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ARM: 7257/1: EXYNOS: introduce arch/arm/mach-exynos/common.[ch]

Browse source 
This patch introduces common.[ch] which are used only in the
arch/arm/mach-exynos/ directory. The common.c file merges
the cpu.c, init.c, irq-combiner.c and irq-eint.c files which
are used commonly on EXYNOS SoCs and the common.h file replaces
with plat/exynos4.h file.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Kukjin Kim 2011-12-27 08:18:36 +01:00 committed by Russell King
parent 3fa754c298
commit cc511b8d84
21 changed files with 793 additions and 872 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
arch/arm/mach-exynos/Makefile
View file

@ -10,15 +10,17 @@ obj-m :=
obj-n :=
obj- :=
# Core support for EXYNOS4 system
# Core
obj-$(CONFIG_ARCH_EXYNOS4) += cpu.o init.o clock.o irq-combiner.o setup-i2c0.o
obj-$(CONFIG_ARCH_EXYNOS4) += irq-eint.o dma.o pmu.o
obj-$(CONFIG_ARCH_EXYNOS4) += common.o clock.o
obj-$(CONFIG_CPU_EXYNOS4210) += clock-exynos4210.o
obj-$(CONFIG_SOC_EXYNOS4212) += clock-exynos4212.o
obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ARCH_EXYNOS4) += dma.o pmu.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
obj-$(CONFIG_EXYNOS4_MCT) += mct.o
@ -45,6 +47,7 @@ obj-$(CONFIG_EXYNOS4_DEV_PD) += dev-pd.o
obj-$(CONFIG_EXYNOS4_DEV_SYSMMU) += dev-sysmmu.o
obj-$(CONFIG_EXYNOS4_DEV_DWMCI) += dev-dwmci.o
obj-$(CONFIG_ARCH_EXYNOS4) += setup-i2c0.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMC) += setup-fimc.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMD0) += setup-fimd0.o
obj-$(CONFIG_EXYNOS4_SETUP_I2C1) += setup-i2c1.o

3
arch/arm/mach-exynos/clock-exynos4210.c
View file

@ -23,7 +23,6 @@
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/exynos4.h>
#include <plat/pm.h>
#include <mach/hardware.h>
@ -31,6 +30,8 @@
#include <mach/regs-clock.h>
#include <mach/exynos4-clock.h>
#include "common.h"
static struct sleep_save exynos4210_clock_save[] = {
SAVE_ITEM(S5P_CLKSRC_IMAGE),
SAVE_ITEM(S5P_CLKSRC_LCD1),

3
arch/arm/mach-exynos/clock-exynos4212.c
View file

@ -23,7 +23,6 @@
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/exynos4.h>
#include <plat/pm.h>
#include <mach/hardware.h>
@ -31,6 +30,8 @@
#include <mach/regs-clock.h>
#include <mach/exynos4-clock.h>
#include "common.h"
static struct sleep_save exynos4212_clock_save[] = {
SAVE_ITEM(S5P_CLKSRC_IMAGE),
SAVE_ITEM(S5P_CLKDIV_IMAGE),

3
arch/arm/mach-exynos/clock.c
View file

@ -21,7 +21,6 @@
#include <plat/pll.h>
#include <plat/s5p-clock.h>
#include <plat/clock-clksrc.h>
#include <plat/exynos4.h>
#include <plat/pm.h>
#include <mach/map.h>
@ -29,6 +28,8 @@
#include <mach/sysmmu.h>
#include <mach/exynos4-clock.h>
#include "common.h"
static struct sleep_save exynos4_clock_save[] = {
SAVE_ITEM(S5P_CLKDIV_LEFTBUS),
SAVE_ITEM(S5P_CLKGATE_IP_LEFTBUS),

723
arch/arm/mach-exynos/common.c Normal file
View file

@ -0,0 +1,723 @@
/*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Common Codes for EXYNOS
*
* 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 <linux/gpio.h>
#include <linux/sched.h>
#include <linux/serial_core.h>
#include <asm/proc-fns.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/gic.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <mach/regs-irq.h>
#include <mach/regs-pmu.h>
#include <mach/regs-gpio.h>
#include <plat/cpu.h>
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/pm.h>
#include <plat/reset.h>
#include <plat/sdhci.h>
#include <plat/gpio-cfg.h>
#include <plat/adc-core.h>
#include <plat/fb-core.h>
#include <plat/fimc-core.h>
#include <plat/iic-core.h>
#include <plat/tv-core.h>
#include <plat/regs-serial.h>
#include "common.h"
unsigned int gic_bank_offset __read_mostly;
static const char name_exynos4210[] = "EXYNOS4210";
static const char name_exynos4212[] = "EXYNOS4212";
static const char name_exynos4412[] = "EXYNOS4412";
static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = EXYNOS4210_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_clocks = exynos4_init_clocks,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4210,
}, {
.idcode = EXYNOS4212_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_clocks = exynos4_init_clocks,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4212,
}, {
.idcode = EXYNOS4412_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_clocks = exynos4_init_clocks,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4412,
},
};
/* Initial IO mappings */
static struct map_desc exynos_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_CHIPID,
.pfn = __phys_to_pfn(EXYNOS4_PA_CHIPID),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_SYS,
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSCON),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_TIMER,
.pfn = __phys_to_pfn(EXYNOS4_PA_TIMER),
.length = SZ_16K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_WATCHDOG,
.pfn = __phys_to_pfn(EXYNOS4_PA_WATCHDOG),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SROMC,
.pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SYSTIMER,
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_PMU,
.pfn = __phys_to_pfn(EXYNOS4_PA_PMU),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_COMBINER_BASE,
.pfn = __phys_to_pfn(EXYNOS4_PA_COMBINER),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GIC_CPU,
.pfn = __phys_to_pfn(EXYNOS4_PA_GIC_CPU),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GIC_DIST,
.pfn = __phys_to_pfn(EXYNOS4_PA_GIC_DIST),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_UART,
.pfn = __phys_to_pfn(EXYNOS4_PA_UART),
.length = SZ_512K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_CMU,
.pfn = __phys_to_pfn(EXYNOS4_PA_CMU),
.length = SZ_128K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_COREPERI_BASE,
.pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI),
.length = SZ_8K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_L2CC,
.pfn = __phys_to_pfn(EXYNOS4_PA_L2CC),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GPIO1,
.pfn = __phys_to_pfn(EXYNOS4_PA_GPIO1),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GPIO2,
.pfn = __phys_to_pfn(EXYNOS4_PA_GPIO2),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GPIO3,
.pfn = __phys_to_pfn(EXYNOS4_PA_GPIO3),
.length = SZ_256,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_DMC0,
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SROMC,
.pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_USB_HSPHY,
.pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc0[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM,
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc1[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM,
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static void exynos_idle(void)
{
if (!need_resched())
cpu_do_idle();
local_irq_enable();
}
static void exynos4_sw_reset(void)
{
__raw_writel(0x1, S5P_SWRESET);
}
/*
* exynos_map_io
*
* register the standard cpu IO areas
*/
void __init exynos_init_io(struct map_desc *mach_desc, int size)
{
/* initialize the io descriptors we need for initialization */
iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
if (mach_desc)
iotable_init(mach_desc, size);
/* detect cpu id and rev. */
s5p_init_cpu(S5P_VA_CHIPID);
s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
}
void __init exynos4_map_io(void)
{
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0));
else
iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
/* initialize device information early */
exynos4_default_sdhci0();
exynos4_default_sdhci1();
exynos4_default_sdhci2();
exynos4_default_sdhci3();
s3c_adc_setname("samsung-adc-v3");
s3c_fimc_setname(0, "exynos4-fimc");
s3c_fimc_setname(1, "exynos4-fimc");
s3c_fimc_setname(2, "exynos4-fimc");
s3c_fimc_setname(3, "exynos4-fimc");
/* The I2C bus controllers are directly compatible with s3c2440 */
s3c_i2c0_setname("s3c2440-i2c");
s3c_i2c1_setname("s3c2440-i2c");
s3c_i2c2_setname("s3c2440-i2c");
s5p_fb_setname(0, "exynos4-fb");
s5p_hdmi_setname("exynos4-hdmi");
}
void __init exynos4_init_clocks(int xtal)
{
printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
s3c24xx_register_baseclocks(xtal);
s5p_register_clocks(xtal);
if (soc_is_exynos4210())
exynos4210_register_clocks();
else if (soc_is_exynos4212() || soc_is_exynos4412())
exynos4212_register_clocks();
exynos4_register_clocks();
exynos4_setup_clocks();
}
#define COMBINER_ENABLE_SET 0x0
#define COMBINER_ENABLE_CLEAR 0x4
#define COMBINER_INT_STATUS 0xC
static DEFINE_SPINLOCK(irq_controller_lock);
struct combiner_chip_data {
unsigned int irq_offset;
unsigned int irq_mask;
void __iomem *base;
};
static struct combiner_chip_data combiner_data[MAX_COMBINER_NR];
static inline void __iomem *combiner_base(struct irq_data *data)
{
struct combiner_chip_data *combiner_data =
irq_data_get_irq_chip_data(data);
return combiner_data->base;
}
static void combiner_mask_irq(struct irq_data *data)
{
u32 mask = 1 << (data->irq % 32);
__raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_CLEAR);
}
static void combiner_unmask_irq(struct irq_data *data)
{
u32 mask = 1 << (data->irq % 32);
__raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_SET);
}
static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
{
struct combiner_chip_data *chip_data = irq_get_handler_data(irq);
struct irq_chip *chip = irq_get_chip(irq);
unsigned int cascade_irq, combiner_irq;
unsigned long status;
chained_irq_enter(chip, desc);
spin_lock(&irq_controller_lock);
status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
spin_unlock(&irq_controller_lock);
status &= chip_data->irq_mask;
if (status == 0)
goto out;
combiner_irq = __ffs(status);
cascade_irq = combiner_irq + (chip_data->irq_offset & ~31);
if (unlikely(cascade_irq >= NR_IRQS))
do_bad_IRQ(cascade_irq, desc);
else
generic_handle_irq(cascade_irq);
out:
chained_irq_exit(chip, desc);
}
static struct irq_chip combiner_chip = {
.name = "COMBINER",
.irq_mask = combiner_mask_irq,
.irq_unmask = combiner_unmask_irq,
};
static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq)
{
if (combiner_nr >= MAX_COMBINER_NR)
BUG();
if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0)
BUG();
irq_set_chained_handler(irq, combiner_handle_cascade_irq);
}
static void __init combiner_init(unsigned int combiner_nr, void __iomem *base,
unsigned int irq_start)
{
unsigned int i;
if (combiner_nr >= MAX_COMBINER_NR)
BUG();
combiner_data[combiner_nr].base = base;
combiner_data[combiner_nr].irq_offset = irq_start;
combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
/* Disable all interrupts */
__raw_writel(combiner_data[combiner_nr].irq_mask,
base + COMBINER_ENABLE_CLEAR);
/* Setup the Linux IRQ subsystem */
for (i = irq_start; i < combiner_data[combiner_nr].irq_offset
+ MAX_IRQ_IN_COMBINER; i++) {
irq_set_chip_and_handler(i, &combiner_chip, handle_level_irq);
irq_set_chip_data(i, &combiner_data[combiner_nr]);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
}
}
static void exynos4_gic_irq_fix_base(struct irq_data *d)
{
struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d);
gic_data->cpu_base = S5P_VA_GIC_CPU +
(gic_bank_offset * smp_processor_id());
gic_data->dist_base = S5P_VA_GIC_DIST +
(gic_bank_offset * smp_processor_id());
}
void __init exynos4_init_irq(void)
{
int irq;
gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
gic_init(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU);
gic_arch_extn.irq_eoi = exynos4_gic_irq_fix_base;
gic_arch_extn.irq_unmask = exynos4_gic_irq_fix_base;
gic_arch_extn.irq_mask = exynos4_gic_irq_fix_base;
for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq),
COMBINER_IRQ(irq, 0));
combiner_cascade_irq(irq, IRQ_SPI(irq));
}
/*
* The parameters of s5p_init_irq() are for VIC init.
* Theses parameters should be NULL and 0 because EXYNOS4
* uses GIC instead of VIC.
*/
s5p_init_irq(NULL, 0);
}
struct sysdev_class exynos4_sysclass = {
.name = "exynos4-core",
};
static struct sys_device exynos4_sysdev = {
.cls = &exynos4_sysclass,
};
static int __init exynos4_core_init(void)
{
return sysdev_class_register(&exynos4_sysclass);
}
core_initcall(exynos4_core_init);
#ifdef CONFIG_CACHE_L2X0
static int __init exynos4_l2x0_cache_init(void)
{
/* TAG, Data Latency Control: 2cycle */
__raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
if (soc_is_exynos4210())
__raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
else if (soc_is_exynos4212() || soc_is_exynos4412())
__raw_writel(0x120, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
/* L2X0 Prefetch Control */
__raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
/* L2X0 Power Control */
__raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN,
S5P_VA_L2CC + L2X0_POWER_CTRL);
l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);
return 0;
}
early_initcall(exynos4_l2x0_cache_init);
#endif
int __init exynos_init(void)
{
printk(KERN_INFO "EXYNOS: Initializing architecture\n");
/* set idle function */
pm_idle = exynos_idle;
/* set sw_reset function */
if (soc_is_exynos4210() || soc_is_exynos4212() || soc_is_exynos4412())
s5p_reset_hook = exynos4_sw_reset;
return sysdev_register(&exynos4_sysdev);
}
static struct s3c24xx_uart_clksrc exynos4_serial_clocks[] = {
[0] = {
.name = "uclk1",
.divisor = 1,
.min_baud = 0,
.max_baud = 0,
},
};
/* uart registration process */
void __init exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
struct s3c2410_uartcfg *tcfg = cfg;
u32 ucnt;
for (ucnt = 0; ucnt < no; ucnt++, tcfg++) {
if (!tcfg->clocks) {
tcfg->has_fracval = 1;
tcfg->clocks = exynos4_serial_clocks;
tcfg->clocks_size = ARRAY_SIZE(exynos4_serial_clocks);
}
tcfg->flags |= NO_NEED_CHECK_CLKSRC;
}
s3c24xx_init_uartdevs("s5pv210-uart", s5p_uart_resources, cfg, no);
}
static DEFINE_SPINLOCK(eint_lock);
static unsigned int eint0_15_data[16];
static unsigned int exynos4_get_irq_nr(unsigned int number)
{
u32 ret = 0;
switch (number) {
case 0 ... 3:
ret = (number + IRQ_EINT0);
break;
case 4 ... 7:
ret = (number + (IRQ_EINT4 - 4));
break;
case 8 ... 15:
ret = (number + (IRQ_EINT8 - 8));
break;
default:
printk(KERN_ERR "number available : %d\n", number);
}
return ret;
}
static inline void exynos4_irq_eint_mask(struct irq_data *data)
{
u32 mask;
spin_lock(&eint_lock);
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)));
spin_unlock(&eint_lock);
}
static void exynos4_irq_eint_unmask(struct irq_data *data)
{
u32 mask;
spin_lock(&eint_lock);
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)));
spin_unlock(&eint_lock);
}
static inline void exynos4_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 exynos4_irq_eint_maskack(struct irq_data *data)
{
exynos4_irq_eint_mask(data);
exynos4_irq_eint_ack(data);
}
static int exynos4_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;
spin_lock(&eint_lock);
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)));
spin_unlock(&eint_lock);
switch (offs) {
case 0 ... 7:
s3c_gpio_cfgpin(EINT_GPIO_0(offs & 0x7), EINT_MODE);
break;
case 8 ... 15:
s3c_gpio_cfgpin(EINT_GPIO_1(offs & 0x7), EINT_MODE);
break;
case 16 ... 23:
s3c_gpio_cfgpin(EINT_GPIO_2(offs & 0x7), EINT_MODE);
break;
case 24 ... 31:
s3c_gpio_cfgpin(EINT_GPIO_3(offs & 0x7), EINT_MODE);
break;
default:
printk(KERN_ERR "No such irq number %d", offs);
}
return 0;
}
static struct irq_chip exynos4_irq_eint = {
.name = "exynos4-eint",
.irq_mask = exynos4_irq_eint_mask,
.irq_unmask = exynos4_irq_eint_unmask,
.irq_mask_ack = exynos4_irq_eint_maskack,
.irq_ack = exynos4_irq_eint_ack,
.irq_set_type = exynos4_irq_eint_set_type,
#ifdef CONFIG_PM
.irq_set_wake = s3c_irqext_wake,
#endif
};
/*
* exynos4_irq_demux_eint
*
* This function demuxes the IRQ from 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 exynos4_irq_demux_eint(unsigned int start)
{
unsigned int irq;
u32 status = __raw_readl(S5P_EINT_PEND(EINT_REG_NR(start)));
u32 mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(start)));
status &= ~mask;
status &= 0xff;
while (status) {
irq = fls(status) - 1;
generic_handle_irq(irq + start);
status &= ~(1 << irq);
}
}
static void exynos4_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
{
struct irq_chip *chip = irq_get_chip(irq);
chained_irq_enter(chip, desc);
exynos4_irq_demux_eint(IRQ_EINT(16));
exynos4_irq_demux_eint(IRQ_EINT(24));
chained_irq_exit(chip, desc);
}
static void exynos4_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
{
u32 *irq_data = irq_get_handler_data(irq);
struct irq_chip *chip = irq_get_chip(irq);
chained_irq_enter(chip, desc);
chip->irq_mask(&desc->irq_data);
if (chip->irq_ack)
chip->irq_ack(&desc->irq_data);
generic_handle_irq(*irq_data);
chip->irq_unmask(&desc->irq_data);
chained_irq_exit(chip, desc);
}
int __init exynos4_init_irq_eint(void)
{
int irq;
for (irq = 0 ; irq <= 31 ; irq++) {
irq_set_chip_and_handler(IRQ_EINT(irq), &exynos4_irq_eint,
handle_level_irq);
set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
}
irq_set_chained_handler(IRQ_EINT16_31, exynos4_irq_demux_eint16_31);
for (irq = 0 ; irq <= 15 ; irq++) {
eint0_15_data[irq] = IRQ_EINT(irq);
irq_set_handler_data(exynos4_get_irq_nr(irq),
&eint0_15_data[irq]);
irq_set_chained_handler(exynos4_get_irq_nr(irq),
exynos4_irq_eint0_15);
}
return 0;
}
arch_initcall(exynos4_init_irq_eint);

39
arch/arm/mach-exynos/common.h Normal file
View file

@ -0,0 +1,39 @@
/*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Common Header for EXYNOS machines
*
* 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.
*/
#ifndef __ARCH_ARM_MACH_EXYNOS_COMMON_H
#define __ARCH_ARM_MACH_EXYNOS_COMMON_H
void exynos_init_io(struct map_desc *mach_desc, int size);
void exynos4_init_irq(void);
void exynos4_register_clocks(void);
void exynos4_setup_clocks(void);
void exynos4210_register_clocks(void);
void exynos4212_register_clocks(void);
extern struct sys_timer exynos4_timer;
#ifdef CONFIG_ARCH_EXYNOS
extern int exynos_init(void);
extern void exynos4_map_io(void);
extern void exynos4_init_clocks(int xtal);
extern void exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no);
#else
#define exynos4_init_clocks NULL
#define exynos4_init_uarts NULL
#define exynos4_map_io NULL
#define exynos_init NULL
#endif
#endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */

298
arch/arm/mach-exynos/cpu.c
View file

@ -1,298 +0,0 @@
/* linux/arch/arm/mach-exynos/cpu.c
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* 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/sched.h>
#include <linux/sysdev.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/proc-fns.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/gic.h>
#include <plat/cpu.h>
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/exynos4.h>
#include <plat/adc-core.h>
#include <plat/sdhci.h>
#include <plat/fb-core.h>
#include <plat/fimc-core.h>
#include <plat/iic-core.h>
#include <plat/reset.h>
#include <plat/tv-core.h>
#include <mach/regs-irq.h>
#include <mach/regs-pmu.h>
unsigned int gic_bank_offset __read_mostly;
extern int combiner_init(unsigned int combiner_nr, void __iomem *base,
unsigned int irq_start);
extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq);
/* Initial IO mappings */
static struct map_desc exynos_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSTIMER,
.pfn = __phys_to_pfn(EXYNOS_PA_SYSTIMER),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_PMU,
.pfn = __phys_to_pfn(EXYNOS_PA_PMU),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_COMBINER_BASE,
.pfn = __phys_to_pfn(EXYNOS_PA_COMBINER),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GIC_CPU,
.pfn = __phys_to_pfn(EXYNOS_PA_GIC_CPU),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GIC_DIST,
.pfn = __phys_to_pfn(EXYNOS_PA_GIC_DIST),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_UART,
.pfn = __phys_to_pfn(S3C_PA_UART),
.length = SZ_512K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_CMU,
.pfn = __phys_to_pfn(EXYNOS4_PA_CMU),
.length = SZ_128K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_COREPERI_BASE,
.pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI),
.length = SZ_8K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_L2CC,
.pfn = __phys_to_pfn(EXYNOS4_PA_L2CC),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GPIO1,
.pfn = __phys_to_pfn(EXYNOS4_PA_GPIO1),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GPIO2,
.pfn = __phys_to_pfn(EXYNOS4_PA_GPIO2),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_GPIO3,
.pfn = __phys_to_pfn(EXYNOS4_PA_GPIO3),
.length = SZ_256,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_DMC0,
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SROMC,
.pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_USB_HSPHY,
.pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc0[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM,
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc1[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM,
.pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static void exynos_idle(void)
{
if (!need_resched())
cpu_do_idle();
local_irq_enable();
}
static void exynos4_sw_reset(void)
{
__raw_writel(0x1, S5P_SWRESET);
}
/*
* exynos_map_io
*
* register the standard cpu IO areas
*/
void __init exynos4_map_io(void)
{
iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0));
else
iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
/* initialize device information early */
exynos4_default_sdhci0();
exynos4_default_sdhci1();
exynos4_default_sdhci2();
exynos4_default_sdhci3();
s3c_adc_setname("samsung-adc-v3");
s3c_fimc_setname(0, "exynos4-fimc");
s3c_fimc_setname(1, "exynos4-fimc");
s3c_fimc_setname(2, "exynos4-fimc");
s3c_fimc_setname(3, "exynos4-fimc");
/* The I2C bus controllers are directly compatible with s3c2440 */
s3c_i2c0_setname("s3c2440-i2c");
s3c_i2c1_setname("s3c2440-i2c");
s3c_i2c2_setname("s3c2440-i2c");
s5p_fb_setname(0, "exynos4-fb");
s5p_hdmi_setname("exynos4-hdmi");
}
void __init exynos4_init_clocks(int xtal)
{
printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
s3c24xx_register_baseclocks(xtal);
s5p_register_clocks(xtal);
if (soc_is_exynos4210())
exynos4210_register_clocks();
else if (soc_is_exynos4212() || soc_is_exynos4412())
exynos4212_register_clocks();
exynos4_register_clocks();
exynos4_setup_clocks();
}
static void exynos4_gic_irq_fix_base(struct irq_data *d)
{
struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d);
gic_data->cpu_base = S5P_VA_GIC_CPU +
(gic_bank_offset * smp_processor_id());
gic_data->dist_base = S5P_VA_GIC_DIST +
(gic_bank_offset * smp_processor_id());
}
void __init exynos4_init_irq(void)
{
int irq;
gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
gic_init(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU);
gic_arch_extn.irq_eoi = exynos4_gic_irq_fix_base;
gic_arch_extn.irq_unmask = exynos4_gic_irq_fix_base;
gic_arch_extn.irq_mask = exynos4_gic_irq_fix_base;
for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq),
COMBINER_IRQ(irq, 0));
combiner_cascade_irq(irq, IRQ_SPI(irq));
}
/* The parameters of s5p_init_irq() are for VIC init.
* Theses parameters should be NULL and 0 because EXYNOS4
* uses GIC instead of VIC.
*/
s5p_init_irq(NULL, 0);
}
struct sysdev_class exynos4_sysclass = {
.name = "exynos4-core",
};
static struct sys_device exynos4_sysdev = {
.cls = &exynos4_sysclass,
};
static int __init exynos4_core_init(void)
{
return sysdev_class_register(&exynos4_sysclass);
}
core_initcall(exynos4_core_init);
#ifdef CONFIG_CACHE_L2X0
static int __init exynos4_l2x0_cache_init(void)
{
/* TAG, Data Latency Control: 2cycle */
__raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
if (soc_is_exynos4210())
__raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
else if (soc_is_exynos4212() || soc_is_exynos4412())
__raw_writel(0x120, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
/* L2X0 Prefetch Control */
__raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
/* L2X0 Power Control */
__raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN,
S5P_VA_L2CC + L2X0_POWER_CTRL);
l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);
return 0;
}
early_initcall(exynos4_l2x0_cache_init);
#endif
int __init exynos_init(void)
{
printk(KERN_INFO "EXYNOS: Initializing architecture\n");
/* set idle function */
pm_idle = exynos_idle;
/* set sw_reset function */
if (soc_is_exynos4210() || soc_is_exynos4212() || soc_is_exynos4412())
s5p_reset_hook = exynos4_sw_reset;
return sysdev_register(&exynos4_sysdev);
}

12
arch/arm/mach-exynos/include/mach/map.h
View file

@ -149,7 +149,6 @@
#define S3C_PA_WDT EXYNOS4_PA_WATCHDOG
#define S3C_PA_UART EXYNOS4_PA_UART
#define S5P_PA_CHIPID EXYNOS4_PA_CHIPID
#define S5P_PA_EHCI EXYNOS4_PA_EHCI
#define S5P_PA_FIMC0 EXYNOS4_PA_FIMC0
#define S5P_PA_FIMC1 EXYNOS4_PA_FIMC1
@ -166,26 +165,17 @@
#define S5P_PA_ONENAND_DMA EXYNOS4_PA_ONENAND_DMA
#define S5P_PA_SDO EXYNOS4_PA_SDO
#define S5P_PA_SDRAM EXYNOS4_PA_SDRAM
#define S5P_PA_SROMC EXYNOS4_PA_SROMC
#define S5P_PA_SYSCON EXYNOS4_PA_SYSCON
#define S5P_PA_TIMER EXYNOS4_PA_TIMER
#define S5P_PA_VP EXYNOS4_PA_VP
#define SAMSUNG_PA_ADC EXYNOS4_PA_ADC
#define SAMSUNG_PA_ADC1 EXYNOS4_PA_ADC1
#define SAMSUNG_PA_KEYPAD EXYNOS4_PA_KEYPAD
#define EXYNOS_PA_COMBINER EXYNOS4_PA_COMBINER
#define EXYNOS_PA_GIC_CPU EXYNOS4_PA_GIC_CPU
#define EXYNOS_PA_GIC_DIST EXYNOS4_PA_GIC_DIST
#define EXYNOS_PA_PMU EXYNOS4_PA_PMU
#define EXYNOS_PA_SYSTIMER EXYNOS4_PA_SYSTIMER
/* Compatibility UART */
#define S3C_VA_UARTx(x) (S3C_VA_UART + ((x) * S3C_UART_OFFSET))
#define S5P_PA_UART(x) (S3C_PA_UART + ((x) * S3C_UART_OFFSET))
#define S5P_PA_UART(x) (EXYNOS4_PA_UART + ((x) * S3C_UART_OFFSET))
#define S5P_PA_UART0 S5P_PA_UART(0)
#define S5P_PA_UART1 S5P_PA_UART(1)
#define S5P_PA_UART2 S5P_PA_UART(2)

42
arch/arm/mach-exynos/init.c
View file

@ -1,42 +0,0 @@
/* linux/arch/arm/mach-exynos4/init.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* 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/serial_core.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/regs-serial.h>
static struct s3c24xx_uart_clksrc exynos4_serial_clocks[] = {
[0] = {
.name = "uclk1",
.divisor = 1,
.min_baud = 0,
.max_baud = 0,
},
};
/* uart registration process */
void __init exynos4_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
struct s3c2410_uartcfg *tcfg = cfg;
u32 ucnt;
for (ucnt = 0; ucnt < no; ucnt++, tcfg++) {
if (!tcfg->clocks) {
tcfg->has_fracval = 1;
tcfg->clocks = exynos4_serial_clocks;
tcfg->clocks_size = ARRAY_SIZE(exynos4_serial_clocks);
}
tcfg->flags |= NO_NEED_CHECK_CLKSRC;
}
s3c24xx_init_uartdevs("s5pv210-uart", s5p_uart_resources, cfg, no);
}

124
arch/arm/mach-exynos/irq-combiner.c
View file

@ -1,124 +0,0 @@
/* linux/arch/arm/mach-exynos4/irq-combiner.c
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Based on arch/arm/common/gic.c
*
* IRQ COMBINER 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/io.h>
#include <asm/mach/irq.h>
#define COMBINER_ENABLE_SET 0x0
#define COMBINER_ENABLE_CLEAR 0x4
#define COMBINER_INT_STATUS 0xC
static DEFINE_SPINLOCK(irq_controller_lock);
struct combiner_chip_data {
unsigned int irq_offset;
unsigned int irq_mask;
void __iomem *base;
};
static struct combiner_chip_data combiner_data[MAX_COMBINER_NR];
static inline void __iomem *combiner_base(struct irq_data *data)
{
struct combiner_chip_data *combiner_data =
irq_data_get_irq_chip_data(data);
return combiner_data->base;
}
static void combiner_mask_irq(struct irq_data *data)
{
u32 mask = 1 << (data->irq % 32);
__raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_CLEAR);
}
static void combiner_unmask_irq(struct irq_data *data)
{
u32 mask = 1 << (data->irq % 32);
__raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_SET);
}
static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
{
struct combiner_chip_data *chip_data = irq_get_handler_data(irq);
struct irq_chip *chip = irq_get_chip(irq);
unsigned int cascade_irq, combiner_irq;
unsigned long status;
chained_irq_enter(chip, desc);
spin_lock(&irq_controller_lock);
status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
spin_unlock(&irq_controller_lock);
status &= chip_data->irq_mask;
if (status == 0)
goto out;
combiner_irq = __ffs(status);
cascade_irq = combiner_irq + (chip_data->irq_offset & ~31);
if (unlikely(cascade_irq >= NR_IRQS))
do_bad_IRQ(cascade_irq, desc);
else
generic_handle_irq(cascade_irq);
out:
chained_irq_exit(chip, desc);
}
static struct irq_chip combiner_chip = {
.name = "COMBINER",
.irq_mask = combiner_mask_irq,
.irq_unmask = combiner_unmask_irq,
};
void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq)
{
if (combiner_nr >= MAX_COMBINER_NR)
BUG();
if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0)
BUG();
irq_set_chained_handler(irq, combiner_handle_cascade_irq);
}
void __init combiner_init(unsigned int combiner_nr, void __iomem *base,
unsigned int irq_start)
{
unsigned int i;
if (combiner_nr >= MAX_COMBINER_NR)
BUG();
combiner_data[combiner_nr].base = base;
combiner_data[combiner_nr].irq_offset = irq_start;
combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
/* Disable all interrupts */
__raw_writel(combiner_data[combiner_nr].irq_mask,
base + COMBINER_ENABLE_CLEAR);
/* Setup the Linux IRQ subsystem */
for (i = irq_start; i < combiner_data[combiner_nr].irq_offset
+ MAX_IRQ_IN_COMBINER; i++) {
irq_set_chip_and_handler(i, &combiner_chip, handle_level_irq);
irq_set_chip_data(i, &combiner_data[combiner_nr]);
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
}
}

237
arch/arm/mach-exynos/irq-eint.c
View file

@ -1,237 +0,0 @@
/* linux/arch/arm/mach-exynos4/irq-eint.c
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* EXYNOS4 - 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 <linux/gpio.h>
#include <plat/pm.h>
#include <plat/cpu.h>
#include <plat/gpio-cfg.h>
#include <mach/regs-gpio.h>
#include <asm/mach/irq.h>
static DEFINE_SPINLOCK(eint_lock);
static unsigned int eint0_15_data[16];
static unsigned int exynos4_get_irq_nr(unsigned int number)
{
u32 ret = 0;
switch (number) {
case 0 ... 3:
ret = (number + IRQ_EINT0);
break;
case 4 ... 7:
ret = (number + (IRQ_EINT4 - 4));
break;
case 8 ... 15:
ret = (number + (IRQ_EINT8 - 8));
break;
default:
printk(KERN_ERR "number available : %d\n", number);
}
return ret;
}
static inline void exynos4_irq_eint_mask(struct irq_data *data)
{
u32 mask;
spin_lock(&eint_lock);
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)));
spin_unlock(&eint_lock);
}
static void exynos4_irq_eint_unmask(struct irq_data *data)
{
u32 mask;
spin_lock(&eint_lock);
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)));
spin_unlock(&eint_lock);
}
static inline void exynos4_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 exynos4_irq_eint_maskack(struct irq_data *data)
{
exynos4_irq_eint_mask(data);
exynos4_irq_eint_ack(data);
}
static int exynos4_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;
spin_lock(&eint_lock);
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)));
spin_unlock(&eint_lock);
switch (offs) {
case 0 ... 7:
s3c_gpio_cfgpin(EINT_GPIO_0(offs & 0x7), EINT_MODE);
break;
case 8 ... 15:
s3c_gpio_cfgpin(EINT_GPIO_1(offs & 0x7), EINT_MODE);
break;
case 16 ... 23:
s3c_gpio_cfgpin(EINT_GPIO_2(offs & 0x7), EINT_MODE);
break;
case 24 ... 31:
s3c_gpio_cfgpin(EINT_GPIO_3(offs & 0x7), EINT_MODE);
break;
default:
printk(KERN_ERR "No such irq number %d", offs);
}
return 0;
}
static struct irq_chip exynos4_irq_eint = {
.name = "exynos4-eint",
.irq_mask = exynos4_irq_eint_mask,
.irq_unmask = exynos4_irq_eint_unmask,
.irq_mask_ack = exynos4_irq_eint_maskack,
.irq_ack = exynos4_irq_eint_ack,
.irq_set_type = exynos4_irq_eint_set_type,
#ifdef CONFIG_PM
.irq_set_wake = s3c_irqext_wake,
#endif
};
/* exynos4_irq_demux_eint
*
* This function demuxes the IRQ from 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 exynos4_irq_demux_eint(unsigned int start)
{
unsigned int irq;
u32 status = __raw_readl(S5P_EINT_PEND(EINT_REG_NR(start)));
u32 mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(start)));
status &= ~mask;
status &= 0xff;
while (status) {
irq = fls(status) - 1;
generic_handle_irq(irq + start);
status &= ~(1 << irq);
}
}
static void exynos4_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
{
struct irq_chip *chip = irq_get_chip(irq);
chained_irq_enter(chip, desc);
exynos4_irq_demux_eint(IRQ_EINT(16));
exynos4_irq_demux_eint(IRQ_EINT(24));
chained_irq_exit(chip, desc);
}
static void exynos4_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
{
u32 *irq_data = irq_get_handler_data(irq);
struct irq_chip *chip = irq_get_chip(irq);
chained_irq_enter(chip, desc);
chip->irq_mask(&desc->irq_data);
if (chip->irq_ack)
chip->irq_ack(&desc->irq_data);
generic_handle_irq(*irq_data);
chip->irq_unmask(&desc->irq_data);
chained_irq_exit(chip, desc);
}
int __init exynos4_init_irq_eint(void)
{
int irq;
for (irq = 0 ; irq <= 31 ; irq++) {
irq_set_chip_and_handler(IRQ_EINT(irq), &exynos4_irq_eint,
handle_level_irq);
set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
}
irq_set_chained_handler(IRQ_EINT16_31, exynos4_irq_demux_eint16_31);
for (irq = 0 ; irq <= 15 ; irq++) {
eint0_15_data[irq] = IRQ_EINT(irq);
irq_set_handler_data(exynos4_get_irq_nr(irq),
&eint0_15_data[irq]);
irq_set_chained_handler(exynos4_get_irq_nr(irq),
exynos4_irq_eint0_15);
}
return 0;
}
arch_initcall(exynos4_init_irq_eint);

5
arch/arm/mach-exynos/mach-armlex4210.c
View file

@ -20,7 +20,6 @@
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/exynos4.h>
#include <plat/gpio-cfg.h>
#include <plat/regs-serial.h>
#include <plat/regs-srom.h>
@ -28,6 +27,8 @@
#include <mach/map.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define ARMLEX4210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
@ -187,7 +188,7 @@ static void __init armlex4210_smsc911x_init(void)
static void __init armlex4210_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
s3c24xx_init_uarts(armlex4210_uartcfgs,
ARRAY_SIZE(armlex4210_uartcfgs));

5
arch/arm/mach-exynos/mach-nuri.c
View file

@ -37,7 +37,6 @@
#include <plat/adc.h>
#include <plat/regs-fb-v4.h>
#include <plat/regs-serial.h>
#include <plat/exynos4.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/fb.h>
@ -54,6 +53,8 @@
#include <mach/map.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define NURI_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
@ -1283,7 +1284,7 @@ static struct platform_device *nuri_devices[] __initdata = {
static void __init nuri_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
s3c24xx_init_uarts(nuri_uartcfgs, ARRAY_SIZE(nuri_uartcfgs));
}

5
arch/arm/mach-exynos/mach-origen.c
View file

@ -28,7 +28,6 @@
#include <plat/regs-serial.h>
#include <plat/regs-fb-v4.h>
#include <plat/exynos4.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/sdhci.h>
@ -43,6 +42,8 @@
#include <mach/map.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define ORIGEN_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
@ -638,7 +639,7 @@ static void s5p_tv_setup(void)
static void __init origen_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
s3c24xx_init_uarts(origen_uartcfgs, ARRAY_SIZE(origen_uartcfgs));
}

5
arch/arm/mach-exynos/mach-smdk4x12.c
View file

@ -27,7 +27,6 @@
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/exynos4.h>
#include <plat/gpio-cfg.h>
#include <plat/iic.h>
#include <plat/keypad.h>
@ -36,6 +35,8 @@
#include <mach/map.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDK4X12_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
@ -249,7 +250,7 @@ static void __init smdk4x12_map_io(void)
{
clk_xusbxti.rate = 24000000;
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(clk_xusbxti.rate);
s3c24xx_init_uarts(smdk4x12_uartcfgs, ARRAY_SIZE(smdk4x12_uartcfgs));
}

5
arch/arm/mach-exynos/mach-smdkv310.c
View file

@ -27,7 +27,6 @@
#include <plat/regs-serial.h>
#include <plat/regs-srom.h>
#include <plat/regs-fb-v4.h>
#include <plat/exynos4.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/fb.h>
@ -43,6 +42,8 @@
#include <mach/map.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDKV310_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
@ -332,7 +333,7 @@ static void s5p_tv_setup(void)
static void __init smdkv310_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
s3c24xx_init_uarts(smdkv310_uartcfgs, ARRAY_SIZE(smdkv310_uartcfgs));
}

5
arch/arm/mach-exynos/mach-universal_c210.c
View file

@ -27,7 +27,6 @@
#include <asm/mach-types.h>
#include <plat/regs-serial.h>
#include <plat/exynos4.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/iic.h>
@ -47,6 +46,8 @@
#include <media/s5p_fimc.h>
#include <media/m5mols.h>
#include "common.h"
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define UNIVERSAL_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
S3C2410_UCON_RXILEVEL | \
@ -992,7 +993,7 @@ static struct platform_device *universal_devices[] __initdata = {
static void __init universal_map_io(void)
{
s5p_init_io(NULL, 0, S5P_VA_CHIPID);
exynos_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
s3c24xx_init_uarts(universal_uartcfgs, ARRAY_SIZE(universal_uartcfgs));
}

1
arch/arm/plat-s5p/Makefile
View file

@ -13,7 +13,6 @@ obj- :=
# Core files
obj-y += dev-uart.o
obj-y += cpu.o
obj-y += clock.o
obj-y += irq.o
obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o

104
arch/arm/plat-s5p/cpu.c
View file

@ -1,104 +0,0 @@
/* linux/arch/arm/plat-s5p/cpu.c
*
* Copyright (c) 2009-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* S5P CPU 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/init.h>
#include <linux/module.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <plat/cpu.h>
#include <plat/exynos4.h>
/* table of supported CPUs */
static const char name_exynos4210[] = "EXYNOS4210";
static const char name_exynos4212[] = "EXYNOS4212";
static const char name_exynos4412[] = "EXYNOS4412";
static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = EXYNOS4210_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_clocks = exynos4_init_clocks,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4210,
}, {
.idcode = EXYNOS4212_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_clocks = exynos4_init_clocks,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4212,
}, {
.idcode = EXYNOS4412_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_clocks = exynos4_init_clocks,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4412,
},
};
/* minimal IO mapping */
static struct map_desc s5p_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_CHIPID,
.pfn = __phys_to_pfn(S5P_PA_CHIPID),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_SYS,
.pfn = __phys_to_pfn(S5P_PA_SYSCON),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_TIMER,
.pfn = __phys_to_pfn(S5P_PA_TIMER),
.length = SZ_16K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_WATCHDOG,
.pfn = __phys_to_pfn(S3C_PA_WDT),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SROMC,
.pfn = __phys_to_pfn(S5P_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
/* read cpu identification code */
void __init s5p_init_io(struct map_desc *mach_desc,
int size, void __iomem *cpuid_addr)
{
/* initialize the io descriptors we need for initialization */
iotable_init(s5p_iodesc, ARRAY_SIZE(s5p_iodesc));
if (mach_desc)
iotable_init(mach_desc, size);
/* detect cpu id and rev. */
s5p_init_cpu(cpuid_addr);
s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
}

2
arch/arm/plat-samsung/include/plat/cpu.h
View file

@ -155,8 +155,6 @@ extern void s3c24xx_init_irq(void);
extern void s5p_init_irq(u32 *vic, u32 num_vic);
extern void s3c24xx_init_io(struct map_desc *mach_desc, int size);
extern void s5p_init_io(struct map_desc *mach_desc,
int size, void __iomem *cpuid_addr);
extern void s3c24xx_init_cpu(void);
extern void s3c64xx_init_cpu(void);

35
arch/arm/plat-samsung/include/plat/exynos4.h
View file

@ -1,35 +0,0 @@
/* linux/arch/arm/plat-samsung/include/plat/exynos4.h
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Header file for exynos4 cpu 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.
*/
/* Common init code for EXYNOS4 related SoCs */
extern void exynos4_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
extern void exynos4_register_clocks(void);
extern void exynos4210_register_clocks(void);
extern void exynos4212_register_clocks(void);
extern void exynos4_setup_clocks(void);
#ifdef CONFIG_ARCH_EXYNOS
extern int exynos_init(void);
extern void exynos4_init_irq(void);
extern void exynos4_map_io(void);
extern void exynos4_init_clocks(int xtal);
extern struct sys_timer exynos4_timer;
#define exynos4_init_uarts exynos4_common_init_uarts
#else
#define exynos4_init_clocks NULL
#define exynos4_init_uarts NULL
#define exynos4_map_io NULL
#define exynos_init NULL
#endif