regmap: irq: Add mask invert flag for enable register
Currently, regmap will write 1 to mask_base to mask
an interrupt and write 0 to unmask it.
But some chips do not have an interrupt mask register,
and only have interrupt enable register.
Then we should write 0 to disable interrupt and 1 to enable.
So add an mask_invert flag to handle this.
If it is not set, behavior is same as previous.
If set it to 1, the mask value will be inverted
before written to mask_base
Signed-off-by: Xiaofan Tian <tianxf@marvell.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index bb5e103..094f998 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -78,7 +78,11 @@
for (i = 0; i < d->chip->num_regs; i++) {
reg = d->chip->mask_base +
(i * map->reg_stride * d->irq_reg_stride);
- ret = regmap_update_bits(d->map, reg,
+ if (d->chip->mask_invert)
+ ret = regmap_update_bits(d->map, reg,
+ d->mask_buf_def[i], ~d->mask_buf[i]);
+ else
+ ret = regmap_update_bits(d->map, reg,
d->mask_buf_def[i], d->mask_buf[i]);
if (ret != 0)
dev_err(d->map->dev, "Failed to sync masks in %x\n",
@@ -338,7 +342,11 @@
d->mask_buf[i] = d->mask_buf_def[i];
reg = chip->mask_base +
(i * map->reg_stride * d->irq_reg_stride);
- ret = regmap_update_bits(map, reg,
+ if (chip->mask_invert)
+ ret = regmap_update_bits(map, reg,
+ d->mask_buf[i], ~d->mask_buf[i]);
+ else
+ ret = regmap_update_bits(map, reg,
d->mask_buf[i], d->mask_buf[i]);
if (ret != 0) {
dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",