Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 1 | /* linux/arch/arm/mach-exynos4/gpiolib.c |
| 2 | * |
| 3 | * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com |
| 5 | * |
| 6 | * EXYNOS4 - GPIOlib support |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/irq.h> |
| 15 | #include <linux/io.h> |
| 16 | #include <linux/gpio.h> |
| 17 | |
| 18 | #include <mach/map.h> |
| 19 | |
| 20 | #include <plat/gpio-core.h> |
| 21 | #include <plat/gpio-cfg.h> |
| 22 | #include <plat/gpio-cfg-helpers.h> |
| 23 | |
Thomas Abraham | 0bf8fa0 | 2011-06-07 14:04:49 +0530 | [diff] [blame] | 24 | int s3c_gpio_setpull_exynos4(struct s3c_gpio_chip *chip, |
| 25 | unsigned int off, s3c_gpio_pull_t pull) |
| 26 | { |
| 27 | if (pull == S3C_GPIO_PULL_UP) |
| 28 | pull = 3; |
| 29 | |
| 30 | return s3c_gpio_setpull_updown(chip, off, pull); |
| 31 | } |
| 32 | |
| 33 | s3c_gpio_pull_t s3c_gpio_getpull_exynos4(struct s3c_gpio_chip *chip, |
| 34 | unsigned int off) |
| 35 | { |
| 36 | s3c_gpio_pull_t pull; |
| 37 | |
| 38 | pull = s3c_gpio_getpull_updown(chip, off); |
| 39 | if (pull == 3) |
| 40 | pull = S3C_GPIO_PULL_UP; |
| 41 | |
| 42 | return pull; |
| 43 | } |
| 44 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 45 | static struct s3c_gpio_cfg gpio_cfg = { |
| 46 | .set_config = s3c_gpio_setcfg_s3c64xx_4bit, |
Thomas Abraham | 0bf8fa0 | 2011-06-07 14:04:49 +0530 | [diff] [blame] | 47 | .set_pull = s3c_gpio_setpull_exynos4, |
| 48 | .get_pull = s3c_gpio_getpull_exynos4, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | static struct s3c_gpio_cfg gpio_cfg_noint = { |
| 52 | .set_config = s3c_gpio_setcfg_s3c64xx_4bit, |
Thomas Abraham | 0bf8fa0 | 2011-06-07 14:04:49 +0530 | [diff] [blame] | 53 | .set_pull = s3c_gpio_setpull_exynos4, |
| 54 | .get_pull = s3c_gpio_getpull_exynos4, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 55 | }; |
| 56 | |
| 57 | /* |
| 58 | * Following are the gpio banks in v310. |
| 59 | * |
| 60 | * The 'config' member when left to NULL, is initialized to the default |
| 61 | * structure gpio_cfg in the init function below. |
| 62 | * |
| 63 | * The 'base' member is also initialized in the init function below. |
| 64 | * Note: The initialization of 'base' member of s3c_gpio_chip structure |
| 65 | * uses the above macro and depends on the banks being listed in order here. |
| 66 | */ |
| 67 | static struct s3c_gpio_chip exynos4_gpio_part1_4bit[] = { |
| 68 | { |
| 69 | .chip = { |
| 70 | .base = EXYNOS4_GPA0(0), |
| 71 | .ngpio = EXYNOS4_GPIO_A0_NR, |
| 72 | .label = "GPA0", |
| 73 | }, |
| 74 | }, { |
| 75 | .chip = { |
| 76 | .base = EXYNOS4_GPA1(0), |
| 77 | .ngpio = EXYNOS4_GPIO_A1_NR, |
| 78 | .label = "GPA1", |
| 79 | }, |
| 80 | }, { |
| 81 | .chip = { |
| 82 | .base = EXYNOS4_GPB(0), |
| 83 | .ngpio = EXYNOS4_GPIO_B_NR, |
| 84 | .label = "GPB", |
| 85 | }, |
| 86 | }, { |
| 87 | .chip = { |
| 88 | .base = EXYNOS4_GPC0(0), |
| 89 | .ngpio = EXYNOS4_GPIO_C0_NR, |
| 90 | .label = "GPC0", |
| 91 | }, |
| 92 | }, { |
| 93 | .chip = { |
| 94 | .base = EXYNOS4_GPC1(0), |
| 95 | .ngpio = EXYNOS4_GPIO_C1_NR, |
| 96 | .label = "GPC1", |
| 97 | }, |
| 98 | }, { |
| 99 | .chip = { |
| 100 | .base = EXYNOS4_GPD0(0), |
| 101 | .ngpio = EXYNOS4_GPIO_D0_NR, |
| 102 | .label = "GPD0", |
| 103 | }, |
| 104 | }, { |
| 105 | .chip = { |
| 106 | .base = EXYNOS4_GPD1(0), |
| 107 | .ngpio = EXYNOS4_GPIO_D1_NR, |
| 108 | .label = "GPD1", |
| 109 | }, |
| 110 | }, { |
| 111 | .chip = { |
| 112 | .base = EXYNOS4_GPE0(0), |
| 113 | .ngpio = EXYNOS4_GPIO_E0_NR, |
| 114 | .label = "GPE0", |
| 115 | }, |
| 116 | }, { |
| 117 | .chip = { |
| 118 | .base = EXYNOS4_GPE1(0), |
| 119 | .ngpio = EXYNOS4_GPIO_E1_NR, |
| 120 | .label = "GPE1", |
| 121 | }, |
| 122 | }, { |
| 123 | .chip = { |
| 124 | .base = EXYNOS4_GPE2(0), |
| 125 | .ngpio = EXYNOS4_GPIO_E2_NR, |
| 126 | .label = "GPE2", |
| 127 | }, |
| 128 | }, { |
| 129 | .chip = { |
| 130 | .base = EXYNOS4_GPE3(0), |
| 131 | .ngpio = EXYNOS4_GPIO_E3_NR, |
| 132 | .label = "GPE3", |
| 133 | }, |
| 134 | }, { |
| 135 | .chip = { |
| 136 | .base = EXYNOS4_GPE4(0), |
| 137 | .ngpio = EXYNOS4_GPIO_E4_NR, |
| 138 | .label = "GPE4", |
| 139 | }, |
| 140 | }, { |
| 141 | .chip = { |
| 142 | .base = EXYNOS4_GPF0(0), |
| 143 | .ngpio = EXYNOS4_GPIO_F0_NR, |
| 144 | .label = "GPF0", |
| 145 | }, |
| 146 | }, { |
| 147 | .chip = { |
| 148 | .base = EXYNOS4_GPF1(0), |
| 149 | .ngpio = EXYNOS4_GPIO_F1_NR, |
| 150 | .label = "GPF1", |
| 151 | }, |
| 152 | }, { |
| 153 | .chip = { |
| 154 | .base = EXYNOS4_GPF2(0), |
| 155 | .ngpio = EXYNOS4_GPIO_F2_NR, |
| 156 | .label = "GPF2", |
| 157 | }, |
| 158 | }, { |
| 159 | .chip = { |
| 160 | .base = EXYNOS4_GPF3(0), |
| 161 | .ngpio = EXYNOS4_GPIO_F3_NR, |
| 162 | .label = "GPF3", |
| 163 | }, |
| 164 | }, |
| 165 | }; |
| 166 | |
| 167 | static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = { |
| 168 | { |
| 169 | .chip = { |
| 170 | .base = EXYNOS4_GPJ0(0), |
| 171 | .ngpio = EXYNOS4_GPIO_J0_NR, |
| 172 | .label = "GPJ0", |
| 173 | }, |
| 174 | }, { |
| 175 | .chip = { |
| 176 | .base = EXYNOS4_GPJ1(0), |
| 177 | .ngpio = EXYNOS4_GPIO_J1_NR, |
| 178 | .label = "GPJ1", |
| 179 | }, |
| 180 | }, { |
| 181 | .chip = { |
| 182 | .base = EXYNOS4_GPK0(0), |
| 183 | .ngpio = EXYNOS4_GPIO_K0_NR, |
| 184 | .label = "GPK0", |
| 185 | }, |
| 186 | }, { |
| 187 | .chip = { |
| 188 | .base = EXYNOS4_GPK1(0), |
| 189 | .ngpio = EXYNOS4_GPIO_K1_NR, |
| 190 | .label = "GPK1", |
| 191 | }, |
| 192 | }, { |
| 193 | .chip = { |
| 194 | .base = EXYNOS4_GPK2(0), |
| 195 | .ngpio = EXYNOS4_GPIO_K2_NR, |
| 196 | .label = "GPK2", |
| 197 | }, |
| 198 | }, { |
| 199 | .chip = { |
| 200 | .base = EXYNOS4_GPK3(0), |
| 201 | .ngpio = EXYNOS4_GPIO_K3_NR, |
| 202 | .label = "GPK3", |
| 203 | }, |
| 204 | }, { |
| 205 | .chip = { |
| 206 | .base = EXYNOS4_GPL0(0), |
| 207 | .ngpio = EXYNOS4_GPIO_L0_NR, |
| 208 | .label = "GPL0", |
| 209 | }, |
| 210 | }, { |
| 211 | .chip = { |
| 212 | .base = EXYNOS4_GPL1(0), |
| 213 | .ngpio = EXYNOS4_GPIO_L1_NR, |
| 214 | .label = "GPL1", |
| 215 | }, |
| 216 | }, { |
| 217 | .chip = { |
| 218 | .base = EXYNOS4_GPL2(0), |
| 219 | .ngpio = EXYNOS4_GPIO_L2_NR, |
| 220 | .label = "GPL2", |
| 221 | }, |
| 222 | }, { |
Marek Szyprowski | 47a9c0e | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 223 | .config = &gpio_cfg_noint, |
| 224 | .chip = { |
| 225 | .base = EXYNOS4_GPY0(0), |
| 226 | .ngpio = EXYNOS4_GPIO_Y0_NR, |
| 227 | .label = "GPY0", |
| 228 | }, |
| 229 | }, { |
| 230 | .config = &gpio_cfg_noint, |
| 231 | .chip = { |
| 232 | .base = EXYNOS4_GPY1(0), |
| 233 | .ngpio = EXYNOS4_GPIO_Y1_NR, |
| 234 | .label = "GPY1", |
| 235 | }, |
| 236 | }, { |
| 237 | .config = &gpio_cfg_noint, |
| 238 | .chip = { |
| 239 | .base = EXYNOS4_GPY2(0), |
| 240 | .ngpio = EXYNOS4_GPIO_Y2_NR, |
| 241 | .label = "GPY2", |
| 242 | }, |
| 243 | }, { |
| 244 | .config = &gpio_cfg_noint, |
| 245 | .chip = { |
| 246 | .base = EXYNOS4_GPY3(0), |
| 247 | .ngpio = EXYNOS4_GPIO_Y3_NR, |
| 248 | .label = "GPY3", |
| 249 | }, |
| 250 | }, { |
| 251 | .config = &gpio_cfg_noint, |
| 252 | .chip = { |
| 253 | .base = EXYNOS4_GPY4(0), |
| 254 | .ngpio = EXYNOS4_GPIO_Y4_NR, |
| 255 | .label = "GPY4", |
| 256 | }, |
| 257 | }, { |
| 258 | .config = &gpio_cfg_noint, |
| 259 | .chip = { |
| 260 | .base = EXYNOS4_GPY5(0), |
| 261 | .ngpio = EXYNOS4_GPIO_Y5_NR, |
| 262 | .label = "GPY5", |
| 263 | }, |
| 264 | }, { |
| 265 | .config = &gpio_cfg_noint, |
| 266 | .chip = { |
| 267 | .base = EXYNOS4_GPY6(0), |
| 268 | .ngpio = EXYNOS4_GPIO_Y6_NR, |
| 269 | .label = "GPY6", |
| 270 | }, |
| 271 | }, { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 272 | .base = (S5P_VA_GPIO2 + 0xC00), |
| 273 | .config = &gpio_cfg_noint, |
| 274 | .irq_base = IRQ_EINT(0), |
| 275 | .chip = { |
| 276 | .base = EXYNOS4_GPX0(0), |
| 277 | .ngpio = EXYNOS4_GPIO_X0_NR, |
| 278 | .label = "GPX0", |
| 279 | .to_irq = samsung_gpiolib_to_irq, |
| 280 | }, |
| 281 | }, { |
| 282 | .base = (S5P_VA_GPIO2 + 0xC20), |
| 283 | .config = &gpio_cfg_noint, |
| 284 | .irq_base = IRQ_EINT(8), |
| 285 | .chip = { |
| 286 | .base = EXYNOS4_GPX1(0), |
| 287 | .ngpio = EXYNOS4_GPIO_X1_NR, |
| 288 | .label = "GPX1", |
| 289 | .to_irq = samsung_gpiolib_to_irq, |
| 290 | }, |
| 291 | }, { |
| 292 | .base = (S5P_VA_GPIO2 + 0xC40), |
| 293 | .config = &gpio_cfg_noint, |
| 294 | .irq_base = IRQ_EINT(16), |
| 295 | .chip = { |
| 296 | .base = EXYNOS4_GPX2(0), |
| 297 | .ngpio = EXYNOS4_GPIO_X2_NR, |
| 298 | .label = "GPX2", |
| 299 | .to_irq = samsung_gpiolib_to_irq, |
| 300 | }, |
| 301 | }, { |
| 302 | .base = (S5P_VA_GPIO2 + 0xC60), |
| 303 | .config = &gpio_cfg_noint, |
| 304 | .irq_base = IRQ_EINT(24), |
| 305 | .chip = { |
| 306 | .base = EXYNOS4_GPX3(0), |
| 307 | .ngpio = EXYNOS4_GPIO_X3_NR, |
| 308 | .label = "GPX3", |
| 309 | .to_irq = samsung_gpiolib_to_irq, |
| 310 | }, |
| 311 | }, |
| 312 | }; |
| 313 | |
| 314 | static struct s3c_gpio_chip exynos4_gpio_part3_4bit[] = { |
| 315 | { |
| 316 | .chip = { |
| 317 | .base = EXYNOS4_GPZ(0), |
| 318 | .ngpio = EXYNOS4_GPIO_Z_NR, |
| 319 | .label = "GPZ", |
| 320 | }, |
| 321 | }, |
| 322 | }; |
| 323 | |
| 324 | static __init int exynos4_gpiolib_init(void) |
| 325 | { |
| 326 | struct s3c_gpio_chip *chip; |
| 327 | int i; |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 328 | int group = 0; |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 329 | int nr_chips; |
| 330 | |
| 331 | /* GPIO part 1 */ |
| 332 | |
| 333 | chip = exynos4_gpio_part1_4bit; |
| 334 | nr_chips = ARRAY_SIZE(exynos4_gpio_part1_4bit); |
| 335 | |
| 336 | for (i = 0; i < nr_chips; i++, chip++) { |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 337 | if (chip->config == NULL) { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 338 | chip->config = &gpio_cfg; |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 339 | /* Assign the GPIO interrupt group */ |
| 340 | chip->group = group++; |
| 341 | } |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 342 | if (chip->base == NULL) |
| 343 | chip->base = S5P_VA_GPIO1 + (i) * 0x20; |
| 344 | } |
| 345 | |
| 346 | samsung_gpiolib_add_4bit_chips(exynos4_gpio_part1_4bit, nr_chips); |
| 347 | |
| 348 | /* GPIO part 2 */ |
| 349 | |
| 350 | chip = exynos4_gpio_part2_4bit; |
| 351 | nr_chips = ARRAY_SIZE(exynos4_gpio_part2_4bit); |
| 352 | |
| 353 | for (i = 0; i < nr_chips; i++, chip++) { |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 354 | if (chip->config == NULL) { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 355 | chip->config = &gpio_cfg; |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 356 | /* Assign the GPIO interrupt group */ |
| 357 | chip->group = group++; |
| 358 | } |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 359 | if (chip->base == NULL) |
| 360 | chip->base = S5P_VA_GPIO2 + (i) * 0x20; |
| 361 | } |
| 362 | |
| 363 | samsung_gpiolib_add_4bit_chips(exynos4_gpio_part2_4bit, nr_chips); |
| 364 | |
| 365 | /* GPIO part 3 */ |
| 366 | |
| 367 | chip = exynos4_gpio_part3_4bit; |
| 368 | nr_chips = ARRAY_SIZE(exynos4_gpio_part3_4bit); |
| 369 | |
| 370 | for (i = 0; i < nr_chips; i++, chip++) { |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 371 | if (chip->config == NULL) { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 372 | chip->config = &gpio_cfg; |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 373 | /* Assign the GPIO interrupt group */ |
| 374 | chip->group = group++; |
| 375 | } |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 376 | if (chip->base == NULL) |
| 377 | chip->base = S5P_VA_GPIO3 + (i) * 0x20; |
| 378 | } |
| 379 | |
| 380 | samsung_gpiolib_add_4bit_chips(exynos4_gpio_part3_4bit, nr_chips); |
Marek Szyprowski | 721bbd4 | 2011-03-15 21:17:43 +0900 | [diff] [blame] | 381 | s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS); |
| 382 | s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS); |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | core_initcall(exynos4_gpiolib_init); |