Merge tag 'mfd-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "This round of updates contains a fair amount of new device support, a
  couple of fixes and some refactoring. The most notable additions
  include new drivers for Loongson's Security Engine, RNG and TPM, new
  drivers for TI's TPS6594 Power Button and BQ257xx Charger ICs.

  The rest of the set provides a return value check fix and a
  refactoring to use a more modern GPIO API for the VEXPRESS sysreg
  driver, the removal of a deprecated IRQ ACK function from the MC13xxx
  RTC driver and a new DT binding for the aforementioned TI BQ257xx
  charger.

  New Support & Features:
   - Add a suite of drivers for the Loongson Security Engine, including
     the core controller, a Random Number Generator (RNG) and Trusted
     Platform Module (TPM) support.
   - Introduce support for the TI TPS6594 PMIC's power button, including
     the input driver, MFD cell registration, and a system power-off
     handler.
   - Add comprehensive support for the TI BQ257xx series of charger ICs,
     including the core MFD driver and a power supply driver for the
     charger functionality.

  Improvements & Fixes:
   - Check the return value of devm_gpiochip_add_data() in the VEXPRESS
     sysreg driver to prevent potential silent failures.

  Cleanups & Refactoring:
   - Add a MAINTAINERS entry for the new Loongson Security Engine
     drivers.
   - Convert the VEXPRESS sysreg driver to use the modern generic GPIO
     chip API.

  Removals:
   - Remove the deprecated and unused mc13xxx_irq_ack() function from
     the MC13xxx RTC, input and touchscreen drivers.

  Device Tree Bindings Updates:
   - Add device tree bindings for the TI BQ25703A charger"

* tag 'mfd-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (69 commits)
  mfd: simple-mfd-i2c: Add compatible string for LX2160ARDB
  mfd: simple-mfd-i2c: Keep compatible strings in alphabetical order
  dt-bindings: mfd: twl: Add missing sub-nodes for TWL4030 & TWL603x
  dt-bindings: watchdog: Add SMARC-sAM67 support
  dt-bindings: mfd: tps6594: Allow gpio-line-names
  mfd: intel-lpss: Add Intel Wildcat Lake LPSS PCI IDs
  mfd: 88pm886: Add GPADC cell
  mfd: vexpress-sysreg: Use more common syntax for compound literals
  mfd: rz-mtu3: Fix MTU5 NFCR register offset
  mfd: max77705: Setup the core driver as an interrupt controller
  mfd: cs42l43: Remove IRQ masking in suspend
  mfd: cs42l43: Move IRQ enable/disable to encompass force suspend
  mfd: ls2kbmc: Add Loongson-2K BMC reset function support
  mfd: ls2kbmc: Introduce Loongson-2K BMC core driver
  mfd: bd71828, bd71815: Prepare for power-supply support
  dt-bindings: mfd: aspeed: Add AST2700 SCU compatibles
  dt-bindings: mfd: Convert aspeed,ast2400-p2a-ctrl to DT schema
  dt-bindings: mfd: fsl,mc13xxx: Add buttons node
  dt-bindings: mfd: fsl,mc13xxx: Convert txt to DT schema
  mfd: macsmc: Add "apple,t8103-smc" compatible
  ...

5 files changed, 137 insertions, 5 deletions

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index d604aad90a89..0e6b49fb54bc 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -516,6 +516,16 @@ config INPUT_TPS65219_PWRBUTTON
 	  To compile this driver as a module, choose M here. The module will
 	  be called tps65219-pwrbutton.
 
+config INPUT_TPS6594_PWRBUTTON
+	tristate "TPS6594 Power button driver"
+	depends on MFD_TPS6594
+	help
+	  Say Y here if you want to enable power button reporting for
+	  TPS6594 Power Management IC devices.
+
+	  To compile this driver as a module, choose M here. The module will
+	  be called tps6594-pwrbutton.
+
 config INPUT_AXP20X_PEK
 	tristate "X-Powers AXP20X power button driver"
 	depends on MFD_AXP20X
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index ac45cb9b5c99..ae857c24f48e 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -84,6 +84,7 @@ obj-$(CONFIG_INPUT_SPARCSPKR)		+= sparcspkr.o
 obj-$(CONFIG_INPUT_STPMIC1_ONKEY)  	+= stpmic1_onkey.o
 obj-$(CONFIG_INPUT_TPS65218_PWRBUTTON)	+= tps65218-pwrbutton.o
 obj-$(CONFIG_INPUT_TPS65219_PWRBUTTON)	+= tps65219-pwrbutton.o
+obj-$(CONFIG_INPUT_TPS6594_PWRBUTTON)	+= tps6594-pwrbutton.o
 obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON)	+= twl4030-pwrbutton.o
 obj-$(CONFIG_INPUT_TWL4030_VIBRA)	+= twl4030-vibra.o
 obj-$(CONFIG_INPUT_TWL6040_VIBRA)	+= twl6040-vibra.o
diff --git a/drivers/input/misc/mc13783-pwrbutton.c b/drivers/input/misc/mc13783-pwrbutton.c
index 1c7faa9b7afe..b83d762ae2e9 100644
--- a/drivers/input/misc/mc13783-pwrbutton.c
+++ b/drivers/input/misc/mc13783-pwrbutton.c
@@ -57,7 +57,6 @@ static irqreturn_t button_irq(int irq, void *_priv)
 	struct mc13783_pwrb *priv = _priv;
 	int val;
 
-	mc13xxx_irq_ack(priv->mc13783, irq);
 	mc13xxx_reg_read(priv->mc13783, MC13783_REG_INTERRUPT_SENSE_1, &val);
 
 	switch (irq) {
diff --git a/drivers/input/misc/tps6594-pwrbutton.c b/drivers/input/misc/tps6594-pwrbutton.c
new file mode 100644
index 000000000000..cd039b3866dc
--- /dev/null
+++ b/drivers/input/misc/tps6594-pwrbutton.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * power button driver for TI TPS6594 PMICs
+ *
+ * Copyright (C) 2025 Critical Link LLC - https://www.criticallink.com/
+ */
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/tps6594.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+struct tps6594_pwrbutton {
+	struct device *dev;
+	struct input_dev *idev;
+	char phys[32];
+};
+
+static irqreturn_t tps6594_pb_push_irq(int irq, void *_pwr)
+{
+	struct tps6594_pwrbutton *pwr = _pwr;
+
+	input_report_key(pwr->idev, KEY_POWER, 1);
+	pm_wakeup_event(pwr->dev, 0);
+	input_sync(pwr->idev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t tps6594_pb_release_irq(int irq, void *_pwr)
+{
+	struct tps6594_pwrbutton *pwr = _pwr;
+
+	input_report_key(pwr->idev, KEY_POWER, 0);
+	input_sync(pwr->idev);
+
+	return IRQ_HANDLED;
+}
+
+static int tps6594_pb_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct tps6594_pwrbutton *pwr;
+	struct input_dev *idev;
+	int error;
+	int push_irq;
+	int release_irq;
+
+	pwr = devm_kzalloc(dev, sizeof(*pwr), GFP_KERNEL);
+	if (!pwr)
+		return -ENOMEM;
+
+	idev = devm_input_allocate_device(dev);
+	if (!idev)
+		return -ENOMEM;
+
+	idev->name = pdev->name;
+	snprintf(pwr->phys, sizeof(pwr->phys), "%s/input0",
+		 pdev->name);
+	idev->phys = pwr->phys;
+	idev->id.bustype = BUS_I2C;
+
+	input_set_capability(idev, EV_KEY, KEY_POWER);
+
+	pwr->dev = dev;
+	pwr->idev = idev;
+	device_init_wakeup(dev, true);
+
+	push_irq = platform_get_irq(pdev, 0);
+	if (push_irq < 0)
+		return -EINVAL;
+
+	release_irq = platform_get_irq(pdev, 1);
+	if (release_irq < 0)
+		return -EINVAL;
+
+	error = devm_request_threaded_irq(dev, push_irq, NULL,
+					  tps6594_pb_push_irq,
+					  IRQF_ONESHOT,
+					  pdev->resource[0].name, pwr);
+	if (error) {
+		dev_err(dev, "failed to request push IRQ #%d: %d\n", push_irq,
+			error);
+		return error;
+	}
+
+	error = devm_request_threaded_irq(dev, release_irq, NULL,
+					  tps6594_pb_release_irq,
+					  IRQF_ONESHOT,
+					  pdev->resource[1].name, pwr);
+	if (error) {
+		dev_err(dev, "failed to request release IRQ #%d: %d\n",
+			release_irq, error);
+		return error;
+	}
+
+	error = input_register_device(idev);
+	if (error) {
+		dev_err(dev, "Can't register power button: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id tps6594_pwrbtn_id_table[] = {
+	{ "tps6594-pwrbutton", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps6594_pwrbtn_id_table);
+
+static struct platform_driver tps6594_pb_driver = {
+	.probe = tps6594_pb_probe,
+	.driver = {
+		.name = "tps6594_pwrbutton",
+	},
+	.id_table = tps6594_pwrbtn_id_table,
+};
+module_platform_driver(tps6594_pb_driver);
+
+MODULE_DESCRIPTION("TPS6594 Power Button");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/mc13783_ts.c b/drivers/input/touchscreen/mc13783_ts.c
index 33635da85079..47b8da00027f 100644
--- a/drivers/input/touchscreen/mc13783_ts.c
+++ b/drivers/input/touchscreen/mc13783_ts.c
@@ -42,8 +42,6 @@ static irqreturn_t mc13783_ts_handler(int irq, void *data)
 {
 	struct mc13783_ts_priv *priv = data;
 
-	mc13xxx_irq_ack(priv->mc13xxx, irq);
-
 	/*
 	 * Kick off reading coordinates. Note that if work happens already
 	 * be queued for future execution (it rearms itself) it will not
@@ -137,8 +135,6 @@ static int mc13783_ts_open(struct input_dev *dev)
 
 	mc13xxx_lock(priv->mc13xxx);
 
-	mc13xxx_irq_ack(priv->mc13xxx, MC13XXX_IRQ_TS);
-
 	ret = mc13xxx_irq_request(priv->mc13xxx, MC13XXX_IRQ_TS,
 		mc13783_ts_handler, MC13783_TS_NAME, priv);
 	if (ret)