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Merge series "regmap: provide simple bitops and use them in a driver" from Bartosz Golaszewski <brgl@bgdev.pl>

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Bartosz Golaszewski <bgolaszewski@baylibre.com>:

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

I noticed that oftentimes I use regmap_update_bits() for simple bit
setting or clearing. In this case the fourth argument is superfluous as
it's always 0 or equal to the mask argument.

This series proposes to add simple bit operations for setting, clearing
and testing specific bits with regmap.

The second patch uses all three in a driver that got recently picked into
the net-next tree.

The patches obviously target different trees so - if you're ok with
the change itself - I propose you pick the first one into your regmap
tree for v5.8 and then I'll resend the second patch to add the first
user for these macros for v5.9.

v1 -> v2:
- convert the new macros to static inline functions

v2 -> v3:
- drop unneeded ternary operator

Bartosz Golaszewski (2):
  regmap: provide helpers for simple bit operations
  net: ethernet: mtk-star-emac: use regmap bitops

 drivers/base/regmap/regmap.c                  | 22 +++++
 drivers/net/ethernet/mediatek/mtk_star_emac.c | 80 ++++++++-----------
 include/linux/regmap.h                        | 36 +++++++++
 3 files changed, 93 insertions(+), 45 deletions(-)

base-commit: 8f3d9f3542

--
2.26.1

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This commit is contained in:
Mark Brown 2020-05-29 14:00:44 +01:00
commit 93b929922d
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36
include/linux/regmap.h
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@ -1089,6 +1089,21 @@ bool regmap_reg_in_ranges(unsigned int reg,
const struct regmap_range *ranges,
unsigned int nranges);
static inline int regmap_set_bits(struct regmap *map,
unsigned int reg, unsigned int bits)
{
return regmap_update_bits_base(map, reg, bits, bits,
NULL, false, false);
}
static inline int regmap_clear_bits(struct regmap *map,
unsigned int reg, unsigned int bits)
{
return regmap_update_bits_base(map, reg, bits, 0, NULL, false, false);
}
int regmap_test_bits(struct regmap *map, unsigned int reg, unsigned int bits);
/**
* struct reg_field - Description of an register field
*
@ -1405,6 +1420,27 @@ static inline int regmap_update_bits_base(struct regmap *map, unsigned int reg,
return -EINVAL;
}
static inline int regmap_set_bits(struct regmap *map,
unsigned int reg, unsigned int bits)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_clear_bits(struct regmap *map,
unsigned int reg, unsigned int bits)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_test_bits(struct regmap *map,
unsigned int reg, unsigned int bits)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_field_update_bits_base(struct regmap_field *field,
unsigned int mask, unsigned int val,
bool *change, bool async, bool force)