@@ -76,3 +76,18 @@ config SND_SOC_INTEL_BROADWELL_MACH
Ultrabook platforms.
Say Y if you have such a device
If unsure select "N".
+
+config SND_SOC_INTEL_MRFLD_WM8958_MACH
+ tristate "SOC Machine Audio driver for Intel Merrifield MID platform"
+ depends on X86
+ select SND_SOC_WM8994
+ select MFD_CORE
+ select MFD_WM8994
+ select REGULATOR_WM8994
+ select SND_SST_MFLD_PLATFORM
+ select SND_SST_IPC
+ help
+ This adds support for ASoC machine driver for Intel(R) MID Merrifield platform
+ used as alsa device in audio substem in Intel(R) MID devices
+ Say Y if you have such a device
+ If unsure select "N".
@@ -26,6 +26,7 @@ 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-broadwell-objs := broadwell.o
+snd-merr-dpcm-wm8958-objs := merr_dpcm_wm8958.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
@@ -34,3 +35,4 @@ obj-$(CONFIG_SND_SOC_INTEL_BROADWELL_MACH) += snd-soc-sst-broadwell.o
# DSP driver
obj-$(CONFIG_SND_SST_IPC) += sst/
+obj-$(CONFIG_SND_SOC_INTEL_MRFLD_WM8958_MACH) += snd-merr-dpcm-wm8958.o
new file mode 100644
@@ -0,0 +1,430 @@
+/*
+ * merr_dpcm_wm8958.c - ASoc DPCM Machine driver for Intel Merrfield MID platform
+ *
+ * Copyright (C) 2013-14 Intel Corp
+ * Author: Vinod Koul <vinod.koul@intel.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; version 2 of the License.
+ *
+ * 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/init.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/async.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <linux/input.h>
+
+#include <linux/mfd/wm8994/core.h>
+#include <linux/mfd/wm8994/registers.h>
+#include <linux/mfd/wm8994/pdata.h>
+#include "../codecs/wm8994.h"
+#include "sst-atom-controls.h"
+
+/* Codec PLL output clk rate */
+#define CODEC_SYSCLK_RATE 24576000
+/* Input clock to codec at MCLK1 PIN */
+#define CODEC_IN_MCLK1_RATE 19200000
+/* Input clock to codec at MCLK2 PIN */
+#define CODEC_IN_MCLK2_RATE 32768
+/* define to select between MCLK1 and MCLK2 input to codec as its clock */
+#define CODEC_IN_MCLK1 1
+#define CODEC_IN_MCLK2 2
+#define CODEC_BE 1
+
+struct mrfld_8958_mc_private {
+ struct snd_soc_jack jack;
+ int jack_retry;
+};
+
+/*
+ * Function to switch the input clock for codec, When audio is in
+ * progress input clock to codec will be through MCLK1 which is 19.2MHz
+ * while in off state input clock to codec will be through 32KHz through
+ * MCLK2
+ * card : Sound card structure
+ * src : Input clock source to codec
+ */
+static int mrfld_8958_set_codec_clk(struct snd_soc_card *card, int src)
+{
+ int ret;
+ struct snd_soc_dai *aif1_dai = card->rtd[CODEC_BE].codec_dai;
+
+ if (!aif1_dai)
+ return -ENODEV;
+
+ switch (src) {
+ case CODEC_IN_MCLK1:
+ /* Turn ON the PLL to generate required sysclk rate
+ * from MCLK1
+ */
+ ret = snd_soc_dai_set_pll(aif1_dai,
+ WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+ CODEC_IN_MCLK1_RATE, CODEC_SYSCLK_RATE);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+ /* Switch to MCLK1 input */
+ ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_FLL1,
+ CODEC_SYSCLK_RATE, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set codec sysclk configuration %d\n",
+ ret);
+ return ret;
+ }
+ break;
+ case CODEC_IN_MCLK2:
+ /* Switch to MCLK2 */
+ ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to switch to MCLK2: %d\n", ret);
+ return ret;
+ }
+ /* Turn off PLL for MCLK1 */
+ ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 0, 0, 0);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to stop the FLL: %d", ret);
+ return ret;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int mrfld_wm8958_set_clk(struct snd_soc_dai *codec_dai)
+{
+ int ret = 0;
+ struct snd_soc_card *card = codec_dai->card;
+
+ ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xf0, 0xf0, 4, 24);
+ if (ret < 0) {
+ dev_err(card->dev, "can't set codec pcm format %d\n", ret);
+ return ret;
+ }
+
+ ret = mrfld_8958_set_codec_clk(card, CODEC_IN_MCLK1);
+
+ return ret;
+}
+
+static int mrfld_8958_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;
+
+ return mrfld_wm8958_set_clk(codec_dai);
+}
+
+static const struct snd_soc_pcm_stream mrfld_wm8958_dai_params = {
+ .formats = SNDRV_PCM_FMTBIT_S24_LE,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+};
+
+static int merr_codec_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 DSP will covert the FE rate to 48k, stereo, 24bits */
+ rate->min = rate->max = 48000;
+ channels->min = channels->max = 2;
+
+ /* set SSP2 to 24-bit */
+ snd_mask_set(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT -
+ SNDRV_PCM_HW_PARAM_FIRST_MASK],
+ SNDRV_PCM_FORMAT_S24_LE);
+ return 0;
+}
+
+static int mrfld_8958_set_bias_level(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm,
+ enum snd_soc_bias_level level)
+{
+ int ret = 0;
+ /* "wm8994-aif1" */
+ struct snd_soc_dai *aif1_dai = card->rtd[CODEC_BE].codec_dai;
+
+ if (!aif1_dai)
+ return -ENODEV;
+
+ if (dapm->dev != aif1_dai->dev)
+ return 0;
+ switch (level) {
+ case SND_SOC_BIAS_PREPARE:
+ if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
+
+ ret = mrfld_wm8958_set_clk(aif1_dai);
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+static int mrfld_8958_set_bias_level_post(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm,
+ enum snd_soc_bias_level level)
+{
+ int ret = 0;
+ /* "wm8994-aif1" */
+ struct snd_soc_dai *aif1_dai = card->rtd[CODEC_BE].codec_dai;
+
+ if (!aif1_dai)
+ return -ENODEV;
+
+ if (dapm->dev != aif1_dai->dev)
+ return 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_STANDBY:
+ /*
+ * We are in standby down so */
+ /* Switch to 32KHz MCLK2 input clock for codec
+ */
+ ret = mrfld_8958_set_codec_clk(card, CODEC_IN_MCLK2);
+ break;
+ default:
+ break;
+ }
+ if (&card->dapm == dapm)
+ card->dapm.bias_level = level;
+ return ret;
+}
+
+static const struct snd_soc_dapm_widget widgets[] = {
+ SND_SOC_DAPM_HP("Headphones", NULL),
+ SND_SOC_DAPM_MIC("AMIC", NULL),
+ SND_SOC_DAPM_MIC("DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route map[] = {
+ { "Headphones", NULL, "HPOUT1L" },
+ { "Headphones", NULL, "HPOUT1R" },
+
+ /*
+ * This machine uses 2 DMICs, other configs may use more so change
+ * below accordingly
+ */
+ { "DMIC1DAT", NULL, "DMIC" },
+ { "DMIC2DAT", NULL, "DMIC" },
+
+ /*
+ * MICBIAS2 is connected as Bias for AMIC so we link it
+ * here. Also AMIC wires up to IN1LP pin.
+ * DMIC is externally connected to 1.8V rail, so no link rqd.
+ */
+ { "AMIC", NULL, "MICBIAS2" },
+ { "IN1LP", NULL, "AMIC" },
+
+ /* dsp map link the SWM outs to codec AIF */
+ { "AIF1 Playback", NULL, "ssp2 Tx"},
+ { "ssp2 Tx", NULL, "codec_out0"},
+ { "ssp2 Tx", NULL, "codec_out1"},
+ { "codec_in0", NULL, "ssp2 Rx" },
+ { "codec_in1", NULL, "ssp2 Rx" },
+ { "ssp2 Rx", NULL, "AIF1 Capture"},
+
+};
+
+static const struct wm8958_micd_rate micdet_rates[] = {
+ { 32768, true, 1, 4 },
+ { 32768, false, 1, 1 },
+ { 44100 * 256, true, 7, 10 },
+ { 44100 * 256, false, 7, 10 },
+};
+
+static int mrfld_8958_init(struct snd_soc_pcm_runtime *runtime)
+{
+ int ret;
+ struct snd_soc_card *card = runtime->card;
+ struct mrfld_8958_mc_private *ctx = snd_soc_card_get_drvdata(card);
+ struct snd_soc_dai *aif1_dai = card->rtd[CODEC_BE].codec_dai;
+ struct snd_soc_codec *codec = aif1_dai->codec;
+
+ if (!aif1_dai)
+ return -ENODEV;
+
+ ret = snd_soc_dai_set_tdm_slot(aif1_dai, 0xf0, 0xf0, 4, 24);
+ if (ret < 0) {
+ dev_err(card->dev, "can't set codec pcm format %d\n", ret);
+ return ret;
+ }
+
+ card->dapm.idle_bias_off = true;
+
+ if (!codec) {
+ dev_err(card->dev, "%s: we didnt find the codec pointer!\n", __func__);
+ return 0;
+ }
+
+ ctx->jack_retry = 0;
+ ret = snd_soc_jack_new(codec, "Intel MID Audio Jack",
+ SND_JACK_HEADSET | SND_JACK_HEADPHONE |
+ SND_JACK_BTN_0 | SND_JACK_BTN_1,
+ &ctx->jack);
+ if (ret) {
+ dev_err(card->dev, "jack creation failed: %d\n", ret);
+ return ret;
+ }
+
+ snd_jack_set_key(ctx->jack.jack, SND_JACK_BTN_1, KEY_MEDIA);
+ snd_jack_set_key(ctx->jack.jack, SND_JACK_BTN_0, KEY_MEDIA);
+
+ wm8958_mic_detect(codec, &ctx->jack, NULL, NULL, NULL, NULL);
+
+ return 0;
+}
+
+static unsigned int rates_48000[] = {
+ 48000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_48000 = {
+ .count = ARRAY_SIZE(rates_48000),
+ .list = rates_48000,
+};
+static int mrfld_8958_startup(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_48000);
+}
+
+static struct snd_soc_ops mrfld_8958_ops = {
+ .startup = mrfld_8958_startup,
+};
+
+static struct snd_soc_ops mrfld_8958_be_ssp2_ops = {
+ .hw_params = mrfld_8958_hw_params,
+};
+
+struct snd_soc_dai_link mrfld_8958_msic_dailink[] = {
+ [MERR_DPCM_AUDIO] = {
+ .name = "Merrifield Audio Port",
+ .stream_name = "Merrifield Audio",
+ .cpu_dai_name = "Headset-cpu-dai",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .platform_name = "sst-platform",
+ .init = mrfld_8958_init,
+ .ignore_suspend = 1,
+ .dynamic = 1,
+ .ops = &mrfld_8958_ops,
+ },
+ [MERR_DPCM_COMPR] = {
+ .name = "Merrifield Compress Port",
+ .stream_name = "Merrifield Compress",
+ .platform_name = "sst-platform",
+ .cpu_dai_name = "Compress-cpu-dai",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .dynamic = 1,
+ .init = mrfld_8958_init,
+ },
+
+ /* back ends */
+ {
+ .name = "SSP2-Codec",
+ .be_id = 1,
+ .cpu_dai_name = "ssp2-port",
+ .platform_name = "sst-platform",
+ .no_pcm = 1,
+ .codec_dai_name = "wm8994-aif1",
+ .codec_name = "wm8994-codec",
+ .dai_fmt = SND_SOC_DAIFMT_DSP_B |
+ SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBS_CFS,
+ .be_hw_params_fixup = merr_codec_fixup,
+ .ignore_suspend = 1,
+ .ops = &mrfld_8958_be_ssp2_ops,
+ },
+};
+
+/* SoC card */
+static struct snd_soc_card snd_soc_card_mrfld = {
+ .name = "wm8958-audio",
+ .dai_link = mrfld_8958_msic_dailink,
+ .num_links = ARRAY_SIZE(mrfld_8958_msic_dailink),
+ .set_bias_level = mrfld_8958_set_bias_level,
+ .set_bias_level_post = mrfld_8958_set_bias_level_post,
+ .dapm_widgets = widgets,
+ .num_dapm_widgets = ARRAY_SIZE(widgets),
+ .dapm_routes = map,
+ .num_dapm_routes = ARRAY_SIZE(map),
+ .fully_routed = true,
+};
+
+static int snd_mrfld_8958_mc_probe(struct platform_device *pdev)
+{
+ int ret_val = 0;
+ struct mrfld_8958_mc_private *drv;
+
+ drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
+ if (!drv)
+ return -ENOMEM;
+
+ /* register the soc card */
+ snd_soc_card_mrfld.dev = &pdev->dev;
+ snd_soc_card_set_drvdata(&snd_soc_card_mrfld, drv);
+ ret_val = snd_soc_register_card(&snd_soc_card_mrfld);
+ if (ret_val) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed %d\n", ret_val);
+ goto unalloc;
+ }
+ platform_set_drvdata(pdev, &snd_soc_card_mrfld);
+ return ret_val;
+
+unalloc:
+ return ret_val;
+}
+
+static int snd_mrfld_8958_mc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *soc_card = platform_get_drvdata(pdev);
+
+ snd_soc_card_set_drvdata(soc_card, NULL);
+ snd_soc_unregister_card(soc_card);
+ platform_set_drvdata(pdev, NULL);
+ return 0;
+}
+
+static struct platform_driver snd_mrfld_8958_mc_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "mrfld_wm8958",
+ },
+ .probe = snd_mrfld_8958_mc_probe,
+ .remove = snd_mrfld_8958_mc_remove,
+};
+
+module_platform_driver(snd_mrfld_8958_mc_driver);
+
+MODULE_DESCRIPTION("ASoC Intel(R) Merrifield MID Machine driver");
+MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:mrfld_wm8958");