ALSA: ARM: add Raumfeld audio support

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 346 insertions, 0 deletions

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index d4f4031afa33..376e14a9c273 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -118,6 +118,15 @@ config SND_SOC_ZYLONITE
           Say Y if you want to add support for SoC audio on the
           Marvell Zylonite reference platform.
 
+config SND_SOC_RAUMFELD
+        tristate "SoC Audio support Raumfeld audio adapter"
+        depends on SND_PXA2XX_SOC && (MACH_RAUMFELD_SPEAKER || MACH_RAUMFELD_CONNECTOR)
+        select SND_PXA_SOC_SSP
+        select SND_SOC_CS4270
+        select SND_SOC_AK4104
+        help
+          Say Y if you want to add support for SoC audio on Raumfeld devices
+
 config SND_PXA2XX_SOC_MAGICIAN
         tristate "SoC Audio support for HTC Magician"
         depends on SND_PXA2XX_SOC && MACH_MAGICIAN
diff --git a/sound/soc/pxa/Makefile b/sound/soc/pxa/Makefile
index 6e096b480335..f3e08fd40ca2 100644
--- a/sound/soc/pxa/Makefile
+++ b/sound/soc/pxa/Makefile
@@ -23,6 +23,7 @@ snd-soc-zylonite-objs := zylonite.o
 snd-soc-magician-objs := magician.o
 snd-soc-mioa701-objs := mioa701_wm9713.o
 snd-soc-imote2-objs := imote2.o
+snd-soc-raumfeld-objs := raumfeld.o
 
 obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o
 obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
@@ -37,3 +38,4 @@ obj-$(CONFIG_SND_PXA2XX_SOC_MAGICIAN) += snd-soc-magician.o
 obj-$(CONFIG_SND_PXA2XX_SOC_MIOA701) += snd-soc-mioa701.o
 obj-$(CONFIG_SND_SOC_ZYLONITE) += snd-soc-zylonite.o
 obj-$(CONFIG_SND_PXA2XX_SOC_IMOTE2) += snd-soc-imote2.o
+obj-$(CONFIG_SND_SOC_RAUMFELD) += snd-soc-raumfeld.o
diff --git a/sound/soc/pxa/raumfeld.c b/sound/soc/pxa/raumfeld.c
new file mode 100644
index 000000000000..f272269c05d1
--- /dev/null
+++ b/sound/soc/pxa/raumfeld.c
@@ -0,0 +1,335 @@
+/*
+ * raumfeld_audio.c  --  SoC audio for Raumfeld audio devices
+ *
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ *
+ * based on code from:
+ *
+ *    Wolfson Microelectronics PLC.
+ *    Openedhand Ltd.
+ *    Liam Girdwood <lrg@slimlogic.co.uk>
+ *    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/i2c.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/cs4270.h"
+#include "../codecs/ak4104.h"
+#include "pxa2xx-pcm.h"
+#include "pxa-ssp.h"
+
+#define GPIO_SPDIF_RESET        (38)
+#define GPIO_MCLK_RESET         (111)
+#define GPIO_CODEC_RESET        (120)
+
+static struct i2c_client *max9486_client;
+static struct i2c_board_info max9486_hwmon_info = {
+        I2C_BOARD_INFO("max9485", 0x63),
+};
+
+#define MAX9485_MCLK_FREQ_112896 0x22
+#define MAX9485_MCLK_FREQ_122880 0x23
+
+static void set_max9485_clk(char clk)
+{
+        i2c_master_send(max9486_client, &clk, 1);
+}
+
+static void raumfeld_enable_audio(bool en)
+{
+        if (en) {
+                gpio_set_value(GPIO_MCLK_RESET, 1);
+
+                /* wait some time to let the clocks become stable */
+                msleep(100);
+
+                gpio_set_value(GPIO_SPDIF_RESET, 1);
+                gpio_set_value(GPIO_CODEC_RESET, 1);
+        } else {
+                gpio_set_value(GPIO_MCLK_RESET, 0);
+                gpio_set_value(GPIO_SPDIF_RESET, 0);
+                gpio_set_value(GPIO_CODEC_RESET, 0);
+        }
+}
+
+/* CS4270 */
+static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+
+        set_max9485_clk(MAX9485_MCLK_FREQ_112896);
+
+        return snd_soc_dai_set_sysclk(codec_dai, 0, 11289600, 0);
+}
+
+static int raumfeld_cs4270_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;
+        unsigned int fmt, clk = 0;
+        int ret = 0;
+
+        switch (params_rate(params)) {
+        case 8000:
+        case 16000:
+        case 48000:
+        case 96000:
+                set_max9485_clk(MAX9485_MCLK_FREQ_122880);
+                clk = 12288000;
+                break;
+        case 11025:
+        case 22050:
+        case 44100:
+        case 88200:
+                set_max9485_clk(MAX9485_MCLK_FREQ_112896);
+                clk = 11289600;
+                break;
+        }
+
+        fmt = SND_SOC_DAIFMT_I2S |
+              SND_SOC_DAIFMT_NB_NF |
+              SND_SOC_DAIFMT_CBS_CFS;
+
+        /* setup the CODEC DAI */
+        ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0);
+        if (ret < 0)
+                return ret;
+
+        /* setup the CPU DAI */
+        ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, clk);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, 0, 1);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops raumfeld_cs4270_ops = {
+        .startup = raumfeld_cs4270_startup,
+        .hw_params = raumfeld_cs4270_hw_params,
+};
+
+static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        raumfeld_enable_audio(false);
+        return 0;
+}
+
+static int raumfeld_line_resume(struct platform_device *pdev)
+{
+        raumfeld_enable_audio(true);
+        return 0;
+}
+
+static struct snd_soc_dai_link raumfeld_line_dai = {
+        .name           = "CS4270",
+        .stream_name    = "CS4270",
+        .cpu_dai        = &pxa_ssp_dai[PXA_DAI_SSP1],
+        .codec_dai      = &cs4270_dai,
+        .ops            = &raumfeld_cs4270_ops,
+};
+
+static struct snd_soc_card snd_soc_line_raumfeld = {
+        .name           = "Raumfeld analog",
+        .platform       = &pxa2xx_soc_platform,
+        .dai_link       = &raumfeld_line_dai,
+        .suspend_post   = raumfeld_line_suspend,
+        .resume_pre     = raumfeld_line_resume,
+        .num_links      = 1,
+};
+
+
+/* AK4104 */
+
+static int raumfeld_ak4104_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;
+        int fmt, ret = 0, clk = 0;
+
+        switch (params_rate(params)) {
+        case 8000:
+        case 16000:
+        case 48000:
+        case 96000:
+                set_max9485_clk(MAX9485_MCLK_FREQ_122880);
+                clk = 12288000;
+                break;
+        case 11025:
+        case 22050:
+        case 44100:
+        case 88200:
+                set_max9485_clk(MAX9485_MCLK_FREQ_112896);
+                clk = 11289600;
+                break;
+        }
+
+        fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;
+
+        /* setup the CODEC DAI */
+        ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
+        if (ret < 0)
+                return ret;
+
+        /* setup the CPU DAI */
+        ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, clk);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
+        if (ret < 0)
+                return ret;
+
+        ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, 0, 1);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+static struct snd_soc_ops raumfeld_ak4104_ops = {
+        .hw_params = raumfeld_ak4104_hw_params,
+};
+
+static struct snd_soc_dai_link raumfeld_spdif_dai = {
+        .name           = "ak4104",
+        .stream_name    = "Playback",
+        .cpu_dai        = &pxa_ssp_dai[PXA_DAI_SSP2],
+        .codec_dai      = &ak4104_dai,
+        .ops            = &raumfeld_ak4104_ops,
+};
+
+static struct snd_soc_card snd_soc_spdif_raumfeld = {
+        .name           = "Raumfeld S/PDIF",
+        .platform       = &pxa2xx_soc_platform,
+        .dai_link       = &raumfeld_spdif_dai,
+        .num_links      = 1
+};
+
+/* raumfeld_audio audio subsystem */
+static struct snd_soc_device raumfeld_line_devdata = {
+        .card = &snd_soc_line_raumfeld,
+        .codec_dev = &soc_codec_device_cs4270,
+};
+
+static struct snd_soc_device raumfeld_spdif_devdata = {
+        .card = &snd_soc_spdif_raumfeld,
+        .codec_dev = &soc_codec_device_ak4104,
+};
+
+static struct platform_device *raumfeld_audio_line_device;
+static struct platform_device *raumfeld_audio_spdif_device;
+
+static int __init raumfeld_audio_init(void)
+{
+        int ret;
+
+        if (!machine_is_raumfeld_speaker() &&
+            !machine_is_raumfeld_connector())
+                return 0;
+
+        max9486_client = i2c_new_device(i2c_get_adapter(0),
+                                        &max9486_hwmon_info);
+
+        if (!max9486_client)
+                return -ENOMEM;
+
+        set_max9485_clk(MAX9485_MCLK_FREQ_122880);
+
+        /* LINE */
+        raumfeld_audio_line_device = platform_device_alloc("soc-audio", 0);
+        if (!raumfeld_audio_line_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(raumfeld_audio_line_device,
+                             &raumfeld_line_devdata);
+        raumfeld_line_devdata.dev = &raumfeld_audio_line_device->dev;
+        ret = platform_device_add(raumfeld_audio_line_device);
+        if (ret)
+                platform_device_put(raumfeld_audio_line_device);
+
+        /* no S/PDIF on Speakers */
+        if (machine_is_raumfeld_speaker())
+                return ret;
+
+        /* S/PDIF */
+        raumfeld_audio_spdif_device = platform_device_alloc("soc-audio", 1);
+        if (!raumfeld_audio_spdif_device) {
+                platform_device_put(raumfeld_audio_line_device);
+                return -ENOMEM;
+        }
+
+        platform_set_drvdata(raumfeld_audio_spdif_device,
+                             &raumfeld_spdif_devdata);
+        raumfeld_spdif_devdata.dev = &raumfeld_audio_spdif_device->dev;
+        ret = platform_device_add(raumfeld_audio_spdif_device);
+        if (ret) {
+                platform_device_put(raumfeld_audio_line_device);
+                platform_device_put(raumfeld_audio_spdif_device);
+        }
+
+        raumfeld_enable_audio(true);
+
+        return ret;
+}
+
+static void __exit raumfeld_audio_exit(void)
+{
+        raumfeld_enable_audio(false);
+
+        platform_device_unregister(raumfeld_audio_line_device);
+
+        if (machine_is_raumfeld_connector())
+                platform_device_unregister(raumfeld_audio_spdif_device);
+
+        i2c_unregister_device(max9486_client);
+
+        gpio_free(GPIO_MCLK_RESET);
+        gpio_free(GPIO_CODEC_RESET);
+        gpio_free(GPIO_SPDIF_RESET);
+}
+
+module_init(raumfeld_audio_init);
+module_exit(raumfeld_audio_exit);
+
+/* Module information */
+MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
+MODULE_DESCRIPTION("Raumfeld audio SoC");
+MODULE_LICENSE("GPL");