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| 1 /* | 1 /* |
| 2 * cx20442.c -- CX20442 ALSA Soc Audio driver | 2 * cx20442.c -- CX20442 ALSA Soc Audio driver |
| 3 * | 3 * |
| 4 * Copyright 2009 Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> | 4 * Copyright 2009 Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> |
| 5 * | 5 * |
| 6 * Initially based on sound/soc/codecs/wm8400.c | 6 * Initially based on sound/soc/codecs/wm8400.c |
| 7 * Copyright 2008, 2009 Wolfson Microelectronics PLC. | 7 * Copyright 2008, 2009 Wolfson Microelectronics PLC. |
| 8 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | 8 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| 9 * | 9 * |
| 10 * This program is free software; you can redistribute it and/or modify it | 10 * This program is free software; you can redistribute it and/or modify it |
| 11 * under the terms of the GNU General Public License as published by the | 11 * under the terms of the GNU General Public License as published by the |
| 12 * Free Software Foundation; either version 2 of the License, or (at your | 12 * Free Software Foundation; either version 2 of the License, or (at your |
| 13 * option) any later version. | 13 * option) any later version. |
| 14 */ | 14 */ |
| 15 | 15 |
| 16 #include <linux/tty.h> | 16 #include <linux/tty.h> |
| 17 #include <linux/slab.h> | 17 #include <linux/slab.h> |
| 18 | 18 |
| 19 #include <sound/core.h> | 19 #include <sound/core.h> |
| 20 #include <sound/initval.h> | 20 #include <sound/initval.h> |
| 21 #include <sound/soc-dapm.h> | 21 #include <sound/soc.h> |
| 22 | 22 |
| 23 #include "cx20442.h" | 23 #include "cx20442.h" |
| 24 | 24 |
| 25 | 25 |
| 26 struct cx20442_priv { | 26 struct cx20442_priv { |
| 27 enum snd_soc_control_type control_type; | 27 enum snd_soc_control_type control_type; |
| 28 void *control_data; | 28 void *control_data; |
| 29 u8 reg_cache[1]; | |
| 30 }; | 29 }; |
| 31 | 30 |
| 32 #define CX20442_PM 0x0 | 31 #define CX20442_PM 0x0 |
| 33 | 32 |
| 34 #define CX20442_TELIN 0 | 33 #define CX20442_TELIN 0 |
| 35 #define CX20442_TELOUT 1 | 34 #define CX20442_TELOUT 1 |
| 36 #define CX20442_MIC 2 | 35 #define CX20442_MIC 2 |
| 37 #define CX20442_SPKOUT 3 | 36 #define CX20442_SPKOUT 3 |
| 38 #define CX20442_AGC 4 | 37 #define CX20442_AGC 4 |
| 39 | 38 |
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| 82 {"Input Mixer", NULL, "MIC Bias"}, | 81 {"Input Mixer", NULL, "MIC Bias"}, |
| 83 | 82 |
| 84 {"TELIN Bias", NULL, "TELIN"}, | 83 {"TELIN Bias", NULL, "TELIN"}, |
| 85 {"Input Mixer", NULL, "TELIN Bias"}, | 84 {"Input Mixer", NULL, "TELIN Bias"}, |
| 86 | 85 |
| 87 {"ADC", NULL, "Input Mixer"}, | 86 {"ADC", NULL, "Input Mixer"}, |
| 88 }; | 87 }; |
| 89 | 88 |
| 90 static int cx20442_add_widgets(struct snd_soc_codec *codec) | 89 static int cx20442_add_widgets(struct snd_soc_codec *codec) |
| 91 { | 90 { |
| 92 » snd_soc_dapm_new_controls(codec, cx20442_dapm_widgets, | 91 » struct snd_soc_dapm_context *dapm = &codec->dapm; |
| 92 |
| 93 » snd_soc_dapm_new_controls(dapm, cx20442_dapm_widgets, |
| 93 ARRAY_SIZE(cx20442_dapm_widgets)); | 94 ARRAY_SIZE(cx20442_dapm_widgets)); |
| 94 | 95 » snd_soc_dapm_add_routes(dapm, cx20442_audio_map, |
| 95 » snd_soc_dapm_add_routes(codec, cx20442_audio_map, | |
| 96 ARRAY_SIZE(cx20442_audio_map)); | 96 ARRAY_SIZE(cx20442_audio_map)); |
| 97 | 97 |
| 98 return 0; | 98 return 0; |
| 99 } | 99 } |
| 100 | 100 |
| 101 static unsigned int cx20442_read_reg_cache(struct snd_soc_codec *codec, | 101 static unsigned int cx20442_read_reg_cache(struct snd_soc_codec *codec, |
| 102 unsigned int reg) | 102 unsigned int reg) |
| 103 { | 103 { |
| 104 u8 *reg_cache = codec->reg_cache; | 104 u8 *reg_cache = codec->reg_cache; |
| 105 | 105 |
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| 256 tty->disc_data = NULL; | 256 tty->disc_data = NULL; |
| 257 | 257 |
| 258 if (!codec) | 258 if (!codec) |
| 259 return; | 259 return; |
| 260 | 260 |
| 261 cx20442 = snd_soc_codec_get_drvdata(codec); | 261 cx20442 = snd_soc_codec_get_drvdata(codec); |
| 262 | 262 |
| 263 /* Prevent the codec driver from further accessing the modem */ | 263 /* Prevent the codec driver from further accessing the modem */ |
| 264 codec->hw_write = NULL; | 264 codec->hw_write = NULL; |
| 265 cx20442->control_data = NULL; | 265 cx20442->control_data = NULL; |
| 266 » codec->pop_time = 0; | 266 » codec->card->pop_time = 0; |
| 267 } | 267 } |
| 268 | 268 |
| 269 /* Line discipline .hangup() */ | 269 /* Line discipline .hangup() */ |
| 270 static int v253_hangup(struct tty_struct *tty) | 270 static int v253_hangup(struct tty_struct *tty) |
| 271 { | 271 { |
| 272 v253_close(tty); | 272 v253_close(tty); |
| 273 return 0; | 273 return 0; |
| 274 } | 274 } |
| 275 | 275 |
| 276 /* Line discipline .receive_buf() */ | 276 /* Line discipline .receive_buf() */ |
| 277 static void v253_receive(struct tty_struct *tty, | 277 static void v253_receive(struct tty_struct *tty, |
| 278 const unsigned char *cp, char *fp, int count) | 278 const unsigned char *cp, char *fp, int count) |
| 279 { | 279 { |
| 280 struct snd_soc_codec *codec = tty->disc_data; | 280 struct snd_soc_codec *codec = tty->disc_data; |
| 281 struct cx20442_priv *cx20442; | 281 struct cx20442_priv *cx20442; |
| 282 | 282 |
| 283 if (!codec) | 283 if (!codec) |
| 284 return; | 284 return; |
| 285 | 285 |
| 286 cx20442 = snd_soc_codec_get_drvdata(codec); | 286 cx20442 = snd_soc_codec_get_drvdata(codec); |
| 287 | 287 |
| 288 if (!cx20442->control_data) { | 288 if (!cx20442->control_data) { |
| 289 /* First modem response, complete setup procedure */ | 289 /* First modem response, complete setup procedure */ |
| 290 | 290 |
| 291 /* Set up codec driver access to modem controls */ | 291 /* Set up codec driver access to modem controls */ |
| 292 cx20442->control_data = tty; | 292 cx20442->control_data = tty; |
| 293 codec->hw_write = (hw_write_t)tty->ops->write; | 293 codec->hw_write = (hw_write_t)tty->ops->write; |
| 294 » » codec->pop_time = 1; | 294 » » codec->card->pop_time = 1; |
| 295 } | 295 } |
| 296 } | 296 } |
| 297 | 297 |
| 298 /* Line discipline .write_wakeup() */ | 298 /* Line discipline .write_wakeup() */ |
| 299 static void v253_wakeup(struct tty_struct *tty) | 299 static void v253_wakeup(struct tty_struct *tty) |
| 300 { | 300 { |
| 301 } | 301 } |
| 302 | 302 |
| 303 struct tty_ldisc_ops v253_ops = { | 303 struct tty_ldisc_ops v253_ops = { |
| 304 .magic = TTY_LDISC_MAGIC, | 304 .magic = TTY_LDISC_MAGIC, |
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| 341 | 341 |
| 342 cx20442 = kzalloc(sizeof(struct cx20442_priv), GFP_KERNEL); | 342 cx20442 = kzalloc(sizeof(struct cx20442_priv), GFP_KERNEL); |
| 343 if (cx20442 == NULL) | 343 if (cx20442 == NULL) |
| 344 return -ENOMEM; | 344 return -ENOMEM; |
| 345 snd_soc_codec_set_drvdata(codec, cx20442); | 345 snd_soc_codec_set_drvdata(codec, cx20442); |
| 346 | 346 |
| 347 cx20442_add_widgets(codec); | 347 cx20442_add_widgets(codec); |
| 348 | 348 |
| 349 cx20442->control_data = NULL; | 349 cx20442->control_data = NULL; |
| 350 codec->hw_write = NULL; | 350 codec->hw_write = NULL; |
| 351 » codec->pop_time = 0; | 351 » codec->card->pop_time = 0; |
| 352 | 352 |
| 353 return 0; | 353 return 0; |
| 354 } | 354 } |
| 355 | 355 |
| 356 /* power down chip */ | 356 /* power down chip */ |
| 357 static int cx20442_codec_remove(struct snd_soc_codec *codec) | 357 static int cx20442_codec_remove(struct snd_soc_codec *codec) |
| 358 { | 358 { |
| 359 struct cx20442_priv *cx20442 = snd_soc_codec_get_drvdata(codec); | 359 struct cx20442_priv *cx20442 = snd_soc_codec_get_drvdata(codec); |
| 360 | 360 |
| 361 if (cx20442->control_data) { | 361 if (cx20442->control_data) { |
| 362 struct tty_struct *tty = cx20442->control_data; | 362 struct tty_struct *tty = cx20442->control_data; |
| 363 tty_hangup(tty); | 363 tty_hangup(tty); |
| 364 } | 364 } |
| 365 | 365 |
| 366 kfree(cx20442); | 366 kfree(cx20442); |
| 367 return 0; | 367 return 0; |
| 368 } | 368 } |
| 369 | 369 |
| 370 static const u8 cx20442_reg; |
| 371 |
| 370 static struct snd_soc_codec_driver cx20442_codec_dev = { | 372 static struct snd_soc_codec_driver cx20442_codec_dev = { |
| 371 .probe = cx20442_codec_probe, | 373 .probe = cx20442_codec_probe, |
| 372 .remove = cx20442_codec_remove, | 374 .remove = cx20442_codec_remove, |
| 375 .reg_cache_default = &cx20442_reg, |
| 373 .reg_cache_size = 1, | 376 .reg_cache_size = 1, |
| 374 .reg_word_size = sizeof(u8), | 377 .reg_word_size = sizeof(u8), |
| 375 .read = cx20442_read_reg_cache, | 378 .read = cx20442_read_reg_cache, |
| 376 .write = cx20442_write, | 379 .write = cx20442_write, |
| 377 }; | 380 }; |
| 378 | 381 |
| 379 static int cx20442_platform_probe(struct platform_device *pdev) | 382 static int cx20442_platform_probe(struct platform_device *pdev) |
| 380 { | 383 { |
| 381 return snd_soc_register_codec(&pdev->dev, | 384 return snd_soc_register_codec(&pdev->dev, |
| 382 &cx20442_codec_dev, &cx20442_dai, 1); | 385 &cx20442_codec_dev, &cx20442_dai, 1); |
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| 406 static void __exit cx20442_exit(void) | 409 static void __exit cx20442_exit(void) |
| 407 { | 410 { |
| 408 platform_driver_unregister(&cx20442_platform_driver); | 411 platform_driver_unregister(&cx20442_platform_driver); |
| 409 } | 412 } |
| 410 module_exit(cx20442_exit); | 413 module_exit(cx20442_exit); |
| 411 | 414 |
| 412 MODULE_DESCRIPTION("ASoC CX20442-11 voice modem codec driver"); | 415 MODULE_DESCRIPTION("ASoC CX20442-11 voice modem codec driver"); |
| 413 MODULE_AUTHOR("Janusz Krzysztofik"); | 416 MODULE_AUTHOR("Janusz Krzysztofik"); |
| 414 MODULE_LICENSE("GPL"); | 417 MODULE_LICENSE("GPL"); |
| 415 MODULE_ALIAS("platform:cx20442-codec"); | 418 MODULE_ALIAS("platform:cx20442-codec"); |
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