eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-pxa/mfp-pxa2xx.c |
| 3 | * |
| 4 | * PXA2xx pin mux configuration support |
| 5 | * |
| 6 | * The GPIOs on PXA2xx can be configured as one of many alternate |
| 7 | * functions, this is by concept samilar to the MFP configuration |
| 8 | * on PXA3xx, what's more important, the low power pin state and |
| 9 | * wakeup detection are also supported by the same framework. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/sysdev.h> |
| 20 | |
Eric Miao | da065a0 | 2009-01-06 18:29:01 +0800 | [diff] [blame] | 21 | #include <mach/gpio.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 22 | #include <mach/pxa2xx-regs.h> |
| 23 | #include <mach/mfp-pxa2xx.h> |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 24 | |
| 25 | #include "generic.h" |
| 26 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 27 | #define PGSR(x) __REG2(0x40F00020, (x) << 2) |
| 28 | #define __GAFR(u, x) __REG2((u) ? 0x40E00058 : 0x40E00054, (x) << 3) |
| 29 | #define GAFR_L(x) __GAFR(0, x) |
| 30 | #define GAFR_U(x) __GAFR(1, x) |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 31 | |
| 32 | #define PWER_WE35 (1 << 24) |
| 33 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 34 | struct gpio_desc { |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 35 | unsigned valid : 1; |
| 36 | unsigned can_wakeup : 1; |
| 37 | unsigned keypad_gpio : 1; |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 38 | unsigned dir_inverted : 1; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 39 | unsigned int mask; /* bit mask in PWER or PKWR */ |
Robert Jarzmik | 9968711 | 2008-11-13 23:30:00 +0100 | [diff] [blame] | 40 | unsigned int mux_mask; /* bit mask of muxed gpio bits, 0 if no mux */ |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 41 | unsigned long config; |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 42 | }; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 43 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 44 | static struct gpio_desc gpio_desc[MFP_PIN_GPIO127 + 1]; |
| 45 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 46 | static unsigned long gpdr_lpm[4]; |
Eric Miao | 566b450 | 2008-06-16 09:47:47 +0800 | [diff] [blame] | 47 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 48 | static int __mfp_config_gpio(unsigned gpio, unsigned long c) |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 49 | { |
| 50 | unsigned long gafr, mask = GPIO_bit(gpio); |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 51 | int bank = gpio_to_bank(gpio); |
| 52 | int uorl = !!(gpio & 0x10); /* GAFRx_U or GAFRx_L ? */ |
| 53 | int shft = (gpio & 0xf) << 1; |
| 54 | int fn = MFP_AF(c); |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 55 | int is_out = (c & MFP_DIR_OUT) ? 1 : 0; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 56 | |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 57 | if (fn > 3) |
| 58 | return -EINVAL; |
| 59 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 60 | /* alternate function and direction at run-time */ |
| 61 | gafr = (uorl == 0) ? GAFR_L(bank) : GAFR_U(bank); |
| 62 | gafr = (gafr & ~(0x3 << shft)) | (fn << shft); |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 63 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 64 | if (uorl == 0) |
| 65 | GAFR_L(bank) = gafr; |
| 66 | else |
| 67 | GAFR_U(bank) = gafr; |
| 68 | |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 69 | if (is_out ^ gpio_desc[gpio].dir_inverted) |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 70 | GPDR(gpio) |= mask; |
| 71 | else |
| 72 | GPDR(gpio) &= ~mask; |
| 73 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 74 | /* alternate function and direction at low power mode */ |
| 75 | switch (c & MFP_LPM_STATE_MASK) { |
| 76 | case MFP_LPM_DRIVE_HIGH: |
| 77 | PGSR(bank) |= mask; |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 78 | is_out = 1; |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 79 | break; |
| 80 | case MFP_LPM_DRIVE_LOW: |
| 81 | PGSR(bank) &= ~mask; |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 82 | is_out = 1; |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 83 | break; |
| 84 | case MFP_LPM_DEFAULT: |
| 85 | break; |
| 86 | default: |
| 87 | /* warning and fall through, treat as MFP_LPM_DEFAULT */ |
| 88 | pr_warning("%s: GPIO%d: unsupported low power mode\n", |
| 89 | __func__, gpio); |
| 90 | break; |
| 91 | } |
| 92 | |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 93 | if (is_out ^ gpio_desc[gpio].dir_inverted) |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 94 | gpdr_lpm[bank] |= mask; |
| 95 | else |
| 96 | gpdr_lpm[bank] &= ~mask; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 97 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 98 | /* give early warning if MFP_LPM_CAN_WAKEUP is set on the |
| 99 | * configurations of those pins not able to wakeup |
| 100 | */ |
| 101 | if ((c & MFP_LPM_CAN_WAKEUP) && !gpio_desc[gpio].can_wakeup) { |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 102 | pr_warning("%s: GPIO%d unable to wakeup\n", |
| 103 | __func__, gpio); |
| 104 | return -EINVAL; |
| 105 | } |
| 106 | |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 107 | if ((c & MFP_LPM_CAN_WAKEUP) && is_out) { |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 108 | pr_warning("%s: output GPIO%d unable to wakeup\n", |
| 109 | __func__, gpio); |
| 110 | return -EINVAL; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
Eric Miao | 0fedb0ca | 2008-06-16 09:38:27 +0800 | [diff] [blame] | 116 | static inline int __mfp_validate(int mfp) |
| 117 | { |
| 118 | int gpio = mfp_to_gpio(mfp); |
| 119 | |
| 120 | if ((mfp > MFP_PIN_GPIO127) || !gpio_desc[gpio].valid) { |
| 121 | pr_warning("%s: GPIO%d is invalid pin\n", __func__, gpio); |
| 122 | return -1; |
| 123 | } |
| 124 | |
| 125 | return gpio; |
| 126 | } |
| 127 | |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 128 | void pxa2xx_mfp_config(unsigned long *mfp_cfgs, int num) |
| 129 | { |
| 130 | unsigned long flags; |
| 131 | unsigned long *c; |
| 132 | int i, gpio; |
| 133 | |
| 134 | for (i = 0, c = mfp_cfgs; i < num; i++, c++) { |
| 135 | |
Eric Miao | 0fedb0ca | 2008-06-16 09:38:27 +0800 | [diff] [blame] | 136 | gpio = __mfp_validate(MFP_PIN(*c)); |
| 137 | if (gpio < 0) |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 138 | continue; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 139 | |
| 140 | local_irq_save(flags); |
| 141 | |
| 142 | gpio_desc[gpio].config = *c; |
| 143 | __mfp_config_gpio(gpio, *c); |
| 144 | |
| 145 | local_irq_restore(flags); |
| 146 | } |
| 147 | } |
| 148 | |
Eric Miao | 566b450 | 2008-06-16 09:47:47 +0800 | [diff] [blame] | 149 | void pxa2xx_mfp_set_lpm(int mfp, unsigned long lpm) |
| 150 | { |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 151 | unsigned long flags, c; |
Eric Miao | 566b450 | 2008-06-16 09:47:47 +0800 | [diff] [blame] | 152 | int gpio; |
| 153 | |
| 154 | gpio = __mfp_validate(mfp); |
| 155 | if (gpio < 0) |
| 156 | return; |
| 157 | |
| 158 | local_irq_save(flags); |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 159 | |
| 160 | c = gpio_desc[gpio].config; |
| 161 | c = (c & ~MFP_LPM_STATE_MASK) | lpm; |
| 162 | __mfp_config_gpio(gpio, c); |
| 163 | |
Eric Miao | 566b450 | 2008-06-16 09:47:47 +0800 | [diff] [blame] | 164 | local_irq_restore(flags); |
| 165 | } |
| 166 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 167 | int gpio_set_wake(unsigned int gpio, unsigned int on) |
| 168 | { |
| 169 | struct gpio_desc *d; |
Robert Jarzmik | 9968711 | 2008-11-13 23:30:00 +0100 | [diff] [blame] | 170 | unsigned long c, mux_taken; |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 171 | |
| 172 | if (gpio > mfp_to_gpio(MFP_PIN_GPIO127)) |
| 173 | return -EINVAL; |
| 174 | |
| 175 | d = &gpio_desc[gpio]; |
| 176 | c = d->config; |
| 177 | |
| 178 | if (!d->valid) |
| 179 | return -EINVAL; |
| 180 | |
| 181 | if (d->keypad_gpio) |
| 182 | return -EINVAL; |
| 183 | |
Robert Jarzmik | 9968711 | 2008-11-13 23:30:00 +0100 | [diff] [blame] | 184 | mux_taken = (PWER & d->mux_mask) & (~d->mask); |
| 185 | if (on && mux_taken) |
| 186 | return -EBUSY; |
| 187 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 188 | if (d->can_wakeup && (c & MFP_LPM_CAN_WAKEUP)) { |
| 189 | if (on) { |
Robert Jarzmik | 9968711 | 2008-11-13 23:30:00 +0100 | [diff] [blame] | 190 | PWER = (PWER & ~d->mux_mask) | d->mask; |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 191 | |
| 192 | if (c & MFP_LPM_EDGE_RISE) |
| 193 | PRER |= d->mask; |
| 194 | else |
| 195 | PRER &= ~d->mask; |
| 196 | |
| 197 | if (c & MFP_LPM_EDGE_FALL) |
| 198 | PFER |= d->mask; |
| 199 | else |
| 200 | PFER &= ~d->mask; |
| 201 | } else { |
| 202 | PWER &= ~d->mask; |
| 203 | PRER &= ~d->mask; |
| 204 | PFER &= ~d->mask; |
| 205 | } |
| 206 | } |
| 207 | return 0; |
| 208 | } |
| 209 | |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 210 | #ifdef CONFIG_PXA25x |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 211 | static void __init pxa25x_mfp_init(void) |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 212 | { |
| 213 | int i; |
| 214 | |
Eric Miao | ddd244d | 2008-11-26 17:06:42 +0800 | [diff] [blame] | 215 | for (i = 0; i <= pxa_last_gpio; i++) |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 216 | gpio_desc[i].valid = 1; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 217 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 218 | for (i = 0; i <= 15; i++) { |
| 219 | gpio_desc[i].can_wakeup = 1; |
| 220 | gpio_desc[i].mask = GPIO_bit(i); |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 221 | } |
Eric Miao | 067455a | 2008-11-26 18:12:04 +0800 | [diff] [blame] | 222 | |
| 223 | /* PXA26x has additional 4 GPIOs (86/87/88/89) which has the |
| 224 | * direction bit inverted in GPDR2. See PXA26x DM 4.1.1. |
| 225 | */ |
| 226 | for (i = 86; i <= pxa_last_gpio; i++) |
| 227 | gpio_desc[i].dir_inverted = 1; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 228 | } |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 229 | #else |
| 230 | static inline void pxa25x_mfp_init(void) {} |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 231 | #endif /* CONFIG_PXA25x */ |
| 232 | |
| 233 | #ifdef CONFIG_PXA27x |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 234 | static int pxa27x_pkwr_gpio[] = { |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 235 | 13, 16, 17, 34, 36, 37, 38, 39, 90, 91, 93, 94, |
| 236 | 95, 96, 97, 98, 99, 100, 101, 102 |
| 237 | }; |
| 238 | |
eric miao | c0a596d | 2008-03-11 09:46:28 +0800 | [diff] [blame] | 239 | int keypad_set_wake(unsigned int on) |
| 240 | { |
| 241 | unsigned int i, gpio, mask = 0; |
| 242 | |
| 243 | if (!on) { |
| 244 | PKWR = 0; |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | for (i = 0; i < ARRAY_SIZE(pxa27x_pkwr_gpio); i++) { |
| 249 | |
| 250 | gpio = pxa27x_pkwr_gpio[i]; |
| 251 | |
| 252 | if (gpio_desc[gpio].config & MFP_LPM_CAN_WAKEUP) |
| 253 | mask |= gpio_desc[gpio].mask; |
| 254 | } |
| 255 | |
| 256 | PKWR = mask; |
| 257 | return 0; |
| 258 | } |
| 259 | |
Robert Jarzmik | 9968711 | 2008-11-13 23:30:00 +0100 | [diff] [blame] | 260 | #define PWER_WEMUX2_GPIO38 (1 << 16) |
| 261 | #define PWER_WEMUX2_GPIO53 (2 << 16) |
| 262 | #define PWER_WEMUX2_GPIO40 (3 << 16) |
| 263 | #define PWER_WEMUX2_GPIO36 (4 << 16) |
| 264 | #define PWER_WEMUX2_MASK (7 << 16) |
| 265 | #define PWER_WEMUX3_GPIO31 (1 << 19) |
| 266 | #define PWER_WEMUX3_GPIO113 (2 << 19) |
| 267 | #define PWER_WEMUX3_MASK (3 << 19) |
| 268 | |
| 269 | #define INIT_GPIO_DESC_MUXED(mux, gpio) \ |
| 270 | do { \ |
| 271 | gpio_desc[(gpio)].can_wakeup = 1; \ |
| 272 | gpio_desc[(gpio)].mask = PWER_ ## mux ## _GPIO ##gpio; \ |
| 273 | gpio_desc[(gpio)].mux_mask = PWER_ ## mux ## _MASK; \ |
| 274 | } while (0) |
| 275 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 276 | static void __init pxa27x_mfp_init(void) |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 277 | { |
| 278 | int i, gpio; |
| 279 | |
Eric Miao | ddd244d | 2008-11-26 17:06:42 +0800 | [diff] [blame] | 280 | for (i = 0; i <= pxa_last_gpio; i++) { |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 281 | /* skip GPIO2, 5, 6, 7, 8, they are not |
| 282 | * valid pins allow configuration |
| 283 | */ |
| 284 | if (i == 2 || i == 5 || i == 6 || i == 7 || i == 8) |
| 285 | continue; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 286 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 287 | gpio_desc[i].valid = 1; |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 288 | } |
| 289 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 290 | /* Keypad GPIOs */ |
| 291 | for (i = 0; i < ARRAY_SIZE(pxa27x_pkwr_gpio); i++) { |
| 292 | gpio = pxa27x_pkwr_gpio[i]; |
| 293 | gpio_desc[gpio].can_wakeup = 1; |
| 294 | gpio_desc[gpio].keypad_gpio = 1; |
| 295 | gpio_desc[gpio].mask = 1 << i; |
| 296 | } |
| 297 | |
| 298 | /* Overwrite GPIO13 as a PWER wakeup source */ |
| 299 | for (i = 0; i <= 15; i++) { |
| 300 | /* skip GPIO2, 5, 6, 7, 8 */ |
| 301 | if (GPIO_bit(i) & 0x1e4) |
| 302 | continue; |
| 303 | |
| 304 | gpio_desc[i].can_wakeup = 1; |
| 305 | gpio_desc[i].mask = GPIO_bit(i); |
| 306 | } |
| 307 | |
| 308 | gpio_desc[35].can_wakeup = 1; |
| 309 | gpio_desc[35].mask = PWER_WE35; |
| 310 | |
Robert Jarzmik | 9968711 | 2008-11-13 23:30:00 +0100 | [diff] [blame] | 311 | INIT_GPIO_DESC_MUXED(WEMUX3, 31); |
| 312 | INIT_GPIO_DESC_MUXED(WEMUX3, 113); |
| 313 | INIT_GPIO_DESC_MUXED(WEMUX2, 38); |
| 314 | INIT_GPIO_DESC_MUXED(WEMUX2, 53); |
| 315 | INIT_GPIO_DESC_MUXED(WEMUX2, 40); |
| 316 | INIT_GPIO_DESC_MUXED(WEMUX2, 36); |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 317 | } |
| 318 | #else |
| 319 | static inline void pxa27x_mfp_init(void) {} |
| 320 | #endif /* CONFIG_PXA27x */ |
| 321 | |
| 322 | #ifdef CONFIG_PM |
| 323 | static unsigned long saved_gafr[2][4]; |
| 324 | static unsigned long saved_gpdr[4]; |
| 325 | |
| 326 | static int pxa2xx_mfp_suspend(struct sys_device *d, pm_message_t state) |
| 327 | { |
| 328 | int i; |
| 329 | |
Eric Miao | ddd244d | 2008-11-26 17:06:42 +0800 | [diff] [blame] | 330 | for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) { |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 331 | |
| 332 | saved_gafr[0][i] = GAFR_L(i); |
| 333 | saved_gafr[1][i] = GAFR_U(i); |
| 334 | saved_gpdr[i] = GPDR(i * 32); |
| 335 | |
| 336 | GPDR(i * 32) = gpdr_lpm[i]; |
| 337 | } |
eric miao | 7facc2f9 | 2008-03-05 17:16:29 +0800 | [diff] [blame] | 338 | return 0; |
| 339 | } |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 340 | |
| 341 | static int pxa2xx_mfp_resume(struct sys_device *d) |
| 342 | { |
| 343 | int i; |
| 344 | |
Eric Miao | ddd244d | 2008-11-26 17:06:42 +0800 | [diff] [blame] | 345 | for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) { |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 346 | GAFR_L(i) = saved_gafr[0][i]; |
| 347 | GAFR_U(i) = saved_gafr[1][i]; |
| 348 | GPDR(i * 32) = saved_gpdr[i]; |
| 349 | } |
| 350 | PSSR = PSSR_RDH | PSSR_PH; |
| 351 | return 0; |
| 352 | } |
| 353 | #else |
| 354 | #define pxa2xx_mfp_suspend NULL |
| 355 | #define pxa2xx_mfp_resume NULL |
| 356 | #endif |
| 357 | |
| 358 | struct sysdev_class pxa2xx_mfp_sysclass = { |
| 359 | .name = "mfp", |
| 360 | .suspend = pxa2xx_mfp_suspend, |
| 361 | .resume = pxa2xx_mfp_resume, |
| 362 | }; |
| 363 | |
| 364 | static int __init pxa2xx_mfp_init(void) |
| 365 | { |
| 366 | int i; |
| 367 | |
Eric Miao | e7f3c60 | 2008-09-27 18:07:48 +0800 | [diff] [blame] | 368 | if (!cpu_is_pxa2xx()) |
| 369 | return 0; |
| 370 | |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 371 | if (cpu_is_pxa25x()) |
| 372 | pxa25x_mfp_init(); |
| 373 | |
| 374 | if (cpu_is_pxa27x()) |
| 375 | pxa27x_mfp_init(); |
| 376 | |
| 377 | /* initialize gafr_run[], pgsr_lpm[] from existing values */ |
Eric Miao | ddd244d | 2008-11-26 17:06:42 +0800 | [diff] [blame] | 378 | for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) |
Eric Miao | 5a3d965 | 2008-09-03 18:06:34 +0800 | [diff] [blame] | 379 | gpdr_lpm[i] = GPDR(i * 32); |
| 380 | |
| 381 | return sysdev_class_register(&pxa2xx_mfp_sysclass); |
| 382 | } |
| 383 | postcore_initcall(pxa2xx_mfp_init); |