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-rw-r--r--sound/soc/codecs/cs35l45.c690
1 files changed, 690 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs35l45.c b/sound/soc/codecs/cs35l45.c
new file mode 100644
index 000000000000..d15b3b77c7eb
--- /dev/null
+++ b/sound/soc/codecs/cs35l45.c
@@ -0,0 +1,690 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+//
+// cs35l45.c - CS35L45 ALSA SoC audio driver
+//
+// Copyright 2019-2022 Cirrus Logic, Inc.
+//
+// Author: James Schulman <james.schulman@cirrus.com>
+
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "cs35l45.h"
+
+static int cs35l45_global_en_ev(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct cs35l45_private *cs35l45 = snd_soc_component_get_drvdata(component);
+
+ dev_dbg(cs35l45->dev, "%s event : %x\n", __func__, event);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ regmap_write(cs35l45->regmap, CS35L45_GLOBAL_ENABLES,
+ CS35L45_GLOBAL_EN_MASK);
+
+ usleep_range(CS35L45_POST_GLOBAL_EN_US, CS35L45_POST_GLOBAL_EN_US + 100);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ usleep_range(CS35L45_PRE_GLOBAL_DIS_US, CS35L45_PRE_GLOBAL_DIS_US + 100);
+
+ regmap_write(cs35l45->regmap, CS35L45_GLOBAL_ENABLES, 0);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const char * const cs35l45_asp_tx_txt[] = {
+ "Zero", "ASP_RX1", "ASP_RX2",
+ "VMON", "IMON", "ERR_VOL",
+ "VDD_BATTMON", "VDD_BSTMON",
+ "Interpolator", "IL_TARGET",
+};
+
+static const unsigned int cs35l45_asp_tx_val[] = {
+ CS35L45_PCM_SRC_ZERO, CS35L45_PCM_SRC_ASP_RX1, CS35L45_PCM_SRC_ASP_RX2,
+ CS35L45_PCM_SRC_VMON, CS35L45_PCM_SRC_IMON, CS35L45_PCM_SRC_ERR_VOL,
+ CS35L45_PCM_SRC_VDD_BATTMON, CS35L45_PCM_SRC_VDD_BSTMON,
+ CS35L45_PCM_SRC_INTERPOLATOR, CS35L45_PCM_SRC_IL_TARGET,
+};
+
+static const struct soc_enum cs35l45_asp_tx_enums[] = {
+ SOC_VALUE_ENUM_SINGLE(CS35L45_ASPTX1_INPUT, 0, CS35L45_PCM_SRC_MASK,
+ ARRAY_SIZE(cs35l45_asp_tx_txt), cs35l45_asp_tx_txt,
+ cs35l45_asp_tx_val),
+ SOC_VALUE_ENUM_SINGLE(CS35L45_ASPTX2_INPUT, 0, CS35L45_PCM_SRC_MASK,
+ ARRAY_SIZE(cs35l45_asp_tx_txt), cs35l45_asp_tx_txt,
+ cs35l45_asp_tx_val),
+ SOC_VALUE_ENUM_SINGLE(CS35L45_ASPTX3_INPUT, 0, CS35L45_PCM_SRC_MASK,
+ ARRAY_SIZE(cs35l45_asp_tx_txt), cs35l45_asp_tx_txt,
+ cs35l45_asp_tx_val),
+ SOC_VALUE_ENUM_SINGLE(CS35L45_ASPTX4_INPUT, 0, CS35L45_PCM_SRC_MASK,
+ ARRAY_SIZE(cs35l45_asp_tx_txt), cs35l45_asp_tx_txt,
+ cs35l45_asp_tx_val),
+ SOC_VALUE_ENUM_SINGLE(CS35L45_ASPTX5_INPUT, 0, CS35L45_PCM_SRC_MASK,
+ ARRAY_SIZE(cs35l45_asp_tx_txt), cs35l45_asp_tx_txt,
+ cs35l45_asp_tx_val),
+};
+
+static const char * const cs35l45_dac_txt[] = {
+ "Zero", "ASP_RX1", "ASP_RX2"
+};
+
+static const unsigned int cs35l45_dac_val[] = {
+ CS35L45_PCM_SRC_ZERO, CS35L45_PCM_SRC_ASP_RX1, CS35L45_PCM_SRC_ASP_RX2
+};
+
+static const struct soc_enum cs35l45_dacpcm_enums[] = {
+ SOC_VALUE_ENUM_SINGLE(CS35L45_DACPCM1_INPUT, 0, CS35L45_PCM_SRC_MASK,
+ ARRAY_SIZE(cs35l45_dac_txt), cs35l45_dac_txt,
+ cs35l45_dac_val),
+};
+
+static const struct snd_kcontrol_new cs35l45_asp_muxes[] = {
+ SOC_DAPM_ENUM("ASP_TX1 Source", cs35l45_asp_tx_enums[0]),
+ SOC_DAPM_ENUM("ASP_TX2 Source", cs35l45_asp_tx_enums[1]),
+ SOC_DAPM_ENUM("ASP_TX3 Source", cs35l45_asp_tx_enums[2]),
+ SOC_DAPM_ENUM("ASP_TX4 Source", cs35l45_asp_tx_enums[3]),
+ SOC_DAPM_ENUM("ASP_TX5 Source", cs35l45_asp_tx_enums[4]),
+};
+
+static const struct snd_kcontrol_new cs35l45_dac_muxes[] = {
+ SOC_DAPM_ENUM("DACPCM1 Source", cs35l45_dacpcm_enums[0]),
+};
+
+static const struct snd_soc_dapm_widget cs35l45_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("GLOBAL_EN", SND_SOC_NOPM, 0, 0,
+ cs35l45_global_en_ev,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_SUPPLY("ASP_EN", CS35L45_BLOCK_ENABLES2, CS35L45_ASP_EN_SHIFT, 0, NULL, 0),
+
+ SND_SOC_DAPM_SIGGEN("VMON_SRC"),
+ SND_SOC_DAPM_SIGGEN("IMON_SRC"),
+ SND_SOC_DAPM_SIGGEN("VDD_BATTMON_SRC"),
+ SND_SOC_DAPM_SIGGEN("VDD_BSTMON_SRC"),
+ SND_SOC_DAPM_SIGGEN("ERR_VOL"),
+ SND_SOC_DAPM_SIGGEN("AMP_INTP"),
+ SND_SOC_DAPM_SIGGEN("IL_TARGET"),
+ SND_SOC_DAPM_ADC("VMON", NULL, CS35L45_BLOCK_ENABLES, CS35L45_VMON_EN_SHIFT, 0),
+ SND_SOC_DAPM_ADC("IMON", NULL, CS35L45_BLOCK_ENABLES, CS35L45_IMON_EN_SHIFT, 0),
+ SND_SOC_DAPM_ADC("VDD_BATTMON", NULL, CS35L45_BLOCK_ENABLES,
+ CS35L45_VDD_BATTMON_EN_SHIFT, 0),
+ SND_SOC_DAPM_ADC("VDD_BSTMON", NULL, CS35L45_BLOCK_ENABLES,
+ CS35L45_VDD_BSTMON_EN_SHIFT, 0),
+
+ SND_SOC_DAPM_AIF_IN("ASP_RX1", NULL, 0, CS35L45_ASP_ENABLES1, CS35L45_ASP_RX1_EN_SHIFT, 0),
+ SND_SOC_DAPM_AIF_IN("ASP_RX2", NULL, 1, CS35L45_ASP_ENABLES1, CS35L45_ASP_RX2_EN_SHIFT, 0),
+
+ SND_SOC_DAPM_AIF_OUT("ASP_TX1", NULL, 0, CS35L45_ASP_ENABLES1, CS35L45_ASP_TX1_EN_SHIFT, 0),
+ SND_SOC_DAPM_AIF_OUT("ASP_TX2", NULL, 1, CS35L45_ASP_ENABLES1, CS35L45_ASP_TX2_EN_SHIFT, 0),
+ SND_SOC_DAPM_AIF_OUT("ASP_TX3", NULL, 2, CS35L45_ASP_ENABLES1, CS35L45_ASP_TX3_EN_SHIFT, 0),
+ SND_SOC_DAPM_AIF_OUT("ASP_TX4", NULL, 3, CS35L45_ASP_ENABLES1, CS35L45_ASP_TX4_EN_SHIFT, 0),
+ SND_SOC_DAPM_AIF_OUT("ASP_TX5", NULL, 3, CS35L45_ASP_ENABLES1, CS35L45_ASP_TX5_EN_SHIFT, 0),
+
+ SND_SOC_DAPM_MUX("ASP_TX1 Source", SND_SOC_NOPM, 0, 0, &cs35l45_asp_muxes[0]),
+ SND_SOC_DAPM_MUX("ASP_TX2 Source", SND_SOC_NOPM, 0, 0, &cs35l45_asp_muxes[1]),
+ SND_SOC_DAPM_MUX("ASP_TX3 Source", SND_SOC_NOPM, 0, 0, &cs35l45_asp_muxes[2]),
+ SND_SOC_DAPM_MUX("ASP_TX4 Source", SND_SOC_NOPM, 0, 0, &cs35l45_asp_muxes[3]),
+ SND_SOC_DAPM_MUX("ASP_TX5 Source", SND_SOC_NOPM, 0, 0, &cs35l45_asp_muxes[4]),
+
+ SND_SOC_DAPM_MUX("DACPCM1 Source", SND_SOC_NOPM, 0, 0, &cs35l45_dac_muxes[0]),
+
+ SND_SOC_DAPM_OUT_DRV("AMP", SND_SOC_NOPM, 0, 0, NULL, 0),
+
+ SND_SOC_DAPM_OUTPUT("SPK"),
+};
+
+#define CS35L45_ASP_MUX_ROUTE(name) \
+ { name" Source", "ASP_RX1", "ASP_RX1" }, \
+ { name" Source", "ASP_RX2", "ASP_RX2" }, \
+ { name" Source", "VMON", "VMON" }, \
+ { name" Source", "IMON", "IMON" }, \
+ { name" Source", "ERR_VOL", "ERR_VOL" }, \
+ { name" Source", "VDD_BATTMON", "VDD_BATTMON" }, \
+ { name" Source", "VDD_BSTMON", "VDD_BSTMON" }, \
+ { name" Source", "Interpolator", "AMP_INTP" }, \
+ { name" Source", "IL_TARGET", "IL_TARGET" }
+
+#define CS35L45_DAC_MUX_ROUTE(name) \
+ { name" Source", "ASP_RX1", "ASP_RX1" }, \
+ { name" Source", "ASP_RX2", "ASP_RX2" }
+
+static const struct snd_soc_dapm_route cs35l45_dapm_routes[] = {
+ /* Feedback */
+ { "VMON", NULL, "VMON_SRC" },
+ { "IMON", NULL, "IMON_SRC" },
+ { "VDD_BATTMON", NULL, "VDD_BATTMON_SRC" },
+ { "VDD_BSTMON", NULL, "VDD_BSTMON_SRC" },
+
+ { "Capture", NULL, "ASP_TX1"},
+ { "Capture", NULL, "ASP_TX2"},
+ { "Capture", NULL, "ASP_TX3"},
+ { "Capture", NULL, "ASP_TX4"},
+ { "Capture", NULL, "ASP_TX5"},
+ { "ASP_TX1", NULL, "ASP_TX1 Source"},
+ { "ASP_TX2", NULL, "ASP_TX2 Source"},
+ { "ASP_TX3", NULL, "ASP_TX3 Source"},
+ { "ASP_TX4", NULL, "ASP_TX4 Source"},
+ { "ASP_TX5", NULL, "ASP_TX5 Source"},
+
+ { "ASP_TX1", NULL, "ASP_EN" },
+ { "ASP_TX2", NULL, "ASP_EN" },
+ { "ASP_TX3", NULL, "ASP_EN" },
+ { "ASP_TX4", NULL, "ASP_EN" },
+ { "ASP_TX1", NULL, "GLOBAL_EN" },
+ { "ASP_TX2", NULL, "GLOBAL_EN" },
+ { "ASP_TX3", NULL, "GLOBAL_EN" },
+ { "ASP_TX4", NULL, "GLOBAL_EN" },
+ { "ASP_TX5", NULL, "GLOBAL_EN" },
+
+ CS35L45_ASP_MUX_ROUTE("ASP_TX1"),
+ CS35L45_ASP_MUX_ROUTE("ASP_TX2"),
+ CS35L45_ASP_MUX_ROUTE("ASP_TX3"),
+ CS35L45_ASP_MUX_ROUTE("ASP_TX4"),
+ CS35L45_ASP_MUX_ROUTE("ASP_TX5"),
+
+ /* Playback */
+ { "ASP_RX1", NULL, "Playback" },
+ { "ASP_RX2", NULL, "Playback" },
+ { "ASP_RX1", NULL, "ASP_EN" },
+ { "ASP_RX2", NULL, "ASP_EN" },
+
+ { "AMP", NULL, "DACPCM1 Source"},
+ { "AMP", NULL, "GLOBAL_EN"},
+
+ CS35L45_DAC_MUX_ROUTE("DACPCM1"),
+
+ { "SPK", NULL, "AMP"},
+};
+
+static const DECLARE_TLV_DB_SCALE(cs35l45_dig_pcm_vol_tlv, -10225, 25, true);
+
+static const struct snd_kcontrol_new cs35l45_controls[] = {
+ /* Ignore bit 0: it is beyond the resolution of TLV_DB_SCALE */
+ SOC_SINGLE_S_TLV("Digital PCM Volume",
+ CS35L45_AMP_PCM_CONTROL,
+ CS35L45_AMP_VOL_PCM_SHIFT + 1,
+ -409, 48,
+ (CS35L45_AMP_VOL_PCM_WIDTH - 1) - 1,
+ 0, cs35l45_dig_pcm_vol_tlv),
+};
+
+static int cs35l45_set_pll(struct cs35l45_private *cs35l45, unsigned int freq)
+{
+ unsigned int val;
+ int freq_id;
+
+ freq_id = cs35l45_get_clk_freq_id(freq);
+ if (freq_id < 0) {
+ dev_err(cs35l45->dev, "Invalid freq: %u\n", freq);
+ return -EINVAL;
+ }
+
+ regmap_read(cs35l45->regmap, CS35L45_REFCLK_INPUT, &val);
+ val = (val & CS35L45_PLL_REFCLK_FREQ_MASK) >> CS35L45_PLL_REFCLK_FREQ_SHIFT;
+ if (val == freq_id)
+ return 0;
+
+ regmap_set_bits(cs35l45->regmap, CS35L45_REFCLK_INPUT, CS35L45_PLL_OPEN_LOOP_MASK);
+ regmap_update_bits(cs35l45->regmap, CS35L45_REFCLK_INPUT,
+ CS35L45_PLL_REFCLK_FREQ_MASK,
+ freq_id << CS35L45_PLL_REFCLK_FREQ_SHIFT);
+ regmap_clear_bits(cs35l45->regmap, CS35L45_REFCLK_INPUT, CS35L45_PLL_REFCLK_EN_MASK);
+ regmap_clear_bits(cs35l45->regmap, CS35L45_REFCLK_INPUT, CS35L45_PLL_OPEN_LOOP_MASK);
+ regmap_set_bits(cs35l45->regmap, CS35L45_REFCLK_INPUT, CS35L45_PLL_REFCLK_EN_MASK);
+
+ return 0;
+}
+
+static int cs35l45_asp_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
+{
+ struct cs35l45_private *cs35l45 = snd_soc_component_get_drvdata(codec_dai->component);
+ unsigned int asp_fmt, fsync_inv, bclk_inv;
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ break;
+ default:
+ dev_err(cs35l45->dev, "Invalid DAI clocking\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ asp_fmt = CS35l45_ASP_FMT_DSP_A;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ asp_fmt = CS35L45_ASP_FMT_I2S;
+ break;
+ default:
+ dev_err(cs35l45->dev, "Invalid DAI format\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_IF:
+ fsync_inv = 1;
+ bclk_inv = 0;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ fsync_inv = 0;
+ bclk_inv = 1;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ fsync_inv = 1;
+ bclk_inv = 1;
+ break;
+ case SND_SOC_DAIFMT_NB_NF:
+ fsync_inv = 0;
+ bclk_inv = 0;
+ break;
+ default:
+ dev_warn(cs35l45->dev, "Invalid DAI clock polarity\n");
+ return -EINVAL;
+ }
+
+ regmap_update_bits(cs35l45->regmap, CS35L45_ASP_CONTROL2,
+ CS35L45_ASP_FMT_MASK |
+ CS35L45_ASP_FSYNC_INV_MASK |
+ CS35L45_ASP_BCLK_INV_MASK,
+ (asp_fmt << CS35L45_ASP_FMT_SHIFT) |
+ (fsync_inv << CS35L45_ASP_FSYNC_INV_SHIFT) |
+ (bclk_inv << CS35L45_ASP_BCLK_INV_SHIFT));
+
+ return 0;
+}
+
+static int cs35l45_asp_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct cs35l45_private *cs35l45 = snd_soc_component_get_drvdata(dai->component);
+ unsigned int asp_width, asp_wl, global_fs, slot_multiple, asp_fmt;
+ int bclk;
+
+ switch (params_rate(params)) {
+ case 44100:
+ global_fs = CS35L45_44P100_KHZ;
+ break;
+ case 48000:
+ global_fs = CS35L45_48P0_KHZ;
+ break;
+ case 88200:
+ global_fs = CS35L45_88P200_KHZ;
+ break;
+ case 96000:
+ global_fs = CS35L45_96P0_KHZ;
+ break;
+ default:
+ dev_warn(cs35l45->dev, "Unsupported sample rate (%d)\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ regmap_update_bits(cs35l45->regmap, CS35L45_GLOBAL_SAMPLE_RATE,
+ CS35L45_GLOBAL_FS_MASK,
+ global_fs << CS35L45_GLOBAL_FS_SHIFT);
+
+ asp_wl = params_width(params);
+
+ if (cs35l45->slot_width)
+ asp_width = cs35l45->slot_width;
+ else
+ asp_width = params_width(params);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_update_bits(cs35l45->regmap, CS35L45_ASP_CONTROL2,
+ CS35L45_ASP_WIDTH_RX_MASK,
+ asp_width << CS35L45_ASP_WIDTH_RX_SHIFT);
+
+ regmap_update_bits(cs35l45->regmap, CS35L45_ASP_DATA_CONTROL5,
+ CS35L45_ASP_WL_MASK,
+ asp_wl << CS35L45_ASP_WL_SHIFT);
+ } else {
+ regmap_update_bits(cs35l45->regmap, CS35L45_ASP_CONTROL2,
+ CS35L45_ASP_WIDTH_TX_MASK,
+ asp_width << CS35L45_ASP_WIDTH_TX_SHIFT);
+
+ regmap_update_bits(cs35l45->regmap, CS35L45_ASP_DATA_CONTROL1,
+ CS35L45_ASP_WL_MASK,
+ asp_wl << CS35L45_ASP_WL_SHIFT);
+ }
+
+ if (cs35l45->sysclk_set)
+ return 0;
+
+ /* I2S always has an even number of channels */
+ regmap_read(cs35l45->regmap, CS35L45_ASP_CONTROL2, &asp_fmt);
+ asp_fmt = (asp_fmt & CS35L45_ASP_FMT_MASK) >> CS35L45_ASP_FMT_SHIFT;
+ if (asp_fmt == CS35L45_ASP_FMT_I2S)
+ slot_multiple = 2;
+ else
+ slot_multiple = 1;
+
+ bclk = snd_soc_tdm_params_to_bclk(params, asp_width,
+ cs35l45->slot_count, slot_multiple);
+
+ return cs35l45_set_pll(cs35l45, bclk);
+}
+
+static int cs35l45_asp_set_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask, unsigned int rx_mask,
+ int slots, int slot_width)
+{
+ struct cs35l45_private *cs35l45 = snd_soc_component_get_drvdata(dai->component);
+
+ if (slot_width && ((slot_width < 16) || (slot_width > 128)))
+ return -EINVAL;
+
+ cs35l45->slot_width = slot_width;
+ cs35l45->slot_count = slots;
+
+ return 0;
+}
+
+static int cs35l45_asp_set_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct cs35l45_private *cs35l45 = snd_soc_component_get_drvdata(dai->component);
+ int ret;
+
+ if (clk_id != 0) {
+ dev_err(cs35l45->dev, "Invalid clk_id %d\n", clk_id);
+ return -EINVAL;
+ }
+
+ cs35l45->sysclk_set = false;
+ if (freq == 0)
+ return 0;
+
+ ret = cs35l45_set_pll(cs35l45, freq);
+ if (ret < 0)
+ return -EINVAL;
+
+ cs35l45->sysclk_set = true;
+
+ return 0;
+}
+
+static int cs35l45_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
+{
+ struct cs35l45_private *cs35l45 = snd_soc_component_get_drvdata(dai->component);
+ unsigned int global_fs, val, hpf_tune;
+
+ if (mute)
+ return 0;
+
+ regmap_read(cs35l45->regmap, CS35L45_GLOBAL_SAMPLE_RATE, &global_fs);
+ global_fs = (global_fs & CS35L45_GLOBAL_FS_MASK) >> CS35L45_GLOBAL_FS_SHIFT;
+ switch (global_fs) {
+ case CS35L45_44P100_KHZ:
+ hpf_tune = CS35L45_HPF_44P1;
+ break;
+ case CS35L45_88P200_KHZ:
+ hpf_tune = CS35L45_HPF_88P2;
+ break;
+ default:
+ hpf_tune = CS35l45_HPF_DEFAULT;
+ break;
+ }
+
+ regmap_read(cs35l45->regmap, CS35L45_AMP_PCM_HPF_TST, &val);
+ if (val != hpf_tune) {
+ struct reg_sequence hpf_override_seq[] = {
+ { 0x00000040, 0x00000055 },
+ { 0x00000040, 0x000000AA },
+ { 0x00000044, 0x00000055 },
+ { 0x00000044, 0x000000AA },
+ { CS35L45_AMP_PCM_HPF_TST, hpf_tune },
+ { 0x00000040, 0x00000000 },
+ { 0x00000044, 0x00000000 },
+ };
+ regmap_multi_reg_write(cs35l45->regmap, hpf_override_seq,
+ ARRAY_SIZE(hpf_override_seq));
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops cs35l45_asp_dai_ops = {
+ .set_fmt = cs35l45_asp_set_fmt,
+ .hw_params = cs35l45_asp_hw_params,
+ .set_tdm_slot = cs35l45_asp_set_tdm_slot,
+ .set_sysclk = cs35l45_asp_set_sysclk,
+ .mute_stream = cs35l45_mute_stream,
+};
+
+static struct snd_soc_dai_driver cs35l45_dai[] = {
+ {
+ .name = "cs35l45",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = CS35L45_RATES,
+ .formats = CS35L45_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 5,
+ .rates = CS35L45_RATES,
+ .formats = CS35L45_FORMATS,
+ },
+ .symmetric_rate = true,
+ .symmetric_sample_bits = true,
+ .ops = &cs35l45_asp_dai_ops,
+ },
+};
+
+static const struct snd_soc_component_driver cs35l45_component = {
+ .dapm_widgets = cs35l45_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(cs35l45_dapm_widgets),
+
+ .dapm_routes = cs35l45_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(cs35l45_dapm_routes),
+
+ .controls = cs35l45_controls,
+ .num_controls = ARRAY_SIZE(cs35l45_controls),
+
+ .name = "cs35l45",
+
+ .endianness = 1,
+};
+
+static int __maybe_unused cs35l45_runtime_suspend(struct device *dev)
+{
+ struct cs35l45_private *cs35l45 = dev_get_drvdata(dev);
+
+ regcache_cache_only(cs35l45->regmap, true);
+
+ dev_dbg(cs35l45->dev, "Runtime suspended\n");
+
+ return 0;
+}
+
+static int __maybe_unused cs35l45_runtime_resume(struct device *dev)
+{
+ struct cs35l45_private *cs35l45 = dev_get_drvdata(dev);
+ int ret;
+
+ dev_dbg(cs35l45->dev, "Runtime resume\n");
+
+ regcache_cache_only(cs35l45->regmap, false);
+ ret = regcache_sync(cs35l45->regmap);
+ if (ret != 0)
+ dev_warn(cs35l45->dev, "regcache_sync failed: %d\n", ret);
+
+ /* Clear global error status */
+ regmap_clear_bits(cs35l45->regmap, CS35L45_ERROR_RELEASE, CS35L45_GLOBAL_ERR_RLS_MASK);
+ regmap_set_bits(cs35l45->regmap, CS35L45_ERROR_RELEASE, CS35L45_GLOBAL_ERR_RLS_MASK);
+ regmap_clear_bits(cs35l45->regmap, CS35L45_ERROR_RELEASE, CS35L45_GLOBAL_ERR_RLS_MASK);
+ return ret;
+}
+
+static int cs35l45_apply_property_config(struct cs35l45_private *cs35l45)
+{
+ unsigned int val;
+
+ if (device_property_read_u32(cs35l45->dev,
+ "cirrus,asp-sdout-hiz-ctrl", &val) == 0) {
+ regmap_update_bits(cs35l45->regmap, CS35L45_ASP_CONTROL3,
+ CS35L45_ASP_DOUT_HIZ_CTRL_MASK,
+ val << CS35L45_ASP_DOUT_HIZ_CTRL_SHIFT);
+ }
+
+ return 0;
+}
+
+static int cs35l45_initialize(struct cs35l45_private *cs35l45)
+{
+ struct device *dev = cs35l45->dev;
+ unsigned int dev_id[5];
+ unsigned int sts;
+ int ret;
+
+ ret = regmap_read_poll_timeout(cs35l45->regmap, CS35L45_IRQ1_EINT_4, sts,
+ (sts & CS35L45_OTP_BOOT_DONE_STS_MASK),
+ 1000, 5000);
+ if (ret < 0) {
+ dev_err(cs35l45->dev, "Timeout waiting for OTP boot\n");
+ return ret;
+ }
+
+ ret = regmap_bulk_read(cs35l45->regmap, CS35L45_DEVID, dev_id, ARRAY_SIZE(dev_id));
+ if (ret) {
+ dev_err(cs35l45->dev, "Get Device ID failed: %d\n", ret);
+ return ret;
+ }
+
+ switch (dev_id[0]) {
+ case 0x35A450:
+ break;
+ default:
+ dev_err(cs35l45->dev, "Bad DEVID 0x%x\n", dev_id[0]);
+ return -ENODEV;
+ }
+
+ dev_info(cs35l45->dev, "Cirrus Logic CS35L45: REVID %02X OTPID %02X\n",
+ dev_id[1], dev_id[4]);
+
+ regmap_write(cs35l45->regmap, CS35L45_IRQ1_EINT_4,
+ CS35L45_OTP_BOOT_DONE_STS_MASK | CS35L45_OTP_BUSY_MASK);
+
+ ret = cs35l45_apply_patch(cs35l45);
+ if (ret < 0) {
+ dev_err(dev, "Failed to apply init patch %d\n", ret);
+ return ret;
+ }
+
+ ret = cs35l45_apply_property_config(cs35l45);
+ if (ret < 0)
+ return ret;
+
+ pm_runtime_set_autosuspend_delay(cs35l45->dev, 3000);
+ pm_runtime_use_autosuspend(cs35l45->dev);
+ pm_runtime_set_active(cs35l45->dev);
+ pm_runtime_enable(cs35l45->dev);
+
+ return 0;
+}
+
+int cs35l45_probe(struct cs35l45_private *cs35l45)
+{
+ struct device *dev = cs35l45->dev;
+ int ret;
+
+ cs35l45->vdd_batt = devm_regulator_get(dev, "vdd-batt");
+ if (IS_ERR(cs35l45->vdd_batt))
+ return dev_err_probe(dev, PTR_ERR(cs35l45->vdd_batt),
+ "Failed to request vdd-batt\n");
+
+ cs35l45->vdd_a = devm_regulator_get(dev, "vdd-a");
+ if (IS_ERR(cs35l45->vdd_a))
+ return dev_err_probe(dev, PTR_ERR(cs35l45->vdd_a),
+ "Failed to request vdd-a\n");
+
+ /* VDD_BATT must always be enabled before other supplies */
+ ret = regulator_enable(cs35l45->vdd_batt);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "Failed to enable vdd-batt\n");
+
+ ret = regulator_enable(cs35l45->vdd_a);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "Failed to enable vdd-a\n");
+
+ /* If reset is shared only one instance can claim it */
+ cs35l45->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(cs35l45->reset_gpio)) {
+ ret = PTR_ERR(cs35l45->reset_gpio);
+ cs35l45->reset_gpio = NULL;
+ if (ret == -EBUSY) {
+ dev_dbg(dev, "Reset line busy, assuming shared reset\n");
+ } else {
+ dev_err_probe(dev, ret, "Failed to get reset GPIO\n");
+ goto err;
+ }
+ }
+
+ if (cs35l45->reset_gpio) {
+ usleep_range(CS35L45_RESET_HOLD_US, CS35L45_RESET_HOLD_US + 100);
+ gpiod_set_value_cansleep(cs35l45->reset_gpio, 1);
+ }
+
+ usleep_range(CS35L45_RESET_US, CS35L45_RESET_US + 100);
+
+ ret = cs35l45_initialize(cs35l45);
+ if (ret < 0)
+ goto err_reset;
+
+ ret = devm_snd_soc_register_component(dev, &cs35l45_component,
+ cs35l45_dai,
+ ARRAY_SIZE(cs35l45_dai));
+ if (ret < 0)
+ goto err_reset;
+
+ return 0;
+
+err_reset:
+ gpiod_set_value_cansleep(cs35l45->reset_gpio, 0);
+err:
+ regulator_disable(cs35l45->vdd_a);
+ regulator_disable(cs35l45->vdd_batt);
+
+ return ret;
+}
+EXPORT_SYMBOL_NS_GPL(cs35l45_probe, SND_SOC_CS35L45);
+
+void cs35l45_remove(struct cs35l45_private *cs35l45)
+{
+ pm_runtime_disable(cs35l45->dev);
+
+ gpiod_set_value_cansleep(cs35l45->reset_gpio, 0);
+ regulator_disable(cs35l45->vdd_a);
+ /* VDD_BATT must be the last to power-off */
+ regulator_disable(cs35l45->vdd_batt);
+}
+EXPORT_SYMBOL_NS_GPL(cs35l45_remove, SND_SOC_CS35L45);
+
+const struct dev_pm_ops cs35l45_pm_ops = {
+ SET_RUNTIME_PM_OPS(cs35l45_runtime_suspend, cs35l45_runtime_resume, NULL)
+};
+EXPORT_SYMBOL_NS_GPL(cs35l45_pm_ops, SND_SOC_CS35L45);
+
+MODULE_DESCRIPTION("ASoC CS35L45 driver");
+MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
+MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_IMPORT_NS(SND_SOC_CS35L45_TABLES);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.