Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved. |
| 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 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/module.h> |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 15 | #include <linux/of_gpio.h> |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 16 | #include <linux/slab.h> |
| 17 | #include <linux/mfd/core.h> |
| 18 | #include <linux/mfd/wcd9xxx/wcd9xxx-slimslave.h> |
| 19 | #include <linux/mfd/wcd9xxx/core.h> |
| 20 | #include <linux/mfd/wcd9xxx/pdata.h> |
| 21 | #include <linux/mfd/wcd9xxx/wcd9xxx_registers.h> |
| 22 | |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/gpio.h> |
| 25 | #include <linux/debugfs.h> |
| 26 | #include <linux/regulator/consumer.h> |
| 27 | #include <linux/i2c.h> |
| 28 | #include <sound/soc.h> |
| 29 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 30 | #define WCD9XXX_REGISTER_START_OFFSET 0x800 |
| 31 | #define WCD9XXX_SLIM_RW_MAX_TRIES 3 |
Joonwoo Park | 3c5b2df | 2012-08-28 15:36:55 -0700 | [diff] [blame] | 32 | #define SLIMBUS_PRESENT_TIMEOUT 100 |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 33 | |
| 34 | #define MAX_WCD9XXX_DEVICE 4 |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame] | 35 | #define TABLA_I2C_MODE 0x03 |
| 36 | #define SITAR_I2C_MODE 0x01 |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 37 | |
| 38 | struct wcd9xxx_i2c { |
| 39 | struct i2c_client *client; |
| 40 | struct i2c_msg xfer_msg[2]; |
| 41 | struct mutex xfer_lock; |
| 42 | int mod_id; |
| 43 | }; |
| 44 | |
| 45 | struct wcd9xxx_i2c wcd9xxx_modules[MAX_WCD9XXX_DEVICE]; |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 46 | static int wcd9xxx_intf = -1; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 47 | |
| 48 | static int wcd9xxx_read(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 49 | int bytes, void *dest, bool interface_reg) |
| 50 | { |
| 51 | int ret; |
| 52 | u8 *buf = dest; |
| 53 | |
| 54 | if (bytes <= 0) { |
| 55 | dev_err(wcd9xxx->dev, "Invalid byte read length %d\n", bytes); |
| 56 | return -EINVAL; |
| 57 | } |
| 58 | |
| 59 | ret = wcd9xxx->read_dev(wcd9xxx, reg, bytes, dest, interface_reg); |
| 60 | if (ret < 0) { |
| 61 | dev_err(wcd9xxx->dev, "Codec read failed\n"); |
| 62 | return ret; |
| 63 | } else |
Kiran Kandi | 1e6371d | 2012-03-29 11:48:57 -0700 | [diff] [blame] | 64 | dev_dbg(wcd9xxx->dev, "Read 0x%02x from 0x%x\n", |
| 65 | *buf, reg); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | int wcd9xxx_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg) |
| 70 | { |
| 71 | u8 val; |
| 72 | int ret; |
| 73 | |
| 74 | mutex_lock(&wcd9xxx->io_lock); |
| 75 | ret = wcd9xxx_read(wcd9xxx, reg, 1, &val, false); |
| 76 | mutex_unlock(&wcd9xxx->io_lock); |
| 77 | |
| 78 | if (ret < 0) |
| 79 | return ret; |
| 80 | else |
| 81 | return val; |
| 82 | } |
| 83 | EXPORT_SYMBOL_GPL(wcd9xxx_reg_read); |
| 84 | |
| 85 | static int wcd9xxx_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 86 | int bytes, void *src, bool interface_reg) |
| 87 | { |
| 88 | u8 *buf = src; |
| 89 | |
| 90 | if (bytes <= 0) { |
| 91 | pr_err("%s: Error, invalid write length\n", __func__); |
| 92 | return -EINVAL; |
| 93 | } |
| 94 | |
Kiran Kandi | 1e6371d | 2012-03-29 11:48:57 -0700 | [diff] [blame] | 95 | dev_dbg(wcd9xxx->dev, "Write %02x to 0x%x\n", |
| 96 | *buf, reg); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 97 | |
| 98 | return wcd9xxx->write_dev(wcd9xxx, reg, bytes, src, interface_reg); |
| 99 | } |
| 100 | |
| 101 | int wcd9xxx_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 102 | u8 val) |
| 103 | { |
| 104 | int ret; |
| 105 | |
| 106 | mutex_lock(&wcd9xxx->io_lock); |
| 107 | ret = wcd9xxx_write(wcd9xxx, reg, 1, &val, false); |
| 108 | mutex_unlock(&wcd9xxx->io_lock); |
| 109 | |
| 110 | return ret; |
| 111 | } |
| 112 | EXPORT_SYMBOL_GPL(wcd9xxx_reg_write); |
| 113 | |
| 114 | static u8 wcd9xxx_pgd_la; |
| 115 | static u8 wcd9xxx_inf_la; |
| 116 | |
| 117 | int wcd9xxx_interface_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg) |
| 118 | { |
| 119 | u8 val; |
| 120 | int ret; |
| 121 | |
| 122 | mutex_lock(&wcd9xxx->io_lock); |
| 123 | ret = wcd9xxx_read(wcd9xxx, reg, 1, &val, true); |
| 124 | mutex_unlock(&wcd9xxx->io_lock); |
| 125 | |
| 126 | if (ret < 0) |
| 127 | return ret; |
| 128 | else |
| 129 | return val; |
| 130 | } |
| 131 | EXPORT_SYMBOL_GPL(wcd9xxx_interface_reg_read); |
| 132 | |
| 133 | int wcd9xxx_interface_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 134 | u8 val) |
| 135 | { |
| 136 | int ret; |
| 137 | |
| 138 | mutex_lock(&wcd9xxx->io_lock); |
| 139 | ret = wcd9xxx_write(wcd9xxx, reg, 1, &val, true); |
| 140 | mutex_unlock(&wcd9xxx->io_lock); |
| 141 | |
| 142 | return ret; |
| 143 | } |
| 144 | EXPORT_SYMBOL_GPL(wcd9xxx_interface_reg_write); |
| 145 | |
| 146 | int wcd9xxx_bulk_read(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 147 | int count, u8 *buf) |
| 148 | { |
| 149 | int ret; |
| 150 | |
| 151 | mutex_lock(&wcd9xxx->io_lock); |
| 152 | |
| 153 | ret = wcd9xxx_read(wcd9xxx, reg, count, buf, false); |
| 154 | |
| 155 | mutex_unlock(&wcd9xxx->io_lock); |
| 156 | |
| 157 | return ret; |
| 158 | } |
| 159 | EXPORT_SYMBOL_GPL(wcd9xxx_bulk_read); |
| 160 | |
| 161 | int wcd9xxx_bulk_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 162 | int count, u8 *buf) |
| 163 | { |
| 164 | int ret; |
| 165 | |
| 166 | mutex_lock(&wcd9xxx->io_lock); |
| 167 | |
| 168 | ret = wcd9xxx_write(wcd9xxx, reg, count, buf, false); |
| 169 | |
| 170 | mutex_unlock(&wcd9xxx->io_lock); |
| 171 | |
| 172 | return ret; |
| 173 | } |
| 174 | EXPORT_SYMBOL_GPL(wcd9xxx_bulk_write); |
| 175 | |
| 176 | static int wcd9xxx_slim_read_device(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 177 | int bytes, void *dest, bool interface) |
| 178 | { |
| 179 | int ret; |
| 180 | struct slim_ele_access msg; |
| 181 | int slim_read_tries = WCD9XXX_SLIM_RW_MAX_TRIES; |
| 182 | msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg; |
| 183 | msg.num_bytes = bytes; |
| 184 | msg.comp = NULL; |
| 185 | |
| 186 | while (1) { |
| 187 | mutex_lock(&wcd9xxx->xfer_lock); |
| 188 | ret = slim_request_val_element(interface ? |
| 189 | wcd9xxx->slim_slave : wcd9xxx->slim, |
| 190 | &msg, dest, bytes); |
| 191 | mutex_unlock(&wcd9xxx->xfer_lock); |
| 192 | if (likely(ret == 0) || (--slim_read_tries == 0)) |
| 193 | break; |
| 194 | usleep_range(5000, 5000); |
| 195 | } |
| 196 | |
| 197 | if (ret) |
| 198 | pr_err("%s: Error, Codec read failed (%d)\n", __func__, ret); |
| 199 | |
| 200 | return ret; |
| 201 | } |
| 202 | /* Interface specifies whether the write is to the interface or general |
| 203 | * registers. |
| 204 | */ |
| 205 | static int wcd9xxx_slim_write_device(struct wcd9xxx *wcd9xxx, |
| 206 | unsigned short reg, int bytes, void *src, bool interface) |
| 207 | { |
| 208 | int ret; |
| 209 | struct slim_ele_access msg; |
| 210 | int slim_write_tries = WCD9XXX_SLIM_RW_MAX_TRIES; |
| 211 | msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg; |
| 212 | msg.num_bytes = bytes; |
| 213 | msg.comp = NULL; |
| 214 | |
| 215 | while (1) { |
| 216 | mutex_lock(&wcd9xxx->xfer_lock); |
| 217 | ret = slim_change_val_element(interface ? |
| 218 | wcd9xxx->slim_slave : wcd9xxx->slim, |
| 219 | &msg, src, bytes); |
| 220 | mutex_unlock(&wcd9xxx->xfer_lock); |
| 221 | if (likely(ret == 0) || (--slim_write_tries == 0)) |
| 222 | break; |
| 223 | usleep_range(5000, 5000); |
| 224 | } |
| 225 | |
| 226 | if (ret) |
| 227 | pr_err("%s: Error, Codec write failed (%d)\n", __func__, ret); |
| 228 | |
| 229 | return ret; |
| 230 | } |
| 231 | |
| 232 | static struct mfd_cell tabla1x_devs[] = { |
| 233 | { |
| 234 | .name = "tabla1x_codec", |
| 235 | }, |
| 236 | }; |
| 237 | |
| 238 | static struct mfd_cell tabla_devs[] = { |
| 239 | { |
| 240 | .name = "tabla_codec", |
| 241 | }, |
| 242 | }; |
| 243 | |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 244 | static struct mfd_cell sitar_devs[] = { |
| 245 | { |
| 246 | .name = "sitar_codec", |
| 247 | }, |
| 248 | }; |
| 249 | |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 250 | static struct mfd_cell taiko_devs[] = { |
| 251 | { |
| 252 | .name = "taiko_codec", |
| 253 | }, |
| 254 | }; |
| 255 | |
Venkat Sudhir | ee6c500 | 2012-09-06 11:27:32 -0700 | [diff] [blame^] | 256 | static struct wcd9xx_codec_type { |
| 257 | u8 byte[4]; |
| 258 | struct mfd_cell *dev; |
| 259 | int size; |
| 260 | } wcd9xxx_codecs[] = { |
| 261 | {{0x2, 0x0, 0x0, 0x1}, tabla_devs, ARRAY_SIZE(tabla_devs)}, |
| 262 | {{0x1, 0x0, 0x0, 0x1}, tabla1x_devs, ARRAY_SIZE(tabla1x_devs)}, |
| 263 | {{0x0, 0x0, 0x2, 0x1}, taiko_devs, ARRAY_SIZE(taiko_devs)}, |
| 264 | {{0x0, 0x0, 0x0, 0x1}, sitar_devs, ARRAY_SIZE(sitar_devs)}, |
| 265 | {{0x1, 0x0, 0x1, 0x1}, sitar_devs, ARRAY_SIZE(sitar_devs)}, |
| 266 | }; |
| 267 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 268 | static void wcd9xxx_bring_up(struct wcd9xxx *wcd9xxx) |
| 269 | { |
| 270 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x4); |
| 271 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_CDC_CTL, 0); |
| 272 | usleep_range(5000, 5000); |
| 273 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_CDC_CTL, 3); |
| 274 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 3); |
| 275 | } |
| 276 | |
| 277 | static void wcd9xxx_bring_down(struct wcd9xxx *wcd9xxx) |
| 278 | { |
| 279 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x7); |
| 280 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x6); |
| 281 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0xe); |
| 282 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x8); |
| 283 | } |
| 284 | |
| 285 | static int wcd9xxx_reset(struct wcd9xxx *wcd9xxx) |
| 286 | { |
| 287 | int ret; |
| 288 | |
| 289 | if (wcd9xxx->reset_gpio) { |
| 290 | ret = gpio_request(wcd9xxx->reset_gpio, "CDC_RESET"); |
| 291 | if (ret) { |
| 292 | pr_err("%s: Failed to request gpio %d\n", __func__, |
| 293 | wcd9xxx->reset_gpio); |
| 294 | wcd9xxx->reset_gpio = 0; |
| 295 | return ret; |
| 296 | } |
| 297 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 298 | gpio_direction_output(wcd9xxx->reset_gpio, 0); |
| 299 | msleep(20); |
| 300 | gpio_direction_output(wcd9xxx->reset_gpio, 1); |
| 301 | msleep(20); |
| 302 | } |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | static void wcd9xxx_free_reset(struct wcd9xxx *wcd9xxx) |
| 307 | { |
| 308 | if (wcd9xxx->reset_gpio) { |
| 309 | gpio_free(wcd9xxx->reset_gpio); |
| 310 | wcd9xxx->reset_gpio = 0; |
| 311 | } |
| 312 | } |
Venkat Sudhir | ee6c500 | 2012-09-06 11:27:32 -0700 | [diff] [blame^] | 313 | static int wcd9xxx_check_codec_type(struct wcd9xxx *wcd9xxx, |
| 314 | struct mfd_cell **wcd9xxx_dev, |
| 315 | int *wcd9xxx_dev_size) |
| 316 | { |
| 317 | struct wcd9xx_codec_type *cdc = wcd9xxx_codecs; |
| 318 | int index; |
| 319 | int ret; |
| 320 | index = WCD9XXX_A_CHIP_ID_BYTE_0; |
| 321 | while (index <= WCD9XXX_A_CHIP_ID_BYTE_3) { |
| 322 | ret = wcd9xxx_reg_read(wcd9xxx, index); |
| 323 | if (ret < 0) |
| 324 | goto exit; |
| 325 | wcd9xxx->idbyte[index-WCD9XXX_A_CHIP_ID_BYTE_0] = (u8)ret; |
| 326 | pr_debug("%s: wcd9xx read = %x, byte = %x\n", __func__, ret, |
| 327 | index); |
| 328 | index++; |
| 329 | } |
| 330 | |
| 331 | /* Read codec version */ |
| 332 | ret = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_VERSION); |
| 333 | if (ret < 0) |
| 334 | goto exit; |
| 335 | wcd9xxx->version = (u8)ret & 0x1F; |
| 336 | |
| 337 | while (cdc < (cdc + ARRAY_SIZE(wcd9xxx_codecs)) && cdc != NULL) { |
| 338 | if ((cdc->byte[0] == wcd9xxx->idbyte[0]) && |
| 339 | (cdc->byte[1] == wcd9xxx->idbyte[1]) && |
| 340 | (cdc->byte[2] == wcd9xxx->idbyte[2]) && |
| 341 | (cdc->byte[3] == wcd9xxx->idbyte[3])) { |
| 342 | pr_info("%s: codec is %s", __func__, cdc->dev->name); |
| 343 | *wcd9xxx_dev = cdc->dev; |
| 344 | *wcd9xxx_dev_size = cdc->size; |
| 345 | break; |
| 346 | } |
| 347 | cdc++; |
| 348 | } |
| 349 | if (*wcd9xxx_dev == NULL || *wcd9xxx_dev_size == 0) |
| 350 | ret = -ENODEV; |
| 351 | pr_info("%s: Read codec idbytes & version\n" |
| 352 | "byte_0[%08x] byte_1[%08x] byte_2[%08x]\n" |
| 353 | " byte_3[%08x] version = %x\n", __func__, |
| 354 | wcd9xxx->idbyte[0], wcd9xxx->idbyte[1], |
| 355 | wcd9xxx->idbyte[2], wcd9xxx->idbyte[3], |
| 356 | wcd9xxx->version); |
| 357 | exit: |
| 358 | return ret; |
| 359 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 360 | |
| 361 | static int wcd9xxx_device_init(struct wcd9xxx *wcd9xxx, int irq) |
| 362 | { |
| 363 | int ret; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 364 | struct mfd_cell *wcd9xxx_dev = NULL; |
| 365 | int wcd9xxx_dev_size = 0; |
| 366 | |
| 367 | mutex_init(&wcd9xxx->io_lock); |
| 368 | mutex_init(&wcd9xxx->xfer_lock); |
| 369 | |
| 370 | mutex_init(&wcd9xxx->pm_lock); |
| 371 | wcd9xxx->wlock_holders = 0; |
| 372 | wcd9xxx->pm_state = WCD9XXX_PM_SLEEPABLE; |
| 373 | init_waitqueue_head(&wcd9xxx->pm_wq); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 374 | pm_qos_add_request(&wcd9xxx->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
| 375 | PM_QOS_DEFAULT_VALUE); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 376 | |
| 377 | dev_set_drvdata(wcd9xxx->dev, wcd9xxx); |
| 378 | |
| 379 | wcd9xxx_bring_up(wcd9xxx); |
| 380 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 381 | if (wcd9xxx->irq != -1) { |
| 382 | ret = wcd9xxx_irq_init(wcd9xxx); |
| 383 | if (ret) { |
| 384 | pr_err("IRQ initialization failed\n"); |
| 385 | goto err; |
| 386 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 387 | } |
Venkat Sudhir | ee6c500 | 2012-09-06 11:27:32 -0700 | [diff] [blame^] | 388 | ret = wcd9xxx_check_codec_type(wcd9xxx, &wcd9xxx_dev, |
| 389 | &wcd9xxx_dev_size); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 390 | |
Venkat Sudhir | ee6c500 | 2012-09-06 11:27:32 -0700 | [diff] [blame^] | 391 | if (ret < 0) |
| 392 | goto err_irq; |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 393 | ret = mfd_add_devices(wcd9xxx->dev, -1, wcd9xxx_dev, wcd9xxx_dev_size, |
| 394 | NULL, 0); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 395 | if (ret != 0) { |
| 396 | dev_err(wcd9xxx->dev, "Failed to add children: %d\n", ret); |
| 397 | goto err_irq; |
| 398 | } |
| 399 | return ret; |
| 400 | err_irq: |
| 401 | wcd9xxx_irq_exit(wcd9xxx); |
| 402 | err: |
| 403 | wcd9xxx_bring_down(wcd9xxx); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 404 | pm_qos_remove_request(&wcd9xxx->pm_qos_req); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 405 | mutex_destroy(&wcd9xxx->pm_lock); |
| 406 | mutex_destroy(&wcd9xxx->io_lock); |
| 407 | mutex_destroy(&wcd9xxx->xfer_lock); |
| 408 | return ret; |
| 409 | } |
| 410 | |
| 411 | static void wcd9xxx_device_exit(struct wcd9xxx *wcd9xxx) |
| 412 | { |
| 413 | wcd9xxx_irq_exit(wcd9xxx); |
| 414 | wcd9xxx_bring_down(wcd9xxx); |
| 415 | wcd9xxx_free_reset(wcd9xxx); |
| 416 | mutex_destroy(&wcd9xxx->pm_lock); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 417 | pm_qos_remove_request(&wcd9xxx->pm_qos_req); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 418 | mutex_destroy(&wcd9xxx->io_lock); |
| 419 | mutex_destroy(&wcd9xxx->xfer_lock); |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 420 | if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS) |
| 421 | slim_remove_device(wcd9xxx->slim_slave); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 422 | kfree(wcd9xxx); |
| 423 | } |
| 424 | |
| 425 | |
| 426 | #ifdef CONFIG_DEBUG_FS |
| 427 | struct wcd9xxx *debugCodec; |
| 428 | |
| 429 | static struct dentry *debugfs_wcd9xxx_dent; |
| 430 | static struct dentry *debugfs_peek; |
| 431 | static struct dentry *debugfs_poke; |
| 432 | |
| 433 | static unsigned char read_data; |
| 434 | |
| 435 | static int codec_debug_open(struct inode *inode, struct file *file) |
| 436 | { |
| 437 | file->private_data = inode->i_private; |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | static int get_parameters(char *buf, long int *param1, int num_of_par) |
| 442 | { |
| 443 | char *token; |
| 444 | int base, cnt; |
| 445 | |
| 446 | token = strsep(&buf, " "); |
| 447 | |
| 448 | for (cnt = 0; cnt < num_of_par; cnt++) { |
| 449 | if (token != NULL) { |
| 450 | if ((token[1] == 'x') || (token[1] == 'X')) |
| 451 | base = 16; |
| 452 | else |
| 453 | base = 10; |
| 454 | |
| 455 | if (strict_strtoul(token, base, ¶m1[cnt]) != 0) |
| 456 | return -EINVAL; |
| 457 | |
| 458 | token = strsep(&buf, " "); |
| 459 | } else |
| 460 | return -EINVAL; |
| 461 | } |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static ssize_t codec_debug_read(struct file *file, char __user *ubuf, |
| 466 | size_t count, loff_t *ppos) |
| 467 | { |
| 468 | char lbuf[8]; |
| 469 | |
| 470 | snprintf(lbuf, sizeof(lbuf), "0x%x\n", read_data); |
| 471 | return simple_read_from_buffer(ubuf, count, ppos, lbuf, |
| 472 | strnlen(lbuf, 7)); |
| 473 | } |
| 474 | |
| 475 | |
| 476 | static ssize_t codec_debug_write(struct file *filp, |
| 477 | const char __user *ubuf, size_t cnt, loff_t *ppos) |
| 478 | { |
| 479 | char *access_str = filp->private_data; |
| 480 | char lbuf[32]; |
| 481 | int rc; |
| 482 | long int param[5]; |
| 483 | |
| 484 | if (cnt > sizeof(lbuf) - 1) |
| 485 | return -EINVAL; |
| 486 | |
| 487 | rc = copy_from_user(lbuf, ubuf, cnt); |
| 488 | if (rc) |
| 489 | return -EFAULT; |
| 490 | |
| 491 | lbuf[cnt] = '\0'; |
| 492 | |
| 493 | if (!strncmp(access_str, "poke", 6)) { |
| 494 | /* write */ |
| 495 | rc = get_parameters(lbuf, param, 2); |
| 496 | if ((param[0] <= 0x3FF) && (param[1] <= 0xFF) && |
| 497 | (rc == 0)) |
| 498 | wcd9xxx_interface_reg_write(debugCodec, param[0], |
| 499 | param[1]); |
| 500 | else |
| 501 | rc = -EINVAL; |
| 502 | } else if (!strncmp(access_str, "peek", 6)) { |
| 503 | /* read */ |
| 504 | rc = get_parameters(lbuf, param, 1); |
| 505 | if ((param[0] <= 0x3FF) && (rc == 0)) |
| 506 | read_data = wcd9xxx_interface_reg_read(debugCodec, |
| 507 | param[0]); |
| 508 | else |
| 509 | rc = -EINVAL; |
| 510 | } |
| 511 | |
| 512 | if (rc == 0) |
| 513 | rc = cnt; |
| 514 | else |
| 515 | pr_err("%s: rc = %d\n", __func__, rc); |
| 516 | |
| 517 | return rc; |
| 518 | } |
| 519 | |
| 520 | static const struct file_operations codec_debug_ops = { |
| 521 | .open = codec_debug_open, |
| 522 | .write = codec_debug_write, |
| 523 | .read = codec_debug_read |
| 524 | }; |
| 525 | #endif |
| 526 | |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 527 | static int wcd9xxx_enable_supplies(struct wcd9xxx *wcd9xxx, |
| 528 | struct wcd9xxx_pdata *pdata) |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 529 | { |
| 530 | int ret; |
| 531 | int i; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 532 | wcd9xxx->supplies = kzalloc(sizeof(struct regulator_bulk_data) * |
| 533 | ARRAY_SIZE(pdata->regulator), |
| 534 | GFP_KERNEL); |
| 535 | if (!wcd9xxx->supplies) { |
| 536 | ret = -ENOMEM; |
| 537 | goto err; |
| 538 | } |
| 539 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 540 | wcd9xxx->num_of_supplies = 0; |
| 541 | for (i = 0; i < ARRAY_SIZE(pdata->regulator); i++) { |
| 542 | if (pdata->regulator[i].name) { |
| 543 | wcd9xxx->supplies[i].supply = pdata->regulator[i].name; |
| 544 | wcd9xxx->num_of_supplies++; |
| 545 | } |
| 546 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 547 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 548 | ret = regulator_bulk_get(wcd9xxx->dev, wcd9xxx->num_of_supplies, |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 549 | wcd9xxx->supplies); |
| 550 | if (ret != 0) { |
| 551 | dev_err(wcd9xxx->dev, "Failed to get supplies: err = %d\n", |
| 552 | ret); |
| 553 | goto err_supplies; |
| 554 | } |
| 555 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 556 | for (i = 0; i < wcd9xxx->num_of_supplies; i++) { |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 557 | ret = regulator_set_voltage(wcd9xxx->supplies[i].consumer, |
| 558 | pdata->regulator[i].min_uV, pdata->regulator[i].max_uV); |
| 559 | if (ret) { |
| 560 | pr_err("%s: Setting regulator voltage failed for " |
| 561 | "regulator %s err = %d\n", __func__, |
| 562 | wcd9xxx->supplies[i].supply, ret); |
| 563 | goto err_get; |
| 564 | } |
| 565 | |
| 566 | ret = regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, |
| 567 | pdata->regulator[i].optimum_uA); |
| 568 | if (ret < 0) { |
| 569 | pr_err("%s: Setting regulator optimum mode failed for " |
| 570 | "regulator %s err = %d\n", __func__, |
| 571 | wcd9xxx->supplies[i].supply, ret); |
| 572 | goto err_get; |
| 573 | } |
| 574 | } |
| 575 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 576 | ret = regulator_bulk_enable(wcd9xxx->num_of_supplies, |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 577 | wcd9xxx->supplies); |
| 578 | if (ret != 0) { |
| 579 | dev_err(wcd9xxx->dev, "Failed to enable supplies: err = %d\n", |
| 580 | ret); |
| 581 | goto err_configure; |
| 582 | } |
| 583 | return ret; |
| 584 | |
| 585 | err_configure: |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 586 | for (i = 0; i < wcd9xxx->num_of_supplies; i++) { |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 587 | regulator_set_voltage(wcd9xxx->supplies[i].consumer, 0, |
| 588 | pdata->regulator[i].max_uV); |
| 589 | regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, 0); |
| 590 | } |
| 591 | err_get: |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 592 | regulator_bulk_free(wcd9xxx->num_of_supplies, wcd9xxx->supplies); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 593 | err_supplies: |
| 594 | kfree(wcd9xxx->supplies); |
| 595 | err: |
| 596 | return ret; |
| 597 | } |
| 598 | |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 599 | static void wcd9xxx_disable_supplies(struct wcd9xxx *wcd9xxx, |
| 600 | struct wcd9xxx_pdata *pdata) |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 601 | { |
| 602 | int i; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 603 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 604 | regulator_bulk_disable(wcd9xxx->num_of_supplies, |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 605 | wcd9xxx->supplies); |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 606 | for (i = 0; i < wcd9xxx->num_of_supplies; i++) { |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 607 | regulator_set_voltage(wcd9xxx->supplies[i].consumer, 0, |
| 608 | pdata->regulator[i].max_uV); |
| 609 | regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, 0); |
| 610 | } |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 611 | regulator_bulk_free(wcd9xxx->num_of_supplies, wcd9xxx->supplies); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 612 | kfree(wcd9xxx->supplies); |
| 613 | } |
| 614 | |
| 615 | int wcd9xxx_get_intf_type(void) |
| 616 | { |
| 617 | return wcd9xxx_intf; |
| 618 | } |
| 619 | EXPORT_SYMBOL_GPL(wcd9xxx_get_intf_type); |
| 620 | |
| 621 | struct wcd9xxx_i2c *get_i2c_wcd9xxx_device_info(u16 reg) |
| 622 | { |
| 623 | u16 mask = 0x0f00; |
| 624 | int value = 0; |
| 625 | struct wcd9xxx_i2c *wcd9xxx = NULL; |
| 626 | value = ((reg & mask) >> 8) & 0x000f; |
| 627 | switch (value) { |
| 628 | case 0: |
| 629 | wcd9xxx = &wcd9xxx_modules[0]; |
| 630 | break; |
| 631 | case 1: |
| 632 | wcd9xxx = &wcd9xxx_modules[1]; |
| 633 | break; |
| 634 | case 2: |
| 635 | wcd9xxx = &wcd9xxx_modules[2]; |
| 636 | break; |
| 637 | case 3: |
| 638 | wcd9xxx = &wcd9xxx_modules[3]; |
| 639 | break; |
| 640 | default: |
| 641 | break; |
| 642 | } |
| 643 | return wcd9xxx; |
| 644 | } |
| 645 | |
| 646 | int wcd9xxx_i2c_write_device(u16 reg, u8 *value, |
| 647 | u32 bytes) |
| 648 | { |
| 649 | |
| 650 | struct i2c_msg *msg; |
| 651 | int ret = 0; |
| 652 | u8 reg_addr = 0; |
| 653 | u8 data[bytes + 1]; |
| 654 | struct wcd9xxx_i2c *wcd9xxx; |
| 655 | |
| 656 | wcd9xxx = get_i2c_wcd9xxx_device_info(reg); |
| 657 | if (wcd9xxx == NULL || wcd9xxx->client == NULL) { |
| 658 | pr_err("failed to get device info\n"); |
| 659 | return -ENODEV; |
| 660 | } |
| 661 | reg_addr = (u8)reg; |
| 662 | msg = &wcd9xxx->xfer_msg[0]; |
| 663 | msg->addr = wcd9xxx->client->addr; |
| 664 | msg->len = bytes + 1; |
| 665 | msg->flags = 0; |
| 666 | data[0] = reg; |
| 667 | data[1] = *value; |
| 668 | msg->buf = data; |
| 669 | ret = i2c_transfer(wcd9xxx->client->adapter, wcd9xxx->xfer_msg, 1); |
| 670 | /* Try again if the write fails */ |
| 671 | if (ret != 1) { |
| 672 | ret = i2c_transfer(wcd9xxx->client->adapter, |
| 673 | wcd9xxx->xfer_msg, 1); |
| 674 | if (ret != 1) { |
| 675 | pr_err("failed to write the device\n"); |
| 676 | return ret; |
| 677 | } |
| 678 | } |
| 679 | pr_debug("write sucess register = %x val = %x\n", reg, data[1]); |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | |
| 684 | int wcd9xxx_i2c_read_device(unsigned short reg, |
| 685 | int bytes, unsigned char *dest) |
| 686 | { |
| 687 | struct i2c_msg *msg; |
| 688 | int ret = 0; |
| 689 | u8 reg_addr = 0; |
| 690 | struct wcd9xxx_i2c *wcd9xxx; |
| 691 | u8 i = 0; |
| 692 | |
| 693 | wcd9xxx = get_i2c_wcd9xxx_device_info(reg); |
| 694 | if (wcd9xxx == NULL || wcd9xxx->client == NULL) { |
| 695 | pr_err("failed to get device info\n"); |
| 696 | return -ENODEV; |
| 697 | } |
| 698 | for (i = 0; i < bytes; i++) { |
| 699 | reg_addr = (u8)reg++; |
| 700 | msg = &wcd9xxx->xfer_msg[0]; |
| 701 | msg->addr = wcd9xxx->client->addr; |
| 702 | msg->len = 1; |
| 703 | msg->flags = 0; |
| 704 | msg->buf = ®_addr; |
| 705 | |
| 706 | msg = &wcd9xxx->xfer_msg[1]; |
| 707 | msg->addr = wcd9xxx->client->addr; |
| 708 | msg->len = 1; |
| 709 | msg->flags = I2C_M_RD; |
| 710 | msg->buf = dest++; |
| 711 | ret = i2c_transfer(wcd9xxx->client->adapter, |
| 712 | wcd9xxx->xfer_msg, 2); |
| 713 | |
| 714 | /* Try again if read fails first time */ |
| 715 | if (ret != 2) { |
| 716 | ret = i2c_transfer(wcd9xxx->client->adapter, |
| 717 | wcd9xxx->xfer_msg, 2); |
| 718 | if (ret != 2) { |
| 719 | pr_err("failed to read wcd9xxx register\n"); |
| 720 | return ret; |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | int wcd9xxx_i2c_read(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 728 | int bytes, void *dest, bool interface_reg) |
| 729 | { |
| 730 | return wcd9xxx_i2c_read_device(reg, bytes, dest); |
| 731 | } |
| 732 | |
| 733 | int wcd9xxx_i2c_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 734 | int bytes, void *src, bool interface_reg) |
| 735 | { |
| 736 | return wcd9xxx_i2c_write_device(reg, src, bytes); |
| 737 | } |
| 738 | |
| 739 | static int __devinit wcd9xxx_i2c_probe(struct i2c_client *client, |
| 740 | const struct i2c_device_id *id) |
| 741 | { |
| 742 | struct wcd9xxx *wcd9xxx; |
Venkat Sudhir | cbd522c | 2012-07-13 09:46:29 -0700 | [diff] [blame] | 743 | struct wcd9xxx_pdata *pdata; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 744 | int val = 0; |
| 745 | int ret = 0; |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame] | 746 | int i2c_mode = 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 747 | static int device_id; |
| 748 | |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame] | 749 | pr_info("%s\n", __func__); |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 750 | if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS) { |
| 751 | pr_info("tabla card is already detected in slimbus mode\n"); |
| 752 | return -ENODEV; |
| 753 | } |
Venkat Sudhir | cbd522c | 2012-07-13 09:46:29 -0700 | [diff] [blame] | 754 | pdata = client->dev.platform_data; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 755 | if (device_id > 0) { |
| 756 | wcd9xxx_modules[device_id++].client = client; |
| 757 | pr_info("probe for other slaves devices of tabla\n"); |
| 758 | return ret; |
| 759 | } |
| 760 | |
| 761 | wcd9xxx = kzalloc(sizeof(struct wcd9xxx), GFP_KERNEL); |
| 762 | if (wcd9xxx == NULL) { |
| 763 | pr_err("%s: error, allocation failed\n", __func__); |
| 764 | ret = -ENOMEM; |
| 765 | goto fail; |
| 766 | } |
| 767 | |
| 768 | if (!pdata) { |
| 769 | dev_dbg(&client->dev, "no platform data?\n"); |
| 770 | ret = -EINVAL; |
| 771 | goto fail; |
| 772 | } |
| 773 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { |
| 774 | dev_dbg(&client->dev, "can't talk I2C?\n"); |
| 775 | ret = -EIO; |
| 776 | goto fail; |
| 777 | } |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 778 | dev_set_drvdata(&client->dev, wcd9xxx); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 779 | wcd9xxx->dev = &client->dev; |
| 780 | wcd9xxx->reset_gpio = pdata->reset_gpio; |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 781 | ret = wcd9xxx_enable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 782 | if (ret) { |
| 783 | pr_err("%s: Fail to enable Codec supplies\n", __func__); |
| 784 | goto err_codec; |
| 785 | } |
| 786 | |
| 787 | usleep_range(5, 5); |
| 788 | ret = wcd9xxx_reset(wcd9xxx); |
| 789 | if (ret) { |
| 790 | pr_err("%s: Resetting Codec failed\n", __func__); |
| 791 | goto err_supplies; |
| 792 | } |
| 793 | wcd9xxx_modules[device_id++].client = client; |
| 794 | |
| 795 | wcd9xxx->read_dev = wcd9xxx_i2c_read; |
| 796 | wcd9xxx->write_dev = wcd9xxx_i2c_write; |
| 797 | wcd9xxx->irq = pdata->irq; |
| 798 | wcd9xxx->irq_base = pdata->irq_base; |
| 799 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 800 | ret = wcd9xxx_device_init(wcd9xxx, wcd9xxx->irq); |
| 801 | if (ret) { |
| 802 | pr_err("%s: error, initializing device failed\n", __func__); |
| 803 | goto err_device_init; |
| 804 | } |
Asish Bhattacharya | 6dd4cb5 | 2012-07-05 19:47:42 +0530 | [diff] [blame] | 805 | |
Venkat Sudhir | ee6c500 | 2012-09-06 11:27:32 -0700 | [diff] [blame^] | 806 | if ((wcd9xxx->idbyte[0] == 0x2) || (wcd9xxx->idbyte[0] == 0x1)) |
Asish Bhattacharya | 6dd4cb5 | 2012-07-05 19:47:42 +0530 | [diff] [blame] | 807 | i2c_mode = TABLA_I2C_MODE; |
Venkat Sudhir | ee6c500 | 2012-09-06 11:27:32 -0700 | [diff] [blame^] | 808 | else if (wcd9xxx->idbyte[0] == 0x0) |
Asish Bhattacharya | 6dd4cb5 | 2012-07-05 19:47:42 +0530 | [diff] [blame] | 809 | i2c_mode = SITAR_I2C_MODE; |
| 810 | |
| 811 | ret = wcd9xxx_read(wcd9xxx, WCD9XXX_A_CHIP_STATUS, 1, &val, 0); |
| 812 | |
| 813 | if ((ret < 0) || (val != i2c_mode)) |
| 814 | pr_err("failed to read the wcd9xxx status ret = %d\n", ret); |
| 815 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 816 | wcd9xxx_intf = WCD9XXX_INTERFACE_TYPE_I2C; |
| 817 | |
| 818 | return ret; |
| 819 | err_device_init: |
| 820 | wcd9xxx_free_reset(wcd9xxx); |
| 821 | err_supplies: |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 822 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 823 | err_codec: |
| 824 | kfree(wcd9xxx); |
| 825 | fail: |
| 826 | return ret; |
| 827 | } |
| 828 | |
| 829 | static int __devexit wcd9xxx_i2c_remove(struct i2c_client *client) |
| 830 | { |
| 831 | struct wcd9xxx *wcd9xxx; |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 832 | struct wcd9xxx_pdata *pdata = client->dev.platform_data; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 833 | pr_debug("exit\n"); |
| 834 | wcd9xxx = dev_get_drvdata(&client->dev); |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 835 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 836 | wcd9xxx_device_exit(wcd9xxx); |
| 837 | return 0; |
| 838 | } |
| 839 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 840 | #define CODEC_DT_MAX_PROP_SIZE 40 |
| 841 | static int wcd9xxx_dt_parse_vreg_info(struct device *dev, |
| 842 | struct wcd9xxx_regulator *vreg, const char *vreg_name) |
| 843 | { |
| 844 | int len, ret = 0; |
| 845 | const __be32 *prop; |
| 846 | char prop_name[CODEC_DT_MAX_PROP_SIZE]; |
| 847 | struct device_node *regnode = NULL; |
| 848 | u32 prop_val; |
| 849 | |
| 850 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, "%s-supply", |
| 851 | vreg_name); |
| 852 | regnode = of_parse_phandle(dev->of_node, prop_name, 0); |
| 853 | |
| 854 | if (!regnode) { |
| 855 | dev_err(dev, "Looking up %s property in node %s failed", |
| 856 | prop_name, dev->of_node->full_name); |
| 857 | return -ENODEV; |
| 858 | } |
| 859 | vreg->name = vreg_name; |
| 860 | |
| 861 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 862 | "qcom,%s-voltage", vreg_name); |
| 863 | prop = of_get_property(dev->of_node, prop_name, &len); |
| 864 | |
| 865 | if (!prop || (len != (2 * sizeof(__be32)))) { |
| 866 | dev_err(dev, "%s %s property\n", |
| 867 | prop ? "invalid format" : "no", prop_name); |
| 868 | return -ENODEV; |
| 869 | } else { |
| 870 | vreg->min_uV = be32_to_cpup(&prop[0]); |
| 871 | vreg->max_uV = be32_to_cpup(&prop[1]); |
| 872 | } |
| 873 | |
| 874 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 875 | "qcom,%s-current", vreg_name); |
| 876 | |
| 877 | ret = of_property_read_u32(dev->of_node, prop_name, &prop_val); |
| 878 | if (ret) { |
| 879 | dev_err(dev, "Looking up %s property in node %s failed", |
| 880 | prop_name, dev->of_node->full_name); |
| 881 | return -ENODEV; |
| 882 | } |
| 883 | vreg->optimum_uA = prop_val; |
| 884 | |
| 885 | dev_info(dev, "%s: vol=[%d %d]uV, curr=[%d]uA\n", vreg->name, |
| 886 | vreg->min_uV, vreg->max_uV, vreg->optimum_uA); |
| 887 | return 0; |
| 888 | } |
| 889 | |
| 890 | static int wcd9xxx_dt_parse_micbias_info(struct device *dev, |
| 891 | struct wcd9xxx_micbias_setting *micbias) |
| 892 | { |
| 893 | int ret = 0; |
| 894 | char prop_name[CODEC_DT_MAX_PROP_SIZE]; |
| 895 | u32 prop_val; |
| 896 | |
| 897 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 898 | "qcom,cdc-micbias-ldoh-v"); |
| 899 | ret = of_property_read_u32(dev->of_node, prop_name, &prop_val); |
| 900 | if (ret) { |
| 901 | dev_err(dev, "Looking up %s property in node %s failed", |
| 902 | prop_name, dev->of_node->full_name); |
| 903 | return -ENODEV; |
| 904 | } |
| 905 | micbias->ldoh_v = (u8)prop_val; |
| 906 | |
| 907 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 908 | "qcom,cdc-micbias-cfilt1-mv"); |
| 909 | ret = of_property_read_u32(dev->of_node, prop_name, |
| 910 | &micbias->cfilt1_mv); |
| 911 | if (ret) { |
| 912 | dev_err(dev, "Looking up %s property in node %s failed", |
| 913 | prop_name, dev->of_node->full_name); |
| 914 | return -ENODEV; |
| 915 | } |
| 916 | |
| 917 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 918 | "qcom,cdc-micbias-cfilt2-mv"); |
| 919 | ret = of_property_read_u32(dev->of_node, prop_name, |
| 920 | &micbias->cfilt2_mv); |
| 921 | if (ret) { |
| 922 | dev_err(dev, "Looking up %s property in node %s failed", |
| 923 | prop_name, dev->of_node->full_name); |
| 924 | return -ENODEV; |
| 925 | } |
| 926 | |
| 927 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 928 | "qcom,cdc-micbias-cfilt3-mv"); |
| 929 | ret = of_property_read_u32(dev->of_node, prop_name, |
| 930 | &micbias->cfilt3_mv); |
| 931 | if (ret) { |
| 932 | dev_err(dev, "Looking up %s property in node %s failed", |
| 933 | prop_name, dev->of_node->full_name); |
| 934 | return -ENODEV; |
| 935 | } |
| 936 | |
| 937 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 938 | "qcom,cdc-micbias1-cfilt-sel"); |
| 939 | ret = of_property_read_u32(dev->of_node, prop_name, &prop_val); |
| 940 | if (ret) { |
| 941 | dev_err(dev, "Looking up %s property in node %s failed", |
| 942 | prop_name, dev->of_node->full_name); |
| 943 | return -ENODEV; |
| 944 | } |
| 945 | micbias->bias1_cfilt_sel = (u8)prop_val; |
| 946 | |
| 947 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 948 | "qcom,cdc-micbias2-cfilt-sel"); |
| 949 | ret = of_property_read_u32(dev->of_node, prop_name, &prop_val); |
| 950 | if (ret) { |
| 951 | dev_err(dev, "Looking up %s property in node %s failed", |
| 952 | prop_name, dev->of_node->full_name); |
| 953 | return -ENODEV; |
| 954 | } |
| 955 | micbias->bias2_cfilt_sel = (u8)prop_val; |
| 956 | |
| 957 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 958 | "qcom,cdc-micbias3-cfilt-sel"); |
| 959 | ret = of_property_read_u32(dev->of_node, prop_name, &prop_val); |
| 960 | if (ret) { |
| 961 | dev_err(dev, "Looking up %s property in node %s failed", |
| 962 | prop_name, dev->of_node->full_name); |
| 963 | return -ENODEV; |
| 964 | } |
| 965 | micbias->bias3_cfilt_sel = (u8)prop_val; |
| 966 | |
| 967 | snprintf(prop_name, CODEC_DT_MAX_PROP_SIZE, |
| 968 | "qcom,cdc-micbias4-cfilt-sel"); |
| 969 | ret = of_property_read_u32(dev->of_node, prop_name, &prop_val); |
| 970 | if (ret) { |
| 971 | dev_err(dev, "Looking up %s property in node %s failed", |
| 972 | prop_name, dev->of_node->full_name); |
| 973 | return -ENODEV; |
| 974 | } |
| 975 | micbias->bias4_cfilt_sel = (u8)prop_val; |
| 976 | |
| 977 | dev_dbg(dev, "ldoh_v %u cfilt1_mv %u cfilt2_mv %u cfilt3_mv %u", |
| 978 | (u32)micbias->ldoh_v, (u32)micbias->cfilt1_mv, |
| 979 | (u32)micbias->cfilt2_mv, (u32)micbias->cfilt3_mv); |
| 980 | |
| 981 | dev_dbg(dev, "bias1_cfilt_sel %u bias2_cfilt_sel %u\n", |
| 982 | (u32)micbias->bias1_cfilt_sel, (u32)micbias->bias2_cfilt_sel); |
| 983 | |
| 984 | dev_dbg(dev, "bias3_cfilt_sel %u bias4_cfilt_sel %u\n", |
| 985 | (u32)micbias->bias3_cfilt_sel, (u32)micbias->bias4_cfilt_sel); |
| 986 | |
| 987 | return 0; |
| 988 | } |
| 989 | |
| 990 | static int wcd9xxx_dt_parse_slim_interface_dev_info(struct device *dev, |
| 991 | struct slim_device *slim_ifd) |
| 992 | { |
| 993 | int ret = 0; |
| 994 | struct property *prop; |
| 995 | |
| 996 | ret = of_property_read_string(dev->of_node, "qcom,cdc-slim-ifd", |
| 997 | &slim_ifd->name); |
| 998 | if (ret) { |
| 999 | dev_err(dev, "Looking up %s property in node %s failed", |
| 1000 | "qcom,cdc-slim-ifd-dev", dev->of_node->full_name); |
| 1001 | return -ENODEV; |
| 1002 | } |
| 1003 | prop = of_find_property(dev->of_node, |
| 1004 | "qcom,cdc-slim-ifd-elemental-addr", NULL); |
| 1005 | if (!prop) { |
| 1006 | dev_err(dev, "Looking up %s property in node %s failed", |
| 1007 | "qcom,cdc-slim-ifd-elemental-addr", |
| 1008 | dev->of_node->full_name); |
| 1009 | return -ENODEV; |
| 1010 | } else if (prop->length != 6) { |
| 1011 | dev_err(dev, "invalid codec slim ifd addr. addr length = %d\n", |
| 1012 | prop->length); |
| 1013 | return -ENODEV; |
| 1014 | } |
| 1015 | memcpy(slim_ifd->e_addr, prop->value, 6); |
| 1016 | |
| 1017 | return 0; |
| 1018 | } |
| 1019 | |
| 1020 | static char *taiko_supplies[] = { |
| 1021 | "cdc-vdd-buck", "cdc-vdd-tx-h", "cdc-vdd-rx-h", "cdc-vddpx-1", |
| 1022 | "cdc-vdd-a-1p2v", "cdc-vddcx-1", "cdc-vddcx-2", |
| 1023 | }; |
| 1024 | |
| 1025 | static struct wcd9xxx_pdata *wcd9xxx_populate_dt_pdata(struct device *dev) |
| 1026 | { |
| 1027 | struct wcd9xxx_pdata *pdata; |
| 1028 | int ret, i; |
| 1029 | char **codec_supplies; |
| 1030 | u32 num_of_supplies = 0; |
| 1031 | |
| 1032 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); |
| 1033 | if (!pdata) { |
| 1034 | dev_err(dev, |
| 1035 | "could not allocate memory for platform data\n"); |
| 1036 | return NULL; |
| 1037 | } |
| 1038 | |
| 1039 | if (!strcmp(dev_name(dev), "taiko-slim-pgd")) { |
| 1040 | codec_supplies = taiko_supplies; |
| 1041 | num_of_supplies = ARRAY_SIZE(taiko_supplies); |
| 1042 | } else { |
| 1043 | dev_err(dev, "%s unsupported device %s\n", |
| 1044 | __func__, dev_name(dev)); |
| 1045 | goto err; |
| 1046 | } |
| 1047 | |
| 1048 | if (num_of_supplies > ARRAY_SIZE(pdata->regulator)) { |
| 1049 | dev_err(dev, "%s: Num of supplies %u > max supported %u\n", |
| 1050 | __func__, num_of_supplies, ARRAY_SIZE(pdata->regulator)); |
| 1051 | |
| 1052 | goto err; |
| 1053 | } |
| 1054 | |
| 1055 | for (i = 0; i < num_of_supplies; i++) { |
| 1056 | ret = wcd9xxx_dt_parse_vreg_info(dev, &pdata->regulator[i], |
| 1057 | codec_supplies[i]); |
| 1058 | if (ret) |
| 1059 | goto err; |
| 1060 | } |
| 1061 | |
| 1062 | ret = wcd9xxx_dt_parse_micbias_info(dev, &pdata->micbias); |
| 1063 | if (ret) |
| 1064 | goto err; |
| 1065 | |
| 1066 | pdata->reset_gpio = of_get_named_gpio(dev->of_node, |
| 1067 | "qcom,cdc-reset-gpio", 0); |
| 1068 | if (pdata->reset_gpio < 0) { |
| 1069 | dev_err(dev, "Looking up %s property in node %s failed %d\n", |
| 1070 | "qcom, cdc-reset-gpio", dev->of_node->full_name, |
| 1071 | pdata->reset_gpio); |
| 1072 | goto err; |
| 1073 | } |
| 1074 | pdata->irq = -1; |
| 1075 | |
| 1076 | ret = wcd9xxx_dt_parse_slim_interface_dev_info(dev, |
| 1077 | &pdata->slimbus_slave_device); |
| 1078 | if (ret) |
| 1079 | goto err; |
| 1080 | return pdata; |
| 1081 | err: |
| 1082 | devm_kfree(dev, pdata); |
| 1083 | return NULL; |
| 1084 | } |
| 1085 | |
Joonwoo Park | 3c5b2df | 2012-08-28 15:36:55 -0700 | [diff] [blame] | 1086 | static int wcd9xxx_slim_get_laddr(struct slim_device *sb, |
| 1087 | const u8 *e_addr, u8 e_len, u8 *laddr) |
| 1088 | { |
| 1089 | int ret; |
| 1090 | const unsigned long timeout = jiffies + |
| 1091 | msecs_to_jiffies(SLIMBUS_PRESENT_TIMEOUT); |
| 1092 | |
| 1093 | do { |
| 1094 | ret = slim_get_logical_addr(sb, e_addr, e_len, laddr); |
| 1095 | if (!ret) |
| 1096 | break; |
| 1097 | /* Give SLIMBUS time to report present and be ready. */ |
| 1098 | usleep_range(1000, 1000); |
| 1099 | pr_debug_ratelimited("%s: retyring get logical addr\n", |
| 1100 | __func__); |
| 1101 | } while time_before(jiffies, timeout); |
| 1102 | |
| 1103 | return ret; |
| 1104 | } |
| 1105 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1106 | static int wcd9xxx_slim_probe(struct slim_device *slim) |
| 1107 | { |
| 1108 | struct wcd9xxx *wcd9xxx; |
| 1109 | struct wcd9xxx_pdata *pdata; |
| 1110 | int ret = 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1111 | |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 1112 | if (slim->dev.of_node) { |
| 1113 | dev_info(&slim->dev, "Platform data from device tree\n"); |
| 1114 | pdata = wcd9xxx_populate_dt_pdata(&slim->dev); |
| 1115 | slim->dev.platform_data = pdata; |
| 1116 | |
| 1117 | } else { |
| 1118 | dev_info(&slim->dev, "Platform data from board file\n"); |
| 1119 | pdata = slim->dev.platform_data; |
| 1120 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1121 | |
| 1122 | if (!pdata) { |
| 1123 | dev_err(&slim->dev, "Error, no platform data\n"); |
| 1124 | ret = -EINVAL; |
| 1125 | goto err; |
| 1126 | } |
| 1127 | |
| 1128 | wcd9xxx = kzalloc(sizeof(struct wcd9xxx), GFP_KERNEL); |
| 1129 | if (wcd9xxx == NULL) { |
| 1130 | pr_err("%s: error, allocation failed\n", __func__); |
| 1131 | ret = -ENOMEM; |
| 1132 | goto err; |
| 1133 | } |
| 1134 | if (!slim->ctrl) { |
| 1135 | pr_err("Error, no SLIMBUS control data\n"); |
| 1136 | ret = -EINVAL; |
| 1137 | goto err_codec; |
| 1138 | } |
| 1139 | wcd9xxx->slim = slim; |
| 1140 | slim_set_clientdata(slim, wcd9xxx); |
| 1141 | wcd9xxx->reset_gpio = pdata->reset_gpio; |
| 1142 | wcd9xxx->dev = &slim->dev; |
| 1143 | |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 1144 | ret = wcd9xxx_enable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1145 | if (ret) |
| 1146 | goto err_codec; |
| 1147 | usleep_range(5, 5); |
| 1148 | |
| 1149 | ret = wcd9xxx_reset(wcd9xxx); |
| 1150 | if (ret) { |
| 1151 | pr_err("%s: Resetting Codec failed\n", __func__); |
| 1152 | goto err_supplies; |
| 1153 | } |
| 1154 | |
Joonwoo Park | 3c5b2df | 2012-08-28 15:36:55 -0700 | [diff] [blame] | 1155 | ret = wcd9xxx_slim_get_laddr(wcd9xxx->slim, wcd9xxx->slim->e_addr, |
| 1156 | ARRAY_SIZE(wcd9xxx->slim->e_addr), |
| 1157 | &wcd9xxx->slim->laddr); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1158 | if (ret) { |
Joonwoo Park | 3c5b2df | 2012-08-28 15:36:55 -0700 | [diff] [blame] | 1159 | pr_err("%s: failed to get slimbus %s logical address: %d\n", |
| 1160 | __func__, wcd9xxx->slim->name, ret); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1161 | goto err_reset; |
| 1162 | } |
| 1163 | wcd9xxx->read_dev = wcd9xxx_slim_read_device; |
| 1164 | wcd9xxx->write_dev = wcd9xxx_slim_write_device; |
| 1165 | wcd9xxx->irq = pdata->irq; |
| 1166 | wcd9xxx->irq_base = pdata->irq_base; |
| 1167 | wcd9xxx_pgd_la = wcd9xxx->slim->laddr; |
| 1168 | |
Joonwoo Park | 51d8966 | 2012-08-28 17:21:24 -0700 | [diff] [blame] | 1169 | if (pdata->num_irqs < TABLA_NUM_IRQS) |
| 1170 | pr_warn("%s: Not enough interrupt lines allocated\n", __func__); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1171 | |
| 1172 | wcd9xxx->slim_slave = &pdata->slimbus_slave_device; |
| 1173 | |
| 1174 | ret = slim_add_device(slim->ctrl, wcd9xxx->slim_slave); |
| 1175 | if (ret) { |
| 1176 | pr_err("%s: error, adding SLIMBUS device failed\n", __func__); |
| 1177 | goto err_reset; |
| 1178 | } |
| 1179 | |
Joonwoo Park | 3c5b2df | 2012-08-28 15:36:55 -0700 | [diff] [blame] | 1180 | ret = wcd9xxx_slim_get_laddr(wcd9xxx->slim_slave, |
| 1181 | wcd9xxx->slim_slave->e_addr, |
| 1182 | ARRAY_SIZE(wcd9xxx->slim_slave->e_addr), |
| 1183 | &wcd9xxx->slim_slave->laddr); |
| 1184 | if (ret) { |
| 1185 | pr_err("%s: failed to get slimbus %s logical address: %d\n", |
| 1186 | __func__, wcd9xxx->slim->name, ret); |
| 1187 | goto err_slim_add; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1188 | } |
| 1189 | wcd9xxx_inf_la = wcd9xxx->slim_slave->laddr; |
| 1190 | wcd9xxx_intf = WCD9XXX_INTERFACE_TYPE_SLIMBUS; |
| 1191 | |
| 1192 | ret = wcd9xxx_device_init(wcd9xxx, wcd9xxx->irq); |
| 1193 | if (ret) { |
| 1194 | pr_err("%s: error, initializing device failed\n", __func__); |
| 1195 | goto err_slim_add; |
| 1196 | } |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 1197 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1198 | wcd9xxx_init_slimslave(wcd9xxx, wcd9xxx_pgd_la); |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 1199 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1200 | #ifdef CONFIG_DEBUG_FS |
| 1201 | debugCodec = wcd9xxx; |
| 1202 | |
| 1203 | debugfs_wcd9xxx_dent = debugfs_create_dir |
| 1204 | ("wcd9310_slimbus_interface_device", 0); |
| 1205 | if (!IS_ERR(debugfs_wcd9xxx_dent)) { |
| 1206 | debugfs_peek = debugfs_create_file("peek", |
| 1207 | S_IFREG | S_IRUGO, debugfs_wcd9xxx_dent, |
| 1208 | (void *) "peek", &codec_debug_ops); |
| 1209 | |
| 1210 | debugfs_poke = debugfs_create_file("poke", |
| 1211 | S_IFREG | S_IRUGO, debugfs_wcd9xxx_dent, |
| 1212 | (void *) "poke", &codec_debug_ops); |
| 1213 | } |
| 1214 | #endif |
| 1215 | |
| 1216 | return ret; |
| 1217 | |
| 1218 | err_slim_add: |
| 1219 | slim_remove_device(wcd9xxx->slim_slave); |
| 1220 | err_reset: |
| 1221 | wcd9xxx_free_reset(wcd9xxx); |
| 1222 | err_supplies: |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 1223 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1224 | err_codec: |
| 1225 | kfree(wcd9xxx); |
| 1226 | err: |
| 1227 | return ret; |
| 1228 | } |
| 1229 | static int wcd9xxx_slim_remove(struct slim_device *pdev) |
| 1230 | { |
| 1231 | struct wcd9xxx *wcd9xxx; |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 1232 | struct wcd9xxx_pdata *pdata = pdev->dev.platform_data; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1233 | |
| 1234 | #ifdef CONFIG_DEBUG_FS |
| 1235 | debugfs_remove(debugfs_peek); |
| 1236 | debugfs_remove(debugfs_poke); |
| 1237 | debugfs_remove(debugfs_wcd9xxx_dent); |
| 1238 | #endif |
| 1239 | wcd9xxx = slim_get_devicedata(pdev); |
| 1240 | wcd9xxx_deinit_slimslave(wcd9xxx); |
| 1241 | slim_remove_device(wcd9xxx->slim_slave); |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 1242 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1243 | wcd9xxx_device_exit(wcd9xxx); |
| 1244 | return 0; |
| 1245 | } |
| 1246 | |
| 1247 | static int wcd9xxx_resume(struct wcd9xxx *wcd9xxx) |
| 1248 | { |
| 1249 | int ret = 0; |
| 1250 | |
| 1251 | pr_debug("%s: enter\n", __func__); |
| 1252 | mutex_lock(&wcd9xxx->pm_lock); |
| 1253 | if (wcd9xxx->pm_state == WCD9XXX_PM_ASLEEP) { |
| 1254 | pr_debug("%s: resuming system, state %d, wlock %d\n", __func__, |
| 1255 | wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1256 | wcd9xxx->pm_state = WCD9XXX_PM_SLEEPABLE; |
| 1257 | } else { |
| 1258 | pr_warn("%s: system is already awake, state %d wlock %d\n", |
| 1259 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1260 | } |
| 1261 | mutex_unlock(&wcd9xxx->pm_lock); |
| 1262 | wake_up_all(&wcd9xxx->pm_wq); |
| 1263 | |
| 1264 | return ret; |
| 1265 | } |
| 1266 | |
| 1267 | static int wcd9xxx_slim_resume(struct slim_device *sldev) |
| 1268 | { |
| 1269 | struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev); |
| 1270 | return wcd9xxx_resume(wcd9xxx); |
| 1271 | } |
| 1272 | |
| 1273 | static int wcd9xxx_i2c_resume(struct i2c_client *i2cdev) |
| 1274 | { |
| 1275 | struct wcd9xxx *wcd9xxx = dev_get_drvdata(&i2cdev->dev); |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1276 | if (wcd9xxx) |
| 1277 | return wcd9xxx_resume(wcd9xxx); |
| 1278 | else |
| 1279 | return 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1280 | } |
| 1281 | |
| 1282 | static int wcd9xxx_suspend(struct wcd9xxx *wcd9xxx, pm_message_t pmesg) |
| 1283 | { |
| 1284 | int ret = 0; |
| 1285 | |
| 1286 | pr_debug("%s: enter\n", __func__); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 1287 | /* |
| 1288 | * pm_qos_update_request() can be called after this suspend chain call |
| 1289 | * started. thus suspend can be called while lock is being held |
| 1290 | */ |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1291 | mutex_lock(&wcd9xxx->pm_lock); |
| 1292 | if (wcd9xxx->pm_state == WCD9XXX_PM_SLEEPABLE) { |
| 1293 | pr_debug("%s: suspending system, state %d, wlock %d\n", |
| 1294 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1295 | wcd9xxx->pm_state = WCD9XXX_PM_ASLEEP; |
| 1296 | } else if (wcd9xxx->pm_state == WCD9XXX_PM_AWAKE) { |
| 1297 | /* unlock to wait for pm_state == WCD9XXX_PM_SLEEPABLE |
| 1298 | * then set to WCD9XXX_PM_ASLEEP */ |
| 1299 | pr_debug("%s: waiting to suspend system, state %d, wlock %d\n", |
| 1300 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1301 | mutex_unlock(&wcd9xxx->pm_lock); |
| 1302 | if (!(wait_event_timeout(wcd9xxx->pm_wq, |
| 1303 | wcd9xxx_pm_cmpxchg(wcd9xxx, |
| 1304 | WCD9XXX_PM_SLEEPABLE, |
| 1305 | WCD9XXX_PM_ASLEEP) == |
| 1306 | WCD9XXX_PM_SLEEPABLE, |
| 1307 | HZ))) { |
| 1308 | pr_debug("%s: suspend failed state %d, wlock %d\n", |
| 1309 | __func__, wcd9xxx->pm_state, |
| 1310 | wcd9xxx->wlock_holders); |
| 1311 | ret = -EBUSY; |
| 1312 | } else { |
| 1313 | pr_debug("%s: done, state %d, wlock %d\n", __func__, |
| 1314 | wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1315 | } |
| 1316 | mutex_lock(&wcd9xxx->pm_lock); |
| 1317 | } else if (wcd9xxx->pm_state == WCD9XXX_PM_ASLEEP) { |
| 1318 | pr_warn("%s: system is already suspended, state %d, wlock %dn", |
| 1319 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1320 | } |
| 1321 | mutex_unlock(&wcd9xxx->pm_lock); |
| 1322 | |
| 1323 | return ret; |
| 1324 | } |
| 1325 | |
| 1326 | static int wcd9xxx_slim_suspend(struct slim_device *sldev, pm_message_t pmesg) |
| 1327 | { |
| 1328 | struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev); |
| 1329 | return wcd9xxx_suspend(wcd9xxx, pmesg); |
| 1330 | } |
| 1331 | |
| 1332 | static int wcd9xxx_i2c_suspend(struct i2c_client *i2cdev, pm_message_t pmesg) |
| 1333 | { |
| 1334 | struct wcd9xxx *wcd9xxx = dev_get_drvdata(&i2cdev->dev); |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1335 | if (wcd9xxx) |
| 1336 | return wcd9xxx_suspend(wcd9xxx, pmesg); |
| 1337 | else |
| 1338 | return 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1339 | } |
| 1340 | |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1341 | static const struct slim_device_id sitar_slimtest_id[] = { |
| 1342 | {"sitar-slim", 0}, |
| 1343 | {} |
| 1344 | }; |
| 1345 | static struct slim_driver sitar_slim_driver = { |
| 1346 | .driver = { |
| 1347 | .name = "sitar-slim", |
| 1348 | .owner = THIS_MODULE, |
| 1349 | }, |
| 1350 | .probe = wcd9xxx_slim_probe, |
| 1351 | .remove = wcd9xxx_slim_remove, |
| 1352 | .id_table = sitar_slimtest_id, |
| 1353 | .resume = wcd9xxx_slim_resume, |
| 1354 | .suspend = wcd9xxx_slim_suspend, |
| 1355 | }; |
| 1356 | |
Bhalchandra Gajare | 83c81f6 | 2012-05-18 16:09:05 -0700 | [diff] [blame] | 1357 | static const struct slim_device_id sitar1p1_slimtest_id[] = { |
| 1358 | {"sitar1p1-slim", 0}, |
| 1359 | {} |
| 1360 | }; |
| 1361 | static struct slim_driver sitar1p1_slim_driver = { |
| 1362 | .driver = { |
| 1363 | .name = "sitar1p1-slim", |
| 1364 | .owner = THIS_MODULE, |
| 1365 | }, |
| 1366 | .probe = wcd9xxx_slim_probe, |
| 1367 | .remove = wcd9xxx_slim_remove, |
| 1368 | .id_table = sitar1p1_slimtest_id, |
| 1369 | .resume = wcd9xxx_slim_resume, |
| 1370 | .suspend = wcd9xxx_slim_suspend, |
| 1371 | }; |
| 1372 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1373 | static const struct slim_device_id slimtest_id[] = { |
| 1374 | {"tabla-slim", 0}, |
| 1375 | {} |
| 1376 | }; |
| 1377 | |
| 1378 | static struct slim_driver tabla_slim_driver = { |
| 1379 | .driver = { |
| 1380 | .name = "tabla-slim", |
| 1381 | .owner = THIS_MODULE, |
| 1382 | }, |
| 1383 | .probe = wcd9xxx_slim_probe, |
| 1384 | .remove = wcd9xxx_slim_remove, |
| 1385 | .id_table = slimtest_id, |
| 1386 | .resume = wcd9xxx_slim_resume, |
| 1387 | .suspend = wcd9xxx_slim_suspend, |
| 1388 | }; |
| 1389 | |
| 1390 | static const struct slim_device_id slimtest2x_id[] = { |
| 1391 | {"tabla2x-slim", 0}, |
| 1392 | {} |
| 1393 | }; |
| 1394 | |
| 1395 | static struct slim_driver tabla2x_slim_driver = { |
| 1396 | .driver = { |
| 1397 | .name = "tabla2x-slim", |
| 1398 | .owner = THIS_MODULE, |
| 1399 | }, |
| 1400 | .probe = wcd9xxx_slim_probe, |
| 1401 | .remove = wcd9xxx_slim_remove, |
| 1402 | .id_table = slimtest2x_id, |
| 1403 | .resume = wcd9xxx_slim_resume, |
| 1404 | .suspend = wcd9xxx_slim_suspend, |
| 1405 | }; |
| 1406 | |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 1407 | static const struct slim_device_id taiko_slimtest_id[] = { |
Kiran Kandi | 725f849 | 2012-08-06 13:45:16 -0700 | [diff] [blame] | 1408 | {"taiko-slim-pgd", 0}, |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 1409 | {} |
| 1410 | }; |
| 1411 | |
| 1412 | static struct slim_driver taiko_slim_driver = { |
| 1413 | .driver = { |
| 1414 | .name = "taiko-slim", |
| 1415 | .owner = THIS_MODULE, |
| 1416 | }, |
| 1417 | .probe = wcd9xxx_slim_probe, |
| 1418 | .remove = wcd9xxx_slim_remove, |
| 1419 | .id_table = taiko_slimtest_id, |
| 1420 | .resume = wcd9xxx_slim_resume, |
| 1421 | .suspend = wcd9xxx_slim_suspend, |
| 1422 | }; |
| 1423 | |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame] | 1424 | #define WCD9XXX_I2C_TOP_LEVEL 0 |
| 1425 | #define WCD9XXX_I2C_ANALOG 1 |
| 1426 | #define WCD9XXX_I2C_DIGITAL_1 2 |
| 1427 | #define WCD9XXX_I2C_DIGITAL_2 3 |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1428 | |
| 1429 | static struct i2c_device_id tabla_id_table[] = { |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame] | 1430 | {"tabla top level", WCD9XXX_I2C_TOP_LEVEL}, |
| 1431 | {"tabla analog", WCD9XXX_I2C_ANALOG}, |
| 1432 | {"tabla digital1", WCD9XXX_I2C_DIGITAL_1}, |
| 1433 | {"tabla digital2", WCD9XXX_I2C_DIGITAL_2}, |
| 1434 | {} |
| 1435 | }; |
| 1436 | MODULE_DEVICE_TABLE(i2c, tabla_id_table); |
| 1437 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1438 | static struct i2c_driver tabla_i2c_driver = { |
| 1439 | .driver = { |
| 1440 | .owner = THIS_MODULE, |
| 1441 | .name = "tabla-i2c-core", |
| 1442 | }, |
| 1443 | .id_table = tabla_id_table, |
| 1444 | .probe = wcd9xxx_i2c_probe, |
| 1445 | .remove = __devexit_p(wcd9xxx_i2c_remove), |
| 1446 | .resume = wcd9xxx_i2c_resume, |
| 1447 | .suspend = wcd9xxx_i2c_suspend, |
| 1448 | }; |
| 1449 | |
| 1450 | static int __init wcd9xxx_init(void) |
| 1451 | { |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 1452 | int ret1, ret2, ret3, ret4, ret5, ret6; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1453 | |
| 1454 | ret1 = slim_driver_register(&tabla_slim_driver); |
| 1455 | if (ret1 != 0) |
| 1456 | pr_err("Failed to register tabla SB driver: %d\n", ret1); |
| 1457 | |
| 1458 | ret2 = slim_driver_register(&tabla2x_slim_driver); |
| 1459 | if (ret2 != 0) |
| 1460 | pr_err("Failed to register tabla2x SB driver: %d\n", ret2); |
| 1461 | |
| 1462 | ret3 = i2c_add_driver(&tabla_i2c_driver); |
| 1463 | if (ret3 != 0) |
| 1464 | pr_err("failed to add the I2C driver\n"); |
| 1465 | |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1466 | ret4 = slim_driver_register(&sitar_slim_driver); |
Bhalchandra Gajare | 83c81f6 | 2012-05-18 16:09:05 -0700 | [diff] [blame] | 1467 | if (ret4 != 0) |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1468 | pr_err("Failed to register sitar SB driver: %d\n", ret4); |
| 1469 | |
Bhalchandra Gajare | 83c81f6 | 2012-05-18 16:09:05 -0700 | [diff] [blame] | 1470 | ret5 = slim_driver_register(&sitar1p1_slim_driver); |
| 1471 | if (ret5 != 0) |
| 1472 | pr_err("Failed to register sitar SB driver: %d\n", ret5); |
| 1473 | |
Joonwoo Park | a717211 | 2012-07-23 16:03:49 -0700 | [diff] [blame] | 1474 | ret6 = slim_driver_register(&taiko_slim_driver); |
| 1475 | if (ret6 != 0) |
| 1476 | pr_err("Failed to register taiko SB driver: %d\n", ret6); |
| 1477 | |
| 1478 | return (ret1 && ret2 && ret3 && ret4 && ret5 && ret6) ? -1 : 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1479 | } |
| 1480 | module_init(wcd9xxx_init); |
| 1481 | |
| 1482 | static void __exit wcd9xxx_exit(void) |
| 1483 | { |
| 1484 | } |
| 1485 | module_exit(wcd9xxx_exit); |
| 1486 | |
| 1487 | MODULE_DESCRIPTION("Codec core driver"); |
| 1488 | MODULE_VERSION("1.0"); |
| 1489 | MODULE_LICENSE("GPL v2"); |