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-rw-r--r--arch/arm/mach-sa1100/Makefile2
-rw-r--r--arch/arm/mach-sa1100/assabet.c2
-rw-r--r--arch/arm/mach-sa1100/clock.c12
-rw-r--r--arch/arm/mach-sa1100/collie.c5
-rw-r--r--arch/arm/mach-sa1100/generic.c6
-rw-r--r--arch/arm/mach-sa1100/h3100.c2
-rw-r--r--arch/arm/mach-sa1100/h3600.c2
-rw-r--r--arch/arm/mach-sa1100/include/mach/irqs.h73
-rw-r--r--arch/arm/mach-sa1100/irq.c203
-rw-r--r--arch/arm/mach-sa1100/pci-nanoengine.c94
-rw-r--r--arch/arm/mach-sa1100/pm.c1
-rw-r--r--arch/arm/mach-sa1100/time.c139
12 files changed, 79 insertions, 462 deletions
diff --git a/arch/arm/mach-sa1100/Makefile b/arch/arm/mach-sa1100/Makefile
index f1114d11fe1..61ff91e76e0 100644
--- a/arch/arm/mach-sa1100/Makefile
+++ b/arch/arm/mach-sa1100/Makefile
@@ -3,7 +3,7 @@
#
# Common support
-obj-y := clock.o generic.o irq.o time.o #nmi-oopser.o
+obj-y := clock.o generic.o irq.o #nmi-oopser.o
# Specific board support
obj-$(CONFIG_SA1100_ASSABET) += assabet.o
diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index 7dd894ece9a..d28ecb9ef17 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -37,7 +37,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
-#include <asm/mach/irda.h>
+#include <linux/platform_data/irda-sa11x0.h>
#include <asm/mach/map.h>
#include <mach/assabet.h>
#include <linux/platform_data/mfd-mcp-sa11x0.h>
diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c
index 03c75a811cb..cbf53bb9c81 100644
--- a/arch/arm/mach-sa1100/clock.c
+++ b/arch/arm/mach-sa1100/clock.c
@@ -119,6 +119,17 @@ static DEFINE_CLK(gpio27, &clk_gpio27_ops);
static DEFINE_CLK(cpu, &clk_cpu_ops);
+static unsigned long clk_36864_get_rate(struct clk *clk)
+{
+ return 3686400;
+}
+
+static struct clkops clk_36864_ops = {
+ .get_rate = clk_36864_get_rate,
+};
+
+static DEFINE_CLK(36864, &clk_36864_ops);
+
static struct clk_lookup sa11xx_clkregs[] = {
CLKDEV_INIT("sa1111.0", NULL, &clk_gpio27),
CLKDEV_INIT("sa1100-rtc", NULL, NULL),
@@ -126,6 +137,7 @@ static struct clk_lookup sa11xx_clkregs[] = {
CLKDEV_INIT("sa11x0-pcmcia", NULL, &clk_cpu),
/* sa1111 names devices using internal offsets, PCMCIA is at 0x1800 */
CLKDEV_INIT("1800", NULL, &clk_cpu),
+ CLKDEV_INIT(NULL, "OSTIMER0", &clk_36864),
};
static int __init sa11xx_clk_init(void)
diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index b90c7d82839..3cc2b71e16f 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -43,7 +43,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
-#include <asm/mach/irda.h>
+#include <linux/platform_data/irda-sa11x0.h>
#include <asm/hardware/scoop.h>
#include <asm/mach/sharpsl_param.h>
@@ -371,8 +371,7 @@ static void __init collie_init(void)
PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;
- PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY |
- _COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
+ PWER = 0;
PGSR = _COLLIE_GPIO_nREMOCON_ON;
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index d4ea142c4ed..40e0d8619a2 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -33,6 +33,7 @@
#include <mach/irqs.h>
#include "generic.h"
+#include <clocksource/pxa.h>
unsigned int reset_status;
EXPORT_SYMBOL(reset_status);
@@ -369,6 +370,11 @@ void __init sa1100_map_io(void)
iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
}
+void __init sa1100_timer_init(void)
+{
+ pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x90000000), 3686400);
+}
+
/*
* Disable the memory bus request/grant signals on the SA1110 to
* ensure that we don't receive spurious memory requests. We set
diff --git a/arch/arm/mach-sa1100/h3100.c b/arch/arm/mach-sa1100/h3100.c
index 3c43219bc88..c6b412054a3 100644
--- a/arch/arm/mach-sa1100/h3100.c
+++ b/arch/arm/mach-sa1100/h3100.c
@@ -18,7 +18,7 @@
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
-#include <asm/mach/irda.h>
+#include <linux/platform_data/irda-sa11x0.h>
#include <mach/h3xxx.h>
#include <mach/irqs.h>
diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c
index 5be54c214c7..118338efd79 100644
--- a/arch/arm/mach-sa1100/h3600.c
+++ b/arch/arm/mach-sa1100/h3600.c
@@ -18,7 +18,7 @@
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
-#include <asm/mach/irda.h>
+#include <linux/platform_data/irda-sa11x0.h>
#include <mach/h3xxx.h>
#include <mach/irqs.h>
diff --git a/arch/arm/mach-sa1100/include/mach/irqs.h b/arch/arm/mach-sa1100/include/mach/irqs.h
index de0983494c7..734e30e406a 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 63e2901db41..65aebfa66fe 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -80,170 +80,6 @@ static struct irq_domain_ops sa1100_normal_irqdomain_ops = {
static struct irq_domain *sa1100_normal_irqdomain;
-/*
- * SA1100 GPIO edge detection for IRQs:
- * IRQs are generated on Falling-Edge, Rising-Edge, or both.
- * Use this instead of directly setting GRER/GFER.
- */
-static int GPIO_IRQ_rising_edge;
-static int GPIO_IRQ_falling_edge;
-static int GPIO_IRQ_mask = (1 << 11) - 1;
-
-static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
-{
- unsigned int mask;
-
- mask = BIT(d->hwirq);
-
- if (type == IRQ_TYPE_PROBE) {
- if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask)
- return 0;
- type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
- }
-
- if (type & IRQ_TYPE_EDGE_RISING) {
- GPIO_IRQ_rising_edge |= mask;
- } else
- GPIO_IRQ_rising_edge &= ~mask;
- if (type & IRQ_TYPE_EDGE_FALLING) {
- GPIO_IRQ_falling_edge |= mask;
- } else
- GPIO_IRQ_falling_edge &= ~mask;
-
- GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
- GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
-
- return 0;
-}
-
-/*
- * GPIO IRQs must be acknowledged.
- */
-static void sa1100_gpio_ack(struct irq_data *d)
-{
- GEDR = BIT(d->hwirq);
-}
-
-static int sa1100_gpio_wake(struct irq_data *d, unsigned int on)
-{
- if (on)
- PWER |= BIT(d->hwirq);
- else
- PWER &= ~BIT(d->hwirq);
- return 0;
-}
-
-/*
- * This is for IRQs from 0 to 10.
- */
-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_set_type = sa1100_gpio_type,
- .irq_set_wake = sa1100_gpio_wake,
-};
-
-static int sa1100_low_gpio_irqdomain_map(struct irq_domain *d,
- unsigned int irq, irq_hw_number_t hwirq)
-{
- irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-
- return 0;
-}
-
-static struct irq_domain_ops sa1100_low_gpio_irqdomain_ops = {
- .map = sa1100_low_gpio_irqdomain_map,
- .xlate = irq_domain_xlate_onetwocell,
-};
-
-static struct irq_domain *sa1100_low_gpio_irqdomain;
-
-/*
- * IRQ11 (GPIO11 through 27) 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)
-{
- unsigned int mask;
-
- mask = GEDR & 0xfffff800;
- do {
- /*
- * clear down all currently active IRQ sources.
- * We will be processing them all.
- */
- GEDR = mask;
-
- irq = IRQ_GPIO11;
- mask >>= 11;
- do {
- if (mask & 1)
- generic_handle_irq(irq);
- mask >>= 1;
- irq++;
- } while (mask);
-
- mask = GEDR & 0xfffff800;
- } while (mask);
-}
-
-/*
- * Like GPIO0 to 10, GPIO11-27 IRQs need to be handled specially.
- * 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_set_type = sa1100_gpio_type,
- .irq_set_wake = sa1100_gpio_wake,
-};
-
-static int sa1100_high_gpio_irqdomain_map(struct irq_domain *d,
- unsigned int irq, irq_hw_number_t hwirq)
-{
- irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-
- return 0;
-}
-
-static struct irq_domain_ops sa1100_high_gpio_irqdomain_ops = {
- .map = sa1100_high_gpio_irqdomain_map,
- .xlate = irq_domain_xlate_onetwocell,
-};
-
-static struct irq_domain *sa1100_high_gpio_irqdomain;
-
static struct resource irq_resource =
DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs");
@@ -270,17 +106,6 @@ static int sa1100irq_suspend(void)
IC_GPIO6|IC_GPIO5|IC_GPIO4|IC_GPIO3|IC_GPIO2|
IC_GPIO1|IC_GPIO0);
- /*
- * Set the appropriate edges for wakeup.
- */
- GRER = PWER & GPIO_IRQ_rising_edge;
- GFER = PWER & GPIO_IRQ_falling_edge;
-
- /*
- * Clear any pending GPIO interrupts.
- */
- GEDR = GEDR;
-
return 0;
}
@@ -292,9 +117,6 @@ static void sa1100irq_resume(void)
ICCR = st->iccr;
ICLR = st->iclr;
- GRER = GPIO_IRQ_rising_edge & GPIO_IRQ_mask;
- GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
-
ICMR = st->icmr;
}
}
@@ -325,7 +147,8 @@ sa1100_handle_irq(struct pt_regs *regs)
if (mask == 0)
break;
- handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0, regs);
+ handle_domain_irq(sa1100_normal_irqdomain,
+ ffs(mask) - 1, regs);
} while (1);
}
@@ -339,34 +162,16 @@ void __init sa1100_init_irq(void)
/* all IRQs are IRQ, not FIQ */
ICLR = 0;
- /* clear all GPIO edge detects */
- GFER = 0;
- GRER = 0;
- GEDR = -1;
-
/*
* Whatever the doc says, this has to be set for the wait-on-irq
* instruction to work... on a SA1100 rev 9 at least.
*/
ICCR = 1;
- 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 = irq_domain_add_simple(NULL,
+ 32, IRQ_GPIO0_SC,
&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 handler for GPIO 11-27 edge detect interrupts
- */
- irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
-
set_handle_irq(sa1100_handle_irq);
sa1100_init_gpio();
diff --git a/arch/arm/mach-sa1100/pci-nanoengine.c b/arch/arm/mach-sa1100/pci-nanoengine.c
index b704433c529..d7ae8d50f6d 100644
--- a/arch/arm/mach-sa1100/pci-nanoengine.c
+++ b/arch/arm/mach-sa1100/pci-nanoengine.c
@@ -22,7 +22,6 @@
#include <linux/kernel.h>
#include <linux/irq.h>
#include <linux/pci.h>
-#include <linux/spinlock.h>
#include <asm/mach/pci.h>
#include <asm/mach-types.h>
@@ -30,97 +29,20 @@
#include <mach/nanoengine.h>
#include <mach/hardware.h>
-static DEFINE_SPINLOCK(nano_lock);
-
-static int nanoengine_get_pci_address(struct pci_bus *bus,
- unsigned int devfn, int where, void __iomem **address)
+static void __iomem *nanoengine_pci_map_bus(struct pci_bus *bus,
+ unsigned int devfn, int where)
{
- int ret = PCIBIOS_DEVICE_NOT_FOUND;
- unsigned int busnr = bus->number;
+ if (bus->number != 0 || (devfn >> 3) != 0)
+ return NULL;
- *address = (void __iomem *)NANO_PCI_CONFIG_SPACE_VIRT +
+ return (void __iomem *)NANO_PCI_CONFIG_SPACE_VIRT +
((bus->number << 16) | (devfn << 8) | (where & ~3));
-
- ret = (busnr > 255 || devfn > 255 || where > 255) ?
- PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
-
- return ret;
-}
-
-static int nanoengine_read_config(struct pci_bus *bus, unsigned int devfn, int where,
- int size, u32 *val)
-{
- int ret;
- void __iomem *address;
- unsigned long flags;
- u32 v;
-
- /* nanoEngine PCI bridge does not return -1 for a non-existing
- * device. We must fake the answer. We know that the only valid
- * device is device zero at bus 0, which is the network chip. */
- if (bus->number != 0 || (devfn >> 3) != 0) {
- v = -1;
- nanoengine_get_pci_address(bus, devfn, where, &address);
- goto exit_function;
- }
-
- spin_lock_irqsave(&nano_lock, flags);
-
- ret = nanoengine_get_pci_address(bus, devfn, where, &address);
- if (ret != PCIBIOS_SUCCESSFUL)
- return ret;
- v = __raw_readl(address);
-
- spin_unlock_irqrestore(&nano_lock, flags);
-
- v >>= ((where & 3) * 8);
- v &= (unsigned long)(-1) >> ((4 - size) * 8);
-
-exit_function:
- *val = v;
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int nanoengine_write_config(struct pci_bus *bus, unsigned int devfn, int where,
- int size, u32 val)
-{
- int ret;
- void __iomem *address;
- unsigned long flags;
- unsigned shift;
- u32 v;
-
- shift = (where & 3) * 8;
-
- spin_lock_irqsave(&nano_lock, flags);
-
- ret = nanoengine_get_pci_address(bus, devfn, where, &address);
- if (ret != PCIBIOS_SUCCESSFUL)
- return ret;
- v = __raw_readl(address);
- switch (size) {
- case 1:
- v &= ~(0xFF << shift);
- v |= val << shift;
- break;
- case 2:
- v &= ~(0xFFFF << shift);
- v |= val << shift;
- break;
- case 4:
- v = val;
- break;
- }
- __raw_writel(v, address);
-
- spin_unlock_irqrestore(&nano_lock, flags);
-
- return PCIBIOS_SUCCESSFUL;
}
static struct pci_ops pci_nano_ops = {
- .read = nanoengine_read_config,
- .write = nanoengine_write_config,
+ .map_bus = nanoengine_pci_map_bus,
+ .read = pci_generic_config_read32,
+ .write = pci_generic_config_write32,
};
static int __init pci_nanoengine_map_irq(const struct pci_dev *dev, u8 slot,
diff --git a/arch/arm/mach-sa1100/pm.c b/arch/arm/mach-sa1100/pm.c
index 6645d1e31f1..34853d5dfda 100644
--- a/arch/arm/mach-sa1100/pm.c
+++ b/arch/arm/mach-sa1100/pm.c
@@ -81,6 +81,7 @@ static int sa11x0_pm_enter(suspend_state_t state)
/*
* Ensure not to come back here if it wasn't intended
*/
+ RCSR = RCSR_SMR;
PSPR = 0;
/*
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
deleted file mode 100644
index 1dea6cfafb3..00000000000
--- a/arch/arm/mach-sa1100/time.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * linux/arch/arm/mach-sa1100/time.c
- *
- * Copyright (C) 1998 Deborah Wallach.
- * Twiddles (C) 1999 Hugo Fiennes <hugo@empeg.com>
- *
- * 2000/03/29 (C) Nicolas Pitre <nico@fluxnic.net>
- * Rewritten: big cleanup, much simpler, better HZ accuracy.
- *
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/timex.h>
-#include <linux/clockchips.h>
-#include <linux/sched_clock.h>
-
-#include <asm/mach/time.h>
-#include <mach/hardware.h>
-#include <mach/irqs.h>
-
-#define SA1100_CLOCK_FREQ 3686400
-#define SA1100_LATCH DIV_ROUND_CLOSEST(SA1100_CLOCK_FREQ, HZ)
-
-static u64 notrace sa1100_read_sched_clock(void)
-{
- return readl_relaxed(OSCR);
-}
-
-#define MIN_OSCR_DELTA 2
-
-static irqreturn_t sa1100_ost0_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *c = dev_id;
-
- /* Disarm the compare/match, signal the event. */
- writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
- writel_relaxed(OSSR_M0, OSSR);
- c->event_handler(c);
-
- return IRQ_HANDLED;
-}
-
-static int
-sa1100_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
-{
- unsigned long next, oscr;
-
- writel_relaxed(readl_relaxed(OIER) | OIER_E0, OIER);
- next = readl_relaxed(OSCR) + delta;
- writel_relaxed(next, OSMR0);
- oscr = readl_relaxed(OSCR);
-
- return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
-}
-
-static void
-sa1100_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c)
-{
- switch (mode) {
- case CLOCK_EVT_MODE_ONESHOT:
- case CLOCK_EVT_MODE_UNUSED:
- case CLOCK_EVT_MODE_SHUTDOWN:
- writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
- writel_relaxed(OSSR_M0, OSSR);
- break;
-
- case CLOCK_EVT_MODE_RESUME:
- case CLOCK_EVT_MODE_PERIODIC:
- break;
- }
-}
-
-#ifdef CONFIG_PM
-unsigned long osmr[4], oier;
-
-static void sa1100_timer_suspend(struct clock_event_device *cedev)
-{
- osmr[0] = readl_relaxed(OSMR0);
- osmr[1] = readl_relaxed(OSMR1);
- osmr[2] = readl_relaxed(OSMR2);
- osmr[3] = readl_relaxed(OSMR3);
- oier = readl_relaxed(OIER);
-}
-
-static void sa1100_timer_resume(struct clock_event_device *cedev)
-{
- writel_relaxed(0x0f, OSSR);
- writel_relaxed(osmr[0], OSMR0);
- writel_relaxed(osmr[1], OSMR1);
- writel_relaxed(osmr[2], OSMR2);
- writel_relaxed(osmr[3], OSMR3);
- writel_relaxed(oier, OIER);
-
- /*
- * OSMR0 is the system timer: make sure OSCR is sufficiently behind
- */
- writel_relaxed(OSMR0 - SA1100_LATCH, OSCR);
-}
-#else
-#define sa1100_timer_suspend NULL
-#define sa1100_timer_resume NULL
-#endif
-
-static struct clock_event_device ckevt_sa1100_osmr0 = {
- .name = "osmr0",
- .features = CLOCK_EVT_FEAT_ONESHOT,
- .rating = 200,
- .set_next_event = sa1100_osmr0_set_next_event,
- .set_mode = sa1100_osmr0_set_mode,
- .suspend = sa1100_timer_suspend,
- .resume = sa1100_timer_resume,
-};
-
-static struct irqaction sa1100_timer_irq = {
- .name = "ost0",
- .flags = IRQF_TIMER | IRQF_IRQPOLL,
- .handler = sa1100_ost0_interrupt,
- .dev_id = &ckevt_sa1100_osmr0,
-};
-
-void __init sa1100_timer_init(void)
-{
- writel_relaxed(0, OIER);
- writel_relaxed(OSSR_M0 | OSSR_M1 | OSSR_M2 | OSSR_M3, OSSR);
-
- sched_clock_register(sa1100_read_sched_clock, 32, 3686400);
-
- ckevt_sa1100_osmr0.cpumask = cpumask_of(0);
-
- setup_irq(IRQ_OST0, &sa1100_timer_irq);
-
- clocksource_mmio_init(OSCR, "oscr", SA1100_CLOCK_FREQ, 200, 32,
- clocksource_mmio_readl_up);
- clockevents_config_and_register(&ckevt_sa1100_osmr0, 3686400,
- MIN_OSCR_DELTA * 2, 0x7fffffff);
-}