/*
* 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/bitops.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/io.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <clocksource/samsung_pwm.h>
#include <linux/sched.h>
#include <linux/serial_core.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_irq.h>
#include <linux/export.h>
#include <linux/irqdomain.h>
#include <linux/of_address.h>
#include <linux/clocksource.h>
#include <linux/clk-provider.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/irqchip/chained_irq.h>
#include <asm/proc-fns.h>
#include <asm/exception.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/cacheflush.h>
#include <mach/regs-irq.h>
#include <mach/regs-pmu.h>
#include <mach/regs-gpio.h>
#include <mach/irqs.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/pm.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/spi-core.h>
#include <plat/regs-serial.h>
#include "common.h"
#define L2_AUX_VAL 0x7C470001
#define L2_AUX_MASK 0xC200ffff
static const char name_exynos4210[] = "EXYNOS4210";
static const char name_exynos4212[] = "EXYNOS4212";
static const char name_exynos4412[] = "EXYNOS4412";
static const char name_exynos5250[] = "EXYNOS5250";
static const char name_exynos5440[] = "EXYNOS5440";
static void exynos4_map_io(void);
static void exynos5_map_io(void);
static void exynos5440_map_io(void);
static void exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no);
static int exynos_init(void);
unsigned long xxti_f = 0, xusbxti_f = 0;
static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = EXYNOS4210_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.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_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4212,
}, {
.idcode = EXYNOS4412_CPU_ID,
.idmask = EXYNOS4_CPU_MASK,
.map_io = exynos4_map_io,
.init_uarts = exynos4_init_uarts,
.init = exynos_init,
.name = name_exynos4412,
}, {
.idcode = EXYNOS5250_SOC_ID,
.idmask = EXYNOS5_SOC_MASK,
.map_io = exynos5_map_io,
.init = exynos_init,
.name = name_exynos5250,
}, {
.idcode = EXYNOS5440_SOC_ID,
.idmask = EXYNOS5_SOC_MASK,
.map_io = exynos5440_map_io,
.init = exynos_init,
.name = name_exynos5440,
},
};
/* Initial IO mappings */
static struct map_desc exynos_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_CHIPID,
.pfn = __phys_to_pfn(EXYNOS_PA_CHIPID),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4_iodesc[] __initdata = {
{
.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,
}, {
.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_DMC0,
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_DMC1,
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC1),
.length = SZ_64K,
.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 struct map_desc exynos4210_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM_NS,
.pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos4x12_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM_NS,
.pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos5250_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5P_VA_SYSRAM_NS,
.pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS),
.length = SZ_4K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos5_iodesc[] __initdata = {
{
.virtual = (unsigned long)S3C_VA_SYS,
.pfn = __phys_to_pfn(EXYNOS5_PA_SYSCON),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_TIMER,
.pfn = __phys_to_pfn(EXYNOS5_PA_TIMER),
.length = SZ_16K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_WATCHDOG,
.pfn = __phys_to_pfn(EXYNOS5_PA_WATCHDOG),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SROMC,
.pfn = __phys_to_pfn(EXYNOS5_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_SYSRAM,
.pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_CMU,
.pfn = __phys_to_pfn(EXYNOS5_PA_CMU),
.length = 144 * SZ_1K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5P_VA_PMU,
.pfn = __phys_to_pfn(EXYNOS5_PA_PMU),
.length = SZ_64K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S3C_VA_UART,
.pfn = __phys_to_pfn(EXYNOS5_PA_UART),
.length = SZ_512K,
.type = MT_DEVICE,
},
};
static struct map_desc exynos5440_iodesc0[] __initdata = {
{
.virtual = (unsigned long)S3C_VA_UART,
.pfn = __phys_to_pfn(EXYNOS5440_PA_UART0),
.length = SZ_512K,
.type = MT_DEVICE,
},
};
static struct samsung_pwm_variant exynos4_pwm_variant = {
.bits = 32,
.div_base = 0,
.has_tint_cstat = true,
.tclk_mask = 0,
};
void exynos4_restart(char mode, const char *cmd)
{
__raw_writel(0x1, S5P_SWRESET);
}
void exynos5_restart(char mode, const char *cmd)
{
struct device_node *np;
u32 val;
void __iomem *addr;
if (of_machine_is_compatible("samsung,exynos5250")) {
val = 0x1;
addr = EXYNOS_SWRESET;
} else if (of_machine_is_compatible("samsung,exynos5440")) {
u32 status;
np = of_find_compatible_node(NULL, NULL, "samsung,exynos5440-clock");
addr = of_iomap(np, 0) + 0xbc;
status = __raw_readl(addr);
addr = of_iomap(np, 0) + 0xcc;
val = __raw_readl(addr);
val = (val & 0xffff0000) | (status & 0xffff);
} else {
pr_err("%s: cannot support non-DT\n", __func__);
return;
}
__raw_writel(val, addr);
}
void __init exynos_init_late(void)
{
if (of_machine_is_compatible("samsung,exynos5440"))
/* to be supported later */
return;
exynos_pm_late_initcall();
}
#ifdef CONFIG_OF
int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
int depth, void *data)
{
struct map_desc iodesc;
__be32 *reg;
unsigned long len;
if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") &&
!of_flat_dt_is_compatible(node, "samsung,exynos5440-clock"))
return 0;
reg = of_get_flat_dt_prop(node, "reg", &len);
if (reg == NULL || len != (sizeof(unsigned long) * 2))
return 0;
iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0]));
iodesc.length = be32_to_cpu(reg[1]) - 1;
iodesc.virtual = (unsigned long)S5P_VA_CHIPID;
iodesc.type = MT_DEVICE;
iotable_init(&iodesc, 1);
return 1;
}
#endif
/*
* exynos_map_io
*
* register the standard cpu IO areas
*/
void __init exynos_init_io(struct map_desc *mach_desc, int size)
{
debug_ll_io_init();
#ifdef CONFIG_OF
if (initial_boot_params)
of_scan_flat_dt(exynos_fdt_map_chipid, NULL);
else
#endif
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));
}
static 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));
if (soc_is_exynos4210())
iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
if (soc_is_exynos4212() || soc_is_exynos4412())
iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
/* 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");
s3c_sdhci_setname(0, "exynos4-sdhci");
s3c_sdhci_setname(1, "exynos4-sdhci");
s3c_sdhci_setname(2, "exynos4-sdhci");
s3c_sdhci_setname(3, "exynos4-sdhci");
/* 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");
s3c64xx_spi_setname("exynos4210-spi");
}
static void __init exynos5_map_io(void)
{
iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
if (soc_is_exynos5250())
iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
}
static void __init exynos5440_map_io(void)
{
iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0));
}
void __init exynos_set_timer_source(u8 channels)
{
exynos4_pwm_variant.output_mask = BIT(SAMSUNG_PWM_NUM) - 1;
exynos4_pwm_variant.output_mask &= ~channels;
}
void __init exynos_init_time(void)
{
unsigned int timer_irqs[SAMSUNG_PWM_NUM] = {
EXYNOS4_IRQ_TIMER0_VIC, EXYNOS4_IRQ_TIMER1_VIC,
EXYNOS4_IRQ_TIMER2_VIC, EXYNOS4_IRQ_TIMER3_VIC,
EXYNOS4_IRQ_TIMER4_VIC,
};
if (of_have_populated_dt()) {
#ifdef CONFIG_OF
of_clk_init(NULL);
clocksource_of_init();
#endif
} else {
/* todo: remove after migrating legacy E4 platforms to dt */
#ifdef CONFIG_ARCH_EXYNOS4
exynos4_clk_init(NULL, !soc_is_exynos4210(), S5P_VA_CMU, readl(S5P_VA_CHIPID + 8) & 1);
exynos4_clk_register_fixed_ext(xxti_f, xusbxti_f);
#endif
#ifdef CONFIG_CLKSRC_SAMSUNG_PWM
if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
samsung_pwm_clocksource_init(S3C_VA_TIMER,
timer_irqs, &exynos4_pwm_variant);
else
#endif
mct_init(S5P_VA_SYSTIMER, EXYNOS4_IRQ_MCT_G0,
EXYNOS4_IRQ_MCT_L0, EXYNOS4_IRQ_MCT_L1);
}
}
static unsigned int max_combiner_nr(void)
{
if (soc_is_exynos5250())
return EXYNOS5_MAX_COMBINER_NR;
else if (soc_is_exynos4412())
return EXYNOS4412_MAX_COMBINER_NR;
else if (soc_is_exynos4212())
return EXYNOS4212_MAX_COMBINER_NR;
else
return EXYNOS4210_MAX_COMBINER_NR;
}
void __init exynos4_init_irq(void)
{
unsigned int gic_bank_offset;
gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
if (!of_have_populated_dt())
gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL);
#ifdef CONFIG_OF
else
irqchip_init();
#endif
if (!of_have_populated_dt())
combiner_init(S5P_VA_COMBINER_BASE, NULL,
max_combiner_nr(), COMBINER_IRQ(0, 0));
gic_arch_extn.irq_set_wake = s3c_irq_wake;
}
void __init exynos5_init_irq(void)
{
#ifdef CONFIG_OF
irqchip_init();
#endif
gic_arch_extn.irq_set_wake = s3c_irq_wake;
}
struct bus_type exynos_subsys = {
.name = "exynos-core",
.dev_name = "exynos-core",
};
static struct device exynos4_dev = {
.bus = &exynos_subsys,
};
static int __init exynos_core_init(void)
{
return subsys_system_register(&exynos_subsys, NULL);
}
core_initcall(exynos_core_init);
#ifdef CONFIG_CACHE_L2X0
static int __init exynos4_l2x0_cache_init(void)
{
int ret;
if (soc_is_exynos5250() || soc_is_exynos5440())
return 0;
ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
if (!ret) {
l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
return 0;
}
if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {
l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;
/* TAG, Data Latency Control: 2 cycles */
l2x0_saved_regs.tag_latency = 0x110;
if (soc_is_exynos4212() || soc_is_exynos4412())
l2x0_saved_regs.data_latency = 0x120;
else
l2x0_saved_regs.data_latency = 0x110;
l2x0_saved_regs.prefetch_ctrl = 0x30000007;
l2x0_saved_regs.pwr_ctrl =
(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN);
l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
__raw_writel(l2x0_saved_regs.tag_latency,
S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
__raw_writel(l2x0_saved_regs.data_latency,
S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
/* L2X0 Prefetch Control */
__raw_writel(l2x0_saved_regs.prefetch_ctrl,
S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
/* L2X0 Power Control */
__raw_writel(l2x0_saved_regs.pwr_ctrl,
S5P_VA_L2CC + L2X0_POWER_CTRL);
clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));
}
l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);
return 0;
}
early_initcall(exynos4_l2x0_cache_init);
#endif
static int __init exynos_init(void)
{
printk(KERN_INFO "EXYNOS: Initializing architecture\n");
return device_register(&exynos4_dev);
}
/* uart registration process */
static 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++)
tcfg->has_fracval = 1;
s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no);
}
static void __iomem *exynos_eint_base;
static DEFINE_SPINLOCK(eint_lock);
static unsigned int eint0_15_data[16];
static inline int exynos4_irq_to_gpio(unsigned int irq)
{
if (irq < IRQ_EINT(0))
return -EINVAL;
irq -= IRQ_EINT(0);
if (irq < 8)
return EXYNOS4_GPX0(irq);
irq -= 8;
if (irq < 8)
return EXYNOS4_GPX1(irq);
irq -= 8;
if (irq < 8)
return EXYNOS4_GPX2(irq);
irq -= 8;
if (irq < 8)
return EXYNOS4_GPX3(irq);
return -EINVAL;
}
static inline int exynos5_irq_to_gpio(unsigned int irq)
{
if (irq < IRQ_EINT(0))
return -EINVAL;
irq -= IRQ_EINT(0);
if (irq < 8)
return EXYNOS5_GPX0(irq);
irq -= 8;
if (irq < 8)
return EXYNOS5_GPX1(irq);
irq -= 8;
if (irq < 8)
return EXYNOS5_GPX2(irq);
irq -= 8;
if (irq < 8)
return EXYNOS5_GPX3(irq);
return -EINVAL;
}
static unsigned int exynos4_eint0_15_src_int[16] = {
EXYNOS4_IRQ_EINT0,
EXYNOS4_IRQ_EINT1,
EXYNOS4_IRQ_EINT2,
EXYNOS4_IRQ_EINT3,
EXYNOS4_IRQ_EINT4,
EXYNOS4_IRQ_EINT5,
EXYNOS4_IRQ_EINT6,
EXYNOS4_IRQ_EINT7,
EXYNOS4_IRQ_EINT8,
EXYNOS4_IRQ_EINT9,
EXYNOS4_IRQ_EINT10,
EXYNOS4_IRQ_EINT11,
EXYNOS4_IRQ_EINT12,
EXYNOS4_IRQ_EINT13,
EXYNOS4_IRQ_EINT14,
EXYNOS4_IRQ_EINT15,
};
static unsigned int exynos5_eint0_15_src_int[16] = {
EXYNOS5_IRQ_EINT0,
EXYNOS5_IRQ_EINT1,
EXYNOS5_IRQ_EINT2,
EXYNOS5_IRQ_EINT3,
EXYNOS5_IRQ_EINT4,
EXYNOS5_IRQ_EINT5,
EXYNOS5_IRQ_EINT6,
EXYNOS5_IRQ_EINT7,
EXYNOS5_IRQ_EINT8,
EXYNOS5_IRQ_EINT9,
EXYNOS5_IRQ_EINT10,
EXYNOS5_IRQ_EINT11,
EXYNOS5_IRQ_EINT12,
EXYNOS5_IRQ_EINT13,
EXYNOS5_IRQ_EINT14,
EXYNOS5_IRQ_EINT15,
};
static inline void exynos_irq_eint_mask(struct irq_data *data)
{
u32 mask;
spin_lock(&eint_lock);
mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
mask |= EINT_OFFSET_BIT(data->irq);
__raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
spin_unlock(&eint_lock);
}
static void exynos_irq_eint_unmask(struct irq_data *data)
{
u32 mask;
spin_lock(&eint_lock);
mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
mask &= ~(EINT_OFFSET_BIT(data->irq));
__raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
spin_unlock(&eint_lock);
}
static inline void exynos_irq_eint_ack(struct irq_data *data)
{
__raw_writel(EINT_OFFSET_BIT(data->irq),
EINT_PEND(exynos_eint_base, data->irq));
}
static void exynos_irq_eint_maskack(struct irq_data *data)
{
exynos_irq_eint_mask(data);
exynos_irq_eint_ack(data);
}
static int exynos_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(EINT_CON(exynos_eint_base, data->irq));
ctrl &= ~mask;
ctrl |= newvalue << shift;
__raw_writel(ctrl, EINT_CON(exynos_eint_base, data->irq));
spin_unlock(&eint_lock);
if (soc_is_exynos5250())
s3c_gpio_cfgpin(exynos5_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
else
s3c_gpio_cfgpin(exynos4_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
return 0;
}
static struct irq_chip exynos_irq_eint = {
.name = "exynos-eint",
.irq_mask = exynos_irq_eint_mask,
.irq_unmask = exynos_irq_eint_unmask,
.irq_mask_ack = exynos_irq_eint_maskack,
.irq_ack = exynos_irq_eint_ack,
.irq_set_type = exynos_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 exynos_irq_demux_eint(unsigned int start)
{
unsigned int irq;
u32 status = __raw_readl(EINT_PEND(exynos_eint_base, start));
u32 mask = __raw_readl(EINT_MASK(exynos_eint_base, start));
status &= ~mask;
status &= 0xff;
while (status) {
irq = fls(status) - 1;
generic_handle_irq(irq + start);
status &= ~(1 << irq);
}
}
static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
{
struct irq_chip *chip = irq_get_chip(irq);
chained_irq_enter(chip, desc);
exynos_irq_demux_eint(IRQ_EINT(16));
exynos_irq_demux_eint(IRQ_EINT(24));
chained_irq_exit(chip, desc);
}
static void exynos_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);
generic_handle_irq(*irq_data);
chained_irq_exit(chip, desc);
}
static int __init exynos_init_irq_eint(void)
{
int irq;
#ifdef CONFIG_PINCTRL_SAMSUNG
/*
* The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf
* functionality along with support for external gpio and wakeup
* interrupts. If the samsung pinctrl driver is enabled and includes
* the wakeup interrupt support, then the setting up external wakeup
* interrupts here can be skipped. This check here is temporary to
* allow exynos4 platforms that do not use Samsung pinctrl driver to
* co-exist with platforms that do. When all of the Samsung Exynos4
* platforms switch over to using the pinctrl driver, the wakeup
* interrupt support code here can be completely removed.
*/
static const struct of_device_id exynos_pinctrl_ids[] = {
{ .compatible = "samsung,exynos4210-pinctrl", },
{ .compatible = "samsung,exynos4x12-pinctrl", },
{ .compatible = "samsung,exynos5250-pinctrl", },
};
struct device_node *pctrl_np, *wkup_np;
const char *wkup_compat = "samsung,exynos4210-wakeup-eint";
for_each_matching_node(pctrl_np, exynos_pinctrl_ids) {
if (of_device_is_available(pctrl_np)) {
wkup_np = of_find_compatible_node(pctrl_np, NULL,
wkup_compat);
if (wkup_np)
return -ENODEV;
}
}
#endif
if (soc_is_exynos5440())
return 0;
if (soc_is_exynos5250())
exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
else
exynos_eint_base = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
if (exynos_eint_base == NULL) {
pr_err("unable to ioremap for EINT base address\n");
return -ENOMEM;
}
for (irq = 0 ; irq <= 31 ; irq++) {
irq_set_chip_and_handler(IRQ_EINT(irq), &exynos_irq_eint,
handle_level_irq);
set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
}
irq_set_chained_handler(EXYNOS_IRQ_EINT16_31, exynos_irq_demux_eint16_31);
for (irq = 0 ; irq <= 15 ; irq++) {
eint0_15_data[irq] = IRQ_EINT(irq);
if (soc_is_exynos5250()) {
irq_set_handler_data(exynos5_eint0_15_src_int[irq],
&eint0_15_data[irq]);
irq_set_chained_handler(exynos5_eint0_15_src_int[irq],
exynos_irq_eint0_15);
} else {
irq_set_handler_data(exynos4_eint0_15_src_int[irq],
&eint0_15_data[irq]);
irq_set_chained_handler(exynos4_eint0_15_src_int[irq],
exynos_irq_eint0_15);
}
}
return 0;
}
arch_initcall(exynos_init_irq_eint);
static struct resource exynos4_pmu_resource[] = {
DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU),
DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU1),
#if defined(CONFIG_SOC_EXYNOS4412)
DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU2),
DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU3),
#endif
};
static struct platform_device exynos4_device_pmu = {
.name = "arm-pmu",
.num_resources = ARRAY_SIZE(exynos4_pmu_resource),
.resource = exynos4_pmu_resource,
};
static int __init exynos_armpmu_init(void)
{
if (!of_have_populated_dt()) {
if (soc_is_exynos4210() || soc_is_exynos4212())
exynos4_device_pmu.num_resources = 2;
platform_device_register(&exynos4_device_pmu);
}
return 0;
}
arch_initcall(exynos_armpmu_init);