From: Jongpill Lee <[email protected]> Add EINT for Samsung S5P SoCs and EINT Group for S5PV210
Signed-off-by: Jongpill Lee <[email protected]> Signed-off-by: Kukjin Kim <[email protected]> --- arch/arm/mach-s5pv210/Makefile | 2 +- arch/arm/mach-s5pv210/include/mach/irqs.h | 8 +- arch/arm/mach-s5pv210/irq-eint-group.c | 521 +++++++++++++++++++++++++++++ arch/arm/plat-s5p/Makefile | 2 +- arch/arm/plat-s5p/irq-eint.c | 229 +++++++++++++ 5 files changed, 759 insertions(+), 3 deletions(-) create mode 100644 arch/arm/mach-s5pv210/irq-eint-group.c create mode 100644 arch/arm/plat-s5p/irq-eint.c diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile index cb959ea..f1772ed 100644 --- a/arch/arm/mach-s5pv210/Makefile +++ b/arch/arm/mach-s5pv210/Makefile @@ -12,7 +12,7 @@ obj- := # Core support for S5PV210 system -obj-$(CONFIG_CPU_S5PV210) += cpu.o init.o clock.o gpio.o +obj-$(CONFIG_CPU_S5PV210) += cpu.o init.o clock.o gpio.o irq-eint-group.o # machine support diff --git a/arch/arm/mach-s5pv210/include/mach/irqs.h b/arch/arm/mach-s5pv210/include/mach/irqs.h index e8e43db..85c140b 100644 --- a/arch/arm/mach-s5pv210/include/mach/irqs.h +++ b/arch/arm/mach-s5pv210/include/mach/irqs.h @@ -134,11 +134,17 @@ #define IRQ_MDNIE3 S5P_IRQ_VIC3(8) #define IRQ_VIC_END S5P_IRQ_VIC3(31) -#define S5P_IRQ_EINT_BASE (IRQ_VIC_END + 1) +/* EINT */ +#define S5P_IRQ_EINT_BASE (IRQ_VIC_END + 1) #define S5P_EINT(x) ((x) + S5P_IRQ_EINT_BASE) #define IRQ_EINT(x) S5P_EINT(x) +#define S5P_EINT_SET0(x) S5PV210_GPH0(x) +#define S5P_EINT_SET1(x) S5PV210_GPH1(x) +#define S5P_EINT_SET2(x) S5PV210_GPH2(x) +#define S5P_EINT_SET3(x) S5PV210_GPH3(x) + /* Next the external interrupt groups. These are similar to the IRQ_EINT(x) * that they are sourced from the GPIO pins but with a different scheme for * priority and source indication. diff --git a/arch/arm/mach-s5pv210/irq-eint-group.c b/arch/arm/mach-s5pv210/irq-eint-group.c new file mode 100644 index 0000000..4a5c3cd --- /dev/null +++ b/arch/arm/mach-s5pv210/irq-eint-group.c @@ -0,0 +1,521 @@ +/* linux/arch/arm/mach-s5pv210/irq-eint-group.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV210 - IRQ EINT Group 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 <plat/regs-irqtype.h> + +#include <mach/map.h> +#include <plat/cpu.h> + +#include <mach/gpio.h> +#include <plat/gpio-cfg.h> +#include <mach/regs-gpio.h> + +#define S5PV210_EINT_MAX_SOURCES 8 + +struct s5pv210_eint_group_t { + int sources; + int base; + void __iomem *cont_reg; + void __iomem *mask_reg; + void __iomem *pend_reg; + int mask_ofs; + int pend_ofs; + + /* start offset in control register for each source */ + int cont_map[S5PV210_EINT_MAX_SOURCES]; +}; + +static struct s5pv210_eint_group_t eint_groups[] = { + [0] = { + .sources = 0, + .base = 0, + .cont_reg = 0x0, + .mask_reg = 0x0, + .pend_reg = 0x0, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + -1, -1, -1, -1, -1, -1, -1, -1, + }, + }, + [1] = { + .sources = IRQ_EINT_GROUP1_NR, + .base = IRQ_EINT_GROUP1_BASE, + .cont_reg = S5PV210_GPA0_INT_CON, + .mask_reg = S5PV210_GPA0_INT_MASK, + .pend_reg = S5PV210_GPA0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [2] = { + .sources = IRQ_EINT_GROUP2_NR, + .base = IRQ_EINT_GROUP2_BASE, + .cont_reg = S5PV210_GPA1_INT_CON, + .mask_reg = S5PV210_GPA1_INT_MASK, + .pend_reg = S5PV210_GPA1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, -1, -1, -1, -1, + }, + }, + [3] = { + .sources = IRQ_EINT_GROUP3_NR, + .base = IRQ_EINT_GROUP3_BASE, + .cont_reg = S5PV210_GPB_INT_CON, + .mask_reg = S5PV210_GPB_INT_MASK, + .pend_reg = S5PV210_GPB_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [4] = { + .sources = IRQ_EINT_GROUP4_NR, + .base = IRQ_EINT_GROUP4_BASE, + .cont_reg = S5PV210_GPC0_INT_CON, + .mask_reg = S5PV210_GPC0_INT_MASK, + .pend_reg = S5PV210_GPC0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, -1, -1, -1, + }, + }, + [5] = { + .sources = IRQ_EINT_GROUP5_NR, + .base = IRQ_EINT_GROUP5_BASE, + .cont_reg = S5PV210_GPC1_INT_CON, + .mask_reg = S5PV210_GPC1_INT_MASK, + .pend_reg = S5PV210_GPC1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, -1, -1, -1, + }, + }, + [6] = { + .sources = IRQ_EINT_GROUP6_NR, + .base = IRQ_EINT_GROUP6_BASE, + .cont_reg = S5PV210_GPD0_INT_CON, + .mask_reg = S5PV210_GPD0_INT_MASK, + .pend_reg = S5PV210_GPD0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, -1, -1, -1, -1, + }, + }, + [7] = { + .sources = IRQ_EINT_GROUP7_NR, + .base = IRQ_EINT_GROUP7_BASE, + .cont_reg = S5PV210_GPD1_INT_CON, + .mask_reg = S5PV210_GPD1_INT_MASK, + .pend_reg = S5PV210_GPD1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, -1, -1, + }, + }, + [8] = { + .sources = IRQ_EINT_GROUP8_NR, + .base = IRQ_EINT_GROUP8_BASE, + .cont_reg = S5PV210_GPE0_INT_CON, + .mask_reg = S5PV210_GPE0_INT_MASK, + .pend_reg = S5PV210_GPE0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [9] = { + .sources = IRQ_EINT_GROUP9_NR, + .base = IRQ_EINT_GROUP9_BASE, + .cont_reg = S5PV210_GPE1_INT_CON, + .mask_reg = S5PV210_GPE1_INT_MASK, + .pend_reg = S5PV210_GPE1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, -1, -1, -1, + }, + }, + [10] = { + .sources = IRQ_EINT_GROUP10_NR, + .base = IRQ_EINT_GROUP10_BASE, + .cont_reg = S5PV210_GPF0_INT_CON, + .mask_reg = S5PV210_GPF0_INT_MASK, + .pend_reg = S5PV210_GPF0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [11] = { + .sources = IRQ_EINT_GROUP11_NR, + .base = IRQ_EINT_GROUP11_BASE, + .cont_reg = S5PV210_GPF1_INT_CON, + .mask_reg = S5PV210_GPF1_INT_MASK, + .pend_reg = S5PV210_GPF1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [12] = { + .sources = IRQ_EINT_GROUP12_NR, + .base = IRQ_EINT_GROUP12_BASE, + .cont_reg = S5PV210_GPF2_INT_CON, + .mask_reg = S5PV210_GPF2_INT_MASK, + .pend_reg = S5PV210_GPF2_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [13] = { + .sources = IRQ_EINT_GROUP13_NR, + .base = IRQ_EINT_GROUP13_BASE, + .cont_reg = S5PV210_GPF3_INT_CON, + .mask_reg = S5PV210_GPF3_INT_MASK, + .pend_reg = S5PV210_GPF3_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, -1, -1, + }, + }, + [14] = { + .sources = IRQ_EINT_GROUP14_NR, + .base = IRQ_EINT_GROUP14_BASE, + .cont_reg = S5PV210_GPG0_INT_CON, + .mask_reg = S5PV210_GPG0_INT_MASK, + .pend_reg = S5PV210_GPG0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, -1, + }, + }, + [15] = { + .sources = IRQ_EINT_GROUP15_NR, + .base = IRQ_EINT_GROUP15_BASE, + .cont_reg = S5PV210_GPG1_INT_CON, + .mask_reg = S5PV210_GPG1_INT_MASK, + .pend_reg = S5PV210_GPG1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, -1, + }, + }, + [16] = { + .sources = IRQ_EINT_GROUP16_NR, + .base = IRQ_EINT_GROUP16_BASE, + .cont_reg = S5PV210_GPG2_INT_CON, + .mask_reg = S5PV210_GPG2_INT_MASK, + .pend_reg = S5PV210_GPG2_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, -1, + }, + }, + [17] = { + .sources = IRQ_EINT_GROUP17_NR, + .base = IRQ_EINT_GROUP17_BASE, + .cont_reg = S5PV210_GPG3_INT_CON, + .mask_reg = S5PV210_GPG3_INT_MASK, + .pend_reg = S5PV210_GPG3_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, -1, + }, + }, + [18] = { + .sources = IRQ_EINT_GROUP18_NR, + .base = IRQ_EINT_GROUP18_BASE, + .cont_reg = S5PV210_GPJ0_INT_CON, + .mask_reg = S5PV210_GPJ0_INT_MASK, + .pend_reg = S5PV210_GPJ0_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [19] = { + .sources = IRQ_EINT_GROUP19_NR, + .base = IRQ_EINT_GROUP19_BASE, + .cont_reg = S5PV210_GPJ1_INT_CON, + .mask_reg = S5PV210_GPJ1_INT_MASK, + .pend_reg = S5PV210_GPJ1_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, -1, -1, + }, + }, + [20] = { + .sources = IRQ_EINT_GROUP20_NR, + .base = IRQ_EINT_GROUP20_BASE, + .cont_reg = S5PV210_GPJ2_INT_CON, + .mask_reg = S5PV210_GPJ2_INT_MASK, + .pend_reg = S5PV210_GPJ2_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [21] = { + .sources = IRQ_EINT_GROUP21_NR, + .base = IRQ_EINT_GROUP21_BASE, + .cont_reg = S5PV210_GPJ3_INT_CON, + .mask_reg = S5PV210_GPJ3_INT_MASK, + .pend_reg = S5PV210_GPJ3_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, 20, 24, 28, + }, + }, + [22] = { + .sources = IRQ_EINT_GROUP22_NR, + .base = IRQ_EINT_GROUP22_BASE, + .cont_reg = S5PV210_GPJ4_INT_CON, + .mask_reg = S5PV210_GPJ4_INT_MASK, + .pend_reg = S5PV210_GPJ4_INT_PEND, + .mask_ofs = 0, + .pend_ofs = 0, + .cont_map = { + 0, 4, 8, 12, 16, -1, -1, -1, + }, + }, +}; + +#define S5PV210_EINT_GROUPS (sizeof(eint_groups) / sizeof(eint_groups[0])) + +static int to_group_number(unsigned int irq) +{ + int grp, found; + + for (grp = 1; grp < S5PV210_EINT_GROUPS; grp++) { + if (irq >= eint_groups[grp].base + eint_groups[grp].sources) + continue; + else { + found = 1; + break; + } + } + + if (!found) { + printk(KERN_ERR "failed to find out the eint group number\n"); + grp = 0; + } + + return grp; +} + +static inline int to_irq_number(int grp, unsigned int irq) +{ + return irq - eint_groups[grp].base; +} + +static inline int to_bit_offset(int grp, unsigned int irq) +{ + int offset; + + offset = eint_groups[grp].cont_map[to_irq_number(grp, irq)]; + + if (offset == -1) { + printk(KERN_ERR "invalid bit offset\n"); + offset = 0; + } + + return offset; +} + +static inline void s5pv210_irq_eint_group_mask(unsigned int irq) +{ + struct s5pv210_eint_group_t *group; + int grp; + u32 mask; + + grp = to_group_number(irq); + group = &eint_groups[grp]; + + mask = __raw_readl(group->mask_reg); + mask |= (1 << (group->mask_ofs + to_irq_number(grp, irq))); + + __raw_writel(mask, group->mask_reg); +} + +static void s5pv210_irq_eint_group_unmask(unsigned int irq) +{ + struct s5pv210_eint_group_t *group; + int grp; + u32 mask; + + grp = to_group_number(irq); + group = &eint_groups[grp]; + + mask = __raw_readl(group->mask_reg); + mask &= ~(1 << (group->mask_ofs + to_irq_number(grp, irq))); + + __raw_writel(mask, group->mask_reg); +} + +static inline void s5pv210_irq_eint_group_ack(unsigned int irq) +{ + struct s5pv210_eint_group_t *group; + int grp; + u32 pend; + + grp = to_group_number(irq); + group = &eint_groups[grp]; + + pend = (1 << (group->pend_ofs + to_irq_number(grp, irq))); + + __raw_writel(pend, group->pend_reg); +} + +static void s5pv210_irq_eint_group_maskack(unsigned int irq) +{ + /* compiler should in-line these */ + s5pv210_irq_eint_group_mask(irq); + s5pv210_irq_eint_group_ack(irq); +} + +static int s5pv210_irq_eint_group_set_type(unsigned int irq, unsigned int type) +{ + struct s5pv210_eint_group_t *group; + int grp, shift; + u32 ctrl, mask, newvalue = 0; + + grp = to_group_number(irq); + group = &eint_groups[grp]; + + switch (type) { + case IRQ_TYPE_NONE: + printk(KERN_WARNING "No edge setting!\n"); + break; + + case IRQ_TYPE_EDGE_RISING: + newvalue = S5P_EXTINT_RISEEDGE; + break; + + case IRQ_TYPE_EDGE_FALLING: + newvalue = S5P_EXTINT_FALLEDGE; + break; + + case IRQ_TYPE_EDGE_BOTH: + newvalue = S5P_EXTINT_BOTHEDGE; + break; + + case IRQ_TYPE_LEVEL_LOW: + newvalue = S5P_EXTINT_LOWLEV; + break; + + case IRQ_TYPE_LEVEL_HIGH: + newvalue = S5P_EXTINT_HILEV; + break; + + default: + printk(KERN_ERR "No such irq type %d", type); + return -1; + } + + shift = to_bit_offset(grp, irq); + mask = 0x7 << shift; + + ctrl = __raw_readl(group->cont_reg); + ctrl &= ~mask; + ctrl |= newvalue << shift; + __raw_writel(ctrl, group->cont_reg); + + return 0; +} + +static struct irq_chip s5pv210_irq_eint_group = { + .name = "s5pv210-eint-group", + .mask = s5pv210_irq_eint_group_mask, + .unmask = s5pv210_irq_eint_group_unmask, + .mask_ack = s5pv210_irq_eint_group_maskack, + .ack = s5pv210_irq_eint_group_ack, + .set_type = s5pv210_irq_eint_group_set_type, +}; + +/* + * s5p_irq_demux_eint_group +*/ +static inline void s5pv210_irq_demux_eint_group(unsigned int irq, + struct irq_desc *desc) +{ + struct s5pv210_eint_group_t *group; + u32 status, mask, newirq; + int grp, src; + + for (grp = 1; grp < S5PV210_EINT_GROUPS; grp++) { + group = &eint_groups[grp]; + status = __raw_readl(group->pend_reg); + mask = __raw_readl(group->mask_reg); + + status &= ~mask; + status >>= group->pend_ofs; + status &= 0xff; /* MAX IRQ in a group is 8 */ + + if (!status) + continue; + + for (src = 0; src < S5PV210_EINT_MAX_SOURCES; src++) { + if (status & 1) { + newirq = group->base + src; + generic_handle_irq(newirq); + } + + status >>= 1; + } + } +} + +int __init s5pv210_init_irq_eint_group(void) +{ + int irq; + + for (irq = IRQ_EINT_GROUP_BASE; irq < NR_IRQS; irq++) { + set_irq_chip(irq, &s5pv210_irq_eint_group); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } + + set_irq_chained_handler(IRQ_GPIOINT, s5pv210_irq_demux_eint_group); + + return 0; +} + +arch_initcall(s5pv210_init_irq_eint_group); diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile index 2046cfc..00a7966 100644 --- a/arch/arm/plat-s5p/Makefile +++ b/arch/arm/plat-s5p/Makefile @@ -15,5 +15,5 @@ obj- := obj-y += dev-uart.o obj-y += cpu.o obj-y += clock.o -obj-y += irq.o +obj-y += irq.o irq-eint.o obj-y += setup-i2c0.o diff --git a/arch/arm/plat-s5p/irq-eint.c b/arch/arm/plat-s5p/irq-eint.c new file mode 100644 index 0000000..a49ea29 --- /dev/null +++ b/arch/arm/plat-s5p/irq-eint.c @@ -0,0 +1,229 @@ +/* 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/sysdev.h> + +#include <asm/hardware/vic.h> + +#include <plat/regs-irqtype.h> + +#include <mach/map.h> +#include <plat/cpu.h> +#include <plat/pm.h> + +#include <mach/gpio.h> +#include <plat/gpio-cfg.h> +#include <mach/regs-gpio.h> + +static inline void s5p_irq_eint_mask(unsigned int irq) +{ + u32 mask; + + mask = __raw_readl(S5P_EINT_MASK(eint_mask_reg(irq))); + mask |= eint_irq_to_bit(irq); + __raw_writel(mask, S5P_EINT_MASK(eint_mask_reg(irq))); +} + +static void s5p_irq_eint_unmask(unsigned int irq) +{ + u32 mask; + + mask = __raw_readl(S5P_EINT_MASK(eint_mask_reg(irq))); + mask &= ~(eint_irq_to_bit(irq)); + __raw_writel(mask, S5P_EINT_MASK(eint_mask_reg(irq))); +} + +static inline void s5p_irq_eint_ack(unsigned int irq) +{ + __raw_writel(eint_irq_to_bit(irq), S5P_EINT_PEND(eint_pend_reg(irq))); +} + +static void s5p_irq_eint_maskack(unsigned int irq) +{ + /* compiler should in-line these */ + s5p_irq_eint_mask(irq); + s5p_irq_eint_ack(irq); +} + +static int s5p_irq_eint_set_type(unsigned int irq, unsigned int type) +{ + int offs = eint_offset(irq); + int shift; + u32 ctrl, mask; + u32 newvalue = 0; + + switch (type) { + case IRQ_TYPE_NONE: + printk(KERN_WARNING "No edge setting!\n"); + break; + + case IRQ_TYPE_EDGE_RISING: + newvalue = S5P_EXTINT_RISEEDGE; + break; + + case IRQ_TYPE_EDGE_FALLING: + newvalue = S5P_EXTINT_RISEEDGE; + break; + + case IRQ_TYPE_EDGE_BOTH: + newvalue = S5P_EXTINT_BOTHEDGE; + break; + + case IRQ_TYPE_LEVEL_LOW: + newvalue = S5P_EXTINT_LOWLEV; + break; + + case IRQ_TYPE_LEVEL_HIGH: + newvalue = S5P_EXTINT_HILEV; + break; + + default: + printk(KERN_ERR "No such irq type %d", type); + return -1; + } + + shift = (offs & 0x7) * 4; + mask = 0x7 << shift; + + ctrl = __raw_readl(S5P_EINT_CON(eint_conf_reg(irq))); + ctrl &= ~mask; + ctrl |= newvalue << shift; + __raw_writel(ctrl, S5P_EINT_CON(eint_conf_reg(irq))); + + if ((0 <= offs) && (offs < 8)) + s3c_gpio_cfgpin(S5P_EINT_SET0(offs&0x7), 0xf<<((offs&0x7)*4)); + + else if ((8 <= offs) && (offs < 16)) + s3c_gpio_cfgpin(S5P_EINT_SET1(offs&0x7), 0xf<<((offs&0x7)*4)); + + else if ((16 <= offs) && (offs < 24)) + s3c_gpio_cfgpin(S5P_EINT_SET2(offs&0x7), 0xf<<((offs&0x7)*4)); + + else if ((24 <= offs) && (offs < 32)) + s3c_gpio_cfgpin(S5P_EINT_SET3(offs&0x7), 0xf<<((offs&0x7)*4)); + + else + printk(KERN_ERR "No such irq number %d", offs); + + return 0; +} + +static struct irq_chip s5p_irq_eint = { + .name = "s5p-eint", + .mask = s5p_irq_eint_mask, + .unmask = s5p_irq_eint_unmask, + .mask_ack = s5p_irq_eint_maskack, + .ack = s5p_irq_eint_ack, + .set_type = s5p_irq_eint_set_type, +#ifdef CONFIG_PM + .set_wake = s3c_irqext_wake, +#endif +}; + +/* s5p_irq_demux_eint + * + * This function demuxes the IRQ from the group0 external interrupts, + * from IRQ_EINT(16) to IRQ_EINT(31). It is designed to be inlined into + * the specific handlers s5p_irq_demux_eintX_Y. + */ +static inline void s5p_irq_demux_eint(unsigned int start, unsigned int end) +{ + u32 status = __raw_readl(S5P_EINT_PEND((start >> 3))); + u32 mask = __raw_readl(S5P_EINT_MASK((start >> 3))); + unsigned int irq; + + status &= ~mask; + status &= (1 << (end - start + 1)) - 1; + + for (irq = IRQ_EINT(start); irq <= IRQ_EINT(end); irq++) { + if (status & 1) + generic_handle_irq(irq); + + status >>= 1; + } +} + +static void s5p_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc) +{ + s5p_irq_demux_eint(16, 23); + s5p_irq_demux_eint(24, 31); +} + +/* EINT0 ~ EINT15 */ + +static void s5p_irq_vic_eint_mask(unsigned int irq) +{ + void __iomem *base = get_irq_chip_data(irq); + + s5p_irq_eint_mask(irq); + + irq &= 31; + writel(1 << irq, base + VIC_INT_ENABLE_CLEAR); +} + +static void s5p_irq_vic_eint_unmask(unsigned int irq) +{ + void __iomem *base = get_irq_chip_data(irq); + + s5p_irq_eint_unmask(irq); + + irq &= 31; + writel(1 << irq, base + VIC_INT_ENABLE); +} + +static inline void s5p_irq_vic_eint_ack(unsigned int irq) +{ + __raw_writel(eint_irq_to_bit(irq), S5P_EINT_PEND(eint_pend_reg(irq))); +} + +static void s5p_irq_vic_eint_maskack(unsigned int irq) +{ + /* compiler should in-line these */ + s5p_irq_vic_eint_mask(irq); + s5p_irq_vic_eint_ack(irq); +} + +static struct irq_chip s5p_irq_vic_eint = { + .name = "s5p_vic_eint", + .mask = s5p_irq_vic_eint_mask, + .unmask = s5p_irq_vic_eint_unmask, + .mask_ack = s5p_irq_vic_eint_maskack, + .ack = s5p_irq_vic_eint_ack, + .set_type = s5p_irq_eint_set_type, +#ifdef CONFIG_PM + .set_wake = s3c_irqext_wake, +#endif + +}; + +int __init s5p_init_irq_eint(void) +{ + int irq; + + for (irq = IRQ_EINT0; irq <= IRQ_EINT15; irq++) + set_irq_chip(irq, &s5p_irq_vic_eint); + + for (irq = IRQ_EINT(16); irq <= IRQ_EINT(31); irq++) { + set_irq_chip(irq, &s5p_irq_eint); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } + + set_irq_chained_handler(IRQ_EINT16_31, s5p_irq_demux_eint16_31); + return 0; +} + +arch_initcall(s5p_init_irq_eint); -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
