linux-kernel - [PATCH v7 02/10] mfd: tps6594: use volatile_table instead of volatile

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Message-ID: <0109018eebe4532e-f60a4f0a-a64f-4d67-92d6-763ff0d6b2a0-000000@ap-south-1.amazonses.com>
Date: Wed, 17 Apr 2024 11:49:53 +0000
From: Bhargav Raviprakash <bhargav.r@...s.com>
To: linux-kernel@...r.kernel.org
Cc: m.nirmaladevi@...s.com, lee@...nel.org, robh+dt@...nel.org, 
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, 
	jpanis@...libre.com, devicetree@...r.kernel.org, arnd@...db.de, 
	gregkh@...uxfoundation.org, lgirdwood@...il.com, broonie@...nel.org, 
	linus.walleij@...aro.org, linux-gpio@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, nm@...com, vigneshr@...com, 
	kristo@...nel.org, eblanc@...libre.com, 
	Bhargav Raviprakash <bhargav.r@...s.com>
Subject: [PATCH v7 02/10] mfd: tps6594: use volatile_table instead of volatile_reg

In regmap_config use volatile_table instead of volatile_reg. This change
makes it easier to add support for TPS65224 PMIC.

Signed-off-by: Bhargav Raviprakash <bhargav.r@...s.com>
Acked-by: Julien Panis <jpanis@...libre.com>
---
 drivers/mfd/tps6594-core.c  | 16 ++++++++++------
 drivers/mfd/tps6594-i2c.c   |  2 +-
 drivers/mfd/tps6594-spi.c   |  2 +-
 include/linux/mfd/tps6594.h |  4 +++-
 4 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/drivers/mfd/tps6594-core.c b/drivers/mfd/tps6594-core.c
index 783ee5990..089ab8cc8 100644
--- a/drivers/mfd/tps6594-core.c
+++ b/drivers/mfd/tps6594-core.c
@@ -319,12 +319,16 @@ static struct regmap_irq_chip tps6594_irq_chip = {
 	.handle_post_irq = tps6594_handle_post_irq,
 };
 
-bool tps6594_is_volatile_reg(struct device *dev, unsigned int reg)
-{
-	return (reg >= TPS6594_REG_INT_TOP && reg <= TPS6594_REG_STAT_READBACK_ERR) ||
-	       reg == TPS6594_REG_RTC_STATUS;
-}
-EXPORT_SYMBOL_GPL(tps6594_is_volatile_reg);
+static const struct regmap_range tps6594_volatile_ranges[] = {
+	regmap_reg_range(TPS6594_REG_INT_TOP, TPS6594_REG_STAT_READBACK_ERR),
+	regmap_reg_range(TPS6594_REG_RTC_STATUS, TPS6594_REG_RTC_STATUS),
+};
+
+const struct regmap_access_table tps6594_volatile_table = {
+	.yes_ranges = tps6594_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(tps6594_volatile_ranges),
+};
+EXPORT_SYMBOL_GPL(tps6594_volatile_table);
 
 static int tps6594_check_crc_mode(struct tps6594 *tps, bool primary_pmic)
 {
diff --git a/drivers/mfd/tps6594-i2c.c b/drivers/mfd/tps6594-i2c.c
index 899c88c0f..c125b474b 100644
--- a/drivers/mfd/tps6594-i2c.c
+++ b/drivers/mfd/tps6594-i2c.c
@@ -187,7 +187,7 @@ static const struct regmap_config tps6594_i2c_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 8,
 	.max_register = TPS6594_REG_DWD_FAIL_CNT_REG,
-	.volatile_reg = tps6594_is_volatile_reg,
+	.volatile_table = &tps6594_volatile_table,
 	.read = tps6594_i2c_read,
 	.write = tps6594_i2c_write,
 };
diff --git a/drivers/mfd/tps6594-spi.c b/drivers/mfd/tps6594-spi.c
index 24b72847e..5afb1736f 100644
--- a/drivers/mfd/tps6594-spi.c
+++ b/drivers/mfd/tps6594-spi.c
@@ -70,7 +70,7 @@ static const struct regmap_config tps6594_spi_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 8,
 	.max_register = TPS6594_REG_DWD_FAIL_CNT_REG,
-	.volatile_reg = tps6594_is_volatile_reg,
+	.volatile_table = &tps6594_volatile_table,
 	.reg_read = tps6594_spi_reg_read,
 	.reg_write = tps6594_spi_reg_write,
 	.use_single_read = true,
diff --git a/include/linux/mfd/tps6594.h b/include/linux/mfd/tps6594.h
index e754c01ac..16543fd4d 100644
--- a/include/linux/mfd/tps6594.h
+++ b/include/linux/mfd/tps6594.h
@@ -1337,7 +1337,9 @@ struct tps6594 {
 	struct regmap_irq_chip_data *irq_data;
 };
 
-bool tps6594_is_volatile_reg(struct device *dev, unsigned int reg);
+extern const struct regmap_access_table tps6594_volatile_table;
+extern const struct regmap_access_table tps65224_volatile_table;
+
 int tps6594_device_init(struct tps6594 *tps, bool enable_crc);
 
 #endif /*  __LINUX_MFD_TPS6594_H */
-- 
2.25.1