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465 lines
13 KiB
465 lines
13 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* bytcr_wm5102.c - ASoc Machine driver for Intel Baytrail platforms with a |
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* Wolfson Microelectronics WM5102 codec |
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* |
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* Copyright (C) 2020 Hans de Goede <[email protected]> |
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* Loosely based on bytcr_rt5640.c which is: |
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* Copyright (C) 2014-2020 Intel Corp |
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* Author: Subhransu S. Prusty <[email protected]> |
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*/ |
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#include <linux/acpi.h> |
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#include <linux/clk.h> |
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#include <linux/device.h> |
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#include <linux/init.h> |
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#include <linux/module.h> |
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#include <linux/moduleparam.h> |
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#include <linux/platform_device.h> |
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#include <linux/slab.h> |
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#include <linux/spi/spi.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/soc-acpi.h> |
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#include "../../codecs/wm5102.h" |
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#include "../atom/sst-atom-controls.h" |
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#define MCLK_FREQ 25000000 |
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#define WM5102_MAX_SYSCLK_4K 49152000 /* max sysclk for 4K family */ |
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#define WM5102_MAX_SYSCLK_11025 45158400 /* max sysclk for 11.025K family */ |
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struct byt_wm5102_private { |
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struct clk *mclk; |
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struct gpio_desc *spkvdd_en_gpio; |
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}; |
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static int byt_wm5102_spkvdd_power_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_card *card = w->dapm->card; |
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struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); |
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gpiod_set_value_cansleep(priv->spkvdd_en_gpio, |
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!!SND_SOC_DAPM_EVENT_ON(event)); |
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return 0; |
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} |
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static int byt_wm5102_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai, int rate) |
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{ |
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struct snd_soc_component *codec_component = codec_dai->component; |
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int sr_mult = ((rate % 4000) == 0) ? |
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(WM5102_MAX_SYSCLK_4K / rate) : |
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(WM5102_MAX_SYSCLK_11025 / rate); |
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int ret; |
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/* Reset FLL1 */ |
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snd_soc_dai_set_pll(codec_dai, WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0); |
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snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0); |
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/* Configure the FLL1 PLL before selecting it */ |
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ret = snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_CLK_SRC_MCLK1, |
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MCLK_FREQ, rate * sr_mult); |
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if (ret) { |
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dev_err(codec_component->dev, "Error setting PLL: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_component_set_sysclk(codec_component, ARIZONA_CLK_SYSCLK, |
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ARIZONA_CLK_SRC_FLL1, rate * sr_mult, |
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SND_SOC_CLOCK_IN); |
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if (ret) { |
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dev_err(codec_component->dev, "Error setting SYSCLK: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK, |
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rate * 512, SND_SOC_CLOCK_IN); |
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if (ret) { |
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dev_err(codec_component->dev, "Error setting clock: %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 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 byt_wm5102_private *priv = 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, "wm5102-aif1"); |
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if (!codec_dai) { |
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dev_err(card->dev, "Error codec DAI not found\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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ret = clk_prepare_enable(priv->mclk); |
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if (ret) { |
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dev_err(card->dev, "Error enabling MCLK: %d\n", ret); |
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return ret; |
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} |
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ret = byt_wm5102_prepare_and_enable_pll1(codec_dai, 48000); |
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if (ret) { |
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dev_err(card->dev, "Error setting codec sysclk: %d\n", ret); |
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return ret; |
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} |
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} else { |
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/* |
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* The WM5102 has a separate 32KHz clock for jack-detect |
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* so we can disable the PLL, followed by disabling the |
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* platform clock which is the source-clock for the PLL. |
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*/ |
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snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0); |
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clk_disable_unprepare(priv->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 byt_wm5102_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("Internal Mic", NULL), |
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SND_SOC_DAPM_SPK("Speaker", 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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SND_SOC_DAPM_SUPPLY("Speaker VDD", SND_SOC_NOPM, 0, 0, |
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byt_wm5102_spkvdd_power_event, |
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SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), |
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}; |
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static const struct snd_soc_dapm_route byt_wm5102_audio_map[] = { |
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{"Headphone", NULL, "Platform Clock"}, |
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{"Headset Mic", NULL, "Platform Clock"}, |
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{"Internal Mic", NULL, "Platform Clock"}, |
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{"Speaker", NULL, "Platform Clock"}, |
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{"Speaker", NULL, "SPKOUTLP"}, |
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{"Speaker", NULL, "SPKOUTLN"}, |
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{"Speaker", NULL, "SPKOUTRP"}, |
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{"Speaker", NULL, "SPKOUTRN"}, |
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{"Speaker", NULL, "Speaker VDD"}, |
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{"Headphone", NULL, "HPOUT1L"}, |
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{"Headphone", NULL, "HPOUT1R"}, |
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{"Internal Mic", NULL, "MICBIAS3"}, |
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{"IN3L", NULL, "Internal Mic"}, |
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/* |
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* The Headset Mix uses MICBIAS1 or 2 depending on if a CTIA/OMTP Headset |
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* is connected, as the MICBIAS is applied after the CTIA/OMTP cross-switch. |
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*/ |
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{"Headset Mic", NULL, "MICBIAS1"}, |
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{"Headset Mic", NULL, "MICBIAS2"}, |
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{"IN1L", NULL, "Headset Mic"}, |
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{"AIF1 Playback", NULL, "ssp0 Tx"}, |
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{"ssp0 Tx", NULL, "modem_out"}, |
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{"modem_in", NULL, "ssp0 Rx"}, |
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{"ssp0 Rx", NULL, "AIF1 Capture"}, |
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}; |
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static const struct snd_kcontrol_new byt_wm5102_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("Internal Mic"), |
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SOC_DAPM_PIN_SWITCH("Speaker"), |
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}; |
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static int byt_wm5102_init(struct snd_soc_pcm_runtime *runtime) |
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{ |
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struct snd_soc_card *card = runtime->card; |
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struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); |
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int ret; |
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card->dapm.idle_bias_off = true; |
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ret = snd_soc_add_card_controls(card, byt_wm5102_controls, |
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ARRAY_SIZE(byt_wm5102_controls)); |
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if (ret) { |
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dev_err(card->dev, "Error adding card controls: %d\n", ret); |
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return ret; |
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} |
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/* |
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* The firmware might enable the clock at boot (this information |
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* may or may not be reflected in the enable clock register). |
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* To change the rate we must disable the clock first to cover these |
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* cases. Due to common clock framework restrictions that do not allow |
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* to disable a clock that has not been enabled, we need to enable |
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* the clock first. |
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*/ |
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ret = clk_prepare_enable(priv->mclk); |
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if (!ret) |
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clk_disable_unprepare(priv->mclk); |
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ret = clk_set_rate(priv->mclk, MCLK_FREQ); |
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if (ret) { |
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dev_err(card->dev, "Error setting MCLK rate: %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 snd_soc_pcm_stream byt_wm5102_dai_params = { |
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.formats = SNDRV_PCM_FMTBIT_S16_LE, |
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.rate_min = 48000, |
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.rate_max = 48000, |
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.channels_min = 2, |
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.channels_max = 2, |
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}; |
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static int byt_wm5102_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 */ |
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rate->min = 48000; |
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rate->max = 48000; |
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channels->min = 2; |
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channels->max = 2; |
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/* set SSP0 to 16-bit */ |
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params_set_format(params, SNDRV_PCM_FORMAT_S16_LE); |
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/* |
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* Default mode for SSP configuration is TDM 4 slot, override config |
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* with explicit setting to I2S 2ch 16-bit. The word length is set with |
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* dai_set_tdm_slot() since there is no other API exposed |
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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) { |
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dev_err(rtd->dev, "Error setting format to I2S: %d\n", ret); |
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return ret; |
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} |
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ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 16); |
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if (ret) { |
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dev_err(rtd->dev, "Error setting I2S config: %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 byt_wm5102_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 byt_wm5102_aif1_ops = { |
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.startup = byt_wm5102_aif1_startup, |
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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(ssp0_port, |
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DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port"))); |
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SND_SOC_DAILINK_DEF(ssp0_codec, |
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DAILINK_COMP_ARRAY(COMP_CODEC( |
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/* |
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* Note there is no need to overwrite the codec-name as is done in |
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* other bytcr machine drivers, because the codec is a MFD child-dev. |
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*/ |
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"wm5102-codec", |
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"wm5102-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 byt_wm5102_dais[] = { |
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[MERR_DPCM_AUDIO] = { |
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.name = "Baytrail Audio Port", |
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.stream_name = "Baytrail 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 = &byt_wm5102_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 = &byt_wm5102_aif1_ops, |
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SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), |
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}, |
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/* back ends */ |
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{ |
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/* |
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* This must be named SSP2-Codec even though this machine driver |
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* always uses SSP0. Most machine drivers support both and dynamically |
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* update the dailink to point to SSP0 or SSP2, while keeping the name |
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* as "SSP2-Codec". The SOF tplg files hardcode the "SSP2-Codec" even |
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* in the byt-foo-ssp0.tplg versions because the other machine-drivers |
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* use "SSP2-Codec" even when SSP0 is used. |
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*/ |
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.name = "SSP2-Codec", |
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.id = 0, |
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.no_pcm = 1, |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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| SND_SOC_DAIFMT_CBS_CFS, |
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.be_hw_params_fixup = byt_wm5102_codec_fixup, |
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.nonatomic = true, |
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.dpcm_playback = 1, |
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.dpcm_capture = 1, |
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.init = byt_wm5102_init, |
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SND_SOC_DAILINK_REG(ssp0_port, ssp0_codec, platform), |
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}, |
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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 wm5102" /* card name will be 'sof-bytcht wm5102' */ |
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#define SOF_DRIVER_NAME "SOF" |
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#define CARD_NAME "bytcr-wm5102" |
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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 byt_wm5102_card = { |
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.owner = THIS_MODULE, |
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.dai_link = byt_wm5102_dais, |
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.num_links = ARRAY_SIZE(byt_wm5102_dais), |
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.dapm_widgets = byt_wm5102_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(byt_wm5102_widgets), |
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.dapm_routes = byt_wm5102_audio_map, |
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.num_dapm_routes = ARRAY_SIZE(byt_wm5102_audio_map), |
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.fully_routed = true, |
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}; |
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static int snd_byt_wm5102_mc_probe(struct platform_device *pdev) |
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{ |
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char codec_name[SND_ACPI_I2C_ID_LEN]; |
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struct device *dev = &pdev->dev; |
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struct byt_wm5102_private *priv; |
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struct snd_soc_acpi_mach *mach; |
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const char *platform_name; |
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struct acpi_device *adev; |
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struct device *codec_dev; |
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bool sof_parent; |
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int ret; |
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_ATOMIC); |
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if (!priv) |
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return -ENOMEM; |
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/* Get MCLK */ |
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priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3"); |
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if (IS_ERR(priv->mclk)) |
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return dev_err_probe(dev, PTR_ERR(priv->mclk), "getting pmc_plt_clk_3\n"); |
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/* |
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* Get speaker VDD enable GPIO: |
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* 1. Get codec-device-name |
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* 2. Get codec-device |
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* 3. Get GPIO from codec-device |
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*/ |
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mach = dev->platform_data; |
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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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dev_err(dev, "Error cannot find acpi-dev for codec\n"); |
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return -ENOENT; |
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} |
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snprintf(codec_name, sizeof(codec_name), "spi-%s", acpi_dev_name(adev)); |
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put_device(&adev->dev); |
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codec_dev = bus_find_device_by_name(&spi_bus_type, NULL, codec_name); |
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if (!codec_dev) |
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return -EPROBE_DEFER; |
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/* Note no devm_ here since we call gpiod_get on codec_dev rather then dev */ |
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priv->spkvdd_en_gpio = gpiod_get(codec_dev, "wlf,spkvdd-ena", GPIOD_OUT_LOW); |
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put_device(codec_dev); |
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if (IS_ERR(priv->spkvdd_en_gpio)) |
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return dev_err_probe(dev, PTR_ERR(priv->spkvdd_en_gpio), "getting spkvdd-GPIO\n"); |
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/* override platform name, if required */ |
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byt_wm5102_card.dev = dev; |
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platform_name = mach->mach_params.platform; |
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ret = snd_soc_fixup_dai_links_platform_name(&byt_wm5102_card, platform_name); |
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if (ret) |
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goto out_put_gpio; |
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/* set card and driver name and pm-ops */ |
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sof_parent = snd_soc_acpi_sof_parent(dev); |
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if (sof_parent) { |
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byt_wm5102_card.name = SOF_CARD_NAME; |
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byt_wm5102_card.driver_name = SOF_DRIVER_NAME; |
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dev->driver->pm = &snd_soc_pm_ops; |
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} else { |
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byt_wm5102_card.name = CARD_NAME; |
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byt_wm5102_card.driver_name = DRIVER_NAME; |
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} |
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snd_soc_card_set_drvdata(&byt_wm5102_card, priv); |
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ret = devm_snd_soc_register_card(dev, &byt_wm5102_card); |
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if (ret) { |
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dev_err_probe(dev, ret, "registering card\n"); |
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goto out_put_gpio; |
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} |
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platform_set_drvdata(pdev, &byt_wm5102_card); |
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return 0; |
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out_put_gpio: |
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gpiod_put(priv->spkvdd_en_gpio); |
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return ret; |
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} |
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static int snd_byt_wm5102_mc_remove(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card = platform_get_drvdata(pdev); |
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struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); |
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gpiod_put(priv->spkvdd_en_gpio); |
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return 0; |
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} |
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static struct platform_driver snd_byt_wm5102_mc_driver = { |
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.driver = { |
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.name = "bytcr_wm5102", |
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}, |
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.probe = snd_byt_wm5102_mc_probe, |
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.remove = snd_byt_wm5102_mc_remove, |
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}; |
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module_platform_driver(snd_byt_wm5102_mc_driver); |
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MODULE_DESCRIPTION("ASoC Baytrail with WM5102 codec machine driver"); |
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MODULE_AUTHOR("Hans de Goede <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_ALIAS("platform:bytcr_wm5102");
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