Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2013-2014,2016-2018, The Linux Foundation. All rights reserved. |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | #define pr_fmt(fmt) "%s: " fmt, __func__ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/err.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/regmap.h> |
| 18 | #include <linux/of.h> |
| 19 | #include <linux/of_device.h> |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 20 | #include <linux/notifier.h> |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 21 | #include <linux/qpnp/qpnp-misc.h> |
| 22 | |
| 23 | #define QPNP_MISC_DEV_NAME "qcom,qpnp-misc" |
| 24 | |
| 25 | #define REG_DIG_MAJOR_REV 0x01 |
| 26 | #define REG_SUBTYPE 0x05 |
| 27 | #define REG_PWM_SEL 0x49 |
| 28 | #define REG_GP_DRIVER_EN 0x4C |
| 29 | |
| 30 | #define PWM_SEL_MAX 0x03 |
| 31 | #define GP_DRIVER_EN_BIT BIT(0) |
| 32 | |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 33 | enum twm { |
| 34 | TWM_MODE_1 = 1, |
| 35 | TWM_MODE_2, |
| 36 | TWM_MODE_3, |
| 37 | }; |
| 38 | |
| 39 | enum twm_attrib { |
| 40 | TWM_ENABLE, |
| 41 | TWM_EXIT, |
| 42 | }; |
| 43 | |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 44 | static DEFINE_MUTEX(qpnp_misc_dev_list_mutex); |
| 45 | static LIST_HEAD(qpnp_misc_dev_list); |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 46 | static RAW_NOTIFIER_HEAD(twm_notifier); |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 47 | |
| 48 | struct qpnp_misc_version { |
| 49 | u8 subtype; |
| 50 | u8 dig_major_rev; |
| 51 | }; |
| 52 | |
| 53 | /** |
| 54 | * struct qpnp_misc_dev - holds controller device specific information |
| 55 | * @list: Doubly-linked list parameter linking to other |
| 56 | * qpnp_misc devices. |
| 57 | * @mutex: Mutex lock that is used to ensure mutual |
| 58 | * exclusion between probing and accessing misc |
| 59 | * driver information |
| 60 | * @dev: Device pointer to the misc device |
| 61 | * @regmap: Regmap pointer to the misc device |
| 62 | * @version: struct that holds the subtype and dig_major_rev |
| 63 | * of the chip. |
| 64 | */ |
| 65 | struct qpnp_misc_dev { |
| 66 | struct list_head list; |
| 67 | struct mutex mutex; |
| 68 | struct device *dev; |
| 69 | struct regmap *regmap; |
| 70 | struct qpnp_misc_version version; |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 71 | struct class twm_class; |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 72 | |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 73 | u8 twm_mode; |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 74 | u32 base; |
| 75 | u8 pwm_sel; |
| 76 | bool enable_gp_driver; |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 77 | bool support_twm_config; |
| 78 | bool twm_enable; |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 79 | }; |
| 80 | |
| 81 | static const struct of_device_id qpnp_misc_match_table[] = { |
| 82 | { .compatible = QPNP_MISC_DEV_NAME }, |
| 83 | {} |
| 84 | }; |
| 85 | |
| 86 | enum qpnp_misc_version_name { |
| 87 | INVALID, |
| 88 | PM8941, |
| 89 | PM8226, |
| 90 | PMA8084, |
| 91 | PMDCALIFORNIUM, |
| 92 | }; |
| 93 | |
| 94 | static struct qpnp_misc_version irq_support_version[] = { |
| 95 | {0x00, 0x00}, /* INVALID */ |
| 96 | {0x01, 0x02}, /* PM8941 */ |
| 97 | {0x07, 0x00}, /* PM8226 */ |
| 98 | {0x09, 0x00}, /* PMA8084 */ |
| 99 | {0x16, 0x00}, /* PMDCALIFORNIUM */ |
| 100 | }; |
| 101 | |
| 102 | static int qpnp_write_byte(struct qpnp_misc_dev *mdev, u16 addr, u8 val) |
| 103 | { |
| 104 | int rc; |
| 105 | |
| 106 | rc = regmap_write(mdev->regmap, mdev->base + addr, val); |
| 107 | if (rc) |
| 108 | pr_err("regmap write failed rc=%d\n", rc); |
| 109 | |
| 110 | return rc; |
| 111 | } |
| 112 | |
| 113 | static int qpnp_read_byte(struct qpnp_misc_dev *mdev, u16 addr, u8 *val) |
| 114 | { |
| 115 | unsigned int temp; |
| 116 | int rc; |
| 117 | |
| 118 | rc = regmap_read(mdev->regmap, mdev->base + addr, &temp); |
| 119 | if (rc) { |
| 120 | pr_err("regmap read failed rc=%d\n", rc); |
| 121 | return rc; |
| 122 | } |
| 123 | |
| 124 | *val = (u8)temp; |
| 125 | return rc; |
| 126 | } |
| 127 | |
| 128 | static int get_qpnp_misc_version_name(struct qpnp_misc_dev *dev) |
| 129 | { |
| 130 | int i; |
| 131 | |
| 132 | for (i = 1; i < ARRAY_SIZE(irq_support_version); i++) |
| 133 | if (dev->version.subtype == irq_support_version[i].subtype && |
| 134 | dev->version.dig_major_rev >= |
| 135 | irq_support_version[i].dig_major_rev) |
| 136 | return i; |
| 137 | |
| 138 | return INVALID; |
| 139 | } |
| 140 | |
| 141 | static bool __misc_irqs_available(struct qpnp_misc_dev *dev) |
| 142 | { |
| 143 | int version_name = get_qpnp_misc_version_name(dev); |
| 144 | |
| 145 | if (version_name == INVALID) |
| 146 | return 0; |
| 147 | return 1; |
| 148 | } |
| 149 | |
| 150 | int qpnp_misc_read_reg(struct device_node *node, u16 addr, u8 *val) |
| 151 | { |
| 152 | struct qpnp_misc_dev *mdev = NULL; |
| 153 | struct qpnp_misc_dev *mdev_found = NULL; |
| 154 | int rc; |
Lingutla Chandrasekhar | 5c33845 | 2017-09-14 19:29:18 +0530 | [diff] [blame] | 155 | u8 temp = 0; |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 156 | |
| 157 | if (IS_ERR_OR_NULL(node)) { |
| 158 | pr_err("Invalid device node pointer\n"); |
| 159 | return -EINVAL; |
| 160 | } |
| 161 | |
| 162 | mutex_lock(&qpnp_misc_dev_list_mutex); |
| 163 | list_for_each_entry(mdev, &qpnp_misc_dev_list, list) { |
| 164 | if (mdev->dev->of_node == node) { |
| 165 | mdev_found = mdev; |
| 166 | break; |
| 167 | } |
| 168 | } |
| 169 | mutex_unlock(&qpnp_misc_dev_list_mutex); |
| 170 | |
| 171 | if (!mdev_found) { |
| 172 | /* |
| 173 | * No MISC device was found. This API should only |
| 174 | * be called by drivers which have specified the |
| 175 | * misc phandle in their device tree node. |
| 176 | */ |
| 177 | pr_err("no probed misc device found\n"); |
| 178 | return -EPROBE_DEFER; |
| 179 | } |
| 180 | |
| 181 | rc = qpnp_read_byte(mdev, addr, &temp); |
| 182 | if (rc < 0) { |
| 183 | dev_err(mdev->dev, "Failed to read addr %x, rc=%d\n", addr, rc); |
| 184 | return rc; |
| 185 | } |
| 186 | |
| 187 | *val = temp; |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | int qpnp_misc_irqs_available(struct device *consumer_dev) |
| 192 | { |
| 193 | struct device_node *misc_node = NULL; |
| 194 | struct qpnp_misc_dev *mdev = NULL; |
| 195 | struct qpnp_misc_dev *mdev_found = NULL; |
| 196 | |
| 197 | if (IS_ERR_OR_NULL(consumer_dev)) { |
| 198 | pr_err("Invalid consumer device pointer\n"); |
| 199 | return -EINVAL; |
| 200 | } |
| 201 | |
| 202 | misc_node = of_parse_phandle(consumer_dev->of_node, "qcom,misc-ref", 0); |
| 203 | if (!misc_node) { |
| 204 | pr_debug("Could not find qcom,misc-ref property in %s\n", |
| 205 | consumer_dev->of_node->full_name); |
| 206 | return 0; |
| 207 | } |
| 208 | |
| 209 | mutex_lock(&qpnp_misc_dev_list_mutex); |
| 210 | list_for_each_entry(mdev, &qpnp_misc_dev_list, list) { |
| 211 | if (mdev->dev->of_node == misc_node) { |
| 212 | mdev_found = mdev; |
| 213 | break; |
| 214 | } |
| 215 | } |
| 216 | mutex_unlock(&qpnp_misc_dev_list_mutex); |
| 217 | |
| 218 | if (!mdev_found) { |
| 219 | /* |
| 220 | * No MISC device was found. This API should only |
| 221 | * be called by drivers which have specified the |
| 222 | * misc phandle in their device tree node. |
| 223 | */ |
| 224 | pr_err("no probed misc device found\n"); |
| 225 | return -EPROBE_DEFER; |
| 226 | } |
| 227 | |
| 228 | return __misc_irqs_available(mdev_found); |
| 229 | } |
| 230 | |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 231 | #define MISC_SPARE_1 0x50 |
| 232 | #define MISC_SPARE_2 0x51 |
| 233 | #define ENABLE_TWM_MODE 0x80 |
| 234 | #define DISABLE_TWM_MODE 0x0 |
| 235 | #define TWM_EXIT_BIT BIT(0) |
| 236 | static ssize_t twm_enable_store(struct class *c, |
| 237 | struct class_attribute *attr, |
| 238 | const char *buf, size_t count) |
| 239 | { |
| 240 | struct qpnp_misc_dev *mdev = container_of(c, |
| 241 | struct qpnp_misc_dev, twm_class); |
| 242 | u8 val = 0; |
| 243 | ssize_t rc = 0; |
| 244 | |
| 245 | rc = kstrtou8(buf, 10, &val); |
| 246 | if (rc < 0) |
| 247 | return rc; |
| 248 | |
| 249 | mdev->twm_enable = val ? true : false; |
| 250 | |
| 251 | /* Notify the TWM state */ |
| 252 | raw_notifier_call_chain(&twm_notifier, |
| 253 | mdev->twm_enable ? PMIC_TWM_ENABLE : PMIC_TWM_CLEAR, NULL); |
| 254 | |
| 255 | return count; |
| 256 | } |
| 257 | |
| 258 | static ssize_t twm_enable_show(struct class *c, |
| 259 | struct class_attribute *attr, char *buf) |
| 260 | { |
| 261 | struct qpnp_misc_dev *mdev = container_of(c, |
| 262 | struct qpnp_misc_dev, twm_class); |
| 263 | |
| 264 | return snprintf(buf, PAGE_SIZE, "%d\n", mdev->twm_enable); |
| 265 | } |
| 266 | |
| 267 | static ssize_t twm_exit_show(struct class *c, |
| 268 | struct class_attribute *attr, char *buf) |
| 269 | { |
| 270 | struct qpnp_misc_dev *mdev = container_of(c, |
| 271 | struct qpnp_misc_dev, twm_class); |
| 272 | int rc = 0; |
| 273 | u8 val = 0; |
| 274 | |
| 275 | rc = qpnp_read_byte(mdev, MISC_SPARE_1, &val); |
| 276 | if (rc < 0) { |
| 277 | pr_err("Failed to read TWM enable (misc_spare_1) rc=%d\n", rc); |
| 278 | return rc; |
| 279 | } |
| 280 | |
| 281 | pr_debug("TWM_EXIT (misc_spare_1) register = 0x%02x\n", val); |
| 282 | |
| 283 | return snprintf(buf, PAGE_SIZE, "%d\n", !!(val & TWM_EXIT_BIT)); |
| 284 | } |
| 285 | |
| 286 | static struct class_attribute twm_attributes[] = { |
| 287 | [TWM_ENABLE] = __ATTR(twm_enable, 0644, |
| 288 | twm_enable_show, twm_enable_store), |
| 289 | [TWM_EXIT] = __ATTR(twm_exit, 0644, |
| 290 | twm_exit_show, NULL), |
| 291 | __ATTR_NULL, |
| 292 | }; |
| 293 | |
| 294 | int qpnp_misc_twm_notifier_register(struct notifier_block *nb) |
| 295 | { |
| 296 | return raw_notifier_chain_register(&twm_notifier, nb); |
| 297 | } |
| 298 | EXPORT_SYMBOL(qpnp_misc_twm_notifier_register); |
| 299 | |
| 300 | int qpnp_misc_twm_notifier_unregister(struct notifier_block *nb) |
| 301 | { |
| 302 | return raw_notifier_chain_unregister(&twm_notifier, nb); |
| 303 | } |
| 304 | EXPORT_SYMBOL(qpnp_misc_twm_notifier_unregister); |
| 305 | |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 306 | static int qpnp_misc_dt_init(struct qpnp_misc_dev *mdev) |
| 307 | { |
| 308 | struct device_node *node = mdev->dev->of_node; |
| 309 | u32 val; |
| 310 | int rc; |
| 311 | |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 312 | if (of_property_read_bool(mdev->dev->of_node, |
| 313 | "qcom,support-twm-config")) { |
| 314 | mdev->support_twm_config = true; |
| 315 | mdev->twm_mode = TWM_MODE_3; |
| 316 | rc = of_property_read_u8(mdev->dev->of_node, "qcom,twm-mode", |
| 317 | &mdev->twm_mode); |
| 318 | if (!rc && (mdev->twm_mode < TWM_MODE_1 || |
| 319 | mdev->twm_mode > TWM_MODE_3)) { |
| 320 | pr_err("Invalid TWM mode %d\n", mdev->twm_mode); |
| 321 | return -EINVAL; |
| 322 | } |
| 323 | } |
| 324 | |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 325 | rc = of_property_read_u32(node, "reg", &mdev->base); |
| 326 | if (rc < 0 || !mdev->base) { |
| 327 | dev_err(mdev->dev, "Base address not defined or invalid\n"); |
| 328 | return -EINVAL; |
| 329 | } |
| 330 | |
| 331 | if (!of_property_read_u32(node, "qcom,pwm-sel", &val)) { |
| 332 | if (val > PWM_SEL_MAX) { |
| 333 | dev_err(mdev->dev, "Invalid value for pwm-sel\n"); |
| 334 | return -EINVAL; |
| 335 | } |
| 336 | mdev->pwm_sel = (u8)val; |
| 337 | } |
| 338 | mdev->enable_gp_driver = of_property_read_bool(node, |
| 339 | "qcom,enable-gp-driver"); |
| 340 | |
| 341 | WARN((mdev->pwm_sel > 0 && !mdev->enable_gp_driver), |
| 342 | "Setting PWM source without enabling gp driver\n"); |
| 343 | WARN((mdev->pwm_sel == 0 && mdev->enable_gp_driver), |
| 344 | "Enabling gp driver without setting PWM source\n"); |
| 345 | |
| 346 | return 0; |
| 347 | } |
| 348 | |
| 349 | static int qpnp_misc_config(struct qpnp_misc_dev *mdev) |
| 350 | { |
| 351 | int rc, version_name; |
| 352 | |
| 353 | version_name = get_qpnp_misc_version_name(mdev); |
| 354 | |
| 355 | switch (version_name) { |
| 356 | case PMDCALIFORNIUM: |
| 357 | if (mdev->pwm_sel > 0 && mdev->enable_gp_driver) { |
| 358 | rc = qpnp_write_byte(mdev, REG_PWM_SEL, mdev->pwm_sel); |
| 359 | if (rc < 0) { |
| 360 | dev_err(mdev->dev, |
| 361 | "Failed to write PWM_SEL reg\n"); |
| 362 | return rc; |
| 363 | } |
| 364 | |
| 365 | rc = qpnp_write_byte(mdev, REG_GP_DRIVER_EN, |
| 366 | GP_DRIVER_EN_BIT); |
| 367 | if (rc < 0) { |
| 368 | dev_err(mdev->dev, |
| 369 | "Failed to write GP_DRIVER_EN reg\n"); |
| 370 | return rc; |
| 371 | } |
| 372 | } |
| 373 | break; |
| 374 | default: |
| 375 | break; |
| 376 | } |
| 377 | |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 378 | if (mdev->support_twm_config) { |
| 379 | mdev->twm_class.name = "pmic_twm", |
| 380 | mdev->twm_class.owner = THIS_MODULE, |
| 381 | mdev->twm_class.class_attrs = twm_attributes; |
| 382 | |
| 383 | rc = class_register(&mdev->twm_class); |
| 384 | if (rc < 0) { |
| 385 | pr_err("Failed to register pmic_twm class rc=%d\n", rc); |
| 386 | return rc; |
| 387 | } |
| 388 | } |
| 389 | |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | static int qpnp_misc_probe(struct platform_device *pdev) |
| 394 | { |
| 395 | struct qpnp_misc_dev *mdev = ERR_PTR(-EINVAL); |
| 396 | int rc; |
| 397 | |
| 398 | mdev = devm_kzalloc(&pdev->dev, sizeof(*mdev), GFP_KERNEL); |
| 399 | if (!mdev) |
| 400 | return -ENOMEM; |
| 401 | |
| 402 | mdev->dev = &pdev->dev; |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 403 | dev_set_drvdata(&pdev->dev, mdev); |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 404 | mdev->regmap = dev_get_regmap(mdev->dev->parent, NULL); |
| 405 | if (!mdev->regmap) { |
| 406 | dev_err(mdev->dev, "Parent regmap is unavailable\n"); |
| 407 | return -ENXIO; |
| 408 | } |
| 409 | |
| 410 | rc = qpnp_misc_dt_init(mdev); |
| 411 | if (rc < 0) { |
| 412 | dev_err(mdev->dev, |
| 413 | "Error reading device tree properties, rc=%d\n", rc); |
| 414 | return rc; |
| 415 | } |
| 416 | |
| 417 | |
| 418 | rc = qpnp_read_byte(mdev, REG_SUBTYPE, &mdev->version.subtype); |
| 419 | if (rc < 0) { |
| 420 | dev_err(mdev->dev, "Failed to read subtype, rc=%d\n", rc); |
| 421 | return rc; |
| 422 | } |
| 423 | |
| 424 | rc = qpnp_read_byte(mdev, REG_DIG_MAJOR_REV, |
| 425 | &mdev->version.dig_major_rev); |
| 426 | if (rc < 0) { |
| 427 | dev_err(mdev->dev, "Failed to read dig_major_rev, rc=%d\n", rc); |
| 428 | return rc; |
| 429 | } |
| 430 | |
| 431 | mutex_lock(&qpnp_misc_dev_list_mutex); |
| 432 | list_add_tail(&mdev->list, &qpnp_misc_dev_list); |
| 433 | mutex_unlock(&qpnp_misc_dev_list_mutex); |
| 434 | |
| 435 | rc = qpnp_misc_config(mdev); |
| 436 | if (rc < 0) { |
| 437 | dev_err(mdev->dev, |
| 438 | "Error configuring module registers, rc=%d\n", rc); |
| 439 | return rc; |
| 440 | } |
| 441 | |
| 442 | dev_info(mdev->dev, "probe successful\n"); |
| 443 | return 0; |
| 444 | } |
| 445 | |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 446 | static void qpnp_misc_shutdown(struct platform_device *pdev) |
| 447 | { |
| 448 | struct qpnp_misc_dev *mdev = dev_get_drvdata(&pdev->dev); |
| 449 | int rc; |
| 450 | |
| 451 | if (mdev->support_twm_config) { |
| 452 | rc = qpnp_write_byte(mdev, MISC_SPARE_2, |
| 453 | mdev->twm_enable ? mdev->twm_mode : 0x0); |
| 454 | if (rc < 0) |
| 455 | pr_err("Failed to write MISC_SPARE_2 (twm_mode) val=%d rc=%d\n", |
| 456 | mdev->twm_enable ? mdev->twm_mode : 0x0, rc); |
| 457 | |
| 458 | rc = qpnp_write_byte(mdev, MISC_SPARE_1, |
| 459 | mdev->twm_enable ? ENABLE_TWM_MODE : 0x0); |
| 460 | if (rc < 0) |
| 461 | pr_err("Failed to write MISC_SPARE_1 (twm_state) val=%d rc=%d\n", |
| 462 | mdev->twm_enable ? ENABLE_TWM_MODE : 0x0, rc); |
| 463 | |
| 464 | pr_debug("PMIC configured for TWM-%s MODE=%d\n", |
| 465 | mdev->twm_enable ? "enabled" : "disabled", |
| 466 | mdev->twm_mode); |
| 467 | } |
| 468 | } |
| 469 | |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 470 | static struct platform_driver qpnp_misc_driver = { |
| 471 | .probe = qpnp_misc_probe, |
Anirudh Ghayal | fa0300c | 2018-04-12 21:30:29 +0530 | [diff] [blame] | 472 | .shutdown = qpnp_misc_shutdown, |
Subbaraman Narayanamurthy | e68d90f | 2017-04-03 15:05:21 -0700 | [diff] [blame] | 473 | .driver = { |
| 474 | .name = QPNP_MISC_DEV_NAME, |
| 475 | .owner = THIS_MODULE, |
| 476 | .of_match_table = qpnp_misc_match_table, |
| 477 | }, |
| 478 | }; |
| 479 | |
| 480 | static int __init qpnp_misc_init(void) |
| 481 | { |
| 482 | return platform_driver_register(&qpnp_misc_driver); |
| 483 | } |
| 484 | |
| 485 | static void __exit qpnp_misc_exit(void) |
| 486 | { |
| 487 | return platform_driver_unregister(&qpnp_misc_driver); |
| 488 | } |
| 489 | |
| 490 | subsys_initcall(qpnp_misc_init); |
| 491 | module_exit(qpnp_misc_exit); |
| 492 | |
| 493 | MODULE_DESCRIPTION(QPNP_MISC_DEV_NAME); |
| 494 | MODULE_LICENSE("GPL v2"); |
| 495 | MODULE_ALIAS("platform:" QPNP_MISC_DEV_NAME); |