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/irqchip/arm-gic.h>
30 #include <asm/proc-fns.h>
31 #include <asm/exception.h>
32 #include <asm/hardware/cache-l2x0.h>
33 #include <asm/mach/map.h>
34 #include <asm/mach/irq.h>
35 #include <asm/cacheflush.h>
37 #include <mach/regs-irq.h>
38 #include <mach/regs-pmu.h>
39 #include <mach/regs-gpio.h>
42 #include <plat/clock.h>
43 #include <plat/devs.h>
45 #include <plat/sdhci.h>
46 #include <plat/gpio-cfg.h>
47 #include <plat/adc-core.h>
48 #include <plat/fb-core.h>
49 #include <plat/fimc-core.h>
50 #include <plat/iic-core.h>
51 #include <plat/tv-core.h>
52 #include <plat/spi-core.h>
53 #include <plat/regs-serial.h>
56 #define L2_AUX_VAL 0x7C470001
57 #define L2_AUX_MASK 0xC200ffff
59 static const char name_exynos4210
[] = "EXYNOS4210";
60 static const char name_exynos4212
[] = "EXYNOS4212";
61 static const char name_exynos4412
[] = "EXYNOS4412";
62 static const char name_exynos5250
[] = "EXYNOS5250";
63 static const char name_exynos5440
[] = "EXYNOS5440";
65 static void exynos4_map_io(void);
66 static void exynos5_map_io(void);
67 static void exynos5440_map_io(void);
68 static void exynos4_init_clocks(int xtal
);
69 static void exynos5_init_clocks(int xtal
);
70 static void exynos4_init_uarts(struct s3c2410_uartcfg
*cfg
, int no
);
71 static int exynos_init(void);
73 static struct cpu_table cpu_ids
[] __initdata
= {
75 .idcode
= EXYNOS4210_CPU_ID
,
76 .idmask
= EXYNOS4_CPU_MASK
,
77 .map_io
= exynos4_map_io
,
78 .init_clocks
= exynos4_init_clocks
,
79 .init_uarts
= exynos4_init_uarts
,
81 .name
= name_exynos4210
,
83 .idcode
= EXYNOS4212_CPU_ID
,
84 .idmask
= EXYNOS4_CPU_MASK
,
85 .map_io
= exynos4_map_io
,
86 .init_clocks
= exynos4_init_clocks
,
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_clocks
= exynos4_init_clocks
,
95 .init_uarts
= exynos4_init_uarts
,
97 .name
= name_exynos4412
,
99 .idcode
= EXYNOS5250_SOC_ID
,
100 .idmask
= EXYNOS5_SOC_MASK
,
101 .map_io
= exynos5_map_io
,
102 .init_clocks
= exynos5_init_clocks
,
104 .name
= name_exynos5250
,
106 .idcode
= EXYNOS5440_SOC_ID
,
107 .idmask
= EXYNOS5_SOC_MASK
,
108 .map_io
= exynos5440_map_io
,
110 .name
= name_exynos5440
,
114 /* Initial IO mappings */
116 static struct map_desc exynos_iodesc
[] __initdata
= {
118 .virtual = (unsigned long)S5P_VA_CHIPID
,
119 .pfn
= __phys_to_pfn(EXYNOS_PA_CHIPID
),
125 #ifdef CONFIG_ARCH_EXYNOS5
126 static struct map_desc exynos5440_iodesc
[] __initdata
= {
128 .virtual = (unsigned long)S5P_VA_CHIPID
,
129 .pfn
= __phys_to_pfn(EXYNOS5440_PA_CHIPID
),
136 static struct map_desc exynos4_iodesc
[] __initdata
= {
138 .virtual = (unsigned long)S3C_VA_SYS
,
139 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSCON
),
143 .virtual = (unsigned long)S3C_VA_TIMER
,
144 .pfn
= __phys_to_pfn(EXYNOS4_PA_TIMER
),
148 .virtual = (unsigned long)S3C_VA_WATCHDOG
,
149 .pfn
= __phys_to_pfn(EXYNOS4_PA_WATCHDOG
),
153 .virtual = (unsigned long)S5P_VA_SROMC
,
154 .pfn
= __phys_to_pfn(EXYNOS4_PA_SROMC
),
158 .virtual = (unsigned long)S5P_VA_SYSTIMER
,
159 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSTIMER
),
163 .virtual = (unsigned long)S5P_VA_PMU
,
164 .pfn
= __phys_to_pfn(EXYNOS4_PA_PMU
),
168 .virtual = (unsigned long)S5P_VA_COMBINER_BASE
,
169 .pfn
= __phys_to_pfn(EXYNOS4_PA_COMBINER
),
173 .virtual = (unsigned long)S5P_VA_GIC_CPU
,
174 .pfn
= __phys_to_pfn(EXYNOS4_PA_GIC_CPU
),
178 .virtual = (unsigned long)S5P_VA_GIC_DIST
,
179 .pfn
= __phys_to_pfn(EXYNOS4_PA_GIC_DIST
),
183 .virtual = (unsigned long)S3C_VA_UART
,
184 .pfn
= __phys_to_pfn(EXYNOS4_PA_UART
),
188 .virtual = (unsigned long)S5P_VA_CMU
,
189 .pfn
= __phys_to_pfn(EXYNOS4_PA_CMU
),
193 .virtual = (unsigned long)S5P_VA_COREPERI_BASE
,
194 .pfn
= __phys_to_pfn(EXYNOS4_PA_COREPERI
),
198 .virtual = (unsigned long)S5P_VA_L2CC
,
199 .pfn
= __phys_to_pfn(EXYNOS4_PA_L2CC
),
203 .virtual = (unsigned long)S5P_VA_DMC0
,
204 .pfn
= __phys_to_pfn(EXYNOS4_PA_DMC0
),
208 .virtual = (unsigned long)S5P_VA_DMC1
,
209 .pfn
= __phys_to_pfn(EXYNOS4_PA_DMC1
),
213 .virtual = (unsigned long)S3C_VA_USB_HSPHY
,
214 .pfn
= __phys_to_pfn(EXYNOS4_PA_HSPHY
),
220 static struct map_desc exynos4_iodesc0
[] __initdata
= {
222 .virtual = (unsigned long)S5P_VA_SYSRAM
,
223 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSRAM0
),
229 static struct map_desc exynos4_iodesc1
[] __initdata
= {
231 .virtual = (unsigned long)S5P_VA_SYSRAM
,
232 .pfn
= __phys_to_pfn(EXYNOS4_PA_SYSRAM1
),
238 static struct map_desc exynos5_iodesc
[] __initdata
= {
240 .virtual = (unsigned long)S3C_VA_SYS
,
241 .pfn
= __phys_to_pfn(EXYNOS5_PA_SYSCON
),
245 .virtual = (unsigned long)S3C_VA_TIMER
,
246 .pfn
= __phys_to_pfn(EXYNOS5_PA_TIMER
),
250 .virtual = (unsigned long)S3C_VA_WATCHDOG
,
251 .pfn
= __phys_to_pfn(EXYNOS5_PA_WATCHDOG
),
255 .virtual = (unsigned long)S5P_VA_SROMC
,
256 .pfn
= __phys_to_pfn(EXYNOS5_PA_SROMC
),
260 .virtual = (unsigned long)S5P_VA_SYSTIMER
,
261 .pfn
= __phys_to_pfn(EXYNOS5_PA_SYSTIMER
),
265 .virtual = (unsigned long)S5P_VA_SYSRAM
,
266 .pfn
= __phys_to_pfn(EXYNOS5_PA_SYSRAM
),
270 .virtual = (unsigned long)S5P_VA_CMU
,
271 .pfn
= __phys_to_pfn(EXYNOS5_PA_CMU
),
272 .length
= 144 * SZ_1K
,
275 .virtual = (unsigned long)S5P_VA_PMU
,
276 .pfn
= __phys_to_pfn(EXYNOS5_PA_PMU
),
280 .virtual = (unsigned long)S3C_VA_UART
,
281 .pfn
= __phys_to_pfn(EXYNOS5_PA_UART
),
287 static struct map_desc exynos5440_iodesc0
[] __initdata
= {
289 .virtual = (unsigned long)S3C_VA_UART
,
290 .pfn
= __phys_to_pfn(EXYNOS5440_PA_UART0
),
296 void exynos4_restart(char mode
, const char *cmd
)
298 __raw_writel(0x1, S5P_SWRESET
);
301 void exynos5_restart(char mode
, const char *cmd
)
303 struct device_node
*np
;
307 if (of_machine_is_compatible("samsung,exynos5250")) {
309 addr
= EXYNOS_SWRESET
;
310 } else if (of_machine_is_compatible("samsung,exynos5440")) {
311 np
= of_find_compatible_node(NULL
, NULL
, "samsung,exynos5440-clock");
312 addr
= of_iomap(np
, 0) + 0xcc;
313 val
= (0xfff << 20) | (0x1 << 16);
315 pr_err("%s: cannot support non-DT\n", __func__
);
319 __raw_writel(val
, addr
);
322 void __init
exynos_init_late(void)
324 if (of_machine_is_compatible("samsung,exynos5440"))
325 /* to be supported later */
328 exynos_pm_late_initcall();
334 * register the standard cpu IO areas
337 void __init
exynos_init_io(struct map_desc
*mach_desc
, int size
)
339 struct map_desc
*iodesc
= exynos_iodesc
;
340 int iodesc_sz
= ARRAY_SIZE(exynos_iodesc
);
341 #if defined(CONFIG_OF) && defined(CONFIG_ARCH_EXYNOS5)
342 unsigned long root
= of_get_flat_dt_root();
344 /* initialize the io descriptors we need for initialization */
345 if (of_flat_dt_is_compatible(root
, "samsung,exynos5440")) {
346 iodesc
= exynos5440_iodesc
;
347 iodesc_sz
= ARRAY_SIZE(exynos5440_iodesc
);
351 iotable_init(iodesc
, iodesc_sz
);
354 iotable_init(mach_desc
, size
);
356 /* detect cpu id and rev. */
357 s5p_init_cpu(S5P_VA_CHIPID
);
359 s3c_init_cpu(samsung_cpu_id
, cpu_ids
, ARRAY_SIZE(cpu_ids
));
362 static void __init
exynos4_map_io(void)
364 iotable_init(exynos4_iodesc
, ARRAY_SIZE(exynos4_iodesc
));
366 if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0
)
367 iotable_init(exynos4_iodesc0
, ARRAY_SIZE(exynos4_iodesc0
));
369 iotable_init(exynos4_iodesc1
, ARRAY_SIZE(exynos4_iodesc1
));
371 /* initialize device information early */
372 exynos4_default_sdhci0();
373 exynos4_default_sdhci1();
374 exynos4_default_sdhci2();
375 exynos4_default_sdhci3();
377 s3c_adc_setname("samsung-adc-v3");
379 s3c_fimc_setname(0, "exynos4-fimc");
380 s3c_fimc_setname(1, "exynos4-fimc");
381 s3c_fimc_setname(2, "exynos4-fimc");
382 s3c_fimc_setname(3, "exynos4-fimc");
384 s3c_sdhci_setname(0, "exynos4-sdhci");
385 s3c_sdhci_setname(1, "exynos4-sdhci");
386 s3c_sdhci_setname(2, "exynos4-sdhci");
387 s3c_sdhci_setname(3, "exynos4-sdhci");
389 /* The I2C bus controllers are directly compatible with s3c2440 */
390 s3c_i2c0_setname("s3c2440-i2c");
391 s3c_i2c1_setname("s3c2440-i2c");
392 s3c_i2c2_setname("s3c2440-i2c");
394 s5p_fb_setname(0, "exynos4-fb");
395 s5p_hdmi_setname("exynos4-hdmi");
397 s3c64xx_spi_setname("exynos4210-spi");
400 static void __init
exynos5_map_io(void)
402 iotable_init(exynos5_iodesc
, ARRAY_SIZE(exynos5_iodesc
));
405 static void __init
exynos4_init_clocks(int xtal
)
407 printk(KERN_DEBUG
"%s: initializing clocks\n", __func__
);
409 s3c24xx_register_baseclocks(xtal
);
410 s5p_register_clocks(xtal
);
412 if (soc_is_exynos4210())
413 exynos4210_register_clocks();
414 else if (soc_is_exynos4212() || soc_is_exynos4412())
415 exynos4212_register_clocks();
417 exynos4_register_clocks();
418 exynos4_setup_clocks();
421 static void __init
exynos5440_map_io(void)
423 iotable_init(exynos5440_iodesc0
, ARRAY_SIZE(exynos5440_iodesc0
));
426 static void __init
exynos5_init_clocks(int xtal
)
428 printk(KERN_DEBUG
"%s: initializing clocks\n", __func__
);
430 /* EXYNOS5440 can support only common clock framework */
432 if (soc_is_exynos5440())
435 #ifdef CONFIG_SOC_EXYNOS5250
436 s3c24xx_register_baseclocks(xtal
);
437 s5p_register_clocks(xtal
);
439 exynos5_register_clocks();
440 exynos5_setup_clocks();
444 void __init
exynos4_init_irq(void)
446 unsigned int gic_bank_offset
;
448 gic_bank_offset
= soc_is_exynos4412() ? 0x4000 : 0x8000;
450 if (!of_have_populated_dt())
451 gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST
, S5P_VA_GIC_CPU
, gic_bank_offset
, NULL
);
457 if (!of_have_populated_dt())
458 combiner_init(S5P_VA_COMBINER_BASE
, NULL
);
461 * The parameters of s5p_init_irq() are for VIC init.
462 * Theses parameters should be NULL and 0 because EXYNOS4
463 * uses GIC instead of VIC.
465 s5p_init_irq(NULL
, 0);
468 void __init
exynos5_init_irq(void)
474 * The parameters of s5p_init_irq() are for VIC init.
475 * Theses parameters should be NULL and 0 because EXYNOS4
476 * uses GIC instead of VIC.
478 if (!of_machine_is_compatible("samsung,exynos5440"))
479 s5p_init_irq(NULL
, 0);
481 gic_arch_extn
.irq_set_wake
= s3c_irq_wake
;
484 struct bus_type exynos_subsys
= {
485 .name
= "exynos-core",
486 .dev_name
= "exynos-core",
489 static struct device exynos4_dev
= {
490 .bus
= &exynos_subsys
,
493 static int __init
exynos_core_init(void)
495 return subsys_system_register(&exynos_subsys
, NULL
);
497 core_initcall(exynos_core_init
);
499 #ifdef CONFIG_CACHE_L2X0
500 static int __init
exynos4_l2x0_cache_init(void)
504 if (soc_is_exynos5250() || soc_is_exynos5440())
507 ret
= l2x0_of_init(L2_AUX_VAL
, L2_AUX_MASK
);
509 l2x0_regs_phys
= virt_to_phys(&l2x0_saved_regs
);
510 clean_dcache_area(&l2x0_regs_phys
, sizeof(unsigned long));
514 if (!(__raw_readl(S5P_VA_L2CC
+ L2X0_CTRL
) & 0x1)) {
515 l2x0_saved_regs
.phy_base
= EXYNOS4_PA_L2CC
;
516 /* TAG, Data Latency Control: 2 cycles */
517 l2x0_saved_regs
.tag_latency
= 0x110;
519 if (soc_is_exynos4212() || soc_is_exynos4412())
520 l2x0_saved_regs
.data_latency
= 0x120;
522 l2x0_saved_regs
.data_latency
= 0x110;
524 l2x0_saved_regs
.prefetch_ctrl
= 0x30000007;
525 l2x0_saved_regs
.pwr_ctrl
=
526 (L2X0_DYNAMIC_CLK_GATING_EN
| L2X0_STNDBY_MODE_EN
);
528 l2x0_regs_phys
= virt_to_phys(&l2x0_saved_regs
);
530 __raw_writel(l2x0_saved_regs
.tag_latency
,
531 S5P_VA_L2CC
+ L2X0_TAG_LATENCY_CTRL
);
532 __raw_writel(l2x0_saved_regs
.data_latency
,
533 S5P_VA_L2CC
+ L2X0_DATA_LATENCY_CTRL
);
535 /* L2X0 Prefetch Control */
536 __raw_writel(l2x0_saved_regs
.prefetch_ctrl
,
537 S5P_VA_L2CC
+ L2X0_PREFETCH_CTRL
);
539 /* L2X0 Power Control */
540 __raw_writel(l2x0_saved_regs
.pwr_ctrl
,
541 S5P_VA_L2CC
+ L2X0_POWER_CTRL
);
543 clean_dcache_area(&l2x0_regs_phys
, sizeof(unsigned long));
544 clean_dcache_area(&l2x0_saved_regs
, sizeof(struct l2x0_regs
));
547 l2x0_init(S5P_VA_L2CC
, L2_AUX_VAL
, L2_AUX_MASK
);
550 early_initcall(exynos4_l2x0_cache_init
);
553 static int __init
exynos_init(void)
555 printk(KERN_INFO
"EXYNOS: Initializing architecture\n");
557 return device_register(&exynos4_dev
);
560 /* uart registration process */
562 static void __init
exynos4_init_uarts(struct s3c2410_uartcfg
*cfg
, int no
)
564 struct s3c2410_uartcfg
*tcfg
= cfg
;
567 for (ucnt
= 0; ucnt
< no
; ucnt
++, tcfg
++)
568 tcfg
->has_fracval
= 1;
570 s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources
, cfg
, no
);
573 static void __iomem
*exynos_eint_base
;
575 static DEFINE_SPINLOCK(eint_lock
);
577 static unsigned int eint0_15_data
[16];
579 static inline int exynos4_irq_to_gpio(unsigned int irq
)
581 if (irq
< IRQ_EINT(0))
586 return EXYNOS4_GPX0(irq
);
590 return EXYNOS4_GPX1(irq
);
594 return EXYNOS4_GPX2(irq
);
598 return EXYNOS4_GPX3(irq
);
603 static inline int exynos5_irq_to_gpio(unsigned int irq
)
605 if (irq
< IRQ_EINT(0))
610 return EXYNOS5_GPX0(irq
);
614 return EXYNOS5_GPX1(irq
);
618 return EXYNOS5_GPX2(irq
);
622 return EXYNOS5_GPX3(irq
);
627 static unsigned int exynos4_eint0_15_src_int
[16] = {
646 static unsigned int exynos5_eint0_15_src_int
[16] = {
664 static inline void exynos_irq_eint_mask(struct irq_data
*data
)
668 spin_lock(&eint_lock
);
669 mask
= __raw_readl(EINT_MASK(exynos_eint_base
, data
->irq
));
670 mask
|= EINT_OFFSET_BIT(data
->irq
);
671 __raw_writel(mask
, EINT_MASK(exynos_eint_base
, data
->irq
));
672 spin_unlock(&eint_lock
);
675 static void exynos_irq_eint_unmask(struct irq_data
*data
)
679 spin_lock(&eint_lock
);
680 mask
= __raw_readl(EINT_MASK(exynos_eint_base
, data
->irq
));
681 mask
&= ~(EINT_OFFSET_BIT(data
->irq
));
682 __raw_writel(mask
, EINT_MASK(exynos_eint_base
, data
->irq
));
683 spin_unlock(&eint_lock
);
686 static inline void exynos_irq_eint_ack(struct irq_data
*data
)
688 __raw_writel(EINT_OFFSET_BIT(data
->irq
),
689 EINT_PEND(exynos_eint_base
, data
->irq
));
692 static void exynos_irq_eint_maskack(struct irq_data
*data
)
694 exynos_irq_eint_mask(data
);
695 exynos_irq_eint_ack(data
);
698 static int exynos_irq_eint_set_type(struct irq_data
*data
, unsigned int type
)
700 int offs
= EINT_OFFSET(data
->irq
);
706 case IRQ_TYPE_EDGE_RISING
:
707 newvalue
= S5P_IRQ_TYPE_EDGE_RISING
;
710 case IRQ_TYPE_EDGE_FALLING
:
711 newvalue
= S5P_IRQ_TYPE_EDGE_FALLING
;
714 case IRQ_TYPE_EDGE_BOTH
:
715 newvalue
= S5P_IRQ_TYPE_EDGE_BOTH
;
718 case IRQ_TYPE_LEVEL_LOW
:
719 newvalue
= S5P_IRQ_TYPE_LEVEL_LOW
;
722 case IRQ_TYPE_LEVEL_HIGH
:
723 newvalue
= S5P_IRQ_TYPE_LEVEL_HIGH
;
727 printk(KERN_ERR
"No such irq type %d", type
);
731 shift
= (offs
& 0x7) * 4;
734 spin_lock(&eint_lock
);
735 ctrl
= __raw_readl(EINT_CON(exynos_eint_base
, data
->irq
));
737 ctrl
|= newvalue
<< shift
;
738 __raw_writel(ctrl
, EINT_CON(exynos_eint_base
, data
->irq
));
739 spin_unlock(&eint_lock
);
741 if (soc_is_exynos5250())
742 s3c_gpio_cfgpin(exynos5_irq_to_gpio(data
->irq
), S3C_GPIO_SFN(0xf));
744 s3c_gpio_cfgpin(exynos4_irq_to_gpio(data
->irq
), S3C_GPIO_SFN(0xf));
749 static struct irq_chip exynos_irq_eint
= {
750 .name
= "exynos-eint",
751 .irq_mask
= exynos_irq_eint_mask
,
752 .irq_unmask
= exynos_irq_eint_unmask
,
753 .irq_mask_ack
= exynos_irq_eint_maskack
,
754 .irq_ack
= exynos_irq_eint_ack
,
755 .irq_set_type
= exynos_irq_eint_set_type
,
757 .irq_set_wake
= s3c_irqext_wake
,
762 * exynos4_irq_demux_eint
764 * This function demuxes the IRQ from from EINTs 16 to 31.
765 * It is designed to be inlined into the specific handler
766 * s5p_irq_demux_eintX_Y.
768 * Each EINT pend/mask registers handle eight of them.
770 static inline void exynos_irq_demux_eint(unsigned int start
)
774 u32 status
= __raw_readl(EINT_PEND(exynos_eint_base
, start
));
775 u32 mask
= __raw_readl(EINT_MASK(exynos_eint_base
, start
));
781 irq
= fls(status
) - 1;
782 generic_handle_irq(irq
+ start
);
783 status
&= ~(1 << irq
);
787 static void exynos_irq_demux_eint16_31(unsigned int irq
, struct irq_desc
*desc
)
789 struct irq_chip
*chip
= irq_get_chip(irq
);
790 chained_irq_enter(chip
, desc
);
791 exynos_irq_demux_eint(IRQ_EINT(16));
792 exynos_irq_demux_eint(IRQ_EINT(24));
793 chained_irq_exit(chip
, desc
);
796 static void exynos_irq_eint0_15(unsigned int irq
, struct irq_desc
*desc
)
798 u32
*irq_data
= irq_get_handler_data(irq
);
799 struct irq_chip
*chip
= irq_get_chip(irq
);
801 chained_irq_enter(chip
, desc
);
802 generic_handle_irq(*irq_data
);
803 chained_irq_exit(chip
, desc
);
806 static int __init
exynos_init_irq_eint(void)
810 #ifdef CONFIG_PINCTRL_SAMSUNG
812 * The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf
813 * functionality along with support for external gpio and wakeup
814 * interrupts. If the samsung pinctrl driver is enabled and includes
815 * the wakeup interrupt support, then the setting up external wakeup
816 * interrupts here can be skipped. This check here is temporary to
817 * allow exynos4 platforms that do not use Samsung pinctrl driver to
818 * co-exist with platforms that do. When all of the Samsung Exynos4
819 * platforms switch over to using the pinctrl driver, the wakeup
820 * interrupt support code here can be completely removed.
822 static const struct of_device_id exynos_pinctrl_ids
[] = {
823 { .compatible
= "samsung,exynos4210-pinctrl", },
824 { .compatible
= "samsung,exynos4x12-pinctrl", },
826 struct device_node
*pctrl_np
, *wkup_np
;
827 const char *wkup_compat
= "samsung,exynos4210-wakeup-eint";
829 for_each_matching_node(pctrl_np
, exynos_pinctrl_ids
) {
830 if (of_device_is_available(pctrl_np
)) {
831 wkup_np
= of_find_compatible_node(pctrl_np
, NULL
,
838 if (soc_is_exynos5440())
841 if (soc_is_exynos5250())
842 exynos_eint_base
= ioremap(EXYNOS5_PA_GPIO1
, SZ_4K
);
844 exynos_eint_base
= ioremap(EXYNOS4_PA_GPIO2
, SZ_4K
);
846 if (exynos_eint_base
== NULL
) {
847 pr_err("unable to ioremap for EINT base address\n");
851 for (irq
= 0 ; irq
<= 31 ; irq
++) {
852 irq_set_chip_and_handler(IRQ_EINT(irq
), &exynos_irq_eint
,
854 set_irq_flags(IRQ_EINT(irq
), IRQF_VALID
);
857 irq_set_chained_handler(EXYNOS_IRQ_EINT16_31
, exynos_irq_demux_eint16_31
);
859 for (irq
= 0 ; irq
<= 15 ; irq
++) {
860 eint0_15_data
[irq
] = IRQ_EINT(irq
);
862 if (soc_is_exynos5250()) {
863 irq_set_handler_data(exynos5_eint0_15_src_int
[irq
],
864 &eint0_15_data
[irq
]);
865 irq_set_chained_handler(exynos5_eint0_15_src_int
[irq
],
866 exynos_irq_eint0_15
);
868 irq_set_handler_data(exynos4_eint0_15_src_int
[irq
],
869 &eint0_15_data
[irq
]);
870 irq_set_chained_handler(exynos4_eint0_15_src_int
[irq
],
871 exynos_irq_eint0_15
);
877 arch_initcall(exynos_init_irq_eint
);