[1/2] regmap: add regmap_might_sleep()
Commit Message
With the dawn of MMIO gpio-regmap users, it is desirable to let
gpio-regmap ask the regmap if it might sleep during an access so
it can pass that information to gpiochip. Add a new regmap_might_sleep()
to query the regmap.
Signed-off-by: Michael Walle <michael@walle.cc>
---
drivers/base/regmap/regmap.c | 13 +++++++++++++
include/linux/regmap.h | 7 +++++++
2 files changed, 20 insertions(+)
Comments
On Mon, 21 Nov 2022 16:08:42 +0100, Michael Walle wrote:
> With the dawn of MMIO gpio-regmap users, it is desirable to let
> gpio-regmap ask the regmap if it might sleep during an access so
> it can pass that information to gpiochip. Add a new regmap_might_sleep()
> to query the regmap.
>
>
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git for-next
Thanks!
[1/2] regmap: add regmap_might_sleep()
commit: a6d99022e56e8c1ddc4c75895ed9e3ce5da88453
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
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Thanks,
Mark
On Mon, Nov 21, 2022 at 04:08:42PM +0100, Michael Walle wrote:
> With the dawn of MMIO gpio-regmap users, it is desirable to let
> gpio-regmap ask the regmap if it might sleep during an access so
> it can pass that information to gpiochip. Add a new regmap_might_sleep()
> to query the regmap.
The following changes since commit 9abf2313adc1ca1b6180c508c25f22f9395cc780:
Linux 6.1-rc1 (2022-10-16 15:36:24 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git tags/regmap-might-sleep
for you to fetch changes up to a6d99022e56e8c1ddc4c75895ed9e3ce5da88453:
regmap: add regmap_might_sleep() (2022-11-22 12:23:17 +0000)
----------------------------------------------------------------
regmap: Add regmap_might_sleep()
Add an interface allowing generic users to determine if a regmap might
use sleeping operations.
----------------------------------------------------------------
Michael Walle (1):
regmap: add regmap_might_sleep()
drivers/base/regmap/regmap.c | 13 +++++++++++++
include/linux/regmap.h | 7 +++++++
2 files changed, 20 insertions(+)
@@ -3486,6 +3486,19 @@ int regmap_get_reg_stride(struct regmap *map)
}
EXPORT_SYMBOL_GPL(regmap_get_reg_stride);
+/**
+ * regmap_might_sleep() - Returns whether a regmap access might sleep.
+ *
+ * @map: Register map to operate on.
+ *
+ * Returns true if an access to the register might sleep, else false.
+ */
+bool regmap_might_sleep(struct regmap *map)
+{
+ return map->can_sleep;
+}
+EXPORT_SYMBOL_GPL(regmap_might_sleep);
+
int regmap_parse_val(struct regmap *map, const void *buf,
unsigned int *val)
{
@@ -1219,6 +1219,7 @@ static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
int regmap_get_val_bytes(struct regmap *map);
int regmap_get_max_register(struct regmap *map);
int regmap_get_reg_stride(struct regmap *map);
+bool regmap_might_sleep(struct regmap *map);
int regmap_async_complete(struct regmap *map);
bool regmap_can_raw_write(struct regmap *map);
size_t regmap_get_raw_read_max(struct regmap *map);
@@ -1905,6 +1906,12 @@ static inline int regmap_get_reg_stride(struct regmap *map)
return -EINVAL;
}
+static inline bool regmap_might_sleep(struct regmap *map)
+{
+ WARN_ONCE(1, "regmap API is disabled");
+ return true;
+}
+
static inline int regcache_sync(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");