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authorThomas Abraham2013-03-09 16:01:50 +0900
committerKukjin Kim2013-03-09 16:01:50 +0900
commitc371dc60aebf7ada4d5b4585ea8f46a3a06f8f04 (patch)
tree87b6eb33bee2c6a323bc1984a0d81d71c30b8703 /arch/arm
parenta1ba7a7a929fca888fd119d1d8f5ed0291b7e61b (diff)
ARM: EXYNOS: prepare an array of MCT interrupt numbers and use it
Instead of using soc_is_xxx macro at more than one place in the MCT controller driver to decide the MCT interrpt number to be setup, populate a table of known MCT global and local timer interrupts and use the values in table to setup the MCT interrupts. This also helps in adding device tree support for MCT controller driver by allowing the driver to retrieve interrupt numbers from device tree and populating them into this table, thereby supporting both legacy and dt functionality to co-exist. Cc: Changhwan Youn <chaos.youn@samsung.com> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-exynos/mct.c57
1 files changed, 36 insertions, 21 deletions
diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c
index ffd1323ed7db..1061db4118aa 100644
--- a/arch/arm/mach-exynos/mct.c
+++ b/arch/arm/mach-exynos/mct.c
@@ -65,9 +65,22 @@ enum {
MCT_INT_PPI
};
+enum {
+ MCT_G0_IRQ,
+ MCT_G1_IRQ,
+ MCT_G2_IRQ,
+ MCT_G3_IRQ,
+ MCT_L0_IRQ,
+ MCT_L1_IRQ,
+ MCT_L2_IRQ,
+ MCT_L3_IRQ,
+ MCT_NR_IRQS,
+};
+
static void __iomem *reg_base;
static unsigned long clk_rate;
static unsigned int mct_int_type;
+static int mct_irqs[MCT_NR_IRQS];
struct mct_clock_event_device {
struct clock_event_device *evt;
@@ -282,11 +295,7 @@ static void exynos4_clockevent_init(void)
mct_comp_device.cpumask = cpumask_of(0);
clockevents_config_and_register(&mct_comp_device, clk_rate,
0xf, 0xffffffff);
-
- if (soc_is_exynos5250())
- setup_irq(EXYNOS5_IRQ_MCT_G0, &mct_comp_event_irq);
- else
- setup_irq(EXYNOS4_IRQ_MCT_G0, &mct_comp_event_irq);
+ setup_irq(mct_irqs[MCT_G0_IRQ], &mct_comp_event_irq);
}
#ifdef CONFIG_LOCAL_TIMERS
@@ -410,7 +419,6 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
{
struct mct_clock_event_device *mevt;
unsigned int cpu = smp_processor_id();
- int mct_lx_irq;
mevt = this_cpu_ptr(&percpu_mct_tick);
mevt->evt = evt;
@@ -431,21 +439,17 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
if (mct_int_type == MCT_INT_SPI) {
if (cpu == 0) {
- mct_lx_irq = soc_is_exynos4210() ? EXYNOS4_IRQ_MCT_L0 :
- EXYNOS5_IRQ_MCT_L0;
mct_tick0_event_irq.dev_id = mevt;
- evt->irq = mct_lx_irq;
- setup_irq(mct_lx_irq, &mct_tick0_event_irq);
+ evt->irq = mct_irqs[MCT_L0_IRQ];
+ setup_irq(evt->irq, &mct_tick0_event_irq);
} else {
- mct_lx_irq = soc_is_exynos4210() ? EXYNOS4_IRQ_MCT_L1 :
- EXYNOS5_IRQ_MCT_L1;
mct_tick1_event_irq.dev_id = mevt;
- evt->irq = mct_lx_irq;
- setup_irq(mct_lx_irq, &mct_tick1_event_irq);
- irq_set_affinity(mct_lx_irq, cpumask_of(1));
+ evt->irq = mct_irqs[MCT_L1_IRQ];
+ setup_irq(evt->irq, &mct_tick1_event_irq);
+ irq_set_affinity(evt->irq, cpumask_of(1));
}
} else {
- enable_percpu_irq(EXYNOS_IRQ_MCT_LOCALTIMER, 0);
+ enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0);
}
return 0;
@@ -461,7 +465,7 @@ static void exynos4_local_timer_stop(struct clock_event_device *evt)
else
remove_irq(evt->irq, &mct_tick1_event_irq);
else
- disable_percpu_irq(EXYNOS_IRQ_MCT_LOCALTIMER);
+ disable_percpu_irq(mct_irqs[MCT_L0_IRQ]);
}
static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = {
@@ -483,11 +487,11 @@ static void __init exynos4_timer_resources(void)
if (mct_int_type == MCT_INT_PPI) {
int err;
- err = request_percpu_irq(EXYNOS_IRQ_MCT_LOCALTIMER,
+ err = request_percpu_irq(mct_irqs[MCT_L0_IRQ],
exynos4_mct_tick_isr, "MCT",
&percpu_mct_tick);
WARN(err, "MCT: can't request IRQ %d (%d)\n",
- EXYNOS_IRQ_MCT_LOCALTIMER, err);
+ mct_irqs[MCT_L0_IRQ], err);
}
local_timer_register(&exynos4_mct_tick_ops);
@@ -501,10 +505,21 @@ void __init exynos4_timer_init(void)
return;
}
- if ((soc_is_exynos4210()) || (soc_is_exynos5250()))
+ if (soc_is_exynos4210()) {
+ mct_irqs[MCT_G0_IRQ] = EXYNOS4_IRQ_MCT_G0;
+ mct_irqs[MCT_L0_IRQ] = EXYNOS4_IRQ_MCT_L0;
+ mct_irqs[MCT_L1_IRQ] = EXYNOS4_IRQ_MCT_L1;
mct_int_type = MCT_INT_SPI;
- else
+ } else if (soc_is_exynos5250()) {
+ mct_irqs[MCT_G0_IRQ] = EXYNOS5_IRQ_MCT_G0;
+ mct_irqs[MCT_L0_IRQ] = EXYNOS5_IRQ_MCT_L0;
+ mct_irqs[MCT_L1_IRQ] = EXYNOS5_IRQ_MCT_L1;
+ mct_int_type = MCT_INT_SPI;
+ } else {
+ mct_irqs[MCT_G0_IRQ] = EXYNOS4_IRQ_MCT_G0;
+ mct_irqs[MCT_L0_IRQ] = EXYNOS_IRQ_MCT_LOCALTIMER;
mct_int_type = MCT_INT_PPI;
+ }
exynos4_timer_resources();
exynos4_clocksource_init();