2 * linux/arch/arm/plat-omap/gpio.c
4 * Support functions for OMAP GPIO
6 * Copyright (C) 2003-2005 Nokia Corporation
7 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
9 * Copyright (C) 2009 Texas Instruments
10 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
17 #include <linux/init.h>
18 #include <linux/module.h>
19 #include <linux/interrupt.h>
20 #include <linux/sysdev.h>
21 #include <linux/err.h>
22 #include <linux/clk.h>
25 #include <mach/hardware.h>
27 #include <mach/irqs.h>
28 #include <mach/gpio.h>
29 #include <asm/mach/irq.h>
30 #include <plat/powerdomain.h>
33 * OMAP1510 GPIO registers
35 #define OMAP1510_GPIO_BASE 0xfffce000
36 #define OMAP1510_GPIO_DATA_INPUT 0x00
37 #define OMAP1510_GPIO_DATA_OUTPUT 0x04
38 #define OMAP1510_GPIO_DIR_CONTROL 0x08
39 #define OMAP1510_GPIO_INT_CONTROL 0x0c
40 #define OMAP1510_GPIO_INT_MASK 0x10
41 #define OMAP1510_GPIO_INT_STATUS 0x14
42 #define OMAP1510_GPIO_PIN_CONTROL 0x18
44 #define OMAP1510_IH_GPIO_BASE 64
47 * OMAP1610 specific GPIO registers
49 #define OMAP1610_GPIO1_BASE 0xfffbe400
50 #define OMAP1610_GPIO2_BASE 0xfffbec00
51 #define OMAP1610_GPIO3_BASE 0xfffbb400
52 #define OMAP1610_GPIO4_BASE 0xfffbbc00
53 #define OMAP1610_GPIO_REVISION 0x0000
54 #define OMAP1610_GPIO_SYSCONFIG 0x0010
55 #define OMAP1610_GPIO_SYSSTATUS 0x0014
56 #define OMAP1610_GPIO_IRQSTATUS1 0x0018
57 #define OMAP1610_GPIO_IRQENABLE1 0x001c
58 #define OMAP1610_GPIO_WAKEUPENABLE 0x0028
59 #define OMAP1610_GPIO_DATAIN 0x002c
60 #define OMAP1610_GPIO_DATAOUT 0x0030
61 #define OMAP1610_GPIO_DIRECTION 0x0034
62 #define OMAP1610_GPIO_EDGE_CTRL1 0x0038
63 #define OMAP1610_GPIO_EDGE_CTRL2 0x003c
64 #define OMAP1610_GPIO_CLEAR_IRQENABLE1 0x009c
65 #define OMAP1610_GPIO_CLEAR_WAKEUPENA 0x00a8
66 #define OMAP1610_GPIO_CLEAR_DATAOUT 0x00b0
67 #define OMAP1610_GPIO_SET_IRQENABLE1 0x00dc
68 #define OMAP1610_GPIO_SET_WAKEUPENA 0x00e8
69 #define OMAP1610_GPIO_SET_DATAOUT 0x00f0
72 * OMAP7XX specific GPIO registers
74 #define OMAP7XX_GPIO1_BASE 0xfffbc000
75 #define OMAP7XX_GPIO2_BASE 0xfffbc800
76 #define OMAP7XX_GPIO3_BASE 0xfffbd000
77 #define OMAP7XX_GPIO4_BASE 0xfffbd800
78 #define OMAP7XX_GPIO5_BASE 0xfffbe000
79 #define OMAP7XX_GPIO6_BASE 0xfffbe800
80 #define OMAP7XX_GPIO_DATA_INPUT 0x00
81 #define OMAP7XX_GPIO_DATA_OUTPUT 0x04
82 #define OMAP7XX_GPIO_DIR_CONTROL 0x08
83 #define OMAP7XX_GPIO_INT_CONTROL 0x0c
84 #define OMAP7XX_GPIO_INT_MASK 0x10
85 #define OMAP7XX_GPIO_INT_STATUS 0x14
87 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
90 * omap24xx specific GPIO registers
92 #define OMAP242X_GPIO1_BASE 0x48018000
93 #define OMAP242X_GPIO2_BASE 0x4801a000
94 #define OMAP242X_GPIO3_BASE 0x4801c000
95 #define OMAP242X_GPIO4_BASE 0x4801e000
97 #define OMAP243X_GPIO1_BASE 0x4900C000
98 #define OMAP243X_GPIO2_BASE 0x4900E000
99 #define OMAP243X_GPIO3_BASE 0x49010000
100 #define OMAP243X_GPIO4_BASE 0x49012000
101 #define OMAP243X_GPIO5_BASE 0x480B6000
103 #define OMAP24XX_GPIO_REVISION 0x0000
104 #define OMAP24XX_GPIO_SYSCONFIG 0x0010
105 #define OMAP24XX_GPIO_SYSSTATUS 0x0014
106 #define OMAP24XX_GPIO_IRQSTATUS1 0x0018
107 #define OMAP24XX_GPIO_IRQSTATUS2 0x0028
108 #define OMAP24XX_GPIO_IRQENABLE2 0x002c
109 #define OMAP24XX_GPIO_IRQENABLE1 0x001c
110 #define OMAP24XX_GPIO_WAKE_EN 0x0020
111 #define OMAP24XX_GPIO_CTRL 0x0030
112 #define OMAP24XX_GPIO_OE 0x0034
113 #define OMAP24XX_GPIO_DATAIN 0x0038
114 #define OMAP24XX_GPIO_DATAOUT 0x003c
115 #define OMAP24XX_GPIO_LEVELDETECT0 0x0040
116 #define OMAP24XX_GPIO_LEVELDETECT1 0x0044
117 #define OMAP24XX_GPIO_RISINGDETECT 0x0048
118 #define OMAP24XX_GPIO_FALLINGDETECT 0x004c
119 #define OMAP24XX_GPIO_DEBOUNCE_EN 0x0050
120 #define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0054
121 #define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060
122 #define OMAP24XX_GPIO_SETIRQENABLE1 0x0064
123 #define OMAP24XX_GPIO_CLEARWKUENA 0x0080
124 #define OMAP24XX_GPIO_SETWKUENA 0x0084
125 #define OMAP24XX_GPIO_CLEARDATAOUT 0x0090
126 #define OMAP24XX_GPIO_SETDATAOUT 0x0094
128 #define OMAP4_GPIO_REVISION 0x0000
129 #define OMAP4_GPIO_SYSCONFIG 0x0010
130 #define OMAP4_GPIO_EOI 0x0020
131 #define OMAP4_GPIO_IRQSTATUSRAW0 0x0024
132 #define OMAP4_GPIO_IRQSTATUSRAW1 0x0028
133 #define OMAP4_GPIO_IRQSTATUS0 0x002c
134 #define OMAP4_GPIO_IRQSTATUS1 0x0030
135 #define OMAP4_GPIO_IRQSTATUSSET0 0x0034
136 #define OMAP4_GPIO_IRQSTATUSSET1 0x0038
137 #define OMAP4_GPIO_IRQSTATUSCLR0 0x003c
138 #define OMAP4_GPIO_IRQSTATUSCLR1 0x0040
139 #define OMAP4_GPIO_IRQWAKEN0 0x0044
140 #define OMAP4_GPIO_IRQWAKEN1 0x0048
141 #define OMAP4_GPIO_SYSSTATUS 0x0114
142 #define OMAP4_GPIO_IRQENABLE1 0x011c
143 #define OMAP4_GPIO_WAKE_EN 0x0120
144 #define OMAP4_GPIO_IRQSTATUS2 0x0128
145 #define OMAP4_GPIO_IRQENABLE2 0x012c
146 #define OMAP4_GPIO_CTRL 0x0130
147 #define OMAP4_GPIO_OE 0x0134
148 #define OMAP4_GPIO_DATAIN 0x0138
149 #define OMAP4_GPIO_DATAOUT 0x013c
150 #define OMAP4_GPIO_LEVELDETECT0 0x0140
151 #define OMAP4_GPIO_LEVELDETECT1 0x0144
152 #define OMAP4_GPIO_RISINGDETECT 0x0148
153 #define OMAP4_GPIO_FALLINGDETECT 0x014c
154 #define OMAP4_GPIO_DEBOUNCENABLE 0x0150
155 #define OMAP4_GPIO_DEBOUNCINGTIME 0x0154
156 #define OMAP4_GPIO_CLEARIRQENABLE1 0x0160
157 #define OMAP4_GPIO_SETIRQENABLE1 0x0164
158 #define OMAP4_GPIO_CLEARWKUENA 0x0180
159 #define OMAP4_GPIO_SETWKUENA 0x0184
160 #define OMAP4_GPIO_CLEARDATAOUT 0x0190
161 #define OMAP4_GPIO_SETDATAOUT 0x0194
163 * omap34xx specific GPIO registers
166 #define OMAP34XX_GPIO1_BASE 0x48310000
167 #define OMAP34XX_GPIO2_BASE 0x49050000
168 #define OMAP34XX_GPIO3_BASE 0x49052000
169 #define OMAP34XX_GPIO4_BASE 0x49054000
170 #define OMAP34XX_GPIO5_BASE 0x49056000
171 #define OMAP34XX_GPIO6_BASE 0x49058000
174 * OMAP44XX specific GPIO registers
176 #define OMAP44XX_GPIO1_BASE 0x4a310000
177 #define OMAP44XX_GPIO2_BASE 0x48055000
178 #define OMAP44XX_GPIO3_BASE 0x48057000
179 #define OMAP44XX_GPIO4_BASE 0x48059000
180 #define OMAP44XX_GPIO5_BASE 0x4805B000
181 #define OMAP44XX_GPIO6_BASE 0x4805D000
187 u16 virtual_irq_start
;
189 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
193 #ifdef CONFIG_ARCH_OMAP2PLUS
194 u32 non_wakeup_gpios
;
195 u32 enabled_non_wakeup_gpios
;
198 u32 saved_fallingdetect
;
199 u32 saved_risingdetect
;
204 struct gpio_chip chip
;
207 u32 dbck_enable_mask
;
210 #define METHOD_MPUIO 0
211 #define METHOD_GPIO_1510 1
212 #define METHOD_GPIO_1610 2
213 #define METHOD_GPIO_7XX 3
214 #define METHOD_GPIO_24XX 5
215 #define METHOD_GPIO_44XX 6
217 #ifdef CONFIG_ARCH_OMAP16XX
218 static struct gpio_bank gpio_bank_1610
[5] = {
219 { OMAP1_MPUIO_VBASE
, NULL
, INT_MPUIO
, IH_MPUIO_BASE
,
221 { OMAP1610_GPIO1_BASE
, NULL
, INT_GPIO_BANK1
, IH_GPIO_BASE
,
223 { OMAP1610_GPIO2_BASE
, NULL
, INT_1610_GPIO_BANK2
, IH_GPIO_BASE
+ 16,
225 { OMAP1610_GPIO3_BASE
, NULL
, INT_1610_GPIO_BANK3
, IH_GPIO_BASE
+ 32,
227 { OMAP1610_GPIO4_BASE
, NULL
, INT_1610_GPIO_BANK4
, IH_GPIO_BASE
+ 48,
232 #ifdef CONFIG_ARCH_OMAP15XX
233 static struct gpio_bank gpio_bank_1510
[2] = {
234 { OMAP1_MPUIO_VBASE
, NULL
, INT_MPUIO
, IH_MPUIO_BASE
,
236 { OMAP1510_GPIO_BASE
, NULL
, INT_GPIO_BANK1
, IH_GPIO_BASE
,
241 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
242 static struct gpio_bank gpio_bank_7xx
[7] = {
243 { OMAP1_MPUIO_VBASE
, NULL
, INT_7XX_MPUIO
, IH_MPUIO_BASE
,
245 { OMAP7XX_GPIO1_BASE
, NULL
, INT_7XX_GPIO_BANK1
, IH_GPIO_BASE
,
247 { OMAP7XX_GPIO2_BASE
, NULL
, INT_7XX_GPIO_BANK2
, IH_GPIO_BASE
+ 32,
249 { OMAP7XX_GPIO3_BASE
, NULL
, INT_7XX_GPIO_BANK3
, IH_GPIO_BASE
+ 64,
251 { OMAP7XX_GPIO4_BASE
, NULL
, INT_7XX_GPIO_BANK4
, IH_GPIO_BASE
+ 96,
253 { OMAP7XX_GPIO5_BASE
, NULL
, INT_7XX_GPIO_BANK5
, IH_GPIO_BASE
+ 128,
255 { OMAP7XX_GPIO6_BASE
, NULL
, INT_7XX_GPIO_BANK6
, IH_GPIO_BASE
+ 160,
260 #ifdef CONFIG_ARCH_OMAP2
262 static struct gpio_bank gpio_bank_242x
[4] = {
263 { OMAP242X_GPIO1_BASE
, NULL
, INT_24XX_GPIO_BANK1
, IH_GPIO_BASE
,
265 { OMAP242X_GPIO2_BASE
, NULL
, INT_24XX_GPIO_BANK2
, IH_GPIO_BASE
+ 32,
267 { OMAP242X_GPIO3_BASE
, NULL
, INT_24XX_GPIO_BANK3
, IH_GPIO_BASE
+ 64,
269 { OMAP242X_GPIO4_BASE
, NULL
, INT_24XX_GPIO_BANK4
, IH_GPIO_BASE
+ 96,
273 static struct gpio_bank gpio_bank_243x
[5] = {
274 { OMAP243X_GPIO1_BASE
, NULL
, INT_24XX_GPIO_BANK1
, IH_GPIO_BASE
,
276 { OMAP243X_GPIO2_BASE
, NULL
, INT_24XX_GPIO_BANK2
, IH_GPIO_BASE
+ 32,
278 { OMAP243X_GPIO3_BASE
, NULL
, INT_24XX_GPIO_BANK3
, IH_GPIO_BASE
+ 64,
280 { OMAP243X_GPIO4_BASE
, NULL
, INT_24XX_GPIO_BANK4
, IH_GPIO_BASE
+ 96,
282 { OMAP243X_GPIO5_BASE
, NULL
, INT_24XX_GPIO_BANK5
, IH_GPIO_BASE
+ 128,
288 #ifdef CONFIG_ARCH_OMAP3
289 static struct gpio_bank gpio_bank_34xx
[6] = {
290 { OMAP34XX_GPIO1_BASE
, NULL
, INT_34XX_GPIO_BANK1
, IH_GPIO_BASE
,
292 { OMAP34XX_GPIO2_BASE
, NULL
, INT_34XX_GPIO_BANK2
, IH_GPIO_BASE
+ 32,
294 { OMAP34XX_GPIO3_BASE
, NULL
, INT_34XX_GPIO_BANK3
, IH_GPIO_BASE
+ 64,
296 { OMAP34XX_GPIO4_BASE
, NULL
, INT_34XX_GPIO_BANK4
, IH_GPIO_BASE
+ 96,
298 { OMAP34XX_GPIO5_BASE
, NULL
, INT_34XX_GPIO_BANK5
, IH_GPIO_BASE
+ 128,
300 { OMAP34XX_GPIO6_BASE
, NULL
, INT_34XX_GPIO_BANK6
, IH_GPIO_BASE
+ 160,
304 struct omap3_gpio_regs
{
318 static struct omap3_gpio_regs gpio_context
[OMAP34XX_NR_GPIOS
];
321 #ifdef CONFIG_ARCH_OMAP4
322 static struct gpio_bank gpio_bank_44xx
[6] = {
323 { OMAP44XX_GPIO1_BASE
, NULL
, OMAP44XX_IRQ_GPIO1
, IH_GPIO_BASE
,
325 { OMAP44XX_GPIO2_BASE
, NULL
, OMAP44XX_IRQ_GPIO2
, IH_GPIO_BASE
+ 32,
327 { OMAP44XX_GPIO3_BASE
, NULL
, OMAP44XX_IRQ_GPIO3
, IH_GPIO_BASE
+ 64,
329 { OMAP44XX_GPIO4_BASE
, NULL
, OMAP44XX_IRQ_GPIO4
, IH_GPIO_BASE
+ 96,
331 { OMAP44XX_GPIO5_BASE
, NULL
, OMAP44XX_IRQ_GPIO5
, IH_GPIO_BASE
+ 128,
333 { OMAP44XX_GPIO6_BASE
, NULL
, OMAP44XX_IRQ_GPIO6
, IH_GPIO_BASE
+ 160,
339 static struct gpio_bank
*gpio_bank
;
340 static int gpio_bank_count
;
342 static inline struct gpio_bank
*get_gpio_bank(int gpio
)
344 if (cpu_is_omap15xx()) {
345 if (OMAP_GPIO_IS_MPUIO(gpio
))
346 return &gpio_bank
[0];
347 return &gpio_bank
[1];
349 if (cpu_is_omap16xx()) {
350 if (OMAP_GPIO_IS_MPUIO(gpio
))
351 return &gpio_bank
[0];
352 return &gpio_bank
[1 + (gpio
>> 4)];
354 if (cpu_is_omap7xx()) {
355 if (OMAP_GPIO_IS_MPUIO(gpio
))
356 return &gpio_bank
[0];
357 return &gpio_bank
[1 + (gpio
>> 5)];
359 if (cpu_is_omap24xx())
360 return &gpio_bank
[gpio
>> 5];
361 if (cpu_is_omap34xx() || cpu_is_omap44xx())
362 return &gpio_bank
[gpio
>> 5];
367 static inline int get_gpio_index(int gpio
)
369 if (cpu_is_omap7xx())
371 if (cpu_is_omap24xx())
373 if (cpu_is_omap34xx() || cpu_is_omap44xx())
378 static inline int gpio_valid(int gpio
)
382 if (cpu_class_is_omap1() && OMAP_GPIO_IS_MPUIO(gpio
)) {
383 if (gpio
>= OMAP_MAX_GPIO_LINES
+ 16)
387 if (cpu_is_omap15xx() && gpio
< 16)
389 if ((cpu_is_omap16xx()) && gpio
< 64)
391 if (cpu_is_omap7xx() && gpio
< 192)
393 if (cpu_is_omap2420() && gpio
< 128)
395 if (cpu_is_omap2430() && gpio
< 160)
397 if ((cpu_is_omap34xx() || cpu_is_omap44xx()) && gpio
< 192)
402 static int check_gpio(int gpio
)
404 if (unlikely(gpio_valid(gpio
) < 0)) {
405 printk(KERN_ERR
"omap-gpio: invalid GPIO %d\n", gpio
);
412 static void _set_gpio_direction(struct gpio_bank
*bank
, int gpio
, int is_input
)
414 void __iomem
*reg
= bank
->base
;
417 switch (bank
->method
) {
418 #ifdef CONFIG_ARCH_OMAP1
420 reg
+= OMAP_MPUIO_IO_CNTL
;
423 #ifdef CONFIG_ARCH_OMAP15XX
424 case METHOD_GPIO_1510
:
425 reg
+= OMAP1510_GPIO_DIR_CONTROL
;
428 #ifdef CONFIG_ARCH_OMAP16XX
429 case METHOD_GPIO_1610
:
430 reg
+= OMAP1610_GPIO_DIRECTION
;
433 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
434 case METHOD_GPIO_7XX
:
435 reg
+= OMAP7XX_GPIO_DIR_CONTROL
;
438 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
439 case METHOD_GPIO_24XX
:
440 reg
+= OMAP24XX_GPIO_OE
;
443 #if defined(CONFIG_ARCH_OMAP4)
444 case METHOD_GPIO_44XX
:
445 reg
+= OMAP4_GPIO_OE
;
452 l
= __raw_readl(reg
);
457 __raw_writel(l
, reg
);
460 static void _set_gpio_dataout(struct gpio_bank
*bank
, int gpio
, int enable
)
462 void __iomem
*reg
= bank
->base
;
465 switch (bank
->method
) {
466 #ifdef CONFIG_ARCH_OMAP1
468 reg
+= OMAP_MPUIO_OUTPUT
;
469 l
= __raw_readl(reg
);
476 #ifdef CONFIG_ARCH_OMAP15XX
477 case METHOD_GPIO_1510
:
478 reg
+= OMAP1510_GPIO_DATA_OUTPUT
;
479 l
= __raw_readl(reg
);
486 #ifdef CONFIG_ARCH_OMAP16XX
487 case METHOD_GPIO_1610
:
489 reg
+= OMAP1610_GPIO_SET_DATAOUT
;
491 reg
+= OMAP1610_GPIO_CLEAR_DATAOUT
;
495 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
496 case METHOD_GPIO_7XX
:
497 reg
+= OMAP7XX_GPIO_DATA_OUTPUT
;
498 l
= __raw_readl(reg
);
505 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
506 case METHOD_GPIO_24XX
:
508 reg
+= OMAP24XX_GPIO_SETDATAOUT
;
510 reg
+= OMAP24XX_GPIO_CLEARDATAOUT
;
514 #ifdef CONFIG_ARCH_OMAP4
515 case METHOD_GPIO_44XX
:
517 reg
+= OMAP4_GPIO_SETDATAOUT
;
519 reg
+= OMAP4_GPIO_CLEARDATAOUT
;
527 __raw_writel(l
, reg
);
530 static int _get_gpio_datain(struct gpio_bank
*bank
, int gpio
)
534 if (check_gpio(gpio
) < 0)
537 switch (bank
->method
) {
538 #ifdef CONFIG_ARCH_OMAP1
540 reg
+= OMAP_MPUIO_INPUT_LATCH
;
543 #ifdef CONFIG_ARCH_OMAP15XX
544 case METHOD_GPIO_1510
:
545 reg
+= OMAP1510_GPIO_DATA_INPUT
;
548 #ifdef CONFIG_ARCH_OMAP16XX
549 case METHOD_GPIO_1610
:
550 reg
+= OMAP1610_GPIO_DATAIN
;
553 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
554 case METHOD_GPIO_7XX
:
555 reg
+= OMAP7XX_GPIO_DATA_INPUT
;
558 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
559 case METHOD_GPIO_24XX
:
560 reg
+= OMAP24XX_GPIO_DATAIN
;
563 #ifdef CONFIG_ARCH_OMAP4
564 case METHOD_GPIO_44XX
:
565 reg
+= OMAP4_GPIO_DATAIN
;
571 return (__raw_readl(reg
)
572 & (1 << get_gpio_index(gpio
))) != 0;
575 static int _get_gpio_dataout(struct gpio_bank
*bank
, int gpio
)
579 if (check_gpio(gpio
) < 0)
583 switch (bank
->method
) {
584 #ifdef CONFIG_ARCH_OMAP1
586 reg
+= OMAP_MPUIO_OUTPUT
;
589 #ifdef CONFIG_ARCH_OMAP15XX
590 case METHOD_GPIO_1510
:
591 reg
+= OMAP1510_GPIO_DATA_OUTPUT
;
594 #ifdef CONFIG_ARCH_OMAP16XX
595 case METHOD_GPIO_1610
:
596 reg
+= OMAP1610_GPIO_DATAOUT
;
599 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
600 case METHOD_GPIO_7XX
:
601 reg
+= OMAP7XX_GPIO_DATA_OUTPUT
;
604 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
605 case METHOD_GPIO_24XX
:
606 reg
+= OMAP24XX_GPIO_DATAOUT
;
609 #ifdef CONFIG_ARCH_OMAP4
610 case METHOD_GPIO_44XX
:
611 reg
+= OMAP4_GPIO_DATAOUT
;
618 return (__raw_readl(reg
) & (1 << get_gpio_index(gpio
))) != 0;
621 #define MOD_REG_BIT(reg, bit_mask, set) \
623 int l = __raw_readl(base + reg); \
624 if (set) l |= bit_mask; \
625 else l &= ~bit_mask; \
626 __raw_writel(l, base + reg); \
630 * _set_gpio_debounce - low level gpio debounce time
631 * @bank: the gpio bank we're acting upon
632 * @gpio: the gpio number on this @gpio
633 * @debounce: debounce time to use
635 * OMAP's debounce time is in 31us steps so we need
636 * to convert and round up to the closest unit.
638 static void _set_gpio_debounce(struct gpio_bank
*bank
, unsigned gpio
,
641 void __iomem
*reg
= bank
->base
;
647 else if (debounce
> 7936)
650 debounce
= (debounce
/ 0x1f) - 1;
652 l
= 1 << get_gpio_index(gpio
);
654 if (cpu_is_omap44xx())
655 reg
+= OMAP4_GPIO_DEBOUNCINGTIME
;
657 reg
+= OMAP24XX_GPIO_DEBOUNCE_VAL
;
659 __raw_writel(debounce
, reg
);
662 if (cpu_is_omap44xx())
663 reg
+= OMAP4_GPIO_DEBOUNCENABLE
;
665 reg
+= OMAP24XX_GPIO_DEBOUNCE_EN
;
667 val
= __raw_readl(reg
);
671 if (cpu_is_omap34xx() || cpu_is_omap44xx())
672 clk_enable(bank
->dbck
);
675 if (cpu_is_omap34xx() || cpu_is_omap44xx())
676 clk_disable(bank
->dbck
);
678 bank
->dbck_enable_mask
= val
;
680 __raw_writel(val
, reg
);
683 #ifdef CONFIG_ARCH_OMAP2PLUS
684 static inline void set_24xx_gpio_triggering(struct gpio_bank
*bank
, int gpio
,
687 void __iomem
*base
= bank
->base
;
688 u32 gpio_bit
= 1 << gpio
;
691 if (cpu_is_omap44xx()) {
692 MOD_REG_BIT(OMAP4_GPIO_LEVELDETECT0
, gpio_bit
,
693 trigger
& IRQ_TYPE_LEVEL_LOW
);
694 MOD_REG_BIT(OMAP4_GPIO_LEVELDETECT1
, gpio_bit
,
695 trigger
& IRQ_TYPE_LEVEL_HIGH
);
696 MOD_REG_BIT(OMAP4_GPIO_RISINGDETECT
, gpio_bit
,
697 trigger
& IRQ_TYPE_EDGE_RISING
);
698 MOD_REG_BIT(OMAP4_GPIO_FALLINGDETECT
, gpio_bit
,
699 trigger
& IRQ_TYPE_EDGE_FALLING
);
701 MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT0
, gpio_bit
,
702 trigger
& IRQ_TYPE_LEVEL_LOW
);
703 MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT1
, gpio_bit
,
704 trigger
& IRQ_TYPE_LEVEL_HIGH
);
705 MOD_REG_BIT(OMAP24XX_GPIO_RISINGDETECT
, gpio_bit
,
706 trigger
& IRQ_TYPE_EDGE_RISING
);
707 MOD_REG_BIT(OMAP24XX_GPIO_FALLINGDETECT
, gpio_bit
,
708 trigger
& IRQ_TYPE_EDGE_FALLING
);
710 if (likely(!(bank
->non_wakeup_gpios
& gpio_bit
))) {
711 if (cpu_is_omap44xx()) {
713 __raw_writel(1 << gpio
, bank
->base
+
714 OMAP4_GPIO_IRQWAKEN0
);
716 val
= __raw_readl(bank
->base
+
717 OMAP4_GPIO_IRQWAKEN0
);
718 __raw_writel(val
& (~(1 << gpio
)), bank
->base
+
719 OMAP4_GPIO_IRQWAKEN0
);
723 * GPIO wakeup request can only be generated on edge
726 if (trigger
& IRQ_TYPE_EDGE_BOTH
)
727 __raw_writel(1 << gpio
, bank
->base
728 + OMAP24XX_GPIO_SETWKUENA
);
730 __raw_writel(1 << gpio
, bank
->base
731 + OMAP24XX_GPIO_CLEARWKUENA
);
734 /* This part needs to be executed always for OMAP34xx */
735 if (cpu_is_omap34xx() || (bank
->non_wakeup_gpios
& gpio_bit
)) {
737 * Log the edge gpio and manually trigger the IRQ
738 * after resume if the input level changes
739 * to avoid irq lost during PER RET/OFF mode
740 * Applies for omap2 non-wakeup gpio and all omap3 gpios
742 if (trigger
& IRQ_TYPE_EDGE_BOTH
)
743 bank
->enabled_non_wakeup_gpios
|= gpio_bit
;
745 bank
->enabled_non_wakeup_gpios
&= ~gpio_bit
;
748 if (cpu_is_omap44xx()) {
750 __raw_readl(bank
->base
+ OMAP4_GPIO_LEVELDETECT0
) |
751 __raw_readl(bank
->base
+ OMAP4_GPIO_LEVELDETECT1
);
754 __raw_readl(bank
->base
+ OMAP24XX_GPIO_LEVELDETECT0
) |
755 __raw_readl(bank
->base
+ OMAP24XX_GPIO_LEVELDETECT1
);
760 #ifdef CONFIG_ARCH_OMAP1
762 * This only applies to chips that can't do both rising and falling edge
763 * detection at once. For all other chips, this function is a noop.
765 static void _toggle_gpio_edge_triggering(struct gpio_bank
*bank
, int gpio
)
767 void __iomem
*reg
= bank
->base
;
770 switch (bank
->method
) {
772 reg
+= OMAP_MPUIO_GPIO_INT_EDGE
;
774 #ifdef CONFIG_ARCH_OMAP15XX
775 case METHOD_GPIO_1510
:
776 reg
+= OMAP1510_GPIO_INT_CONTROL
;
779 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
780 case METHOD_GPIO_7XX
:
781 reg
+= OMAP7XX_GPIO_INT_CONTROL
;
788 l
= __raw_readl(reg
);
794 __raw_writel(l
, reg
);
798 static int _set_gpio_triggering(struct gpio_bank
*bank
, int gpio
, int trigger
)
800 void __iomem
*reg
= bank
->base
;
803 switch (bank
->method
) {
804 #ifdef CONFIG_ARCH_OMAP1
806 reg
+= OMAP_MPUIO_GPIO_INT_EDGE
;
807 l
= __raw_readl(reg
);
808 if ((trigger
& IRQ_TYPE_SENSE_MASK
) == IRQ_TYPE_EDGE_BOTH
)
809 bank
->toggle_mask
|= 1 << gpio
;
810 if (trigger
& IRQ_TYPE_EDGE_RISING
)
812 else if (trigger
& IRQ_TYPE_EDGE_FALLING
)
818 #ifdef CONFIG_ARCH_OMAP15XX
819 case METHOD_GPIO_1510
:
820 reg
+= OMAP1510_GPIO_INT_CONTROL
;
821 l
= __raw_readl(reg
);
822 if ((trigger
& IRQ_TYPE_SENSE_MASK
) == IRQ_TYPE_EDGE_BOTH
)
823 bank
->toggle_mask
|= 1 << gpio
;
824 if (trigger
& IRQ_TYPE_EDGE_RISING
)
826 else if (trigger
& IRQ_TYPE_EDGE_FALLING
)
832 #ifdef CONFIG_ARCH_OMAP16XX
833 case METHOD_GPIO_1610
:
835 reg
+= OMAP1610_GPIO_EDGE_CTRL2
;
837 reg
+= OMAP1610_GPIO_EDGE_CTRL1
;
839 l
= __raw_readl(reg
);
840 l
&= ~(3 << (gpio
<< 1));
841 if (trigger
& IRQ_TYPE_EDGE_RISING
)
842 l
|= 2 << (gpio
<< 1);
843 if (trigger
& IRQ_TYPE_EDGE_FALLING
)
844 l
|= 1 << (gpio
<< 1);
846 /* Enable wake-up during idle for dynamic tick */
847 __raw_writel(1 << gpio
, bank
->base
+ OMAP1610_GPIO_SET_WAKEUPENA
);
849 __raw_writel(1 << gpio
, bank
->base
+ OMAP1610_GPIO_CLEAR_WAKEUPENA
);
852 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
853 case METHOD_GPIO_7XX
:
854 reg
+= OMAP7XX_GPIO_INT_CONTROL
;
855 l
= __raw_readl(reg
);
856 if ((trigger
& IRQ_TYPE_SENSE_MASK
) == IRQ_TYPE_EDGE_BOTH
)
857 bank
->toggle_mask
|= 1 << gpio
;
858 if (trigger
& IRQ_TYPE_EDGE_RISING
)
860 else if (trigger
& IRQ_TYPE_EDGE_FALLING
)
866 #ifdef CONFIG_ARCH_OMAP2PLUS
867 case METHOD_GPIO_24XX
:
868 case METHOD_GPIO_44XX
:
869 set_24xx_gpio_triggering(bank
, gpio
, trigger
);
875 __raw_writel(l
, reg
);
881 static int gpio_irq_type(unsigned irq
, unsigned type
)
883 struct gpio_bank
*bank
;
888 if (!cpu_class_is_omap2() && irq
> IH_MPUIO_BASE
)
889 gpio
= OMAP_MPUIO(irq
- IH_MPUIO_BASE
);
891 gpio
= irq
- IH_GPIO_BASE
;
893 if (check_gpio(gpio
) < 0)
896 if (type
& ~IRQ_TYPE_SENSE_MASK
)
899 /* OMAP1 allows only only edge triggering */
900 if (!cpu_class_is_omap2()
901 && (type
& (IRQ_TYPE_LEVEL_LOW
|IRQ_TYPE_LEVEL_HIGH
)))
904 bank
= get_irq_chip_data(irq
);
905 spin_lock_irqsave(&bank
->lock
, flags
);
906 retval
= _set_gpio_triggering(bank
, get_gpio_index(gpio
), type
);
908 irq_desc
[irq
].status
&= ~IRQ_TYPE_SENSE_MASK
;
909 irq_desc
[irq
].status
|= type
;
911 spin_unlock_irqrestore(&bank
->lock
, flags
);
913 if (type
& (IRQ_TYPE_LEVEL_LOW
| IRQ_TYPE_LEVEL_HIGH
))
914 __set_irq_handler_unlocked(irq
, handle_level_irq
);
915 else if (type
& (IRQ_TYPE_EDGE_FALLING
| IRQ_TYPE_EDGE_RISING
))
916 __set_irq_handler_unlocked(irq
, handle_edge_irq
);
921 static void _clear_gpio_irqbank(struct gpio_bank
*bank
, int gpio_mask
)
923 void __iomem
*reg
= bank
->base
;
925 switch (bank
->method
) {
926 #ifdef CONFIG_ARCH_OMAP1
928 /* MPUIO irqstatus is reset by reading the status register,
929 * so do nothing here */
932 #ifdef CONFIG_ARCH_OMAP15XX
933 case METHOD_GPIO_1510
:
934 reg
+= OMAP1510_GPIO_INT_STATUS
;
937 #ifdef CONFIG_ARCH_OMAP16XX
938 case METHOD_GPIO_1610
:
939 reg
+= OMAP1610_GPIO_IRQSTATUS1
;
942 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
943 case METHOD_GPIO_7XX
:
944 reg
+= OMAP7XX_GPIO_INT_STATUS
;
947 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
948 case METHOD_GPIO_24XX
:
949 reg
+= OMAP24XX_GPIO_IRQSTATUS1
;
952 #if defined(CONFIG_ARCH_OMAP4)
953 case METHOD_GPIO_44XX
:
954 reg
+= OMAP4_GPIO_IRQSTATUS0
;
961 __raw_writel(gpio_mask
, reg
);
963 /* Workaround for clearing DSP GPIO interrupts to allow retention */
964 if (cpu_is_omap24xx() || cpu_is_omap34xx())
965 reg
= bank
->base
+ OMAP24XX_GPIO_IRQSTATUS2
;
966 else if (cpu_is_omap44xx())
967 reg
= bank
->base
+ OMAP4_GPIO_IRQSTATUS1
;
969 if (cpu_is_omap24xx() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
970 __raw_writel(gpio_mask
, reg
);
972 /* Flush posted write for the irq status to avoid spurious interrupts */
977 static inline void _clear_gpio_irqstatus(struct gpio_bank
*bank
, int gpio
)
979 _clear_gpio_irqbank(bank
, 1 << get_gpio_index(gpio
));
982 static u32
_get_gpio_irqbank_mask(struct gpio_bank
*bank
)
984 void __iomem
*reg
= bank
->base
;
989 switch (bank
->method
) {
990 #ifdef CONFIG_ARCH_OMAP1
992 reg
+= OMAP_MPUIO_GPIO_MASKIT
;
997 #ifdef CONFIG_ARCH_OMAP15XX
998 case METHOD_GPIO_1510
:
999 reg
+= OMAP1510_GPIO_INT_MASK
;
1004 #ifdef CONFIG_ARCH_OMAP16XX
1005 case METHOD_GPIO_1610
:
1006 reg
+= OMAP1610_GPIO_IRQENABLE1
;
1010 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
1011 case METHOD_GPIO_7XX
:
1012 reg
+= OMAP7XX_GPIO_INT_MASK
;
1017 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1018 case METHOD_GPIO_24XX
:
1019 reg
+= OMAP24XX_GPIO_IRQENABLE1
;
1023 #if defined(CONFIG_ARCH_OMAP4)
1024 case METHOD_GPIO_44XX
:
1025 reg
+= OMAP4_GPIO_IRQSTATUSSET0
;
1034 l
= __raw_readl(reg
);
1041 static void _enable_gpio_irqbank(struct gpio_bank
*bank
, int gpio_mask
, int enable
)
1043 void __iomem
*reg
= bank
->base
;
1046 switch (bank
->method
) {
1047 #ifdef CONFIG_ARCH_OMAP1
1049 reg
+= OMAP_MPUIO_GPIO_MASKIT
;
1050 l
= __raw_readl(reg
);
1057 #ifdef CONFIG_ARCH_OMAP15XX
1058 case METHOD_GPIO_1510
:
1059 reg
+= OMAP1510_GPIO_INT_MASK
;
1060 l
= __raw_readl(reg
);
1067 #ifdef CONFIG_ARCH_OMAP16XX
1068 case METHOD_GPIO_1610
:
1070 reg
+= OMAP1610_GPIO_SET_IRQENABLE1
;
1072 reg
+= OMAP1610_GPIO_CLEAR_IRQENABLE1
;
1076 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
1077 case METHOD_GPIO_7XX
:
1078 reg
+= OMAP7XX_GPIO_INT_MASK
;
1079 l
= __raw_readl(reg
);
1086 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1087 case METHOD_GPIO_24XX
:
1089 reg
+= OMAP24XX_GPIO_SETIRQENABLE1
;
1091 reg
+= OMAP24XX_GPIO_CLEARIRQENABLE1
;
1095 #ifdef CONFIG_ARCH_OMAP4
1096 case METHOD_GPIO_44XX
:
1098 reg
+= OMAP4_GPIO_IRQSTATUSSET0
;
1100 reg
+= OMAP4_GPIO_IRQSTATUSCLR0
;
1108 __raw_writel(l
, reg
);
1111 static inline void _set_gpio_irqenable(struct gpio_bank
*bank
, int gpio
, int enable
)
1113 _enable_gpio_irqbank(bank
, 1 << get_gpio_index(gpio
), enable
);
1117 * Note that ENAWAKEUP needs to be enabled in GPIO_SYSCONFIG register.
1118 * 1510 does not seem to have a wake-up register. If JTAG is connected
1119 * to the target, system will wake up always on GPIO events. While
1120 * system is running all registered GPIO interrupts need to have wake-up
1121 * enabled. When system is suspended, only selected GPIO interrupts need
1122 * to have wake-up enabled.
1124 static int _set_gpio_wakeup(struct gpio_bank
*bank
, int gpio
, int enable
)
1126 unsigned long uninitialized_var(flags
);
1128 switch (bank
->method
) {
1129 #ifdef CONFIG_ARCH_OMAP16XX
1131 case METHOD_GPIO_1610
:
1132 spin_lock_irqsave(&bank
->lock
, flags
);
1134 bank
->suspend_wakeup
|= (1 << gpio
);
1136 bank
->suspend_wakeup
&= ~(1 << gpio
);
1137 spin_unlock_irqrestore(&bank
->lock
, flags
);
1140 #ifdef CONFIG_ARCH_OMAP2PLUS
1141 case METHOD_GPIO_24XX
:
1142 case METHOD_GPIO_44XX
:
1143 if (bank
->non_wakeup_gpios
& (1 << gpio
)) {
1144 printk(KERN_ERR
"Unable to modify wakeup on "
1145 "non-wakeup GPIO%d\n",
1146 (bank
- gpio_bank
) * 32 + gpio
);
1149 spin_lock_irqsave(&bank
->lock
, flags
);
1151 bank
->suspend_wakeup
|= (1 << gpio
);
1153 bank
->suspend_wakeup
&= ~(1 << gpio
);
1154 spin_unlock_irqrestore(&bank
->lock
, flags
);
1158 printk(KERN_ERR
"Can't enable GPIO wakeup for method %i\n",
1164 static void _reset_gpio(struct gpio_bank
*bank
, int gpio
)
1166 _set_gpio_direction(bank
, get_gpio_index(gpio
), 1);
1167 _set_gpio_irqenable(bank
, gpio
, 0);
1168 _clear_gpio_irqstatus(bank
, gpio
);
1169 _set_gpio_triggering(bank
, get_gpio_index(gpio
), IRQ_TYPE_NONE
);
1172 /* Use disable_irq_wake() and enable_irq_wake() functions from drivers */
1173 static int gpio_wake_enable(unsigned int irq
, unsigned int enable
)
1175 unsigned int gpio
= irq
- IH_GPIO_BASE
;
1176 struct gpio_bank
*bank
;
1179 if (check_gpio(gpio
) < 0)
1181 bank
= get_irq_chip_data(irq
);
1182 retval
= _set_gpio_wakeup(bank
, get_gpio_index(gpio
), enable
);
1187 static int omap_gpio_request(struct gpio_chip
*chip
, unsigned offset
)
1189 struct gpio_bank
*bank
= container_of(chip
, struct gpio_bank
, chip
);
1190 unsigned long flags
;
1192 spin_lock_irqsave(&bank
->lock
, flags
);
1194 /* Set trigger to none. You need to enable the desired trigger with
1195 * request_irq() or set_irq_type().
1197 _set_gpio_triggering(bank
, offset
, IRQ_TYPE_NONE
);
1199 #ifdef CONFIG_ARCH_OMAP15XX
1200 if (bank
->method
== METHOD_GPIO_1510
) {
1203 /* Claim the pin for MPU */
1204 reg
= bank
->base
+ OMAP1510_GPIO_PIN_CONTROL
;
1205 __raw_writel(__raw_readl(reg
) | (1 << offset
), reg
);
1208 if (!cpu_class_is_omap1()) {
1209 if (!bank
->mod_usage
) {
1210 void __iomem
*reg
= bank
->base
;
1213 if (cpu_is_omap24xx() || cpu_is_omap34xx())
1214 reg
+= OMAP24XX_GPIO_CTRL
;
1215 else if (cpu_is_omap44xx())
1216 reg
+= OMAP4_GPIO_CTRL
;
1217 ctrl
= __raw_readl(reg
);
1218 /* Module is enabled, clocks are not gated */
1220 __raw_writel(ctrl
, reg
);
1222 bank
->mod_usage
|= 1 << offset
;
1224 spin_unlock_irqrestore(&bank
->lock
, flags
);
1229 static void omap_gpio_free(struct gpio_chip
*chip
, unsigned offset
)
1231 struct gpio_bank
*bank
= container_of(chip
, struct gpio_bank
, chip
);
1232 unsigned long flags
;
1234 spin_lock_irqsave(&bank
->lock
, flags
);
1235 #ifdef CONFIG_ARCH_OMAP16XX
1236 if (bank
->method
== METHOD_GPIO_1610
) {
1237 /* Disable wake-up during idle for dynamic tick */
1238 void __iomem
*reg
= bank
->base
+ OMAP1610_GPIO_CLEAR_WAKEUPENA
;
1239 __raw_writel(1 << offset
, reg
);
1242 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1243 if (bank
->method
== METHOD_GPIO_24XX
) {
1244 /* Disable wake-up during idle for dynamic tick */
1245 void __iomem
*reg
= bank
->base
+ OMAP24XX_GPIO_CLEARWKUENA
;
1246 __raw_writel(1 << offset
, reg
);
1249 #ifdef CONFIG_ARCH_OMAP4
1250 if (bank
->method
== METHOD_GPIO_44XX
) {
1251 /* Disable wake-up during idle for dynamic tick */
1252 void __iomem
*reg
= bank
->base
+ OMAP4_GPIO_IRQWAKEN0
;
1253 __raw_writel(1 << offset
, reg
);
1256 if (!cpu_class_is_omap1()) {
1257 bank
->mod_usage
&= ~(1 << offset
);
1258 if (!bank
->mod_usage
) {
1259 void __iomem
*reg
= bank
->base
;
1262 if (cpu_is_omap24xx() || cpu_is_omap34xx())
1263 reg
+= OMAP24XX_GPIO_CTRL
;
1264 else if (cpu_is_omap44xx())
1265 reg
+= OMAP4_GPIO_CTRL
;
1266 ctrl
= __raw_readl(reg
);
1267 /* Module is disabled, clocks are gated */
1269 __raw_writel(ctrl
, reg
);
1272 _reset_gpio(bank
, bank
->chip
.base
+ offset
);
1273 spin_unlock_irqrestore(&bank
->lock
, flags
);
1277 * We need to unmask the GPIO bank interrupt as soon as possible to
1278 * avoid missing GPIO interrupts for other lines in the bank.
1279 * Then we need to mask-read-clear-unmask the triggered GPIO lines
1280 * in the bank to avoid missing nested interrupts for a GPIO line.
1281 * If we wait to unmask individual GPIO lines in the bank after the
1282 * line's interrupt handler has been run, we may miss some nested
1285 static void gpio_irq_handler(unsigned int irq
, struct irq_desc
*desc
)
1287 void __iomem
*isr_reg
= NULL
;
1289 unsigned int gpio_irq
, gpio_index
;
1290 struct gpio_bank
*bank
;
1294 desc
->chip
->ack(irq
);
1296 bank
= get_irq_data(irq
);
1297 #ifdef CONFIG_ARCH_OMAP1
1298 if (bank
->method
== METHOD_MPUIO
)
1299 isr_reg
= bank
->base
+ OMAP_MPUIO_GPIO_INT
;
1301 #ifdef CONFIG_ARCH_OMAP15XX
1302 if (bank
->method
== METHOD_GPIO_1510
)
1303 isr_reg
= bank
->base
+ OMAP1510_GPIO_INT_STATUS
;
1305 #if defined(CONFIG_ARCH_OMAP16XX)
1306 if (bank
->method
== METHOD_GPIO_1610
)
1307 isr_reg
= bank
->base
+ OMAP1610_GPIO_IRQSTATUS1
;
1309 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
1310 if (bank
->method
== METHOD_GPIO_7XX
)
1311 isr_reg
= bank
->base
+ OMAP7XX_GPIO_INT_STATUS
;
1313 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1314 if (bank
->method
== METHOD_GPIO_24XX
)
1315 isr_reg
= bank
->base
+ OMAP24XX_GPIO_IRQSTATUS1
;
1317 #if defined(CONFIG_ARCH_OMAP4)
1318 if (bank
->method
== METHOD_GPIO_44XX
)
1319 isr_reg
= bank
->base
+ OMAP4_GPIO_IRQSTATUS0
;
1322 u32 isr_saved
, level_mask
= 0;
1325 enabled
= _get_gpio_irqbank_mask(bank
);
1326 isr_saved
= isr
= __raw_readl(isr_reg
) & enabled
;
1328 if (cpu_is_omap15xx() && (bank
->method
== METHOD_MPUIO
))
1331 if (cpu_class_is_omap2()) {
1332 level_mask
= bank
->level_mask
& enabled
;
1335 /* clear edge sensitive interrupts before handler(s) are
1336 called so that we don't miss any interrupt occurred while
1338 _enable_gpio_irqbank(bank
, isr_saved
& ~level_mask
, 0);
1339 _clear_gpio_irqbank(bank
, isr_saved
& ~level_mask
);
1340 _enable_gpio_irqbank(bank
, isr_saved
& ~level_mask
, 1);
1342 /* if there is only edge sensitive GPIO pin interrupts
1343 configured, we could unmask GPIO bank interrupt immediately */
1344 if (!level_mask
&& !unmasked
) {
1346 desc
->chip
->unmask(irq
);
1354 gpio_irq
= bank
->virtual_irq_start
;
1355 for (; isr
!= 0; isr
>>= 1, gpio_irq
++) {
1356 gpio_index
= get_gpio_index(irq_to_gpio(gpio_irq
));
1361 #ifdef CONFIG_ARCH_OMAP1
1363 * Some chips can't respond to both rising and falling
1364 * at the same time. If this irq was requested with
1365 * both flags, we need to flip the ICR data for the IRQ
1366 * to respond to the IRQ for the opposite direction.
1367 * This will be indicated in the bank toggle_mask.
1369 if (bank
->toggle_mask
& (1 << gpio_index
))
1370 _toggle_gpio_edge_triggering(bank
, gpio_index
);
1373 generic_handle_irq(gpio_irq
);
1376 /* if bank has any level sensitive GPIO pin interrupt
1377 configured, we must unmask the bank interrupt only after
1378 handler(s) are executed in order to avoid spurious bank
1381 desc
->chip
->unmask(irq
);
1385 static void gpio_irq_shutdown(unsigned int irq
)
1387 unsigned int gpio
= irq
- IH_GPIO_BASE
;
1388 struct gpio_bank
*bank
= get_irq_chip_data(irq
);
1390 _reset_gpio(bank
, gpio
);
1393 static void gpio_ack_irq(unsigned int irq
)
1395 unsigned int gpio
= irq
- IH_GPIO_BASE
;
1396 struct gpio_bank
*bank
= get_irq_chip_data(irq
);
1398 _clear_gpio_irqstatus(bank
, gpio
);
1401 static void gpio_mask_irq(unsigned int irq
)
1403 unsigned int gpio
= irq
- IH_GPIO_BASE
;
1404 struct gpio_bank
*bank
= get_irq_chip_data(irq
);
1406 _set_gpio_irqenable(bank
, gpio
, 0);
1407 _set_gpio_triggering(bank
, get_gpio_index(gpio
), IRQ_TYPE_NONE
);
1410 static void gpio_unmask_irq(unsigned int irq
)
1412 unsigned int gpio
= irq
- IH_GPIO_BASE
;
1413 struct gpio_bank
*bank
= get_irq_chip_data(irq
);
1414 unsigned int irq_mask
= 1 << get_gpio_index(gpio
);
1415 struct irq_desc
*desc
= irq_to_desc(irq
);
1416 u32 trigger
= desc
->status
& IRQ_TYPE_SENSE_MASK
;
1419 _set_gpio_triggering(bank
, get_gpio_index(gpio
), trigger
);
1421 /* For level-triggered GPIOs, the clearing must be done after
1422 * the HW source is cleared, thus after the handler has run */
1423 if (bank
->level_mask
& irq_mask
) {
1424 _set_gpio_irqenable(bank
, gpio
, 0);
1425 _clear_gpio_irqstatus(bank
, gpio
);
1428 _set_gpio_irqenable(bank
, gpio
, 1);
1431 static struct irq_chip gpio_irq_chip
= {
1433 .shutdown
= gpio_irq_shutdown
,
1434 .ack
= gpio_ack_irq
,
1435 .mask
= gpio_mask_irq
,
1436 .unmask
= gpio_unmask_irq
,
1437 .set_type
= gpio_irq_type
,
1438 .set_wake
= gpio_wake_enable
,
1441 /*---------------------------------------------------------------------*/
1443 #ifdef CONFIG_ARCH_OMAP1
1445 /* MPUIO uses the always-on 32k clock */
1447 static void mpuio_ack_irq(unsigned int irq
)
1449 /* The ISR is reset automatically, so do nothing here. */
1452 static void mpuio_mask_irq(unsigned int irq
)
1454 unsigned int gpio
= OMAP_MPUIO(irq
- IH_MPUIO_BASE
);
1455 struct gpio_bank
*bank
= get_irq_chip_data(irq
);
1457 _set_gpio_irqenable(bank
, gpio
, 0);
1460 static void mpuio_unmask_irq(unsigned int irq
)
1462 unsigned int gpio
= OMAP_MPUIO(irq
- IH_MPUIO_BASE
);
1463 struct gpio_bank
*bank
= get_irq_chip_data(irq
);
1465 _set_gpio_irqenable(bank
, gpio
, 1);
1468 static struct irq_chip mpuio_irq_chip
= {
1470 .ack
= mpuio_ack_irq
,
1471 .mask
= mpuio_mask_irq
,
1472 .unmask
= mpuio_unmask_irq
,
1473 .set_type
= gpio_irq_type
,
1474 #ifdef CONFIG_ARCH_OMAP16XX
1475 /* REVISIT: assuming only 16xx supports MPUIO wake events */
1476 .set_wake
= gpio_wake_enable
,
1481 #define bank_is_mpuio(bank) ((bank)->method == METHOD_MPUIO)
1484 #ifdef CONFIG_ARCH_OMAP16XX
1486 #include <linux/platform_device.h>
1488 static int omap_mpuio_suspend_noirq(struct device
*dev
)
1490 struct platform_device
*pdev
= to_platform_device(dev
);
1491 struct gpio_bank
*bank
= platform_get_drvdata(pdev
);
1492 void __iomem
*mask_reg
= bank
->base
+ OMAP_MPUIO_GPIO_MASKIT
;
1493 unsigned long flags
;
1495 spin_lock_irqsave(&bank
->lock
, flags
);
1496 bank
->saved_wakeup
= __raw_readl(mask_reg
);
1497 __raw_writel(0xffff & ~bank
->suspend_wakeup
, mask_reg
);
1498 spin_unlock_irqrestore(&bank
->lock
, flags
);
1503 static int omap_mpuio_resume_noirq(struct device
*dev
)
1505 struct platform_device
*pdev
= to_platform_device(dev
);
1506 struct gpio_bank
*bank
= platform_get_drvdata(pdev
);
1507 void __iomem
*mask_reg
= bank
->base
+ OMAP_MPUIO_GPIO_MASKIT
;
1508 unsigned long flags
;
1510 spin_lock_irqsave(&bank
->lock
, flags
);
1511 __raw_writel(bank
->saved_wakeup
, mask_reg
);
1512 spin_unlock_irqrestore(&bank
->lock
, flags
);
1517 static const struct dev_pm_ops omap_mpuio_dev_pm_ops
= {
1518 .suspend_noirq
= omap_mpuio_suspend_noirq
,
1519 .resume_noirq
= omap_mpuio_resume_noirq
,
1522 /* use platform_driver for this, now that there's no longer any
1523 * point to sys_device (other than not disturbing old code).
1525 static struct platform_driver omap_mpuio_driver
= {
1528 .pm
= &omap_mpuio_dev_pm_ops
,
1532 static struct platform_device omap_mpuio_device
= {
1536 .driver
= &omap_mpuio_driver
.driver
,
1538 /* could list the /proc/iomem resources */
1541 static inline void mpuio_init(void)
1543 platform_set_drvdata(&omap_mpuio_device
, &gpio_bank_1610
[0]);
1545 if (platform_driver_register(&omap_mpuio_driver
) == 0)
1546 (void) platform_device_register(&omap_mpuio_device
);
1550 static inline void mpuio_init(void) {}
1555 extern struct irq_chip mpuio_irq_chip
;
1557 #define bank_is_mpuio(bank) 0
1558 static inline void mpuio_init(void) {}
1562 /*---------------------------------------------------------------------*/
1564 /* REVISIT these are stupid implementations! replace by ones that
1565 * don't switch on METHOD_* and which mostly avoid spinlocks
1568 static int gpio_input(struct gpio_chip
*chip
, unsigned offset
)
1570 struct gpio_bank
*bank
;
1571 unsigned long flags
;
1573 bank
= container_of(chip
, struct gpio_bank
, chip
);
1574 spin_lock_irqsave(&bank
->lock
, flags
);
1575 _set_gpio_direction(bank
, offset
, 1);
1576 spin_unlock_irqrestore(&bank
->lock
, flags
);
1580 static int gpio_is_input(struct gpio_bank
*bank
, int mask
)
1582 void __iomem
*reg
= bank
->base
;
1584 switch (bank
->method
) {
1586 reg
+= OMAP_MPUIO_IO_CNTL
;
1588 case METHOD_GPIO_1510
:
1589 reg
+= OMAP1510_GPIO_DIR_CONTROL
;
1591 case METHOD_GPIO_1610
:
1592 reg
+= OMAP1610_GPIO_DIRECTION
;
1594 case METHOD_GPIO_7XX
:
1595 reg
+= OMAP7XX_GPIO_DIR_CONTROL
;
1597 case METHOD_GPIO_24XX
:
1598 reg
+= OMAP24XX_GPIO_OE
;
1600 case METHOD_GPIO_44XX
:
1601 reg
+= OMAP4_GPIO_OE
;
1604 WARN_ONCE(1, "gpio_is_input: incorrect OMAP GPIO method");
1607 return __raw_readl(reg
) & mask
;
1610 static int gpio_get(struct gpio_chip
*chip
, unsigned offset
)
1612 struct gpio_bank
*bank
;
1617 gpio
= chip
->base
+ offset
;
1618 bank
= get_gpio_bank(gpio
);
1620 mask
= 1 << get_gpio_index(gpio
);
1622 if (gpio_is_input(bank
, mask
))
1623 return _get_gpio_datain(bank
, gpio
);
1625 return _get_gpio_dataout(bank
, gpio
);
1628 static int gpio_output(struct gpio_chip
*chip
, unsigned offset
, int value
)
1630 struct gpio_bank
*bank
;
1631 unsigned long flags
;
1633 bank
= container_of(chip
, struct gpio_bank
, chip
);
1634 spin_lock_irqsave(&bank
->lock
, flags
);
1635 _set_gpio_dataout(bank
, offset
, value
);
1636 _set_gpio_direction(bank
, offset
, 0);
1637 spin_unlock_irqrestore(&bank
->lock
, flags
);
1641 static int gpio_debounce(struct gpio_chip
*chip
, unsigned offset
,
1644 struct gpio_bank
*bank
;
1645 unsigned long flags
;
1647 bank
= container_of(chip
, struct gpio_bank
, chip
);
1648 spin_lock_irqsave(&bank
->lock
, flags
);
1649 _set_gpio_debounce(bank
, offset
, debounce
);
1650 spin_unlock_irqrestore(&bank
->lock
, flags
);
1655 static void gpio_set(struct gpio_chip
*chip
, unsigned offset
, int value
)
1657 struct gpio_bank
*bank
;
1658 unsigned long flags
;
1660 bank
= container_of(chip
, struct gpio_bank
, chip
);
1661 spin_lock_irqsave(&bank
->lock
, flags
);
1662 _set_gpio_dataout(bank
, offset
, value
);
1663 spin_unlock_irqrestore(&bank
->lock
, flags
);
1666 static int gpio_2irq(struct gpio_chip
*chip
, unsigned offset
)
1668 struct gpio_bank
*bank
;
1670 bank
= container_of(chip
, struct gpio_bank
, chip
);
1671 return bank
->virtual_irq_start
+ offset
;
1674 /*---------------------------------------------------------------------*/
1676 static int initialized
;
1677 #if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2)
1678 static struct clk
* gpio_ick
;
1681 #if defined(CONFIG_ARCH_OMAP2)
1682 static struct clk
* gpio_fck
;
1685 #if defined(CONFIG_ARCH_OMAP2430)
1686 static struct clk
* gpio5_ick
;
1687 static struct clk
* gpio5_fck
;
1690 #if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
1691 static struct clk
*gpio_iclks
[OMAP34XX_NR_GPIOS
];
1694 static void __init
omap_gpio_show_rev(void)
1698 if (cpu_is_omap16xx())
1699 rev
= __raw_readw(gpio_bank
[1].base
+ OMAP1610_GPIO_REVISION
);
1700 else if (cpu_is_omap24xx() || cpu_is_omap34xx())
1701 rev
= __raw_readl(gpio_bank
[0].base
+ OMAP24XX_GPIO_REVISION
);
1702 else if (cpu_is_omap44xx())
1703 rev
= __raw_readl(gpio_bank
[0].base
+ OMAP4_GPIO_REVISION
);
1707 printk(KERN_INFO
"OMAP GPIO hardware version %d.%d\n",
1708 (rev
>> 4) & 0x0f, rev
& 0x0f);
1711 /* This lock class tells lockdep that GPIO irqs are in a different
1712 * category than their parents, so it won't report false recursion.
1714 static struct lock_class_key gpio_lock_class
;
1716 static int __init
_omap_gpio_init(void)
1720 struct gpio_bank
*bank
;
1721 int bank_size
= SZ_8K
; /* Module 4KB + L4 4KB except on omap1 */
1726 #if defined(CONFIG_ARCH_OMAP1)
1727 if (cpu_is_omap15xx()) {
1728 gpio_ick
= clk_get(NULL
, "arm_gpio_ck");
1729 if (IS_ERR(gpio_ick
))
1730 printk("Could not get arm_gpio_ck\n");
1732 clk_enable(gpio_ick
);
1735 #if defined(CONFIG_ARCH_OMAP2)
1736 if (cpu_class_is_omap2()) {
1737 gpio_ick
= clk_get(NULL
, "gpios_ick");
1738 if (IS_ERR(gpio_ick
))
1739 printk("Could not get gpios_ick\n");
1741 clk_enable(gpio_ick
);
1742 gpio_fck
= clk_get(NULL
, "gpios_fck");
1743 if (IS_ERR(gpio_fck
))
1744 printk("Could not get gpios_fck\n");
1746 clk_enable(gpio_fck
);
1749 * On 2430 & 3430 GPIO 5 uses CORE L4 ICLK
1751 #if defined(CONFIG_ARCH_OMAP2430)
1752 if (cpu_is_omap2430()) {
1753 gpio5_ick
= clk_get(NULL
, "gpio5_ick");
1754 if (IS_ERR(gpio5_ick
))
1755 printk("Could not get gpio5_ick\n");
1757 clk_enable(gpio5_ick
);
1758 gpio5_fck
= clk_get(NULL
, "gpio5_fck");
1759 if (IS_ERR(gpio5_fck
))
1760 printk("Could not get gpio5_fck\n");
1762 clk_enable(gpio5_fck
);
1768 #if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
1769 if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
1770 for (i
= 0; i
< OMAP34XX_NR_GPIOS
; i
++) {
1771 sprintf(clk_name
, "gpio%d_ick", i
+ 1);
1772 gpio_iclks
[i
] = clk_get(NULL
, clk_name
);
1773 if (IS_ERR(gpio_iclks
[i
]))
1774 printk(KERN_ERR
"Could not get %s\n", clk_name
);
1776 clk_enable(gpio_iclks
[i
]);
1782 #ifdef CONFIG_ARCH_OMAP15XX
1783 if (cpu_is_omap15xx()) {
1784 gpio_bank_count
= 2;
1785 gpio_bank
= gpio_bank_1510
;
1789 #if defined(CONFIG_ARCH_OMAP16XX)
1790 if (cpu_is_omap16xx()) {
1791 gpio_bank_count
= 5;
1792 gpio_bank
= gpio_bank_1610
;
1796 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
1797 if (cpu_is_omap7xx()) {
1798 gpio_bank_count
= 7;
1799 gpio_bank
= gpio_bank_7xx
;
1803 #ifdef CONFIG_ARCH_OMAP2
1804 if (cpu_is_omap242x()) {
1805 gpio_bank_count
= 4;
1806 gpio_bank
= gpio_bank_242x
;
1808 if (cpu_is_omap243x()) {
1809 gpio_bank_count
= 5;
1810 gpio_bank
= gpio_bank_243x
;
1813 #ifdef CONFIG_ARCH_OMAP3
1814 if (cpu_is_omap34xx()) {
1815 gpio_bank_count
= OMAP34XX_NR_GPIOS
;
1816 gpio_bank
= gpio_bank_34xx
;
1819 #ifdef CONFIG_ARCH_OMAP4
1820 if (cpu_is_omap44xx()) {
1821 gpio_bank_count
= OMAP34XX_NR_GPIOS
;
1822 gpio_bank
= gpio_bank_44xx
;
1825 for (i
= 0; i
< gpio_bank_count
; i
++) {
1826 int j
, gpio_count
= 16;
1828 bank
= &gpio_bank
[i
];
1829 spin_lock_init(&bank
->lock
);
1831 /* Static mapping, never released */
1832 bank
->base
= ioremap(bank
->pbase
, bank_size
);
1834 printk(KERN_ERR
"Could not ioremap gpio bank%i\n", i
);
1838 if (bank_is_mpuio(bank
))
1839 __raw_writew(0xffff, bank
->base
+ OMAP_MPUIO_GPIO_MASKIT
);
1840 if (cpu_is_omap15xx() && bank
->method
== METHOD_GPIO_1510
) {
1841 __raw_writew(0xffff, bank
->base
+ OMAP1510_GPIO_INT_MASK
);
1842 __raw_writew(0x0000, bank
->base
+ OMAP1510_GPIO_INT_STATUS
);
1844 if (cpu_is_omap16xx() && bank
->method
== METHOD_GPIO_1610
) {
1845 __raw_writew(0x0000, bank
->base
+ OMAP1610_GPIO_IRQENABLE1
);
1846 __raw_writew(0xffff, bank
->base
+ OMAP1610_GPIO_IRQSTATUS1
);
1847 __raw_writew(0x0014, bank
->base
+ OMAP1610_GPIO_SYSCONFIG
);
1849 if (cpu_is_omap7xx() && bank
->method
== METHOD_GPIO_7XX
) {
1850 __raw_writel(0xffffffff, bank
->base
+ OMAP7XX_GPIO_INT_MASK
);
1851 __raw_writel(0x00000000, bank
->base
+ OMAP7XX_GPIO_INT_STATUS
);
1853 gpio_count
= 32; /* 7xx has 32-bit GPIOs */
1856 #ifdef CONFIG_ARCH_OMAP2PLUS
1857 if ((bank
->method
== METHOD_GPIO_24XX
) ||
1858 (bank
->method
== METHOD_GPIO_44XX
)) {
1859 static const u32 non_wakeup_gpios
[] = {
1860 0xe203ffc0, 0x08700040
1863 if (cpu_is_omap44xx()) {
1864 __raw_writel(0xffffffff, bank
->base
+
1865 OMAP4_GPIO_IRQSTATUSCLR0
);
1866 __raw_writew(0x0015, bank
->base
+
1867 OMAP4_GPIO_SYSCONFIG
);
1868 __raw_writel(0x00000000, bank
->base
+
1869 OMAP4_GPIO_DEBOUNCENABLE
);
1871 * Initialize interface clock ungated,
1874 __raw_writel(0, bank
->base
+ OMAP4_GPIO_CTRL
);
1876 __raw_writel(0x00000000, bank
->base
+
1877 OMAP24XX_GPIO_IRQENABLE1
);
1878 __raw_writel(0xffffffff, bank
->base
+
1879 OMAP24XX_GPIO_IRQSTATUS1
);
1880 __raw_writew(0x0015, bank
->base
+
1881 OMAP24XX_GPIO_SYSCONFIG
);
1882 __raw_writel(0x00000000, bank
->base
+
1883 OMAP24XX_GPIO_DEBOUNCE_EN
);
1886 * Initialize interface clock ungated,
1889 __raw_writel(0, bank
->base
+
1890 OMAP24XX_GPIO_CTRL
);
1892 if (cpu_is_omap24xx() &&
1893 i
< ARRAY_SIZE(non_wakeup_gpios
))
1894 bank
->non_wakeup_gpios
= non_wakeup_gpios
[i
];
1899 bank
->mod_usage
= 0;
1900 /* REVISIT eventually switch from OMAP-specific gpio structs
1901 * over to the generic ones
1903 bank
->chip
.request
= omap_gpio_request
;
1904 bank
->chip
.free
= omap_gpio_free
;
1905 bank
->chip
.direction_input
= gpio_input
;
1906 bank
->chip
.get
= gpio_get
;
1907 bank
->chip
.direction_output
= gpio_output
;
1908 bank
->chip
.set_debounce
= gpio_debounce
;
1909 bank
->chip
.set
= gpio_set
;
1910 bank
->chip
.to_irq
= gpio_2irq
;
1911 if (bank_is_mpuio(bank
)) {
1912 bank
->chip
.label
= "mpuio";
1913 #ifdef CONFIG_ARCH_OMAP16XX
1914 bank
->chip
.dev
= &omap_mpuio_device
.dev
;
1916 bank
->chip
.base
= OMAP_MPUIO(0);
1918 bank
->chip
.label
= "gpio";
1919 bank
->chip
.base
= gpio
;
1922 bank
->chip
.ngpio
= gpio_count
;
1924 gpiochip_add(&bank
->chip
);
1926 for (j
= bank
->virtual_irq_start
;
1927 j
< bank
->virtual_irq_start
+ gpio_count
; j
++) {
1928 lockdep_set_class(&irq_desc
[j
].lock
, &gpio_lock_class
);
1929 set_irq_chip_data(j
, bank
);
1930 if (bank_is_mpuio(bank
))
1931 set_irq_chip(j
, &mpuio_irq_chip
);
1933 set_irq_chip(j
, &gpio_irq_chip
);
1934 set_irq_handler(j
, handle_simple_irq
);
1935 set_irq_flags(j
, IRQF_VALID
);
1937 set_irq_chained_handler(bank
->irq
, gpio_irq_handler
);
1938 set_irq_data(bank
->irq
, bank
);
1940 if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
1941 sprintf(clk_name
, "gpio%d_dbck", i
+ 1);
1942 bank
->dbck
= clk_get(NULL
, clk_name
);
1943 if (IS_ERR(bank
->dbck
))
1944 printk(KERN_ERR
"Could not get %s\n", clk_name
);
1948 /* Enable system clock for GPIO module.
1949 * The CAM_CLK_CTRL *is* really the right place. */
1950 if (cpu_is_omap16xx())
1951 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL
) | 0x04, ULPD_CAM_CLK_CTRL
);
1953 /* Enable autoidle for the OCP interface */
1954 if (cpu_is_omap24xx())
1955 omap_writel(1 << 0, 0x48019010);
1956 if (cpu_is_omap34xx())
1957 omap_writel(1 << 0, 0x48306814);
1959 omap_gpio_show_rev();
1964 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
1965 static int omap_gpio_suspend(struct sys_device
*dev
, pm_message_t mesg
)
1969 if (!cpu_class_is_omap2() && !cpu_is_omap16xx())
1972 for (i
= 0; i
< gpio_bank_count
; i
++) {
1973 struct gpio_bank
*bank
= &gpio_bank
[i
];
1974 void __iomem
*wake_status
;
1975 void __iomem
*wake_clear
;
1976 void __iomem
*wake_set
;
1977 unsigned long flags
;
1979 switch (bank
->method
) {
1980 #ifdef CONFIG_ARCH_OMAP16XX
1981 case METHOD_GPIO_1610
:
1982 wake_status
= bank
->base
+ OMAP1610_GPIO_WAKEUPENABLE
;
1983 wake_clear
= bank
->base
+ OMAP1610_GPIO_CLEAR_WAKEUPENA
;
1984 wake_set
= bank
->base
+ OMAP1610_GPIO_SET_WAKEUPENA
;
1987 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1988 case METHOD_GPIO_24XX
:
1989 wake_status
= bank
->base
+ OMAP24XX_GPIO_WAKE_EN
;
1990 wake_clear
= bank
->base
+ OMAP24XX_GPIO_CLEARWKUENA
;
1991 wake_set
= bank
->base
+ OMAP24XX_GPIO_SETWKUENA
;
1994 #ifdef CONFIG_ARCH_OMAP4
1995 case METHOD_GPIO_44XX
:
1996 wake_status
= bank
->base
+ OMAP4_GPIO_IRQWAKEN0
;
1997 wake_clear
= bank
->base
+ OMAP4_GPIO_IRQWAKEN0
;
1998 wake_set
= bank
->base
+ OMAP4_GPIO_IRQWAKEN0
;
2005 spin_lock_irqsave(&bank
->lock
, flags
);
2006 bank
->saved_wakeup
= __raw_readl(wake_status
);
2007 __raw_writel(0xffffffff, wake_clear
);
2008 __raw_writel(bank
->suspend_wakeup
, wake_set
);
2009 spin_unlock_irqrestore(&bank
->lock
, flags
);
2015 static int omap_gpio_resume(struct sys_device
*dev
)
2019 if (!cpu_class_is_omap2() && !cpu_is_omap16xx())
2022 for (i
= 0; i
< gpio_bank_count
; i
++) {
2023 struct gpio_bank
*bank
= &gpio_bank
[i
];
2024 void __iomem
*wake_clear
;
2025 void __iomem
*wake_set
;
2026 unsigned long flags
;
2028 switch (bank
->method
) {
2029 #ifdef CONFIG_ARCH_OMAP16XX
2030 case METHOD_GPIO_1610
:
2031 wake_clear
= bank
->base
+ OMAP1610_GPIO_CLEAR_WAKEUPENA
;
2032 wake_set
= bank
->base
+ OMAP1610_GPIO_SET_WAKEUPENA
;
2035 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
2036 case METHOD_GPIO_24XX
:
2037 wake_clear
= bank
->base
+ OMAP24XX_GPIO_CLEARWKUENA
;
2038 wake_set
= bank
->base
+ OMAP24XX_GPIO_SETWKUENA
;
2041 #ifdef CONFIG_ARCH_OMAP4
2042 case METHOD_GPIO_44XX
:
2043 wake_clear
= bank
->base
+ OMAP4_GPIO_IRQWAKEN0
;
2044 wake_set
= bank
->base
+ OMAP4_GPIO_IRQWAKEN0
;
2051 spin_lock_irqsave(&bank
->lock
, flags
);
2052 __raw_writel(0xffffffff, wake_clear
);
2053 __raw_writel(bank
->saved_wakeup
, wake_set
);
2054 spin_unlock_irqrestore(&bank
->lock
, flags
);
2060 static struct sysdev_class omap_gpio_sysclass
= {
2062 .suspend
= omap_gpio_suspend
,
2063 .resume
= omap_gpio_resume
,
2066 static struct sys_device omap_gpio_device
= {
2068 .cls
= &omap_gpio_sysclass
,
2073 #ifdef CONFIG_ARCH_OMAP2PLUS
2075 static int workaround_enabled
;
2077 void omap2_gpio_prepare_for_idle(int power_state
)
2082 if (cpu_is_omap34xx())
2085 for (i
= min
; i
< gpio_bank_count
; i
++) {
2086 struct gpio_bank
*bank
= &gpio_bank
[i
];
2090 for (j
= 0; j
< hweight_long(bank
->dbck_enable_mask
); j
++)
2091 clk_disable(bank
->dbck
);
2093 if (power_state
> PWRDM_POWER_OFF
)
2096 /* If going to OFF, remove triggering for all
2097 * non-wakeup GPIOs. Otherwise spurious IRQs will be
2098 * generated. See OMAP2420 Errata item 1.101. */
2099 if (!(bank
->enabled_non_wakeup_gpios
))
2102 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2103 bank
->saved_datain
= __raw_readl(bank
->base
+
2104 OMAP24XX_GPIO_DATAIN
);
2105 l1
= __raw_readl(bank
->base
+
2106 OMAP24XX_GPIO_FALLINGDETECT
);
2107 l2
= __raw_readl(bank
->base
+
2108 OMAP24XX_GPIO_RISINGDETECT
);
2111 if (cpu_is_omap44xx()) {
2112 bank
->saved_datain
= __raw_readl(bank
->base
+
2114 l1
= __raw_readl(bank
->base
+
2115 OMAP4_GPIO_FALLINGDETECT
);
2116 l2
= __raw_readl(bank
->base
+
2117 OMAP4_GPIO_RISINGDETECT
);
2120 bank
->saved_fallingdetect
= l1
;
2121 bank
->saved_risingdetect
= l2
;
2122 l1
&= ~bank
->enabled_non_wakeup_gpios
;
2123 l2
&= ~bank
->enabled_non_wakeup_gpios
;
2125 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2126 __raw_writel(l1
, bank
->base
+
2127 OMAP24XX_GPIO_FALLINGDETECT
);
2128 __raw_writel(l2
, bank
->base
+
2129 OMAP24XX_GPIO_RISINGDETECT
);
2132 if (cpu_is_omap44xx()) {
2133 __raw_writel(l1
, bank
->base
+ OMAP4_GPIO_FALLINGDETECT
);
2134 __raw_writel(l2
, bank
->base
+ OMAP4_GPIO_RISINGDETECT
);
2140 workaround_enabled
= 0;
2143 workaround_enabled
= 1;
2146 void omap2_gpio_resume_after_idle(void)
2151 if (cpu_is_omap34xx())
2153 for (i
= min
; i
< gpio_bank_count
; i
++) {
2154 struct gpio_bank
*bank
= &gpio_bank
[i
];
2155 u32 l
, gen
, gen0
, gen1
;
2158 for (j
= 0; j
< hweight_long(bank
->dbck_enable_mask
); j
++)
2159 clk_enable(bank
->dbck
);
2161 if (!workaround_enabled
)
2164 if (!(bank
->enabled_non_wakeup_gpios
))
2167 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2168 __raw_writel(bank
->saved_fallingdetect
,
2169 bank
->base
+ OMAP24XX_GPIO_FALLINGDETECT
);
2170 __raw_writel(bank
->saved_risingdetect
,
2171 bank
->base
+ OMAP24XX_GPIO_RISINGDETECT
);
2172 l
= __raw_readl(bank
->base
+ OMAP24XX_GPIO_DATAIN
);
2175 if (cpu_is_omap44xx()) {
2176 __raw_writel(bank
->saved_fallingdetect
,
2177 bank
->base
+ OMAP4_GPIO_FALLINGDETECT
);
2178 __raw_writel(bank
->saved_risingdetect
,
2179 bank
->base
+ OMAP4_GPIO_RISINGDETECT
);
2180 l
= __raw_readl(bank
->base
+ OMAP4_GPIO_DATAIN
);
2183 /* Check if any of the non-wakeup interrupt GPIOs have changed
2184 * state. If so, generate an IRQ by software. This is
2185 * horribly racy, but it's the best we can do to work around
2186 * this silicon bug. */
2187 l
^= bank
->saved_datain
;
2188 l
&= bank
->enabled_non_wakeup_gpios
;
2191 * No need to generate IRQs for the rising edge for gpio IRQs
2192 * configured with falling edge only; and vice versa.
2194 gen0
= l
& bank
->saved_fallingdetect
;
2195 gen0
&= bank
->saved_datain
;
2197 gen1
= l
& bank
->saved_risingdetect
;
2198 gen1
&= ~(bank
->saved_datain
);
2200 /* FIXME: Consider GPIO IRQs with level detections properly! */
2201 gen
= l
& (~(bank
->saved_fallingdetect
) &
2202 ~(bank
->saved_risingdetect
));
2203 /* Consider all GPIO IRQs needed to be updated */
2209 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2210 old0
= __raw_readl(bank
->base
+
2211 OMAP24XX_GPIO_LEVELDETECT0
);
2212 old1
= __raw_readl(bank
->base
+
2213 OMAP24XX_GPIO_LEVELDETECT1
);
2214 __raw_writel(old0
| gen
, bank
->base
+
2215 OMAP24XX_GPIO_LEVELDETECT0
);
2216 __raw_writel(old1
| gen
, bank
->base
+
2217 OMAP24XX_GPIO_LEVELDETECT1
);
2218 __raw_writel(old0
, bank
->base
+
2219 OMAP24XX_GPIO_LEVELDETECT0
);
2220 __raw_writel(old1
, bank
->base
+
2221 OMAP24XX_GPIO_LEVELDETECT1
);
2224 if (cpu_is_omap44xx()) {
2225 old0
= __raw_readl(bank
->base
+
2226 OMAP4_GPIO_LEVELDETECT0
);
2227 old1
= __raw_readl(bank
->base
+
2228 OMAP4_GPIO_LEVELDETECT1
);
2229 __raw_writel(old0
| l
, bank
->base
+
2230 OMAP4_GPIO_LEVELDETECT0
);
2231 __raw_writel(old1
| l
, bank
->base
+
2232 OMAP4_GPIO_LEVELDETECT1
);
2233 __raw_writel(old0
, bank
->base
+
2234 OMAP4_GPIO_LEVELDETECT0
);
2235 __raw_writel(old1
, bank
->base
+
2236 OMAP4_GPIO_LEVELDETECT1
);
2245 #ifdef CONFIG_ARCH_OMAP3
2246 /* save the registers of bank 2-6 */
2247 void omap_gpio_save_context(void)
2251 /* saving banks from 2-6 only since GPIO1 is in WKUP */
2252 for (i
= 1; i
< gpio_bank_count
; i
++) {
2253 struct gpio_bank
*bank
= &gpio_bank
[i
];
2254 gpio_context
[i
].sysconfig
=
2255 __raw_readl(bank
->base
+ OMAP24XX_GPIO_SYSCONFIG
);
2256 gpio_context
[i
].irqenable1
=
2257 __raw_readl(bank
->base
+ OMAP24XX_GPIO_IRQENABLE1
);
2258 gpio_context
[i
].irqenable2
=
2259 __raw_readl(bank
->base
+ OMAP24XX_GPIO_IRQENABLE2
);
2260 gpio_context
[i
].wake_en
=
2261 __raw_readl(bank
->base
+ OMAP24XX_GPIO_WAKE_EN
);
2262 gpio_context
[i
].ctrl
=
2263 __raw_readl(bank
->base
+ OMAP24XX_GPIO_CTRL
);
2264 gpio_context
[i
].oe
=
2265 __raw_readl(bank
->base
+ OMAP24XX_GPIO_OE
);
2266 gpio_context
[i
].leveldetect0
=
2267 __raw_readl(bank
->base
+ OMAP24XX_GPIO_LEVELDETECT0
);
2268 gpio_context
[i
].leveldetect1
=
2269 __raw_readl(bank
->base
+ OMAP24XX_GPIO_LEVELDETECT1
);
2270 gpio_context
[i
].risingdetect
=
2271 __raw_readl(bank
->base
+ OMAP24XX_GPIO_RISINGDETECT
);
2272 gpio_context
[i
].fallingdetect
=
2273 __raw_readl(bank
->base
+ OMAP24XX_GPIO_FALLINGDETECT
);
2274 gpio_context
[i
].dataout
=
2275 __raw_readl(bank
->base
+ OMAP24XX_GPIO_DATAOUT
);
2279 /* restore the required registers of bank 2-6 */
2280 void omap_gpio_restore_context(void)
2284 for (i
= 1; i
< gpio_bank_count
; i
++) {
2285 struct gpio_bank
*bank
= &gpio_bank
[i
];
2286 __raw_writel(gpio_context
[i
].sysconfig
,
2287 bank
->base
+ OMAP24XX_GPIO_SYSCONFIG
);
2288 __raw_writel(gpio_context
[i
].irqenable1
,
2289 bank
->base
+ OMAP24XX_GPIO_IRQENABLE1
);
2290 __raw_writel(gpio_context
[i
].irqenable2
,
2291 bank
->base
+ OMAP24XX_GPIO_IRQENABLE2
);
2292 __raw_writel(gpio_context
[i
].wake_en
,
2293 bank
->base
+ OMAP24XX_GPIO_WAKE_EN
);
2294 __raw_writel(gpio_context
[i
].ctrl
,
2295 bank
->base
+ OMAP24XX_GPIO_CTRL
);
2296 __raw_writel(gpio_context
[i
].oe
,
2297 bank
->base
+ OMAP24XX_GPIO_OE
);
2298 __raw_writel(gpio_context
[i
].leveldetect0
,
2299 bank
->base
+ OMAP24XX_GPIO_LEVELDETECT0
);
2300 __raw_writel(gpio_context
[i
].leveldetect1
,
2301 bank
->base
+ OMAP24XX_GPIO_LEVELDETECT1
);
2302 __raw_writel(gpio_context
[i
].risingdetect
,
2303 bank
->base
+ OMAP24XX_GPIO_RISINGDETECT
);
2304 __raw_writel(gpio_context
[i
].fallingdetect
,
2305 bank
->base
+ OMAP24XX_GPIO_FALLINGDETECT
);
2306 __raw_writel(gpio_context
[i
].dataout
,
2307 bank
->base
+ OMAP24XX_GPIO_DATAOUT
);
2313 * This may get called early from board specific init
2314 * for boards that have interrupts routed via FPGA.
2316 int __init
omap_gpio_init(void)
2319 return _omap_gpio_init();
2324 static int __init
omap_gpio_sysinit(void)
2329 ret
= _omap_gpio_init();
2333 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
2334 if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
2336 ret
= sysdev_class_register(&omap_gpio_sysclass
);
2338 ret
= sysdev_register(&omap_gpio_device
);
2346 arch_initcall(omap_gpio_sysinit
);