[alsa-devel] [PATCH 3/4] ASoC: pxa add Marvell Littleton platform audio support
Eric Miao
eric.y.miao at gmail.com
Wed Jun 3 14:35:23 CEST 2009
Signed-off-by: Paul Shen <bshen9 at marvell.com>
Signed-off-by: Eric Miao <eric.miao at marvell.com>
---
sound/soc/pxa/Kconfig | 9 ++
sound/soc/pxa/Makefile | 2 +
sound/soc/pxa/littleton.c | 228 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 239 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/pxa/littleton.c
diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index ad8a10f..a4ad5ba 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -134,3 +134,12 @@ config SND_PXA2XX_SOC_MIOA701
help
Say Y if you want to add support for SoC audio on the
MIO A701.
+
+config SND_PXA2XX_SOC_LITTLETON
+ tristate "SoC Audio support for Marvell littleton"
+ depends on SND_PXA2XX_SOC && MACH_LITTLETON
+ select SND_PXA_SOC_SSP
+ select SND_SOC_DA9034
+ help
+ Say Y if you want to add support for SoC audio on the
+ Marvell Littleton.
diff --git a/sound/soc/pxa/Makefile b/sound/soc/pxa/Makefile
index 4b90c3c..94c719d 100644
--- a/sound/soc/pxa/Makefile
+++ b/sound/soc/pxa/Makefile
@@ -22,6 +22,7 @@ snd-soc-palm27x-objs := palm27x.o
snd-soc-zylonite-objs := zylonite.o
snd-soc-magician-objs := magician.o
snd-soc-mioa701-objs := mioa701_wm9713.o
+snd-soc-littleton-objs := littleton.o
obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o
obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
@@ -34,4 +35,5 @@ obj-$(CONFIG_SND_PXA2XX_SOC_EM_X270) += snd-soc-em-x270.o
obj-$(CONFIG_SND_PXA2XX_SOC_PALM27X) += snd-soc-palm27x.o
obj-$(CONFIG_SND_PXA2XX_SOC_MAGICIAN) += snd-soc-magician.o
obj-$(CONFIG_SND_PXA2XX_SOC_MIOA701) += snd-soc-mioa701.o
+obj-$(CONFIG_SND_PXA2XX_SOC_LITTLETON) += snd-soc-littleton.o
obj-$(CONFIG_SND_SOC_ZYLONITE) += snd-soc-zylonite.o
diff --git a/sound/soc/pxa/littleton.c b/sound/soc/pxa/littleton.c
new file mode 100644
index 0000000..911a5ef
--- /dev/null
+++ b/sound/soc/pxa/littleton.c
@@ -0,0 +1,228 @@
+/*
+ * littleton.c -- SoC audio for Littleton
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *
+ * Author: Paul Shen <bshen9 at marvell.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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <asm/mach-types.h>
+#include <mach/ssp.h>
+#include <mach/regs-ssp.h>
+
+#include "pxa2xx-pcm.h"
+#include "pxa-ssp.h"
+
+static int hifi_mode;
+
+extern struct snd_soc_dai da9034_dais[2];
+extern struct snd_soc_codec_device soc_codec_dev_da9034;
+
+static const char *hifi_mode_select[] = {
+ "HIFI 64FS LEFT_J, SSP CLK Master FRM Master",
+ "HIFI 64FS I2S , SSP CLK Master FRM Master",
+ "HIFI 32FS LEFT_J, SSP CLK Master FRM Master",
+ "HIFI 32FS I2S , SSP CLK Master FRM Master",
+};
+
+static const struct soc_enum littleton_enum[] = {
+ SOC_ENUM_SINGLE_EXT(4, hifi_mode_select),
+};
+
+static int littleton_get_hifi_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = hifi_mode;
+ return 0;
+}
+
+static int littleton_set_hifi_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ hifi_mode = ucontrol->value.integer.value[0];
+ return 1;
+}
+
+static const struct snd_kcontrol_new littleton_da9034_controls[] = {
+ SOC_ENUM_EXT("Hifi Mode Select", littleton_enum[0],
+ littleton_get_hifi_mode, littleton_set_hifi_mode),
+};
+
+static int littleton_da9034_init(struct snd_soc_codec *codec)
+{
+ snd_soc_add_controls(codec, littleton_da9034_controls,
+ ARRAY_SIZE(littleton_da9034_controls));
+ return snd_soc_dapm_sync(codec);
+}
+
+struct ssp_clk_div {
+ unsigned int rate;
+ unsigned int pll;
+ unsigned int scdb;
+ unsigned int acds;
+};
+
+static struct ssp_clk_div littleton_hifi_clk_div_64fs[] = {
+ { 48000, 12288000, PXA_SSP_CLK_SCDB_4, 0 },
+ { 44100, 11289600, PXA_SSP_CLK_SCDB_4, 0 },
+ { 32000, 4096000, PXA_SSP_CLK_SCDB_1, 1 },
+ { 22050, 11289600, PXA_SSP_CLK_SCDB_8, 0 },
+ { 16000, 4096000, PXA_SSP_CLK_SCDB_4, 0 },
+ { 11025, 11289600, PXA_SSP_CLK_SCDB_4, 2 },
+ { 8000, 4096000, PXA_SSP_CLK_SCDB_4, 1 },
+ {},
+};
+
+static struct ssp_clk_div littleton_hifi_clk_div_32fs[] = {
+ { 48000, 12288000, PXA_SSP_CLK_SCDB_4, 1 },
+ { 44100, 11289600, PXA_SSP_CLK_SCDB_4, 1 },
+ { 32000, 4096000, PXA_SSP_CLK_SCDB_1, 2 },
+ { 22050, 11289600, PXA_SSP_CLK_SCDB_8, 1 },
+ { 16000, 4096000, PXA_SSP_CLK_SCDB_4, 1 },
+ { 11025, 11289600, PXA_SSP_CLK_SCDB_8, 2 },
+ { 8000, 4096000, PXA_SSP_CLK_SCDB_8, 1 },
+ {},
+};
+
+static int littleton_hifi_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;
+ struct ssp_clk_div *clkdiv;
+ struct clk *clk_pout;
+ int format;
+
+ clk_pout = clk_get(NULL, "CLK_POUT");
+ if (IS_ERR(clk_pout)) {
+ pr_err("failed to get POUT clock\n");
+ return PTR_ERR(clk_pout);
+ }
+
+ clk_enable(clk_pout);
+
+ switch (hifi_mode) {
+ case 0:
+ format = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS | PXA_SSP_FRM_64FS;
+ clkdiv = littleton_hifi_clk_div_64fs;
+ break;
+ case 1:
+ format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS | PXA_SSP_FRM_64FS;
+ clkdiv = littleton_hifi_clk_div_64fs;
+ break;
+ case 2:
+ format = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_IF |
+ SND_SOC_DAIFMT_CBS_CFS | PXA_SSP_FRM_32FS;
+ clkdiv = littleton_hifi_clk_div_32fs;
+ break;
+ case 3:
+ format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS | PXA_SSP_FRM_32FS;
+ clkdiv = littleton_hifi_clk_div_32fs;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_dai_set_fmt(codec_dai, format);
+ snd_soc_dai_set_fmt(cpu_dai, format);
+ snd_soc_dai_set_tdm_slot(cpu_dai, 3, 2);
+
+ for (; clkdiv->rate; clkdiv++) {
+ if (clkdiv->rate == params_rate(params))
+ break;
+ }
+
+ if (!clkdiv->rate)
+ return -EINVAL;
+
+ snd_soc_dai_set_pll(cpu_dai, 0, 0, clkdiv->pll);
+ snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
+ snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_SCDB, clkdiv->scdb);
+ snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_ACDS, clkdiv->acds);
+ return 0;
+}
+
+static struct snd_soc_ops littleton_hifi_ops = {
+ .hw_params = littleton_hifi_hw_params,
+};
+
+static struct snd_soc_dai_link littleton_dai[] = {
+ /* HiFi */
+ {
+ .name = "DA9034 HiFi",
+ .stream_name = "DA9034 HiFi",
+ .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3],
+ .codec_dai = &da9034_dais[0],
+ .init = littleton_da9034_init,
+ .ops = &littleton_hifi_ops,
+ },
+};
+
+static struct snd_soc_card littleton = {
+ .name = "Littleton",
+ .platform = &pxa2xx_soc_platform,
+ .dai_link = littleton_dai,
+ .num_links = ARRAY_SIZE(littleton_dai),
+};
+
+static struct snd_soc_device littleton_snd_devdata = {
+ .card = &littleton,
+ .codec_dev = &soc_codec_dev_da9034,
+};
+
+static struct platform_device *littleton_snd_device;
+
+static int __init littleton_audio_init(void)
+{
+ int ret;
+
+ if (!machine_is_littleton()) {
+ pr_err("Only Littleton hardware supported by ASoC driver\n");
+ return -ENODEV;
+ }
+
+ littleton_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!littleton_snd_device)
+ return -ENOMEM;
+
+ platform_set_drvdata(littleton_snd_device, &littleton_snd_devdata);
+ littleton_snd_devdata.dev = &littleton_snd_device->dev;
+
+ ret = platform_device_add(littleton_snd_device);
+ if (ret != 0)
+ platform_device_put(littleton_snd_device);
+
+ return ret;
+}
+
+static void __exit littleton_audio_exit(void)
+{
+ platform_device_unregister(littleton_snd_device);
+}
+
+module_init(littleton_audio_init);
+module_exit(littleton_audio_exit);
+
+MODULE_AUTHOR("Paul Shen <bshen9 at marvell.com>");
+MODULE_DESCRIPTION("ALSA SoC Da9034 Littleton");
+MODULE_LICENSE("GPL");
--
1.6.0.4
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