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| author | Mark Brown <broonie@linaro.org> | 2013-07-02 18:51:16 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-07-31 02:02:55 +0200 |
| commit | 6b845ba934cc425e43615032a2f046709b95a76c (patch) | |
| tree | 9b0f1de0c093c9e500a0e432fa45f169b4809cbc | |
| parent | 1d057b853962a84a2c41a0a0a7fc15a631ac96e8 (diff) | |
| download | talos-obmc-linux-6b845ba934cc425e43615032a2f046709b95a76c.tar.gz talos-obmc-linux-6b845ba934cc425e43615032a2f046709b95a76c.zip | |
mfd: sec: Add register cache for interrupt mask registers
The performance of regmap-irq is improved if the interrupt mask registers
can be cached since it does read/modify/update cycles so start using the
register cache infrastructure for those registers. We should use this more
widely but I don't have a datasheet and this is a nice, conservative
starting point.
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/sec-core.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c index e4930018005e..79c07502db52 100644 --- a/drivers/mfd/sec-core.c +++ b/drivers/mfd/sec-core.c @@ -106,6 +106,31 @@ int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask) } EXPORT_SYMBOL_GPL(sec_reg_update); +static bool s2mps11_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case S2MPS11_REG_INT1M: + case S2MPS11_REG_INT2M: + case S2MPS11_REG_INT3M: + return false; + default: + return true; + } +} + +static bool s5m8763_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case S5M8763_REG_IRQM1: + case S5M8763_REG_IRQM2: + case S5M8763_REG_IRQM3: + case S5M8763_REG_IRQM4: + return false; + default: + return true; + } +} + static struct regmap_config sec_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -116,6 +141,8 @@ static struct regmap_config s2mps11_regmap_config = { .val_bits = 8, .max_register = S2MPS11_REG_L38CTRL, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, }; static struct regmap_config s5m8763_regmap_config = { @@ -123,6 +150,8 @@ static struct regmap_config s5m8763_regmap_config = { .val_bits = 8, .max_register = S5M8763_REG_LBCNFG2, + .volatile_reg = s5m8763_volatile, + .cache_type = REGCACHE_FLAT, }; static struct regmap_config s5m8767_regmap_config = { @@ -130,6 +159,8 @@ static struct regmap_config s5m8767_regmap_config = { .val_bits = 8, .max_register = S5M8767_REG_LDO28CTRL, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, }; #ifdef CONFIG_OF |
