summaryrefslogtreecommitdiffstats
path: root/sound/soc/tegra
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/tegra')
-rw-r--r--sound/soc/tegra/Kconfig26
-rw-r--r--sound/soc/tegra/Makefile15
-rw-r--r--sound/soc/tegra/harmony.c393
-rw-r--r--sound/soc/tegra/tegra_asoc_utils.c155
-rw-r--r--sound/soc/tegra/tegra_asoc_utils.h45
-rw-r--r--sound/soc/tegra/tegra_das.c265
-rw-r--r--sound/soc/tegra/tegra_das.h135
-rw-r--r--sound/soc/tegra/tegra_i2s.c503
-rw-r--r--sound/soc/tegra/tegra_i2s.h165
-rw-r--r--sound/soc/tegra/tegra_pcm.c404
-rw-r--r--sound/soc/tegra/tegra_pcm.h55
11 files changed, 2161 insertions, 0 deletions
diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
new file mode 100644
index 000000000000..66b504f06c23
--- /dev/null
+++ b/sound/soc/tegra/Kconfig
@@ -0,0 +1,26 @@
+config SND_TEGRA_SOC
+ tristate "SoC Audio for the Tegra System-on-Chip"
+ depends on ARCH_TEGRA && TEGRA_SYSTEM_DMA
+ default m
+ help
+ Say Y or M here if you want support for SoC audio on Tegra.
+
+config SND_TEGRA_SOC_I2S
+ tristate
+ depends on SND_TEGRA_SOC
+ default m
+ help
+ Say Y or M if you want to add support for codecs attached to the
+ Tegra I2S interface. You will also need to select the individual
+ machine drivers to support below.
+
+config SND_TEGRA_SOC_HARMONY
+ tristate "SoC Audio support for Tegra Harmony reference board"
+ depends on SND_TEGRA_SOC && MACH_HARMONY && I2C
+ default m
+ select SND_TEGRA_SOC_I2S
+ select SND_SOC_WM8903
+ help
+ Say Y or M here if you want to add support for SoC audio on the
+ Tegra Harmony reference board.
+
diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile
new file mode 100644
index 000000000000..fd183d3ab4f1
--- /dev/null
+++ b/sound/soc/tegra/Makefile
@@ -0,0 +1,15 @@
+# Tegra platform Support
+snd-soc-tegra-das-objs := tegra_das.o
+snd-soc-tegra-pcm-objs := tegra_pcm.o
+snd-soc-tegra-i2s-objs := tegra_i2s.o
+snd-soc-tegra-utils-objs += tegra_asoc_utils.o
+
+obj-$(CONFIG_SND_TEGRA_SOC) += snd-soc-tegra-utils.o
+obj-$(CONFIG_SND_TEGRA_SOC) += snd-soc-tegra-das.o
+obj-$(CONFIG_SND_TEGRA_SOC) += snd-soc-tegra-pcm.o
+obj-$(CONFIG_SND_TEGRA_SOC_I2S) += snd-soc-tegra-i2s.o
+
+# Tegra machine Support
+snd-soc-tegra-harmony-objs := harmony.o
+
+obj-$(CONFIG_SND_TEGRA_SOC_HARMONY) += snd-soc-tegra-harmony.o
diff --git a/sound/soc/tegra/harmony.c b/sound/soc/tegra/harmony.c
new file mode 100644
index 000000000000..8585957477eb
--- /dev/null
+++ b/sound/soc/tegra/harmony.c
@@ -0,0 +1,393 @@
+/*
+ * harmony.c - Harmony machine ASoC driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010-2011 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
+ *
+ * Copyright 2007 Wolfson Microelectronics PLC.
+ * Author: Graeme Gregory
+ * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <asm/mach-types.h>
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+
+#include <mach/harmony_audio.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "../codecs/wm8903.h"
+
+#include "tegra_das.h"
+#include "tegra_i2s.h"
+#include "tegra_pcm.h"
+#include "tegra_asoc_utils.h"
+
+#define DRV_NAME "tegra-snd-harmony"
+
+#define GPIO_SPKR_EN BIT(0)
+#define GPIO_INT_MIC_EN BIT(1)
+#define GPIO_EXT_MIC_EN BIT(2)
+
+struct tegra_harmony {
+ struct tegra_asoc_utils_data util_data;
+ struct harmony_audio_platform_data *pdata;
+ int gpio_requested;
+};
+
+static int harmony_asoc_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 tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
+ int srate, mclk, mclk_change;
+ int err;
+
+ srate = params_rate(params);
+ switch (srate) {
+ case 64000:
+ case 88200:
+ case 96000:
+ mclk = 128 * srate;
+ break;
+ default:
+ mclk = 256 * srate;
+ break;
+ }
+ /* FIXME: Codec only requires >= 3MHz if OSR==0 */
+ while (mclk < 6000000)
+ mclk *= 2;
+
+ err = tegra_asoc_utils_set_rate(&harmony->util_data, srate, mclk,
+ &mclk_change);
+ if (err < 0) {
+ dev_err(card->dev, "Can't configure clocks\n");
+ return err;
+ }
+
+ err = snd_soc_dai_set_fmt(codec_dai,
+ SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (err < 0) {
+ dev_err(card->dev, "codec_dai fmt not set\n");
+ return err;
+ }
+
+ err = snd_soc_dai_set_fmt(cpu_dai,
+ SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (err < 0) {
+ dev_err(card->dev, "cpu_dai fmt not set\n");
+ return err;
+ }
+
+ if (mclk_change) {
+ err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+ SND_SOC_CLOCK_IN);
+ if (err < 0) {
+ dev_err(card->dev, "codec_dai clock not set\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops harmony_asoc_ops = {
+ .hw_params = harmony_asoc_hw_params,
+};
+
+static struct snd_soc_jack harmony_hp_jack;
+
+static struct snd_soc_jack_pin harmony_hp_jack_pins[] = {
+ {
+ .pin = "Headphone Jack",
+ .mask = SND_JACK_HEADPHONE,
+ },
+};
+
+static struct snd_soc_jack_gpio harmony_hp_jack_gpios[] = {
+ {
+ .name = "headphone detect",
+ .report = SND_JACK_HEADPHONE,
+ .debounce_time = 150,
+ .invert = 1,
+ }
+};
+
+static struct snd_soc_jack harmony_mic_jack;
+
+static struct snd_soc_jack_pin harmony_mic_jack_pins[] = {
+ {
+ .pin = "Mic Jack",
+ .mask = SND_JACK_MICROPHONE,
+ },
+};
+
+static int harmony_event_int_spk(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ struct snd_soc_card *card = codec->card;
+ struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
+ struct harmony_audio_platform_data *pdata = harmony->pdata;
+
+ gpio_set_value_cansleep(pdata->gpio_spkr_en,
+ SND_SOC_DAPM_EVENT_ON(event));
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget harmony_dapm_widgets[] = {
+ SND_SOC_DAPM_SPK("Int Spk", harmony_event_int_spk),
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route harmony_audio_map[] = {
+ {"Headphone Jack", NULL, "HPOUTR"},
+ {"Headphone Jack", NULL, "HPOUTL"},
+ {"Int Spk", NULL, "ROP"},
+ {"Int Spk", NULL, "RON"},
+ {"Int Spk", NULL, "LOP"},
+ {"Int Spk", NULL, "LON"},
+ {"Mic Bias", NULL, "Mic Jack"},
+ {"IN1L", NULL, "Mic Bias"},
+};
+
+static const struct snd_kcontrol_new harmony_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Int Spk"),
+};
+
+static int harmony_asoc_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+ struct snd_soc_card *card = codec->card;
+ struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
+ struct harmony_audio_platform_data *pdata = harmony->pdata;
+ int ret;
+
+ ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
+ if (ret) {
+ dev_err(card->dev, "cannot get spkr_en gpio\n");
+ return ret;
+ }
+ harmony->gpio_requested |= GPIO_SPKR_EN;
+
+ gpio_direction_output(pdata->gpio_spkr_en, 0);
+
+ ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
+ if (ret) {
+ dev_err(card->dev, "cannot get int_mic_en gpio\n");
+ return ret;
+ }
+ harmony->gpio_requested |= GPIO_INT_MIC_EN;
+
+ /* Disable int mic; enable signal is active-high */
+ gpio_direction_output(pdata->gpio_int_mic_en, 0);
+
+ ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
+ if (ret) {
+ dev_err(card->dev, "cannot get ext_mic_en gpio\n");
+ return ret;
+ }
+ harmony->gpio_requested |= GPIO_EXT_MIC_EN;
+
+ /* Enable ext mic; enable signal is active-low */
+ gpio_direction_output(pdata->gpio_ext_mic_en, 0);
+
+ ret = snd_soc_add_controls(codec, harmony_controls,
+ ARRAY_SIZE(harmony_controls));
+ if (ret < 0)
+ return ret;
+
+ snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets,
+ ARRAY_SIZE(harmony_dapm_widgets));
+
+ snd_soc_dapm_add_routes(dapm, harmony_audio_map,
+ ARRAY_SIZE(harmony_audio_map));
+
+ harmony_hp_jack_gpios[0].gpio = pdata->gpio_hp_det;
+ snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
+ &harmony_hp_jack);
+ snd_soc_jack_add_pins(&harmony_hp_jack,
+ ARRAY_SIZE(harmony_hp_jack_pins),
+ harmony_hp_jack_pins);
+ snd_soc_jack_add_gpios(&harmony_hp_jack,
+ ARRAY_SIZE(harmony_hp_jack_gpios),
+ harmony_hp_jack_gpios);
+
+ snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
+ &harmony_mic_jack);
+ snd_soc_jack_add_pins(&harmony_mic_jack,
+ ARRAY_SIZE(harmony_mic_jack_pins),
+ harmony_mic_jack_pins);
+ wm8903_mic_detect(codec, &harmony_mic_jack, SND_JACK_MICROPHONE, 0);
+
+ snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
+
+ snd_soc_dapm_nc_pin(dapm, "IN3L");
+ snd_soc_dapm_nc_pin(dapm, "IN3R");
+ snd_soc_dapm_nc_pin(dapm, "LINEOUTL");
+ snd_soc_dapm_nc_pin(dapm, "LINEOUTR");
+
+ snd_soc_dapm_sync(dapm);
+
+ return 0;
+}
+
+static struct snd_soc_dai_link harmony_wm8903_dai = {
+ .name = "WM8903",
+ .stream_name = "WM8903 PCM",
+ .codec_name = "wm8903.0-001a",
+ .platform_name = "tegra-pcm-audio",
+ .cpu_dai_name = "tegra-i2s.0",
+ .codec_dai_name = "wm8903-hifi",
+ .init = harmony_asoc_init,
+ .ops = &harmony_asoc_ops,
+};
+
+static struct snd_soc_card snd_soc_harmony = {
+ .name = "tegra-harmony",
+ .dai_link = &harmony_wm8903_dai,
+ .num_links = 1,
+};
+
+static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_harmony;
+ struct tegra_harmony *harmony;
+ struct harmony_audio_platform_data *pdata;
+ int ret;
+
+ if (!machine_is_harmony()) {
+ dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
+ return -ENODEV;
+ }
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data supplied\n");
+ return -EINVAL;
+ }
+
+ harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL);
+ if (!harmony) {
+ dev_err(&pdev->dev, "Can't allocate tegra_harmony\n");
+ return -ENOMEM;
+ }
+
+ harmony->pdata = pdata;
+
+ ret = tegra_asoc_utils_init(&harmony->util_data, &pdev->dev);
+ if (ret)
+ goto err_free_harmony;
+
+ card->dev = &pdev->dev;
+ platform_set_drvdata(pdev, card);
+ snd_soc_card_set_drvdata(card, harmony);
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+ ret);
+ goto err_clear_drvdata;
+ }
+
+ return 0;
+
+err_clear_drvdata:
+ snd_soc_card_set_drvdata(card, NULL);
+ platform_set_drvdata(pdev, NULL);
+ card->dev = NULL;
+ tegra_asoc_utils_fini(&harmony->util_data);
+err_free_harmony:
+ kfree(harmony);
+ return ret;
+}
+
+static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
+ struct harmony_audio_platform_data *pdata = harmony->pdata;
+
+ snd_soc_unregister_card(card);
+
+ snd_soc_card_set_drvdata(card, NULL);
+ platform_set_drvdata(pdev, NULL);
+ card->dev = NULL;
+
+ tegra_asoc_utils_fini(&harmony->util_data);
+
+ if (harmony->gpio_requested & GPIO_EXT_MIC_EN)
+ gpio_free(pdata->gpio_ext_mic_en);
+ if (harmony->gpio_requested & GPIO_INT_MIC_EN)
+ gpio_free(pdata->gpio_int_mic_en);
+ if (harmony->gpio_requested & GPIO_SPKR_EN)
+ gpio_free(pdata->gpio_spkr_en);
+
+ kfree(harmony);
+
+ return 0;
+}
+
+static struct platform_driver tegra_snd_harmony_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = tegra_snd_harmony_probe,
+ .remove = __devexit_p(tegra_snd_harmony_remove),
+};
+
+static int __init snd_tegra_harmony_init(void)
+{
+ return platform_driver_register(&tegra_snd_harmony_driver);
+}
+module_init(snd_tegra_harmony_init);
+
+static void __exit snd_tegra_harmony_exit(void)
+{
+ platform_driver_unregister(&tegra_snd_harmony_driver);
+}
+module_exit(snd_tegra_harmony_exit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Harmony machine ASoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/sound/soc/tegra/tegra_asoc_utils.c b/sound/soc/tegra/tegra_asoc_utils.c
new file mode 100644
index 000000000000..52f0a3f9ce40
--- /dev/null
+++ b/sound/soc/tegra/tegra_asoc_utils.c
@@ -0,0 +1,155 @@
+/*
+ * tegra_asoc_utils.c - Harmony machine ASoC driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+
+#include "tegra_asoc_utils.h"
+
+int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
+ int mclk, int *mclk_change)
+{
+ int new_baseclock;
+ int err;
+
+ switch (srate) {
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ new_baseclock = 56448000;
+ break;
+ case 8000:
+ case 16000:
+ case 32000:
+ case 48000:
+ case 64000:
+ case 96000:
+ new_baseclock = 73728000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ *mclk_change = ((new_baseclock != data->set_baseclock) ||
+ (mclk != data->set_mclk));
+ if (!*mclk_change)
+ return 0;
+
+ data->set_baseclock = 0;
+ data->set_mclk = 0;
+
+ clk_disable(data->clk_cdev1);
+ clk_disable(data->clk_pll_a_out0);
+ clk_disable(data->clk_pll_a);
+
+ err = clk_set_rate(data->clk_pll_a, new_baseclock);
+ if (err) {
+ dev_err(data->dev, "Can't set pll_a rate: %d\n", err);
+ return err;
+ }
+
+ err = clk_set_rate(data->clk_pll_a_out0, mclk);
+ if (err) {
+ dev_err(data->dev, "Can't set pll_a_out0 rate: %d\n", err);
+ return err;
+ }
+
+ /* Don't set cdev1 rate; its locked to pll_a_out0 */
+
+ err = clk_enable(data->clk_pll_a);
+ if (err) {
+ dev_err(data->dev, "Can't enable pll_a: %d\n", err);
+ return err;
+ }
+
+ err = clk_enable(data->clk_pll_a_out0);
+ if (err) {
+ dev_err(data->dev, "Can't enable pll_a_out0: %d\n", err);
+ return err;
+ }
+
+ err = clk_enable(data->clk_cdev1);
+ if (err) {
+ dev_err(data->dev, "Can't enable cdev1: %d\n", err);
+ return err;
+ }
+
+ data->set_baseclock = new_baseclock;
+ data->set_mclk = mclk;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_asoc_utils_set_rate);
+
+int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
+ struct device *dev)
+{
+ int ret;
+
+ data->dev = dev;
+
+ data->clk_pll_a = clk_get_sys(NULL, "pll_a");
+ if (IS_ERR(data->clk_pll_a)) {
+ dev_err(data->dev, "Can't retrieve clk pll_a\n");
+ ret = PTR_ERR(data->clk_pll_a);
+ goto err;
+ }
+
+ data->clk_pll_a_out0 = clk_get_sys(NULL, "pll_a_out0");
+ if (IS_ERR(data->clk_pll_a_out0)) {
+ dev_err(data->dev, "Can't retrieve clk pll_a_out0\n");
+ ret = PTR_ERR(data->clk_pll_a_out0);
+ goto err_put_pll_a;
+ }
+
+ data->clk_cdev1 = clk_get_sys(NULL, "cdev1");
+ if (IS_ERR(data->clk_cdev1)) {
+ dev_err(data->dev, "Can't retrieve clk cdev1\n");
+ ret = PTR_ERR(data->clk_cdev1);
+ goto err_put_pll_a_out0;
+ }
+
+ return 0;
+
+err_put_pll_a_out0:
+ clk_put(data->clk_pll_a_out0);
+err_put_pll_a:
+ clk_put(data->clk_pll_a);
+err:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tegra_asoc_utils_init);
+
+void tegra_asoc_utils_fini(struct tegra_asoc_utils_data *data)
+{
+ clk_put(data->clk_cdev1);
+ clk_put(data->clk_pll_a_out0);
+ clk_put(data->clk_pll_a);
+}
+EXPORT_SYMBOL_GPL(tegra_asoc_utils_fini);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra ASoC utility code");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/tegra/tegra_asoc_utils.h b/sound/soc/tegra/tegra_asoc_utils.h
new file mode 100644
index 000000000000..bbba7afdfc2c
--- /dev/null
+++ b/sound/soc/tegra/tegra_asoc_utils.h
@@ -0,0 +1,45 @@
+/*
+ * tegra_asoc_utils.h - Definitions for Tegra DAS driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __TEGRA_ASOC_UTILS_H__
+#define __TEGRA_ASOC_UTILS_H_
+
+struct clk;
+struct device;
+
+struct tegra_asoc_utils_data {
+ struct device *dev;
+ struct clk *clk_pll_a;
+ struct clk *clk_pll_a_out0;
+ struct clk *clk_cdev1;
+ int set_baseclock;
+ int set_mclk;
+};
+
+int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
+ int mclk, int *mclk_change);
+int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
+ struct device *dev);
+void tegra_asoc_utils_fini(struct tegra_asoc_utils_data *data);
+
+#endif
+
diff --git a/sound/soc/tegra/tegra_das.c b/sound/soc/tegra/tegra_das.c
new file mode 100644
index 000000000000..9f24ef73f2cb
--- /dev/null
+++ b/sound/soc/tegra/tegra_das.c
@@ -0,0 +1,265 @@
+/*
+ * tegra_das.c - Tegra DAS driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <mach/iomap.h>
+#include <sound/soc.h>
+#include "tegra_das.h"
+
+#define DRV_NAME "tegra-das"
+
+static struct tegra_das *das;
+
+static inline void tegra_das_write(u32 reg, u32 val)
+{
+ __raw_writel(val, das->regs + reg);
+}
+
+static inline u32 tegra_das_read(u32 reg)
+{
+ return __raw_readl(das->regs + reg);
+}
+
+int tegra_das_connect_dap_to_dac(int dap, int dac)
+{
+ u32 addr;
+ u32 reg;
+
+ if (!das)
+ return -ENODEV;
+
+ addr = TEGRA_DAS_DAP_CTRL_SEL +
+ (dap * TEGRA_DAS_DAP_CTRL_SEL_STRIDE);
+ reg = dac << TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P;
+
+ tegra_das_write(addr, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_das_connect_dap_to_dac);
+
+int tegra_das_connect_dap_to_dap(int dap, int otherdap, int master,
+ int sdata1rx, int sdata2rx)
+{
+ u32 addr;
+ u32 reg;
+
+ if (!das)
+ return -ENODEV;
+
+ addr = TEGRA_DAS_DAP_CTRL_SEL +
+ (dap * TEGRA_DAS_DAP_CTRL_SEL_STRIDE);
+ reg = otherdap << TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P |
+ !!sdata2rx << TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_P |
+ !!sdata1rx << TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_P |
+ !!master << TEGRA_DAS_DAP_CTRL_SEL_DAP_MS_SEL_P;
+
+ tegra_das_write(addr, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_das_connect_dap_to_dap);
+
+int tegra_das_connect_dac_to_dap(int dac, int dap)
+{
+ u32 addr;
+ u32 reg;
+
+ if (!das)
+ return -ENODEV;
+
+ addr = TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL +
+ (dac * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE);
+ reg = dap << TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_P |
+ dap << TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_P |
+ dap << TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_P;
+
+ tegra_das_write(addr, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_das_connect_dac_to_dap);
+
+#ifdef CONFIG_DEBUG_FS
+static int tegra_das_show(struct seq_file *s, void *unused)
+{
+ int i;
+ u32 addr;
+ u32 reg;
+
+ for (i = 0; i < TEGRA_DAS_DAP_CTRL_SEL_COUNT; i++) {
+ addr = TEGRA_DAS_DAP_CTRL_SEL +
+ (i * TEGRA_DAS_DAP_CTRL_SEL_STRIDE);
+ reg = tegra_das_read(addr);
+ seq_printf(s, "TEGRA_DAS_DAP_CTRL_SEL[%d] = %08x\n", i, reg);
+ }
+
+ for (i = 0; i < TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_COUNT; i++) {
+ addr = TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL +
+ (i * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE);
+ reg = tegra_das_read(addr);
+ seq_printf(s, "TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL[%d] = %08x\n",
+ i, reg);
+ }
+
+ return 0;
+}
+
+static int tegra_das_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, tegra_das_show, inode->i_private);
+}
+
+static const struct file_operations tegra_das_debug_fops = {
+ .open = tegra_das_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void tegra_das_debug_add(struct tegra_das *das)
+{
+ das->debug = debugfs_create_file(DRV_NAME, S_IRUGO,
+ snd_soc_debugfs_root, das,
+ &tegra_das_debug_fops);
+}
+
+static void tegra_das_debug_remove(struct tegra_das *das)
+{
+ if (das->debug)
+ debugfs_remove(das->debug);
+}
+#else
+static inline void tegra_das_debug_add(struct tegra_das *das)
+{
+}
+
+static inline void tegra_das_debug_remove(struct tegra_das *das)
+{
+}
+#endif
+
+static int __devinit tegra_das_probe(struct platform_device *pdev)
+{
+ struct resource *res, *region;
+ int ret = 0;
+
+ if (das)
+ return -ENODEV;
+
+ das = kzalloc(sizeof(struct tegra_das), GFP_KERNEL);
+ if (!das) {
+ dev_err(&pdev->dev, "Can't allocate tegra_das\n");
+ ret = -ENOMEM;
+ goto exit;
+ }
+ das->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "No memory resource\n");
+ ret = -ENODEV;
+ goto err_free;
+ }
+
+ region = request_mem_region(res->start, resource_size(res),
+ pdev->name);
+ if (!region) {
+ dev_err(&pdev->dev, "Memory region already claimed\n");
+ ret = -EBUSY;
+ goto err_free;
+ }
+
+ das->regs = ioremap(res->start, resource_size(res));
+ if (!das->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_release;
+ }
+
+ tegra_das_debug_add(das);
+
+ platform_set_drvdata(pdev, das);
+
+ return 0;
+
+err_release:
+ release_mem_region(res->start, resource_size(res));
+err_free:
+ kfree(das);
+ das = 0;
+exit:
+ return ret;
+}
+
+static int __devexit tegra_das_remove(struct platform_device *pdev)
+{
+ struct resource *res;
+
+ if (!das)
+ return -ENODEV;
+
+ platform_set_drvdata(pdev, NULL);
+
+ tegra_das_debug_remove(das);
+
+ iounmap(das->regs);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, resource_size(res));
+
+ kfree(das);
+ das = 0;
+
+ return 0;
+}
+
+static struct platform_driver tegra_das_driver = {
+ .probe = tegra_das_probe,
+ .remove = __devexit_p(tegra_das_remove),
+ .driver = {
+ .name = DRV_NAME,
+ },
+};
+
+static int __init tegra_das_modinit(void)
+{
+ return platform_driver_register(&tegra_das_driver);
+}
+module_init(tegra_das_modinit);
+
+static void __exit tegra_das_modexit(void)
+{
+ platform_driver_unregister(&tegra_das_driver);
+}
+module_exit(tegra_das_modexit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra DAS driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/sound/soc/tegra/tegra_das.h b/sound/soc/tegra/tegra_das.h
new file mode 100644
index 000000000000..2c96c7b3c459
--- /dev/null
+++ b/sound/soc/tegra/tegra_das.h
@@ -0,0 +1,135 @@
+/*
+ * tegra_das.h - Definitions for Tegra DAS driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __TEGRA_DAS_H__
+#define __TEGRA_DAS_H__
+
+/* Register TEGRA_DAS_DAP_CTRL_SEL */
+#define TEGRA_DAS_DAP_CTRL_SEL 0x00
+#define TEGRA_DAS_DAP_CTRL_SEL_COUNT 5
+#define TEGRA_DAS_DAP_CTRL_SEL_STRIDE 4
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_MS_SEL_P 31
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_MS_SEL_S 1
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_P 30
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_S 1
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_P 29
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_S 1
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P 0
+#define TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_S 5
+
+/* Values for field TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL */
+#define TEGRA_DAS_DAP_SEL_DAC1 0
+#define TEGRA_DAS_DAP_SEL_DAC2 1
+#define TEGRA_DAS_DAP_SEL_DAC3 2
+#define TEGRA_DAS_DAP_SEL_DAP1 16
+#define TEGRA_DAS_DAP_SEL_DAP2 17
+#define TEGRA_DAS_DAP_SEL_DAP3 18
+#define TEGRA_DAS_DAP_SEL_DAP4 19
+#define TEGRA_DAS_DAP_SEL_DAP5 20
+
+/* Register TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL */
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL 0x40
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_COUNT 3
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE 4
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_P 28
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_S 4
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_P 24
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_S 4
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_P 0
+#define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_S 4
+
+/*
+ * Values for:
+ * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL
+ * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL
+ * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL
+ */
+#define TEGRA_DAS_DAC_SEL_DAP1 0
+#define TEGRA_DAS_DAC_SEL_DAP2 1
+#define TEGRA_DAS_DAC_SEL_DAP3 2
+#define TEGRA_DAS_DAC_SEL_DAP4 3
+#define TEGRA_DAS_DAC_SEL_DAP5 4
+
+/*
+ * Names/IDs of the DACs/DAPs.
+ */
+
+#define TEGRA_DAS_DAP_ID_1 0
+#define TEGRA_DAS_DAP_ID_2 1
+#define TEGRA_DAS_DAP_ID_3 2
+#define TEGRA_DAS_DAP_ID_4 3
+#define TEGRA_DAS_DAP_ID_5 4
+
+#define TEGRA_DAS_DAC_ID_1 0
+#define TEGRA_DAS_DAC_ID_2 1
+#define TEGRA_DAS_DAC_ID_3 2
+
+struct tegra_das {
+ struct device *dev;
+ void __iomem *regs;
+ struct dentry *debug;
+};
+
+/*
+ * Terminology:
+ * DAS: Digital audio switch (HW module controlled by this driver)
+ * DAP: Digital audio port (port/pins on Tegra device)
+ * DAC: Digital audio controller (e.g. I2S or AC97 controller elsewhere)
+ *
+ * The Tegra DAS is a mux/cross-bar which can connect each DAP to a specific
+ * DAC, or another DAP. When DAPs are connected, one must be the master and
+ * one the slave. Each DAC allows selection of a specific DAP for input, to
+ * cater for the case where N DAPs are connected to 1 DAC for broadcast
+ * output.
+ *
+ * This driver is dumb; no attempt is made to ensure that a valid routing
+ * configuration is programmed.
+ */
+
+/*
+ * Connect a DAP to to a DAC
+ * dap_id: DAP to connect: TEGRA_DAS_DAP_ID_*
+ * dac_sel: DAC to connect to: TEGRA_DAS_DAP_SEL_DAC*
+ */
+extern int tegra_das_connect_dap_to_dac(int dap_id, int dac_sel);
+
+/*
+ * Connect a DAP to to another DAP
+ * dap_id: DAP to connect: TEGRA_DAS_DAP_ID_*
+ * other_dap_sel: DAP to connect to: TEGRA_DAS_DAP_SEL_DAP*
+ * master: Is this DAP the master (1) or slave (0)
+ * sdata1rx: Is this DAP's SDATA1 pin RX (1) or TX (0)
+ * sdata2rx: Is this DAP's SDATA2 pin RX (1) or TX (0)
+ */
+extern int tegra_das_connect_dap_to_dap(int dap_id, int other_dap_sel,
+ int master, int sdata1rx,
+ int sdata2rx);
+
+/*
+ * Connect a DAC's input to a DAP
+ * (DAC outputs are selected by the DAP)
+ * dac_id: DAC ID to connect: TEGRA_DAS_DAC_ID_*
+ * dap_sel: DAP to receive input from: TEGRA_DAS_DAC_SEL_DAP*
+ */
+extern int tegra_das_connect_dac_to_dap(int dac_id, int dap_sel);
+
+#endif
diff --git a/sound/soc/tegra/tegra_i2s.c b/sound/soc/tegra/tegra_i2s.c
new file mode 100644
index 000000000000..4f5e2c90b020
--- /dev/null
+++ b/sound/soc/tegra/tegra_i2s.c
@@ -0,0 +1,503 @@
+/*
+ * tegra_i2s.c - Tegra I2S driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@nvidia.com>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@google.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <mach/iomap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra_das.h"
+#include "tegra_i2s.h"
+
+#define DRV_NAME "tegra-i2s"
+
+static inline void tegra_i2s_write(struct tegra_i2s *i2s, u32 reg, u32 val)
+{
+ __raw_writel(val, i2s->regs + reg);
+}
+
+static inline u32 tegra_i2s_read(struct tegra_i2s *i2s, u32 reg)
+{
+ return __raw_readl(i2s->regs + reg);
+}
+
+#ifdef CONFIG_DEBUG_FS
+static int tegra_i2s_show(struct seq_file *s, void *unused)
+{
+#define REG(r) { r, #r }
+ static const struct {
+ int offset;
+ const char *name;
+ } regs[] = {
+ REG(TEGRA_I2S_CTRL),
+ REG(TEGRA_I2S_STATUS),
+ REG(TEGRA_I2S_TIMING),
+ REG(TEGRA_I2S_FIFO_SCR),
+ REG(TEGRA_I2S_PCM_CTRL),
+ REG(TEGRA_I2S_NW_CTRL),
+ REG(TEGRA_I2S_TDM_CTRL),
+ REG(TEGRA_I2S_TDM_TX_RX_CTRL),
+ };
+#undef REG
+
+ struct tegra_i2s *i2s = s->private;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(regs); i++) {
+ u32 val = tegra_i2s_read(i2s, regs[i].offset);
+ seq_printf(s, "%s = %08x\n", regs[i].name, val);
+ }
+
+ return 0;
+}
+
+static int tegra_i2s_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, tegra_i2s_show, inode->i_private);
+}
+
+static const struct file_operations tegra_i2s_debug_fops = {
+ .open = tegra_i2s_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void tegra_i2s_debug_add(struct tegra_i2s *i2s, int id)
+{
+ char name[] = DRV_NAME ".0";
+
+ snprintf(name, sizeof(name), DRV_NAME".%1d", id);
+ i2s->debug = debugfs_create_file(name, S_IRUGO, snd_soc_debugfs_root,
+ i2s, &tegra_i2s_debug_fops);
+}
+
+static void tegra_i2s_debug_remove(struct tegra_i2s *i2s)
+{
+ if (i2s->debug)
+ debugfs_remove(i2s->debug);
+}
+#else
+static inline void tegra_i2s_debug_add(struct tegra_i2s *i2s)
+{
+}
+
+static inline void tegra_i2s_debug_remove(struct tegra_i2s *i2s)
+{
+}
+#endif
+
+static int tegra_i2s_set_fmt(struct snd_soc_dai *dai,
+ unsigned int fmt)
+{
+ struct tegra_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_MASTER_ENABLE;
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_MASTER_ENABLE;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ i2s->reg_ctrl &= ~(TEGRA_I2S_CTRL_BIT_FORMAT_MASK |
+ TEGRA_I2S_CTRL_LRCK_MASK);
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_DSP;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_DSP;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_R_LOW;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_I2S;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_RJM;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_LJM;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tegra_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct device *dev = substream->pcm->card->dev;
+ struct tegra_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+ u32 reg;
+ int ret, sample_size, srate, i2sclock, bitcnt;
+
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_BIT_SIZE_MASK;
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_SIZE_16;
+ sample_size = 16;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_SIZE_24;
+ sample_size = 24;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_SIZE_32;
+ sample_size = 32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ srate = params_rate(params);
+
+ /* Final "* 2" required by Tegra hardware */
+ i2sclock = srate * params_channels(params) * sample_size * 2;
+
+ ret = clk_set_rate(i2s->clk_i2s, i2sclock);
+ if (ret) {
+ dev_err(dev, "Can't set I2S clock rate: %d\n", ret);
+ return ret;
+ }
+
+ bitcnt = (i2sclock / (2 * srate)) - 1;
+ if (bitcnt < 0 || bitcnt > TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US)
+ return -EINVAL;
+ reg = bitcnt << TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT;
+
+ if (i2sclock % (2 * srate))
+ reg |= TEGRA_I2S_TIMING_NON_SYM_ENABLE;
+
+ tegra_i2s_write(i2s, TEGRA_I2S_TIMING, reg);
+
+ tegra_i2s_write(i2s, TEGRA_I2S_FIFO_SCR,
+ TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS |
+ TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS);
+
+ return 0;
+}
+
+static void tegra_i2s_start_playback(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_FIFO1_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static void tegra_i2s_stop_playback(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_FIFO1_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static void tegra_i2s_start_capture(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_FIFO2_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static void tegra_i2s_stop_capture(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_FIFO2_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static int tegra_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct tegra_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ if (!i2s->clk_refs)
+ clk_enable(i2s->clk_i2s);
+ i2s->clk_refs++;
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ tegra_i2s_start_playback(i2s);
+ else
+ tegra_i2s_start_capture(i2s);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ tegra_i2s_stop_playback(i2s);
+ else
+ tegra_i2s_stop_capture(i2s);
+ i2s->clk_refs--;
+ if (!i2s->clk_refs)
+ clk_disable(i2s->clk_i2s);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tegra_i2s_probe(struct snd_soc_dai *dai)
+{
+ struct tegra_i2s * i2s = snd_soc_dai_get_drvdata(dai);
+
+ dai->capture_dma_data = &i2s->capture_dma_data;
+ dai->playback_dma_data = &i2s->playback_dma_data;
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops tegra_i2s_dai_ops = {
+ .set_fmt = tegra_i2s_set_fmt,
+ .hw_params = tegra_i2s_hw_params,
+ .trigger = tegra_i2s_trigger,
+};
+
+struct snd_soc_dai_driver tegra_i2s_dai[] = {
+ {
+ .name = DRV_NAME ".0",
+ .probe = tegra_i2s_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &tegra_i2s_dai_ops,
+ .symmetric_rates = 1,
+ },
+ {
+ .name = DRV_NAME ".1",
+ .probe = tegra_i2s_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &tegra_i2s_dai_ops,
+ .symmetric_rates = 1,
+ },
+};
+
+static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev)
+{
+ struct tegra_i2s * i2s;
+ char clk_name[12]; /* tegra-i2s.0 */
+ struct resource *mem, *memregion, *dmareq;
+ int ret;
+
+ if ((pdev->id < 0) ||
+ (pdev->id >= ARRAY_SIZE(tegra_i2s_dai))) {
+ dev_err(&pdev->dev, "ID %d out of range\n", pdev->id);
+ return -EINVAL;
+ }
+
+ /*
+ * FIXME: Until a codec driver exists for the tegra DAS, hard-code a
+ * 1:1 mapping between audio controllers and audio ports.
+ */
+ ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1 + pdev->id,
+ TEGRA_DAS_DAP_SEL_DAC1 + pdev->id);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't set up DAP connection\n");
+ return ret;
+ }
+ ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1 + pdev->id,
+ TEGRA_DAS_DAC_SEL_DAP1 + pdev->id);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't set up DAC connection\n");
+ return ret;
+ }
+
+ i2s = kzalloc(sizeof(struct tegra_i2s), GFP_KERNEL);
+ if (!i2s) {
+ dev_err(&pdev->dev, "Can't allocate tegra_i2s\n");
+ ret = -ENOMEM;
+ goto exit;
+ }
+ dev_set_drvdata(&pdev->dev, i2s);
+
+ snprintf(clk_name, sizeof(clk_name), DRV_NAME ".%d", pdev->id);
+ i2s->clk_i2s = clk_get_sys(clk_name, NULL);
+ if (IS_ERR(i2s->clk_i2s)) {
+ dev_err(&pdev->dev, "Can't retrieve i2s clock\n");
+ ret = PTR_ERR(i2s->clk_i2s);
+ goto err_free;
+ }
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem) {
+ dev_err(&pdev->dev, "No memory resource\n");
+ ret = -ENODEV;
+ goto err_clk_put;
+ }
+
+ dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ if (!dmareq) {
+ dev_err(&pdev->dev, "No DMA resource\n");
+ ret = -ENODEV;
+ goto err_clk_put;
+ }
+
+ memregion = request_mem_region(mem->start, resource_size(mem),
+ DRV_NAME);
+ if (!memregion) {
+ dev_err(&pdev->dev, "Memory region already claimed\n");
+ ret = -EBUSY;
+ goto err_clk_put;
+ }
+
+ i2s->regs = ioremap(mem->start, resource_size(mem));
+ if (!i2s->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_release;
+ }
+
+ i2s->capture_dma_data.addr = mem->start + TEGRA_I2S_FIFO2;
+ i2s->capture_dma_data.wrap = 4;
+ i2s->capture_dma_data.width = 32;
+ i2s->capture_dma_data.req_sel = dmareq->start;
+
+ i2s->playback_dma_data.addr = mem->start + TEGRA_I2S_FIFO1;
+ i2s->playback_dma_data.wrap = 4;
+ i2s->playback_dma_data.width = 32;
+ i2s->playback_dma_data.req_sel = dmareq->start;
+
+ i2s->reg_ctrl = TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED;
+
+ ret = snd_soc_register_dai(&pdev->dev, &tegra_i2s_dai[pdev->id]);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
+ ret = -ENOMEM;
+ goto err_unmap;
+ }
+
+ tegra_i2s_debug_add(i2s, pdev->id);
+
+ return 0;
+
+err_unmap:
+ iounmap(i2s->regs);
+err_release:
+ release_mem_region(mem->start, resource_size(mem));
+err_clk_put:
+ clk_put(i2s->clk_i2s);
+err_free:
+ kfree(i2s);
+exit:
+ return ret;
+}
+
+static int __devexit tegra_i2s_platform_remove(struct platform_device *pdev)
+{
+ struct tegra_i2s *i2s = dev_get_drvdata(&pdev->dev);
+ struct resource *res;
+
+ snd_soc_unregister_dai(&pdev->dev);
+
+ tegra_i2s_debug_remove(i2s);
+
+ iounmap(i2s->regs);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, resource_size(res));
+
+ clk_put(i2s->clk_i2s);
+
+ kfree(i2s);
+
+ return 0;
+}
+
+static struct platform_driver tegra_i2s_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = tegra_i2s_platform_probe,
+ .remove = __devexit_p(tegra_i2s_platform_remove),
+};
+
+static int __init snd_tegra_i2s_init(void)
+{
+ return platform_driver_register(&tegra_i2s_driver);
+}
+module_init(snd_tegra_i2s_init);
+
+static void __exit snd_tegra_i2s_exit(void)
+{
+ platform_driver_unregister(&tegra_i2s_driver);
+}
+module_exit(snd_tegra_i2s_exit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra I2S ASoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/sound/soc/tegra/tegra_i2s.h b/sound/soc/tegra/tegra_i2s.h
new file mode 100644
index 000000000000..2b38a096f46c
--- /dev/null
+++ b/sound/soc/tegra/tegra_i2s.h
@@ -0,0 +1,165 @@
+/*
+ * tegra_i2s.h - Definitions for Tegra I2S driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@nvidia.com>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@google.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __TEGRA_I2S_H__
+#define __TEGRA_I2S_H__
+
+#include "tegra_pcm.h"
+
+/* Register offsets from TEGRA_I2S1_BASE and TEGRA_I2S2_BASE */
+
+#define TEGRA_I2S_CTRL 0x00
+#define TEGRA_I2S_STATUS 0x04
+#define TEGRA_I2S_TIMING 0x08
+#define TEGRA_I2S_FIFO_SCR 0x0c
+#define TEGRA_I2S_PCM_CTRL 0x10
+#define TEGRA_I2S_NW_CTRL 0x14
+#define TEGRA_I2S_TDM_CTRL 0x20
+#define TEGRA_I2S_TDM_TX_RX_CTRL 0x24
+#define TEGRA_I2S_FIFO1 0x40
+#define TEGRA_I2S_FIFO2 0x80
+
+/* Fields in TEGRA_I2S_CTRL */
+
+#define TEGRA_I2S_CTRL_FIFO2_TX_ENABLE (1 << 30)
+#define TEGRA_I2S_CTRL_FIFO1_ENABLE (1 << 29)
+#define TEGRA_I2S_CTRL_FIFO2_ENABLE (1 << 28)
+#define TEGRA_I2S_CTRL_FIFO1_RX_ENABLE (1 << 27)
+#define TEGRA_I2S_CTRL_FIFO_LPBK_ENABLE (1 << 26)
+#define TEGRA_I2S_CTRL_MASTER_ENABLE (1 << 25)
+
+#define TEGRA_I2S_LRCK_LEFT_LOW 0
+#define TEGRA_I2S_LRCK_RIGHT_LOW 1
+
+#define TEGRA_I2S_CTRL_LRCK_SHIFT 24
+#define TEGRA_I2S_CTRL_LRCK_MASK (1 << TEGRA_I2S_CTRL_LRCK_SHIFT)
+#define TEGRA_I2S_CTRL_LRCK_L_LOW (TEGRA_I2S_LRCK_LEFT_LOW << TEGRA_I2S_CTRL_LRCK_SHIFT)
+#define TEGRA_I2S_CTRL_LRCK_R_LOW (TEGRA_I2S_LRCK_RIGHT_LOW << TEGRA_I2S_CTRL_LRCK_SHIFT)
+
+#define TEGRA_I2S_BIT_FORMAT_I2S 0
+#define TEGRA_I2S_BIT_FORMAT_RJM 1
+#define TEGRA_I2S_BIT_FORMAT_LJM 2
+#define TEGRA_I2S_BIT_FORMAT_DSP 3
+
+#define TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT 10
+#define TEGRA_I2S_CTRL_BIT_FORMAT_MASK (3 << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_I2S (TEGRA_I2S_BIT_FORMAT_I2S << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_RJM (TEGRA_I2S_BIT_FORMAT_RJM << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_LJM (TEGRA_I2S_BIT_FORMAT_LJM << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_DSP (TEGRA_I2S_BIT_FORMAT_DSP << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
+
+#define TEGRA_I2S_BIT_SIZE_16 0
+#define TEGRA_I2S_BIT_SIZE_20 1
+#define TEGRA_I2S_BIT_SIZE_24 2
+#define TEGRA_I2S_BIT_SIZE_32 3
+
+#define TEGRA_I2S_CTRL_BIT_SIZE_SHIFT 8
+#define TEGRA_I2S_CTRL_BIT_SIZE_MASK (3 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_16 (TEGRA_I2S_BIT_SIZE_16 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_20 (TEGRA_I2S_BIT_SIZE_20 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_24 (TEGRA_I2S_BIT_SIZE_24 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_32 (TEGRA_I2S_BIT_SIZE_32 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
+
+#define TEGRA_I2S_FIFO_16_LSB 0
+#define TEGRA_I2S_FIFO_20_LSB 1
+#define TEGRA_I2S_FIFO_24_LSB 2
+#define TEGRA_I2S_FIFO_32 3
+#define TEGRA_I2S_FIFO_PACKED 7
+
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT 4
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_MASK (7 << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_16_LSB (TEGRA_I2S_FIFO_16_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_20_LSB (TEGRA_I2S_FIFO_20_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_24_LSB (TEGRA_I2S_FIFO_24_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_32 (TEGRA_I2S_FIFO_32 << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED (TEGRA_I2S_FIFO_PACKED << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
+
+#define TEGRA_I2S_CTRL_IE_FIFO1_ERR (1 << 3)
+#define TEGRA_I2S_CTRL_IE_FIFO2_ERR (1 << 2)
+#define TEGRA_I2S_CTRL_QE_FIFO1 (1 << 1)
+#define TEGRA_I2S_CTRL_QE_FIFO2 (1 << 0)
+
+/* Fields in TEGRA_I2S_STATUS */
+
+#define TEGRA_I2S_STATUS_FIFO1_RDY (1 << 31)
+#define TEGRA_I2S_STATUS_FIFO2_RDY (1 << 30)
+#define TEGRA_I2S_STATUS_FIFO1_BSY (1 << 29)
+#define TEGRA_I2S_STATUS_FIFO2_BSY (1 << 28)
+#define TEGRA_I2S_STATUS_FIFO1_ERR (1 << 3)
+#define TEGRA_I2S_STATUS_FIFO2_ERR (1 << 2)
+#define TEGRA_I2S_STATUS_QS_FIFO1 (1 << 1)
+#define TEGRA_I2S_STATUS_QS_FIFO2 (1 << 0)
+
+/* Fields in TEGRA_I2S_TIMING */
+
+#define TEGRA_I2S_TIMING_NON_SYM_ENABLE (1 << 12)
+#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0
+#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7fff
+#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
+
+/* Fields in TEGRA_I2S_FIFO_SCR */
+
+#define TEGRA_I2S_FIFO_SCR_FIFO2_FULL_EMPTY_COUNT_SHIFT 24
+#define TEGRA_I2S_FIFO_SCR_FIFO1_FULL_EMPTY_COUNT_SHIFT 16
+#define TEGRA_I2S_FIFO_SCR_FIFO_FULL_EMPTY_COUNT_MASK 0x3f
+
+#define TEGRA_I2S_FIFO_SCR_FIFO2_CLR (1 << 12)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_CLR (1 << 8)
+
+#define TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT 0
+#define TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS 1
+#define TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS 2
+#define TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS 3
+
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT 4
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_MASK (3 << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_ONE_SLOT (TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_EIGHT_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_TWELVE_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
+
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT 0
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_MASK (3 << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_ONE_SLOT (TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_EIGHT_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_TWELVE_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
+
+struct tegra_i2s {
+ struct clk *clk_i2s;
+ int clk_refs;
+ struct tegra_pcm_dma_params capture_dma_data;
+ struct tegra_pcm_dma_params playback_dma_data;
+ void __iomem *regs;
+ struct dentry *debug;
+ u32 reg_ctrl;
+};
+
+#endif
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
new file mode 100644
index 000000000000..3c271f953582
--- /dev/null
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -0,0 +1,404 @@
+/*
+ * tegra_pcm.c - Tegra PCM driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@nvidia.com>
+ * Vijay Mali <vmali@nvidia.com>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@google.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra_pcm.h"
+
+#define DRV_NAME "tegra-pcm-audio"
+
+static const struct snd_pcm_hardware tegra_pcm_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_INTERLEAVED,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .period_bytes_min = 1024,
+ .period_bytes_max = PAGE_SIZE,
+ .periods_min = 2,
+ .periods_max = 8,
+ .buffer_bytes_max = PAGE_SIZE * 8,
+ .fifo_size = 4,
+};
+
+static void tegra_pcm_queue_dma(struct tegra_runtime_data *prtd)
+{
+ struct snd_pcm_substream *substream = prtd->substream;
+ struct snd_dma_buffer *buf = &substream->dma_buffer;
+ struct tegra_dma_req *dma_req;
+ unsigned long addr;
+
+ dma_req = &prtd->dma_req[prtd->dma_req_idx];
+ prtd->dma_req_idx = 1 - prtd->dma_req_idx;
+
+ addr = buf->addr + prtd->dma_pos;
+ prtd->dma_pos += dma_req->size;
+ if (prtd->dma_pos >= prtd->dma_pos_end)
+ prtd->dma_pos = 0;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dma_req->source_addr = addr;
+ else
+ dma_req->dest_addr = addr;
+
+ tegra_dma_enqueue_req(prtd->dma_chan, dma_req);
+}
+
+static void dma_complete_callback(struct tegra_dma_req *req)
+{
+ struct tegra_runtime_data *prtd = (struct tegra_runtime_data *)req->dev;
+ struct snd_pcm_substream *substream = prtd->substream;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ spin_lock(&prtd->lock);
+
+ if (!prtd->running) {
+ spin_unlock(&prtd->lock);
+ return;
+ }
+
+ if (++prtd->period_index >= runtime->periods)
+ prtd->period_index = 0;
+
+ tegra_pcm_queue_dma(prtd);
+
+ spin_unlock(&prtd->lock);
+
+ snd_pcm_period_elapsed(substream);
+}
+
+static void setup_dma_tx_request(struct tegra_dma_req *req,
+ struct tegra_pcm_dma_params * dmap)
+{
+ req->complete = dma_complete_callback;
+ req->to_memory = false;
+ req->dest_addr = dmap->addr;
+ req->dest_wrap = dmap->wrap;
+ req->source_bus_width = 32;
+ req->source_wrap = 0;
+ req->dest_bus_width = dmap->width;
+ req->req_sel = dmap->req_sel;
+}
+
+static void setup_dma_rx_request(struct tegra_dma_req *req,
+ struct tegra_pcm_dma_params * dmap)
+{
+ req->complete = dma_complete_callback;
+ req->to_memory = true;
+ req->source_addr = dmap->addr;
+ req->dest_wrap = 0;
+ req->source_bus_width = dmap->width;
+ req->source_wrap = dmap->wrap;
+ req->dest_bus_width = 32;
+ req->req_sel = dmap->req_sel;
+}
+
+static int tegra_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct tegra_runtime_data *prtd;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct tegra_pcm_dma_params * dmap;
+ int ret = 0;
+
+ prtd = kzalloc(sizeof(struct tegra_runtime_data), GFP_KERNEL);
+ if (prtd == NULL)
+ return -ENOMEM;
+
+ runtime->private_data = prtd;
+ prtd->substream = substream;
+
+ spin_lock_init(&prtd->lock);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+ setup_dma_tx_request(&prtd->dma_req[0], dmap);
+ setup_dma_tx_request(&prtd->dma_req[1], dmap);
+ } else {
+ dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+ setup_dma_rx_request(&prtd->dma_req[0], dmap);
+ setup_dma_rx_request(&prtd->dma_req[1], dmap);
+ }
+
+ prtd->dma_req[0].dev = prtd;
+ prtd->dma_req[1].dev = prtd;
+
+ prtd->dma_chan = tegra_dma_allocate_channel(TEGRA_DMA_MODE_ONESHOT);
+ if (prtd->dma_chan == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ /* Set HW params now that initialization is complete */
+ snd_soc_set_runtime_hwparams(substream, &tegra_pcm_hardware);
+
+ /* Ensure that buffer size is a multiple of period size */
+ ret = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (ret < 0)
+ goto err;
+
+ return 0;
+
+err:
+ if (prtd->dma_chan) {
+ tegra_dma_free_channel(prtd->dma_chan);
+ }
+
+ kfree(prtd);
+
+ return ret;
+}
+
+static int tegra_pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct tegra_runtime_data *prtd = runtime->private_data;
+
+ tegra_dma_free_channel(prtd->dma_chan);
+
+ kfree(prtd);
+
+ return 0;
+}
+
+static int tegra_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct tegra_runtime_data *prtd = runtime->private_data;
+
+ snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
+
+ prtd->dma_req[0].size = params_period_bytes(params);
+ prtd->dma_req[1].size = prtd->dma_req[0].size;
+
+ return 0;
+}
+
+static int tegra_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ snd_pcm_set_runtime_buffer(substream, NULL);
+
+ return 0;
+}
+
+static int tegra_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct tegra_runtime_data *prtd = runtime->private_data;
+ unsigned long flags;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ prtd->dma_pos = 0;
+ prtd->dma_pos_end = frames_to_bytes(runtime, runtime->periods * runtime->period_size);
+ prtd->period_index = 0;
+ prtd->dma_req_idx = 0;
+ /* Fall-through */
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ spin_lock_irqsave(&prtd->lock, flags);
+ prtd->running = 1;
+ spin_unlock_irqrestore(&prtd->lock, flags);
+ tegra_pcm_queue_dma(prtd);
+ tegra_pcm_queue_dma(prtd);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ spin_lock_irqsave(&prtd->lock, flags);
+ prtd->running = 0;
+ spin_unlock_irqrestore(&prtd->lock, flags);
+ tegra_dma_dequeue_req(prtd->dma_chan, &prtd->dma_req[0]);
+ tegra_dma_dequeue_req(prtd->dma_chan, &prtd->dma_req[1]);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t tegra_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct tegra_runtime_data *prtd = runtime->private_data;
+
+ return prtd->period_index * runtime->period_size;
+}
+
+
+static int tegra_pcm_mmap(struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ return dma_mmap_writecombine(substream->pcm->card->dev, vma,
+ runtime->dma_area,
+ runtime->dma_addr,
+ runtime->dma_bytes);
+}
+
+static struct snd_pcm_ops tegra_pcm_ops = {
+ .open = tegra_pcm_open,
+ .close = tegra_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = tegra_pcm_hw_params,
+ .hw_free = tegra_pcm_hw_free,
+ .trigger = tegra_pcm_trigger,
+ .pointer = tegra_pcm_pointer,
+ .mmap = tegra_pcm_mmap,
+};
+
+static int tegra_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
+{
+ struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+ struct snd_dma_buffer *buf = &substream->dma_buffer;
+ size_t size = tegra_pcm_hardware.buffer_bytes_max;
+
+ buf->area = dma_alloc_writecombine(pcm->card->dev, size,
+ &buf->addr, GFP_KERNEL);
+ if (!buf->area)
+ return -ENOMEM;
+
+ buf->dev.type = SNDRV_DMA_TYPE_DEV;
+ buf->dev.dev = pcm->card->dev;
+ buf->private_data = NULL;
+ buf->bytes = size;
+
+ return 0;
+}
+
+static void tegra_pcm_deallocate_dma_buffer(struct snd_pcm *pcm, int stream)
+{
+ struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+ struct snd_dma_buffer *buf = &substream->dma_buffer;
+
+ if (!buf->area)
+ return;
+
+ dma_free_writecombine(pcm->card->dev, buf->bytes,
+ buf->area, buf->addr);
+ buf->area = NULL;
+}
+
+static u64 tegra_dma_mask = DMA_BIT_MASK(32);
+
+static int tegra_pcm_new(struct snd_card *card,
+ struct snd_soc_dai *dai, struct snd_pcm *pcm)
+{
+ int ret = 0;
+
+ if (!card->dev->dma_mask)
+ card->dev->dma_mask = &tegra_dma_mask;
+ if (!card->dev->coherent_dma_mask)
+ card->dev->coherent_dma_mask = 0xffffffff;
+
+ if (dai->driver->playback.channels_min) {
+ ret = tegra_pcm_preallocate_dma_buffer(pcm,
+ SNDRV_PCM_STREAM_PLAYBACK);
+ if (ret)
+ goto err;
+ }
+
+ if (dai->driver->capture.channels_min) {
+ ret = tegra_pcm_preallocate_dma_buffer(pcm,
+ SNDRV_PCM_STREAM_CAPTURE);
+ if (ret)
+ goto err_free_play;
+ }
+
+ return 0;
+
+err_free_play:
+ tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK);
+err:
+ return ret;
+}
+
+static void tegra_pcm_free(struct snd_pcm *pcm)
+{
+ tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_CAPTURE);
+ tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK);
+}
+
+struct snd_soc_platform_driver tegra_pcm_platform = {
+ .ops = &tegra_pcm_ops,
+ .pcm_new = tegra_pcm_new,
+ .pcm_free = tegra_pcm_free,
+};
+
+static int __devinit tegra_pcm_platform_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_platform(&pdev->dev, &tegra_pcm_platform);
+}
+
+static int __devexit tegra_pcm_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_platform(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver tegra_pcm_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = tegra_pcm_platform_probe,
+ .remove = __devexit_p(tegra_pcm_platform_remove),
+};
+
+static int __init snd_tegra_pcm_init(void)
+{
+ return platform_driver_register(&tegra_pcm_driver);
+}
+module_init(snd_tegra_pcm_init);
+
+static void __exit snd_tegra_pcm_exit(void)
+{
+ platform_driver_unregister(&tegra_pcm_driver);
+}
+module_exit(snd_tegra_pcm_exit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra PCM ASoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h
new file mode 100644
index 000000000000..dbb90339fe0d
--- /dev/null
+++ b/sound/soc/tegra/tegra_pcm.h
@@ -0,0 +1,55 @@
+/*
+ * tegra_pcm.h - Definitions for Tegra PCM driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@nvidia.com>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@google.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __TEGRA_PCM_H__
+#define __TEGRA_PCM_H__
+
+#include <mach/dma.h>
+
+struct tegra_pcm_dma_params {
+ unsigned long addr;
+ unsigned long wrap;
+ unsigned long width;
+ unsigned long req_sel;
+};
+
+struct tegra_runtime_data {
+ struct snd_pcm_substream *substream;
+ spinlock_t lock;
+ int running;
+ int dma_pos;
+ int dma_pos_end;
+ int period_index;
+ int dma_req_idx;
+ struct tegra_dma_req dma_req[2];
+ struct tegra_dma_channel *dma_chan;
+};
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 03:18:32 +0000