AcoSail/kernel_optimize_test
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Merge remote-tracking branches 'regmap/topic/debugfs' and 'regmap/topic/mmio-clk' into regmap-next

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This commit is contained in:
Mark Brown 2018-03-12 09:50:42 -07:00
commit 2889312616
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GPG Key ID: 24D68B725D5487D0
4 changed files with 47 additions and 2 deletions
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20
drivers/base/regmap/regmap-debugfs.c
View File

@ -25,6 +25,7 @@ struct regmap_debugfs_node {
struct list_head link;
};
static unsigned int dummy_index;
static struct dentry *regmap_debugfs_root;
static LIST_HEAD(regmap_debugfs_early_list);
static DEFINE_MUTEX(regmap_debugfs_early_lock);
@ -40,6 +41,7 @@ static ssize_t regmap_name_read_file(struct file *file,
loff_t *ppos)
{
struct regmap *map = file->private_data;
const char *name = "nodev";
int ret;
char *buf;
@ -47,7 +49,10 @@ static ssize_t regmap_name_read_file(struct file *file,
if (!buf)
return -ENOMEM;
ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name);
if (map->dev && map->dev->driver)
name = map->dev->driver->name;
ret = snprintf(buf, PAGE_SIZE, "%s\n", name);
if (ret < 0) {
kfree(buf);
return ret;
@ -569,9 +574,20 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
name = devname;
}
if (!strcmp(name, "dummy")) {
map->debugfs_name = kasprintf(GFP_KERNEL, "dummy%d",
dummy_index);
name = map->debugfs_name;
dummy_index++;
}
map->debugfs = debugfs_create_dir(name, regmap_debugfs_root);
if (!map->debugfs) {
dev_warn(map->dev, "Failed to create debugfs directory\n");
dev_warn(map->dev,
"Failed to create %s debugfs directory\n", name);
kfree(map->debugfs_name);
map->debugfs_name = NULL;
return;
}

24
drivers/base/regmap/regmap-mmio.c
View File

@ -28,6 +28,8 @@
struct regmap_mmio_context {
void __iomem *regs;
unsigned val_bytes;
bool attached_clk;
struct clk *clk;
void (*reg_write)(struct regmap_mmio_context *ctx,
@ -363,4 +365,26 @@ struct regmap *__devm_regmap_init_mmio_clk(struct device *dev,
}
EXPORT_SYMBOL_GPL(__devm_regmap_init_mmio_clk);
int regmap_mmio_attach_clk(struct regmap *map, struct clk *clk)
{
struct regmap_mmio_context *ctx = map->bus_context;
ctx->clk = clk;
ctx->attached_clk = true;
return clk_prepare(ctx->clk);
}
EXPORT_SYMBOL_GPL(regmap_mmio_attach_clk);
void regmap_mmio_detach_clk(struct regmap *map)
{
struct regmap_mmio_context *ctx = map->bus_context;
clk_unprepare(ctx->clk);
ctx->attached_clk = false;
ctx->clk = NULL;
}
EXPORT_SYMBOL_GPL(regmap_mmio_detach_clk);
MODULE_LICENSE("GPL v2");

2
drivers/base/regmap/regmap.c
View File

@ -1116,6 +1116,8 @@ struct regmap *__regmap_init(struct device *dev,
ret = regmap_attach_dev(dev, map, config);
if (ret != 0)
goto err_regcache;
} else {
regmap_debugfs_init(map, config->name);
}
return map;

3
include/linux/regmap.h
View File

@ -21,6 +21,7 @@
#include <linux/lockdep.h>
struct module;
struct clk;
struct device;
struct i2c_client;
struct irq_domain;
@ -905,6 +906,8 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
__regmap_lockdep_wrapper(__devm_regmap_init_sdw, #config, \
sdw, config)
int regmap_mmio_attach_clk(struct regmap *map, struct clk *clk);
void regmap_mmio_detach_clk(struct regmap *map);
void regmap_exit(struct regmap *map);
int regmap_reinit_cache(struct regmap *map,
const struct regmap_config *config);