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@@ -0,0 +1,707 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * ALSA SoC Texas Instruments TAS6424 Quad-Channel Audio Amplifier
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+ *
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+ * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
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+ * Author: Andreas Dannenberg <dannenberg@ti.com>
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+ * Andrew F. Davis <afd@ti.com>
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/errno.h>
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+#include <linux/device.h>
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+#include <linux/i2c.h>
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+#include <linux/pm_runtime.h>
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+#include <linux/regmap.h>
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+#include <linux/slab.h>
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+#include <linux/regulator/consumer.h>
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+#include <linux/delay.h>
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+
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+#include <sound/pcm.h>
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+#include <sound/pcm_params.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dapm.h>
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+#include <sound/tlv.h>
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+
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+#include "tas6424.h"
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+
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+/* Define how often to check (and clear) the fault status register (in ms) */
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+#define TAS6424_FAULT_CHECK_INTERVAL 200
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+
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+static const char * const tas6424_supply_names[] = {
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+ "dvdd", /* Digital power supply. Connect to 3.3-V supply. */
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+ "vbat", /* Supply used for higher voltage analog circuits. */
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+ "pvdd", /* Class-D amp output FETs supply. */
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+};
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+#define TAS6424_NUM_SUPPLIES ARRAY_SIZE(tas6424_supply_names)
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+
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+struct tas6424_data {
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+ struct device *dev;
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+ struct regmap *regmap;
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+ struct regulator_bulk_data supplies[TAS6424_NUM_SUPPLIES];
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+ struct delayed_work fault_check_work;
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+ unsigned int last_fault1;
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+ unsigned int last_fault2;
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+ unsigned int last_warn;
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+};
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+
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+/*
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+ * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that
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+ * setting the gain below -100 dB (register value <0x7) is effectively a MUTE
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+ * as per device datasheet.
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+ */
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+static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0);
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+
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+static const struct snd_kcontrol_new tas6424_snd_controls[] = {
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+ SOC_SINGLE_TLV("Speaker Driver CH1 Playback Volume",
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+ TAS6424_CH1_VOL_CTRL, 0, 0xff, 0, dac_tlv),
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+ SOC_SINGLE_TLV("Speaker Driver CH2 Playback Volume",
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+ TAS6424_CH2_VOL_CTRL, 0, 0xff, 0, dac_tlv),
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+ SOC_SINGLE_TLV("Speaker Driver CH3 Playback Volume",
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+ TAS6424_CH3_VOL_CTRL, 0, 0xff, 0, dac_tlv),
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+ SOC_SINGLE_TLV("Speaker Driver CH4 Playback Volume",
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+ TAS6424_CH4_VOL_CTRL, 0, 0xff, 0, dac_tlv),
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+};
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+
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+static int tas6424_dac_event(struct snd_soc_dapm_widget *w,
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+ struct snd_kcontrol *kcontrol, int event)
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+{
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+ struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
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+ struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec);
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+
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+ dev_dbg(codec->dev, "%s() event=0x%0x\n", __func__, event);
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+
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+ if (event & SND_SOC_DAPM_POST_PMU) {
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+ /* Observe codec shutdown-to-active time */
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+ msleep(12);
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+
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+ /* Turn on TAS6424 periodic fault checking/handling */
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+ tas6424->last_fault1 = 0;
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+ tas6424->last_fault2 = 0;
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+ tas6424->last_warn = 0;
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+ schedule_delayed_work(&tas6424->fault_check_work,
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+ msecs_to_jiffies(TAS6424_FAULT_CHECK_INTERVAL));
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+ } else if (event & SND_SOC_DAPM_PRE_PMD) {
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+ /* Disable TAS6424 periodic fault checking/handling */
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+ cancel_delayed_work_sync(&tas6424->fault_check_work);
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+ }
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+
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+ return 0;
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+}
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+
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+static const struct snd_soc_dapm_widget tas6424_dapm_widgets[] = {
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+ SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
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+ SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas6424_dac_event,
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+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
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+ SND_SOC_DAPM_OUTPUT("OUT")
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+};
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+
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+static const struct snd_soc_dapm_route tas6424_audio_map[] = {
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+ { "DAC", NULL, "DAC IN" },
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+ { "OUT", NULL, "DAC" },
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+};
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+
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+static int tas6424_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params,
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+ struct snd_soc_dai *dai)
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+{
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+ struct snd_soc_codec *codec = dai->codec;
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+ unsigned int rate = params_rate(params);
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+ unsigned int width = params_width(params);
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+ u8 sap_ctrl = 0;
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+
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+ dev_dbg(codec->dev, "%s() rate=%u width=%u\n", __func__, rate, width);
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+
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+ switch (rate) {
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+ case 44100:
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+ sap_ctrl |= TAS6424_SAP_RATE_44100;
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+ break;
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+ case 48000:
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+ sap_ctrl |= TAS6424_SAP_RATE_48000;
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+ break;
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+ case 96000:
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+ sap_ctrl |= TAS6424_SAP_RATE_96000;
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+ break;
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+ default:
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+ dev_err(codec->dev, "unsupported sample rate: %u\n", rate);
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+ return -EINVAL;
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+ }
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+
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+ switch (width) {
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+ case 16:
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+ sap_ctrl |= TAS6424_SAP_TDM_SLOT_SZ_16;
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+ break;
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+ case 24:
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+ break;
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+ default:
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+ dev_err(codec->dev, "unsupported sample width: %u\n", width);
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+ return -EINVAL;
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+ }
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+
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+ snd_soc_update_bits(codec, TAS6424_SAP_CTRL,
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+ TAS6424_SAP_RATE_MASK |
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+ TAS6424_SAP_TDM_SLOT_SZ_16,
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+ sap_ctrl);
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+
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+ return 0;
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+}
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+
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+static int tas6424_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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+{
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+ struct snd_soc_codec *codec = dai->codec;
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+ u8 serial_format = 0;
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+
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+ dev_dbg(codec->dev, "%s() fmt=0x%0x\n", __func__, fmt);
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+
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+ /* clock masters */
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+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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+ case SND_SOC_DAIFMT_CBS_CFS:
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+ break;
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+ default:
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+ dev_err(codec->dev, "Invalid DAI master/slave interface\n");
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+ return -EINVAL;
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+ }
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+
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+ /* signal polarity */
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+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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+ case SND_SOC_DAIFMT_NB_NF:
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+ break;
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+ default:
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+ dev_err(codec->dev, "Invalid DAI clock signal polarity\n");
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+ return -EINVAL;
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+ }
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+
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+ /* interface format */
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+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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+ case SND_SOC_DAIFMT_I2S:
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+ serial_format |= TAS6424_SAP_I2S;
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+ break;
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+ case SND_SOC_DAIFMT_DSP_A:
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+ serial_format |= TAS6424_SAP_DSP;
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+ break;
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+ case SND_SOC_DAIFMT_DSP_B:
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+ /*
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+ * We can use the fact that the TAS6424 does not care about the
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+ * LRCLK duty cycle during TDM to receive DSP_B formatted data
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+ * in LEFTJ mode (no delaying of the 1st data bit).
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+ */
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+ serial_format |= TAS6424_SAP_LEFTJ;
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+ break;
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+ case SND_SOC_DAIFMT_LEFT_J:
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+ serial_format |= TAS6424_SAP_LEFTJ;
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+ break;
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+ default:
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+ dev_err(codec->dev, "Invalid DAI interface format\n");
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+ return -EINVAL;
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+ }
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+
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+ snd_soc_update_bits(codec, TAS6424_SAP_CTRL,
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+ TAS6424_SAP_FMT_MASK, serial_format);
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+
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+ return 0;
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+}
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+
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+static int tas6424_set_dai_tdm_slot(struct snd_soc_dai *dai,
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+ unsigned int tx_mask, unsigned int rx_mask,
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+ int slots, int slot_width)
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+{
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+ struct snd_soc_codec *codec = dai->codec;
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+ unsigned int first_slot, last_slot;
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+ bool sap_tdm_slot_last;
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+
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+ dev_dbg(codec->dev, "%s() tx_mask=%d rx_mask=%d\n", __func__,
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+ tx_mask, rx_mask);
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+
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+ if (!tx_mask || !rx_mask)
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+ return 0; /* nothing needed to disable TDM mode */
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+
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+ /*
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+ * Determine the first slot and last slot that is being requested so
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+ * we'll be able to more easily enforce certain constraints as the
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+ * TAS6424's TDM interface is not fully configurable.
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+ */
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+ first_slot = __ffs(tx_mask);
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+ last_slot = __fls(rx_mask);
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+
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+ if (last_slot - first_slot != 4) {
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+ dev_err(codec->dev, "tdm mask must cover 4 contiguous slots\n");
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+ return -EINVAL;
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+ }
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+
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+ switch (first_slot) {
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+ case 0:
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+ sap_tdm_slot_last = false;
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+ break;
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+ case 4:
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+ sap_tdm_slot_last = true;
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+ break;
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+ default:
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+ dev_err(codec->dev, "tdm mask must start at slot 0 or 4\n");
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+ return -EINVAL;
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+ }
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+
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+ snd_soc_update_bits(codec, TAS6424_SAP_CTRL, TAS6424_SAP_TDM_SLOT_LAST,
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+ sap_tdm_slot_last ? TAS6424_SAP_TDM_SLOT_LAST : 0);
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+
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+ return 0;
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+}
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+
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+static int tas6424_mute(struct snd_soc_dai *dai, int mute)
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+{
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+ struct snd_soc_codec *codec = dai->codec;
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+ unsigned int val;
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+
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+ dev_dbg(codec->dev, "%s() mute=%d\n", __func__, mute);
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+
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+ if (mute)
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+ val = TAS6424_ALL_STATE_MUTE;
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+ else
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+ val = TAS6424_ALL_STATE_PLAY;
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+
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+ snd_soc_write(codec, TAS6424_CH_STATE_CTRL, val);
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+
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+ return 0;
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+}
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+
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+static int tas6424_power_off(struct snd_soc_codec *codec)
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+{
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+ struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec);
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+ int ret;
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+
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+ snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_HIZ);
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+
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+ regcache_cache_only(tas6424->regmap, true);
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+ regcache_mark_dirty(tas6424->regmap);
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+
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+ ret = regulator_bulk_disable(ARRAY_SIZE(tas6424->supplies),
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+ tas6424->supplies);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "failed to disable supplies: %d\n", ret);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+static int tas6424_power_on(struct snd_soc_codec *codec)
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+{
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+ struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec);
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+ int ret;
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+
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+ ret = regulator_bulk_enable(ARRAY_SIZE(tas6424->supplies),
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+ tas6424->supplies);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "failed to enable supplies: %d\n", ret);
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+ return ret;
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+ }
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+
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+ regcache_cache_only(tas6424->regmap, false);
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+
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+ ret = regcache_sync(tas6424->regmap);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "failed to sync regcache: %d\n", ret);
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+ return ret;
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+ }
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+
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+ snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_MUTE);
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+
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+ /* any time we come out of HIZ, the output channels automatically run DC
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+ * load diagnostics, wait here until this completes
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+ */
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+ msleep(230);
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+
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+ return 0;
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+}
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+
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+static int tas6424_set_bias_level(struct snd_soc_codec *codec,
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+ enum snd_soc_bias_level level)
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+{
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+ dev_dbg(codec->dev, "%s() level=%d\n", __func__, level);
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+
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+ switch (level) {
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+ case SND_SOC_BIAS_ON:
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+ case SND_SOC_BIAS_PREPARE:
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+ break;
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+ case SND_SOC_BIAS_STANDBY:
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+ if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF)
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+ tas6424_power_on(codec);
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+ break;
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+ case SND_SOC_BIAS_OFF:
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+ tas6424_power_off(codec);
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+ break;
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+ }
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+
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+ return 0;
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+}
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+
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+static struct snd_soc_codec_driver soc_codec_dev_tas6424 = {
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+ .set_bias_level = tas6424_set_bias_level,
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+ .idle_bias_off = true,
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+
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+ .component_driver = {
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+ .controls = tas6424_snd_controls,
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+ .num_controls = ARRAY_SIZE(tas6424_snd_controls),
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+ .dapm_widgets = tas6424_dapm_widgets,
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+ .num_dapm_widgets = ARRAY_SIZE(tas6424_dapm_widgets),
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+ .dapm_routes = tas6424_audio_map,
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+ .num_dapm_routes = ARRAY_SIZE(tas6424_audio_map),
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+ },
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+};
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+
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+static struct snd_soc_dai_ops tas6424_speaker_dai_ops = {
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+ .hw_params = tas6424_hw_params,
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+ .set_fmt = tas6424_set_dai_fmt,
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+ .set_tdm_slot = tas6424_set_dai_tdm_slot,
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+ .digital_mute = tas6424_mute,
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+};
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+
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+static struct snd_soc_dai_driver tas6424_dai[] = {
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+ {
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+ .name = "tas6424-amplifier",
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+ .playback = {
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+ .stream_name = "Playback",
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+ .channels_min = 1,
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+ .channels_max = 4,
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+ .rates = TAS6424_RATES,
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+ .formats = TAS6424_FORMATS,
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+ },
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+ .ops = &tas6424_speaker_dai_ops,
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+ },
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+};
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+
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+static void tas6424_fault_check_work(struct work_struct *work)
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+{
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+ struct tas6424_data *tas6424 = container_of(work, struct tas6424_data,
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+ fault_check_work.work);
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+ struct device *dev = tas6424->dev;
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+ unsigned int reg;
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+ int ret;
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+
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+ ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT1, ®);
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+ if (ret < 0) {
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+ dev_err(dev, "failed to read FAULT1 register: %d\n", ret);
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Ignore any clock faults as there is no clean way to check for them.
|
|
|
+ * We would need to start checking for those faults *after* the SAIF
|
|
|
+ * stream has been setup, and stop checking *before* the stream is
|
|
|
+ * stopped to avoid any false-positives. However there are no
|
|
|
+ * appropriate hooks to monitor these events.
|
|
|
+ */
|
|
|
+ reg &= TAS6424_FAULT_PVDD_OV |
|
|
|
+ TAS6424_FAULT_VBAT_OV |
|
|
|
+ TAS6424_FAULT_PVDD_UV |
|
|
|
+ TAS6424_FAULT_VBAT_UV;
|
|
|
+
|
|
|
+ if (reg)
|
|
|
+ goto check_global_fault2_reg;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Only flag errors once for a given occurrence. This is needed as
|
|
|
+ * the TAS6424 will take time clearing the fault condition internally
|
|
|
+ * during which we don't want to bombard the system with the same
|
|
|
+ * error message over and over.
|
|
|
+ */
|
|
|
+ if ((reg & TAS6424_FAULT_PVDD_OV) && !(tas6424->last_fault1 & TAS6424_FAULT_PVDD_OV))
|
|
|
+ dev_crit(dev, "experienced a PVDD overvoltage fault\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_VBAT_OV) && !(tas6424->last_fault1 & TAS6424_FAULT_VBAT_OV))
|
|
|
+ dev_crit(dev, "experienced a VBAT overvoltage fault\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_PVDD_UV) && !(tas6424->last_fault1 & TAS6424_FAULT_PVDD_UV))
|
|
|
+ dev_crit(dev, "experienced a PVDD undervoltage fault\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_VBAT_UV) && !(tas6424->last_fault1 & TAS6424_FAULT_VBAT_UV))
|
|
|
+ dev_crit(dev, "experienced a VBAT undervoltage fault\n");
|
|
|
+
|
|
|
+ /* Store current fault1 value so we can detect any changes next time */
|
|
|
+ tas6424->last_fault1 = reg;
|
|
|
+
|
|
|
+check_global_fault2_reg:
|
|
|
+ ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT2, ®);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(dev, "failed to read FAULT2 register: %d\n", ret);
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ reg &= TAS6424_FAULT_OTSD |
|
|
|
+ TAS6424_FAULT_OTSD_CH1 |
|
|
|
+ TAS6424_FAULT_OTSD_CH2 |
|
|
|
+ TAS6424_FAULT_OTSD_CH3 |
|
|
|
+ TAS6424_FAULT_OTSD_CH4;
|
|
|
+
|
|
|
+ if (!reg)
|
|
|
+ goto check_warn_reg;
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_OTSD) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD))
|
|
|
+ dev_crit(dev, "experienced a global overtemp shutdown\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_OTSD_CH1) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH1))
|
|
|
+ dev_crit(dev, "experienced an overtemp shutdown on CH1\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_OTSD_CH2) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH2))
|
|
|
+ dev_crit(dev, "experienced an overtemp shutdown on CH2\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_OTSD_CH3) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH3))
|
|
|
+ dev_crit(dev, "experienced an overtemp shutdown on CH3\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_FAULT_OTSD_CH4) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH4))
|
|
|
+ dev_crit(dev, "experienced an overtemp shutdown on CH4\n");
|
|
|
+
|
|
|
+ /* Store current fault2 value so we can detect any changes next time */
|
|
|
+ tas6424->last_fault2 = reg;
|
|
|
+
|
|
|
+check_warn_reg:
|
|
|
+ ret = regmap_read(tas6424->regmap, TAS6424_WARN, ®);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(dev, "failed to read WARN register: %d\n", ret);
|
|
|
+ goto out;
|
|
|
+ }
|
|
|
+
|
|
|
+ reg &= TAS6424_WARN_VDD_UV |
|
|
|
+ TAS6424_WARN_VDD_POR |
|
|
|
+ TAS6424_WARN_VDD_OTW |
|
|
|
+ TAS6424_WARN_VDD_OTW_CH1 |
|
|
|
+ TAS6424_WARN_VDD_OTW_CH2 |
|
|
|
+ TAS6424_WARN_VDD_OTW_CH3 |
|
|
|
+ TAS6424_WARN_VDD_OTW_CH4;
|
|
|
+
|
|
|
+ if (!reg)
|
|
|
+ goto out;
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_UV) && !(tas6424->last_warn & TAS6424_WARN_VDD_UV))
|
|
|
+ dev_warn(dev, "experienced a VDD under voltage condition\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_POR) && !(tas6424->last_warn & TAS6424_WARN_VDD_POR))
|
|
|
+ dev_warn(dev, "experienced a VDD POR condition\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_OTW) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW))
|
|
|
+ dev_warn(dev, "experienced a global overtemp warning\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_OTW_CH1) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH1))
|
|
|
+ dev_warn(dev, "experienced an overtemp warning on CH1\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_OTW_CH2) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH2))
|
|
|
+ dev_warn(dev, "experienced an overtemp warning on CH2\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_OTW_CH3) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH3))
|
|
|
+ dev_warn(dev, "experienced an overtemp warning on CH3\n");
|
|
|
+
|
|
|
+ if ((reg & TAS6424_WARN_VDD_OTW_CH4) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH4))
|
|
|
+ dev_warn(dev, "experienced an overtemp warning on CH4\n");
|
|
|
+
|
|
|
+ /* Store current warn value so we can detect any changes next time */
|
|
|
+ tas6424->last_warn = reg;
|
|
|
+
|
|
|
+ /* Clear any faults by toggling the CLEAR_FAULT control bit */
|
|
|
+ ret = regmap_write_bits(tas6424->regmap, TAS6424_MISC_CTRL3,
|
|
|
+ TAS6424_CLEAR_FAULT, TAS6424_CLEAR_FAULT);
|
|
|
+ if (ret < 0)
|
|
|
+ dev_err(dev, "failed to write MISC_CTRL3 register: %d\n", ret);
|
|
|
+
|
|
|
+ ret = regmap_write_bits(tas6424->regmap, TAS6424_MISC_CTRL3,
|
|
|
+ TAS6424_CLEAR_FAULT, 0);
|
|
|
+ if (ret < 0)
|
|
|
+ dev_err(dev, "failed to write MISC_CTRL3 register: %d\n", ret);
|
|
|
+
|
|
|
+out:
|
|
|
+ /* Schedule the next fault check at the specified interval */
|
|
|
+ schedule_delayed_work(&tas6424->fault_check_work,
|
|
|
+ msecs_to_jiffies(TAS6424_FAULT_CHECK_INTERVAL));
|
|
|
+}
|
|
|
+
|
|
|
+static const struct reg_default tas6424_reg_defaults[] = {
|
|
|
+ { TAS6424_MODE_CTRL, 0x00 },
|
|
|
+ { TAS6424_MISC_CTRL1, 0x32 },
|
|
|
+ { TAS6424_MISC_CTRL2, 0x62 },
|
|
|
+ { TAS6424_SAP_CTRL, 0x04 },
|
|
|
+ { TAS6424_CH_STATE_CTRL, 0x55 },
|
|
|
+ { TAS6424_CH1_VOL_CTRL, 0xcf },
|
|
|
+ { TAS6424_CH2_VOL_CTRL, 0xcf },
|
|
|
+ { TAS6424_CH3_VOL_CTRL, 0xcf },
|
|
|
+ { TAS6424_CH4_VOL_CTRL, 0xcf },
|
|
|
+ { TAS6424_DC_DIAG_CTRL1, 0x00 },
|
|
|
+ { TAS6424_DC_DIAG_CTRL2, 0x11 },
|
|
|
+ { TAS6424_DC_DIAG_CTRL3, 0x11 },
|
|
|
+ { TAS6424_PIN_CTRL, 0xff },
|
|
|
+ { TAS6424_AC_DIAG_CTRL1, 0x00 },
|
|
|
+ { TAS6424_MISC_CTRL3, 0x00 },
|
|
|
+ { TAS6424_CLIP_CTRL, 0x01 },
|
|
|
+ { TAS6424_CLIP_WINDOW, 0x14 },
|
|
|
+ { TAS6424_CLIP_WARN, 0x00 },
|
|
|
+ { TAS6424_CBC_STAT, 0x00 },
|
|
|
+ { TAS6424_MISC_CTRL4, 0x40 },
|
|
|
+};
|
|
|
+
|
|
|
+static bool tas6424_is_writable_reg(struct device *dev, unsigned int reg)
|
|
|
+{
|
|
|
+ switch (reg) {
|
|
|
+ case TAS6424_MODE_CTRL:
|
|
|
+ case TAS6424_MISC_CTRL1:
|
|
|
+ case TAS6424_MISC_CTRL2:
|
|
|
+ case TAS6424_SAP_CTRL:
|
|
|
+ case TAS6424_CH_STATE_CTRL:
|
|
|
+ case TAS6424_CH1_VOL_CTRL:
|
|
|
+ case TAS6424_CH2_VOL_CTRL:
|
|
|
+ case TAS6424_CH3_VOL_CTRL:
|
|
|
+ case TAS6424_CH4_VOL_CTRL:
|
|
|
+ case TAS6424_DC_DIAG_CTRL1:
|
|
|
+ case TAS6424_DC_DIAG_CTRL2:
|
|
|
+ case TAS6424_DC_DIAG_CTRL3:
|
|
|
+ case TAS6424_PIN_CTRL:
|
|
|
+ case TAS6424_AC_DIAG_CTRL1:
|
|
|
+ case TAS6424_MISC_CTRL3:
|
|
|
+ case TAS6424_CLIP_CTRL:
|
|
|
+ case TAS6424_CLIP_WINDOW:
|
|
|
+ case TAS6424_CLIP_WARN:
|
|
|
+ case TAS6424_CBC_STAT:
|
|
|
+ case TAS6424_MISC_CTRL4:
|
|
|
+ return true;
|
|
|
+ default:
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static bool tas6424_is_volatile_reg(struct device *dev, unsigned int reg)
|
|
|
+{
|
|
|
+ switch (reg) {
|
|
|
+ case TAS6424_DC_LOAD_DIAG_REP12:
|
|
|
+ case TAS6424_DC_LOAD_DIAG_REP34:
|
|
|
+ case TAS6424_DC_LOAD_DIAG_REPLO:
|
|
|
+ case TAS6424_CHANNEL_STATE:
|
|
|
+ case TAS6424_CHANNEL_FAULT:
|
|
|
+ case TAS6424_GLOB_FAULT1:
|
|
|
+ case TAS6424_GLOB_FAULT2:
|
|
|
+ case TAS6424_WARN:
|
|
|
+ case TAS6424_AC_LOAD_DIAG_REP1:
|
|
|
+ case TAS6424_AC_LOAD_DIAG_REP2:
|
|
|
+ case TAS6424_AC_LOAD_DIAG_REP3:
|
|
|
+ case TAS6424_AC_LOAD_DIAG_REP4:
|
|
|
+ return true;
|
|
|
+ default:
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static const struct regmap_config tas6424_regmap_config = {
|
|
|
+ .reg_bits = 8,
|
|
|
+ .val_bits = 8,
|
|
|
+
|
|
|
+ .writeable_reg = tas6424_is_writable_reg,
|
|
|
+ .volatile_reg = tas6424_is_volatile_reg,
|
|
|
+
|
|
|
+ .max_register = TAS6424_MAX,
|
|
|
+ .reg_defaults = tas6424_reg_defaults,
|
|
|
+ .num_reg_defaults = ARRAY_SIZE(tas6424_reg_defaults),
|
|
|
+ .cache_type = REGCACHE_RBTREE,
|
|
|
+};
|
|
|
+
|
|
|
+#if IS_ENABLED(CONFIG_OF)
|
|
|
+static const struct of_device_id tas6424_of_ids[] = {
|
|
|
+ { .compatible = "ti,tas6424", },
|
|
|
+ { },
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(of, tas6424_of_ids);
|
|
|
+#endif
|
|
|
+
|
|
|
+static int tas6424_i2c_probe(struct i2c_client *client,
|
|
|
+ const struct i2c_device_id *id)
|
|
|
+{
|
|
|
+ struct device *dev = &client->dev;
|
|
|
+ struct tas6424_data *tas6424;
|
|
|
+ int ret;
|
|
|
+ int i;
|
|
|
+
|
|
|
+ tas6424 = devm_kzalloc(dev, sizeof(*tas6424), GFP_KERNEL);
|
|
|
+ if (!tas6424)
|
|
|
+ return -ENOMEM;
|
|
|
+ dev_set_drvdata(dev, tas6424);
|
|
|
+
|
|
|
+ tas6424->dev = dev;
|
|
|
+
|
|
|
+ tas6424->regmap = devm_regmap_init_i2c(client, &tas6424_regmap_config);
|
|
|
+ if (IS_ERR(tas6424->regmap)) {
|
|
|
+ ret = PTR_ERR(tas6424->regmap);
|
|
|
+ dev_err(dev, "unable to allocate register map: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0; i < ARRAY_SIZE(tas6424->supplies); i++)
|
|
|
+ tas6424->supplies[i].supply = tas6424_supply_names[i];
|
|
|
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(tas6424->supplies),
|
|
|
+ tas6424->supplies);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "unable to request supplies: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = regulator_bulk_enable(ARRAY_SIZE(tas6424->supplies),
|
|
|
+ tas6424->supplies);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "unable to enable supplies: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Reset device to establish well-defined startup state */
|
|
|
+ ret = regmap_update_bits(tas6424->regmap, TAS6424_MODE_CTRL,
|
|
|
+ TAS6424_RESET, TAS6424_RESET);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "unable to reset device: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ INIT_DELAYED_WORK(&tas6424->fault_check_work, tas6424_fault_check_work);
|
|
|
+
|
|
|
+ ret = snd_soc_register_codec(dev, &soc_codec_dev_tas6424,
|
|
|
+ tas6424_dai, ARRAY_SIZE(tas6424_dai));
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(dev, "unable to register codec: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int tas6424_i2c_remove(struct i2c_client *client)
|
|
|
+{
|
|
|
+ struct device *dev = &client->dev;
|
|
|
+ struct tas6424_data *tas6424 = dev_get_drvdata(dev);
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ snd_soc_unregister_codec(dev);
|
|
|
+
|
|
|
+ cancel_delayed_work_sync(&tas6424->fault_check_work);
|
|
|
+
|
|
|
+ ret = regulator_bulk_disable(ARRAY_SIZE(tas6424->supplies),
|
|
|
+ tas6424->supplies);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(dev, "unable to disable supplies: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct i2c_device_id tas6424_i2c_ids[] = {
|
|
|
+ { "tas6424", 0 },
|
|
|
+ { }
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(i2c, tas6424_i2c_ids);
|
|
|
+
|
|
|
+static struct i2c_driver tas6424_i2c_driver = {
|
|
|
+ .driver = {
|
|
|
+ .name = "tas6424",
|
|
|
+ .of_match_table = of_match_ptr(tas6424_of_ids),
|
|
|
+ },
|
|
|
+ .probe = tas6424_i2c_probe,
|
|
|
+ .remove = tas6424_i2c_remove,
|
|
|
+ .id_table = tas6424_i2c_ids,
|
|
|
+};
|
|
|
+module_i2c_driver(tas6424_i2c_driver);
|
|
|
+
|
|
|
+MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
|
|
|
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
|
|
|
+MODULE_DESCRIPTION("TAS6424 Audio amplifier driver");
|
|
|
+MODULE_LICENSE("GPL v2");
|
Mark Brown
преди 7 години