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authorArnd Bergmann <arnd@arndb.de>2013-04-09 22:46:16 +0200
committerArnd Bergmann <arnd@arndb.de>2013-04-09 22:46:16 +0200
commit0b8467ee39721340450482e87471ca4c0d6170f3 (patch)
treeefabb381fdec807b3486c9bc8e93950c2d414b1c /drivers/irqchip
parent19ce4f4a03e52bc694dc837a4a832111cb4271b3 (diff)
parentdb35234ec7a7a10145cf472f68e1c73fbd48f79c (diff)
downloadtalos-obmc-linux-0b8467ee39721340450482e87471ca4c0d6170f3.tar.gz
talos-obmc-linux-0b8467ee39721340450482e87471ca4c0d6170f3.zip
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>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/exynos-combiner.c80
1 files changed, 62 insertions, 18 deletions
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);
}
}
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