--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * bytcr_wm5102.c - ASoc Machine driver for Intel Baytrail platforms with a
+ * Wolfson Microelectronics WM5102 codec
+ *
+ * Copyright (C) 2020 Hans de Goede <hdegoede@redhat.com>
+ * Loosely based on bytcr_rt5640.c which is:
+ * Copyright (C) 2014-2020 Intel Corp
+ * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include "../../codecs/wm5102.h"
+#include "../atom/sst-atom-controls.h"
+
+#define MCLK_FREQ 25000000
+
+#define WM5102_MAX_SYSCLK_4K 49152000 /* max sysclk for 4K family */
+#define WM5102_MAX_SYSCLK_11025 45158400 /* max sysclk for 11.025K family */
+
+struct byt_wm5102_private {
+ struct clk *mclk;
+ struct gpio_desc *spkvdd_en_gpio;
+};
+
+static int byt_wm5102_spkvdd_power_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_card *card = w->dapm->card;
+ struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
+
+ gpiod_set_value_cansleep(priv->spkvdd_en_gpio,
+ !!SND_SOC_DAPM_EVENT_ON(event));
+
+ return 0;
+}
+
+static int byt_wm5102_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai, int rate)
+{
+ struct snd_soc_component *codec_component = codec_dai->component;
+ int sr_mult = ((rate % 4000) == 0) ?
+ (WM5102_MAX_SYSCLK_4K / rate) :
+ (WM5102_MAX_SYSCLK_11025 / rate);
+ int ret;
+
+ /* Reset FLL1 */
+ snd_soc_dai_set_pll(codec_dai, WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0);
+ snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0);
+
+ /* Configure the FLL1 PLL before selecting it */
+ ret = snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_CLK_SRC_MCLK1,
+ MCLK_FREQ, rate * sr_mult);
+ if (ret) {
+ dev_err(codec_component->dev, "Error setting PLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_component_set_sysclk(codec_component, ARIZONA_CLK_SYSCLK,
+ ARIZONA_CLK_SRC_FLL1, rate * sr_mult,
+ SND_SOC_CLOCK_IN);
+ if (ret) {
+ dev_err(codec_component->dev, "Error setting SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK,
+ rate * 512, SND_SOC_CLOCK_IN);
+ if (ret) {
+ dev_err(codec_component->dev, "Error setting clock: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int platform_clock_control(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ struct snd_soc_dapm_context *dapm = w->dapm;
+ struct snd_soc_card *card = dapm->card;
+ struct snd_soc_dai *codec_dai;
+ struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ codec_dai = snd_soc_card_get_codec_dai(card, "wm5102-aif1");
+ if (!codec_dai) {
+ dev_err(card->dev, "Error codec DAI not found\n");
+ return -EIO;
+ }
+
+ if (SND_SOC_DAPM_EVENT_ON(event)) {
+ ret = clk_prepare_enable(priv->mclk);
+ if (ret) {
+ dev_err(card->dev, "Error enabling MCLK: %d\n", ret);
+ return ret;
+ }
+ ret = byt_wm5102_prepare_and_enable_pll1(codec_dai, 48000);
+ if (ret) {
+ dev_err(card->dev, "Error setting codec sysclk: %d\n", ret);
+ return ret;
+ }
+ } else {
+ /*
+ * The WM5102 has a separate 32KHz clock for jack-detect
+ * so we can disable the PLL, followed by disabling the
+ * platform clock which is the source-clock for the PLL.
+ */
+ snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0);
+ clk_disable_unprepare(priv->mclk);
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget byt_wm5102_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+ SND_SOC_DAPM_MIC("Internal Mic", NULL),
+ SND_SOC_DAPM_SPK("Speaker", NULL),
+ SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
+ platform_clock_control, SND_SOC_DAPM_PRE_PMU |
+ SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SUPPLY("Speaker VDD", SND_SOC_NOPM, 0, 0,
+ byt_wm5102_spkvdd_power_event,
+ SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_audio_map[] = {
+ {"Headphone", NULL, "Platform Clock"},
+ {"Headset Mic", NULL, "Platform Clock"},
+ {"Internal Mic", NULL, "Platform Clock"},
+ {"Speaker", NULL, "Platform Clock"},
+
+ {"Speaker", NULL, "SPKOUTLP"},
+ {"Speaker", NULL, "SPKOUTLN"},
+ {"Speaker", NULL, "SPKOUTRP"},
+ {"Speaker", NULL, "SPKOUTRN"},
+ {"Speaker", NULL, "Speaker VDD"},
+
+ {"Headphone", NULL, "HPOUT1L"},
+ {"Headphone", NULL, "HPOUT1R"},
+
+ {"Internal Mic", NULL, "MICBIAS3"},
+ {"IN3L", NULL, "Internal Mic"},
+
+ /*
+ * The Headset Mix uses MICBIAS1 or 2 depending on if a CTIA/OMTP Headset
+ * is connected, as the MICBIAS is applied after the CTIA/OMTP cross-switch.
+ */
+ {"Headset Mic", NULL, "MICBIAS1"},
+ {"Headset Mic", NULL, "MICBIAS2"},
+ {"IN1L", NULL, "Headset Mic"},
+
+ {"AIF1 Playback", NULL, "ssp0 Tx"},
+ {"ssp0 Tx", NULL, "modem_out"},
+
+ {"modem_in", NULL, "ssp0 Rx"},
+ {"ssp0 Rx", NULL, "AIF1 Capture"},
+};
+
+static const struct snd_kcontrol_new byt_wm5102_controls[] = {
+ SOC_DAPM_PIN_SWITCH("Headphone"),
+ SOC_DAPM_PIN_SWITCH("Headset Mic"),
+ SOC_DAPM_PIN_SWITCH("Internal Mic"),
+ SOC_DAPM_PIN_SWITCH("Speaker"),
+};
+
+static int byt_wm5102_init(struct snd_soc_pcm_runtime *runtime)
+{
+ struct snd_soc_card *card = runtime->card;
+ struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ card->dapm.idle_bias_off = true;
+
+ ret = snd_soc_add_card_controls(card, byt_wm5102_controls,
+ ARRAY_SIZE(byt_wm5102_controls));
+ if (ret) {
+ dev_err(card->dev, "Error adding card controls: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * The firmware might enable the clock at boot (this information
+ * may or may not be reflected in the enable clock register).
+ * To change the rate we must disable the clock first to cover these
+ * cases. Due to common clock framework restrictions that do not allow
+ * to disable a clock that has not been enabled, we need to enable
+ * the clock first.
+ */
+ ret = clk_prepare_enable(priv->mclk);
+ if (!ret)
+ clk_disable_unprepare(priv->mclk);
+
+ ret = clk_set_rate(priv->mclk, MCLK_FREQ);
+ if (ret) {
+ dev_err(card->dev, "Error setting MCLK rate: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_pcm_stream byt_wm5102_dai_params = {
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+};
+
+static int byt_wm5102_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);
+ int ret;
+
+ /* The DSP will covert the FE rate to 48k, stereo */
+ rate->min = 48000;
+ rate->max = 48000;
+ channels->min = 2;
+ channels->max = 2;
+
+ /* set SSP0 to 16-bit */
+ params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
+
+ /*
+ * Default mode for SSP configuration is TDM 4 slot, override config
+ * with explicit setting to I2S 2ch 16-bit. The word length is set with
+ * dai_set_tdm_slot() since there is no other API exposed
+ */
+ ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
+ SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (ret) {
+ dev_err(rtd->dev, "Error setting format to I2S: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 16);
+ if (ret) {
+ dev_err(rtd->dev, "Error setting I2S config: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int byt_wm5102_aif1_startup(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_hw_constraint_single(substream->runtime,
+ SNDRV_PCM_HW_PARAM_RATE, 48000);
+}
+
+static const struct snd_soc_ops byt_wm5102_aif1_ops = {
+ .startup = byt_wm5102_aif1_startup,
+};
+
+SND_SOC_DAILINK_DEF(dummy,
+ DAILINK_COMP_ARRAY(COMP_DUMMY()));
+
+SND_SOC_DAILINK_DEF(media,
+ DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
+
+SND_SOC_DAILINK_DEF(deepbuffer,
+ DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
+
+SND_SOC_DAILINK_DEF(ssp0_port,
+ DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
+
+SND_SOC_DAILINK_DEF(ssp0_codec,
+ DAILINK_COMP_ARRAY(COMP_CODEC(
+ /*
+ * Note there is no need to overwrite the codec-name as is done in
+ * other bytcr machine drivers, because the codec is a MFD child-dev.
+ */
+ "wm5102-codec",
+ "wm5102-aif1")));
+
+SND_SOC_DAILINK_DEF(platform,
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
+
+static struct snd_soc_dai_link byt_wm5102_dais[] = {
+ [MERR_DPCM_AUDIO] = {
+ .name = "Baytrail Audio Port",
+ .stream_name = "Baytrail Audio",
+ .nonatomic = true,
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ .ops = &byt_wm5102_aif1_ops,
+ SND_SOC_DAILINK_REG(media, dummy, platform),
+
+ },
+ [MERR_DPCM_DEEP_BUFFER] = {
+ .name = "Deep-Buffer Audio Port",
+ .stream_name = "Deep-Buffer Audio",
+ .nonatomic = true,
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ .ops = &byt_wm5102_aif1_ops,
+ SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
+ },
+ /* back ends */
+ {
+ /*
+ * This must be named SSP2-Codec even though this machine driver
+ * always uses SSP0. Most machine drivers support both and dynamically
+ * update the dailink to point to SSP0 or SSP2, while keeping the name
+ * as "SSP2-Codec". The SOF tplg files hardcode the "SSP2-Codec" even
+ * in the byt-foo-ssp0.tplg versions because the other machine-drivers
+ * use "SSP2-Codec" even when SSP0 is used.
+ */
+ .name = "SSP2-Codec",
+ .id = 0,
+ .no_pcm = 1,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBS_CFS,
+ .be_hw_params_fixup = byt_wm5102_codec_fixup,
+ .nonatomic = true,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ .init = byt_wm5102_init,
+ SND_SOC_DAILINK_REG(ssp0_port, ssp0_codec, platform),
+ },
+};
+
+/* use space before codec name to simplify card ID, and simplify driver name */
+#define SOF_CARD_NAME "bytcht wm5102" /* card name will be 'sof-bytcht wm5102' */
+#define SOF_DRIVER_NAME "SOF"
+
+#define CARD_NAME "bytcr-wm5102"
+#define DRIVER_NAME NULL /* card name will be used for driver name */
+
+/* SoC card */
+static struct snd_soc_card byt_wm5102_card = {
+ .owner = THIS_MODULE,
+ .dai_link = byt_wm5102_dais,
+ .num_links = ARRAY_SIZE(byt_wm5102_dais),
+ .dapm_widgets = byt_wm5102_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(byt_wm5102_widgets),
+ .dapm_routes = byt_wm5102_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(byt_wm5102_audio_map),
+ .fully_routed = true,
+};
+
+static int snd_byt_wm5102_mc_probe(struct platform_device *pdev)
+{
+ char codec_name[SND_ACPI_I2C_ID_LEN];
+ struct device *dev = &pdev->dev;
+ struct byt_wm5102_private *priv;
+ struct snd_soc_acpi_mach *mach;
+ const char *platform_name;
+ struct acpi_device *adev;
+ struct device *codec_dev;
+ bool sof_parent;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_ATOMIC);
+ if (!priv)
+ return -ENOMEM;
+
+ /* Get MCLK */
+ priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3");
+ if (IS_ERR(priv->mclk))
+ return dev_err_probe(dev, PTR_ERR(priv->mclk), "getting pmc_plt_clk_3\n");
+
+ /*
+ * Get speaker VDD enable GPIO:
+ * 1. Get codec-device-name
+ * 2. Get codec-device
+ * 3. Get GPIO from codec-device
+ */
+ mach = dev->platform_data;
+ adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
+ if (!adev) {
+ dev_err(dev, "Error cannot find acpi-dev for codec\n");
+ return -ENOENT;
+ }
+ snprintf(codec_name, sizeof(codec_name), "spi-%s", acpi_dev_name(adev));
+ put_device(&adev->dev);
+
+ codec_dev = bus_find_device_by_name(&spi_bus_type, NULL, codec_name);
+ if (!codec_dev)
+ return -EPROBE_DEFER;
+
+ /* Note no devm_ here since we call gpiod_get on codec_dev rather then dev */
+ priv->spkvdd_en_gpio = gpiod_get(codec_dev, "wlf,spkvdd-ena", GPIOD_OUT_LOW);
+ put_device(codec_dev);
+
+ if (IS_ERR(priv->spkvdd_en_gpio))
+ return dev_err_probe(dev, PTR_ERR(priv->spkvdd_en_gpio), "getting spkvdd-GPIO\n");
+
+ /* override platform name, if required */
+ byt_wm5102_card.dev = dev;
+ platform_name = mach->mach_params.platform;
+ ret = snd_soc_fixup_dai_links_platform_name(&byt_wm5102_card, platform_name);
+ if (ret)
+ goto out_put_gpio;
+
+ /* set card and driver name and pm-ops */
+ sof_parent = snd_soc_acpi_sof_parent(dev);
+ if (sof_parent) {
+ byt_wm5102_card.name = SOF_CARD_NAME;
+ byt_wm5102_card.driver_name = SOF_DRIVER_NAME;
+ dev->driver->pm = &snd_soc_pm_ops;
+ } else {
+ byt_wm5102_card.name = CARD_NAME;
+ byt_wm5102_card.driver_name = DRIVER_NAME;
+ }
+
+ snd_soc_card_set_drvdata(&byt_wm5102_card, priv);
+ ret = devm_snd_soc_register_card(dev, &byt_wm5102_card);
+ if (ret) {
+ dev_err_probe(dev, ret, "registering card\n");
+ goto out_put_gpio;
+ }
+
+ platform_set_drvdata(pdev, &byt_wm5102_card);
+ return 0;
+
+out_put_gpio:
+ gpiod_put(priv->spkvdd_en_gpio);
+ return ret;
+}
+
+static int snd_byt_wm5102_mc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
+
+ gpiod_put(priv->spkvdd_en_gpio);
+ return 0;
+}
+
+static struct platform_driver snd_byt_wm5102_mc_driver = {
+ .driver = {
+ .name = "bytcr_wm5102",
+ },
+ .probe = snd_byt_wm5102_mc_probe,
+ .remove = snd_byt_wm5102_mc_remove,
+};
+
+module_platform_driver(snd_byt_wm5102_mc_driver);
+
+MODULE_DESCRIPTION("ASoC Baytrail with WM5102 codec machine driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:bytcr_wm5102");
projects / linux-2.6-microblaze.git / commitdiff