Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / samsung / jive_wm8750.c

diff --git a/kernel/sound/soc/samsung/jive_wm8750.c b/kernel/sound/soc/samsung/jive_wm8750.c
new file mode 100644 (file)
index 0000000..7fcb51f
--- /dev/null
+++ b/kernel/sound/soc/samsung/jive_wm8750.c
@@ -0,0 +1,146 @@
+/* sound/soc/samsung/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 <sound/soc.h>
+
+#include <asm/mach-types.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_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;
+       struct s3c_i2sv2_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;
+       }
+
+       s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
+                               s3c_i2sv2_get_clock(cpu_dai));
+
+       /* 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 = {
+       .hw_params      = jive_hw_params,
+};
+
+static struct snd_soc_dai_link jive_dai = {
+       .name           = "wm8750",
+       .stream_name    = "WM8750",
+       .cpu_dai_name   = "s3c2412-i2s",
+       .codec_dai_name = "wm8750-hifi",
+       .platform_name  = "s3c2412-i2s",
+       .codec_name     = "wm8750.0-001a",
+       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                         SND_SOC_DAIFMT_CBS_CFS,
+       .ops            = &jive_ops,
+};
+
+/* jive audio machine driver */
+static struct snd_soc_card snd_soc_machine_jive = {
+       .name           = "Jive",
+       .owner          = THIS_MODULE,
+       .dai_link       = &jive_dai,
+       .num_links      = 1,
+
+       .dapm_widgets   = wm8750_dapm_widgets,
+       .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
+       .dapm_routes    = audio_map,
+       .num_dapm_routes = ARRAY_SIZE(audio_map),
+       .fully_routed   = true,
+};
+
+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, &snd_soc_machine_jive);
+       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");