2 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
3 * http://www.samsung.com
5 * Common Codes for EXYNOS
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/interrupt.h>
14 #include <linux/irq.h>
15 #include <linux/irqchip.h>
17 #include <linux/device.h>
18 #include <linux/gpio.h>
19 #include <linux/sched.h>
20 #include <linux/serial_core.h>
22 #include <linux/of_fdt.h>
23 #include <linux/of_irq.h>
24 #include <linux/export.h>
25 #include <linux/irqdomain.h>
26 #include <linux/irqchip.h>
27 #include <linux/of_address.h>
28 #include <linux/clocksource.h>
29 #include <linux/clk-provider.h>
30 #include <linux/irqchip/arm-gic.h>
32 #include <asm/proc-fns.h>
33 #include <asm/exception.h>
34 #include <asm/hardware/cache-l2x0.h>
35 #include <asm/mach/map.h>
36 #include <asm/mach/irq.h>
37 #include <asm/cacheflush.h>
39 #include <mach/regs-irq.h>
40 #include <mach/regs-pmu.h>
41 #include <mach/regs-gpio.h>
42 #include <mach/irqs.h>
45 #include <plat/devs.h>
47 #include <plat/sdhci.h>
48 #include <plat/gpio-cfg.h>
49 #include <plat/adc-core.h>
50 #include <plat/fb-core.h>
51 #include <plat/fimc-core.h>
52 #include <plat/iic-core.h>
53 #include <plat/tv-core.h>
54 #include <plat/spi-core.h>
55 #include <plat/regs-serial.h>
58 #define L2_AUX_VAL 0x7C470001
59 #define L2_AUX_MASK 0xC200ffff
61 static const char name_exynos4210
[] = "EXYNOS4210";
62 static const char name_exynos4212
[] = "EXYNOS4212";
63 static const char name_exynos4412
[] = "EXYNOS4412";
64 static const char name_exynos5250
[] = "EXYNOS5250";
65 static const char name_exynos5440
[] = "EXYNOS5440";
67 static void exynos4_map_io(void);
68 static void exynos5_map_io(void);
69 static void exynos5440_map_io(void);
70 static void exynos4_init_uarts(struct s3c2410_uartcfg
*cfg
, int no
);
71 static int exynos_init(void);
73 unsigned long xxti_f
= 0, xusbxti_f
= 0;
75 static struct cpu_table cpu_ids
[] __initdata
= {
77 .idcode
= EXYNOS4210_CPU_ID
,
78 .idmask
= EXYNOS4_CPU_MASK
,
79 .map_io
= exynos4_map_io
,
80 .init_uarts
= exynos4_init_uarts
,
82 .name
= name_exynos4210
,
84 .idcode
= EXYNOS4212_CPU_ID
,
85 .idmask
= EXYNOS4_CPU_MASK
,
86 .map_io
= exynos4_map_io
,
87 .init_uarts
= exynos4_init_uarts
,
89 .name
= name_exynos4212
,
91 .idcode
= EXYNOS4412_CPU_ID
,
92 .idmask
= EXYNOS4_CPU_MASK
,
93 .map_io
= exynos4_map_io
,
94 .init_uarts
= exynos4_init_uarts
,
96 .name
= name_exynos4412
,
98 .idcode
= EXYNOS5250_SOC_ID
,
99 .idmask
= EXYNOS5_SOC_MASK
,
100 .map_io
= exynos5_map_io
,
102 .name
= name_exynos5250
,
104 .idcode
= EXYNOS5440_SOC_ID
,
105 .idmask
= EXYNOS5_SOC_MASK
,
106 .map_io
= exynos5440_map_io
,
108 .name
= name_exynos5440
,
112 /* Initial IO mappings */
114 static struct map_desc exynos_iodesc
[] __initdata
= {
116 .virtual = (unsigned long)S5P_VA_CHIPID
,
117 .pfn
= __phys_to_pfn(EXYNOS_PA_CHIPID
),
123 #ifdef CONFIG_ARCH_EXYNOS5
124 static struct map_desc exynos5440_iodesc
[] __initdata
= {
126 .virtual = (unsigned long)S5P_VA_CHIPID
,
127 .pfn
= __phys_to_pfn(EXYNOS5440_PA_CHIPID
),
134 static struct map_desc exynos4_iodesc
[] __initdata
= {
136 .virtual = (unsigned long)S3C_VA_SYS
,
137 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSCON
),
141 .virtual = (unsigned long)S3C_VA_TIMER
,
142 .pfn
= __phys_to_pfn(EXYNOS4_PA_TIMER
),
146 .virtual = (unsigned long)S3C_VA_WATCHDOG
,
147 .pfn
= __phys_to_pfn(EXYNOS4_PA_WATCHDOG
),
151 .virtual = (unsigned long)S5P_VA_SROMC
,
152 .pfn
= __phys_to_pfn(EXYNOS4_PA_SROMC
),
156 .virtual = (unsigned long)S5P_VA_SYSTIMER
,
157 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSTIMER
),
161 .virtual = (unsigned long)S5P_VA_PMU
,
162 .pfn
= __phys_to_pfn(EXYNOS4_PA_PMU
),
166 .virtual = (unsigned long)S5P_VA_COMBINER_BASE
,
167 .pfn
= __phys_to_pfn(EXYNOS4_PA_COMBINER
),
171 .virtual = (unsigned long)S5P_VA_GIC_CPU
,
172 .pfn
= __phys_to_pfn(EXYNOS4_PA_GIC_CPU
),
176 .virtual = (unsigned long)S5P_VA_GIC_DIST
,
177 .pfn
= __phys_to_pfn(EXYNOS4_PA_GIC_DIST
),
181 .virtual = (unsigned long)S3C_VA_UART
,
182 .pfn
= __phys_to_pfn(EXYNOS4_PA_UART
),
186 .virtual = (unsigned long)S5P_VA_CMU
,
187 .pfn
= __phys_to_pfn(EXYNOS4_PA_CMU
),
191 .virtual = (unsigned long)S5P_VA_COREPERI_BASE
,
192 .pfn
= __phys_to_pfn(EXYNOS4_PA_COREPERI
),
196 .virtual = (unsigned long)S5P_VA_L2CC
,
197 .pfn
= __phys_to_pfn(EXYNOS4_PA_L2CC
),
201 .virtual = (unsigned long)S5P_VA_DMC0
,
202 .pfn
= __phys_to_pfn(EXYNOS4_PA_DMC0
),
206 .virtual = (unsigned long)S5P_VA_DMC1
,
207 .pfn
= __phys_to_pfn(EXYNOS4_PA_DMC1
),
211 .virtual = (unsigned long)S3C_VA_USB_HSPHY
,
212 .pfn
= __phys_to_pfn(EXYNOS4_PA_HSPHY
),
218 static struct map_desc exynos4_iodesc0
[] __initdata
= {
220 .virtual = (unsigned long)S5P_VA_SYSRAM
,
221 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSRAM0
),
227 static struct map_desc exynos4_iodesc1
[] __initdata
= {
229 .virtual = (unsigned long)S5P_VA_SYSRAM
,
230 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSRAM1
),
236 static struct map_desc exynos5_iodesc
[] __initdata
= {
238 .virtual = (unsigned long)S3C_VA_SYS
,
239 .pfn
= __phys_to_pfn(EXYNOS5_PA_SYSCON
),
243 .virtual = (unsigned long)S3C_VA_TIMER
,
244 .pfn
= __phys_to_pfn(EXYNOS5_PA_TIMER
),
248 .virtual = (unsigned long)S3C_VA_WATCHDOG
,
249 .pfn
= __phys_to_pfn(EXYNOS5_PA_WATCHDOG
),
253 .virtual = (unsigned long)S5P_VA_SROMC
,
254 .pfn
= __phys_to_pfn(EXYNOS5_PA_SROMC
),
258 .virtual = (unsigned long)S5P_VA_SYSRAM
,
259 .pfn
= __phys_to_pfn(EXYNOS5_PA_SYSRAM
),
263 .virtual = (unsigned long)S5P_VA_CMU
,
264 .pfn
= __phys_to_pfn(EXYNOS5_PA_CMU
),
265 .length
= 144 * SZ_1K
,
268 .virtual = (unsigned long)S5P_VA_PMU
,
269 .pfn
= __phys_to_pfn(EXYNOS5_PA_PMU
),
273 .virtual = (unsigned long)S3C_VA_UART
,
274 .pfn
= __phys_to_pfn(EXYNOS5_PA_UART
),
280 static struct map_desc exynos5440_iodesc0
[] __initdata
= {
282 .virtual = (unsigned long)S3C_VA_UART
,
283 .pfn
= __phys_to_pfn(EXYNOS5440_PA_UART0
),
289 void exynos4_restart(char mode
, const char *cmd
)
291 __raw_writel(0x1, S5P_SWRESET
);
294 void exynos5_restart(char mode
, const char *cmd
)
296 struct device_node
*np
;
300 if (of_machine_is_compatible("samsung,exynos5250")) {
302 addr
= EXYNOS_SWRESET
;
303 } else if (of_machine_is_compatible("samsung,exynos5440")) {
304 np
= of_find_compatible_node(NULL
, NULL
, "samsung,exynos5440-clock");
305 addr
= of_iomap(np
, 0) + 0xcc;
306 val
= (0xfff << 20) | (0x1 << 16);
308 pr_err("%s: cannot support non-DT\n", __func__
);
312 __raw_writel(val
, addr
);
315 void __init
exynos_init_late(void)
317 if (of_machine_is_compatible("samsung,exynos5440"))
318 /* to be supported later */
321 exynos_pm_late_initcall();
327 * register the standard cpu IO areas
330 void __init
exynos_init_io(struct map_desc
*mach_desc
, int size
)
332 struct map_desc
*iodesc
= exynos_iodesc
;
333 int iodesc_sz
= ARRAY_SIZE(exynos_iodesc
);
334 #if defined(CONFIG_OF) && defined(CONFIG_ARCH_EXYNOS5)
335 unsigned long root
= of_get_flat_dt_root();
337 /* initialize the io descriptors we need for initialization */
338 if (of_flat_dt_is_compatible(root
, "samsung,exynos5440")) {
339 iodesc
= exynos5440_iodesc
;
340 iodesc_sz
= ARRAY_SIZE(exynos5440_iodesc
);
344 iotable_init(iodesc
, iodesc_sz
);
347 iotable_init(mach_desc
, size
);
349 /* detect cpu id and rev. */
350 s5p_init_cpu(S5P_VA_CHIPID
);
352 s3c_init_cpu(samsung_cpu_id
, cpu_ids
, ARRAY_SIZE(cpu_ids
));
355 static void __init
exynos4_map_io(void)
357 iotable_init(exynos4_iodesc
, ARRAY_SIZE(exynos4_iodesc
));
359 if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0
)
360 iotable_init(exynos4_iodesc0
, ARRAY_SIZE(exynos4_iodesc0
));
362 iotable_init(exynos4_iodesc1
, ARRAY_SIZE(exynos4_iodesc1
));
364 if (!IS_ENABLED(CONFIG_EXYNOS_ATAGS
))
367 /* initialize device information early */
368 exynos4_default_sdhci0();
369 exynos4_default_sdhci1();
370 exynos4_default_sdhci2();
371 exynos4_default_sdhci3();
373 s3c_adc_setname("samsung-adc-v3");
375 s3c_fimc_setname(0, "exynos4-fimc");
376 s3c_fimc_setname(1, "exynos4-fimc");
377 s3c_fimc_setname(2, "exynos4-fimc");
378 s3c_fimc_setname(3, "exynos4-fimc");
380 s3c_sdhci_setname(0, "exynos4-sdhci");
381 s3c_sdhci_setname(1, "exynos4-sdhci");
382 s3c_sdhci_setname(2, "exynos4-sdhci");
383 s3c_sdhci_setname(3, "exynos4-sdhci");
385 /* The I2C bus controllers are directly compatible with s3c2440 */
386 s3c_i2c0_setname("s3c2440-i2c");
387 s3c_i2c1_setname("s3c2440-i2c");
388 s3c_i2c2_setname("s3c2440-i2c");
390 s5p_fb_setname(0, "exynos4-fb");
391 s5p_hdmi_setname("exynos4-hdmi");
393 s3c64xx_spi_setname("exynos4210-spi");
396 static void __init
exynos5_map_io(void)
398 iotable_init(exynos5_iodesc
, ARRAY_SIZE(exynos5_iodesc
));
401 static void __init
exynos5440_map_io(void)
403 iotable_init(exynos5440_iodesc0
, ARRAY_SIZE(exynos5440_iodesc0
));
406 void __init
exynos_init_time(void)
408 if (of_have_populated_dt()) {
411 clocksource_of_init();
414 /* todo: remove after migrating legacy E4 platforms to dt */
415 #ifdef CONFIG_ARCH_EXYNOS4
416 exynos4_clk_init(NULL
, !soc_is_exynos4210(), S5P_VA_CMU
, readl(S5P_VA_CHIPID
+ 8) & 1);
417 exynos4_clk_register_fixed_ext(xxti_f
, xusbxti_f
);
419 mct_init(S5P_VA_SYSTIMER
, EXYNOS4_IRQ_MCT_G0
, EXYNOS4_IRQ_MCT_L0
, EXYNOS4_IRQ_MCT_L1
);
423 static unsigned int max_combiner_nr(void)
425 if (soc_is_exynos5250())
426 return EXYNOS5_MAX_COMBINER_NR
;
427 else if (soc_is_exynos4412())
428 return EXYNOS4412_MAX_COMBINER_NR
;
429 else if (soc_is_exynos4212())
430 return EXYNOS4212_MAX_COMBINER_NR
;
432 return EXYNOS4210_MAX_COMBINER_NR
;
436 void __init
exynos4_init_irq(void)
438 unsigned int gic_bank_offset
;
440 gic_bank_offset
= soc_is_exynos4412() ? 0x4000 : 0x8000;
442 if (!of_have_populated_dt())
443 gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST
, S5P_VA_GIC_CPU
, gic_bank_offset
, NULL
);
449 if (!of_have_populated_dt())
450 combiner_init(S5P_VA_COMBINER_BASE
, NULL
,
451 max_combiner_nr(), COMBINER_IRQ(0, 0));
454 * The parameters of s5p_init_irq() are for VIC init.
455 * Theses parameters should be NULL and 0 because EXYNOS4
456 * uses GIC instead of VIC.
458 s5p_init_irq(NULL
, 0);
461 void __init
exynos5_init_irq(void)
467 * The parameters of s5p_init_irq() are for VIC init.
468 * Theses parameters should be NULL and 0 because EXYNOS4
469 * uses GIC instead of VIC.
471 if (!of_machine_is_compatible("samsung,exynos5440"))
472 s5p_init_irq(NULL
, 0);
474 gic_arch_extn
.irq_set_wake
= s3c_irq_wake
;
477 struct bus_type exynos_subsys
= {
478 .name
= "exynos-core",
479 .dev_name
= "exynos-core",
482 static struct device exynos4_dev
= {
483 .bus
= &exynos_subsys
,
486 static int __init
exynos_core_init(void)
488 return subsys_system_register(&exynos_subsys
, NULL
);
490 core_initcall(exynos_core_init
);
492 #ifdef CONFIG_CACHE_L2X0
493 static int __init
exynos4_l2x0_cache_init(void)
497 if (soc_is_exynos5250() || soc_is_exynos5440())
500 ret
= l2x0_of_init(L2_AUX_VAL
, L2_AUX_MASK
);
502 l2x0_regs_phys
= virt_to_phys(&l2x0_saved_regs
);
503 clean_dcache_area(&l2x0_regs_phys
, sizeof(unsigned long));
507 if (!(__raw_readl(S5P_VA_L2CC
+ L2X0_CTRL
) & 0x1)) {
508 l2x0_saved_regs
.phy_base
= EXYNOS4_PA_L2CC
;
509 /* TAG, Data Latency Control: 2 cycles */
510 l2x0_saved_regs
.tag_latency
= 0x110;
512 if (soc_is_exynos4212() || soc_is_exynos4412())
513 l2x0_saved_regs
.data_latency
= 0x120;
515 l2x0_saved_regs
.data_latency
= 0x110;
517 l2x0_saved_regs
.prefetch_ctrl
= 0x30000007;
518 l2x0_saved_regs
.pwr_ctrl
=
519 (L2X0_DYNAMIC_CLK_GATING_EN
| L2X0_STNDBY_MODE_EN
);
521 l2x0_regs_phys
= virt_to_phys(&l2x0_saved_regs
);
523 __raw_writel(l2x0_saved_regs
.tag_latency
,
524 S5P_VA_L2CC
+ L2X0_TAG_LATENCY_CTRL
);
525 __raw_writel(l2x0_saved_regs
.data_latency
,
526 S5P_VA_L2CC
+ L2X0_DATA_LATENCY_CTRL
);
528 /* L2X0 Prefetch Control */
529 __raw_writel(l2x0_saved_regs
.prefetch_ctrl
,
530 S5P_VA_L2CC
+ L2X0_PREFETCH_CTRL
);
532 /* L2X0 Power Control */
533 __raw_writel(l2x0_saved_regs
.pwr_ctrl
,
534 S5P_VA_L2CC
+ L2X0_POWER_CTRL
);
536 clean_dcache_area(&l2x0_regs_phys
, sizeof(unsigned long));
537 clean_dcache_area(&l2x0_saved_regs
, sizeof(struct l2x0_regs
));
540 l2x0_init(S5P_VA_L2CC
, L2_AUX_VAL
, L2_AUX_MASK
);
543 early_initcall(exynos4_l2x0_cache_init
);
546 static int __init
exynos_init(void)
548 printk(KERN_INFO
"EXYNOS: Initializing architecture\n");
550 return device_register(&exynos4_dev
);
553 /* uart registration process */
555 static void __init
exynos4_init_uarts(struct s3c2410_uartcfg
*cfg
, int no
)
557 struct s3c2410_uartcfg
*tcfg
= cfg
;
560 for (ucnt
= 0; ucnt
< no
; ucnt
++, tcfg
++)
561 tcfg
->has_fracval
= 1;
563 s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources
, cfg
, no
);
567 #ifdef CONFIG_EXYNOS_ATAGS
568 static void __iomem
*exynos_eint_base
;
570 static DEFINE_SPINLOCK(eint_lock
);
572 static unsigned int eint0_15_data
[16];
574 static inline int exynos4_irq_to_gpio(unsigned int irq
)
576 if (irq
< IRQ_EINT(0))
581 return EXYNOS4_GPX0(irq
);
585 return EXYNOS4_GPX1(irq
);
589 return EXYNOS4_GPX2(irq
);
593 return EXYNOS4_GPX3(irq
);
598 static inline int exynos5_irq_to_gpio(unsigned int irq
)
600 if (irq
< IRQ_EINT(0))
605 return EXYNOS5_GPX0(irq
);
609 return EXYNOS5_GPX1(irq
);
613 return EXYNOS5_GPX2(irq
);
617 return EXYNOS5_GPX3(irq
);
622 static unsigned int exynos4_eint0_15_src_int
[16] = {
641 static unsigned int exynos5_eint0_15_src_int
[16] = {
659 static inline void exynos_irq_eint_mask(struct irq_data
*data
)
663 spin_lock(&eint_lock
);
664 mask
= __raw_readl(EINT_MASK(exynos_eint_base
, data
->irq
));
665 mask
|= EINT_OFFSET_BIT(data
->irq
);
666 __raw_writel(mask
, EINT_MASK(exynos_eint_base
, data
->irq
));
667 spin_unlock(&eint_lock
);
670 static void exynos_irq_eint_unmask(struct irq_data
*data
)
674 spin_lock(&eint_lock
);
675 mask
= __raw_readl(EINT_MASK(exynos_eint_base
, data
->irq
));
676 mask
&= ~(EINT_OFFSET_BIT(data
->irq
));
677 __raw_writel(mask
, EINT_MASK(exynos_eint_base
, data
->irq
));
678 spin_unlock(&eint_lock
);
681 static inline void exynos_irq_eint_ack(struct irq_data
*data
)
683 __raw_writel(EINT_OFFSET_BIT(data
->irq
),
684 EINT_PEND(exynos_eint_base
, data
->irq
));
687 static void exynos_irq_eint_maskack(struct irq_data
*data
)
689 exynos_irq_eint_mask(data
);
690 exynos_irq_eint_ack(data
);
693 static int exynos_irq_eint_set_type(struct irq_data
*data
, unsigned int type
)
695 int offs
= EINT_OFFSET(data
->irq
);
701 case IRQ_TYPE_EDGE_RISING
:
702 newvalue
= S5P_IRQ_TYPE_EDGE_RISING
;
705 case IRQ_TYPE_EDGE_FALLING
:
706 newvalue
= S5P_IRQ_TYPE_EDGE_FALLING
;
709 case IRQ_TYPE_EDGE_BOTH
:
710 newvalue
= S5P_IRQ_TYPE_EDGE_BOTH
;
713 case IRQ_TYPE_LEVEL_LOW
:
714 newvalue
= S5P_IRQ_TYPE_LEVEL_LOW
;
717 case IRQ_TYPE_LEVEL_HIGH
:
718 newvalue
= S5P_IRQ_TYPE_LEVEL_HIGH
;
722 printk(KERN_ERR
"No such irq type %d", type
);
726 shift
= (offs
& 0x7) * 4;
729 spin_lock(&eint_lock
);
730 ctrl
= __raw_readl(EINT_CON(exynos_eint_base
, data
->irq
));
732 ctrl
|= newvalue
<< shift
;
733 __raw_writel(ctrl
, EINT_CON(exynos_eint_base
, data
->irq
));
734 spin_unlock(&eint_lock
);
736 if (soc_is_exynos5250())
737 s3c_gpio_cfgpin(exynos5_irq_to_gpio(data
->irq
), S3C_GPIO_SFN(0xf));
739 s3c_gpio_cfgpin(exynos4_irq_to_gpio(data
->irq
), S3C_GPIO_SFN(0xf));
744 static struct irq_chip exynos_irq_eint
= {
745 .name
= "exynos-eint",
746 .irq_mask
= exynos_irq_eint_mask
,
747 .irq_unmask
= exynos_irq_eint_unmask
,
748 .irq_mask_ack
= exynos_irq_eint_maskack
,
749 .irq_ack
= exynos_irq_eint_ack
,
750 .irq_set_type
= exynos_irq_eint_set_type
,
752 .irq_set_wake
= s3c_irqext_wake
,
757 * exynos4_irq_demux_eint
759 * This function demuxes the IRQ from from EINTs 16 to 31.
760 * It is designed to be inlined into the specific handler
761 * s5p_irq_demux_eintX_Y.
763 * Each EINT pend/mask registers handle eight of them.
765 static inline void exynos_irq_demux_eint(unsigned int start
)
769 u32 status
= __raw_readl(EINT_PEND(exynos_eint_base
, start
));
770 u32 mask
= __raw_readl(EINT_MASK(exynos_eint_base
, start
));
776 irq
= fls(status
) - 1;
777 generic_handle_irq(irq
+ start
);
778 status
&= ~(1 << irq
);
782 static void exynos_irq_demux_eint16_31(unsigned int irq
, struct irq_desc
*desc
)
784 struct irq_chip
*chip
= irq_get_chip(irq
);
785 chained_irq_enter(chip
, desc
);
786 exynos_irq_demux_eint(IRQ_EINT(16));
787 exynos_irq_demux_eint(IRQ_EINT(24));
788 chained_irq_exit(chip
, desc
);
791 static void exynos_irq_eint0_15(unsigned int irq
, struct irq_desc
*desc
)
793 u32
*irq_data
= irq_get_handler_data(irq
);
794 struct irq_chip
*chip
= irq_get_chip(irq
);
796 chained_irq_enter(chip
, desc
);
797 generic_handle_irq(*irq_data
);
798 chained_irq_exit(chip
, desc
);
801 static int __init
exynos_init_irq_eint(void)
805 #ifdef CONFIG_PINCTRL_SAMSUNG
807 * The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf
808 * functionality along with support for external gpio and wakeup
809 * interrupts. If the samsung pinctrl driver is enabled and includes
810 * the wakeup interrupt support, then the setting up external wakeup
811 * interrupts here can be skipped. This check here is temporary to
812 * allow exynos4 platforms that do not use Samsung pinctrl driver to
813 * co-exist with platforms that do. When all of the Samsung Exynos4
814 * platforms switch over to using the pinctrl driver, the wakeup
815 * interrupt support code here can be completely removed.
817 static const struct of_device_id exynos_pinctrl_ids
[] = {
818 { .compatible
= "samsung,exynos4210-pinctrl", },
819 { .compatible
= "samsung,exynos4x12-pinctrl", },
820 { .compatible
= "samsung,exynos5250-pinctrl", },
822 struct device_node
*pctrl_np
, *wkup_np
;
823 const char *wkup_compat
= "samsung,exynos4210-wakeup-eint";
825 for_each_matching_node(pctrl_np
, exynos_pinctrl_ids
) {
826 if (of_device_is_available(pctrl_np
)) {
827 wkup_np
= of_find_compatible_node(pctrl_np
, NULL
,
834 if (soc_is_exynos5440())
837 if (soc_is_exynos5250())
838 exynos_eint_base
= ioremap(EXYNOS5_PA_GPIO1
, SZ_4K
);
840 exynos_eint_base
= ioremap(EXYNOS4_PA_GPIO2
, SZ_4K
);
842 if (exynos_eint_base
== NULL
) {
843 pr_err("unable to ioremap for EINT base address\n");
847 for (irq
= 0 ; irq
<= 31 ; irq
++) {
848 irq_set_chip_and_handler(IRQ_EINT(irq
), &exynos_irq_eint
,
850 set_irq_flags(IRQ_EINT(irq
), IRQF_VALID
);
853 irq_set_chained_handler(EXYNOS_IRQ_EINT16_31
, exynos_irq_demux_eint16_31
);
855 for (irq
= 0 ; irq
<= 15 ; irq
++) {
856 eint0_15_data
[irq
] = IRQ_EINT(irq
);
858 if (soc_is_exynos5250()) {
859 irq_set_handler_data(exynos5_eint0_15_src_int
[irq
],
860 &eint0_15_data
[irq
]);
861 irq_set_chained_handler(exynos5_eint0_15_src_int
[irq
],
862 exynos_irq_eint0_15
);
864 irq_set_handler_data(exynos4_eint0_15_src_int
[irq
],
865 &eint0_15_data
[irq
]);
866 irq_set_chained_handler(exynos4_eint0_15_src_int
[irq
],
867 exynos_irq_eint0_15
);
873 arch_initcall(exynos_init_irq_eint
);
876 static struct resource exynos4_pmu_resource
[] = {
877 DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU
),
878 DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU1
),
879 #if defined(CONFIG_SOC_EXYNOS4412)
880 DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU2
),
881 DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU3
),
885 static struct platform_device exynos4_device_pmu
= {
887 .num_resources
= ARRAY_SIZE(exynos4_pmu_resource
),
888 .resource
= exynos4_pmu_resource
,
891 static int __init
exynos_armpmu_init(void)
893 if (!of_have_populated_dt()) {
894 if (soc_is_exynos4210() || soc_is_exynos4212())
895 exynos4_device_pmu
.num_resources
= 2;
896 platform_device_register(&exynos4_device_pmu
);
901 arch_initcall(exynos_armpmu_init
);