Commit ba5890a0 authored by Mark Brown's avatar Mark Brown
Browse files

Merge tag 'regmap-irq-unmask' into regmap-next 

regmap: Support for split mask and unmask interrupt registers

This branch adds an interface for supporting devices which have separate
mask and unmask registers.

# gpg: Signature made Thu 17 Sep 2015 11:52:20 BST using RSA key ID 5D5487D0
# gpg: Oops: keyid_from_fingerprint: no pubkey
# gpg: Oops: keyid_from_fingerprint: no pubkey
# gpg: key 00000000 occurs more than once in the trustdb
# gpg: key 16005C11: no public key for trusted key - skipped
# gpg: key 16005C11 marked as ultimately trusted
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
parents 25cb62b7 a650fdd9

drivers/base/regmap/regmap-irq.c

+38 −5
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data) 
	struct regmap *map = d->map;

	int i, ret;

	u32 reg;

	u32 unmask_offset;



	if (d->chip->runtime_pm) {

		ret = pm_runtime_get_sync(map->dev);
@@ -79,12 +80,28 @@ static void regmap_irq_sync_unlock(struct irq_data *data) 
	for (i = 0; i < d->chip->num_regs; i++) {

		reg = d->chip->mask_base +

			(i * map->reg_stride * d->irq_reg_stride);

		if (d->chip->mask_invert)

		if (d->chip->mask_invert) {

			ret = regmap_update_bits(d->map, reg,

					 d->mask_buf_def[i], ~d->mask_buf[i]);

		else

		} else if (d->chip->unmask_base) {

			/* set mask with mask_base register */

			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 unmasks in %x\n",

					reg);

			unmask_offset = d->chip->unmask_base -

							d->chip->mask_base;

			/* clear mask with unmask_base register */

			ret = regmap_update_bits(d->map,

					reg + unmask_offset,

					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",

				reg);
@@ -116,6 +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",
@@ -339,6 +360,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, 
	int i;

	int ret = -ENOMEM;

	u32 reg;

	u32 unmask_offset;



	if (chip->num_regs <= 0)

		return -EINVAL;
@@ -420,7 +442,14 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, 
		if (chip->mask_invert)

			ret = regmap_update_bits(map, reg,

					 d->mask_buf[i], ~d->mask_buf[i]);

		else

		else if (d->chip->unmask_base) {

			unmask_offset = d->chip->unmask_base -

					d->chip->mask_base;

			ret = regmap_update_bits(d->map,

					reg + unmask_offset,

					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) {
@@ -445,6 +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

+5 −0
Original line number Diff line number Diff line
@@ -800,6 +800,8 @@ struct regmap_irq { 
 *

 * @status_base: Base status register address.

 * @mask_base:   Base mask register address.

 * @unmask_base:  Base unmask register address. for chips who have

 *                separate mask and unmask registers

 * @ack_base:    Base ack address. If zero then the chip is clear on read.

 *               Using zero value is possible with @use_ack bit.

 * @wake_base:   Base address for wake enables.  If zero unsupported.
@@ -807,6 +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.

 *
@@ -820,12 +823,14 @@ struct regmap_irq_chip { 


	unsigned int status_base;

	unsigned int mask_base;

	unsigned int unmask_base;

	unsigned int ack_base;

	unsigned int wake_base;

	unsigned int irq_reg_stride;

	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;

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