[ALSA] Add EM-X270 ASoC driver

This patch adds ASoC support for EM-X270 machine.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 113 insertions, 1 deletions

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 18a40dc8ad9d..12f6ac99b04c 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -62,3 +62,12 @@ config SND_PXA2XX_SOC_E800
         help
           Say Y if you want to add support for SoC audio on the
           Toshiba e800 PDA
+
+config SND_PXA2XX_SOC_EM_X270
+        tristate "SoC Audio support for CompuLab EM-x270"
+        depends on SND_PXA2XX_SOC && MACH_EM_X270
+        select SND_PXA2XX_SOC_AC97
+        select SND_SOC_WM9712
+        help
+          Say Y if you want to add support for SoC audio on
+          CompuLab EM-x270.
diff --git a/sound/soc/pxa/Makefile b/sound/soc/pxa/Makefile
index 04e5646f75ba..5bc8edf9dca9 100644
--- a/sound/soc/pxa/Makefile
+++ b/sound/soc/pxa/Makefile
@@ -13,10 +13,11 @@ snd-soc-poodle-objs := poodle.o
 snd-soc-tosa-objs := tosa.o
 snd-soc-e800-objs := e800_wm9712.o
 snd-soc-spitz-objs := spitz.o
+snd-soc-em-x270-objs := em-x270.o
 
 obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o
 obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
 obj-$(CONFIG_SND_PXA2XX_SOC_TOSA) += snd-soc-tosa.o
 obj-$(CONFIG_SND_PXA2XX_SOC_E800) += snd-soc-e800.o
 obj-$(CONFIG_SND_PXA2XX_SOC_SPITZ) += snd-soc-spitz.o
-
+obj-$(CONFIG_SND_PXA2XX_SOC_EM_X270) += snd-soc-em-x270.o
diff --git a/sound/soc/pxa/em-x270.c b/sound/soc/pxa/em-x270.c
new file mode 100644
index 000000000000..02dcac39cdf6
--- /dev/null
+++ b/sound/soc/pxa/em-x270.c
@@ -0,0 +1,102 @@
+/*
+ * em-x270.c  --  SoC audio for EM-X270
+ *
+ * Copyright 2007 CompuLab, Ltd.
+ *
+ * Author: Mike Rapoport <mike@compulab.co.il>
+ *
+ * Copied from tosa.c:
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
+ *          Richard Purdie <richard@openedhand.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 <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/audio.h>
+
+#include "../codecs/wm9712.h"
+#include "pxa2xx-pcm.h"
+#include "pxa2xx-ac97.h"
+
+static struct snd_soc_dai_link em_x270_dai[] = {
+        {
+                .name = "AC97",
+                .stream_name = "AC97 HiFi",
+                .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
+                .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
+        },
+        {
+                .name = "AC97 Aux",
+                .stream_name = "AC97 Aux",
+                .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
+                .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
+        },
+};
+
+static struct snd_soc_machine em_x270 = {
+        .name = "EM-X270",
+        .dai_link = em_x270_dai,
+        .num_links = ARRAY_SIZE(em_x270_dai),
+};
+
+static struct snd_soc_device em_x270_snd_devdata = {
+        .machine = &em_x270,
+        .platform = &pxa2xx_soc_platform,
+        .codec_dev = &soc_codec_dev_wm9712,
+};
+
+static struct platform_device *em_x270_snd_device;
+
+static int __init em_x270_init(void)
+{
+        int ret;
+
+        if (!machine_is_em_x270())
+                return -ENODEV;
+
+        em_x270_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!em_x270_snd_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(em_x270_snd_device, &em_x270_snd_devdata);
+        em_x270_snd_devdata.dev = &em_x270_snd_device->dev;
+        ret = platform_device_add(em_x270_snd_device);
+
+        if (ret)
+                platform_device_put(em_x270_snd_device);
+
+        return ret;
+}
+
+static void __exit em_x270_exit(void)
+{
+        platform_device_unregister(em_x270_snd_device);
+}
+
+module_init(em_x270_init);
+module_exit(em_x270_exit);
+
+/* Module information */
+MODULE_AUTHOR("Mike Rapoport");
+MODULE_DESCRIPTION("ALSA SoC EM-X270");
+MODULE_LICENSE("GPL");