ASoC: Intel: Add Broadwell Machine support

Add support for Broadwell based machines with SST DSP audio.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Jie Yang <yang.jie@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

3 files changed, 265 insertions, 0 deletions

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index c30fedb3e149..0b305f9da3db 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -58,3 +58,15 @@ config SND_SOC_INTEL_BYT_MAX98090_MACH
         help
           This adds audio driver for Intel Baytrail platform based boards
           with the MAX98090 audio codec.
+
+config SND_SOC_INTEL_BROADWELL_MACH
+        tristate "ASoC Audio DSP support for Intel Broadwell Wildcatpoint"
+        depends on SND_SOC_INTEL_SST && X86_INTEL_LPSS
+        select SND_SOC_INTEL_HASWELL
+        select SND_COMPRESS_OFFLOAD
+        select SND_SOC_RT286
+        help
+          This adds support for the Wilcatpoint Audio DSP on Intel(R) Broadwell
+          Ultrabook platforms.
+          Say Y if you have such a device
+          If unsure select "N".
diff --git a/sound/soc/intel/Makefile b/sound/soc/intel/Makefile
index 4bfca79a42ba..7acbfc43a0c6 100644
--- a/sound/soc/intel/Makefile
+++ b/sound/soc/intel/Makefile
@@ -24,7 +24,9 @@ obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += snd-soc-sst-baytrail-pcm.o
 snd-soc-sst-haswell-objs := haswell.o
 snd-soc-sst-byt-rt5640-mach-objs := byt-rt5640.o
 snd-soc-sst-byt-max98090-mach-objs := byt-max98090.o
+snd-soc-sst-broadwell-objs := broadwell.o
 
 obj-$(CONFIG_SND_SOC_INTEL_HASWELL_MACH) += snd-soc-sst-haswell.o
 obj-$(CONFIG_SND_SOC_INTEL_BYT_RT5640_MACH) += snd-soc-sst-byt-rt5640-mach.o
 obj-$(CONFIG_SND_SOC_INTEL_BYT_MAX98090_MACH) += snd-soc-sst-byt-max98090-mach.o
+obj-$(CONFIG_SND_SOC_INTEL_BROADWELL_MACH) += snd-soc-sst-broadwell.o
diff --git a/sound/soc/intel/broadwell.c b/sound/soc/intel/broadwell.c
new file mode 100644
index 000000000000..0e550f14028f
--- /dev/null
+++ b/sound/soc/intel/broadwell.c
@@ -0,0 +1,251 @@
+/*
+ * Intel Broadwell Wildcatpoint SST Audio
+ *
+ * Copyright (C) 2013, Intel Corporation. All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include "sst-dsp.h"
+#include "sst-haswell-ipc.h"
+
+#include "../codecs/rt286.h"
+
+static const struct snd_soc_dapm_widget broadwell_widgets[] = {
+        SND_SOC_DAPM_HP("Headphones", NULL),
+        SND_SOC_DAPM_SPK("Speaker", NULL),
+        SND_SOC_DAPM_MIC("Mic Jack", NULL),
+        SND_SOC_DAPM_MIC("DMIC1", NULL),
+        SND_SOC_DAPM_MIC("DMIC2", NULL),
+        SND_SOC_DAPM_LINE("Line Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route broadwell_rt286_map[] = {
+
+        /* speaker */
+        {"Speaker", NULL, "SPOR"},
+        {"Speaker", NULL, "SPOL"},
+
+        /* HP jack connectors - unknown if we have jack deteck */
+        {"Headphones", NULL, "HPO Pin"},
+
+        /* other jacks */
+        {"MIC1", NULL, "Mic Jack"},
+        {"LINE1", NULL, "Line Jack"},
+
+        /* digital mics */
+        {"DMIC1 Pin", NULL, "DMIC1"},
+        {"DMIC2 Pin", NULL, "DMIC2"},
+
+        /* CODEC BE connections */
+        {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
+        {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
+};
+
+static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
+                        struct snd_pcm_hw_params *params)
+{
+        struct snd_interval *rate = hw_param_interval(params,
+                        SNDRV_PCM_HW_PARAM_RATE);
+        struct snd_interval *channels = hw_param_interval(params,
+                                                SNDRV_PCM_HW_PARAM_CHANNELS);
+
+        /* The ADSP will covert the FE rate to 48k, stereo */
+        rate->min = rate->max = 48000;
+        channels->min = channels->max = 2;
+
+        /* set SSP0 to 16 bit */
+        snd_mask_set(&params->masks[SNDRV_PCM_HW_PARAM_FORMAT -
+                                    SNDRV_PCM_HW_PARAM_FIRST_MASK],
+                                    SNDRV_PCM_FORMAT_S16_LE);
+        return 0;
+}
+
+static int broadwell_rt286_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;
+        int ret;
+
+        ret = snd_soc_dai_set_sysclk(codec_dai, RT286_SCLK_S_PLL, 24000000,
+                SND_SOC_CLOCK_IN);
+
+        if (ret < 0) {
+                dev_err(rtd->dev, "can't set codec sysclk configuration\n");
+                return ret;
+        }
+
+        return ret;
+}
+
+static struct snd_soc_ops broadwell_rt286_ops = {
+        .hw_params = broadwell_rt286_hw_params,
+};
+
+static int broadwell_rtd_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct snd_soc_codec *codec = rtd->codec;
+        struct snd_soc_dapm_context *dapm = &codec->dapm;
+        struct sst_pdata *pdata = dev_get_platdata(rtd->platform->dev);
+        struct sst_hsw *broadwell = pdata->dsp;
+        int ret;
+
+        /* Set ADSP SSP port settings */
+        ret = sst_hsw_device_set_config(broadwell, SST_HSW_DEVICE_SSP_0,
+                SST_HSW_DEVICE_MCLK_FREQ_24_MHZ,
+                SST_HSW_DEVICE_CLOCK_MASTER, 9);
+        if (ret < 0) {
+                dev_err(rtd->dev, "error: failed to set device config\n");
+                return ret;
+        }
+
+        /* always connected - check HP for jack detect */
+        snd_soc_dapm_enable_pin(dapm, "Headphones");
+        snd_soc_dapm_enable_pin(dapm, "Speaker");
+        snd_soc_dapm_enable_pin(dapm, "Mic Jack");
+        snd_soc_dapm_enable_pin(dapm, "Line Jack");
+        snd_soc_dapm_enable_pin(dapm, "DMIC1");
+        snd_soc_dapm_enable_pin(dapm, "DMIC2");
+
+        return 0;
+}
+
+/* broadwell digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link broadwell_rt286_dais[] = {
+        /* Front End DAI links */
+        {
+                .name = "System PCM",
+                .stream_name = "System Playback",
+                .cpu_dai_name = "System Pin",
+                .platform_name = "haswell-pcm-audio",
+                .dynamic = 1,
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .init = broadwell_rtd_init,
+                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+                .dpcm_playback = 1,
+        },
+        {
+                .name = "Offload0",
+                .stream_name = "Offload0 Playback",
+                .cpu_dai_name = "Offload0 Pin",
+                .platform_name = "haswell-pcm-audio",
+                .dynamic = 1,
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+                .dpcm_playback = 1,
+        },
+        {
+                .name = "Offload1",
+                .stream_name = "Offload1 Playback",
+                .cpu_dai_name = "Offload1 Pin",
+                .platform_name = "haswell-pcm-audio",
+                .dynamic = 1,
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+                .dpcm_playback = 1,
+        },
+        {
+                .name = "Loopback PCM",
+                .stream_name = "Loopback",
+                .cpu_dai_name = "Loopback Pin",
+                .platform_name = "haswell-pcm-audio",
+                .dynamic = 0,
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+                .dpcm_capture = 1,
+        },
+        {
+                .name = "Capture PCM",
+                .stream_name = "Capture",
+                .cpu_dai_name = "Capture Pin",
+                .platform_name = "haswell-pcm-audio",
+                .dynamic = 1,
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+                .dpcm_capture = 1,
+        },
+
+        /* Back End DAI links */
+        {
+                /* SSP0 - Codec */
+                .name = "Codec",
+                .be_id = 0,
+                .cpu_dai_name = "snd-soc-dummy-dai",
+                .platform_name = "snd-soc-dummy",
+                .no_pcm = 1,
+                .codec_name = "i2c-INT343A:00",
+                .codec_dai_name = "rt286-aif1",
+                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+                        SND_SOC_DAIFMT_CBS_CFS,
+                .ignore_suspend = 1,
+                .ignore_pmdown_time = 1,
+                .be_hw_params_fixup = broadwell_ssp0_fixup,
+                .ops = &broadwell_rt286_ops,
+                .dpcm_playback = 1,
+                .dpcm_capture = 1,
+        },
+};
+
+/* broadwell audio machine driver for WPT + RT286S */
+static struct snd_soc_card broadwell_rt286 = {
+        .name = "broadwell-rt286",
+        .owner = THIS_MODULE,
+        .dai_link = broadwell_rt286_dais,
+        .num_links = ARRAY_SIZE(broadwell_rt286_dais),
+        .dapm_widgets = broadwell_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(broadwell_widgets),
+        .dapm_routes = broadwell_rt286_map,
+        .num_dapm_routes = ARRAY_SIZE(broadwell_rt286_map),
+        .fully_routed = true,
+};
+
+static int broadwell_audio_probe(struct platform_device *pdev)
+{
+        broadwell_rt286.dev = &pdev->dev;
+
+        return snd_soc_register_card(&broadwell_rt286);
+}
+
+static int broadwell_audio_remove(struct platform_device *pdev)
+{
+        snd_soc_unregister_card(&broadwell_rt286);
+        return 0;
+}
+
+static struct platform_driver broadwell_audio = {
+        .probe = broadwell_audio_probe,
+        .remove = broadwell_audio_remove,
+        .driver = {
+                .name = "broadwell-audio",
+                .owner = THIS_MODULE,
+        },
+};
+
+module_platform_driver(broadwell_audio)
+
+/* Module information */
+MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
+MODULE_DESCRIPTION("Intel SST Audio for WPT/Broadwell");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:broadwell-audio");