Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
sound/soc/tegra/Kconfig | 10 ++
sound/soc/tegra/Makefile | 4 +
sound/soc/tegra/harmony.c | 313 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 327 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/tegra/harmony.c
diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index d6b0444..31a310d 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -17,3 +17,13 @@ config SND_TEGRA_SOC_I2S
This option conflicts with TEGRA_I2S_AUDIO.
+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
index d7712a2..f94bce8 100644
--- a/sound/soc/tegra/Makefile
+++ b/sound/soc/tegra/Makefile
@@ -7,3 +7,7 @@ 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 0000000..158308b
--- /dev/null
+++ b/sound/soc/tegra/harmony.c
@@ -0,0 +1,313 @@
+/*
+ * harmony.c - Harmony machine ASoC driver
+ *
+ * Author: Stephen Warren <swarren@xxxxxxxxxx>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@xxxxxxxxxx>
+ * Vijay Mali <vmali@xxxxxxxxxx>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@xxxxxxxxxx>
+ *
+ * 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/clk.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <sound/soc.h>
+
+#include "../codecs/wm8903.h"
+#include "tegra_das.h"
+#include "tegra_i2s.h"
+#include "tegra_pcm.h"
+
+#define PREFIX "ASoC Harmony: "
+
+static struct platform_device *harmony_snd_device;
+
+struct clk *clk_pll_a;
+struct clk *clk_pll_a_out0;
+struct clk *clk_i2s1;
+struct clk *clk_audio;
+struct clk *clk_audio_2x;
+
+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->dai->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+ int srate, bitclock;
+ int err;
+
+ srate = params_rate(params);
+ switch (srate) {
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ bitclock = 11289600;
+ break;
+ case 8000:
+ case 16000:
+ case 32000:
+ case 48000:
+ case 64000:
+ case 96000:
+ bitclock = 12288000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ clk_disable(clk_audio_2x);
+ clk_disable(clk_audio);
+ clk_disable(clk_i2s1);
+ clk_disable(clk_pll_a_out0);
+ clk_disable(clk_pll_a);
+
+ err = clk_set_rate(clk_pll_a, bitclock);
+ if (err) {
+ pr_err(PREFIX "Can't set pll_a rate: %d\n", err);
+ return err;
+ }
+
+ err = clk_set_rate(clk_pll_a_out0, bitclock);
+ if (err) {
+ pr_err(PREFIX "Can't set pll_a_out0 rate: %d\n", err);
+ return err;
+ }
+
+ err = clk_set_rate(clk_i2s1, bitclock);
+ if (err) {
+ pr_err(PREFIX "Can't set i2s1 rate: %d\n", err);
+ return err;
+ }
+
+ /* Don't set audio/audio_2x rate; they're locked to pll_a_out0 */
+
+ err = clk_enable(clk_pll_a);
+ if (err) {
+ pr_err(PREFIX "Can't enable pll_a: %d\n", err);
+ return err;
+ }
+
+ err = clk_enable(clk_pll_a_out0);
+ if (err) {
+ pr_err(PREFIX "Can't enable pll_a_out0: %d\n", err);
+ return err;
+ }
+
+ err = clk_enable(clk_i2s1);
+ if (err) {
+ pr_err(PREFIX "Can't enable i2s1: %d\n", err);
+ return err;
+ }
+
+ err = clk_enable(clk_audio);
+ if (err) {
+ pr_err(PREFIX "Can't enable audio: %d\n", err);
+ return err;
+ }
+
+ err = clk_enable(clk_audio_2x);
+ if (err) {
+ pr_err(PREFIX "Can't enable audio_2x: %d\n", err);
+ return err;
+ }
+
+ err = snd_soc_dai_set_sysclk(codec_dai, 0, bitclock, SND_SOC_CLOCK_IN);
+ if (err < 0) {
+ pr_err(PREFIX "codec_dai clock not set\n");
+ return err;
+ }
+
+ err = snd_soc_dai_set_sysclk(cpu_dai, 0, bitclock, SND_SOC_CLOCK_IN);
+ if (err < 0) {
+ pr_err(PREFIX "cpu_dai clock not set\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) {
+ pr_err(PREFIX "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) {
+ pr_err(PREFIX "cpu_dai fmt 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_dai_link harmony_wm8903_dai = {
+ .name = "WM8903",
+ .stream_name = "WM8903 PCM",
+ .cpu_dai = &tegra_i2s_dai[0],
+ .codec_dai = &wm8903_dai,
+ .ops = &harmony_asoc_ops,
+};
+
+static struct snd_soc_card snd_soc_harmony = {
+ .name = "tegra-harmony",
+ .platform = &tegra_soc_platform,
+ .dai_link = &harmony_wm8903_dai,
+ .num_links = 1,
+};
+
+static struct snd_soc_device harmony_wm8903_snd_devdata = {
+ .card = &snd_soc_harmony,
+ .codec_dev = &soc_codec_dev_wm8903,
+};
+
+static int __init harmony_soc_modinit(void)
+{
+ int ret;
+
+ if (!machine_is_harmony()) {
+ pr_err("Harmony ASoC: Not running on Tegra Harmony!\n");
+ return -ENODEV;
+ }
+
+ clk_pll_a = clk_get_sys(NULL, "pll_a");
+ if (IS_ERR_OR_NULL(clk_pll_a)) {
+ pr_err("Can't retrieve clk pll_a\n");
+ ret = PTR_ERR(clk_pll_a);
+ goto err_clock_put;
+ }
+
+ clk_pll_a_out0 = clk_get_sys(NULL, "pll_a_out0");
+ if (IS_ERR_OR_NULL(clk_pll_a_out0)) {
+ pr_err("Can't retrieve clk pll_a_out0\n");
+ ret = PTR_ERR(clk_pll_a_out0);
+ goto err_clock_put;
+ }
+
+ clk_i2s1 = clk_get_sys("tegra-i2s.0", NULL);
+ if (IS_ERR_OR_NULL(clk_i2s1)) {
+ pr_err("Can't retrieve clk i2s1\n");
+ ret = PTR_ERR(clk_i2s1);
+ goto err_clock_put;
+ }
+
+ clk_audio = clk_get_sys(NULL, "audio");
+ if (IS_ERR_OR_NULL(clk_audio)) {
+ pr_err("Can't retrieve clk audio\n");
+ ret = PTR_ERR(clk_audio);
+ goto err_clock_put;
+ }
+
+ clk_audio_2x = clk_get_sys(NULL, "audio_2x");
+ if (IS_ERR_OR_NULL(clk_audio_2x)) {
+ pr_err("Can't retrieve clk audio_2x\n");
+ ret = PTR_ERR(clk_audio_2x);
+ goto err_clock_put;
+ }
+
+ /* IDs 0..n-1, params 1..n */
+ ret = tegra_das_configure_dap_for_dac(0, TEGRA_DAS_DAP_SEL_DAC1);
+ if (ret) {
+ pr_err("Harmony ASoC: tegra_das_configure_dap_for_dac failed\n");
+ goto err_clock_put;
+ }
+
+ ret = tegra_das_configure_dac(0, TEGRA_DAS_DAC_SEL_DAP1);
+ if (ret) {
+ pr_err("Harmony ASoC: tegra_das_configure_dac failed\n");
+ goto err_clock_put;
+ }
+
+ /*
+ * Create and register platform device
+ */
+ harmony_snd_device = platform_device_alloc("soc-audio", -1);
+ if (harmony_snd_device == NULL) {
+ pr_err("Harmony ASoC: platform_device_alloc failed\n");
+ ret = -ENOMEM;
+ goto err_device_put;
+ }
+
+ platform_set_drvdata(harmony_snd_device, &harmony_wm8903_snd_devdata);
+ harmony_wm8903_snd_devdata.dev = &harmony_snd_device->dev;
+
+ ret = platform_device_add(harmony_snd_device);
+ if (ret) {
+ pr_err("Harmony ASoC: platform_device_add failed (%d)\n",
+ ret);
+ goto err_device_put;
+ }
+
+ return 0;
+
+err_device_put:
+ if (harmony_snd_device != NULL) {
+ platform_device_put(harmony_snd_device);
+ harmony_snd_device = NULL;
+ }
+err_clock_put:
+ if (!IS_ERR_OR_NULL(clk_audio_2x))
+ clk_put(clk_audio_2x);
+ if (!IS_ERR_OR_NULL(clk_audio))
+ clk_put(clk_audio);
+ if (!IS_ERR_OR_NULL(clk_i2s1))
+ clk_put(clk_i2s1);
+ if (!IS_ERR_OR_NULL(clk_pll_a_out0))
+ clk_put(clk_pll_a_out0);
+ if (!IS_ERR_OR_NULL(clk_pll_a))
+ clk_put(clk_pll_a);
+ return ret;
+}
+module_init(harmony_soc_modinit);
+
+static void __exit harmony_soc_modexit(void)
+{
+ platform_device_unregister(harmony_snd_device);
+
+ clk_put(clk_audio_2x);
+ clk_put(clk_audio);
+ clk_put(clk_i2s1);
+ clk_put(clk_pll_a_out0);
+ clk_put(clk_pll_a);
+
+ harmony_snd_device = NULL;
+}
+module_exit(harmony_soc_modexit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Harmony machine ASoC driver");
+MODULE_LICENSE("GPL");
--
1.7.0.4
nvpublic
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