diff options
| author |   Alexander Shiyan <shc_work@mail.ru> | 2013-12-15 13:36:51 +0400 |
|---|---|---|
| committer |   Mark Brown <broonie@linaro.org> | 2013-12-16 20:50:13 +0000 |
| commit | d3233433356aa1965b60b08ee61465b20e50474b (patch) | |
| tree | cd693a91f65f5c2aa937047459fd6f3d49fcd719 /drivers/base | |
| parent | Linux 3.13-rc4 (diff) | |
| download | linux-dev-d3233433356aa1965b60b08ee61465b20e50474b.tar.xz linux-dev-d3233433356aa1965b60b08ee61465b20e50474b.zip | |
regmap: irq: Allow using zero value for ack_base
In some cases, clear interrupt register may be at address 0.
This patch allows to use such configurations by adding additional
configuration bit to indicate this.
[With doc fix from Levente Kurusa <levex@linux.com> -- broonie]
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap-irq.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index 763c60d3d277..82692068d3cb 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -113,7 +113,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data) * OR if there is masked interrupt which hasn't been Acked, * it'll be ignored in irq handler, then may introduce irq storm */ - if (d->mask_buf[i] && d->chip->ack_base) { + 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]); @@ -271,7 +271,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) for (i = 0; i < data->chip->num_regs; i++) { data->status_buf[i] &= ~data->mask_buf[i]; - if (data->status_buf[i] && chip->ack_base) { + if (data->status_buf[i] && (chip->ack_base || chip->use_ack)) { reg = chip->ack_base + (i * map->reg_stride * data->irq_reg_stride); ret = regmap_write(map, reg, data->status_buf[i]); @@ -448,7 +448,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, goto err_alloc; } - if (d->status_buf[i] && chip->ack_base) { + 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, |