summaryrefslogtreecommitdiff
path: root/arch/arm/mach-sa1100
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r--arch/arm/mach-sa1100/include/mach/irqs.h73
-rw-r--r--arch/arm/mach-sa1100/irq.c87
2 files changed, 92 insertions, 68 deletions
diff --git a/arch/arm/mach-sa1100/include/mach/irqs.h b/arch/arm/mach-sa1100/include/mach/irqs.h
index de0983494c7e..734e30e406a3 100644
--- a/arch/arm/mach-sa1100/include/mach/irqs.h
+++ b/arch/arm/mach-sa1100/include/mach/irqs.h
@@ -8,17 +8,17 @@
* 2001/11/14 RMK Cleaned up and standardised a lot of the IRQs.
*/
-#define IRQ_GPIO0 1
-#define IRQ_GPIO1 2
-#define IRQ_GPIO2 3
-#define IRQ_GPIO3 4
-#define IRQ_GPIO4 5
-#define IRQ_GPIO5 6
-#define IRQ_GPIO6 7
-#define IRQ_GPIO7 8
-#define IRQ_GPIO8 9
-#define IRQ_GPIO9 10
-#define IRQ_GPIO10 11
+#define IRQ_GPIO0_SC 1
+#define IRQ_GPIO1_SC 2
+#define IRQ_GPIO2_SC 3
+#define IRQ_GPIO3_SC 4
+#define IRQ_GPIO4_SC 5
+#define IRQ_GPIO5_SC 6
+#define IRQ_GPIO6_SC 7
+#define IRQ_GPIO7_SC 8
+#define IRQ_GPIO8_SC 9
+#define IRQ_GPIO9_SC 10
+#define IRQ_GPIO10_SC 11
#define IRQ_GPIO11_27 12
#define IRQ_LCD 13 /* LCD controller */
#define IRQ_Ser0UDC 14 /* Ser. port 0 UDC */
@@ -41,32 +41,43 @@
#define IRQ_RTC1Hz 31 /* RTC 1 Hz clock */
#define IRQ_RTCAlrm 32 /* RTC Alarm */
-#define IRQ_GPIO11 33
-#define IRQ_GPIO12 34
-#define IRQ_GPIO13 35
-#define IRQ_GPIO14 36
-#define IRQ_GPIO15 37
-#define IRQ_GPIO16 38
-#define IRQ_GPIO17 39
-#define IRQ_GPIO18 40
-#define IRQ_GPIO19 41
-#define IRQ_GPIO20 42
-#define IRQ_GPIO21 43
-#define IRQ_GPIO22 44
-#define IRQ_GPIO23 45
-#define IRQ_GPIO24 46
-#define IRQ_GPIO25 47
-#define IRQ_GPIO26 48
-#define IRQ_GPIO27 49
+#define IRQ_GPIO0 33
+#define IRQ_GPIO1 34
+#define IRQ_GPIO2 35
+#define IRQ_GPIO3 36
+#define IRQ_GPIO4 37
+#define IRQ_GPIO5 38
+#define IRQ_GPIO6 39
+#define IRQ_GPIO7 40
+#define IRQ_GPIO8 41
+#define IRQ_GPIO9 42
+#define IRQ_GPIO10 43
+#define IRQ_GPIO11 44
+#define IRQ_GPIO12 45
+#define IRQ_GPIO13 46
+#define IRQ_GPIO14 47
+#define IRQ_GPIO15 48
+#define IRQ_GPIO16 49
+#define IRQ_GPIO17 50
+#define IRQ_GPIO18 51
+#define IRQ_GPIO19 52
+#define IRQ_GPIO20 53
+#define IRQ_GPIO21 54
+#define IRQ_GPIO22 55
+#define IRQ_GPIO23 56
+#define IRQ_GPIO24 57
+#define IRQ_GPIO25 58
+#define IRQ_GPIO26 59
+#define IRQ_GPIO27 60
/*
* The next 16 interrupts are for board specific purposes. Since
* the kernel can only run on one machine at a time, we can re-use
* these. If you need more, increase IRQ_BOARD_END, but keep it
- * within sensible limits. IRQs 49 to 64 are available.
+ * within sensible limits. IRQs 61 to 76 are available.
*/
-#define IRQ_BOARD_START 50
-#define IRQ_BOARD_END 66
+#define IRQ_BOARD_START 61
+#define IRQ_BOARD_END 77
/*
* Figure out the MAX IRQ number.
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 63e2901db416..2dc6a2a9c60c 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -87,7 +87,7 @@ static struct irq_domain *sa1100_normal_irqdomain;
*/
static int GPIO_IRQ_rising_edge;
static int GPIO_IRQ_falling_edge;
-static int GPIO_IRQ_mask = (1 << 11) - 1;
+static int GPIO_IRQ_mask;
static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
{
@@ -124,6 +124,26 @@ static void sa1100_gpio_ack(struct irq_data *d)
GEDR = BIT(d->hwirq);
}
+static void sa1100_gpio_mask(struct irq_data *d)
+{
+ unsigned int mask = BIT(d->hwirq);
+
+ GPIO_IRQ_mask &= ~mask;
+
+ GRER &= ~mask;
+ GFER &= ~mask;
+}
+
+static void sa1100_gpio_unmask(struct irq_data *d)
+{
+ unsigned int mask = BIT(d->hwirq);
+
+ GPIO_IRQ_mask |= mask;
+
+ GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
+ GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
+}
+
static int sa1100_gpio_wake(struct irq_data *d, unsigned int on)
{
if (on)
@@ -139,8 +159,8 @@ static int sa1100_gpio_wake(struct irq_data *d, unsigned int on)
static struct irq_chip sa1100_low_gpio_chip = {
.name = "GPIO-l",
.irq_ack = sa1100_gpio_ack,
- .irq_mask = sa1100_mask_irq,
- .irq_unmask = sa1100_unmask_irq,
+ .irq_mask = sa1100_gpio_mask,
+ .irq_unmask = sa1100_gpio_unmask,
.irq_set_type = sa1100_gpio_type,
.irq_set_wake = sa1100_gpio_wake,
};
@@ -163,16 +183,16 @@ static struct irq_domain_ops sa1100_low_gpio_irqdomain_ops = {
static struct irq_domain *sa1100_low_gpio_irqdomain;
/*
- * IRQ11 (GPIO11 through 27) handler. We enter here with the
+ * IRQ 0-11 (GPIO) handler. We enter here with the
* irq_controller_lock held, and IRQs disabled. Decode the IRQ
* and call the handler.
*/
static void
-sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
+sa1100_gpio_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned int mask;
- mask = GEDR & 0xfffff800;
+ mask = GEDR;
do {
/*
* clear down all currently active IRQ sources.
@@ -180,8 +200,7 @@ sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
*/
GEDR = mask;
- irq = IRQ_GPIO11;
- mask >>= 11;
+ irq = IRQ_GPIO0;
do {
if (mask & 1)
generic_handle_irq(irq);
@@ -189,7 +208,7 @@ sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
irq++;
} while (mask);
- mask = GEDR & 0xfffff800;
+ mask = GEDR;
} while (mask);
}
@@ -198,31 +217,11 @@ sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
* In addition, the IRQs are all collected up into one bit in the
* interrupt controller registers.
*/
-static void sa1100_high_gpio_mask(struct irq_data *d)
-{
- unsigned int mask = BIT(d->hwirq);
-
- GPIO_IRQ_mask &= ~mask;
-
- GRER &= ~mask;
- GFER &= ~mask;
-}
-
-static void sa1100_high_gpio_unmask(struct irq_data *d)
-{
- unsigned int mask = BIT(d->hwirq);
-
- GPIO_IRQ_mask |= mask;
-
- GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
- GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
-}
-
static struct irq_chip sa1100_high_gpio_chip = {
.name = "GPIO-h",
.irq_ack = sa1100_gpio_ack,
- .irq_mask = sa1100_high_gpio_mask,
- .irq_unmask = sa1100_high_gpio_unmask,
+ .irq_mask = sa1100_gpio_mask,
+ .irq_unmask = sa1100_gpio_unmask,
.irq_set_type = sa1100_gpio_type,
.irq_set_wake = sa1100_gpio_wake,
};
@@ -325,7 +324,7 @@ sa1100_handle_irq(struct pt_regs *regs)
if (mask == 0)
break;
- handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0, regs);
+ handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0_SC, regs);
} while (1);
}
@@ -350,22 +349,36 @@ void __init sa1100_init_irq(void)
*/
ICCR = 1;
+ sa1100_normal_irqdomain = irq_domain_add_legacy(NULL,
+ 32, IRQ_GPIO0_SC, 0,
+ &sa1100_normal_irqdomain_ops, NULL);
+
sa1100_low_gpio_irqdomain = irq_domain_add_legacy(NULL,
11, IRQ_GPIO0, 0,
&sa1100_low_gpio_irqdomain_ops, NULL);
- sa1100_normal_irqdomain = irq_domain_add_legacy(NULL,
- 21, IRQ_GPIO11_27, 11,
- &sa1100_normal_irqdomain_ops, NULL);
-
sa1100_high_gpio_irqdomain = irq_domain_add_legacy(NULL,
17, IRQ_GPIO11, 11,
&sa1100_high_gpio_irqdomain_ops, NULL);
/*
+ * Install handlers for GPIO 0-10 edge detect interrupts
+ */
+ irq_set_chained_handler(IRQ_GPIO0_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO1_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO2_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO3_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO4_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO5_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO6_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO7_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO8_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO9_SC, sa1100_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO10_SC, sa1100_gpio_handler);
+ /*
* Install handler for GPIO 11-27 edge detect interrupts
*/
- irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
+ irq_set_chained_handler(IRQ_GPIO11_27, sa1100_gpio_handler);
set_handle_irq(sa1100_handle_irq);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-25 14:25:00 +0000