Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Driver for the NVIDIA Tegra pinmux |
| 3 | * |
| 4 | * Copyright (c) 2011, NVIDIA CORPORATION. All rights reserved. |
| 5 | * |
| 6 | * Derived from code: |
| 7 | * Copyright (C) 2010 Google, Inc. |
| 8 | * Copyright (C) 2010 NVIDIA Corporation |
| 9 | * Copyright (C) 2009-2011 ST-Ericsson AB |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify it |
| 12 | * under the terms and conditions of the GNU General Public License, |
| 13 | * version 2, as published by the Free Software Foundation. |
| 14 | * |
| 15 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 18 | * more details. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/err.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/io.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/of_device.h> |
| 26 | #include <linux/pinctrl/pinctrl.h> |
| 27 | #include <linux/pinctrl/pinmux.h> |
| 28 | #include <linux/pinctrl/pinconf.h> |
| 29 | |
| 30 | #include <mach/pinconf-tegra.h> |
| 31 | |
| 32 | #include "pinctrl-tegra.h" |
| 33 | |
| 34 | #define DRIVER_NAME "tegra-pinmux-disabled" |
| 35 | |
| 36 | struct tegra_pmx { |
| 37 | struct device *dev; |
| 38 | struct pinctrl_dev *pctl; |
| 39 | |
| 40 | const struct tegra_pinctrl_soc_data *soc; |
| 41 | |
| 42 | int nbanks; |
| 43 | void __iomem **regs; |
| 44 | }; |
| 45 | |
| 46 | static inline u32 pmx_readl(struct tegra_pmx *pmx, u32 bank, u32 reg) |
| 47 | { |
| 48 | return readl(pmx->regs[bank] + reg); |
| 49 | } |
| 50 | |
| 51 | static inline void pmx_writel(struct tegra_pmx *pmx, u32 val, u32 bank, u32 reg) |
| 52 | { |
| 53 | writel(val, pmx->regs[bank] + reg); |
| 54 | } |
| 55 | |
Viresh Kumar | 203c1b3 | 2012-03-30 11:25:40 +0530 | [diff] [blame] | 56 | static int tegra_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 57 | { |
| 58 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 59 | |
Viresh Kumar | 203c1b3 | 2012-03-30 11:25:40 +0530 | [diff] [blame] | 60 | return pmx->soc->ngroups; |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | static const char *tegra_pinctrl_get_group_name(struct pinctrl_dev *pctldev, |
| 64 | unsigned group) |
| 65 | { |
| 66 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 67 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 68 | return pmx->soc->groups[group].name; |
| 69 | } |
| 70 | |
| 71 | static int tegra_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, |
| 72 | unsigned group, |
| 73 | const unsigned **pins, |
| 74 | unsigned *num_pins) |
| 75 | { |
| 76 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 77 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 78 | *pins = pmx->soc->groups[group].pins; |
| 79 | *num_pins = pmx->soc->groups[group].npins; |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static void tegra_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, |
| 85 | struct seq_file *s, |
| 86 | unsigned offset) |
| 87 | { |
| 88 | seq_printf(s, " " DRIVER_NAME); |
| 89 | } |
| 90 | |
| 91 | static struct pinctrl_ops tegra_pinctrl_ops = { |
Viresh Kumar | 203c1b3 | 2012-03-30 11:25:40 +0530 | [diff] [blame] | 92 | .get_groups_count = tegra_pinctrl_get_groups_count, |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 93 | .get_group_name = tegra_pinctrl_get_group_name, |
| 94 | .get_group_pins = tegra_pinctrl_get_group_pins, |
| 95 | .pin_dbg_show = tegra_pinctrl_pin_dbg_show, |
| 96 | }; |
| 97 | |
Viresh Kumar | 203c1b3 | 2012-03-30 11:25:40 +0530 | [diff] [blame] | 98 | static int tegra_pinctrl_get_funcs_count(struct pinctrl_dev *pctldev) |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 99 | { |
| 100 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 101 | |
Viresh Kumar | 203c1b3 | 2012-03-30 11:25:40 +0530 | [diff] [blame] | 102 | return pmx->soc->nfunctions; |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | static const char *tegra_pinctrl_get_func_name(struct pinctrl_dev *pctldev, |
| 106 | unsigned function) |
| 107 | { |
| 108 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 109 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 110 | return pmx->soc->functions[function].name; |
| 111 | } |
| 112 | |
| 113 | static int tegra_pinctrl_get_func_groups(struct pinctrl_dev *pctldev, |
| 114 | unsigned function, |
| 115 | const char * const **groups, |
| 116 | unsigned * const num_groups) |
| 117 | { |
| 118 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 119 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 120 | *groups = pmx->soc->functions[function].groups; |
| 121 | *num_groups = pmx->soc->functions[function].ngroups; |
| 122 | |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | static int tegra_pinctrl_enable(struct pinctrl_dev *pctldev, unsigned function, |
| 127 | unsigned group) |
| 128 | { |
| 129 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 130 | const struct tegra_pingroup *g; |
| 131 | int i; |
| 132 | u32 val; |
| 133 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 134 | g = &pmx->soc->groups[group]; |
| 135 | |
| 136 | if (g->mux_reg < 0) |
| 137 | return -EINVAL; |
| 138 | |
| 139 | for (i = 0; i < ARRAY_SIZE(g->funcs); i++) { |
| 140 | if (g->funcs[i] == function) |
| 141 | break; |
| 142 | } |
| 143 | if (i == ARRAY_SIZE(g->funcs)) |
| 144 | return -EINVAL; |
| 145 | |
| 146 | val = pmx_readl(pmx, g->mux_bank, g->mux_reg); |
| 147 | val &= ~(0x3 << g->mux_bit); |
| 148 | val |= i << g->mux_bit; |
| 149 | pmx_writel(pmx, val, g->mux_bank, g->mux_reg); |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static void tegra_pinctrl_disable(struct pinctrl_dev *pctldev, |
| 155 | unsigned function, unsigned group) |
| 156 | { |
| 157 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 158 | const struct tegra_pingroup *g; |
| 159 | u32 val; |
| 160 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 161 | g = &pmx->soc->groups[group]; |
| 162 | |
| 163 | if (g->mux_reg < 0) |
| 164 | return; |
| 165 | |
| 166 | val = pmx_readl(pmx, g->mux_bank, g->mux_reg); |
| 167 | val &= ~(0x3 << g->mux_bit); |
| 168 | val |= g->func_safe << g->mux_bit; |
| 169 | pmx_writel(pmx, val, g->mux_bank, g->mux_reg); |
| 170 | } |
| 171 | |
| 172 | static struct pinmux_ops tegra_pinmux_ops = { |
Viresh Kumar | 203c1b3 | 2012-03-30 11:25:40 +0530 | [diff] [blame] | 173 | .get_functions_count = tegra_pinctrl_get_funcs_count, |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 174 | .get_function_name = tegra_pinctrl_get_func_name, |
| 175 | .get_function_groups = tegra_pinctrl_get_func_groups, |
| 176 | .enable = tegra_pinctrl_enable, |
| 177 | .disable = tegra_pinctrl_disable, |
| 178 | }; |
| 179 | |
| 180 | static int tegra_pinconf_reg(struct tegra_pmx *pmx, |
| 181 | const struct tegra_pingroup *g, |
| 182 | enum tegra_pinconf_param param, |
| 183 | s8 *bank, s16 *reg, s8 *bit, s8 *width) |
| 184 | { |
| 185 | switch (param) { |
| 186 | case TEGRA_PINCONF_PARAM_PULL: |
| 187 | *bank = g->pupd_bank; |
| 188 | *reg = g->pupd_reg; |
| 189 | *bit = g->pupd_bit; |
| 190 | *width = 2; |
| 191 | break; |
| 192 | case TEGRA_PINCONF_PARAM_TRISTATE: |
| 193 | *bank = g->tri_bank; |
| 194 | *reg = g->tri_reg; |
| 195 | *bit = g->tri_bit; |
| 196 | *width = 1; |
| 197 | break; |
| 198 | case TEGRA_PINCONF_PARAM_ENABLE_INPUT: |
| 199 | *bank = g->einput_bank; |
| 200 | *reg = g->einput_reg; |
| 201 | *bit = g->einput_bit; |
| 202 | *width = 1; |
| 203 | break; |
| 204 | case TEGRA_PINCONF_PARAM_OPEN_DRAIN: |
| 205 | *bank = g->odrain_bank; |
| 206 | *reg = g->odrain_reg; |
| 207 | *bit = g->odrain_bit; |
| 208 | *width = 1; |
| 209 | break; |
| 210 | case TEGRA_PINCONF_PARAM_LOCK: |
| 211 | *bank = g->lock_bank; |
| 212 | *reg = g->lock_reg; |
| 213 | *bit = g->lock_bit; |
| 214 | *width = 1; |
| 215 | break; |
| 216 | case TEGRA_PINCONF_PARAM_IORESET: |
| 217 | *bank = g->ioreset_bank; |
| 218 | *reg = g->ioreset_reg; |
| 219 | *bit = g->ioreset_bit; |
| 220 | *width = 1; |
| 221 | break; |
| 222 | case TEGRA_PINCONF_PARAM_HIGH_SPEED_MODE: |
| 223 | *bank = g->drv_bank; |
| 224 | *reg = g->drv_reg; |
| 225 | *bit = g->hsm_bit; |
| 226 | *width = 1; |
| 227 | break; |
| 228 | case TEGRA_PINCONF_PARAM_SCHMITT: |
| 229 | *bank = g->drv_bank; |
| 230 | *reg = g->drv_reg; |
| 231 | *bit = g->schmitt_bit; |
| 232 | *width = 1; |
| 233 | break; |
| 234 | case TEGRA_PINCONF_PARAM_LOW_POWER_MODE: |
| 235 | *bank = g->drv_bank; |
| 236 | *reg = g->drv_reg; |
| 237 | *bit = g->lpmd_bit; |
Pritesh Raithatha | 74d1426 | 2012-10-17 17:09:36 +0530 | [diff] [blame] | 238 | *width = 2; |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 239 | break; |
| 240 | case TEGRA_PINCONF_PARAM_DRIVE_DOWN_STRENGTH: |
| 241 | *bank = g->drv_bank; |
| 242 | *reg = g->drv_reg; |
| 243 | *bit = g->drvdn_bit; |
| 244 | *width = g->drvdn_width; |
| 245 | break; |
| 246 | case TEGRA_PINCONF_PARAM_DRIVE_UP_STRENGTH: |
| 247 | *bank = g->drv_bank; |
| 248 | *reg = g->drv_reg; |
| 249 | *bit = g->drvup_bit; |
| 250 | *width = g->drvup_width; |
| 251 | break; |
| 252 | case TEGRA_PINCONF_PARAM_SLEW_RATE_FALLING: |
| 253 | *bank = g->drv_bank; |
| 254 | *reg = g->drv_reg; |
| 255 | *bit = g->slwf_bit; |
| 256 | *width = g->slwf_width; |
| 257 | break; |
| 258 | case TEGRA_PINCONF_PARAM_SLEW_RATE_RISING: |
| 259 | *bank = g->drv_bank; |
| 260 | *reg = g->drv_reg; |
| 261 | *bit = g->slwr_bit; |
| 262 | *width = g->slwr_width; |
| 263 | break; |
| 264 | default: |
| 265 | dev_err(pmx->dev, "Invalid config param %04x\n", param); |
| 266 | return -ENOTSUPP; |
| 267 | } |
| 268 | |
| 269 | if (*reg < 0) { |
| 270 | dev_err(pmx->dev, |
| 271 | "Config param %04x not supported on group %s\n", |
| 272 | param, g->name); |
| 273 | return -ENOTSUPP; |
| 274 | } |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
| 279 | static int tegra_pinconf_get(struct pinctrl_dev *pctldev, |
| 280 | unsigned pin, unsigned long *config) |
| 281 | { |
| 282 | return -ENOTSUPP; |
| 283 | } |
| 284 | |
| 285 | static int tegra_pinconf_set(struct pinctrl_dev *pctldev, |
| 286 | unsigned pin, unsigned long config) |
| 287 | { |
| 288 | return -ENOTSUPP; |
| 289 | } |
| 290 | |
| 291 | static int tegra_pinconf_group_get(struct pinctrl_dev *pctldev, |
| 292 | unsigned group, unsigned long *config) |
| 293 | { |
| 294 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 295 | enum tegra_pinconf_param param = TEGRA_PINCONF_UNPACK_PARAM(*config); |
| 296 | u16 arg; |
| 297 | const struct tegra_pingroup *g; |
| 298 | int ret; |
| 299 | s8 bank, bit, width; |
| 300 | s16 reg; |
| 301 | u32 val, mask; |
| 302 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 303 | g = &pmx->soc->groups[group]; |
| 304 | |
| 305 | ret = tegra_pinconf_reg(pmx, g, param, &bank, ®, &bit, &width); |
| 306 | if (ret < 0) |
| 307 | return ret; |
| 308 | |
| 309 | val = pmx_readl(pmx, bank, reg); |
| 310 | mask = (1 << width) - 1; |
| 311 | arg = (val >> bit) & mask; |
| 312 | |
| 313 | *config = TEGRA_PINCONF_PACK(param, arg); |
| 314 | |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | static int tegra_pinconf_group_set(struct pinctrl_dev *pctldev, |
| 319 | unsigned group, unsigned long config) |
| 320 | { |
| 321 | struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev); |
| 322 | enum tegra_pinconf_param param = TEGRA_PINCONF_UNPACK_PARAM(config); |
| 323 | u16 arg = TEGRA_PINCONF_UNPACK_ARG(config); |
| 324 | const struct tegra_pingroup *g; |
| 325 | int ret; |
| 326 | s8 bank, bit, width; |
| 327 | s16 reg; |
| 328 | u32 val, mask; |
| 329 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 330 | g = &pmx->soc->groups[group]; |
| 331 | |
| 332 | ret = tegra_pinconf_reg(pmx, g, param, &bank, ®, &bit, &width); |
| 333 | if (ret < 0) |
| 334 | return ret; |
| 335 | |
| 336 | val = pmx_readl(pmx, bank, reg); |
| 337 | |
| 338 | /* LOCK can't be cleared */ |
| 339 | if (param == TEGRA_PINCONF_PARAM_LOCK) { |
| 340 | if ((val & BIT(bit)) && !arg) |
| 341 | return -EINVAL; |
| 342 | } |
| 343 | |
| 344 | /* Special-case Boolean values; allow any non-zero as true */ |
| 345 | if (width == 1) |
| 346 | arg = !!arg; |
| 347 | |
| 348 | /* Range-check user-supplied value */ |
| 349 | mask = (1 << width) - 1; |
| 350 | if (arg & ~mask) |
| 351 | return -EINVAL; |
| 352 | |
| 353 | /* Update register */ |
| 354 | val &= ~(mask << bit); |
| 355 | val |= arg << bit; |
| 356 | pmx_writel(pmx, val, bank, reg); |
| 357 | |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | static void tegra_pinconf_dbg_show(struct pinctrl_dev *pctldev, |
| 362 | struct seq_file *s, unsigned offset) |
| 363 | { |
| 364 | } |
| 365 | |
| 366 | static void tegra_pinconf_group_dbg_show(struct pinctrl_dev *pctldev, |
| 367 | struct seq_file *s, unsigned selector) |
| 368 | { |
| 369 | } |
| 370 | |
| 371 | struct pinconf_ops tegra_pinconf_ops = { |
| 372 | .pin_config_get = tegra_pinconf_get, |
| 373 | .pin_config_set = tegra_pinconf_set, |
| 374 | .pin_config_group_get = tegra_pinconf_group_get, |
| 375 | .pin_config_group_set = tegra_pinconf_group_set, |
| 376 | .pin_config_dbg_show = tegra_pinconf_dbg_show, |
| 377 | .pin_config_group_dbg_show = tegra_pinconf_group_dbg_show, |
| 378 | }; |
| 379 | |
| 380 | static struct pinctrl_gpio_range tegra_pinctrl_gpio_range = { |
| 381 | .name = "Tegra GPIOs", |
| 382 | .id = 0, |
| 383 | .base = 0, |
| 384 | }; |
| 385 | |
| 386 | static struct pinctrl_desc tegra_pinctrl_desc = { |
| 387 | .name = DRIVER_NAME, |
| 388 | .pctlops = &tegra_pinctrl_ops, |
| 389 | .pmxops = &tegra_pinmux_ops, |
| 390 | .confops = &tegra_pinconf_ops, |
| 391 | .owner = THIS_MODULE, |
| 392 | }; |
| 393 | |
| 394 | static struct of_device_id tegra_pinctrl_of_match[] __devinitdata = { |
| 395 | #ifdef CONFIG_PINCTRL_TEGRA20 |
| 396 | { |
| 397 | .compatible = "nvidia,tegra20-pinmux-disabled", |
| 398 | .data = tegra20_pinctrl_init, |
| 399 | }, |
| 400 | #endif |
| 401 | #ifdef CONFIG_PINCTRL_TEGRA30 |
| 402 | { |
| 403 | .compatible = "nvidia,tegra30-pinmux-disabled", |
| 404 | .data = tegra30_pinctrl_init, |
| 405 | }, |
| 406 | #endif |
| 407 | {}, |
| 408 | }; |
| 409 | |
| 410 | static int __devinit tegra_pinctrl_probe(struct platform_device *pdev) |
| 411 | { |
| 412 | const struct of_device_id *match; |
| 413 | tegra_pinctrl_soc_initf initf = NULL; |
| 414 | struct tegra_pmx *pmx; |
| 415 | struct resource *res; |
| 416 | int i; |
| 417 | |
| 418 | match = of_match_device(tegra_pinctrl_of_match, &pdev->dev); |
| 419 | if (match) |
| 420 | initf = (tegra_pinctrl_soc_initf)match->data; |
| 421 | #ifdef CONFIG_PINCTRL_TEGRA20 |
| 422 | if (!initf) |
| 423 | initf = tegra20_pinctrl_init; |
| 424 | #endif |
| 425 | if (!initf) { |
| 426 | dev_err(&pdev->dev, |
| 427 | "Could not determine SoC-specific init func\n"); |
| 428 | return -EINVAL; |
| 429 | } |
| 430 | |
| 431 | pmx = devm_kzalloc(&pdev->dev, sizeof(*pmx), GFP_KERNEL); |
| 432 | if (!pmx) { |
| 433 | dev_err(&pdev->dev, "Can't alloc tegra_pmx\n"); |
| 434 | return -ENOMEM; |
| 435 | } |
| 436 | pmx->dev = &pdev->dev; |
| 437 | |
| 438 | (*initf)(&pmx->soc); |
| 439 | |
| 440 | tegra_pinctrl_gpio_range.npins = pmx->soc->ngpios; |
| 441 | tegra_pinctrl_desc.pins = pmx->soc->pins; |
| 442 | tegra_pinctrl_desc.npins = pmx->soc->npins; |
| 443 | |
| 444 | for (i = 0; ; i++) { |
| 445 | res = platform_get_resource(pdev, IORESOURCE_MEM, i); |
| 446 | if (!res) |
| 447 | break; |
| 448 | } |
| 449 | pmx->nbanks = i; |
| 450 | |
| 451 | pmx->regs = devm_kzalloc(&pdev->dev, pmx->nbanks * sizeof(*pmx->regs), |
| 452 | GFP_KERNEL); |
| 453 | if (!pmx->regs) { |
| 454 | dev_err(&pdev->dev, "Can't alloc regs pointer\n"); |
| 455 | return -ENODEV; |
| 456 | } |
| 457 | |
| 458 | for (i = 0; i < pmx->nbanks; i++) { |
| 459 | res = platform_get_resource(pdev, IORESOURCE_MEM, i); |
| 460 | if (!res) { |
| 461 | dev_err(&pdev->dev, "Missing MEM resource\n"); |
| 462 | return -ENODEV; |
| 463 | } |
| 464 | |
| 465 | if (!devm_request_mem_region(&pdev->dev, res->start, |
| 466 | resource_size(res), |
| 467 | dev_name(&pdev->dev))) { |
| 468 | dev_err(&pdev->dev, |
| 469 | "Couldn't request MEM resource %d\n", i); |
| 470 | return -ENODEV; |
| 471 | } |
| 472 | |
| 473 | pmx->regs[i] = devm_ioremap(&pdev->dev, res->start, |
| 474 | resource_size(res)); |
| 475 | if (!pmx->regs[i]) { |
| 476 | dev_err(&pdev->dev, "Couldn't ioremap regs %d\n", i); |
| 477 | return -ENODEV; |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | pmx->pctl = pinctrl_register(&tegra_pinctrl_desc, &pdev->dev, pmx); |
| 482 | if (IS_ERR(pmx->pctl)) { |
| 483 | dev_err(&pdev->dev, "Couldn't register pinctrl driver\n"); |
| 484 | return PTR_ERR(pmx->pctl); |
| 485 | } |
| 486 | |
| 487 | pinctrl_add_gpio_range(pmx->pctl, &tegra_pinctrl_gpio_range); |
| 488 | |
| 489 | platform_set_drvdata(pdev, pmx); |
| 490 | |
| 491 | dev_dbg(&pdev->dev, "Probed Tegra pinctrl driver\n"); |
| 492 | |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | static int __devexit tegra_pinctrl_remove(struct platform_device *pdev) |
| 497 | { |
| 498 | struct tegra_pmx *pmx = platform_get_drvdata(pdev); |
| 499 | |
Stephen Warren | 971dac7 | 2012-02-01 14:04:47 -0700 | [diff] [blame] | 500 | pinctrl_unregister(pmx->pctl); |
| 501 | |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | static struct platform_driver tegra_pinctrl_driver = { |
| 506 | .driver = { |
| 507 | .name = DRIVER_NAME, |
| 508 | .owner = THIS_MODULE, |
| 509 | .of_match_table = tegra_pinctrl_of_match, |
| 510 | }, |
| 511 | .probe = tegra_pinctrl_probe, |
| 512 | .remove = __devexit_p(tegra_pinctrl_remove), |
| 513 | }; |
| 514 | |
| 515 | static int __init tegra_pinctrl_init(void) |
| 516 | { |
| 517 | return platform_driver_register(&tegra_pinctrl_driver); |
| 518 | } |
| 519 | arch_initcall(tegra_pinctrl_init); |
| 520 | |
| 521 | static void __exit tegra_pinctrl_exit(void) |
| 522 | { |
| 523 | platform_driver_unregister(&tegra_pinctrl_driver); |
| 524 | } |
| 525 | module_exit(tegra_pinctrl_exit); |
| 526 | |
| 527 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| 528 | MODULE_DESCRIPTION("NVIDIA Tegra pinctrl driver"); |
| 529 | MODULE_LICENSE("GPL v2"); |
| 530 | MODULE_DEVICE_TABLE(of, tegra_pinctrl_of_match); |