Merge tag 'irq-drivers-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq controller updates from Thomas Gleixner:
 "Update for interrupt chip drivers:

   - Convert the generic interrupt chip to lock guards to remove copy &
     pasta boilerplate code and gotos.

   - A new driver fot the interrupt controller in the EcoNet EN751221
     MIPS SoC.

   - Extend the SG2042-MSI driver to support the new SG2044 SoC

   - Updates and cleanups for the (ancient) VT8500 driver

   - Improve the scalability of the ARM GICV4.1 ITS driver by utilizing
     node local copies a VM's interrupt translation table when possible.
     This results in a 12% reduction of VM IPI latency in certain
     workloads.

   - The usual cleanups and improvements all over the place"

* tag 'irq-drivers-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  irqchip/irq-pruss-intc: Simplify chained interrupt handler setup
  irqchip/gic-v4.1: Use local 4_1 ITS to generate VSGI
  irqchip/econet-en751221: Switch to of_fwnode_handle()
  irqchip/irq-vt8500: Switch to irq_domain_create_*()
  irqchip/econet-en751221: Switch to irq_domain_create_linear()
  irqchip/irq-vt8500: Use fewer global variables and add error handling
  irqchip/irq-vt8500: Use a dedicated chained handler function
  irqchip/irq-vt8500: Don't require 8 interrupts from a chained controller
  irqchip/irq-vt8500: Drop redundant copy of the device node pointer
  irqchip/irq-vt8500: Split up ack/mask functions
  irqchip/sg2042-msi: Fix wrong type cast in sg2044_msi_irq_ack()
  irqchip/sg2042-msi: Add the Sophgo SG2044 MSI interrupt controller
  irqchip/sg2042-msi: Introduce configurable chipinfo for SG2042
  irqchip/sg2042-msi: Rename functions and data structures to be SG2042 agnostic
  dt-bindings: interrupt-controller: Add Sophgo SG2044 MSI controller
  genirq/generic-chip: Fix incorrect lock guard conversions
  genirq/generic-chip: Remove unused lock wrappers
  irqchip: Convert generic irqchip locking to guards
  gpio: mvebu: Convert generic irqchip locking to guard()
  ARM: orion/gpio:: Convert generic irqchip locking to guard()
  ...

Author: torvalds

Documentation/devicetree/bindings/interrupt-controller/econet,en751221-intc.yaml

@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/econet,en751221-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: EcoNet EN751221 Interrupt Controller
+
+maintainers:
+  - Caleb James DeLisle <cjd@cjdns.fr>
+
+description:
+  The EcoNet EN751221 Interrupt Controller is a simple interrupt controller
+  designed for the MIPS 34Kc MT SMP processor with 2 VPEs. Each interrupt can
+  be routed to either VPE but not both, so to support per-CPU interrupts, a
+  secondary IRQ number is allocated to control masking/unmasking on VPE#1. For
+  lack of a better term we call these "shadow interrupts". The assignment of
+  shadow interrupts is defined by the SoC integrator when wiring the interrupt
+  lines, so they are configurable in the device tree.
+
+allOf:
+  - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+  compatible:
+    const: econet,en751221-intc
+
+  reg:
+    maxItems: 1
+
+  "#interrupt-cells":
+    const: 1
+
+  interrupt-controller: true
+
+  interrupts:
+    maxItems: 1
+    description: Interrupt line connecting this controller to its parent.
+
+  econet,shadow-interrupts:
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
+    description:
+      An array of interrupt number pairs where each pair represents a shadow
+      interrupt relationship. The first number in each pair is the primary IRQ,
+      and the second is its shadow IRQ used for VPE#1 control. For example,
+      <8 3> means IRQ 8 is shadowed by IRQ 3, so IRQ 3 cannot be mapped, but
+      when VPE#1 requests IRQ 8, it will manipulate the IRQ 3 mask bit.
+    minItems: 1
+    maxItems: 20
+    items:
+      items:
+        - description: primary per-CPU IRQ
+        - description: shadow IRQ number
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - "#interrupt-cells"
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    interrupt-controller@1fb40000 {
+        compatible = "econet,en751221-intc";
+        reg = <0x1fb40000 0x100>;
+
+        interrupt-controller;
+        #interrupt-cells = <1>;
+
+        interrupt-parent = <&cpuintc>;
+        interrupts = <2>;
+
+        econet,shadow-interrupts = <7 2>, <8 3>, <13 12>, <30 29>;
+    };
+...

Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml

@@ -18,7 +18,9 @@ allOf:
 
 properties:
   compatible:
-    const: sophgo,sg2042-msi
+    enum:
+      - sophgo,sg2042-msi
+      - sophgo,sg2044-msi
 
   reg:
     items:

arch/arm/plat-orion/gpio.c

@@ -496,11 +496,10 @@ static void orion_gpio_unmask_irq(struct irq_data *d)
 	u32 reg_val;
 	u32 mask = d->mask;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	reg_val = irq_reg_readl(gc, ct->regs.mask);
 	reg_val |= mask;
 	irq_reg_writel(gc, reg_val, ct->regs.mask);
-	irq_gc_unlock(gc);
 }
 
 static void orion_gpio_mask_irq(struct irq_data *d)
@@ -510,11 +509,10 @@ static void orion_gpio_mask_irq(struct irq_data *d)
 	u32 mask = d->mask;
 	u32 reg_val;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	reg_val = irq_reg_readl(gc, ct->regs.mask);
 	reg_val &= ~mask;
 	irq_reg_writel(gc, reg_val, ct->regs.mask);
-	irq_gc_unlock(gc);
 }
 
 void __init orion_gpio_init(int gpio_base, int ngpio,

drivers/gpio/gpio-mvebu.c

@@ -408,9 +408,8 @@ static void mvebu_gpio_irq_ack(struct irq_data *d)
 	struct mvebu_gpio_chip *mvchip = gc->private;
 	u32 mask = d->mask;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	mvebu_gpio_write_edge_cause(mvchip, ~mask);
-	irq_gc_unlock(gc);
 }
 
 static void mvebu_gpio_edge_irq_mask(struct irq_data *d)
@@ -420,10 +419,9 @@ static void mvebu_gpio_edge_irq_mask(struct irq_data *d)
 	struct irq_chip_type *ct = irq_data_get_chip_type(d);
 	u32 mask = d->mask;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	ct->mask_cache_priv &= ~mask;
 	mvebu_gpio_write_edge_mask(mvchip, ct->mask_cache_priv);
-	irq_gc_unlock(gc);
 }
 
 static void mvebu_gpio_edge_irq_unmask(struct irq_data *d)
@@ -433,11 +431,10 @@ static void mvebu_gpio_edge_irq_unmask(struct irq_data *d)
 	struct irq_chip_type *ct = irq_data_get_chip_type(d);
 	u32 mask = d->mask;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	mvebu_gpio_write_edge_cause(mvchip, ~mask);
 	ct->mask_cache_priv |= mask;
 	mvebu_gpio_write_edge_mask(mvchip, ct->mask_cache_priv);
-	irq_gc_unlock(gc);
 }
 
 static void mvebu_gpio_level_irq_mask(struct irq_data *d)
@@ -447,10 +444,9 @@ static void mvebu_gpio_level_irq_mask(struct irq_data *d)
 	struct irq_chip_type *ct = irq_data_get_chip_type(d);
 	u32 mask = d->mask;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	ct->mask_cache_priv &= ~mask;
 	mvebu_gpio_write_level_mask(mvchip, ct->mask_cache_priv);
-	irq_gc_unlock(gc);
 }
 
 static void mvebu_gpio_level_irq_unmask(struct irq_data *d)
@@ -460,10 +456,9 @@ static void mvebu_gpio_level_irq_unmask(struct irq_data *d)
 	struct irq_chip_type *ct = irq_data_get_chip_type(d);
 	u32 mask = d->mask;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	ct->mask_cache_priv |= mask;
 	mvebu_gpio_write_level_mask(mvchip, ct->mask_cache_priv);
-	irq_gc_unlock(gc);
 }
 
 /*****************************************************************************

drivers/irqchip/Kconfig

@@ -166,6 +166,11 @@ config DW_APB_ICTL
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN_HIERARCHY
 
+config ECONET_EN751221_INTC
+	bool
+	select GENERIC_IRQ_CHIP
+	select IRQ_DOMAIN
+
 config FARADAY_FTINTC010
 	bool
 	select IRQ_DOMAIN

drivers/irqchip/Makefile

@@ -10,6 +10,7 @@ obj-$(CONFIG_ARCH_BCM2835)		+= irq-bcm2836.o
 obj-$(CONFIG_ARCH_ACTIONS)		+= irq-owl-sirq.o
 obj-$(CONFIG_DAVINCI_CP_INTC)		+= irq-davinci-cp-intc.o
 obj-$(CONFIG_EXYNOS_IRQ_COMBINER)	+= exynos-combiner.o
+obj-$(CONFIG_ECONET_EN751221_INTC)	+= irq-econet-en751221.o
 obj-$(CONFIG_FARADAY_FTINTC010)		+= irq-ftintc010.o
 obj-$(CONFIG_ARCH_HIP04)		+= irq-hip04.o
 obj-$(CONFIG_ARCH_LPC32XX)		+= irq-lpc32xx.o

drivers/irqchip/irq-al-fic.c

@@ -65,15 +65,13 @@ static int al_fic_irq_set_type(struct irq_data *data, unsigned int flow_type)
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data);
 	struct al_fic *fic = gc->private;
 	enum al_fic_state new_state;
-	int ret = 0;
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 
 	if (((flow_type & IRQ_TYPE_SENSE_MASK) != IRQ_TYPE_LEVEL_HIGH) &&
 	    ((flow_type & IRQ_TYPE_SENSE_MASK) != IRQ_TYPE_EDGE_RISING)) {
 		pr_debug("fic doesn't support flow type %d\n", flow_type);
-		ret = -EINVAL;
-		goto err;
+		return -EINVAL;
 	}
 
 	new_state = (flow_type & IRQ_TYPE_LEVEL_HIGH) ?
@@ -91,16 +89,10 @@ static int al_fic_irq_set_type(struct irq_data *data, unsigned int flow_type)
 	if (fic->state == AL_FIC_UNCONFIGURED) {
 		al_fic_set_trigger(fic, gc, new_state);
 	} else if (fic->state != new_state) {
-		pr_debug("fic %s state already configured to %d\n",
-			 fic->name, fic->state);
-		ret = -EINVAL;
-		goto err;
+		pr_debug("fic %s state already configured to %d\n", fic->name, fic->state);
+		return -EINVAL;
 	}
-
-err:
-	irq_gc_unlock(gc);
-
-	return ret;
+	return 0;
 }
 
 static void al_fic_irq_handler(struct irq_desc *desc)

drivers/irqchip/irq-atmel-aic.c

@@ -78,9 +78,8 @@ static int aic_retrigger(struct irq_data *d)
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
 
 	/* Enable interrupt on AIC5 */
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	irq_reg_writel(gc, d->mask, AT91_AIC_ISCR);
-	irq_gc_unlock(gc);
 
 	return 1;
 }
@@ -106,30 +105,27 @@ static void aic_suspend(struct irq_data *d)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IDCR);
 	irq_reg_writel(gc, gc->wake_active, AT91_AIC_IECR);
-	irq_gc_unlock(gc);
 }
 
 static void aic_resume(struct irq_data *d)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	irq_reg_writel(gc, gc->wake_active, AT91_AIC_IDCR);
 	irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IECR);
-	irq_gc_unlock(gc);
 }
 
 static void aic_pm_shutdown(struct irq_data *d)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
 
-	irq_gc_lock(gc);
+	guard(raw_spinlock)(&gc->lock);
 	irq_reg_writel(gc, 0xffffffff, AT91_AIC_IDCR);
 	irq_reg_writel(gc, 0xffffffff, AT91_AIC_ICCR);
-	irq_gc_unlock(gc);
 }
 #else
 #define aic_suspend		NULL
@@ -175,10 +171,8 @@ static int aic_irq_domain_xlate(struct irq_domain *d,
 {
 	struct irq_domain_chip_generic *dgc = d->gc;
 	struct irq_chip_generic *gc;
-	unsigned long flags;
 	unsigned smr;
-	int idx;
-	int ret;
+	int idx, ret;
 
 	if (!dgc)
 		return -EINVAL;
@@ -194,11 +188,10 @@ static int aic_irq_domain_xlate(struct irq_domain *d,
 
 	gc = dgc->gc[idx];
 
-	irq_gc_lock_irqsave(gc, flags);
+	guard(raw_spinlock_irq)(&gc->lock);
 	smr = irq_reg_readl(gc, AT91_AIC_SMR(*out_hwirq));
 	aic_common_set_priority(intspec[2], &smr);
 	irq_reg_writel(gc, smr, AT91_AIC_SMR(*out_hwirq));
-	irq_gc_unlock_irqrestore(gc, flags);
 
 	return ret;
 }