--- /dev/null
+/*
+ * PCM3168A codec driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "pcm3168a.h"
+
+#define PCM3168A_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+#define PCM3168A_FMT_I2S 0x0
+#define PCM3168A_FMT_LEFT_J 0x1
+#define PCM3168A_FMT_RIGHT_J 0x2
+#define PCM3168A_FMT_RIGHT_J_16 0x3
+#define PCM3168A_FMT_DSP_A 0x4
+#define PCM3168A_FMT_DSP_B 0x5
+#define PCM3168A_FMT_DSP_MASK 0x4
+
+#define PCM3168A_NUM_SUPPLIES 6
+static const char *const pcm3168a_supply_names[PCM3168A_NUM_SUPPLIES] = {
+ "VDD1",
+ "VDD2",
+ "VCCAD1",
+ "VCCAD2",
+ "VCCDA1",
+ "VCCDA2"
+};
+
+struct pcm3168a_priv {
+ struct regulator_bulk_data supplies[PCM3168A_NUM_SUPPLIES];
+ struct regmap *regmap;
+ struct clk *scki;
+ bool adc_master_mode;
+ bool dac_master_mode;
+ unsigned long sysclk;
+ unsigned int adc_fmt;
+ unsigned int dac_fmt;
+};
+
+static const char *const pcm3168a_roll_off[] = { "Sharp", "Slow" };
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_d1_roll_off, PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_FLT_SHIFT, pcm3168a_roll_off);
+static SOC_ENUM_SINGLE_DECL(pcm3168a_d2_roll_off, PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_FLT_SHIFT + 1, pcm3168a_roll_off);
+static SOC_ENUM_SINGLE_DECL(pcm3168a_d3_roll_off, PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_FLT_SHIFT + 2, pcm3168a_roll_off);
+static SOC_ENUM_SINGLE_DECL(pcm3168a_d4_roll_off, PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_FLT_SHIFT + 3, pcm3168a_roll_off);
+
+static const char *const pcm3168a_volume_type[] = {
+ "Individual", "Master + Individual" };
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_volume_type, PCM3168A_DAC_ATT_DEMP_ZF,
+ PCM3168A_DAC_ATMDDA_SHIFT, pcm3168a_volume_type);
+
+static const char *const pcm3168a_att_speed_mult[] = { "2048", "4096" };
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_att_mult, PCM3168A_DAC_ATT_DEMP_ZF,
+ PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_att_speed_mult);
+
+static const char *const pcm3168a_demp[] = {
+ "Disabled", "48khz", "44.1khz", "32khz" };
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_demp, PCM3168A_DAC_ATT_DEMP_ZF,
+ PCM3168A_DAC_DEMP_SHIFT, pcm3168a_demp);
+
+static const char *const pcm3168a_zf_func[] = {
+ "DAC 1/2/3/4 AND", "DAC 1/2/3/4 OR", "DAC 1/2/3 AND",
+ "DAC 1/2/3 OR", "DAC 4 AND", "DAC 4 OR" };
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_func, PCM3168A_DAC_ATT_DEMP_ZF,
+ PCM3168A_DAC_AZRO_SHIFT, pcm3168a_zf_func);
+
+static const char *const pcm3168a_pol[] = { "Active High", "Active Low" };
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_pol, PCM3168A_DAC_ATT_DEMP_ZF,
+ PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_pol);
+
+static const char *const pcm3168a_con[] = { "Differential", "Single-Ended" };
+
+static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc1_con, PCM3168A_ADC_SEAD,
+ 0, 1, pcm3168a_con);
+static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc2_con, PCM3168A_ADC_SEAD,
+ 2, 3, pcm3168a_con);
+static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc3_con, PCM3168A_ADC_SEAD,
+ 4, 5, pcm3168a_con);
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_volume_type, PCM3168A_ADC_ATT_OVF,
+ PCM3168A_ADC_ATMDAD_SHIFT, pcm3168a_volume_type);
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_att_mult, PCM3168A_ADC_ATT_OVF,
+ PCM3168A_ADC_ATSPAD_SHIFT, pcm3168a_att_speed_mult);
+
+static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_ov_pol, PCM3168A_ADC_ATT_OVF,
+ PCM3168A_ADC_OVFP_SHIFT, pcm3168a_pol);
+
+/* -100db to 0db, register values 0-54 cause mute */
+static const DECLARE_TLV_DB_SCALE(pcm3168a_dac_tlv, -10050, 50, 1);
+
+/* -100db to 20db, register values 0-14 cause mute */
+static const DECLARE_TLV_DB_SCALE(pcm3168a_adc_tlv, -10050, 50, 1);
+
+static const struct snd_kcontrol_new pcm3168a_snd_controls[] = {
+ SOC_SINGLE("DAC Power-Save Switch", PCM3168A_DAC_PWR_MST_FMT,
+ PCM3168A_DAC_PSMDA_SHIFT, 1, 1),
+ SOC_ENUM("DAC1 Digital Filter roll-off", pcm3168a_d1_roll_off),
+ SOC_ENUM("DAC2 Digital Filter roll-off", pcm3168a_d2_roll_off),
+ SOC_ENUM("DAC3 Digital Filter roll-off", pcm3168a_d3_roll_off),
+ SOC_ENUM("DAC4 Digital Filter roll-off", pcm3168a_d4_roll_off),
+ SOC_DOUBLE("DAC1 Invert Switch", PCM3168A_DAC_INV, 0, 1, 1, 0),
+ SOC_DOUBLE("DAC2 Invert Switch", PCM3168A_DAC_INV, 2, 3, 1, 0),
+ SOC_DOUBLE("DAC3 Invert Switch", PCM3168A_DAC_INV, 4, 5, 1, 0),
+ SOC_DOUBLE("DAC4 Invert Switch", PCM3168A_DAC_INV, 6, 7, 1, 0),
+ SOC_DOUBLE_STS("DAC1 Zero Flag", PCM3168A_DAC_ZERO, 0, 1, 1, 0),
+ SOC_DOUBLE_STS("DAC2 Zero Flag", PCM3168A_DAC_ZERO, 2, 3, 1, 0),
+ SOC_DOUBLE_STS("DAC3 Zero Flag", PCM3168A_DAC_ZERO, 4, 5, 1, 0),
+ SOC_DOUBLE_STS("DAC4 Zero Flag", PCM3168A_DAC_ZERO, 6, 7, 1, 0),
+ SOC_ENUM("DAC Volume Control Type", pcm3168a_dac_volume_type),
+ SOC_ENUM("DAC Volume Rate Multiplier", pcm3168a_dac_att_mult),
+ SOC_ENUM("DAC De-Emphasis", pcm3168a_dac_demp),
+ SOC_ENUM("DAC Zero Flag Function", pcm3168a_dac_zf_func),
+ SOC_ENUM("DAC Zero Flag Polarity", pcm3168a_dac_zf_pol),
+ SOC_SINGLE_RANGE_TLV("Master Playback Volume",
+ PCM3168A_DAC_VOL_MASTER, 0, 54, 255, 0,
+ pcm3168a_dac_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("DAC1 Playback Volume",
+ PCM3168A_DAC_VOL_CHAN_START,
+ PCM3168A_DAC_VOL_CHAN_START + 1,
+ 0, 54, 255, 0, pcm3168a_dac_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("DAC2 Playback Volume",
+ PCM3168A_DAC_VOL_CHAN_START + 2,
+ PCM3168A_DAC_VOL_CHAN_START + 3,
+ 0, 54, 255, 0, pcm3168a_dac_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("DAC3 Playback Volume",
+ PCM3168A_DAC_VOL_CHAN_START + 4,
+ PCM3168A_DAC_VOL_CHAN_START + 5,
+ 0, 54, 255, 0, pcm3168a_dac_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("DAC4 Playback Volume",
+ PCM3168A_DAC_VOL_CHAN_START + 6,
+ PCM3168A_DAC_VOL_CHAN_START + 7,
+ 0, 54, 255, 0, pcm3168a_dac_tlv),
+ SOC_SINGLE("ADC1 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
+ PCM3168A_ADC_BYP_SHIFT, 1, 1),
+ SOC_SINGLE("ADC2 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
+ PCM3168A_ADC_BYP_SHIFT + 1, 1, 1),
+ SOC_SINGLE("ADC3 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
+ PCM3168A_ADC_BYP_SHIFT + 2, 1, 1),
+ SOC_ENUM("ADC1 Connection Type", pcm3168a_adc1_con),
+ SOC_ENUM("ADC2 Connection Type", pcm3168a_adc2_con),
+ SOC_ENUM("ADC3 Connection Type", pcm3168a_adc3_con),
+ SOC_DOUBLE("ADC1 Invert Switch", PCM3168A_ADC_INV, 0, 1, 1, 0),
+ SOC_DOUBLE("ADC2 Invert Switch", PCM3168A_ADC_INV, 2, 3, 1, 0),
+ SOC_DOUBLE("ADC3 Invert Switch", PCM3168A_ADC_INV, 4, 5, 1, 0),
+ SOC_DOUBLE("ADC1 Mute Switch", PCM3168A_ADC_MUTE, 0, 1, 1, 0),
+ SOC_DOUBLE("ADC2 Mute Switch", PCM3168A_ADC_MUTE, 2, 3, 1, 0),
+ SOC_DOUBLE("ADC3 Mute Switch", PCM3168A_ADC_MUTE, 4, 5, 1, 0),
+ SOC_DOUBLE_STS("ADC1 Overflow Flag", PCM3168A_ADC_OV, 0, 1, 1, 0),
+ SOC_DOUBLE_STS("ADC2 Overflow Flag", PCM3168A_ADC_OV, 2, 3, 1, 0),
+ SOC_DOUBLE_STS("ADC3 Overflow Flag", PCM3168A_ADC_OV, 4, 5, 1, 0),
+ SOC_ENUM("ADC Volume Control Type", pcm3168a_adc_volume_type),
+ SOC_ENUM("ADC Volume Rate Multiplier", pcm3168a_adc_att_mult),
+ SOC_ENUM("ADC Overflow Flag Polarity", pcm3168a_adc_ov_pol),
+ SOC_SINGLE_RANGE_TLV("Master Capture Volume",
+ PCM3168A_ADC_VOL_MASTER, 0, 14, 255, 0,
+ pcm3168a_adc_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("ADC1 Capture Volume",
+ PCM3168A_ADC_VOL_CHAN_START,
+ PCM3168A_ADC_VOL_CHAN_START + 1,
+ 0, 14, 255, 0, pcm3168a_adc_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("ADC2 Capture Volume",
+ PCM3168A_ADC_VOL_CHAN_START + 2,
+ PCM3168A_ADC_VOL_CHAN_START + 3,
+ 0, 14, 255, 0, pcm3168a_adc_tlv),
+ SOC_DOUBLE_R_RANGE_TLV("ADC3 Capture Volume",
+ PCM3168A_ADC_VOL_CHAN_START + 4,
+ PCM3168A_ADC_VOL_CHAN_START + 5,
+ 0, 14, 255, 0, pcm3168a_adc_tlv)
+};
+
+static const struct snd_soc_dapm_widget pcm3168a_dapm_widgets[] = {
+ SND_SOC_DAPM_DAC("DAC1", "Playback", PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_OPEDA_SHIFT, 1),
+ SND_SOC_DAPM_DAC("DAC2", "Playback", PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_OPEDA_SHIFT + 1, 1),
+ SND_SOC_DAPM_DAC("DAC3", "Playback", PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_OPEDA_SHIFT + 2, 1),
+ SND_SOC_DAPM_DAC("DAC4", "Playback", PCM3168A_DAC_OP_FLT,
+ PCM3168A_DAC_OPEDA_SHIFT + 3, 1),
+
+ SND_SOC_DAPM_OUTPUT("AOUT1L"),
+ SND_SOC_DAPM_OUTPUT("AOUT1R"),
+ SND_SOC_DAPM_OUTPUT("AOUT2L"),
+ SND_SOC_DAPM_OUTPUT("AOUT2R"),
+ SND_SOC_DAPM_OUTPUT("AOUT3L"),
+ SND_SOC_DAPM_OUTPUT("AOUT3R"),
+ SND_SOC_DAPM_OUTPUT("AOUT4L"),
+ SND_SOC_DAPM_OUTPUT("AOUT4R"),
+
+ SND_SOC_DAPM_ADC("ADC1", "Capture", PCM3168A_ADC_PWR_HPFB,
+ PCM3168A_ADC_PSVAD_SHIFT, 1),
+ SND_SOC_DAPM_ADC("ADC2", "Capture", PCM3168A_ADC_PWR_HPFB,
+ PCM3168A_ADC_PSVAD_SHIFT + 1, 1),
+ SND_SOC_DAPM_ADC("ADC3", "Capture", PCM3168A_ADC_PWR_HPFB,
+ PCM3168A_ADC_PSVAD_SHIFT + 2, 1),
+
+ SND_SOC_DAPM_INPUT("AIN1L"),
+ SND_SOC_DAPM_INPUT("AIN1R"),
+ SND_SOC_DAPM_INPUT("AIN2L"),
+ SND_SOC_DAPM_INPUT("AIN2R"),
+ SND_SOC_DAPM_INPUT("AIN3L"),
+ SND_SOC_DAPM_INPUT("AIN3R")
+};
+
+static const struct snd_soc_dapm_route pcm3168a_dapm_routes[] = {
+ /* Playback */
+ { "AOUT1L", NULL, "DAC1" },
+ { "AOUT1R", NULL, "DAC1" },
+
+ { "AOUT2L", NULL, "DAC2" },
+ { "AOUT2R", NULL, "DAC2" },
+
+ { "AOUT3L", NULL, "DAC3" },
+ { "AOUT3R", NULL, "DAC3" },
+
+ { "AOUT4L", NULL, "DAC4" },
+ { "AOUT4R", NULL, "DAC4" },
+
+ /* Capture */
+ { "ADC1", NULL, "AIN1L" },
+ { "ADC1", NULL, "AIN1R" },
+
+ { "ADC2", NULL, "AIN2L" },
+ { "ADC2", NULL, "AIN2R" },
+
+ { "ADC3", NULL, "AIN3L" },
+ { "ADC3", NULL, "AIN3R" }
+};
+
+static unsigned int pcm3168a_scki_ratios[] = {
+ 768,
+ 512,
+ 384,
+ 256,
+ 192,
+ 128
+};
+
+#define PCM3168A_NUM_SCKI_RATIOS_DAC ARRAY_SIZE(pcm3168a_scki_ratios)
+#define PCM3168A_NUM_SCKI_RATIOS_ADC (ARRAY_SIZE(pcm3168a_scki_ratios) - 2)
+
+#define PCM1368A_MAX_SYSCLK 36864000
+
+static int pcm3168a_reset(struct pcm3168a_priv *pcm3168a)
+{
+ int ret;
+
+ ret = regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE, 0);
+ if (ret)
+ return ret;
+
+ /* Internal reset is de-asserted after 3846 SCKI cycles */
+ msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
+
+ return regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE,
+ PCM3168A_MRST_MASK | PCM3168A_SRST_MASK);
+}
+
+static int pcm3168a_digital_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
+
+ regmap_write(pcm3168a->regmap, PCM3168A_DAC_MUTE, mute ? 0xff : 0);
+
+ return 0;
+}
+
+static int pcm3168a_set_dai_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(dai->codec);
+
+ if (freq > PCM1368A_MAX_SYSCLK)
+ return -EINVAL;
+
+ pcm3168a->sysclk = freq;
+
+ return 0;
+}
+
+static int pcm3168a_set_dai_fmt(struct snd_soc_dai *dai,
+ unsigned int format, bool dac)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
+ u32 fmt, reg, mask, shift;
+ bool master_mode;
+
+ switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_LEFT_J:
+ fmt = PCM3168A_FMT_LEFT_J;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ fmt = PCM3168A_FMT_I2S;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ fmt = PCM3168A_FMT_RIGHT_J;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ fmt = PCM3168A_FMT_DSP_A;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ fmt = PCM3168A_FMT_DSP_B;
+ break;
+ default:
+ dev_err(codec->dev, "unsupported dai format\n");
+ return -EINVAL;
+ }
+
+ switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ master_mode = false;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ master_mode = true;
+ break;
+ default:
+ dev_err(codec->dev, "unsupported master/slave mode\n");
+ return -EINVAL;
+ }
+
+ switch (format & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (dac) {
+ reg = PCM3168A_DAC_PWR_MST_FMT;
+ mask = PCM3168A_DAC_FMT_MASK;
+ shift = PCM3168A_DAC_FMT_SHIFT;
+ pcm3168a->dac_master_mode = master_mode;
+ pcm3168a->dac_fmt = fmt;
+ } else {
+ reg = PCM3168A_ADC_MST_FMT;
+ mask = PCM3168A_ADC_FMTAD_MASK;
+ shift = PCM3168A_ADC_FMTAD_SHIFT;
+ pcm3168a->adc_master_mode = master_mode;
+ pcm3168a->adc_fmt = fmt;
+ }
+
+ regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
+
+ return 0;
+}
+
+static int pcm3168a_set_dai_fmt_dac(struct snd_soc_dai *dai,
+ unsigned int format)
+{
+ return pcm3168a_set_dai_fmt(dai, format, true);
+}
+
+static int pcm3168a_set_dai_fmt_adc(struct snd_soc_dai *dai,
+ unsigned int format)
+{
+ return pcm3168a_set_dai_fmt(dai, format, false);
+}
+
+static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
+ bool tx, master_mode;
+ u32 val, mask, shift, reg;
+ unsigned int rate, channels, fmt, ratio, max_ratio;
+ int i, min_frame_size;
+ snd_pcm_format_t format;
+
+ rate = params_rate(params);
+ format = params_format(params);
+ channels = params_channels(params);
+
+ ratio = pcm3168a->sysclk / rate;
+
+ tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ if (tx) {
+ max_ratio = PCM3168A_NUM_SCKI_RATIOS_DAC;
+ reg = PCM3168A_DAC_PWR_MST_FMT;
+ mask = PCM3168A_DAC_MSDA_MASK;
+ shift = PCM3168A_DAC_MSDA_SHIFT;
+ master_mode = pcm3168a->dac_master_mode;
+ fmt = pcm3168a->dac_fmt;
+ } else {
+ max_ratio = PCM3168A_NUM_SCKI_RATIOS_ADC;
+ reg = PCM3168A_ADC_MST_FMT;
+ mask = PCM3168A_ADC_MSAD_MASK;
+ shift = PCM3168A_ADC_MSAD_SHIFT;
+ master_mode = pcm3168a->adc_master_mode;
+ fmt = pcm3168a->adc_fmt;
+ }
+
+ for (i = 0; i < max_ratio; i++) {
+ if (pcm3168a_scki_ratios[i] == ratio)
+ break;
+ }
+
+ if (i == max_ratio) {
+ dev_err(codec->dev, "unsupported sysclk ratio\n");
+ return -EINVAL;
+ }
+
+ min_frame_size = params_width(params) * 2;
+ switch (min_frame_size) {
+ case 32:
+ if (master_mode || (fmt != PCM3168A_FMT_RIGHT_J)) {
+ dev_err(codec->dev, "32-bit frames are supported only for slave mode using right justified\n");
+ return -EINVAL;
+ }
+ fmt = PCM3168A_FMT_RIGHT_J_16;
+ break;
+ case 48:
+ if (master_mode || (fmt & PCM3168A_FMT_DSP_MASK)) {
+ dev_err(codec->dev, "48-bit frames not supported in master mode, or slave mode using DSP\n");
+ return -EINVAL;
+ }
+ break;
+ case 64:
+ break;
+ default:
+ dev_err(codec->dev, "unsupported frame size: %d\n", min_frame_size);
+ return -EINVAL;
+ }
+
+ if (master_mode)
+ val = ((i + 1) << shift);
+ else
+ val = 0;
+
+ regmap_update_bits(pcm3168a->regmap, reg, mask, val);
+
+ if (tx) {
+ mask = PCM3168A_DAC_FMT_MASK;
+ shift = PCM3168A_DAC_FMT_SHIFT;
+ } else {
+ mask = PCM3168A_ADC_FMTAD_MASK;
+ shift = PCM3168A_ADC_FMTAD_SHIFT;
+ }
+
+ regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = {
+ .set_fmt = pcm3168a_set_dai_fmt_dac,
+ .set_sysclk = pcm3168a_set_dai_sysclk,
+ .hw_params = pcm3168a_hw_params,
+ .digital_mute = pcm3168a_digital_mute
+};
+
+static const struct snd_soc_dai_ops pcm3168a_adc_dai_ops = {
+ .set_fmt = pcm3168a_set_dai_fmt_adc,
+ .set_sysclk = pcm3168a_set_dai_sysclk,
+ .hw_params = pcm3168a_hw_params
+};
+
+static struct snd_soc_dai_driver pcm3168a_dais[] = {
+ {
+ .name = "pcm3168a-dac",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = PCM3168A_FORMATS
+ },
+ .ops = &pcm3168a_dac_dai_ops
+ },
+ {
+ .name = "pcm3168a-adc",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 6,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = PCM3168A_FORMATS
+ },
+ .ops = &pcm3168a_adc_dai_ops
+ },
+};
+
+static const struct reg_default pcm3168a_reg_default[] = {
+ { PCM3168A_RST_SMODE, PCM3168A_MRST_MASK | PCM3168A_SRST_MASK },
+ { PCM3168A_DAC_PWR_MST_FMT, 0x00 },
+ { PCM3168A_DAC_OP_FLT, 0x00 },
+ { PCM3168A_DAC_INV, 0x00 },
+ { PCM3168A_DAC_MUTE, 0x00 },
+ { PCM3168A_DAC_ZERO, 0x00 },
+ { PCM3168A_DAC_ATT_DEMP_ZF, 0x00 },
+ { PCM3168A_DAC_VOL_MASTER, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 1, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 2, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 3, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 4, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 5, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 6, 0xff },
+ { PCM3168A_DAC_VOL_CHAN_START + 7, 0xff },
+ { PCM3168A_ADC_SMODE, 0x00 },
+ { PCM3168A_ADC_MST_FMT, 0x00 },
+ { PCM3168A_ADC_PWR_HPFB, 0x00 },
+ { PCM3168A_ADC_SEAD, 0x00 },
+ { PCM3168A_ADC_INV, 0x00 },
+ { PCM3168A_ADC_MUTE, 0x00 },
+ { PCM3168A_ADC_OV, 0x00 },
+ { PCM3168A_ADC_ATT_OVF, 0x00 },
+ { PCM3168A_ADC_VOL_MASTER, 0xd3 },
+ { PCM3168A_ADC_VOL_CHAN_START, 0xd3 },
+ { PCM3168A_ADC_VOL_CHAN_START + 1, 0xd3 },
+ { PCM3168A_ADC_VOL_CHAN_START + 2, 0xd3 },
+ { PCM3168A_ADC_VOL_CHAN_START + 3, 0xd3 },
+ { PCM3168A_ADC_VOL_CHAN_START + 4, 0xd3 },
+ { PCM3168A_ADC_VOL_CHAN_START + 5, 0xd3 }
+};
+
+static bool pcm3168a_readable_register(struct device *dev, unsigned int reg)
+{
+ if (reg >= PCM3168A_RST_SMODE)
+ return true;
+ else
+ return false;
+}
+
+static bool pcm3168a_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case PCM3168A_DAC_ZERO:
+ case PCM3168A_ADC_OV:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool pcm3168a_writeable_register(struct device *dev, unsigned int reg)
+{
+ if (reg < PCM3168A_RST_SMODE)
+ return false;
+
+ switch (reg) {
+ case PCM3168A_DAC_ZERO:
+ case PCM3168A_ADC_OV:
+ return false;
+ default:
+ return true;
+ }
+}
+
+const struct regmap_config pcm3168a_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = PCM3168A_ADC_VOL_CHAN_START + 5,
+ .reg_defaults = pcm3168a_reg_default,
+ .num_reg_defaults = ARRAY_SIZE(pcm3168a_reg_default),
+ .readable_reg = pcm3168a_readable_register,
+ .volatile_reg = pcm3168a_volatile_register,
+ .writeable_reg = pcm3168a_writeable_register,
+ .cache_type = REGCACHE_FLAT
+};
+EXPORT_SYMBOL_GPL(pcm3168a_regmap);
+
+static const struct snd_soc_codec_driver pcm3168a_driver = {
+ .idle_bias_off = true,
+ .controls = pcm3168a_snd_controls,
+ .num_controls = ARRAY_SIZE(pcm3168a_snd_controls),
+ .dapm_widgets = pcm3168a_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(pcm3168a_dapm_widgets),
+ .dapm_routes = pcm3168a_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(pcm3168a_dapm_routes)
+};
+
+int pcm3168a_probe(struct device *dev, struct regmap *regmap)
+{
+ struct pcm3168a_priv *pcm3168a;
+ int ret, i;
+
+ pcm3168a = devm_kzalloc(dev, sizeof(*pcm3168a), GFP_KERNEL);
+ if (pcm3168a == NULL)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, pcm3168a);
+
+ pcm3168a->scki = devm_clk_get(dev, "scki");
+ if (IS_ERR(pcm3168a->scki)) {
+ ret = PTR_ERR(pcm3168a->scki);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "failed to acquire clock 'scki': %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(pcm3168a->scki);
+ if (ret) {
+ dev_err(dev, "Failed to enable mclk: %d\n", ret);
+ return ret;
+ }
+
+ pcm3168a->sysclk = clk_get_rate(pcm3168a->scki);
+
+ for (i = 0; i < ARRAY_SIZE(pcm3168a->supplies); i++)
+ pcm3168a->supplies[i].supply = pcm3168a_supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev,
+ ARRAY_SIZE(pcm3168a->supplies), pcm3168a->supplies);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "failed to request supplies: %d\n", ret);
+ goto err_clk;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+ if (ret) {
+ dev_err(dev, "failed to enable supplies: %d\n", ret);
+ goto err_clk;
+ }
+
+ pcm3168a->regmap = regmap;
+ if (IS_ERR(pcm3168a->regmap)) {
+ ret = PTR_ERR(pcm3168a->regmap);
+ dev_err(dev, "failed to allocate regmap: %d\n", ret);
+ goto err_regulator;
+ }
+
+ ret = pcm3168a_reset(pcm3168a);
+ if (ret) {
+ dev_err(dev, "Failed to reset device: %d\n", ret);
+ goto err_regulator;
+ }
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_idle(dev);
+
+ ret = snd_soc_register_codec(dev, &pcm3168a_driver, pcm3168a_dais,
+ ARRAY_SIZE(pcm3168a_dais));
+ if (ret) {
+ dev_err(dev, "failed to register codec: %d\n", ret);
+ goto err_regulator;
+ }
+
+ return 0;
+
+err_regulator:
+ regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+err_clk:
+ clk_disable_unprepare(pcm3168a->scki);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pcm3168a_probe);
+
+void pcm3168a_remove(struct device *dev)
+{
+ struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
+
+ snd_soc_unregister_codec(dev);
+ pm_runtime_disable(dev);
+ regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+ clk_disable_unprepare(pcm3168a->scki);
+}
+EXPORT_SYMBOL_GPL(pcm3168a_remove);
+
+#ifdef CONFIG_PM
+static int pcm3168a_rt_resume(struct device *dev)
+{
+ struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(pcm3168a->scki);
+ if (ret) {
+ dev_err(dev, "Failed to enable mclk: %d\n", ret);
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+ if (ret) {
+ dev_err(dev, "Failed to enable supplies: %d\n", ret);
+ goto err_clk;
+ }
+
+ ret = pcm3168a_reset(pcm3168a);
+ if (ret) {
+ dev_err(dev, "Failed to reset device: %d\n", ret);
+ goto err_regulator;
+ }
+
+ regcache_cache_only(pcm3168a->regmap, false);
+
+ regcache_mark_dirty(pcm3168a->regmap);
+
+ ret = regcache_sync(pcm3168a->regmap);
+ if (ret) {
+ dev_err(dev, "Failed to sync regmap: %d\n", ret);
+ goto err_regulator;
+ }
+
+ return 0;
+
+err_regulator:
+ regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+err_clk:
+ clk_disable_unprepare(pcm3168a->scki);
+
+ return ret;
+}
+
+static int pcm3168a_rt_suspend(struct device *dev)
+{
+ struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
+
+ regcache_cache_only(pcm3168a->regmap, true);
+
+ regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+
+ clk_disable_unprepare(pcm3168a->scki);
+
+ return 0;
+}
+#endif
+
+const struct dev_pm_ops pcm3168a_pm_ops = {
+ SET_RUNTIME_PM_OPS(pcm3168a_rt_suspend, pcm3168a_rt_resume, NULL)
+};
+EXPORT_SYMBOL_GPL(pcm3168a_pm_ops);
+
+MODULE_DESCRIPTION("PCM3168A codec driver");
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_LICENSE("GPL v2");
projects / platform / kernel / linux-rpi.git / commitdiff