ASoC: Intel: Skylake - Add Skylake RT286 I2S machine driver

Add the SKL I2S machine driver using Realtek ALC286S codec
in I2S mode.

Signed-off-by: Omair M Abdullah <omair.m.abdullah@intel.com>
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

3 files changed, 281 insertions, 0 deletions

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index 664df1f44530..6d67357f2d74 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -140,3 +140,16 @@ config SND_SOC_INTEL_SKYLAKE
         select SND_HDA_EXT_CORE
         select SND_SOC_TOPOLOGY
         select SND_SOC_INTEL_SST
+
+config SND_SOC_INTEL_SKL_RT286_MACH
+        tristate "ASoC Audio driver for SKL with RT286 I2S mode"
+        depends on X86 && ACPI
+        select SND_SOC_INTEL_SST
+        select SND_SOC_INTEL_SKYLAKE
+        select SND_SOC_RT286
+        select SND_SOC_DMIC
+        help
+           This adds support for ASoC machine driver for Skylake platforms
+           with RT286 I2S audio codec.
+           Say Y if you have such a device
+           If unsure select "N".
diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile
index cb94895c9edb..371c4565cad8 100644
--- a/sound/soc/intel/boards/Makefile
+++ b/sound/soc/intel/boards/Makefile
@@ -6,6 +6,7 @@ snd-soc-sst-bytcr-rt5640-objs := bytcr_rt5640.o
 snd-soc-sst-cht-bsw-rt5672-objs := cht_bsw_rt5672.o
 snd-soc-sst-cht-bsw-rt5645-objs := cht_bsw_rt5645.o
 snd-soc-sst-cht-bsw-max98090_ti-objs := cht_bsw_max98090_ti.o
+snd-soc-skl_rt286-objs := skl_rt286.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
@@ -15,3 +16,4 @@ obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH) += snd-soc-sst-bytcr-rt5640.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH) += snd-soc-sst-cht-bsw-rt5672.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH) += snd-soc-sst-cht-bsw-rt5645.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH) += snd-soc-sst-cht-bsw-max98090_ti.o
+obj-$(CONFIG_SND_SOC_INTEL_SKL_RT286_MACH) += snd-soc-skl_rt286.o
diff --git a/sound/soc/intel/boards/skl_rt286.c b/sound/soc/intel/boards/skl_rt286.c
new file mode 100644
index 000000000000..488c98ee1ded
--- /dev/null
+++ b/sound/soc/intel/boards/skl_rt286.c
@@ -0,0 +1,266 @@
+/*
+ * Intel Skylake I2S Machine Driver
+ *
+ * Copyright (C) 2014-2015, Intel Corporation. All rights reserved.
+ *
+ * Modified from:
+ *   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/jack.h>
+#include <sound/pcm_params.h>
+#include "../../codecs/rt286.h"
+
+static struct snd_soc_jack skylake_headset;
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin skylake_headset_pins[] = {
+        {
+                .pin = "Mic Jack",
+                .mask = SND_JACK_MICROPHONE,
+        },
+        {
+                .pin = "Headphone Jack",
+                .mask = SND_JACK_HEADPHONE,
+        },
+};
+
+static const struct snd_kcontrol_new skylake_controls[] = {
+        SOC_DAPM_PIN_SWITCH("Speaker"),
+        SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+        SOC_DAPM_PIN_SWITCH("Mic Jack"),
+};
+
+static const struct snd_soc_dapm_widget skylake_widgets[] = {
+        SND_SOC_DAPM_HP("Headphone Jack", NULL),
+        SND_SOC_DAPM_SPK("Speaker", NULL),
+        SND_SOC_DAPM_MIC("Mic Jack", NULL),
+        SND_SOC_DAPM_MIC("DMIC2", NULL),
+        SND_SOC_DAPM_MIC("SoC DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route skylake_rt286_map[] = {
+        /* speaker */
+        {"Speaker", NULL, "SPOR"},
+        {"Speaker", NULL, "SPOL"},
+
+        /* HP jack connectors - unknown if we have jack deteck */
+        {"Headphone Jack", NULL, "HPO Pin"},
+
+        /* other jacks */
+        {"MIC1", NULL, "Mic Jack"},
+
+        /* digital mics */
+        {"DMIC1 Pin", NULL, "DMIC2"},
+        {"DMIC AIF", NULL, "SoC DMIC"},
+
+        /* CODEC BE connections */
+        { "AIF1 Playback", NULL, "ssp0 Tx"},
+        { "ssp0 Tx", NULL, "codec0_out"},
+        { "ssp0 Tx", NULL, "codec1_out"},
+
+        { "codec0_in", NULL, "ssp0 Rx" },
+        { "codec1_in", NULL, "ssp0 Rx" },
+        { "ssp0 Rx", NULL, "AIF1 Capture" },
+
+        { "dmic01_hifi", NULL, "DMIC01 Rx" },
+        { "DMIC01 Rx", NULL, "Capture" },
+
+        { "hif1", NULL, "iDisp Tx"},
+        { "iDisp Tx", NULL, "iDisp_out"},
+
+};
+
+static int skylake_rt286_codec_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct snd_soc_codec *codec = rtd->codec;
+        int ret;
+
+        ret = snd_soc_card_jack_new(rtd->card, "Headset",
+                SND_JACK_HEADSET | SND_JACK_BTN_0,
+                &skylake_headset,
+                skylake_headset_pins, ARRAY_SIZE(skylake_headset_pins));
+
+        if (ret)
+                return ret;
+
+        rt286_mic_detect(codec, &skylake_headset);
+
+        return 0;
+}
+
+
+static int skylake_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 output is 48KHz, stereo, 16bits */
+        rate->min = rate->max = 48000;
+        channels->min = channels->max = 2;
+        params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
+
+        return 0;
+}
+
+static int skylake_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, "set codec sysclk failed: %d\n", ret);
+
+        return ret;
+}
+
+static struct snd_soc_ops skylake_rt286_ops = {
+        .hw_params = skylake_rt286_hw_params,
+};
+
+/* skylake digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link skylake_rt286_dais[] = {
+        /* Front End DAI links */
+        {
+                .name = "Skl Audio Port",
+                .stream_name = "Audio",
+                .cpu_dai_name = "System Pin",
+                .platform_name = "0000:00:1f.3",
+                .nonatomic = 1,
+                .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 = "Skl Audio Capture Port",
+                .stream_name = "Audio Record",
+                .cpu_dai_name = "System Pin",
+                .platform_name = "0000:00:1f.3",
+                .nonatomic = 1,
+                .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,
+        },
+        {
+                .name = "Skl Audio Reference cap",
+                .stream_name = "refcap",
+                .cpu_dai_name = "Reference Pin",
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .platform_name = "0000:00:1f.3",
+                .init = NULL,
+                .dpcm_capture = 1,
+                .ignore_suspend = 1,
+                .nonatomic = 1,
+                .dynamic = 1,
+        },
+
+        /* Back End DAI links */
+        {
+                /* SSP0 - Codec */
+                .name = "SSP0-Codec",
+                .be_id = 0,
+                .cpu_dai_name = "SSP0 Pin",
+                .platform_name = "0000:00:1f.3",
+                .no_pcm = 1,
+                .codec_name = "i2c-INT343A:00",
+                .codec_dai_name = "rt286-aif1",
+                .init = skylake_rt286_codec_init,
+                .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 = skylake_ssp0_fixup,
+                .ops = &skylake_rt286_ops,
+                .dpcm_playback = 1,
+                .dpcm_capture = 1,
+        },
+        {
+                .name = "dmic01",
+                .be_id = 1,
+                .cpu_dai_name = "DMIC01 Pin",
+                .codec_name = "dmic-codec",
+                .codec_dai_name = "dmic-hifi",
+                .platform_name = "0000:00:1f.3",
+                .ignore_suspend = 1,
+                .dpcm_capture = 1,
+                .no_pcm = 1,
+        },
+};
+
+/* skylake audio machine driver for SPT + RT286S */
+static struct snd_soc_card skylake_rt286 = {
+        .name = "skylake-rt286",
+        .owner = THIS_MODULE,
+        .dai_link = skylake_rt286_dais,
+        .num_links = ARRAY_SIZE(skylake_rt286_dais),
+        .controls = skylake_controls,
+        .num_controls = ARRAY_SIZE(skylake_controls),
+        .dapm_widgets = skylake_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(skylake_widgets),
+        .dapm_routes = skylake_rt286_map,
+        .num_dapm_routes = ARRAY_SIZE(skylake_rt286_map),
+        .fully_routed = true,
+};
+
+static int skylake_audio_probe(struct platform_device *pdev)
+{
+        skylake_rt286.dev = &pdev->dev;
+
+        return snd_soc_register_card(&skylake_rt286);
+}
+
+static int skylake_audio_remove(struct platform_device *pdev)
+{
+        snd_soc_unregister_card(&skylake_rt286);
+        return 0;
+}
+
+static struct platform_driver skylake_audio = {
+        .probe = skylake_audio_probe,
+        .remove = skylake_audio_remove,
+        .driver = {
+                .name = "skl_alc286s_i2s",
+        },
+};
+
+module_platform_driver(skylake_audio)
+
+/* Module information */
+MODULE_AUTHOR("Omair Mohammed Abdullah <omair.m.abdullah@intel.com>");
+MODULE_DESCRIPTION("Intel SST Audio for Skylake");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:skl_alc286s_i2s");