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>

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index d4f4031..376e14a 100644 (file)
--- 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 6e096b4..f3e08fd 100644 (file)
--- 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 (file)
index 0000000..f272269
--- /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");