi_async_alloc,
.read = regmap_spi_read,
.read_flag_mask = 0x80,
};

351
drivers/base/regmap/regmap.c
View file

@ -16,6 +16,7 @@
#include <linux/mutex.h>
#include <linux/err.h>
#include <linux/rbtree.h>
#include <linux/sched.h>
#define CREATE_TRACE_POINTS
#include <trace/events/regmap.h>
@ -34,6 +35,22 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change);
static int _regmap_bus_read(void *context, unsigned int reg,
unsigned int *val);
static int _regmap_bus_formatted_write(void *context, unsigned int reg,
unsigned int val);
static int _regmap_bus_raw_write(void *context, unsigned int reg,
unsigned int val);
static void async_cleanup(struct work_struct *work)
{
struct regmap_async *async = container_of(work, struct regmap_async,
cleanup);
kfree(async->work_buf);
kfree(async);
}
bool regmap_reg_in_ranges(unsigned int reg,
const struct regmap_range *ranges,
unsigned int nranges)
@ -372,7 +389,7 @@ struct regmap *regmap_init(struct device *dev,
enum regmap_endian reg_endian, val_endian;
int i, j;
if (!bus || !config)
if (!config)
goto err;
map = kzalloc(sizeof(*map), GFP_KERNEL);
@ -386,7 +403,8 @@ struct regmap *regmap_init(struct device *dev,
map->unlock = config->unlock;
map->lock_arg = config->lock_arg;
} else {
if (bus->fast_io) {
if ((bus && bus->fast_io) ||
config->fast_io) {
spin_lock_init(&map->spinlock);
map->lock = regmap_lock_spinlock;
map->unlock = regmap_unlock_spinlock;
@ -423,13 +441,27 @@ struct regmap *regmap_init(struct device *dev,
map->cache_type = config->cache_type;
map->name = config->name;
spin_lock_init(&map->async_lock);
INIT_LIST_HEAD(&map->async_list);
init_waitqueue_head(&map->async_waitq);
if (config->read_flag_mask || config->write_flag_mask) {
map->read_flag_mask = config->read_flag_mask;
map->write_flag_mask = config->write_flag_mask;
} else {
} else if (bus) {
map->read_flag_mask = bus->read_flag_mask;
}
if (!bus) {
map->reg_read = config->reg_read;
map->reg_write = config->reg_write;
map->defer_caching = false;
goto skip_format_initialization;
} else {
map->reg_read = _regmap_bus_read;
}
reg_endian = config->reg_format_endian;
if (reg_endian == REGMAP_ENDIAN_DEFAULT)
reg_endian = bus->reg_format_endian_default;
@ -500,6 +532,12 @@ struct regmap *regmap_init(struct device *dev,
}
break;
case 24:
if (reg_endian != REGMAP_ENDIAN_BIG)
goto err_map;
map->format.format_reg = regmap_format_24;
break;
case 32:
switch (reg_endian) {
case REGMAP_ENDIAN_BIG:
@ -575,6 +613,16 @@ struct regmap *regmap_init(struct device *dev,
goto err_map;
}
if (map->format.format_write) {
map->defer_caching = false;
map->reg_write = _regmap_bus_formatted_write;
} else if (map->format.format_val) {
map->defer_caching = true;
map->reg_write = _regmap_bus_raw_write;
}
skip_format_initialization:
map->range_tree = RB_ROOT;
for (i = 0; i < config->num_ranges; i++) {
const struct regmap_range_cfg *range_cfg = &config->ranges[i];
@ -776,7 +824,7 @@ void regmap_exit(struct regmap *map)
regcache_exit(map);
regmap_debugfs_exit(map);
regmap_range_exit(map);
if (map->bus->free_context)
if (map->bus && map->bus->free_context)
map->bus->free_context(map->bus_context);
kfree(map->work_buf);
kfree(map);
@ -870,15 +918,20 @@ static int _regmap_select_page(struct regmap *map, unsigned int *reg,
}
static int _regmap_raw_write(struct regmap *map, unsigned int reg,
const void *val, size_t val_len)
const void *val, size_t val_len, bool async)
{
struct regmap_range_node *range;
unsigned long flags;
u8 *u8 = map->work_buf;
void *work_val = map->work_buf + map->format.reg_bytes +
map->format.pad_bytes;
void *buf;
int ret = -ENOTSUPP;
size_t len;
int i;
BUG_ON(!map->bus);
/* Check for unwritable registers before we start */
if (map->writeable_reg)
for (i = 0; i < val_len / map->format.val_bytes; i++)
@ -918,7 +971,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
dev_dbg(map->dev, "Writing window %d/%zu\n",
win_residue, val_len / map->format.val_bytes);
ret = _regmap_raw_write(map, reg, val, win_residue *
map->format.val_bytes);
map->format.val_bytes, async);
if (ret != 0)
return ret;
@ -941,6 +994,50 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
u8[0] |= map->write_flag_mask;
if (async && map->bus->async_write) {
struct regmap_async *async = map->bus->async_alloc();
if (!async)
return -ENOMEM;
async->work_buf = kzalloc(map->format.buf_size,
GFP_KERNEL | GFP_DMA);
if (!async->work_buf) {
kfree(async);
return -ENOMEM;
}
INIT_WORK(&async->cleanup, async_cleanup);
async->map = map;
/* If the caller supplied the value we can use it safely. */
memcpy(async->work_buf, map->work_buf, map->format.pad_bytes +
map->format.reg_bytes + map->format.val_bytes);
if (val == work_val)
val = async->work_buf + map->format.pad_bytes +
map->format.reg_bytes;
spin_lock_irqsave(&map->async_lock, flags);
list_add_tail(&async->list, &map->async_list);
spin_unlock_irqrestore(&map->async_lock, flags);
ret = map->bus->async_write(map->bus_context, async->work_buf,
map->format.reg_bytes +
map->format.pad_bytes,
val, val_len, async);
if (ret != 0) {
dev_err(map->dev, "Failed to schedule write: %d\n",
ret);
spin_lock_irqsave(&map->async_lock, flags);
list_del(&async->list);
spin_unlock_irqrestore(&map->async_lock, flags);
kfree(async->work_buf);
kfree(async);
}
}
trace_regmap_hw_write_start(map->dev, reg,
val_len / map->format.val_bytes);
@ -948,8 +1045,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
* send the work_buf directly, otherwise try to do a gather
* write.
*/
if (val == (map->work_buf + map->format.pad_bytes +
map->format.reg_bytes))
if (val == work_val)
ret = map->bus->write(map->bus_context, map->work_buf,
map->format.reg_bytes +
map->format.pad_bytes +
@ -981,14 +1077,62 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
return ret;
}
static int _regmap_bus_formatted_write(void *context, unsigned int reg,
unsigned int val)
{
int ret;
struct regmap_range_node *range;
struct regmap *map = context;
BUG_ON(!map->bus || !map->format.format_write);
range = _regmap_range_lookup(map, reg);
if (range) {
ret = _regmap_select_page(map, &reg, range, 1);
if (ret != 0)
return ret;
}
map->format.format_write(map, reg, val);
trace_regmap_hw_write_start(map->dev, reg, 1);
ret = map->bus->write(map->bus_context, map->work_buf,
map->format.buf_size);
trace_regmap_hw_write_done(map->dev, reg, 1);
return ret;
}
static int _regmap_bus_raw_write(void *context, unsigned int reg,
unsigned int val)
{
struct regmap *map = context;
BUG_ON(!map->bus || !map->format.format_val);
map->format.format_val(map->work_buf + map->format.reg_bytes
+ map->format.pad_bytes, val, 0);
return _regmap_raw_write(map, reg,
map->work_buf +
map->format.reg_bytes +
map->format.pad_bytes,
map->format.val_bytes, false);
}
static inline void *_regmap_map_get_context(struct regmap *map)
{
return (map->bus) ? map : map->bus_context;
}
int _regmap_write(struct regmap *map, unsigned int reg,
unsigned int val)
{
struct regmap_range_node *range;
int ret;
BUG_ON(!map->format.format_write && !map->format.format_val);
void *context = _regmap_map_get_context(map);
if (!map->cache_bypass && map->format.format_write) {
if (!map->cache_bypass && !map->defer_caching) {
ret = regcache_write(map, reg, val);
if (ret != 0)
return ret;
@ -1005,33 +1149,7 @@ int _regmap_write(struct regmap *map, unsigned int reg,
trace_regmap_reg_write(map->dev, reg, val);
if (map->format.format_write) {
range = _regmap_range_lookup(map, reg);
if (range) {
ret = _regmap_select_page(map, &reg, range, 1);
if (ret != 0)
return ret;
}
map->format.format_write(map, reg, val);
trace_regmap_hw_write_start(map->dev, reg, 1);
ret = map->bus->write(map->bus_context, map->work_buf,
map->format.buf_size);
trace_regmap_hw_write_done(map->dev, reg, 1);
return ret;
} else {
map->format.format_val(map->work_buf + map->format.reg_bytes
+ map->format.pad_bytes, val, 0);
return _regmap_raw_write(map, reg,
map->work_buf +
map->format.reg_bytes +
map->format.pad_bytes,
map->format.val_bytes);
}
return map->reg_write(context, reg, val);
}
/**
@ -1082,6 +1200,8 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
{
int ret;
if (!map->bus)
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
if (reg % map->reg_stride)
@ -1089,7 +1209,7 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
map->lock(map->lock_arg);
ret = _regmap_raw_write(map, reg, val, val_len);
ret = _regmap_raw_write(map, reg, val, val_len, false);
map->unlock(map->lock_arg);
@ -1118,6 +1238,8 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
size_t val_bytes = map->format.val_bytes;
void *wval;
if (!map->bus)
return -EINVAL;
if (!map->format.parse_val)
return -EINVAL;
if (reg % map->reg_stride)
@ -1145,14 +1267,15 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
if (map->use_single_rw) {
for (i = 0; i < val_count; i++) {
ret = regmap_raw_write(map,
reg + (i * map->reg_stride),
val + (i * val_bytes),
val_bytes);
reg + (i * map->reg_stride),
val + (i * val_bytes),
val_bytes);
if (ret != 0)
return ret;
}
} else {
ret = _regmap_raw_write(map, reg, wval, val_bytes * val_count);
ret = _regmap_raw_write(map, reg, wval, val_bytes * val_count,
false);
}
if (val_bytes != 1)
@ -1164,6 +1287,48 @@ out:
}
EXPORT_SYMBOL_GPL(regmap_bulk_write);
/**
* 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
* @val: Block of data to be written, laid out for direct transmission to the
* device. Must be valid until regmap_async_complete() is called.
* @val_len: Length of data pointed to by val.
*
* This function is intended to be used for things like firmware
* download where a large block of data needs to be transferred to the
* device. No formatting will be done on the data provided.
*
* If supported by the underlying bus the write will be scheduled
* asynchronously, helping maximise I/O speed on higher speed buses
* like SPI. regmap_async_complete() can be called to ensure that all
* asynchrnous writes have been completed.
*
* A value of zero will be returned on success, a negative errno will
* be returned in error cases.
*/
int regmap_raw_write_async(struct regmap *map, unsigned int reg,
const void *val, size_t val_len)
{
int ret;
if (val_len % map->format.val_bytes)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
map->lock(map->lock_arg);
ret = _regmap_raw_write(map, reg, val, val_len, true);
map->unlock(map->lock_arg);
return ret;
}
EXPORT_SYMBOL_GPL(regmap_raw_write_async);
static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
unsigned int val_len)
{
@ -1171,6 +1336,8 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
u8 *u8 = map->work_buf;
int ret;
BUG_ON(!map->bus);
range = _regmap_range_lookup(map, reg);
if (range) {
ret = _regmap_select_page(map, &reg, range,
@ -1202,10 +1369,29 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
return ret;
}
static int _regmap_bus_read(void *context, unsigned int reg,
unsigned int *val)
{
int ret;
struct regmap *map = context;
if (!map->format.parse_val)
return -EINVAL;
ret = _regmap_raw_read(map, reg, map->work_buf, map->format.val_bytes);
if (ret == 0)
*val = map->format.parse_val(map->work_buf);
return ret;
}
static int _regmap_read(struct regmap *map, unsigned int reg,
unsigned int *val)
{
int ret;
void *context = _regmap_map_get_context(map);
BUG_ON(!map->reg_read);
if (!map->cache_bypass) {
ret = regcache_read(map, reg, val);
@ -1213,26 +1399,21 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
return 0;
}
if (!map->format.parse_val)
return -EINVAL;
if (map->cache_only)
return -EBUSY;
ret = _regmap_raw_read(map, reg, map->work_buf, map->format.val_bytes);
ret = map->reg_read(context, reg, val);
if (ret == 0) {
*val = map->format.parse_val(map->work_buf);
#ifdef LOG_DEVICE
if (strcmp(dev_name(map->dev), LOG_DEVICE) == 0)
dev_info(map->dev, "%x => %x\n", reg, *val);
#endif
trace_regmap_reg_read(map->dev, reg, *val);
}
if (ret == 0 && !map->cache_bypass)
regcache_write(map, reg, *val);
if (!map->cache_bypass)
regcache_write(map, reg, *val);
}
return ret;
}
@ -1283,6 +1464,8 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
unsigned int v;
int ret, i;
if (!map->bus)
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
if (reg % map->reg_stride)
@ -1334,6 +1517,8 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
size_t val_bytes = map->format.val_bytes;
bool vol = regmap_volatile_range(map, reg, val_count);
if (!map->bus)
return -EINVAL;
if (!map->format.parse_val)
return -EINVAL;
if (reg % map->reg_stride)
@ -1450,6 +1635,68 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg,
}
EXPORT_SYMBOL_GPL(regmap_update_bits_check);
void regmap_async_complete_cb(struct regmap_async *async, int ret)
{
struct regmap *map = async->map;
bool wake;
spin_lock(&map->async_lock);
list_del(&async->list);
wake = list_empty(&map->async_list);
if (ret != 0)
map->async_ret = ret;
spin_unlock(&map->async_lock);
schedule_work(&async->cleanup);
if (wake)
wake_up(&map->async_waitq);
}
EXPORT_SYMBOL_GPL(regmap_async_complete_cb);
static int regmap_async_is_done(struct regmap *map)
{
unsigned long flags;
int ret;
spin_lock_irqsave(&map->async_lock, flags);
ret = list_empty(&map->async_list);
spin_unlock_irqrestore(&map->async_lock, flags);
return ret;
}
/**
* regmap_async_complete: Ensure all asynchronous I/O has completed.
*
* @map: Map to operate on.
*
* Blocks until any pending asynchronous I/O has completed. Returns
* an error code for any failed I/O operations.
*/
int regmap_async_complete(struct regmap *map)
{
unsigned long flags;
int ret;
/* Nothing to do with no async support */
if (!map->bus->async_write)
return 0;
wait_event(map->async_waitq, regmap_async_is_done(map));
spin_lock_irqsave(&map->async_lock, flags);
ret = map->async_ret;
map->async_ret = 0;
spin_unlock_irqrestore(&map->async_lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(regmap_async_complete);
/**
* regmap_register_patch: Register and apply register updates to be applied
* on device initialistion

1
drivers/mfd/wm5102-tables.c
View file

@ -96,6 +96,7 @@ const struct regmap_irq_chip wm5102_aod = {
.mask_base = ARIZONA_AOD_IRQ_MASK_IRQ1,
.ack_base = ARIZONA_AOD_IRQ1,
.wake_base = ARIZONA_WAKE_CONTROL,
.wake_invert = 1,
.num_regs = 1,
.irqs = wm5102_aod_irqs,
.num_irqs = ARRAY_SIZE(wm5102_aod_irqs),

1
drivers/mfd/wm5110-tables.c
View file

@ -255,6 +255,7 @@ const struct regmap_irq_chip wm5110_aod = {
.mask_base = ARIZONA_AOD_IRQ_MASK_IRQ1,
.ack_base = ARIZONA_AOD_IRQ1,
.wake_base = ARIZONA_WAKE_CONTROL,
.wake_invert = 1,
.num_regs = 1,
.irqs = wm5110_aod_irqs,
.num_irqs = ARRAY_SIZE(wm5110_aod_irqs),

97
include/linux/regmap.h
View file

@ -28,7 +28,8 @@ struct regmap_range_cfg;
enum regcache_type {
REGCACHE_NONE,
REGCACHE_RBTREE,
REGCACHE_COMPRESSED
REGCACHE_COMPRESSED,
REGCACHE_FLAT,
};
/**
@ -127,7 +128,18 @@ typedef void (*regmap_unlock)(void *);
* @lock_arg: this field is passed as the only argument of lock/unlock
* functions (ignored in case regular lock/unlock functions
* are not overridden).
*
* @reg_read: Optional callback that if filled will be used to perform
* all the reads from the registers. Should only be provided for
* devices whos read operation cannot be represented as a simple read
* operation on a bus such as SPI, I2C, etc. Most of the devices do
* not need this.
* @reg_write: Same as above for writing.
* @fast_io: Register IO is fast. Use a spinlock instead of a mutex
* to perform locking. This field is ignored if custom lock/unlock
* functions are used (see fields lock/unlock of struct regmap_config).
* This field is a duplicate of a similar file in
* 'struct regmap_bus' and serves exact same purpose.
* Use it only for "no-bus" cases.
* @max_register: Optional, specifies the maximum valid register index.
* @wr_table: Optional, points to a struct regmap_access_table specifying
* valid ranges for write access.
@ -177,6 +189,11 @@ struct regmap_config {
regmap_unlock unlock;
void *lock_arg;
int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
int (*reg_write)(void *context, unsigned int reg, unsigned int val);
bool fast_io;
unsigned int max_register;
const struct regmap_access_table *wr_table;
const struct regmap_access_table *rd_table;
@ -235,14 +252,21 @@ struct regmap_range_cfg {
unsigned int window_len;
};
struct regmap_async;
typedef int (*regmap_hw_write)(void *context, const void *data,
size_t count);
typedef int (*regmap_hw_gather_write)(void *context,
const void *reg, size_t reg_len,
const void *val, size_t val_len);
typedef int (*regmap_hw_async_write)(void *context,
const void *reg, size_t reg_len,
const void *val, size_t val_len,
struct regmap_async *async);
typedef int (*regmap_hw_read)(void *context,
const void *reg_buf, size_t reg_size,
void *val_buf, size_t val_size);
typedef struct regmap_async *(*regmap_hw_async_alloc)(void);
typedef void (*regmap_hw_free_context)(void *context);
/**
@ -255,8 +279,11 @@ typedef void (*regmap_hw_free_context)(void *context);
* @write: Write operation.
* @gather_write: Write operation with split register/value, return -ENOTSUPP
* if not implemented on a given device.
* @async_write: Write operation which completes asynchronously, optional and
* must serialise with respect to non-async I/O.
* @read: Read operation. Data is returned in the buffer used to transmit
* data.
* @async_alloc: Allocate a regmap_async() structure.
* @read_flag_mask: Mask to be set in the top byte of the register when doing
* a read.
* @reg_format_endian_default: Default endianness for formatted register
@ -265,13 +292,16 @@ typedef void (*regmap_hw_free_context)(void *context);
* @val_format_endian_default: Default endianness for formatted register
* values. Used when the regmap_config specifies DEFAULT. If this is
* DEFAULT, BIG is assumed.
* @async_size: Size of struct used for async work.
*/
struct regmap_bus {
bool fast_io;
regmap_hw_write write;
regmap_hw_gather_write gather_write;
regmap_hw_async_write async_write;
regmap_hw_read read;
regmap_hw_free_context free_context;
regmap_hw_async_alloc async_alloc;
u8 read_flag_mask;
enum regmap_endian reg_format_endian_default;
enum regmap_endian val_format_endian_default;
@ -285,9 +315,9 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c,
const struct regmap_config *config);
struct regmap *regmap_init_spi(struct spi_device *dev,
const struct regmap_config *config);
struct regmap *regmap_init_mmio(struct device *dev,
void __iomem *regs,
const struct regmap_config *config);
struct regmap *regmap_init_mmio_clk(struct device *dev, const char *clk_id,
void __iomem *regs,
const struct regmap_config *config);
struct regmap *devm_regmap_init(struct device *dev,
const struct regmap_bus *bus,
@ -297,9 +327,44 @@ struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
const struct regmap_config *config);
struct regmap *devm_regmap_init_spi(struct spi_device *dev,
const struct regmap_config *config);
struct regmap *devm_regmap_init_mmio(struct device *dev,
void __iomem *regs,
const struct regmap_config *config);
struct regmap *devm_regmap_init_mmio_clk(struct device *dev, const char *clk_id,
void __iomem *regs,
const struct regmap_config *config);
/**
* regmap_init_mmio(): Initialise register map
*
* @dev: Device that will be interacted with
* @regs: Pointer to memory-mapped IO region
* @config: Configuration for register map
*
* The return value will be an ERR_PTR() on error or a valid pointer to
* a struct regmap.
*/
static inline struct regmap *regmap_init_mmio(struct device *dev,
void __iomem *regs,
const struct regmap_config *config)
{
return regmap_init_mmio_clk(dev, NULL, regs, config);
}
/**
* devm_regmap_init_mmio(): Initialise managed register map
*
* @dev: Device that will be interacted with
* @regs: Pointer to memory-mapped IO region
* @config: Configuration for register map
*
* The return value will be an ERR_PTR() on error or a valid pointer
* to a struct regmap. The regmap will be automatically freed by the
* device management code.
*/
static inline struct regmap *devm_regmap_init_mmio(struct device *dev,
void __iomem *regs,
const struct regmap_config *config)
{
return devm_regmap_init_mmio_clk(dev, NULL, regs, config);
}
void regmap_exit(struct regmap *map);
int regmap_reinit_cache(struct regmap *map,
@ -310,6 +375,8 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
const void *val, size_t val_len);
int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
size_t val_count);
int regmap_raw_write_async(struct regmap *map, unsigned int reg,
const void *val, size_t val_len);
int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val);
int regmap_raw_read(struct regmap *map, unsigned int reg,
void *val, size_t val_len);
@ -321,6 +388,7 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change);
int regmap_get_val_bytes(struct regmap *map);
int regmap_async_complete(struct regmap *map);
int regcache_sync(struct regmap *map);
int regcache_sync_region(struct regmap *map, unsigned int min,
@ -381,6 +449,7 @@ struct regmap_irq_chip {
unsigned int wake_base;
unsigned int irq_reg_stride;
unsigned int mask_invert;
unsigned int wake_invert;
bool runtime_pm;
int num_regs;
@ -422,6 +491,13 @@ static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
return -EINVAL;
}
static inline int regmap_raw_write_async(struct regmap *map, unsigned int reg,
const void *val, size_t val_len)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
const void *val, size_t val_count)
{
@ -500,6 +576,11 @@ static inline void regcache_mark_dirty(struct regmap *map)
WARN_ONCE(1, "regmap API is disabled");
}
static inline void regmap_async_complete(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");
}
static inline int regmap_register_patch(struct regmap *map,
const struct reg_default *regs,
int num_regs)