The src4xxx keyword is used for future capability to integrate other codecs similar to the src4392 to the same code base.
Signed-off-by: Matt Flax flatmax@flatmax.com ---
Notes: V2 changes : * Fixed indents in Kconfig * Comment header of source code is now one block * Documented the devicetree binding * sample rate converter MCLK src is non-user settable * hushed spurious dev_info output * src4xxx_remove was empty is removed. * Using switch in hw_params to select port reg. for clarity * Removed interrupt reg. settings - will re-intro. properly later * probe function is now EXPORT_SYMBOL_GPL
.../devicetree/bindings/sound/src4xxx.txt | 20 + sound/soc/codecs/Kconfig | 13 + sound/soc/codecs/Makefile | 4 + sound/soc/codecs/src4xxx-i2c.c | 55 ++ sound/soc/codecs/src4xxx.c | 508 ++++++++++++++++++ sound/soc/codecs/src4xxx.h | 115 ++++ 6 files changed, 715 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/src4xxx.txt create mode 100644 sound/soc/codecs/src4xxx-i2c.c create mode 100644 sound/soc/codecs/src4xxx.c create mode 100644 sound/soc/codecs/src4xxx.h
diff --git a/Documentation/devicetree/bindings/sound/src4xxx.txt b/Documentation/devicetree/bindings/sound/src4xxx.txt new file mode 100644 index 000000000000..f8d845d42f42 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/src4xxx.txt @@ -0,0 +1,20 @@ +Texas Instruments src4392 DT bindings + +SRC4392 is a digital audio codec that can be connected via +I2C or SPI. Currently, only I2C bus is supported. + +Required properties: + + - compatible: "ti,src4392" + +Required properties on I2C: + + - reg: the I2C address + +Examples: + + src4392@70 { + compatible = "ti,src4392"; + reg = <0x70>; + #sound-dai-cells = <0>; + }; diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index d16b4efb88a7..9c9d74074888 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -205,6 +205,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_SIMPLE_AMPLIFIER imply SND_SOC_SIMPLE_MUX imply SND_SOC_SPDIF + imply SND_SOC_SRC4XXX_I2C imply SND_SOC_SSM2305 imply SND_SOC_SSM2518 imply SND_SOC_SSM2602_SPI @@ -1471,6 +1472,18 @@ config SND_SOC_SIMPLE_MUX config SND_SOC_SPDIF tristate "S/PDIF CODEC"
+config SND_SOC_SRC4XXX_I2C + tristate + depends on I2C + select SND_SOC_SRC4XXX + +config SND_SOC_SRC4XXX + tristate "Texas Instruments SRC4XXX DIR/DIT and SRC codecs" + help + Enable support for the TI SRC4XXX family of codecs. These include the + scr4392 which has digital receivers, transmitters, and + a sample rate converter, including numerous ports. + config SND_SOC_SSM2305 tristate "Analog Devices SSM2305 Class-D Amplifier" help diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 92fd441d426a..a599b727c65b 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -231,6 +231,8 @@ snd-soc-sigmadsp-regmap-objs := sigmadsp-regmap.o snd-soc-si476x-objs := si476x.o snd-soc-spdif-tx-objs := spdif_transmitter.o snd-soc-spdif-rx-objs := spdif_receiver.o +snd-soc-src4xxx-objs := src4xxx.o +snd-soc-src4xxx-i2c-objs := src4xxx-i2c.o snd-soc-ssm2305-objs := ssm2305.o snd-soc-ssm2518-objs := ssm2518.o snd-soc-ssm2602-objs := ssm2602.o @@ -579,6 +581,8 @@ obj-$(CONFIG_SND_SOC_SIGMADSP_I2C) += snd-soc-sigmadsp-i2c.o obj-$(CONFIG_SND_SOC_SIGMADSP_REGMAP) += snd-soc-sigmadsp-regmap.o obj-$(CONFIG_SND_SOC_SI476X) += snd-soc-si476x.o obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif-rx.o snd-soc-spdif-tx.o +obj-$(CONFIG_SND_SOC_SRC4XXX) += snd-soc-src4xxx.o +obj-$(CONFIG_SND_SOC_SRC4XXX_I2C) += snd-soc-src4xxx-i2c.o obj-$(CONFIG_SND_SOC_SSM2305) += snd-soc-ssm2305.o obj-$(CONFIG_SND_SOC_SSM2518) += snd-soc-ssm2518.o obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o diff --git a/sound/soc/codecs/src4xxx-i2c.c b/sound/soc/codecs/src4xxx-i2c.c new file mode 100644 index 000000000000..a42d1b463dbf --- /dev/null +++ b/sound/soc/codecs/src4xxx-i2c.c @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Driver for SRC4XXX codecs + * + * Copyright 2021-2022 Deqx Pty Ltd + * Author: Matt Flax flatmax@flatmax.com + */ + +#include <linux/i2c.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/regmap.h> + +#include "src4xxx.h" + +static int src4xxx_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + return src4xxx_probe(&i2c->dev, + devm_regmap_init_i2c(i2c, &src4xxx_regmap_config), NULL); +} + +static int src4xxx_i2c_remove(struct i2c_client *i2c) +{ + src4xxx_remove(&i2c->dev); + return 0; +} + +static const struct i2c_device_id src4xxx_i2c_ids[] = { + { "src4392", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, src4xxx_i2c_ids); + +static const struct of_device_id src4xxx_of_match[] = { + { .compatible = "ti,src4392", }, + { } +}; +MODULE_DEVICE_TABLE(of, src4xxx_of_match); + + +static struct i2c_driver src4xxx_i2c_driver = { + .driver = { + .name = "src4xxx", + .of_match_table = of_match_ptr(src4xxx_of_match), + }, + .probe = src4xxx_i2c_probe, + .remove = src4xxx_i2c_remove, + .id_table = src4xxx_i2c_ids, +}; +module_i2c_driver(src4xxx_i2c_driver); + +MODULE_DESCRIPTION("ASoC SRC4392 CODEC I2C driver"); +MODULE_AUTHOR("Matt Flax flatmax@flatmax.com"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/src4xxx.c b/sound/soc/codecs/src4xxx.c new file mode 100644 index 000000000000..46f693a59186 --- /dev/null +++ b/sound/soc/codecs/src4xxx.c @@ -0,0 +1,508 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * TI SRC4xxx Audio Codec driver + * + * Copyright 2021-2022 Deqx Pty Ltd + * Author: Matt Flax flatmax@flatmax.com + */ + +#include <linux/module.h> + +#include <sound/soc.h> +#include <sound/tlv.h> + +#include "src4xxx.h" + +struct src4xxx { + struct regmap *regmap; + bool master[2]; + int mclk_hz; + struct device *dev; +}; + +enum {SRC4XXX_PORTA, SRC4XXX_PORTB}; + +/* SRC attenuation */ +static const DECLARE_TLV_DB_SCALE(src_tlv, -12750, 50, 0); + +static const struct snd_kcontrol_new src4xxx_controls[] = { + SOC_DOUBLE_R_TLV("SRC vol", + SRC4XXX_SCR_CTL_30, SRC4XXX_SCR_CTL_31, 0, 255, 1, src_tlv), +}; + +/* I2S port control */ +static const char * const port_out_src_text[] = { + "loopback", "other_port", "DIR", "SRC" +}; +static SOC_ENUM_SINGLE_DECL(porta_out_src_enum, SRC4XXX_PORTA_CTL_03, 4, + port_out_src_text); +static SOC_ENUM_SINGLE_DECL(portb_out_src_enum, SRC4XXX_PORTB_CTL_05, 4, + port_out_src_text); +static const struct snd_kcontrol_new porta_out_control = + SOC_DAPM_ENUM("Port A source select", porta_out_src_enum); +static const struct snd_kcontrol_new portb_out_control = + SOC_DAPM_ENUM("Port B source select", portb_out_src_enum); + +/* Digital audio transmitter control */ +static const char * const dit_mux_text[] = {"Port A", "Port B", "DIR", "SRC"}; +static SOC_ENUM_SINGLE_DECL(dit_mux_enum, SRC4XXX_TX_CTL_07, 3, dit_mux_text); +static const struct snd_kcontrol_new dit_mux_control = + SOC_DAPM_ENUM("DIT source", dit_mux_enum); + +/* SRC control */ +static const char * const src_in_text[] = {"Port A", "Port B", "DIR"}; +static SOC_ENUM_SINGLE_DECL(src_in_enum, SRC4XXX_SCR_CTL_2D, 0, src_in_text); +static const struct snd_kcontrol_new src_in_control = + SOC_DAPM_ENUM("SRC source select", src_in_enum); + +/* DIR control */ +static const char * const dir_in_text[] = {"Ch 1", "Ch 2", "Ch 3", "Ch 4"}; +static SOC_ENUM_SINGLE_DECL(dir_in_enum, SRC4XXX_RCV_CTL_0D, 0, dir_in_text); +static const struct snd_kcontrol_new dir_in_control = + SOC_DAPM_ENUM("Digital Input", dir_in_enum); + +static const struct snd_soc_dapm_widget src4xxx_dapm_widgets[] = { + SND_SOC_DAPM_INPUT("loopback_A"), + SND_SOC_DAPM_INPUT("other_port_A"), + SND_SOC_DAPM_INPUT("DIR_A"), + SND_SOC_DAPM_INPUT("SRC_A"), + SND_SOC_DAPM_MUX("Port A source", + SND_SOC_NOPM, 0, 0, &porta_out_control), + + SND_SOC_DAPM_INPUT("loopback_B"), + SND_SOC_DAPM_INPUT("other_port_B"), + SND_SOC_DAPM_INPUT("DIR_B"), + SND_SOC_DAPM_INPUT("SRC_B"), + SND_SOC_DAPM_MUX("Port B source", + SND_SOC_NOPM, 0, 0, &portb_out_control), + + SND_SOC_DAPM_INPUT("Port_A"), + SND_SOC_DAPM_INPUT("Port_B"), + SND_SOC_DAPM_INPUT("DIR_"), + + /* Digital audio receivers and transmitters */ + SND_SOC_DAPM_OUTPUT("DIR_OUT"), + SND_SOC_DAPM_OUTPUT("SRC_OUT"), + SND_SOC_DAPM_MUX("DIT Out Src", SRC4XXX_PWR_RST_01, + SRC4XXX_ENABLE_DIT_SHIFT, 1, &dit_mux_control), + + /* Audio Interface */ + SND_SOC_DAPM_AIF_IN("AIF_A_RX", "Playback A", 0, + SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_A_SHIFT, 1), + SND_SOC_DAPM_AIF_OUT("AIF_A_TX", "Capture A", 0, + SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_A_SHIFT, 1), + SND_SOC_DAPM_AIF_IN("AIF_B_RX", "Playback B", 0, + SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_B_SHIFT, 1), + SND_SOC_DAPM_AIF_OUT("AIF_B_TX", "Capture B", 0, + SRC4XXX_PWR_RST_01, SRC4XXX_ENABLE_PORT_B_SHIFT, 1), + + SND_SOC_DAPM_MUX("SRC source", SND_SOC_NOPM, 0, 0, &src_in_control), + + SND_SOC_DAPM_INPUT("MCLK"), + SND_SOC_DAPM_INPUT("RXMCLKI"), + SND_SOC_DAPM_INPUT("RXMCLKO"), + + SND_SOC_DAPM_INPUT("RX1"), + SND_SOC_DAPM_INPUT("RX2"), + SND_SOC_DAPM_INPUT("RX3"), + SND_SOC_DAPM_INPUT("RX4"), + SND_SOC_DAPM_MUX("Digital Input", SRC4XXX_PWR_RST_01, + SRC4XXX_ENABLE_DIR_SHIFT, 1, &dir_in_control), +}; + +static const struct snd_soc_dapm_route src4xxx_audio_routes[] = { + /* I2S Input to Output Routing */ + {"Port A source", "loopback", "loopback_A"}, + {"Port A source", "other_port", "other_port_A"}, + {"Port A source", "DIR", "DIR_A"}, + {"Port A source", "SRC", "SRC_A"}, + {"Port B source", "loopback", "loopback_B"}, + {"Port B source", "other_port", "other_port_B"}, + {"Port B source", "DIR", "DIR_B"}, + {"Port B source", "SRC", "SRC_B"}, + /* DIT muxing */ + {"DIT Out Src", "Port A", "Capture A"}, + {"DIT Out Src", "Port B", "Capture B"}, + {"DIT Out Src", "DIR", "DIR_OUT"}, + {"DIT Out Src", "SRC", "SRC_OUT"}, + + /* SRC input selection */ + {"SRC source", "Port A", "Port_A"}, + {"SRC source", "Port B", "Port_B"}, + {"SRC source", "DIR", "DIR_"}, + /* SRC mclk selection */ + {"SRC mclk source", "Master (MCLK)", "MCLK"}, + {"SRC mclk source", "Master (RXCLKI)", "RXMCLKI"}, + {"SRC mclk source", "Recovered receiver clk", "RXMCLKO"}, + /* DIR input selection */ + {"Digital Input", "Ch 1", "RX1"}, + {"Digital Input", "Ch 2", "RX2"}, + {"Digital Input", "Ch 3", "RX3"}, + {"Digital Input", "Ch 4", "RX4"}, +}; + + +static const struct snd_soc_component_driver src4xxx_driver = { + .controls = src4xxx_controls, + .num_controls = ARRAY_SIZE(src4xxx_controls), + + .dapm_widgets = src4xxx_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(src4xxx_dapm_widgets), + .dapm_routes = src4xxx_audio_routes, + .num_dapm_routes = ARRAY_SIZE(src4xxx_audio_routes), +}; + +static int src4xxx_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component = dai->component; + struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component); + unsigned int ctrl; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + ctrl = SRC4XXX_BUS_MASTER; + src4xxx->master[dai->id] = true; + break; + case SND_SOC_DAIFMT_CBS_CFS: + ctrl = 0; + src4xxx->master[dai->id] = false; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + ctrl |= SRC4XXX_BUS_I2S; + break; + case SND_SOC_DAIFMT_LEFT_J: + ctrl |= SRC4XXX_BUS_LEFT_J; + break; + case SND_SOC_DAIFMT_RIGHT_J: + ctrl |= SRC4XXX_BUS_RIGHT_J_24; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + default: + return -EINVAL; + } + + regmap_update_bits(src4xxx->regmap, SRC4XXX_BUS_FMT(dai->id), + SRC4XXX_BUS_FMT_MS_MASK, ctrl); + + return 0; +} + +static int src4xxx_set_mclk_hz(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_component *component = codec_dai->component; + struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component); + + dev_info(component->dev, "changing mclk rate from %d to %d Hz\n", + src4xxx->mclk_hz, freq); + src4xxx->mclk_hz = freq; + + return 0; +} + +static int src4xxx_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct src4xxx *src4xxx = snd_soc_component_get_drvdata(component); + unsigned int mclk_div; + int val, pj, jd, d; + int reg; + int ret; + + switch (dai->id) { + case SRC4XXX_PORTB: + reg = SRC4XXX_PORTB_CTL_06; + break; + default: + reg = SRC4XXX_PORTA_CTL_04; + } + + if (src4xxx->master[dai->id]) { + mclk_div = src4xxx->mclk_hz/params_rate(params); + if (src4xxx->mclk_hz != mclk_div*params_rate(params)) { + dev_err(component->dev, + "mclk %d / rate %d has a remainder.\n", + src4xxx->mclk_hz, params_rate(params)); + return -EINVAL; + } + + val = ((int)mclk_div - 128) / 128; + if ((val < 0) | (val > 3)) { + dev_err(component->dev, + "div register setting %d is out of range\n", + val); + dev_err(component->dev, + "unsupported sample rate %d Hz for the master clock of %d Hz\n", + params_rate(params), src4xxx->mclk_hz); + return -EINVAL; + } + + /* set the TX DIV */ + ret = regmap_update_bits(src4xxx->regmap, + SRC4XXX_TX_CTL_07, SRC4XXX_TX_MCLK_DIV_MASK, + val<<SRC4XXX_TX_MCLK_DIV_SHIFT); + if (ret) { + dev_err(component->dev, + "Couldn't set the TX's div register to %d << %d = 0x%x\n", + val, SRC4XXX_TX_MCLK_DIV_SHIFT, + val<<SRC4XXX_TX_MCLK_DIV_SHIFT); + return ret; + } + + /* set the PLL for the digital receiver */ + switch (src4xxx->mclk_hz) { + case 24576000: + pj = 0x22; + jd = 0x00; + d = 0x00; + break; + case 22579200: + pj = 0x22; + jd = 0x1b; + d = 0xa3; + break; + default: + /* don't error out here, + * other parts of the chip are still functional + */ + dev_info(component->dev, + "Couldn't set the RCV PLL as this master clock rate is unknown\n"); + } + ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F, pj); + if (ret < 0) + dev_err(component->dev, + "Failed to update PLL register 0x%x\n", + SRC4XXX_RCV_PLL_0F); + ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_10, jd); + if (ret < 0) + dev_err(component->dev, + "Failed to update PLL register 0x%x\n", + SRC4XXX_RCV_PLL_10); + ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_11, d); + if (ret < 0) + dev_err(component->dev, + "Failed to update PLL register 0x%x\n", + SRC4XXX_RCV_PLL_11); + + ret = regmap_update_bits(src4xxx->regmap, + SRC4XXX_TX_CTL_07, SRC4XXX_TX_MCLK_DIV_MASK, + val<<SRC4XXX_TX_MCLK_DIV_SHIFT); + if (ret < 0) { + dev_err(component->dev, + "Couldn't set the TX's div register to %d << %d = 0x%x\n", + val, SRC4XXX_TX_MCLK_DIV_SHIFT, + val<<SRC4XXX_TX_MCLK_DIV_SHIFT); + return ret; + } + + return regmap_update_bits(src4xxx->regmap, reg, + SRC4XXX_MCLK_DIV_MASK, val); + } else + dev_info(dai->dev, "not setting up MCLK as not master\n"); + + return 0; +}; + +static const struct snd_soc_dai_ops src4xxx_dai_ops = { + .hw_params = src4xxx_hw_params, + .set_sysclk = src4xxx_set_mclk_hz, + .set_fmt = src4xxx_set_dai_fmt, +}; + +#define SRC4XXX_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE) +#define SRC4XXX_RATES (SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000|\ + SNDRV_PCM_RATE_88200|\ + SNDRV_PCM_RATE_96000|\ + SNDRV_PCM_RATE_176400|\ + SNDRV_PCM_RATE_192000) + +static struct snd_soc_dai_driver src4xxx_dai_driver[] = { + { + .id = SRC4XXX_PORTA, + .name = "src4xxx-portA", + .playback = { + .stream_name = "Playback A", + .channels_min = 2, + .channels_max = 2, + .rates = SRC4XXX_RATES, + .formats = SRC4XXX_FORMATS, + }, + .capture = { + .stream_name = "Capture A", + .channels_min = 2, + .channels_max = 2, + .rates = SRC4XXX_RATES, + .formats = SRC4XXX_FORMATS, + }, + .ops = &src4xxx_dai_ops, + }, + { + .id = SRC4XXX_PORTB, + .name = "src4xxx-portB", + .playback = { + .stream_name = "Playback B", + .channels_min = 2, + .channels_max = 2, + .rates = SRC4XXX_RATES, + .formats = SRC4XXX_FORMATS, + }, + .capture = { + .stream_name = "Capture B", + .channels_min = 2, + .channels_max = 2, + .rates = SRC4XXX_RATES, + .formats = SRC4XXX_FORMATS, + }, + .ops = &src4xxx_dai_ops, + }, +}; + +static const struct reg_default src4xxx_reg_defaults[] = { + { SRC4XXX_PWR_RST_01, 0x00 }, /* all powered down intially */ + { SRC4XXX_PORTA_CTL_03, 0x00 }, + { SRC4XXX_PORTA_CTL_04, 0x00 }, + { SRC4XXX_PORTB_CTL_05, 0x00 }, + { SRC4XXX_PORTB_CTL_06, 0x00 }, + { SRC4XXX_TX_CTL_07, 0x00 }, + { SRC4XXX_TX_CTL_08, 0x00 }, + { SRC4XXX_TX_CTL_09, 0x00 }, + { SRC4XXX_SRC_DIT_IRQ_MSK_0B, 0x00 }, + { SRC4XXX_SRC_DIT_IRQ_MODE_0C, 0x00 }, + { SRC4XXX_RCV_CTL_0D, 0x00 }, + { SRC4XXX_RCV_CTL_0E, 0x00 }, + { SRC4XXX_RCV_PLL_0F, 0x00 }, /* not spec. in the datasheet */ + { SRC4XXX_RCV_PLL_10, 0xff }, /* not spec. in the datasheet */ + { SRC4XXX_RCV_PLL_11, 0xff }, /* not spec. in the datasheet */ + { SRC4XXX_RVC_IRQ_MSK_16, 0x00 }, + { SRC4XXX_RVC_IRQ_MSK_17, 0x00 }, + { SRC4XXX_RVC_IRQ_MODE_18, 0x00 }, + { SRC4XXX_RVC_IRQ_MODE_19, 0x00 }, + { SRC4XXX_RVC_IRQ_MODE_1A, 0x00 }, + { SRC4XXX_GPIO_1_1B, 0x00 }, + { SRC4XXX_GPIO_2_1C, 0x00 }, + { SRC4XXX_GPIO_3_1D, 0x00 }, + { SRC4XXX_GPIO_4_1E, 0x00 }, + { SRC4XXX_SCR_CTL_2D, 0x00 }, + { SRC4XXX_SCR_CTL_2E, 0x00 }, + { SRC4XXX_SCR_CTL_2F, 0x00 }, + { SRC4XXX_SCR_CTL_30, 0x00 }, + { SRC4XXX_SCR_CTL_31, 0x00 }, +}; + +int src4xxx_probe(struct device *dev, struct regmap *regmap, + void (*switch_mode)(struct device *dev)) +{ + struct src4xxx *src4xxx; + int ret; + + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + src4xxx = devm_kzalloc(dev, sizeof(*src4xxx), GFP_KERNEL); + if (!src4xxx) + return -ENOMEM; + + src4xxx->regmap = regmap; + src4xxx->dev = dev; + src4xxx->mclk_hz = 0; /* mclk has not been configured yet */ + dev_set_drvdata(dev, src4xxx); + + ret = regmap_write(regmap, SRC4XXX_PWR_RST_01, SRC4XXX_RESET); + if (ret < 0) + dev_err(dev, "Failed to issue reset: %d\n", ret); + usleep_range(1, 500); /* sleep for more then 500 ns */ + ret = regmap_write(regmap, SRC4XXX_PWR_RST_01, SRC4XXX_POWER_DOWN); + if (ret < 0) + dev_err(dev, "Failed to decommission reset: %d\n", ret); + usleep_range(500, 1000); /* sleep for 500 us or more */ + + ret = regmap_update_bits(src4xxx->regmap, SRC4XXX_PWR_RST_01, + SRC4XXX_POWER_ENABLE, SRC4XXX_POWER_ENABLE); + if (ret < 0) + dev_err(dev, "Failed to port A and B : %d\n", ret); + + /* set receiver to use master clock (rcv mclk is most likely jittery) */ + ret = regmap_update_bits(src4xxx->regmap, SRC4XXX_RCV_CTL_0D, + SRC4XXX_RXCLK_MCLK, SRC4XXX_RXCLK_MCLK); + if (ret < 0) + dev_err(dev, + "Failed to enable mclk as the PLL1 DIR reference : %d\n", ret); + + /* default to leaving the PLL2 running on loss of lock, divide by 8 */ + ret = regmap_update_bits(src4xxx->regmap, SRC4XXX_RCV_CTL_0E, + SRC4XXX_PLL2_DIV_8 | SRC4XXX_REC_MCLK_EN | SRC4XXX_PLL2_LOL, + SRC4XXX_PLL2_DIV_8 | SRC4XXX_REC_MCLK_EN | SRC4XXX_PLL2_LOL); + if (ret < 0) + dev_err(dev, "Failed to enable mclk rec and div : %d\n", ret); + + ret = devm_snd_soc_register_component(dev, &src4xxx_driver, + src4xxx_dai_driver, ARRAY_SIZE(src4xxx_dai_driver)); + if (ret == 0) + dev_info(dev, "src4392 probe ok %d\n", ret); + return ret; +} +EXPORT_SYMBOL_GPL(src4xxx_probe); + +static bool src4xxx_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case SRC4XXX_RES_00: + case SRC4XXX_GLOBAL_ITR_STS_02: + case SRC4XXX_SRC_DIT_STS_0A: + case SRC4XXX_NON_AUDIO_D_12: + case SRC4XXX_RVC_STS_13: + case SRC4XXX_RVC_STS_14: + case SRC4XXX_RVC_STS_15: + case SRC4XXX_SUB_CODE_1F: + case SRC4XXX_SUB_CODE_20: + case SRC4XXX_SUB_CODE_21: + case SRC4XXX_SUB_CODE_22: + case SRC4XXX_SUB_CODE_23: + case SRC4XXX_SUB_CODE_24: + case SRC4XXX_SUB_CODE_25: + case SRC4XXX_SUB_CODE_26: + case SRC4XXX_SUB_CODE_27: + case SRC4XXX_SUB_CODE_28: + case SRC4XXX_PC_PREAMBLE_HI_29: + case SRC4XXX_PC_PREAMBLE_LO_2A: + case SRC4XXX_PD_PREAMBLE_HI_2B: + case SRC4XXX_PC_PREAMBLE_LO_2C: + case SRC4XXX_IO_RATIO_32: + case SRC4XXX_IO_RATIO_33: + return true; + } + + if (reg > SRC4XXX_IO_RATIO_33 && reg < SRC4XXX_PAGE_SEL_7F) + return true; + + return false; +} + +const struct regmap_config src4xxx_regmap_config = { + .val_bits = 8, + .reg_bits = 8, + .max_register = SRC4XXX_IO_RATIO_33, + + .reg_defaults = src4xxx_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(src4xxx_reg_defaults), + .volatile_reg = src4xxx_volatile_register, + .cache_type = REGCACHE_RBTREE, +}; +EXPORT_SYMBOL_GPL(src4xxx_regmap_config); + +MODULE_DESCRIPTION("ASoC SRC4XXX CODEC driver"); +MODULE_AUTHOR("Matt Flax flatmax@flatmax.com"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/src4xxx.h b/sound/soc/codecs/src4xxx.h new file mode 100644 index 000000000000..0407db8a8445 --- /dev/null +++ b/sound/soc/codecs/src4xxx.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * src4xxx.h -- SRC4XXX ALSA SoC audio driver + * + * Copyright 2021-2022 Deqx Pty Ltd + * Author: Matt R Flax flatmax@flatmax.com + */ + +#ifndef __SRC4XXX_H__ +#define __SRC4XXX_H__ + +#define SRC4XXX_RES_00 0x00 +#define SRC4XXX_PWR_RST_01 0x01 +#define SRC4XXX_RESET 0x80 +#define SRC4XXX_POWER_DOWN 0x00 +#define SRC4XXX_POWER_ENABLE 0x20 +#define SRC4XXX_ENABLE_SRC 0x1 +#define SRC4XXX_ENABLE_SRC_SHIFT 0 +#define SRC4XXX_ENABLE_DIR 0x2 +#define SRC4XXX_ENABLE_DIR_SHIFT 1 +#define SRC4XXX_ENABLE_DIT 0x4 +#define SRC4XXX_ENABLE_DIT_SHIFT 2 +#define SRC4XXX_ENABLE_PORT_B 0x8 +#define SRC4XXX_ENABLE_PORT_B_SHIFT 3 +#define SRC4XXX_ENABLE_PORT_A 0x10 +#define SRC4XXX_ENABLE_PORT_A_SHIFT 4 + +#define SRC4XXX_PORTA_CTL_03 0x03 +#define SRC4XXX_BUS_MASTER 0x8 +#define SRC4XXX_BUS_LEFT_J 0x0 +#define SRC4XXX_BUS_I2S 0x1 +#define SRC4XXX_BUS_RIGHT_J_16 0x4 +#define SRC4XXX_BUS_RIGHT_J_18 0x5 +#define SRC4XXX_BUS_RIGHT_J_20 0x6 +#define SRC4XXX_BUS_RIGHT_J_24 0x7 +#define SRC4XXX_BUS_FMT_MS_MASK 0xf + +#define SRC4XXX_PORTA_CTL_04 0x04 +#define SRC4XXX_MCLK_DIV_MASK 0x3 + +#define SRC4XXX_BUS_FMT(id) (SRC4XXX_PORTA_CTL_03+2*id) +#define SRC4XXX_BUS_CLK(id) (SRC4XXX_PORTA_CTL_04+2*id) + +#define SRC4XXX_PORTB_CTL_05 0x05 +#define SRC4XXX_PORTB_CTL_06 0x06 + +#define SRC4XXX_TX_CTL_07 0x07 +#define SRC4XXX_TX_MCLK_DIV_MASK 0x60 +#define SRC4XXX_TX_MCLK_DIV_SHIFT 5 + +#define SRC4XXX_TX_CTL_08 0x08 +#define SRC4XXX_TX_CTL_09 0x09 +#define SRC4XXX_SRC_DIT_IRQ_MSK_0B 0x0B +#define SRC4XXX_SRC_BTI_EN 0x01 +#define SRC4XXX_SRC_TSLIP_EN 0x02 +#define SRC4XXX_SRC_DIT_IRQ_MODE_0C 0x0C +#define SRC4XXX_RCV_CTL_0D 0x0D +#define SRC4XXX_RXCLK_RXCKI 0x0 +#define SRC4XXX_RXCLK_MCLK 0x8 +#define SRC4XXX_RCV_CTL_0E 0x0E +#define SRC4XXX_REC_MCLK_EN 0x1 +#define SRC4XXX_PLL2_DIV_0 (0x0<<1) +#define SRC4XXX_PLL2_DIV_2 (0x1<<1) +#define SRC4XXX_PLL2_DIV_4 (0x2<<1) +#define SRC4XXX_PLL2_DIV_8 (0x3<<1) +#define SRC4XXX_PLL2_LOL 0x8 +#define SRC4XXX_RCV_PLL_0F 0x0F +#define SRC4XXX_RCV_PLL_10 0x10 +#define SRC4XXX_RCV_PLL_11 0x11 +#define SRC4XXX_RVC_IRQ_MSK_16 0x16 +#define SRC4XXX_RVC_IRQ_MSK_17 0x17 +#define SRC4XXX_RVC_IRQ_MODE_18 0x18 +#define SRC4XXX_RVC_IRQ_MODE_19 0x19 +#define SRC4XXX_RVC_IRQ_MODE_1A 0x1A +#define SRC4XXX_GPIO_1_1B 0x1B +#define SRC4XXX_GPIO_2_1C 0x1C +#define SRC4XXX_GPIO_3_1D 0x1D +#define SRC4XXX_GPIO_4_1E 0x1E +#define SRC4XXX_SCR_CTL_2D 0x2D +#define SRC4XXX_SCR_CTL_2E 0x2E +#define SRC4XXX_SCR_CTL_2F 0x2F +#define SRC4XXX_SCR_CTL_30 0x30 +#define SRC4XXX_SCR_CTL_31 0x31 +#define SRC4XXX_PAGE_SEL_7F 0x7F + +// read only registers +#define SRC4XXX_GLOBAL_ITR_STS_02 0x02 +#define SRC4XXX_SRC_DIT_STS_0A 0x0A +#define SRC4XXX_NON_AUDIO_D_12 0x12 +#define SRC4XXX_RVC_STS_13 0x13 +#define SRC4XXX_RVC_STS_14 0x14 +#define SRC4XXX_RVC_STS_15 0x15 +#define SRC4XXX_SUB_CODE_1F 0x1F +#define SRC4XXX_SUB_CODE_20 0x20 +#define SRC4XXX_SUB_CODE_21 0x21 +#define SRC4XXX_SUB_CODE_22 0x22 +#define SRC4XXX_SUB_CODE_23 0x23 +#define SRC4XXX_SUB_CODE_24 0x24 +#define SRC4XXX_SUB_CODE_25 0x25 +#define SRC4XXX_SUB_CODE_26 0x26 +#define SRC4XXX_SUB_CODE_27 0x27 +#define SRC4XXX_SUB_CODE_28 0x28 +#define SRC4XXX_PC_PREAMBLE_HI_29 0x29 +#define SRC4XXX_PC_PREAMBLE_LO_2A 0x2A +#define SRC4XXX_PD_PREAMBLE_HI_2B 0x2B +#define SRC4XXX_PC_PREAMBLE_LO_2C 0x2C +#define SRC4XXX_IO_RATIO_32 0x32 +#define SRC4XXX_IO_RATIO_33 0x33 + +int src4xxx_probe(struct device *dev, struct regmap *regmap, + void (*switch_mode)(struct device *dev)); +void src4xxx_remove(struct device *dev); +extern const struct regmap_config src4xxx_regmap_config; + +#endif /* __SRC4XXX_H__ */