linux-kernel - [PATCH v1 3/5] misc: tps6594-pfsm: Add TI TPS652G1 PMIC PFSM

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Message-Id: <20250611133137.1686183-4-mwalle@kernel.org>
Date: Wed, 11 Jun 2025 15:31:35 +0200
From: Michael Walle <mwalle@...nel.org>
To: Lee Jones <lee@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Julien Panis <jpanis@...libre.com>
Cc: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	Michael Walle <mwalle@...nel.org>
Subject: [PATCH v1 3/5] misc: tps6594-pfsm: Add TI TPS652G1 PMIC PFSM

The TPS652G1 is a stripped down TPS65224, but the PFSM is the same.
Thus, handle it the same way as the TPS65224 in the driver.

Signed-off-by: Michael Walle <mwalle@...nel.org>
---
 drivers/misc/tps6594-pfsm.c | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/drivers/misc/tps6594-pfsm.c b/drivers/misc/tps6594-pfsm.c
index 6db1c9d48f8f..44fa81d6cec2 100644
--- a/drivers/misc/tps6594-pfsm.c
+++ b/drivers/misc/tps6594-pfsm.c
@@ -1,6 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * PFSM (Pre-configurable Finite State Machine) driver for TI TPS65224/TPS6594/TPS6593/LP8764 PMICs
+ * PFSM (Pre-configurable Finite State Machine) driver for the following
+ * PMICs:
+ * - LP8764
+ * - TPS65224
+ * - TPS652G1
+ * - TPS6594
+ * - TPS6593
  *
  * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
  */
@@ -141,7 +147,7 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
 	switch (cmd) {
 	case PMIC_GOTO_STANDBY:
 		/* Disable LP mode on TPS6594 Family PMIC */
-		if (pfsm->chip_id != TPS65224) {
+		if (pfsm->chip_id != TPS65224 && pfsm->chip_id != TPS652G1) {
 			ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,
 						TPS6594_BIT_LP_STANDBY_SEL);
 
@@ -154,8 +160,8 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
 					TPS6594_BIT_TRIGGER_I2C(0), TPS6594_BIT_TRIGGER_I2C(0));
 		break;
 	case PMIC_GOTO_LP_STANDBY:
-		/* TPS65224 does not support LP STANDBY */
-		if (pfsm->chip_id == TPS65224)
+		/* TPS65224/TPS652G1 does not support LP STANDBY */
+		if (pfsm->chip_id == TPS65224 || pfsm->chip_id == TPS652G1)
 			return ret;
 
 		/* Enable LP mode */
@@ -179,8 +185,8 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
 				      TPS6594_BIT_NSLEEP1B | TPS6594_BIT_NSLEEP2B);
 		break;
 	case PMIC_SET_MCU_ONLY_STATE:
-		/* TPS65224 does not support MCU_ONLY_STATE */
-		if (pfsm->chip_id == TPS65224)
+		/* TPS65224/TPS652G1 does not support MCU_ONLY_STATE */
+		if (pfsm->chip_id == TPS65224 || pfsm->chip_id == TPS652G1)
 			return ret;
 
 		if (copy_from_user(&state_opt, argp, sizeof(state_opt)))
@@ -206,7 +212,7 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
 			return -EFAULT;
 
 		/* Configure wake-up destination */
-		if (pfsm->chip_id == TPS65224) {
+		if (pfsm->chip_id == TPS65224 || pfsm->chip_id == TPS652G1) {
 			regmap_reg = TPS65224_REG_STARTUP_CTRL;
 			mask = TPS65224_MASK_STARTUP_DEST;
 		} else {
@@ -230,9 +236,14 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a
 			return ret;
 
 		/* Modify NSLEEP1-2 bits */
-		ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS,
-					pfsm->chip_id == TPS65224 ?
-					TPS6594_BIT_NSLEEP1B : TPS6594_BIT_NSLEEP2B);
+		if (pfsm->chip_id == TPS65224 || pfsm->chip_id == TPS652G1)
+			ret = regmap_clear_bits(pfsm->regmap,
+						TPS6594_REG_FSM_NSLEEP_TRIGGERS,
+						TPS6594_BIT_NSLEEP1B);
+		else
+			ret = regmap_clear_bits(pfsm->regmap,
+						TPS6594_REG_FSM_NSLEEP_TRIGGERS,
+						TPS6594_BIT_NSLEEP2B);
 		break;
 	}
 
-- 
2.39.5