--- /dev/null
+From 2c3e4f06b7e7d34a03e747367c26805fbf89a4ac Mon Sep 17 00:00:00 2001
+From: Matthias Reichl <hias@horus.com>
+Date: Sun, 22 Jan 2017 12:49:37 +0100
+Subject: [PATCH] ASoC: Add driver for Cirrus Logic Audio Card
+
+Note: due to problems with deferred probing of regulators
+the following softdep should be added to a modprobe.d file
+
+softdep arizona-spi pre: arizona-ldo1
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ sound/soc/bcm/rpi-cirrus.c | 1029 ++++++++++++++++++++++++++++++++++++
+ 1 file changed, 1029 insertions(+)
+ create mode 100644 sound/soc/bcm/rpi-cirrus.c
+
+--- /dev/null
++++ b/sound/soc/bcm/rpi-cirrus.c
+@@ -0,0 +1,1029 @@
++/*
++ * ASoC machine driver for Cirrus Logic Audio Card
++ * (with WM5102 and WM8804 codecs)
++ *
++ * Copyright 2015-2017 Matthias Reichl <hias@horus.com>
++ *
++ * Based on rpi-cirrus-sound-pi driver (c) Wolfson / Cirrus Logic Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/slab.h>
++#include <linux/list.h>
++#include <linux/delay.h>
++#include <sound/pcm_params.h>
++
++#include <linux/mfd/arizona/registers.h>
++
++#include "../codecs/wm5102.h"
++#include "../codecs/wm8804.h"
++
++#define WM8804_CLKOUT_HZ 12000000
++
++#define RPI_CIRRUS_DEFAULT_RATE 44100
++#define WM5102_MAX_SYSCLK_1 49152000 /* max sysclk for 4K family */
++#define WM5102_MAX_SYSCLK_2 45158400 /* max sysclk for 11.025K family */
++
++static inline unsigned int calc_sysclk(unsigned int rate)
++{
++ return (rate % 4000) ? WM5102_MAX_SYSCLK_2 : WM5102_MAX_SYSCLK_1;
++}
++
++enum {
++ DAI_WM5102 = 0,
++ DAI_WM8804,
++};
++
++struct rpi_cirrus_priv {
++ /* mutex for synchronzing FLL1 access with DAPM */
++ struct mutex lock;
++ unsigned int card_rate;
++ int sync_path_enable;
++ int fll1_freq; /* negative means RefClock in spdif rx case */
++
++ /* track hw params/free for substreams */
++ unsigned int params_set;
++ unsigned int min_rate_idx, max_rate_idx;
++ unsigned char iec958_status[4];
++};
++
++/* helper functions */
++static inline struct snd_soc_pcm_runtime *get_wm5102_runtime(
++ struct snd_soc_card *card) {
++ return snd_soc_get_pcm_runtime(card, card->dai_link[DAI_WM5102].name);
++}
++
++static inline struct snd_soc_pcm_runtime *get_wm8804_runtime(
++ struct snd_soc_card *card) {
++ return snd_soc_get_pcm_runtime(card, card->dai_link[DAI_WM8804].name);
++}
++
++
++struct rate_info {
++ unsigned int value;
++ char *text;
++};
++
++static struct rate_info min_rates[] = {
++ { 0, "off"},
++ { 32000, "32kHz"},
++ { 44100, "44.1kHz"}
++};
++
++#define NUM_MIN_RATES ARRAY_SIZE(min_rates)
++
++static int rpi_cirrus_min_rate_info(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++ uinfo->count = 1;
++ uinfo->value.enumerated.items = NUM_MIN_RATES;
++
++ if (uinfo->value.enumerated.item >= NUM_MIN_RATES)
++ uinfo->value.enumerated.item = NUM_MIN_RATES - 1;
++ strcpy(uinfo->value.enumerated.name,
++ min_rates[uinfo->value.enumerated.item].text);
++ return 0;
++}
++
++static int rpi_cirrus_min_rate_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++
++ ucontrol->value.enumerated.item[0] = priv->min_rate_idx;
++ return 0;
++}
++
++static int rpi_cirrus_min_rate_put(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ int changed = 0;
++
++ if (priv->min_rate_idx != ucontrol->value.enumerated.item[0]) {
++ changed = 1;
++ priv->min_rate_idx = ucontrol->value.enumerated.item[0];
++ }
++
++ return changed;
++}
++
++static struct rate_info max_rates[] = {
++ { 0, "off"},
++ { 48000, "48kHz"},
++ { 96000, "96kHz"}
++};
++
++#define NUM_MAX_RATES ARRAY_SIZE(max_rates)
++
++static int rpi_cirrus_max_rate_info(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++ uinfo->count = 1;
++ uinfo->value.enumerated.items = NUM_MAX_RATES;
++ if (uinfo->value.enumerated.item >= NUM_MAX_RATES)
++ uinfo->value.enumerated.item = NUM_MAX_RATES - 1;
++ strcpy(uinfo->value.enumerated.name,
++ max_rates[uinfo->value.enumerated.item].text);
++ return 0;
++}
++
++static int rpi_cirrus_max_rate_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++
++ ucontrol->value.enumerated.item[0] = priv->max_rate_idx;
++ return 0;
++}
++
++static int rpi_cirrus_max_rate_put(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ int changed = 0;
++
++ if (priv->max_rate_idx != ucontrol->value.enumerated.item[0]) {
++ changed = 1;
++ priv->max_rate_idx = ucontrol->value.enumerated.item[0];
++ }
++
++ return changed;
++}
++
++static int rpi_cirrus_spdif_info(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
++ uinfo->count = 1;
++ return 0;
++}
++
++static int rpi_cirrus_spdif_playback_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ int i;
++
++ for (i = 0; i < 4; i++)
++ ucontrol->value.iec958.status[i] = priv->iec958_status[i];
++
++ return 0;
++}
++
++static int rpi_cirrus_spdif_playback_put(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_component *wm8804_component =
++ get_wm8804_runtime(card)->codec_dai->component;
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ unsigned char *stat = priv->iec958_status;
++ unsigned char *ctrl_stat = ucontrol->value.iec958.status;
++ unsigned int mask;
++ int i, changed = 0;
++
++ for (i = 0; i < 4; i++) {
++ mask = (i == 3) ? 0x3f : 0xff;
++ if ((ctrl_stat[i] & mask) != (stat[i] & mask)) {
++ changed = 1;
++ stat[i] = ctrl_stat[i] & mask;
++ snd_soc_component_update_bits(wm8804_component,
++ WM8804_SPDTX1 + i, mask, stat[i]);
++ }
++ }
++
++ return changed;
++}
++
++static int rpi_cirrus_spdif_mask_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ ucontrol->value.iec958.status[0] = 0xff;
++ ucontrol->value.iec958.status[1] = 0xff;
++ ucontrol->value.iec958.status[2] = 0xff;
++ ucontrol->value.iec958.status[3] = 0x3f;
++
++ return 0;
++}
++
++static int rpi_cirrus_spdif_capture_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_component *wm8804_component =
++ get_wm8804_runtime(card)->codec_dai->component;
++ unsigned int val, mask;
++ int i, ret;
++
++ for (i = 0; i < 4; i++) {
++ ret = snd_soc_component_read(wm8804_component,
++ WM8804_RXCHAN1 + i, &val);
++ if (ret)
++ return ret;
++ mask = (i == 3) ? 0x3f : 0xff;
++ ucontrol->value.iec958.status[i] = val & mask;
++ }
++
++ return 0;
++}
++
++#define SPDIF_FLAG_CTRL(desc, reg, bit, invert) \
++{ \
++ .access = SNDRV_CTL_ELEM_ACCESS_READ \
++ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
++ .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, NONE) \
++ desc " Flag", \
++ .info = snd_ctl_boolean_mono_info, \
++ .get = rpi_cirrus_spdif_status_flag_get, \
++ .private_value = \
++ (bit) | ((reg) << 8) | ((invert) << 16) \
++}
++
++static int rpi_cirrus_spdif_status_flag_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_component *wm8804_component =
++ get_wm8804_runtime(card)->codec_dai->component;
++
++ unsigned int bit = kcontrol->private_value & 0xff;
++ unsigned int reg = (kcontrol->private_value >> 8) & 0xff;
++ unsigned int invert = (kcontrol->private_value >> 16) & 0xff;
++ int ret;
++ unsigned int val;
++ bool flag;
++
++ ret = snd_soc_component_read(wm8804_component, reg, &val);
++ if (ret)
++ return ret;
++
++ flag = val & (1 << bit);
++
++ ucontrol->value.integer.value[0] = invert ? !flag : flag;
++
++ return 0;
++}
++
++static const char * const recovered_frequency_texts[] = {
++ "176.4/192 kHz",
++ "88.2/96 kHz",
++ "44.1/48 kHz",
++ "32 kHz"
++};
++
++#define NUM_RECOVERED_FREQUENCIES \
++ ARRAY_SIZE(recovered_frequency_texts)
++
++static int rpi_cirrus_recovered_frequency_info(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_info *uinfo)
++{
++ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++ uinfo->count = 1;
++ uinfo->value.enumerated.items = NUM_RECOVERED_FREQUENCIES;
++ if (uinfo->value.enumerated.item >= NUM_RECOVERED_FREQUENCIES)
++ uinfo->value.enumerated.item = NUM_RECOVERED_FREQUENCIES - 1;
++ strcpy(uinfo->value.enumerated.name,
++ recovered_frequency_texts[uinfo->value.enumerated.item]);
++ return 0;
++}
++
++static int rpi_cirrus_recovered_frequency_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_component *wm8804_component =
++ get_wm8804_runtime(card)->codec_dai->component;
++ unsigned int val;
++ int ret;
++
++ ret = snd_soc_component_read(wm8804_component, WM8804_SPDSTAT, &val);
++ if (ret)
++ return ret;
++
++ ucontrol->value.enumerated.item[0] = (val >> 4) & 0x03;
++ return 0;
++}
++
++static const struct snd_kcontrol_new rpi_cirrus_controls[] = {
++ {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = "Min Sample Rate",
++ .info = rpi_cirrus_min_rate_info,
++ .get = rpi_cirrus_min_rate_get,
++ .put = rpi_cirrus_min_rate_put,
++ },
++ {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = "Max Sample Rate",
++ .info = rpi_cirrus_max_rate_info,
++ .get = rpi_cirrus_max_rate_get,
++ .put = rpi_cirrus_max_rate_put,
++ },
++ {
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
++ .info = rpi_cirrus_spdif_info,
++ .get = rpi_cirrus_spdif_playback_get,
++ .put = rpi_cirrus_spdif_playback_put,
++ },
++ {
++ .access = SNDRV_CTL_ELEM_ACCESS_READ
++ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
++ .info = rpi_cirrus_spdif_info,
++ .get = rpi_cirrus_spdif_capture_get,
++ },
++ {
++ .access = SNDRV_CTL_ELEM_ACCESS_READ,
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
++ .info = rpi_cirrus_spdif_info,
++ .get = rpi_cirrus_spdif_mask_get,
++ },
++ {
++ .access = SNDRV_CTL_ELEM_ACCESS_READ
++ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
++ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++ .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, NONE)
++ "Recovered Frequency",
++ .info = rpi_cirrus_recovered_frequency_info,
++ .get = rpi_cirrus_recovered_frequency_get,
++ },
++ SPDIF_FLAG_CTRL("Audio", WM8804_SPDSTAT, 0, 1),
++ SPDIF_FLAG_CTRL("Non-PCM", WM8804_SPDSTAT, 1, 0),
++ SPDIF_FLAG_CTRL("Copyright", WM8804_SPDSTAT, 2, 1),
++ SPDIF_FLAG_CTRL("De-Emphasis", WM8804_SPDSTAT, 3, 0),
++ SPDIF_FLAG_CTRL("Lock", WM8804_SPDSTAT, 6, 1),
++ SPDIF_FLAG_CTRL("Invalid", WM8804_INTSTAT, 1, 0),
++ SPDIF_FLAG_CTRL("TransErr", WM8804_INTSTAT, 3, 0),
++};
++
++static const char * const linein_micbias_texts[] = {
++ "off", "on",
++};
++
++static SOC_ENUM_SINGLE_VIRT_DECL(linein_micbias_enum,
++ linein_micbias_texts);
++
++static const struct snd_kcontrol_new linein_micbias_mux =
++ SOC_DAPM_ENUM("Route", linein_micbias_enum);
++
++static int rpi_cirrus_spdif_rx_enable_event(struct snd_soc_dapm_widget *w,
++ struct snd_kcontrol *kcontrol, int event);
++
++const struct snd_soc_dapm_widget rpi_cirrus_dapm_widgets[] = {
++ SND_SOC_DAPM_MIC("DMIC", NULL),
++ SND_SOC_DAPM_MIC("Headset Mic", NULL),
++ SND_SOC_DAPM_INPUT("Line Input"),
++ SND_SOC_DAPM_MIC("Line Input with Micbias", NULL),
++ SND_SOC_DAPM_MUX("Line Input Micbias", SND_SOC_NOPM, 0, 0,
++ &linein_micbias_mux),
++ SND_SOC_DAPM_INPUT("dummy SPDIF in"),
++ SND_SOC_DAPM_PGA_E("dummy SPDIFRX", SND_SOC_NOPM, 0, 0, NULL, 0,
++ rpi_cirrus_spdif_rx_enable_event,
++ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
++ SND_SOC_DAPM_INPUT("Dummy Input"),
++ SND_SOC_DAPM_OUTPUT("Dummy Output"),
++};
++
++const struct snd_soc_dapm_route rpi_cirrus_dapm_routes[] = {
++ { "IN1L", NULL, "Headset Mic" },
++ { "IN1R", NULL, "Headset Mic" },
++ { "Headset Mic", NULL, "MICBIAS1" },
++
++ { "IN2L", NULL, "DMIC" },
++ { "IN2R", NULL, "DMIC" },
++ { "DMIC", NULL, "MICBIAS2" },
++
++ { "IN3L", NULL, "Line Input Micbias" },
++ { "IN3R", NULL, "Line Input Micbias" },
++
++ { "Line Input Micbias", "off", "Line Input" },
++ { "Line Input Micbias", "on", "Line Input with Micbias" },
++
++ /* Make sure MICVDD is enabled, otherwise we get noise */
++ { "Line Input", NULL, "MICVDD" },
++ { "Line Input with Micbias", NULL, "MICBIAS3" },
++
++ /* Dummy routes to check whether SPDIF RX is enabled or not */
++ {"dummy SPDIFRX", NULL, "dummy SPDIF in"},
++ {"AIFTX", NULL, "dummy SPDIFRX"},
++
++ /*
++ * Dummy routes to keep wm5102 from staying off on
++ * playback/capture if all mixers are off.
++ */
++ { "Dummy Output", NULL, "AIF1RX1" },
++ { "Dummy Output", NULL, "AIF1RX2" },
++ { "AIF1TX1", NULL, "Dummy Input" },
++ { "AIF1TX2", NULL, "Dummy Input" },
++};
++
++static int rpi_cirrus_clear_flls(struct snd_soc_card *card,
++ struct snd_soc_component *wm5102_component) {
++
++ int ret1, ret2;
++
++ ret1 = snd_soc_component_set_pll(wm5102_component,
++ WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0);
++ ret2 = snd_soc_component_set_pll(wm5102_component,
++ WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0);
++
++ if (ret1) {
++ dev_warn(card->dev,
++ "setting FLL1 to zero failed: %d\n", ret1);
++ return ret1;
++ }
++ if (ret2) {
++ dev_warn(card->dev,
++ "setting FLL1_REFCLK to zero failed: %d\n", ret2);
++ return ret2;
++ }
++ return 0;
++}
++
++static int rpi_cirrus_set_fll(struct snd_soc_card *card,
++ struct snd_soc_component *wm5102_component, unsigned int clk_freq)
++{
++ int ret = snd_soc_component_set_pll(wm5102_component,
++ WM5102_FLL1,
++ ARIZONA_CLK_SRC_MCLK1,
++ WM8804_CLKOUT_HZ,
++ clk_freq);
++ if (ret)
++ dev_err(card->dev, "Failed to set FLL1 to %d: %d\n",
++ clk_freq, ret);
++
++ usleep_range(1000, 2000);
++ return ret;
++}
++
++static int rpi_cirrus_set_fll_refclk(struct snd_soc_card *card,
++ struct snd_soc_component *wm5102_component,
++ unsigned int clk_freq, unsigned int aif2_freq)
++{
++ int ret = snd_soc_component_set_pll(wm5102_component,
++ WM5102_FLL1_REFCLK,
++ ARIZONA_CLK_SRC_MCLK1,
++ WM8804_CLKOUT_HZ,
++ clk_freq);
++ if (ret) {
++ dev_err(card->dev,
++ "Failed to set FLL1_REFCLK to %d: %d\n",
++ clk_freq, ret);
++ return ret;
++ }
++
++ ret = snd_soc_component_set_pll(wm5102_component,
++ WM5102_FLL1,
++ ARIZONA_CLK_SRC_AIF2BCLK,
++ aif2_freq, clk_freq);
++ if (ret)
++ dev_err(card->dev,
++ "Failed to set FLL1 with Sync Clock %d to %d: %d\n",
++ aif2_freq, clk_freq, ret);
++
++ usleep_range(1000, 2000);
++ return ret;
++}
++
++static int rpi_cirrus_spdif_rx_enable_event(struct snd_soc_dapm_widget *w,
++ struct snd_kcontrol *kcontrol, int event)
++{
++ struct snd_soc_card *card = w->dapm->card;
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ struct snd_soc_component *wm5102_component =
++ get_wm5102_runtime(card)->codec_dai->component;
++
++ unsigned int clk_freq, aif2_freq;
++ int ret = 0;
++
++ switch (event) {
++ case SND_SOC_DAPM_POST_PMU:
++ mutex_lock(&priv->lock);
++
++ /* Enable sync path in case of SPDIF capture use case */
++
++ clk_freq = calc_sysclk(priv->card_rate);
++ aif2_freq = 64 * priv->card_rate;
++
++ dev_dbg(card->dev,
++ "spdif_rx: changing FLL1 to use Ref Clock clk: %d spdif: %d\n",
++ clk_freq, aif2_freq);
++
++ ret = rpi_cirrus_clear_flls(card, wm5102_component);
++ if (ret) {
++ dev_err(card->dev, "spdif_rx: failed to clear FLLs\n");
++ goto out;
++ }
++
++ ret = rpi_cirrus_set_fll_refclk(card, wm5102_component,
++ clk_freq, aif2_freq);
++
++ if (ret) {
++ dev_err(card->dev, "spdif_rx: failed to set FLLs\n");
++ goto out;
++ }
++
++ /* set to negative to indicate we're doing spdif rx */
++ priv->fll1_freq = -clk_freq;
++ priv->sync_path_enable = 1;
++ break;
++
++ case SND_SOC_DAPM_POST_PMD:
++ mutex_lock(&priv->lock);
++ priv->sync_path_enable = 0;
++ break;
++
++ default:
++ return 0;
++ }
++
++out:
++ mutex_unlock(&priv->lock);
++ return ret;
++}
++
++static int rpi_cirrus_set_bias_level(struct snd_soc_card *card,
++ struct snd_soc_dapm_context *dapm,
++ enum snd_soc_bias_level level)
++{
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ struct snd_soc_pcm_runtime *wm5102_runtime = get_wm5102_runtime(card);
++ struct snd_soc_component *wm5102_component =
++ wm5102_runtime->codec_dai->component;
++
++ int ret = 0;
++ unsigned int clk_freq;
++
++ if (dapm->dev != wm5102_runtime->codec_dai->dev)
++ return 0;
++
++ switch (level) {
++ case SND_SOC_BIAS_PREPARE:
++ if (dapm->bias_level == SND_SOC_BIAS_ON)
++ break;
++
++ mutex_lock(&priv->lock);
++
++ if (!priv->sync_path_enable) {
++ clk_freq = calc_sysclk(priv->card_rate);
++
++ dev_dbg(card->dev,
++ "set_bias: changing FLL1 from %d to %d\n",
++ priv->fll1_freq, clk_freq);
++
++ ret = rpi_cirrus_set_fll(card,
++ wm5102_component, clk_freq);
++ if (ret)
++ dev_err(card->dev,
++ "set_bias: Failed to set FLL1\n");
++ else
++ priv->fll1_freq = clk_freq;
++ }
++ mutex_unlock(&priv->lock);
++ break;
++ default:
++ break;
++ }
++
++ return ret;
++}
++
++static int rpi_cirrus_set_bias_level_post(struct snd_soc_card *card,
++ struct snd_soc_dapm_context *dapm,
++ enum snd_soc_bias_level level)
++{
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ struct snd_soc_pcm_runtime *wm5102_runtime = get_wm5102_runtime(card);
++ struct snd_soc_component *wm5102_component =
++ wm5102_runtime->codec_dai->component;
++
++ if (dapm->dev != wm5102_runtime->codec_dai->dev)
++ return 0;
++
++ switch (level) {
++ case SND_SOC_BIAS_STANDBY:
++ mutex_lock(&priv->lock);
++
++ dev_dbg(card->dev,
++ "set_bias_post: changing FLL1 from %d to off\n",
++ priv->fll1_freq);
++
++ if (rpi_cirrus_clear_flls(card, wm5102_component))
++ dev_err(card->dev,
++ "set_bias_post: failed to clear FLLs\n");
++ else
++ priv->fll1_freq = 0;
++
++ mutex_unlock(&priv->lock);
++
++ break;
++ default:
++ break;
++ }
++
++ return 0;
++}
++
++static int rpi_cirrus_set_wm8804_pll(struct snd_soc_card *card,
++ struct snd_soc_dai *wm8804_dai, unsigned int rate)
++{
++ int ret;
++
++ /* use 256fs */
++ unsigned int clk_freq = rate * 256;
++
++ ret = snd_soc_dai_set_pll(wm8804_dai, 0, 0,
++ WM8804_CLKOUT_HZ, clk_freq);
++ if (ret) {
++ dev_err(card->dev,
++ "Failed to set WM8804 PLL to %d: %d\n", clk_freq, ret);
++ return ret;
++ }
++
++ /* Set MCLK as PLL Output */
++ ret = snd_soc_dai_set_sysclk(wm8804_dai,
++ WM8804_TX_CLKSRC_PLL, clk_freq, 0);
++ if (ret) {
++ dev_err(card->dev,
++ "Failed to set MCLK as PLL Output: %d\n", ret);
++ return ret;
++ }
++
++ return ret;
++}
++
++static int rpi_cirrus_startup(struct snd_pcm_substream *substream)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_card *card = rtd->card;
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ unsigned int min_rate = min_rates[priv->min_rate_idx].value;
++ unsigned int max_rate = max_rates[priv->max_rate_idx].value;
++
++ if (min_rate || max_rate) {
++ if (max_rate == 0)
++ max_rate = UINT_MAX;
++
++ dev_dbg(card->dev,
++ "startup: limiting rate to %u-%u\n",
++ min_rate, max_rate);
++
++ snd_pcm_hw_constraint_minmax(substream->runtime,
++ SNDRV_PCM_HW_PARAM_RATE, min_rate, max_rate);
++ }
++
++ return 0;
++}
++
++static struct snd_soc_pcm_stream rpi_cirrus_dai_link2_params = {
++ .formats = SNDRV_PCM_FMTBIT_S24_LE,
++ .channels_min = 2,
++ .channels_max = 2,
++ .rate_min = RPI_CIRRUS_DEFAULT_RATE,
++ .rate_max = RPI_CIRRUS_DEFAULT_RATE,
++};
++
++static int rpi_cirrus_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_card *card = rtd->card;
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ struct snd_soc_dai *bcm_i2s_dai = rtd->cpu_dai;
++ struct snd_soc_component *wm5102_component = rtd->codec_dai->component;
++ struct snd_soc_dai *wm8804_dai = get_wm8804_runtime(card)->codec_dai;
++
++ int ret;
++
++ unsigned int width = snd_pcm_format_physical_width(
++ params_format(params));
++ unsigned int rate = params_rate(params);
++ unsigned int clk_freq = calc_sysclk(rate);
++
++ mutex_lock(&priv->lock);
++
++ dev_dbg(card->dev, "hw_params: setting rate to %d\n", rate);
++
++ ret = snd_soc_dai_set_bclk_ratio(bcm_i2s_dai, 2 * width);
++ if (ret) {
++ dev_err(card->dev, "set_bclk_ratio failed: %d\n", ret);
++ goto out;
++ }
++
++ ret = snd_soc_dai_set_tdm_slot(rtd->codec_dai, 0x03, 0x03, 2, width);
++ if (ret) {
++ dev_err(card->dev, "set_tdm_slot failed: %d\n", ret);
++ goto out;
++ }
++
++ /* WM8804 supports sample rates from 32k only */
++ if (rate >= 32000) {
++ ret = rpi_cirrus_set_wm8804_pll(card, wm8804_dai, rate);
++ if (ret)
++ goto out;
++ }
++
++ ret = snd_soc_component_set_sysclk(wm5102_component,
++ ARIZONA_CLK_SYSCLK,
++ ARIZONA_CLK_SRC_FLL1,
++ clk_freq,
++ SND_SOC_CLOCK_IN);
++ if (ret) {
++ dev_err(card->dev, "Failed to set SYSCLK: %d\n", ret);
++ goto out;
++ }
++
++ if ((priv->fll1_freq > 0) && (priv->fll1_freq != clk_freq)) {
++ dev_dbg(card->dev,
++ "hw_params: changing FLL1 from %d to %d\n",
++ priv->fll1_freq, clk_freq);
++
++ if (rpi_cirrus_clear_flls(card, wm5102_component)) {
++ dev_err(card->dev, "hw_params: failed to clear FLLs\n");
++ goto out;
++ }
++
++ if (rpi_cirrus_set_fll(card, wm5102_component, clk_freq)) {
++ dev_err(card->dev, "hw_params: failed to set FLL\n");
++ goto out;
++ }
++
++ priv->fll1_freq = clk_freq;
++ }
++
++ priv->card_rate = rate;
++ rpi_cirrus_dai_link2_params.rate_min = rate;
++ rpi_cirrus_dai_link2_params.rate_max = rate;
++
++ priv->params_set |= 1 << substream->stream;
++
++out:
++ mutex_unlock(&priv->lock);
++
++ return ret;
++}
++
++static int rpi_cirrus_hw_free(struct snd_pcm_substream *substream)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_card *card = rtd->card;
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ struct snd_soc_component *wm5102_component = rtd->codec_dai->component;
++ int ret;
++ unsigned int old_params_set = priv->params_set;
++
++ priv->params_set &= ~(1 << substream->stream);
++
++ /* disable sysclk if this was the last open stream */
++ if (priv->params_set == 0 && old_params_set) {
++ dev_dbg(card->dev,
++ "hw_free: Setting SYSCLK to Zero\n");
++
++ ret = snd_soc_component_set_sysclk(wm5102_component,
++ ARIZONA_CLK_SYSCLK,
++ ARIZONA_CLK_SRC_FLL1,
++ 0,
++ SND_SOC_CLOCK_IN);
++ if (ret)
++ dev_err(card->dev,
++ "hw_free: Failed to set SYSCLK to Zero: %d\n",
++ ret);
++ }
++ return 0;
++}
++
++static int rpi_cirrus_init_wm5102(struct snd_soc_pcm_runtime *rtd)
++{
++ struct snd_soc_component *component = rtd->codec_dai->component;
++ int ret;
++
++ /* no 32kHz input, derive it from sysclk if needed */
++ snd_soc_component_update_bits(component,
++ ARIZONA_CLOCK_32K_1, ARIZONA_CLK_32K_SRC_MASK, 2);
++
++ if (rpi_cirrus_clear_flls(rtd->card, component))
++ dev_warn(rtd->card->dev,
++ "init_wm5102: failed to clear FLLs\n");
++
++ ret = snd_soc_component_set_sysclk(component,
++ ARIZONA_CLK_SYSCLK, ARIZONA_CLK_SRC_FLL1,
++ 0, SND_SOC_CLOCK_IN);
++ if (ret) {
++ dev_err(rtd->card->dev,
++ "Failed to set SYSCLK to Zero: %d\n", ret);
++ return ret;
++ }
++
++ return 0;
++}
++
++static int rpi_cirrus_init_wm8804(struct snd_soc_pcm_runtime *rtd)
++{
++ struct snd_soc_dai *codec_dai = rtd->codec_dai;
++ struct snd_soc_component *component = codec_dai->component;
++ struct snd_soc_card *card = rtd->card;
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ unsigned int val, mask;
++ int i, ret;
++
++ for (i = 0; i < 4; i++) {
++ ret = snd_soc_component_read(component,
++ WM8804_SPDTX1 + i, &val);
++ if (ret)
++ return ret;
++ mask = (i == 3) ? 0x3f : 0xff;
++ priv->iec958_status[i] = val & mask;
++ }
++
++ /* Setup for 256fs */
++ ret = snd_soc_dai_set_clkdiv(codec_dai,
++ WM8804_MCLK_DIV, WM8804_MCLKDIV_256FS);
++ if (ret) {
++ dev_err(card->dev,
++ "init_wm8804: Failed to set MCLK_DIV to 256fs: %d\n",
++ ret);
++ return ret;
++ }
++
++ /* Output OSC on CLKOUT */
++ ret = snd_soc_dai_set_sysclk(codec_dai,
++ WM8804_CLKOUT_SRC_OSCCLK, WM8804_CLKOUT_HZ, 0);
++ if (ret)
++ dev_err(card->dev,
++ "init_wm8804: Failed to set CLKOUT as OSC Frequency: %d\n",
++ ret);
++
++ /* Init PLL with default samplerate */
++ ret = rpi_cirrus_set_wm8804_pll(card, codec_dai,
++ RPI_CIRRUS_DEFAULT_RATE);
++ if (ret)
++ dev_err(card->dev,
++ "init_wm8804: Failed to setup PLL for %dHz: %d\n",
++ RPI_CIRRUS_DEFAULT_RATE, ret);
++
++ return ret;
++}
++
++static struct snd_soc_ops rpi_cirrus_ops = {
++ .startup = rpi_cirrus_startup,
++ .hw_params = rpi_cirrus_hw_params,
++ .hw_free = rpi_cirrus_hw_free,
++};
++
++static struct snd_soc_dai_link rpi_cirrus_dai[] = {
++ [DAI_WM5102] = {
++ .name = "WM5102",
++ .stream_name = "WM5102 AiFi",
++ .codec_dai_name = "wm5102-aif1",
++ .codec_name = "wm5102-codec",
++ .dai_fmt = SND_SOC_DAIFMT_I2S
++ | SND_SOC_DAIFMT_NB_NF
++ | SND_SOC_DAIFMT_CBM_CFM,
++ .ops = &rpi_cirrus_ops,
++ .init = rpi_cirrus_init_wm5102,
++ },
++ [DAI_WM8804] = {
++ .name = "WM5102 SPDIF",
++ .stream_name = "SPDIF Tx/Rx",
++ .cpu_dai_name = "wm5102-aif2",
++ .codec_dai_name = "wm8804-spdif",
++ .codec_name = "wm8804.1-003b",
++ .dai_fmt = SND_SOC_DAIFMT_I2S
++ | SND_SOC_DAIFMT_NB_NF
++ | SND_SOC_DAIFMT_CBM_CFM,
++ .ignore_suspend = 1,
++ .params = &rpi_cirrus_dai_link2_params,
++ .init = rpi_cirrus_init_wm8804,
++ },
++};
++
++
++static int rpi_cirrus_late_probe(struct snd_soc_card *card)
++{
++ struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++ struct snd_soc_pcm_runtime *wm5102_runtime = get_wm5102_runtime(card);
++ struct snd_soc_pcm_runtime *wm8804_runtime = get_wm8804_runtime(card);
++ int ret;
++
++ dev_dbg(card->dev, "iec958_bits: %02x %02x %02x %02x\n",
++ priv->iec958_status[0],
++ priv->iec958_status[1],
++ priv->iec958_status[2],
++ priv->iec958_status[3]);
++
++ ret = snd_soc_dai_set_sysclk(
++ wm5102_runtime->codec_dai, ARIZONA_CLK_SYSCLK, 0, 0);
++ if (ret) {
++ dev_err(card->dev,
++ "Failed to set WM5102 codec dai clk domain: %d\n", ret);
++ return ret;
++ }
++
++ ret = snd_soc_dai_set_sysclk(
++ wm8804_runtime->cpu_dai, ARIZONA_CLK_SYSCLK, 0, 0);
++ if (ret)
++ dev_err(card->dev,
++ "Failed to set WM8804 codec dai clk domain: %d\n", ret);
++
++ return ret;
++}
++
++/* audio machine driver */
++static struct snd_soc_card rpi_cirrus_card = {
++ .name = "RPi-Cirrus",
++ .driver_name = "RPiCirrus",
++ .owner = THIS_MODULE,
++ .dai_link = rpi_cirrus_dai,
++ .num_links = ARRAY_SIZE(rpi_cirrus_dai),
++ .late_probe = rpi_cirrus_late_probe,
++ .controls = rpi_cirrus_controls,
++ .num_controls = ARRAY_SIZE(rpi_cirrus_controls),
++ .dapm_widgets = rpi_cirrus_dapm_widgets,
++ .num_dapm_widgets = ARRAY_SIZE(rpi_cirrus_dapm_widgets),
++ .dapm_routes = rpi_cirrus_dapm_routes,
++ .num_dapm_routes = ARRAY_SIZE(rpi_cirrus_dapm_routes),
++ .set_bias_level = rpi_cirrus_set_bias_level,
++ .set_bias_level_post = rpi_cirrus_set_bias_level_post,
++};
++
++static int rpi_cirrus_probe(struct platform_device *pdev)
++{
++ int ret = 0;
++ struct rpi_cirrus_priv *priv;
++ struct device_node *i2s_node;
++
++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
++ if (!priv)
++ return -ENOMEM;
++
++ priv->min_rate_idx = 1; /* min samplerate 32kHz */
++ priv->card_rate = RPI_CIRRUS_DEFAULT_RATE;
++
++ mutex_init(&priv->lock);
++
++ snd_soc_card_set_drvdata(&rpi_cirrus_card, priv);
++
++ if (!pdev->dev.of_node)
++ return -ENODEV;
++
++ i2s_node = of_parse_phandle(
++ pdev->dev.of_node, "i2s-controller", 0);
++ if (!i2s_node) {
++ dev_err(&pdev->dev, "i2s-controller missing in DT\n");
++ return -ENODEV;
++ }
++
++ rpi_cirrus_dai[DAI_WM5102].cpu_of_node = i2s_node;
++ rpi_cirrus_dai[DAI_WM5102].platform_of_node = i2s_node;
++
++ rpi_cirrus_card.dev = &pdev->dev;
++
++ ret = devm_snd_soc_register_card(&pdev->dev, &rpi_cirrus_card);
++ if (ret) {
++ if (ret == -EPROBE_DEFER)
++ dev_dbg(&pdev->dev,
++ "register card requested probe deferral\n");
++ else
++ dev_err(&pdev->dev,
++ "Failed to register card: %d\n", ret);
++ }
++
++ return ret;
++}
++
++static const struct of_device_id rpi_cirrus_of_match[] = {
++ { .compatible = "wlf,rpi-cirrus", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, rpi_cirrus_of_match);
++
++static struct platform_driver rpi_cirrus_driver = {
++ .driver = {
++ .name = "snd-rpi-cirrus",
++ .of_match_table = of_match_ptr(rpi_cirrus_of_match),
++ },
++ .probe = rpi_cirrus_probe,
++};
++
++module_platform_driver(rpi_cirrus_driver);
++
++MODULE_AUTHOR("Matthias Reichl <hias@horus.com>");
++MODULE_DESCRIPTION("ASoC driver for Cirrus Logic Audio Card");
++MODULE_LICENSE("GPL");
projects / openwrt / staging / dedeckeh.git / blobdiff