Merge tag 'irq' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc sparse IRQ conversion from Arnd Bergmann:
 "The I.MX platform is getting converted to use sparse IRQs.  We are
  doing this for all platforms over time, because this is one of the
  requirements for building a multiplatform kernel, and generally a good
  idea."

* tag 'irq' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: imx: select USE_OF
  ARM: imx: Fix build error due to missing irqs.h include
  ARM: imx: enable SPARSE_IRQ for imx platform
  ARM: fiq: change FIQ_START to a variable
  tty: serial: imx: remove the use of MXC_INTERNAL_IRQS
  ARM: imx: remove unneeded mach/irq.h inclusion
  i2c: imx: remove unneeded mach/irqs.h inclusion
  ARM: imx: add a legacy irqdomain for mx31ads
  ARM: imx: add a legacy irqdomain for 3ds_debugboard
  ARM: imx: pass gpio than irq number into mxc_expio_init
  ARM: imx: leave irq_base of wm8350_platform_data uninitialized
  dma: ipu: remove the use of ipu_platform_data
  ARM: imx: move irq_domain_add_legacy call into avic driver
  ARM: imx: move irq_domain_add_legacy call into tzic driver
  gpio/mxc: move irq_domain_add_legacy call into gpio driver
  ARM: imx: eliminate macro IRQ_GPIOx()
  ARM: imx: eliminate macro IOMUX_TO_IRQ()
  ARM: imx: eliminate macro IMX_GPIO_TO_IRQ()

1 files changed, 21 insertions, 9 deletions

diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c
index 98308ec1f321..c60a7e416385 100644
--- a/arch/arm/plat-mxc/tzic.c
+++ b/arch/arm/plat-mxc/tzic.c
@@ -15,6 +15,8 @@
 #include <linux/device.h>
 #include <linux/errno.h>
 #include <linux/io.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
 
 #include <asm/mach/irq.h>
 #include <asm/exception.h>
@@ -49,6 +51,7 @@
 #define TZIC_ID0	0x0FD0	/* Indentification Register 0 */
 
 void __iomem *tzic_base; /* Used as irq controller base in entry-macro.S */
+static struct irq_domain *domain;
 
 #define TZIC_NUM_IRQS 128
 
@@ -77,15 +80,14 @@ static int tzic_set_irq_fiq(unsigned int irq, unsigned int type)
 static void tzic_irq_suspend(struct irq_data *d)
 {
 	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
-	int idx = gc->irq_base >> 5;
+	int idx = d->hwirq >> 5;
 
 	__raw_writel(gc->wake_active, tzic_base + TZIC_WAKEUP0(idx));
 }
 
 static void tzic_irq_resume(struct irq_data *d)
 {
-	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
-	int idx = gc->irq_base >> 5;
+	int idx = d->hwirq >> 5;
 
 	__raw_writel(__raw_readl(tzic_base + TZIC_ENSET0(idx)),
 		     tzic_base + TZIC_WAKEUP0(idx));
@@ -102,11 +104,10 @@ static struct mxc_extra_irq tzic_extra_irq = {
 #endif
 };
 
-static __init void tzic_init_gc(unsigned int irq_start)
+static __init void tzic_init_gc(int idx, unsigned int irq_start)
 {
 	struct irq_chip_generic *gc;
 	struct irq_chip_type *ct;
-	int idx = irq_start >> 5;
 
 	gc = irq_alloc_generic_chip("tzic", 1, irq_start, tzic_base,
 				    handle_level_irq);
@@ -140,7 +141,8 @@ asmlinkage void __exception_irq_entry tzic_handle_irq(struct pt_regs *regs)
 			while (stat) {
 				handled = 1;
 				irqofs = fls(stat) - 1;
-				handle_IRQ(irqofs + i * 32, regs);
+				handle_IRQ(irq_find_mapping(domain,
+						irqofs + i * 32), regs);
 				stat &= ~(1 << irqofs);
 			}
 		}
@@ -154,6 +156,8 @@ asmlinkage void __exception_irq_entry tzic_handle_irq(struct pt_regs *regs)
  */
 void __init tzic_init_irq(void __iomem *irqbase)
 {
+	struct device_node *np;
+	int irq_base;
 	int i;
 
 	tzic_base = irqbase;
@@ -175,12 +179,20 @@ void __init tzic_init_irq(void __iomem *irqbase)
 
 	/* all IRQ no FIQ Warning :: No selection */
 
-	for (i = 0; i < TZIC_NUM_IRQS; i += 32)
-		tzic_init_gc(i);
+	irq_base = irq_alloc_descs(-1, 0, TZIC_NUM_IRQS, numa_node_id());
+	WARN_ON(irq_base < 0);
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,tzic");
+	domain = irq_domain_add_legacy(np, TZIC_NUM_IRQS, irq_base, 0,
+				       &irq_domain_simple_ops, NULL);
+	WARN_ON(!domain);
+
+	for (i = 0; i < 4; i++, irq_base += 32)
+		tzic_init_gc(i, irq_base);
 
 #ifdef CONFIG_FIQ
 	/* Initialize FIQ */
-	init_FIQ();
+	init_FIQ(FIQ_START);
 #endif
 
 	pr_info("TrustZone Interrupt Controller (TZIC) initialized\n");