[alsa-devel] [PATCH v4 0/2] Add support for TI TAS6424 digital amplifier
Hello all,
This series adds support for the TAS6424 digital amplifier. A lot has changed from the last time this upstreaming was attempted, I've taken over this effort for Michael and I don't really have an exact change log but hopefully I've addressed all comments from v3.
Thanks, Andrew
Andreas Dannenberg (1): ASoC: Add support for TAS6424 digital amplifier
Michael Stecklein (1): dt-bindings: sound: add bindings for TAS6424
.../devicetree/bindings/sound/ti,tas6424.txt | 20 + sound/soc/codecs/Kconfig | 8 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/tas6424.c | 707 +++++++++++++++++++++ sound/soc/codecs/tas6424.h | 144 +++++ 5 files changed, 881 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/ti,tas6424.txt create mode 100644 sound/soc/codecs/tas6424.c create mode 100644 sound/soc/codecs/tas6424.h
From: Michael Stecklein m-stecklein@ti.com
Add the bindings for the TAS6424 digital amplifier.
Signed-off-by: Michael Stecklein m-stecklein@ti.com Signed-off-by: Andrew F. Davis afd@ti.com --- .../devicetree/bindings/sound/ti,tas6424.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/ti,tas6424.txt
diff --git a/Documentation/devicetree/bindings/sound/ti,tas6424.txt b/Documentation/devicetree/bindings/sound/ti,tas6424.txt new file mode 100644 index 000000000000..1c4ada0eef4e --- /dev/null +++ b/Documentation/devicetree/bindings/sound/ti,tas6424.txt @@ -0,0 +1,20 @@ +Texas Instruments TAS6424 Quad-Channel Audio amplifier + +The TAS6424 serial control bus communicates through I2C protocols. + +Required properties: + - compatible: "ti,tas6424" - TAS6424 + - reg: I2C slave address + - sound-dai-cells: must be equal to 0 + +Example: + +tas6424: tas6424@6a { + compatible = "ti,tas6424"; + reg = <0x6a>; + + #sound-dai-cells = <0>; +}; + +For more product information please see the link below: +http://www.ti.com/product/TAS6424-Q1
On Tue, Dec 05, 2017 at 09:54:11AM -0600, Andrew F. Davis wrote:
From: Michael Stecklein m-stecklein@ti.com
Add the bindings for the TAS6424 digital amplifier.
Please use subject lines matching the style for the subsystem. This makes it easier for people to identify relevant patches.
The patch
ASoC: tas6424: add bindings for TAS6424
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 2e662342962863bb6044ad581d7cc03795da4e9d Mon Sep 17 00:00:00 2001
From: Michael Stecklein m-stecklein@ti.com Date: Tue, 5 Dec 2017 09:54:11 -0600 Subject: [PATCH] ASoC: tas6424: add bindings for TAS6424
Add the bindings for the TAS6424 digital amplifier.
Signed-off-by: Michael Stecklein m-stecklein@ti.com Signed-off-by: Andrew F. Davis afd@ti.com Signed-off-by: Mark Brown broonie@kernel.org --- .../devicetree/bindings/sound/ti,tas6424.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/ti,tas6424.txt
diff --git a/Documentation/devicetree/bindings/sound/ti,tas6424.txt b/Documentation/devicetree/bindings/sound/ti,tas6424.txt new file mode 100644 index 000000000000..1c4ada0eef4e --- /dev/null +++ b/Documentation/devicetree/bindings/sound/ti,tas6424.txt @@ -0,0 +1,20 @@ +Texas Instruments TAS6424 Quad-Channel Audio amplifier + +The TAS6424 serial control bus communicates through I2C protocols. + +Required properties: + - compatible: "ti,tas6424" - TAS6424 + - reg: I2C slave address + - sound-dai-cells: must be equal to 0 + +Example: + +tas6424: tas6424@6a { + compatible = "ti,tas6424"; + reg = <0x6a>; + + #sound-dai-cells = <0>; +}; + +For more product information please see the link below: +http://www.ti.com/product/TAS6424-Q1
From: Andreas Dannenberg dannenberg@ti.com
The Texas Instruments TAS6424 device is a high-efficiency quad-channel Class-D audio power amplifier. Its digital time division multiplexed (TDM) interface enables up to 2 devices to share the same bus, supporting a total of eight channels from one audio serial port.
Signed-off-by: Andreas Dannenberg dannenberg@ti.com Signed-off-by: Michael Stecklein m-stecklein@ti.com Signed-off-by: Andrew F. Davis afd@ti.com --- sound/soc/codecs/Kconfig | 8 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/tas6424.c | 707 +++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/tas6424.h | 144 +++++++++ 4 files changed, 861 insertions(+) create mode 100644 sound/soc/codecs/tas6424.c create mode 100644 sound/soc/codecs/tas6424.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index a42ddbc93f3d..6c2e0d5426f7 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -148,6 +148,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_TAS5086 if I2C select SND_SOC_TAS571X if I2C select SND_SOC_TAS5720 if I2C + select SND_SOC_TAS6424 if I2C select SND_SOC_TFA9879 if I2C select SND_SOC_TLV320AIC23_I2C if I2C select SND_SOC_TLV320AIC23_SPI if SPI_MASTER @@ -883,6 +884,13 @@ config SND_SOC_TAS5720 Enable support for Texas Instruments TAS5720L/M high-efficiency mono Class-D audio power amplifiers.
+config SND_SOC_TAS6424 + tristate "Texas Instruments TAS6424 Quad-Channel Audio amplifier" + depends on I2C + help + Enable support for Texas Instruments TAS6424 high-efficiency + digital input quad-channel Class-D audio power amplifiers. + config SND_SOC_TFA9879 tristate "NXP Semiconductors TFA9879 amplifier" depends on I2C diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 0001069ce2a7..154abd758c30 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -156,6 +156,7 @@ snd-soc-sti-sas-objs := sti-sas.o snd-soc-tas5086-objs := tas5086.o snd-soc-tas571x-objs := tas571x.o snd-soc-tas5720-objs := tas5720.o +snd-soc-tas6424-objs := tas6424.o snd-soc-tfa9879-objs := tfa9879.o snd-soc-tlv320aic23-objs := tlv320aic23.o snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o @@ -395,6 +396,7 @@ obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o +obj-$(CONFIG_SND_SOC_TAS6424) += snd-soc-tas6424.o obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o diff --git a/sound/soc/codecs/tas6424.c b/sound/soc/codecs/tas6424.c new file mode 100644 index 000000000000..49b87f6e85bf --- /dev/null +++ b/sound/soc/codecs/tas6424.c @@ -0,0 +1,707 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ALSA SoC Texas Instruments TAS6424 Quad-Channel Audio Amplifier + * + * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Andreas Dannenberg dannenberg@ti.com + * Andrew F. Davis afd@ti.com + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/regulator/consumer.h> +#include <linux/delay.h> + +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/tlv.h> + +#include "tas6424.h" + +/* Define how often to check (and clear) the fault status register (in ms) */ +#define TAS6424_FAULT_CHECK_INTERVAL 200 + +static const char * const tas6424_supply_names[] = { + "dvdd", /* Digital power supply. Connect to 3.3-V supply. */ + "vbat", /* Supply used for higher voltage analog circuits. */ + "pvdd", /* Class-D amp output FETs supply. */ +}; +#define TAS6424_NUM_SUPPLIES ARRAY_SIZE(tas6424_supply_names) + +struct tas6424_data { + struct device *dev; + struct regmap *regmap; + struct regulator_bulk_data supplies[TAS6424_NUM_SUPPLIES]; + struct delayed_work fault_check_work; + unsigned int last_fault1; + unsigned int last_fault2; + unsigned int last_warn; +}; + +/* + * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that + * setting the gain below -100 dB (register value <0x7) is effectively a MUTE + * as per device datasheet. + */ +static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0); + +static const struct snd_kcontrol_new tas6424_snd_controls[] = { + SOC_SINGLE_TLV("Speaker Driver CH1 Playback Volume", + TAS6424_CH1_VOL_CTRL, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver CH2 Playback Volume", + TAS6424_CH2_VOL_CTRL, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver CH3 Playback Volume", + TAS6424_CH3_VOL_CTRL, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver CH4 Playback Volume", + TAS6424_CH4_VOL_CTRL, 0, 0xff, 0, dac_tlv), +}; + +static int tas6424_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec); + + dev_dbg(codec->dev, "%s() event=0x%0x\n", __func__, event); + + if (event & SND_SOC_DAPM_POST_PMU) { + /* Observe codec shutdown-to-active time */ + msleep(12); + + /* Turn on TAS6424 periodic fault checking/handling */ + tas6424->last_fault1 = 0; + tas6424->last_fault2 = 0; + tas6424->last_warn = 0; + schedule_delayed_work(&tas6424->fault_check_work, + msecs_to_jiffies(TAS6424_FAULT_CHECK_INTERVAL)); + } else if (event & SND_SOC_DAPM_PRE_PMD) { + /* Disable TAS6424 periodic fault checking/handling */ + cancel_delayed_work_sync(&tas6424->fault_check_work); + } + + return 0; +} + +static const struct snd_soc_dapm_widget tas6424_dapm_widgets[] = { + SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas6424_dac_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_OUTPUT("OUT") +}; + +static const struct snd_soc_dapm_route tas6424_audio_map[] = { + { "DAC", NULL, "DAC IN" }, + { "OUT", NULL, "DAC" }, +}; + +static int tas6424_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; + unsigned int rate = params_rate(params); + unsigned int width = params_width(params); + u8 sap_ctrl = 0; + + dev_dbg(codec->dev, "%s() rate=%u width=%u\n", __func__, rate, width); + + switch (rate) { + case 44100: + sap_ctrl |= TAS6424_SAP_RATE_44100; + break; + case 48000: + sap_ctrl |= TAS6424_SAP_RATE_48000; + break; + case 96000: + sap_ctrl |= TAS6424_SAP_RATE_96000; + break; + default: + dev_err(codec->dev, "unsupported sample rate: %u\n", rate); + return -EINVAL; + } + + switch (width) { + case 16: + sap_ctrl |= TAS6424_SAP_TDM_SLOT_SZ_16; + break; + case 24: + break; + default: + dev_err(codec->dev, "unsupported sample width: %u\n", width); + return -EINVAL; + } + + snd_soc_update_bits(codec, TAS6424_SAP_CTRL, + TAS6424_SAP_RATE_MASK | + TAS6424_SAP_TDM_SLOT_SZ_16, + sap_ctrl); + + return 0; +} + +static int tas6424_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + u8 serial_format = 0; + + dev_dbg(codec->dev, "%s() fmt=0x%0x\n", __func__, fmt); + + /* clock masters */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + dev_err(codec->dev, "Invalid DAI master/slave interface\n"); + return -EINVAL; + } + + /* signal polarity */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + default: + dev_err(codec->dev, "Invalid DAI clock signal polarity\n"); + return -EINVAL; + } + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + serial_format |= TAS6424_SAP_I2S; + break; + case SND_SOC_DAIFMT_DSP_A: + serial_format |= TAS6424_SAP_DSP; + break; + case SND_SOC_DAIFMT_DSP_B: + /* + * We can use the fact that the TAS6424 does not care about the + * LRCLK duty cycle during TDM to receive DSP_B formatted data + * in LEFTJ mode (no delaying of the 1st data bit). + */ + serial_format |= TAS6424_SAP_LEFTJ; + break; + case SND_SOC_DAIFMT_LEFT_J: + serial_format |= TAS6424_SAP_LEFTJ; + break; + default: + dev_err(codec->dev, "Invalid DAI interface format\n"); + return -EINVAL; + } + + snd_soc_update_bits(codec, TAS6424_SAP_CTRL, + TAS6424_SAP_FMT_MASK, serial_format); + + return 0; +} + +static int tas6424_set_dai_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct snd_soc_codec *codec = dai->codec; + unsigned int first_slot, last_slot; + bool sap_tdm_slot_last; + + dev_dbg(codec->dev, "%s() tx_mask=%d rx_mask=%d\n", __func__, + tx_mask, rx_mask); + + if (!tx_mask || !rx_mask) + return 0; /* nothing needed to disable TDM mode */ + + /* + * Determine the first slot and last slot that is being requested so + * we'll be able to more easily enforce certain constraints as the + * TAS6424's TDM interface is not fully configurable. + */ + first_slot = __ffs(tx_mask); + last_slot = __fls(rx_mask); + + if (last_slot - first_slot != 4) { + dev_err(codec->dev, "tdm mask must cover 4 contiguous slots\n"); + return -EINVAL; + } + + switch (first_slot) { + case 0: + sap_tdm_slot_last = false; + break; + case 4: + sap_tdm_slot_last = true; + break; + default: + dev_err(codec->dev, "tdm mask must start at slot 0 or 4\n"); + return -EINVAL; + } + + snd_soc_update_bits(codec, TAS6424_SAP_CTRL, TAS6424_SAP_TDM_SLOT_LAST, + sap_tdm_slot_last ? TAS6424_SAP_TDM_SLOT_LAST : 0); + + return 0; +} + +static int tas6424_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + unsigned int val; + + dev_dbg(codec->dev, "%s() mute=%d\n", __func__, mute); + + if (mute) + val = TAS6424_ALL_STATE_MUTE; + else + val = TAS6424_ALL_STATE_PLAY; + + snd_soc_write(codec, TAS6424_CH_STATE_CTRL, val); + + return 0; +} + +static int tas6424_power_off(struct snd_soc_codec *codec) +{ + struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec); + int ret; + + snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_HIZ); + + regcache_cache_only(tas6424->regmap, true); + regcache_mark_dirty(tas6424->regmap); + + ret = regulator_bulk_disable(ARRAY_SIZE(tas6424->supplies), + tas6424->supplies); + if (ret < 0) { + dev_err(codec->dev, "failed to disable supplies: %d\n", ret); + return ret; + } + + return 0; +} + +static int tas6424_power_on(struct snd_soc_codec *codec) +{ + struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(tas6424->supplies), + tas6424->supplies); + if (ret < 0) { + dev_err(codec->dev, "failed to enable supplies: %d\n", ret); + return ret; + } + + regcache_cache_only(tas6424->regmap, false); + + ret = regcache_sync(tas6424->regmap); + if (ret < 0) { + dev_err(codec->dev, "failed to sync regcache: %d\n", ret); + return ret; + } + + snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_MUTE); + + /* any time we come out of HIZ, the output channels automatically run DC + * load diagnostics, wait here until this completes + */ + msleep(230); + + return 0; +} + +static int tas6424_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + dev_dbg(codec->dev, "%s() level=%d\n", __func__, level); + + switch (level) { + case SND_SOC_BIAS_ON: + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) + tas6424_power_on(codec); + break; + case SND_SOC_BIAS_OFF: + tas6424_power_off(codec); + break; + } + + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_tas6424 = { + .set_bias_level = tas6424_set_bias_level, + .idle_bias_off = true, + + .component_driver = { + .controls = tas6424_snd_controls, + .num_controls = ARRAY_SIZE(tas6424_snd_controls), + .dapm_widgets = tas6424_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tas6424_dapm_widgets), + .dapm_routes = tas6424_audio_map, + .num_dapm_routes = ARRAY_SIZE(tas6424_audio_map), + }, +}; + +static struct snd_soc_dai_ops tas6424_speaker_dai_ops = { + .hw_params = tas6424_hw_params, + .set_fmt = tas6424_set_dai_fmt, + .set_tdm_slot = tas6424_set_dai_tdm_slot, + .digital_mute = tas6424_mute, +}; + +static struct snd_soc_dai_driver tas6424_dai[] = { + { + .name = "tas6424-amplifier", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 4, + .rates = TAS6424_RATES, + .formats = TAS6424_FORMATS, + }, + .ops = &tas6424_speaker_dai_ops, + }, +}; + +static void tas6424_fault_check_work(struct work_struct *work) +{ + struct tas6424_data *tas6424 = container_of(work, struct tas6424_data, + fault_check_work.work); + struct device *dev = tas6424->dev; + unsigned int reg; + int ret; + + ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT1, ®); + if (ret < 0) { + 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"); diff --git a/sound/soc/codecs/tas6424.h b/sound/soc/codecs/tas6424.h new file mode 100644 index 000000000000..430588328a06 --- /dev/null +++ b/sound/soc/codecs/tas6424.h @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ALSA SoC Texas Instruments TAS6424 Quad-Channel Audio Amplifier + * + * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Andreas Dannenberg dannenberg@ti.com + * Andrew F. Davis afd@ti.com + */ + +#ifndef __TAS6424_H__ +#define __TAS6424_H__ + +#define TAS6424_RATES (SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | \ + SNDRV_PCM_RATE_96000) + +#define TAS6424_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE) + +/* Register Address Map */ +#define TAS6424_MODE_CTRL 0x00 +#define TAS6424_MISC_CTRL1 0x01 +#define TAS6424_MISC_CTRL2 0x02 +#define TAS6424_SAP_CTRL 0x03 +#define TAS6424_CH_STATE_CTRL 0x04 +#define TAS6424_CH1_VOL_CTRL 0x05 +#define TAS6424_CH2_VOL_CTRL 0x06 +#define TAS6424_CH3_VOL_CTRL 0x07 +#define TAS6424_CH4_VOL_CTRL 0x08 +#define TAS6424_DC_DIAG_CTRL1 0x09 +#define TAS6424_DC_DIAG_CTRL2 0x0a +#define TAS6424_DC_DIAG_CTRL3 0x0b +#define TAS6424_DC_LOAD_DIAG_REP12 0x0c +#define TAS6424_DC_LOAD_DIAG_REP34 0x0d +#define TAS6424_DC_LOAD_DIAG_REPLO 0x0e +#define TAS6424_CHANNEL_STATE 0x0f +#define TAS6424_CHANNEL_FAULT 0x10 +#define TAS6424_GLOB_FAULT1 0x11 +#define TAS6424_GLOB_FAULT2 0x12 +#define TAS6424_WARN 0x13 +#define TAS6424_PIN_CTRL 0x14 +#define TAS6424_AC_DIAG_CTRL1 0x15 +#define TAS6424_AC_DIAG_CTRL2 0x16 +#define TAS6424_AC_LOAD_DIAG_REP1 0x17 +#define TAS6424_AC_LOAD_DIAG_REP2 0x18 +#define TAS6424_AC_LOAD_DIAG_REP3 0x19 +#define TAS6424_AC_LOAD_DIAG_REP4 0x1a +#define TAS6424_MISC_CTRL3 0x21 +#define TAS6424_CLIP_CTRL 0x22 +#define TAS6424_CLIP_WINDOW 0x23 +#define TAS6424_CLIP_WARN 0x24 +#define TAS6424_CBC_STAT 0x25 +#define TAS6424_MISC_CTRL4 0x26 +#define TAS6424_MAX TAS6424_MISC_CTRL4 + +/* TAS6424_MODE_CTRL_REG */ +#define TAS6424_RESET BIT(7) + +/* TAS6424_SAP_CTRL_REG */ +#define TAS6424_SAP_RATE_MASK GENMASK(7, 6) +#define TAS6424_SAP_RATE_44100 (0x00 << 6) +#define TAS6424_SAP_RATE_48000 (0x01 << 6) +#define TAS6424_SAP_RATE_96000 (0x02 << 6) +#define TAS6424_SAP_TDM_SLOT_LAST BIT(5) +#define TAS6424_SAP_TDM_SLOT_SZ_16 BIT(4) +#define TAS6424_SAP_TDM_SLOT_SWAP BIT(3) +#define TAS6424_SAP_FMT_MASK GENMASK(2, 0) +#define TAS6424_SAP_RIGHTJ_24 (0x00 << 0) +#define TAS6424_SAP_RIGHTJ_20 (0x01 << 0) +#define TAS6424_SAP_RIGHTJ_18 (0x02 << 0) +#define TAS6424_SAP_RIGHTJ_16 (0x03 << 0) +#define TAS6424_SAP_I2S (0x04 << 0) +#define TAS6424_SAP_LEFTJ (0x05 << 0) +#define TAS6424_SAP_DSP (0x06 << 0) + +/* TAS6424_CH_STATE_CTRL_REG */ +#define TAS6424_CH1_STATE_MASK GENMASK(7, 6) +#define TAS6424_CH1_STATE_PLAY (0x00 << 6) +#define TAS6424_CH1_STATE_HIZ (0x01 << 6) +#define TAS6424_CH1_STATE_MUTE (0x02 << 6) +#define TAS6424_CH1_STATE_DIAG (0x03 << 6) +#define TAS6424_CH2_STATE_MASK GENMASK(5, 4) +#define TAS6424_CH2_STATE_PLAY (0x00 << 4) +#define TAS6424_CH2_STATE_HIZ (0x01 << 4) +#define TAS6424_CH2_STATE_MUTE (0x02 << 4) +#define TAS6424_CH2_STATE_DIAG (0x03 << 4) +#define TAS6424_CH3_STATE_MASK GENMASK(3, 2) +#define TAS6424_CH3_STATE_PLAY (0x00 << 2) +#define TAS6424_CH3_STATE_HIZ (0x01 << 2) +#define TAS6424_CH3_STATE_MUTE (0x02 << 2) +#define TAS6424_CH3_STATE_DIAG (0x03 << 2) +#define TAS6424_CH4_STATE_MASK GENMASK(1, 0) +#define TAS6424_CH4_STATE_PLAY (0x00 << 0) +#define TAS6424_CH4_STATE_HIZ (0x01 << 0) +#define TAS6424_CH4_STATE_MUTE (0x02 << 0) +#define TAS6424_CH4_STATE_DIAG (0x03 << 0) +#define TAS6424_ALL_STATE_PLAY (TAS6424_CH1_STATE_PLAY | \ + TAS6424_CH2_STATE_PLAY | \ + TAS6424_CH3_STATE_PLAY | \ + TAS6424_CH4_STATE_PLAY) +#define TAS6424_ALL_STATE_HIZ (TAS6424_CH1_STATE_HIZ | \ + TAS6424_CH2_STATE_HIZ | \ + TAS6424_CH3_STATE_HIZ | \ + TAS6424_CH4_STATE_HIZ) +#define TAS6424_ALL_STATE_MUTE (TAS6424_CH1_STATE_MUTE | \ + TAS6424_CH2_STATE_MUTE | \ + TAS6424_CH3_STATE_MUTE | \ + TAS6424_CH4_STATE_MUTE) +#define TAS6424_ALL_STATE_DIAG (TAS6424_CH1_STATE_DIAG | \ + TAS6424_CH2_STATE_DIAG | \ + TAS6424_CH3_STATE_DIAG | \ + TAS6424_CH4_STATE_DIAG) + +/* TAS6424_GLOB_FAULT1_REG */ +#define TAS6424_FAULT_CLOCK BIT(4) +#define TAS6424_FAULT_PVDD_OV BIT(3) +#define TAS6424_FAULT_VBAT_OV BIT(2) +#define TAS6424_FAULT_PVDD_UV BIT(1) +#define TAS6424_FAULT_VBAT_UV BIT(0) + +/* TAS6424_GLOB_FAULT2_REG */ +#define TAS6424_FAULT_OTSD BIT(4) +#define TAS6424_FAULT_OTSD_CH1 BIT(3) +#define TAS6424_FAULT_OTSD_CH2 BIT(2) +#define TAS6424_FAULT_OTSD_CH3 BIT(1) +#define TAS6424_FAULT_OTSD_CH4 BIT(0) + +/* TAS6424_WARN_REG */ +#define TAS6424_WARN_VDD_UV BIT(6) +#define TAS6424_WARN_VDD_POR BIT(5) +#define TAS6424_WARN_VDD_OTW BIT(4) +#define TAS6424_WARN_VDD_OTW_CH1 BIT(3) +#define TAS6424_WARN_VDD_OTW_CH2 BIT(2) +#define TAS6424_WARN_VDD_OTW_CH3 BIT(1) +#define TAS6424_WARN_VDD_OTW_CH4 BIT(0) + +/* TAS6424_MISC_CTRL3_REG */ +#define TAS6424_CLEAR_FAULT BIT(7) +#define TAS6424_PBTL_CH_SEL BIT(6) +#define TAS6424_MASK_CBC_WARN BIT(5) +#define TAS6424_MASK_VDD_UV BIT(4) +#define TAS6424_OTSD_AUTO_RECOVERY BIT(3) + +#endif /* __TAS6424_H__ */
The patch
ASoC: tas6424: Add support for TAS6424 digital amplifier
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 157b68babe3281222e08c9c58456ca22544f06bc Mon Sep 17 00:00:00 2001
From: Andreas Dannenberg dannenberg@ti.com Date: Tue, 5 Dec 2017 09:54:12 -0600 Subject: [PATCH] ASoC: tas6424: Add support for TAS6424 digital amplifier
The Texas Instruments TAS6424 device is a high-efficiency quad-channel Class-D audio power amplifier. Its digital time division multiplexed (TDM) interface enables up to 2 devices to share the same bus, supporting a total of eight channels from one audio serial port.
Signed-off-by: Andreas Dannenberg dannenberg@ti.com Signed-off-by: Michael Stecklein m-stecklein@ti.com Signed-off-by: Andrew F. Davis afd@ti.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/Kconfig | 8 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/tas6424.c | 707 +++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/tas6424.h | 144 +++++++++ 4 files changed, 861 insertions(+) create mode 100644 sound/soc/codecs/tas6424.c create mode 100644 sound/soc/codecs/tas6424.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index a42ddbc93f3d..6c2e0d5426f7 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -148,6 +148,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_TAS5086 if I2C select SND_SOC_TAS571X if I2C select SND_SOC_TAS5720 if I2C + select SND_SOC_TAS6424 if I2C select SND_SOC_TFA9879 if I2C select SND_SOC_TLV320AIC23_I2C if I2C select SND_SOC_TLV320AIC23_SPI if SPI_MASTER @@ -883,6 +884,13 @@ config SND_SOC_TAS5720 Enable support for Texas Instruments TAS5720L/M high-efficiency mono Class-D audio power amplifiers.
+config SND_SOC_TAS6424 + tristate "Texas Instruments TAS6424 Quad-Channel Audio amplifier" + depends on I2C + help + Enable support for Texas Instruments TAS6424 high-efficiency + digital input quad-channel Class-D audio power amplifiers. + config SND_SOC_TFA9879 tristate "NXP Semiconductors TFA9879 amplifier" depends on I2C diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 0001069ce2a7..154abd758c30 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -156,6 +156,7 @@ snd-soc-sti-sas-objs := sti-sas.o snd-soc-tas5086-objs := tas5086.o snd-soc-tas571x-objs := tas571x.o snd-soc-tas5720-objs := tas5720.o +snd-soc-tas6424-objs := tas6424.o snd-soc-tfa9879-objs := tfa9879.o snd-soc-tlv320aic23-objs := tlv320aic23.o snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o @@ -395,6 +396,7 @@ obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o +obj-$(CONFIG_SND_SOC_TAS6424) += snd-soc-tas6424.o obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o diff --git a/sound/soc/codecs/tas6424.c b/sound/soc/codecs/tas6424.c new file mode 100644 index 000000000000..49b87f6e85bf --- /dev/null +++ b/sound/soc/codecs/tas6424.c @@ -0,0 +1,707 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ALSA SoC Texas Instruments TAS6424 Quad-Channel Audio Amplifier + * + * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Andreas Dannenberg dannenberg@ti.com + * Andrew F. Davis afd@ti.com + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/i2c.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/regulator/consumer.h> +#include <linux/delay.h> + +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/tlv.h> + +#include "tas6424.h" + +/* Define how often to check (and clear) the fault status register (in ms) */ +#define TAS6424_FAULT_CHECK_INTERVAL 200 + +static const char * const tas6424_supply_names[] = { + "dvdd", /* Digital power supply. Connect to 3.3-V supply. */ + "vbat", /* Supply used for higher voltage analog circuits. */ + "pvdd", /* Class-D amp output FETs supply. */ +}; +#define TAS6424_NUM_SUPPLIES ARRAY_SIZE(tas6424_supply_names) + +struct tas6424_data { + struct device *dev; + struct regmap *regmap; + struct regulator_bulk_data supplies[TAS6424_NUM_SUPPLIES]; + struct delayed_work fault_check_work; + unsigned int last_fault1; + unsigned int last_fault2; + unsigned int last_warn; +}; + +/* + * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that + * setting the gain below -100 dB (register value <0x7) is effectively a MUTE + * as per device datasheet. + */ +static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0); + +static const struct snd_kcontrol_new tas6424_snd_controls[] = { + SOC_SINGLE_TLV("Speaker Driver CH1 Playback Volume", + TAS6424_CH1_VOL_CTRL, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver CH2 Playback Volume", + TAS6424_CH2_VOL_CTRL, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver CH3 Playback Volume", + TAS6424_CH3_VOL_CTRL, 0, 0xff, 0, dac_tlv), + SOC_SINGLE_TLV("Speaker Driver CH4 Playback Volume", + TAS6424_CH4_VOL_CTRL, 0, 0xff, 0, dac_tlv), +}; + +static int tas6424_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec); + + dev_dbg(codec->dev, "%s() event=0x%0x\n", __func__, event); + + if (event & SND_SOC_DAPM_POST_PMU) { + /* Observe codec shutdown-to-active time */ + msleep(12); + + /* Turn on TAS6424 periodic fault checking/handling */ + tas6424->last_fault1 = 0; + tas6424->last_fault2 = 0; + tas6424->last_warn = 0; + schedule_delayed_work(&tas6424->fault_check_work, + msecs_to_jiffies(TAS6424_FAULT_CHECK_INTERVAL)); + } else if (event & SND_SOC_DAPM_PRE_PMD) { + /* Disable TAS6424 periodic fault checking/handling */ + cancel_delayed_work_sync(&tas6424->fault_check_work); + } + + return 0; +} + +static const struct snd_soc_dapm_widget tas6424_dapm_widgets[] = { + SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas6424_dac_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_OUTPUT("OUT") +}; + +static const struct snd_soc_dapm_route tas6424_audio_map[] = { + { "DAC", NULL, "DAC IN" }, + { "OUT", NULL, "DAC" }, +}; + +static int tas6424_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; + unsigned int rate = params_rate(params); + unsigned int width = params_width(params); + u8 sap_ctrl = 0; + + dev_dbg(codec->dev, "%s() rate=%u width=%u\n", __func__, rate, width); + + switch (rate) { + case 44100: + sap_ctrl |= TAS6424_SAP_RATE_44100; + break; + case 48000: + sap_ctrl |= TAS6424_SAP_RATE_48000; + break; + case 96000: + sap_ctrl |= TAS6424_SAP_RATE_96000; + break; + default: + dev_err(codec->dev, "unsupported sample rate: %u\n", rate); + return -EINVAL; + } + + switch (width) { + case 16: + sap_ctrl |= TAS6424_SAP_TDM_SLOT_SZ_16; + break; + case 24: + break; + default: + dev_err(codec->dev, "unsupported sample width: %u\n", width); + return -EINVAL; + } + + snd_soc_update_bits(codec, TAS6424_SAP_CTRL, + TAS6424_SAP_RATE_MASK | + TAS6424_SAP_TDM_SLOT_SZ_16, + sap_ctrl); + + return 0; +} + +static int tas6424_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + u8 serial_format = 0; + + dev_dbg(codec->dev, "%s() fmt=0x%0x\n", __func__, fmt); + + /* clock masters */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + dev_err(codec->dev, "Invalid DAI master/slave interface\n"); + return -EINVAL; + } + + /* signal polarity */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + default: + dev_err(codec->dev, "Invalid DAI clock signal polarity\n"); + return -EINVAL; + } + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + serial_format |= TAS6424_SAP_I2S; + break; + case SND_SOC_DAIFMT_DSP_A: + serial_format |= TAS6424_SAP_DSP; + break; + case SND_SOC_DAIFMT_DSP_B: + /* + * We can use the fact that the TAS6424 does not care about the + * LRCLK duty cycle during TDM to receive DSP_B formatted data + * in LEFTJ mode (no delaying of the 1st data bit). + */ + serial_format |= TAS6424_SAP_LEFTJ; + break; + case SND_SOC_DAIFMT_LEFT_J: + serial_format |= TAS6424_SAP_LEFTJ; + break; + default: + dev_err(codec->dev, "Invalid DAI interface format\n"); + return -EINVAL; + } + + snd_soc_update_bits(codec, TAS6424_SAP_CTRL, + TAS6424_SAP_FMT_MASK, serial_format); + + return 0; +} + +static int tas6424_set_dai_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct snd_soc_codec *codec = dai->codec; + unsigned int first_slot, last_slot; + bool sap_tdm_slot_last; + + dev_dbg(codec->dev, "%s() tx_mask=%d rx_mask=%d\n", __func__, + tx_mask, rx_mask); + + if (!tx_mask || !rx_mask) + return 0; /* nothing needed to disable TDM mode */ + + /* + * Determine the first slot and last slot that is being requested so + * we'll be able to more easily enforce certain constraints as the + * TAS6424's TDM interface is not fully configurable. + */ + first_slot = __ffs(tx_mask); + last_slot = __fls(rx_mask); + + if (last_slot - first_slot != 4) { + dev_err(codec->dev, "tdm mask must cover 4 contiguous slots\n"); + return -EINVAL; + } + + switch (first_slot) { + case 0: + sap_tdm_slot_last = false; + break; + case 4: + sap_tdm_slot_last = true; + break; + default: + dev_err(codec->dev, "tdm mask must start at slot 0 or 4\n"); + return -EINVAL; + } + + snd_soc_update_bits(codec, TAS6424_SAP_CTRL, TAS6424_SAP_TDM_SLOT_LAST, + sap_tdm_slot_last ? TAS6424_SAP_TDM_SLOT_LAST : 0); + + return 0; +} + +static int tas6424_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + unsigned int val; + + dev_dbg(codec->dev, "%s() mute=%d\n", __func__, mute); + + if (mute) + val = TAS6424_ALL_STATE_MUTE; + else + val = TAS6424_ALL_STATE_PLAY; + + snd_soc_write(codec, TAS6424_CH_STATE_CTRL, val); + + return 0; +} + +static int tas6424_power_off(struct snd_soc_codec *codec) +{ + struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec); + int ret; + + snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_HIZ); + + regcache_cache_only(tas6424->regmap, true); + regcache_mark_dirty(tas6424->regmap); + + ret = regulator_bulk_disable(ARRAY_SIZE(tas6424->supplies), + tas6424->supplies); + if (ret < 0) { + dev_err(codec->dev, "failed to disable supplies: %d\n", ret); + return ret; + } + + return 0; +} + +static int tas6424_power_on(struct snd_soc_codec *codec) +{ + struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(tas6424->supplies), + tas6424->supplies); + if (ret < 0) { + dev_err(codec->dev, "failed to enable supplies: %d\n", ret); + return ret; + } + + regcache_cache_only(tas6424->regmap, false); + + ret = regcache_sync(tas6424->regmap); + if (ret < 0) { + dev_err(codec->dev, "failed to sync regcache: %d\n", ret); + return ret; + } + + snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_MUTE); + + /* any time we come out of HIZ, the output channels automatically run DC + * load diagnostics, wait here until this completes + */ + msleep(230); + + return 0; +} + +static int tas6424_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + dev_dbg(codec->dev, "%s() level=%d\n", __func__, level); + + switch (level) { + case SND_SOC_BIAS_ON: + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) + tas6424_power_on(codec); + break; + case SND_SOC_BIAS_OFF: + tas6424_power_off(codec); + break; + } + + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_tas6424 = { + .set_bias_level = tas6424_set_bias_level, + .idle_bias_off = true, + + .component_driver = { + .controls = tas6424_snd_controls, + .num_controls = ARRAY_SIZE(tas6424_snd_controls), + .dapm_widgets = tas6424_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tas6424_dapm_widgets), + .dapm_routes = tas6424_audio_map, + .num_dapm_routes = ARRAY_SIZE(tas6424_audio_map), + }, +}; + +static struct snd_soc_dai_ops tas6424_speaker_dai_ops = { + .hw_params = tas6424_hw_params, + .set_fmt = tas6424_set_dai_fmt, + .set_tdm_slot = tas6424_set_dai_tdm_slot, + .digital_mute = tas6424_mute, +}; + +static struct snd_soc_dai_driver tas6424_dai[] = { + { + .name = "tas6424-amplifier", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 4, + .rates = TAS6424_RATES, + .formats = TAS6424_FORMATS, + }, + .ops = &tas6424_speaker_dai_ops, + }, +}; + +static void tas6424_fault_check_work(struct work_struct *work) +{ + struct tas6424_data *tas6424 = container_of(work, struct tas6424_data, + fault_check_work.work); + struct device *dev = tas6424->dev; + unsigned int reg; + int ret; + + ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT1, ®); + if (ret < 0) { + 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"); diff --git a/sound/soc/codecs/tas6424.h b/sound/soc/codecs/tas6424.h new file mode 100644 index 000000000000..430588328a06 --- /dev/null +++ b/sound/soc/codecs/tas6424.h @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ALSA SoC Texas Instruments TAS6424 Quad-Channel Audio Amplifier + * + * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Andreas Dannenberg dannenberg@ti.com + * Andrew F. Davis afd@ti.com + */ + +#ifndef __TAS6424_H__ +#define __TAS6424_H__ + +#define TAS6424_RATES (SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | \ + SNDRV_PCM_RATE_96000) + +#define TAS6424_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE) + +/* Register Address Map */ +#define TAS6424_MODE_CTRL 0x00 +#define TAS6424_MISC_CTRL1 0x01 +#define TAS6424_MISC_CTRL2 0x02 +#define TAS6424_SAP_CTRL 0x03 +#define TAS6424_CH_STATE_CTRL 0x04 +#define TAS6424_CH1_VOL_CTRL 0x05 +#define TAS6424_CH2_VOL_CTRL 0x06 +#define TAS6424_CH3_VOL_CTRL 0x07 +#define TAS6424_CH4_VOL_CTRL 0x08 +#define TAS6424_DC_DIAG_CTRL1 0x09 +#define TAS6424_DC_DIAG_CTRL2 0x0a +#define TAS6424_DC_DIAG_CTRL3 0x0b +#define TAS6424_DC_LOAD_DIAG_REP12 0x0c +#define TAS6424_DC_LOAD_DIAG_REP34 0x0d +#define TAS6424_DC_LOAD_DIAG_REPLO 0x0e +#define TAS6424_CHANNEL_STATE 0x0f +#define TAS6424_CHANNEL_FAULT 0x10 +#define TAS6424_GLOB_FAULT1 0x11 +#define TAS6424_GLOB_FAULT2 0x12 +#define TAS6424_WARN 0x13 +#define TAS6424_PIN_CTRL 0x14 +#define TAS6424_AC_DIAG_CTRL1 0x15 +#define TAS6424_AC_DIAG_CTRL2 0x16 +#define TAS6424_AC_LOAD_DIAG_REP1 0x17 +#define TAS6424_AC_LOAD_DIAG_REP2 0x18 +#define TAS6424_AC_LOAD_DIAG_REP3 0x19 +#define TAS6424_AC_LOAD_DIAG_REP4 0x1a +#define TAS6424_MISC_CTRL3 0x21 +#define TAS6424_CLIP_CTRL 0x22 +#define TAS6424_CLIP_WINDOW 0x23 +#define TAS6424_CLIP_WARN 0x24 +#define TAS6424_CBC_STAT 0x25 +#define TAS6424_MISC_CTRL4 0x26 +#define TAS6424_MAX TAS6424_MISC_CTRL4 + +/* TAS6424_MODE_CTRL_REG */ +#define TAS6424_RESET BIT(7) + +/* TAS6424_SAP_CTRL_REG */ +#define TAS6424_SAP_RATE_MASK GENMASK(7, 6) +#define TAS6424_SAP_RATE_44100 (0x00 << 6) +#define TAS6424_SAP_RATE_48000 (0x01 << 6) +#define TAS6424_SAP_RATE_96000 (0x02 << 6) +#define TAS6424_SAP_TDM_SLOT_LAST BIT(5) +#define TAS6424_SAP_TDM_SLOT_SZ_16 BIT(4) +#define TAS6424_SAP_TDM_SLOT_SWAP BIT(3) +#define TAS6424_SAP_FMT_MASK GENMASK(2, 0) +#define TAS6424_SAP_RIGHTJ_24 (0x00 << 0) +#define TAS6424_SAP_RIGHTJ_20 (0x01 << 0) +#define TAS6424_SAP_RIGHTJ_18 (0x02 << 0) +#define TAS6424_SAP_RIGHTJ_16 (0x03 << 0) +#define TAS6424_SAP_I2S (0x04 << 0) +#define TAS6424_SAP_LEFTJ (0x05 << 0) +#define TAS6424_SAP_DSP (0x06 << 0) + +/* TAS6424_CH_STATE_CTRL_REG */ +#define TAS6424_CH1_STATE_MASK GENMASK(7, 6) +#define TAS6424_CH1_STATE_PLAY (0x00 << 6) +#define TAS6424_CH1_STATE_HIZ (0x01 << 6) +#define TAS6424_CH1_STATE_MUTE (0x02 << 6) +#define TAS6424_CH1_STATE_DIAG (0x03 << 6) +#define TAS6424_CH2_STATE_MASK GENMASK(5, 4) +#define TAS6424_CH2_STATE_PLAY (0x00 << 4) +#define TAS6424_CH2_STATE_HIZ (0x01 << 4) +#define TAS6424_CH2_STATE_MUTE (0x02 << 4) +#define TAS6424_CH2_STATE_DIAG (0x03 << 4) +#define TAS6424_CH3_STATE_MASK GENMASK(3, 2) +#define TAS6424_CH3_STATE_PLAY (0x00 << 2) +#define TAS6424_CH3_STATE_HIZ (0x01 << 2) +#define TAS6424_CH3_STATE_MUTE (0x02 << 2) +#define TAS6424_CH3_STATE_DIAG (0x03 << 2) +#define TAS6424_CH4_STATE_MASK GENMASK(1, 0) +#define TAS6424_CH4_STATE_PLAY (0x00 << 0) +#define TAS6424_CH4_STATE_HIZ (0x01 << 0) +#define TAS6424_CH4_STATE_MUTE (0x02 << 0) +#define TAS6424_CH4_STATE_DIAG (0x03 << 0) +#define TAS6424_ALL_STATE_PLAY (TAS6424_CH1_STATE_PLAY | \ + TAS6424_CH2_STATE_PLAY | \ + TAS6424_CH3_STATE_PLAY | \ + TAS6424_CH4_STATE_PLAY) +#define TAS6424_ALL_STATE_HIZ (TAS6424_CH1_STATE_HIZ | \ + TAS6424_CH2_STATE_HIZ | \ + TAS6424_CH3_STATE_HIZ | \ + TAS6424_CH4_STATE_HIZ) +#define TAS6424_ALL_STATE_MUTE (TAS6424_CH1_STATE_MUTE | \ + TAS6424_CH2_STATE_MUTE | \ + TAS6424_CH3_STATE_MUTE | \ + TAS6424_CH4_STATE_MUTE) +#define TAS6424_ALL_STATE_DIAG (TAS6424_CH1_STATE_DIAG | \ + TAS6424_CH2_STATE_DIAG | \ + TAS6424_CH3_STATE_DIAG | \ + TAS6424_CH4_STATE_DIAG) + +/* TAS6424_GLOB_FAULT1_REG */ +#define TAS6424_FAULT_CLOCK BIT(4) +#define TAS6424_FAULT_PVDD_OV BIT(3) +#define TAS6424_FAULT_VBAT_OV BIT(2) +#define TAS6424_FAULT_PVDD_UV BIT(1) +#define TAS6424_FAULT_VBAT_UV BIT(0) + +/* TAS6424_GLOB_FAULT2_REG */ +#define TAS6424_FAULT_OTSD BIT(4) +#define TAS6424_FAULT_OTSD_CH1 BIT(3) +#define TAS6424_FAULT_OTSD_CH2 BIT(2) +#define TAS6424_FAULT_OTSD_CH3 BIT(1) +#define TAS6424_FAULT_OTSD_CH4 BIT(0) + +/* TAS6424_WARN_REG */ +#define TAS6424_WARN_VDD_UV BIT(6) +#define TAS6424_WARN_VDD_POR BIT(5) +#define TAS6424_WARN_VDD_OTW BIT(4) +#define TAS6424_WARN_VDD_OTW_CH1 BIT(3) +#define TAS6424_WARN_VDD_OTW_CH2 BIT(2) +#define TAS6424_WARN_VDD_OTW_CH3 BIT(1) +#define TAS6424_WARN_VDD_OTW_CH4 BIT(0) + +/* TAS6424_MISC_CTRL3_REG */ +#define TAS6424_CLEAR_FAULT BIT(7) +#define TAS6424_PBTL_CH_SEL BIT(6) +#define TAS6424_MASK_CBC_WARN BIT(5) +#define TAS6424_MASK_VDD_UV BIT(4) +#define TAS6424_OTSD_AUTO_RECOVERY BIT(3) + +#endif /* __TAS6424_H__ */
participants (2)
-
Andrew F. Davis -
Mark Brown