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OMAP: GPIO: Make omap_gpio_show_rev bank specific
[deliverable/linux.git] / arch / arm / plat-omap / gpio.c
CommitLineData
5e1c5ff4
TL		 1/*
2 * linux/arch/arm/plat-omap/gpio.c
3 *
4 * Support functions for OMAP GPIO
5 *
92105bb7 6 * Copyright (C) 2003-2005 Nokia Corporation
96de0e25 7 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
5e1c5ff4 8 *
44169075
SS		 9 * Copyright (C) 2009 Texas Instruments
10 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
11 *
5e1c5ff4
TL		 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.
15 */
16
5e1c5ff4
TL		 17#include <linux/init.h>
18#include <linux/module.h>
5e1c5ff4 19#include <linux/interrupt.h>
92105bb7
TL		 20#include <linux/sysdev.h>
21#include <linux/err.h>
f8ce2547 22#include <linux/clk.h>
fced80c7 23#include <linux/io.h>
5e1c5ff4 24
a09e64fb 25#include <mach/hardware.h>
5e1c5ff4 26#include <asm/irq.h>
a09e64fb
RK		 27#include <mach/irqs.h>
28#include <mach/gpio.h>
5e1c5ff4 29#include <asm/mach/irq.h>
43ffcd9a 30#include <plat/powerdomain.h>
5e1c5ff4 31
5e1c5ff4
TL		 32/*
33 * OMAP1510 GPIO registers
34 */
9f7065da 35#define OMAP1510_GPIO_BASE 0xfffce000
5e1c5ff4
TL		 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
43
44#define OMAP1510_IH_GPIO_BASE 64
45
46/*
47 * OMAP1610 specific GPIO registers
48 */
9f7065da
TL		 49#define OMAP1610_GPIO1_BASE 0xfffbe400
50#define OMAP1610_GPIO2_BASE 0xfffbec00
51#define OMAP1610_GPIO3_BASE 0xfffbb400
52#define OMAP1610_GPIO4_BASE 0xfffbbc00
5e1c5ff4
TL		 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
92105bb7 58#define OMAP1610_GPIO_WAKEUPENABLE 0x0028
5e1c5ff4
TL		 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
92105bb7 65#define OMAP1610_GPIO_CLEAR_WAKEUPENA 0x00a8
5e1c5ff4
TL		 66#define OMAP1610_GPIO_CLEAR_DATAOUT 0x00b0
67#define OMAP1610_GPIO_SET_IRQENABLE1 0x00dc
92105bb7 68#define OMAP1610_GPIO_SET_WAKEUPENA 0x00e8
5e1c5ff4
TL		 69#define OMAP1610_GPIO_SET_DATAOUT 0x00f0
70
71/*
7c006926 72 * OMAP7XX specific GPIO registers
5e1c5ff4 73 */
9f7065da
TL		 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
7c006926
AB		 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
5e1c5ff4 86
9f7065da 87#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
94113260 88
92105bb7
TL		 89/*
90 * omap24xx specific GPIO registers
91 */
9f7065da
TL		 92#define OMAP242X_GPIO1_BASE 0x48018000
93#define OMAP242X_GPIO2_BASE 0x4801a000
94#define OMAP242X_GPIO3_BASE 0x4801c000
95#define OMAP242X_GPIO4_BASE 0x4801e000
56a25641 96
9f7065da
TL		 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
56a25641 102
92105bb7
TL		 103#define OMAP24XX_GPIO_REVISION 0x0000
104#define OMAP24XX_GPIO_SYSCONFIG 0x0010
105#define OMAP24XX_GPIO_SYSSTATUS 0x0014
106#define OMAP24XX_GPIO_IRQSTATUS1 0x0018
bee7930f
HD		 107#define OMAP24XX_GPIO_IRQSTATUS2 0x0028
108#define OMAP24XX_GPIO_IRQENABLE2 0x002c
92105bb7 109#define OMAP24XX_GPIO_IRQENABLE1 0x001c
723fdb78 110#define OMAP24XX_GPIO_WAKE_EN 0x0020
92105bb7
TL		 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
5eb3bb9c
KH		 119#define OMAP24XX_GPIO_DEBOUNCE_EN 0x0050
120#define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0054
92105bb7
TL		 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
127
78a1a6d3
SR		 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
9f096868
C		 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
78a1a6d3
SR		 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
9f096868
C		 156#define OMAP4_GPIO_CLEARIRQENABLE1 0x0160
157#define OMAP4_GPIO_SETIRQENABLE1 0x0164
158#define OMAP4_GPIO_CLEARWKUENA 0x0180
159#define OMAP4_GPIO_SETWKUENA 0x0184
78a1a6d3
SR		 160#define OMAP4_GPIO_CLEARDATAOUT 0x0190
161#define OMAP4_GPIO_SETDATAOUT 0x0194
5492fb1a
SMK		 162/*
163 * omap34xx specific GPIO registers
164 */
165
9f7065da
TL		 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
5492fb1a 172
44169075
SS		 173/*
174 * OMAP44XX specific GPIO registers
175 */
9f7065da
TL		 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
5492fb1a 182
5e1c5ff4 183struct gpio_bank {
9f7065da 184 unsigned long pbase;
92105bb7 185 void __iomem *base;
5e1c5ff4
TL		 186 u16 irq;
187 u16 virtual_irq_start;
92105bb7 188 int method;
140455fa 189#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
92105bb7
TL		 190 u32 suspend_wakeup;
191 u32 saved_wakeup;
3ac4fa99 192#endif
3ac4fa99
JY		 193 u32 non_wakeup_gpios;
194 u32 enabled_non_wakeup_gpios;
195
196 u32 saved_datain;
197 u32 saved_fallingdetect;
198 u32 saved_risingdetect;
b144ff6f 199 u32 level_mask;
4318f36b 200 u32 toggle_mask;
5e1c5ff4 201 spinlock_t lock;
52e31344 202 struct gpio_chip chip;
89db9482 203 struct clk *dbck;
058af1ea 204 u32 mod_usage;
8865b9b6 205 u32 dbck_enable_mask;
5e1c5ff4
TL		 206};
207
208#define METHOD_MPUIO 0
209#define METHOD_GPIO_1510 1
210#define METHOD_GPIO_1610 2
7c006926 211#define METHOD_GPIO_7XX 3
56739a69 212#define METHOD_GPIO_24XX 5
3f1686a9 213#define METHOD_GPIO_44XX 6
5e1c5ff4 214
92105bb7 215#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4 216static struct gpio_bank gpio_bank_1610[5] = {
9f7065da
TL		 217 { OMAP1_MPUIO_VBASE, NULL, INT_MPUIO, IH_MPUIO_BASE,
218 METHOD_MPUIO },
219 { OMAP1610_GPIO1_BASE, NULL, INT_GPIO_BANK1, IH_GPIO_BASE,
220 METHOD_GPIO_1610 },
221 { OMAP1610_GPIO2_BASE, NULL, INT_1610_GPIO_BANK2, IH_GPIO_BASE + 16,
222 METHOD_GPIO_1610 },
223 { OMAP1610_GPIO3_BASE, NULL, INT_1610_GPIO_BANK3, IH_GPIO_BASE + 32,
224 METHOD_GPIO_1610 },
225 { OMAP1610_GPIO4_BASE, NULL, INT_1610_GPIO_BANK4, IH_GPIO_BASE + 48,
226 METHOD_GPIO_1610 },
5e1c5ff4
TL		 227};
228#endif
229
1a8bfa1e 230#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4 231static struct gpio_bank gpio_bank_1510[2] = {
9f7065da
TL		 232 { OMAP1_MPUIO_VBASE, NULL, INT_MPUIO, IH_MPUIO_BASE,
233 METHOD_MPUIO },
234 { OMAP1510_GPIO_BASE, NULL, INT_GPIO_BANK1, IH_GPIO_BASE,
235 METHOD_GPIO_1510 }
5e1c5ff4
TL		 236};
237#endif
238
b718aa81 239#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926 240static struct gpio_bank gpio_bank_7xx[7] = {
9f7065da
TL		 241 { OMAP1_MPUIO_VBASE, NULL, INT_7XX_MPUIO, IH_MPUIO_BASE,
242 METHOD_MPUIO },
243 { OMAP7XX_GPIO1_BASE, NULL, INT_7XX_GPIO_BANK1, IH_GPIO_BASE,
244 METHOD_GPIO_7XX },
245 { OMAP7XX_GPIO2_BASE, NULL, INT_7XX_GPIO_BANK2, IH_GPIO_BASE + 32,
246 METHOD_GPIO_7XX },
247 { OMAP7XX_GPIO3_BASE, NULL, INT_7XX_GPIO_BANK3, IH_GPIO_BASE + 64,
248 METHOD_GPIO_7XX },
249 { OMAP7XX_GPIO4_BASE, NULL, INT_7XX_GPIO_BANK4, IH_GPIO_BASE + 96,
250 METHOD_GPIO_7XX },
251 { OMAP7XX_GPIO5_BASE, NULL, INT_7XX_GPIO_BANK5, IH_GPIO_BASE + 128,
252 METHOD_GPIO_7XX },
253 { OMAP7XX_GPIO6_BASE, NULL, INT_7XX_GPIO_BANK6, IH_GPIO_BASE + 160,
254 METHOD_GPIO_7XX },
5e1c5ff4
TL		 255};
256#endif
257
088ef950 258#ifdef CONFIG_ARCH_OMAP2
56a25641
SMK		 259
260static struct gpio_bank gpio_bank_242x[4] = {
9f7065da
TL		 261 { OMAP242X_GPIO1_BASE, NULL, INT_24XX_GPIO_BANK1, IH_GPIO_BASE,
262 METHOD_GPIO_24XX },
263 { OMAP242X_GPIO2_BASE, NULL, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32,
264 METHOD_GPIO_24XX },
265 { OMAP242X_GPIO3_BASE, NULL, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64,
266 METHOD_GPIO_24XX },
267 { OMAP242X_GPIO4_BASE, NULL, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96,
268 METHOD_GPIO_24XX },
92105bb7 269};
56a25641
SMK		 270
271static struct gpio_bank gpio_bank_243x[5] = {
9f7065da
TL		 272 { OMAP243X_GPIO1_BASE, NULL, INT_24XX_GPIO_BANK1, IH_GPIO_BASE,
273 METHOD_GPIO_24XX },
274 { OMAP243X_GPIO2_BASE, NULL, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32,
275 METHOD_GPIO_24XX },
276 { OMAP243X_GPIO3_BASE, NULL, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64,
277 METHOD_GPIO_24XX },
278 { OMAP243X_GPIO4_BASE, NULL, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96,
279 METHOD_GPIO_24XX },
280 { OMAP243X_GPIO5_BASE, NULL, INT_24XX_GPIO_BANK5, IH_GPIO_BASE + 128,
281 METHOD_GPIO_24XX },
56a25641
SMK		 282};
283
92105bb7
TL		 284#endif
285
a8eb7ca0 286#ifdef CONFIG_ARCH_OMAP3
5492fb1a 287static struct gpio_bank gpio_bank_34xx[6] = {
9f7065da
TL		 288 { OMAP34XX_GPIO1_BASE, NULL, INT_34XX_GPIO_BANK1, IH_GPIO_BASE,
289 METHOD_GPIO_24XX },
290 { OMAP34XX_GPIO2_BASE, NULL, INT_34XX_GPIO_BANK2, IH_GPIO_BASE + 32,
291 METHOD_GPIO_24XX },
292 { OMAP34XX_GPIO3_BASE, NULL, INT_34XX_GPIO_BANK3, IH_GPIO_BASE + 64,
293 METHOD_GPIO_24XX },
294 { OMAP34XX_GPIO4_BASE, NULL, INT_34XX_GPIO_BANK4, IH_GPIO_BASE + 96,
295 METHOD_GPIO_24XX },
296 { OMAP34XX_GPIO5_BASE, NULL, INT_34XX_GPIO_BANK5, IH_GPIO_BASE + 128,
297 METHOD_GPIO_24XX },
298 { OMAP34XX_GPIO6_BASE, NULL, INT_34XX_GPIO_BANK6, IH_GPIO_BASE + 160,
299 METHOD_GPIO_24XX },
5492fb1a
SMK		 300};
301
40c670f0
RN		 302struct omap3_gpio_regs {
303 u32 sysconfig;
304 u32 irqenable1;
305 u32 irqenable2;
306 u32 wake_en;
307 u32 ctrl;
308 u32 oe;
309 u32 leveldetect0;
310 u32 leveldetect1;
311 u32 risingdetect;
312 u32 fallingdetect;
313 u32 dataout;
5492fb1a
SMK		 314};
315
40c670f0 316static struct omap3_gpio_regs gpio_context[OMAP34XX_NR_GPIOS];
5492fb1a
SMK		 317#endif
318
44169075
SS		 319#ifdef CONFIG_ARCH_OMAP4
320static struct gpio_bank gpio_bank_44xx[6] = {
5772ca7d 321 { OMAP44XX_GPIO1_BASE, NULL, OMAP44XX_IRQ_GPIO1, IH_GPIO_BASE,
3f1686a9 322 METHOD_GPIO_44XX },
5772ca7d 323 { OMAP44XX_GPIO2_BASE, NULL, OMAP44XX_IRQ_GPIO2, IH_GPIO_BASE + 32,
3f1686a9 324 METHOD_GPIO_44XX },
5772ca7d 325 { OMAP44XX_GPIO3_BASE, NULL, OMAP44XX_IRQ_GPIO3, IH_GPIO_BASE + 64,
3f1686a9 326 METHOD_GPIO_44XX },
5772ca7d 327 { OMAP44XX_GPIO4_BASE, NULL, OMAP44XX_IRQ_GPIO4, IH_GPIO_BASE + 96,
3f1686a9 328 METHOD_GPIO_44XX },
5772ca7d 329 { OMAP44XX_GPIO5_BASE, NULL, OMAP44XX_IRQ_GPIO5, IH_GPIO_BASE + 128,
3f1686a9 330 METHOD_GPIO_44XX },
5772ca7d 331 { OMAP44XX_GPIO6_BASE, NULL, OMAP44XX_IRQ_GPIO6, IH_GPIO_BASE + 160,
3f1686a9 332 METHOD_GPIO_44XX },
44169075
SS		 333};
334
335#endif
336
5e1c5ff4
TL		 337static struct gpio_bank *gpio_bank;
338static int gpio_bank_count;
339
340static inline struct gpio_bank *get_gpio_bank(int gpio)
341{
6e60e79a 342 if (cpu_is_omap15xx()) {
5e1c5ff4
TL		 343 if (OMAP_GPIO_IS_MPUIO(gpio))
344 return &gpio_bank[0];
345 return &gpio_bank[1];
346 }
5e1c5ff4
TL		 347 if (cpu_is_omap16xx()) {
348 if (OMAP_GPIO_IS_MPUIO(gpio))
349 return &gpio_bank[0];
350 return &gpio_bank[1 + (gpio >> 4)];
351 }
56739a69 352 if (cpu_is_omap7xx()) {
5e1c5ff4
TL		 353 if (OMAP_GPIO_IS_MPUIO(gpio))
354 return &gpio_bank[0];
355 return &gpio_bank[1 + (gpio >> 5)];
356 }
92105bb7
TL		 357 if (cpu_is_omap24xx())
358 return &gpio_bank[gpio >> 5];
44169075 359 if (cpu_is_omap34xx() || cpu_is_omap44xx())
5492fb1a 360 return &gpio_bank[gpio >> 5];
e031ab23
DB		 361 BUG();
362 return NULL;
5e1c5ff4
TL		 363}
364
365static inline int get_gpio_index(int gpio)
366{
56739a69 367 if (cpu_is_omap7xx())
5e1c5ff4 368 return gpio & 0x1f;
92105bb7
TL		 369 if (cpu_is_omap24xx())
370 return gpio & 0x1f;
44169075 371 if (cpu_is_omap34xx() || cpu_is_omap44xx())
5492fb1a 372 return gpio & 0x1f;
92105bb7 373 return gpio & 0x0f;
5e1c5ff4
TL		 374}
375
376static inline int gpio_valid(int gpio)
377{
378 if (gpio < 0)
379 return -1;
d11ac979 380 if (cpu_class_is_omap1() && OMAP_GPIO_IS_MPUIO(gpio)) {
193e68be 381 if (gpio >= OMAP_MAX_GPIO_LINES + 16)
5e1c5ff4
TL		 382 return -1;
383 return 0;
384 }
6e60e79a 385 if (cpu_is_omap15xx() && gpio < 16)
5e1c5ff4 386 return 0;
5e1c5ff4
TL		 387 if ((cpu_is_omap16xx()) && gpio < 64)
388 return 0;
56739a69 389 if (cpu_is_omap7xx() && gpio < 192)
5e1c5ff4 390 return 0;
25d6f630
TL		 391 if (cpu_is_omap2420() && gpio < 128)
392 return 0;
393 if (cpu_is_omap2430() && gpio < 160)
92105bb7 394 return 0;
44169075 395 if ((cpu_is_omap34xx() || cpu_is_omap44xx()) && gpio < 192)
5492fb1a 396 return 0;
5e1c5ff4
TL		 397 return -1;
398}
399
400static int check_gpio(int gpio)
401{
d32b20fc 402 if (unlikely(gpio_valid(gpio) < 0)) {
5e1c5ff4
TL		 403 printk(KERN_ERR "omap-gpio: invalid GPIO %d\n", gpio);
404 dump_stack();
405 return -1;
406 }
407 return 0;
408}
409
410static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
411{
92105bb7 412 void __iomem *reg = bank->base;
5e1c5ff4
TL		 413 u32 l;
414
415 switch (bank->method) {
e5c56ed3 416#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 417 case METHOD_MPUIO:
418 reg += OMAP_MPUIO_IO_CNTL;
419 break;
e5c56ed3
DB		 420#endif
421#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 422 case METHOD_GPIO_1510:
423 reg += OMAP1510_GPIO_DIR_CONTROL;
424 break;
e5c56ed3
DB		 425#endif
426#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4
TL		 427 case METHOD_GPIO_1610:
428 reg += OMAP1610_GPIO_DIRECTION;
429 break;
e5c56ed3 430#endif
b718aa81 431#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 432 case METHOD_GPIO_7XX:
433 reg += OMAP7XX_GPIO_DIR_CONTROL;
56739a69
ZM		 434 break;
435#endif
a8eb7ca0 436#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7
TL		 437 case METHOD_GPIO_24XX:
438 reg += OMAP24XX_GPIO_OE;
439 break;
78a1a6d3
SR		 440#endif
441#if defined(CONFIG_ARCH_OMAP4)
3f1686a9 442 case METHOD_GPIO_44XX:
78a1a6d3
SR		 443 reg += OMAP4_GPIO_OE;
444 break;
e5c56ed3
DB		 445#endif
446 default:
447 WARN_ON(1);
448 return;
5e1c5ff4
TL		 449 }
450 l = __raw_readl(reg);
451 if (is_input)
452 l |= 1 << gpio;
453 else
454 l &= ~(1 << gpio);
455 __raw_writel(l, reg);
456}
457
5e1c5ff4
TL		 458static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
459{
92105bb7 460 void __iomem *reg = bank->base;
5e1c5ff4
TL		 461 u32 l = 0;
462
463 switch (bank->method) {
e5c56ed3 464#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 465 case METHOD_MPUIO:
466 reg += OMAP_MPUIO_OUTPUT;
467 l = __raw_readl(reg);
468 if (enable)
469 l |= 1 << gpio;
470 else
471 l &= ~(1 << gpio);
472 break;
e5c56ed3
DB		 473#endif
474#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 475 case METHOD_GPIO_1510:
476 reg += OMAP1510_GPIO_DATA_OUTPUT;
477 l = __raw_readl(reg);
478 if (enable)
479 l |= 1 << gpio;
480 else
481 l &= ~(1 << gpio);
482 break;
e5c56ed3
DB		 483#endif
484#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4
TL		 485 case METHOD_GPIO_1610:
486 if (enable)
487 reg += OMAP1610_GPIO_SET_DATAOUT;
488 else
489 reg += OMAP1610_GPIO_CLEAR_DATAOUT;
490 l = 1 << gpio;
491 break;
e5c56ed3 492#endif
b718aa81 493#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 494 case METHOD_GPIO_7XX:
495 reg += OMAP7XX_GPIO_DATA_OUTPUT;
56739a69
ZM		 496 l = __raw_readl(reg);
497 if (enable)
498 l |= 1 << gpio;
499 else
500 l &= ~(1 << gpio);
501 break;
502#endif
a8eb7ca0 503#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7
TL		 504 case METHOD_GPIO_24XX:
505 if (enable)
506 reg += OMAP24XX_GPIO_SETDATAOUT;
507 else
508 reg += OMAP24XX_GPIO_CLEARDATAOUT;
509 l = 1 << gpio;
510 break;
78a1a6d3
SR		 511#endif
512#ifdef CONFIG_ARCH_OMAP4
3f1686a9 513 case METHOD_GPIO_44XX:
78a1a6d3
SR		 514 if (enable)
515 reg += OMAP4_GPIO_SETDATAOUT;
516 else
517 reg += OMAP4_GPIO_CLEARDATAOUT;
518 l = 1 << gpio;
519 break;
e5c56ed3 520#endif
5e1c5ff4 521 default:
e5c56ed3 522 WARN_ON(1);
5e1c5ff4
TL		 523 return;
524 }
525 __raw_writel(l, reg);
526}
527
b37c45b8 528static int _get_gpio_datain(struct gpio_bank *bank, int gpio)
5e1c5ff4 529{
92105bb7 530 void __iomem *reg;
5e1c5ff4
TL		 531
532 if (check_gpio(gpio) < 0)
e5c56ed3 533 return -EINVAL;
5e1c5ff4
TL		 534 reg = bank->base;
535 switch (bank->method) {
e5c56ed3 536#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 537 case METHOD_MPUIO:
538 reg += OMAP_MPUIO_INPUT_LATCH;
539 break;
e5c56ed3
DB		 540#endif
541#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 542 case METHOD_GPIO_1510:
543 reg += OMAP1510_GPIO_DATA_INPUT;
544 break;
e5c56ed3
DB		 545#endif
546#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4
TL		 547 case METHOD_GPIO_1610:
548 reg += OMAP1610_GPIO_DATAIN;
549 break;
e5c56ed3 550#endif
b718aa81 551#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 552 case METHOD_GPIO_7XX:
553 reg += OMAP7XX_GPIO_DATA_INPUT;
56739a69
ZM		 554 break;
555#endif
a8eb7ca0 556#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7
TL		 557 case METHOD_GPIO_24XX:
558 reg += OMAP24XX_GPIO_DATAIN;
559 break;
78a1a6d3
SR		 560#endif
561#ifdef CONFIG_ARCH_OMAP4
3f1686a9 562 case METHOD_GPIO_44XX:
78a1a6d3
SR		 563 reg += OMAP4_GPIO_DATAIN;
564 break;
e5c56ed3 565#endif
5e1c5ff4 566 default:
e5c56ed3 567 return -EINVAL;
5e1c5ff4 568 }
92105bb7
TL		 569 return (__raw_readl(reg)
570 & (1 << get_gpio_index(gpio))) != 0;
5e1c5ff4
TL		 571}
572
b37c45b8
RQ		 573static int _get_gpio_dataout(struct gpio_bank *bank, int gpio)
574{
575 void __iomem *reg;
576
577 if (check_gpio(gpio) < 0)
578 return -EINVAL;
579 reg = bank->base;
580
581 switch (bank->method) {
582#ifdef CONFIG_ARCH_OMAP1
583 case METHOD_MPUIO:
584 reg += OMAP_MPUIO_OUTPUT;
585 break;
586#endif
587#ifdef CONFIG_ARCH_OMAP15XX
588 case METHOD_GPIO_1510:
589 reg += OMAP1510_GPIO_DATA_OUTPUT;
590 break;
591#endif
592#ifdef CONFIG_ARCH_OMAP16XX
593 case METHOD_GPIO_1610:
594 reg += OMAP1610_GPIO_DATAOUT;
595 break;
596#endif
b718aa81 597#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 598 case METHOD_GPIO_7XX:
599 reg += OMAP7XX_GPIO_DATA_OUTPUT;
b37c45b8
RQ		 600 break;
601#endif
9f096868 602#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
b37c45b8
RQ		 603 case METHOD_GPIO_24XX:
604 reg += OMAP24XX_GPIO_DATAOUT;
605 break;
9f096868
C		 606#endif
607#ifdef CONFIG_ARCH_OMAP4
608 case METHOD_GPIO_44XX:
609 reg += OMAP4_GPIO_DATAOUT;
610 break;
b37c45b8
RQ		 611#endif
612 default:
613 return -EINVAL;
614 }
615
616 return (__raw_readl(reg) & (1 << get_gpio_index(gpio))) != 0;
617}
618
92105bb7
TL		 619#define MOD_REG_BIT(reg, bit_mask, set) \
620do { \
621 int l = __raw_readl(base + reg); \
622 if (set) l |= bit_mask; \
623 else l &= ~bit_mask; \
624 __raw_writel(l, base + reg); \
625} while(0)
626
168ef3d9
FB		 627/**
628 * _set_gpio_debounce - low level gpio debounce time
629 * @bank: the gpio bank we're acting upon
630 * @gpio: the gpio number on this @gpio
631 * @debounce: debounce time to use
632 *
633 * OMAP's debounce time is in 31us steps so we need
634 * to convert and round up to the closest unit.
635 */
636static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
637 unsigned debounce)
638{
639 void __iomem *reg = bank->base;
640 u32 val;
641 u32 l;
642
643 if (debounce < 32)
644 debounce = 0x01;
645 else if (debounce > 7936)
646 debounce = 0xff;
647 else
648 debounce = (debounce / 0x1f) - 1;
649
650 l = 1 << get_gpio_index(gpio);
651
652 if (cpu_is_omap44xx())
653 reg += OMAP4_GPIO_DEBOUNCINGTIME;
654 else
655 reg += OMAP24XX_GPIO_DEBOUNCE_VAL;
656
657 __raw_writel(debounce, reg);
658
659 reg = bank->base;
660 if (cpu_is_omap44xx())
661 reg += OMAP4_GPIO_DEBOUNCENABLE;
662 else
663 reg += OMAP24XX_GPIO_DEBOUNCE_EN;
664
665 val = __raw_readl(reg);
666
667 if (debounce) {
668 val |= l;
669 if (cpu_is_omap34xx() || cpu_is_omap44xx())
670 clk_enable(bank->dbck);
671 } else {
672 val &= ~l;
673 if (cpu_is_omap34xx() || cpu_is_omap44xx())
674 clk_disable(bank->dbck);
675 }
f7ec0b0b 676 bank->dbck_enable_mask = val;
168ef3d9
FB		 677
678 __raw_writel(val, reg);
679}
680
140455fa 681#ifdef CONFIG_ARCH_OMAP2PLUS
5eb3bb9c
KH		 682static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio,
683 int trigger)
5e1c5ff4 684{
3ac4fa99 685 void __iomem *base = bank->base;
92105bb7 686 u32 gpio_bit = 1 << gpio;
78a1a6d3 687 u32 val;
92105bb7 688
78a1a6d3
SR		 689 if (cpu_is_omap44xx()) {
690 MOD_REG_BIT(OMAP4_GPIO_LEVELDETECT0, gpio_bit,
691 trigger & IRQ_TYPE_LEVEL_LOW);
692 MOD_REG_BIT(OMAP4_GPIO_LEVELDETECT1, gpio_bit,
693 trigger & IRQ_TYPE_LEVEL_HIGH);
694 MOD_REG_BIT(OMAP4_GPIO_RISINGDETECT, gpio_bit,
695 trigger & IRQ_TYPE_EDGE_RISING);
696 MOD_REG_BIT(OMAP4_GPIO_FALLINGDETECT, gpio_bit,
697 trigger & IRQ_TYPE_EDGE_FALLING);
698 } else {
699 MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT0, gpio_bit,
700 trigger & IRQ_TYPE_LEVEL_LOW);
701 MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT1, gpio_bit,
702 trigger & IRQ_TYPE_LEVEL_HIGH);
703 MOD_REG_BIT(OMAP24XX_GPIO_RISINGDETECT, gpio_bit,
704 trigger & IRQ_TYPE_EDGE_RISING);
705 MOD_REG_BIT(OMAP24XX_GPIO_FALLINGDETECT, gpio_bit,
706 trigger & IRQ_TYPE_EDGE_FALLING);
707 }
3ac4fa99 708 if (likely(!(bank->non_wakeup_gpios & gpio_bit))) {
78a1a6d3
SR		 709 if (cpu_is_omap44xx()) {
710 if (trigger != 0)
711 __raw_writel(1 << gpio, bank->base+
712 OMAP4_GPIO_IRQWAKEN0);
713 else {
714 val = __raw_readl(bank->base +
715 OMAP4_GPIO_IRQWAKEN0);
716 __raw_writel(val & (~(1 << gpio)), bank->base +
717 OMAP4_GPIO_IRQWAKEN0);
718 }
719 } else {
699117a6
CW		 720 /*
721 * GPIO wakeup request can only be generated on edge
722 * transitions
723 */
724 if (trigger & IRQ_TYPE_EDGE_BOTH)
78a1a6d3 725 __raw_writel(1 << gpio, bank->base
5eb3bb9c 726 + OMAP24XX_GPIO_SETWKUENA);
78a1a6d3
SR		 727 else
728 __raw_writel(1 << gpio, bank->base
5eb3bb9c 729 + OMAP24XX_GPIO_CLEARWKUENA);
78a1a6d3 730 }
a118b5f3
TK		 731 }
732 /* This part needs to be executed always for OMAP34xx */
733 if (cpu_is_omap34xx() || (bank->non_wakeup_gpios & gpio_bit)) {
699117a6
CW		 734 /*
735 * Log the edge gpio and manually trigger the IRQ
736 * after resume if the input level changes
737 * to avoid irq lost during PER RET/OFF mode
738 * Applies for omap2 non-wakeup gpio and all omap3 gpios
739 */
740 if (trigger & IRQ_TYPE_EDGE_BOTH)
3ac4fa99
JY		 741 bank->enabled_non_wakeup_gpios |= gpio_bit;
742 else
743 bank->enabled_non_wakeup_gpios &= ~gpio_bit;
744 }
5eb3bb9c 745
78a1a6d3
SR		 746 if (cpu_is_omap44xx()) {
747 bank->level_mask =
748 __raw_readl(bank->base + OMAP4_GPIO_LEVELDETECT0) |
749 __raw_readl(bank->base + OMAP4_GPIO_LEVELDETECT1);
750 } else {
751 bank->level_mask =
752 __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0) |
753 __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
754 }
92105bb7 755}
3ac4fa99 756#endif
92105bb7 757
9198bcd3 758#ifdef CONFIG_ARCH_OMAP1
4318f36b
CM		 759/*
760 * This only applies to chips that can't do both rising and falling edge
761 * detection at once. For all other chips, this function is a noop.
762 */
763static void _toggle_gpio_edge_triggering(struct gpio_bank *bank, int gpio)
764{
765 void __iomem *reg = bank->base;
766 u32 l = 0;
767
768 switch (bank->method) {
4318f36b
CM		 769 case METHOD_MPUIO:
770 reg += OMAP_MPUIO_GPIO_INT_EDGE;
771 break;
4318f36b
CM		 772#ifdef CONFIG_ARCH_OMAP15XX
773 case METHOD_GPIO_1510:
774 reg += OMAP1510_GPIO_INT_CONTROL;
775 break;
776#endif
777#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
778 case METHOD_GPIO_7XX:
779 reg += OMAP7XX_GPIO_INT_CONTROL;
780 break;
781#endif
782 default:
783 return;
784 }
785
786 l = __raw_readl(reg);
787 if ((l >> gpio) & 1)
788 l &= ~(1 << gpio);
789 else
790 l |= 1 << gpio;
791
792 __raw_writel(l, reg);
793}
9198bcd3 794#endif
4318f36b 795
92105bb7
TL		 796static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger)
797{
798 void __iomem *reg = bank->base;
799 u32 l = 0;
5e1c5ff4
TL		 800
801 switch (bank->method) {
e5c56ed3 802#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 803 case METHOD_MPUIO:
804 reg += OMAP_MPUIO_GPIO_INT_EDGE;
805 l = __raw_readl(reg);
29501577 806 if ((trigger & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH)
4318f36b 807 bank->toggle_mask |= 1 << gpio;
6cab4860 808 if (trigger & IRQ_TYPE_EDGE_RISING)
5e1c5ff4 809 l |= 1 << gpio;
6cab4860 810 else if (trigger & IRQ_TYPE_EDGE_FALLING)
5e1c5ff4 811 l &= ~(1 << gpio);
92105bb7
TL		 812 else
813 goto bad;
5e1c5ff4 814 break;
e5c56ed3
DB		 815#endif
816#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 817 case METHOD_GPIO_1510:
818 reg += OMAP1510_GPIO_INT_CONTROL;
819 l = __raw_readl(reg);
29501577 820 if ((trigger & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH)
4318f36b 821 bank->toggle_mask |= 1 << gpio;
6cab4860 822 if (trigger & IRQ_TYPE_EDGE_RISING)
5e1c5ff4 823 l |= 1 << gpio;
6cab4860 824 else if (trigger & IRQ_TYPE_EDGE_FALLING)
5e1c5ff4 825 l &= ~(1 << gpio);
92105bb7
TL		 826 else
827 goto bad;
5e1c5ff4 828 break;
e5c56ed3 829#endif
3ac4fa99 830#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4 831 case METHOD_GPIO_1610:
5e1c5ff4
TL		 832 if (gpio & 0x08)
833 reg += OMAP1610_GPIO_EDGE_CTRL2;
834 else
835 reg += OMAP1610_GPIO_EDGE_CTRL1;
836 gpio &= 0x07;
837 l = __raw_readl(reg);
838 l &= ~(3 << (gpio << 1));
6cab4860 839 if (trigger & IRQ_TYPE_EDGE_RISING)
6e60e79a 840 l |= 2 << (gpio << 1);
6cab4860 841 if (trigger & IRQ_TYPE_EDGE_FALLING)
6e60e79a 842 l |= 1 << (gpio << 1);
3ac4fa99
JY		 843 if (trigger)
844 /* Enable wake-up during idle for dynamic tick */
845 __raw_writel(1 << gpio, bank->base + OMAP1610_GPIO_SET_WAKEUPENA);
846 else
847 __raw_writel(1 << gpio, bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA);
5e1c5ff4 848 break;
3ac4fa99 849#endif
b718aa81 850#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 851 case METHOD_GPIO_7XX:
852 reg += OMAP7XX_GPIO_INT_CONTROL;
56739a69 853 l = __raw_readl(reg);
29501577 854 if ((trigger & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH)
4318f36b 855 bank->toggle_mask |= 1 << gpio;
56739a69
ZM		 856 if (trigger & IRQ_TYPE_EDGE_RISING)
857 l |= 1 << gpio;
858 else if (trigger & IRQ_TYPE_EDGE_FALLING)
859 l &= ~(1 << gpio);
860 else
861 goto bad;
862 break;
863#endif
140455fa 864#ifdef CONFIG_ARCH_OMAP2PLUS
92105bb7 865 case METHOD_GPIO_24XX:
3f1686a9 866 case METHOD_GPIO_44XX:
3ac4fa99 867 set_24xx_gpio_triggering(bank, gpio, trigger);
5e1c5ff4 868 break;
3ac4fa99 869#endif
5e1c5ff4 870 default:
92105bb7 871 goto bad;
5e1c5ff4 872 }
92105bb7
TL		 873 __raw_writel(l, reg);
874 return 0;
875bad:
876 return -EINVAL;
5e1c5ff4
TL		 877}
878
92105bb7 879static int gpio_irq_type(unsigned irq, unsigned type)
5e1c5ff4
TL		 880{
881 struct gpio_bank *bank;
92105bb7
TL		 882 unsigned gpio;
883 int retval;
a6472533 884 unsigned long flags;
92105bb7 885
5492fb1a 886 if (!cpu_class_is_omap2() && irq > IH_MPUIO_BASE)
92105bb7
TL		 887 gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE);
888 else
889 gpio = irq - IH_GPIO_BASE;
5e1c5ff4
TL		 890
891 if (check_gpio(gpio) < 0)
92105bb7
TL		 892 return -EINVAL;
893
e5c56ed3 894 if (type & ~IRQ_TYPE_SENSE_MASK)
6e60e79a 895 return -EINVAL;
e5c56ed3
DB		 896
897 /* OMAP1 allows only only edge triggering */
5492fb1a 898 if (!cpu_class_is_omap2()
e5c56ed3 899 && (type & (IRQ_TYPE_LEVEL_LOW|IRQ_TYPE_LEVEL_HIGH)))
92105bb7
TL		 900 return -EINVAL;
901
58781016 902 bank = get_irq_chip_data(irq);
a6472533 903 spin_lock_irqsave(&bank->lock, flags);
92105bb7 904 retval = _set_gpio_triggering(bank, get_gpio_index(gpio), type);
b9772a22
DB		 905 if (retval == 0) {
906 irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK;
907 irq_desc[irq].status |= type;
908 }
a6472533 909 spin_unlock_irqrestore(&bank->lock, flags);
672e302e
KH		 910
911 if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
912 __set_irq_handler_unlocked(irq, handle_level_irq);
913 else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
914 __set_irq_handler_unlocked(irq, handle_edge_irq);
915
92105bb7 916 return retval;
5e1c5ff4
TL		 917}
918
919static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
920{
92105bb7 921 void __iomem *reg = bank->base;
5e1c5ff4
TL		 922
923 switch (bank->method) {
e5c56ed3 924#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 925 case METHOD_MPUIO:
926 /* MPUIO irqstatus is reset by reading the status register,
927 * so do nothing here */
928 return;
e5c56ed3
DB		 929#endif
930#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 931 case METHOD_GPIO_1510:
932 reg += OMAP1510_GPIO_INT_STATUS;
933 break;
e5c56ed3
DB		 934#endif
935#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4
TL		 936 case METHOD_GPIO_1610:
937 reg += OMAP1610_GPIO_IRQSTATUS1;
938 break;
e5c56ed3 939#endif
b718aa81 940#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 941 case METHOD_GPIO_7XX:
942 reg += OMAP7XX_GPIO_INT_STATUS;
56739a69
ZM		 943 break;
944#endif
a8eb7ca0 945#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7
TL		 946 case METHOD_GPIO_24XX:
947 reg += OMAP24XX_GPIO_IRQSTATUS1;
948 break;
78a1a6d3
SR		 949#endif
950#if defined(CONFIG_ARCH_OMAP4)
3f1686a9 951 case METHOD_GPIO_44XX:
78a1a6d3
SR		 952 reg += OMAP4_GPIO_IRQSTATUS0;
953 break;
e5c56ed3 954#endif
5e1c5ff4 955 default:
e5c56ed3 956 WARN_ON(1);
5e1c5ff4
TL		 957 return;
958 }
959 __raw_writel(gpio_mask, reg);
bee7930f
HD		 960
961 /* Workaround for clearing DSP GPIO interrupts to allow retention */
3f1686a9
TL		 962 if (cpu_is_omap24xx() || cpu_is_omap34xx())
963 reg = bank->base + OMAP24XX_GPIO_IRQSTATUS2;
964 else if (cpu_is_omap44xx())
965 reg = bank->base + OMAP4_GPIO_IRQSTATUS1;
966
78a1a6d3 967 if (cpu_is_omap24xx() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
bedfd154
RQ		 968 __raw_writel(gpio_mask, reg);
969
970 /* Flush posted write for the irq status to avoid spurious interrupts */
971 __raw_readl(reg);
78a1a6d3 972 }
5e1c5ff4
TL		 973}
974
975static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio)
976{
977 _clear_gpio_irqbank(bank, 1 << get_gpio_index(gpio));
978}
979
ea6dedd7
ID		 980static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
981{
982 void __iomem *reg = bank->base;
99c47707
ID		 983 int inv = 0;
984 u32 l;
985 u32 mask;
ea6dedd7
ID		 986
987 switch (bank->method) {
e5c56ed3 988#ifdef CONFIG_ARCH_OMAP1
ea6dedd7
ID		 989 case METHOD_MPUIO:
990 reg += OMAP_MPUIO_GPIO_MASKIT;
99c47707
ID		 991 mask = 0xffff;
992 inv = 1;
ea6dedd7 993 break;
e5c56ed3
DB		 994#endif
995#ifdef CONFIG_ARCH_OMAP15XX
ea6dedd7
ID		 996 case METHOD_GPIO_1510:
997 reg += OMAP1510_GPIO_INT_MASK;
99c47707
ID		 998 mask = 0xffff;
999 inv = 1;
ea6dedd7 1000 break;
e5c56ed3
DB		 1001#endif
1002#ifdef CONFIG_ARCH_OMAP16XX
ea6dedd7
ID		 1003 case METHOD_GPIO_1610:
1004 reg += OMAP1610_GPIO_IRQENABLE1;
99c47707 1005 mask = 0xffff;
ea6dedd7 1006 break;
e5c56ed3 1007#endif
b718aa81 1008#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 1009 case METHOD_GPIO_7XX:
1010 reg += OMAP7XX_GPIO_INT_MASK;
56739a69
ZM		 1011 mask = 0xffffffff;
1012 inv = 1;
1013 break;
1014#endif
a8eb7ca0 1015#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
ea6dedd7
ID		 1016 case METHOD_GPIO_24XX:
1017 reg += OMAP24XX_GPIO_IRQENABLE1;
99c47707 1018 mask = 0xffffffff;
ea6dedd7 1019 break;
78a1a6d3
SR		 1020#endif
1021#if defined(CONFIG_ARCH_OMAP4)
3f1686a9 1022 case METHOD_GPIO_44XX:
78a1a6d3
SR		 1023 reg += OMAP4_GPIO_IRQSTATUSSET0;
1024 mask = 0xffffffff;
1025 break;
e5c56ed3 1026#endif
ea6dedd7 1027 default:
e5c56ed3 1028 WARN_ON(1);
ea6dedd7
ID		 1029 return 0;
1030 }
1031
99c47707
ID		 1032 l = __raw_readl(reg);
1033 if (inv)
1034 l = ~l;
1035 l &= mask;
1036 return l;
ea6dedd7
ID		 1037}
1038
5e1c5ff4
TL		 1039static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enable)
1040{
92105bb7 1041 void __iomem *reg = bank->base;
5e1c5ff4
TL		 1042 u32 l;
1043
1044 switch (bank->method) {
e5c56ed3 1045#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 1046 case METHOD_MPUIO:
1047 reg += OMAP_MPUIO_GPIO_MASKIT;
1048 l = __raw_readl(reg);
1049 if (enable)
1050 l &= ~(gpio_mask);
1051 else
1052 l |= gpio_mask;
1053 break;
e5c56ed3
DB		 1054#endif
1055#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 1056 case METHOD_GPIO_1510:
1057 reg += OMAP1510_GPIO_INT_MASK;
1058 l = __raw_readl(reg);
1059 if (enable)
1060 l &= ~(gpio_mask);
1061 else
1062 l |= gpio_mask;
1063 break;
e5c56ed3
DB		 1064#endif
1065#ifdef CONFIG_ARCH_OMAP16XX
5e1c5ff4
TL		 1066 case METHOD_GPIO_1610:
1067 if (enable)
1068 reg += OMAP1610_GPIO_SET_IRQENABLE1;
1069 else
1070 reg += OMAP1610_GPIO_CLEAR_IRQENABLE1;
1071 l = gpio_mask;
1072 break;
e5c56ed3 1073#endif
b718aa81 1074#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 1075 case METHOD_GPIO_7XX:
1076 reg += OMAP7XX_GPIO_INT_MASK;
56739a69
ZM		 1077 l = __raw_readl(reg);
1078 if (enable)
1079 l &= ~(gpio_mask);
1080 else
1081 l |= gpio_mask;
1082 break;
1083#endif
a8eb7ca0 1084#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7
TL		 1085 case METHOD_GPIO_24XX:
1086 if (enable)
1087 reg += OMAP24XX_GPIO_SETIRQENABLE1;
1088 else
1089 reg += OMAP24XX_GPIO_CLEARIRQENABLE1;
1090 l = gpio_mask;
1091 break;
78a1a6d3
SR		 1092#endif
1093#ifdef CONFIG_ARCH_OMAP4
3f1686a9 1094 case METHOD_GPIO_44XX:
78a1a6d3
SR		 1095 if (enable)
1096 reg += OMAP4_GPIO_IRQSTATUSSET0;
1097 else
1098 reg += OMAP4_GPIO_IRQSTATUSCLR0;
1099 l = gpio_mask;
1100 break;
e5c56ed3 1101#endif
5e1c5ff4 1102 default:
e5c56ed3 1103 WARN_ON(1);
5e1c5ff4
TL		 1104 return;
1105 }
1106 __raw_writel(l, reg);
1107}
1108
1109static inline void _set_gpio_irqenable(struct gpio_bank *bank, int gpio, int enable)
1110{
1111 _enable_gpio_irqbank(bank, 1 << get_gpio_index(gpio), enable);
1112}
1113
92105bb7
TL		 1114/*
1115 * Note that ENAWAKEUP needs to be enabled in GPIO_SYSCONFIG register.
1116 * 1510 does not seem to have a wake-up register. If JTAG is connected
1117 * to the target, system will wake up always on GPIO events. While
1118 * system is running all registered GPIO interrupts need to have wake-up
1119 * enabled. When system is suspended, only selected GPIO interrupts need
1120 * to have wake-up enabled.
1121 */
1122static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
1123{
4cc6420c 1124 unsigned long uninitialized_var(flags);
a6472533 1125
92105bb7 1126 switch (bank->method) {
3ac4fa99 1127#ifdef CONFIG_ARCH_OMAP16XX
11a78b79 1128 case METHOD_MPUIO:
92105bb7 1129 case METHOD_GPIO_1610:
a6472533 1130 spin_lock_irqsave(&bank->lock, flags);
b3bb4f68 1131 if (enable)
92105bb7 1132 bank->suspend_wakeup |= (1 << gpio);
b3bb4f68 1133 else
92105bb7 1134 bank->suspend_wakeup &= ~(1 << gpio);
a6472533 1135 spin_unlock_irqrestore(&bank->lock, flags);
92105bb7 1136 return 0;
3ac4fa99 1137#endif
140455fa 1138#ifdef CONFIG_ARCH_OMAP2PLUS
3ac4fa99 1139 case METHOD_GPIO_24XX:
3f1686a9 1140 case METHOD_GPIO_44XX:
11a78b79
DB		 1141 if (bank->non_wakeup_gpios & (1 << gpio)) {
1142 printk(KERN_ERR "Unable to modify wakeup on "
1143 "non-wakeup GPIO%d\n",
1144 (bank - gpio_bank) * 32 + gpio);
1145 return -EINVAL;
1146 }
a6472533 1147 spin_lock_irqsave(&bank->lock, flags);
b3bb4f68 1148 if (enable)
3ac4fa99 1149 bank->suspend_wakeup |= (1 << gpio);
b3bb4f68 1150 else
3ac4fa99 1151 bank->suspend_wakeup &= ~(1 << gpio);
a6472533 1152 spin_unlock_irqrestore(&bank->lock, flags);
3ac4fa99
JY		 1153 return 0;
1154#endif
92105bb7
TL		 1155 default:
1156 printk(KERN_ERR "Can't enable GPIO wakeup for method %i\n",
1157 bank->method);
1158 return -EINVAL;
1159 }
1160}
1161
4196dd6b
TL		 1162static void _reset_gpio(struct gpio_bank *bank, int gpio)
1163{
1164 _set_gpio_direction(bank, get_gpio_index(gpio), 1);
1165 _set_gpio_irqenable(bank, gpio, 0);
1166 _clear_gpio_irqstatus(bank, gpio);
6cab4860 1167 _set_gpio_triggering(bank, get_gpio_index(gpio), IRQ_TYPE_NONE);
4196dd6b
TL		 1168}
1169
92105bb7
TL		 1170/* Use disable_irq_wake() and enable_irq_wake() functions from drivers */
1171static int gpio_wake_enable(unsigned int irq, unsigned int enable)
1172{
1173 unsigned int gpio = irq - IH_GPIO_BASE;
1174 struct gpio_bank *bank;
1175 int retval;
1176
1177 if (check_gpio(gpio) < 0)
1178 return -ENODEV;
58781016 1179 bank = get_irq_chip_data(irq);
92105bb7 1180 retval = _set_gpio_wakeup(bank, get_gpio_index(gpio), enable);
92105bb7
TL		 1181
1182 return retval;
1183}
1184
3ff164e1 1185static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
5e1c5ff4 1186{
3ff164e1 1187 struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
a6472533 1188 unsigned long flags;
52e31344 1189
a6472533 1190 spin_lock_irqsave(&bank->lock, flags);
92105bb7 1191
4196dd6b
TL		 1192 /* Set trigger to none. You need to enable the desired trigger with
1193 * request_irq() or set_irq_type().
1194 */
3ff164e1 1195 _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE);
92105bb7 1196
1a8bfa1e 1197#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4 1198 if (bank->method == METHOD_GPIO_1510) {
92105bb7 1199 void __iomem *reg;
5e1c5ff4 1200
92105bb7 1201 /* Claim the pin for MPU */
5e1c5ff4 1202 reg = bank->base + OMAP1510_GPIO_PIN_CONTROL;
3ff164e1 1203 __raw_writel(__raw_readl(reg) | (1 << offset), reg);
5e1c5ff4
TL		 1204 }
1205#endif
058af1ea
C		 1206 if (!cpu_class_is_omap1()) {
1207 if (!bank->mod_usage) {
9f096868 1208 void __iomem *reg = bank->base;
058af1ea 1209 u32 ctrl;
9f096868
C		 1210
1211 if (cpu_is_omap24xx() || cpu_is_omap34xx())
1212 reg += OMAP24XX_GPIO_CTRL;
1213 else if (cpu_is_omap44xx())
1214 reg += OMAP4_GPIO_CTRL;
1215 ctrl = __raw_readl(reg);
058af1ea 1216 /* Module is enabled, clocks are not gated */
9f096868
C		 1217 ctrl &= 0xFFFFFFFE;
1218 __raw_writel(ctrl, reg);
058af1ea
C		 1219 }
1220 bank->mod_usage |= 1 << offset;
1221 }
a6472533 1222 spin_unlock_irqrestore(&bank->lock, flags);
5e1c5ff4
TL		 1223
1224 return 0;
1225}
1226
3ff164e1 1227static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
5e1c5ff4 1228{
3ff164e1 1229 struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
a6472533 1230 unsigned long flags;
5e1c5ff4 1231
a6472533 1232 spin_lock_irqsave(&bank->lock, flags);
92105bb7
TL		 1233#ifdef CONFIG_ARCH_OMAP16XX
1234 if (bank->method == METHOD_GPIO_1610) {
1235 /* Disable wake-up during idle for dynamic tick */
1236 void __iomem *reg = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA;
3ff164e1 1237 __raw_writel(1 << offset, reg);
92105bb7
TL		 1238 }
1239#endif
9f096868
C		 1240#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1241 if (bank->method == METHOD_GPIO_24XX) {
92105bb7
TL		 1242 /* Disable wake-up during idle for dynamic tick */
1243 void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
3ff164e1 1244 __raw_writel(1 << offset, reg);
92105bb7 1245 }
9f096868
C		 1246#endif
1247#ifdef CONFIG_ARCH_OMAP4
1248 if (bank->method == METHOD_GPIO_44XX) {
1249 /* Disable wake-up during idle for dynamic tick */
1250 void __iomem *reg = bank->base + OMAP4_GPIO_IRQWAKEN0;
1251 __raw_writel(1 << offset, reg);
1252 }
92105bb7 1253#endif
058af1ea
C		 1254 if (!cpu_class_is_omap1()) {
1255 bank->mod_usage &= ~(1 << offset);
1256 if (!bank->mod_usage) {
9f096868 1257 void __iomem *reg = bank->base;
058af1ea 1258 u32 ctrl;
9f096868
C		 1259
1260 if (cpu_is_omap24xx() || cpu_is_omap34xx())
1261 reg += OMAP24XX_GPIO_CTRL;
1262 else if (cpu_is_omap44xx())
1263 reg += OMAP4_GPIO_CTRL;
1264 ctrl = __raw_readl(reg);
058af1ea
C		 1265 /* Module is disabled, clocks are gated */
1266 ctrl |= 1;
9f096868 1267 __raw_writel(ctrl, reg);
058af1ea
C		 1268 }
1269 }
3ff164e1 1270 _reset_gpio(bank, bank->chip.base + offset);
a6472533 1271 spin_unlock_irqrestore(&bank->lock, flags);
5e1c5ff4
TL		 1272}
1273
1274/*
1275 * We need to unmask the GPIO bank interrupt as soon as possible to
1276 * avoid missing GPIO interrupts for other lines in the bank.
1277 * Then we need to mask-read-clear-unmask the triggered GPIO lines
1278 * in the bank to avoid missing nested interrupts for a GPIO line.
1279 * If we wait to unmask individual GPIO lines in the bank after the
1280 * line's interrupt handler has been run, we may miss some nested
1281 * interrupts.
1282 */
10dd5ce2 1283static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
5e1c5ff4 1284{
92105bb7 1285 void __iomem *isr_reg = NULL;
5e1c5ff4 1286 u32 isr;
4318f36b 1287 unsigned int gpio_irq, gpio_index;
5e1c5ff4 1288 struct gpio_bank *bank;
ea6dedd7
ID		 1289 u32 retrigger = 0;
1290 int unmasked = 0;
5e1c5ff4
TL		 1291
1292 desc->chip->ack(irq);
1293
418ca1f0 1294 bank = get_irq_data(irq);
e5c56ed3 1295#ifdef CONFIG_ARCH_OMAP1
5e1c5ff4
TL		 1296 if (bank->method == METHOD_MPUIO)
1297 isr_reg = bank->base + OMAP_MPUIO_GPIO_INT;
e5c56ed3 1298#endif
1a8bfa1e 1299#ifdef CONFIG_ARCH_OMAP15XX
5e1c5ff4
TL		 1300 if (bank->method == METHOD_GPIO_1510)
1301 isr_reg = bank->base + OMAP1510_GPIO_INT_STATUS;
1302#endif
1303#if defined(CONFIG_ARCH_OMAP16XX)
1304 if (bank->method == METHOD_GPIO_1610)
1305 isr_reg = bank->base + OMAP1610_GPIO_IRQSTATUS1;
1306#endif
b718aa81 1307#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
7c006926
AB		 1308 if (bank->method == METHOD_GPIO_7XX)
1309 isr_reg = bank->base + OMAP7XX_GPIO_INT_STATUS;
56739a69 1310#endif
a8eb7ca0 1311#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7
TL		 1312 if (bank->method == METHOD_GPIO_24XX)
1313 isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1;
78a1a6d3
SR		 1314#endif
1315#if defined(CONFIG_ARCH_OMAP4)
3f1686a9 1316 if (bank->method == METHOD_GPIO_44XX)
78a1a6d3 1317 isr_reg = bank->base + OMAP4_GPIO_IRQSTATUS0;
92105bb7 1318#endif
b1cc4c55
EK		 1319
1320 if (WARN_ON(!isr_reg))
1321 goto exit;
1322
92105bb7 1323 while(1) {
6e60e79a 1324 u32 isr_saved, level_mask = 0;
ea6dedd7 1325 u32 enabled;
6e60e79a 1326
ea6dedd7
ID		 1327 enabled = _get_gpio_irqbank_mask(bank);
1328 isr_saved = isr = __raw_readl(isr_reg) & enabled;
6e60e79a
TL		 1329
1330 if (cpu_is_omap15xx() && (bank->method == METHOD_MPUIO))
1331 isr &= 0x0000ffff;
1332
5492fb1a 1333 if (cpu_class_is_omap2()) {
b144ff6f 1334 level_mask = bank->level_mask & enabled;
ea6dedd7 1335 }
6e60e79a
TL		 1336
1337 /* clear edge sensitive interrupts before handler(s) are
1338 called so that we don't miss any interrupt occurred while
1339 executing them */
1340 _enable_gpio_irqbank(bank, isr_saved & ~level_mask, 0);
1341 _clear_gpio_irqbank(bank, isr_saved & ~level_mask);
1342 _enable_gpio_irqbank(bank, isr_saved & ~level_mask, 1);
1343
1344 /* if there is only edge sensitive GPIO pin interrupts
1345 configured, we could unmask GPIO bank interrupt immediately */
ea6dedd7
ID		 1346 if (!level_mask && !unmasked) {
1347 unmasked = 1;
6e60e79a 1348 desc->chip->unmask(irq);
ea6dedd7 1349 }
92105bb7 1350
ea6dedd7
ID		 1351 isr |= retrigger;
1352 retrigger = 0;
92105bb7
TL		 1353 if (!isr)
1354 break;
1355
1356 gpio_irq = bank->virtual_irq_start;
1357 for (; isr != 0; isr >>= 1, gpio_irq++) {
4318f36b
CM		 1358 gpio_index = get_gpio_index(irq_to_gpio(gpio_irq));
1359
92105bb7
TL		 1360 if (!(isr & 1))
1361 continue;
29454dde 1362
4318f36b
CM		 1363#ifdef CONFIG_ARCH_OMAP1
1364 /*
1365 * Some chips can't respond to both rising and falling
1366 * at the same time. If this irq was requested with
1367 * both flags, we need to flip the ICR data for the IRQ
1368 * to respond to the IRQ for the opposite direction.
1369 * This will be indicated in the bank toggle_mask.
1370 */
1371 if (bank->toggle_mask & (1 << gpio_index))
1372 _toggle_gpio_edge_triggering(bank, gpio_index);
1373#endif
1374
d8aa0251 1375 generic_handle_irq(gpio_irq);
92105bb7 1376 }
1a8bfa1e 1377 }
ea6dedd7
ID		 1378 /* if bank has any level sensitive GPIO pin interrupt
1379 configured, we must unmask the bank interrupt only after
1380 handler(s) are executed in order to avoid spurious bank
1381 interrupt */
b1cc4c55 1382exit:
ea6dedd7
ID		 1383 if (!unmasked)
1384 desc->chip->unmask(irq);
1385
5e1c5ff4
TL		 1386}
1387
4196dd6b
TL		 1388static void gpio_irq_shutdown(unsigned int irq)
1389{
1390 unsigned int gpio = irq - IH_GPIO_BASE;
58781016 1391 struct gpio_bank *bank = get_irq_chip_data(irq);
4196dd6b
TL		 1392
1393 _reset_gpio(bank, gpio);
1394}
1395
5e1c5ff4
TL		 1396static void gpio_ack_irq(unsigned int irq)
1397{
1398 unsigned int gpio = irq - IH_GPIO_BASE;
58781016 1399 struct gpio_bank *bank = get_irq_chip_data(irq);
5e1c5ff4
TL		 1400
1401 _clear_gpio_irqstatus(bank, gpio);
1402}
1403
1404static void gpio_mask_irq(unsigned int irq)
1405{
1406 unsigned int gpio = irq - IH_GPIO_BASE;
58781016 1407 struct gpio_bank *bank = get_irq_chip_data(irq);
5e1c5ff4
TL		 1408
1409 _set_gpio_irqenable(bank, gpio, 0);
55b6019a 1410 _set_gpio_triggering(bank, get_gpio_index(gpio), IRQ_TYPE_NONE);
5e1c5ff4
TL		 1411}
1412
1413static void gpio_unmask_irq(unsigned int irq)
1414{
1415 unsigned int gpio = irq - IH_GPIO_BASE;
58781016 1416 struct gpio_bank *bank = get_irq_chip_data(irq);
b144ff6f 1417 unsigned int irq_mask = 1 << get_gpio_index(gpio);
55b6019a
KH		 1418 struct irq_desc *desc = irq_to_desc(irq);
1419 u32 trigger = desc->status & IRQ_TYPE_SENSE_MASK;
1420
1421 if (trigger)
1422 _set_gpio_triggering(bank, get_gpio_index(gpio), trigger);
b144ff6f
KH		 1423
1424 /* For level-triggered GPIOs, the clearing must be done after
1425 * the HW source is cleared, thus after the handler has run */
1426 if (bank->level_mask & irq_mask) {
1427 _set_gpio_irqenable(bank, gpio, 0);
1428 _clear_gpio_irqstatus(bank, gpio);
1429 }
5e1c5ff4 1430
4de8c75b 1431 _set_gpio_irqenable(bank, gpio, 1);
5e1c5ff4
TL		 1432}
1433
e5c56ed3
DB		 1434static struct irq_chip gpio_irq_chip = {
1435 .name = "GPIO",
1436 .shutdown = gpio_irq_shutdown,
1437 .ack = gpio_ack_irq,
1438 .mask = gpio_mask_irq,
1439 .unmask = gpio_unmask_irq,
1440 .set_type = gpio_irq_type,
1441 .set_wake = gpio_wake_enable,
1442};
1443
1444/*---------------------------------------------------------------------*/
1445
1446#ifdef CONFIG_ARCH_OMAP1
1447
1448/* MPUIO uses the always-on 32k clock */
1449
5e1c5ff4
TL		 1450static void mpuio_ack_irq(unsigned int irq)
1451{
1452 /* The ISR is reset automatically, so do nothing here. */
1453}
1454
1455static void mpuio_mask_irq(unsigned int irq)
1456{
1457 unsigned int gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE);
58781016 1458 struct gpio_bank *bank = get_irq_chip_data(irq);
5e1c5ff4
TL		 1459
1460 _set_gpio_irqenable(bank, gpio, 0);
1461}
1462
1463static void mpuio_unmask_irq(unsigned int irq)
1464{
1465 unsigned int gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE);
58781016 1466 struct gpio_bank *bank = get_irq_chip_data(irq);
5e1c5ff4
TL		 1467
1468 _set_gpio_irqenable(bank, gpio, 1);
1469}
1470
e5c56ed3
DB		 1471static struct irq_chip mpuio_irq_chip = {
1472 .name = "MPUIO",
1473 .ack = mpuio_ack_irq,
1474 .mask = mpuio_mask_irq,
1475 .unmask = mpuio_unmask_irq,
92105bb7 1476 .set_type = gpio_irq_type,
11a78b79
DB		 1477#ifdef CONFIG_ARCH_OMAP16XX
1478 /* REVISIT: assuming only 16xx supports MPUIO wake events */
1479 .set_wake = gpio_wake_enable,
1480#endif
5e1c5ff4
TL		 1481};
1482
e5c56ed3
DB		 1483
1484#define bank_is_mpuio(bank) ((bank)->method == METHOD_MPUIO)
1485
11a78b79
DB		 1486
1487#ifdef CONFIG_ARCH_OMAP16XX
1488
1489#include <linux/platform_device.h>
1490
79ee031f 1491static int omap_mpuio_suspend_noirq(struct device *dev)
11a78b79 1492{
79ee031f 1493 struct platform_device *pdev = to_platform_device(dev);
11a78b79
DB		 1494 struct gpio_bank *bank = platform_get_drvdata(pdev);
1495 void __iomem *mask_reg = bank->base + OMAP_MPUIO_GPIO_MASKIT;
a6472533 1496 unsigned long flags;
11a78b79 1497
a6472533 1498 spin_lock_irqsave(&bank->lock, flags);
11a78b79
DB		 1499 bank->saved_wakeup = __raw_readl(mask_reg);
1500 __raw_writel(0xffff & ~bank->suspend_wakeup, mask_reg);
a6472533 1501 spin_unlock_irqrestore(&bank->lock, flags);
11a78b79
DB		 1502
1503 return 0;
1504}
1505
79ee031f 1506static int omap_mpuio_resume_noirq(struct device *dev)
11a78b79 1507{
79ee031f 1508 struct platform_device *pdev = to_platform_device(dev);
11a78b79
DB		 1509 struct gpio_bank *bank = platform_get_drvdata(pdev);
1510 void __iomem *mask_reg = bank->base + OMAP_MPUIO_GPIO_MASKIT;
a6472533 1511 unsigned long flags;
11a78b79 1512
a6472533 1513 spin_lock_irqsave(&bank->lock, flags);
11a78b79 1514 __raw_writel(bank->saved_wakeup, mask_reg);
a6472533 1515 spin_unlock_irqrestore(&bank->lock, flags);
11a78b79
DB		 1516
1517 return 0;
1518}
1519
47145210 1520static const struct dev_pm_ops omap_mpuio_dev_pm_ops = {
79ee031f
MD		 1521 .suspend_noirq = omap_mpuio_suspend_noirq,
1522 .resume_noirq = omap_mpuio_resume_noirq,
1523};
1524
11a78b79
DB		 1525/* use platform_driver for this, now that there's no longer any
1526 * point to sys_device (other than not disturbing old code).
1527 */
1528static struct platform_driver omap_mpuio_driver = {
11a78b79
DB		 1529 .driver = {
1530 .name = "mpuio",
79ee031f 1531 .pm = &omap_mpuio_dev_pm_ops,
11a78b79
DB		 1532 },
1533};
1534
1535static struct platform_device omap_mpuio_device = {
1536 .name = "mpuio",
1537 .id = -1,
1538 .dev = {
1539 .driver = &omap_mpuio_driver.driver,
1540 }
1541 /* could list the /proc/iomem resources */
1542};
1543
1544static inline void mpuio_init(void)
1545{
fcf126d8
DB		 1546 platform_set_drvdata(&omap_mpuio_device, &gpio_bank_1610[0]);
1547
11a78b79
DB		 1548 if (platform_driver_register(&omap_mpuio_driver) == 0)
1549 (void) platform_device_register(&omap_mpuio_device);
1550}
1551
1552#else
1553static inline void mpuio_init(void) {}
1554#endif /* 16xx */
1555
e5c56ed3
DB		 1556#else
1557
1558extern struct irq_chip mpuio_irq_chip;
1559
1560#define bank_is_mpuio(bank) 0
11a78b79 1561static inline void mpuio_init(void) {}
e5c56ed3
DB		 1562
1563#endif
1564
1565/*---------------------------------------------------------------------*/
5e1c5ff4 1566
52e31344
DB		 1567/* REVISIT these are stupid implementations! replace by ones that
1568 * don't switch on METHOD_* and which mostly avoid spinlocks
1569 */
1570
1571static int gpio_input(struct gpio_chip *chip, unsigned offset)
1572{
1573 struct gpio_bank *bank;
1574 unsigned long flags;
1575
1576 bank = container_of(chip, struct gpio_bank, chip);
1577 spin_lock_irqsave(&bank->lock, flags);
1578 _set_gpio_direction(bank, offset, 1);
1579 spin_unlock_irqrestore(&bank->lock, flags);
1580 return 0;
1581}
1582
b37c45b8
RQ		 1583static int gpio_is_input(struct gpio_bank *bank, int mask)
1584{
1585 void __iomem *reg = bank->base;
1586
1587 switch (bank->method) {
1588 case METHOD_MPUIO:
1589 reg += OMAP_MPUIO_IO_CNTL;
1590 break;
1591 case METHOD_GPIO_1510:
1592 reg += OMAP1510_GPIO_DIR_CONTROL;
1593 break;
1594 case METHOD_GPIO_1610:
1595 reg += OMAP1610_GPIO_DIRECTION;
1596 break;
7c006926
AB		 1597 case METHOD_GPIO_7XX:
1598 reg += OMAP7XX_GPIO_DIR_CONTROL;
b37c45b8
RQ		 1599 break;
1600 case METHOD_GPIO_24XX:
1601 reg += OMAP24XX_GPIO_OE;
1602 break;
9f096868
C		 1603 case METHOD_GPIO_44XX:
1604 reg += OMAP4_GPIO_OE;
1605 break;
1606 default:
1607 WARN_ONCE(1, "gpio_is_input: incorrect OMAP GPIO method");
1608 return -EINVAL;
b37c45b8
RQ		 1609 }
1610 return __raw_readl(reg) & mask;
1611}
1612
52e31344
DB		 1613static int gpio_get(struct gpio_chip *chip, unsigned offset)
1614{
b37c45b8
RQ		 1615 struct gpio_bank *bank;
1616 void __iomem *reg;
1617 int gpio;
1618 u32 mask;
1619
1620 gpio = chip->base + offset;
1621 bank = get_gpio_bank(gpio);
1622 reg = bank->base;
1623 mask = 1 << get_gpio_index(gpio);
1624
1625 if (gpio_is_input(bank, mask))
1626 return _get_gpio_datain(bank, gpio);
1627 else
1628 return _get_gpio_dataout(bank, gpio);
52e31344
DB		 1629}
1630
1631static int gpio_output(struct gpio_chip *chip, unsigned offset, int value)
1632{
1633 struct gpio_bank *bank;
1634 unsigned long flags;
1635
1636 bank = container_of(chip, struct gpio_bank, chip);
1637 spin_lock_irqsave(&bank->lock, flags);
1638 _set_gpio_dataout(bank, offset, value);
1639 _set_gpio_direction(bank, offset, 0);
1640 spin_unlock_irqrestore(&bank->lock, flags);
1641 return 0;
1642}
1643
168ef3d9
FB		 1644static int gpio_debounce(struct gpio_chip *chip, unsigned offset,
1645 unsigned debounce)
1646{
1647 struct gpio_bank *bank;
1648 unsigned long flags;
1649
1650 bank = container_of(chip, struct gpio_bank, chip);
1651 spin_lock_irqsave(&bank->lock, flags);
1652 _set_gpio_debounce(bank, offset, debounce);
1653 spin_unlock_irqrestore(&bank->lock, flags);
1654
1655 return 0;
1656}
1657
52e31344
DB		 1658static void gpio_set(struct gpio_chip *chip, unsigned offset, int value)
1659{
1660 struct gpio_bank *bank;
1661 unsigned long flags;
1662
1663 bank = container_of(chip, struct gpio_bank, chip);
1664 spin_lock_irqsave(&bank->lock, flags);
1665 _set_gpio_dataout(bank, offset, value);
1666 spin_unlock_irqrestore(&bank->lock, flags);
1667}
1668
a007b709
DB		 1669static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
1670{
1671 struct gpio_bank *bank;
1672
1673 bank = container_of(chip, struct gpio_bank, chip);
1674 return bank->virtual_irq_start + offset;
1675}
1676
52e31344
DB		 1677/*---------------------------------------------------------------------*/
1678
1a8bfa1e 1679static int initialized;
56213ca4 1680#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2)
1a8bfa1e 1681static struct clk * gpio_ick;
5492fb1a
SMK		 1682#endif
1683
1684#if defined(CONFIG_ARCH_OMAP2)
1a8bfa1e 1685static struct clk * gpio_fck;
5492fb1a 1686#endif
5e1c5ff4 1687
5492fb1a 1688#if defined(CONFIG_ARCH_OMAP2430)
56a25641
SMK		 1689static struct clk * gpio5_ick;
1690static struct clk * gpio5_fck;
1691#endif
1692
44169075 1693#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
5492fb1a
SMK		 1694static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
1695#endif
1696
9a748053 1697static void __init omap_gpio_show_rev(struct gpio_bank *bank)
9f7065da
TL		 1698{
1699 u32 rev;
1700
9a748053
TL		 1701 if (cpu_is_omap16xx() && !(bank->method != METHOD_MPUIO))
1702 rev = __raw_readw(bank->base + OMAP1610_GPIO_REVISION);
9f7065da 1703 else if (cpu_is_omap24xx() || cpu_is_omap34xx())
9a748053 1704 rev = __raw_readl(bank->base + OMAP24XX_GPIO_REVISION);
9f7065da 1705 else if (cpu_is_omap44xx())
9a748053 1706 rev = __raw_readl(bank->base + OMAP4_GPIO_REVISION);
9f7065da
TL		 1707 else
1708 return;
1709
1710 printk(KERN_INFO "OMAP GPIO hardware version %d.%d\n",
1711 (rev >> 4) & 0x0f, rev & 0x0f);
1712}
1713
8ba55c5c
DB		 1714/* This lock class tells lockdep that GPIO irqs are in a different
1715 * category than their parents, so it won't report false recursion.
1716 */
1717static struct lock_class_key gpio_lock_class;
1718
2fae7fbe
VC		 1719static void omap_gpio_mod_init(struct gpio_bank *bank, int id)
1720{
1721 if (cpu_class_is_omap2()) {
1722 if (cpu_is_omap44xx()) {
1723 __raw_writel(0xffffffff, bank->base +
1724 OMAP4_GPIO_IRQSTATUSCLR0);
1725 __raw_writel(0x00000000, bank->base +
1726 OMAP4_GPIO_DEBOUNCENABLE);
1727 /* Initialize interface clk ungated, module enabled */
1728 __raw_writel(0, bank->base + OMAP4_GPIO_CTRL);
1729 } else if (cpu_is_omap34xx()) {
1730 __raw_writel(0x00000000, bank->base +
1731 OMAP24XX_GPIO_IRQENABLE1);
1732 __raw_writel(0xffffffff, bank->base +
1733 OMAP24XX_GPIO_IRQSTATUS1);
1734 __raw_writel(0x00000000, bank->base +
1735 OMAP24XX_GPIO_DEBOUNCE_EN);
1736
1737 /* Initialize interface clk ungated, module enabled */
1738 __raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);
1739 } else if (cpu_is_omap24xx()) {
1740 static const u32 non_wakeup_gpios[] = {
1741 0xe203ffc0, 0x08700040
1742 };
1743 if (id < ARRAY_SIZE(non_wakeup_gpios))
1744 bank->non_wakeup_gpios = non_wakeup_gpios[id];
1745 }
1746 } else if (cpu_class_is_omap1()) {
1747 if (bank_is_mpuio(bank))
1748 __raw_writew(0xffff, bank->base
1749 + OMAP_MPUIO_GPIO_MASKIT);
1750 if (cpu_is_omap15xx() && bank->method == METHOD_GPIO_1510) {
1751 __raw_writew(0xffff, bank->base
1752 + OMAP1510_GPIO_INT_MASK);
1753 __raw_writew(0x0000, bank->base
1754 + OMAP1510_GPIO_INT_STATUS);
1755 }
1756 if (cpu_is_omap16xx() && bank->method == METHOD_GPIO_1610) {
1757 __raw_writew(0x0000, bank->base
1758 + OMAP1610_GPIO_IRQENABLE1);
1759 __raw_writew(0xffff, bank->base
1760 + OMAP1610_GPIO_IRQSTATUS1);
1761 __raw_writew(0x0014, bank->base
1762 + OMAP1610_GPIO_SYSCONFIG);
1763
1764 /*
1765 * Enable system clock for GPIO module.
1766 * The CAM_CLK_CTRL *is* really the right place.
1767 */
1768 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
1769 ULPD_CAM_CLK_CTRL);
1770 }
1771 if (cpu_is_omap7xx() && bank->method == METHOD_GPIO_7XX) {
1772 __raw_writel(0xffffffff, bank->base
1773 + OMAP7XX_GPIO_INT_MASK);
1774 __raw_writel(0x00000000, bank->base
1775 + OMAP7XX_GPIO_INT_STATUS);
1776 }
1777 }
1778}
1779
1780static void __init omap_gpio_chip_init(struct gpio_bank *bank)
1781{
1782 int j, bank_width = 16;
1783 static int gpio;
1784
1785 if (cpu_is_omap7xx() && bank->method == METHOD_GPIO_7XX)
1786 bank_width = 32; /* 7xx has 32-bit GPIOs */
1787
1788 if ((bank->method == METHOD_GPIO_24XX) ||
1789 (bank->method == METHOD_GPIO_44XX))
1790 bank_width = 32;
1791
1792 bank->mod_usage = 0;
1793 /*
1794 * REVISIT eventually switch from OMAP-specific gpio structs
1795 * over to the generic ones
1796 */
1797 bank->chip.request = omap_gpio_request;
1798 bank->chip.free = omap_gpio_free;
1799 bank->chip.direction_input = gpio_input;
1800 bank->chip.get = gpio_get;
1801 bank->chip.direction_output = gpio_output;
1802 bank->chip.set_debounce = gpio_debounce;
1803 bank->chip.set = gpio_set;
1804 bank->chip.to_irq = gpio_2irq;
1805 if (bank_is_mpuio(bank)) {
1806 bank->chip.label = "mpuio";
1807#ifdef CONFIG_ARCH_OMAP16XX
1808 bank->chip.dev = &omap_mpuio_device.dev;
1809#endif
1810 bank->chip.base = OMAP_MPUIO(0);
1811 } else {
1812 bank->chip.label = "gpio";
1813 bank->chip.base = gpio;
1814 gpio += bank_width;
1815 }
1816 bank->chip.ngpio = bank_width;
1817
1818 gpiochip_add(&bank->chip);
1819
1820 for (j = bank->virtual_irq_start;
1821 j < bank->virtual_irq_start + bank_width; j++) {
1822 lockdep_set_class(&irq_desc[j].lock, &gpio_lock_class);
1823 set_irq_chip_data(j, bank);
1824 if (bank_is_mpuio(bank))
1825 set_irq_chip(j, &mpuio_irq_chip);
1826 else
1827 set_irq_chip(j, &gpio_irq_chip);
1828 set_irq_handler(j, handle_simple_irq);
1829 set_irq_flags(j, IRQF_VALID);
1830 }
1831 set_irq_chained_handler(bank->irq, gpio_irq_handler);
1832 set_irq_data(bank->irq, bank);
1833}
1834
5e1c5ff4
TL		 1835static int __init _omap_gpio_init(void)
1836{
1837 int i;
1838 struct gpio_bank *bank;
9f7065da 1839 int bank_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */
5492fb1a 1840 char clk_name[11];
5e1c5ff4
TL		 1841
1842 initialized = 1;
1843
5492fb1a 1844#if defined(CONFIG_ARCH_OMAP1)
6e60e79a 1845 if (cpu_is_omap15xx()) {
1a8bfa1e
TL		 1846 gpio_ick = clk_get(NULL, "arm_gpio_ck");
1847 if (IS_ERR(gpio_ick))
92105bb7
TL		 1848 printk("Could not get arm_gpio_ck\n");
1849 else
30ff720b 1850 clk_enable(gpio_ick);
1a8bfa1e 1851 }
5492fb1a
SMK		 1852#endif
1853#if defined(CONFIG_ARCH_OMAP2)
1854 if (cpu_class_is_omap2()) {
1a8bfa1e
TL		 1855 gpio_ick = clk_get(NULL, "gpios_ick");
1856 if (IS_ERR(gpio_ick))
1857 printk("Could not get gpios_ick\n");
1858 else
30ff720b 1859 clk_enable(gpio_ick);
1a8bfa1e 1860 gpio_fck = clk_get(NULL, "gpios_fck");
1630b52d 1861 if (IS_ERR(gpio_fck))
1a8bfa1e
TL		 1862 printk("Could not get gpios_fck\n");
1863 else
30ff720b 1864 clk_enable(gpio_fck);
56a25641
SMK		 1865
1866 /*
5492fb1a 1867 * On 2430 & 3430 GPIO 5 uses CORE L4 ICLK
56a25641 1868 */
5492fb1a 1869#if defined(CONFIG_ARCH_OMAP2430)
56a25641
SMK		 1870 if (cpu_is_omap2430()) {
1871 gpio5_ick = clk_get(NULL, "gpio5_ick");
1872 if (IS_ERR(gpio5_ick))
1873 printk("Could not get gpio5_ick\n");
1874 else
1875 clk_enable(gpio5_ick);
1876 gpio5_fck = clk_get(NULL, "gpio5_fck");
1877 if (IS_ERR(gpio5_fck))
1878 printk("Could not get gpio5_fck\n");
1879 else
1880 clk_enable(gpio5_fck);
1881 }
1882#endif
5492fb1a
SMK		 1883 }
1884#endif
1885
44169075
SS		 1886#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
1887 if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
5492fb1a
SMK		 1888 for (i = 0; i < OMAP34XX_NR_GPIOS; i++) {
1889 sprintf(clk_name, "gpio%d_ick", i + 1);
1890 gpio_iclks[i] = clk_get(NULL, clk_name);
1891 if (IS_ERR(gpio_iclks[i]))
1892 printk(KERN_ERR "Could not get %s\n", clk_name);
1893 else
1894 clk_enable(gpio_iclks[i]);
5492fb1a
SMK		 1895 }
1896 }
1897#endif
1898
92105bb7 1899
1a8bfa1e 1900#ifdef CONFIG_ARCH_OMAP15XX
6e60e79a 1901 if (cpu_is_omap15xx()) {
5e1c5ff4
TL		 1902 gpio_bank_count = 2;
1903 gpio_bank = gpio_bank_1510;
9f7065da 1904 bank_size = SZ_2K;
5e1c5ff4
TL		 1905 }
1906#endif
1907#if defined(CONFIG_ARCH_OMAP16XX)
1908 if (cpu_is_omap16xx()) {
5e1c5ff4
TL		 1909 gpio_bank_count = 5;
1910 gpio_bank = gpio_bank_1610;
9f7065da 1911 bank_size = SZ_2K;
5e1c5ff4
TL		 1912 }
1913#endif
b718aa81
AB		 1914#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
1915 if (cpu_is_omap7xx()) {
56739a69 1916 gpio_bank_count = 7;
7c006926 1917 gpio_bank = gpio_bank_7xx;
9f7065da 1918 bank_size = SZ_2K;
56739a69
ZM		 1919 }
1920#endif
088ef950 1921#ifdef CONFIG_ARCH_OMAP2
56a25641 1922 if (cpu_is_omap242x()) {
92105bb7 1923 gpio_bank_count = 4;
56a25641 1924 gpio_bank = gpio_bank_242x;
56a25641
SMK		 1925 }
1926 if (cpu_is_omap243x()) {
56a25641
SMK		 1927 gpio_bank_count = 5;
1928 gpio_bank = gpio_bank_243x;
92105bb7 1929 }
5492fb1a 1930#endif
a8eb7ca0 1931#ifdef CONFIG_ARCH_OMAP3
5492fb1a 1932 if (cpu_is_omap34xx()) {
5492fb1a
SMK		 1933 gpio_bank_count = OMAP34XX_NR_GPIOS;
1934 gpio_bank = gpio_bank_34xx;
5492fb1a 1935 }
44169075
SS		 1936#endif
1937#ifdef CONFIG_ARCH_OMAP4
1938 if (cpu_is_omap44xx()) {
44169075
SS		 1939 gpio_bank_count = OMAP34XX_NR_GPIOS;
1940 gpio_bank = gpio_bank_44xx;
44169075 1941 }
5e1c5ff4
TL		 1942#endif
1943 for (i = 0; i < gpio_bank_count; i++) {
5e1c5ff4
TL		 1944
1945 bank = &gpio_bank[i];
5e1c5ff4 1946 spin_lock_init(&bank->lock);
9f7065da
TL		 1947
1948 /* Static mapping, never released */
1949 bank->base = ioremap(bank->pbase, bank_size);
1950 if (!bank->base) {
1951 printk(KERN_ERR "Could not ioremap gpio bank%i\n", i);
1952 continue;
1953 }
1954
2fae7fbe
VC		 1955 omap_gpio_mod_init(bank, i);
1956 omap_gpio_chip_init(bank);
89db9482 1957
44169075 1958 if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
89db9482
JH		 1959 sprintf(clk_name, "gpio%d_dbck", i + 1);
1960 bank->dbck = clk_get(NULL, clk_name);
1961 if (IS_ERR(bank->dbck))
1962 printk(KERN_ERR "Could not get %s\n", clk_name);
1963 }
5e1c5ff4
TL		 1964 }
1965
9a748053 1966 omap_gpio_show_rev(bank);
9f7065da 1967
5e1c5ff4
TL		 1968 return 0;
1969}
1970
140455fa 1971#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
92105bb7
TL		 1972static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
1973{
1974 int i;
1975
5492fb1a 1976 if (!cpu_class_is_omap2() && !cpu_is_omap16xx())
92105bb7
TL		 1977 return 0;
1978
1979 for (i = 0; i < gpio_bank_count; i++) {
1980 struct gpio_bank *bank = &gpio_bank[i];
1981 void __iomem *wake_status;
1982 void __iomem *wake_clear;
1983 void __iomem *wake_set;
a6472533 1984 unsigned long flags;
92105bb7
TL		 1985
1986 switch (bank->method) {
e5c56ed3 1987#ifdef CONFIG_ARCH_OMAP16XX
92105bb7
TL		 1988 case METHOD_GPIO_1610:
1989 wake_status = bank->base + OMAP1610_GPIO_WAKEUPENABLE;
1990 wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA;
1991 wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
1992 break;
e5c56ed3 1993#endif
a8eb7ca0 1994#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7 1995 case METHOD_GPIO_24XX:
723fdb78 1996 wake_status = bank->base + OMAP24XX_GPIO_WAKE_EN;
92105bb7
TL		 1997 wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
1998 wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA;
1999 break;
78a1a6d3
SR		 2000#endif
2001#ifdef CONFIG_ARCH_OMAP4
3f1686a9 2002 case METHOD_GPIO_44XX:
78a1a6d3
SR		 2003 wake_status = bank->base + OMAP4_GPIO_IRQWAKEN0;
2004 wake_clear = bank->base + OMAP4_GPIO_IRQWAKEN0;
2005 wake_set = bank->base + OMAP4_GPIO_IRQWAKEN0;
2006 break;
e5c56ed3 2007#endif
92105bb7
TL		 2008 default:
2009 continue;
2010 }
2011
a6472533 2012 spin_lock_irqsave(&bank->lock, flags);
92105bb7
TL		 2013 bank->saved_wakeup = __raw_readl(wake_status);
2014 __raw_writel(0xffffffff, wake_clear);
2015 __raw_writel(bank->suspend_wakeup, wake_set);
a6472533 2016 spin_unlock_irqrestore(&bank->lock, flags);
92105bb7
TL		 2017 }
2018
2019 return 0;
2020}
2021
2022static int omap_gpio_resume(struct sys_device *dev)
2023{
2024 int i;
2025
723fdb78 2026 if (!cpu_class_is_omap2() && !cpu_is_omap16xx())
92105bb7
TL		 2027 return 0;
2028
2029 for (i = 0; i < gpio_bank_count; i++) {
2030 struct gpio_bank *bank = &gpio_bank[i];
2031 void __iomem *wake_clear;
2032 void __iomem *wake_set;
a6472533 2033 unsigned long flags;
92105bb7
TL		 2034
2035 switch (bank->method) {
e5c56ed3 2036#ifdef CONFIG_ARCH_OMAP16XX
92105bb7
TL		 2037 case METHOD_GPIO_1610:
2038 wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA;
2039 wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
2040 break;
e5c56ed3 2041#endif
a8eb7ca0 2042#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
92105bb7 2043 case METHOD_GPIO_24XX:
0d9356cb
TL		 2044 wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
2045 wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA;
92105bb7 2046 break;
78a1a6d3
SR		 2047#endif
2048#ifdef CONFIG_ARCH_OMAP4
3f1686a9 2049 case METHOD_GPIO_44XX:
78a1a6d3
SR		 2050 wake_clear = bank->base + OMAP4_GPIO_IRQWAKEN0;
2051 wake_set = bank->base + OMAP4_GPIO_IRQWAKEN0;
2052 break;
e5c56ed3 2053#endif
92105bb7
TL		 2054 default:
2055 continue;
2056 }
2057
a6472533 2058 spin_lock_irqsave(&bank->lock, flags);
92105bb7
TL		 2059 __raw_writel(0xffffffff, wake_clear);
2060 __raw_writel(bank->saved_wakeup, wake_set);
a6472533 2061 spin_unlock_irqrestore(&bank->lock, flags);
92105bb7
TL		 2062 }
2063
2064 return 0;
2065}
2066
2067static struct sysdev_class omap_gpio_sysclass = {
af5ca3f4 2068 .name = "gpio",
92105bb7
TL		 2069 .suspend = omap_gpio_suspend,
2070 .resume = omap_gpio_resume,
2071};
2072
2073static struct sys_device omap_gpio_device = {
2074 .id = 0,
2075 .cls = &omap_gpio_sysclass,
2076};
3ac4fa99
JY		 2077
2078#endif
2079
140455fa 2080#ifdef CONFIG_ARCH_OMAP2PLUS
3ac4fa99
JY		 2081
2082static int workaround_enabled;
2083
43ffcd9a 2084void omap2_gpio_prepare_for_idle(int power_state)
3ac4fa99
JY		 2085{
2086 int i, c = 0;
a118b5f3 2087 int min = 0;
3ac4fa99 2088
a118b5f3
TK		 2089 if (cpu_is_omap34xx())
2090 min = 1;
43ffcd9a 2091
a118b5f3 2092 for (i = min; i < gpio_bank_count; i++) {
3ac4fa99 2093 struct gpio_bank *bank = &gpio_bank[i];
ca828760 2094 u32 l1 = 0, l2 = 0;
0aed0435 2095 int j;
3ac4fa99 2096
0aed0435 2097 for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++)
8865b9b6
KH		 2098 clk_disable(bank->dbck);
2099
43ffcd9a
KH		 2100 if (power_state > PWRDM_POWER_OFF)
2101 continue;
2102
2103 /* If going to OFF, remove triggering for all
2104 * non-wakeup GPIOs. Otherwise spurious IRQs will be
2105 * generated. See OMAP2420 Errata item 1.101. */
3ac4fa99
JY		 2106 if (!(bank->enabled_non_wakeup_gpios))
2107 continue;
3f1686a9
TL		 2108
2109 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2110 bank->saved_datain = __raw_readl(bank->base +
2111 OMAP24XX_GPIO_DATAIN);
2112 l1 = __raw_readl(bank->base +
2113 OMAP24XX_GPIO_FALLINGDETECT);
2114 l2 = __raw_readl(bank->base +
2115 OMAP24XX_GPIO_RISINGDETECT);
2116 }
2117
2118 if (cpu_is_omap44xx()) {
2119 bank->saved_datain = __raw_readl(bank->base +
2120 OMAP4_GPIO_DATAIN);
2121 l1 = __raw_readl(bank->base +
2122 OMAP4_GPIO_FALLINGDETECT);
2123 l2 = __raw_readl(bank->base +
2124 OMAP4_GPIO_RISINGDETECT);
2125 }
2126
3ac4fa99
JY		 2127 bank->saved_fallingdetect = l1;
2128 bank->saved_risingdetect = l2;
2129 l1 &= ~bank->enabled_non_wakeup_gpios;
2130 l2 &= ~bank->enabled_non_wakeup_gpios;
3f1686a9
TL		 2131
2132 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2133 __raw_writel(l1, bank->base +
2134 OMAP24XX_GPIO_FALLINGDETECT);
2135 __raw_writel(l2, bank->base +
2136 OMAP24XX_GPIO_RISINGDETECT);
2137 }
2138
2139 if (cpu_is_omap44xx()) {
2140 __raw_writel(l1, bank->base + OMAP4_GPIO_FALLINGDETECT);
2141 __raw_writel(l2, bank->base + OMAP4_GPIO_RISINGDETECT);
2142 }
2143
3ac4fa99
JY		 2144 c++;
2145 }
2146 if (!c) {
2147 workaround_enabled = 0;
2148 return;
2149 }
2150 workaround_enabled = 1;
2151}
2152
43ffcd9a 2153void omap2_gpio_resume_after_idle(void)
3ac4fa99
JY		 2154{
2155 int i;
a118b5f3 2156 int min = 0;
3ac4fa99 2157
a118b5f3
TK		 2158 if (cpu_is_omap34xx())
2159 min = 1;
2160 for (i = min; i < gpio_bank_count; i++) {
3ac4fa99 2161 struct gpio_bank *bank = &gpio_bank[i];
ca828760 2162 u32 l = 0, gen, gen0, gen1;
0aed0435 2163 int j;
3ac4fa99 2164
0aed0435 2165 for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++)
8865b9b6
KH		 2166 clk_enable(bank->dbck);
2167
43ffcd9a
KH		 2168 if (!workaround_enabled)
2169 continue;
2170
3ac4fa99
JY		 2171 if (!(bank->enabled_non_wakeup_gpios))
2172 continue;
3f1686a9
TL		 2173
2174 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
2175 __raw_writel(bank->saved_fallingdetect,
3ac4fa99 2176 bank->base + OMAP24XX_GPIO_FALLINGDETECT);
3f1686a9 2177 __raw_writel(bank->saved_risingdetect,
3ac4fa99 2178 bank->base + OMAP24XX_GPIO_RISINGDETECT);
3f1686a9
TL		 2179 l = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
2180 }
2181
2182 if (cpu_is_omap44xx()) {
2183 __raw_writel(bank->saved_fallingdetect,
78a1a6d3 2184 bank->base + OMAP4_GPIO_FALLINGDETECT);
3f1686a9 2185 __raw_writel(bank->saved_risingdetect,
78a1a6d3 2186 bank->base + OMAP4_GPIO_RISINGDETECT);
3f1686a9
TL		 2187 l = __raw_readl(bank->base + OMAP4_GPIO_DATAIN);
2188 }
2189
3ac4fa99
JY		 2190 /* Check if any of the non-wakeup interrupt GPIOs have changed
2191 * state. If so, generate an IRQ by software. This is
2192 * horribly racy, but it's the best we can do to work around
2193 * this silicon bug. */
3ac4fa99 2194 l ^= bank->saved_datain;
a118b5f3 2195 l &= bank->enabled_non_wakeup_gpios;
82dbb9d3
EN		 2196
2197 /*
2198 * No need to generate IRQs for the rising edge for gpio IRQs
2199 * configured with falling edge only; and vice versa.
2200 */
2201 gen0 = l & bank->saved_fallingdetect;
2202 gen0 &= bank->saved_datain;
2203
2204 gen1 = l & bank->saved_risingdetect;
2205 gen1 &= ~(bank->saved_datain);
2206
2207 /* FIXME: Consider GPIO IRQs with level detections properly! */
2208 gen = l & (~(bank->saved_fallingdetect) &
2209 ~(bank->saved_risingdetect));
2210 /* Consider all GPIO IRQs needed to be updated */
2211 gen |= gen0 | gen1;
2212
2213 if (gen) {
3ac4fa99 2214 u32 old0, old1;
3f1686a9 2215
f00d6497 2216 if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
3f1686a9
TL		 2217 old0 = __raw_readl(bank->base +
2218 OMAP24XX_GPIO_LEVELDETECT0);
2219 old1 = __raw_readl(bank->base +
2220 OMAP24XX_GPIO_LEVELDETECT1);
f00d6497 2221 __raw_writel(old0 | gen, bank->base +
82dbb9d3 2222 OMAP24XX_GPIO_LEVELDETECT0);
f00d6497 2223 __raw_writel(old1 | gen, bank->base +
82dbb9d3 2224 OMAP24XX_GPIO_LEVELDETECT1);
f00d6497 2225 __raw_writel(old0, bank->base +
3f1686a9 2226 OMAP24XX_GPIO_LEVELDETECT0);
f00d6497 2227 __raw_writel(old1, bank->base +
3f1686a9
TL		 2228 OMAP24XX_GPIO_LEVELDETECT1);
2229 }
2230
2231 if (cpu_is_omap44xx()) {
2232 old0 = __raw_readl(bank->base +
78a1a6d3 2233 OMAP4_GPIO_LEVELDETECT0);
3f1686a9 2234 old1 = __raw_readl(bank->base +
78a1a6d3 2235 OMAP4_GPIO_LEVELDETECT1);
3f1686a9 2236 __raw_writel(old0 | l, bank->base +
78a1a6d3 2237 OMAP4_GPIO_LEVELDETECT0);
3f1686a9 2238 __raw_writel(old1 | l, bank->base +
78a1a6d3 2239 OMAP4_GPIO_LEVELDETECT1);
3f1686a9 2240 __raw_writel(old0, bank->base +
78a1a6d3 2241 OMAP4_GPIO_LEVELDETECT0);
3f1686a9 2242 __raw_writel(old1, bank->base +
78a1a6d3 2243 OMAP4_GPIO_LEVELDETECT1);
3f1686a9 2244 }
3ac4fa99
JY		 2245 }
2246 }
2247
2248}
2249
92105bb7
TL		 2250#endif
2251
a8eb7ca0 2252#ifdef CONFIG_ARCH_OMAP3
40c670f0
RN		 2253/* save the registers of bank 2-6 */
2254void omap_gpio_save_context(void)
2255{
2256 int i;
2257
2258 /* saving banks from 2-6 only since GPIO1 is in WKUP */
2259 for (i = 1; i < gpio_bank_count; i++) {
2260 struct gpio_bank *bank = &gpio_bank[i];
2261 gpio_context[i].sysconfig =
2262 __raw_readl(bank->base + OMAP24XX_GPIO_SYSCONFIG);
2263 gpio_context[i].irqenable1 =
2264 __raw_readl(bank->base + OMAP24XX_GPIO_IRQENABLE1);
2265 gpio_context[i].irqenable2 =
2266 __raw_readl(bank->base + OMAP24XX_GPIO_IRQENABLE2);
2267 gpio_context[i].wake_en =
2268 __raw_readl(bank->base + OMAP24XX_GPIO_WAKE_EN);
2269 gpio_context[i].ctrl =
2270 __raw_readl(bank->base + OMAP24XX_GPIO_CTRL);
2271 gpio_context[i].oe =
2272 __raw_readl(bank->base + OMAP24XX_GPIO_OE);
2273 gpio_context[i].leveldetect0 =
2274 __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0);
2275 gpio_context[i].leveldetect1 =
2276 __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
2277 gpio_context[i].risingdetect =
2278 __raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT);
2279 gpio_context[i].fallingdetect =
2280 __raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT);
2281 gpio_context[i].dataout =
2282 __raw_readl(bank->base + OMAP24XX_GPIO_DATAOUT);
40c670f0
RN		 2283 }
2284}
2285
2286/* restore the required registers of bank 2-6 */
2287void omap_gpio_restore_context(void)
2288{
2289 int i;
2290
2291 for (i = 1; i < gpio_bank_count; i++) {
2292 struct gpio_bank *bank = &gpio_bank[i];
2293 __raw_writel(gpio_context[i].sysconfig,
2294 bank->base + OMAP24XX_GPIO_SYSCONFIG);
2295 __raw_writel(gpio_context[i].irqenable1,
2296 bank->base + OMAP24XX_GPIO_IRQENABLE1);
2297 __raw_writel(gpio_context[i].irqenable2,
2298 bank->base + OMAP24XX_GPIO_IRQENABLE2);
2299 __raw_writel(gpio_context[i].wake_en,
2300 bank->base + OMAP24XX_GPIO_WAKE_EN);
2301 __raw_writel(gpio_context[i].ctrl,
2302 bank->base + OMAP24XX_GPIO_CTRL);
2303 __raw_writel(gpio_context[i].oe,
2304 bank->base + OMAP24XX_GPIO_OE);
2305 __raw_writel(gpio_context[i].leveldetect0,
2306 bank->base + OMAP24XX_GPIO_LEVELDETECT0);
2307 __raw_writel(gpio_context[i].leveldetect1,
2308 bank->base + OMAP24XX_GPIO_LEVELDETECT1);
2309 __raw_writel(gpio_context[i].risingdetect,
2310 bank->base + OMAP24XX_GPIO_RISINGDETECT);
2311 __raw_writel(gpio_context[i].fallingdetect,
2312 bank->base + OMAP24XX_GPIO_FALLINGDETECT);
2313 __raw_writel(gpio_context[i].dataout,
2314 bank->base + OMAP24XX_GPIO_DATAOUT);
40c670f0
RN		 2315 }
2316}
2317#endif
2318
5e1c5ff4
TL		 2319/*
2320 * This may get called early from board specific init
1a8bfa1e 2321 * for boards that have interrupts routed via FPGA.
5e1c5ff4 2322 */
277d58ef 2323int __init omap_gpio_init(void)
5e1c5ff4
TL		 2324{
2325 if (!initialized)
2326 return _omap_gpio_init();
2327 else
2328 return 0;
2329}
2330
92105bb7
TL		 2331static int __init omap_gpio_sysinit(void)
2332{
2333 int ret = 0;
2334
2335 if (!initialized)
2336 ret = _omap_gpio_init();
2337
11a78b79
DB		 2338 mpuio_init();
2339
140455fa 2340#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
5492fb1a 2341 if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
92105bb7
TL		 2342 if (ret == 0) {
2343 ret = sysdev_class_register(&omap_gpio_sysclass);
2344 if (ret == 0)
2345 ret = sysdev_register(&omap_gpio_device);
2346 }
2347 }
2348#endif
2349
2350 return ret;
2351}
2352
92105bb7 2353arch_initcall(omap_gpio_sysinit);
Linux kernel - Deliverables
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