ASoC: add saarb machine driver for 88pm860x

88PM860x codec is used in Marvell saarb development board. 88PM860x codec
is used as master mode for SSP communication. Only I2S format is supported.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/pxa/Kconfig

@@ -117,6 +117,15 @@ config SND_PXA2XX_SOC_PALM27X
 	  Say Y if you want to add support for SoC audio on
 	  Palm T|X, T5, E2 or LifeDrive handheld computer.
 
+config SND_SOC_SAARB
+	tristate "SoC Audio support for Marvell Saarb"
+	depends on SND_PXA2XX_SOC && MACH_SAARB
+	select SND_PXA_SOC_SSP
+	select SND_SOC_88PM860X
+	help
+	  Say Y if you want to add support for SoC audio on the
+	  Marvell Saarb reference platform.
+
 config SND_SOC_TAVOREVB3
 	tristate "SoC Audio support for Marvell Tavor EVB3"
 	depends on SND_PXA2XX_SOC && MACH_TAVOREVB3

sound/soc/pxa/Makefile

@@ -19,6 +19,7 @@ snd-soc-e800-objs := e800_wm9712.o
 snd-soc-spitz-objs := spitz.o
 snd-soc-em-x270-objs := em-x270.o
 snd-soc-palm27x-objs := palm27x.o
+snd-soc-saarb-objs := saarb.o
 snd-soc-tavorevb3-objs := tavorevb3.o
 snd-soc-zylonite-objs := zylonite.o
 snd-soc-magician-objs := magician.o
@@ -39,6 +40,7 @@ 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_Z2) += snd-soc-z2.o
+obj-$(CONFIG_SND_SOC_SAARB) += snd-soc-saarb.o
 obj-$(CONFIG_SND_SOC_TAVOREVB3) += snd-soc-tavorevb3.o
 obj-$(CONFIG_SND_SOC_ZYLONITE) += snd-soc-zylonite.o
 obj-$(CONFIG_SND_PXA2XX_SOC_IMOTE2) += snd-soc-imote2.o

sound/soc/pxa/saarb.c

@@ -0,0 +1,200 @@
+/*
+ * saarb.c -- SoC audio for saarb
+ *
+ * Copyright (C) 2010 Marvell International Ltd.
+ * 	Haojian Zhuang <haojian.zhuang@marvell.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.
+ */
+
+#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 <sound/jack.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/88pm860x-codec.h"
+#include "pxa-ssp.h"
+
+static int saarb_pm860x_init(struct snd_soc_pcm_runtime *rtd);
+
+static struct platform_device *saarb_snd_device;
+
+static struct snd_soc_jack hs_jack, mic_jack;
+
+static struct snd_soc_jack_pin hs_jack_pins[] = {
+	{ .pin = "Headset Stereophone",	.mask = SND_JACK_HEADPHONE, },
+};
+
+static struct snd_soc_jack_pin mic_jack_pins[] = {
+	{ .pin = "Headset Mic 2",	.mask = SND_JACK_MICROPHONE, },
+};
+
+/* saarb machine dapm widgets */
+static const struct snd_soc_dapm_widget saarb_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone Stereophone", NULL),
+	SND_SOC_DAPM_LINE("Lineout Out 1", NULL),
+	SND_SOC_DAPM_LINE("Lineout Out 2", NULL),
+	SND_SOC_DAPM_SPK("Ext Speaker", NULL),
+	SND_SOC_DAPM_MIC("Ext Mic 1", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Ext Mic 3", NULL),
+};
+
+/* saarb machine audio map */
+static const struct snd_soc_dapm_route audio_map[] = {
+	{"Headset Stereophone", NULL, "HS1"},
+	{"Headset Stereophone", NULL, "HS2"},
+
+	{"Ext Speaker", NULL, "LSP"},
+	{"Ext Speaker", NULL, "LSN"},
+
+	{"Lineout Out 1", NULL, "LINEOUT1"},
+	{"Lineout Out 2", NULL, "LINEOUT2"},
+
+	{"MIC1P", NULL, "Mic1 Bias"},
+	{"MIC1N", NULL, "Mic1 Bias"},
+	{"Mic1 Bias", NULL, "Ext Mic 1"},
+
+	{"MIC2P", NULL, "Mic1 Bias"},
+	{"MIC2N", NULL, "Mic1 Bias"},
+	{"Mic1 Bias", NULL, "Headset Mic 2"},
+
+	{"MIC3P", NULL, "Mic3 Bias"},
+	{"MIC3N", NULL, "Mic3 Bias"},
+	{"Mic3 Bias", NULL, "Ext Mic 3"},
+};
+
+static int saarb_i2s_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 width = snd_pcm_format_physical_width(params_format(params));
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_NET_PLL, 0,
+				     PM860X_CLK_DIR_OUT);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 0, PM860X_CLK_DIR_OUT);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 3, 3, 2, width);
+
+	return ret;
+}
+
+static struct snd_soc_ops saarb_i2s_ops = {
+	.hw_params	= saarb_i2s_hw_params,
+};
+
+static struct snd_soc_dai_link saarb_dai[] = {
+	{
+		.name		= "88PM860x I2S",
+		.stream_name	= "I2S Audio",
+		.cpu_dai_name	= "pxa-ssp-dai.1",
+		.codec_dai_name	= "88pm860x-i2s",
+		.platform_name	= "pxa-pcm-audio",
+		.codec_name	= "88pm860x-codec",
+		.init		= saarb_pm860x_init,
+		.ops		= &saarb_i2s_ops,
+	},
+};
+
+static struct snd_soc_card snd_soc_card_saarb = {
+	.name = "Saarb",
+	.dai_link = saarb_dai,
+	.num_links = ARRAY_SIZE(saarb_dai),
+};
+
+static int saarb_pm860x_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+	int ret;
+
+	snd_soc_dapm_new_controls(codec, saarb_dapm_widgets,
+				  ARRAY_SIZE(saarb_dapm_widgets));
+	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+	/* connected pins */
+	snd_soc_dapm_enable_pin(codec, "Ext Speaker");
+	snd_soc_dapm_enable_pin(codec, "Ext Mic 1");
+	snd_soc_dapm_enable_pin(codec, "Ext Mic 3");
+	snd_soc_dapm_disable_pin(codec, "Headset Mic 2");
+	snd_soc_dapm_disable_pin(codec, "Headset Stereophone");
+
+	ret = snd_soc_dapm_sync(codec);
+	if (ret)
+		return ret;
+
+	/* Headset jack detection */
+	snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE
+			| SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2,
+			&hs_jack);
+	snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
+			      hs_jack_pins);
+	snd_soc_jack_new(codec, "Microphone Jack", SND_JACK_MICROPHONE,
+			 &mic_jack);
+	snd_soc_jack_add_pins(&mic_jack, ARRAY_SIZE(mic_jack_pins),
+			      mic_jack_pins);
+
+	/* headphone, microphone detection & headset short detection */
+	pm860x_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADPHONE,
+			      SND_JACK_BTN_0, SND_JACK_BTN_1, SND_JACK_BTN_2);
+	pm860x_mic_jack_detect(codec, &hs_jack, SND_JACK_MICROPHONE);
+	return 0;
+}
+
+static int __init saarb_init(void)
+{
+	int ret;
+
+	if (!machine_is_saarb())
+		return -ENODEV;
+	saarb_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!saarb_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(saarb_snd_device, &snd_soc_card_saarb);
+
+	ret = platform_device_add(saarb_snd_device);
+	if (ret)
+		platform_device_put(saarb_snd_device);
+
+	return ret;
+}
+
+static void __exit saarb_exit(void)
+{
+	platform_device_unregister(saarb_snd_device);
+}
+
+module_init(saarb_init);
+module_exit(saarb_exit);
+
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_DESCRIPTION("ALSA SoC 88PM860x Saarb");
+MODULE_LICENSE("GPL");