irqchip: exynos-combiner: Correct combined IRQs for exynos4

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / irqchip / exynos-combiner.c

diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c
index b5ff271..e8501db 100644 (file)
--- a/drivers/irqchip/exynos-combiner.c
+++ b/drivers/irqchip/exynos-combiner.c
@@ -112,16 +112,22 @@ static struct irq_chip combiner_chip = {
 #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();
@@ -186,23 +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);
@@ -219,7 +240,10 @@ void __init combiner_init(void __iomem *combiner_base,
        }
 
        for (i = 0; i < max_nr; i++) {
-               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);