--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// Ingenic JZ4760 CODEC driver
+//
+// Copyright (C) 2021, Christophe Branchereau <cbranchereau@gmail.com>
+// Copyright (C) 2021, Paul Cercueil <paul@crapouillou.net>
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/time64.h>
+
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+
+#define ICDC_RGADW_OFFSET 0x00
+#define ICDC_RGDATA_OFFSET 0x04
+
+/* ICDC internal register access control register(RGADW) */
+#define ICDC_RGADW_RGWR BIT(16)
+#define ICDC_RGADW_RGADDR_MASK GENMASK(14, 8)
+#define ICDC_RGADW_RGDIN_MASK GENMASK(7, 0)
+
+/* ICDC internal register data output register (RGDATA)*/
+#define ICDC_RGDATA_IRQ BIT(8)
+#define ICDC_RGDATA_RGDOUT_MASK GENMASK(7, 0)
+
+/* Internal register space, accessed through regmap */
+enum {
+ JZ4760_CODEC_REG_SR,
+ JZ4760_CODEC_REG_AICR,
+ JZ4760_CODEC_REG_CR1,
+ JZ4760_CODEC_REG_CR2,
+ JZ4760_CODEC_REG_CR3,
+ JZ4760_CODEC_REG_CR4,
+ JZ4760_CODEC_REG_CCR1,
+ JZ4760_CODEC_REG_CCR2,
+ JZ4760_CODEC_REG_PMR1,
+ JZ4760_CODEC_REG_PMR2,
+ JZ4760_CODEC_REG_ICR,
+ JZ4760_CODEC_REG_IFR,
+ JZ4760_CODEC_REG_GCR1,
+ JZ4760_CODEC_REG_GCR2,
+ JZ4760_CODEC_REG_GCR3,
+ JZ4760_CODEC_REG_GCR4,
+ JZ4760_CODEC_REG_GCR5,
+ JZ4760_CODEC_REG_GCR6,
+ JZ4760_CODEC_REG_GCR7,
+ JZ4760_CODEC_REG_GCR8,
+ JZ4760_CODEC_REG_GCR9,
+ JZ4760_CODEC_REG_AGC1,
+ JZ4760_CODEC_REG_AGC2,
+ JZ4760_CODEC_REG_AGC3,
+ JZ4760_CODEC_REG_AGC4,
+ JZ4760_CODEC_REG_AGC5,
+ JZ4760_CODEC_REG_MIX1,
+ JZ4760_CODEC_REG_MIX2,
+};
+
+#define REG_AICR_DAC_ADWL_MASK GENMASK(7, 6)
+#define REG_AICR_DAC_SERIAL BIT(3)
+#define REG_AICR_DAC_I2S BIT(1)
+
+#define REG_AICR_ADC_ADWL_MASK GENMASK(5, 4)
+
+#define REG_AICR_ADC_SERIAL BIT(2)
+#define REG_AICR_ADC_I2S BIT(0)
+
+#define REG_CR1_HP_LOAD BIT(7)
+#define REG_CR1_HP_MUTE BIT(5)
+#define REG_CR1_LO_MUTE_OFFSET 4
+#define REG_CR1_BTL_MUTE_OFFSET 3
+#define REG_CR1_OUTSEL_OFFSET 0
+#define REG_CR1_OUTSEL_MASK GENMASK(1, REG_CR1_OUTSEL_OFFSET)
+
+#define REG_CR2_DAC_MONO BIT(7)
+#define REG_CR2_DAC_MUTE BIT(5)
+#define REG_CR2_DAC_NOMAD BIT(1)
+#define REG_CR2_DAC_RIGHT_ONLY BIT(0)
+
+#define REG_CR3_ADC_INSEL_OFFSET 2
+#define REG_CR3_ADC_INSEL_MASK GENMASK(3, REG_CR3_ADC_INSEL_OFFSET)
+#define REG_CR3_MICSTEREO_OFFSET 1
+#define REG_CR3_MICDIFF_OFFSET 0
+
+#define REG_CR4_ADC_HPF_OFFSET 7
+#define REG_CR4_ADC_RIGHT_ONLY BIT(0)
+
+#define REG_CCR1_CRYSTAL_MASK GENMASK(3, 0)
+
+#define REG_CCR2_DAC_FREQ_MASK GENMASK(7, 4)
+#define REG_CCR2_ADC_FREQ_MASK GENMASK(3, 0)
+
+#define REG_PMR1_SB BIT(7)
+#define REG_PMR1_SB_SLEEP BIT(6)
+#define REG_PMR1_SB_AIP_OFFSET 5
+#define REG_PMR1_SB_LINE_OFFSET 4
+#define REG_PMR1_SB_MIC1_OFFSET 3
+#define REG_PMR1_SB_MIC2_OFFSET 2
+#define REG_PMR1_SB_BYPASS_OFFSET 1
+#define REG_PMR1_SB_MICBIAS_OFFSET 0
+
+#define REG_PMR2_SB_ADC_OFFSET 4
+#define REG_PMR2_SB_HP_OFFSET 3
+#define REG_PMR2_SB_BTL_OFFSET 2
+#define REG_PMR2_SB_LOUT_OFFSET 1
+#define REG_PMR2_SB_DAC_OFFSET 0
+
+#define REG_ICR_INT_FORM_MASK GENMASK(7, 6)
+#define REG_ICR_ALL_MASK GENMASK(5, 0)
+#define REG_ICR_JACK_MASK BIT(5)
+#define REG_ICR_SCMC_MASK BIT(4)
+#define REG_ICR_RUP_MASK BIT(3)
+#define REG_ICR_RDO_MASK BIT(2)
+#define REG_ICR_GUP_MASK BIT(1)
+#define REG_ICR_GDO_MASK BIT(0)
+
+#define REG_IFR_ALL_MASK GENMASK(5, 0)
+#define REG_IFR_JACK BIT(6)
+#define REG_IFR_JACK_EVENT BIT(5)
+#define REG_IFR_SCMC BIT(4)
+#define REG_IFR_RUP BIT(3)
+#define REG_IFR_RDO BIT(2)
+#define REG_IFR_GUP BIT(1)
+#define REG_IFR_GDO BIT(0)
+
+#define REG_GCR_GAIN_OFFSET 0
+#define REG_GCR_GAIN_MAX 0x1f
+
+#define REG_GCR_RL BIT(7)
+
+#define REG_GCR_GIM1_MASK GENMASK(5, 3)
+#define REG_GCR_GIM2_MASK GENMASK(2, 0)
+#define REG_GCR_GIM_GAIN_MAX 7
+
+#define REG_AGC1_EN BIT(7)
+#define REG_AGC1_TARGET_MASK GENMASK(5, 2)
+
+#define REG_AGC2_NG_THR_MASK GENMASK(6, 4)
+#define REG_AGC2_HOLD_MASK GENMASK(3, 0)
+
+#define REG_AGC3_ATK_MASK GENMASK(7, 4)
+#define REG_AGC3_DCY_MASK GENMASK(3, 0)
+
+#define REG_AGC4_AGC_MAX_MASK GENMASK(4, 0)
+
+#define REG_AGC5_AGC_MIN_MASK GENMASK(4, 0)
+
+#define REG_MIX1_MIX_REC_MASK GENMASK(7, 6)
+#define REG_MIX1_GIMIX_MASK GENMASK(4, 0)
+
+#define REG_MIX2_DAC_MIX_MASK GENMASK(7, 6)
+#define REG_MIX2_GOMIX_MASK GENMASK(4, 0)
+
+/* codec private data */
+struct jz_codec {
+ struct device *dev;
+ struct regmap *regmap;
+ void __iomem *base;
+ struct clk *clk;
+};
+
+static int jz4760_codec_set_bias_level(struct snd_soc_component *codec,
+ enum snd_soc_bias_level level)
+{
+ struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
+ struct regmap *regmap = jz_codec->regmap;
+
+ switch (level) {
+ case SND_SOC_BIAS_PREPARE:
+ /* Reset all interrupt flags. */
+ regmap_write(regmap, JZ4760_CODEC_REG_IFR, REG_IFR_ALL_MASK);
+
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB);
+ msleep(250);
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB_SLEEP);
+ msleep(400);
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ regmap_set_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB_SLEEP);
+ regmap_set_bits(regmap, JZ4760_CODEC_REG_PMR1, REG_PMR1_SB);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int jz4760_codec_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *codec = dai->component;
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(codec);
+ int ret;
+
+ /*
+ * SYSCLK output from the codec to the AIC is required to keep the
+ * DMA transfer going during playback when all audible outputs have
+ * been disabled.
+ */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ ret = snd_soc_dapm_force_enable_pin(dapm, "SYSCLK");
+ return 0;
+}
+
+static void jz4760_codec_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *codec = dai->component;
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(codec);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_dapm_disable_pin(dapm, "SYSCLK");
+}
+
+
+static int jz4760_codec_pcm_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *codec = dai->component;
+ int ret = 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_component_force_bias_level(codec, SND_SOC_BIAS_ON);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ /* do nothing */
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int jz4760_codec_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *codec = dai->component;
+ struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
+ unsigned int gain_bit = mute ? REG_IFR_GDO : REG_IFR_GUP;
+ unsigned int val, reg;
+ int change, err;
+
+ change = snd_soc_component_update_bits(codec, JZ4760_CODEC_REG_CR2,
+ REG_CR2_DAC_MUTE,
+ mute ? REG_CR2_DAC_MUTE : 0);
+ if (change == 1) {
+ regmap_read(jz_codec->regmap, JZ4760_CODEC_REG_PMR2, &val);
+
+ if (val & BIT(REG_PMR2_SB_DAC_OFFSET))
+ return 1;
+
+ err = regmap_read_poll_timeout(jz_codec->regmap,
+ JZ4760_CODEC_REG_IFR,
+ val, val & gain_bit,
+ 1000, 1 * USEC_PER_SEC);
+ if (err) {
+ dev_err(jz_codec->dev,
+ "Timeout while setting digital mute: %d", err);
+ return err;
+ }
+
+ /* clear GUP/GDO flag */
+ regmap_write(jz_codec->regmap, JZ4760_CODEC_REG_IFR, gain_bit);
+ }
+
+ regmap_read(jz_codec->regmap, JZ4760_CODEC_REG_CR2, ®);
+
+ return 0;
+}
+
+/* unit: 0.01dB */
+static const DECLARE_TLV_DB_MINMAX_MUTE(dac_tlv, -3100, 100);
+static const DECLARE_TLV_DB_SCALE(adc_tlv, 0, 100, 0);
+static const DECLARE_TLV_DB_MINMAX(out_tlv, -2500, 100);
+static const DECLARE_TLV_DB_SCALE(linein_tlv, -2500, 100, 0);
+
+/* Unconditional controls. */
+static const struct snd_kcontrol_new jz4760_codec_snd_controls[] = {
+ /* record gain control */
+ SOC_DOUBLE_R_TLV("PCM Capture Volume",
+ JZ4760_CODEC_REG_GCR9, JZ4760_CODEC_REG_GCR8,
+ REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 0, adc_tlv),
+
+ SOC_DOUBLE_R_TLV("Line In Bypass Playback Volume",
+ JZ4760_CODEC_REG_GCR4, JZ4760_CODEC_REG_GCR3,
+ REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, linein_tlv),
+
+ SOC_SINGLE("High-Pass Filter Capture Switch",
+ JZ4760_CODEC_REG_CR4,
+ REG_CR4_ADC_HPF_OFFSET, 1, 0),
+};
+
+static const struct snd_kcontrol_new jz4760_codec_pcm_playback_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Volume",
+ .info = snd_soc_info_volsw,
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
+ | SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .tlv.p = dac_tlv,
+ .get = snd_soc_dapm_get_volsw,
+ .put = snd_soc_dapm_put_volsw,
+ .private_value = SOC_DOUBLE_R_VALUE(JZ4760_CODEC_REG_GCR6,
+ JZ4760_CODEC_REG_GCR5,
+ REG_GCR_GAIN_OFFSET,
+ REG_GCR_GAIN_MAX, 1),
+ },
+};
+
+static const struct snd_kcontrol_new jz4760_codec_hp_playback_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Volume",
+ .info = snd_soc_info_volsw,
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
+ | SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .tlv.p = out_tlv,
+ .get = snd_soc_dapm_get_volsw,
+ .put = snd_soc_dapm_put_volsw,
+ .private_value = SOC_DOUBLE_R_VALUE(JZ4760_CODEC_REG_GCR2,
+ JZ4760_CODEC_REG_GCR1,
+ REG_GCR_GAIN_OFFSET,
+ REG_GCR_GAIN_MAX, 1),
+ },
+};
+
+static int hpout_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
+ struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
+ unsigned int val;
+ int err;
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ /* unmute HP */
+ regmap_clear_bits(jz_codec->regmap, JZ4760_CODEC_REG_CR1,
+ REG_CR1_HP_MUTE);
+ break;
+
+ case SND_SOC_DAPM_POST_PMU:
+ /* wait for ramp-up complete (RUP) */
+ err = regmap_read_poll_timeout(jz_codec->regmap,
+ JZ4760_CODEC_REG_IFR,
+ val, val & REG_IFR_RUP,
+ 1000, 1 * USEC_PER_SEC);
+ if (err) {
+ dev_err(jz_codec->dev, "RUP timeout: %d", err);
+ return err;
+ }
+
+ /* clear RUP flag */
+ regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_IFR,
+ REG_IFR_RUP);
+
+ break;
+
+ case SND_SOC_DAPM_POST_PMD:
+ /* mute HP */
+ regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_CR1,
+ REG_CR1_HP_MUTE);
+
+ err = regmap_read_poll_timeout(jz_codec->regmap,
+ JZ4760_CODEC_REG_IFR,
+ val, val & REG_IFR_RDO,
+ 1000, 1 * USEC_PER_SEC);
+ if (err) {
+ dev_err(jz_codec->dev, "RDO timeout: %d", err);
+ return err;
+ }
+
+ /* clear RDO flag */
+ regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_IFR,
+ REG_IFR_RDO);
+
+ break;
+ }
+
+ return 0;
+}
+
+static const char * const jz4760_codec_hp_texts[] = {
+ "PCM", "Line In", "Mic 1", "Mic 2"
+};
+
+static const unsigned int jz4760_codec_hp_values[] = { 3, 2, 0, 1 };
+
+static SOC_VALUE_ENUM_SINGLE_DECL(jz4760_codec_hp_enum,
+ JZ4760_CODEC_REG_CR1,
+ REG_CR1_OUTSEL_OFFSET,
+ REG_CR1_OUTSEL_MASK >> REG_CR1_OUTSEL_OFFSET,
+ jz4760_codec_hp_texts,
+ jz4760_codec_hp_values);
+static const struct snd_kcontrol_new jz4760_codec_hp_source =
+ SOC_DAPM_ENUM("Route", jz4760_codec_hp_enum);
+
+static const char * const jz4760_codec_cap_texts[] = {
+ "Line In", "Mic 1", "Mic 2"
+};
+
+static const unsigned int jz4760_codec_cap_values[] = { 2, 0, 1 };
+
+static SOC_VALUE_ENUM_SINGLE_DECL(jz4760_codec_cap_enum,
+ JZ4760_CODEC_REG_CR3,
+ REG_CR3_ADC_INSEL_OFFSET,
+ REG_CR3_ADC_INSEL_MASK >> REG_CR3_ADC_INSEL_OFFSET,
+ jz4760_codec_cap_texts,
+ jz4760_codec_cap_values);
+static const struct snd_kcontrol_new jz4760_codec_cap_source =
+ SOC_DAPM_ENUM("Route", jz4760_codec_cap_enum);
+
+static const struct snd_kcontrol_new jz4760_codec_mic_controls[] = {
+ SOC_DAPM_SINGLE("Stereo Capture Switch", JZ4760_CODEC_REG_CR3,
+ REG_CR3_MICSTEREO_OFFSET, 1, 0),
+};
+
+static const struct snd_kcontrol_new jz4760_codec_line_out_switch =
+ SOC_DAPM_SINGLE("Switch", JZ4760_CODEC_REG_CR1,
+ REG_CR1_LO_MUTE_OFFSET, 0, 0);
+static const struct snd_kcontrol_new jz4760_codec_btl_out_switch =
+ SOC_DAPM_SINGLE("Switch", JZ4760_CODEC_REG_CR1,
+ REG_CR1_BTL_MUTE_OFFSET, 0, 0);
+
+static const struct snd_soc_dapm_widget jz4760_codec_dapm_widgets[] = {
+ SND_SOC_DAPM_PGA_E("HP Out", JZ4760_CODEC_REG_PMR2,
+ REG_PMR2_SB_HP_OFFSET, 1, NULL, 0, hpout_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
+ SND_SOC_DAPM_POST_PMD),
+
+ SND_SOC_DAPM_SWITCH("Line Out", JZ4760_CODEC_REG_PMR2,
+ REG_PMR2_SB_LOUT_OFFSET, 1,
+ &jz4760_codec_line_out_switch),
+
+ SND_SOC_DAPM_SWITCH("BTL Out", JZ4760_CODEC_REG_PMR2,
+ REG_PMR2_SB_BTL_OFFSET, 1,
+ &jz4760_codec_btl_out_switch),
+
+ SND_SOC_DAPM_PGA("Line In", JZ4760_CODEC_REG_PMR1,
+ REG_PMR1_SB_LINE_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_MUX("Headphones Source", SND_SOC_NOPM, 0, 0,
+ &jz4760_codec_hp_source),
+
+ SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
+ &jz4760_codec_cap_source),
+
+ SND_SOC_DAPM_PGA("Mic 1", JZ4760_CODEC_REG_PMR1,
+ REG_PMR1_SB_MIC1_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_PGA("Mic 2", JZ4760_CODEC_REG_PMR1,
+ REG_PMR1_SB_MIC2_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_PGA("Mic Diff", JZ4760_CODEC_REG_CR3,
+ REG_CR3_MICDIFF_OFFSET, 0, NULL, 0),
+
+ SND_SOC_DAPM_MIXER("Mic", SND_SOC_NOPM, 0, 0,
+ jz4760_codec_mic_controls,
+ ARRAY_SIZE(jz4760_codec_mic_controls)),
+
+ SND_SOC_DAPM_PGA("Line In Bypass", JZ4760_CODEC_REG_PMR1,
+ REG_PMR1_SB_BYPASS_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_ADC("ADC", "Capture", JZ4760_CODEC_REG_PMR2,
+ REG_PMR2_SB_ADC_OFFSET, 1),
+
+ SND_SOC_DAPM_DAC("DAC", "Playback", JZ4760_CODEC_REG_PMR2,
+ REG_PMR2_SB_DAC_OFFSET, 1),
+
+ SND_SOC_DAPM_MIXER("PCM Playback", SND_SOC_NOPM, 0, 0,
+ jz4760_codec_pcm_playback_controls,
+ ARRAY_SIZE(jz4760_codec_pcm_playback_controls)),
+
+ SND_SOC_DAPM_MIXER("Headphones Playback", SND_SOC_NOPM, 0, 0,
+ jz4760_codec_hp_playback_controls,
+ ARRAY_SIZE(jz4760_codec_hp_playback_controls)),
+
+ SND_SOC_DAPM_SUPPLY("MICBIAS", JZ4760_CODEC_REG_PMR1,
+ REG_PMR1_SB_MICBIAS_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_INPUT("MIC1P"),
+ SND_SOC_DAPM_INPUT("MIC1N"),
+ SND_SOC_DAPM_INPUT("MIC2P"),
+ SND_SOC_DAPM_INPUT("MIC2N"),
+
+ SND_SOC_DAPM_INPUT("LLINEIN"),
+ SND_SOC_DAPM_INPUT("RLINEIN"),
+
+ SND_SOC_DAPM_OUTPUT("LHPOUT"),
+ SND_SOC_DAPM_OUTPUT("RHPOUT"),
+
+ SND_SOC_DAPM_OUTPUT("LOUT"),
+ SND_SOC_DAPM_OUTPUT("ROUT"),
+
+ SND_SOC_DAPM_OUTPUT("BTLP"),
+ SND_SOC_DAPM_OUTPUT("BTLN"),
+
+ SND_SOC_DAPM_OUTPUT("SYSCLK"),
+};
+
+/* Unconditional routes. */
+static const struct snd_soc_dapm_route jz4760_codec_dapm_routes[] = {
+ { "Mic 1", NULL, "MIC1P" },
+ { "Mic Diff", NULL, "MIC1N" },
+ { "Mic 1", NULL, "Mic Diff" },
+ { "Mic 2", NULL, "MIC2P" },
+ { "Mic Diff", NULL, "MIC2N" },
+ { "Mic 2", NULL, "Mic Diff" },
+
+ { "Line In", NULL, "LLINEIN" },
+ { "Line In", NULL, "RLINEIN" },
+
+ { "Mic", "Stereo Capture Switch", "Mic 1" },
+ { "Mic", "Stereo Capture Switch", "Mic 2" },
+ { "Headphones Source", "Mic 1", "Mic" },
+ { "Headphones Source", "Mic 2", "Mic" },
+ { "Capture Source", "Mic 1", "Mic" },
+ { "Capture Source", "Mic 2", "Mic" },
+
+ { "Capture Source", "Line In", "Line In" },
+ { "Capture Source", "Mic 1", "Mic 1" },
+ { "Capture Source", "Mic 2", "Mic 2" },
+ { "ADC", NULL, "Capture Source" },
+
+ { "Line In Bypass", NULL, "Line In" },
+
+ { "Headphones Source", "Mic 1", "Mic 1" },
+ { "Headphones Source", "Mic 2", "Mic 2" },
+ { "Headphones Source", "Line In", "Line In Bypass" },
+ { "Headphones Source", "PCM", "Headphones Playback" },
+ { "HP Out", NULL, "Headphones Source" },
+
+ { "LHPOUT", NULL, "HP Out" },
+ { "RHPOUT", NULL, "HP Out" },
+ { "Line Out", "Switch", "HP Out" },
+
+ { "LOUT", NULL, "Line Out" },
+ { "ROUT", NULL, "Line Out" },
+ { "BTL Out", "Switch", "Line Out" },
+
+ { "BTLP", NULL, "BTL Out"},
+ { "BTLN", NULL, "BTL Out"},
+
+ { "PCM Playback", "Volume", "DAC" },
+ { "Headphones Playback", "Volume", "PCM Playback" },
+
+ { "SYSCLK", NULL, "DAC" },
+};
+
+static void jz4760_codec_codec_init_regs(struct snd_soc_component *codec)
+{
+ struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
+ struct regmap *regmap = jz_codec->regmap;
+
+ /* Collect updates for later sending. */
+ regcache_cache_only(regmap, true);
+
+ /* default Amp output to PCM */
+ regmap_set_bits(regmap, JZ4760_CODEC_REG_CR1, REG_CR1_OUTSEL_MASK);
+
+ /* Disable stereo mic */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_CR3,
+ BIT(REG_CR3_MICSTEREO_OFFSET));
+
+ /* Set mic 1 as default source for ADC */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_CR3,
+ REG_CR3_ADC_INSEL_MASK);
+
+ /* ADC/DAC: serial + i2s */
+ regmap_set_bits(regmap, JZ4760_CODEC_REG_AICR,
+ REG_AICR_ADC_SERIAL | REG_AICR_ADC_I2S |
+ REG_AICR_DAC_SERIAL | REG_AICR_DAC_I2S);
+
+ /* The generated IRQ is a high level */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_ICR, REG_ICR_INT_FORM_MASK);
+ regmap_update_bits(regmap, JZ4760_CODEC_REG_ICR, REG_ICR_ALL_MASK,
+ REG_ICR_JACK_MASK | REG_ICR_RUP_MASK |
+ REG_ICR_RDO_MASK | REG_ICR_GUP_MASK |
+ REG_ICR_GDO_MASK);
+
+ /* 12M oscillator */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_CCR1, REG_CCR1_CRYSTAL_MASK);
+
+ /* 0: 16ohm/220uF, 1: 10kohm/1uF */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_CR1, REG_CR1_HP_LOAD);
+
+ /* default to NOMAD */
+ regmap_set_bits(jz_codec->regmap, JZ4760_CODEC_REG_CR2,
+ REG_CR2_DAC_NOMAD);
+
+ /* disable automatic gain */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_AGC1, REG_AGC1_EN);
+
+ /* Independent L/R DAC gain control */
+ regmap_clear_bits(regmap, JZ4760_CODEC_REG_GCR5,
+ REG_GCR_RL);
+
+ /* Send collected updates. */
+ regcache_cache_only(regmap, false);
+ regcache_sync(regmap);
+}
+
+static int jz4760_codec_codec_probe(struct snd_soc_component *codec)
+{
+ struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
+
+ clk_prepare_enable(jz_codec->clk);
+
+ jz4760_codec_codec_init_regs(codec);
+
+ return 0;
+}
+
+static void jz4760_codec_codec_remove(struct snd_soc_component *codec)
+{
+ struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
+
+ clk_disable_unprepare(jz_codec->clk);
+}
+
+static const struct snd_soc_component_driver jz4760_codec_soc_codec_dev = {
+ .probe = jz4760_codec_codec_probe,
+ .remove = jz4760_codec_codec_remove,
+ .set_bias_level = jz4760_codec_set_bias_level,
+ .controls = jz4760_codec_snd_controls,
+ .num_controls = ARRAY_SIZE(jz4760_codec_snd_controls),
+ .dapm_widgets = jz4760_codec_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(jz4760_codec_dapm_widgets),
+ .dapm_routes = jz4760_codec_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(jz4760_codec_dapm_routes),
+ .suspend_bias_off = 1,
+ .use_pmdown_time = 1,
+};
+
+static const unsigned int jz4760_codec_sample_rates[] = {
+ 96000, 48000, 44100, 32000,
+ 24000, 22050, 16000, 12000,
+ 11025, 9600, 8000,
+};
+
+static int jz4760_codec_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct jz_codec *codec = snd_soc_component_get_drvdata(dai->component);
+ unsigned int rate, bit_width;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ bit_width = 0;
+ break;
+ case SNDRV_PCM_FORMAT_S18_3LE:
+ bit_width = 1;
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ bit_width = 2;
+ break;
+ case SNDRV_PCM_FORMAT_S24_3LE:
+ bit_width = 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (rate = 0; rate < ARRAY_SIZE(jz4760_codec_sample_rates); rate++) {
+ if (jz4760_codec_sample_rates[rate] == params_rate(params))
+ break;
+ }
+
+ if (rate == ARRAY_SIZE(jz4760_codec_sample_rates))
+ return -EINVAL;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_AICR,
+ REG_AICR_DAC_ADWL_MASK,
+ FIELD_PREP(REG_AICR_DAC_ADWL_MASK, bit_width));
+ regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_CCR2,
+ REG_CCR2_DAC_FREQ_MASK,
+ FIELD_PREP(REG_CCR2_DAC_FREQ_MASK, rate));
+ } else {
+ regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_AICR,
+ REG_AICR_ADC_ADWL_MASK,
+ FIELD_PREP(REG_AICR_ADC_ADWL_MASK, bit_width));
+ regmap_update_bits(codec->regmap, JZ4760_CODEC_REG_CCR2,
+ REG_CCR2_ADC_FREQ_MASK,
+ FIELD_PREP(REG_CCR2_ADC_FREQ_MASK, rate));
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops jz4760_codec_dai_ops = {
+ .startup = jz4760_codec_startup,
+ .shutdown = jz4760_codec_shutdown,
+ .hw_params = jz4760_codec_hw_params,
+ .trigger = jz4760_codec_pcm_trigger,
+ .mute_stream = jz4760_codec_mute_stream,
+ .no_capture_mute = 1,
+};
+
+#define JZ_CODEC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S18_3LE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE)
+
+static struct snd_soc_dai_driver jz4760_codec_dai = {
+ .name = "jz4760-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = JZ_CODEC_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = JZ_CODEC_FORMATS,
+ },
+ .ops = &jz4760_codec_dai_ops,
+};
+
+static bool jz4760_codec_volatile(struct device *dev, unsigned int reg)
+{
+ return reg == JZ4760_CODEC_REG_SR || reg == JZ4760_CODEC_REG_IFR;
+}
+
+static bool jz4760_codec_writeable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case JZ4760_CODEC_REG_SR:
+ return false;
+ default:
+ return true;
+ }
+}
+
+static int jz4760_codec_io_wait(struct jz_codec *codec)
+{
+ u32 reg;
+
+ return readl_poll_timeout(codec->base + ICDC_RGADW_OFFSET, reg,
+ !(reg & ICDC_RGADW_RGWR),
+ 1000, 1 * USEC_PER_SEC);
+}
+
+static int jz4760_codec_reg_read(void *context, unsigned int reg,
+ unsigned int *val)
+{
+ struct jz_codec *codec = context;
+ unsigned int i;
+ u32 tmp;
+ int ret;
+
+ ret = jz4760_codec_io_wait(codec);
+ if (ret)
+ return ret;
+
+ tmp = readl(codec->base + ICDC_RGADW_OFFSET);
+ tmp &= ~ICDC_RGADW_RGADDR_MASK;
+ tmp |= FIELD_PREP(ICDC_RGADW_RGADDR_MASK, reg);
+ writel(tmp, codec->base + ICDC_RGADW_OFFSET);
+
+ /* wait 6+ cycles */
+ for (i = 0; i < 6; i++)
+ *val = readl(codec->base + ICDC_RGDATA_OFFSET) &
+ ICDC_RGDATA_RGDOUT_MASK;
+
+ return 0;
+}
+
+static int jz4760_codec_reg_write(void *context, unsigned int reg,
+ unsigned int val)
+{
+ struct jz_codec *codec = context;
+ int ret;
+
+ ret = jz4760_codec_io_wait(codec);
+ if (ret)
+ return ret;
+
+ writel(ICDC_RGADW_RGWR | FIELD_PREP(ICDC_RGADW_RGADDR_MASK, reg) | val,
+ codec->base + ICDC_RGADW_OFFSET);
+
+ ret = jz4760_codec_io_wait(codec);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const u8 jz4760_codec_reg_defaults[] = {
+ 0x00, 0xFC, 0x1B, 0x20, 0x00, 0x80, 0x00, 0x00,
+ 0xFF, 0x1F, 0x3F, 0x00, 0x06, 0x06, 0x06, 0x06,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x07, 0x44,
+ 0x1F, 0x00, 0x00, 0x00
+};
+
+static struct regmap_config jz4760_codec_regmap_config = {
+ .reg_bits = 7,
+ .val_bits = 8,
+
+ .max_register = JZ4760_CODEC_REG_MIX2,
+ .volatile_reg = jz4760_codec_volatile,
+ .writeable_reg = jz4760_codec_writeable,
+
+ .reg_read = jz4760_codec_reg_read,
+ .reg_write = jz4760_codec_reg_write,
+
+ .reg_defaults_raw = jz4760_codec_reg_defaults,
+ .num_reg_defaults_raw = ARRAY_SIZE(jz4760_codec_reg_defaults),
+ .cache_type = REGCACHE_FLAT,
+};
+
+static int jz4760_codec_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct jz_codec *codec;
+ int ret;
+
+ codec = devm_kzalloc(dev, sizeof(*codec), GFP_KERNEL);
+ if (!codec)
+ return -ENOMEM;
+
+ codec->dev = dev;
+
+ codec->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(codec->base)) {
+ ret = PTR_ERR(codec->base);
+ dev_err(dev, "Failed to ioremap mmio memory: %d\n", ret);
+ return ret;
+ }
+
+ codec->regmap = devm_regmap_init(dev, NULL, codec,
+ &jz4760_codec_regmap_config);
+ if (IS_ERR(codec->regmap))
+ return PTR_ERR(codec->regmap);
+
+ codec->clk = devm_clk_get(dev, "aic");
+ if (IS_ERR(codec->clk))
+ return PTR_ERR(codec->clk);
+
+ platform_set_drvdata(pdev, codec);
+
+ ret = devm_snd_soc_register_component(dev, &jz4760_codec_soc_codec_dev,
+ &jz4760_codec_dai, 1);
+ if (ret) {
+ dev_err(dev, "Failed to register codec: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id jz4760_codec_of_matches[] = {
+ { .compatible = "ingenic,jz4760-codec", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, jz4760_codec_of_matches);
+
+static struct platform_driver jz4760_codec_driver = {
+ .probe = jz4760_codec_probe,
+ .driver = {
+ .name = "jz4760-codec",
+ .of_match_table = jz4760_codec_of_matches,
+ },
+};
+module_platform_driver(jz4760_codec_driver);
+
+MODULE_DESCRIPTION("JZ4760 SoC internal codec driver");
+MODULE_AUTHOR("Christophe Branchereau <cbranchereau@gmail.com>");
+MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
+MODULE_LICENSE("GPL v2");
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