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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /sound/soc/codecs/max9860.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/codecs/max9860.c')
-rw-r--r--sound/soc/codecs/max9860.c740
1 files changed, 740 insertions, 0 deletions
diff --git a/sound/soc/codecs/max9860.c b/sound/soc/codecs/max9860.c
new file mode 100644
index 000000000..9611ab1e7
--- /dev/null
+++ b/sound/soc/codecs/max9860.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Driver for the MAX9860 Mono Audio Voice Codec
+//
+// https://datasheets.maximintegrated.com/en/ds/MAX9860.pdf
+//
+// The driver does not support sidetone since the DVST register field is
+// backwards with the mute near the maximum level instead of the minimum.
+//
+// Author: Peter Rosin <peda@axentia.s>
+// Copyright 2016 Axentia Technologies
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/i2c.h>
+#include <linux/regulator/consumer.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+
+#include "max9860.h"
+
+struct max9860_priv {
+ struct regmap *regmap;
+ struct regulator *dvddio;
+ struct notifier_block dvddio_nb;
+ u8 psclk;
+ unsigned long pclk_rate;
+ int fmt;
+};
+
+static int max9860_dvddio_event(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct max9860_priv *max9860 = container_of(nb, struct max9860_priv,
+ dvddio_nb);
+ if (event & REGULATOR_EVENT_DISABLE) {
+ regcache_mark_dirty(max9860->regmap);
+ regcache_cache_only(max9860->regmap, true);
+ }
+
+ return 0;
+}
+
+static const struct reg_default max9860_reg_defaults[] = {
+ { MAX9860_PWRMAN, 0x00 },
+ { MAX9860_INTEN, 0x00 },
+ { MAX9860_SYSCLK, 0x00 },
+ { MAX9860_AUDIOCLKHIGH, 0x00 },
+ { MAX9860_AUDIOCLKLOW, 0x00 },
+ { MAX9860_IFC1A, 0x00 },
+ { MAX9860_IFC1B, 0x00 },
+ { MAX9860_VOICEFLTR, 0x00 },
+ { MAX9860_DACATTN, 0x00 },
+ { MAX9860_ADCLEVEL, 0x00 },
+ { MAX9860_DACGAIN, 0x00 },
+ { MAX9860_MICGAIN, 0x00 },
+ { MAX9860_MICADC, 0x00 },
+ { MAX9860_NOISEGATE, 0x00 },
+};
+
+static bool max9860_readable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX9860_INTRSTATUS ... MAX9860_MICGAIN:
+ case MAX9860_MICADC ... MAX9860_PWRMAN:
+ case MAX9860_REVISION:
+ return true;
+ }
+
+ return false;
+}
+
+static bool max9860_writeable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX9860_INTEN ... MAX9860_MICGAIN:
+ case MAX9860_MICADC ... MAX9860_PWRMAN:
+ return true;
+ }
+
+ return false;
+}
+
+static bool max9860_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX9860_INTRSTATUS:
+ case MAX9860_MICREADBACK:
+ return true;
+ }
+
+ return false;
+}
+
+static bool max9860_precious(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX9860_INTRSTATUS:
+ return true;
+ }
+
+ return false;
+}
+
+static const struct regmap_config max9860_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .readable_reg = max9860_readable,
+ .writeable_reg = max9860_writeable,
+ .volatile_reg = max9860_volatile,
+ .precious_reg = max9860_precious,
+
+ .max_register = MAX9860_MAX_REGISTER,
+ .reg_defaults = max9860_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(max9860_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static const DECLARE_TLV_DB_SCALE(dva_tlv, -9100, 100, 1);
+static const DECLARE_TLV_DB_SCALE(dvg_tlv, 0, 600, 0);
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
+static const DECLARE_TLV_DB_RANGE(pam_tlv,
+ 0, MAX9860_PAM_MAX - 1, TLV_DB_SCALE_ITEM(-2000, 2000, 1),
+ MAX9860_PAM_MAX, MAX9860_PAM_MAX, TLV_DB_SCALE_ITEM(3000, 0, 0));
+static const DECLARE_TLV_DB_SCALE(pgam_tlv, 0, 100, 0);
+static const DECLARE_TLV_DB_SCALE(anth_tlv, -7600, 400, 1);
+static const DECLARE_TLV_DB_SCALE(agcth_tlv, -1800, 100, 0);
+
+static const char * const agchld_text[] = {
+ "AGC Disabled", "50ms", "100ms", "400ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(agchld_enum, MAX9860_MICADC,
+ MAX9860_AGCHLD_SHIFT, agchld_text);
+
+static const char * const agcsrc_text[] = {
+ "Left ADC", "Left/Right ADC"
+};
+
+static SOC_ENUM_SINGLE_DECL(agcsrc_enum, MAX9860_MICADC,
+ MAX9860_AGCSRC_SHIFT, agcsrc_text);
+
+static const char * const agcatk_text[] = {
+ "3ms", "12ms", "50ms", "200ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(agcatk_enum, MAX9860_MICADC,
+ MAX9860_AGCATK_SHIFT, agcatk_text);
+
+static const char * const agcrls_text[] = {
+ "78ms", "156ms", "312ms", "625ms",
+ "1.25s", "2.5s", "5s", "10s"
+};
+
+static SOC_ENUM_SINGLE_DECL(agcrls_enum, MAX9860_MICADC,
+ MAX9860_AGCRLS_SHIFT, agcrls_text);
+
+static const char * const filter_text[] = {
+ "Disabled",
+ "Elliptical HP 217Hz notch (16kHz)",
+ "Butterworth HP 500Hz (16kHz)",
+ "Elliptical HP 217Hz notch (8kHz)",
+ "Butterworth HP 500Hz (8kHz)",
+ "Butterworth HP 200Hz (48kHz)"
+};
+
+static SOC_ENUM_SINGLE_DECL(avflt_enum, MAX9860_VOICEFLTR,
+ MAX9860_AVFLT_SHIFT, filter_text);
+
+static SOC_ENUM_SINGLE_DECL(dvflt_enum, MAX9860_VOICEFLTR,
+ MAX9860_DVFLT_SHIFT, filter_text);
+
+static const struct snd_kcontrol_new max9860_controls[] = {
+SOC_SINGLE_TLV("Master Playback Volume", MAX9860_DACATTN,
+ MAX9860_DVA_SHIFT, MAX9860_DVA_MUTE, 1, dva_tlv),
+SOC_SINGLE_TLV("DAC Gain Volume", MAX9860_DACGAIN,
+ MAX9860_DVG_SHIFT, MAX9860_DVG_MAX, 0, dvg_tlv),
+SOC_DOUBLE_TLV("Line Capture Volume", MAX9860_ADCLEVEL,
+ MAX9860_ADCLL_SHIFT, MAX9860_ADCRL_SHIFT, MAX9860_ADCxL_MIN, 1,
+ adc_tlv),
+
+SOC_ENUM("AGC Hold Time", agchld_enum),
+SOC_ENUM("AGC/Noise Gate Source", agcsrc_enum),
+SOC_ENUM("AGC Attack Time", agcatk_enum),
+SOC_ENUM("AGC Release Time", agcrls_enum),
+
+SOC_SINGLE_TLV("Noise Gate Threshold Volume", MAX9860_NOISEGATE,
+ MAX9860_ANTH_SHIFT, MAX9860_ANTH_MAX, 0, anth_tlv),
+SOC_SINGLE_TLV("AGC Signal Threshold Volume", MAX9860_NOISEGATE,
+ MAX9860_AGCTH_SHIFT, MAX9860_AGCTH_MIN, 1, agcth_tlv),
+
+SOC_SINGLE_TLV("Mic PGA Volume", MAX9860_MICGAIN,
+ MAX9860_PGAM_SHIFT, MAX9860_PGAM_MIN, 1, pgam_tlv),
+SOC_SINGLE_TLV("Mic Preamp Volume", MAX9860_MICGAIN,
+ MAX9860_PAM_SHIFT, MAX9860_PAM_MAX, 0, pam_tlv),
+
+SOC_ENUM("ADC Filter", avflt_enum),
+SOC_ENUM("DAC Filter", dvflt_enum),
+};
+
+static const struct snd_soc_dapm_widget max9860_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("MICL"),
+SND_SOC_DAPM_INPUT("MICR"),
+
+SND_SOC_DAPM_ADC("ADCL", NULL, MAX9860_PWRMAN, MAX9860_ADCLEN_SHIFT, 0),
+SND_SOC_DAPM_ADC("ADCR", NULL, MAX9860_PWRMAN, MAX9860_ADCREN_SHIFT, 0),
+
+SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
+SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
+
+SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
+SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
+
+SND_SOC_DAPM_DAC("DAC", NULL, MAX9860_PWRMAN, MAX9860_DACEN_SHIFT, 0),
+
+SND_SOC_DAPM_OUTPUT("OUT"),
+
+SND_SOC_DAPM_SUPPLY("Supply", SND_SOC_NOPM, 0, 0,
+ NULL, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+SND_SOC_DAPM_REGULATOR_SUPPLY("AVDD", 0, 0),
+SND_SOC_DAPM_REGULATOR_SUPPLY("DVDD", 0, 0),
+SND_SOC_DAPM_CLOCK_SUPPLY("mclk"),
+};
+
+static const struct snd_soc_dapm_route max9860_dapm_routes[] = {
+ { "ADCL", NULL, "MICL" },
+ { "ADCR", NULL, "MICR" },
+ { "AIFOUTL", NULL, "ADCL" },
+ { "AIFOUTR", NULL, "ADCR" },
+
+ { "DAC", NULL, "AIFINL" },
+ { "DAC", NULL, "AIFINR" },
+ { "OUT", NULL, "DAC" },
+
+ { "Supply", NULL, "AVDD" },
+ { "Supply", NULL, "DVDD" },
+ { "Supply", NULL, "mclk" },
+
+ { "DAC", NULL, "Supply" },
+ { "ADCL", NULL, "Supply" },
+ { "ADCR", NULL, "Supply" },
+};
+
+static int max9860_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct max9860_priv *max9860 = snd_soc_component_get_drvdata(component);
+ u8 master;
+ u8 ifc1a = 0;
+ u8 ifc1b = 0;
+ u8 sysclk = 0;
+ unsigned long n;
+ int ret;
+
+ dev_dbg(component->dev, "hw_params %u Hz, %u channels\n",
+ params_rate(params),
+ params_channels(params));
+
+ if (params_channels(params) == 2)
+ ifc1b |= MAX9860_ST;
+
+ switch (max9860->fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ master = 0;
+ break;
+ case SND_SOC_DAIFMT_CBP_CFP:
+ master = MAX9860_MASTER;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ifc1a |= master;
+
+ if (master) {
+ if (params_width(params) * params_channels(params) > 48)
+ ifc1b |= MAX9860_BSEL_64X;
+ else
+ ifc1b |= MAX9860_BSEL_48X;
+ }
+
+ switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ifc1a |= MAX9860_DDLY;
+ ifc1b |= MAX9860_ADLY;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ifc1a |= MAX9860_WCI;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ if (params_width(params) != 16) {
+ dev_err(component->dev,
+ "DSP_A works for 16 bits per sample only.\n");
+ return -EINVAL;
+ }
+ ifc1a |= MAX9860_DDLY | MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM;
+ ifc1b |= MAX9860_ADLY;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ if (params_width(params) != 16) {
+ dev_err(component->dev,
+ "DSP_B works for 16 bits per sample only.\n");
+ return -EINVAL;
+ }
+ ifc1a |= MAX9860_WCI | MAX9860_HIZ | MAX9860_TDM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (max9860->fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ return -EINVAL;
+ }
+ ifc1a ^= MAX9860_WCI;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ switch (max9860->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ return -EINVAL;
+ }
+ ifc1a ^= MAX9860_WCI;
+ fallthrough;
+ case SND_SOC_DAIFMT_IB_NF:
+ ifc1a ^= MAX9860_DBCI;
+ ifc1b ^= MAX9860_ABCI;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ dev_dbg(component->dev, "IFC1A %02x\n", ifc1a);
+ ret = regmap_write(max9860->regmap, MAX9860_IFC1A, ifc1a);
+ if (ret) {
+ dev_err(component->dev, "Failed to set IFC1A: %d\n", ret);
+ return ret;
+ }
+ dev_dbg(component->dev, "IFC1B %02x\n", ifc1b);
+ ret = regmap_write(max9860->regmap, MAX9860_IFC1B, ifc1b);
+ if (ret) {
+ dev_err(component->dev, "Failed to set IFC1B: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * Check if Integer Clock Mode is possible, but avoid it in slave mode
+ * since we then do not know if lrclk is derived from pclk and the
+ * datasheet mentions that the frequencies have to match exactly in
+ * order for this to work.
+ */
+ if (params_rate(params) == 8000 || params_rate(params) == 16000) {
+ if (master) {
+ switch (max9860->pclk_rate) {
+ case 12000000:
+ sysclk = MAX9860_FREQ_12MHZ;
+ break;
+ case 13000000:
+ sysclk = MAX9860_FREQ_13MHZ;
+ break;
+ case 19200000:
+ sysclk = MAX9860_FREQ_19_2MHZ;
+ break;
+ default:
+ /*
+ * Integer Clock Mode not possible. Leave
+ * sysclk at zero and fall through to the
+ * code below for PLL mode.
+ */
+ break;
+ }
+
+ if (sysclk && params_rate(params) == 16000)
+ sysclk |= MAX9860_16KHZ;
+ }
+ }
+
+ /*
+ * Largest possible n:
+ * 65536 * 96 * 48kHz / 10MHz -> 30199
+ * Smallest possible n:
+ * 65536 * 96 * 8kHz / 20MHz -> 2517
+ * Both fit nicely in the available 15 bits, no need to apply any mask.
+ */
+ n = DIV_ROUND_CLOSEST_ULL(65536ULL * 96 * params_rate(params),
+ max9860->pclk_rate);
+
+ if (!sysclk) {
+ /* PLL mode */
+ if (params_rate(params) > 24000)
+ sysclk |= MAX9860_16KHZ;
+
+ if (!master)
+ n |= 1; /* trigger rapid pll lock mode */
+ }
+
+ sysclk |= max9860->psclk;
+ dev_dbg(component->dev, "SYSCLK %02x\n", sysclk);
+ ret = regmap_write(max9860->regmap,
+ MAX9860_SYSCLK, sysclk);
+ if (ret) {
+ dev_err(component->dev, "Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+ dev_dbg(component->dev, "N %lu\n", n);
+ ret = regmap_write(max9860->regmap,
+ MAX9860_AUDIOCLKHIGH, n >> 8);
+ if (ret) {
+ dev_err(component->dev, "Failed to set NHI: %d\n", ret);
+ return ret;
+ }
+ ret = regmap_write(max9860->regmap,
+ MAX9860_AUDIOCLKLOW, n & 0xff);
+ if (ret) {
+ dev_err(component->dev, "Failed to set NLO: %d\n", ret);
+ return ret;
+ }
+
+ if (!master) {
+ dev_dbg(component->dev, "Enable PLL\n");
+ ret = regmap_update_bits(max9860->regmap, MAX9860_AUDIOCLKHIGH,
+ MAX9860_PLL, MAX9860_PLL);
+ if (ret) {
+ dev_err(component->dev, "Failed to enable PLL: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int max9860_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct max9860_priv *max9860 = snd_soc_component_get_drvdata(component);
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBP_CFP:
+ case SND_SOC_DAIFMT_CBC_CFC:
+ max9860->fmt = fmt;
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct snd_soc_dai_ops max9860_dai_ops = {
+ .hw_params = max9860_hw_params,
+ .set_fmt = max9860_set_fmt,
+};
+
+static struct snd_soc_dai_driver max9860_dai = {
+ .name = "max9860-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &max9860_dai_ops,
+ .symmetric_rate = 1,
+};
+
+static int max9860_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct max9860_priv *max9860 = dev_get_drvdata(component->dev);
+ int ret;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ case SND_SOC_BIAS_PREPARE:
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN,
+ MAX9860_SHDN, MAX9860_SHDN);
+ if (ret) {
+ dev_err(component->dev, "Failed to remove SHDN: %d\n",
+ ret);
+ return ret;
+ }
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ ret = regmap_update_bits(max9860->regmap, MAX9860_PWRMAN,
+ MAX9860_SHDN, 0);
+ if (ret) {
+ dev_err(component->dev, "Failed to request SHDN: %d\n",
+ ret);
+ return ret;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver max9860_component_driver = {
+ .set_bias_level = max9860_set_bias_level,
+ .controls = max9860_controls,
+ .num_controls = ARRAY_SIZE(max9860_controls),
+ .dapm_widgets = max9860_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(max9860_dapm_widgets),
+ .dapm_routes = max9860_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(max9860_dapm_routes),
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+#ifdef CONFIG_PM
+static int max9860_suspend(struct device *dev)
+{
+ struct max9860_priv *max9860 = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK,
+ MAX9860_PSCLK, MAX9860_PSCLK_OFF);
+ if (ret) {
+ dev_err(dev, "Failed to disable clock: %d\n", ret);
+ return ret;
+ }
+
+ regulator_disable(max9860->dvddio);
+
+ return 0;
+}
+
+static int max9860_resume(struct device *dev)
+{
+ struct max9860_priv *max9860 = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_enable(max9860->dvddio);
+ if (ret) {
+ dev_err(dev, "Failed to enable DVDDIO: %d\n", ret);
+ return ret;
+ }
+
+ regcache_cache_only(max9860->regmap, false);
+ ret = regcache_sync(max9860->regmap);
+ if (ret) {
+ dev_err(dev, "Failed to sync cache: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_update_bits(max9860->regmap, MAX9860_SYSCLK,
+ MAX9860_PSCLK, max9860->psclk);
+ if (ret) {
+ dev_err(dev, "Failed to enable clock: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops max9860_pm_ops = {
+ SET_RUNTIME_PM_OPS(max9860_suspend, max9860_resume, NULL)
+};
+
+static int max9860_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct max9860_priv *max9860;
+ int ret;
+ struct clk *mclk;
+ unsigned long mclk_rate;
+ int i;
+ int intr;
+
+ max9860 = devm_kzalloc(dev, sizeof(struct max9860_priv), GFP_KERNEL);
+ if (!max9860)
+ return -ENOMEM;
+
+ max9860->dvddio = devm_regulator_get(dev, "DVDDIO");
+ if (IS_ERR(max9860->dvddio))
+ return dev_err_probe(dev, PTR_ERR(max9860->dvddio),
+ "Failed to get DVDDIO supply\n");
+
+ max9860->dvddio_nb.notifier_call = max9860_dvddio_event;
+
+ ret = devm_regulator_register_notifier(max9860->dvddio,
+ &max9860->dvddio_nb);
+ if (ret)
+ dev_err(dev, "Failed to register DVDDIO notifier: %d\n", ret);
+
+ ret = regulator_enable(max9860->dvddio);
+ if (ret != 0) {
+ dev_err(dev, "Failed to enable DVDDIO: %d\n", ret);
+ return ret;
+ }
+
+ max9860->regmap = devm_regmap_init_i2c(i2c, &max9860_regmap);
+ if (IS_ERR(max9860->regmap)) {
+ ret = PTR_ERR(max9860->regmap);
+ goto err_regulator;
+ }
+
+ dev_set_drvdata(dev, max9860);
+
+ /*
+ * mclk has to be in the 10MHz to 60MHz range.
+ * psclk is used to scale mclk into pclk so that
+ * pclk is in the 10MHz to 20MHz range.
+ */
+ mclk = clk_get(dev, "mclk");
+
+ if (IS_ERR(mclk)) {
+ ret = PTR_ERR(mclk);
+ dev_err_probe(dev, ret, "Failed to get MCLK\n");
+ goto err_regulator;
+ }
+
+ mclk_rate = clk_get_rate(mclk);
+ clk_put(mclk);
+
+ if (mclk_rate > 60000000 || mclk_rate < 10000000) {
+ dev_err(dev, "Bad mclk %luHz (needs 10MHz - 60MHz)\n",
+ mclk_rate);
+ ret = -EINVAL;
+ goto err_regulator;
+ }
+ if (mclk_rate >= 40000000)
+ max9860->psclk = 3;
+ else if (mclk_rate >= 20000000)
+ max9860->psclk = 2;
+ else
+ max9860->psclk = 1;
+ max9860->pclk_rate = mclk_rate >> (max9860->psclk - 1);
+ max9860->psclk <<= MAX9860_PSCLK_SHIFT;
+ dev_dbg(dev, "mclk %lu pclk %lu\n", mclk_rate, max9860->pclk_rate);
+
+ regcache_cache_bypass(max9860->regmap, true);
+ for (i = 0; i < max9860_regmap.num_reg_defaults; ++i) {
+ ret = regmap_write(max9860->regmap,
+ max9860_regmap.reg_defaults[i].reg,
+ max9860_regmap.reg_defaults[i].def);
+ if (ret) {
+ dev_err(dev, "Failed to initialize register %u: %d\n",
+ max9860_regmap.reg_defaults[i].reg, ret);
+ goto err_regulator;
+ }
+ }
+ regcache_cache_bypass(max9860->regmap, false);
+
+ ret = regmap_read(max9860->regmap, MAX9860_INTRSTATUS, &intr);
+ if (ret) {
+ dev_err(dev, "Failed to clear INTRSTATUS: %d\n", ret);
+ goto err_regulator;
+ }
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_idle(dev);
+
+ ret = devm_snd_soc_register_component(dev, &max9860_component_driver,
+ &max9860_dai, 1);
+ if (ret) {
+ dev_err(dev, "Failed to register CODEC: %d\n", ret);
+ goto err_pm;
+ }
+
+ return 0;
+
+err_pm:
+ pm_runtime_disable(dev);
+err_regulator:
+ regulator_disable(max9860->dvddio);
+ return ret;
+}
+
+static void max9860_remove(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct max9860_priv *max9860 = dev_get_drvdata(dev);
+
+ pm_runtime_disable(dev);
+ regulator_disable(max9860->dvddio);
+}
+
+static const struct i2c_device_id max9860_i2c_id[] = {
+ { "max9860", },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max9860_i2c_id);
+
+static const struct of_device_id max9860_of_match[] = {
+ { .compatible = "maxim,max9860", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, max9860_of_match);
+
+static struct i2c_driver max9860_i2c_driver = {
+ .probe_new = max9860_probe,
+ .remove = max9860_remove,
+ .id_table = max9860_i2c_id,
+ .driver = {
+ .name = "max9860",
+ .of_match_table = max9860_of_match,
+ .pm = &max9860_pm_ops,
+ },
+};
+
+module_i2c_driver(max9860_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC MAX9860 Mono Audio Voice Codec driver");
+MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
+MODULE_LICENSE("GPL v2");