help
Base platform code for Samsung's S5P series SoC.
-config S5P_EXT_INT
- bool
- help
- Use the external interrupts (other than GPIO interrupts.)
- Note: Do not choose this for S5P6440 and S5P6450.
-
-config S5P_GPIO_INT
- bool
- help
- Common code for the GPIO interrupts (other than external interrupts.)
-
config S5P_HRT
bool
select SAMSUNG_DEV_PWM
# Core files
-obj-y += irq.o
-obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o
-obj-$(CONFIG_S5P_GPIO_INT) += irq-gpioint.o
obj-$(CONFIG_S5P_PM) += pm.o irq-pm.o
obj-$(CONFIG_S5P_SLEEP) += sleep.o
obj-$(CONFIG_S5P_HRT) += s5p-time.o
+++ /dev/null
-/* linux/arch/arm/plat-s5p/irq-eint.c
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * S5P - IRQ EINT support
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/device.h>
-#include <linux/gpio.h>
-
-#include <asm/hardware/vic.h>
-
-#include <plat/regs-irqtype.h>
-
-#include <mach/map.h>
-#include <plat/cpu.h>
-#include <plat/pm.h>
-
-#include <plat/gpio-cfg.h>
-#include <mach/regs-gpio.h>
-
-static inline void s5p_irq_eint_mask(struct irq_data *data)
-{
- u32 mask;
-
- mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(data->irq)));
- mask |= eint_irq_to_bit(data->irq);
- __raw_writel(mask, S5P_EINT_MASK(EINT_REG_NR(data->irq)));
-}
-
-static void s5p_irq_eint_unmask(struct irq_data *data)
-{
- u32 mask;
-
- mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(data->irq)));
- mask &= ~(eint_irq_to_bit(data->irq));
- __raw_writel(mask, S5P_EINT_MASK(EINT_REG_NR(data->irq)));
-}
-
-static inline void s5p_irq_eint_ack(struct irq_data *data)
-{
- __raw_writel(eint_irq_to_bit(data->irq),
- S5P_EINT_PEND(EINT_REG_NR(data->irq)));
-}
-
-static void s5p_irq_eint_maskack(struct irq_data *data)
-{
- /* compiler should in-line these */
- s5p_irq_eint_mask(data);
- s5p_irq_eint_ack(data);
-}
-
-static int s5p_irq_eint_set_type(struct irq_data *data, unsigned int type)
-{
- int offs = EINT_OFFSET(data->irq);
- int shift;
- u32 ctrl, mask;
- u32 newvalue = 0;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- newvalue = S5P_IRQ_TYPE_EDGE_RISING;
- break;
-
- case IRQ_TYPE_EDGE_FALLING:
- newvalue = S5P_IRQ_TYPE_EDGE_FALLING;
- break;
-
- case IRQ_TYPE_EDGE_BOTH:
- newvalue = S5P_IRQ_TYPE_EDGE_BOTH;
- break;
-
- case IRQ_TYPE_LEVEL_LOW:
- newvalue = S5P_IRQ_TYPE_LEVEL_LOW;
- break;
-
- case IRQ_TYPE_LEVEL_HIGH:
- newvalue = S5P_IRQ_TYPE_LEVEL_HIGH;
- break;
-
- default:
- printk(KERN_ERR "No such irq type %d", type);
- return -EINVAL;
- }
-
- shift = (offs & 0x7) * 4;
- mask = 0x7 << shift;
-
- ctrl = __raw_readl(S5P_EINT_CON(EINT_REG_NR(data->irq)));
- ctrl &= ~mask;
- ctrl |= newvalue << shift;
- __raw_writel(ctrl, S5P_EINT_CON(EINT_REG_NR(data->irq)));
-
- if ((0 <= offs) && (offs < 8))
- s3c_gpio_cfgpin(EINT_GPIO_0(offs & 0x7), EINT_MODE);
-
- else if ((8 <= offs) && (offs < 16))
- s3c_gpio_cfgpin(EINT_GPIO_1(offs & 0x7), EINT_MODE);
-
- else if ((16 <= offs) && (offs < 24))
- s3c_gpio_cfgpin(EINT_GPIO_2(offs & 0x7), EINT_MODE);
-
- else if ((24 <= offs) && (offs < 32))
- s3c_gpio_cfgpin(EINT_GPIO_3(offs & 0x7), EINT_MODE);
-
- else
- printk(KERN_ERR "No such irq number %d", offs);
-
- return 0;
-}
-
-static struct irq_chip s5p_irq_eint = {
- .name = "s5p-eint",
- .irq_mask = s5p_irq_eint_mask,
- .irq_unmask = s5p_irq_eint_unmask,
- .irq_mask_ack = s5p_irq_eint_maskack,
- .irq_ack = s5p_irq_eint_ack,
- .irq_set_type = s5p_irq_eint_set_type,
-#ifdef CONFIG_PM
- .irq_set_wake = s3c_irqext_wake,
-#endif
-};
-
-/* s5p_irq_demux_eint
- *
- * This function demuxes the IRQ from the group0 external interrupts,
- * from EINTs 16 to 31. It is designed to be inlined into the specific
- * handler s5p_irq_demux_eintX_Y.
- *
- * Each EINT pend/mask registers handle eight of them.
- */
-static inline void s5p_irq_demux_eint(unsigned int start)
-{
- 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 &= ~mask;
- status &= 0xff;
-
- while (status) {
- irq = fls(status) - 1;
- generic_handle_irq(irq + start);
- status &= ~(1 << irq);
- }
-}
-
-static void s5p_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
-{
- s5p_irq_demux_eint(IRQ_EINT(16));
- s5p_irq_demux_eint(IRQ_EINT(24));
-}
-
-static inline void s5p_irq_vic_eint_mask(struct irq_data *data)
-{
- void __iomem *base = irq_data_get_irq_chip_data(data);
-
- s5p_irq_eint_mask(data);
- writel(1 << EINT_OFFSET(data->irq), base + VIC_INT_ENABLE_CLEAR);
-}
-
-static void s5p_irq_vic_eint_unmask(struct irq_data *data)
-{
- void __iomem *base = irq_data_get_irq_chip_data(data);
-
- s5p_irq_eint_unmask(data);
- writel(1 << EINT_OFFSET(data->irq), base + VIC_INT_ENABLE);
-}
-
-static inline void s5p_irq_vic_eint_ack(struct irq_data *data)
-{
- __raw_writel(eint_irq_to_bit(data->irq),
- S5P_EINT_PEND(EINT_REG_NR(data->irq)));
-}
-
-static void s5p_irq_vic_eint_maskack(struct irq_data *data)
-{
- s5p_irq_vic_eint_mask(data);
- s5p_irq_vic_eint_ack(data);
-}
-
-static struct irq_chip s5p_irq_vic_eint = {
- .name = "s5p_vic_eint",
- .irq_mask = s5p_irq_vic_eint_mask,
- .irq_unmask = s5p_irq_vic_eint_unmask,
- .irq_mask_ack = s5p_irq_vic_eint_maskack,
- .irq_ack = s5p_irq_vic_eint_ack,
- .irq_set_type = s5p_irq_eint_set_type,
-#ifdef CONFIG_PM
- .irq_set_wake = s3c_irqext_wake,
-#endif
-};
-
-static int __init s5p_init_irq_eint(void)
-{
- int irq;
-
- for (irq = IRQ_EINT(0); irq <= IRQ_EINT(15); irq++)
- irq_set_chip(irq, &s5p_irq_vic_eint);
-
- for (irq = IRQ_EINT(16); irq <= IRQ_EINT(31); irq++) {
- irq_set_chip_and_handler(irq, &s5p_irq_eint, handle_level_irq);
- set_irq_flags(irq, IRQF_VALID);
- }
-
- irq_set_chained_handler(IRQ_EINT16_31, s5p_irq_demux_eint16_31);
- return 0;
-}
-
-arch_initcall(s5p_init_irq_eint);
+++ /dev/null
-/* linux/arch/arm/plat-s5p/irq-gpioint.c
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- * Author: Kyungmin Park <kyungmin.park@samsung.com>
- * Author: Joonyoung Shim <jy0922.shim@samsung.com>
- * Author: Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-#include <linux/slab.h>
-
-#include <mach/map.h>
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-
-#include <asm/mach/irq.h>
-
-#define GPIO_BASE(chip) (((unsigned long)(chip)->base) & 0xFFFFF000u)
-
-#define CON_OFFSET 0x700
-#define MASK_OFFSET 0x900
-#define PEND_OFFSET 0xA00
-#define REG_OFFSET(x) ((x) << 2)
-
-struct s5p_gpioint_bank {
- struct list_head list;
- int start;
- int nr_groups;
- int irq;
- struct samsung_gpio_chip **chips;
- void (*handler)(unsigned int, struct irq_desc *);
-};
-
-static LIST_HEAD(banks);
-
-static int s5p_gpioint_set_type(struct irq_data *d, unsigned int type)
-{
- struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
- struct irq_chip_type *ct = gc->chip_types;
- unsigned int shift = (d->irq - gc->irq_base) << 2;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- type = S5P_IRQ_TYPE_EDGE_RISING;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- type = S5P_IRQ_TYPE_EDGE_FALLING;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- type = S5P_IRQ_TYPE_EDGE_BOTH;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- type = S5P_IRQ_TYPE_LEVEL_HIGH;
- break;
- case IRQ_TYPE_LEVEL_LOW:
- type = S5P_IRQ_TYPE_LEVEL_LOW;
- break;
- case IRQ_TYPE_NONE:
- default:
- printk(KERN_WARNING "No irq type\n");
- return -EINVAL;
- }
-
- gc->type_cache &= ~(0x7 << shift);
- gc->type_cache |= type << shift;
- writel(gc->type_cache, gc->reg_base + ct->regs.type);
- return 0;
-}
-
-static void s5p_gpioint_handler(unsigned int irq, struct irq_desc *desc)
-{
- struct s5p_gpioint_bank *bank = irq_get_handler_data(irq);
- int group, pend_offset, mask_offset;
- unsigned int pend, mask;
-
- struct irq_chip *chip = irq_get_chip(irq);
- chained_irq_enter(chip, desc);
-
- for (group = 0; group < bank->nr_groups; group++) {
- struct samsung_gpio_chip *chip = bank->chips[group];
- if (!chip)
- continue;
-
- pend_offset = REG_OFFSET(group);
- pend = __raw_readl(GPIO_BASE(chip) + PEND_OFFSET + pend_offset);
- if (!pend)
- continue;
-
- mask_offset = REG_OFFSET(group);
- mask = __raw_readl(GPIO_BASE(chip) + MASK_OFFSET + mask_offset);
- pend &= ~mask;
-
- while (pend) {
- int offset = fls(pend) - 1;
- int real_irq = chip->irq_base + offset;
- generic_handle_irq(real_irq);
- pend &= ~BIT(offset);
- }
- }
- chained_irq_exit(chip, desc);
-}
-
-static __init int s5p_gpioint_add(struct samsung_gpio_chip *chip)
-{
- static int used_gpioint_groups = 0;
- int group = chip->group;
- struct s5p_gpioint_bank *b, *bank = NULL;
- struct irq_chip_generic *gc;
- struct irq_chip_type *ct;
-
- if (used_gpioint_groups >= S5P_GPIOINT_GROUP_COUNT)
- return -ENOMEM;
-
- list_for_each_entry(b, &banks, list) {
- if (group >= b->start && group < b->start + b->nr_groups) {
- bank = b;
- break;
- }
- }
- if (!bank)
- return -EINVAL;
-
- if (!bank->handler) {
- bank->chips = kzalloc(sizeof(struct samsung_gpio_chip *) *
- bank->nr_groups, GFP_KERNEL);
- if (!bank->chips)
- return -ENOMEM;
-
- irq_set_chained_handler(bank->irq, s5p_gpioint_handler);
- irq_set_handler_data(bank->irq, bank);
- bank->handler = s5p_gpioint_handler;
- printk(KERN_INFO "Registered chained gpio int handler for interrupt %d.\n",
- bank->irq);
- }
-
- /*
- * chained GPIO irq has been successfully registered, allocate new gpio
- * int group and assign irq nubmers
- */
- chip->irq_base = S5P_GPIOINT_BASE +
- used_gpioint_groups * S5P_GPIOINT_GROUP_SIZE;
- used_gpioint_groups++;
-
- bank->chips[group - bank->start] = chip;
-
- gc = irq_alloc_generic_chip("s5p_gpioint", 1, chip->irq_base,
- (void __iomem *)GPIO_BASE(chip),
- handle_level_irq);
- if (!gc)
- return -ENOMEM;
- ct = gc->chip_types;
- ct->chip.irq_ack = irq_gc_ack_set_bit;
- ct->chip.irq_mask = irq_gc_mask_set_bit;
- ct->chip.irq_unmask = irq_gc_mask_clr_bit;
- ct->chip.irq_set_type = s5p_gpioint_set_type,
- ct->regs.ack = PEND_OFFSET + REG_OFFSET(group - bank->start);
- ct->regs.mask = MASK_OFFSET + REG_OFFSET(group - bank->start);
- ct->regs.type = CON_OFFSET + REG_OFFSET(group - bank->start);
- irq_setup_generic_chip(gc, IRQ_MSK(chip->chip.ngpio),
- IRQ_GC_INIT_MASK_CACHE,
- IRQ_NOREQUEST | IRQ_NOPROBE, 0);
- return 0;
-}
-
-int __init s5p_register_gpio_interrupt(int pin)
-{
- struct samsung_gpio_chip *my_chip = samsung_gpiolib_getchip(pin);
- int offset, group;
- int ret;
-
- if (!my_chip)
- return -EINVAL;
-
- offset = pin - my_chip->chip.base;
- group = my_chip->group;
-
- /* check if the group has been already registered */
- if (my_chip->irq_base)
- return my_chip->irq_base + offset;
-
- /* register gpio group */
- ret = s5p_gpioint_add(my_chip);
- if (ret == 0) {
- my_chip->chip.to_irq = samsung_gpiolib_to_irq;
- printk(KERN_INFO "Registered interrupt support for gpio group %d.\n",
- group);
- return my_chip->irq_base + offset;
- }
- return ret;
-}
-
-int __init s5p_register_gpioint_bank(int chain_irq, int start, int nr_groups)
-{
- struct s5p_gpioint_bank *bank;
-
- bank = kzalloc(sizeof(*bank), GFP_KERNEL);
- if (!bank)
- return -ENOMEM;
-
- bank->start = start;
- bank->nr_groups = nr_groups;
- bank->irq = chain_irq;
-
- list_add_tail(&bank->list, &banks);
- return 0;
-}
+++ /dev/null
-/* arch/arm/plat-s5p/irq.c
- *
- * Copyright (c) 2009 Samsung Electronics Co., Ltd.
- * http://www.samsung.com/
- *
- * S5P - Interrupt handling
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-
-#include <asm/hardware/vic.h>
-
-#include <mach/map.h>
-#include <plat/regs-timer.h>
-#include <plat/cpu.h>
-#include <plat/irq-vic-timer.h>
-
-void __init s5p_init_irq(u32 *vic, u32 num_vic)
-{
-#ifdef CONFIG_ARM_VIC
- int irq;
-
- /* initialize the VICs */
- for (irq = 0; irq < num_vic; irq++)
- vic_init(VA_VIC(irq), VIC_BASE(irq), vic[irq], 0);
-#endif
-
- s3c_init_vic_timer_irq(5, IRQ_TIMER0);
-}
help
Internal configuration to build the VIC timer interrupt code.
+config S5P_IRQ
+ def_bool (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS)
+ help
+ Support common interrup part for ARCH_S5P and ARCH_EXYNOS SoCs
+
+config S5P_EXT_INT
+ bool
+ help
+ Use the external interrupts (other than GPIO interrupts.)
+ Note: Do not choose this for S5P6440 and S5P6450.
+
+config S5P_GPIO_INT
+ bool
+ help
+ Common code for the GPIO interrupts (other than external interrupts.)
+
# options for gpio configuration support
config SAMSUNG_GPIOLIB_4BIT
obj-$(CONFIG_S5P_CLOCK) += s5p-clock.o
obj-$(CONFIG_SAMSUNG_IRQ_VIC_TIMER) += irq-vic-timer.o
+obj-$(CONFIG_S5P_IRQ) += s5p-irq.o
+obj-$(CONFIG_S5P_EXT_INT) += s5p-irq-eint.o
+obj-$(CONFIG_S5P_GPIO_INT) += s5p-irq-gpioint.o
# ADC
--- /dev/null
+/*
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * S5P - IRQ EINT support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/device.h>
+#include <linux/gpio.h>
+
+#include <asm/hardware/vic.h>
+
+#include <plat/regs-irqtype.h>
+
+#include <mach/map.h>
+#include <plat/cpu.h>
+#include <plat/pm.h>
+
+#include <plat/gpio-cfg.h>
+#include <mach/regs-gpio.h>
+
+static inline void s5p_irq_eint_mask(struct irq_data *data)
+{
+ u32 mask;
+
+ mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(data->irq)));
+ mask |= eint_irq_to_bit(data->irq);
+ __raw_writel(mask, S5P_EINT_MASK(EINT_REG_NR(data->irq)));
+}
+
+static void s5p_irq_eint_unmask(struct irq_data *data)
+{
+ u32 mask;
+
+ mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(data->irq)));
+ mask &= ~(eint_irq_to_bit(data->irq));
+ __raw_writel(mask, S5P_EINT_MASK(EINT_REG_NR(data->irq)));
+}
+
+static inline void s5p_irq_eint_ack(struct irq_data *data)
+{
+ __raw_writel(eint_irq_to_bit(data->irq),
+ S5P_EINT_PEND(EINT_REG_NR(data->irq)));
+}
+
+static void s5p_irq_eint_maskack(struct irq_data *data)
+{
+ /* compiler should in-line these */
+ s5p_irq_eint_mask(data);
+ s5p_irq_eint_ack(data);
+}
+
+static int s5p_irq_eint_set_type(struct irq_data *data, unsigned int type)
+{
+ int offs = EINT_OFFSET(data->irq);
+ int shift;
+ u32 ctrl, mask;
+ u32 newvalue = 0;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ newvalue = S5P_IRQ_TYPE_EDGE_RISING;
+ break;
+
+ case IRQ_TYPE_EDGE_FALLING:
+ newvalue = S5P_IRQ_TYPE_EDGE_FALLING;
+ break;
+
+ case IRQ_TYPE_EDGE_BOTH:
+ newvalue = S5P_IRQ_TYPE_EDGE_BOTH;
+ break;
+
+ case IRQ_TYPE_LEVEL_LOW:
+ newvalue = S5P_IRQ_TYPE_LEVEL_LOW;
+ break;
+
+ case IRQ_TYPE_LEVEL_HIGH:
+ newvalue = S5P_IRQ_TYPE_LEVEL_HIGH;
+ break;
+
+ default:
+ printk(KERN_ERR "No such irq type %d", type);
+ return -EINVAL;
+ }
+
+ shift = (offs & 0x7) * 4;
+ mask = 0x7 << shift;
+
+ ctrl = __raw_readl(S5P_EINT_CON(EINT_REG_NR(data->irq)));
+ ctrl &= ~mask;
+ ctrl |= newvalue << shift;
+ __raw_writel(ctrl, S5P_EINT_CON(EINT_REG_NR(data->irq)));
+
+ if ((0 <= offs) && (offs < 8))
+ s3c_gpio_cfgpin(EINT_GPIO_0(offs & 0x7), EINT_MODE);
+
+ else if ((8 <= offs) && (offs < 16))
+ s3c_gpio_cfgpin(EINT_GPIO_1(offs & 0x7), EINT_MODE);
+
+ else if ((16 <= offs) && (offs < 24))
+ s3c_gpio_cfgpin(EINT_GPIO_2(offs & 0x7), EINT_MODE);
+
+ else if ((24 <= offs) && (offs < 32))
+ s3c_gpio_cfgpin(EINT_GPIO_3(offs & 0x7), EINT_MODE);
+
+ else
+ printk(KERN_ERR "No such irq number %d", offs);
+
+ return 0;
+}
+
+static struct irq_chip s5p_irq_eint = {
+ .name = "s5p-eint",
+ .irq_mask = s5p_irq_eint_mask,
+ .irq_unmask = s5p_irq_eint_unmask,
+ .irq_mask_ack = s5p_irq_eint_maskack,
+ .irq_ack = s5p_irq_eint_ack,
+ .irq_set_type = s5p_irq_eint_set_type,
+#ifdef CONFIG_PM
+ .irq_set_wake = s3c_irqext_wake,
+#endif
+};
+
+/* s5p_irq_demux_eint
+ *
+ * This function demuxes the IRQ from the group0 external interrupts,
+ * from EINTs 16 to 31. It is designed to be inlined into the specific
+ * handler s5p_irq_demux_eintX_Y.
+ *
+ * Each EINT pend/mask registers handle eight of them.
+ */
+static inline void s5p_irq_demux_eint(unsigned int start)
+{
+ 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 &= ~mask;
+ status &= 0xff;
+
+ while (status) {
+ irq = fls(status) - 1;
+ generic_handle_irq(irq + start);
+ status &= ~(1 << irq);
+ }
+}
+
+static void s5p_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
+{
+ s5p_irq_demux_eint(IRQ_EINT(16));
+ s5p_irq_demux_eint(IRQ_EINT(24));
+}
+
+static inline void s5p_irq_vic_eint_mask(struct irq_data *data)
+{
+ void __iomem *base = irq_data_get_irq_chip_data(data);
+
+ s5p_irq_eint_mask(data);
+ writel(1 << EINT_OFFSET(data->irq), base + VIC_INT_ENABLE_CLEAR);
+}
+
+static void s5p_irq_vic_eint_unmask(struct irq_data *data)
+{
+ void __iomem *base = irq_data_get_irq_chip_data(data);
+
+ s5p_irq_eint_unmask(data);
+ writel(1 << EINT_OFFSET(data->irq), base + VIC_INT_ENABLE);
+}
+
+static inline void s5p_irq_vic_eint_ack(struct irq_data *data)
+{
+ __raw_writel(eint_irq_to_bit(data->irq),
+ S5P_EINT_PEND(EINT_REG_NR(data->irq)));
+}
+
+static void s5p_irq_vic_eint_maskack(struct irq_data *data)
+{
+ s5p_irq_vic_eint_mask(data);
+ s5p_irq_vic_eint_ack(data);
+}
+
+static struct irq_chip s5p_irq_vic_eint = {
+ .name = "s5p_vic_eint",
+ .irq_mask = s5p_irq_vic_eint_mask,
+ .irq_unmask = s5p_irq_vic_eint_unmask,
+ .irq_mask_ack = s5p_irq_vic_eint_maskack,
+ .irq_ack = s5p_irq_vic_eint_ack,
+ .irq_set_type = s5p_irq_eint_set_type,
+#ifdef CONFIG_PM
+ .irq_set_wake = s3c_irqext_wake,
+#endif
+};
+
+static int __init s5p_init_irq_eint(void)
+{
+ int irq;
+
+ for (irq = IRQ_EINT(0); irq <= IRQ_EINT(15); irq++)
+ irq_set_chip(irq, &s5p_irq_vic_eint);
+
+ for (irq = IRQ_EINT(16); irq <= IRQ_EINT(31); irq++) {
+ irq_set_chip_and_handler(irq, &s5p_irq_eint, handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+
+ irq_set_chained_handler(IRQ_EINT16_31, s5p_irq_demux_eint16_31);
+ return 0;
+}
+
+arch_initcall(s5p_init_irq_eint);
--- /dev/null
+/*
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * Author: Kyungmin Park <kyungmin.park@samsung.com>
+ * Author: Joonyoung Shim <jy0922.shim@samsung.com>
+ * Author: Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+
+#include <mach/map.h>
+#include <plat/gpio-core.h>
+#include <plat/gpio-cfg.h>
+
+#include <asm/mach/irq.h>
+
+#define GPIO_BASE(chip) (((unsigned long)(chip)->base) & 0xFFFFF000u)
+
+#define CON_OFFSET 0x700
+#define MASK_OFFSET 0x900
+#define PEND_OFFSET 0xA00
+#define REG_OFFSET(x) ((x) << 2)
+
+struct s5p_gpioint_bank {
+ struct list_head list;
+ int start;
+ int nr_groups;
+ int irq;
+ struct samsung_gpio_chip **chips;
+ void (*handler)(unsigned int, struct irq_desc *);
+};
+
+static LIST_HEAD(banks);
+
+static int s5p_gpioint_set_type(struct irq_data *d, unsigned int type)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = gc->chip_types;
+ unsigned int shift = (d->irq - gc->irq_base) << 2;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ type = S5P_IRQ_TYPE_EDGE_RISING;
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ type = S5P_IRQ_TYPE_EDGE_FALLING;
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ type = S5P_IRQ_TYPE_EDGE_BOTH;
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ type = S5P_IRQ_TYPE_LEVEL_HIGH;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ type = S5P_IRQ_TYPE_LEVEL_LOW;
+ break;
+ case IRQ_TYPE_NONE:
+ default:
+ printk(KERN_WARNING "No irq type\n");
+ return -EINVAL;
+ }
+
+ gc->type_cache &= ~(0x7 << shift);
+ gc->type_cache |= type << shift;
+ writel(gc->type_cache, gc->reg_base + ct->regs.type);
+ return 0;
+}
+
+static void s5p_gpioint_handler(unsigned int irq, struct irq_desc *desc)
+{
+ struct s5p_gpioint_bank *bank = irq_get_handler_data(irq);
+ int group, pend_offset, mask_offset;
+ unsigned int pend, mask;
+
+ struct irq_chip *chip = irq_get_chip(irq);
+ chained_irq_enter(chip, desc);
+
+ for (group = 0; group < bank->nr_groups; group++) {
+ struct samsung_gpio_chip *chip = bank->chips[group];
+ if (!chip)
+ continue;
+
+ pend_offset = REG_OFFSET(group);
+ pend = __raw_readl(GPIO_BASE(chip) + PEND_OFFSET + pend_offset);
+ if (!pend)
+ continue;
+
+ mask_offset = REG_OFFSET(group);
+ mask = __raw_readl(GPIO_BASE(chip) + MASK_OFFSET + mask_offset);
+ pend &= ~mask;
+
+ while (pend) {
+ int offset = fls(pend) - 1;
+ int real_irq = chip->irq_base + offset;
+ generic_handle_irq(real_irq);
+ pend &= ~BIT(offset);
+ }
+ }
+ chained_irq_exit(chip, desc);
+}
+
+static __init int s5p_gpioint_add(struct samsung_gpio_chip *chip)
+{
+ static int used_gpioint_groups = 0;
+ int group = chip->group;
+ struct s5p_gpioint_bank *b, *bank = NULL;
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+
+ if (used_gpioint_groups >= S5P_GPIOINT_GROUP_COUNT)
+ return -ENOMEM;
+
+ list_for_each_entry(b, &banks, list) {
+ if (group >= b->start && group < b->start + b->nr_groups) {
+ bank = b;
+ break;
+ }
+ }
+ if (!bank)
+ return -EINVAL;
+
+ if (!bank->handler) {
+ bank->chips = kzalloc(sizeof(struct samsung_gpio_chip *) *
+ bank->nr_groups, GFP_KERNEL);
+ if (!bank->chips)
+ return -ENOMEM;
+
+ irq_set_chained_handler(bank->irq, s5p_gpioint_handler);
+ irq_set_handler_data(bank->irq, bank);
+ bank->handler = s5p_gpioint_handler;
+ printk(KERN_INFO "Registered chained gpio int handler for interrupt %d.\n",
+ bank->irq);
+ }
+
+ /*
+ * chained GPIO irq has been successfully registered, allocate new gpio
+ * int group and assign irq nubmers
+ */
+ chip->irq_base = S5P_GPIOINT_BASE +
+ used_gpioint_groups * S5P_GPIOINT_GROUP_SIZE;
+ used_gpioint_groups++;
+
+ bank->chips[group - bank->start] = chip;
+
+ gc = irq_alloc_generic_chip("s5p_gpioint", 1, chip->irq_base,
+ (void __iomem *)GPIO_BASE(chip),
+ handle_level_irq);
+ if (!gc)
+ return -ENOMEM;
+ ct = gc->chip_types;
+ ct->chip.irq_ack = irq_gc_ack_set_bit;
+ ct->chip.irq_mask = irq_gc_mask_set_bit;
+ ct->chip.irq_unmask = irq_gc_mask_clr_bit;
+ ct->chip.irq_set_type = s5p_gpioint_set_type,
+ ct->regs.ack = PEND_OFFSET + REG_OFFSET(group - bank->start);
+ ct->regs.mask = MASK_OFFSET + REG_OFFSET(group - bank->start);
+ ct->regs.type = CON_OFFSET + REG_OFFSET(group - bank->start);
+ irq_setup_generic_chip(gc, IRQ_MSK(chip->chip.ngpio),
+ IRQ_GC_INIT_MASK_CACHE,
+ IRQ_NOREQUEST | IRQ_NOPROBE, 0);
+ return 0;
+}
+
+int __init s5p_register_gpio_interrupt(int pin)
+{
+ struct samsung_gpio_chip *my_chip = samsung_gpiolib_getchip(pin);
+ int offset, group;
+ int ret;
+
+ if (!my_chip)
+ return -EINVAL;
+
+ offset = pin - my_chip->chip.base;
+ group = my_chip->group;
+
+ /* check if the group has been already registered */
+ if (my_chip->irq_base)
+ return my_chip->irq_base + offset;
+
+ /* register gpio group */
+ ret = s5p_gpioint_add(my_chip);
+ if (ret == 0) {
+ my_chip->chip.to_irq = samsung_gpiolib_to_irq;
+ printk(KERN_INFO "Registered interrupt support for gpio group %d.\n",
+ group);
+ return my_chip->irq_base + offset;
+ }
+ return ret;
+}
+
+int __init s5p_register_gpioint_bank(int chain_irq, int start, int nr_groups)
+{
+ struct s5p_gpioint_bank *bank;
+
+ bank = kzalloc(sizeof(*bank), GFP_KERNEL);
+ if (!bank)
+ return -ENOMEM;
+
+ bank->start = start;
+ bank->nr_groups = nr_groups;
+ bank->irq = chain_irq;
+
+ list_add_tail(&bank->list, &banks);
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2009 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * S5P - Interrupt handling
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <asm/hardware/vic.h>
+
+#include <mach/map.h>
+#include <plat/regs-timer.h>
+#include <plat/cpu.h>
+#include <plat/irq-vic-timer.h>
+
+void __init s5p_init_irq(u32 *vic, u32 num_vic)
+{
+#ifdef CONFIG_ARM_VIC
+ int irq;
+
+ /* initialize the VICs */
+ for (irq = 0; irq < num_vic; irq++)
+ vic_init(VA_VIC(irq), VIC_BASE(irq), vic[irq], 0);
+#endif
+
+ s3c_init_vic_timer_irq(5, IRQ_TIMER0);
+}
projects / deliverable / linux.git / commitdiff
