ASoC: Add Lowland machine driver

The Lowland platform is based on the Cragganmore system like Speyside but
uses the WM5100 audio CODEC.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 255 insertions, 0 deletions

diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index 53aaa69eda03..71f38de18222 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -198,3 +198,10 @@ config SND_SOC_SPEYSIDE_WM8962
         depends on SND_SOC_SAMSUNG && MACH_WLF_CRAGG_6410
         select SND_SAMSUNG_I2S
         select SND_SOC_WM8962
+
+config SND_SOC_LOWLAND
+        tristate "Audio support for Wolfson Lowland"
+        depends on SND_SOC_SAMSUNG && MACH_WLF_CRAGG_6410
+        select SND_SAMSUNG_I2S
+        select SND_SOC_WM5100
+        select SND_SOC_WM9081
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 8509d3c4366e..7802c25db775 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -40,6 +40,7 @@ snd-soc-smdk-wm8580pcm-objs := smdk_wm8580pcm.o
 snd-soc-smdk-wm8994pcm-objs := smdk_wm8994pcm.o
 snd-soc-speyside-objs := speyside.o
 snd-soc-speyside-wm8962-objs := speyside_wm8962.o
+snd-soc-lowland-objs := lowland.o
 
 obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o
 obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
@@ -61,3 +62,4 @@ obj-$(CONFIG_SND_SOC_SMDK_WM8580_PCM) += snd-soc-smdk-wm8580pcm.o
 obj-$(CONFIG_SND_SOC_SMDK_WM8994_PCM) += snd-soc-smdk-wm8994pcm.o
 obj-$(CONFIG_SND_SOC_SPEYSIDE) += snd-soc-speyside.o
 obj-$(CONFIG_SND_SOC_SPEYSIDE_WM8962) += snd-soc-speyside-wm8962.o
+obj-$(CONFIG_SND_SOC_LOWLAND) += snd-soc-lowland.o
diff --git a/sound/soc/samsung/lowland.c b/sound/soc/samsung/lowland.c
new file mode 100644
index 000000000000..eff1b4b65df4
--- /dev/null
+++ b/sound/soc/samsung/lowland.c
@@ -0,0 +1,246 @@
+/*
+ * Lowland audio support
+ *
+ * Copyright 2011 Wolfson Microelectronics
+ *
+ * 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 <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+
+#include "../codecs/wm5100.h"
+#include "../codecs/wm9081.h"
+
+#define MCLK1_RATE (44100 * 512)
+#define CLKOUT_RATE (44100 * 256)
+
+static int lowland_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 *cpu_dai = rtd->cpu_dai;
+        struct snd_soc_dai *codec_dai = rtd->codec_dai;
+        int 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_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
+                                         | SND_SOC_DAIFMT_NB_NF
+                                         | SND_SOC_DAIFMT_CBM_CFM);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops lowland_ops = {
+        .hw_params = lowland_hw_params,
+};
+
+static struct snd_soc_jack lowland_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin lowland_headset_pins[] = {
+        {
+                .pin = "Headphone",
+                .mask = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
+        },
+        {
+                .pin = "Headset Mic",
+                .mask = SND_JACK_MICROPHONE,
+        },
+};
+
+static int lowland_wm5100_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct snd_soc_codec *codec = rtd->codec;
+        int ret;
+
+        ret = snd_soc_codec_set_sysclk(codec, WM5100_CLK_SYSCLK,
+                                       WM5100_CLKSRC_MCLK1, MCLK1_RATE,
+                                       SND_SOC_CLOCK_IN);
+        if (ret < 0) {
+                pr_err("Failed to set SYSCLK clock source: %d\n", ret);
+                return ret;
+        }
+
+        /* Clock OPCLK, used by the other audio components. */
+        ret = snd_soc_codec_set_sysclk(codec, WM5100_CLK_OPCLK, 0,
+                                       CLKOUT_RATE, 0);
+        if (ret < 0) {
+                pr_err("Failed to set OPCLK rate: %d\n", ret);
+                return ret;
+        }
+
+        ret = snd_soc_jack_new(codec, "Headset",
+                               SND_JACK_LINEOUT | SND_JACK_HEADSET |
+                               SND_JACK_BTN_0,
+                               &lowland_headset);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_jack_add_pins(&lowland_headset,
+                                    ARRAY_SIZE(lowland_headset_pins),
+                                    lowland_headset_pins);
+        if (ret)
+                return ret;
+
+        wm5100_detect(codec, &lowland_headset);
+
+        return 0;
+}
+
+static struct snd_soc_dai_link lowland_dai[] = {
+        {
+                .name = "CPU",
+                .stream_name = "CPU",
+                .cpu_dai_name = "samsung-i2s.0",
+                .codec_dai_name = "wm5100-aif1",
+                .platform_name = "samsung-audio",
+                .codec_name = "wm5100.1-001a",
+                .ops = &lowland_ops,
+                .init = lowland_wm5100_init,
+        },
+        {
+                .name = "Baseband",
+                .stream_name = "Baseband",
+                .cpu_dai_name = "wm5100-aif2",
+                .codec_dai_name = "wm1250-ev1",
+                .codec_name = "wm1250-ev1.1-0027",
+                .ops = &lowland_ops,
+                .ignore_suspend = 1,
+        },
+};
+
+static int lowland_wm9081_init(struct snd_soc_dapm_context *dapm)
+{
+        snd_soc_dapm_nc_pin(dapm, "LINEOUT");
+
+        /* At any time the WM9081 is active it will have this clock */
+        return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0,
+                                        CLKOUT_RATE, 0);
+}
+
+static struct snd_soc_aux_dev lowland_aux_dev[] = {
+        {
+                .name = "wm9081",
+                .codec_name = "wm9081.1-006c",
+                .init = lowland_wm9081_init,
+        },
+};
+
+static struct snd_soc_codec_conf lowland_codec_conf[] = {
+        {
+                .dev_name = "wm9081.1-006c",
+                .name_prefix = "Sub",
+        },
+};
+
+static const struct snd_kcontrol_new controls[] = {
+        SOC_DAPM_PIN_SWITCH("Main Speaker"),
+        SOC_DAPM_PIN_SWITCH("Main DMIC"),
+        SOC_DAPM_PIN_SWITCH("Main AMIC"),
+        SOC_DAPM_PIN_SWITCH("WM1250 Input"),
+        SOC_DAPM_PIN_SWITCH("WM1250 Output"),
+        SOC_DAPM_PIN_SWITCH("Headphone"),
+};
+
+static struct snd_soc_dapm_widget widgets[] = {
+        SND_SOC_DAPM_HP("Headphone", NULL),
+        SND_SOC_DAPM_MIC("Headset Mic", NULL),
+
+        SND_SOC_DAPM_SPK("Main Speaker", NULL),
+
+        SND_SOC_DAPM_MIC("Main AMIC", NULL),
+        SND_SOC_DAPM_MIC("Main DMIC", NULL),
+};
+
+static struct snd_soc_dapm_route audio_paths[] = {
+        { "Sub IN1", NULL, "HPOUT2L" },
+        { "Sub IN2", NULL, "HPOUT2R" },
+
+        { "Main Speaker", NULL, "Sub SPKN" },
+        { "Main Speaker", NULL, "Sub SPKP" },
+        { "Main Speaker", NULL, "SPKDAT1" },
+};
+
+static struct snd_soc_card lowland = {
+        .name = "Lowland",
+        .dai_link = lowland_dai,
+        .num_links = ARRAY_SIZE(lowland_dai),
+        .aux_dev = lowland_aux_dev,
+        .num_aux_devs = ARRAY_SIZE(lowland_aux_dev),
+        .codec_conf = lowland_codec_conf,
+        .num_configs = ARRAY_SIZE(lowland_codec_conf),
+
+        .controls = controls,
+        .num_controls = ARRAY_SIZE(controls),
+        .dapm_widgets = widgets,
+        .num_dapm_widgets = ARRAY_SIZE(widgets),
+        .dapm_routes = audio_paths,
+        .num_dapm_routes = ARRAY_SIZE(audio_paths),
+};
+
+static __devinit int lowland_probe(struct platform_device *pdev)
+{
+        struct snd_soc_card *card = &lowland;
+        int ret;
+
+        card->dev = &pdev->dev;
+
+        ret = snd_soc_register_card(card);
+        if (ret) {
+                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+                        ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static int __devexit lowland_remove(struct platform_device *pdev)
+{
+        struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+        snd_soc_unregister_card(card);
+
+        return 0;
+}
+
+static struct platform_driver lowland_driver = {
+        .driver = {
+                .name = "lowland",
+                .owner = THIS_MODULE,
+                .pm = &snd_soc_pm_ops,
+        },
+        .probe = lowland_probe,
+        .remove = __devexit_p(lowland_remove),
+};
+
+static int __init lowland_audio_init(void)
+{
+        return platform_driver_register(&lowland_driver);
+}
+module_init(lowland_audio_init);
+
+static void __exit lowland_audio_exit(void)
+{
+        platform_driver_unregister(&lowland_driver);
+}
+module_exit(lowland_audio_exit);
+
+MODULE_DESCRIPTION("Lowland audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:lowland");