This patch adds machine driver support for Merrifield platform. Patch has dependency on Merrifield DSP driver.

Signed-off-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- this is standalone patch with no depends on other code posted

sound/soc/intel/Kconfig | 15 ++ sound/soc/intel/Makefile | 2 + sound/soc/intel/merr_dpcm_wm8958.c | 430 ++++++++++++++++++++++++++++++++++++ 3 files changed, 447 insertions(+), 0 deletions(-) create mode 100644 sound/soc/intel/merr_dpcm_wm8958.c

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig index 2a3af88..16d1801 100644 --- a/sound/soc/intel/Kconfig +++ b/sound/soc/intel/Kconfig @@ -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". diff --git a/sound/soc/intel/Makefile b/sound/soc/intel/Makefile index 9ab43be..9d4b3d4 100644 --- a/sound/soc/intel/Makefile +++ b/sound/soc/intel/Makefile @@ -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 diff --git a/sound/soc/intel/merr_dpcm_wm8958.c b/sound/soc/intel/merr_dpcm_wm8958.c new file mode 100644 index 0000000..4ac6a72 --- /dev/null +++ b/sound/soc/intel/merr_dpcm_wm8958.c @@ -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(&params->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");