Merge tag 'pmu-exynos-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers

From Kukjin Kim <kgene.kim@samsung.com>:

add support arm-pmu for exynos4 and exynos5250

* tag 'pmu-exynos-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Add arm-pmu DT binding for exynos421x
  ARM: EXYNOS: Add arm-pmu DT binding for exynos5250
  ARM: EXYNOS: Enable PMUs for exynos4
  irqchip: exynos-combiner: Correct combined IRQs for exynos4
  irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

6 files changed, 113 insertions, 22 deletions

diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
index ff23ae29f5cf..15143bdbafb8 100644
--- a/arch/arm/boot/dts/exynos4210.dtsi
+++ b/arch/arm/boot/dts/exynos4210.dtsi
@@ -77,6 +77,12 @@
                 #clock-cells = <1>;
         };
 
+        pmu {
+                compatible = "arm,cortex-a9-pmu";
+                interrupt-parent = <&combiner>;
+                interrupts = <2 2>, <3 2>;
+        };
+
         pinctrl_0: pinctrl@11400000 {
                 compatible = "samsung,exynos4210-pinctrl";
                 reg = <0x11400000 0x1000>;
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index f8c9964f367c..24c52e681b58 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -109,6 +109,12 @@
                 };
         };
 
+        pmu {
+                compatible = "arm,cortex-a15-pmu";
+                interrupt-parent = <&combiner>;
+                interrupts = <1 2>, <22 4>;
+        };
+
         watchdog {
                 compatible = "samsung,s3c2410-wdt";
                 reg = <0x101D0000 0x100>;
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index d3efd6768ff8..939bda77defa 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -39,6 +39,7 @@
 #include <mach/regs-irq.h>
 #include <mach/regs-pmu.h>
 #include <mach/regs-gpio.h>
+#include <mach/irqs.h>
 
 #include <plat/cpu.h>
 #include <plat/devs.h>
@@ -851,3 +852,30 @@ static int __init exynos_init_irq_eint(void)
         return 0;
 }
 arch_initcall(exynos_init_irq_eint);
+
+static struct resource exynos4_pmu_resource[] = {
+        DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU),
+        DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU1),
+#if defined(CONFIG_SOC_EXYNOS4412)
+        DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU2),
+        DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU3),
+#endif
+};
+
+static struct platform_device exynos4_device_pmu = {
+        .name           = "arm-pmu",
+        .num_resources  = ARRAY_SIZE(exynos4_pmu_resource),
+        .resource       = exynos4_pmu_resource,
+};
+
+static int __init exynos_armpmu_init(void)
+{
+        if (!of_have_populated_dt()) {
+                if (soc_is_exynos4210() || soc_is_exynos4212())
+                        exynos4_device_pmu.num_resources = 2;
+                platform_device_register(&exynos4_device_pmu);
+        }
+
+        return 0;
+}
+arch_initcall(exynos_armpmu_init);
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index c0e75d8dd737..35fe6d52d230 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -126,7 +126,7 @@
 #define EXYNOS4_IRQ_ADC1                IRQ_SPI(107)
 #define EXYNOS4_IRQ_PEN1                IRQ_SPI(108)
 #define EXYNOS4_IRQ_KEYPAD              IRQ_SPI(109)
-#define EXYNOS4_IRQ_PMU                 IRQ_SPI(110)
+#define EXYNOS4_IRQ_POWER_PMU           IRQ_SPI(110)
 #define EXYNOS4_IRQ_GPS                 IRQ_SPI(111)
 #define EXYNOS4_IRQ_INTFEEDCTRL_SSS     IRQ_SPI(112)
 #define EXYNOS4_IRQ_SLIMBUS             IRQ_SPI(113)
@@ -134,6 +134,11 @@
 #define EXYNOS4_IRQ_TSI                 IRQ_SPI(115)
 #define EXYNOS4_IRQ_SATA                IRQ_SPI(116)
 
+#define EXYNOS4_IRQ_PMU                 COMBINER_IRQ(2, 2)
+#define EXYNOS4_IRQ_PMU_CPU1            COMBINER_IRQ(3, 2)
+#define EXYNOS4_IRQ_PMU_CPU2            COMBINER_IRQ(18, 2)
+#define EXYNOS4_IRQ_PMU_CPU3            COMBINER_IRQ(19, 2)
+
 #define EXYNOS4_IRQ_TMU_TRIG0           COMBINER_IRQ(2, 4)
 #define EXYNOS4_IRQ_TMU_TRIG1           COMBINER_IRQ(3, 4)
 
@@ -166,7 +171,10 @@
 #define EXYNOS4_IRQ_FIMD0_VSYNC         COMBINER_IRQ(11, 1)
 #define EXYNOS4_IRQ_FIMD0_SYSTEM        COMBINER_IRQ(11, 2)
 
-#define EXYNOS4_MAX_COMBINER_NR         16
+#define EXYNOS4210_MAX_COMBINER_NR      16
+#define EXYNOS4212_MAX_COMBINER_NR      18
+#define EXYNOS4412_MAX_COMBINER_NR      20
+#define EXYNOS4_MAX_COMBINER_NR         EXYNOS4412_MAX_COMBINER_NR
 
 #define EXYNOS4_IRQ_GPIO1_NR_GROUPS     16
 #define EXYNOS4_IRQ_GPIO2_NR_GROUPS     9
@@ -231,7 +239,6 @@
 #define IRQ_TC                          EXYNOS4_IRQ_PEN0
 
 #define IRQ_KEYPAD                      EXYNOS4_IRQ_KEYPAD
-#define IRQ_PMU                         EXYNOS4_IRQ_PMU
 
 #define IRQ_FIMD0_FIFO                  EXYNOS4_IRQ_FIMD0_FIFO
 #define IRQ_FIMD0_VSYNC                 EXYNOS4_IRQ_FIMD0_VSYNC
diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c
index 51afedda9ab6..e1124d9fd2b0 100644
--- a/arch/arm/plat-samsung/devs.c
+++ b/arch/arm/plat-samsung/devs.c
@@ -1113,7 +1113,7 @@ struct platform_device s5p_device_onenand = {
 
 /* PMU */
 
-#ifdef CONFIG_PLAT_S5P
+#if defined(CONFIG_PLAT_S5P) && !defined(CONFIG_ARCH_EXYNOS)
 static struct resource s5p_pmu_resource[] = {
         DEFINE_RES_IRQ(IRQ_PMU)
 };
diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index 04d86a9803f4..e8501dbaa0b7 100644
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -31,6 +31,7 @@ struct combiner_chip_data {
         unsigned int irq_offset;
         unsigned int irq_mask;
         void __iomem *base;
+        unsigned int parent_irq;
 };
 
 static struct irq_domain *combiner_irq_domain;
@@ -87,22 +88,46 @@ static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
         chained_irq_exit(chip, desc);
 }
 
+#ifdef CONFIG_SMP
+static int combiner_set_affinity(struct irq_data *d,
+                                 const struct cpumask *mask_val, bool force)
+{
+        struct combiner_chip_data *chip_data = irq_data_get_irq_chip_data(d);
+        struct irq_chip *chip = irq_get_chip(chip_data->parent_irq);
+        struct irq_data *data = irq_get_irq_data(chip_data->parent_irq);
+
+        if (chip && chip->irq_set_affinity)
+                return chip->irq_set_affinity(data, mask_val, force);
+        else
+                return -EINVAL;
+}
+#endif
+
 static struct irq_chip combiner_chip = {
-        .name           = "COMBINER",
-        .irq_mask       = combiner_mask_irq,
-        .irq_unmask     = combiner_unmask_irq,
+        .name                   = "COMBINER",
+        .irq_mask               = combiner_mask_irq,
+        .irq_unmask             = combiner_unmask_irq,
+#ifdef CONFIG_SMP
+        .irq_set_affinity       = combiner_set_affinity,
+#endif
 };
 
-static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq)
+static unsigned int max_combiner_nr(void)
 {
-        unsigned int max_nr;
-
         if (soc_is_exynos5250())
-                max_nr = EXYNOS5_MAX_COMBINER_NR;
+                return EXYNOS5_MAX_COMBINER_NR;
+        else if (soc_is_exynos4412())
+                return EXYNOS4412_MAX_COMBINER_NR;
+        else if (soc_is_exynos4212())
+                return EXYNOS4212_MAX_COMBINER_NR;
         else
-                max_nr = EXYNOS4_MAX_COMBINER_NR;
+                return EXYNOS4210_MAX_COMBINER_NR;
+}
 
-        if (combiner_nr >= max_nr)
+static void __init combiner_cascade_irq(unsigned int combiner_nr,
+                                        unsigned int irq)
+{
+        if (combiner_nr >= max_combiner_nr())
                 BUG();
         if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0)
                 BUG();
@@ -110,12 +135,13 @@ static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int i
 }
 
 static void __init combiner_init_one(unsigned int combiner_nr,
-                                     void __iomem *base)
+                                     void __iomem *base, unsigned int irq)
 {
         combiner_data[combiner_nr].base = base;
         combiner_data[combiner_nr].irq_offset = irq_find_mapping(
                 combiner_irq_domain, combiner_nr * MAX_IRQ_IN_COMBINER);
         combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
+        combiner_data[combiner_nr].parent_irq = irq;
 
         /* Disable all interrupts */
         __raw_writel(combiner_data[combiner_nr].irq_mask,
@@ -166,23 +192,38 @@ static struct irq_domain_ops combiner_irq_domain_ops = {
         .map    = combiner_irq_domain_map,
 };
 
+static unsigned int exynos4x12_combiner_extra_irq(int group)
+{
+        switch (group) {
+        case 16:
+                return IRQ_SPI(107);
+        case 17:
+                return IRQ_SPI(108);
+        case 18:
+                return IRQ_SPI(48);
+        case 19:
+                return IRQ_SPI(42);
+        default:
+                return 0;
+        }
+}
+
 void __init combiner_init(void __iomem *combiner_base,
                           struct device_node *np)
 {
         int i, irq, irq_base;
         unsigned int max_nr, nr_irq;
 
+        max_nr = max_combiner_nr();
+
         if (np) {
                 if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) {
-                        pr_warning("%s: number of combiners not specified, "
+                        pr_info("%s: number of combiners not specified, "
                                 "setting default as %d.\n",
-                                __func__, EXYNOS4_MAX_COMBINER_NR);
-                        max_nr = EXYNOS4_MAX_COMBINER_NR;
+                                __func__, max_nr);
                 }
-        } else {
-                max_nr = soc_is_exynos5250() ? EXYNOS5_MAX_COMBINER_NR :
-                                                EXYNOS4_MAX_COMBINER_NR;
         }
+
         nr_irq = max_nr * MAX_IRQ_IN_COMBINER;
 
         irq_base = irq_alloc_descs(COMBINER_IRQ(0, 0), 1, nr_irq, 0);
@@ -199,12 +240,15 @@ void __init combiner_init(void __iomem *combiner_base,
         }
 
         for (i = 0; i < max_nr; i++) {
-                combiner_init_one(i, combiner_base + (i >> 2) * 0x10);
-                irq = IRQ_SPI(i);
+                if (i < EXYNOS4210_MAX_COMBINER_NR || soc_is_exynos5250())
+                        irq = IRQ_SPI(i);
+                else
+                        irq = exynos4x12_combiner_extra_irq(i);
 #ifdef CONFIG_OF
                 if (np)
                         irq = irq_of_parse_and_map(np, i);
 #endif
+                combiner_init_one(i, combiner_base + (i >> 2) * 0x10, irq);
                 combiner_cascade_irq(i, irq);
         }
 }