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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 TL |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
5e1c5ff4 TL |
14 | #include <linux/init.h> |
15 | #include <linux/module.h> | |
5e1c5ff4 | 16 | #include <linux/interrupt.h> |
92105bb7 TL |
17 | #include <linux/sysdev.h> |
18 | #include <linux/err.h> | |
f8ce2547 | 19 | #include <linux/clk.h> |
5e1c5ff4 TL |
20 | |
21 | #include <asm/hardware.h> | |
22 | #include <asm/irq.h> | |
23 | #include <asm/arch/irqs.h> | |
24 | #include <asm/arch/gpio.h> | |
25 | #include <asm/mach/irq.h> | |
26 | ||
27 | #include <asm/io.h> | |
28 | ||
29 | /* | |
30 | * OMAP1510 GPIO registers | |
31 | */ | |
92105bb7 | 32 | #define OMAP1510_GPIO_BASE (void __iomem *)0xfffce000 |
5e1c5ff4 TL |
33 | #define OMAP1510_GPIO_DATA_INPUT 0x00 |
34 | #define OMAP1510_GPIO_DATA_OUTPUT 0x04 | |
35 | #define OMAP1510_GPIO_DIR_CONTROL 0x08 | |
36 | #define OMAP1510_GPIO_INT_CONTROL 0x0c | |
37 | #define OMAP1510_GPIO_INT_MASK 0x10 | |
38 | #define OMAP1510_GPIO_INT_STATUS 0x14 | |
39 | #define OMAP1510_GPIO_PIN_CONTROL 0x18 | |
40 | ||
41 | #define OMAP1510_IH_GPIO_BASE 64 | |
42 | ||
43 | /* | |
44 | * OMAP1610 specific GPIO registers | |
45 | */ | |
92105bb7 TL |
46 | #define OMAP1610_GPIO1_BASE (void __iomem *)0xfffbe400 |
47 | #define OMAP1610_GPIO2_BASE (void __iomem *)0xfffbec00 | |
48 | #define OMAP1610_GPIO3_BASE (void __iomem *)0xfffbb400 | |
49 | #define OMAP1610_GPIO4_BASE (void __iomem *)0xfffbbc00 | |
5e1c5ff4 TL |
50 | #define OMAP1610_GPIO_REVISION 0x0000 |
51 | #define OMAP1610_GPIO_SYSCONFIG 0x0010 | |
52 | #define OMAP1610_GPIO_SYSSTATUS 0x0014 | |
53 | #define OMAP1610_GPIO_IRQSTATUS1 0x0018 | |
54 | #define OMAP1610_GPIO_IRQENABLE1 0x001c | |
92105bb7 | 55 | #define OMAP1610_GPIO_WAKEUPENABLE 0x0028 |
5e1c5ff4 TL |
56 | #define OMAP1610_GPIO_DATAIN 0x002c |
57 | #define OMAP1610_GPIO_DATAOUT 0x0030 | |
58 | #define OMAP1610_GPIO_DIRECTION 0x0034 | |
59 | #define OMAP1610_GPIO_EDGE_CTRL1 0x0038 | |
60 | #define OMAP1610_GPIO_EDGE_CTRL2 0x003c | |
61 | #define OMAP1610_GPIO_CLEAR_IRQENABLE1 0x009c | |
92105bb7 | 62 | #define OMAP1610_GPIO_CLEAR_WAKEUPENA 0x00a8 |
5e1c5ff4 TL |
63 | #define OMAP1610_GPIO_CLEAR_DATAOUT 0x00b0 |
64 | #define OMAP1610_GPIO_SET_IRQENABLE1 0x00dc | |
92105bb7 | 65 | #define OMAP1610_GPIO_SET_WAKEUPENA 0x00e8 |
5e1c5ff4 TL |
66 | #define OMAP1610_GPIO_SET_DATAOUT 0x00f0 |
67 | ||
68 | /* | |
69 | * OMAP730 specific GPIO registers | |
70 | */ | |
92105bb7 TL |
71 | #define OMAP730_GPIO1_BASE (void __iomem *)0xfffbc000 |
72 | #define OMAP730_GPIO2_BASE (void __iomem *)0xfffbc800 | |
73 | #define OMAP730_GPIO3_BASE (void __iomem *)0xfffbd000 | |
74 | #define OMAP730_GPIO4_BASE (void __iomem *)0xfffbd800 | |
75 | #define OMAP730_GPIO5_BASE (void __iomem *)0xfffbe000 | |
76 | #define OMAP730_GPIO6_BASE (void __iomem *)0xfffbe800 | |
5e1c5ff4 TL |
77 | #define OMAP730_GPIO_DATA_INPUT 0x00 |
78 | #define OMAP730_GPIO_DATA_OUTPUT 0x04 | |
79 | #define OMAP730_GPIO_DIR_CONTROL 0x08 | |
80 | #define OMAP730_GPIO_INT_CONTROL 0x0c | |
81 | #define OMAP730_GPIO_INT_MASK 0x10 | |
82 | #define OMAP730_GPIO_INT_STATUS 0x14 | |
83 | ||
92105bb7 TL |
84 | /* |
85 | * omap24xx specific GPIO registers | |
86 | */ | |
56a25641 SMK |
87 | #define OMAP242X_GPIO1_BASE (void __iomem *)0x48018000 |
88 | #define OMAP242X_GPIO2_BASE (void __iomem *)0x4801a000 | |
89 | #define OMAP242X_GPIO3_BASE (void __iomem *)0x4801c000 | |
90 | #define OMAP242X_GPIO4_BASE (void __iomem *)0x4801e000 | |
91 | ||
92 | #define OMAP243X_GPIO1_BASE (void __iomem *)0x4900C000 | |
93 | #define OMAP243X_GPIO2_BASE (void __iomem *)0x4900E000 | |
94 | #define OMAP243X_GPIO3_BASE (void __iomem *)0x49010000 | |
95 | #define OMAP243X_GPIO4_BASE (void __iomem *)0x49012000 | |
96 | #define OMAP243X_GPIO5_BASE (void __iomem *)0x480B6000 | |
97 | ||
92105bb7 TL |
98 | #define OMAP24XX_GPIO_REVISION 0x0000 |
99 | #define OMAP24XX_GPIO_SYSCONFIG 0x0010 | |
100 | #define OMAP24XX_GPIO_SYSSTATUS 0x0014 | |
101 | #define OMAP24XX_GPIO_IRQSTATUS1 0x0018 | |
bee7930f HD |
102 | #define OMAP24XX_GPIO_IRQSTATUS2 0x0028 |
103 | #define OMAP24XX_GPIO_IRQENABLE2 0x002c | |
92105bb7 TL |
104 | #define OMAP24XX_GPIO_IRQENABLE1 0x001c |
105 | #define OMAP24XX_GPIO_CTRL 0x0030 | |
106 | #define OMAP24XX_GPIO_OE 0x0034 | |
107 | #define OMAP24XX_GPIO_DATAIN 0x0038 | |
108 | #define OMAP24XX_GPIO_DATAOUT 0x003c | |
109 | #define OMAP24XX_GPIO_LEVELDETECT0 0x0040 | |
110 | #define OMAP24XX_GPIO_LEVELDETECT1 0x0044 | |
111 | #define OMAP24XX_GPIO_RISINGDETECT 0x0048 | |
112 | #define OMAP24XX_GPIO_FALLINGDETECT 0x004c | |
113 | #define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060 | |
114 | #define OMAP24XX_GPIO_SETIRQENABLE1 0x0064 | |
115 | #define OMAP24XX_GPIO_CLEARWKUENA 0x0080 | |
116 | #define OMAP24XX_GPIO_SETWKUENA 0x0084 | |
117 | #define OMAP24XX_GPIO_CLEARDATAOUT 0x0090 | |
118 | #define OMAP24XX_GPIO_SETDATAOUT 0x0094 | |
119 | ||
5492fb1a SMK |
120 | /* |
121 | * omap34xx specific GPIO registers | |
122 | */ | |
123 | ||
124 | #define OMAP34XX_GPIO1_BASE (void __iomem *)0x48310000 | |
125 | #define OMAP34XX_GPIO2_BASE (void __iomem *)0x49050000 | |
126 | #define OMAP34XX_GPIO3_BASE (void __iomem *)0x49052000 | |
127 | #define OMAP34XX_GPIO4_BASE (void __iomem *)0x49054000 | |
128 | #define OMAP34XX_GPIO5_BASE (void __iomem *)0x49056000 | |
129 | #define OMAP34XX_GPIO6_BASE (void __iomem *)0x49058000 | |
130 | ||
131 | ||
5e1c5ff4 | 132 | struct gpio_bank { |
92105bb7 | 133 | void __iomem *base; |
5e1c5ff4 TL |
134 | u16 irq; |
135 | u16 virtual_irq_start; | |
92105bb7 | 136 | int method; |
5e1c5ff4 | 137 | u32 reserved_map; |
5492fb1a | 138 | #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
139 | u32 suspend_wakeup; |
140 | u32 saved_wakeup; | |
3ac4fa99 | 141 | #endif |
5492fb1a | 142 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 JY |
143 | u32 non_wakeup_gpios; |
144 | u32 enabled_non_wakeup_gpios; | |
145 | ||
146 | u32 saved_datain; | |
147 | u32 saved_fallingdetect; | |
148 | u32 saved_risingdetect; | |
149 | #endif | |
5e1c5ff4 TL |
150 | spinlock_t lock; |
151 | }; | |
152 | ||
153 | #define METHOD_MPUIO 0 | |
154 | #define METHOD_GPIO_1510 1 | |
155 | #define METHOD_GPIO_1610 2 | |
156 | #define METHOD_GPIO_730 3 | |
92105bb7 | 157 | #define METHOD_GPIO_24XX 4 |
5e1c5ff4 | 158 | |
92105bb7 | 159 | #ifdef CONFIG_ARCH_OMAP16XX |
5e1c5ff4 TL |
160 | static struct gpio_bank gpio_bank_1610[5] = { |
161 | { OMAP_MPUIO_BASE, INT_MPUIO, IH_MPUIO_BASE, METHOD_MPUIO}, | |
162 | { OMAP1610_GPIO1_BASE, INT_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_1610 }, | |
163 | { OMAP1610_GPIO2_BASE, INT_1610_GPIO_BANK2, IH_GPIO_BASE + 16, METHOD_GPIO_1610 }, | |
164 | { OMAP1610_GPIO3_BASE, INT_1610_GPIO_BANK3, IH_GPIO_BASE + 32, METHOD_GPIO_1610 }, | |
165 | { OMAP1610_GPIO4_BASE, INT_1610_GPIO_BANK4, IH_GPIO_BASE + 48, METHOD_GPIO_1610 }, | |
166 | }; | |
167 | #endif | |
168 | ||
1a8bfa1e | 169 | #ifdef CONFIG_ARCH_OMAP15XX |
5e1c5ff4 TL |
170 | static struct gpio_bank gpio_bank_1510[2] = { |
171 | { OMAP_MPUIO_BASE, INT_MPUIO, IH_MPUIO_BASE, METHOD_MPUIO }, | |
172 | { OMAP1510_GPIO_BASE, INT_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_1510 } | |
173 | }; | |
174 | #endif | |
175 | ||
176 | #ifdef CONFIG_ARCH_OMAP730 | |
177 | static struct gpio_bank gpio_bank_730[7] = { | |
178 | { OMAP_MPUIO_BASE, INT_730_MPUIO, IH_MPUIO_BASE, METHOD_MPUIO }, | |
179 | { OMAP730_GPIO1_BASE, INT_730_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_730 }, | |
180 | { OMAP730_GPIO2_BASE, INT_730_GPIO_BANK2, IH_GPIO_BASE + 32, METHOD_GPIO_730 }, | |
181 | { OMAP730_GPIO3_BASE, INT_730_GPIO_BANK3, IH_GPIO_BASE + 64, METHOD_GPIO_730 }, | |
182 | { OMAP730_GPIO4_BASE, INT_730_GPIO_BANK4, IH_GPIO_BASE + 96, METHOD_GPIO_730 }, | |
183 | { OMAP730_GPIO5_BASE, INT_730_GPIO_BANK5, IH_GPIO_BASE + 128, METHOD_GPIO_730 }, | |
184 | { OMAP730_GPIO6_BASE, INT_730_GPIO_BANK6, IH_GPIO_BASE + 160, METHOD_GPIO_730 }, | |
185 | }; | |
186 | #endif | |
187 | ||
92105bb7 | 188 | #ifdef CONFIG_ARCH_OMAP24XX |
56a25641 SMK |
189 | |
190 | static struct gpio_bank gpio_bank_242x[4] = { | |
191 | { OMAP242X_GPIO1_BASE, INT_24XX_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_24XX }, | |
192 | { OMAP242X_GPIO2_BASE, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32, METHOD_GPIO_24XX }, | |
193 | { OMAP242X_GPIO3_BASE, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64, METHOD_GPIO_24XX }, | |
194 | { OMAP242X_GPIO4_BASE, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96, METHOD_GPIO_24XX }, | |
92105bb7 | 195 | }; |
56a25641 SMK |
196 | |
197 | static struct gpio_bank gpio_bank_243x[5] = { | |
198 | { OMAP243X_GPIO1_BASE, INT_24XX_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_24XX }, | |
199 | { OMAP243X_GPIO2_BASE, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32, METHOD_GPIO_24XX }, | |
200 | { OMAP243X_GPIO3_BASE, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64, METHOD_GPIO_24XX }, | |
201 | { OMAP243X_GPIO4_BASE, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96, METHOD_GPIO_24XX }, | |
202 | { OMAP243X_GPIO5_BASE, INT_24XX_GPIO_BANK5, IH_GPIO_BASE + 128, METHOD_GPIO_24XX }, | |
203 | }; | |
204 | ||
92105bb7 TL |
205 | #endif |
206 | ||
5492fb1a SMK |
207 | #ifdef CONFIG_ARCH_OMAP34XX |
208 | static struct gpio_bank gpio_bank_34xx[6] = { | |
209 | { OMAP34XX_GPIO1_BASE, INT_34XX_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_24XX }, | |
210 | { OMAP34XX_GPIO2_BASE, INT_34XX_GPIO_BANK2, IH_GPIO_BASE + 32, METHOD_GPIO_24XX }, | |
211 | { OMAP34XX_GPIO3_BASE, INT_34XX_GPIO_BANK3, IH_GPIO_BASE + 64, METHOD_GPIO_24XX }, | |
212 | { OMAP34XX_GPIO4_BASE, INT_34XX_GPIO_BANK4, IH_GPIO_BASE + 96, METHOD_GPIO_24XX }, | |
213 | { OMAP34XX_GPIO5_BASE, INT_34XX_GPIO_BANK5, IH_GPIO_BASE + 128, METHOD_GPIO_24XX }, | |
214 | { OMAP34XX_GPIO6_BASE, INT_34XX_GPIO_BANK6, IH_GPIO_BASE + 160, METHOD_GPIO_24XX }, | |
215 | }; | |
216 | ||
217 | #endif | |
218 | ||
5e1c5ff4 TL |
219 | static struct gpio_bank *gpio_bank; |
220 | static int gpio_bank_count; | |
221 | ||
222 | static inline struct gpio_bank *get_gpio_bank(int gpio) | |
223 | { | |
6e60e79a | 224 | if (cpu_is_omap15xx()) { |
5e1c5ff4 TL |
225 | if (OMAP_GPIO_IS_MPUIO(gpio)) |
226 | return &gpio_bank[0]; | |
227 | return &gpio_bank[1]; | |
228 | } | |
5e1c5ff4 TL |
229 | if (cpu_is_omap16xx()) { |
230 | if (OMAP_GPIO_IS_MPUIO(gpio)) | |
231 | return &gpio_bank[0]; | |
232 | return &gpio_bank[1 + (gpio >> 4)]; | |
233 | } | |
5e1c5ff4 TL |
234 | if (cpu_is_omap730()) { |
235 | if (OMAP_GPIO_IS_MPUIO(gpio)) | |
236 | return &gpio_bank[0]; | |
237 | return &gpio_bank[1 + (gpio >> 5)]; | |
238 | } | |
92105bb7 TL |
239 | if (cpu_is_omap24xx()) |
240 | return &gpio_bank[gpio >> 5]; | |
5492fb1a SMK |
241 | if (cpu_is_omap34xx()) |
242 | return &gpio_bank[gpio >> 5]; | |
5e1c5ff4 TL |
243 | } |
244 | ||
245 | static inline int get_gpio_index(int gpio) | |
246 | { | |
247 | if (cpu_is_omap730()) | |
248 | return gpio & 0x1f; | |
92105bb7 TL |
249 | if (cpu_is_omap24xx()) |
250 | return gpio & 0x1f; | |
5492fb1a SMK |
251 | if (cpu_is_omap34xx()) |
252 | return gpio & 0x1f; | |
92105bb7 | 253 | return gpio & 0x0f; |
5e1c5ff4 TL |
254 | } |
255 | ||
256 | static inline int gpio_valid(int gpio) | |
257 | { | |
258 | if (gpio < 0) | |
259 | return -1; | |
d11ac979 | 260 | if (cpu_class_is_omap1() && OMAP_GPIO_IS_MPUIO(gpio)) { |
193e68be | 261 | if (gpio >= OMAP_MAX_GPIO_LINES + 16) |
5e1c5ff4 TL |
262 | return -1; |
263 | return 0; | |
264 | } | |
6e60e79a | 265 | if (cpu_is_omap15xx() && gpio < 16) |
5e1c5ff4 | 266 | return 0; |
5e1c5ff4 TL |
267 | if ((cpu_is_omap16xx()) && gpio < 64) |
268 | return 0; | |
5e1c5ff4 TL |
269 | if (cpu_is_omap730() && gpio < 192) |
270 | return 0; | |
92105bb7 TL |
271 | if (cpu_is_omap24xx() && gpio < 128) |
272 | return 0; | |
5492fb1a SMK |
273 | if (cpu_is_omap34xx() && gpio < 160) |
274 | return 0; | |
5e1c5ff4 TL |
275 | return -1; |
276 | } | |
277 | ||
278 | static int check_gpio(int gpio) | |
279 | { | |
280 | if (unlikely(gpio_valid(gpio)) < 0) { | |
281 | printk(KERN_ERR "omap-gpio: invalid GPIO %d\n", gpio); | |
282 | dump_stack(); | |
283 | return -1; | |
284 | } | |
285 | return 0; | |
286 | } | |
287 | ||
288 | static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input) | |
289 | { | |
92105bb7 | 290 | void __iomem *reg = bank->base; |
5e1c5ff4 TL |
291 | u32 l; |
292 | ||
293 | switch (bank->method) { | |
e5c56ed3 | 294 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
295 | case METHOD_MPUIO: |
296 | reg += OMAP_MPUIO_IO_CNTL; | |
297 | break; | |
e5c56ed3 DB |
298 | #endif |
299 | #ifdef CONFIG_ARCH_OMAP15XX | |
5e1c5ff4 TL |
300 | case METHOD_GPIO_1510: |
301 | reg += OMAP1510_GPIO_DIR_CONTROL; | |
302 | break; | |
e5c56ed3 DB |
303 | #endif |
304 | #ifdef CONFIG_ARCH_OMAP16XX | |
5e1c5ff4 TL |
305 | case METHOD_GPIO_1610: |
306 | reg += OMAP1610_GPIO_DIRECTION; | |
307 | break; | |
e5c56ed3 DB |
308 | #endif |
309 | #ifdef CONFIG_ARCH_OMAP730 | |
5e1c5ff4 TL |
310 | case METHOD_GPIO_730: |
311 | reg += OMAP730_GPIO_DIR_CONTROL; | |
312 | break; | |
e5c56ed3 | 313 | #endif |
5492fb1a | 314 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
315 | case METHOD_GPIO_24XX: |
316 | reg += OMAP24XX_GPIO_OE; | |
317 | break; | |
e5c56ed3 DB |
318 | #endif |
319 | default: | |
320 | WARN_ON(1); | |
321 | return; | |
5e1c5ff4 TL |
322 | } |
323 | l = __raw_readl(reg); | |
324 | if (is_input) | |
325 | l |= 1 << gpio; | |
326 | else | |
327 | l &= ~(1 << gpio); | |
328 | __raw_writel(l, reg); | |
329 | } | |
330 | ||
331 | void omap_set_gpio_direction(int gpio, int is_input) | |
332 | { | |
333 | struct gpio_bank *bank; | |
334 | ||
335 | if (check_gpio(gpio) < 0) | |
336 | return; | |
337 | bank = get_gpio_bank(gpio); | |
338 | spin_lock(&bank->lock); | |
339 | _set_gpio_direction(bank, get_gpio_index(gpio), is_input); | |
340 | spin_unlock(&bank->lock); | |
341 | } | |
342 | ||
343 | static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable) | |
344 | { | |
92105bb7 | 345 | void __iomem *reg = bank->base; |
5e1c5ff4 TL |
346 | u32 l = 0; |
347 | ||
348 | switch (bank->method) { | |
e5c56ed3 | 349 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
350 | case METHOD_MPUIO: |
351 | reg += OMAP_MPUIO_OUTPUT; | |
352 | l = __raw_readl(reg); | |
353 | if (enable) | |
354 | l |= 1 << gpio; | |
355 | else | |
356 | l &= ~(1 << gpio); | |
357 | break; | |
e5c56ed3 DB |
358 | #endif |
359 | #ifdef CONFIG_ARCH_OMAP15XX | |
5e1c5ff4 TL |
360 | case METHOD_GPIO_1510: |
361 | reg += OMAP1510_GPIO_DATA_OUTPUT; | |
362 | l = __raw_readl(reg); | |
363 | if (enable) | |
364 | l |= 1 << gpio; | |
365 | else | |
366 | l &= ~(1 << gpio); | |
367 | break; | |
e5c56ed3 DB |
368 | #endif |
369 | #ifdef CONFIG_ARCH_OMAP16XX | |
5e1c5ff4 TL |
370 | case METHOD_GPIO_1610: |
371 | if (enable) | |
372 | reg += OMAP1610_GPIO_SET_DATAOUT; | |
373 | else | |
374 | reg += OMAP1610_GPIO_CLEAR_DATAOUT; | |
375 | l = 1 << gpio; | |
376 | break; | |
e5c56ed3 DB |
377 | #endif |
378 | #ifdef CONFIG_ARCH_OMAP730 | |
5e1c5ff4 TL |
379 | case METHOD_GPIO_730: |
380 | reg += OMAP730_GPIO_DATA_OUTPUT; | |
381 | l = __raw_readl(reg); | |
382 | if (enable) | |
383 | l |= 1 << gpio; | |
384 | else | |
385 | l &= ~(1 << gpio); | |
386 | break; | |
e5c56ed3 | 387 | #endif |
5492fb1a | 388 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
389 | case METHOD_GPIO_24XX: |
390 | if (enable) | |
391 | reg += OMAP24XX_GPIO_SETDATAOUT; | |
392 | else | |
393 | reg += OMAP24XX_GPIO_CLEARDATAOUT; | |
394 | l = 1 << gpio; | |
395 | break; | |
e5c56ed3 | 396 | #endif |
5e1c5ff4 | 397 | default: |
e5c56ed3 | 398 | WARN_ON(1); |
5e1c5ff4 TL |
399 | return; |
400 | } | |
401 | __raw_writel(l, reg); | |
402 | } | |
403 | ||
404 | void omap_set_gpio_dataout(int gpio, int enable) | |
405 | { | |
406 | struct gpio_bank *bank; | |
407 | ||
408 | if (check_gpio(gpio) < 0) | |
409 | return; | |
410 | bank = get_gpio_bank(gpio); | |
411 | spin_lock(&bank->lock); | |
412 | _set_gpio_dataout(bank, get_gpio_index(gpio), enable); | |
413 | spin_unlock(&bank->lock); | |
414 | } | |
415 | ||
416 | int omap_get_gpio_datain(int gpio) | |
417 | { | |
418 | struct gpio_bank *bank; | |
92105bb7 | 419 | void __iomem *reg; |
5e1c5ff4 TL |
420 | |
421 | if (check_gpio(gpio) < 0) | |
e5c56ed3 | 422 | return -EINVAL; |
5e1c5ff4 TL |
423 | bank = get_gpio_bank(gpio); |
424 | reg = bank->base; | |
425 | switch (bank->method) { | |
e5c56ed3 | 426 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
427 | case METHOD_MPUIO: |
428 | reg += OMAP_MPUIO_INPUT_LATCH; | |
429 | break; | |
e5c56ed3 DB |
430 | #endif |
431 | #ifdef CONFIG_ARCH_OMAP15XX | |
5e1c5ff4 TL |
432 | case METHOD_GPIO_1510: |
433 | reg += OMAP1510_GPIO_DATA_INPUT; | |
434 | break; | |
e5c56ed3 DB |
435 | #endif |
436 | #ifdef CONFIG_ARCH_OMAP16XX | |
5e1c5ff4 TL |
437 | case METHOD_GPIO_1610: |
438 | reg += OMAP1610_GPIO_DATAIN; | |
439 | break; | |
e5c56ed3 DB |
440 | #endif |
441 | #ifdef CONFIG_ARCH_OMAP730 | |
5e1c5ff4 TL |
442 | case METHOD_GPIO_730: |
443 | reg += OMAP730_GPIO_DATA_INPUT; | |
444 | break; | |
e5c56ed3 | 445 | #endif |
5492fb1a | 446 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
447 | case METHOD_GPIO_24XX: |
448 | reg += OMAP24XX_GPIO_DATAIN; | |
449 | break; | |
e5c56ed3 | 450 | #endif |
5e1c5ff4 | 451 | default: |
e5c56ed3 | 452 | return -EINVAL; |
5e1c5ff4 | 453 | } |
92105bb7 TL |
454 | return (__raw_readl(reg) |
455 | & (1 << get_gpio_index(gpio))) != 0; | |
5e1c5ff4 TL |
456 | } |
457 | ||
92105bb7 TL |
458 | #define MOD_REG_BIT(reg, bit_mask, set) \ |
459 | do { \ | |
460 | int l = __raw_readl(base + reg); \ | |
461 | if (set) l |= bit_mask; \ | |
462 | else l &= ~bit_mask; \ | |
463 | __raw_writel(l, base + reg); \ | |
464 | } while(0) | |
465 | ||
5492fb1a | 466 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 | 467 | static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger) |
5e1c5ff4 | 468 | { |
3ac4fa99 | 469 | void __iomem *base = bank->base; |
92105bb7 TL |
470 | u32 gpio_bit = 1 << gpio; |
471 | ||
472 | MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT0, gpio_bit, | |
6e60e79a | 473 | trigger & __IRQT_LOWLVL); |
92105bb7 | 474 | MOD_REG_BIT(OMAP24XX_GPIO_LEVELDETECT1, gpio_bit, |
6e60e79a | 475 | trigger & __IRQT_HIGHLVL); |
92105bb7 | 476 | MOD_REG_BIT(OMAP24XX_GPIO_RISINGDETECT, gpio_bit, |
6e60e79a | 477 | trigger & __IRQT_RISEDGE); |
92105bb7 | 478 | MOD_REG_BIT(OMAP24XX_GPIO_FALLINGDETECT, gpio_bit, |
6e60e79a | 479 | trigger & __IRQT_FALEDGE); |
3ac4fa99 JY |
480 | if (likely(!(bank->non_wakeup_gpios & gpio_bit))) { |
481 | if (trigger != 0) | |
482 | __raw_writel(1 << gpio, bank->base + OMAP24XX_GPIO_SETWKUENA); | |
483 | else | |
484 | __raw_writel(1 << gpio, bank->base + OMAP24XX_GPIO_CLEARWKUENA); | |
485 | } else { | |
486 | if (trigger != 0) | |
487 | bank->enabled_non_wakeup_gpios |= gpio_bit; | |
488 | else | |
489 | bank->enabled_non_wakeup_gpios &= ~gpio_bit; | |
490 | } | |
10dd5ce2 | 491 | /* FIXME: Possibly do 'set_irq_handler(j, handle_level_irq)' if only level |
92105bb7 TL |
492 | * triggering requested. */ |
493 | } | |
3ac4fa99 | 494 | #endif |
92105bb7 TL |
495 | |
496 | static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger) | |
497 | { | |
498 | void __iomem *reg = bank->base; | |
499 | u32 l = 0; | |
5e1c5ff4 TL |
500 | |
501 | switch (bank->method) { | |
e5c56ed3 | 502 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
503 | case METHOD_MPUIO: |
504 | reg += OMAP_MPUIO_GPIO_INT_EDGE; | |
505 | l = __raw_readl(reg); | |
6e60e79a | 506 | if (trigger & __IRQT_RISEDGE) |
5e1c5ff4 | 507 | l |= 1 << gpio; |
6e60e79a | 508 | else if (trigger & __IRQT_FALEDGE) |
5e1c5ff4 | 509 | l &= ~(1 << gpio); |
92105bb7 TL |
510 | else |
511 | goto bad; | |
5e1c5ff4 | 512 | break; |
e5c56ed3 DB |
513 | #endif |
514 | #ifdef CONFIG_ARCH_OMAP15XX | |
5e1c5ff4 TL |
515 | case METHOD_GPIO_1510: |
516 | reg += OMAP1510_GPIO_INT_CONTROL; | |
517 | l = __raw_readl(reg); | |
6e60e79a | 518 | if (trigger & __IRQT_RISEDGE) |
5e1c5ff4 | 519 | l |= 1 << gpio; |
6e60e79a | 520 | else if (trigger & __IRQT_FALEDGE) |
5e1c5ff4 | 521 | l &= ~(1 << gpio); |
92105bb7 TL |
522 | else |
523 | goto bad; | |
5e1c5ff4 | 524 | break; |
e5c56ed3 | 525 | #endif |
3ac4fa99 | 526 | #ifdef CONFIG_ARCH_OMAP16XX |
5e1c5ff4 | 527 | case METHOD_GPIO_1610: |
5e1c5ff4 TL |
528 | if (gpio & 0x08) |
529 | reg += OMAP1610_GPIO_EDGE_CTRL2; | |
530 | else | |
531 | reg += OMAP1610_GPIO_EDGE_CTRL1; | |
532 | gpio &= 0x07; | |
533 | l = __raw_readl(reg); | |
534 | l &= ~(3 << (gpio << 1)); | |
6e60e79a TL |
535 | if (trigger & __IRQT_RISEDGE) |
536 | l |= 2 << (gpio << 1); | |
537 | if (trigger & __IRQT_FALEDGE) | |
538 | l |= 1 << (gpio << 1); | |
3ac4fa99 JY |
539 | if (trigger) |
540 | /* Enable wake-up during idle for dynamic tick */ | |
541 | __raw_writel(1 << gpio, bank->base + OMAP1610_GPIO_SET_WAKEUPENA); | |
542 | else | |
543 | __raw_writel(1 << gpio, bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA); | |
5e1c5ff4 | 544 | break; |
3ac4fa99 JY |
545 | #endif |
546 | #ifdef CONFIG_ARCH_OMAP730 | |
5e1c5ff4 TL |
547 | case METHOD_GPIO_730: |
548 | reg += OMAP730_GPIO_INT_CONTROL; | |
549 | l = __raw_readl(reg); | |
6e60e79a | 550 | if (trigger & __IRQT_RISEDGE) |
5e1c5ff4 | 551 | l |= 1 << gpio; |
6e60e79a | 552 | else if (trigger & __IRQT_FALEDGE) |
5e1c5ff4 | 553 | l &= ~(1 << gpio); |
92105bb7 TL |
554 | else |
555 | goto bad; | |
556 | break; | |
3ac4fa99 | 557 | #endif |
5492fb1a | 558 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 | 559 | case METHOD_GPIO_24XX: |
3ac4fa99 | 560 | set_24xx_gpio_triggering(bank, gpio, trigger); |
5e1c5ff4 | 561 | break; |
3ac4fa99 | 562 | #endif |
5e1c5ff4 | 563 | default: |
92105bb7 | 564 | goto bad; |
5e1c5ff4 | 565 | } |
92105bb7 TL |
566 | __raw_writel(l, reg); |
567 | return 0; | |
568 | bad: | |
569 | return -EINVAL; | |
5e1c5ff4 TL |
570 | } |
571 | ||
92105bb7 | 572 | static int gpio_irq_type(unsigned irq, unsigned type) |
5e1c5ff4 TL |
573 | { |
574 | struct gpio_bank *bank; | |
92105bb7 TL |
575 | unsigned gpio; |
576 | int retval; | |
577 | ||
5492fb1a | 578 | if (!cpu_class_is_omap2() && irq > IH_MPUIO_BASE) |
92105bb7 TL |
579 | gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE); |
580 | else | |
581 | gpio = irq - IH_GPIO_BASE; | |
5e1c5ff4 TL |
582 | |
583 | if (check_gpio(gpio) < 0) | |
92105bb7 TL |
584 | return -EINVAL; |
585 | ||
e5c56ed3 | 586 | if (type & ~IRQ_TYPE_SENSE_MASK) |
6e60e79a | 587 | return -EINVAL; |
e5c56ed3 DB |
588 | |
589 | /* OMAP1 allows only only edge triggering */ | |
5492fb1a | 590 | if (!cpu_class_is_omap2() |
e5c56ed3 | 591 | && (type & (IRQ_TYPE_LEVEL_LOW|IRQ_TYPE_LEVEL_HIGH))) |
92105bb7 TL |
592 | return -EINVAL; |
593 | ||
58781016 | 594 | bank = get_irq_chip_data(irq); |
5e1c5ff4 | 595 | spin_lock(&bank->lock); |
92105bb7 | 596 | retval = _set_gpio_triggering(bank, get_gpio_index(gpio), type); |
b9772a22 DB |
597 | if (retval == 0) { |
598 | irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK; | |
599 | irq_desc[irq].status |= type; | |
600 | } | |
5e1c5ff4 | 601 | spin_unlock(&bank->lock); |
92105bb7 | 602 | return retval; |
5e1c5ff4 TL |
603 | } |
604 | ||
605 | static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask) | |
606 | { | |
92105bb7 | 607 | void __iomem *reg = bank->base; |
5e1c5ff4 TL |
608 | |
609 | switch (bank->method) { | |
e5c56ed3 | 610 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
611 | case METHOD_MPUIO: |
612 | /* MPUIO irqstatus is reset by reading the status register, | |
613 | * so do nothing here */ | |
614 | return; | |
e5c56ed3 DB |
615 | #endif |
616 | #ifdef CONFIG_ARCH_OMAP15XX | |
5e1c5ff4 TL |
617 | case METHOD_GPIO_1510: |
618 | reg += OMAP1510_GPIO_INT_STATUS; | |
619 | break; | |
e5c56ed3 DB |
620 | #endif |
621 | #ifdef CONFIG_ARCH_OMAP16XX | |
5e1c5ff4 TL |
622 | case METHOD_GPIO_1610: |
623 | reg += OMAP1610_GPIO_IRQSTATUS1; | |
624 | break; | |
e5c56ed3 DB |
625 | #endif |
626 | #ifdef CONFIG_ARCH_OMAP730 | |
5e1c5ff4 TL |
627 | case METHOD_GPIO_730: |
628 | reg += OMAP730_GPIO_INT_STATUS; | |
629 | break; | |
e5c56ed3 | 630 | #endif |
5492fb1a | 631 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
632 | case METHOD_GPIO_24XX: |
633 | reg += OMAP24XX_GPIO_IRQSTATUS1; | |
634 | break; | |
e5c56ed3 | 635 | #endif |
5e1c5ff4 | 636 | default: |
e5c56ed3 | 637 | WARN_ON(1); |
5e1c5ff4 TL |
638 | return; |
639 | } | |
640 | __raw_writel(gpio_mask, reg); | |
bee7930f HD |
641 | |
642 | /* Workaround for clearing DSP GPIO interrupts to allow retention */ | |
5492fb1a SMK |
643 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
644 | if (cpu_is_omap24xx() || cpu_is_omap34xx()) | |
bee7930f | 645 | __raw_writel(gpio_mask, bank->base + OMAP24XX_GPIO_IRQSTATUS2); |
5492fb1a | 646 | #endif |
5e1c5ff4 TL |
647 | } |
648 | ||
649 | static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio) | |
650 | { | |
651 | _clear_gpio_irqbank(bank, 1 << get_gpio_index(gpio)); | |
652 | } | |
653 | ||
ea6dedd7 ID |
654 | static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank) |
655 | { | |
656 | void __iomem *reg = bank->base; | |
99c47707 ID |
657 | int inv = 0; |
658 | u32 l; | |
659 | u32 mask; | |
ea6dedd7 ID |
660 | |
661 | switch (bank->method) { | |
e5c56ed3 | 662 | #ifdef CONFIG_ARCH_OMAP1 |
ea6dedd7 ID |
663 | case METHOD_MPUIO: |
664 | reg += OMAP_MPUIO_GPIO_MASKIT; | |
99c47707 ID |
665 | mask = 0xffff; |
666 | inv = 1; | |
ea6dedd7 | 667 | break; |
e5c56ed3 DB |
668 | #endif |
669 | #ifdef CONFIG_ARCH_OMAP15XX | |
ea6dedd7 ID |
670 | case METHOD_GPIO_1510: |
671 | reg += OMAP1510_GPIO_INT_MASK; | |
99c47707 ID |
672 | mask = 0xffff; |
673 | inv = 1; | |
ea6dedd7 | 674 | break; |
e5c56ed3 DB |
675 | #endif |
676 | #ifdef CONFIG_ARCH_OMAP16XX | |
ea6dedd7 ID |
677 | case METHOD_GPIO_1610: |
678 | reg += OMAP1610_GPIO_IRQENABLE1; | |
99c47707 | 679 | mask = 0xffff; |
ea6dedd7 | 680 | break; |
e5c56ed3 DB |
681 | #endif |
682 | #ifdef CONFIG_ARCH_OMAP730 | |
ea6dedd7 ID |
683 | case METHOD_GPIO_730: |
684 | reg += OMAP730_GPIO_INT_MASK; | |
99c47707 ID |
685 | mask = 0xffffffff; |
686 | inv = 1; | |
ea6dedd7 | 687 | break; |
e5c56ed3 | 688 | #endif |
5492fb1a | 689 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
ea6dedd7 ID |
690 | case METHOD_GPIO_24XX: |
691 | reg += OMAP24XX_GPIO_IRQENABLE1; | |
99c47707 | 692 | mask = 0xffffffff; |
ea6dedd7 | 693 | break; |
e5c56ed3 | 694 | #endif |
ea6dedd7 | 695 | default: |
e5c56ed3 | 696 | WARN_ON(1); |
ea6dedd7 ID |
697 | return 0; |
698 | } | |
699 | ||
99c47707 ID |
700 | l = __raw_readl(reg); |
701 | if (inv) | |
702 | l = ~l; | |
703 | l &= mask; | |
704 | return l; | |
ea6dedd7 ID |
705 | } |
706 | ||
5e1c5ff4 TL |
707 | static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enable) |
708 | { | |
92105bb7 | 709 | void __iomem *reg = bank->base; |
5e1c5ff4 TL |
710 | u32 l; |
711 | ||
712 | switch (bank->method) { | |
e5c56ed3 | 713 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
714 | case METHOD_MPUIO: |
715 | reg += OMAP_MPUIO_GPIO_MASKIT; | |
716 | l = __raw_readl(reg); | |
717 | if (enable) | |
718 | l &= ~(gpio_mask); | |
719 | else | |
720 | l |= gpio_mask; | |
721 | break; | |
e5c56ed3 DB |
722 | #endif |
723 | #ifdef CONFIG_ARCH_OMAP15XX | |
5e1c5ff4 TL |
724 | case METHOD_GPIO_1510: |
725 | reg += OMAP1510_GPIO_INT_MASK; | |
726 | l = __raw_readl(reg); | |
727 | if (enable) | |
728 | l &= ~(gpio_mask); | |
729 | else | |
730 | l |= gpio_mask; | |
731 | break; | |
e5c56ed3 DB |
732 | #endif |
733 | #ifdef CONFIG_ARCH_OMAP16XX | |
5e1c5ff4 TL |
734 | case METHOD_GPIO_1610: |
735 | if (enable) | |
736 | reg += OMAP1610_GPIO_SET_IRQENABLE1; | |
737 | else | |
738 | reg += OMAP1610_GPIO_CLEAR_IRQENABLE1; | |
739 | l = gpio_mask; | |
740 | break; | |
e5c56ed3 DB |
741 | #endif |
742 | #ifdef CONFIG_ARCH_OMAP730 | |
5e1c5ff4 TL |
743 | case METHOD_GPIO_730: |
744 | reg += OMAP730_GPIO_INT_MASK; | |
745 | l = __raw_readl(reg); | |
746 | if (enable) | |
747 | l &= ~(gpio_mask); | |
748 | else | |
749 | l |= gpio_mask; | |
750 | break; | |
e5c56ed3 | 751 | #endif |
5492fb1a | 752 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
753 | case METHOD_GPIO_24XX: |
754 | if (enable) | |
755 | reg += OMAP24XX_GPIO_SETIRQENABLE1; | |
756 | else | |
757 | reg += OMAP24XX_GPIO_CLEARIRQENABLE1; | |
758 | l = gpio_mask; | |
759 | break; | |
e5c56ed3 | 760 | #endif |
5e1c5ff4 | 761 | default: |
e5c56ed3 | 762 | WARN_ON(1); |
5e1c5ff4 TL |
763 | return; |
764 | } | |
765 | __raw_writel(l, reg); | |
766 | } | |
767 | ||
768 | static inline void _set_gpio_irqenable(struct gpio_bank *bank, int gpio, int enable) | |
769 | { | |
770 | _enable_gpio_irqbank(bank, 1 << get_gpio_index(gpio), enable); | |
771 | } | |
772 | ||
92105bb7 TL |
773 | /* |
774 | * Note that ENAWAKEUP needs to be enabled in GPIO_SYSCONFIG register. | |
775 | * 1510 does not seem to have a wake-up register. If JTAG is connected | |
776 | * to the target, system will wake up always on GPIO events. While | |
777 | * system is running all registered GPIO interrupts need to have wake-up | |
778 | * enabled. When system is suspended, only selected GPIO interrupts need | |
779 | * to have wake-up enabled. | |
780 | */ | |
781 | static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable) | |
782 | { | |
783 | switch (bank->method) { | |
3ac4fa99 | 784 | #ifdef CONFIG_ARCH_OMAP16XX |
11a78b79 | 785 | case METHOD_MPUIO: |
92105bb7 | 786 | case METHOD_GPIO_1610: |
92105bb7 | 787 | spin_lock(&bank->lock); |
11a78b79 | 788 | if (enable) { |
92105bb7 | 789 | bank->suspend_wakeup |= (1 << gpio); |
11a78b79 DB |
790 | enable_irq_wake(bank->irq); |
791 | } else { | |
792 | disable_irq_wake(bank->irq); | |
92105bb7 | 793 | bank->suspend_wakeup &= ~(1 << gpio); |
11a78b79 | 794 | } |
92105bb7 TL |
795 | spin_unlock(&bank->lock); |
796 | return 0; | |
3ac4fa99 | 797 | #endif |
5492fb1a | 798 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 | 799 | case METHOD_GPIO_24XX: |
11a78b79 DB |
800 | if (bank->non_wakeup_gpios & (1 << gpio)) { |
801 | printk(KERN_ERR "Unable to modify wakeup on " | |
802 | "non-wakeup GPIO%d\n", | |
803 | (bank - gpio_bank) * 32 + gpio); | |
804 | return -EINVAL; | |
805 | } | |
3ac4fa99 JY |
806 | spin_lock(&bank->lock); |
807 | if (enable) { | |
3ac4fa99 | 808 | bank->suspend_wakeup |= (1 << gpio); |
11a78b79 DB |
809 | enable_irq_wake(bank->irq); |
810 | } else { | |
811 | disable_irq_wake(bank->irq); | |
3ac4fa99 | 812 | bank->suspend_wakeup &= ~(1 << gpio); |
11a78b79 | 813 | } |
3ac4fa99 JY |
814 | spin_unlock(&bank->lock); |
815 | return 0; | |
816 | #endif | |
92105bb7 TL |
817 | default: |
818 | printk(KERN_ERR "Can't enable GPIO wakeup for method %i\n", | |
819 | bank->method); | |
820 | return -EINVAL; | |
821 | } | |
822 | } | |
823 | ||
4196dd6b TL |
824 | static void _reset_gpio(struct gpio_bank *bank, int gpio) |
825 | { | |
826 | _set_gpio_direction(bank, get_gpio_index(gpio), 1); | |
827 | _set_gpio_irqenable(bank, gpio, 0); | |
828 | _clear_gpio_irqstatus(bank, gpio); | |
829 | _set_gpio_triggering(bank, get_gpio_index(gpio), IRQT_NOEDGE); | |
830 | } | |
831 | ||
92105bb7 TL |
832 | /* Use disable_irq_wake() and enable_irq_wake() functions from drivers */ |
833 | static int gpio_wake_enable(unsigned int irq, unsigned int enable) | |
834 | { | |
835 | unsigned int gpio = irq - IH_GPIO_BASE; | |
836 | struct gpio_bank *bank; | |
837 | int retval; | |
838 | ||
839 | if (check_gpio(gpio) < 0) | |
840 | return -ENODEV; | |
58781016 | 841 | bank = get_irq_chip_data(irq); |
92105bb7 | 842 | retval = _set_gpio_wakeup(bank, get_gpio_index(gpio), enable); |
92105bb7 TL |
843 | |
844 | return retval; | |
845 | } | |
846 | ||
5e1c5ff4 TL |
847 | int omap_request_gpio(int gpio) |
848 | { | |
849 | struct gpio_bank *bank; | |
850 | ||
851 | if (check_gpio(gpio) < 0) | |
852 | return -EINVAL; | |
853 | ||
854 | bank = get_gpio_bank(gpio); | |
855 | spin_lock(&bank->lock); | |
856 | if (unlikely(bank->reserved_map & (1 << get_gpio_index(gpio)))) { | |
857 | printk(KERN_ERR "omap-gpio: GPIO %d is already reserved!\n", gpio); | |
858 | dump_stack(); | |
859 | spin_unlock(&bank->lock); | |
860 | return -1; | |
861 | } | |
862 | bank->reserved_map |= (1 << get_gpio_index(gpio)); | |
92105bb7 | 863 | |
4196dd6b TL |
864 | /* Set trigger to none. You need to enable the desired trigger with |
865 | * request_irq() or set_irq_type(). | |
866 | */ | |
92105bb7 TL |
867 | _set_gpio_triggering(bank, get_gpio_index(gpio), IRQT_NOEDGE); |
868 | ||
1a8bfa1e | 869 | #ifdef CONFIG_ARCH_OMAP15XX |
5e1c5ff4 | 870 | if (bank->method == METHOD_GPIO_1510) { |
92105bb7 | 871 | void __iomem *reg; |
5e1c5ff4 | 872 | |
92105bb7 | 873 | /* Claim the pin for MPU */ |
5e1c5ff4 TL |
874 | reg = bank->base + OMAP1510_GPIO_PIN_CONTROL; |
875 | __raw_writel(__raw_readl(reg) | (1 << get_gpio_index(gpio)), reg); | |
876 | } | |
877 | #endif | |
878 | spin_unlock(&bank->lock); | |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | void omap_free_gpio(int gpio) | |
884 | { | |
885 | struct gpio_bank *bank; | |
886 | ||
887 | if (check_gpio(gpio) < 0) | |
888 | return; | |
889 | bank = get_gpio_bank(gpio); | |
890 | spin_lock(&bank->lock); | |
891 | if (unlikely(!(bank->reserved_map & (1 << get_gpio_index(gpio))))) { | |
892 | printk(KERN_ERR "omap-gpio: GPIO %d wasn't reserved!\n", gpio); | |
893 | dump_stack(); | |
894 | spin_unlock(&bank->lock); | |
895 | return; | |
896 | } | |
92105bb7 TL |
897 | #ifdef CONFIG_ARCH_OMAP16XX |
898 | if (bank->method == METHOD_GPIO_1610) { | |
899 | /* Disable wake-up during idle for dynamic tick */ | |
900 | void __iomem *reg = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; | |
901 | __raw_writel(1 << get_gpio_index(gpio), reg); | |
902 | } | |
903 | #endif | |
5492fb1a | 904 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
905 | if (bank->method == METHOD_GPIO_24XX) { |
906 | /* Disable wake-up during idle for dynamic tick */ | |
907 | void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA; | |
908 | __raw_writel(1 << get_gpio_index(gpio), reg); | |
909 | } | |
910 | #endif | |
5e1c5ff4 | 911 | bank->reserved_map &= ~(1 << get_gpio_index(gpio)); |
4196dd6b | 912 | _reset_gpio(bank, gpio); |
5e1c5ff4 TL |
913 | spin_unlock(&bank->lock); |
914 | } | |
915 | ||
916 | /* | |
917 | * We need to unmask the GPIO bank interrupt as soon as possible to | |
918 | * avoid missing GPIO interrupts for other lines in the bank. | |
919 | * Then we need to mask-read-clear-unmask the triggered GPIO lines | |
920 | * in the bank to avoid missing nested interrupts for a GPIO line. | |
921 | * If we wait to unmask individual GPIO lines in the bank after the | |
922 | * line's interrupt handler has been run, we may miss some nested | |
923 | * interrupts. | |
924 | */ | |
10dd5ce2 | 925 | static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) |
5e1c5ff4 | 926 | { |
92105bb7 | 927 | void __iomem *isr_reg = NULL; |
5e1c5ff4 TL |
928 | u32 isr; |
929 | unsigned int gpio_irq; | |
930 | struct gpio_bank *bank; | |
ea6dedd7 ID |
931 | u32 retrigger = 0; |
932 | int unmasked = 0; | |
5e1c5ff4 TL |
933 | |
934 | desc->chip->ack(irq); | |
935 | ||
418ca1f0 | 936 | bank = get_irq_data(irq); |
e5c56ed3 | 937 | #ifdef CONFIG_ARCH_OMAP1 |
5e1c5ff4 TL |
938 | if (bank->method == METHOD_MPUIO) |
939 | isr_reg = bank->base + OMAP_MPUIO_GPIO_INT; | |
e5c56ed3 | 940 | #endif |
1a8bfa1e | 941 | #ifdef CONFIG_ARCH_OMAP15XX |
5e1c5ff4 TL |
942 | if (bank->method == METHOD_GPIO_1510) |
943 | isr_reg = bank->base + OMAP1510_GPIO_INT_STATUS; | |
944 | #endif | |
945 | #if defined(CONFIG_ARCH_OMAP16XX) | |
946 | if (bank->method == METHOD_GPIO_1610) | |
947 | isr_reg = bank->base + OMAP1610_GPIO_IRQSTATUS1; | |
948 | #endif | |
949 | #ifdef CONFIG_ARCH_OMAP730 | |
950 | if (bank->method == METHOD_GPIO_730) | |
951 | isr_reg = bank->base + OMAP730_GPIO_INT_STATUS; | |
952 | #endif | |
5492fb1a | 953 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
954 | if (bank->method == METHOD_GPIO_24XX) |
955 | isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1; | |
956 | #endif | |
92105bb7 | 957 | while(1) { |
6e60e79a | 958 | u32 isr_saved, level_mask = 0; |
ea6dedd7 | 959 | u32 enabled; |
6e60e79a | 960 | |
ea6dedd7 ID |
961 | enabled = _get_gpio_irqbank_mask(bank); |
962 | isr_saved = isr = __raw_readl(isr_reg) & enabled; | |
6e60e79a TL |
963 | |
964 | if (cpu_is_omap15xx() && (bank->method == METHOD_MPUIO)) | |
965 | isr &= 0x0000ffff; | |
966 | ||
5492fb1a | 967 | if (cpu_class_is_omap2()) { |
6e60e79a TL |
968 | level_mask = |
969 | __raw_readl(bank->base + | |
970 | OMAP24XX_GPIO_LEVELDETECT0) | | |
971 | __raw_readl(bank->base + | |
972 | OMAP24XX_GPIO_LEVELDETECT1); | |
ea6dedd7 ID |
973 | level_mask &= enabled; |
974 | } | |
6e60e79a TL |
975 | |
976 | /* clear edge sensitive interrupts before handler(s) are | |
977 | called so that we don't miss any interrupt occurred while | |
978 | executing them */ | |
979 | _enable_gpio_irqbank(bank, isr_saved & ~level_mask, 0); | |
980 | _clear_gpio_irqbank(bank, isr_saved & ~level_mask); | |
981 | _enable_gpio_irqbank(bank, isr_saved & ~level_mask, 1); | |
982 | ||
983 | /* if there is only edge sensitive GPIO pin interrupts | |
984 | configured, we could unmask GPIO bank interrupt immediately */ | |
ea6dedd7 ID |
985 | if (!level_mask && !unmasked) { |
986 | unmasked = 1; | |
6e60e79a | 987 | desc->chip->unmask(irq); |
ea6dedd7 | 988 | } |
92105bb7 | 989 | |
ea6dedd7 ID |
990 | isr |= retrigger; |
991 | retrigger = 0; | |
92105bb7 TL |
992 | if (!isr) |
993 | break; | |
994 | ||
995 | gpio_irq = bank->virtual_irq_start; | |
996 | for (; isr != 0; isr >>= 1, gpio_irq++) { | |
10dd5ce2 | 997 | struct irq_desc *d; |
ea6dedd7 | 998 | int irq_mask; |
92105bb7 TL |
999 | if (!(isr & 1)) |
1000 | continue; | |
1001 | d = irq_desc + gpio_irq; | |
ea6dedd7 ID |
1002 | /* Don't run the handler if it's already running |
1003 | * or was disabled lazely. | |
1004 | */ | |
29454dde TG |
1005 | if (unlikely((d->depth || |
1006 | (d->status & IRQ_INPROGRESS)))) { | |
ea6dedd7 ID |
1007 | irq_mask = 1 << |
1008 | (gpio_irq - bank->virtual_irq_start); | |
1009 | /* The unmasking will be done by | |
1010 | * enable_irq in case it is disabled or | |
1011 | * after returning from the handler if | |
1012 | * it's already running. | |
1013 | */ | |
1014 | _enable_gpio_irqbank(bank, irq_mask, 0); | |
29454dde | 1015 | if (!d->depth) { |
ea6dedd7 ID |
1016 | /* Level triggered interrupts |
1017 | * won't ever be reentered | |
1018 | */ | |
1019 | BUG_ON(level_mask & irq_mask); | |
29454dde | 1020 | d->status |= IRQ_PENDING; |
ea6dedd7 ID |
1021 | } |
1022 | continue; | |
1023 | } | |
29454dde | 1024 | |
0cd61b68 | 1025 | desc_handle_irq(gpio_irq, d); |
29454dde TG |
1026 | |
1027 | if (unlikely((d->status & IRQ_PENDING) && !d->depth)) { | |
ea6dedd7 ID |
1028 | irq_mask = 1 << |
1029 | (gpio_irq - bank->virtual_irq_start); | |
29454dde | 1030 | d->status &= ~IRQ_PENDING; |
ea6dedd7 ID |
1031 | _enable_gpio_irqbank(bank, irq_mask, 1); |
1032 | retrigger |= irq_mask; | |
1033 | } | |
92105bb7 | 1034 | } |
6e60e79a | 1035 | |
5492fb1a | 1036 | if (cpu_class_is_omap2()) { |
6e60e79a TL |
1037 | /* clear level sensitive interrupts after handler(s) */ |
1038 | _enable_gpio_irqbank(bank, isr_saved & level_mask, 0); | |
1039 | _clear_gpio_irqbank(bank, isr_saved & level_mask); | |
1040 | _enable_gpio_irqbank(bank, isr_saved & level_mask, 1); | |
1041 | } | |
1042 | ||
1a8bfa1e | 1043 | } |
ea6dedd7 ID |
1044 | /* if bank has any level sensitive GPIO pin interrupt |
1045 | configured, we must unmask the bank interrupt only after | |
1046 | handler(s) are executed in order to avoid spurious bank | |
1047 | interrupt */ | |
1048 | if (!unmasked) | |
1049 | desc->chip->unmask(irq); | |
1050 | ||
5e1c5ff4 TL |
1051 | } |
1052 | ||
4196dd6b TL |
1053 | static void gpio_irq_shutdown(unsigned int irq) |
1054 | { | |
1055 | unsigned int gpio = irq - IH_GPIO_BASE; | |
58781016 | 1056 | struct gpio_bank *bank = get_irq_chip_data(irq); |
4196dd6b TL |
1057 | |
1058 | _reset_gpio(bank, gpio); | |
1059 | } | |
1060 | ||
5e1c5ff4 TL |
1061 | static void gpio_ack_irq(unsigned int irq) |
1062 | { | |
1063 | unsigned int gpio = irq - IH_GPIO_BASE; | |
58781016 | 1064 | struct gpio_bank *bank = get_irq_chip_data(irq); |
5e1c5ff4 TL |
1065 | |
1066 | _clear_gpio_irqstatus(bank, gpio); | |
1067 | } | |
1068 | ||
1069 | static void gpio_mask_irq(unsigned int irq) | |
1070 | { | |
1071 | unsigned int gpio = irq - IH_GPIO_BASE; | |
58781016 | 1072 | struct gpio_bank *bank = get_irq_chip_data(irq); |
5e1c5ff4 TL |
1073 | |
1074 | _set_gpio_irqenable(bank, gpio, 0); | |
1075 | } | |
1076 | ||
1077 | static void gpio_unmask_irq(unsigned int irq) | |
1078 | { | |
1079 | unsigned int gpio = irq - IH_GPIO_BASE; | |
92105bb7 | 1080 | unsigned int gpio_idx = get_gpio_index(gpio); |
58781016 | 1081 | struct gpio_bank *bank = get_irq_chip_data(irq); |
5e1c5ff4 | 1082 | |
92105bb7 | 1083 | _set_gpio_irqenable(bank, gpio_idx, 1); |
5e1c5ff4 TL |
1084 | } |
1085 | ||
e5c56ed3 DB |
1086 | static struct irq_chip gpio_irq_chip = { |
1087 | .name = "GPIO", | |
1088 | .shutdown = gpio_irq_shutdown, | |
1089 | .ack = gpio_ack_irq, | |
1090 | .mask = gpio_mask_irq, | |
1091 | .unmask = gpio_unmask_irq, | |
1092 | .set_type = gpio_irq_type, | |
1093 | .set_wake = gpio_wake_enable, | |
1094 | }; | |
1095 | ||
1096 | /*---------------------------------------------------------------------*/ | |
1097 | ||
1098 | #ifdef CONFIG_ARCH_OMAP1 | |
1099 | ||
1100 | /* MPUIO uses the always-on 32k clock */ | |
1101 | ||
5e1c5ff4 TL |
1102 | static void mpuio_ack_irq(unsigned int irq) |
1103 | { | |
1104 | /* The ISR is reset automatically, so do nothing here. */ | |
1105 | } | |
1106 | ||
1107 | static void mpuio_mask_irq(unsigned int irq) | |
1108 | { | |
1109 | unsigned int gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE); | |
58781016 | 1110 | struct gpio_bank *bank = get_irq_chip_data(irq); |
5e1c5ff4 TL |
1111 | |
1112 | _set_gpio_irqenable(bank, gpio, 0); | |
1113 | } | |
1114 | ||
1115 | static void mpuio_unmask_irq(unsigned int irq) | |
1116 | { | |
1117 | unsigned int gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE); | |
58781016 | 1118 | struct gpio_bank *bank = get_irq_chip_data(irq); |
5e1c5ff4 TL |
1119 | |
1120 | _set_gpio_irqenable(bank, gpio, 1); | |
1121 | } | |
1122 | ||
e5c56ed3 DB |
1123 | static struct irq_chip mpuio_irq_chip = { |
1124 | .name = "MPUIO", | |
1125 | .ack = mpuio_ack_irq, | |
1126 | .mask = mpuio_mask_irq, | |
1127 | .unmask = mpuio_unmask_irq, | |
92105bb7 | 1128 | .set_type = gpio_irq_type, |
11a78b79 DB |
1129 | #ifdef CONFIG_ARCH_OMAP16XX |
1130 | /* REVISIT: assuming only 16xx supports MPUIO wake events */ | |
1131 | .set_wake = gpio_wake_enable, | |
1132 | #endif | |
5e1c5ff4 TL |
1133 | }; |
1134 | ||
e5c56ed3 DB |
1135 | |
1136 | #define bank_is_mpuio(bank) ((bank)->method == METHOD_MPUIO) | |
1137 | ||
11a78b79 DB |
1138 | |
1139 | #ifdef CONFIG_ARCH_OMAP16XX | |
1140 | ||
1141 | #include <linux/platform_device.h> | |
1142 | ||
1143 | static int omap_mpuio_suspend_late(struct platform_device *pdev, pm_message_t mesg) | |
1144 | { | |
1145 | struct gpio_bank *bank = platform_get_drvdata(pdev); | |
1146 | void __iomem *mask_reg = bank->base + OMAP_MPUIO_GPIO_MASKIT; | |
1147 | ||
1148 | spin_lock(&bank->lock); | |
1149 | bank->saved_wakeup = __raw_readl(mask_reg); | |
1150 | __raw_writel(0xffff & ~bank->suspend_wakeup, mask_reg); | |
1151 | spin_unlock(&bank->lock); | |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | static int omap_mpuio_resume_early(struct platform_device *pdev) | |
1157 | { | |
1158 | struct gpio_bank *bank = platform_get_drvdata(pdev); | |
1159 | void __iomem *mask_reg = bank->base + OMAP_MPUIO_GPIO_MASKIT; | |
1160 | ||
1161 | spin_lock(&bank->lock); | |
1162 | __raw_writel(bank->saved_wakeup, mask_reg); | |
1163 | spin_unlock(&bank->lock); | |
1164 | ||
1165 | return 0; | |
1166 | } | |
1167 | ||
1168 | /* use platform_driver for this, now that there's no longer any | |
1169 | * point to sys_device (other than not disturbing old code). | |
1170 | */ | |
1171 | static struct platform_driver omap_mpuio_driver = { | |
1172 | .suspend_late = omap_mpuio_suspend_late, | |
1173 | .resume_early = omap_mpuio_resume_early, | |
1174 | .driver = { | |
1175 | .name = "mpuio", | |
1176 | }, | |
1177 | }; | |
1178 | ||
1179 | static struct platform_device omap_mpuio_device = { | |
1180 | .name = "mpuio", | |
1181 | .id = -1, | |
1182 | .dev = { | |
1183 | .driver = &omap_mpuio_driver.driver, | |
1184 | } | |
1185 | /* could list the /proc/iomem resources */ | |
1186 | }; | |
1187 | ||
1188 | static inline void mpuio_init(void) | |
1189 | { | |
fcf126d8 DB |
1190 | platform_set_drvdata(&omap_mpuio_device, &gpio_bank_1610[0]); |
1191 | ||
11a78b79 DB |
1192 | if (platform_driver_register(&omap_mpuio_driver) == 0) |
1193 | (void) platform_device_register(&omap_mpuio_device); | |
1194 | } | |
1195 | ||
1196 | #else | |
1197 | static inline void mpuio_init(void) {} | |
1198 | #endif /* 16xx */ | |
1199 | ||
e5c56ed3 DB |
1200 | #else |
1201 | ||
1202 | extern struct irq_chip mpuio_irq_chip; | |
1203 | ||
1204 | #define bank_is_mpuio(bank) 0 | |
11a78b79 | 1205 | static inline void mpuio_init(void) {} |
e5c56ed3 DB |
1206 | |
1207 | #endif | |
1208 | ||
1209 | /*---------------------------------------------------------------------*/ | |
5e1c5ff4 | 1210 | |
1a8bfa1e | 1211 | static int initialized; |
5492fb1a | 1212 | #if !defined(CONFIG_ARCH_OMAP3) |
1a8bfa1e | 1213 | static struct clk * gpio_ick; |
5492fb1a SMK |
1214 | #endif |
1215 | ||
1216 | #if defined(CONFIG_ARCH_OMAP2) | |
1a8bfa1e | 1217 | static struct clk * gpio_fck; |
5492fb1a | 1218 | #endif |
5e1c5ff4 | 1219 | |
5492fb1a | 1220 | #if defined(CONFIG_ARCH_OMAP2430) |
56a25641 SMK |
1221 | static struct clk * gpio5_ick; |
1222 | static struct clk * gpio5_fck; | |
1223 | #endif | |
1224 | ||
5492fb1a SMK |
1225 | #if defined(CONFIG_ARCH_OMAP3) |
1226 | static struct clk *gpio_fclks[OMAP34XX_NR_GPIOS]; | |
1227 | static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS]; | |
1228 | #endif | |
1229 | ||
5e1c5ff4 TL |
1230 | static int __init _omap_gpio_init(void) |
1231 | { | |
1232 | int i; | |
1233 | struct gpio_bank *bank; | |
5492fb1a SMK |
1234 | #if defined(CONFIG_ARCH_OMAP3) |
1235 | char clk_name[11]; | |
1236 | #endif | |
5e1c5ff4 TL |
1237 | |
1238 | initialized = 1; | |
1239 | ||
5492fb1a | 1240 | #if defined(CONFIG_ARCH_OMAP1) |
6e60e79a | 1241 | if (cpu_is_omap15xx()) { |
1a8bfa1e TL |
1242 | gpio_ick = clk_get(NULL, "arm_gpio_ck"); |
1243 | if (IS_ERR(gpio_ick)) | |
92105bb7 TL |
1244 | printk("Could not get arm_gpio_ck\n"); |
1245 | else | |
30ff720b | 1246 | clk_enable(gpio_ick); |
1a8bfa1e | 1247 | } |
5492fb1a SMK |
1248 | #endif |
1249 | #if defined(CONFIG_ARCH_OMAP2) | |
1250 | if (cpu_class_is_omap2()) { | |
1a8bfa1e TL |
1251 | gpio_ick = clk_get(NULL, "gpios_ick"); |
1252 | if (IS_ERR(gpio_ick)) | |
1253 | printk("Could not get gpios_ick\n"); | |
1254 | else | |
30ff720b | 1255 | clk_enable(gpio_ick); |
1a8bfa1e | 1256 | gpio_fck = clk_get(NULL, "gpios_fck"); |
1630b52d | 1257 | if (IS_ERR(gpio_fck)) |
1a8bfa1e TL |
1258 | printk("Could not get gpios_fck\n"); |
1259 | else | |
30ff720b | 1260 | clk_enable(gpio_fck); |
56a25641 SMK |
1261 | |
1262 | /* | |
5492fb1a | 1263 | * On 2430 & 3430 GPIO 5 uses CORE L4 ICLK |
56a25641 | 1264 | */ |
5492fb1a | 1265 | #if defined(CONFIG_ARCH_OMAP2430) |
56a25641 SMK |
1266 | if (cpu_is_omap2430()) { |
1267 | gpio5_ick = clk_get(NULL, "gpio5_ick"); | |
1268 | if (IS_ERR(gpio5_ick)) | |
1269 | printk("Could not get gpio5_ick\n"); | |
1270 | else | |
1271 | clk_enable(gpio5_ick); | |
1272 | gpio5_fck = clk_get(NULL, "gpio5_fck"); | |
1273 | if (IS_ERR(gpio5_fck)) | |
1274 | printk("Could not get gpio5_fck\n"); | |
1275 | else | |
1276 | clk_enable(gpio5_fck); | |
1277 | } | |
1278 | #endif | |
5492fb1a SMK |
1279 | } |
1280 | #endif | |
1281 | ||
1282 | #if defined(CONFIG_ARCH_OMAP3) | |
1283 | if (cpu_is_omap34xx()) { | |
1284 | for (i = 0; i < OMAP34XX_NR_GPIOS; i++) { | |
1285 | sprintf(clk_name, "gpio%d_ick", i + 1); | |
1286 | gpio_iclks[i] = clk_get(NULL, clk_name); | |
1287 | if (IS_ERR(gpio_iclks[i])) | |
1288 | printk(KERN_ERR "Could not get %s\n", clk_name); | |
1289 | else | |
1290 | clk_enable(gpio_iclks[i]); | |
1291 | sprintf(clk_name, "gpio%d_fck", i + 1); | |
1292 | gpio_fclks[i] = clk_get(NULL, clk_name); | |
1293 | if (IS_ERR(gpio_fclks[i])) | |
1294 | printk(KERN_ERR "Could not get %s\n", clk_name); | |
1295 | else | |
1296 | clk_enable(gpio_fclks[i]); | |
1297 | } | |
1298 | } | |
1299 | #endif | |
1300 | ||
92105bb7 | 1301 | |
1a8bfa1e | 1302 | #ifdef CONFIG_ARCH_OMAP15XX |
6e60e79a | 1303 | if (cpu_is_omap15xx()) { |
5e1c5ff4 TL |
1304 | printk(KERN_INFO "OMAP1510 GPIO hardware\n"); |
1305 | gpio_bank_count = 2; | |
1306 | gpio_bank = gpio_bank_1510; | |
1307 | } | |
1308 | #endif | |
1309 | #if defined(CONFIG_ARCH_OMAP16XX) | |
1310 | if (cpu_is_omap16xx()) { | |
92105bb7 | 1311 | u32 rev; |
5e1c5ff4 TL |
1312 | |
1313 | gpio_bank_count = 5; | |
1314 | gpio_bank = gpio_bank_1610; | |
1315 | rev = omap_readw(gpio_bank[1].base + OMAP1610_GPIO_REVISION); | |
1316 | printk(KERN_INFO "OMAP GPIO hardware version %d.%d\n", | |
1317 | (rev >> 4) & 0x0f, rev & 0x0f); | |
1318 | } | |
1319 | #endif | |
1320 | #ifdef CONFIG_ARCH_OMAP730 | |
1321 | if (cpu_is_omap730()) { | |
1322 | printk(KERN_INFO "OMAP730 GPIO hardware\n"); | |
1323 | gpio_bank_count = 7; | |
1324 | gpio_bank = gpio_bank_730; | |
1325 | } | |
92105bb7 | 1326 | #endif |
56a25641 | 1327 | |
92105bb7 | 1328 | #ifdef CONFIG_ARCH_OMAP24XX |
56a25641 | 1329 | if (cpu_is_omap242x()) { |
92105bb7 TL |
1330 | int rev; |
1331 | ||
1332 | gpio_bank_count = 4; | |
56a25641 SMK |
1333 | gpio_bank = gpio_bank_242x; |
1334 | rev = omap_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION); | |
1335 | printk(KERN_INFO "OMAP242x GPIO hardware version %d.%d\n", | |
1336 | (rev >> 4) & 0x0f, rev & 0x0f); | |
1337 | } | |
1338 | if (cpu_is_omap243x()) { | |
1339 | int rev; | |
1340 | ||
1341 | gpio_bank_count = 5; | |
1342 | gpio_bank = gpio_bank_243x; | |
92105bb7 | 1343 | rev = omap_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION); |
56a25641 | 1344 | printk(KERN_INFO "OMAP243x GPIO hardware version %d.%d\n", |
92105bb7 TL |
1345 | (rev >> 4) & 0x0f, rev & 0x0f); |
1346 | } | |
5492fb1a SMK |
1347 | #endif |
1348 | #ifdef CONFIG_ARCH_OMAP34XX | |
1349 | if (cpu_is_omap34xx()) { | |
1350 | int rev; | |
1351 | ||
1352 | gpio_bank_count = OMAP34XX_NR_GPIOS; | |
1353 | gpio_bank = gpio_bank_34xx; | |
1354 | rev = omap_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION); | |
1355 | printk(KERN_INFO "OMAP34xx GPIO hardware version %d.%d\n", | |
1356 | (rev >> 4) & 0x0f, rev & 0x0f); | |
1357 | } | |
5e1c5ff4 TL |
1358 | #endif |
1359 | for (i = 0; i < gpio_bank_count; i++) { | |
1360 | int j, gpio_count = 16; | |
1361 | ||
1362 | bank = &gpio_bank[i]; | |
1363 | bank->reserved_map = 0; | |
1364 | bank->base = IO_ADDRESS(bank->base); | |
1365 | spin_lock_init(&bank->lock); | |
e5c56ed3 | 1366 | if (bank_is_mpuio(bank)) |
5e1c5ff4 | 1367 | omap_writew(0xFFFF, OMAP_MPUIO_BASE + OMAP_MPUIO_GPIO_MASKIT); |
d11ac979 | 1368 | if (cpu_is_omap15xx() && bank->method == METHOD_GPIO_1510) { |
5e1c5ff4 TL |
1369 | __raw_writew(0xffff, bank->base + OMAP1510_GPIO_INT_MASK); |
1370 | __raw_writew(0x0000, bank->base + OMAP1510_GPIO_INT_STATUS); | |
1371 | } | |
d11ac979 | 1372 | if (cpu_is_omap16xx() && bank->method == METHOD_GPIO_1610) { |
5e1c5ff4 TL |
1373 | __raw_writew(0x0000, bank->base + OMAP1610_GPIO_IRQENABLE1); |
1374 | __raw_writew(0xffff, bank->base + OMAP1610_GPIO_IRQSTATUS1); | |
92105bb7 | 1375 | __raw_writew(0x0014, bank->base + OMAP1610_GPIO_SYSCONFIG); |
5e1c5ff4 | 1376 | } |
d11ac979 | 1377 | if (cpu_is_omap730() && bank->method == METHOD_GPIO_730) { |
5e1c5ff4 TL |
1378 | __raw_writel(0xffffffff, bank->base + OMAP730_GPIO_INT_MASK); |
1379 | __raw_writel(0x00000000, bank->base + OMAP730_GPIO_INT_STATUS); | |
1380 | ||
1381 | gpio_count = 32; /* 730 has 32-bit GPIOs */ | |
1382 | } | |
d11ac979 | 1383 | |
5492fb1a | 1384 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 | 1385 | if (bank->method == METHOD_GPIO_24XX) { |
3ac4fa99 JY |
1386 | static const u32 non_wakeup_gpios[] = { |
1387 | 0xe203ffc0, 0x08700040 | |
1388 | }; | |
1389 | ||
92105bb7 TL |
1390 | __raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1); |
1391 | __raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1); | |
14f1c3bf JY |
1392 | __raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG); |
1393 | ||
1394 | /* Initialize interface clock ungated, module enabled */ | |
1395 | __raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL); | |
3ac4fa99 JY |
1396 | if (i < ARRAY_SIZE(non_wakeup_gpios)) |
1397 | bank->non_wakeup_gpios = non_wakeup_gpios[i]; | |
92105bb7 TL |
1398 | gpio_count = 32; |
1399 | } | |
5e1c5ff4 TL |
1400 | #endif |
1401 | for (j = bank->virtual_irq_start; | |
1402 | j < bank->virtual_irq_start + gpio_count; j++) { | |
58781016 | 1403 | set_irq_chip_data(j, bank); |
e5c56ed3 | 1404 | if (bank_is_mpuio(bank)) |
5e1c5ff4 TL |
1405 | set_irq_chip(j, &mpuio_irq_chip); |
1406 | else | |
1407 | set_irq_chip(j, &gpio_irq_chip); | |
10dd5ce2 | 1408 | set_irq_handler(j, handle_simple_irq); |
5e1c5ff4 TL |
1409 | set_irq_flags(j, IRQF_VALID); |
1410 | } | |
1411 | set_irq_chained_handler(bank->irq, gpio_irq_handler); | |
1412 | set_irq_data(bank->irq, bank); | |
1413 | } | |
1414 | ||
1415 | /* Enable system clock for GPIO module. | |
1416 | * The CAM_CLK_CTRL *is* really the right place. */ | |
92105bb7 | 1417 | if (cpu_is_omap16xx()) |
5e1c5ff4 TL |
1418 | omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, ULPD_CAM_CLK_CTRL); |
1419 | ||
14f1c3bf JY |
1420 | /* Enable autoidle for the OCP interface */ |
1421 | if (cpu_is_omap24xx()) | |
1422 | omap_writel(1 << 0, 0x48019010); | |
5492fb1a SMK |
1423 | if (cpu_is_omap34xx()) |
1424 | omap_writel(1 << 0, 0x48306814); | |
d11ac979 | 1425 | |
5e1c5ff4 TL |
1426 | return 0; |
1427 | } | |
1428 | ||
5492fb1a | 1429 | #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
1430 | static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg) |
1431 | { | |
1432 | int i; | |
1433 | ||
5492fb1a | 1434 | if (!cpu_class_is_omap2() && !cpu_is_omap16xx()) |
92105bb7 TL |
1435 | return 0; |
1436 | ||
1437 | for (i = 0; i < gpio_bank_count; i++) { | |
1438 | struct gpio_bank *bank = &gpio_bank[i]; | |
1439 | void __iomem *wake_status; | |
1440 | void __iomem *wake_clear; | |
1441 | void __iomem *wake_set; | |
1442 | ||
1443 | switch (bank->method) { | |
e5c56ed3 | 1444 | #ifdef CONFIG_ARCH_OMAP16XX |
92105bb7 TL |
1445 | case METHOD_GPIO_1610: |
1446 | wake_status = bank->base + OMAP1610_GPIO_WAKEUPENABLE; | |
1447 | wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; | |
1448 | wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; | |
1449 | break; | |
e5c56ed3 | 1450 | #endif |
5492fb1a | 1451 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 TL |
1452 | case METHOD_GPIO_24XX: |
1453 | wake_status = bank->base + OMAP24XX_GPIO_SETWKUENA; | |
1454 | wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA; | |
1455 | wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA; | |
1456 | break; | |
e5c56ed3 | 1457 | #endif |
92105bb7 TL |
1458 | default: |
1459 | continue; | |
1460 | } | |
1461 | ||
1462 | spin_lock(&bank->lock); | |
1463 | bank->saved_wakeup = __raw_readl(wake_status); | |
1464 | __raw_writel(0xffffffff, wake_clear); | |
1465 | __raw_writel(bank->suspend_wakeup, wake_set); | |
1466 | spin_unlock(&bank->lock); | |
1467 | } | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | static int omap_gpio_resume(struct sys_device *dev) | |
1473 | { | |
1474 | int i; | |
1475 | ||
1476 | if (!cpu_is_omap24xx() && !cpu_is_omap16xx()) | |
1477 | return 0; | |
1478 | ||
1479 | for (i = 0; i < gpio_bank_count; i++) { | |
1480 | struct gpio_bank *bank = &gpio_bank[i]; | |
1481 | void __iomem *wake_clear; | |
1482 | void __iomem *wake_set; | |
1483 | ||
1484 | switch (bank->method) { | |
e5c56ed3 | 1485 | #ifdef CONFIG_ARCH_OMAP16XX |
92105bb7 TL |
1486 | case METHOD_GPIO_1610: |
1487 | wake_clear = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA; | |
1488 | wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA; | |
1489 | break; | |
e5c56ed3 | 1490 | #endif |
5492fb1a | 1491 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
92105bb7 | 1492 | case METHOD_GPIO_24XX: |
0d9356cb TL |
1493 | wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA; |
1494 | wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA; | |
92105bb7 | 1495 | break; |
e5c56ed3 | 1496 | #endif |
92105bb7 TL |
1497 | default: |
1498 | continue; | |
1499 | } | |
1500 | ||
1501 | spin_lock(&bank->lock); | |
1502 | __raw_writel(0xffffffff, wake_clear); | |
1503 | __raw_writel(bank->saved_wakeup, wake_set); | |
1504 | spin_unlock(&bank->lock); | |
1505 | } | |
1506 | ||
1507 | return 0; | |
1508 | } | |
1509 | ||
1510 | static struct sysdev_class omap_gpio_sysclass = { | |
af5ca3f4 | 1511 | .name = "gpio", |
92105bb7 TL |
1512 | .suspend = omap_gpio_suspend, |
1513 | .resume = omap_gpio_resume, | |
1514 | }; | |
1515 | ||
1516 | static struct sys_device omap_gpio_device = { | |
1517 | .id = 0, | |
1518 | .cls = &omap_gpio_sysclass, | |
1519 | }; | |
3ac4fa99 JY |
1520 | |
1521 | #endif | |
1522 | ||
5492fb1a | 1523 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 JY |
1524 | |
1525 | static int workaround_enabled; | |
1526 | ||
1527 | void omap2_gpio_prepare_for_retention(void) | |
1528 | { | |
1529 | int i, c = 0; | |
1530 | ||
1531 | /* Remove triggering for all non-wakeup GPIOs. Otherwise spurious | |
1532 | * IRQs will be generated. See OMAP2420 Errata item 1.101. */ | |
1533 | for (i = 0; i < gpio_bank_count; i++) { | |
1534 | struct gpio_bank *bank = &gpio_bank[i]; | |
1535 | u32 l1, l2; | |
1536 | ||
1537 | if (!(bank->enabled_non_wakeup_gpios)) | |
1538 | continue; | |
5492fb1a | 1539 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 JY |
1540 | bank->saved_datain = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN); |
1541 | l1 = __raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT); | |
1542 | l2 = __raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT); | |
5492fb1a | 1543 | #endif |
3ac4fa99 JY |
1544 | bank->saved_fallingdetect = l1; |
1545 | bank->saved_risingdetect = l2; | |
1546 | l1 &= ~bank->enabled_non_wakeup_gpios; | |
1547 | l2 &= ~bank->enabled_non_wakeup_gpios; | |
5492fb1a | 1548 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 JY |
1549 | __raw_writel(l1, bank->base + OMAP24XX_GPIO_FALLINGDETECT); |
1550 | __raw_writel(l2, bank->base + OMAP24XX_GPIO_RISINGDETECT); | |
5492fb1a | 1551 | #endif |
3ac4fa99 JY |
1552 | c++; |
1553 | } | |
1554 | if (!c) { | |
1555 | workaround_enabled = 0; | |
1556 | return; | |
1557 | } | |
1558 | workaround_enabled = 1; | |
1559 | } | |
1560 | ||
1561 | void omap2_gpio_resume_after_retention(void) | |
1562 | { | |
1563 | int i; | |
1564 | ||
1565 | if (!workaround_enabled) | |
1566 | return; | |
1567 | for (i = 0; i < gpio_bank_count; i++) { | |
1568 | struct gpio_bank *bank = &gpio_bank[i]; | |
1569 | u32 l; | |
1570 | ||
1571 | if (!(bank->enabled_non_wakeup_gpios)) | |
1572 | continue; | |
5492fb1a | 1573 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 JY |
1574 | __raw_writel(bank->saved_fallingdetect, |
1575 | bank->base + OMAP24XX_GPIO_FALLINGDETECT); | |
1576 | __raw_writel(bank->saved_risingdetect, | |
1577 | bank->base + OMAP24XX_GPIO_RISINGDETECT); | |
5492fb1a | 1578 | #endif |
3ac4fa99 JY |
1579 | /* Check if any of the non-wakeup interrupt GPIOs have changed |
1580 | * state. If so, generate an IRQ by software. This is | |
1581 | * horribly racy, but it's the best we can do to work around | |
1582 | * this silicon bug. */ | |
5492fb1a | 1583 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 | 1584 | l = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN); |
5492fb1a | 1585 | #endif |
3ac4fa99 JY |
1586 | l ^= bank->saved_datain; |
1587 | l &= bank->non_wakeup_gpios; | |
1588 | if (l) { | |
1589 | u32 old0, old1; | |
5492fb1a | 1590 | #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
3ac4fa99 JY |
1591 | old0 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0); |
1592 | old1 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1); | |
1593 | __raw_writel(old0 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT0); | |
1594 | __raw_writel(old1 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT1); | |
1595 | __raw_writel(old0, bank->base + OMAP24XX_GPIO_LEVELDETECT0); | |
1596 | __raw_writel(old1, bank->base + OMAP24XX_GPIO_LEVELDETECT1); | |
5492fb1a | 1597 | #endif |
3ac4fa99 JY |
1598 | } |
1599 | } | |
1600 | ||
1601 | } | |
1602 | ||
92105bb7 TL |
1603 | #endif |
1604 | ||
5e1c5ff4 TL |
1605 | /* |
1606 | * This may get called early from board specific init | |
1a8bfa1e | 1607 | * for boards that have interrupts routed via FPGA. |
5e1c5ff4 | 1608 | */ |
277d58ef | 1609 | int __init omap_gpio_init(void) |
5e1c5ff4 TL |
1610 | { |
1611 | if (!initialized) | |
1612 | return _omap_gpio_init(); | |
1613 | else | |
1614 | return 0; | |
1615 | } | |
1616 | ||
92105bb7 TL |
1617 | static int __init omap_gpio_sysinit(void) |
1618 | { | |
1619 | int ret = 0; | |
1620 | ||
1621 | if (!initialized) | |
1622 | ret = _omap_gpio_init(); | |
1623 | ||
11a78b79 DB |
1624 | mpuio_init(); |
1625 | ||
5492fb1a SMK |
1626 | #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) |
1627 | if (cpu_is_omap16xx() || cpu_class_is_omap2()) { | |
92105bb7 TL |
1628 | if (ret == 0) { |
1629 | ret = sysdev_class_register(&omap_gpio_sysclass); | |
1630 | if (ret == 0) | |
1631 | ret = sysdev_register(&omap_gpio_device); | |
1632 | } | |
1633 | } | |
1634 | #endif | |
1635 | ||
1636 | return ret; | |
1637 | } | |
1638 | ||
5e1c5ff4 TL |
1639 | EXPORT_SYMBOL(omap_request_gpio); |
1640 | EXPORT_SYMBOL(omap_free_gpio); | |
1641 | EXPORT_SYMBOL(omap_set_gpio_direction); | |
1642 | EXPORT_SYMBOL(omap_set_gpio_dataout); | |
1643 | EXPORT_SYMBOL(omap_get_gpio_datain); | |
5e1c5ff4 | 1644 | |
92105bb7 | 1645 | arch_initcall(omap_gpio_sysinit); |
b9772a22 DB |
1646 | |
1647 | ||
1648 | #ifdef CONFIG_DEBUG_FS | |
1649 | ||
1650 | #include <linux/debugfs.h> | |
1651 | #include <linux/seq_file.h> | |
1652 | ||
1653 | static int gpio_is_input(struct gpio_bank *bank, int mask) | |
1654 | { | |
1655 | void __iomem *reg = bank->base; | |
1656 | ||
1657 | switch (bank->method) { | |
1658 | case METHOD_MPUIO: | |
1659 | reg += OMAP_MPUIO_IO_CNTL; | |
1660 | break; | |
1661 | case METHOD_GPIO_1510: | |
1662 | reg += OMAP1510_GPIO_DIR_CONTROL; | |
1663 | break; | |
1664 | case METHOD_GPIO_1610: | |
1665 | reg += OMAP1610_GPIO_DIRECTION; | |
1666 | break; | |
1667 | case METHOD_GPIO_730: | |
1668 | reg += OMAP730_GPIO_DIR_CONTROL; | |
1669 | break; | |
1670 | case METHOD_GPIO_24XX: | |
1671 | reg += OMAP24XX_GPIO_OE; | |
1672 | break; | |
1673 | } | |
1674 | return __raw_readl(reg) & mask; | |
1675 | } | |
1676 | ||
1677 | ||
1678 | static int dbg_gpio_show(struct seq_file *s, void *unused) | |
1679 | { | |
1680 | unsigned i, j, gpio; | |
1681 | ||
1682 | for (i = 0, gpio = 0; i < gpio_bank_count; i++) { | |
1683 | struct gpio_bank *bank = gpio_bank + i; | |
1684 | unsigned bankwidth = 16; | |
1685 | u32 mask = 1; | |
1686 | ||
e5c56ed3 | 1687 | if (bank_is_mpuio(bank)) |
b9772a22 | 1688 | gpio = OMAP_MPUIO(0); |
5492fb1a | 1689 | else if (cpu_class_is_omap2() || cpu_is_omap730()) |
b9772a22 DB |
1690 | bankwidth = 32; |
1691 | ||
1692 | for (j = 0; j < bankwidth; j++, gpio++, mask <<= 1) { | |
1693 | unsigned irq, value, is_in, irqstat; | |
1694 | ||
1695 | if (!(bank->reserved_map & mask)) | |
1696 | continue; | |
1697 | ||
1698 | irq = bank->virtual_irq_start + j; | |
1699 | value = omap_get_gpio_datain(gpio); | |
1700 | is_in = gpio_is_input(bank, mask); | |
1701 | ||
e5c56ed3 | 1702 | if (bank_is_mpuio(bank)) |
b9772a22 DB |
1703 | seq_printf(s, "MPUIO %2d: ", j); |
1704 | else | |
1705 | seq_printf(s, "GPIO %3d: ", gpio); | |
1706 | seq_printf(s, "%s %s", | |
1707 | is_in ? "in " : "out", | |
1708 | value ? "hi" : "lo"); | |
1709 | ||
1710 | irqstat = irq_desc[irq].status; | |
1711 | if (is_in && ((bank->suspend_wakeup & mask) | |
1712 | || irqstat & IRQ_TYPE_SENSE_MASK)) { | |
1713 | char *trigger = NULL; | |
1714 | ||
1715 | switch (irqstat & IRQ_TYPE_SENSE_MASK) { | |
1716 | case IRQ_TYPE_EDGE_FALLING: | |
1717 | trigger = "falling"; | |
1718 | break; | |
1719 | case IRQ_TYPE_EDGE_RISING: | |
1720 | trigger = "rising"; | |
1721 | break; | |
1722 | case IRQ_TYPE_EDGE_BOTH: | |
1723 | trigger = "bothedge"; | |
1724 | break; | |
1725 | case IRQ_TYPE_LEVEL_LOW: | |
1726 | trigger = "low"; | |
1727 | break; | |
1728 | case IRQ_TYPE_LEVEL_HIGH: | |
1729 | trigger = "high"; | |
1730 | break; | |
1731 | case IRQ_TYPE_NONE: | |
1732 | trigger = "(unspecified)"; | |
1733 | break; | |
1734 | } | |
1735 | seq_printf(s, ", irq-%d %s%s", | |
1736 | irq, trigger, | |
1737 | (bank->suspend_wakeup & mask) | |
1738 | ? " wakeup" : ""); | |
1739 | } | |
1740 | seq_printf(s, "\n"); | |
1741 | } | |
1742 | ||
e5c56ed3 | 1743 | if (bank_is_mpuio(bank)) { |
b9772a22 DB |
1744 | seq_printf(s, "\n"); |
1745 | gpio = 0; | |
1746 | } | |
1747 | } | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | static int dbg_gpio_open(struct inode *inode, struct file *file) | |
1752 | { | |
e5c56ed3 | 1753 | return single_open(file, dbg_gpio_show, &inode->i_private); |
b9772a22 DB |
1754 | } |
1755 | ||
1756 | static const struct file_operations debug_fops = { | |
1757 | .open = dbg_gpio_open, | |
1758 | .read = seq_read, | |
1759 | .llseek = seq_lseek, | |
1760 | .release = single_release, | |
1761 | }; | |
1762 | ||
1763 | static int __init omap_gpio_debuginit(void) | |
1764 | { | |
e5c56ed3 DB |
1765 | (void) debugfs_create_file("omap_gpio", S_IRUGO, |
1766 | NULL, NULL, &debug_fops); | |
b9772a22 DB |
1767 | return 0; |
1768 | } | |
1769 | late_initcall(omap_gpio_debuginit); | |
1770 | #endif |