ASoC: Intel: boards: Add bdw-rt5677 machine driver

This is used by the Chromebook Pixel 2015.

Signed-off-by: Ben Zhang <benzh@chromium.org>
Signed-off-by: Dylan Reid <dgreid@chromium.org>
[john@metanate.com:
 - forward-port driver from Chromium OS 3.14 tree to master
 - remove wake on voice function that isn't supported by upstream rt5677
   driver
 - remote owner assignment in platform_driver (Evan McClain)
 - convert to devm_snd_soc_register_card (Evan McClain)
 - add a full copyright header based on module license and Chromium OS
   Git history
]
Signed-off-by: John Keeping <john@metanate.com>
Tested-by: Genki Marshall <genki@genki.is>
Tested-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

4 files changed, 361 insertions, 0 deletions

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index fc6e78050a79..26eb5a0a5575 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -121,6 +121,17 @@ config SND_SOC_INTEL_BYT_MAX98090_MACH
           This adds audio driver for Intel Baytrail platform based boards
           with the MAX98090 audio codec.
 
+config SND_SOC_INTEL_BDW_RT5677_MACH
+        tristate "ASoC Audio driver for Intel Broadwell with RT5677 codec"
+        depends on X86_INTEL_LPSS && GPIOLIB && I2C && DW_DMAC
+        depends on DW_DMAC_CORE=y
+        select SND_SOC_INTEL_SST
+        select SND_SOC_INTEL_HASWELL
+        select SND_SOC_RT5677
+        help
+          This adds support for Intel Broadwell platform based boards with
+          the RT5677 audio codec.
+
 config SND_SOC_INTEL_BROADWELL_MACH
         tristate "ASoC Audio DSP support for Intel Broadwell Wildcatpoint"
         depends on X86_INTEL_LPSS && I2C && DW_DMAC && \
diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile
index dac03a06bfd8..5639f10774e6 100644
--- a/sound/soc/intel/boards/Makefile
+++ b/sound/soc/intel/boards/Makefile
@@ -1,6 +1,7 @@
 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-bdw-rt5677-mach-objs := bdw-rt5677.o
 snd-soc-sst-broadwell-objs := broadwell.o
 snd-soc-sst-bxt-da7219_max98357a-objs := bxt_da7219_max98357a.o
 snd-soc-sst-bxt-rt298-objs := bxt_rt298.o
@@ -19,6 +20,7 @@ obj-$(CONFIG_SND_SOC_INTEL_BYT_MAX98090_MACH) += snd-soc-sst-byt-max98090-mach.o
 obj-$(CONFIG_SND_SOC_INTEL_BXT_DA7219_MAX98357A_MACH) += snd-soc-sst-bxt-da7219_max98357a.o
 obj-$(CONFIG_SND_SOC_INTEL_BXT_RT298_MACH) += snd-soc-sst-bxt-rt298.o
 obj-$(CONFIG_SND_SOC_INTEL_BROADWELL_MACH) += snd-soc-sst-broadwell.o
+obj-$(CONFIG_SND_SOC_INTEL_BDW_RT5677_MACH) += snd-soc-sst-bdw-rt5677-mach.o
 obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH) += snd-soc-sst-bytcr-rt5640.o
 obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH) += snd-soc-sst-bytcr-rt5651.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH) += snd-soc-sst-cht-bsw-rt5672.o
diff --git a/sound/soc/intel/boards/bdw-rt5677.c b/sound/soc/intel/boards/bdw-rt5677.c
new file mode 100644
index 000000000000..547e6705bf6d
--- /dev/null
+++ b/sound/soc/intel/boards/bdw-rt5677.c
@@ -0,0 +1,347 @@
+/*
+ * ASoC machine driver for Intel Broadwell platforms with RT5677 codec
+ *
+ * Copyright (c) 2014, The Chromium OS Authors.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/delay.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/jack.h>
+
+#include "../common/sst-dsp.h"
+#include "../haswell/sst-haswell-ipc.h"
+
+#include "../../codecs/rt5677.h"
+
+struct bdw_rt5677_priv {
+        struct gpio_desc *gpio_hp_en;
+        struct snd_soc_codec *codec;
+};
+
+static int bdw_rt5677_event_hp(struct snd_soc_dapm_widget *w,
+                        struct snd_kcontrol *k, int event)
+{
+        struct snd_soc_dapm_context *dapm = w->dapm;
+        struct snd_soc_card *card = dapm->card;
+        struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
+
+        if (SND_SOC_DAPM_EVENT_ON(event))
+                msleep(70);
+
+        gpiod_set_value_cansleep(bdw_rt5677->gpio_hp_en,
+                SND_SOC_DAPM_EVENT_ON(event));
+
+        return 0;
+}
+
+static const struct snd_soc_dapm_widget bdw_rt5677_widgets[] = {
+        SND_SOC_DAPM_HP("Headphone", bdw_rt5677_event_hp),
+        SND_SOC_DAPM_SPK("Speaker", NULL),
+        SND_SOC_DAPM_MIC("Headset Mic", NULL),
+        SND_SOC_DAPM_MIC("Local DMICs", NULL),
+        SND_SOC_DAPM_MIC("Remote DMICs", NULL),
+};
+
+static const struct snd_soc_dapm_route bdw_rt5677_map[] = {
+        /* Speakers */
+        {"Speaker", NULL, "PDM1L"},
+        {"Speaker", NULL, "PDM1R"},
+
+        /* Headset jack connectors */
+        {"Headphone", NULL, "LOUT1"},
+        {"Headphone", NULL, "LOUT2"},
+        {"IN1P", NULL, "Headset Mic"},
+        {"IN1N", NULL, "Headset Mic"},
+
+        /* Digital MICs
+         * Local DMICs: the two DMICs on the mainboard
+         * Remote DMICs: the two DMICs on the camera module
+         */
+        {"DMIC L1", NULL, "Remote DMICs"},
+        {"DMIC R1", NULL, "Remote DMICs"},
+        {"DMIC L2", NULL, "Local DMICs"},
+        {"DMIC R2", NULL, "Local DMICs"},
+
+        /* CODEC BE connections */
+        {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
+        {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
+};
+
+static const struct snd_kcontrol_new bdw_rt5677_controls[] = {
+        SOC_DAPM_PIN_SWITCH("Speaker"),
+        SOC_DAPM_PIN_SWITCH("Headphone"),
+        SOC_DAPM_PIN_SWITCH("Headset Mic"),
+        SOC_DAPM_PIN_SWITCH("Local DMICs"),
+        SOC_DAPM_PIN_SWITCH("Remote DMICs"),
+};
+
+
+static struct snd_soc_jack headphone_jack;
+static struct snd_soc_jack mic_jack;
+
+static struct snd_soc_jack_pin headphone_jack_pin = {
+        .pin    = "Headphone",
+        .mask   = SND_JACK_HEADPHONE,
+};
+
+static struct snd_soc_jack_pin mic_jack_pin = {
+        .pin    = "Headset Mic",
+        .mask   = SND_JACK_MICROPHONE,
+};
+
+static struct snd_soc_jack_gpio headphone_jack_gpio = {
+        .name                   = "plug-det",
+        .report                 = SND_JACK_HEADPHONE,
+        .debounce_time          = 200,
+};
+
+static struct snd_soc_jack_gpio mic_jack_gpio = {
+        .name                   = "mic-present",
+        .report                 = SND_JACK_MICROPHONE,
+        .debounce_time          = 200,
+        .invert                 = 1,
+};
+
+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 bdw_rt5677_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, RT5677_SCLK_S_MCLK, 24576000,
+                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 bdw_rt5677_ops = {
+        .hw_params = bdw_rt5677_hw_params,
+};
+
+static int bdw_rt5677_rtd_init(struct snd_soc_pcm_runtime *rtd)
+{
+        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;
+        }
+
+        return 0;
+}
+
+static int bdw_rt5677_init(struct snd_soc_pcm_runtime *rtd)
+{
+        struct bdw_rt5677_priv *bdw_rt5677 =
+                        snd_soc_card_get_drvdata(rtd->card);
+        struct snd_soc_codec *codec = rtd->codec;
+        struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
+
+        /* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
+         * The ASRC clock source is clk_i2s1_asrc.
+         */
+        rt5677_sel_asrc_clk_src(codec, RT5677_DA_STEREO_FILTER |
+                        RT5677_AD_STEREO1_FILTER | RT5677_I2S1_SOURCE,
+                        RT5677_CLK_SEL_I2S1_ASRC);
+
+        /* Request rt5677 GPIO for headphone amp control */
+        bdw_rt5677->gpio_hp_en = devm_gpiod_get_index(codec->dev,
+                        "headphone-enable", 0, 0);
+        if (IS_ERR(bdw_rt5677->gpio_hp_en)) {
+                dev_err(codec->dev, "Can't find HP_AMP_SHDN_L gpio\n");
+                return PTR_ERR(bdw_rt5677->gpio_hp_en);
+        }
+        gpiod_direction_output(bdw_rt5677->gpio_hp_en, 0);
+
+        /* Create and initialize headphone jack */
+        if (!snd_soc_card_jack_new(rtd->card, "Headphone Jack",
+                        SND_JACK_HEADPHONE, &headphone_jack,
+                        &headphone_jack_pin, 1)) {
+                headphone_jack_gpio.gpiod_dev = codec->dev;
+                if (snd_soc_jack_add_gpios(&headphone_jack, 1,
+                                &headphone_jack_gpio))
+                        dev_err(codec->dev, "Can't add headphone jack gpio\n");
+        } else {
+                dev_err(codec->dev, "Can't create headphone jack\n");
+        }
+
+        /* Create and initialize mic jack */
+        if (!snd_soc_card_jack_new(rtd->card, "Mic Jack",
+                        SND_JACK_MICROPHONE, &mic_jack,
+                        &mic_jack_pin, 1)) {
+                mic_jack_gpio.gpiod_dev = codec->dev;
+                if (snd_soc_jack_add_gpios(&mic_jack, 1, &mic_jack_gpio))
+                        dev_err(codec->dev, "Can't add mic jack gpio\n");
+        } else {
+                dev_err(codec->dev, "Can't create mic jack\n");
+        }
+        bdw_rt5677->codec = codec;
+
+        snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
+        return 0;
+}
+
+/* broadwell digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link bdw_rt5677_dais[] = {
+        /* Front End DAI links */
+        {
+                .name = "System PCM",
+                .stream_name = "System Playback/Capture",
+                .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 = bdw_rt5677_rtd_init,
+                .trigger = {
+                        SND_SOC_DPCM_TRIGGER_POST,
+                        SND_SOC_DPCM_TRIGGER_POST
+                },
+                .dpcm_capture = 1,
+                .dpcm_playback = 1,
+        },
+
+        /* Back End DAI links */
+        {
+                /* SSP0 - Codec */
+                .name = "Codec",
+                .id = 0,
+                .cpu_dai_name = "snd-soc-dummy-dai",
+                .platform_name = "snd-soc-dummy",
+                .no_pcm = 1,
+                .codec_name = "i2c-RT5677CE:00",
+                .codec_dai_name = "rt5677-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 = &bdw_rt5677_ops,
+                .dpcm_playback = 1,
+                .dpcm_capture = 1,
+                .init = bdw_rt5677_init,
+        },
+};
+
+static int bdw_rt5677_suspend_pre(struct snd_soc_card *card)
+{
+        struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
+        struct snd_soc_dapm_context *dapm;
+
+        if (bdw_rt5677->codec) {
+                dapm = snd_soc_codec_get_dapm(bdw_rt5677->codec);
+                snd_soc_dapm_disable_pin(dapm, "MICBIAS1");
+        }
+        return 0;
+}
+
+static int bdw_rt5677_resume_post(struct snd_soc_card *card)
+{
+        struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
+        struct snd_soc_dapm_context *dapm;
+
+        if (bdw_rt5677->codec) {
+                dapm = snd_soc_codec_get_dapm(bdw_rt5677->codec);
+                snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
+        }
+        return 0;
+}
+
+/* ASoC machine driver for Broadwell DSP + RT5677 */
+static struct snd_soc_card bdw_rt5677_card = {
+        .name = "bdw-rt5677",
+        .owner = THIS_MODULE,
+        .dai_link = bdw_rt5677_dais,
+        .num_links = ARRAY_SIZE(bdw_rt5677_dais),
+        .dapm_widgets = bdw_rt5677_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(bdw_rt5677_widgets),
+        .dapm_routes = bdw_rt5677_map,
+        .num_dapm_routes = ARRAY_SIZE(bdw_rt5677_map),
+        .controls = bdw_rt5677_controls,
+        .num_controls = ARRAY_SIZE(bdw_rt5677_controls),
+        .fully_routed = true,
+        .suspend_pre = bdw_rt5677_suspend_pre,
+        .resume_post = bdw_rt5677_resume_post,
+};
+
+static int bdw_rt5677_probe(struct platform_device *pdev)
+{
+        struct bdw_rt5677_priv *bdw_rt5677;
+
+        bdw_rt5677_card.dev = &pdev->dev;
+
+        /* Allocate driver private struct */
+        bdw_rt5677 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5677_priv),
+                GFP_KERNEL);
+        if (!bdw_rt5677) {
+                dev_err(&pdev->dev, "Can't allocate bdw_rt5677\n");
+                return -ENOMEM;
+        }
+
+        snd_soc_card_set_drvdata(&bdw_rt5677_card, bdw_rt5677);
+
+        return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5677_card);
+}
+
+static struct platform_driver bdw_rt5677_audio = {
+        .probe = bdw_rt5677_probe,
+        .driver = {
+                .name = "bdw-rt5677",
+        },
+};
+
+module_platform_driver(bdw_rt5677_audio)
+
+/* Module information */
+MODULE_AUTHOR("Ben Zhang");
+MODULE_DESCRIPTION("Intel Broadwell RT5677 machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:bdw-rt5677");
diff --git a/sound/soc/intel/common/sst-acpi.c b/sound/soc/intel/common/sst-acpi.c
index 2c5eda14d510..1285cc597b6b 100644
--- a/sound/soc/intel/common/sst-acpi.c
+++ b/sound/soc/intel/common/sst-acpi.c
@@ -199,6 +199,7 @@ static struct sst_acpi_desc sst_acpi_haswell_desc = {
 
 static struct sst_acpi_mach broadwell_machines[] = {
         { "INT343A", "broadwell-audio", "intel/IntcSST2.bin", NULL, NULL, NULL },
+        { "RT5677CE", "bdw-rt5677", "intel/IntcSST2.bin", NULL, NULL, NULL },
         {}
 };