diff options
Diffstat (limited to 'sound/soc/tegra/colibri_t20.c')
| -rw-r--r-- | sound/soc/tegra/colibri_t20.c | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/sound/soc/tegra/colibri_t20.c b/sound/soc/tegra/colibri_t20.c new file mode 100644 index 000000000000..b07f814e4731 --- /dev/null +++ b/sound/soc/tegra/colibri_t20.c @@ -0,0 +1,391 @@ +/* + * SoC audio driver for Toradex Colibri T20 + * + * Copyright (C) 2012 Toradex Inc. + * + * 2010-11-19: Marcel Ziswiler <marcel.ziswiler@noser.com> + * initial version (note: WM9715L is fully WM9712 compatible) + * + * Copied from tosa.c: + * Copyright 2005 Wolfson Microelectronics PLC. + * Copyright 2005 Openedhand Ltd. + * + * Authors: Liam Girdwood <lrg@slimlogic.co.uk> + * Richard Purdie <richard@openedhand.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 <asm/mach-types.h> + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/gpio.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/slab.h> + +#include <mach/audio.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> /* order crucial */ +#include <sound/soc-dapm.h> + +#include "../codecs/wm9712.h" +#include "tegra_asoc_utils.h" +#include "tegra_pcm.h" +#include "tegra20_ac97.h" + +#define DRV_NAME "colibri_t20-snd-wm9715l" + +struct colibri_t20_wm9715l { + struct tegra_asoc_utils_data util_data; +}; + +static int colibri_t20_wm9715l_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_card *card = codec->card; + struct colibri_t20_wm9715l *machine = snd_soc_card_get_drvdata(card); + int srate, mclk; + int err; + + srate = params_rate(params); + + /* AC97 clock is really fixed */ + mclk = 24576000; + + err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); + if (err < 0) { + if (!(machine->util_data.set_mclk % mclk)) + mclk = machine->util_data.set_mclk; + else { + dev_err(card->dev, "Can't configure clocks\n"); + return err; + } + } + + tegra_asoc_utils_lock_clk_rate(&machine->util_data, 1); + +//DAS AC97 DAC to DAP switching already done at probe + + return 0; +} + +static int tegra_spdif_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct colibri_t20_wm9715l *machine = snd_soc_card_get_drvdata(card); + int srate, mclk, min_mclk; + int err; + + srate = params_rate(params); + switch (srate) { + case 11025: + case 22050: + case 44100: + case 88200: + mclk = 11289600; + break; + case 8000: + case 16000: + case 32000: + case 48000: + case 64000: + case 96000: + mclk = 12288000; + break; + default: + return -EINVAL; + } + min_mclk = 128 * srate; + + err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); + if (err < 0) { + if (!(machine->util_data.set_mclk % min_mclk)) + mclk = machine->util_data.set_mclk; + else { + dev_err(card->dev, "Can't configure clocks\n"); + return err; + } + } + + tegra_asoc_utils_lock_clk_rate(&machine->util_data, 1); + + return 0; +} + +static int tegra_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct colibri_t20_wm9715l *machine = snd_soc_card_get_drvdata(rtd->card); + + tegra_asoc_utils_lock_clk_rate(&machine->util_data, 0); + + return 0; +} + +static struct snd_soc_ops colibri_t20_wm9715l_ops = { + .hw_params = colibri_t20_wm9715l_hw_params, + .hw_free = tegra_hw_free, +}; + +static struct snd_soc_ops tegra_spdif_ops = { + .hw_params = tegra_spdif_hw_params, + .hw_free = tegra_hw_free, +}; + +static const struct snd_soc_dapm_widget colibri_t20_wm9715l_dapm_widgets[] = { + SND_SOC_DAPM_HP("HEADPHONE", NULL), + SND_SOC_DAPM_LINE("LINEIN", NULL), + SND_SOC_DAPM_MIC("MIC_IN", NULL), +}; + +/* Currently supported audio map */ +static const struct snd_soc_dapm_route colibri_t20_wm9715l_audio_map[] = { + /* Colibri SODIMM pin 1 (MIC_IN) + Colibri Evaluation Board: Audio jack X26 bottom pink + Iris: Audio header X9 pin 2 + Orchid: Audio jack X11 bottom pink MIC in */ + { "MIC_IN", NULL, "MIC1" }, + + /* Colibri SODIMM pin 5 & 7 (LINEIN_L/R) + Colibri Evaluation Board: Audio jack X26 top blue + Iris: Audio header X9 pin 4 & 3 + MECS Tellurium: Audio jack X11 pin 1 & 2 + Orchid: Audio jack X11 top blue line in */ + { "LINEIN", NULL, "LINEINL" }, + { "LINEIN", NULL, "LINEINR" }, + + /* Colibri SODIMM pin 15 & 17 (HEADPHONE_L/R) + Colibri Evaluation Board: Audio jack X26 middle green + Iris: Audio jack X8 + MECS Tellurium: Audio jack X11 pin 4 & 5 (HEADPHONE_LF/RF) + Orchid: Audio jack X11 middle green line out + Protea: Audio jack X53 line out */ + { "HEADPHONE", NULL, "LOUT2" }, + { "HEADPHONE", NULL, "ROUT2" }, +}; + +static int colibri_t20_wm9715l_init(struct snd_soc_pcm_runtime *rtd) +{ + int err; + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_dapm_context *dapm = &codec->dapm; + + pr_info("%s()\n", __func__); + +//GPIOs + + /* add Colibri T20 specific widgets */ + err = snd_soc_dapm_new_controls(dapm, colibri_t20_wm9715l_dapm_widgets, + ARRAY_SIZE(colibri_t20_wm9715l_dapm_widgets)); + if (err) + return err; + + /* set up Colibri T20 specific audio path audio_map */ + err = snd_soc_dapm_add_routes(dapm, colibri_t20_wm9715l_audio_map, ARRAY_SIZE(colibri_t20_wm9715l_audio_map)); + if (err) + return err; + +//jack detection + + /* connected pins */ + snd_soc_dapm_enable_pin(dapm, "HPOUTL"); + snd_soc_dapm_enable_pin(dapm, "HPOUTR"); + snd_soc_dapm_enable_pin(dapm, "LINEINL"); + snd_soc_dapm_enable_pin(dapm, "LINEINR"); + snd_soc_dapm_enable_pin(dapm, "MIC1"); + + /* not connected pins */ + snd_soc_dapm_nc_pin(dapm, "LOUT2"); + snd_soc_dapm_nc_pin(dapm, "MIC2"); + snd_soc_dapm_nc_pin(dapm, "MONOOUT"); + snd_soc_dapm_nc_pin(dapm, "OUT3"); + snd_soc_dapm_nc_pin(dapm, "PCBEEP"); + snd_soc_dapm_nc_pin(dapm, "PHONE"); + snd_soc_dapm_nc_pin(dapm, "ROUT2"); + + err = snd_soc_dapm_sync(dapm); + if (err) + return err; + + return 0; +} + +static struct snd_soc_dai_link colibri_t20_wm9715l_dai[] = { + { + .name = "AC97", +// .name = "AC97 HiFi", + .stream_name = "AC97 HiFi", + .cpu_dai_name = "tegra20-ac97-pcm", + .codec_dai_name = "wm9712-hifi", + .platform_name = "tegra-pcm-audio", + .codec_name = "wm9712-codec", + .init = colibri_t20_wm9715l_init, + .ops = &colibri_t20_wm9715l_ops, + }, +//order + { + .name = "SPDIF", + .stream_name = "SPDIF PCM", + .codec_name = "spdif-dit.0", + .platform_name = "tegra-pcm-audio", + .cpu_dai_name = "tegra20-spdif", + .codec_dai_name = "dit-hifi", + .ops = &tegra_spdif_ops, + }, +#if 0 + { + .name = "AC97 Aux", + .stream_name = "AC97 Aux", + .cpu_dai_name = "tegra20-ac97-modem", + .codec_dai_name = "wm9712-aux", + .platform_name = "tegra-pcm-audio", + .codec_name = "wm9712-codec", + }, +#endif +}; + +//power management + +static struct snd_soc_card snd_soc_colibri_t20_wm9715l = { + .name = "colibri_t20-wm9715l", + .dai_link = colibri_t20_wm9715l_dai, + .num_links = ARRAY_SIZE(colibri_t20_wm9715l_dai), +// .suspend_post = colibri_t20_wm9715l_suspend_post, +// .resume_pre = colibri_t20_wm9715l_resume_pre, +}; + +// +static struct platform_device *colibri_t20_snd_wm9715l_device; +// + +static __devinit int colibri_t20_wm9715l_driver_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &snd_soc_colibri_t20_wm9715l; + struct colibri_t20_wm9715l *machine; + int ret; + + pr_info("%s()\n", __func__); + + if (!machine_is_colibri_t20()) + return -ENODEV; + +//make sure tegra20-ac97 is properly loaded to avoid subsequent crash + + machine = kzalloc(sizeof(struct colibri_t20_wm9715l), GFP_KERNEL); + if (!machine) { + dev_err(&pdev->dev, "Can't allocate colibri_t20_wm9715l struct\n"); + return -ENOMEM; + } + + ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev, card); + if (ret) + goto err_free_machine; + +//regulator handling + +//switch handling + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + snd_soc_card_set_drvdata(card, machine); + + /* explicitly instanciate AC97 codec */ + + colibri_t20_snd_wm9715l_device = platform_device_alloc("wm9712-codec", -1); + if (!colibri_t20_snd_wm9715l_device) { + dev_err(&pdev->dev, "platform_device_alloc of wm9712-codec failed (%d)\n", + ret); + goto err_fini_utils; + } + + ret = platform_device_add(colibri_t20_snd_wm9715l_device); + if (ret) { + dev_err(&pdev->dev, "platform_device_add of wm9712-codec failed (%d)\n", + ret); + goto err_fini_utils; + } + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", + ret); + goto err_fini_utils; + } + + if (!card->instantiated) { + ret = -ENODEV; + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", + ret); + goto err_unregister_card; + } + + return 0; + +err_unregister_card: + snd_soc_unregister_card(card); +err_fini_utils: + tegra_asoc_utils_fini(&machine->util_data); +err_free_machine: + kfree(machine); + return ret; +} + +static int __devexit colibri_t20_wm9715l_driver_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + struct colibri_t20_wm9715l *machine = snd_soc_card_get_drvdata(card); + + snd_soc_unregister_card(card); + +//how to revert? +// platform_device_alloc("wm9712-codec"); + + tegra_asoc_utils_fini(&machine->util_data); + + kfree(machine); + + return 0; +} + +static struct platform_driver colibri_t20_wm9715l_driver = { + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, +// .pm = &snd_soc_pm_ops, + }, + .probe = colibri_t20_wm9715l_driver_probe, + .remove = __devexit_p(colibri_t20_wm9715l_driver_remove), +}; + +static int __init colibri_t20_wm9715l_modinit(void) +{ + return platform_driver_register(&colibri_t20_wm9715l_driver); +} + +static void __exit colibri_t20_wm9715l_modexit(void) +{ + platform_driver_unregister(&colibri_t20_wm9715l_driver); +} + +module_init(colibri_t20_wm9715l_modinit); +module_exit(colibri_t20_wm9715l_modexit); + +/* Module information */ +MODULE_AUTHOR("Marcel Ziswiler <marcel.ziswiler@toradex.com>"); +MODULE_DESCRIPTION("ALSA SoC WM9715L on Toradex Colibri T20"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); |