diff options
| author | Mark Brown <broonie@linaro.org> | 2013-08-31 17:48:19 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-09-02 10:30:14 +0200 |
| commit | c6f39257c952bc7da974bf93255936ff2ece2c34 (patch) | |
| tree | 934b363a903dc4a80248b260d319b6f20992597d /drivers/mfd | |
| parent | 921a2c870faa0a88c34e5c8c2afbd898fe8d325d (diff) | |
| download | linux-c6f39257c952bc7da974bf93255936ff2ece2c34.tar.bz2 | |
mfd: twl6040: Use regmap for register cache
Rather then open coding a cache of the vibra control registers use the
regmap cache code. Also cache the interrupt mask register, providing
a small performance improvement for the interrupt code.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/twl6040.c | 43 |
1 files changed, 30 insertions, 13 deletions
diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c index 492ee2cd3400..c7df66a208d4 100644 --- a/drivers/mfd/twl6040.c +++ b/drivers/mfd/twl6040.c @@ -63,15 +63,9 @@ int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) int ret; unsigned int val; - /* Vibra control registers from cache */ - if (unlikely(reg == TWL6040_REG_VIBCTLL || - reg == TWL6040_REG_VIBCTLR)) { - val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; - } else { - ret = regmap_read(twl6040->regmap, reg, &val); - if (ret < 0) - return ret; - } + ret = regmap_read(twl6040->regmap, reg, &val); + if (ret < 0) + return ret; return val; } @@ -82,9 +76,6 @@ int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) int ret; ret = regmap_write(twl6040->regmap, reg, val); - /* Cache the vibra control registers */ - if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) - twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; return ret; } @@ -461,9 +452,20 @@ EXPORT_SYMBOL(twl6040_get_sysclk); /* Get the combined status of the vibra control register */ int twl6040_get_vibralr_status(struct twl6040 *twl6040) { + unsigned int reg; + int ret; u8 status; - status = twl6040->vibra_ctrl_cache[0] | twl6040->vibra_ctrl_cache[1]; + ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLL, ®); + if (ret != 0) + return ret; + status = reg; + + ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLR, ®); + if (ret != 0) + return ret; + status |= reg; + status &= (TWL6040_VIBENA | TWL6040_VIBSEL); return status; @@ -490,12 +492,27 @@ static bool twl6040_readable_reg(struct device *dev, unsigned int reg) return true; } +static bool twl6040_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TWL6040_REG_VIBCTLL: + case TWL6040_REG_VIBCTLR: + case TWL6040_REG_INTMR: + return false; + default: + return true; + } +} + static struct regmap_config twl6040_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = TWL6040_REG_STATUS, /* 0x2e */ .readable_reg = twl6040_readable_reg, + .volatile_reg = twl6040_volatile_reg, + + .cache_type = REGCACHE_RBTREE, }; static const struct regmap_irq twl6040_irqs[] = { |