Commit f84e9954 authored by Chanwoo Choi's avatar Chanwoo Choi Committed by Samuel Ortiz

mfd: MAX77693: Fix interrupt handling bug

This patch fix bug related to interrupt handling for MAX77693 devices.
- Unmask interrupt masking bit for charger/flash/muic to revolve
that interrupt isn't happened when external connector is attached.
- Fix wrong regmap instance when muic interrupt is happened.

This patch were discussed and confirm discussion about this patch on below url:
http://lkml.org/lkml/2012/7/16/118Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarMyungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 0fd0013c
...@@ -137,6 +137,9 @@ static void max77693_irq_mask(struct irq_data *data) ...@@ -137,6 +137,9 @@ static void max77693_irq_mask(struct irq_data *data)
const struct max77693_irq_data *irq_data = const struct max77693_irq_data *irq_data =
irq_to_max77693_irq(max77693, data->irq); irq_to_max77693_irq(max77693, data->irq);
if (irq_data->group >= MAX77693_IRQ_GROUP_NR)
return;
if (irq_data->group >= MUIC_INT1 && irq_data->group <= MUIC_INT3) if (irq_data->group >= MUIC_INT1 && irq_data->group <= MUIC_INT3)
max77693->irq_masks_cur[irq_data->group] &= ~irq_data->mask; max77693->irq_masks_cur[irq_data->group] &= ~irq_data->mask;
else else
...@@ -149,6 +152,9 @@ static void max77693_irq_unmask(struct irq_data *data) ...@@ -149,6 +152,9 @@ static void max77693_irq_unmask(struct irq_data *data)
const struct max77693_irq_data *irq_data = const struct max77693_irq_data *irq_data =
irq_to_max77693_irq(max77693, data->irq); irq_to_max77693_irq(max77693, data->irq);
if (irq_data->group >= MAX77693_IRQ_GROUP_NR)
return;
if (irq_data->group >= MUIC_INT1 && irq_data->group <= MUIC_INT3) if (irq_data->group >= MUIC_INT1 && irq_data->group <= MUIC_INT3)
max77693->irq_masks_cur[irq_data->group] |= irq_data->mask; max77693->irq_masks_cur[irq_data->group] |= irq_data->mask;
else else
...@@ -200,7 +206,7 @@ static irqreturn_t max77693_irq_thread(int irq, void *data) ...@@ -200,7 +206,7 @@ static irqreturn_t max77693_irq_thread(int irq, void *data)
if (irq_src & MAX77693_IRQSRC_MUIC) if (irq_src & MAX77693_IRQSRC_MUIC)
/* MUIC INT1 ~ INT3 */ /* MUIC INT1 ~ INT3 */
max77693_bulk_read(max77693->regmap, MAX77693_MUIC_REG_INT1, max77693_bulk_read(max77693->regmap_muic, MAX77693_MUIC_REG_INT1,
MAX77693_NUM_IRQ_MUIC_REGS, &irq_reg[MUIC_INT1]); MAX77693_NUM_IRQ_MUIC_REGS, &irq_reg[MUIC_INT1]);
/* Apply masking */ /* Apply masking */
...@@ -255,7 +261,8 @@ int max77693_irq_init(struct max77693_dev *max77693) ...@@ -255,7 +261,8 @@ int max77693_irq_init(struct max77693_dev *max77693)
{ {
struct irq_domain *domain; struct irq_domain *domain;
int i; int i;
int ret; int ret = 0;
u8 intsrc_mask;
mutex_init(&max77693->irqlock); mutex_init(&max77693->irqlock);
...@@ -287,19 +294,38 @@ int max77693_irq_init(struct max77693_dev *max77693) ...@@ -287,19 +294,38 @@ int max77693_irq_init(struct max77693_dev *max77693)
&max77693_irq_domain_ops, max77693); &max77693_irq_domain_ops, max77693);
if (!domain) { if (!domain) {
dev_err(max77693->dev, "could not create irq domain\n"); dev_err(max77693->dev, "could not create irq domain\n");
return -ENODEV; ret = -ENODEV;
goto err_irq;
} }
max77693->irq_domain = domain; max77693->irq_domain = domain;
/* Unmask max77693 interrupt */
ret = max77693_read_reg(max77693->regmap,
MAX77693_PMIC_REG_INTSRC_MASK, &intsrc_mask);
if (ret < 0) {
dev_err(max77693->dev, "fail to read PMIC register\n");
goto err_irq;
}
intsrc_mask &= ~(MAX77693_IRQSRC_CHG);
intsrc_mask &= ~(MAX77693_IRQSRC_FLASH);
intsrc_mask &= ~(MAX77693_IRQSRC_MUIC);
ret = max77693_write_reg(max77693->regmap,
MAX77693_PMIC_REG_INTSRC_MASK, intsrc_mask);
if (ret < 0) {
dev_err(max77693->dev, "fail to write PMIC register\n");
goto err_irq;
}
ret = request_threaded_irq(max77693->irq, NULL, max77693_irq_thread, ret = request_threaded_irq(max77693->irq, NULL, max77693_irq_thread,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT, IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"max77693-irq", max77693); "max77693-irq", max77693);
if (ret) if (ret)
dev_err(max77693->dev, "Failed to request IRQ %d: %d\n", dev_err(max77693->dev, "Failed to request IRQ %d: %d\n",
max77693->irq, ret); max77693->irq, ret);
return 0; err_irq:
return ret;
} }
void max77693_irq_exit(struct max77693_dev *max77693) void max77693_irq_exit(struct max77693_dev *max77693)
......
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