diff options
| author | Guo Zeng <Guo.Zeng@csr.com> | 2015-09-17 05:23:21 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-09-17 11:46:10 +0100 |
| commit | a650fdd9427f1f5236f83d2d8137bea9b452fa53 (patch) | |
| tree | 4356f18c145f818795b576dd30062703afa4b372 /drivers/base/regmap/regmap-irq.c | |
| parent | 7b7d1968e4c8d8392e8e63906d45d0bcad079037 (diff) | |
| download | linux-a650fdd9427f1f5236f83d2d8137bea9b452fa53.tar.bz2 | |
regmap: irq: add ack_invert flag for chips using cleared bits as ack
An user will be CSR SiRFSoC ARM chips.
Signed-off-by: Guo Zeng <Guo.Zeng@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base/regmap/regmap-irq.c')
| -rw-r--r-- | drivers/base/regmap/regmap-irq.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index e65eec2e7def..8d16db533527 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -133,7 +133,11 @@ static void regmap_irq_sync_unlock(struct irq_data *data) if (d->mask_buf[i] && (d->chip->ack_base || d->chip->use_ack)) { reg = d->chip->ack_base + (i * map->reg_stride * d->irq_reg_stride); - ret = regmap_write(map, reg, d->mask_buf[i]); + /* some chips ack by write 0 */ + if (d->chip->ack_invert) + ret = regmap_write(map, reg, ~d->mask_buf[i]); + else + ret = regmap_write(map, reg, d->mask_buf[i]); if (ret != 0) dev_err(d->map->dev, "Failed to ack 0x%x: %d\n", reg, ret); @@ -470,7 +474,11 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, if (d->status_buf[i] && (chip->ack_base || chip->use_ack)) { reg = chip->ack_base + (i * map->reg_stride * d->irq_reg_stride); - ret = regmap_write(map, reg, + if (chip->ack_invert) + ret = regmap_write(map, reg, + ~(d->status_buf[i] & d->mask_buf[i])); + else + ret = regmap_write(map, reg, d->status_buf[i] & d->mask_buf[i]); if (ret != 0) { dev_err(map->dev, "Failed to ack 0x%x: %d\n", |