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> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/mfd/core.h> |
| 17 | #include <linux/mfd/wcd9xxx/wcd9xxx-slimslave.h> |
| 18 | #include <linux/mfd/wcd9xxx/core.h> |
| 19 | #include <linux/mfd/wcd9xxx/pdata.h> |
| 20 | #include <linux/mfd/wcd9xxx/wcd9xxx_registers.h> |
| 21 | |
| 22 | #include <linux/delay.h> |
| 23 | #include <linux/gpio.h> |
| 24 | #include <linux/debugfs.h> |
| 25 | #include <linux/regulator/consumer.h> |
| 26 | #include <linux/i2c.h> |
| 27 | #include <sound/soc.h> |
| 28 | |
| 29 | #define WCD9XXX_SLIM_GLA_MAX_RETRIES 5 |
| 30 | #define WCD9XXX_REGISTER_START_OFFSET 0x800 |
| 31 | #define WCD9XXX_SLIM_RW_MAX_TRIES 3 |
| 32 | |
| 33 | #define MAX_WCD9XXX_DEVICE 4 |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 34 | #define TABLA_I2C_MODE 0x03 |
| 35 | #define SITAR_I2C_MODE 0x01 |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 36 | |
| 37 | struct wcd9xxx_i2c { |
| 38 | struct i2c_client *client; |
| 39 | struct i2c_msg xfer_msg[2]; |
| 40 | struct mutex xfer_lock; |
| 41 | int mod_id; |
| 42 | }; |
| 43 | |
| 44 | struct wcd9xxx_i2c wcd9xxx_modules[MAX_WCD9XXX_DEVICE]; |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 45 | static int wcd9xxx_intf = -1; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 46 | |
| 47 | static int wcd9xxx_read(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 48 | int bytes, void *dest, bool interface_reg) |
| 49 | { |
| 50 | int ret; |
| 51 | u8 *buf = dest; |
| 52 | |
| 53 | if (bytes <= 0) { |
| 54 | dev_err(wcd9xxx->dev, "Invalid byte read length %d\n", bytes); |
| 55 | return -EINVAL; |
| 56 | } |
| 57 | |
| 58 | ret = wcd9xxx->read_dev(wcd9xxx, reg, bytes, dest, interface_reg); |
| 59 | if (ret < 0) { |
| 60 | dev_err(wcd9xxx->dev, "Codec read failed\n"); |
| 61 | return ret; |
| 62 | } else |
Kiran Kandi | 1e6371d | 2012-03-29 11:48:57 -0700 | [diff] [blame] | 63 | dev_dbg(wcd9xxx->dev, "Read 0x%02x from 0x%x\n", |
| 64 | *buf, reg); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | int wcd9xxx_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg) |
| 69 | { |
| 70 | u8 val; |
| 71 | int ret; |
| 72 | |
| 73 | mutex_lock(&wcd9xxx->io_lock); |
| 74 | ret = wcd9xxx_read(wcd9xxx, reg, 1, &val, false); |
| 75 | mutex_unlock(&wcd9xxx->io_lock); |
| 76 | |
| 77 | if (ret < 0) |
| 78 | return ret; |
| 79 | else |
| 80 | return val; |
| 81 | } |
| 82 | EXPORT_SYMBOL_GPL(wcd9xxx_reg_read); |
| 83 | |
| 84 | static int wcd9xxx_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 85 | int bytes, void *src, bool interface_reg) |
| 86 | { |
| 87 | u8 *buf = src; |
| 88 | |
| 89 | if (bytes <= 0) { |
| 90 | pr_err("%s: Error, invalid write length\n", __func__); |
| 91 | return -EINVAL; |
| 92 | } |
| 93 | |
Kiran Kandi | 1e6371d | 2012-03-29 11:48:57 -0700 | [diff] [blame] | 94 | dev_dbg(wcd9xxx->dev, "Write %02x to 0x%x\n", |
| 95 | *buf, reg); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 96 | |
| 97 | return wcd9xxx->write_dev(wcd9xxx, reg, bytes, src, interface_reg); |
| 98 | } |
| 99 | |
| 100 | int wcd9xxx_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 101 | u8 val) |
| 102 | { |
| 103 | int ret; |
| 104 | |
| 105 | mutex_lock(&wcd9xxx->io_lock); |
| 106 | ret = wcd9xxx_write(wcd9xxx, reg, 1, &val, false); |
| 107 | mutex_unlock(&wcd9xxx->io_lock); |
| 108 | |
| 109 | return ret; |
| 110 | } |
| 111 | EXPORT_SYMBOL_GPL(wcd9xxx_reg_write); |
| 112 | |
| 113 | static u8 wcd9xxx_pgd_la; |
| 114 | static u8 wcd9xxx_inf_la; |
| 115 | |
| 116 | int wcd9xxx_interface_reg_read(struct wcd9xxx *wcd9xxx, unsigned short reg) |
| 117 | { |
| 118 | u8 val; |
| 119 | int ret; |
| 120 | |
| 121 | mutex_lock(&wcd9xxx->io_lock); |
| 122 | ret = wcd9xxx_read(wcd9xxx, reg, 1, &val, true); |
| 123 | mutex_unlock(&wcd9xxx->io_lock); |
| 124 | |
| 125 | if (ret < 0) |
| 126 | return ret; |
| 127 | else |
| 128 | return val; |
| 129 | } |
| 130 | EXPORT_SYMBOL_GPL(wcd9xxx_interface_reg_read); |
| 131 | |
| 132 | int wcd9xxx_interface_reg_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 133 | u8 val) |
| 134 | { |
| 135 | int ret; |
| 136 | |
| 137 | mutex_lock(&wcd9xxx->io_lock); |
| 138 | ret = wcd9xxx_write(wcd9xxx, reg, 1, &val, true); |
| 139 | mutex_unlock(&wcd9xxx->io_lock); |
| 140 | |
| 141 | return ret; |
| 142 | } |
| 143 | EXPORT_SYMBOL_GPL(wcd9xxx_interface_reg_write); |
| 144 | |
| 145 | int wcd9xxx_bulk_read(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 146 | int count, u8 *buf) |
| 147 | { |
| 148 | int ret; |
| 149 | |
| 150 | mutex_lock(&wcd9xxx->io_lock); |
| 151 | |
| 152 | ret = wcd9xxx_read(wcd9xxx, reg, count, buf, false); |
| 153 | |
| 154 | mutex_unlock(&wcd9xxx->io_lock); |
| 155 | |
| 156 | return ret; |
| 157 | } |
| 158 | EXPORT_SYMBOL_GPL(wcd9xxx_bulk_read); |
| 159 | |
| 160 | int wcd9xxx_bulk_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 161 | int count, u8 *buf) |
| 162 | { |
| 163 | int ret; |
| 164 | |
| 165 | mutex_lock(&wcd9xxx->io_lock); |
| 166 | |
| 167 | ret = wcd9xxx_write(wcd9xxx, reg, count, buf, false); |
| 168 | |
| 169 | mutex_unlock(&wcd9xxx->io_lock); |
| 170 | |
| 171 | return ret; |
| 172 | } |
| 173 | EXPORT_SYMBOL_GPL(wcd9xxx_bulk_write); |
| 174 | |
| 175 | static int wcd9xxx_slim_read_device(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 176 | int bytes, void *dest, bool interface) |
| 177 | { |
| 178 | int ret; |
| 179 | struct slim_ele_access msg; |
| 180 | int slim_read_tries = WCD9XXX_SLIM_RW_MAX_TRIES; |
| 181 | msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg; |
| 182 | msg.num_bytes = bytes; |
| 183 | msg.comp = NULL; |
| 184 | |
| 185 | while (1) { |
| 186 | mutex_lock(&wcd9xxx->xfer_lock); |
| 187 | ret = slim_request_val_element(interface ? |
| 188 | wcd9xxx->slim_slave : wcd9xxx->slim, |
| 189 | &msg, dest, bytes); |
| 190 | mutex_unlock(&wcd9xxx->xfer_lock); |
| 191 | if (likely(ret == 0) || (--slim_read_tries == 0)) |
| 192 | break; |
| 193 | usleep_range(5000, 5000); |
| 194 | } |
| 195 | |
| 196 | if (ret) |
| 197 | pr_err("%s: Error, Codec read failed (%d)\n", __func__, ret); |
| 198 | |
| 199 | return ret; |
| 200 | } |
| 201 | /* Interface specifies whether the write is to the interface or general |
| 202 | * registers. |
| 203 | */ |
| 204 | static int wcd9xxx_slim_write_device(struct wcd9xxx *wcd9xxx, |
| 205 | unsigned short reg, int bytes, void *src, bool interface) |
| 206 | { |
| 207 | int ret; |
| 208 | struct slim_ele_access msg; |
| 209 | int slim_write_tries = WCD9XXX_SLIM_RW_MAX_TRIES; |
| 210 | msg.start_offset = WCD9XXX_REGISTER_START_OFFSET + reg; |
| 211 | msg.num_bytes = bytes; |
| 212 | msg.comp = NULL; |
| 213 | |
| 214 | while (1) { |
| 215 | mutex_lock(&wcd9xxx->xfer_lock); |
| 216 | ret = slim_change_val_element(interface ? |
| 217 | wcd9xxx->slim_slave : wcd9xxx->slim, |
| 218 | &msg, src, bytes); |
| 219 | mutex_unlock(&wcd9xxx->xfer_lock); |
| 220 | if (likely(ret == 0) || (--slim_write_tries == 0)) |
| 221 | break; |
| 222 | usleep_range(5000, 5000); |
| 223 | } |
| 224 | |
| 225 | if (ret) |
| 226 | pr_err("%s: Error, Codec write failed (%d)\n", __func__, ret); |
| 227 | |
| 228 | return ret; |
| 229 | } |
| 230 | |
| 231 | static struct mfd_cell tabla1x_devs[] = { |
| 232 | { |
| 233 | .name = "tabla1x_codec", |
| 234 | }, |
| 235 | }; |
| 236 | |
| 237 | static struct mfd_cell tabla_devs[] = { |
| 238 | { |
| 239 | .name = "tabla_codec", |
| 240 | }, |
| 241 | }; |
| 242 | |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 243 | static struct mfd_cell sitar_devs[] = { |
| 244 | { |
| 245 | .name = "sitar_codec", |
| 246 | }, |
| 247 | }; |
| 248 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 249 | static void wcd9xxx_bring_up(struct wcd9xxx *wcd9xxx) |
| 250 | { |
| 251 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x4); |
| 252 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_CDC_CTL, 0); |
| 253 | usleep_range(5000, 5000); |
| 254 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_CDC_CTL, 3); |
| 255 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 3); |
| 256 | } |
| 257 | |
| 258 | static void wcd9xxx_bring_down(struct wcd9xxx *wcd9xxx) |
| 259 | { |
| 260 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x7); |
| 261 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x6); |
| 262 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0xe); |
| 263 | wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_LEAKAGE_CTL, 0x8); |
| 264 | } |
| 265 | |
| 266 | static int wcd9xxx_reset(struct wcd9xxx *wcd9xxx) |
| 267 | { |
| 268 | int ret; |
| 269 | |
| 270 | if (wcd9xxx->reset_gpio) { |
| 271 | ret = gpio_request(wcd9xxx->reset_gpio, "CDC_RESET"); |
| 272 | if (ret) { |
| 273 | pr_err("%s: Failed to request gpio %d\n", __func__, |
| 274 | wcd9xxx->reset_gpio); |
| 275 | wcd9xxx->reset_gpio = 0; |
| 276 | return ret; |
| 277 | } |
| 278 | |
| 279 | gpio_direction_output(wcd9xxx->reset_gpio, 1); |
| 280 | msleep(20); |
| 281 | gpio_direction_output(wcd9xxx->reset_gpio, 0); |
| 282 | msleep(20); |
| 283 | gpio_direction_output(wcd9xxx->reset_gpio, 1); |
| 284 | msleep(20); |
| 285 | } |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static void wcd9xxx_free_reset(struct wcd9xxx *wcd9xxx) |
| 290 | { |
| 291 | if (wcd9xxx->reset_gpio) { |
| 292 | gpio_free(wcd9xxx->reset_gpio); |
| 293 | wcd9xxx->reset_gpio = 0; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | static int wcd9xxx_device_init(struct wcd9xxx *wcd9xxx, int irq) |
| 298 | { |
| 299 | int ret; |
| 300 | u8 idbyte_0, idbyte_1, idbyte_2, idbyte_3; |
| 301 | struct mfd_cell *wcd9xxx_dev = NULL; |
| 302 | int wcd9xxx_dev_size = 0; |
| 303 | |
| 304 | mutex_init(&wcd9xxx->io_lock); |
| 305 | mutex_init(&wcd9xxx->xfer_lock); |
| 306 | |
| 307 | mutex_init(&wcd9xxx->pm_lock); |
| 308 | wcd9xxx->wlock_holders = 0; |
| 309 | wcd9xxx->pm_state = WCD9XXX_PM_SLEEPABLE; |
| 310 | init_waitqueue_head(&wcd9xxx->pm_wq); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 311 | pm_qos_add_request(&wcd9xxx->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
| 312 | PM_QOS_DEFAULT_VALUE); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 313 | |
| 314 | dev_set_drvdata(wcd9xxx->dev, wcd9xxx); |
| 315 | |
| 316 | wcd9xxx_bring_up(wcd9xxx); |
| 317 | |
| 318 | ret = wcd9xxx_irq_init(wcd9xxx); |
| 319 | if (ret) { |
| 320 | pr_err("IRQ initialization failed\n"); |
| 321 | goto err; |
| 322 | } |
| 323 | |
| 324 | idbyte_0 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_0); |
| 325 | idbyte_1 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_1); |
| 326 | idbyte_2 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_2); |
| 327 | idbyte_3 = wcd9xxx_reg_read(wcd9xxx, WCD9XXX_A_CHIP_ID_BYTE_3); |
| 328 | |
| 329 | wcd9xxx->version = wcd9xxx_reg_read(wcd9xxx, |
| 330 | WCD9XXX_A_CHIP_VERSION) & 0x1F; |
| 331 | pr_info("%s : Codec version %u initialized\n", |
| 332 | __func__, wcd9xxx->version); |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 333 | pr_info("idbyte_0[%08x] idbyte_1[%08x] idbyte_2[%08x] idbyte_3[%08x]\n", |
| 334 | idbyte_0, idbyte_1, idbyte_2, idbyte_3); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 335 | |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 336 | if (wcd9xxx->slim != NULL) { |
| 337 | if (!strncmp(wcd9xxx->slim->name, "tabla", 5)) { |
| 338 | if (TABLA_IS_1_X(wcd9xxx->version)) { |
| 339 | wcd9xxx_dev = tabla1x_devs; |
| 340 | wcd9xxx_dev_size = ARRAY_SIZE(tabla1x_devs); |
| 341 | } else { |
| 342 | wcd9xxx_dev = tabla_devs; |
| 343 | wcd9xxx_dev_size = ARRAY_SIZE(tabla_devs); |
| 344 | } |
| 345 | } else { |
| 346 | wcd9xxx_dev = sitar_devs; |
| 347 | wcd9xxx_dev_size = ARRAY_SIZE(sitar_devs); |
| 348 | } |
| 349 | } else { |
| 350 | /* Need to add here check for Tabla. |
| 351 | * For now the read of version takes |
| 352 | * care of now only tabla. |
| 353 | */ |
| 354 | pr_debug("%s : Read codec version using I2C\n", __func__); |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 355 | if (!strncmp(wcd9xxx_modules[0].client->name, "sitar", 5)) { |
| 356 | wcd9xxx_dev = sitar_devs; |
| 357 | wcd9xxx_dev_size = ARRAY_SIZE(sitar_devs); |
| 358 | } else if (TABLA_IS_1_X(wcd9xxx->version)) { |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 359 | wcd9xxx_dev = tabla1x_devs; |
| 360 | wcd9xxx_dev_size = ARRAY_SIZE(tabla1x_devs); |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 361 | } else if (TABLA_IS_2_0(wcd9xxx->version)) { |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 362 | wcd9xxx_dev = tabla_devs; |
| 363 | wcd9xxx_dev_size = ARRAY_SIZE(tabla_devs); |
| 364 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 365 | } |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 366 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 367 | ret = mfd_add_devices(wcd9xxx->dev, -1, |
| 368 | wcd9xxx_dev, wcd9xxx_dev_size, |
| 369 | NULL, 0); |
| 370 | if (ret != 0) { |
| 371 | dev_err(wcd9xxx->dev, "Failed to add children: %d\n", ret); |
| 372 | goto err_irq; |
| 373 | } |
| 374 | return ret; |
| 375 | err_irq: |
| 376 | wcd9xxx_irq_exit(wcd9xxx); |
| 377 | err: |
| 378 | wcd9xxx_bring_down(wcd9xxx); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 379 | pm_qos_remove_request(&wcd9xxx->pm_qos_req); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 380 | mutex_destroy(&wcd9xxx->pm_lock); |
| 381 | mutex_destroy(&wcd9xxx->io_lock); |
| 382 | mutex_destroy(&wcd9xxx->xfer_lock); |
| 383 | return ret; |
| 384 | } |
| 385 | |
| 386 | static void wcd9xxx_device_exit(struct wcd9xxx *wcd9xxx) |
| 387 | { |
| 388 | wcd9xxx_irq_exit(wcd9xxx); |
| 389 | wcd9xxx_bring_down(wcd9xxx); |
| 390 | wcd9xxx_free_reset(wcd9xxx); |
| 391 | mutex_destroy(&wcd9xxx->pm_lock); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 392 | pm_qos_remove_request(&wcd9xxx->pm_qos_req); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 393 | mutex_destroy(&wcd9xxx->io_lock); |
| 394 | mutex_destroy(&wcd9xxx->xfer_lock); |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 395 | if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS) |
| 396 | slim_remove_device(wcd9xxx->slim_slave); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 397 | kfree(wcd9xxx); |
| 398 | } |
| 399 | |
| 400 | |
| 401 | #ifdef CONFIG_DEBUG_FS |
| 402 | struct wcd9xxx *debugCodec; |
| 403 | |
| 404 | static struct dentry *debugfs_wcd9xxx_dent; |
| 405 | static struct dentry *debugfs_peek; |
| 406 | static struct dentry *debugfs_poke; |
| 407 | |
| 408 | static unsigned char read_data; |
| 409 | |
| 410 | static int codec_debug_open(struct inode *inode, struct file *file) |
| 411 | { |
| 412 | file->private_data = inode->i_private; |
| 413 | return 0; |
| 414 | } |
| 415 | |
| 416 | static int get_parameters(char *buf, long int *param1, int num_of_par) |
| 417 | { |
| 418 | char *token; |
| 419 | int base, cnt; |
| 420 | |
| 421 | token = strsep(&buf, " "); |
| 422 | |
| 423 | for (cnt = 0; cnt < num_of_par; cnt++) { |
| 424 | if (token != NULL) { |
| 425 | if ((token[1] == 'x') || (token[1] == 'X')) |
| 426 | base = 16; |
| 427 | else |
| 428 | base = 10; |
| 429 | |
| 430 | if (strict_strtoul(token, base, ¶m1[cnt]) != 0) |
| 431 | return -EINVAL; |
| 432 | |
| 433 | token = strsep(&buf, " "); |
| 434 | } else |
| 435 | return -EINVAL; |
| 436 | } |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | static ssize_t codec_debug_read(struct file *file, char __user *ubuf, |
| 441 | size_t count, loff_t *ppos) |
| 442 | { |
| 443 | char lbuf[8]; |
| 444 | |
| 445 | snprintf(lbuf, sizeof(lbuf), "0x%x\n", read_data); |
| 446 | return simple_read_from_buffer(ubuf, count, ppos, lbuf, |
| 447 | strnlen(lbuf, 7)); |
| 448 | } |
| 449 | |
| 450 | |
| 451 | static ssize_t codec_debug_write(struct file *filp, |
| 452 | const char __user *ubuf, size_t cnt, loff_t *ppos) |
| 453 | { |
| 454 | char *access_str = filp->private_data; |
| 455 | char lbuf[32]; |
| 456 | int rc; |
| 457 | long int param[5]; |
| 458 | |
| 459 | if (cnt > sizeof(lbuf) - 1) |
| 460 | return -EINVAL; |
| 461 | |
| 462 | rc = copy_from_user(lbuf, ubuf, cnt); |
| 463 | if (rc) |
| 464 | return -EFAULT; |
| 465 | |
| 466 | lbuf[cnt] = '\0'; |
| 467 | |
| 468 | if (!strncmp(access_str, "poke", 6)) { |
| 469 | /* write */ |
| 470 | rc = get_parameters(lbuf, param, 2); |
| 471 | if ((param[0] <= 0x3FF) && (param[1] <= 0xFF) && |
| 472 | (rc == 0)) |
| 473 | wcd9xxx_interface_reg_write(debugCodec, param[0], |
| 474 | param[1]); |
| 475 | else |
| 476 | rc = -EINVAL; |
| 477 | } else if (!strncmp(access_str, "peek", 6)) { |
| 478 | /* read */ |
| 479 | rc = get_parameters(lbuf, param, 1); |
| 480 | if ((param[0] <= 0x3FF) && (rc == 0)) |
| 481 | read_data = wcd9xxx_interface_reg_read(debugCodec, |
| 482 | param[0]); |
| 483 | else |
| 484 | rc = -EINVAL; |
| 485 | } |
| 486 | |
| 487 | if (rc == 0) |
| 488 | rc = cnt; |
| 489 | else |
| 490 | pr_err("%s: rc = %d\n", __func__, rc); |
| 491 | |
| 492 | return rc; |
| 493 | } |
| 494 | |
| 495 | static const struct file_operations codec_debug_ops = { |
| 496 | .open = codec_debug_open, |
| 497 | .write = codec_debug_write, |
| 498 | .read = codec_debug_read |
| 499 | }; |
| 500 | #endif |
| 501 | |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 502 | static int wcd9xxx_enable_supplies(struct wcd9xxx *wcd9xxx, |
| 503 | struct wcd9xxx_pdata *pdata) |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 504 | { |
| 505 | int ret; |
| 506 | int i; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 507 | wcd9xxx->supplies = kzalloc(sizeof(struct regulator_bulk_data) * |
| 508 | ARRAY_SIZE(pdata->regulator), |
| 509 | GFP_KERNEL); |
| 510 | if (!wcd9xxx->supplies) { |
| 511 | ret = -ENOMEM; |
| 512 | goto err; |
| 513 | } |
| 514 | |
| 515 | for (i = 0; i < ARRAY_SIZE(pdata->regulator); i++) |
| 516 | wcd9xxx->supplies[i].supply = pdata->regulator[i].name; |
| 517 | |
| 518 | ret = regulator_bulk_get(wcd9xxx->dev, ARRAY_SIZE(pdata->regulator), |
| 519 | wcd9xxx->supplies); |
| 520 | if (ret != 0) { |
| 521 | dev_err(wcd9xxx->dev, "Failed to get supplies: err = %d\n", |
| 522 | ret); |
| 523 | goto err_supplies; |
| 524 | } |
| 525 | |
| 526 | for (i = 0; i < ARRAY_SIZE(pdata->regulator); i++) { |
| 527 | ret = regulator_set_voltage(wcd9xxx->supplies[i].consumer, |
| 528 | pdata->regulator[i].min_uV, pdata->regulator[i].max_uV); |
| 529 | if (ret) { |
| 530 | pr_err("%s: Setting regulator voltage failed for " |
| 531 | "regulator %s err = %d\n", __func__, |
| 532 | wcd9xxx->supplies[i].supply, ret); |
| 533 | goto err_get; |
| 534 | } |
| 535 | |
| 536 | ret = regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, |
| 537 | pdata->regulator[i].optimum_uA); |
| 538 | if (ret < 0) { |
| 539 | pr_err("%s: Setting regulator optimum mode failed for " |
| 540 | "regulator %s err = %d\n", __func__, |
| 541 | wcd9xxx->supplies[i].supply, ret); |
| 542 | goto err_get; |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | ret = regulator_bulk_enable(ARRAY_SIZE(pdata->regulator), |
| 547 | wcd9xxx->supplies); |
| 548 | if (ret != 0) { |
| 549 | dev_err(wcd9xxx->dev, "Failed to enable supplies: err = %d\n", |
| 550 | ret); |
| 551 | goto err_configure; |
| 552 | } |
| 553 | return ret; |
| 554 | |
| 555 | err_configure: |
| 556 | for (i = 0; i < ARRAY_SIZE(pdata->regulator); i++) { |
| 557 | regulator_set_voltage(wcd9xxx->supplies[i].consumer, 0, |
| 558 | pdata->regulator[i].max_uV); |
| 559 | regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, 0); |
| 560 | } |
| 561 | err_get: |
| 562 | regulator_bulk_free(ARRAY_SIZE(pdata->regulator), wcd9xxx->supplies); |
| 563 | err_supplies: |
| 564 | kfree(wcd9xxx->supplies); |
| 565 | err: |
| 566 | return ret; |
| 567 | } |
| 568 | |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 569 | static void wcd9xxx_disable_supplies(struct wcd9xxx *wcd9xxx, |
| 570 | struct wcd9xxx_pdata *pdata) |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 571 | { |
| 572 | int i; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 573 | |
| 574 | regulator_bulk_disable(ARRAY_SIZE(pdata->regulator), |
| 575 | wcd9xxx->supplies); |
| 576 | for (i = 0; i < ARRAY_SIZE(pdata->regulator); i++) { |
| 577 | regulator_set_voltage(wcd9xxx->supplies[i].consumer, 0, |
| 578 | pdata->regulator[i].max_uV); |
| 579 | regulator_set_optimum_mode(wcd9xxx->supplies[i].consumer, 0); |
| 580 | } |
| 581 | regulator_bulk_free(ARRAY_SIZE(pdata->regulator), wcd9xxx->supplies); |
| 582 | kfree(wcd9xxx->supplies); |
| 583 | } |
| 584 | |
| 585 | int wcd9xxx_get_intf_type(void) |
| 586 | { |
| 587 | return wcd9xxx_intf; |
| 588 | } |
| 589 | EXPORT_SYMBOL_GPL(wcd9xxx_get_intf_type); |
| 590 | |
| 591 | struct wcd9xxx_i2c *get_i2c_wcd9xxx_device_info(u16 reg) |
| 592 | { |
| 593 | u16 mask = 0x0f00; |
| 594 | int value = 0; |
| 595 | struct wcd9xxx_i2c *wcd9xxx = NULL; |
| 596 | value = ((reg & mask) >> 8) & 0x000f; |
| 597 | switch (value) { |
| 598 | case 0: |
| 599 | wcd9xxx = &wcd9xxx_modules[0]; |
| 600 | break; |
| 601 | case 1: |
| 602 | wcd9xxx = &wcd9xxx_modules[1]; |
| 603 | break; |
| 604 | case 2: |
| 605 | wcd9xxx = &wcd9xxx_modules[2]; |
| 606 | break; |
| 607 | case 3: |
| 608 | wcd9xxx = &wcd9xxx_modules[3]; |
| 609 | break; |
| 610 | default: |
| 611 | break; |
| 612 | } |
| 613 | return wcd9xxx; |
| 614 | } |
| 615 | |
| 616 | int wcd9xxx_i2c_write_device(u16 reg, u8 *value, |
| 617 | u32 bytes) |
| 618 | { |
| 619 | |
| 620 | struct i2c_msg *msg; |
| 621 | int ret = 0; |
| 622 | u8 reg_addr = 0; |
| 623 | u8 data[bytes + 1]; |
| 624 | struct wcd9xxx_i2c *wcd9xxx; |
| 625 | |
| 626 | wcd9xxx = get_i2c_wcd9xxx_device_info(reg); |
| 627 | if (wcd9xxx == NULL || wcd9xxx->client == NULL) { |
| 628 | pr_err("failed to get device info\n"); |
| 629 | return -ENODEV; |
| 630 | } |
| 631 | reg_addr = (u8)reg; |
| 632 | msg = &wcd9xxx->xfer_msg[0]; |
| 633 | msg->addr = wcd9xxx->client->addr; |
| 634 | msg->len = bytes + 1; |
| 635 | msg->flags = 0; |
| 636 | data[0] = reg; |
| 637 | data[1] = *value; |
| 638 | msg->buf = data; |
| 639 | ret = i2c_transfer(wcd9xxx->client->adapter, wcd9xxx->xfer_msg, 1); |
| 640 | /* Try again if the write fails */ |
| 641 | if (ret != 1) { |
| 642 | ret = i2c_transfer(wcd9xxx->client->adapter, |
| 643 | wcd9xxx->xfer_msg, 1); |
| 644 | if (ret != 1) { |
| 645 | pr_err("failed to write the device\n"); |
| 646 | return ret; |
| 647 | } |
| 648 | } |
| 649 | pr_debug("write sucess register = %x val = %x\n", reg, data[1]); |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | |
| 654 | int wcd9xxx_i2c_read_device(unsigned short reg, |
| 655 | int bytes, unsigned char *dest) |
| 656 | { |
| 657 | struct i2c_msg *msg; |
| 658 | int ret = 0; |
| 659 | u8 reg_addr = 0; |
| 660 | struct wcd9xxx_i2c *wcd9xxx; |
| 661 | u8 i = 0; |
| 662 | |
| 663 | wcd9xxx = get_i2c_wcd9xxx_device_info(reg); |
| 664 | if (wcd9xxx == NULL || wcd9xxx->client == NULL) { |
| 665 | pr_err("failed to get device info\n"); |
| 666 | return -ENODEV; |
| 667 | } |
| 668 | for (i = 0; i < bytes; i++) { |
| 669 | reg_addr = (u8)reg++; |
| 670 | msg = &wcd9xxx->xfer_msg[0]; |
| 671 | msg->addr = wcd9xxx->client->addr; |
| 672 | msg->len = 1; |
| 673 | msg->flags = 0; |
| 674 | msg->buf = ®_addr; |
| 675 | |
| 676 | msg = &wcd9xxx->xfer_msg[1]; |
| 677 | msg->addr = wcd9xxx->client->addr; |
| 678 | msg->len = 1; |
| 679 | msg->flags = I2C_M_RD; |
| 680 | msg->buf = dest++; |
| 681 | ret = i2c_transfer(wcd9xxx->client->adapter, |
| 682 | wcd9xxx->xfer_msg, 2); |
| 683 | |
| 684 | /* Try again if read fails first time */ |
| 685 | if (ret != 2) { |
| 686 | ret = i2c_transfer(wcd9xxx->client->adapter, |
| 687 | wcd9xxx->xfer_msg, 2); |
| 688 | if (ret != 2) { |
| 689 | pr_err("failed to read wcd9xxx register\n"); |
| 690 | return ret; |
| 691 | } |
| 692 | } |
| 693 | } |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | int wcd9xxx_i2c_read(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 698 | int bytes, void *dest, bool interface_reg) |
| 699 | { |
| 700 | return wcd9xxx_i2c_read_device(reg, bytes, dest); |
| 701 | } |
| 702 | |
| 703 | int wcd9xxx_i2c_write(struct wcd9xxx *wcd9xxx, unsigned short reg, |
| 704 | int bytes, void *src, bool interface_reg) |
| 705 | { |
| 706 | return wcd9xxx_i2c_write_device(reg, src, bytes); |
| 707 | } |
| 708 | |
| 709 | static int __devinit wcd9xxx_i2c_probe(struct i2c_client *client, |
| 710 | const struct i2c_device_id *id) |
| 711 | { |
| 712 | struct wcd9xxx *wcd9xxx; |
| 713 | struct wcd9xxx_pdata *pdata = client->dev.platform_data; |
| 714 | int val = 0; |
| 715 | int ret = 0; |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 716 | int i2c_mode = 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 717 | static int device_id; |
| 718 | |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 719 | pr_info("%s\n", __func__); |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 720 | if (wcd9xxx_intf == WCD9XXX_INTERFACE_TYPE_SLIMBUS) { |
| 721 | pr_info("tabla card is already detected in slimbus mode\n"); |
| 722 | return -ENODEV; |
| 723 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 724 | if (device_id > 0) { |
| 725 | wcd9xxx_modules[device_id++].client = client; |
| 726 | pr_info("probe for other slaves devices of tabla\n"); |
| 727 | return ret; |
| 728 | } |
| 729 | |
| 730 | wcd9xxx = kzalloc(sizeof(struct wcd9xxx), GFP_KERNEL); |
| 731 | if (wcd9xxx == NULL) { |
| 732 | pr_err("%s: error, allocation failed\n", __func__); |
| 733 | ret = -ENOMEM; |
| 734 | goto fail; |
| 735 | } |
| 736 | |
| 737 | if (!pdata) { |
| 738 | dev_dbg(&client->dev, "no platform data?\n"); |
| 739 | ret = -EINVAL; |
| 740 | goto fail; |
| 741 | } |
| 742 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { |
| 743 | dev_dbg(&client->dev, "can't talk I2C?\n"); |
| 744 | ret = -EIO; |
| 745 | goto fail; |
| 746 | } |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 747 | dev_set_drvdata(&client->dev, wcd9xxx); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 748 | wcd9xxx->dev = &client->dev; |
| 749 | wcd9xxx->reset_gpio = pdata->reset_gpio; |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 750 | ret = wcd9xxx_enable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 751 | if (ret) { |
| 752 | pr_err("%s: Fail to enable Codec supplies\n", __func__); |
| 753 | goto err_codec; |
| 754 | } |
| 755 | |
| 756 | usleep_range(5, 5); |
| 757 | ret = wcd9xxx_reset(wcd9xxx); |
| 758 | if (ret) { |
| 759 | pr_err("%s: Resetting Codec failed\n", __func__); |
| 760 | goto err_supplies; |
| 761 | } |
| 762 | wcd9xxx_modules[device_id++].client = client; |
| 763 | |
| 764 | wcd9xxx->read_dev = wcd9xxx_i2c_read; |
| 765 | wcd9xxx->write_dev = wcd9xxx_i2c_write; |
| 766 | wcd9xxx->irq = pdata->irq; |
| 767 | wcd9xxx->irq_base = pdata->irq_base; |
| 768 | |
| 769 | /*read the tabla status before initializing the device type*/ |
| 770 | ret = wcd9xxx_read(wcd9xxx, WCD9XXX_A_CHIP_STATUS, 1, &val, 0); |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 771 | if (!strncmp(wcd9xxx_modules[0].client->name, "sitar", 5)) |
| 772 | i2c_mode = SITAR_I2C_MODE; |
| 773 | else if (!strncmp(wcd9xxx_modules[0].client->name, "tabla", 5)) |
| 774 | i2c_mode = TABLA_I2C_MODE; |
| 775 | |
| 776 | if ((ret < 0) || (val != i2c_mode)) |
| 777 | pr_err("failed to read the wcd9xxx status ret = %d\n", ret); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 778 | |
| 779 | ret = wcd9xxx_device_init(wcd9xxx, wcd9xxx->irq); |
| 780 | if (ret) { |
| 781 | pr_err("%s: error, initializing device failed\n", __func__); |
| 782 | goto err_device_init; |
| 783 | } |
| 784 | wcd9xxx_intf = WCD9XXX_INTERFACE_TYPE_I2C; |
| 785 | |
| 786 | return ret; |
| 787 | err_device_init: |
| 788 | wcd9xxx_free_reset(wcd9xxx); |
| 789 | err_supplies: |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 790 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 791 | err_codec: |
| 792 | kfree(wcd9xxx); |
| 793 | fail: |
| 794 | return ret; |
| 795 | } |
| 796 | |
| 797 | static int __devexit wcd9xxx_i2c_remove(struct i2c_client *client) |
| 798 | { |
| 799 | struct wcd9xxx *wcd9xxx; |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 800 | struct wcd9xxx_pdata *pdata = client->dev.platform_data; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 801 | pr_debug("exit\n"); |
| 802 | wcd9xxx = dev_get_drvdata(&client->dev); |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 803 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 804 | wcd9xxx_device_exit(wcd9xxx); |
| 805 | return 0; |
| 806 | } |
| 807 | |
| 808 | static int wcd9xxx_slim_probe(struct slim_device *slim) |
| 809 | { |
| 810 | struct wcd9xxx *wcd9xxx; |
| 811 | struct wcd9xxx_pdata *pdata; |
| 812 | int ret = 0; |
| 813 | int sgla_retry_cnt; |
| 814 | |
| 815 | dev_info(&slim->dev, "Initialized slim device %s\n", slim->name); |
| 816 | pdata = slim->dev.platform_data; |
| 817 | |
| 818 | if (!pdata) { |
| 819 | dev_err(&slim->dev, "Error, no platform data\n"); |
| 820 | ret = -EINVAL; |
| 821 | goto err; |
| 822 | } |
| 823 | |
| 824 | wcd9xxx = kzalloc(sizeof(struct wcd9xxx), GFP_KERNEL); |
| 825 | if (wcd9xxx == NULL) { |
| 826 | pr_err("%s: error, allocation failed\n", __func__); |
| 827 | ret = -ENOMEM; |
| 828 | goto err; |
| 829 | } |
| 830 | if (!slim->ctrl) { |
| 831 | pr_err("Error, no SLIMBUS control data\n"); |
| 832 | ret = -EINVAL; |
| 833 | goto err_codec; |
| 834 | } |
| 835 | wcd9xxx->slim = slim; |
| 836 | slim_set_clientdata(slim, wcd9xxx); |
| 837 | wcd9xxx->reset_gpio = pdata->reset_gpio; |
| 838 | wcd9xxx->dev = &slim->dev; |
| 839 | |
Venkat Sudhir | db7aa2b | 2012-05-15 15:06:14 -0700 | [diff] [blame] | 840 | ret = wcd9xxx_enable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 841 | if (ret) |
| 842 | goto err_codec; |
| 843 | usleep_range(5, 5); |
| 844 | |
| 845 | ret = wcd9xxx_reset(wcd9xxx); |
| 846 | if (ret) { |
| 847 | pr_err("%s: Resetting Codec failed\n", __func__); |
| 848 | goto err_supplies; |
| 849 | } |
| 850 | |
| 851 | ret = slim_get_logical_addr(wcd9xxx->slim, wcd9xxx->slim->e_addr, |
| 852 | ARRAY_SIZE(wcd9xxx->slim->e_addr), &wcd9xxx->slim->laddr); |
| 853 | if (ret) { |
| 854 | pr_err("fail to get slimbus logical address %d\n", ret); |
| 855 | goto err_reset; |
| 856 | } |
| 857 | wcd9xxx->read_dev = wcd9xxx_slim_read_device; |
| 858 | wcd9xxx->write_dev = wcd9xxx_slim_write_device; |
| 859 | wcd9xxx->irq = pdata->irq; |
| 860 | wcd9xxx->irq_base = pdata->irq_base; |
| 861 | wcd9xxx_pgd_la = wcd9xxx->slim->laddr; |
| 862 | |
| 863 | if (pdata->num_irqs < TABLA_NUM_IRQS) { |
| 864 | pr_err("%s: Error, not enough interrupt lines allocated\n", |
| 865 | __func__); |
| 866 | goto err_reset; |
| 867 | } |
| 868 | |
| 869 | wcd9xxx->slim_slave = &pdata->slimbus_slave_device; |
| 870 | |
| 871 | ret = slim_add_device(slim->ctrl, wcd9xxx->slim_slave); |
| 872 | if (ret) { |
| 873 | pr_err("%s: error, adding SLIMBUS device failed\n", __func__); |
| 874 | goto err_reset; |
| 875 | } |
| 876 | |
| 877 | sgla_retry_cnt = 0; |
| 878 | |
| 879 | while (1) { |
| 880 | ret = slim_get_logical_addr(wcd9xxx->slim_slave, |
| 881 | wcd9xxx->slim_slave->e_addr, |
| 882 | ARRAY_SIZE(wcd9xxx->slim_slave->e_addr), |
| 883 | &wcd9xxx->slim_slave->laddr); |
| 884 | if (ret) { |
| 885 | if (sgla_retry_cnt++ < WCD9XXX_SLIM_GLA_MAX_RETRIES) { |
| 886 | /* Give SLIMBUS slave time to report present |
| 887 | and be ready. |
| 888 | */ |
| 889 | usleep_range(1000, 1000); |
| 890 | pr_debug("%s: retry slim_get_logical_addr()\n", |
| 891 | __func__); |
| 892 | continue; |
| 893 | } |
| 894 | pr_err("fail to get slimbus slave logical address" |
| 895 | " %d\n", ret); |
| 896 | goto err_slim_add; |
| 897 | } |
| 898 | break; |
| 899 | } |
| 900 | wcd9xxx_inf_la = wcd9xxx->slim_slave->laddr; |
| 901 | wcd9xxx_intf = WCD9XXX_INTERFACE_TYPE_SLIMBUS; |
| 902 | |
| 903 | ret = wcd9xxx_device_init(wcd9xxx, wcd9xxx->irq); |
| 904 | if (ret) { |
| 905 | pr_err("%s: error, initializing device failed\n", __func__); |
| 906 | goto err_slim_add; |
| 907 | } |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 908 | wcd9xxx_init_slimslave(wcd9xxx, wcd9xxx_pgd_la); |
| 909 | #ifdef CONFIG_DEBUG_FS |
| 910 | debugCodec = wcd9xxx; |
| 911 | |
| 912 | debugfs_wcd9xxx_dent = debugfs_create_dir |
| 913 | ("wcd9310_slimbus_interface_device", 0); |
| 914 | if (!IS_ERR(debugfs_wcd9xxx_dent)) { |
| 915 | debugfs_peek = debugfs_create_file("peek", |
| 916 | S_IFREG | S_IRUGO, debugfs_wcd9xxx_dent, |
| 917 | (void *) "peek", &codec_debug_ops); |
| 918 | |
| 919 | debugfs_poke = debugfs_create_file("poke", |
| 920 | S_IFREG | S_IRUGO, debugfs_wcd9xxx_dent, |
| 921 | (void *) "poke", &codec_debug_ops); |
| 922 | } |
| 923 | #endif |
| 924 | |
| 925 | return ret; |
| 926 | |
| 927 | err_slim_add: |
| 928 | slim_remove_device(wcd9xxx->slim_slave); |
| 929 | err_reset: |
| 930 | wcd9xxx_free_reset(wcd9xxx); |
| 931 | err_supplies: |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 932 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 933 | err_codec: |
| 934 | kfree(wcd9xxx); |
| 935 | err: |
| 936 | return ret; |
| 937 | } |
| 938 | static int wcd9xxx_slim_remove(struct slim_device *pdev) |
| 939 | { |
| 940 | struct wcd9xxx *wcd9xxx; |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 941 | struct wcd9xxx_pdata *pdata = pdev->dev.platform_data; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 942 | |
| 943 | #ifdef CONFIG_DEBUG_FS |
| 944 | debugfs_remove(debugfs_peek); |
| 945 | debugfs_remove(debugfs_poke); |
| 946 | debugfs_remove(debugfs_wcd9xxx_dent); |
| 947 | #endif |
| 948 | wcd9xxx = slim_get_devicedata(pdev); |
| 949 | wcd9xxx_deinit_slimslave(wcd9xxx); |
| 950 | slim_remove_device(wcd9xxx->slim_slave); |
Venkat Sudhir | 4920386 | 2012-05-21 14:29:13 -0700 | [diff] [blame] | 951 | wcd9xxx_disable_supplies(wcd9xxx, pdata); |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 952 | wcd9xxx_device_exit(wcd9xxx); |
| 953 | return 0; |
| 954 | } |
| 955 | |
| 956 | static int wcd9xxx_resume(struct wcd9xxx *wcd9xxx) |
| 957 | { |
| 958 | int ret = 0; |
| 959 | |
| 960 | pr_debug("%s: enter\n", __func__); |
| 961 | mutex_lock(&wcd9xxx->pm_lock); |
| 962 | if (wcd9xxx->pm_state == WCD9XXX_PM_ASLEEP) { |
| 963 | pr_debug("%s: resuming system, state %d, wlock %d\n", __func__, |
| 964 | wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 965 | wcd9xxx->pm_state = WCD9XXX_PM_SLEEPABLE; |
| 966 | } else { |
| 967 | pr_warn("%s: system is already awake, state %d wlock %d\n", |
| 968 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 969 | } |
| 970 | mutex_unlock(&wcd9xxx->pm_lock); |
| 971 | wake_up_all(&wcd9xxx->pm_wq); |
| 972 | |
| 973 | return ret; |
| 974 | } |
| 975 | |
| 976 | static int wcd9xxx_slim_resume(struct slim_device *sldev) |
| 977 | { |
| 978 | struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev); |
| 979 | return wcd9xxx_resume(wcd9xxx); |
| 980 | } |
| 981 | |
| 982 | static int wcd9xxx_i2c_resume(struct i2c_client *i2cdev) |
| 983 | { |
| 984 | struct wcd9xxx *wcd9xxx = dev_get_drvdata(&i2cdev->dev); |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 985 | if (wcd9xxx) |
| 986 | return wcd9xxx_resume(wcd9xxx); |
| 987 | else |
| 988 | return 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | static int wcd9xxx_suspend(struct wcd9xxx *wcd9xxx, pm_message_t pmesg) |
| 992 | { |
| 993 | int ret = 0; |
| 994 | |
| 995 | pr_debug("%s: enter\n", __func__); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 996 | /* |
| 997 | * pm_qos_update_request() can be called after this suspend chain call |
| 998 | * started. thus suspend can be called while lock is being held |
| 999 | */ |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1000 | mutex_lock(&wcd9xxx->pm_lock); |
| 1001 | if (wcd9xxx->pm_state == WCD9XXX_PM_SLEEPABLE) { |
| 1002 | pr_debug("%s: suspending system, state %d, wlock %d\n", |
| 1003 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1004 | wcd9xxx->pm_state = WCD9XXX_PM_ASLEEP; |
| 1005 | } else if (wcd9xxx->pm_state == WCD9XXX_PM_AWAKE) { |
| 1006 | /* unlock to wait for pm_state == WCD9XXX_PM_SLEEPABLE |
| 1007 | * then set to WCD9XXX_PM_ASLEEP */ |
| 1008 | pr_debug("%s: waiting to suspend system, state %d, wlock %d\n", |
| 1009 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1010 | mutex_unlock(&wcd9xxx->pm_lock); |
| 1011 | if (!(wait_event_timeout(wcd9xxx->pm_wq, |
| 1012 | wcd9xxx_pm_cmpxchg(wcd9xxx, |
| 1013 | WCD9XXX_PM_SLEEPABLE, |
| 1014 | WCD9XXX_PM_ASLEEP) == |
| 1015 | WCD9XXX_PM_SLEEPABLE, |
| 1016 | HZ))) { |
| 1017 | pr_debug("%s: suspend failed state %d, wlock %d\n", |
| 1018 | __func__, wcd9xxx->pm_state, |
| 1019 | wcd9xxx->wlock_holders); |
| 1020 | ret = -EBUSY; |
| 1021 | } else { |
| 1022 | pr_debug("%s: done, state %d, wlock %d\n", __func__, |
| 1023 | wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1024 | } |
| 1025 | mutex_lock(&wcd9xxx->pm_lock); |
| 1026 | } else if (wcd9xxx->pm_state == WCD9XXX_PM_ASLEEP) { |
| 1027 | pr_warn("%s: system is already suspended, state %d, wlock %dn", |
| 1028 | __func__, wcd9xxx->pm_state, wcd9xxx->wlock_holders); |
| 1029 | } |
| 1030 | mutex_unlock(&wcd9xxx->pm_lock); |
| 1031 | |
| 1032 | return ret; |
| 1033 | } |
| 1034 | |
| 1035 | static int wcd9xxx_slim_suspend(struct slim_device *sldev, pm_message_t pmesg) |
| 1036 | { |
| 1037 | struct wcd9xxx *wcd9xxx = slim_get_devicedata(sldev); |
| 1038 | return wcd9xxx_suspend(wcd9xxx, pmesg); |
| 1039 | } |
| 1040 | |
| 1041 | static int wcd9xxx_i2c_suspend(struct i2c_client *i2cdev, pm_message_t pmesg) |
| 1042 | { |
| 1043 | struct wcd9xxx *wcd9xxx = dev_get_drvdata(&i2cdev->dev); |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1044 | if (wcd9xxx) |
| 1045 | return wcd9xxx_suspend(wcd9xxx, pmesg); |
| 1046 | else |
| 1047 | return 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1048 | } |
| 1049 | |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1050 | static const struct slim_device_id sitar_slimtest_id[] = { |
| 1051 | {"sitar-slim", 0}, |
| 1052 | {} |
| 1053 | }; |
| 1054 | static struct slim_driver sitar_slim_driver = { |
| 1055 | .driver = { |
| 1056 | .name = "sitar-slim", |
| 1057 | .owner = THIS_MODULE, |
| 1058 | }, |
| 1059 | .probe = wcd9xxx_slim_probe, |
| 1060 | .remove = wcd9xxx_slim_remove, |
| 1061 | .id_table = sitar_slimtest_id, |
| 1062 | .resume = wcd9xxx_slim_resume, |
| 1063 | .suspend = wcd9xxx_slim_suspend, |
| 1064 | }; |
| 1065 | |
Bhalchandra Gajare | 83c81f6 | 2012-05-18 16:09:05 -0700 | [diff] [blame] | 1066 | static const struct slim_device_id sitar1p1_slimtest_id[] = { |
| 1067 | {"sitar1p1-slim", 0}, |
| 1068 | {} |
| 1069 | }; |
| 1070 | static struct slim_driver sitar1p1_slim_driver = { |
| 1071 | .driver = { |
| 1072 | .name = "sitar1p1-slim", |
| 1073 | .owner = THIS_MODULE, |
| 1074 | }, |
| 1075 | .probe = wcd9xxx_slim_probe, |
| 1076 | .remove = wcd9xxx_slim_remove, |
| 1077 | .id_table = sitar1p1_slimtest_id, |
| 1078 | .resume = wcd9xxx_slim_resume, |
| 1079 | .suspend = wcd9xxx_slim_suspend, |
| 1080 | }; |
| 1081 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1082 | static const struct slim_device_id slimtest_id[] = { |
| 1083 | {"tabla-slim", 0}, |
| 1084 | {} |
| 1085 | }; |
| 1086 | |
| 1087 | static struct slim_driver tabla_slim_driver = { |
| 1088 | .driver = { |
| 1089 | .name = "tabla-slim", |
| 1090 | .owner = THIS_MODULE, |
| 1091 | }, |
| 1092 | .probe = wcd9xxx_slim_probe, |
| 1093 | .remove = wcd9xxx_slim_remove, |
| 1094 | .id_table = slimtest_id, |
| 1095 | .resume = wcd9xxx_slim_resume, |
| 1096 | .suspend = wcd9xxx_slim_suspend, |
| 1097 | }; |
| 1098 | |
| 1099 | static const struct slim_device_id slimtest2x_id[] = { |
| 1100 | {"tabla2x-slim", 0}, |
| 1101 | {} |
| 1102 | }; |
| 1103 | |
| 1104 | static struct slim_driver tabla2x_slim_driver = { |
| 1105 | .driver = { |
| 1106 | .name = "tabla2x-slim", |
| 1107 | .owner = THIS_MODULE, |
| 1108 | }, |
| 1109 | .probe = wcd9xxx_slim_probe, |
| 1110 | .remove = wcd9xxx_slim_remove, |
| 1111 | .id_table = slimtest2x_id, |
| 1112 | .resume = wcd9xxx_slim_resume, |
| 1113 | .suspend = wcd9xxx_slim_suspend, |
| 1114 | }; |
| 1115 | |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 1116 | #define WCD9XXX_I2C_TOP_LEVEL 0 |
| 1117 | #define WCD9XXX_I2C_ANALOG 1 |
| 1118 | #define WCD9XXX_I2C_DIGITAL_1 2 |
| 1119 | #define WCD9XXX_I2C_DIGITAL_2 3 |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1120 | |
| 1121 | static struct i2c_device_id tabla_id_table[] = { |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 1122 | {"tabla top level", WCD9XXX_I2C_TOP_LEVEL}, |
| 1123 | {"tabla analog", WCD9XXX_I2C_ANALOG}, |
| 1124 | {"tabla digital1", WCD9XXX_I2C_DIGITAL_1}, |
| 1125 | {"tabla digital2", WCD9XXX_I2C_DIGITAL_2}, |
| 1126 | {} |
| 1127 | }; |
| 1128 | MODULE_DEVICE_TABLE(i2c, tabla_id_table); |
| 1129 | |
| 1130 | static struct i2c_device_id sitar_id_table[] = { |
| 1131 | {"sitar top level", WCD9XXX_I2C_TOP_LEVEL}, |
| 1132 | {"sitar analog", WCD9XXX_I2C_ANALOG}, |
| 1133 | {"sitar digital1", WCD9XXX_I2C_DIGITAL_1}, |
| 1134 | {"sitar digital2", WCD9XXX_I2C_DIGITAL_2}, |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1135 | {} |
| 1136 | }; |
| 1137 | MODULE_DEVICE_TABLE(i2c, tabla_id_table); |
| 1138 | |
| 1139 | static struct i2c_driver tabla_i2c_driver = { |
| 1140 | .driver = { |
| 1141 | .owner = THIS_MODULE, |
| 1142 | .name = "tabla-i2c-core", |
| 1143 | }, |
| 1144 | .id_table = tabla_id_table, |
| 1145 | .probe = wcd9xxx_i2c_probe, |
| 1146 | .remove = __devexit_p(wcd9xxx_i2c_remove), |
| 1147 | .resume = wcd9xxx_i2c_resume, |
| 1148 | .suspend = wcd9xxx_i2c_suspend, |
| 1149 | }; |
| 1150 | |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 1151 | static struct i2c_driver sitar_i2c_driver = { |
| 1152 | .driver = { |
| 1153 | .owner = THIS_MODULE, |
| 1154 | .name = "sitar-i2c-core", |
| 1155 | }, |
| 1156 | .id_table = sitar_id_table, |
| 1157 | .probe = wcd9xxx_i2c_probe, |
| 1158 | .remove = __devexit_p(wcd9xxx_i2c_remove), |
| 1159 | .resume = wcd9xxx_i2c_resume, |
| 1160 | .suspend = wcd9xxx_i2c_suspend, |
| 1161 | }; |
| 1162 | |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1163 | static int __init wcd9xxx_init(void) |
| 1164 | { |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 1165 | int ret1, ret2, ret3, ret4, ret5, ret6; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1166 | |
| 1167 | ret1 = slim_driver_register(&tabla_slim_driver); |
| 1168 | if (ret1 != 0) |
| 1169 | pr_err("Failed to register tabla SB driver: %d\n", ret1); |
| 1170 | |
| 1171 | ret2 = slim_driver_register(&tabla2x_slim_driver); |
| 1172 | if (ret2 != 0) |
| 1173 | pr_err("Failed to register tabla2x SB driver: %d\n", ret2); |
| 1174 | |
| 1175 | ret3 = i2c_add_driver(&tabla_i2c_driver); |
| 1176 | if (ret3 != 0) |
| 1177 | pr_err("failed to add the I2C driver\n"); |
| 1178 | |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1179 | ret4 = slim_driver_register(&sitar_slim_driver); |
Bhalchandra Gajare | 83c81f6 | 2012-05-18 16:09:05 -0700 | [diff] [blame] | 1180 | if (ret4 != 0) |
Asish Bhattacharya | b86c347 | 2012-02-15 08:31:52 +0530 | [diff] [blame] | 1181 | pr_err("Failed to register sitar SB driver: %d\n", ret4); |
| 1182 | |
Bhalchandra Gajare | 83c81f6 | 2012-05-18 16:09:05 -0700 | [diff] [blame] | 1183 | ret5 = slim_driver_register(&sitar1p1_slim_driver); |
| 1184 | if (ret5 != 0) |
| 1185 | pr_err("Failed to register sitar SB driver: %d\n", ret5); |
| 1186 | |
Asish Bhattacharya | 2b709d4 | 2011-11-15 10:39:23 +0530 | [diff] [blame^] | 1187 | ret6 = i2c_add_driver(&sitar_i2c_driver); |
| 1188 | if (ret6 != 0) |
| 1189 | pr_err("failed to add the I2C driver\n"); |
| 1190 | |
| 1191 | return (ret1 && ret2 && ret3 && ret4 && ret5 && ret6) ? -1 : 0; |
Asish Bhattacharya | b1aeae2 | 2012-02-15 08:29:28 +0530 | [diff] [blame] | 1192 | } |
| 1193 | module_init(wcd9xxx_init); |
| 1194 | |
| 1195 | static void __exit wcd9xxx_exit(void) |
| 1196 | { |
| 1197 | } |
| 1198 | module_exit(wcd9xxx_exit); |
| 1199 | |
| 1200 | MODULE_DESCRIPTION("Codec core driver"); |
| 1201 | MODULE_VERSION("1.0"); |
| 1202 | MODULE_LICENSE("GPL v2"); |