Lubancat2/kernel
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ANDROID: GKI: regmap: irq: Add support to clear ack registers

Browse Source 
WCD codec requires clear registers to be written '1' and
'0' for clearing interrupts. Add this support in regmap irq
to clear ack registers.

Change-Id: I399592fc0ee7f3a01a32267684a9be340076ffb1
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>
Bug: 153500481
[saravanak Minor edit to commit text]
(cherry picked from commit 25401ed921044cafdf588efb2e6ba19e8454f14a)
Signed-off-by: Saravana Kannan <saravanak@google.com>
This commit is contained in:
Ramprasad Katkam
2018-09-20 18:33:01 +05:30
committed by Saravana Kannan
parent 6b5a4bd4a4
commit 171d2c87ca
2 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/base/regmap/regmap-irq.c
View File

@ -154,6 +154,9 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
ret = regmap_write(map, reg, ~d->mask_buf[i]);
else
ret = regmap_write(map, reg, d->mask_buf[i]);
/* some chips needs to clear ack reg after ack */
if (d->chip->clear_ack)
ret = regmap_write(map, reg, 0x0);
if (ret != 0)
dev_err(d->map->dev, "Failed to ack 0x%x: %d\n",
reg, ret);
@ -364,6 +367,9 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
reg = chip->ack_base +
(i * map->reg_stride * data->irq_reg_stride);
ret = regmap_write(map, reg, data->status_buf[i]);
/* some chips needs to clear ack reg after ack */
if (chip->clear_ack)
ret = regmap_write(map, reg, 0x0);
if (ret != 0)
dev_err(map->dev, "Failed to ack 0x%x: %d\n",
reg, ret);
@ -575,6 +581,9 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
else
ret = regmap_write(map, reg,
d->status_buf[i] & d->mask_buf[i]);
/* some chips needs to clear ack reg after ack */
if (chip->clear_ack)
ret = regmap_write(map, reg, 0x0);
if (ret != 0) {
dev_err(map->dev, "Failed to ack 0x%x: %d\n",
reg, ret);

1
include/linux/regmap.h
View File

@ -1145,6 +1145,7 @@ struct regmap_irq_chip {
unsigned int wake_base;
unsigned int type_base;
unsigned int irq_reg_stride;
unsigned int clear_ack;
bool mask_writeonly:1;
bool init_ack_masked:1;
bool mask_invert:1;