ASoC: Add JIVE audio support

Add support for the Jive's WM8750 codec attached via the S3C2412 IIS.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 216 insertions, 0 deletions

diff --git a/sound/soc/s3c24xx/jive_wm8750.c b/sound/soc/s3c24xx/jive_wm8750.c
new file mode 100644
index 000000000000..fe466c1f71ec
--- /dev/null
+++ b/sound/soc/s3c24xx/jive_wm8750.c
@@ -0,0 +1,216 @@
+/* sound/soc/s3c24xx/jive_wm8750.c
+ *
+ * Copyright 2007,2008 Simtec Electronics
+ *
+ * Based on sound/soc/pxa/spitz.c
+ *      Copyright 2005 Wolfson Microelectronics PLC.
+ *      Copyright 2005 Openedhand Ltd.
+ *
+ * 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/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+
+#include "s3c24xx-pcm.h"
+#include "s3c2412-i2s.h"
+
+#include "../codecs/wm8750.h"
+
+static const struct snd_soc_dapm_route audio_map[] = {
+        { "Headphone Jack", NULL, "LOUT1" },
+        { "Headphone Jack", NULL, "ROUT1" },
+        { "Internal Speaker", NULL, "LOUT2" },
+        { "Internal Speaker", NULL, "ROUT2" },
+        { "LINPUT1", NULL, "Line Input" },
+        { "RINPUT1", NULL, "Line Input" },
+};
+
+static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
+        SND_SOC_DAPM_HP("Headphone Jack", NULL),
+        SND_SOC_DAPM_SPK("Internal Speaker", NULL),
+        SND_SOC_DAPM_LINE("Line In", NULL),
+};
+
+static int jive_startup(struct snd_pcm_substream *substream)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_codec *codec = rtd->socdev->codec;
+
+        snd_soc_dapm_enable_pin(codec, "Headphone Jack");
+        snd_soc_dapm_enable_pin(codec, "Internal Speaker");
+        snd_soc_dapm_enable_pin(codec, "Line In");
+
+        snd_soc_dapm_sync(codec);
+
+        return 0;
+}
+
+static int jive_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 s3c2412_rate_calc div;
+        unsigned int clk = 0;
+        int ret = 0;
+
+        switch (params_rate(params)) {
+        case 8000:
+        case 16000:
+        case 48000:
+        case 96000:
+                clk = 12288000;
+                break;
+        case 11025:
+        case 22050:
+        case 44100:
+                clk = 11289600;
+                break;
+        }
+
+        s3c2412_iis_calc_rate(&div, NULL, params_rate(params),
+                              s3c2412_get_iisclk());
+
+        /* set codec DAI configuration */
+        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+                                  SND_SOC_DAIFMT_NB_NF |
+                                  SND_SOC_DAIFMT_CBS_CFS);
+        if (ret < 0)
+                return ret;
+
+        /* set cpu DAI configuration */
+        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+                                  SND_SOC_DAIFMT_NB_NF |
+                                  SND_SOC_DAIFMT_CBS_CFS);
+        if (ret < 0)
+                return ret;
+
+        /* set the codec system clock for DAC and ADC */
+        ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
+                                     SND_SOC_CLOCK_IN);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
+                                     div.clk_div - 1);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops jive_ops = {
+        .startup        = jive_startup,
+        .hw_params      = jive_hw_params,
+};
+
+static int jive_wm8750_init(struct snd_soc_codec *codec)
+{
+        int err;
+
+        /* These endpoints are not being used. */
+        snd_soc_dapm_disable_pin(codec, "LINPUT2");
+        snd_soc_dapm_disable_pin(codec, "RINPUT2");
+        snd_soc_dapm_disable_pin(codec, "LINPUT3");
+        snd_soc_dapm_disable_pin(codec, "RINPUT3");
+        snd_soc_dapm_disable_pin(codec, "OUT3");
+        snd_soc_dapm_disable_pin(codec, "MONO");
+
+        /* Add jive specific widgets */
+        err = snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
+                                        ARRAY_SIZE(wm8750_dapm_widgets));
+        if (err) {
+                printk(KERN_ERR "%s: failed to add widgets (%d)\n",
+                       __func__, err);
+                return err;
+        }
+
+        snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+        snd_soc_dapm_sync(codec);
+
+        return 0;
+}
+
+static struct snd_soc_dai_link jive_dai = {
+        .name           = "wm8750",
+        .stream_name    = "WM8750",
+        .cpu_dai        = &s3c2412_i2s_dai,
+        .codec_dai      = &wm8750_dai,
+        .init           = jive_wm8750_init,
+        .ops            = &jive_ops,
+};
+
+/* jive audio machine driver */
+static struct snd_soc_machine snd_soc_machine_jive = {
+        .name           = "Jive",
+        .dai_link       = &jive_dai,
+        .num_links      = 1,
+};
+
+/* jive audio private data */
+static struct wm8750_setup_data jive_wm8750_setup = {
+};
+
+/* jive audio subsystem */
+static struct snd_soc_device jive_snd_devdata = {
+        .machine        = &snd_soc_machine_jive,
+        .platform       = &s3c24xx_soc_platform,
+        .codec_dev      = &soc_codec_dev_wm8750_spi,
+        .codec_data     = &jive_wm8750_setup,
+};
+
+static struct platform_device *jive_snd_device;
+
+static int __init jive_init(void)
+{
+        int ret;
+
+        if (!machine_is_jive())
+                return 0;
+
+        printk("JIVE WM8750 Audio support\n");
+
+        jive_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!jive_snd_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(jive_snd_device, &jive_snd_devdata);
+        jive_snd_devdata.dev = &jive_snd_device->dev;
+        ret = platform_device_add(jive_snd_device);
+
+        if (ret)
+                platform_device_put(jive_snd_device);
+
+        return ret;
+}
+
+static void __exit jive_exit(void)
+{
+        platform_device_unregister(jive_snd_device);
+}
+
+module_init(jive_init);
+module_exit(jive_exit);
+
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
+MODULE_LICENSE("GPL");