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mfd: tps65090: Stop caching most registers

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Nearly all of the registers in tps65090 combine control bits and
status bits.  Turn off caching of all registers except the select few
that can be cached.

In order to avoid adding more duplicate #defines, we also move some
register offset definitions to the mfd driver (and resolve
inconsistent names).

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Doug Anderson 2014-04-16 16:12:27 -07:00 committed by Lee Jones
parent 7d811771c9
commit c42ba72ec3
3 changed files with 28 additions and 24 deletions
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27
drivers/mfd/tps65090.c
View File

@ -32,14 +32,6 @@
#define NUM_INT_REG 2
#define TOTAL_NUM_REG 0x18
/* interrupt status registers */
#define TPS65090_INT_STS 0x0
#define TPS65090_INT_STS2 0x1
/* interrupt mask registers */
#define TPS65090_INT_MSK 0x2
#define TPS65090_INT_MSK2 0x3
#define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
#define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
#define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
@ -144,17 +136,26 @@ static struct regmap_irq_chip tps65090_irq_chip = {
.irqs = tps65090_irqs,
.num_irqs = ARRAY_SIZE(tps65090_irqs),
.num_regs = NUM_INT_REG,
.status_base = TPS65090_INT_STS,
.mask_base = TPS65090_INT_MSK,
.status_base = TPS65090_REG_INTR_STS,
.mask_base = TPS65090_REG_INTR_MASK,
.mask_invert = true,
};
static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2))
return true;
else
/* Nearly all registers have status bits mixed in, except a few */
switch (reg) {
case TPS65090_REG_INTR_MASK:
case TPS65090_REG_INTR_MASK2:
case TPS65090_REG_CG_CTRL0:
case TPS65090_REG_CG_CTRL1:
case TPS65090_REG_CG_CTRL2:
case TPS65090_REG_CG_CTRL3:
case TPS65090_REG_CG_CTRL4:
case TPS65090_REG_CG_CTRL5:
return false;
}
return true;
}
static const struct regmap_config tps65090_regmap_config = {

11
drivers/power/tps65090-charger.c
View File

@ -28,17 +28,6 @@
#include <linux/mfd/tps65090.h>
#define TPS65090_REG_INTR_STS 0x00
#define TPS65090_REG_INTR_MASK 0x02
#define TPS65090_REG_CG_CTRL0 0x04
#define TPS65090_REG_CG_CTRL1 0x05
#define TPS65090_REG_CG_CTRL2 0x06
#define TPS65090_REG_CG_CTRL3 0x07
#define TPS65090_REG_CG_CTRL4 0x08
#define TPS65090_REG_CG_CTRL5 0x09
#define TPS65090_REG_CG_STATUS1 0x0a
#define TPS65090_REG_CG_STATUS2 0x0b
#define TPS65090_CHARGER_ENABLE BIT(0)
#define TPS65090_VACG BIT(1)
#define TPS65090_NOITERM BIT(5)

14
include/linux/mfd/tps65090.h
View File

@ -64,6 +64,20 @@ enum {
TPS65090_REGULATOR_MAX,
};
/* Register addresses */
#define TPS65090_REG_INTR_STS 0x00
#define TPS65090_REG_INTR_STS2 0x01
#define TPS65090_REG_INTR_MASK 0x02
#define TPS65090_REG_INTR_MASK2 0x03
#define TPS65090_REG_CG_CTRL0 0x04
#define TPS65090_REG_CG_CTRL1 0x05
#define TPS65090_REG_CG_CTRL2 0x06
#define TPS65090_REG_CG_CTRL3 0x07
#define TPS65090_REG_CG_CTRL4 0x08
#define TPS65090_REG_CG_CTRL5 0x09
#define TPS65090_REG_CG_STATUS1 0x0a
#define TPS65090_REG_CG_STATUS2 0x0b
struct tps65090 {
struct device *dev;
struct regmap *rmap;