linux-kernel - [PATCH 45/49] regmap-irq: Remove mask

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Date:   Mon, 20 Jun 2022 21:06:40 +0100
From:   Aidan MacDonald <aidanmacdonald.0x0@...il.com>
To:     broonie@...nel.org
Cc:     agross@...nel.org, bjorn.andersson@...aro.org,
        srinivas.kandagatla@...aro.org, bgoswami@...eaurora.org,
        gregkh@...uxfoundation.org, rafael@...nel.org,
        cw00.choi@...sung.com, krzysztof.kozlowski@...aro.org,
        b.zolnierkie@...sung.com, myungjoo.ham@...sung.com,
        michael@...le.cc, linus.walleij@...aro.org, brgl@...ev.pl,
        tglx@...utronix.de, maz@...nel.org, lee.jones@...aro.org,
        mani@...nel.org, cristian.ciocaltea@...il.com, wens@...e.org,
        tharvey@...eworks.com, rjones@...eworks.com,
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        perex@...ex.cz, tiwai@...e.com, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-actions@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        alsa-devel@...a-project.org
Subject: [PATCH 45/49] regmap-irq: Remove mask_invert flag

An inverted mask register can be represented more directly
as an unmask register. Drop the redundant mask_invert flag.

Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
---
 drivers/base/regmap/regmap-irq.c | 30 ++++++++----------------------
 include/linux/regmap.h           |  2 --
 2 files changed, 8 insertions(+), 24 deletions(-)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 8a718615fd09..0a8edaee064a 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -30,9 +30,6 @@ struct regmap_irq_chip_data {
 	int irq;
 	int wake_count;
 
-	unsigned int mask_base;
-	unsigned int unmask_base;
-
 	void *status_reg_buf;
 	unsigned int *main_status_buf;
 	unsigned int *status_buf;
@@ -126,8 +123,8 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
 	 * suppress pointless writes.
 	 */
 	for (i = 0; i < d->chip->num_regs; i++) {
-		if (d->mask_base) {
-			reg = sub_irq_reg(d, d->mask_base, i);
+		if (d->chip->mask_base) {
+			reg = sub_irq_reg(d, d->chip->mask_base, i);
 			ret = regmap_irq_update_mask_bits(d, reg,
 					d->mask_buf_def[i], d->mask_buf[i]);
 			if (ret != 0)
@@ -135,8 +132,8 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
 					reg);
 		}
 
-		if (d->unmask_base) {
-			reg = sub_irq_reg(d, d->unmask_base, i);
+		if (d->chip->unmask_base) {
+			reg = sub_irq_reg(d, d->chip->unmask_base, i);
 			ret = regmap_irq_update_mask_bits(d, reg,
 					d->mask_buf_def[i], ~d->mask_buf[i]);
 			if (ret != 0)
@@ -721,17 +718,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	d->chip = chip;
 	d->irq_base = irq_base;
 
-	/*
-	 * Swap role of mask_base and unmask_base if mask bits are inverted.
-	 */
-	if (chip->mask_invert) {
-		d->mask_base = chip->unmask_base;
-		d->unmask_base = chip->mask_base;
-	} else {
-		d->mask_base = chip->mask_base;
-		d->unmask_base = chip->unmask_base;
-	}
-
 	if (chip->irq_reg_stride)
 		d->irq_reg_stride = chip->irq_reg_stride;
 	else
@@ -756,8 +742,8 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	for (i = 0; i < chip->num_regs; i++) {
 		d->mask_buf[i] = d->mask_buf_def[i];
 
-		if (d->mask_base) {
-			reg = sub_irq_reg(d, d->mask_base, i);
+		if (d->chip->mask_base) {
+			reg = sub_irq_reg(d, d->chip->mask_base, i);
 			ret = regmap_irq_update_mask_bits(d, reg,
 					d->mask_buf_def[i], d->mask_buf[i]);
 			if (ret != 0) {
@@ -767,8 +753,8 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			}
 		}
 
-		if (d->unmask_base) {
-			reg = sub_irq_reg(d, d->unmask_base, i);
+		if (d->chip->unmask_base) {
+			reg = sub_irq_reg(d, d->chip->unmask_base, i);
 			ret = regmap_irq_update_mask_bits(d, reg,
 					d->mask_buf_def[i], ~d->mask_buf[i]);
 			if (ret != 0) {
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index a3103c88e936..bb625a1edef9 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -1462,7 +1462,6 @@ struct regmap_irq_sub_irq_map {
  * @config_base: Base address for IRQ type config regs. If null unsupported.
  * @irq_reg_stride:  Stride to use for chips where registers are not contiguous.
  * @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.
  * @clear_ack:  Use this to set 1 and 0 or vice-versa to clear interrupts.
@@ -1514,7 +1513,6 @@ struct regmap_irq_chip {
 	unsigned int irq_reg_stride;
 	bool mask_writeonly:1;
 	bool init_ack_masked:1;
-	bool mask_invert:1;
 	bool use_ack:1;
 	bool ack_invert:1;
 	bool clear_ack:1;
-- 
2.35.1