Commit a650fdd9 authored by Guo Zeng's avatar Guo Zeng Committed by Mark Brown
Browse files

regmap: irq: add ack_invert flag for chips using cleared bits as ack 



An user will be CSR SiRFSoC ARM chips.

Signed-off-by: default avatarGuo Zeng <Guo.Zeng@csr.com>
Signed-off-by: default avatarBarry Song <Baohua.Song@csr.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 7b7d1968

drivers/base/regmap/regmap-irq.c

+10 −2
Original line number Diff line number Diff line
@@ -133,6 +133,10 @@ 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);

			/* 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",
@@ -470,6 +474,10 @@ 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);

			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) {

include/linux/regmap.h

+2 −0
Original line number Diff line number Diff line
@@ -809,6 +809,7 @@ struct regmap_irq { 
 * @init_ack_masked: Ack all masked interrupts once during initalization.

 * @mask_invert: Inverted mask register: cleared bits are masked out.

 * @use_ack:     Use @ack register even if it is zero.

 * @ack_invert:  Inverted ack register: cleared bits for ack.

 * @wake_invert: Inverted wake register: cleared bits are wake enabled.

 * @runtime_pm:  Hold a runtime PM lock on the device when accessing it.

 *
@@ -829,6 +830,7 @@ struct regmap_irq_chip { 
	bool init_ack_masked:1;

	bool mask_invert:1;

	bool use_ack:1;

	bool ack_invert:1;

	bool wake_invert:1;

	bool runtime_pm:1;