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-rw-r--r--sound/soc/codecs/pcm3168a.c915
1 files changed, 915 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c
new file mode 100644
index 000000000..9d6431338
--- /dev/null
+++ b/sound/soc/codecs/pcm3168a.c
@@ -0,0 +1,915 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * PCM3168A codec driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of_gpio.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)
+
+#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_I2S_TDM 0x6
+#define PCM3168A_FMT_LEFT_J_TDM 0x7
+
+static const char *const pcm3168a_supply_names[] = {
+ "VDD1",
+ "VDD2",
+ "VCCAD1",
+ "VCCAD2",
+ "VCCDA1",
+ "VCCDA2"
+};
+
+#define PCM3168A_DAI_DAC 0
+#define PCM3168A_DAI_ADC 1
+
+/* ADC/DAC side parameters */
+struct pcm3168a_io_params {
+ bool provider_mode;
+ unsigned int format;
+ int tdm_slots;
+ u32 tdm_mask;
+ int slot_width;
+};
+
+struct pcm3168a_priv {
+ struct regulator_bulk_data supplies[ARRAY_SIZE(pcm3168a_supply_names)];
+ struct regmap *regmap;
+ struct clk *scki;
+ struct gpio_desc *gpio_rst;
+ unsigned long sysclk;
+
+ struct pcm3168a_io_params io_params[2];
+ struct snd_soc_dai_driver dai_drv[2];
+};
+
+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_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_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 PCM3168A_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_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
+
+ 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_component_get_drvdata(dai->component);
+ int ret;
+
+ /*
+ * Some sound card sets 0 Hz as reset,
+ * but it is impossible to set. Ignore it here
+ */
+ if (freq == 0)
+ return 0;
+
+ if (freq > PCM3168A_MAX_SYSCLK)
+ return -EINVAL;
+
+ ret = clk_set_rate(pcm3168a->scki, freq);
+ if (ret)
+ return ret;
+
+ pcm3168a->sysclk = freq;
+
+ return 0;
+}
+
+static void pcm3168a_update_fixup_pcm_stream(struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
+ struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
+ u64 formats = SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE;
+ unsigned int channel_max = dai->id == PCM3168A_DAI_DAC ? 8 : 6;
+
+ if (io_params->format == SND_SOC_DAIFMT_RIGHT_J) {
+ /* S16_LE is only supported in RIGHT_J mode */
+ formats |= SNDRV_PCM_FMTBIT_S16_LE;
+
+ /*
+ * If multi DIN/DOUT is not selected, RIGHT_J can only support
+ * two channels (no TDM support)
+ */
+ if (io_params->tdm_slots != 2)
+ channel_max = 2;
+ }
+
+ if (dai->id == PCM3168A_DAI_DAC) {
+ dai->driver->playback.channels_max = channel_max;
+ dai->driver->playback.formats = formats;
+ } else {
+ dai->driver->capture.channels_max = channel_max;
+ dai->driver->capture.formats = formats;
+ }
+}
+
+static int pcm3168a_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
+ struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
+ bool provider_mode;
+
+ switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_LEFT_J:
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_RIGHT_J:
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_DSP_B:
+ break;
+ default:
+ dev_err(component->dev, "unsupported dai format\n");
+ return -EINVAL;
+ }
+
+ switch (format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ provider_mode = false;
+ break;
+ case SND_SOC_DAIFMT_CBP_CFP:
+ provider_mode = true;
+ break;
+ default:
+ dev_err(component->dev, "unsupported provider mode\n");
+ return -EINVAL;
+ }
+
+ switch (format & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ io_params->provider_mode = provider_mode;
+ io_params->format = format & SND_SOC_DAIFMT_FORMAT_MASK;
+
+ pcm3168a_update_fixup_pcm_stream(dai);
+
+ return 0;
+}
+
+static int pcm3168a_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+ unsigned int rx_mask, int slots,
+ int slot_width)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
+ struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
+
+ if (tx_mask >= (1<<slots) || rx_mask >= (1<<slots)) {
+ dev_err(component->dev,
+ "Bad tdm mask tx: 0x%08x rx: 0x%08x slots %d\n",
+ tx_mask, rx_mask, slots);
+ return -EINVAL;
+ }
+
+ if (slot_width &&
+ (slot_width != 16 && slot_width != 24 && slot_width != 32 )) {
+ dev_err(component->dev, "Unsupported slot_width %d\n",
+ slot_width);
+ return -EINVAL;
+ }
+
+ io_params->tdm_slots = slots;
+ io_params->slot_width = slot_width;
+ /* Ignore the not relevant mask for the DAI/direction */
+ if (dai->id == PCM3168A_DAI_DAC)
+ io_params->tdm_mask = tx_mask;
+ else
+ io_params->tdm_mask = rx_mask;
+
+ pcm3168a_update_fixup_pcm_stream(dai);
+
+ return 0;
+}
+
+static int pcm3168a_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 pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
+ struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
+ bool provider_mode, tdm_mode;
+ unsigned int format;
+ unsigned int reg, mask, ms, ms_shift, fmt, fmt_shift, ratio, tdm_slots;
+ int i, num_scki_ratios, slot_width;
+
+ if (dai->id == PCM3168A_DAI_DAC) {
+ num_scki_ratios = PCM3168A_NUM_SCKI_RATIOS_DAC;
+ reg = PCM3168A_DAC_PWR_MST_FMT;
+ mask = PCM3168A_DAC_MSDA_MASK | PCM3168A_DAC_FMT_MASK;
+ ms_shift = PCM3168A_DAC_MSDA_SHIFT;
+ fmt_shift = PCM3168A_DAC_FMT_SHIFT;
+ } else {
+ num_scki_ratios = PCM3168A_NUM_SCKI_RATIOS_ADC;
+ reg = PCM3168A_ADC_MST_FMT;
+ mask = PCM3168A_ADC_MSAD_MASK | PCM3168A_ADC_FMTAD_MASK;
+ ms_shift = PCM3168A_ADC_MSAD_SHIFT;
+ fmt_shift = PCM3168A_ADC_FMTAD_SHIFT;
+ }
+
+ provider_mode = io_params->provider_mode;
+
+ if (provider_mode) {
+ ratio = pcm3168a->sysclk / params_rate(params);
+
+ for (i = 0; i < num_scki_ratios; i++) {
+ if (pcm3168a_scki_ratios[i] == ratio)
+ break;
+ }
+
+ if (i == num_scki_ratios) {
+ dev_err(component->dev, "unsupported sysclk ratio\n");
+ return -EINVAL;
+ }
+
+ ms = (i + 1);
+ } else {
+ ms = 0;
+ }
+
+ format = io_params->format;
+
+ if (io_params->slot_width)
+ slot_width = io_params->slot_width;
+ else
+ slot_width = params_width(params);
+
+ switch (slot_width) {
+ case 16:
+ if (provider_mode || (format != SND_SOC_DAIFMT_RIGHT_J)) {
+ dev_err(component->dev, "16-bit slots are supported only for consumer mode using right justified\n");
+ return -EINVAL;
+ }
+ break;
+ case 24:
+ if (provider_mode || (format == SND_SOC_DAIFMT_DSP_A) ||
+ (format == SND_SOC_DAIFMT_DSP_B)) {
+ dev_err(component->dev, "24-bit slots not supported in provider mode, or consumer mode using DSP\n");
+ return -EINVAL;
+ }
+ break;
+ case 32:
+ break;
+ default:
+ dev_err(component->dev, "unsupported frame size: %d\n", slot_width);
+ return -EINVAL;
+ }
+
+ if (io_params->tdm_slots)
+ tdm_slots = io_params->tdm_slots;
+ else
+ tdm_slots = params_channels(params);
+
+ /*
+ * Switch the codec to TDM mode when more than 2 TDM slots are needed
+ * for the stream.
+ * If pcm3168a->tdm_slots is not set or set to more than 2 (8/6 usually)
+ * then DIN1/DOUT1 is used in TDM mode.
+ * If pcm3168a->tdm_slots is set to 2 then DIN1/2/3/4 and DOUT1/2/3 is
+ * used in normal mode, no need to switch to TDM modes.
+ */
+ tdm_mode = (tdm_slots > 2);
+
+ if (tdm_mode) {
+ switch (format) {
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_DSP_A:
+ case SND_SOC_DAIFMT_LEFT_J:
+ case SND_SOC_DAIFMT_DSP_B:
+ break;
+ default:
+ dev_err(component->dev,
+ "TDM is supported under DSP/I2S/Left_J only\n");
+ return -EINVAL;
+ }
+ }
+
+ switch (format) {
+ case SND_SOC_DAIFMT_I2S:
+ fmt = tdm_mode ? PCM3168A_FMT_I2S_TDM : PCM3168A_FMT_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ fmt = tdm_mode ? PCM3168A_FMT_LEFT_J_TDM : PCM3168A_FMT_LEFT_J;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ fmt = (slot_width == 16) ? PCM3168A_FMT_RIGHT_J_16 :
+ PCM3168A_FMT_RIGHT_J;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ fmt = tdm_mode ? PCM3168A_FMT_I2S_TDM : PCM3168A_FMT_DSP_A;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ fmt = tdm_mode ? PCM3168A_FMT_LEFT_J_TDM : PCM3168A_FMT_DSP_B;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(pcm3168a->regmap, reg, mask,
+ (ms << ms_shift) | (fmt << fmt_shift));
+
+ return 0;
+}
+
+static u64 pcm3168a_dai_formats[] = {
+ /*
+ * Select below from Sound Card, not here
+ * SND_SOC_DAIFMT_CBC_CFC
+ * SND_SOC_DAIFMT_CBP_CFP
+ */
+
+ /*
+ * First Priority
+ */
+ SND_SOC_POSSIBLE_DAIFMT_I2S |
+ SND_SOC_POSSIBLE_DAIFMT_LEFT_J,
+ /*
+ * Second Priority
+ *
+ * These have picky limitation.
+ * see
+ * pcm3168a_hw_params()
+ */
+ SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
+ SND_SOC_POSSIBLE_DAIFMT_DSP_A |
+ SND_SOC_POSSIBLE_DAIFMT_DSP_B,
+};
+
+static const struct snd_soc_dai_ops pcm3168a_dai_ops = {
+ .set_fmt = pcm3168a_set_dai_fmt,
+ .set_sysclk = pcm3168a_set_dai_sysclk,
+ .hw_params = pcm3168a_hw_params,
+ .mute_stream = pcm3168a_mute,
+ .set_tdm_slot = pcm3168a_set_tdm_slot,
+ .no_capture_mute = 1,
+ .auto_selectable_formats = pcm3168a_dai_formats,
+ .num_auto_selectable_formats = ARRAY_SIZE(pcm3168a_dai_formats),
+};
+
+static struct snd_soc_dai_driver pcm3168a_dais[] = {
+ {
+ .name = "pcm3168a-dac",
+ .id = PCM3168A_DAI_DAC,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = PCM3168A_FORMATS
+ },
+ .ops = &pcm3168a_dai_ops
+ },
+ {
+ .name = "pcm3168a-adc",
+ .id = PCM3168A_DAI_ADC,
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 6,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = PCM3168A_FORMATS
+ },
+ .ops = &pcm3168a_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_RST_SMODE:
+ 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_component_driver pcm3168a_driver = {
+ .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),
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+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);
+
+ /*
+ * Request the reset (connected to RST pin) gpio line as non exclusive
+ * as the same reset line might be connected to multiple pcm3168a codec
+ *
+ * The RST is low active, we want the GPIO line to be high initially, so
+ * request the initial level to LOW which in practice means DEASSERTED:
+ * The deasserted level of GPIO_ACTIVE_LOW is HIGH.
+ */
+ pcm3168a->gpio_rst = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_LOW |
+ GPIOD_FLAGS_BIT_NONEXCLUSIVE);
+ if (IS_ERR(pcm3168a->gpio_rst))
+ return dev_err_probe(dev, PTR_ERR(pcm3168a->gpio_rst),
+ "failed to acquire RST gpio\n");
+
+ pcm3168a->scki = devm_clk_get(dev, "scki");
+ if (IS_ERR(pcm3168a->scki))
+ return dev_err_probe(dev, PTR_ERR(pcm3168a->scki),
+ "failed to acquire clock 'scki'\n");
+
+ 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) {
+ dev_err_probe(dev, ret, "failed to request supplies\n");
+ 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;
+ }
+
+ if (pcm3168a->gpio_rst) {
+ /*
+ * The device is taken out from reset via GPIO line, wait for
+ * 3846 SCKI clock cycles for the internal reset de-assertion
+ */
+ msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
+ } else {
+ 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);
+
+ memcpy(pcm3168a->dai_drv, pcm3168a_dais, sizeof(pcm3168a->dai_drv));
+ ret = devm_snd_soc_register_component(dev, &pcm3168a_driver,
+ pcm3168a->dai_drv,
+ ARRAY_SIZE(pcm3168a->dai_drv));
+ if (ret) {
+ dev_err(dev, "failed to register component: %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);
+
+static void pcm3168a_disable(struct device *dev)
+{
+ struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
+
+ regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
+ pcm3168a->supplies);
+ clk_disable_unprepare(pcm3168a->scki);
+}
+
+void pcm3168a_remove(struct device *dev)
+{
+ struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
+
+ /*
+ * The RST is low active, we want the GPIO line to be low when the
+ * driver is removed, so set level to 1 which in practice means
+ * ASSERTED:
+ * The asserted level of GPIO_ACTIVE_LOW is LOW.
+ */
+ gpiod_set_value_cansleep(pcm3168a->gpio_rst, 1);
+ pm_runtime_disable(dev);
+#ifndef CONFIG_PM
+ pcm3168a_disable(dev);
+#endif
+}
+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);
+
+ pcm3168a_disable(dev);
+
+ 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");