ASoC: kirkwood: Add audio support to hp t5325 thin clients

This patch is adding support for hp t5325 thin clients.
There's a alc5623 codec connected to the i2s interface.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/kirkwood/Kconfig

@@ -18,3 +18,12 @@ config SND_KIRKWOOD_SOC_OPENRD
 	  Say Y if you want to add support for SoC audio on
 	  Openrd Client.
 
+config SND_KIRKWOOD_SOC_T5325
+	tristate "SoC Audio support for HP t5325"
+	depends on SND_KIRKWOOD_SOC && MACH_T5325
+	select SND_KIRKWOOD_SOC_I2S
+	select SND_SOC_ALC5623
+	help
+	  Say Y if you want to add support for SoC audio on
+	  the HP t5325 thin client.
+

sound/soc/kirkwood/Makefile

@@ -5,5 +5,7 @@ obj-$(CONFIG_SND_KIRKWOOD_SOC) += snd-soc-kirkwood.o
 obj-$(CONFIG_SND_KIRKWOOD_SOC_I2S) += snd-soc-kirkwood-i2s.o
 
 snd-soc-openrd-objs := kirkwood-openrd.o
+snd-soc-t5325-objs := kirkwood-t5325.o
 
 obj-$(CONFIG_SND_KIRKWOOD_SOC_OPENRD) += snd-soc-openrd.o
+obj-$(CONFIG_SND_KIRKWOOD_SOC_T5325) += snd-soc-t5325.o

sound/soc/kirkwood/kirkwood-t5325.c

+/*
+ * kirkwood-t5325.c
+ *
+ * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
+ *
+ *  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/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <mach/kirkwood.h>
+#include <plat/audio.h>
+#include <asm/mach-types.h>
+#include "../codecs/alc5623.h"
+
+static int t5325_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;
+	int ret;
+	unsigned int freq, fmt;
+
+	fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS;
+	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+	if (ret < 0)
+		return ret;
+
+	freq = params_rate(params) * 256;
+
+	return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
+
+}
+
+static struct snd_soc_ops t5325_ops = {
+	.hw_params = t5325_hw_params,
+};
+
+static const struct snd_soc_dapm_widget t5325_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_SPK("Speaker", NULL),
+	SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route t5325_route[] = {
+	{ "Headphone Jack",	NULL,	"HPL" },
+	{ "Headphone Jack",	NULL,	"HPR" },
+
+	{"Speaker",		NULL,	"SPKOUT"},
+	{"Speaker",		NULL,	"SPKOUTN"},
+
+	{ "MIC1",		NULL,	"Mic Jack" },
+	{ "MIC2",		NULL,	"Mic Jack" },
+};
+
+static int t5325_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+
+	snd_soc_dapm_new_controls(codec, t5325_dapm_widgets,
+				ARRAY_SIZE(t5325_dapm_widgets));
+
+	snd_soc_dapm_add_routes(codec, t5325_route, ARRAY_SIZE(t5325_route));
+
+	snd_soc_dapm_enable_pin(codec, "Mic Jack");
+	snd_soc_dapm_enable_pin(codec, "Headphone Jack");
+	snd_soc_dapm_enable_pin(codec, "Speaker");
+
+	snd_soc_dapm_sync(codec);
+
+	return 0;
+}
+
+static struct snd_soc_dai_link t5325_dai[] = {
+{
+	.name = "ALC5621",
+	.stream_name = "ALC5621 HiFi",
+	.cpu_dai_name = "kirkwood-i2s",
+	.platform_name = "kirkwood-pcm-audio",
+	.codec_dai_name = "alc5621-hifi",
+	.codec_name = "alc562x-codec.0-001a",
+	.ops = &t5325_ops,
+	.init = t5325_dai_init,
+},
+};
+
+
+static struct snd_soc_card t5325 = {
+	.name = "t5325",
+	.dai_link = t5325_dai,
+	.num_links = ARRAY_SIZE(t5325_dai),
+};
+
+static struct platform_device *t5325_snd_device;
+
+static int __init t5325_init(void)
+{
+	int ret;
+
+	if (!machine_is_t5325())
+		return 0;
+
+	t5325_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!t5325_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(t5325_snd_device,
+			&t5325);
+
+	ret = platform_device_add(t5325_snd_device);
+	if (ret) {
+		printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
+		platform_device_put(t5325_snd_device);
+	}
+
+	return ret;
+}
+module_init(t5325_init);
+
+static void __exit t5325_exit(void)
+{
+	platform_device_unregister(t5325_snd_device);
+}
+module_exit(t5325_exit);
+
+MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
+MODULE_DESCRIPTION("ALSA SoC t5325 audio client");
+MODULE_LICENSE("GPL");