diff options
Diffstat (limited to 'sound/soc/codecs/idt821034.c')
| -rw-r--r-- | sound/soc/codecs/idt821034.c | 1178 |
1 files changed, 1178 insertions, 0 deletions
diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c new file mode 100644 index 000000000000..2cc7b9166e69 --- /dev/null +++ b/sound/soc/codecs/idt821034.c @@ -0,0 +1,1178 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// IDT821034 ALSA SoC driver +// +// Copyright 2022 CS GROUP France +// +// Author: Herve Codina <herve.codina@bootlin.com> + +#include <linux/bitrev.h> +#include <linux/gpio/driver.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/spi/spi.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/tlv.h> + +#define IDT821034_NB_CHANNEL 4 + +struct idt821034_amp { + u16 gain; + bool is_muted; +}; + +struct idt821034 { + struct spi_device *spi; + struct mutex mutex; + u8 spi_tx_buf; /* Cannot use stack area for SPI (dma-safe memory) */ + u8 spi_rx_buf; /* Cannot use stack area for SPI (dma-safe memory) */ + struct { + u8 codec_conf; + struct { + u8 power; + u8 tx_slot; + u8 rx_slot; + u8 slic_conf; + u8 slic_control; + } ch[IDT821034_NB_CHANNEL]; + } cache; + struct { + struct { + struct idt821034_amp amp_out; + struct idt821034_amp amp_in; + } ch[IDT821034_NB_CHANNEL]; + } amps; + int max_ch_playback; + int max_ch_capture; + struct gpio_chip gpio_chip; +}; + +static int idt821034_8bit_write(struct idt821034 *idt821034, u8 val) +{ + struct spi_transfer xfer[] = { + { + .tx_buf = &idt821034->spi_tx_buf, + .len = 1, + }, { + .cs_off = 1, + .tx_buf = &idt821034->spi_tx_buf, + .len = 1, + } + }; + + idt821034->spi_tx_buf = val; + + dev_vdbg(&idt821034->spi->dev, "spi xfer wr 0x%x\n", val); + + return spi_sync_transfer(idt821034->spi, xfer, 2); +} + +static int idt821034_2x8bit_write(struct idt821034 *idt821034, u8 val1, u8 val2) +{ + int ret; + + ret = idt821034_8bit_write(idt821034, val1); + if (ret) + return ret; + return idt821034_8bit_write(idt821034, val2); +} + +static int idt821034_8bit_read(struct idt821034 *idt821034, u8 valw, u8 *valr) +{ + struct spi_transfer xfer[] = { + { + .tx_buf = &idt821034->spi_tx_buf, + .rx_buf = &idt821034->spi_rx_buf, + .len = 1, + }, { + .cs_off = 1, + .tx_buf = &idt821034->spi_tx_buf, + .len = 1, + } + }; + int ret; + + idt821034->spi_tx_buf = valw; + + ret = spi_sync_transfer(idt821034->spi, xfer, 2); + if (ret) + return ret; + + *valr = idt821034->spi_rx_buf; + + dev_vdbg(&idt821034->spi->dev, "spi xfer wr 0x%x, rd 0x%x\n", + valw, *valr); + + return 0; +} + +/* Available mode for the programming sequence */ +#define IDT821034_MODE_CODEC(_ch) (0x80 | ((_ch) << 2)) +#define IDT821034_MODE_SLIC(_ch) (0xD0 | ((_ch) << 2)) +#define IDT821034_MODE_GAIN(_ch) (0xC0 | ((_ch) << 2)) + +/* Power values that can be used in 'power' (can be ORed) */ +#define IDT821034_CONF_PWRUP_TX BIT(1) /* from analog input to PCM */ +#define IDT821034_CONF_PWRUP_RX BIT(0) /* from PCM to analog output */ + +static int idt821034_set_channel_power(struct idt821034 *idt821034, u8 ch, u8 power) +{ + u8 conf; + int ret; + + dev_dbg(&idt821034->spi->dev, "set_channel_power(%u, 0x%x)\n", ch, power); + + conf = IDT821034_MODE_CODEC(ch) | idt821034->cache.codec_conf; + + if (power & IDT821034_CONF_PWRUP_RX) { + ret = idt821034_2x8bit_write(idt821034, + conf | IDT821034_CONF_PWRUP_RX, + idt821034->cache.ch[ch].rx_slot); + if (ret) + return ret; + } + if (power & IDT821034_CONF_PWRUP_TX) { + ret = idt821034_2x8bit_write(idt821034, + conf | IDT821034_CONF_PWRUP_TX, + idt821034->cache.ch[ch].tx_slot); + if (ret) + return ret; + } + if (!(power & (IDT821034_CONF_PWRUP_TX | IDT821034_CONF_PWRUP_RX))) { + ret = idt821034_2x8bit_write(idt821034, conf, 0); + if (ret) + return ret; + } + + idt821034->cache.ch[ch].power = power; + + return 0; +} + +static u8 idt821034_get_channel_power(struct idt821034 *idt821034, u8 ch) +{ + return idt821034->cache.ch[ch].power; +} + +/* Codec configuration values that can be used in 'codec_conf' (can be ORed) */ +#define IDT821034_CONF_ALAW_MODE BIT(5) +#define IDT821034_CONF_DELAY_MODE BIT(4) + +static int idt821034_set_codec_conf(struct idt821034 *idt821034, u8 codec_conf) +{ + u8 conf; + u8 ts; + int ret; + + dev_dbg(&idt821034->spi->dev, "set_codec_conf(0x%x)\n", codec_conf); + + /* codec conf fields are common to all channel. + * Arbitrary use of channel 0 for this configuration. + */ + + /* Set Configuration Register */ + conf = IDT821034_MODE_CODEC(0) | codec_conf; + + /* Update conf value and timeslot register value according + * to cache values + */ + if (idt821034->cache.ch[0].power & IDT821034_CONF_PWRUP_RX) { + conf |= IDT821034_CONF_PWRUP_RX; + ts = idt821034->cache.ch[0].rx_slot; + } else if (idt821034->cache.ch[0].power & IDT821034_CONF_PWRUP_TX) { + conf |= IDT821034_CONF_PWRUP_TX; + ts = idt821034->cache.ch[0].tx_slot; + } else { + ts = 0x00; + } + + /* Write configuration register and time-slot register */ + ret = idt821034_2x8bit_write(idt821034, conf, ts); + if (ret) + return ret; + + idt821034->cache.codec_conf = codec_conf; + return 0; +} + +static u8 idt821034_get_codec_conf(struct idt821034 *idt821034) +{ + return idt821034->cache.codec_conf; +} + +/* Channel direction values that can be used in 'ch_dir' (can be ORed) */ +#define IDT821034_CH_RX BIT(0) /* from PCM to analog output */ +#define IDT821034_CH_TX BIT(1) /* from analog input to PCM */ + +static int idt821034_set_channel_ts(struct idt821034 *idt821034, u8 ch, u8 ch_dir, u8 ts_num) +{ + u8 conf; + int ret; + + dev_dbg(&idt821034->spi->dev, "set_channel_ts(%u, 0x%x, %d)\n", ch, ch_dir, ts_num); + + conf = IDT821034_MODE_CODEC(ch) | idt821034->cache.codec_conf; + + if (ch_dir & IDT821034_CH_RX) { + if (idt821034->cache.ch[ch].power & IDT821034_CONF_PWRUP_RX) { + ret = idt821034_2x8bit_write(idt821034, + conf | IDT821034_CONF_PWRUP_RX, + ts_num); + if (ret) + return ret; + } + idt821034->cache.ch[ch].rx_slot = ts_num; + } + if (ch_dir & IDT821034_CH_TX) { + if (idt821034->cache.ch[ch].power & IDT821034_CONF_PWRUP_TX) { + ret = idt821034_2x8bit_write(idt821034, + conf | IDT821034_CONF_PWRUP_TX, + ts_num); + if (ret) + return ret; + } + idt821034->cache.ch[ch].tx_slot = ts_num; + } + + return 0; +} + +/* SLIC direction values that can be used in 'slic_dir' (can be ORed) */ +#define IDT821034_SLIC_IO1_IN BIT(1) +#define IDT821034_SLIC_IO0_IN BIT(0) + +static int idt821034_set_slic_conf(struct idt821034 *idt821034, u8 ch, u8 slic_dir) +{ + u8 conf; + int ret; + + dev_dbg(&idt821034->spi->dev, "set_slic_conf(%u, 0x%x)\n", ch, slic_dir); + + conf = IDT821034_MODE_SLIC(ch) | slic_dir; + ret = idt821034_2x8bit_write(idt821034, conf, idt821034->cache.ch[ch].slic_control); + if (ret) + return ret; + + idt821034->cache.ch[ch].slic_conf = slic_dir; + + return 0; +} + +static u8 idt821034_get_slic_conf(struct idt821034 *idt821034, u8 ch) +{ + return idt821034->cache.ch[ch].slic_conf; +} + +static int idt821034_write_slic_raw(struct idt821034 *idt821034, u8 ch, u8 slic_raw) +{ + u8 conf; + int ret; + + dev_dbg(&idt821034->spi->dev, "write_slic_raw(%u, 0x%x)\n", ch, slic_raw); + + /* + * On write, slic_raw is mapped as follow : + * b4: O_4 + * b3: O_3 + * b2: O_2 + * b1: I/O_1 + * b0: I/O_0 + */ + + conf = IDT821034_MODE_SLIC(ch) | idt821034->cache.ch[ch].slic_conf; + ret = idt821034_2x8bit_write(idt821034, conf, slic_raw); + if (ret) + return ret; + + idt821034->cache.ch[ch].slic_control = slic_raw; + return 0; +} + +static u8 idt821034_get_written_slic_raw(struct idt821034 *idt821034, u8 ch) +{ + return idt821034->cache.ch[ch].slic_control; +} + +static int idt821034_read_slic_raw(struct idt821034 *idt821034, u8 ch, u8 *slic_raw) +{ + u8 val; + int ret; + + /* + * On read, slic_raw is mapped as follow : + * b7: I/O_0 + * b6: I/O_1 + * b5: O_2 + * b4: O_3 + * b3: O_4 + * b2: I/O1_0, I/O_0 from channel 1 (no matter ch value) + * b1: I/O2_0, I/O_0 from channel 2 (no matter ch value) + * b2: I/O3_0, I/O_0 from channel 3 (no matter ch value) + */ + + val = IDT821034_MODE_SLIC(ch) | idt821034->cache.ch[ch].slic_conf; + ret = idt821034_8bit_write(idt821034, val); + if (ret) + return ret; + + ret = idt821034_8bit_read(idt821034, idt821034->cache.ch[ch].slic_control, slic_raw); + if (ret) + return ret; + + dev_dbg(&idt821034->spi->dev, "read_slic_raw(%i) 0x%x\n", ch, *slic_raw); + + return 0; +} + +/* Gain type values that can be used in 'gain_type' (cannot be ORed) */ +#define IDT821034_GAIN_RX (0 << 1) /* from PCM to analog output */ +#define IDT821034_GAIN_TX (1 << 1) /* from analog input to PCM */ + +static int idt821034_set_gain_channel(struct idt821034 *idt821034, u8 ch, + u8 gain_type, u16 gain_val) +{ + u8 conf; + int ret; + + dev_dbg(&idt821034->spi->dev, "set_gain_channel(%u, 0x%x, 0x%x-%d)\n", + ch, gain_type, gain_val, gain_val); + + /* + * The gain programming coefficients should be calculated as: + * Transmit : Coeff_X = round [ gain_X0dB × gain_X ] + * Receive: Coeff_R = round [ gain_R0dB × gain_R ] + * where: + * gain_X0dB = 1820; + * gain_X is the target gain; + * Coeff_X should be in the range of 0 to 8192. + * gain_R0dB = 2506; + * gain_R is the target gain; + * Coeff_R should be in the range of 0 to 8192. + * + * A gain programming coefficient is 14-bit wide and in binary format. + * The 7 Most Significant Bits of the coefficient is called + * GA_MSB_Transmit for transmit path, or is called GA_MSB_Receive for + * receive path; The 7 Least Significant Bits of the coefficient is + * called GA_LSB_ Transmit for transmit path, or is called + * GA_LSB_Receive for receive path. + * + * An example is given below to clarify the calculation of the + * coefficient. To program a +3 dB gain in transmit path and a -3.5 dB + * gain in receive path: + * + * Linear Code of +3dB = 10^(3/20)= 1.412537545 + * Coeff_X = round (1820 × 1.412537545) = 2571 + * = 0b001010_00001011 + * GA_MSB_Transmit = 0b0010100 + * GA_LSB_Transmit = 0b0001011 + * + * Linear Code of -3.5dB = 10^(-3.5/20) = 0.668343917 + * Coeff_R= round (2506 × 0.668343917) = 1675 + * = 0b0001101_0001011 + * GA_MSB_Receive = 0b0001101 + * GA_LSB_Receive = 0b0001011 + */ + + conf = IDT821034_MODE_GAIN(ch) | gain_type; + + ret = idt821034_2x8bit_write(idt821034, conf | 0x00, gain_val & 0x007F); + if (ret) + return ret; + + ret = idt821034_2x8bit_write(idt821034, conf | 0x01, (gain_val >> 7) & 0x7F); + if (ret) + return ret; + + return 0; +} + +/* Id helpers used in controls and dapm */ +#define IDT821034_DIR_OUT (1 << 3) +#define IDT821034_DIR_IN (0 << 3) +#define IDT821034_ID(_ch, _dir) (((_ch) & 0x03) | (_dir)) +#define IDT821034_ID_OUT(_ch) IDT821034_ID(_ch, IDT821034_DIR_OUT) +#define IDT821034_ID_IN(_ch) IDT821034_ID(_ch, IDT821034_DIR_IN) + +#define IDT821034_ID_GET_CHAN(_id) ((_id) & 0x03) +#define IDT821034_ID_GET_DIR(_id) ((_id) & (1 << 3)) +#define IDT821034_ID_IS_OUT(_id) (IDT821034_ID_GET_DIR(_id) == IDT821034_DIR_OUT) + +static int idt821034_kctrl_gain_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component); + int min = mc->min; + int max = mc->max; + unsigned int mask = (1 << fls(max)) - 1; + unsigned int invert = mc->invert; + int val; + u8 ch; + + ch = IDT821034_ID_GET_CHAN(mc->reg); + + mutex_lock(&idt821034->mutex); + if (IDT821034_ID_IS_OUT(mc->reg)) + val = idt821034->amps.ch[ch].amp_out.gain; + else + val = idt821034->amps.ch[ch].amp_in.gain; + mutex_unlock(&idt821034->mutex); + + ucontrol->value.integer.value[0] = val & mask; + if (invert) + ucontrol->value.integer.value[0] = max - ucontrol->value.integer.value[0]; + else + ucontrol->value.integer.value[0] = ucontrol->value.integer.value[0] - min; + + return 0; +} + +static int idt821034_kctrl_gain_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component); + struct idt821034_amp *amp; + int min = mc->min; + int max = mc->max; + unsigned int mask = (1 << fls(max)) - 1; + unsigned int invert = mc->invert; + unsigned int val; + int ret; + u8 gain_type; + u8 ch; + + val = ucontrol->value.integer.value[0]; + if (val > max - min) + return -EINVAL; + + if (invert) + val = (max - val) & mask; + else + val = (val + min) & mask; + + ch = IDT821034_ID_GET_CHAN(mc->reg); + + mutex_lock(&idt821034->mutex); + + if (IDT821034_ID_IS_OUT(mc->reg)) { + amp = &idt821034->amps.ch[ch].amp_out; + gain_type = IDT821034_GAIN_RX; + } else { + amp = &idt821034->amps.ch[ch].amp_in; + gain_type = IDT821034_GAIN_TX; + } + + if (amp->gain == val) { + ret = 0; + goto end; + } + + if (!amp->is_muted) { + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, val); + if (ret) + goto end; + } + + amp->gain = val; + ret = 1; /* The value changed */ +end: + mutex_unlock(&idt821034->mutex); + return ret; +} + +static int idt821034_kctrl_mute_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component); + int id = kcontrol->private_value; + bool is_muted; + u8 ch; + + ch = IDT821034_ID_GET_CHAN(id); + + mutex_lock(&idt821034->mutex); + is_muted = IDT821034_ID_IS_OUT(id) ? + idt821034->amps.ch[ch].amp_out.is_muted : + idt821034->amps.ch[ch].amp_in.is_muted; + mutex_unlock(&idt821034->mutex); + + ucontrol->value.integer.value[0] = !is_muted; + + return 0; +} + +static int idt821034_kctrl_mute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component); + int id = kcontrol->private_value; + struct idt821034_amp *amp; + bool is_mute; + u8 gain_type; + int ret; + u8 ch; + + ch = IDT821034_ID_GET_CHAN(id); + is_mute = !ucontrol->value.integer.value[0]; + + mutex_lock(&idt821034->mutex); + + if (IDT821034_ID_IS_OUT(id)) { + amp = &idt821034->amps.ch[ch].amp_out; + gain_type = IDT821034_GAIN_RX; + } else { + amp = &idt821034->amps.ch[ch].amp_in; + gain_type = IDT821034_GAIN_TX; + } + + if (amp->is_muted == is_mute) { + ret = 0; + goto end; + } + + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, + is_mute ? 0 : amp->gain); + if (ret) + goto end; + + amp->is_muted = is_mute; + ret = 1; /* The value changed */ +end: + mutex_unlock(&idt821034->mutex); + return ret; +} + +static const DECLARE_TLV_DB_LINEAR(idt821034_gain_in, -6520, 1306); +#define IDT821034_GAIN_IN_MIN_RAW 1 /* -65.20 dB -> 10^(-65.2/20.0) * 1820 = 1 */ +#define IDT821034_GAIN_IN_MAX_RAW 8191 /* 13.06 dB -> 10^(13.06/20.0) * 1820 = 8191 */ +#define IDT821034_GAIN_IN_INIT_RAW 1820 /* 0dB -> 10^(0/20) * 1820 = 1820 */ + +static const DECLARE_TLV_DB_LINEAR(idt821034_gain_out, -6798, 1029); +#define IDT821034_GAIN_OUT_MIN_RAW 1 /* -67.98 dB -> 10^(-67.98/20.0) * 2506 = 1*/ +#define IDT821034_GAIN_OUT_MAX_RAW 8191 /* 10.29 dB -> 10^(10.29/20.0) * 2506 = 8191 */ +#define IDT821034_GAIN_OUT_INIT_RAW 2506 /* 0dB -> 10^(0/20) * 2506 = 2506 */ + +static const struct snd_kcontrol_new idt821034_controls[] = { + /* DAC volume control */ + SOC_SINGLE_RANGE_EXT_TLV("DAC0 Playback Volume", IDT821034_ID_OUT(0), 0, + IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_out), + SOC_SINGLE_RANGE_EXT_TLV("DAC1 Playback Volume", IDT821034_ID_OUT(1), 0, + IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_out), + SOC_SINGLE_RANGE_EXT_TLV("DAC2 Playback Volume", IDT821034_ID_OUT(2), 0, + IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_out), + SOC_SINGLE_RANGE_EXT_TLV("DAC3 Playback Volume", IDT821034_ID_OUT(3), 0, + IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_out), + + /* DAC mute control */ + SOC_SINGLE_BOOL_EXT("DAC0 Playback Switch", IDT821034_ID_OUT(0), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + SOC_SINGLE_BOOL_EXT("DAC1 Playback Switch", IDT821034_ID_OUT(1), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + SOC_SINGLE_BOOL_EXT("DAC2 Playback Switch", IDT821034_ID_OUT(2), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + SOC_SINGLE_BOOL_EXT("DAC3 Playback Switch", IDT821034_ID_OUT(3), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + + /* ADC volume control */ + SOC_SINGLE_RANGE_EXT_TLV("ADC0 Capture Volume", IDT821034_ID_IN(0), 0, + IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_in), + SOC_SINGLE_RANGE_EXT_TLV("ADC1 Capture Volume", IDT821034_ID_IN(1), 0, + IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_in), + SOC_SINGLE_RANGE_EXT_TLV("ADC2 Capture Volume", IDT821034_ID_IN(2), 0, + IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_in), + SOC_SINGLE_RANGE_EXT_TLV("ADC3 Capture Volume", IDT821034_ID_IN(3), 0, + IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW, + 0, idt821034_kctrl_gain_get, idt821034_kctrl_gain_put, + idt821034_gain_in), + + /* ADC mute control */ + SOC_SINGLE_BOOL_EXT("ADC0 Capture Switch", IDT821034_ID_IN(0), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + SOC_SINGLE_BOOL_EXT("ADC1 Capture Switch", IDT821034_ID_IN(1), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + SOC_SINGLE_BOOL_EXT("ADC2 Capture Switch", IDT821034_ID_IN(2), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), + SOC_SINGLE_BOOL_EXT("ADC3 Capture Switch", IDT821034_ID_IN(3), + idt821034_kctrl_mute_get, idt821034_kctrl_mute_put), +}; + +static int idt821034_power_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component); + unsigned int id = w->shift; + u8 power, mask; + int ret; + u8 ch; + + ch = IDT821034_ID_GET_CHAN(id); + mask = IDT821034_ID_IS_OUT(id) ? IDT821034_CONF_PWRUP_RX : IDT821034_CONF_PWRUP_TX; + + mutex_lock(&idt821034->mutex); + + power = idt821034_get_channel_power(idt821034, ch); + if (SND_SOC_DAPM_EVENT_ON(event)) + power |= mask; + else + power &= ~mask; + ret = idt821034_set_channel_power(idt821034, ch, power); + + mutex_unlock(&idt821034->mutex); + + return ret; +} + +static const struct snd_soc_dapm_widget idt821034_dapm_widgets[] = { + SND_SOC_DAPM_DAC_E("DAC0", "Playback", SND_SOC_NOPM, IDT821034_ID_OUT(0), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DAC1", "Playback", SND_SOC_NOPM, IDT821034_ID_OUT(1), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DAC2", "Playback", SND_SOC_NOPM, IDT821034_ID_OUT(2), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DAC3", "Playback", SND_SOC_NOPM, IDT821034_ID_OUT(3), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_OUTPUT("OUT0"), + SND_SOC_DAPM_OUTPUT("OUT1"), + SND_SOC_DAPM_OUTPUT("OUT2"), + SND_SOC_DAPM_OUTPUT("OUT3"), + + SND_SOC_DAPM_DAC_E("ADC0", "Capture", SND_SOC_NOPM, IDT821034_ID_IN(0), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("ADC1", "Capture", SND_SOC_NOPM, IDT821034_ID_IN(1), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("ADC2", "Capture", SND_SOC_NOPM, IDT821034_ID_IN(2), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("ADC3", "Capture", SND_SOC_NOPM, IDT821034_ID_IN(3), 0, + idt821034_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_INPUT("IN0"), + SND_SOC_DAPM_INPUT("IN1"), + SND_SOC_DAPM_INPUT("IN2"), + SND_SOC_DAPM_INPUT("IN3"), +}; + +static const struct snd_soc_dapm_route idt821034_dapm_routes[] = { + { "OUT0", NULL, "DAC0" }, + { "OUT1", NULL, "DAC1" }, + { "OUT2", NULL, "DAC2" }, + { "OUT3", NULL, "DAC3" }, + + { "ADC0", NULL, "IN0" }, + { "ADC1", NULL, "IN1" }, + { "ADC2", NULL, "IN2" }, + { "ADC3", NULL, "IN3" }, +}; + +static int idt821034_dai_set_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int width) +{ + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(dai->component); + unsigned int mask; + u8 slot; + int ret; + u8 ch; + + switch (width) { + case 0: /* Not set -> default 8 */ + case 8: + break; + default: + dev_err(dai->dev, "tdm slot width %d not supported\n", width); + return -EINVAL; + } + + mask = tx_mask; + slot = 0; + ch = 0; + while (mask && ch < IDT821034_NB_CHANNEL) { + if (mask & 0x1) { + mutex_lock(&idt821034->mutex); + ret = idt821034_set_channel_ts(idt821034, ch, IDT821034_CH_RX, slot); + mutex_unlock(&idt821034->mutex); + if (ret) { + dev_err(dai->dev, "ch%u set tx tdm slot failed (%d)\n", + ch, ret); + return ret; + } + ch++; + } + mask >>= 1; + slot++; + } + if (mask) { + dev_err(dai->dev, "too much tx slots defined (mask = 0x%x) support max %d\n", + tx_mask, IDT821034_NB_CHANNEL); + return -EINVAL; + } + idt821034->max_ch_playback = ch; + + mask = rx_mask; + slot = 0; + ch = 0; + while (mask && ch < IDT821034_NB_CHANNEL) { + if (mask & 0x1) { + mutex_lock(&idt821034->mutex); + ret = idt821034_set_channel_ts(idt821034, ch, IDT821034_CH_TX, slot); + mutex_unlock(&idt821034->mutex); + if (ret) { + dev_err(dai->dev, "ch%u set rx tdm slot failed (%d)\n", + ch, ret); + return ret; + } + ch++; + } + mask >>= 1; + slot++; + } + if (mask) { + dev_err(dai->dev, "too much rx slots defined (mask = 0x%x) support max %d\n", + rx_mask, IDT821034_NB_CHANNEL); + return -EINVAL; + } + idt821034->max_ch_capture = ch; + + return 0; +} + +static int idt821034_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(dai->component); + u8 conf; + int ret; + + mutex_lock(&idt821034->mutex); + + conf = idt821034_get_codec_conf(idt821034); + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_DSP_A: + conf |= IDT821034_CONF_DELAY_MODE; + break; + case SND_SOC_DAIFMT_DSP_B: + conf &= ~IDT821034_CONF_DELAY_MODE; + break; + default: + dev_err(dai->dev, "Unsupported DAI format 0x%x\n", + fmt & SND_SOC_DAIFMT_FORMAT_MASK); + ret = -EINVAL; + goto end; + } + ret = idt821034_set_codec_conf(idt821034, conf); +end: + mutex_unlock(&idt821034->mutex); + return ret; +} + +static int idt821034_dai_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(dai->component); + u8 conf; + int ret; + + mutex_lock(&idt821034->mutex); + + conf = idt821034_get_codec_conf(idt821034); + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_A_LAW: + conf |= IDT821034_CONF_ALAW_MODE; + break; + case SNDRV_PCM_FORMAT_MU_LAW: + conf &= ~IDT821034_CONF_ALAW_MODE; + break; + default: + dev_err(dai->dev, "Unsupported PCM format 0x%x\n", + params_format(params)); + ret = -EINVAL; + goto end; + } + ret = idt821034_set_codec_conf(idt821034, conf); +end: + mutex_unlock(&idt821034->mutex); + return ret; +} + +static const unsigned int idt821034_sample_bits[] = {8}; + +static struct snd_pcm_hw_constraint_list idt821034_sample_bits_constr = { + .list = idt821034_sample_bits, + .count = ARRAY_SIZE(idt821034_sample_bits), +}; + +static int idt821034_dai_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(dai->component); + unsigned int max_ch = 0; + int ret; + + max_ch = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? + idt821034->max_ch_playback : idt821034->max_ch_capture; + + /* + * Disable stream support (min = 0, max = 0) if no timeslots were + * configured otherwise, limit the number of channels to those + * configured. + */ + ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_CHANNELS, + max_ch ? 1 : 0, max_ch); + if (ret < 0) + return ret; + + ret = snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, + &idt821034_sample_bits_constr); + if (ret) + return ret; + + return 0; +} + +static u64 idt821034_dai_formats[] = { + SND_SOC_POSSIBLE_DAIFMT_DSP_A | + SND_SOC_POSSIBLE_DAIFMT_DSP_B, +}; + +static const struct snd_soc_dai_ops idt821034_dai_ops = { + .startup = idt821034_dai_startup, + .hw_params = idt821034_dai_hw_params, + .set_tdm_slot = idt821034_dai_set_tdm_slot, + .set_fmt = idt821034_dai_set_fmt, + .auto_selectable_formats = idt821034_dai_formats, + .num_auto_selectable_formats = ARRAY_SIZE(idt821034_dai_formats), +}; + +static struct snd_soc_dai_driver idt821034_dai_driver = { + .name = "idt821034", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = IDT821034_NB_CHANNEL, + .rates = SNDRV_PCM_RATE_8000, + .formats = SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = IDT821034_NB_CHANNEL, + .rates = SNDRV_PCM_RATE_8000, + .formats = SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW, + }, + .ops = &idt821034_dai_ops, +}; + +static int idt821034_reset_audio(struct idt821034 *idt821034) +{ + int ret; + u8 i; + + mutex_lock(&idt821034->mutex); + + ret = idt821034_set_codec_conf(idt821034, 0); + if (ret) + goto end; + + for (i = 0; i < IDT821034_NB_CHANNEL; i++) { + idt821034->amps.ch[i].amp_out.gain = IDT821034_GAIN_OUT_INIT_RAW; + idt821034->amps.ch[i].amp_out.is_muted = false; + ret = idt821034_set_gain_channel(idt821034, i, IDT821034_GAIN_RX, + idt821034->amps.ch[i].amp_out.gain); + if (ret) + goto end; + + idt821034->amps.ch[i].amp_in.gain = IDT821034_GAIN_IN_INIT_RAW; + idt821034->amps.ch[i].amp_in.is_muted = false; + ret = idt821034_set_gain_channel(idt821034, i, IDT821034_GAIN_TX, + idt821034->amps.ch[i].amp_in.gain); + if (ret) + goto end; + + ret = idt821034_set_channel_power(idt821034, i, 0); + if (ret) + goto end; + } + + ret = 0; +end: + mutex_unlock(&idt821034->mutex); + return ret; +} + +static int idt821034_component_probe(struct snd_soc_component *component) +{ + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component); + int ret; + + /* reset idt821034 audio part*/ + ret = idt821034_reset_audio(idt821034); + if (ret) + return ret; + + return 0; +} + +static const struct snd_soc_component_driver idt821034_component_driver = { + .probe = idt821034_component_probe, + .controls = idt821034_controls, + .num_controls = ARRAY_SIZE(idt821034_controls), + .dapm_widgets = idt821034_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(idt821034_dapm_widgets), + .dapm_routes = idt821034_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(idt821034_dapm_routes), + .endianness = 1, +}; + +#define IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(_offset) (((_offset) / 5) % 4) +#define IDT821034_GPIO_OFFSET_TO_SLIC_MASK(_offset) BIT((_offset) % 5) + +static void idt821034_chip_gpio_set(struct gpio_chip *c, unsigned int offset, int val) +{ + u8 ch = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset); + u8 mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset); + struct idt821034 *idt821034 = gpiochip_get_data(c); + u8 slic_raw; + int ret; + + mutex_lock(&idt821034->mutex); + + slic_raw = idt821034_get_written_slic_raw(idt821034, ch); + if (val) + slic_raw |= mask; + else + slic_raw &= ~mask; + ret = idt821034_write_slic_raw(idt821034, ch, slic_raw); + if (ret) { + dev_err(&idt821034->spi->dev, "set gpio %d (%u, 0x%x) failed (%d)\n", + offset, ch, mask, ret); + } + + mutex_unlock(&idt821034->mutex); +} + +static int idt821034_chip_gpio_get(struct gpio_chip *c, unsigned int offset) +{ + u8 ch = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset); + u8 mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset); + struct idt821034 *idt821034 = gpiochip_get_data(c); + u8 slic_raw; + int ret; + + mutex_lock(&idt821034->mutex); + ret = idt821034_read_slic_raw(idt821034, ch, &slic_raw); + mutex_unlock(&idt821034->mutex); + if (ret) { + dev_err(&idt821034->spi->dev, "get gpio %d (%u, 0x%x) failed (%d)\n", + offset, ch, mask, ret); + return ret; + } + + /* + * SLIC IOs are read in reverse order compared to write. + * Reverse the read value here in order to have IO0 at lsb (ie same + * order as write) + */ + return !!(bitrev8(slic_raw) & mask); +} + +static int idt821034_chip_get_direction(struct gpio_chip *c, unsigned int offset) +{ + u8 ch = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset); + u8 mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset); + struct idt821034 *idt821034 = gpiochip_get_data(c); + u8 slic_dir; + + mutex_lock(&idt821034->mutex); + slic_dir = idt821034_get_slic_conf(idt821034, ch); + mutex_unlock(&idt821034->mutex); + + return slic_dir & mask ? GPIO_LINE_DIRECTION_IN : GPIO_LINE_DIRECTION_OUT; +} + +static int idt821034_chip_direction_input(struct gpio_chip *c, unsigned int offset) +{ + u8 ch = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset); + u8 mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset); + struct idt821034 *idt821034 = gpiochip_get_data(c); + u8 slic_conf; + int ret; + + /* Only IO0 and IO1 can be set as input */ + if (mask & ~(IDT821034_SLIC_IO1_IN | IDT821034_SLIC_IO0_IN)) + return -EPERM; + + mutex_lock(&idt821034->mutex); + + slic_conf = idt821034_get_slic_conf(idt821034, ch) | mask; + + ret = idt821034_set_slic_conf(idt821034, ch, slic_conf); + if (ret) { + dev_err(&idt821034->spi->dev, "dir in gpio %d (%u, 0x%x) failed (%d)\n", + offset, ch, mask, ret); + } + + mutex_unlock(&idt821034->mutex); + return ret; +} + +static int idt821034_chip_direction_output(struct gpio_chip *c, unsigned int offset, int val) +{ + u8 ch = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset); + u8 mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset); + struct idt821034 *idt821034 = gpiochip_get_data(c); + u8 slic_conf; + int ret; + + idt821034_chip_gpio_set(c, offset, val); + + mutex_lock(&idt821034->mutex); + + slic_conf = idt821034_get_slic_conf(idt821034, ch) & ~mask; + + ret = idt821034_set_slic_conf(idt821034, ch, slic_conf); + if (ret) { + dev_err(&idt821034->spi->dev, "dir in gpio %d (%u, 0x%x) failed (%d)\n", + offset, ch, mask, ret); + } + + mutex_unlock(&idt821034->mutex); + return ret; +} + +static int idt821034_reset_gpio(struct idt821034 *idt821034) +{ + int ret; + u8 i; + + mutex_lock(&idt821034->mutex); + + /* IO0 and IO1 as input for all channels and output IO set to 0 */ + for (i = 0; i < IDT821034_NB_CHANNEL; i++) { + ret = idt821034_set_slic_conf(idt821034, i, + IDT821034_SLIC_IO1_IN | IDT821034_SLIC_IO0_IN); + if (ret) + goto end; + + ret = idt821034_write_slic_raw(idt821034, i, 0); + if (ret) + goto end; + + } + ret = 0; +end: + mutex_unlock(&idt821034->mutex); + return ret; +} + +static int idt821034_gpio_init(struct idt821034 *idt821034) +{ + int ret; + + ret = idt821034_reset_gpio(idt821034); + if (ret) + return ret; + + idt821034->gpio_chip.owner = THIS_MODULE; + idt821034->gpio_chip.label = dev_name(&idt821034->spi->dev); + idt821034->gpio_chip.parent = &idt821034->spi->dev; + idt821034->gpio_chip.base = -1; + idt821034->gpio_chip.ngpio = 5 * 4; /* 5 GPIOs on 4 channels */ + idt821034->gpio_chip.get_direction = idt821034_chip_get_direction; + idt821034->gpio_chip.direction_input = idt821034_chip_direction_input; + idt821034->gpio_chip.direction_output = idt821034_chip_direction_output; + idt821034->gpio_chip.get = idt821034_chip_gpio_get; + idt821034->gpio_chip.set = idt821034_chip_gpio_set; + idt821034->gpio_chip.can_sleep = true; + + return devm_gpiochip_add_data(&idt821034->spi->dev, &idt821034->gpio_chip, + idt821034); +} + +static int idt821034_spi_probe(struct spi_device *spi) +{ + struct idt821034 *idt821034; + int ret; + + spi->bits_per_word = 8; + ret = spi_setup(spi); + if (ret < 0) + return ret; + + idt821034 = devm_kzalloc(&spi->dev, sizeof(*idt821034), GFP_KERNEL); + if (!idt821034) + return -ENOMEM; + + idt821034->spi = spi; + + mutex_init(&idt821034->mutex); + + spi_set_drvdata(spi, idt821034); + + ret = devm_snd_soc_register_component(&spi->dev, &idt821034_component_driver, + &idt821034_dai_driver, 1); + if (ret) + return ret; + + if (IS_ENABLED(CONFIG_GPIOLIB)) + return idt821034_gpio_init(idt821034); + + return 0; +} + +static const struct of_device_id idt821034_of_match[] = { + { .compatible = "renesas,idt821034", }, + { } +}; +MODULE_DEVICE_TABLE(of, idt821034_of_match); + +static const struct spi_device_id idt821034_id_table[] = { + { "idt821034", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, idt821034_id_table); + +static struct spi_driver idt821034_spi_driver = { + .driver = { + .name = "idt821034", + .of_match_table = idt821034_of_match, + }, + .id_table = idt821034_id_table, + .probe = idt821034_spi_probe, +}; + +module_spi_driver(idt821034_spi_driver); + +MODULE_AUTHOR("Herve Codina <herve.codina@bootlin.com>"); +MODULE_DESCRIPTION("IDT821034 ALSA SoC driver"); +MODULE_LICENSE("GPL"); |