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496 lines
14 KiB
496 lines
14 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms |
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* Cherrytrail and Braswell, with RT5672 codec. |
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* |
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* Copyright (C) 2014 Intel Corp |
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* Author: Subhransu S. Prusty <[email protected]> |
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* Mengdong Lin <[email protected]> |
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*/ |
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|
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#include <linux/gpio/consumer.h> |
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#include <linux/input.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/slab.h> |
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#include <linux/clk.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/jack.h> |
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#include <sound/soc-acpi.h> |
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#include "../../codecs/rt5670.h" |
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#include "../atom/sst-atom-controls.h" |
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/* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */ |
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#define CHT_PLAT_CLK_3_HZ 19200000 |
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#define CHT_CODEC_DAI "rt5670-aif1" |
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|
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struct cht_mc_private { |
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struct snd_soc_jack headset; |
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char codec_name[SND_ACPI_I2C_ID_LEN]; |
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struct clk *mclk; |
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}; |
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|
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/* Headset jack detection DAPM pins */ |
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static struct snd_soc_jack_pin cht_bsw_headset_pins[] = { |
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{ |
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.pin = "Headset Mic", |
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.mask = SND_JACK_MICROPHONE, |
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}, |
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{ |
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.pin = "Headphone", |
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.mask = SND_JACK_HEADPHONE, |
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}, |
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}; |
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static int platform_clock_control(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *k, int event) |
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{ |
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struct snd_soc_dapm_context *dapm = w->dapm; |
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struct snd_soc_card *card = dapm->card; |
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struct snd_soc_dai *codec_dai; |
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struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); |
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int ret; |
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codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI); |
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if (!codec_dai) { |
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dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); |
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return -EIO; |
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} |
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if (SND_SOC_DAPM_EVENT_ON(event)) { |
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if (ctx->mclk) { |
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ret = clk_prepare_enable(ctx->mclk); |
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if (ret < 0) { |
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dev_err(card->dev, |
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"could not configure MCLK state"); |
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return ret; |
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} |
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} |
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/* set codec PLL source to the 19.2MHz platform clock (MCLK) */ |
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ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, |
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CHT_PLAT_CLK_3_HZ, 48000 * 512); |
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if (ret < 0) { |
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dev_err(card->dev, "can't set codec pll: %d\n", ret); |
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return ret; |
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} |
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/* set codec sysclk source to PLL */ |
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ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, |
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48000 * 512, SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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dev_err(card->dev, "can't set codec sysclk: %d\n", ret); |
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return ret; |
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} |
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} else { |
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/* Set codec sysclk source to its internal clock because codec |
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* PLL will be off when idle and MCLK will also be off by ACPI |
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* when codec is runtime suspended. Codec needs clock for jack |
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* detection and button press. |
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*/ |
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snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK, |
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48000 * 512, SND_SOC_CLOCK_IN); |
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if (ctx->mclk) |
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clk_disable_unprepare(ctx->mclk); |
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} |
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return 0; |
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} |
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static const struct snd_soc_dapm_widget cht_dapm_widgets[] = { |
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SND_SOC_DAPM_HP("Headphone", NULL), |
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SND_SOC_DAPM_MIC("Headset Mic", NULL), |
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SND_SOC_DAPM_MIC("Int Mic", NULL), |
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SND_SOC_DAPM_SPK("Ext Spk", NULL), |
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SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, |
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platform_clock_control, SND_SOC_DAPM_PRE_PMU | |
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SND_SOC_DAPM_POST_PMD), |
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}; |
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static const struct snd_soc_dapm_route cht_audio_map[] = { |
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{"IN1P", NULL, "Headset Mic"}, |
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{"IN1N", NULL, "Headset Mic"}, |
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{"DMIC L1", NULL, "Int Mic"}, |
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{"DMIC R1", NULL, "Int Mic"}, |
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{"Headphone", NULL, "HPOL"}, |
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{"Headphone", NULL, "HPOR"}, |
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{"Ext Spk", NULL, "SPOLP"}, |
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{"Ext Spk", NULL, "SPOLN"}, |
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{"Ext Spk", NULL, "SPORP"}, |
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{"Ext Spk", NULL, "SPORN"}, |
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{"AIF1 Playback", NULL, "ssp2 Tx"}, |
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{"ssp2 Tx", NULL, "codec_out0"}, |
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{"ssp2 Tx", NULL, "codec_out1"}, |
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{"codec_in0", NULL, "ssp2 Rx"}, |
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{"codec_in1", NULL, "ssp2 Rx"}, |
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{"ssp2 Rx", NULL, "AIF1 Capture"}, |
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{"Headphone", NULL, "Platform Clock"}, |
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{"Headset Mic", NULL, "Platform Clock"}, |
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{"Int Mic", NULL, "Platform Clock"}, |
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{"Ext Spk", NULL, "Platform Clock"}, |
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}; |
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static const struct snd_kcontrol_new cht_mc_controls[] = { |
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SOC_DAPM_PIN_SWITCH("Headphone"), |
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SOC_DAPM_PIN_SWITCH("Headset Mic"), |
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SOC_DAPM_PIN_SWITCH("Int Mic"), |
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SOC_DAPM_PIN_SWITCH("Ext Spk"), |
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}; |
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static int cht_aif1_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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int ret; |
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/* set codec PLL source to the 19.2MHz platform clock (MCLK) */ |
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ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, |
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CHT_PLAT_CLK_3_HZ, params_rate(params) * 512); |
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if (ret < 0) { |
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dev_err(rtd->dev, "can't set codec pll: %d\n", ret); |
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return ret; |
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} |
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/* set codec sysclk source to PLL */ |
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ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, |
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params_rate(params) * 512, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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static const struct acpi_gpio_params headset_gpios = { 0, 0, false }; |
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static const struct acpi_gpio_mapping cht_rt5672_gpios[] = { |
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{ "headset-gpios", &headset_gpios, 1 }, |
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{}, |
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}; |
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static int cht_codec_init(struct snd_soc_pcm_runtime *runtime) |
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{ |
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int ret; |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0); |
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struct snd_soc_component *component = codec_dai->component; |
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struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card); |
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if (devm_acpi_dev_add_driver_gpios(component->dev, cht_rt5672_gpios)) |
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dev_warn(runtime->dev, "Unable to add GPIO mapping table\n"); |
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|
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/* Select codec ASRC clock source to track I2S1 clock, because codec |
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* is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot |
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* be supported by RT5672. Otherwise, ASRC will be disabled and cause |
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* noise. |
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*/ |
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rt5670_sel_asrc_clk_src(component, |
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RT5670_DA_STEREO_FILTER |
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| RT5670_DA_MONO_L_FILTER |
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| RT5670_DA_MONO_R_FILTER |
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| RT5670_AD_STEREO_FILTER |
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| RT5670_AD_MONO_L_FILTER |
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| RT5670_AD_MONO_R_FILTER, |
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RT5670_CLK_SEL_I2S1_ASRC); |
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ret = snd_soc_card_jack_new(runtime->card, "Headset", |
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SND_JACK_HEADSET | SND_JACK_BTN_0 | |
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SND_JACK_BTN_1 | SND_JACK_BTN_2, |
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&ctx->headset, |
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cht_bsw_headset_pins, |
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ARRAY_SIZE(cht_bsw_headset_pins)); |
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if (ret) |
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return ret; |
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snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); |
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snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_1, KEY_VOLUMEUP); |
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snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); |
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rt5670_set_jack_detect(component, &ctx->headset); |
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if (ctx->mclk) { |
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/* |
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* The firmware might enable the clock at |
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* boot (this information may or may not |
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* be reflected in the enable clock register). |
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* To change the rate we must disable the clock |
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* first to cover these cases. Due to common |
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* clock framework restrictions that do not allow |
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* to disable a clock that has not been enabled, |
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* we need to enable the clock first. |
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*/ |
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ret = clk_prepare_enable(ctx->mclk); |
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if (!ret) |
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clk_disable_unprepare(ctx->mclk); |
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ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ); |
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if (ret) { |
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dev_err(runtime->dev, "unable to set MCLK rate\n"); |
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return ret; |
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} |
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} |
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return 0; |
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} |
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static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_interval *rate = hw_param_interval(params, |
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SNDRV_PCM_HW_PARAM_RATE); |
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struct snd_interval *channels = hw_param_interval(params, |
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SNDRV_PCM_HW_PARAM_CHANNELS); |
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int ret; |
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/* The DSP will covert the FE rate to 48k, stereo, 24bits */ |
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rate->min = rate->max = 48000; |
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channels->min = channels->max = 2; |
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/* set SSP2 to 24-bit */ |
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params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); |
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/* |
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* The default mode for the cpu-dai is TDM 4 slot. The default mode |
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* for the codec-dai is I2S. So we need to either set the cpu-dai to |
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* I2S mode to match the codec-dai, or set the codec-dai to TDM 4 slot |
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* (or program both to yet another mode). |
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* One board, the Lenovo Miix 2 10, uses not 1 but 2 codecs connected |
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* to SSP2. The second piggy-backed, output-only codec is inside the |
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* keyboard-dock (which has extra speakers). Unlike the main rt5672 |
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* codec, we cannot configure this codec, it is hard coded to use |
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* 2 channel 24 bit I2S. For this to work we must use I2S mode on this |
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* board. Since we only support 2 channels anyways, there is no need |
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* for TDM on any cht-bsw-rt5672 designs. So we use I2S 2ch everywhere. |
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*/ |
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ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0), |
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SND_SOC_DAIFMT_I2S | |
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SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS); |
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if (ret < 0) { |
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dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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static int cht_aif1_startup(struct snd_pcm_substream *substream) |
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{ |
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return snd_pcm_hw_constraint_single(substream->runtime, |
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SNDRV_PCM_HW_PARAM_RATE, 48000); |
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} |
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static const struct snd_soc_ops cht_aif1_ops = { |
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.startup = cht_aif1_startup, |
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}; |
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static const struct snd_soc_ops cht_be_ssp2_ops = { |
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.hw_params = cht_aif1_hw_params, |
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}; |
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SND_SOC_DAILINK_DEF(dummy, |
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DAILINK_COMP_ARRAY(COMP_DUMMY())); |
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SND_SOC_DAILINK_DEF(media, |
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DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai"))); |
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SND_SOC_DAILINK_DEF(deepbuffer, |
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DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai"))); |
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SND_SOC_DAILINK_DEF(ssp2_port, |
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DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port"))); |
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SND_SOC_DAILINK_DEF(ssp2_codec, |
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DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5670:00", |
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"rt5670-aif1"))); |
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SND_SOC_DAILINK_DEF(platform, |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform"))); |
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static struct snd_soc_dai_link cht_dailink[] = { |
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/* Front End DAI links */ |
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[MERR_DPCM_AUDIO] = { |
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.name = "Audio Port", |
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.stream_name = "Audio", |
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.nonatomic = true, |
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.dynamic = 1, |
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.dpcm_playback = 1, |
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.dpcm_capture = 1, |
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.ops = &cht_aif1_ops, |
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SND_SOC_DAILINK_REG(media, dummy, platform), |
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}, |
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[MERR_DPCM_DEEP_BUFFER] = { |
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.name = "Deep-Buffer Audio Port", |
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.stream_name = "Deep-Buffer Audio", |
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.nonatomic = true, |
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.dynamic = 1, |
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.dpcm_playback = 1, |
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.ops = &cht_aif1_ops, |
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SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), |
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}, |
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/* Back End DAI links */ |
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{ |
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/* SSP2 - Codec */ |
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.name = "SSP2-Codec", |
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.id = 0, |
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.no_pcm = 1, |
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.nonatomic = true, |
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.init = cht_codec_init, |
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.be_hw_params_fixup = cht_codec_fixup, |
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.dpcm_playback = 1, |
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.dpcm_capture = 1, |
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.ops = &cht_be_ssp2_ops, |
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SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform), |
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}, |
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}; |
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static int cht_suspend_pre(struct snd_soc_card *card) |
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{ |
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struct snd_soc_component *component; |
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struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); |
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for_each_card_components(card, component) { |
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if (!strncmp(component->name, |
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ctx->codec_name, sizeof(ctx->codec_name))) { |
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dev_dbg(component->dev, "disabling jack detect before going to suspend.\n"); |
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rt5670_jack_suspend(component); |
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break; |
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} |
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} |
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return 0; |
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} |
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static int cht_resume_post(struct snd_soc_card *card) |
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{ |
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struct snd_soc_component *component; |
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struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); |
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for_each_card_components(card, component) { |
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if (!strncmp(component->name, |
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ctx->codec_name, sizeof(ctx->codec_name))) { |
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dev_dbg(component->dev, "enabling jack detect for resume.\n"); |
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rt5670_jack_resume(component); |
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break; |
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} |
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} |
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return 0; |
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} |
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/* use space before codec name to simplify card ID, and simplify driver name */ |
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#define SOF_CARD_NAME "bytcht rt5672" /* card name will be 'sof-bytcht rt5672' */ |
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#define SOF_DRIVER_NAME "SOF" |
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#define CARD_NAME "cht-bsw-rt5672" |
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#define DRIVER_NAME NULL /* card name will be used for driver name */ |
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/* SoC card */ |
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static struct snd_soc_card snd_soc_card_cht = { |
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.owner = THIS_MODULE, |
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.dai_link = cht_dailink, |
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.num_links = ARRAY_SIZE(cht_dailink), |
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.dapm_widgets = cht_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets), |
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.dapm_routes = cht_audio_map, |
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.num_dapm_routes = ARRAY_SIZE(cht_audio_map), |
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.controls = cht_mc_controls, |
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.num_controls = ARRAY_SIZE(cht_mc_controls), |
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.suspend_pre = cht_suspend_pre, |
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.resume_post = cht_resume_post, |
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}; |
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#define RT5672_I2C_DEFAULT "i2c-10EC5670:00" |
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static int snd_cht_mc_probe(struct platform_device *pdev) |
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{ |
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int ret_val = 0; |
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struct cht_mc_private *drv; |
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struct snd_soc_acpi_mach *mach = pdev->dev.platform_data; |
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const char *platform_name; |
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struct acpi_device *adev; |
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bool sof_parent; |
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int i; |
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drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL); |
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if (!drv) |
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return -ENOMEM; |
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strcpy(drv->codec_name, RT5672_I2C_DEFAULT); |
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|
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/* fixup codec name based on HID */ |
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adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1); |
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if (adev) { |
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snprintf(drv->codec_name, sizeof(drv->codec_name), |
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"i2c-%s", acpi_dev_name(adev)); |
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put_device(&adev->dev); |
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for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) { |
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if (!strcmp(cht_dailink[i].codecs->name, |
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RT5672_I2C_DEFAULT)) { |
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cht_dailink[i].codecs->name = drv->codec_name; |
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break; |
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} |
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} |
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} |
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|
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/* override plaform name, if required */ |
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snd_soc_card_cht.dev = &pdev->dev; |
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platform_name = mach->mach_params.platform; |
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|
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ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht, |
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platform_name); |
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if (ret_val) |
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return ret_val; |
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|
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drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3"); |
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if (IS_ERR(drv->mclk)) { |
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dev_err(&pdev->dev, |
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"Failed to get MCLK from pmc_plt_clk_3: %ld\n", |
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PTR_ERR(drv->mclk)); |
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return PTR_ERR(drv->mclk); |
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} |
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snd_soc_card_set_drvdata(&snd_soc_card_cht, drv); |
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|
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sof_parent = snd_soc_acpi_sof_parent(&pdev->dev); |
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|
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/* set card and driver name */ |
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if (sof_parent) { |
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snd_soc_card_cht.name = SOF_CARD_NAME; |
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snd_soc_card_cht.driver_name = SOF_DRIVER_NAME; |
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} else { |
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snd_soc_card_cht.name = CARD_NAME; |
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snd_soc_card_cht.driver_name = DRIVER_NAME; |
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} |
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|
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/* set pm ops */ |
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if (sof_parent) |
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pdev->dev.driver->pm = &snd_soc_pm_ops; |
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|
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/* register the soc card */ |
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ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht); |
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if (ret_val) { |
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dev_err(&pdev->dev, |
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"snd_soc_register_card failed %d\n", ret_val); |
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return ret_val; |
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} |
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platform_set_drvdata(pdev, &snd_soc_card_cht); |
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return ret_val; |
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} |
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|
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static struct platform_driver snd_cht_mc_driver = { |
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.driver = { |
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.name = "cht-bsw-rt5672", |
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}, |
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.probe = snd_cht_mc_probe, |
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}; |
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|
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module_platform_driver(snd_cht_mc_driver); |
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|
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MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); |
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MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_ALIAS("platform:cht-bsw-rt5672");
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|
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