diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/codecs/cx20442.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/codecs/cx20442.c | 443 |
1 files changed, 0 insertions, 443 deletions
diff --git a/ANDROID_3.4.5/sound/soc/codecs/cx20442.c b/ANDROID_3.4.5/sound/soc/codecs/cx20442.c deleted file mode 100644 index d5fd00a6..00000000 --- a/ANDROID_3.4.5/sound/soc/codecs/cx20442.c +++ /dev/null @@ -1,443 +0,0 @@ -/* - * cx20442.c -- CX20442 ALSA Soc Audio driver - * - * Copyright 2009 Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> - * - * Initially based on sound/soc/codecs/wm8400.c - * Copyright 2008, 2009 Wolfson Microelectronics PLC. - * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/tty.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/regulator/consumer.h> - -#include <sound/core.h> -#include <sound/initval.h> -#include <sound/soc.h> - -#include "cx20442.h" - - -struct cx20442_priv { - void *control_data; - struct regulator *por; -}; - -#define CX20442_PM 0x0 - -#define CX20442_TELIN 0 -#define CX20442_TELOUT 1 -#define CX20442_MIC 2 -#define CX20442_SPKOUT 3 -#define CX20442_AGC 4 - -static const struct snd_soc_dapm_widget cx20442_dapm_widgets[] = { - SND_SOC_DAPM_OUTPUT("TELOUT"), - SND_SOC_DAPM_OUTPUT("SPKOUT"), - SND_SOC_DAPM_OUTPUT("AGCOUT"), - - SND_SOC_DAPM_MIXER("SPKOUT Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), - - SND_SOC_DAPM_PGA("TELOUT Amp", CX20442_PM, CX20442_TELOUT, 0, NULL, 0), - SND_SOC_DAPM_PGA("SPKOUT Amp", CX20442_PM, CX20442_SPKOUT, 0, NULL, 0), - SND_SOC_DAPM_PGA("SPKOUT AGC", CX20442_PM, CX20442_AGC, 0, NULL, 0), - - SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), - SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), - - SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), - - SND_SOC_DAPM_MICBIAS("TELIN Bias", CX20442_PM, CX20442_TELIN, 0), - SND_SOC_DAPM_MICBIAS("MIC Bias", CX20442_PM, CX20442_MIC, 0), - - SND_SOC_DAPM_PGA("MIC AGC", CX20442_PM, CX20442_AGC, 0, NULL, 0), - - SND_SOC_DAPM_INPUT("TELIN"), - SND_SOC_DAPM_INPUT("MIC"), - SND_SOC_DAPM_INPUT("AGCIN"), -}; - -static const struct snd_soc_dapm_route cx20442_audio_map[] = { - {"TELOUT", NULL, "TELOUT Amp"}, - - {"SPKOUT", NULL, "SPKOUT Mixer"}, - {"SPKOUT Mixer", NULL, "SPKOUT Amp"}, - - {"TELOUT Amp", NULL, "DAC"}, - {"SPKOUT Amp", NULL, "DAC"}, - - {"SPKOUT Mixer", NULL, "SPKOUT AGC"}, - {"SPKOUT AGC", NULL, "AGCIN"}, - - {"AGCOUT", NULL, "MIC AGC"}, - {"MIC AGC", NULL, "MIC"}, - - {"MIC Bias", NULL, "MIC"}, - {"Input Mixer", NULL, "MIC Bias"}, - - {"TELIN Bias", NULL, "TELIN"}, - {"Input Mixer", NULL, "TELIN Bias"}, - - {"ADC", NULL, "Input Mixer"}, -}; - -static unsigned int cx20442_read_reg_cache(struct snd_soc_codec *codec, - unsigned int reg) -{ - u8 *reg_cache = codec->reg_cache; - - if (reg >= codec->driver->reg_cache_size) - return -EINVAL; - - return reg_cache[reg]; -} - -enum v253_vls { - V253_VLS_NONE = 0, - V253_VLS_T, - V253_VLS_L, - V253_VLS_LT, - V253_VLS_S, - V253_VLS_ST, - V253_VLS_M, - V253_VLS_MST, - V253_VLS_S1, - V253_VLS_S1T, - V253_VLS_MS1T, - V253_VLS_M1, - V253_VLS_M1ST, - V253_VLS_M1S1T, - V253_VLS_H, - V253_VLS_HT, - V253_VLS_MS, - V253_VLS_MS1, - V253_VLS_M1S, - V253_VLS_M1S1, - V253_VLS_TEST, -}; - -static int cx20442_pm_to_v253_vls(u8 value) -{ - switch (value & ~(1 << CX20442_AGC)) { - case 0: - return V253_VLS_T; - case (1 << CX20442_SPKOUT): - case (1 << CX20442_MIC): - case (1 << CX20442_SPKOUT) | (1 << CX20442_MIC): - return V253_VLS_M1S1; - case (1 << CX20442_TELOUT): - case (1 << CX20442_TELIN): - case (1 << CX20442_TELOUT) | (1 << CX20442_TELIN): - return V253_VLS_L; - case (1 << CX20442_TELOUT) | (1 << CX20442_MIC): - return V253_VLS_NONE; - } - return -EINVAL; -} -static int cx20442_pm_to_v253_vsp(u8 value) -{ - switch (value & ~(1 << CX20442_AGC)) { - case (1 << CX20442_SPKOUT): - case (1 << CX20442_MIC): - case (1 << CX20442_SPKOUT) | (1 << CX20442_MIC): - return (bool)(value & (1 << CX20442_AGC)); - } - return (value & (1 << CX20442_AGC)) ? -EINVAL : 0; -} - -static int cx20442_write(struct snd_soc_codec *codec, unsigned int reg, - unsigned int value) -{ - struct cx20442_priv *cx20442 = snd_soc_codec_get_drvdata(codec); - u8 *reg_cache = codec->reg_cache; - int vls, vsp, old, len; - char buf[18]; - - if (reg >= codec->driver->reg_cache_size) - return -EINVAL; - - /* hw_write and control_data pointers required for talking to the modem - * are expected to be set by the line discipline initialization code */ - if (!codec->hw_write || !cx20442->control_data) - return -EIO; - - old = reg_cache[reg]; - reg_cache[reg] = value; - - vls = cx20442_pm_to_v253_vls(value); - if (vls < 0) - return vls; - - vsp = cx20442_pm_to_v253_vsp(value); - if (vsp < 0) - return vsp; - - if ((vls == V253_VLS_T) || - (vls == cx20442_pm_to_v253_vls(old))) { - if (vsp == cx20442_pm_to_v253_vsp(old)) - return 0; - len = snprintf(buf, ARRAY_SIZE(buf), "at+vsp=%d\r", vsp); - } else if (vsp == cx20442_pm_to_v253_vsp(old)) - len = snprintf(buf, ARRAY_SIZE(buf), "at+vls=%d\r", vls); - else - len = snprintf(buf, ARRAY_SIZE(buf), - "at+vls=%d;+vsp=%d\r", vls, vsp); - - if (unlikely(len > (ARRAY_SIZE(buf) - 1))) - return -ENOMEM; - - dev_dbg(codec->dev, "%s: %s\n", __func__, buf); - if (codec->hw_write(cx20442->control_data, buf, len) != len) - return -EIO; - - return 0; -} - - -/* - * Line discpline related code - * - * Any of the callback functions below can be used in two ways: - * 1) registerd by a machine driver as one of line discipline operations, - * 2) called from a machine's provided line discipline callback function - * in case when extra machine specific code must be run as well. - */ - -/* Modem init: echo off, digital speaker off, quiet off, voice mode */ -static const char *v253_init = "ate0m0q0+fclass=8\r"; - -/* Line discipline .open() */ -static int v253_open(struct tty_struct *tty) -{ - int ret, len = strlen(v253_init); - - /* Doesn't make sense without write callback */ - if (!tty->ops->write) - return -EINVAL; - - /* Won't work if no codec pointer has been passed by a card driver */ - if (!tty->disc_data) - return -ENODEV; - - if (tty->ops->write(tty, v253_init, len) != len) { - ret = -EIO; - goto err; - } - /* Actual setup will be performed after the modem responds. */ - return 0; -err: - tty->disc_data = NULL; - return ret; -} - -/* Line discipline .close() */ -static void v253_close(struct tty_struct *tty) -{ - struct snd_soc_codec *codec = tty->disc_data; - struct cx20442_priv *cx20442; - - tty->disc_data = NULL; - - if (!codec) - return; - - cx20442 = snd_soc_codec_get_drvdata(codec); - - /* Prevent the codec driver from further accessing the modem */ - codec->hw_write = NULL; - cx20442->control_data = NULL; - codec->card->pop_time = 0; -} - -/* Line discipline .hangup() */ -static int v253_hangup(struct tty_struct *tty) -{ - v253_close(tty); - return 0; -} - -/* Line discipline .receive_buf() */ -static void v253_receive(struct tty_struct *tty, - const unsigned char *cp, char *fp, int count) -{ - struct snd_soc_codec *codec = tty->disc_data; - struct cx20442_priv *cx20442; - - if (!codec) - return; - - cx20442 = snd_soc_codec_get_drvdata(codec); - - if (!cx20442->control_data) { - /* First modem response, complete setup procedure */ - - /* Set up codec driver access to modem controls */ - cx20442->control_data = tty; - codec->hw_write = (hw_write_t)tty->ops->write; - codec->card->pop_time = 1; - } -} - -/* Line discipline .write_wakeup() */ -static void v253_wakeup(struct tty_struct *tty) -{ -} - -struct tty_ldisc_ops v253_ops = { - .magic = TTY_LDISC_MAGIC, - .name = "cx20442", - .owner = THIS_MODULE, - .open = v253_open, - .close = v253_close, - .hangup = v253_hangup, - .receive_buf = v253_receive, - .write_wakeup = v253_wakeup, -}; -EXPORT_SYMBOL_GPL(v253_ops); - - -/* - * Codec DAI - */ - -static struct snd_soc_dai_driver cx20442_dai = { - .name = "cx20442-voice", - .playback = { - .stream_name = "Playback", - .channels_min = 1, - .channels_max = 1, - .rates = SNDRV_PCM_RATE_8000, - .formats = SNDRV_PCM_FMTBIT_S16_LE, - }, - .capture = { - .stream_name = "Capture", - .channels_min = 1, - .channels_max = 1, - .rates = SNDRV_PCM_RATE_8000, - .formats = SNDRV_PCM_FMTBIT_S16_LE, - }, -}; - -static int cx20442_set_bias_level(struct snd_soc_codec *codec, - enum snd_soc_bias_level level) -{ - struct cx20442_priv *cx20442 = snd_soc_codec_get_drvdata(codec); - int err = 0; - - switch (level) { - case SND_SOC_BIAS_PREPARE: - if (codec->dapm.bias_level != SND_SOC_BIAS_STANDBY) - break; - if (IS_ERR(cx20442->por)) - err = PTR_ERR(cx20442->por); - else - err = regulator_enable(cx20442->por); - break; - case SND_SOC_BIAS_STANDBY: - if (codec->dapm.bias_level != SND_SOC_BIAS_PREPARE) - break; - if (IS_ERR(cx20442->por)) - err = PTR_ERR(cx20442->por); - else - err = regulator_disable(cx20442->por); - break; - default: - break; - } - if (!err) - codec->dapm.bias_level = level; - - return err; -} - -static int cx20442_codec_probe(struct snd_soc_codec *codec) -{ - struct cx20442_priv *cx20442; - - cx20442 = kzalloc(sizeof(struct cx20442_priv), GFP_KERNEL); - if (cx20442 == NULL) - return -ENOMEM; - - cx20442->por = regulator_get(codec->dev, "POR"); - if (IS_ERR(cx20442->por)) - dev_warn(codec->dev, "failed to get the regulator"); - cx20442->control_data = NULL; - - snd_soc_codec_set_drvdata(codec, cx20442); - codec->hw_write = NULL; - codec->card->pop_time = 0; - - return 0; -} - -/* power down chip */ -static int cx20442_codec_remove(struct snd_soc_codec *codec) -{ - struct cx20442_priv *cx20442 = snd_soc_codec_get_drvdata(codec); - - if (cx20442->control_data) { - struct tty_struct *tty = cx20442->control_data; - tty_hangup(tty); - } - - if (!IS_ERR(cx20442->por)) { - /* should be already in STANDBY, hence disabled */ - regulator_put(cx20442->por); - } - - snd_soc_codec_set_drvdata(codec, NULL); - kfree(cx20442); - return 0; -} - -static const u8 cx20442_reg; - -static struct snd_soc_codec_driver cx20442_codec_dev = { - .probe = cx20442_codec_probe, - .remove = cx20442_codec_remove, - .set_bias_level = cx20442_set_bias_level, - .reg_cache_default = &cx20442_reg, - .reg_cache_size = 1, - .reg_word_size = sizeof(u8), - .read = cx20442_read_reg_cache, - .write = cx20442_write, - .dapm_widgets = cx20442_dapm_widgets, - .num_dapm_widgets = ARRAY_SIZE(cx20442_dapm_widgets), - .dapm_routes = cx20442_audio_map, - .num_dapm_routes = ARRAY_SIZE(cx20442_audio_map), -}; - -static int cx20442_platform_probe(struct platform_device *pdev) -{ - return snd_soc_register_codec(&pdev->dev, - &cx20442_codec_dev, &cx20442_dai, 1); -} - -static int __exit cx20442_platform_remove(struct platform_device *pdev) -{ - snd_soc_unregister_codec(&pdev->dev); - return 0; -} - -static struct platform_driver cx20442_platform_driver = { - .driver = { - .name = "cx20442-codec", - .owner = THIS_MODULE, - }, - .probe = cx20442_platform_probe, - .remove = __exit_p(cx20442_platform_remove), -}; - -module_platform_driver(cx20442_platform_driver); - -MODULE_DESCRIPTION("ASoC CX20442-11 voice modem codec driver"); -MODULE_AUTHOR("Janusz Krzysztofik"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:cx20442-codec"); |