[alsa-devel] [PATCH 6/6] ASoC: codecs: Add jz4725b-codec driver
Paul Cercueil
paul at crapouillou.net
Tue Feb 5 04:11:08 CET 2019
Add jz4725b-codec driver to support the internal CODEC found in the
JZ4725B SoC from Ingenic.
Signed-off-by: Paul Cercueil <paul at crapouillou.net>
---
sound/soc/codecs/Kconfig | 12 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/jz4725b.c | 599 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 613 insertions(+)
create mode 100644 sound/soc/codecs/jz4725b.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 2a6d3f86ca96..7b27b70d0a92 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -88,6 +88,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_INNO_RK3036
select SND_SOC_ISABELLE if I2C
select SND_SOC_JZ4740_CODEC
+ select SND_SOC_JZ4725B_CODEC
select SND_SOC_LM4857 if I2C
select SND_SOC_LM49453 if I2C
select SND_SOC_MAX98088 if I2C
@@ -570,6 +571,17 @@ config SND_SOC_JZ4740_CODEC
This driver can also be built as a module. If so, the module
will be called snd-soc-jz4740-codec.
+config SND_SOC_JZ4725B_CODEC
+ depends on MIPS || COMPILE_TEST
+ select REGMAP
+ tristate "Ingenic JZ4725B internal CODEC"
+ help
+ Enable support for the internal CODEC found in the JZ4725B SoC
+ from Ingenic.
+
+ This driver can also be built as a module. If so, the module
+ will be called snd-soc-jz4725b-codec.
+
config SND_SOC_L3
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 66f55d185620..5ea9eaff1817 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -84,6 +84,7 @@ snd-soc-ics43432-objs := ics43432.o
snd-soc-inno-rk3036-objs := inno_rk3036.o
snd-soc-isabelle-objs := isabelle.o
snd-soc-jz4740-codec-objs := jz4740.o
+snd-soc-jz4725b-codec-objs := jz4725b.o
snd-soc-l3-objs := l3.o
snd-soc-lm4857-objs := lm4857.o
snd-soc-lm49453-objs := lm49453.o
@@ -350,6 +351,7 @@ obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o
obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o
obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o
obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o
+obj-$(CONFIG_SND_SOC_JZ4725B_CODEC) += snd-soc-jz4725b-codec.o
obj-$(CONFIG_SND_SOC_L3) += snd-soc-l3.o
obj-$(CONFIG_SND_SOC_LM4857) += snd-soc-lm4857.o
obj-$(CONFIG_SND_SOC_LM49453) += snd-soc-lm49453.o
diff --git a/sound/soc/codecs/jz4725b.c b/sound/soc/codecs/jz4725b.c
new file mode 100644
index 000000000000..e3dba92f30bd
--- /dev/null
+++ b/sound/soc/codecs/jz4725b.c
@@ -0,0 +1,599 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * JZ4725B CODEC driver
+ *
+ * Copyright (C) 2019, Paul Cercueil <paul at crapouillou.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/regmap.h>
+#include <linux/clk.h>
+
+#include <linux/delay.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.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_OFFSET 8
+#define ICDC_RGADW_RGADDR_MASK GENMASK(14, ICDC_RGADW_RGADDR_OFFSET)
+
+#define ICDC_RGADW_RGDIN_OFFSET 0
+#define ICDC_RGADW_RGDIN_MASK GENMASK(7, ICDC_RGADW_RGDIN_OFFSET)
+
+/* ICDC internal register data output register (RGDATA)*/
+#define ICDC_RGDATA_IRQ BIT(8)
+
+#define ICDC_RGDATA_RGDOUT_OFFSET 0
+#define ICDC_RGDATA_RGDOUT_MASK GENMASK(7, ICDC_RGDATA_RGDOUT_OFFSET)
+
+/* JZ internal register space */
+enum {
+ JZ4725B_CODEC_REG_AICR,
+ JZ4725B_CODEC_REG_CR1,
+ JZ4725B_CODEC_REG_CR2,
+ JZ4725B_CODEC_REG_CCR1,
+ JZ4725B_CODEC_REG_CCR2,
+ JZ4725B_CODEC_REG_PMR1,
+ JZ4725B_CODEC_REG_PMR2,
+ JZ4725B_CODEC_REG_CRR,
+ JZ4725B_CODEC_REG_ICR,
+ JZ4725B_CODEC_REG_IFR,
+ JZ4725B_CODEC_REG_CGR1,
+ JZ4725B_CODEC_REG_CGR2,
+ JZ4725B_CODEC_REG_CGR3,
+ JZ4725B_CODEC_REG_CGR4,
+ JZ4725B_CODEC_REG_CGR5,
+ JZ4725B_CODEC_REG_CGR6,
+ JZ4725B_CODEC_REG_CGR7,
+ JZ4725B_CODEC_REG_CGR8,
+ JZ4725B_CODEC_REG_CGR9,
+ JZ4725B_CODEC_REG_CGR10,
+ JZ4725B_CODEC_REG_TR1,
+ JZ4725B_CODEC_REG_TR2,
+ JZ4725B_CODEC_REG_CR3,
+ JZ4725B_CODEC_REG_AGC1,
+ JZ4725B_CODEC_REG_AGC2,
+ JZ4725B_CODEC_REG_AGC3,
+ JZ4725B_CODEC_REG_AGC4,
+ JZ4725B_CODEC_REG_AGC5,
+};
+
+#define REG_AICR_CONFIG1_OFFSET 0
+#define REG_AICR_CONFIG1_MASK (0xf << REG_AICR_CONFIG1_OFFSET)
+
+#define REG_CR1_SB_MICBIAS_OFFSET 7
+#define REG_CR1_MONO_OFFSET 6
+#define REG_CR1_DAC_MUTE_OFFSET 5
+#define REG_CR1_HP_DIS_OFFSET 4
+#define REG_CR1_DACSEL_OFFSET 3
+#define REG_CR1_BYPASS_OFFSET 2
+
+#define REG_CR2_DAC_DEEMP_OFFSET 7
+#define REG_CR2_DAC_ADWL_OFFSET 5
+#define REG_CR2_DAC_ADWL_MASK (0x3 << REG_CR2_DAC_ADWL_OFFSET)
+#define REG_CR2_ADC_ADWL_OFFSET 3
+#define REG_CR2_ADC_ADWL_MASK (0x3 << REG_CR2_ADC_ADWL_OFFSET)
+#define REG_CR2_ADC_HPF_OFFSET 2
+
+#define REG_CR3_SB_MIC1_OFFSET 7
+#define REG_CR3_SB_MIC2_OFFSET 6
+#define REG_CR3_SIDETONE1_OFFSET 5
+#define REG_CR3_SIDETONE2_OFFSET 4
+#define REG_CR3_MICDIFF_OFFSET 3
+#define REG_CR3_MICSTEREO_OFFSET 2
+#define REG_CR3_INSEL_OFFSET 0
+#define REG_CR3_INSEL_MASK (0x3 << REG_CR3_INSEL_OFFSET)
+
+#define REG_CCR1_CONFIG4_OFFSET 0
+#define REG_CCR1_CONFIG4_MASK (0xf << REG_CCR1_CONFIG4_OFFSET)
+
+#define REG_CCR2_DFREQ_OFFSET 4
+#define REG_CCR2_DFREQ_MASK (0xf << REG_CCR2_DFREQ_OFFSET)
+#define REG_CCR2_AFREQ_OFFSET 0
+#define REG_CCR2_AFREQ_MASK (0xf << REG_CCR2_AFREQ_OFFSET)
+
+#define REG_PMR1_SB_DAC_OFFSET 7
+#define REG_PMR1_SB_OUT_OFFSET 6
+#define REG_PMR1_SB_MIX_OFFSET 5
+#define REG_PMR1_SB_ADC_OFFSET 4
+#define REG_PMR1_SB_LIN_OFFSET 3
+#define REG_PMR1_SB_IND_OFFSET 0
+
+#define REG_PMR2_LRGI_OFFSET 7
+#define REG_PMR2_RLGI_OFFSET 6
+#define REG_PMR2_LRGOD_OFFSET 5
+#define REG_PMR2_RLGOD_OFFSET 4
+#define REG_PMR2_GIM_OFFSET 3
+#define REG_PMR2_SB_MC_OFFSET 2
+#define REG_PMR2_SB_OFFSET 1
+#define REG_PMR2_SB_SLEEP_OFFSET 0
+
+#define REG_IFR_RAMP_UP_DONE_OFFSET 3
+#define REG_IFR_RAMP_DOWN_DONE_OFFSET 2
+
+#define REG_CGR1_GODL_OFFSET 4
+#define REG_CGR1_GODL_MASK (0xf << REG_CGR1_GODL_OFFSET)
+#define REG_CGR1_GODR_OFFSET 0
+#define REG_CGR1_GODR_MASK (0xf << REG_CGR1_GODR_OFFSET)
+
+#define REG_CGR2_GO1R_OFFSET 0
+#define REG_CGR2_GO1R_MASK (0x1f << REG_CGR2_GO1R_OFFSET)
+
+#define REG_CGR3_GO1L_OFFSET 0
+#define REG_CGR3_GO1L_MASK (0x1f << REG_CGR3_GO1L_OFFSET)
+
+struct jz_icdc {
+ struct regmap *regmap;
+ void __iomem *base;
+ struct clk *clk;
+};
+
+static const SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(jz4725b_dac_tlv, -2250, 0);
+static const SNDRV_CTL_TLVD_DECLARE_DB_LINEAR(jz4725b_line_tlv, -1500, 600);
+
+static const struct snd_kcontrol_new jz4725b_codec_controls[] = {
+ SOC_DOUBLE_TLV("Master Playback Volume",
+ JZ4725B_CODEC_REG_CGR1,
+ REG_CGR1_GODL_OFFSET,
+ REG_CGR1_GODR_OFFSET,
+ 0xf, 1, jz4725b_dac_tlv),
+ SOC_DOUBLE_R_TLV("Master Capture Volume",
+ JZ4725B_CODEC_REG_CGR3,
+ JZ4725B_CODEC_REG_CGR2,
+ REG_CGR2_GO1R_OFFSET,
+ 0x1f, 1, jz4725b_line_tlv),
+
+ SOC_SINGLE("Master Playback Switch", JZ4725B_CODEC_REG_CR1,
+ REG_CR1_DAC_MUTE_OFFSET, 1, 1),
+
+ SOC_SINGLE("Deemphatize Filter Playback Switch",
+ JZ4725B_CODEC_REG_CR2,
+ REG_CR2_DAC_DEEMP_OFFSET, 1, 0),
+
+ SOC_SINGLE("High-Pass Filter Capture Switch",
+ JZ4725B_CODEC_REG_CR2,
+ REG_CR2_ADC_HPF_OFFSET, 1, 0),
+};
+
+static const char * const jz4725b_codec_adc_src_texts[] = {
+ "Mic 1", "Mic 2", "Line In", "Mixer",
+};
+static const unsigned int jz4725b_codec_adc_src_values[] = { 0, 1, 2, 3, };
+static const SOC_VALUE_ENUM_SINGLE_DECL(jz4725b_codec_adc_src_enum,
+ JZ4725B_CODEC_REG_CR3,
+ REG_CR3_INSEL_OFFSET,
+ REG_CR3_INSEL_MASK,
+ jz4725b_codec_adc_src_texts,
+ jz4725b_codec_adc_src_values);
+static const struct snd_kcontrol_new jz4725b_codec_adc_src_ctrl =
+ SOC_DAPM_ENUM("Route", jz4725b_codec_adc_src_enum);
+
+static const struct snd_kcontrol_new jz4725b_codec_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Line In Bypass", JZ4725B_CODEC_REG_CR1,
+ REG_CR1_BYPASS_OFFSET, 1, 0),
+};
+
+static int jz4725b_out_stage_enable(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_icdc *icdc = snd_soc_component_get_drvdata(codec);
+ struct regmap *map = icdc->regmap;
+ unsigned int val;
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ return regmap_update_bits(map, JZ4725B_CODEC_REG_IFR,
+ BIT(REG_IFR_RAMP_UP_DONE_OFFSET), 0);
+ case SND_SOC_DAPM_POST_PMU:
+ return regmap_read_poll_timeout(map, JZ4725B_CODEC_REG_IFR,
+ val, val & BIT(REG_IFR_RAMP_UP_DONE_OFFSET),
+ 100000, 500000);
+ case SND_SOC_DAPM_PRE_PMD:
+ return regmap_update_bits(map, JZ4725B_CODEC_REG_IFR,
+ BIT(REG_IFR_RAMP_DOWN_DONE_OFFSET), 0);
+ case SND_SOC_DAPM_POST_PMD:
+ return regmap_read_poll_timeout(map, JZ4725B_CODEC_REG_IFR,
+ val, val & BIT(REG_IFR_RAMP_DOWN_DONE_OFFSET),
+ 100000, 500000);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct snd_soc_dapm_widget jz4725b_codec_dapm_widgets[] = {
+ /* DAC */
+ SND_SOC_DAPM_DAC("DAC", "Playback",
+ JZ4725B_CODEC_REG_PMR1, REG_PMR1_SB_DAC_OFFSET, 1),
+
+ /* ADC */
+ SND_SOC_DAPM_ADC("ADC", "Capture",
+ JZ4725B_CODEC_REG_PMR1, REG_PMR1_SB_ADC_OFFSET, 1),
+
+ SND_SOC_DAPM_MUX("ADC Source", SND_SOC_NOPM, 0, 0,
+ &jz4725b_codec_adc_src_ctrl),
+
+ /* Mixer */
+ SND_SOC_DAPM_MIXER("Mixer", JZ4725B_CODEC_REG_PMR1,
+ REG_PMR1_SB_MIX_OFFSET, 1,
+ jz4725b_codec_mixer_controls,
+ ARRAY_SIZE(jz4725b_codec_mixer_controls)),
+ SND_SOC_DAPM_MIXER("DAC to Mixer", JZ4725B_CODEC_REG_CR1,
+ REG_CR1_DACSEL_OFFSET, 0, NULL, 0),
+
+ SND_SOC_DAPM_MIXER("Line In", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_MIXER("HP Out", JZ4725B_CODEC_REG_CR1,
+ REG_CR1_HP_DIS_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_MIXER("Mic 1", JZ4725B_CODEC_REG_CR3,
+ REG_CR3_SB_MIC1_OFFSET, 1, NULL, 0),
+ SND_SOC_DAPM_MIXER("Mic 2", JZ4725B_CODEC_REG_CR3,
+ REG_CR3_SB_MIC2_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_MIXER_E("Out Stage", JZ4725B_CODEC_REG_PMR1,
+ REG_PMR1_SB_OUT_OFFSET, 1, NULL, 0,
+ jz4725b_out_stage_enable,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
+ SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_MIXER("Mixer to ADC", JZ4725B_CODEC_REG_PMR1,
+ REG_PMR1_SB_IND_OFFSET, 1, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("Mic Bias", JZ4725B_CODEC_REG_CR1,
+ REG_CR1_SB_MICBIAS_OFFSET, 1, NULL, 0),
+
+ /* Pins */
+ 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"),
+};
+
+static const struct snd_soc_dapm_route jz4725b_codec_dapm_routes[] = {
+ {"Mic 1", NULL, "MIC1P"},
+ {"Mic 1", NULL, "MIC1N"},
+ {"Mic 2", NULL, "MIC2P"},
+ {"Mic 2", NULL, "MIC2N"},
+
+ {"Line In", NULL, "LLINEIN"},
+ {"Line In", NULL, "RLINEIN"},
+
+ {"Mixer", "Line In Bypass", "Line In"},
+ {"DAC to Mixer", NULL, "DAC"},
+ {"Mixer", NULL, "DAC to Mixer"},
+
+ {"Mixer to ADC", NULL, "Mixer"},
+ {"ADC Source", "Mixer", "Mixer to ADC"},
+ {"ADC Source", "Line In", "Line In"},
+ {"ADC Source", "Mic 1", "Mic 1"},
+ {"ADC Source", "Mic 2", "Mic 2"},
+ {"ADC", NULL, "ADC Source"},
+
+ {"Out Stage", NULL, "Mixer"},
+ {"HP Out", NULL, "Out Stage"},
+ {"LHPOUT", NULL, "HP Out"},
+ {"RHPOUT", NULL, "HP Out"},
+};
+
+static int jz4725b_codec_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct jz_icdc *icdc = snd_soc_component_get_drvdata(component);
+ struct regmap *map = icdc->regmap;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
+ BIT(REG_PMR2_SB_SLEEP_OFFSET), 0);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ /* Enable sound hardware */
+ regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
+ BIT(REG_PMR2_SB_OFFSET), 0);
+ msleep(224);
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
+ BIT(REG_PMR2_SB_SLEEP_OFFSET),
+ BIT(REG_PMR2_SB_SLEEP_OFFSET));
+ break;
+ case SND_SOC_BIAS_OFF:
+ regmap_update_bits(map, JZ4725B_CODEC_REG_PMR2,
+ BIT(REG_PMR2_SB_OFFSET),
+ BIT(REG_PMR2_SB_OFFSET));
+ break;
+ }
+
+ return 0;
+}
+
+static int jz4725b_codec_dev_probe(struct snd_soc_component *component)
+{
+ struct jz_icdc *icdc = snd_soc_component_get_drvdata(component);
+ struct regmap *map = icdc->regmap;
+
+ clk_prepare_enable(icdc->clk);
+
+ /* Write CONFIGn (n=1 to 8) bits.
+ * The value 0x0f is specified in the datasheet as a requirement.
+ */
+ regmap_write(map, JZ4725B_CODEC_REG_AICR,
+ 0xf << REG_AICR_CONFIG1_OFFSET);
+ regmap_write(map, JZ4725B_CODEC_REG_CCR1,
+ 0x0 << REG_CCR1_CONFIG4_OFFSET);
+
+ return 0;
+}
+
+static void jz4725b_codec_dev_remove(struct snd_soc_component *component)
+{
+ struct jz_icdc *icdc = snd_soc_component_get_drvdata(component);
+
+ clk_disable_unprepare(icdc->clk);
+}
+
+static const struct snd_soc_component_driver jz4725b_codec = {
+ .probe = jz4725b_codec_dev_probe,
+ .remove = jz4725b_codec_dev_remove,
+ .set_bias_level = jz4725b_codec_set_bias_level,
+ .controls = jz4725b_codec_controls,
+ .num_controls = ARRAY_SIZE(jz4725b_codec_controls),
+ .dapm_widgets = jz4725b_codec_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(jz4725b_codec_dapm_widgets),
+ .dapm_routes = jz4725b_codec_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(jz4725b_codec_dapm_routes),
+ .suspend_bias_off = 1,
+ .use_pmdown_time = 1,
+};
+
+static const unsigned int jz4725b_codec_sample_rates[] = {
+ 96000, 48000, 44100, 32000,
+ 24000, 22050, 16000, 12000,
+ 11025, 9600, 8000,
+};
+
+static int jz4725b_codec_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct jz_icdc *icdc = 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(jz4725b_codec_sample_rates); rate++) {
+ if (jz4725b_codec_sample_rates[rate] == params_rate(params))
+ break;
+ }
+
+ if (rate == ARRAY_SIZE(jz4725b_codec_sample_rates))
+ return -EINVAL;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_update_bits(icdc->regmap,
+ JZ4725B_CODEC_REG_CR2,
+ REG_CR2_DAC_ADWL_MASK,
+ bit_width << REG_CR2_DAC_ADWL_OFFSET);
+
+ regmap_update_bits(icdc->regmap,
+ JZ4725B_CODEC_REG_CCR2,
+ REG_CCR2_DFREQ_MASK,
+ rate << REG_CCR2_DFREQ_OFFSET);
+ } else {
+ regmap_update_bits(icdc->regmap,
+ JZ4725B_CODEC_REG_CR2,
+ REG_CR2_ADC_ADWL_MASK,
+ bit_width << REG_CR2_ADC_ADWL_OFFSET);
+
+ regmap_update_bits(icdc->regmap,
+ JZ4725B_CODEC_REG_CCR2,
+ REG_CCR2_AFREQ_MASK,
+ rate << REG_CCR2_AFREQ_OFFSET);
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops jz4725b_codec_dai_ops = {
+ .hw_params = jz4725b_codec_hw_params,
+};
+
+#define JZ_ICDC_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 jz4725b_codec_dai = {
+ .name = "jz4725b-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = JZ_ICDC_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = JZ_ICDC_FORMATS,
+ },
+ .ops = &jz4725b_codec_dai_ops,
+};
+
+static bool jz4725b_codec_volatile(struct device *dev, unsigned int reg)
+{
+ return reg == JZ4725B_CODEC_REG_IFR;
+}
+
+static bool jz4725b_codec_can_access_reg(struct device *dev, unsigned int reg)
+{
+ return (reg != JZ4725B_CODEC_REG_TR1) && (reg != JZ4725B_CODEC_REG_TR2);
+}
+
+static int jz4725b_codec_io_wait(struct jz_icdc *icdc)
+{
+ u32 reg;
+
+ return readl_poll_timeout(icdc->base + ICDC_RGADW_OFFSET, reg,
+ !(reg & ICDC_RGADW_RGWR), 1000, 10000);
+}
+
+static int jz4725b_codec_reg_read(void *context, unsigned int reg,
+ unsigned int *val)
+{
+ struct jz_icdc *icdc = context;
+ unsigned int i;
+ u32 tmp;
+ int ret;
+
+ ret = jz4725b_codec_io_wait(icdc);
+ if (ret)
+ return ret;
+
+ tmp = readl(icdc->base + ICDC_RGADW_OFFSET);
+ tmp = (tmp & ~ICDC_RGADW_RGADDR_MASK)
+ | (reg << ICDC_RGADW_RGADDR_OFFSET);
+ writel(tmp, icdc->base + ICDC_RGADW_OFFSET);
+
+ /* wait 6+ cycles */
+ for (i = 0; i < 6; i++)
+ *val = readl(icdc->base + ICDC_RGDATA_OFFSET) &
+ ICDC_RGDATA_RGDOUT_MASK;
+
+ return 0;
+}
+
+static int jz4725b_codec_reg_write(void *context, unsigned int reg,
+ unsigned int val)
+{
+ struct jz_icdc *icdc = context;
+ int ret;
+
+ ret = jz4725b_codec_io_wait(icdc);
+ if (ret)
+ return ret;
+
+ writel(ICDC_RGADW_RGWR | (reg << ICDC_RGADW_RGADDR_OFFSET) | val,
+ icdc->base + ICDC_RGADW_OFFSET);
+
+ ret = jz4725b_codec_io_wait(icdc);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const u8 jz4725b_codec_reg_defaults[] = {
+ 0x0c, 0xaa, 0x78, 0x00, 0x00, 0xff, 0x03, 0x51,
+ 0x3f, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04,
+ 0x04, 0x0a, 0x0a, 0x00, 0x00, 0x00, 0xc0, 0x34,
+ 0x07, 0x44, 0x1f, 0x00,
+};
+
+static const struct regmap_config jz4725b_codec_regmap_config = {
+ .reg_bits = 7,
+ .val_bits = 8,
+
+ .max_register = JZ4725B_CODEC_REG_AGC5,
+ .volatile_reg = jz4725b_codec_volatile,
+ .readable_reg = jz4725b_codec_can_access_reg,
+ .writeable_reg = jz4725b_codec_can_access_reg,
+
+ .reg_read = jz4725b_codec_reg_read,
+ .reg_write = jz4725b_codec_reg_write,
+
+ .reg_defaults_raw = jz4725b_codec_reg_defaults,
+ .num_reg_defaults_raw = ARRAY_SIZE(jz4725b_codec_reg_defaults),
+ .cache_type = REGCACHE_FLAT,
+};
+
+static int jz4725b_codec_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct jz_icdc *icdc;
+ struct resource *mem;
+ int ret;
+
+ icdc = devm_kzalloc(dev, sizeof(*icdc), GFP_KERNEL);
+ if (!icdc)
+ return -ENOMEM;
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ icdc->base = devm_ioremap_resource(dev, mem);
+ if (IS_ERR(icdc->base))
+ return PTR_ERR(icdc->base);
+
+ icdc->regmap = devm_regmap_init(dev, NULL, icdc,
+ &jz4725b_codec_regmap_config);
+ if (IS_ERR(icdc->regmap))
+ return PTR_ERR(icdc->regmap);
+
+ icdc->clk = devm_clk_get(&pdev->dev, "aic");
+ if (IS_ERR(icdc->clk))
+ return PTR_ERR(icdc->clk);
+
+ platform_set_drvdata(pdev, icdc);
+
+ ret = devm_snd_soc_register_component(dev, &jz4725b_codec,
+ &jz4725b_codec_dai, 1);
+ if (ret)
+ dev_err(dev, "Failed to register codec\n");
+
+ return ret;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id jz4725b_codec_of_matches[] = {
+ { .compatible = "ingenic,jz4725b-codec", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, jz4725b_codec_of_matches);
+#endif
+
+static struct platform_driver jz4725b_codec_driver = {
+ .probe = jz4725b_codec_probe,
+ .driver = {
+ .name = "jz4725b-codec",
+ .of_match_table = of_match_ptr(jz4725b_codec_of_matches),
+ },
+};
+module_platform_driver(jz4725b_codec_driver);
+
+MODULE_DESCRIPTION("JZ4725B SoC internal codec driver");
+MODULE_AUTHOR("Paul Cercueil <paul at crapouillou.net>");
+MODULE_LICENSE("GPL v2");
--
2.11.0
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