[PATCH v2 10/12] clocksource: samsung-time: Move IRQ mask/ack handling to the driver
Tomasz Figa
tomasz.figa at gmail.com
Sat Feb 16 11:44:02 EST 2013
Since the clocksource driver is the only user of PWM timer interrupts,
there is no need to create an IRQ chip for handling them.
This patch the way of PWM timer interrupt handling to use real VIC/GIC
interrupt signals and handle PWM mask/ack register internally in
samsung-time driver.
Signed-off-by: Tomasz Figa <tomasz.figa at gmail.com>
---
arch/arm/mach-exynos/include/mach/irqs.h | 3 +--
arch/arm/mach-exynos/mach-universal_c210.c | 5 +++--
arch/arm/mach-s3c24xx/common.c | 1 +
arch/arm/mach-s3c64xx/common.c | 8 +++-----
arch/arm/mach-s3c64xx/include/mach/irqs.h | 8 --------
arch/arm/mach-s5p64x0/common.c | 5 +++--
arch/arm/mach-s5p64x0/include/mach/irqs.h | 2 --
arch/arm/mach-s5pc100/common.c | 5 +++--
arch/arm/mach-s5pc100/include/mach/irqs.h | 2 --
arch/arm/mach-s5pv210/common.c | 5 +++--
arch/arm/mach-s5pv210/include/mach/irqs.h | 2 --
arch/arm/plat-samsung/include/plat/irqs.h | 9 ---------
arch/arm/plat-samsung/s5p-irq.c | 2 --
drivers/clocksource/samsung-time.c | 10 ++++++++++
include/clocksource/samsung-time.h | 2 ++
15 files changed, 29 insertions(+), 40 deletions(-)
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index 6794292..98c97be 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -470,10 +470,9 @@
#define S5P_EINT_BASE2 (S5P_EINT_BASE1 + 16)
#define S5P_GPIOINT_BASE (S5P_EINT_BASE1 + 32)
#define IRQ_GPIO_END (S5P_GPIOINT_BASE + S5P_GPIOINT_COUNT)
-#define IRQ_TIMER_BASE (IRQ_GPIO_END + 64)
/* Set the default NR_IRQS */
-#define NR_IRQS (IRQ_TIMER_BASE + IRQ_TIMER_COUNT)
+#define NR_IRQS (IRQ_GPIO_END + 64)
#endif /* __ASM_ARCH_IRQS_H */
diff --git a/arch/arm/mach-exynos/mach-universal_c210.c b/arch/arm/mach-exynos/mach-universal_c210.c
index 2efd543f..71c4a53 100644
--- a/arch/arm/mach-exynos/mach-universal_c210.c
+++ b/arch/arm/mach-exynos/mach-universal_c210.c
@@ -1093,12 +1093,13 @@ static struct platform_device *universal_devices[] __initdata = {
static const struct samsung_timer_variant universal_timer_variant = {
.reg_base = EXYNOS4_PA_TIMER,
.irqs = {
- IRQ_TIMER0, IRQ_TIMER1, IRQ_TIMER2,
- IRQ_TIMER3, IRQ_TIMER4
+ IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC,
+ IRQ_TIMER3_VIC, IRQ_TIMER4_VIC
},
.bits = 32,
.prescale = 2,
.divisor = 2,
+ .has_tint_cstat = true,
};
static void __init universal_map_io(void)
diff --git a/arch/arm/mach-s3c24xx/common.c b/arch/arm/mach-s3c24xx/common.c
index b152c59..705279b 100644
--- a/arch/arm/mach-s3c24xx/common.c
+++ b/arch/arm/mach-s3c24xx/common.c
@@ -228,6 +228,7 @@ static const struct samsung_timer_variant s3c24xx_timer_variant = {
.bits = 16,
.prescale = 25,
.divisor = 50,
+ .has_tint_cstat = false,
};
void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
diff --git a/arch/arm/mach-s3c64xx/common.c b/arch/arm/mach-s3c64xx/common.c
index 5245d8a..ce1b1da 100644
--- a/arch/arm/mach-s3c64xx/common.c
+++ b/arch/arm/mach-s3c64xx/common.c
@@ -152,12 +152,13 @@ static struct device s3c64xx_dev = {
static const struct samsung_timer_variant s3c64xx_timer_variant = {
.reg_base = S3C_PA_TIMER,
.irqs = {
- IRQ_TIMER0, IRQ_TIMER1, IRQ_TIMER2,
- IRQ_TIMER3, IRQ_TIMER4
+ IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC,
+ IRQ_TIMER3_VIC, IRQ_TIMER4_VIC
},
.bits = 32,
.prescale = 2,
.divisor = 2,
+ .has_tint_cstat = true,
};
/* read cpu identification code */
@@ -202,9 +203,6 @@ void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
/* initialise the pair of VICs */
vic_init(VA_VIC0, IRQ_VIC0_BASE, vic0_valid, IRQ_VIC0_RESUME);
vic_init(VA_VIC1, IRQ_VIC1_BASE, vic1_valid, IRQ_VIC1_RESUME);
-
- /* add the timer sub-irqs */
- s3c_init_vic_timer_irq(5, IRQ_TIMER0);
}
#define eint_offset(irq) ((irq) - IRQ_EINT(0))
diff --git a/arch/arm/mach-s3c64xx/include/mach/irqs.h b/arch/arm/mach-s3c64xx/include/mach/irqs.h
index 96d60e0..67bbd1d 100644
--- a/arch/arm/mach-s3c64xx/include/mach/irqs.h
+++ b/arch/arm/mach-s3c64xx/include/mach/irqs.h
@@ -107,14 +107,6 @@
#define IRQ_TC IRQ_PENDN
#define IRQ_ADC S3C64XX_IRQ_VIC1(31)
-#define S3C64XX_TIMER_IRQ(x) S3C_IRQ(64 + (x))
-
-#define IRQ_TIMER0 S3C64XX_TIMER_IRQ(0)
-#define IRQ_TIMER1 S3C64XX_TIMER_IRQ(1)
-#define IRQ_TIMER2 S3C64XX_TIMER_IRQ(2)
-#define IRQ_TIMER3 S3C64XX_TIMER_IRQ(3)
-#define IRQ_TIMER4 S3C64XX_TIMER_IRQ(4)
-
/* compatibility for device defines */
#define IRQ_IIC1 IRQ_S3C6410_IIC1
diff --git a/arch/arm/mach-s5p64x0/common.c b/arch/arm/mach-s5p64x0/common.c
index 583ff13..6925136 100644
--- a/arch/arm/mach-s5p64x0/common.c
+++ b/arch/arm/mach-s5p64x0/common.c
@@ -160,12 +160,13 @@ static void s5p64x0_idle(void)
static const struct samsung_timer_variant s5p64x0_timer_variant = {
.reg_base = S5P_PA_TIMER,
.irqs = {
- IRQ_TIMER0, IRQ_TIMER1, IRQ_TIMER2,
- IRQ_TIMER3, IRQ_TIMER4
+ IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC,
+ IRQ_TIMER3_VIC, IRQ_TIMER4_VIC
},
.bits = 32,
.prescale = 2,
.divisor = 2,
+ .has_tint_cstat = true,
};
/*
diff --git a/arch/arm/mach-s5p64x0/include/mach/irqs.h b/arch/arm/mach-s5p64x0/include/mach/irqs.h
index 5b845e8..53982db 100644
--- a/arch/arm/mach-s5p64x0/include/mach/irqs.h
+++ b/arch/arm/mach-s5p64x0/include/mach/irqs.h
@@ -141,8 +141,6 @@
#define IRQ_EINT_GROUP(grp, x) (IRQ_EINT_GROUP##grp##_BASE + (x))
-#define IRQ_TIMER_BASE (11)
-
/* Set the default NR_IRQS */
#define NR_IRQS (IRQ_EINT_GROUP8_BASE + IRQ_EINT_GROUP8_NR + 1)
diff --git a/arch/arm/mach-s5pc100/common.c b/arch/arm/mach-s5pc100/common.c
index 8c79d48..0f1cbaa 100644
--- a/arch/arm/mach-s5pc100/common.c
+++ b/arch/arm/mach-s5pc100/common.c
@@ -135,12 +135,13 @@ static struct map_desc s5pc100_iodesc[] __initdata = {
static const struct samsung_timer_variant s5pc100_timer_variant = {
.reg_base = S5P_PA_TIMER,
.irqs = {
- IRQ_TIMER0, IRQ_TIMER1, IRQ_TIMER2,
- IRQ_TIMER3, IRQ_TIMER4
+ IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC,
+ IRQ_TIMER3_VIC, IRQ_TIMER4_VIC
},
.bits = 32,
.prescale = 2,
.divisor = 2,
+ .has_tint_cstat = true,
};
/*
diff --git a/arch/arm/mach-s5pc100/include/mach/irqs.h b/arch/arm/mach-s5pc100/include/mach/irqs.h
index 2870f12..d2eb475 100644
--- a/arch/arm/mach-s5pc100/include/mach/irqs.h
+++ b/arch/arm/mach-s5pc100/include/mach/irqs.h
@@ -97,8 +97,6 @@
#define IRQ_SDMFIQ S5P_IRQ_VIC2(31)
#define IRQ_VIC_END S5P_IRQ_VIC2(31)
-#define IRQ_TIMER_BASE (11)
-
#define S5P_EINT_BASE1 (S5P_IRQ_VIC0(0))
#define S5P_EINT_BASE2 (IRQ_VIC_END + 1)
diff --git a/arch/arm/mach-s5pv210/common.c b/arch/arm/mach-s5pv210/common.c
index 34fc77e..d5bf1e2 100644
--- a/arch/arm/mach-s5pv210/common.c
+++ b/arch/arm/mach-s5pv210/common.c
@@ -152,12 +152,13 @@ void s5pv210_restart(char mode, const char *cmd)
static const struct samsung_timer_variant s5pv210_timer_variant = {
.reg_base = S5P_PA_TIMER,
.irqs = {
- IRQ_TIMER0, IRQ_TIMER1, IRQ_TIMER2,
- IRQ_TIMER3, IRQ_TIMER4
+ IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC,
+ IRQ_TIMER3_VIC, IRQ_TIMER4_VIC
},
.bits = 32,
.prescale = 2,
.divisor = 2,
+ .has_tint_cstat = true,
};
/*
diff --git a/arch/arm/mach-s5pv210/include/mach/irqs.h b/arch/arm/mach-s5pv210/include/mach/irqs.h
index e777e01..5e0de3a 100644
--- a/arch/arm/mach-s5pv210/include/mach/irqs.h
+++ b/arch/arm/mach-s5pv210/include/mach/irqs.h
@@ -118,8 +118,6 @@
#define IRQ_MDNIE3 S5P_IRQ_VIC3(8)
#define IRQ_VIC_END S5P_IRQ_VIC3(31)
-#define IRQ_TIMER_BASE (11)
-
#define S5P_EINT_BASE1 (S5P_IRQ_VIC0(0))
#define S5P_EINT_BASE2 (IRQ_VIC_END + 1)
diff --git a/arch/arm/plat-samsung/include/plat/irqs.h b/arch/arm/plat-samsung/include/plat/irqs.h
index df46b77..039001c 100644
--- a/arch/arm/plat-samsung/include/plat/irqs.h
+++ b/arch/arm/plat-samsung/include/plat/irqs.h
@@ -44,15 +44,6 @@
#define S5P_IRQ_VIC2(x) (S5P_VIC2_BASE + (x))
#define S5P_IRQ_VIC3(x) (S5P_VIC3_BASE + (x))
-#define S5P_TIMER_IRQ(x) (IRQ_TIMER_BASE + (x))
-
-#define IRQ_TIMER0 S5P_TIMER_IRQ(0)
-#define IRQ_TIMER1 S5P_TIMER_IRQ(1)
-#define IRQ_TIMER2 S5P_TIMER_IRQ(2)
-#define IRQ_TIMER3 S5P_TIMER_IRQ(3)
-#define IRQ_TIMER4 S5P_TIMER_IRQ(4)
-#define IRQ_TIMER_COUNT (5)
-
#define IRQ_EINT(x) ((x) < 16 ? ((x) + S5P_EINT_BASE1) \
: ((x) - 16 + S5P_EINT_BASE2))
diff --git a/arch/arm/plat-samsung/s5p-irq.c b/arch/arm/plat-samsung/s5p-irq.c
index dfb47d6..a14d8e9 100644
--- a/arch/arm/plat-samsung/s5p-irq.c
+++ b/arch/arm/plat-samsung/s5p-irq.c
@@ -30,6 +30,4 @@ void __init s5p_init_irq(u32 *vic, u32 num_vic)
for (irq = 0; irq < num_vic; irq++)
vic_init(VA_VIC(irq), VIC_BASE(irq), vic[irq], 0);
#endif
-
- s3c_init_vic_timer_irq(5, IRQ_TIMER0);
}
diff --git a/drivers/clocksource/samsung-time.c b/drivers/clocksource/samsung-time.c
index 7103ea1..4134811 100644
--- a/drivers/clocksource/samsung-time.c
+++ b/drivers/clocksource/samsung-time.c
@@ -356,6 +356,11 @@ static irqreturn_t samsung_clock_event_isr(int irq, void *dev_id)
{
struct clock_event_device *evt = dev_id;
+ if (timer_variant.has_tint_cstat) {
+ u32 mask = (1 << timer_source.event_id);
+ writel(mask | (mask << 5), S3C64XX_TINT_CSTAT);
+ }
+
evt->event_handler(evt);
return IRQ_HANDLED;
@@ -391,6 +396,11 @@ static void __init samsung_clockevent_init(void)
irq_number = timer_variant.irqs[timer_source.event_id];
setup_irq(irq_number, &samsung_clock_event_irq);
+
+ if (timer_variant.has_tint_cstat) {
+ u32 mask = (1 << timer_source.event_id);
+ writel(mask | (mask << 5), S3C64XX_TINT_CSTAT);
+ }
}
static void __iomem *samsung_timer_reg(void)
diff --git a/include/clocksource/samsung-time.h b/include/clocksource/samsung-time.h
index 48be3a4..e93cf46 100644
--- a/include/clocksource/samsung-time.h
+++ b/include/clocksource/samsung-time.h
@@ -36,6 +36,7 @@ struct samsung_timer_source {
* @bits: bit width of time counters
* @prescale: prescaler divisor
* @divisor: resulting divisor after prescaler and main divisor
+ * @has_tint_cstat: true if variant has TINT_CSTAT register
*/
struct samsung_timer_variant {
unsigned long reg_base;
@@ -43,6 +44,7 @@ struct samsung_timer_variant {
int bits;
u16 prescale;
u16 divisor;
+ bool has_tint_cstat;
};
extern void __init samsung_set_timer_source(enum samsung_timer_mode event,
--
1.8.1.2
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