[PATCH] ARM: S5P: Fix the platform external interrupt issues.
Kukjin Kim
kgene.kim at samsung.com
Mon May 24 03:44:23 EDT 2010
From: Pannaga Bhushan <p.bhushan at samsung.com>
This patch does the following:
1. Corrects the common platform code for external interrupts for using the
VIC mask/unmask bits also.
2. Moves the common defines related to external interrupt for plat-s5p
to common files.
3. Based on the new common defines, corresponding changes are made in the
affected platforms (S5P6440, S5P6442 and S5PC100).
Signed-off-by: Pannaga Bhushan <p.bhushan at samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim at samsung.com>
---
arch/arm/mach-s5p6440/include/mach/irqs.h | 9 ++++++++-
arch/arm/mach-s5p6442/include/mach/irqs.h | 5 +++--
arch/arm/mach-s5pc100/include/mach/irqs.h | 3 ---
arch/arm/mach-s5pv210/include/mach/irqs.h | 14 ++------------
arch/arm/mach-s5pv210/include/mach/regs-gpio.h | 14 +++++++++-----
arch/arm/plat-s5p/Kconfig | 1 +
arch/arm/plat-s5p/include/plat/irqs.h | 7 +++++++
arch/arm/plat-s5p/irq-eint.c | 15 ++++++++++-----
8 files changed, 40 insertions(+), 28 deletions(-)
diff --git a/arch/arm/mach-s5p6440/include/mach/irqs.h b/arch/arm/mach-s5p6440/include/mach/irqs.h
index a4b9b40..911854d 100644
--- a/arch/arm/mach-s5p6440/include/mach/irqs.h
+++ b/arch/arm/mach-s5p6440/include/mach/irqs.h
@@ -72,7 +72,14 @@
#define S5P_IRQ_EINT_BASE (S5P_IRQ_VIC1(31) + 6)
#define S5P_EINT(x) ((x) + S5P_IRQ_EINT_BASE)
-#define IRQ_EINT(x) S5P_EINT(x)
+
+#define S5P_EINT_BASE1 (S5P_IRQ_EINT_BASE)
+/*
+ * S5P6440 has 0-15 external interrupts in group 0. Only these can be used
+ * to wake up from sleep. If request is beyond this range, by mistake, a large
+ * return value for an irq number should be indication of something amiss.
+ */
+#define S5P_EINT_BASE2 (0xf0000000)
/*
* Next the external interrupt groups. These are similar to the IRQ_EINT(x)
diff --git a/arch/arm/mach-s5p6442/include/mach/irqs.h b/arch/arm/mach-s5p6442/include/mach/irqs.h
index da66580..02c2374 100644
--- a/arch/arm/mach-s5p6442/include/mach/irqs.h
+++ b/arch/arm/mach-s5p6442/include/mach/irqs.h
@@ -77,8 +77,9 @@
#define S5P_IRQ_EINT_BASE (IRQ_VIC_END + 1)
-#define IRQ_EINT(x) ((x) < 16 ? S5P_IRQ_VIC0(x) : \
- (S5P_IRQ_EINT_BASE + (x)-16))
+#define S5P_EINT_BASE1 (S5P_IRQ_VIC0(0))
+#define S5P_EINT_BASE2 (S5P_IRQ_EINT_BASE)
+
/* Set the default NR_IRQS */
#define NR_IRQS (IRQ_EINT(31) + 1)
diff --git a/arch/arm/mach-s5pc100/include/mach/irqs.h b/arch/arm/mach-s5pc100/include/mach/irqs.h
index 15066df..28aa551 100644
--- a/arch/arm/mach-s5pc100/include/mach/irqs.h
+++ b/arch/arm/mach-s5pc100/include/mach/irqs.h
@@ -100,9 +100,6 @@
#define S5P_EINT_BASE1 (S5P_IRQ_VIC0(0))
#define S5P_EINT_BASE2 (IRQ_VIC_END + 1)
-#define IRQ_EINT(x) ((x) < 16 ? S5P_IRQ_VIC0(x) : \
- (S5P_EINT_BASE2 + (x) - 16))
-
#define S3C_IRQ_GPIO_BASE (IRQ_EINT(31) + 1)
#define S3C_IRQ_GPIO(x) (S3C_IRQ_GPIO_BASE + (x))
diff --git a/arch/arm/mach-s5pv210/include/mach/irqs.h b/arch/arm/mach-s5pv210/include/mach/irqs.h
index 92fc6c7..9689537 100644
--- a/arch/arm/mach-s5pv210/include/mach/irqs.h
+++ b/arch/arm/mach-s5pv210/include/mach/irqs.h
@@ -118,22 +118,12 @@
#define IRQ_MDNIE3 S5P_IRQ_VIC3(8)
#define IRQ_VIC_END S5P_IRQ_VIC3(31)
-#define S5P_EINT_16_31_BASE (IRQ_VIC_END + 1)
-
-#define EINT_MODE S3C_GPIO_SFN(0xf)
-
-#define IRQ_EINT(x) ((x) < 16 ? ((x) + S5P_IRQ_VIC0(0)) \
- : ((x) + S5P_EINT_16_31_BASE))
+#define S5P_EINT_BASE1 (S5P_IRQ_VIC0(0))
+#define S5P_EINT_BASE2 (IRQ_VIC_END + 1)
/* Set the default NR_IRQS */
-
#define NR_IRQS (IRQ_EINT(31) + 1)
-#define EINT_GPIO_0(x) S5PV210_GPH0(x)
-#define EINT_GPIO_1(x) S5PV210_GPH1(x)
-#define EINT_GPIO_2(x) S5PV210_GPH2(x)
-#define EINT_GPIO_3(x) S5PV210_GPH3(x)
-
/* Compatibility */
#define IRQ_LCD_FIFO IRQ_LCD0
#define IRQ_LCD_VSYNC IRQ_LCD1
diff --git a/arch/arm/mach-s5pv210/include/mach/regs-gpio.h b/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
index 6d06809..49e029b 100644
--- a/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
+++ b/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
@@ -27,12 +27,9 @@
#define S5PV210_EINT30PEND (S5P_VA_GPIO + 0xF40)
#define S5P_EINT_PEND(x) (S5PV210_EINT30PEND + ((x) * 0x4))
-#define eint_offset(irq) ((irq) < IRQ_EINT16_31 ? ((irq) - IRQ_EINT(0)) \
- : ((irq) - S5P_EINT_16_31_BASE))
+#define EINT_REG_NR(x) (EINT_OFFSET(x) >> 3)
-#define EINT_REG_NR(x) (eint_offset(x) >> 3)
-
-#define eint_irq_to_bit(irq) (1 << (eint_offset(irq) & 0x7))
+#define eint_irq_to_bit(irq) (1 << (EINT_OFFSET(irq) & 0x7))
/* values for S5P_EXTINT0 */
#define S5P_EXTINT_LOWLEV (0x00)
@@ -41,4 +38,11 @@
#define S5P_EXTINT_RISEEDGE (0x03)
#define S5P_EXTINT_BOTHEDGE (0x04)
+#define EINT_MODE S3C_GPIO_SFN(0xf)
+
+#define EINT_GPIO_0(x) S5PV210_GPH0(x)
+#define EINT_GPIO_1(x) S5PV210_GPH1(x)
+#define EINT_GPIO_2(x) S5PV210_GPH2(x)
+#define EINT_GPIO_3(x) S5PV210_GPH3(x)
+
#endif /* __ASM_ARCH_REGS_GPIO_H */
diff --git a/arch/arm/plat-s5p/Kconfig b/arch/arm/plat-s5p/Kconfig
index 5cb2dd1..11d6a1b 100644
--- a/arch/arm/plat-s5p/Kconfig
+++ b/arch/arm/plat-s5p/Kconfig
@@ -29,3 +29,4 @@ config S5P_EXT_INT
bool
help
Use the external interrupts (other than GPIO interrupts.)
+ Note: Do not choose this for S5P6440.
diff --git a/arch/arm/plat-s5p/include/plat/irqs.h b/arch/arm/plat-s5p/include/plat/irqs.h
index 9ff3d71..3fb3a3a 100644
--- a/arch/arm/plat-s5p/include/plat/irqs.h
+++ b/arch/arm/plat-s5p/include/plat/irqs.h
@@ -87,4 +87,11 @@
#define IRQ_TIMER3 S5P_TIMER_IRQ(3)
#define IRQ_TIMER4 S5P_TIMER_IRQ(4)
+#define IRQ_EINT(x) ((x) < 16 ? ((x) + S5P_EINT_BASE1) \
+ : ((x) - 16 + S5P_EINT_BASE2))
+
+#define EINT_OFFSET(irq) ((irq) < S5P_EINT_BASE2 ? \
+ ((irq) - S5P_EINT_BASE1) : \
+ ((irq) + 16 - S5P_EINT_BASE2))
+
#endif /* __ASM_PLAT_S5P_IRQS_H */
diff --git a/arch/arm/plat-s5p/irq-eint.c b/arch/arm/plat-s5p/irq-eint.c
index eaa70aa..e56c807 100644
--- a/arch/arm/plat-s5p/irq-eint.c
+++ b/arch/arm/plat-s5p/irq-eint.c
@@ -60,7 +60,7 @@ static void s5p_irq_eint_maskack(unsigned int irq)
static int s5p_irq_eint_set_type(unsigned int irq, unsigned int type)
{
- int offs = eint_offset(irq);
+ int offs = EINT_OFFSET(irq);
int shift;
u32 ctrl, mask;
u32 newvalue = 0;
@@ -139,17 +139,16 @@ static struct irq_chip s5p_irq_eint = {
*/
static inline void s5p_irq_demux_eint(unsigned int start)
{
- u32 status;
+ u32 status = __raw_readl(S5P_EINT_PEND(EINT_REG_NR(start)));
u32 mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(start)));
unsigned int irq;
- status = __raw_readl(S5P_EINT_PEND(EINT_REG_NR(start)));
status &= ~mask;
status &= 0xff;
while (status) {
- irq = fls(status);
- generic_handle_irq(irq - 1 + start);
+ irq = fls(status) - 1;
+ generic_handle_irq(irq + start);
status &= ~(1 << irq);
}
}
@@ -162,12 +161,18 @@ static void s5p_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
static inline void s5p_irq_vic_eint_mask(unsigned int irq)
{
+ void __iomem *base = get_irq_chip_data(irq);
+
s5p_irq_eint_mask(irq);
+ writel(1 << EINT_OFFSET(irq), base + VIC_INT_ENABLE_CLEAR);
}
static void s5p_irq_vic_eint_unmask(unsigned int irq)
{
+ void __iomem *base = get_irq_chip_data(irq);
+
s5p_irq_eint_unmask(irq);
+ writel(1 << EINT_OFFSET(irq), base + VIC_INT_ENABLE);
}
static inline void s5p_irq_vic_eint_ack(unsigned int irq)
--
1.6.3.3
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