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-rw-r--r--sound/soc/codecs/max9867.c671
1 files changed, 671 insertions, 0 deletions
diff --git a/sound/soc/codecs/max9867.c b/sound/soc/codecs/max9867.c
new file mode 100644
index 000000000..6d2941a9d
--- /dev/null
+++ b/sound/soc/codecs/max9867.c
@@ -0,0 +1,671 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// MAX9867 ALSA SoC codec driver
+//
+// Copyright 2013-2015 Maxim Integrated Products
+// Copyright 2018 Ladislav Michl <ladis@linux-mips.org>
+//
+
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include "max9867.h"
+
+struct max9867_priv {
+ struct regmap *regmap;
+ const struct snd_pcm_hw_constraint_list *constraints;
+ unsigned int sysclk, pclk;
+ bool provider, dsp_a;
+ unsigned int adc_dac_active;
+};
+
+static const char *const max9867_spmode[] = {
+ "Stereo Diff", "Mono Diff",
+ "Stereo Cap", "Mono Cap",
+ "Stereo Single", "Mono Single",
+ "Stereo Single Fast", "Mono Single Fast"
+};
+static const char *const max9867_filter_text[] = {"IIR", "FIR"};
+
+static const char *const max9867_adc_dac_filter_text[] = {
+ "Disabled",
+ "Elliptical/16/256",
+ "Butterworth/16/500",
+ "Elliptical/8/256",
+ "Butterworth/8/500",
+ "Butterworth/8-24"
+};
+
+enum max9867_adc_dac {
+ MAX9867_ADC_LEFT,
+ MAX9867_ADC_RIGHT,
+ MAX9867_DAC_LEFT,
+ MAX9867_DAC_RIGHT,
+};
+
+static int max9867_adc_dac_event(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 max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ enum max9867_adc_dac adc_dac;
+
+ if (!strcmp(w->name, "ADCL"))
+ adc_dac = MAX9867_ADC_LEFT;
+ else if (!strcmp(w->name, "ADCR"))
+ adc_dac = MAX9867_ADC_RIGHT;
+ else if (!strcmp(w->name, "DACL"))
+ adc_dac = MAX9867_DAC_LEFT;
+ else if (!strcmp(w->name, "DACR"))
+ adc_dac = MAX9867_DAC_RIGHT;
+ else
+ return 0;
+
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ max9867->adc_dac_active |= BIT(adc_dac);
+ else if (SND_SOC_DAPM_EVENT_OFF(event))
+ max9867->adc_dac_active &= ~BIT(adc_dac);
+
+ return 0;
+}
+
+static int max9867_filter_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
+ if (ret)
+ return -EINVAL;
+
+ if (reg & MAX9867_CODECFLTR_MODE)
+ ucontrol->value.enumerated.item[0] = 1;
+ else
+ ucontrol->value.enumerated.item[0] = 0;
+
+ return 0;
+}
+
+static int max9867_filter_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ unsigned int reg, mode = ucontrol->value.enumerated.item[0];
+ int ret;
+
+ if (mode > 1)
+ return -EINVAL;
+
+ /* don't allow change if ADC/DAC active */
+ if (max9867->adc_dac_active)
+ return -EBUSY;
+
+ /* read current filter mode */
+ ret = regmap_read(max9867->regmap, MAX9867_CODECFLTR, &reg);
+ if (ret)
+ return -EINVAL;
+
+ if (mode)
+ mode = MAX9867_CODECFLTR_MODE;
+
+ /* check if change is needed */
+ if ((reg & MAX9867_CODECFLTR_MODE) == mode)
+ return 0;
+
+ /* shutdown codec before switching filter mode */
+ regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
+ MAX9867_PWRMAN_SHDN, 0);
+
+ /* switch filter mode */
+ regmap_update_bits(max9867->regmap, MAX9867_CODECFLTR,
+ MAX9867_CODECFLTR_MODE, mode);
+
+ /* out of shutdown now */
+ regmap_update_bits(max9867->regmap, MAX9867_PWRMAN,
+ MAX9867_PWRMAN_SHDN, MAX9867_PWRMAN_SHDN);
+
+ return 0;
+}
+
+static SOC_ENUM_SINGLE_EXT_DECL(max9867_filter, max9867_filter_text);
+static SOC_ENUM_SINGLE_DECL(max9867_dac_filter, MAX9867_CODECFLTR, 0,
+ max9867_adc_dac_filter_text);
+static SOC_ENUM_SINGLE_DECL(max9867_adc_filter, MAX9867_CODECFLTR, 4,
+ max9867_adc_dac_filter_text);
+static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0,
+ max9867_spmode);
+static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_master_tlv,
+ 0, 2, TLV_DB_SCALE_ITEM(-8600, 200, 1),
+ 3, 17, TLV_DB_SCALE_ITEM(-7800, 400, 0),
+ 18, 25, TLV_DB_SCALE_ITEM(-2000, 200, 0),
+ 26, 34, TLV_DB_SCALE_ITEM( -500, 100, 0),
+ 35, 40, TLV_DB_SCALE_ITEM( 350, 50, 0),
+);
+static DECLARE_TLV_DB_SCALE(max9867_mic_tlv, 0, 100, 0);
+static DECLARE_TLV_DB_SCALE(max9867_line_tlv, -600, 200, 0);
+static DECLARE_TLV_DB_SCALE(max9867_adc_tlv, -1200, 100, 0);
+static DECLARE_TLV_DB_SCALE(max9867_dac_tlv, -1500, 100, 0);
+static DECLARE_TLV_DB_SCALE(max9867_dacboost_tlv, 0, 600, 0);
+static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(max9867_micboost_tlv,
+ 0, 2, TLV_DB_SCALE_ITEM(-2000, 2000, 1),
+ 3, 3, TLV_DB_SCALE_ITEM(3000, 0, 0),
+);
+
+static const struct snd_kcontrol_new max9867_snd_controls[] = {
+ SOC_DOUBLE_R_TLV("Master Playback Volume", MAX9867_LEFTVOL,
+ MAX9867_RIGHTVOL, 0, 40, 1, max9867_master_tlv),
+ SOC_DOUBLE_R_TLV("Line Capture Volume", MAX9867_LEFTLINELVL,
+ MAX9867_RIGHTLINELVL, 0, 15, 1, max9867_line_tlv),
+ SOC_DOUBLE_R_TLV("Mic Capture Volume", MAX9867_LEFTMICGAIN,
+ MAX9867_RIGHTMICGAIN, 0, 20, 1, max9867_mic_tlv),
+ SOC_DOUBLE_R_TLV("Mic Boost Capture Volume", MAX9867_LEFTMICGAIN,
+ MAX9867_RIGHTMICGAIN, 5, 3, 0, max9867_micboost_tlv),
+ SOC_SINGLE("Digital Sidetone Volume", MAX9867_SIDETONE, 0, 31, 1),
+ SOC_SINGLE_TLV("Digital Playback Volume", MAX9867_DACLEVEL, 0, 15, 1,
+ max9867_dac_tlv),
+ SOC_SINGLE_TLV("Digital Boost Playback Volume", MAX9867_DACLEVEL, 4, 3, 0,
+ max9867_dacboost_tlv),
+ SOC_DOUBLE_TLV("Digital Capture Volume", MAX9867_ADCLEVEL, 4, 0, 15, 1,
+ max9867_adc_tlv),
+ SOC_ENUM("Speaker Mode", max9867_spkmode),
+ SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0),
+ SOC_SINGLE("Line ZC Switch", MAX9867_MODECONFIG, 5, 1, 0),
+ SOC_ENUM_EXT("DSP Filter", max9867_filter, max9867_filter_get, max9867_filter_set),
+ SOC_ENUM("ADC Filter", max9867_adc_filter),
+ SOC_ENUM("DAC Filter", max9867_dac_filter),
+ SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0),
+};
+
+/* Input mixer */
+static const struct snd_kcontrol_new max9867_input_mixer_controls[] = {
+ SOC_DAPM_DOUBLE("Line Capture Switch", MAX9867_INPUTCONFIG, 7, 5, 1, 0),
+ SOC_DAPM_DOUBLE("Mic Capture Switch", MAX9867_INPUTCONFIG, 6, 4, 1, 0),
+};
+
+/* Output mixer */
+static const struct snd_kcontrol_new max9867_output_mixer_controls[] = {
+ SOC_DAPM_DOUBLE_R("Line Bypass Switch",
+ MAX9867_LEFTLINELVL, MAX9867_RIGHTLINELVL, 6, 1, 1),
+};
+
+/* Sidetone mixer */
+static const struct snd_kcontrol_new max9867_sidetone_mixer_controls[] = {
+ SOC_DAPM_DOUBLE("Sidetone Switch", MAX9867_SIDETONE, 6, 7, 1, 0),
+};
+
+/* Line out switch */
+static const struct snd_kcontrol_new max9867_line_out_control =
+ SOC_DAPM_DOUBLE_R("Switch",
+ MAX9867_LEFTVOL, MAX9867_RIGHTVOL, 6, 1, 1);
+
+/* DMIC mux */
+static const char *const dmic_mux_text[] = {
+ "ADC", "DMIC"
+};
+static SOC_ENUM_SINGLE_DECL(left_dmic_mux_enum,
+ MAX9867_MICCONFIG, 5, dmic_mux_text);
+static SOC_ENUM_SINGLE_DECL(right_dmic_mux_enum,
+ MAX9867_MICCONFIG, 4, dmic_mux_text);
+static const struct snd_kcontrol_new max9867_left_dmic_mux =
+ SOC_DAPM_ENUM("DMICL Mux", left_dmic_mux_enum);
+static const struct snd_kcontrol_new max9867_right_dmic_mux =
+ SOC_DAPM_ENUM("DMICR Mux", right_dmic_mux_enum);
+
+static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = {
+ SND_SOC_DAPM_INPUT("MICL"),
+ SND_SOC_DAPM_INPUT("MICR"),
+ SND_SOC_DAPM_INPUT("DMICL"),
+ SND_SOC_DAPM_INPUT("DMICR"),
+ SND_SOC_DAPM_INPUT("LINL"),
+ SND_SOC_DAPM_INPUT("LINR"),
+
+ SND_SOC_DAPM_PGA("Left Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Right Line Input", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_MIXER_NAMED_CTL("Input Mixer", SND_SOC_NOPM, 0, 0,
+ max9867_input_mixer_controls,
+ ARRAY_SIZE(max9867_input_mixer_controls)),
+ SND_SOC_DAPM_MUX("DMICL Mux", SND_SOC_NOPM, 0, 0,
+ &max9867_left_dmic_mux),
+ SND_SOC_DAPM_MUX("DMICR Mux", SND_SOC_NOPM, 0, 0,
+ &max9867_right_dmic_mux),
+ SND_SOC_DAPM_ADC_E("ADCL", "HiFi Capture", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_ADC_E("ADCR", "HiFi Capture", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+ SND_SOC_DAPM_MIXER("Digital", SND_SOC_NOPM, 0, 0,
+ max9867_sidetone_mixer_controls,
+ ARRAY_SIZE(max9867_sidetone_mixer_controls)),
+ SND_SOC_DAPM_MIXER_NAMED_CTL("Output Mixer", SND_SOC_NOPM, 0, 0,
+ max9867_output_mixer_controls,
+ ARRAY_SIZE(max9867_output_mixer_controls)),
+ SND_SOC_DAPM_DAC_E("DACL", "HiFi Playback", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_DAC_E("DACR", "HiFi Playback", SND_SOC_NOPM, 0, 0,
+ max9867_adc_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SWITCH("Master Playback", SND_SOC_NOPM, 0, 0,
+ &max9867_line_out_control),
+ SND_SOC_DAPM_OUTPUT("LOUT"),
+ SND_SOC_DAPM_OUTPUT("ROUT"),
+};
+
+static const struct snd_soc_dapm_route max9867_audio_map[] = {
+ {"Left Line Input", NULL, "LINL"},
+ {"Right Line Input", NULL, "LINR"},
+ {"Input Mixer", "Mic Capture Switch", "MICL"},
+ {"Input Mixer", "Mic Capture Switch", "MICR"},
+ {"Input Mixer", "Line Capture Switch", "Left Line Input"},
+ {"Input Mixer", "Line Capture Switch", "Right Line Input"},
+ {"DMICL Mux", "DMIC", "DMICL"},
+ {"DMICR Mux", "DMIC", "DMICR"},
+ {"DMICL Mux", "ADC", "Input Mixer"},
+ {"DMICR Mux", "ADC", "Input Mixer"},
+ {"ADCL", NULL, "DMICL Mux"},
+ {"ADCR", NULL, "DMICR Mux"},
+
+ {"Digital", "Sidetone Switch", "ADCL"},
+ {"Digital", "Sidetone Switch", "ADCR"},
+ {"DACL", NULL, "Digital"},
+ {"DACR", NULL, "Digital"},
+
+ {"Output Mixer", "Line Bypass Switch", "Left Line Input"},
+ {"Output Mixer", "Line Bypass Switch", "Right Line Input"},
+ {"Output Mixer", NULL, "DACL"},
+ {"Output Mixer", NULL, "DACR"},
+ {"Master Playback", "Switch", "Output Mixer"},
+ {"LOUT", NULL, "Master Playback"},
+ {"ROUT", NULL, "Master Playback"},
+};
+
+static const unsigned int max9867_rates_44k1[] = {
+ 11025, 22050, 44100,
+};
+
+static const struct snd_pcm_hw_constraint_list max9867_constraints_44k1 = {
+ .list = max9867_rates_44k1,
+ .count = ARRAY_SIZE(max9867_rates_44k1),
+};
+
+static const unsigned int max9867_rates_48k[] = {
+ 8000, 16000, 32000, 48000,
+};
+
+static const struct snd_pcm_hw_constraint_list max9867_constraints_48k = {
+ .list = max9867_rates_48k,
+ .count = ARRAY_SIZE(max9867_rates_48k),
+};
+
+static int max9867_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct max9867_priv *max9867 =
+ snd_soc_component_get_drvdata(dai->component);
+
+ if (max9867->constraints)
+ snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE, max9867->constraints);
+
+ return 0;
+}
+
+static int max9867_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ int value;
+ unsigned long int rate, ratio;
+ struct snd_soc_component *component = dai->component;
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ unsigned int ni = DIV_ROUND_CLOSEST_ULL(96ULL * 0x10000 * params_rate(params),
+ max9867->pclk);
+
+ /* set up the ni value */
+ regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
+ MAX9867_NI_HIGH_MASK, (0xFF00 & ni) >> 8);
+ regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
+ MAX9867_NI_LOW_MASK, 0x00FF & ni);
+ if (max9867->provider) {
+ if (max9867->dsp_a) {
+ value = MAX9867_IFC1B_48X;
+ } else {
+ rate = params_rate(params) * 2 * params_width(params);
+ ratio = max9867->pclk / rate;
+ switch (params_width(params)) {
+ case 8:
+ case 16:
+ switch (ratio) {
+ case 2:
+ value = MAX9867_IFC1B_PCLK_2;
+ break;
+ case 4:
+ value = MAX9867_IFC1B_PCLK_4;
+ break;
+ case 8:
+ value = MAX9867_IFC1B_PCLK_8;
+ break;
+ case 16:
+ value = MAX9867_IFC1B_PCLK_16;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ case 24:
+ value = MAX9867_IFC1B_48X;
+ break;
+ case 32:
+ value = MAX9867_IFC1B_64X;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
+ MAX9867_IFC1B_BCLK_MASK, value);
+ } else {
+ /*
+ * digital pll locks on to any externally supplied LRCLK signal
+ * and also enable rapid lock mode.
+ */
+ regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW,
+ MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK);
+ regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH,
+ MAX9867_PLL, MAX9867_PLL);
+ }
+ return 0;
+}
+
+static int max9867_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+
+ return regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL,
+ 1 << 6, !!mute << 6);
+}
+
+static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ int value = 0;
+
+ /* Set the prescaler based on the master clock frequency*/
+ if (freq >= 10000000 && freq <= 20000000) {
+ value |= MAX9867_PSCLK_10_20;
+ max9867->pclk = freq;
+ } else if (freq >= 20000000 && freq <= 40000000) {
+ value |= MAX9867_PSCLK_20_40;
+ max9867->pclk = freq / 2;
+ } else if (freq >= 40000000 && freq <= 60000000) {
+ value |= MAX9867_PSCLK_40_60;
+ max9867->pclk = freq / 4;
+ } else {
+ dev_err(component->dev,
+ "Invalid clock frequency %uHz (required 10-60MHz)\n",
+ freq);
+ return -EINVAL;
+ }
+ if (freq % 48000 == 0)
+ max9867->constraints = &max9867_constraints_48k;
+ else if (freq % 44100 == 0)
+ max9867->constraints = &max9867_constraints_44k1;
+ else
+ dev_warn(component->dev,
+ "Unable to set exact rate with %uHz clock frequency\n",
+ freq);
+ max9867->sysclk = freq;
+ value = value << MAX9867_PSCLK_SHIFT;
+ /* exact integer mode is not supported */
+ value &= ~MAX9867_FREQ_MASK;
+ regmap_update_bits(max9867->regmap, MAX9867_SYSCLK,
+ MAX9867_PSCLK_MASK, value);
+ return 0;
+}
+
+static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+ u8 iface1A, iface1B;
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBP_CFP:
+ max9867->provider = true;
+ iface1A = MAX9867_MASTER;
+ iface1B = MAX9867_IFC1B_48X;
+ break;
+ case SND_SOC_DAIFMT_CBC_CFC:
+ max9867->provider = false;
+ iface1A = iface1B = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ max9867->dsp_a = false;
+ iface1A |= MAX9867_I2S_DLY;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ max9867->dsp_a = true;
+ iface1A |= MAX9867_TDM_MODE | MAX9867_SDOUT_HIZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Clock inversion bits, BCI and WCI */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ iface1A |= MAX9867_BCI_MODE;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ iface1A |= MAX9867_WCI_MODE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A);
+ regmap_update_bits(max9867->regmap, MAX9867_IFC1B,
+ MAX9867_IFC1B_BCLK_MASK, iface1B);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops max9867_dai_ops = {
+ .set_sysclk = max9867_set_dai_sysclk,
+ .set_fmt = max9867_dai_set_fmt,
+ .mute_stream = max9867_mute,
+ .startup = max9867_startup,
+ .hw_params = max9867_dai_hw_params,
+ .no_capture_mute = 1,
+};
+
+static struct snd_soc_dai_driver max9867_dai[] = {
+ {
+ .name = "max9867-aif1",
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "HiFi Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &max9867_dai_ops,
+ .symmetric_rate = 1,
+ }
+};
+
+#ifdef CONFIG_PM
+static int max9867_suspend(struct snd_soc_component *component)
+{
+ snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+static int max9867_resume(struct snd_soc_component *component)
+{
+ snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
+
+ return 0;
+}
+#else
+#define max9867_suspend NULL
+#define max9867_resume NULL
+#endif
+
+static int max9867_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ int err;
+ struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
+
+ switch (level) {
+ case SND_SOC_BIAS_STANDBY:
+ if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
+ err = regcache_sync(max9867->regmap);
+ if (err)
+ return err;
+
+ err = regmap_write(max9867->regmap,
+ MAX9867_PWRMAN, 0xff);
+ if (err)
+ return err;
+ }
+ break;
+ case SND_SOC_BIAS_OFF:
+ err = regmap_write(max9867->regmap, MAX9867_PWRMAN, 0);
+ if (err)
+ return err;
+
+ regcache_mark_dirty(max9867->regmap);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver max9867_component = {
+ .controls = max9867_snd_controls,
+ .num_controls = ARRAY_SIZE(max9867_snd_controls),
+ .dapm_routes = max9867_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(max9867_audio_map),
+ .dapm_widgets = max9867_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets),
+ .suspend = max9867_suspend,
+ .resume = max9867_resume,
+ .set_bias_level = max9867_set_bias_level,
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+static bool max9867_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX9867_STATUS:
+ case MAX9867_JACKSTATUS:
+ case MAX9867_AUXHIGH:
+ case MAX9867_AUXLOW:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config max9867_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX9867_REVISION,
+ .volatile_reg = max9867_volatile_register,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int max9867_i2c_probe(struct i2c_client *i2c)
+{
+ struct max9867_priv *max9867;
+ int ret, reg;
+
+ max9867 = devm_kzalloc(&i2c->dev, sizeof(*max9867), GFP_KERNEL);
+ if (!max9867)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, max9867);
+ max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap);
+ if (IS_ERR(max9867->regmap)) {
+ ret = PTR_ERR(max9867->regmap);
+ dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
+ return ret;
+ }
+ ret = regmap_read(max9867->regmap, MAX9867_REVISION, &reg);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to read: %d\n", ret);
+ return ret;
+ }
+ dev_info(&i2c->dev, "device revision: %x\n", reg);
+ ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
+ max9867_dai, ARRAY_SIZE(max9867_dai));
+ if (ret < 0)
+ dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
+ return ret;
+}
+
+static const struct i2c_device_id max9867_i2c_id[] = {
+ { "max9867", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max9867_i2c_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id max9867_of_match[] = {
+ { .compatible = "maxim,max9867", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, max9867_of_match);
+#endif
+
+static struct i2c_driver max9867_i2c_driver = {
+ .driver = {
+ .name = "max9867",
+ .of_match_table = of_match_ptr(max9867_of_match),
+ },
+ .probe_new = max9867_i2c_probe,
+ .id_table = max9867_i2c_id,
+};
+
+module_i2c_driver(max9867_i2c_driver);
+
+MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>");
+MODULE_DESCRIPTION("ASoC MAX9867 driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 11:10:05 +0000