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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-12 15:26:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-12 15:26:48 -0800
commit26ceb127f7bcf473db926c6a026b18ddd6f274e8 (patch)
treea8944a9c0730c409b0cfb17c541085face068556 /arch/arm/mach-sa1100
parent8d14066755592a2906b4f2378aeb5471b602d3cb (diff)
parente9f2d6d66037cdf97487491e04053f411abc5d16 (diff)
downloadlinux-linaro-stable-26ceb127f7bcf473db926c6a026b18ddd6f274e8.tar.gz
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King: "The major updates included in this update are: - Clang compatible stack pointer accesses by Behan Webster. - SA11x0 updates from Dmitry Eremin-Solenikov. - kgdb handling of breakpoints with read-only text/modules - Support for Privileged-no-execute feature on ARMv7 to prevent userspace code execution by the kernel. - AMBA primecell bus handling of irq-safe runtime PM - Unwinding support for memset/memzero/memmove/memcpy functions - VFP fixes for Krait CPUs and improvements in detecting the VFP architecture - A number of code cleanups (using pr_*, removing or reducing the severity of a couple of kernel messages, splitting ftrace asm code out to a separate file, etc.) - Add machine name to stack dump output" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (62 commits) ARM: 8247/2: pcmcia: sa1100: make use of device clock ARM: 8246/2: pcmcia: sa1111: provide device clock ARM: 8245/1: pcmcia: soc-common: enable/disable socket clocks ARM: 8244/1: fbdev: sa1100fb: make use of device clock ARM: 8243/1: sa1100: add a clock alias for sa1111 pcmcia device ARM: 8242/1: sa1100: add cpu clock ARM: 8221/1: PJ4: allow building in Thumb-2 mode ARM: 8234/1: sa1100: reorder IRQ handling code ARM: 8233/1: sa1100: switch to hwirq usage ARM: 8232/1: sa1100: merge GPIO multiplexer IRQ to "normal" irq domain ARM: 8231/1: sa1100: introduce irqdomains support ARM: 8230/1: sa1100: shift IRQs by one ARM: 8229/1: sa1100: replace irq numbers with names in irq driver ARM: 8228/1: sa1100: drop entry-macro.S ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER ARM: 8241/1: Update processor_modes for hyp and monitor mode ARM: 8240/1: MCPM: document mcpm_sync_init() ARM: 8239/1: Introduce {set,clear}_pte_bit ARM: 8238/1: mm: Refine set_memory_* functions ARM: 8237/1: fix flush_pfn_alias ...
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r--arch/arm/mach-sa1100/clock.c43
-rw-r--r--arch/arm/mach-sa1100/collie.c55
-rw-r--r--arch/arm/mach-sa1100/include/mach/entry-macro.S41
-rw-r--r--arch/arm/mach-sa1100/include/mach/irqs.h102
-rw-r--r--arch/arm/mach-sa1100/irq.c229
5 files changed, 224 insertions, 246 deletions
diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c
index 9fa6a990cf03..03c75a811cb0 100644
--- a/arch/arm/mach-sa1100/clock.c
+++ b/arch/arm/mach-sa1100/clock.c
@@ -15,10 +15,12 @@
#include <linux/clkdev.h>
#include <mach/hardware.h>
+#include <mach/generic.h>
struct clkops {
void (*enable)(struct clk *);
void (*disable)(struct clk *);
+ unsigned long (*get_rate)(struct clk *);
};
struct clk {
@@ -33,13 +35,6 @@ struct clk clk_##_name = { \
static DEFINE_SPINLOCK(clocks_lock);
-/* Dummy clk routine to build generic kernel parts that may be using them */
-unsigned long clk_get_rate(struct clk *clk)
-{
- return 0;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
static void clk_gpio27_enable(struct clk *clk)
{
/*
@@ -58,6 +53,19 @@ static void clk_gpio27_disable(struct clk *clk)
GAFR &= ~GPIO_32_768kHz;
}
+static void clk_cpu_enable(struct clk *clk)
+{
+}
+
+static void clk_cpu_disable(struct clk *clk)
+{
+}
+
+static unsigned long clk_cpu_get_rate(struct clk *clk)
+{
+ return sa11x0_getspeed(0) * 1000;
+}
+
int clk_enable(struct clk *clk)
{
unsigned long flags;
@@ -87,16 +95,37 @@ void clk_disable(struct clk *clk)
}
EXPORT_SYMBOL(clk_disable);
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (clk && clk->ops && clk->ops->get_rate)
+ return clk->ops->get_rate(clk);
+
+ return 0;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
const struct clkops clk_gpio27_ops = {
.enable = clk_gpio27_enable,
.disable = clk_gpio27_disable,
};
+const struct clkops clk_cpu_ops = {
+ .enable = clk_cpu_enable,
+ .disable = clk_cpu_disable,
+ .get_rate = clk_cpu_get_rate,
+};
+
static DEFINE_CLK(gpio27, &clk_gpio27_ops);
+static DEFINE_CLK(cpu, &clk_cpu_ops);
+
static struct clk_lookup sa11xx_clkregs[] = {
CLKDEV_INIT("sa1111.0", NULL, &clk_gpio27),
CLKDEV_INIT("sa1100-rtc", NULL, NULL),
+ CLKDEV_INIT("sa11x0-fb", NULL, &clk_cpu),
+ CLKDEV_INIT("sa11x0-pcmcia", NULL, &clk_cpu),
+ /* sa1111 names devices using internal offsets, PCMCIA is at 0x1800 */
+ CLKDEV_INIT("1800", NULL, &clk_cpu),
};
static int __init sa11xx_clk_init(void)
diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index 108939f8d053..b90c7d828391 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -30,7 +30,7 @@
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/gpio.h>
-#include <linux/pda_power.h>
+#include <linux/power/gpio-charger.h>
#include <video/sa1100fb.h>
@@ -131,62 +131,24 @@ static struct irda_platform_data collie_ir_data = {
/*
* Collie AC IN
*/
-static int collie_power_init(struct device *dev)
-{
- int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in");
- if (ret)
- goto err_gpio_req;
-
- ret = gpio_direction_input(COLLIE_GPIO_AC_IN);
- if (ret)
- goto err_gpio_in;
-
- return 0;
-
-err_gpio_in:
- gpio_free(COLLIE_GPIO_AC_IN);
-err_gpio_req:
- return ret;
-}
-
-static void collie_power_exit(struct device *dev)
-{
- gpio_free(COLLIE_GPIO_AC_IN);
-}
-
-static int collie_power_ac_online(void)
-{
- return gpio_get_value(COLLIE_GPIO_AC_IN) == 2;
-}
-
static char *collie_ac_supplied_to[] = {
"main-battery",
"backup-battery",
};
-static struct pda_power_pdata collie_power_data = {
- .init = collie_power_init,
- .is_ac_online = collie_power_ac_online,
- .exit = collie_power_exit,
+
+static struct gpio_charger_platform_data collie_power_data = {
+ .name = "charger",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .gpio = COLLIE_GPIO_AC_IN,
.supplied_to = collie_ac_supplied_to,
.num_supplicants = ARRAY_SIZE(collie_ac_supplied_to),
};
-static struct resource collie_power_resource[] = {
- {
- .name = "ac",
- .flags = IORESOURCE_IRQ |
- IORESOURCE_IRQ_HIGHEDGE |
- IORESOURCE_IRQ_LOWEDGE,
- },
-};
-
static struct platform_device collie_power_device = {
- .name = "pda-power",
+ .name = "gpio-charger",
.id = -1,
.dev.platform_data = &collie_power_data,
- .resource = collie_power_resource,
- .num_resources = ARRAY_SIZE(collie_power_resource),
};
#ifdef CONFIG_SHARP_LOCOMO
@@ -420,9 +382,6 @@ static void __init collie_init(void)
GPSR |= _COLLIE_GPIO_UCB1x00_RESET;
- collie_power_resource[0].start = gpio_to_irq(COLLIE_GPIO_AC_IN);
- collie_power_resource[0].end = gpio_to_irq(COLLIE_GPIO_AC_IN);
-
sa11x0_ppc_configure_mcp();
diff --git a/arch/arm/mach-sa1100/include/mach/entry-macro.S b/arch/arm/mach-sa1100/include/mach/entry-macro.S
deleted file mode 100644
index 8cf7630bf024..000000000000
--- a/arch/arm/mach-sa1100/include/mach/entry-macro.S
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * arch/arm/mach-sa1100/include/mach/entry-macro.S
- *
- * Low-level IRQ helper macros for SA1100-based platforms
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
- .macro get_irqnr_preamble, base, tmp
- mov \base, #0xfa000000 @ ICIP = 0xfa050000
- add \base, \base, #0x00050000
- .endm
-
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- ldr \irqstat, [\base] @ get irqs
- ldr \irqnr, [\base, #4] @ ICMR = 0xfa050004
- ands \irqstat, \irqstat, \irqnr
- mov \irqnr, #0
- beq 1001f
- tst \irqstat, #0xff
- moveq \irqstat, \irqstat, lsr #8
- addeq \irqnr, \irqnr, #8
- tsteq \irqstat, #0xff
- moveq \irqstat, \irqstat, lsr #8
- addeq \irqnr, \irqnr, #8
- tsteq \irqstat, #0xff
- moveq \irqstat, \irqstat, lsr #8
- addeq \irqnr, \irqnr, #8
- tst \irqstat, #0x0f
- moveq \irqstat, \irqstat, lsr #4
- addeq \irqnr, \irqnr, #4
- tst \irqstat, #0x03
- moveq \irqstat, \irqstat, lsr #2
- addeq \irqnr, \irqnr, #2
- tst \irqstat, #0x01
- addeqs \irqnr, \irqnr, #1
-1001:
- .endm
-
diff --git a/arch/arm/mach-sa1100/include/mach/irqs.h b/arch/arm/mach-sa1100/include/mach/irqs.h
index 3790298b7142..de0983494c7e 100644
--- a/arch/arm/mach-sa1100/include/mach/irqs.h
+++ b/arch/arm/mach-sa1100/include/mach/irqs.h
@@ -8,56 +8,56 @@
* 2001/11/14 RMK Cleaned up and standardised a lot of the IRQs.
*/
-#define IRQ_GPIO0 0
-#define IRQ_GPIO1 1
-#define IRQ_GPIO2 2
-#define IRQ_GPIO3 3
-#define IRQ_GPIO4 4
-#define IRQ_GPIO5 5
-#define IRQ_GPIO6 6
-#define IRQ_GPIO7 7
-#define IRQ_GPIO8 8
-#define IRQ_GPIO9 9
-#define IRQ_GPIO10 10
-#define IRQ_GPIO11_27 11
-#define IRQ_LCD 12 /* LCD controller */
-#define IRQ_Ser0UDC 13 /* Ser. port 0 UDC */
-#define IRQ_Ser1SDLC 14 /* Ser. port 1 SDLC */
-#define IRQ_Ser1UART 15 /* Ser. port 1 UART */
-#define IRQ_Ser2ICP 16 /* Ser. port 2 ICP */
-#define IRQ_Ser3UART 17 /* Ser. port 3 UART */
-#define IRQ_Ser4MCP 18 /* Ser. port 4 MCP */
-#define IRQ_Ser4SSP 19 /* Ser. port 4 SSP */
-#define IRQ_DMA0 20 /* DMA controller channel 0 */
-#define IRQ_DMA1 21 /* DMA controller channel 1 */
-#define IRQ_DMA2 22 /* DMA controller channel 2 */
-#define IRQ_DMA3 23 /* DMA controller channel 3 */
-#define IRQ_DMA4 24 /* DMA controller channel 4 */
-#define IRQ_DMA5 25 /* DMA controller channel 5 */
-#define IRQ_OST0 26 /* OS Timer match 0 */
-#define IRQ_OST1 27 /* OS Timer match 1 */
-#define IRQ_OST2 28 /* OS Timer match 2 */
-#define IRQ_OST3 29 /* OS Timer match 3 */
-#define IRQ_RTC1Hz 30 /* RTC 1 Hz clock */
-#define IRQ_RTCAlrm 31 /* RTC Alarm */
+#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_GPIO11_27 12
+#define IRQ_LCD 13 /* LCD controller */
+#define IRQ_Ser0UDC 14 /* Ser. port 0 UDC */
+#define IRQ_Ser1SDLC 15 /* Ser. port 1 SDLC */
+#define IRQ_Ser1UART 16 /* Ser. port 1 UART */
+#define IRQ_Ser2ICP 17 /* Ser. port 2 ICP */
+#define IRQ_Ser3UART 18 /* Ser. port 3 UART */
+#define IRQ_Ser4MCP 19 /* Ser. port 4 MCP */
+#define IRQ_Ser4SSP 20 /* Ser. port 4 SSP */
+#define IRQ_DMA0 21 /* DMA controller channel 0 */
+#define IRQ_DMA1 22 /* DMA controller channel 1 */
+#define IRQ_DMA2 23 /* DMA controller channel 2 */
+#define IRQ_DMA3 24 /* DMA controller channel 3 */
+#define IRQ_DMA4 25 /* DMA controller channel 4 */
+#define IRQ_DMA5 26 /* DMA controller channel 5 */
+#define IRQ_OST0 27 /* OS Timer match 0 */
+#define IRQ_OST1 28 /* OS Timer match 1 */
+#define IRQ_OST2 29 /* OS Timer match 2 */
+#define IRQ_OST3 30 /* OS Timer match 3 */
+#define IRQ_RTC1Hz 31 /* RTC 1 Hz clock */
+#define IRQ_RTCAlrm 32 /* RTC Alarm */
-#define IRQ_GPIO11 32
-#define IRQ_GPIO12 33
-#define IRQ_GPIO13 34
-#define IRQ_GPIO14 35
-#define IRQ_GPIO15 36
-#define IRQ_GPIO16 37
-#define IRQ_GPIO17 38
-#define IRQ_GPIO18 39
-#define IRQ_GPIO19 40
-#define IRQ_GPIO20 41
-#define IRQ_GPIO21 42
-#define IRQ_GPIO22 43
-#define IRQ_GPIO23 44
-#define IRQ_GPIO24 45
-#define IRQ_GPIO25 46
-#define IRQ_GPIO26 47
-#define IRQ_GPIO27 48
+#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
/*
* The next 16 interrupts are for board specific purposes. Since
@@ -65,8 +65,8 @@
* these. If you need more, increase IRQ_BOARD_END, but keep it
* within sensible limits. IRQs 49 to 64 are available.
*/
-#define IRQ_BOARD_START 49
-#define IRQ_BOARD_END 65
+#define IRQ_BOARD_START 50
+#define IRQ_BOARD_END 66
/*
* Figure out the MAX IRQ number.
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 2124f1fc2fbe..63e2901db416 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -14,17 +14,73 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/irqdomain.h>
#include <linux/ioport.h>
#include <linux/syscore_ops.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/irq.h>
+#include <asm/exception.h>
#include "generic.h"
/*
+ * We don't need to ACK IRQs on the SA1100 unless they're GPIOs
+ * this is for internal IRQs i.e. from IRQ LCD to RTCAlrm.
+ */
+static void sa1100_mask_irq(struct irq_data *d)
+{
+ ICMR &= ~BIT(d->hwirq);
+}
+
+static void sa1100_unmask_irq(struct irq_data *d)
+{
+ ICMR |= BIT(d->hwirq);
+}
+
+/*
+ * Apart form GPIOs, only the RTC alarm can be a wakeup event.
+ */
+static int sa1100_set_wake(struct irq_data *d, unsigned int on)
+{
+ if (BIT(d->hwirq) == IC_RTCAlrm) {
+ if (on)
+ PWER |= PWER_RTC;
+ else
+ PWER &= ~PWER_RTC;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static struct irq_chip sa1100_normal_chip = {
+ .name = "SC",
+ .irq_ack = sa1100_mask_irq,
+ .irq_mask = sa1100_mask_irq,
+ .irq_unmask = sa1100_unmask_irq,
+ .irq_set_wake = sa1100_set_wake,
+};
+
+static int sa1100_normal_irqdomain_map(struct irq_domain *d,
+ unsigned int irq, irq_hw_number_t hwirq)
+{
+ irq_set_chip_and_handler(irq, &sa1100_normal_chip,
+ handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID);
+
+ return 0;
+}
+
+static struct irq_domain_ops sa1100_normal_irqdomain_ops = {
+ .map = sa1100_normal_irqdomain_map,
+ .xlate = irq_domain_xlate_onetwocell,
+};
+
+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.
@@ -33,20 +89,11 @@ static int GPIO_IRQ_rising_edge;
static int GPIO_IRQ_falling_edge;
static int GPIO_IRQ_mask = (1 << 11) - 1;
-/*
- * To get the GPIO number from an IRQ number
- */
-#define GPIO_11_27_IRQ(i) ((i) - 21)
-#define GPIO11_27_MASK(irq) (1 << GPIO_11_27_IRQ(irq))
-
static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
{
unsigned int mask;
- if (d->irq <= 10)
- mask = 1 << d->irq;
- else
- mask = GPIO11_27_MASK(d->irq);
+ mask = BIT(d->hwirq);
if (type == IRQ_TYPE_PROBE) {
if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask)
@@ -70,41 +117,51 @@ static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
}
/*
- * GPIO IRQs must be acknowledged. This is for IRQs from 0 to 10.
+ * GPIO IRQs must be acknowledged.
*/
-static void sa1100_low_gpio_ack(struct irq_data *d)
-{
- GEDR = (1 << d->irq);
-}
-
-static void sa1100_low_gpio_mask(struct irq_data *d)
-{
- ICMR &= ~(1 << d->irq);
-}
-
-static void sa1100_low_gpio_unmask(struct irq_data *d)
+static void sa1100_gpio_ack(struct irq_data *d)
{
- ICMR |= 1 << d->irq;
+ GEDR = BIT(d->hwirq);
}
-static int sa1100_low_gpio_wake(struct irq_data *d, unsigned int on)
+static int sa1100_gpio_wake(struct irq_data *d, unsigned int on)
{
if (on)
- PWER |= 1 << d->irq;
+ PWER |= BIT(d->hwirq);
else
- PWER &= ~(1 << d->irq);
+ 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_low_gpio_ack,
- .irq_mask = sa1100_low_gpio_mask,
- .irq_unmask = sa1100_low_gpio_unmask,
+ .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_low_gpio_wake,
+ .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
@@ -141,16 +198,9 @@ 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_ack(struct irq_data *d)
-{
- unsigned int mask = GPIO11_27_MASK(d->irq);
-
- GEDR = mask;
-}
-
static void sa1100_high_gpio_mask(struct irq_data *d)
{
- unsigned int mask = GPIO11_27_MASK(d->irq);
+ unsigned int mask = BIT(d->hwirq);
GPIO_IRQ_mask &= ~mask;
@@ -160,7 +210,7 @@ static void sa1100_high_gpio_mask(struct irq_data *d)
static void sa1100_high_gpio_unmask(struct irq_data *d)
{
- unsigned int mask = GPIO11_27_MASK(d->irq);
+ unsigned int mask = BIT(d->hwirq);
GPIO_IRQ_mask |= mask;
@@ -168,61 +218,32 @@ static void sa1100_high_gpio_unmask(struct irq_data *d)
GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
}
-static int sa1100_high_gpio_wake(struct irq_data *d, unsigned int on)
-{
- if (on)
- PWER |= GPIO11_27_MASK(d->irq);
- else
- PWER &= ~GPIO11_27_MASK(d->irq);
- return 0;
-}
-
static struct irq_chip sa1100_high_gpio_chip = {
.name = "GPIO-h",
- .irq_ack = sa1100_high_gpio_ack,
+ .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_high_gpio_wake,
+ .irq_set_wake = sa1100_gpio_wake,
};
-/*
- * We don't need to ACK IRQs on the SA1100 unless they're GPIOs
- * this is for internal IRQs i.e. from 11 to 31.
- */
-static void sa1100_mask_irq(struct irq_data *d)
-{
- ICMR &= ~(1 << d->irq);
-}
-
-static void sa1100_unmask_irq(struct irq_data *d)
+static int sa1100_high_gpio_irqdomain_map(struct irq_domain *d,
+ unsigned int irq, irq_hw_number_t hwirq)
{
- ICMR |= (1 << d->irq);
-}
+ irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
+ handle_edge_irq);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-/*
- * Apart form GPIOs, only the RTC alarm can be a wakeup event.
- */
-static int sa1100_set_wake(struct irq_data *d, unsigned int on)
-{
- if (d->irq == IRQ_RTCAlrm) {
- if (on)
- PWER |= PWER_RTC;
- else
- PWER &= ~PWER_RTC;
- return 0;
- }
- return -EINVAL;
+ return 0;
}
-static struct irq_chip sa1100_normal_chip = {
- .name = "SC",
- .irq_ack = sa1100_mask_irq,
- .irq_mask = sa1100_mask_irq,
- .irq_unmask = sa1100_unmask_irq,
- .irq_set_wake = sa1100_set_wake,
+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");
@@ -291,10 +312,25 @@ static int __init sa1100irq_init_devicefs(void)
device_initcall(sa1100irq_init_devicefs);
-void __init sa1100_init_irq(void)
+static asmlinkage void __exception_irq_entry
+sa1100_handle_irq(struct pt_regs *regs)
{
- unsigned int irq;
+ uint32_t icip, icmr, mask;
+
+ do {
+ icip = (ICIP);
+ icmr = (ICMR);
+ mask = icip & icmr;
+
+ if (mask == 0)
+ break;
+
+ handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0, regs);
+ } while (1);
+}
+void __init sa1100_init_irq(void)
+{
request_resource(&iomem_resource, &irq_resource);
/* disable all IRQs */
@@ -314,29 +350,24 @@ void __init sa1100_init_irq(void)
*/
ICCR = 1;
- for (irq = 0; irq <= 10; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
+ sa1100_low_gpio_irqdomain = irq_domain_add_legacy(NULL,
+ 11, IRQ_GPIO0, 0,
+ &sa1100_low_gpio_irqdomain_ops, NULL);
- for (irq = 12; irq <= 31; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_normal_chip,
- handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
+ sa1100_normal_irqdomain = irq_domain_add_legacy(NULL,
+ 21, IRQ_GPIO11_27, 11,
+ &sa1100_normal_irqdomain_ops, NULL);
- for (irq = 32; irq <= 48; irq++) {
- irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
- handle_edge_irq);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
- }
+ 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_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
+ set_handle_irq(sa1100_handle_irq);
+
sa1100_init_gpio();
}