diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0079-ASoC-Add-driver-for-Cirrus-Logic-Audio-Card.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0079-ASoC-Add-driver-for-Cirrus-Logic-Audio-Card.patch | 1048 |
1 files changed, 1048 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0079-ASoC-Add-driver-for-Cirrus-Logic-Audio-Card.patch b/target/linux/brcm2708/patches-4.19/950-0079-ASoC-Add-driver-for-Cirrus-Logic-Audio-Card.patch new file mode 100644 index 0000000000..3acbca823e --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0079-ASoC-Add-driver-for-Cirrus-Logic-Audio-Card.patch @@ -0,0 +1,1048 @@ +From 9dea6c4e76e3bace9cbc62fd452de72ce0362034 Mon Sep 17 00:00:00 2001 +From: Matthias Reichl <hias@horus.com> +Date: Sun, 22 Jan 2017 12:49:37 +0100 +Subject: [PATCH 079/703] 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"); |