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irqchip: exynos: pass irq_base from platform 

The platform code knows the IRQ base, while the irqchip driver
should really not. This is a littly hacky because we still
hardwire the IRQ base to 160 for the combiner in the DT case,
when we should really use -1. Removing that line will cause
a linear IRQ domain to be use, as we should.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Arnd Bergmann 2013-04-12 15:27:09 +02:00
parent 92c8e49620
commit 863a08dc8b
3 changed files with 16 additions and 12 deletions
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3
arch/arm/mach-exynos/common.c
View File

@ -447,7 +447,8 @@ void __init exynos4_init_irq(void)
#endif
if (!of_have_populated_dt())
combiner_init(S5P_VA_COMBINER_BASE, NULL, max_combiner_nr());
combiner_init(S5P_VA_COMBINER_BASE, NULL,
max_combiner_nr(), COMBINER_IRQ(0, 0));
/*
* The parameters of s5p_init_irq() are for VIC init.

2
arch/arm/mach-exynos/common.h
View File

@ -70,7 +70,7 @@ void exynos4212_register_clocks(void);
struct device_node;
void combiner_init(void __iomem *combiner_base, struct device_node *np,
unsigned int max_nr);
unsigned int max_nr, int irq_base);
extern struct smp_operations exynos_smp_ops;

23
drivers/irqchip/exynos-combiner.c
View File

@ -206,27 +206,22 @@ static unsigned int combiner_lookup_irq(int group)
void __init combiner_init(void __iomem *combiner_base,
struct device_node *np,
unsigned int max_nr)
unsigned int max_nr,
int irq_base)
{
int i, irq, irq_base;
int i, irq;
unsigned int nr_irq;
struct combiner_chip_data *combiner_data;
nr_irq = max_nr * IRQ_IN_COMBINER;
irq_base = irq_alloc_descs(COMBINER_IRQ(0, 0), 1, nr_irq, 0);
if (IS_ERR_VALUE(irq_base)) {
irq_base = COMBINER_IRQ(0, 0);
pr_warning("%s: irq desc alloc failed. Continuing with %d as linux irq base\n", __func__, irq_base);
}
combiner_data = kcalloc(max_nr, sizeof (*combiner_data), GFP_KERNEL);
if (!combiner_data) {
pr_warning("%s: could not allocate combiner data\n", __func__);
return;
}
combiner_irq_domain = irq_domain_add_legacy(np, nr_irq, irq_base, 0,
combiner_irq_domain = irq_domain_add_simple(np, nr_irq, irq_base,
&combiner_irq_domain_ops, combiner_data);
if (WARN_ON(!combiner_irq_domain)) {
pr_warning("%s: irq domain init failed\n", __func__);
@ -253,6 +248,7 @@ static int __init combiner_of_init(struct device_node *np,
{
void __iomem *combiner_base;
unsigned int max_nr = 20;
int irq_base = -1;
combiner_base = of_iomap(np, 0);
if (!combiner_base) {
@ -266,7 +262,14 @@ static int __init combiner_of_init(struct device_node *np,
__func__, max_nr);
}
combiner_init(combiner_base, np, max_nr);
/*
* FIXME: This is a hardwired COMBINER_IRQ(0,0). Once all devices
* get their IRQ from DT, remove this in order to get dynamic
* allocation.
*/
irq_base = 160;
combiner_init(combiner_base, np, max_nr, irq_base);
return 0;
}