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regmap: MMIO regmap clock configuration

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This patch provides a mechanism for specifying a different clock to be
 used with the regmap clock integration.
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Merge tag 'mmio-clk-config' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into drm-misc-next

regmap: MMIO regmap clock configuration

This patch provides a mechanism for specifying a different clock to be
used with the regmap clock integration.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180226131207.GB6681@sirena.org.uk
This commit is contained in:
Maarten Lankhorst 2018-04-11 12:35:41 +02:00
commit 1d0397d602
2 changed files with 27 additions and 0 deletions
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24
drivers/base/regmap/regmap-mmio.c
View File

@ -28,6 +28,8 @@
struct regmap_mmio_context { struct regmap_mmio_context {
void __iomem *regs; void __iomem *regs;
unsigned val_bytes; unsigned val_bytes;
bool attached_clk;
struct clk *clk; struct clk *clk;
void (*reg_write)(struct regmap_mmio_context *ctx, 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); 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"); MODULE_LICENSE("GPL v2");

3
include/linux/regmap.h
View File

@ -21,6 +21,7 @@
#include <linux/lockdep.h> #include <linux/lockdep.h>
struct module; struct module;
struct clk;
struct device; struct device;
struct i2c_client; struct i2c_client;
struct irq_domain; 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, \ __regmap_lockdep_wrapper(__devm_regmap_init_sdw, #config, \
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); void regmap_exit(struct regmap *map);
int regmap_reinit_cache(struct regmap *map, int regmap_reinit_cache(struct regmap *map,
const struct regmap_config *config); const struct regmap_config *config);