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Subject[PATCH 2/4] mfd: 88pm800: use irq_mode to configure interrupt status reg clear method
Date
From the spec, bit 1 of reg 0xe (page 0): IN_CLEAR_MODE controls the
method of clearing interrupt status register of 88pm800;

0: clear on read
1: clear on write

Signed-off-by: zhaoy <zhaoy@marvell.com>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
---
drivers/mfd/88pm800.c | 4 +++-
include/linux/mfd/88pm80x.h | 2 ++
2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c
index 06ee058..8ea4467 100644
--- a/drivers/mfd/88pm800.c
+++ b/drivers/mfd/88pm800.c
@@ -391,7 +391,8 @@ static int device_irq_init_800(struct pm80x_chip *chip)
PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
PM800_WAKEUP2_INT_MASK;

- data = PM800_WAKEUP2_INT_CLEAR;
+ data = (chip->irq_mode) ?
+ PM800_WAKEUP2_INT_WRITE_CLEAR : PM800_WAKEUP2_INT_READ_CLEAR;
ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);

if (ret < 0)
@@ -514,6 +515,7 @@ static int device_800_init(struct pm80x_chip *chip,
}

chip->regmap_irq_chip = &pm800_irq_chip;
+ chip->irq_mode = pdata->irq_mode;

ret = device_irq_init_800(chip);
if (ret < 0) {
diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h
index 97cb283..6ed6c16 100644
--- a/include/linux/mfd/88pm80x.h
+++ b/include/linux/mfd/88pm80x.h
@@ -77,6 +77,8 @@ enum {
#define PM800_WAKEUP2 (0x0E)
#define PM800_WAKEUP2_INV_INT (1 << 0)
#define PM800_WAKEUP2_INT_CLEAR (1 << 1)
+#define PM800_WAKEUP2_INT_READ_CLEAR (0 << 1)
+#define PM800_WAKEUP2_INT_WRITE_CLEAR (1 << 1)
#define PM800_WAKEUP2_INT_MASK (1 << 2)

#define PM800_POWER_UP_LOG (0x10)
--
1.9.1


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