#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
-#include <linux/ptrace.h>
#include <asm/hardware.h>
#include <asm/irq.h>
static void pxa_mask_low_irq(unsigned int irq)
{
- ICMR &= ~(1 << (irq + PXA_IRQ_SKIP));
+ ICMR &= ~(1 << irq);
}
static void pxa_unmask_low_irq(unsigned int irq)
{
- ICMR |= (1 << (irq + PXA_IRQ_SKIP));
+ ICMR |= (1 << irq);
+}
+
+static int pxa_set_wake(unsigned int irq, unsigned int on)
+{
+ u32 mask;
+
+ switch (irq) {
+ case IRQ_RTCAlrm:
+ mask = PWER_RTC;
+ break;
+#ifdef CONFIG_PXA27x
+ /* REVISIT can handle USBH1, USBH2, USB, MSL, USIM, ... */
+#endif
+ default:
+ return -EINVAL;
+ }
+ if (on)
+ PWER |= mask;
+ else
+ PWER &= ~mask;
+ return 0;
}
static struct irq_chip pxa_internal_chip_low = {
.ack = pxa_mask_low_irq,
.mask = pxa_mask_low_irq,
.unmask = pxa_unmask_low_irq,
+ .set_wake = pxa_set_wake,
};
-#if PXA_INTERNAL_IRQS > 32
+void __init pxa_init_irq_low(void)
+{
+ int irq;
+
+ /* disable all IRQs */
+ ICMR = 0;
+
+ /* all IRQs are IRQ, not FIQ */
+ ICLR = 0;
+
+ /* only unmasked interrupts kick us out of idle */
+ ICCR = 1;
+
+ for (irq = PXA_IRQ(0); irq <= PXA_IRQ(31); irq++) {
+ set_irq_chip(irq, &pxa_internal_chip_low);
+ set_irq_handler(irq, handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+}
+
+#ifdef CONFIG_PXA27x
/*
* This is for the second set of internal IRQs as found on the PXA27x.
static void pxa_mask_high_irq(unsigned int irq)
{
- ICMR2 &= ~(1 << (irq - 32 + PXA_IRQ_SKIP));
+ ICMR2 &= ~(1 << (irq - 32));
}
static void pxa_unmask_high_irq(unsigned int irq)
{
- ICMR2 |= (1 << (irq - 32 + PXA_IRQ_SKIP));
+ ICMR2 |= (1 << (irq - 32));
}
static struct irq_chip pxa_internal_chip_high = {
.unmask = pxa_unmask_high_irq,
};
+void __init pxa_init_irq_high(void)
+{
+ int irq;
+
+ ICMR2 = 0;
+ ICLR2 = 0;
+
+ for (irq = PXA_IRQ(32); irq < PXA_IRQ(64); irq++) {
+ set_irq_chip(irq, &pxa_internal_chip_high);
+ set_irq_handler(irq, handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+}
+#endif
+
+/* Note that if an input/irq line ever gets changed to an output during
+ * suspend, the relevant PWER, PRER, and PFER bits should be cleared.
+ */
+#ifdef CONFIG_PXA27x
+
+/* PXA27x: Various gpios can issue wakeup events. This logic only
+ * handles the simple cases, not the WEMUX2 and WEMUX3 options
+ */
+#define PXA27x_GPIO_NOWAKE_MASK \
+ ((1 << 8) | (1 << 7) | (1 << 6) | (1 << 5) | (1 << 2))
+#define WAKEMASK(gpio) \
+ (((gpio) <= 15) \
+ ? ((1 << (gpio)) & ~PXA27x_GPIO_NOWAKE_MASK) \
+ : ((gpio == 35) ? (1 << 24) : 0))
+#else
+
+/* pxa 210, 250, 255, 26x: gpios 0..15 can issue wakeups */
+#define WAKEMASK(gpio) (((gpio) <= 15) ? (1 << (gpio)) : 0)
#endif
/*
static int pxa_gpio_irq_type(unsigned int irq, unsigned int type)
{
int gpio, idx;
+ u32 mask;
gpio = IRQ_TO_GPIO(irq);
idx = gpio >> 5;
+ mask = WAKEMASK(gpio);
if (type == IRQT_PROBE) {
/* Don't mess with enabled GPIOs using preconfigured edges or
if (type & __IRQT_RISEDGE) {
/* printk("rising "); */
__set_bit (gpio, GPIO_IRQ_rising_edge);
- } else
+ PRER |= mask;
+ } else {
__clear_bit (gpio, GPIO_IRQ_rising_edge);
+ PRER &= ~mask;
+ }
if (type & __IRQT_FALEDGE) {
/* printk("falling "); */
__set_bit (gpio, GPIO_IRQ_falling_edge);
- } else
+ PFER |= mask;
+ } else {
__clear_bit (gpio, GPIO_IRQ_falling_edge);
+ PFER &= ~mask;
+ }
/* printk("edges\n"); */
GEDR0 = (1 << (irq - IRQ_GPIO0));
}
+static int pxa_set_gpio_wake(unsigned int irq, unsigned int on)
+{
+ int gpio = IRQ_TO_GPIO(irq);
+ u32 mask = WAKEMASK(gpio);
+
+ if (!mask)
+ return -EINVAL;
+
+ if (on)
+ PWER |= mask;
+ else
+ PWER &= ~mask;
+ return 0;
+}
+
+
static struct irq_chip pxa_low_gpio_chip = {
.name = "GPIO-l",
.ack = pxa_ack_low_gpio,
.mask = pxa_mask_low_irq,
.unmask = pxa_unmask_low_irq,
.set_type = pxa_gpio_irq_type,
+ .set_wake = pxa_set_gpio_wake,
};
/*
.mask = pxa_mask_muxed_gpio,
.unmask = pxa_unmask_muxed_gpio,
.set_type = pxa_gpio_irq_type,
+ .set_wake = pxa_set_gpio_wake,
};
-
-void __init pxa_init_irq(void)
+void __init pxa_init_irq_gpio(int gpio_nr)
{
- int irq;
-
- /* disable all IRQs */
- ICMR = 0;
-
- /* all IRQs are IRQ, not FIQ */
- ICLR = 0;
+ int irq, i;
/* clear all GPIO edge detects */
- GFER0 = 0;
- GFER1 = 0;
- GFER2 = 0;
- GRER0 = 0;
- GRER1 = 0;
- GRER2 = 0;
- GEDR0 = GEDR0;
- GEDR1 = GEDR1;
- GEDR2 = GEDR2;
-
-#ifdef CONFIG_PXA27x
- /* And similarly for the extra regs on the PXA27x */
- ICMR2 = 0;
- ICLR2 = 0;
- GFER3 = 0;
- GRER3 = 0;
- GEDR3 = GEDR3;
-#endif
-
- /* only unmasked interrupts kick us out of idle */
- ICCR = 1;
+ for (i = 0; i < gpio_nr; i += 32) {
+ GFER(i) = 0;
+ GRER(i) = 0;
+ GEDR(i) = GEDR(i);
+ }
/* GPIO 0 and 1 must have their mask bit always set */
GPIO_IRQ_mask[0] = 3;
- for (irq = PXA_IRQ(PXA_IRQ_SKIP); irq <= PXA_IRQ(31); irq++) {
- set_irq_chip(irq, &pxa_internal_chip_low);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
-#if PXA_INTERNAL_IRQS > 32
- for (irq = PXA_IRQ(32); irq < PXA_IRQ(PXA_INTERNAL_IRQS); irq++) {
- set_irq_chip(irq, &pxa_internal_chip_high);
- set_irq_handler(irq, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-#endif
-
for (irq = IRQ_GPIO0; irq <= IRQ_GPIO1; irq++) {
set_irq_chip(irq, &pxa_low_gpio_chip);
set_irq_handler(irq, handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
- for (irq = IRQ_GPIO(2); irq <= IRQ_GPIO(PXA_LAST_GPIO); irq++) {
+ for (irq = IRQ_GPIO(2); irq <= IRQ_GPIO(gpio_nr); irq++) {
set_irq_chip(irq, &pxa_muxed_gpio_chip);
set_irq_handler(irq, handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
set_irq_chip(IRQ_GPIO_2_x, &pxa_internal_chip_low);
set_irq_chained_handler(IRQ_GPIO_2_x, pxa_gpio_demux_handler);
}
+
+void __init pxa_init_irq(void)
+{
+ pxa_init_irq_low();
+#ifdef CONFIG_PXA27x
+ pxa_init_irq_high();
+#endif
+ pxa_init_irq_gpio(PXA_LAST_GPIO + 1);
+}