R0dn3yS/android_kernel_xiaomi_sm7250
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

regmap: irq: Add support to clear ack registers

Browse Source 
WCD937x 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>
This commit is contained in:
Ramprasad Katkam 2018-09-20 18:33:01 +05:30 committed by Gerrit - the friendly Code Review server
parent eac6c82e38
commit 25401ed921
2 changed files with 10 additions and 0 deletions
Show Stats 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

@ -1176,6 +1176,7 @@ 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;