Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * isa1200.c - Haptic Motor |
| 3 | * |
| 4 | * Copyright (C) 2009 Samsung Electronics |
| 5 | * Kyungmin Park <kyungmin.park@samsung.com> |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 6 | * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 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/module.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/i2c.h> |
| 16 | #include <linux/gpio.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/err.h> |
| 19 | #include <linux/pwm.h> |
| 20 | #include <linux/workqueue.h> |
| 21 | #include <linux/slab.h> |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 22 | #include <linux/regulator/consumer.h> |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 23 | #include <linux/i2c/isa1200.h> |
| 24 | #include "../staging/android/timed_output.h" |
| 25 | |
| 26 | #define ISA1200_HCTRL0 0x30 |
| 27 | #define ISA1200_HCTRL1 0x31 |
| 28 | #define ISA1200_HCTRL5 0x35 |
| 29 | |
| 30 | #define ISA1200_HCTRL0_RESET 0x01 |
| 31 | #define ISA1200_HCTRL1_RESET 0x4B |
| 32 | |
| 33 | #define ISA1200_HCTRL5_VIB_STRT 0xD5 |
| 34 | #define ISA1200_HCTRL5_VIB_STOP 0x6B |
| 35 | |
| 36 | struct isa1200_chip { |
| 37 | struct i2c_client *client; |
| 38 | struct isa1200_platform_data *pdata; |
| 39 | struct pwm_device *pwm; |
| 40 | struct hrtimer timer; |
| 41 | struct timed_output_dev dev; |
| 42 | struct work_struct work; |
| 43 | spinlock_t lock; |
| 44 | unsigned int enable; |
| 45 | unsigned int period_ns; |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 46 | bool is_len_gpio_valid; |
| 47 | struct regulator **regs; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 48 | }; |
| 49 | |
| 50 | static int isa1200_read_reg(struct i2c_client *client, int reg) |
| 51 | { |
| 52 | int ret; |
| 53 | |
| 54 | ret = i2c_smbus_read_byte_data(client, reg); |
| 55 | if (ret < 0) |
| 56 | dev_err(&client->dev, "%s: err %d\n", __func__, ret); |
| 57 | |
| 58 | return ret; |
| 59 | } |
| 60 | |
| 61 | static int isa1200_write_reg(struct i2c_client *client, int reg, u8 value) |
| 62 | { |
| 63 | int ret; |
| 64 | |
| 65 | ret = i2c_smbus_write_byte_data(client, reg, value); |
| 66 | if (ret < 0) |
| 67 | dev_err(&client->dev, "%s: err %d\n", __func__, ret); |
| 68 | |
| 69 | return ret; |
| 70 | } |
| 71 | |
| 72 | static void isa1200_vib_set(struct isa1200_chip *haptic, int enable) |
| 73 | { |
| 74 | int rc = 0; |
| 75 | |
| 76 | if (enable) { |
| 77 | if (haptic->pdata->mode_ctrl == PWM_INPUT_MODE) { |
| 78 | int period_us = haptic->period_ns / 1000; |
| 79 | rc = pwm_config(haptic->pwm, |
| 80 | (period_us * haptic->pdata->duty) / 100, |
| 81 | period_us); |
| 82 | if (rc < 0) |
| 83 | pr_err("%s: pwm_config fail\n", __func__); |
| 84 | rc = pwm_enable(haptic->pwm); |
| 85 | if (rc < 0) |
| 86 | pr_err("%s: pwm_enable fail\n", __func__); |
| 87 | } else if (haptic->pdata->mode_ctrl == PWM_GEN_MODE) { |
| 88 | rc = isa1200_write_reg(haptic->client, |
| 89 | ISA1200_HCTRL5, |
| 90 | ISA1200_HCTRL5_VIB_STRT); |
| 91 | if (rc < 0) |
| 92 | pr_err("%s: start vibartion fail\n", __func__); |
| 93 | } |
| 94 | } else { |
| 95 | if (haptic->pdata->mode_ctrl == PWM_INPUT_MODE) |
| 96 | pwm_disable(haptic->pwm); |
| 97 | else if (haptic->pdata->mode_ctrl == PWM_GEN_MODE) { |
| 98 | rc = isa1200_write_reg(haptic->client, |
| 99 | ISA1200_HCTRL5, |
| 100 | ISA1200_HCTRL5_VIB_STOP); |
| 101 | if (rc < 0) |
| 102 | pr_err("%s: stop vibartion fail\n", __func__); |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | static void isa1200_chip_work(struct work_struct *work) |
| 108 | { |
| 109 | struct isa1200_chip *haptic; |
| 110 | |
| 111 | haptic = container_of(work, struct isa1200_chip, work); |
| 112 | isa1200_vib_set(haptic, haptic->enable); |
| 113 | } |
| 114 | |
| 115 | static void isa1200_chip_enable(struct timed_output_dev *dev, int value) |
| 116 | { |
| 117 | struct isa1200_chip *haptic = container_of(dev, struct isa1200_chip, |
| 118 | dev); |
| 119 | unsigned long flags; |
| 120 | |
| 121 | spin_lock_irqsave(&haptic->lock, flags); |
| 122 | hrtimer_cancel(&haptic->timer); |
| 123 | if (value == 0) |
| 124 | haptic->enable = 0; |
| 125 | else { |
| 126 | value = (value > haptic->pdata->max_timeout ? |
| 127 | haptic->pdata->max_timeout : value); |
| 128 | haptic->enable = 1; |
| 129 | hrtimer_start(&haptic->timer, |
| 130 | ktime_set(value / 1000, (value % 1000) * 1000000), |
| 131 | HRTIMER_MODE_REL); |
| 132 | } |
| 133 | spin_unlock_irqrestore(&haptic->lock, flags); |
| 134 | schedule_work(&haptic->work); |
| 135 | } |
| 136 | |
| 137 | static int isa1200_chip_get_time(struct timed_output_dev *dev) |
| 138 | { |
| 139 | struct isa1200_chip *haptic = container_of(dev, struct isa1200_chip, |
| 140 | dev); |
| 141 | |
| 142 | if (hrtimer_active(&haptic->timer)) { |
| 143 | ktime_t r = hrtimer_get_remaining(&haptic->timer); |
| 144 | struct timeval t = ktime_to_timeval(r); |
| 145 | return t.tv_sec * 1000 + t.tv_usec / 1000; |
| 146 | } else |
| 147 | return 0; |
| 148 | } |
| 149 | |
| 150 | static enum hrtimer_restart isa1200_vib_timer_func(struct hrtimer *timer) |
| 151 | { |
| 152 | struct isa1200_chip *haptic = container_of(timer, struct isa1200_chip, |
| 153 | timer); |
| 154 | haptic->enable = 0; |
| 155 | schedule_work(&haptic->work); |
| 156 | |
| 157 | return HRTIMER_NORESTART; |
| 158 | } |
| 159 | |
| 160 | static void dump_isa1200_reg(char *str, struct i2c_client *client) |
| 161 | { |
| 162 | pr_debug("%s reg0x%x=0x%x, reg0x%x=0x%x, reg0x%x=0x%x\n", str, |
| 163 | ISA1200_HCTRL0, isa1200_read_reg(client, ISA1200_HCTRL0), |
| 164 | ISA1200_HCTRL1, isa1200_read_reg(client, ISA1200_HCTRL1), |
| 165 | ISA1200_HCTRL5, isa1200_read_reg(client, ISA1200_HCTRL5)); |
| 166 | } |
| 167 | |
| 168 | static int isa1200_setup(struct i2c_client *client) |
| 169 | { |
| 170 | struct isa1200_chip *haptic = i2c_get_clientdata(client); |
| 171 | int value, temp, rc; |
| 172 | |
| 173 | gpio_set_value_cansleep(haptic->pdata->hap_en_gpio, 0); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 174 | if (haptic->is_len_gpio_valid == true) |
| 175 | gpio_set_value_cansleep(haptic->pdata->hap_len_gpio, 0); |
| 176 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 177 | udelay(250); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 178 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 179 | gpio_set_value_cansleep(haptic->pdata->hap_en_gpio, 1); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 180 | if (haptic->is_len_gpio_valid == true) |
| 181 | gpio_set_value_cansleep(haptic->pdata->hap_len_gpio, 1); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 182 | |
| 183 | value = (haptic->pdata->smart_en << 3) | |
| 184 | (haptic->pdata->is_erm << 5) | |
| 185 | (haptic->pdata->ext_clk_en << 7); |
| 186 | |
| 187 | rc = isa1200_write_reg(client, ISA1200_HCTRL1, value); |
| 188 | if (rc < 0) { |
| 189 | pr_err("%s: i2c write failure\n", __func__); |
| 190 | return rc; |
| 191 | } |
| 192 | |
| 193 | if (haptic->pdata->mode_ctrl == PWM_GEN_MODE) { |
| 194 | temp = haptic->pdata->pwm_fd.pwm_div; |
| 195 | if (temp < 128 || temp > 1024 || temp % 128) { |
| 196 | pr_err("%s: Invalid divider\n", __func__); |
| 197 | goto reset_hctrl1; |
| 198 | } |
| 199 | value = ((temp >> 7) - 1); |
| 200 | } else if (haptic->pdata->mode_ctrl == PWM_INPUT_MODE) { |
| 201 | temp = haptic->pdata->pwm_fd.pwm_freq; |
| 202 | if (temp < 22400 || temp > 172600 || temp % 22400) { |
| 203 | pr_err("%s: Invalid frequency\n", __func__); |
| 204 | goto reset_hctrl1; |
| 205 | } |
| 206 | value = ((temp / 22400) - 1); |
| 207 | haptic->period_ns = NSEC_PER_SEC / temp; |
| 208 | } |
| 209 | |
| 210 | value |= (haptic->pdata->mode_ctrl << 3) | |
| 211 | (haptic->pdata->overdrive_high << 5) | |
| 212 | (haptic->pdata->overdrive_en << 5) | |
| 213 | (haptic->pdata->chip_en << 7); |
| 214 | |
| 215 | rc = isa1200_write_reg(client, ISA1200_HCTRL0, value); |
| 216 | if (rc < 0) { |
| 217 | pr_err("%s: i2c write failure\n", __func__); |
| 218 | goto reset_hctrl1; |
| 219 | } |
| 220 | |
| 221 | dump_isa1200_reg("new:", client); |
| 222 | return 0; |
| 223 | |
| 224 | reset_hctrl1: |
| 225 | i2c_smbus_write_byte_data(client, ISA1200_HCTRL1, |
| 226 | ISA1200_HCTRL1_RESET); |
| 227 | return rc; |
| 228 | } |
| 229 | |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 230 | static int isa1200_reg_power(struct isa1200_chip *haptic, bool on) |
| 231 | { |
| 232 | const struct isa1200_regulator *reg_info = |
| 233 | haptic->pdata->regulator_info; |
| 234 | u8 i, num_reg = haptic->pdata->num_regulators; |
| 235 | int rc; |
| 236 | |
| 237 | for (i = 0; i < num_reg; i++) { |
| 238 | rc = regulator_set_optimum_mode(haptic->regs[i], |
| 239 | on ? reg_info[i].load_uA : 0); |
| 240 | if (rc < 0) { |
| 241 | pr_err("%s: regulator_set_optimum_mode failed(%d)\n", |
| 242 | __func__, rc); |
| 243 | goto regs_fail; |
| 244 | } |
| 245 | |
| 246 | rc = on ? regulator_enable(haptic->regs[i]) : |
| 247 | regulator_disable(haptic->regs[i]); |
| 248 | if (rc < 0) { |
| 249 | pr_err("%s: regulator %sable fail %d\n", __func__, |
| 250 | on ? "en" : "dis", rc); |
| 251 | regulator_set_optimum_mode(haptic->regs[i], |
| 252 | !on ? reg_info[i].load_uA : 0); |
| 253 | goto regs_fail; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | return 0; |
| 258 | |
| 259 | regs_fail: |
| 260 | while (i--) { |
| 261 | regulator_set_optimum_mode(haptic->regs[i], |
| 262 | !on ? reg_info[i].load_uA : 0); |
| 263 | !on ? regulator_enable(haptic->regs[i]) : |
| 264 | regulator_disable(haptic->regs[i]); |
| 265 | } |
| 266 | return rc; |
| 267 | } |
| 268 | |
| 269 | static int isa1200_reg_setup(struct isa1200_chip *haptic, bool on) |
| 270 | { |
| 271 | const struct isa1200_regulator *reg_info = |
| 272 | haptic->pdata->regulator_info; |
| 273 | u8 i, num_reg = haptic->pdata->num_regulators; |
| 274 | int rc = 0; |
| 275 | |
| 276 | /* put regulators */ |
| 277 | if (on == false) { |
| 278 | i = num_reg; |
| 279 | goto put_regs; |
| 280 | } |
| 281 | |
| 282 | haptic->regs = kzalloc(num_reg * sizeof(struct regulator *), |
| 283 | GFP_KERNEL); |
| 284 | if (!haptic->regs) { |
| 285 | pr_err("unable to allocate memory\n"); |
| 286 | return -ENOMEM; |
| 287 | } |
| 288 | |
| 289 | for (i = 0; i < num_reg; i++) { |
| 290 | haptic->regs[i] = regulator_get(&haptic->client->dev, |
| 291 | reg_info[i].name); |
| 292 | if (IS_ERR(haptic->regs[i])) { |
| 293 | rc = PTR_ERR(haptic->regs[i]); |
| 294 | pr_err("%s:regulator get failed(%d)\n", __func__, rc); |
| 295 | goto put_regs; |
| 296 | } |
| 297 | |
| 298 | if (regulator_count_voltages(haptic->regs[i]) > 0) { |
| 299 | rc = regulator_set_voltage(haptic->regs[i], |
| 300 | reg_info[i].min_uV, reg_info[i].max_uV); |
| 301 | if (rc) { |
| 302 | pr_err("%s: regulator_set_voltage failed(%d)\n", |
| 303 | __func__, rc); |
| 304 | regulator_put(haptic->regs[i]); |
| 305 | goto put_regs; |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | return rc; |
| 311 | |
| 312 | put_regs: |
| 313 | while (i--) { |
| 314 | if (regulator_count_voltages(haptic->regs[i]) > 0) |
| 315 | regulator_set_voltage(haptic->regs[i], 0, |
| 316 | reg_info[i].max_uV); |
| 317 | regulator_put(haptic->regs[i]); |
| 318 | } |
| 319 | kfree(haptic->regs); |
| 320 | return rc; |
| 321 | } |
| 322 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 323 | static int __devinit isa1200_probe(struct i2c_client *client, |
| 324 | const struct i2c_device_id *id) |
| 325 | { |
| 326 | struct isa1200_chip *haptic; |
| 327 | struct isa1200_platform_data *pdata; |
| 328 | int ret; |
| 329 | |
| 330 | if (!i2c_check_functionality(client->adapter, |
| 331 | I2C_FUNC_SMBUS_BYTE_DATA)) { |
| 332 | dev_err(&client->dev, "%s: no support for i2c read/write" |
| 333 | "byte data\n", __func__); |
| 334 | return -EIO; |
| 335 | } |
| 336 | |
| 337 | pdata = client->dev.platform_data; |
| 338 | if (!pdata) { |
| 339 | dev_err(&client->dev, "%s: no platform data\n", __func__); |
| 340 | return -EINVAL; |
| 341 | } |
| 342 | |
| 343 | if (pdata->dev_setup) { |
| 344 | ret = pdata->dev_setup(true); |
| 345 | if (ret < 0) { |
| 346 | dev_err(&client->dev, "dev setup failed\n"); |
| 347 | return -EINVAL; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | haptic = kzalloc(sizeof(struct isa1200_chip), GFP_KERNEL); |
| 352 | if (!haptic) { |
| 353 | ret = -ENOMEM; |
| 354 | goto mem_alloc_fail; |
| 355 | } |
| 356 | haptic->client = client; |
| 357 | haptic->enable = 0; |
| 358 | haptic->pdata = pdata; |
| 359 | |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 360 | if (pdata->regulator_info) { |
| 361 | ret = isa1200_reg_setup(haptic, true); |
| 362 | if (ret) { |
| 363 | dev_err(&client->dev, "%s: regulator setup failed\n", |
| 364 | __func__); |
| 365 | goto reg_setup_fail; |
| 366 | } |
| 367 | |
| 368 | ret = isa1200_reg_power(haptic, true); |
| 369 | if (ret) { |
| 370 | dev_err(&client->dev, "%s: regulator power failed\n", |
| 371 | __func__); |
| 372 | goto reg_pwr_fail; |
| 373 | } |
| 374 | } |
| 375 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 376 | if (pdata->power_on) { |
| 377 | ret = pdata->power_on(1); |
| 378 | if (ret) { |
| 379 | dev_err(&client->dev, "%s: power-up failed\n", |
| 380 | __func__); |
| 381 | goto pwr_up_fail; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | spin_lock_init(&haptic->lock); |
| 386 | INIT_WORK(&haptic->work, isa1200_chip_work); |
| 387 | |
| 388 | hrtimer_init(&haptic->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
| 389 | haptic->timer.function = isa1200_vib_timer_func; |
| 390 | |
| 391 | /*register with timed output class*/ |
| 392 | haptic->dev.name = pdata->name; |
| 393 | haptic->dev.get_time = isa1200_chip_get_time; |
| 394 | haptic->dev.enable = isa1200_chip_enable; |
| 395 | ret = timed_output_dev_register(&haptic->dev); |
| 396 | if (ret < 0) |
| 397 | goto timed_reg_fail; |
| 398 | |
| 399 | i2c_set_clientdata(client, haptic); |
| 400 | |
| 401 | ret = gpio_is_valid(pdata->hap_en_gpio); |
| 402 | if (ret) { |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 403 | ret = gpio_request(pdata->hap_en_gpio, "haptic_en_gpio"); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 404 | if (ret) { |
| 405 | dev_err(&client->dev, "%s: gpio %d request failed\n", |
| 406 | __func__, pdata->hap_en_gpio); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 407 | goto hen_gpio_fail; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 408 | } |
| 409 | } else { |
| 410 | dev_err(&client->dev, "%s: Invalid gpio %d\n", __func__, |
| 411 | pdata->hap_en_gpio); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 412 | goto hen_gpio_fail; |
| 413 | } |
| 414 | |
| 415 | haptic->is_len_gpio_valid = true; |
| 416 | ret = gpio_is_valid(haptic->pdata->hap_len_gpio); |
| 417 | if (ret) { |
| 418 | ret = gpio_request(pdata->hap_len_gpio, |
| 419 | "haptic_ldo_gpio"); |
| 420 | if (ret) { |
| 421 | dev_err(&client->dev, |
| 422 | "%s: gpio %d request failed\n", |
| 423 | __func__, pdata->hap_len_gpio); |
| 424 | goto len_gpio_fail; |
| 425 | } |
| 426 | } else { |
| 427 | dev_err(&client->dev, "%s: gpio is not used/Invalid %d\n", |
| 428 | __func__, pdata->hap_len_gpio); |
| 429 | haptic->is_len_gpio_valid = false; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | ret = isa1200_setup(client); |
| 433 | if (ret) { |
| 434 | dev_err(&client->dev, "%s: setup fail %d\n", __func__, ret); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 435 | goto setup_fail; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | if (haptic->pdata->mode_ctrl == PWM_INPUT_MODE) { |
| 439 | haptic->pwm = pwm_request(pdata->pwm_ch_id, id->name); |
| 440 | if (IS_ERR(haptic->pwm)) { |
| 441 | dev_err(&client->dev, "%s: pwm request failed\n", |
| 442 | __func__); |
| 443 | ret = PTR_ERR(haptic->pwm); |
| 444 | goto reset_hctrl0; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | printk(KERN_INFO "%s: %s registered\n", __func__, id->name); |
| 449 | return 0; |
| 450 | |
| 451 | reset_hctrl0: |
| 452 | i2c_smbus_write_byte_data(client, ISA1200_HCTRL0, |
| 453 | ISA1200_HCTRL0_RESET); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 454 | setup_fail: |
| 455 | if (haptic->is_len_gpio_valid == true) |
| 456 | gpio_free(pdata->hap_len_gpio); |
| 457 | len_gpio_fail: |
| 458 | gpio_free(pdata->hap_en_gpio); |
| 459 | hen_gpio_fail: |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 460 | timed_output_dev_unregister(&haptic->dev); |
| 461 | timed_reg_fail: |
| 462 | if (pdata->power_on) |
| 463 | pdata->power_on(0); |
| 464 | pwr_up_fail: |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 465 | if (pdata->regulator_info) |
| 466 | isa1200_reg_power(haptic, false); |
| 467 | reg_pwr_fail: |
| 468 | if (pdata->regulator_info) |
| 469 | isa1200_reg_setup(haptic, false); |
| 470 | reg_setup_fail: |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 471 | kfree(haptic); |
| 472 | mem_alloc_fail: |
| 473 | if (pdata->dev_setup) |
| 474 | pdata->dev_setup(false); |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | static int __devexit isa1200_remove(struct i2c_client *client) |
| 479 | { |
| 480 | struct isa1200_chip *haptic = i2c_get_clientdata(client); |
| 481 | |
| 482 | hrtimer_cancel(&haptic->timer); |
| 483 | cancel_work_sync(&haptic->work); |
| 484 | |
| 485 | /* turn-off current vibration */ |
| 486 | isa1200_vib_set(haptic, 0); |
| 487 | |
| 488 | if (haptic->pdata->mode_ctrl == PWM_INPUT_MODE) |
| 489 | pwm_free(haptic->pwm); |
| 490 | |
| 491 | timed_output_dev_unregister(&haptic->dev); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 492 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 493 | gpio_free(haptic->pdata->hap_en_gpio); |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 494 | if (haptic->is_len_gpio_valid == true) |
| 495 | gpio_free(haptic->pdata->hap_len_gpio); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 496 | |
| 497 | /* reset hardware registers */ |
| 498 | i2c_smbus_write_byte_data(client, ISA1200_HCTRL0, |
| 499 | ISA1200_HCTRL0_RESET); |
| 500 | i2c_smbus_write_byte_data(client, ISA1200_HCTRL1, |
| 501 | ISA1200_HCTRL1_RESET); |
| 502 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 503 | |
| 504 | /* power-off the chip */ |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 505 | if (haptic->pdata->regulator_info) { |
| 506 | isa1200_reg_power(haptic, false); |
| 507 | isa1200_reg_setup(haptic, false); |
| 508 | } |
| 509 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 510 | if (haptic->pdata->power_on) |
| 511 | haptic->pdata->power_on(0); |
| 512 | |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 513 | if (haptic->pdata->dev_setup) |
| 514 | haptic->pdata->dev_setup(false); |
| 515 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 516 | kfree(haptic); |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | #ifdef CONFIG_PM |
| 521 | static int isa1200_suspend(struct i2c_client *client, pm_message_t mesg) |
| 522 | { |
| 523 | struct isa1200_chip *haptic = i2c_get_clientdata(client); |
| 524 | int ret; |
| 525 | |
| 526 | hrtimer_cancel(&haptic->timer); |
| 527 | cancel_work_sync(&haptic->work); |
| 528 | /* turn-off current vibration */ |
| 529 | isa1200_vib_set(haptic, 0); |
| 530 | |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 531 | gpio_set_value_cansleep(haptic->pdata->hap_en_gpio, 0); |
| 532 | if (haptic->is_len_gpio_valid == true) |
| 533 | gpio_set_value_cansleep(haptic->pdata->hap_len_gpio, 0); |
| 534 | |
| 535 | if (haptic->pdata->regulator_info) |
| 536 | isa1200_reg_power(haptic, false); |
| 537 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 538 | if (haptic->pdata->power_on) { |
| 539 | ret = haptic->pdata->power_on(0); |
| 540 | if (ret) { |
| 541 | dev_err(&client->dev, "power-down failed\n"); |
| 542 | return ret; |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | static int isa1200_resume(struct i2c_client *client) |
| 550 | { |
| 551 | struct isa1200_chip *haptic = i2c_get_clientdata(client); |
| 552 | int ret; |
| 553 | |
Mohan Pallaka | 73787fa | 2011-09-09 15:14:20 +0530 | [diff] [blame] | 554 | if (haptic->pdata->regulator_info) |
| 555 | isa1200_reg_power(haptic, true); |
| 556 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 557 | if (haptic->pdata->power_on) { |
| 558 | ret = haptic->pdata->power_on(1); |
| 559 | if (ret) { |
| 560 | dev_err(&client->dev, "power-up failed\n"); |
| 561 | return ret; |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | isa1200_setup(client); |
| 566 | return 0; |
| 567 | } |
| 568 | #else |
| 569 | #define isa1200_suspend NULL |
| 570 | #define isa1200_resume NULL |
| 571 | #endif |
| 572 | |
| 573 | static const struct i2c_device_id isa1200_id[] = { |
| 574 | { "isa1200_1", 0 }, |
| 575 | { }, |
| 576 | }; |
| 577 | MODULE_DEVICE_TABLE(i2c, isa1200_id); |
| 578 | |
| 579 | static struct i2c_driver isa1200_driver = { |
| 580 | .driver = { |
| 581 | .name = "isa1200", |
| 582 | }, |
| 583 | .probe = isa1200_probe, |
| 584 | .remove = __devexit_p(isa1200_remove), |
| 585 | .suspend = isa1200_suspend, |
| 586 | .resume = isa1200_resume, |
| 587 | .id_table = isa1200_id, |
| 588 | }; |
| 589 | |
| 590 | static int __init isa1200_init(void) |
| 591 | { |
| 592 | return i2c_add_driver(&isa1200_driver); |
| 593 | } |
| 594 | |
| 595 | static void __exit isa1200_exit(void) |
| 596 | { |
| 597 | i2c_del_driver(&isa1200_driver); |
| 598 | } |
| 599 | |
| 600 | module_init(isa1200_init); |
| 601 | module_exit(isa1200_exit); |
| 602 | |
| 603 | MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>"); |
| 604 | MODULE_DESCRIPTION("ISA1200 Haptic Motor driver"); |
| 605 | MODULE_LICENSE("GPL"); |