| Message ID | 20230120095036.514639-3-herve.codina@bootlin.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add the Renesas IDT821034 codec support | expand |
On Fri, Jan 20, 2023 at 10:50:35AM +0100, Herve Codina wrote: > +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; > + > + amp->gain = val; > + ret = 0; > +end: > + mutex_unlock(&idt821034->mutex); > + return ret; _put() methods should return 1 if the value changed to generate events - if you use the mixer-test selftest it'll spot this and other issues for you. Otherwise this looks fine.
Hi Mark, On Fri, 20 Jan 2023 12:12:44 +0000 Mark Brown <broonie@kernel.org> wrote: > On Fri, Jan 20, 2023 at 10:50:35AM +0100, Herve Codina wrote: > > > +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; > > > + > > + amp->gain = val; > > + ret = 0; > > +end: > > + mutex_unlock(&idt821034->mutex); > > + return ret; > > _put() methods should return 1 if the value changed to generate > events - if you use the mixer-test selftest it'll spot this and > other issues for you. > Thanks for pointing this. I will look at mixer-test and fix the _put() methods return code in v3. > Otherwise this looks fine. Thanks for the review. Best regards, Hervé
Le 20/01/2023 à 10:50, Herve Codina a écrit : > The Renesas IDT821034 codec is four channel PCM codec with on-chip > filters and programmable gain setting. > It also provides SLIC (Subscriber Line Interface Circuit) signals as > GPIOs. > > Signed-off-by: Herve Codina <herve.codina@bootlin.com> > --- > sound/soc/codecs/Kconfig | 12 + > sound/soc/codecs/Makefile | 2 + > sound/soc/codecs/idt821034.c | 1200 ++++++++++++++++++++++++++++++++++ > 3 files changed, 1214 insertions(+) > create mode 100644 sound/soc/codecs/idt821034.c > > diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig > index 0f9d71490075..67489b2ebd9f 100644 > --- a/sound/soc/codecs/Kconfig > +++ b/sound/soc/codecs/Kconfig > @@ -107,6 +107,7 @@ config SND_SOC_ALL_CODECS > imply SND_SOC_HDAC_HDMI > imply SND_SOC_HDAC_HDA > imply SND_SOC_ICS43432 > + imply SND_SOC_IDT821034 > imply SND_SOC_INNO_RK3036 > imply SND_SOC_ISABELLE > imply SND_SOC_JZ4740_CODEC > @@ -972,6 +973,17 @@ config SND_SOC_HDA > config SND_SOC_ICS43432 > tristate "ICS43423 and compatible i2s microphones" > > +config SND_SOC_IDT821034 > + tristate "Renesas IDT821034 quad PCM codec" > + depends on SPI > + select REGMAP_SPI Is selecting regmap still necessary ? > + help > + Enable support for the Renesas IDT821034 quad PCM with > + programmable gain codec. > + > + To compile this driver as a module, choose M here: the module > + will be called snd-soc-idt821034. > + > config SND_SOC_INNO_RK3036 > tristate "Inno codec driver for RK3036 SoC" > select REGMAP_MMIO > diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile > index 71d3ce5867e4..bcf95de654fd 100644 > --- a/sound/soc/codecs/Makefile > +++ b/sound/soc/codecs/Makefile > @@ -111,6 +111,7 @@ snd-soc-hdac-hdmi-objs := hdac_hdmi.o > snd-soc-hdac-hda-objs := hdac_hda.o > snd-soc-hda-codec-objs := hda.o hda-dai.o > snd-soc-ics43432-objs := ics43432.o > +snd-soc-idt821034-objs := idt821034.o > snd-soc-inno-rk3036-objs := inno_rk3036.o > snd-soc-isabelle-objs := isabelle.o > snd-soc-jz4740-codec-objs := jz4740.o > @@ -472,6 +473,7 @@ obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o > obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o > obj-$(CONFIG_SND_SOC_HDA) += snd-soc-hda-codec.o > obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o > +obj-$(CONFIG_SND_SOC_IDT821034) += snd-soc-idt821034.o > obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o > obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o > obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o > diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c > new file mode 100644 > index 000000000000..5eb93fec6042 > --- /dev/null > +++ b/sound/soc/codecs/idt821034.c > @@ -0,0 +1,1200 @@ > +// 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, > + } > + }; > + int ret; > + > + idt821034->spi_tx_buf = val; > + > + dev_vdbg(&idt821034->spi->dev, "spi xfer wr 0x%x\n", val); > + > + ret = spi_sync_transfer(idt821034->spi, xfer, 2); > + if (ret) > + return ret; > + > + return 0; Looks like you could just do: return spi_sync_transfer(idt821034->spi, xfer, 2); > +} > + > +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 the programming sequence */ s/the/for/ ? > +#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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); > + if (ret) > + return ret; > + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].rx_slot); > + if (ret) > + return ret; > + } > + if (power & IDT821034_CONF_PWRUP_TX) { > + ret = idt821034_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); > + if (ret) > + return ret; > + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].tx_slot); > + if (ret) > + return ret; > + } > + if (!(power & (IDT821034_CONF_PWRUP_TX | IDT821034_CONF_PWRUP_RX))) { > + ret = idt821034_8bit_write(idt821034, conf); > + if (ret) > + return ret; > + ret = idt821034_8bit_write(idt821034, 0x00); > + if (ret) > + return ret; > + } Can we refactor the three actions with an helper, that could also be reused for idt821034_set_codec_conf() and idt821034_set_channel_ts() and idt821034_set_slic_conf() and idt821034_write_slic_raw() and idt821034_set_gain_channel, something like for instance: static int idt821034_set_conf(struct idt821034 *idt821034, u8 conf, u8 val) { ret = idt821034_8bit_write(idt821034, conf); if (ret) return ret; return idt821034_8bit_write(idt821034, val); } > + > + 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_8bit_write(idt821034, conf); > + if (ret) > + return ret; > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); > + if (ret) > + return ret; > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); > + if (ret) > + return ret; > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf); > + if (ret) > + return ret; > + > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf); > + if (ret) > + return ret; > + > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | 0x00); > + if (ret) > + return ret; > + > + ret = idt821034_8bit_write(idt821034, gain_val & 0x007F); > + if (ret) > + return ret; > + > + ret = idt821034_8bit_write(idt821034, conf | 0x01); > + if (ret) > + return ret; > + > + ret = idt821034_8bit_write(idt821034, (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 < 0) > + return -EINVAL; > + 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->is_muted) { > + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, val); > + if (ret) > + goto end; > + } > + > + amp->gain = val; > + ret = 0; > +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; > + } > + > + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, > + is_mute ? 0 : amp->gain); > + if (ret) > + goto end; > + > + amp->is_muted = is_mute; > + > + ret = 0; > +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, > +}; > + > +#if IS_ENABLED(CONFIG_GPIOLIB) #ifdef CONFIG_GPIOLIB ? Is that #if section needed at all ? Isn't it possible to have it all the time and check IS_ENABLED(CONFIG_GPIOLIB) in the probe before calling the init ? Something like : if (IS_ENABLED(CONFIG_GPIOLIB)) return idt821034_gpio_init(idt821034); return 0; > +#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; Is the owner really needed ? > + 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); > +} > +#else /* IS_ENABLED(CONFIG_GPIOLIB) */ > +static int idt821034_gpio_init(struct idt821034 *idt821034) > +{ > + return 0; > +} > +#endif > + > +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; > + > + ret = idt821034_gpio_init(idt821034); > + if (ret) > + return ret; > + > + 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");
Hi Christophe, On Mon, 23 Jan 2023 07:53:49 +0000 Christophe Leroy <christophe.leroy@csgroup.eu> wrote: > Le 20/01/2023 à 10:50, Herve Codina a écrit : > > The Renesas IDT821034 codec is four channel PCM codec with on-chip > > filters and programmable gain setting. > > It also provides SLIC (Subscriber Line Interface Circuit) signals as > > GPIOs. > > > > Signed-off-by: Herve Codina <herve.codina@bootlin.com> > > --- > > sound/soc/codecs/Kconfig | 12 + > > sound/soc/codecs/Makefile | 2 + > > sound/soc/codecs/idt821034.c | 1200 ++++++++++++++++++++++++++++++++++ > > 3 files changed, 1214 insertions(+) > > create mode 100644 sound/soc/codecs/idt821034.c > > > > diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig > > index 0f9d71490075..67489b2ebd9f 100644 > > --- a/sound/soc/codecs/Kconfig > > +++ b/sound/soc/codecs/Kconfig > > @@ -107,6 +107,7 @@ config SND_SOC_ALL_CODECS > > imply SND_SOC_HDAC_HDMI > > imply SND_SOC_HDAC_HDA > > imply SND_SOC_ICS43432 > > + imply SND_SOC_IDT821034 > > imply SND_SOC_INNO_RK3036 > > imply SND_SOC_ISABELLE > > imply SND_SOC_JZ4740_CODEC > > @@ -972,6 +973,17 @@ config SND_SOC_HDA > > config SND_SOC_ICS43432 > > tristate "ICS43423 and compatible i2s microphones" > > > > +config SND_SOC_IDT821034 > > + tristate "Renesas IDT821034 quad PCM codec" > > + depends on SPI > > + select REGMAP_SPI > > Is selecting regmap still necessary ? Indeed, REGMAP_SPI is not needed anymore. Will be fixed in v3. > > > + help > > + Enable support for the Renesas IDT821034 quad PCM with > > + programmable gain codec. > > + > > + To compile this driver as a module, choose M here: the module > > + will be called snd-soc-idt821034. > > + > > config SND_SOC_INNO_RK3036 > > tristate "Inno codec driver for RK3036 SoC" > > select REGMAP_MMIO > > diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile > > index 71d3ce5867e4..bcf95de654fd 100644 > > --- a/sound/soc/codecs/Makefile > > +++ b/sound/soc/codecs/Makefile > > @@ -111,6 +111,7 @@ snd-soc-hdac-hdmi-objs := hdac_hdmi.o > > snd-soc-hdac-hda-objs := hdac_hda.o > > snd-soc-hda-codec-objs := hda.o hda-dai.o > > snd-soc-ics43432-objs := ics43432.o > > +snd-soc-idt821034-objs := idt821034.o > > snd-soc-inno-rk3036-objs := inno_rk3036.o > > snd-soc-isabelle-objs := isabelle.o > > snd-soc-jz4740-codec-objs := jz4740.o > > @@ -472,6 +473,7 @@ obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o > > obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o > > obj-$(CONFIG_SND_SOC_HDA) += snd-soc-hda-codec.o > > obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o > > +obj-$(CONFIG_SND_SOC_IDT821034) += snd-soc-idt821034.o > > obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o > > obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o > > obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o > > diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c > > new file mode 100644 > > index 000000000000..5eb93fec6042 > > --- /dev/null > > +++ b/sound/soc/codecs/idt821034.c > > @@ -0,0 +1,1200 @@ > > +// 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, > > + } > > + }; > > + int ret; > > + > > + idt821034->spi_tx_buf = val; > > + > > + dev_vdbg(&idt821034->spi->dev, "spi xfer wr 0x%x\n", val); > > + > > + ret = spi_sync_transfer(idt821034->spi, xfer, 2); > > + if (ret) > > + return ret; > > + > > + return 0; > > Looks like you could just do: > > return spi_sync_transfer(idt821034->spi, xfer, 2); Yes, I will change in v3. > > > +} > > + > > +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 the programming sequence */ > > s/the/for/ ? Sure, I will change in v3. > > > +#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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); > > + if (ret) > > + return ret; > > + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].rx_slot); > > + if (ret) > > + return ret; > > + } > > + if (power & IDT821034_CONF_PWRUP_TX) { > > + ret = idt821034_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); > > + if (ret) > > + return ret; > > + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].tx_slot); > > + if (ret) > > + return ret; > > + } > > + if (!(power & (IDT821034_CONF_PWRUP_TX | IDT821034_CONF_PWRUP_RX))) { > > + ret = idt821034_8bit_write(idt821034, conf); > > + if (ret) > > + return ret; > > + ret = idt821034_8bit_write(idt821034, 0x00); > > + if (ret) > > + return ret; > > + } > > Can we refactor the three actions with an helper, that could also be > reused for idt821034_set_codec_conf() and idt821034_set_channel_ts() and > idt821034_set_slic_conf() and idt821034_write_slic_raw() and > idt821034_set_gain_channel, something like for instance: > > static int idt821034_set_conf(struct idt821034 *idt821034, u8 conf, u8 val) > { > ret = idt821034_8bit_write(idt821034, conf); > if (ret) > return ret; > return idt821034_8bit_write(idt821034, val); > } It can be changed. The function name will not be idt821034_set_conf() as it is not the same kind of funtion as the idt821031_set_*() already available in the code. What do you think about: static int idt821034_2x8bit_write(struct idt821034 *idt821034, u8 val1, u8 val2) or static int idt821034_conf_write(struct idt821034 *idt821034, u8 conf, u8 val) I prefer the first one but it is only a personal preference. On your side, what do you prefer ? > > > + > > + 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_8bit_write(idt821034, conf); > > + if (ret) > > + return ret; > > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); > > + if (ret) > > + return ret; > > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); > > + if (ret) > > + return ret; > > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf); > > + if (ret) > > + return ret; > > + > > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf); > > + if (ret) > > + return ret; > > + > > + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | 0x00); > > + if (ret) > > + return ret; > > + > > + ret = idt821034_8bit_write(idt821034, gain_val & 0x007F); > > + if (ret) > > + return ret; > > + > > + ret = idt821034_8bit_write(idt821034, conf | 0x01); > > + if (ret) > > + return ret; > > + > > + ret = idt821034_8bit_write(idt821034, (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 < 0) > > + return -EINVAL; > > + 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->is_muted) { > > + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, val); > > + if (ret) > > + goto end; > > + } > > + > > + amp->gain = val; > > + ret = 0; > > +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; > > + } > > + > > + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, > > + is_mute ? 0 : amp->gain); > > + if (ret) > > + goto end; > > + > > + amp->is_muted = is_mute; > > + > > + ret = 0; > > +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, > > +}; > > + > > +#if IS_ENABLED(CONFIG_GPIOLIB) > > #ifdef CONFIG_GPIOLIB ? > > Is that #if section needed at all ? Isn't it possible to have it all the > time and check IS_ENABLED(CONFIG_GPIOLIB) in the probe before calling > the init ? Something like : > > if (IS_ENABLED(CONFIG_GPIOLIB)) > return idt821034_gpio_init(idt821034); > return 0; The following functions: - idt821034_chip_gpio_set(), - idt821034_chip_gpio_get(), - idt821034_chip_get_direction(), - idt821034_chip_direction_input(), - idt821034_chip_direction_output() use gpiochip_get_data() to retrieve private data. gpiochip_get_data() is defined only when CONFIG_GPIOLIB is set. That's why the #if section is used. > > > +#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; > > Is the owner really needed ? I think it is: https://elixir.bootlin.com/linux/latest/source/include/linux/gpio/driver.h#L319 and look at drivers/gpio/, a lot of drivers (all ?) set the owner value. > > > + 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); > > +} > > +#else /* IS_ENABLED(CONFIG_GPIOLIB) */ > > +static int idt821034_gpio_init(struct idt821034 *idt821034) > > +{ > > + return 0; > > +} > > +#endif > > + > > +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; > > + > > + ret = idt821034_gpio_init(idt821034); > > + if (ret) > > + return ret; > > + > > + 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"); Thanks for the review, Hervé
Le 23/01/2023 à 09:56, Herve Codina a écrit : >>> + >>> +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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); >>> + if (ret) >>> + return ret; >>> + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].rx_slot); >>> + if (ret) >>> + return ret; >>> + } >>> + if (power & IDT821034_CONF_PWRUP_TX) { >>> + ret = idt821034_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); >>> + if (ret) >>> + return ret; >>> + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].tx_slot); >>> + if (ret) >>> + return ret; >>> + } >>> + if (!(power & (IDT821034_CONF_PWRUP_TX | IDT821034_CONF_PWRUP_RX))) { >>> + ret = idt821034_8bit_write(idt821034, conf); >>> + if (ret) >>> + return ret; >>> + ret = idt821034_8bit_write(idt821034, 0x00); >>> + if (ret) >>> + return ret; >>> + } >> >> Can we refactor the three actions with an helper, that could also be >> reused for idt821034_set_codec_conf() and idt821034_set_channel_ts() and >> idt821034_set_slic_conf() and idt821034_write_slic_raw() and >> idt821034_set_gain_channel, something like for instance: >> >> static int idt821034_set_conf(struct idt821034 *idt821034, u8 conf, u8 val) >> { >> ret = idt821034_8bit_write(idt821034, conf); >> if (ret) >> return ret; >> return idt821034_8bit_write(idt821034, val); >> } > > It can be changed. > The function name will not be idt821034_set_conf() as it is not the same > kind of funtion as the idt821031_set_*() already available in the code. > What do you think about: > static int idt821034_2x8bit_write(struct idt821034 *idt821034, u8 val1, u8 val2) > or > static int idt821034_conf_write(struct idt821034 *idt821034, u8 conf, u8 val) > > I prefer the first one but it is only a personal preference. > On your side, what do you prefer ? idt821034_2x8bit_write() looks good to me. Christophe
Hi Hervé, Le 23/01/2023 à 09:56, Herve Codina a écrit : > > gpiochip_get_data() is defined only when CONFIG_GPIOLIB is set. > That's why the #if section is used. gpiochip_get_data() is still declared when CONFIG_GPIOLIB is not set, so it is not a problem, the call to it will be eliminated at buildtime. By the way, at the time being I get the following warnings: CC sound/soc/codecs/idt821034.o sound/soc/codecs/idt821034.c:310:12: warning: 'idt821034_read_slic_raw' defined but not used [-Wunused-function] 310 | static int idt821034_read_slic_raw(struct idt821034 *idt821034, u8 ch, u8 *slic_raw) | ^~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/idt821034.c:305:11: warning: 'idt821034_get_written_slic_raw' defined but not used [-Wunused-function] 305 | static u8 idt821034_get_written_slic_raw(struct idt821034 *idt821034, u8 ch) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/idt821034.c:276:12: warning: 'idt821034_write_slic_raw' defined but not used [-Wunused-function] 276 | static int idt821034_write_slic_raw(struct idt821034 *idt821034, u8 ch, u8 slic_raw) | ^~~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/idt821034.c:271:11: warning: 'idt821034_get_slic_conf' defined but not used [-Wunused-function] 271 | static u8 idt821034_get_slic_conf(struct idt821034 *idt821034, u8 ch) | ^~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/idt821034.c:250:12: warning: 'idt821034_set_slic_conf' defined but not used [-Wunused-function] 250 | static int idt821034_set_slic_conf(struct idt821034 *idt821034, u8 ch, u8 slic_dir) | ^~~~~~~~~~~~~~~~~~~~~~~ With the following changes I have no warning and an objdump -x on idt821034.o shows no reference to gpiochip_get_data() diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c index 5eb93fec6042..8b75388e22ce 100644 --- a/sound/soc/codecs/idt821034.c +++ b/sound/soc/codecs/idt821034.c @@ -968,7 +968,6 @@ static const struct snd_soc_component_driver idt821034_component_driver = { .endianness = 1, }; -#if IS_ENABLED(CONFIG_GPIOLIB) #define IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(_offset) (((_offset) / 5) % 4) #define IDT821034_GPIO_OFFSET_TO_SLIC_MASK(_offset) BIT((_offset) % 5) @@ -1133,12 +1132,6 @@ static int idt821034_gpio_init(struct idt821034 *idt821034) return devm_gpiochip_add_data(&idt821034->spi->dev, &idt821034->gpio_chip, idt821034); } -#else /* IS_ENABLED(CONFIG_GPIOLIB) */ -static int idt821034_gpio_init(struct idt821034 *idt821034) -{ - return 0; -} -#endif static int idt821034_spi_probe(struct spi_device *spi) { @@ -1165,6 +1158,9 @@ static int idt821034_spi_probe(struct spi_device *spi) if (ret) return ret; + if (!IS_ENABLED(CONFIG_GPIOLIB)) + return 0; + ret = idt821034_gpio_init(idt821034); if (ret) return ret; Christophe
Hi Christophe, On Mon, 23 Jan 2023 11:13:23 +0000 Christophe Leroy <christophe.leroy@csgroup.eu> wrote: > Hi Hervé, > > Le 23/01/2023 à 09:56, Herve Codina a écrit : > > > > gpiochip_get_data() is defined only when CONFIG_GPIOLIB is set. > > That's why the #if section is used. > > gpiochip_get_data() is still declared when CONFIG_GPIOLIB is not set, so > it is not a problem, the call to it will be eliminated at buildtime. > > By the way, at the time being I get the following warnings: > > CC sound/soc/codecs/idt821034.o > sound/soc/codecs/idt821034.c:310:12: warning: 'idt821034_read_slic_raw' > defined but not used [-Wunused-function] > 310 | static int idt821034_read_slic_raw(struct idt821034 *idt821034, > u8 ch, u8 *slic_raw) > | ^~~~~~~~~~~~~~~~~~~~~~~ > sound/soc/codecs/idt821034.c:305:11: warning: > 'idt821034_get_written_slic_raw' defined but not used [-Wunused-function] > 305 | static u8 idt821034_get_written_slic_raw(struct idt821034 > *idt821034, u8 ch) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > sound/soc/codecs/idt821034.c:276:12: warning: 'idt821034_write_slic_raw' > defined but not used [-Wunused-function] > 276 | static int idt821034_write_slic_raw(struct idt821034 > *idt821034, u8 ch, u8 slic_raw) > | ^~~~~~~~~~~~~~~~~~~~~~~~ > sound/soc/codecs/idt821034.c:271:11: warning: 'idt821034_get_slic_conf' > defined but not used [-Wunused-function] > 271 | static u8 idt821034_get_slic_conf(struct idt821034 *idt821034, > u8 ch) > | ^~~~~~~~~~~~~~~~~~~~~~~ > sound/soc/codecs/idt821034.c:250:12: warning: 'idt821034_set_slic_conf' > defined but not used [-Wunused-function] > 250 | static int idt821034_set_slic_conf(struct idt821034 *idt821034, > u8 ch, u8 slic_dir) > | ^~~~~~~~~~~~~~~~~~~~~~~ > > > With the following changes I have no warning and an objdump -x on > idt821034.o shows no reference to gpiochip_get_data() > > diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c > index 5eb93fec6042..8b75388e22ce 100644 > --- a/sound/soc/codecs/idt821034.c > +++ b/sound/soc/codecs/idt821034.c > @@ -968,7 +968,6 @@ static const struct snd_soc_component_driver > idt821034_component_driver = { > .endianness = 1, > }; > > -#if IS_ENABLED(CONFIG_GPIOLIB) > #define IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(_offset) (((_offset) / > 5) % 4) > #define IDT821034_GPIO_OFFSET_TO_SLIC_MASK(_offset) BIT((_offset) % 5) > > @@ -1133,12 +1132,6 @@ static int idt821034_gpio_init(struct idt821034 > *idt821034) > return devm_gpiochip_add_data(&idt821034->spi->dev, > &idt821034->gpio_chip, > idt821034); > } > -#else /* IS_ENABLED(CONFIG_GPIOLIB) */ > -static int idt821034_gpio_init(struct idt821034 *idt821034) > -{ > - return 0; > -} > -#endif > > static int idt821034_spi_probe(struct spi_device *spi) > { > @@ -1165,6 +1158,9 @@ static int idt821034_spi_probe(struct spi_device *spi) > if (ret) > return ret; > > + if (!IS_ENABLED(CONFIG_GPIOLIB)) > + return 0; > + > ret = idt821034_gpio_init(idt821034); > if (ret) > return ret; > > > Christophe Right, I did the test too and indeed, I can remove the #if section. I will use (I think is clearer) at idt821034_spi_probe(): if (!IS_ENABLED(CONFIG_GPIOLIB)) { ret = idt821034_gpio_init(idt821034); if (ret) return ret; } Is that ok for you ? Thanks, Hervé
Le 23/01/2023 à 13:17, Herve Codina a écrit : > Hi Christophe, > > On Mon, 23 Jan 2023 11:13:23 +0000 > Christophe Leroy <christophe.leroy@csgroup.eu> wrote: > >> Hi Hervé, >> >> Le 23/01/2023 à 09:56, Herve Codina a écrit : >>> >>> gpiochip_get_data() is defined only when CONFIG_GPIOLIB is set. >>> That's why the #if section is used. >> >> gpiochip_get_data() is still declared when CONFIG_GPIOLIB is not set, so >> it is not a problem, the call to it will be eliminated at buildtime. >> >> By the way, at the time being I get the following warnings: >> >> CC sound/soc/codecs/idt821034.o >> sound/soc/codecs/idt821034.c:310:12: warning: 'idt821034_read_slic_raw' >> defined but not used [-Wunused-function] >> 310 | static int idt821034_read_slic_raw(struct idt821034 *idt821034, >> u8 ch, u8 *slic_raw) >> | ^~~~~~~~~~~~~~~~~~~~~~~ >> sound/soc/codecs/idt821034.c:305:11: warning: >> 'idt821034_get_written_slic_raw' defined but not used [-Wunused-function] >> 305 | static u8 idt821034_get_written_slic_raw(struct idt821034 >> *idt821034, u8 ch) >> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> sound/soc/codecs/idt821034.c:276:12: warning: 'idt821034_write_slic_raw' >> defined but not used [-Wunused-function] >> 276 | static int idt821034_write_slic_raw(struct idt821034 >> *idt821034, u8 ch, u8 slic_raw) >> | ^~~~~~~~~~~~~~~~~~~~~~~~ >> sound/soc/codecs/idt821034.c:271:11: warning: 'idt821034_get_slic_conf' >> defined but not used [-Wunused-function] >> 271 | static u8 idt821034_get_slic_conf(struct idt821034 *idt821034, >> u8 ch) >> | ^~~~~~~~~~~~~~~~~~~~~~~ >> sound/soc/codecs/idt821034.c:250:12: warning: 'idt821034_set_slic_conf' >> defined but not used [-Wunused-function] >> 250 | static int idt821034_set_slic_conf(struct idt821034 *idt821034, >> u8 ch, u8 slic_dir) >> | ^~~~~~~~~~~~~~~~~~~~~~~ >> >> >> With the following changes I have no warning and an objdump -x on >> idt821034.o shows no reference to gpiochip_get_data() >> >> diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c >> index 5eb93fec6042..8b75388e22ce 100644 >> --- a/sound/soc/codecs/idt821034.c >> +++ b/sound/soc/codecs/idt821034.c >> @@ -968,7 +968,6 @@ static const struct snd_soc_component_driver >> idt821034_component_driver = { >> .endianness = 1, >> }; >> >> -#if IS_ENABLED(CONFIG_GPIOLIB) >> #define IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(_offset) (((_offset) / >> 5) % 4) >> #define IDT821034_GPIO_OFFSET_TO_SLIC_MASK(_offset) BIT((_offset) % 5) >> >> @@ -1133,12 +1132,6 @@ static int idt821034_gpio_init(struct idt821034 >> *idt821034) >> return devm_gpiochip_add_data(&idt821034->spi->dev, >> &idt821034->gpio_chip, >> idt821034); >> } >> -#else /* IS_ENABLED(CONFIG_GPIOLIB) */ >> -static int idt821034_gpio_init(struct idt821034 *idt821034) >> -{ >> - return 0; >> -} >> -#endif >> >> static int idt821034_spi_probe(struct spi_device *spi) >> { >> @@ -1165,6 +1158,9 @@ static int idt821034_spi_probe(struct spi_device *spi) >> if (ret) >> return ret; >> >> + if (!IS_ENABLED(CONFIG_GPIOLIB)) >> + return 0; >> + >> ret = idt821034_gpio_init(idt821034); >> if (ret) >> return ret; >> >> >> Christophe > > Right, I did the test too and indeed, I can remove the #if section. > > I will use (I think is clearer) at idt821034_spi_probe(): > if (!IS_ENABLED(CONFIG_GPIOLIB)) { > ret = idt821034_gpio_init(idt821034); > if (ret) > return ret; > } > I guess you mean : if (IS_ENABLED(CONFIG_GPIOLIB)) > Is that ok for you ? What about: if (IS_ENABLED(CONFIG_GPIOLIB)) return idt821034_gpio_init(idt821034); else return 0; Christophe
On Mon, 23 Jan 2023 12:30:32 +0000 Christophe Leroy <christophe.leroy@csgroup.eu> wrote: > Le 23/01/2023 à 13:17, Herve Codina a écrit : > > Hi Christophe, > > > > On Mon, 23 Jan 2023 11:13:23 +0000 > > Christophe Leroy <christophe.leroy@csgroup.eu> wrote: > > > >> Hi Hervé, > >> > >> Le 23/01/2023 à 09:56, Herve Codina a écrit : > >>> > >>> gpiochip_get_data() is defined only when CONFIG_GPIOLIB is set. > >>> That's why the #if section is used. > >> > >> gpiochip_get_data() is still declared when CONFIG_GPIOLIB is not set, so > >> it is not a problem, the call to it will be eliminated at buildtime. > >> > >> By the way, at the time being I get the following warnings: > >> > >> CC sound/soc/codecs/idt821034.o > >> sound/soc/codecs/idt821034.c:310:12: warning: 'idt821034_read_slic_raw' > >> defined but not used [-Wunused-function] > >> 310 | static int idt821034_read_slic_raw(struct idt821034 *idt821034, > >> u8 ch, u8 *slic_raw) > >> | ^~~~~~~~~~~~~~~~~~~~~~~ > >> sound/soc/codecs/idt821034.c:305:11: warning: > >> 'idt821034_get_written_slic_raw' defined but not used [-Wunused-function] > >> 305 | static u8 idt821034_get_written_slic_raw(struct idt821034 > >> *idt821034, u8 ch) > >> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > >> sound/soc/codecs/idt821034.c:276:12: warning: 'idt821034_write_slic_raw' > >> defined but not used [-Wunused-function] > >> 276 | static int idt821034_write_slic_raw(struct idt821034 > >> *idt821034, u8 ch, u8 slic_raw) > >> | ^~~~~~~~~~~~~~~~~~~~~~~~ > >> sound/soc/codecs/idt821034.c:271:11: warning: 'idt821034_get_slic_conf' > >> defined but not used [-Wunused-function] > >> 271 | static u8 idt821034_get_slic_conf(struct idt821034 *idt821034, > >> u8 ch) > >> | ^~~~~~~~~~~~~~~~~~~~~~~ > >> sound/soc/codecs/idt821034.c:250:12: warning: 'idt821034_set_slic_conf' > >> defined but not used [-Wunused-function] > >> 250 | static int idt821034_set_slic_conf(struct idt821034 *idt821034, > >> u8 ch, u8 slic_dir) > >> | ^~~~~~~~~~~~~~~~~~~~~~~ > >> > >> > >> With the following changes I have no warning and an objdump -x on > >> idt821034.o shows no reference to gpiochip_get_data() > >> > >> diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c > >> index 5eb93fec6042..8b75388e22ce 100644 > >> --- a/sound/soc/codecs/idt821034.c > >> +++ b/sound/soc/codecs/idt821034.c > >> @@ -968,7 +968,6 @@ static const struct snd_soc_component_driver > >> idt821034_component_driver = { > >> .endianness = 1, > >> }; > >> > >> -#if IS_ENABLED(CONFIG_GPIOLIB) > >> #define IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(_offset) (((_offset) / > >> 5) % 4) > >> #define IDT821034_GPIO_OFFSET_TO_SLIC_MASK(_offset) BIT((_offset) % 5) > >> > >> @@ -1133,12 +1132,6 @@ static int idt821034_gpio_init(struct idt821034 > >> *idt821034) > >> return devm_gpiochip_add_data(&idt821034->spi->dev, > >> &idt821034->gpio_chip, > >> idt821034); > >> } > >> -#else /* IS_ENABLED(CONFIG_GPIOLIB) */ > >> -static int idt821034_gpio_init(struct idt821034 *idt821034) > >> -{ > >> - return 0; > >> -} > >> -#endif > >> > >> static int idt821034_spi_probe(struct spi_device *spi) > >> { > >> @@ -1165,6 +1158,9 @@ static int idt821034_spi_probe(struct spi_device *spi) > >> if (ret) > >> return ret; > >> > >> + if (!IS_ENABLED(CONFIG_GPIOLIB)) > >> + return 0; > >> + > >> ret = idt821034_gpio_init(idt821034); > >> if (ret) > >> return ret; > >> > >> > >> Christophe > > > > Right, I did the test too and indeed, I can remove the #if section. > > > > I will use (I think is clearer) at idt821034_spi_probe(): > > if (!IS_ENABLED(CONFIG_GPIOLIB)) { > > ret = idt821034_gpio_init(idt821034); > > if (ret) > > return ret; > > } > > > > > I guess you mean : > > if (IS_ENABLED(CONFIG_GPIOLIB)) Yes of course. Sorry for the typo. > > > > Is that ok for you ? > > > > What about: > > if (IS_ENABLED(CONFIG_GPIOLIB)) > return idt821034_gpio_init(idt821034); > else > return 0; > > Christophe Well, maybe this version ? static int idt821034_spi_probe(struct spi_device *spi) { ... if (IS_ENABLED(CONFIG_GPIOLIB)) return idt821034_gpio_init(idt821034); return 0; } Thanks, Hervé
> > Well, maybe this version ? > > static int idt821034_spi_probe(struct spi_device *spi) > { > ... > > if (IS_ENABLED(CONFIG_GPIOLIB)) > return idt821034_gpio_init(idt821034); > > return 0; > } > Yes that's fine for me. Christophe
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 0f9d71490075..67489b2ebd9f 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -107,6 +107,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_HDAC_HDMI imply SND_SOC_HDAC_HDA imply SND_SOC_ICS43432 + imply SND_SOC_IDT821034 imply SND_SOC_INNO_RK3036 imply SND_SOC_ISABELLE imply SND_SOC_JZ4740_CODEC @@ -972,6 +973,17 @@ config SND_SOC_HDA config SND_SOC_ICS43432 tristate "ICS43423 and compatible i2s microphones" +config SND_SOC_IDT821034 + tristate "Renesas IDT821034 quad PCM codec" + depends on SPI + select REGMAP_SPI + help + Enable support for the Renesas IDT821034 quad PCM with + programmable gain codec. + + To compile this driver as a module, choose M here: the module + will be called snd-soc-idt821034. + config SND_SOC_INNO_RK3036 tristate "Inno codec driver for RK3036 SoC" select REGMAP_MMIO diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 71d3ce5867e4..bcf95de654fd 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -111,6 +111,7 @@ snd-soc-hdac-hdmi-objs := hdac_hdmi.o snd-soc-hdac-hda-objs := hdac_hda.o snd-soc-hda-codec-objs := hda.o hda-dai.o snd-soc-ics43432-objs := ics43432.o +snd-soc-idt821034-objs := idt821034.o snd-soc-inno-rk3036-objs := inno_rk3036.o snd-soc-isabelle-objs := isabelle.o snd-soc-jz4740-codec-objs := jz4740.o @@ -472,6 +473,7 @@ obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o obj-$(CONFIG_SND_SOC_HDA) += snd-soc-hda-codec.o obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o +obj-$(CONFIG_SND_SOC_IDT821034) += snd-soc-idt821034.o obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c new file mode 100644 index 000000000000..5eb93fec6042 --- /dev/null +++ b/sound/soc/codecs/idt821034.c @@ -0,0 +1,1200 @@ +// 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, + } + }; + int ret; + + idt821034->spi_tx_buf = val; + + dev_vdbg(&idt821034->spi->dev, "spi xfer wr 0x%x\n", val); + + ret = spi_sync_transfer(idt821034->spi, xfer, 2); + if (ret) + return ret; + + return 0; +} + +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 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); + if (ret) + return ret; + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].rx_slot); + if (ret) + return ret; + } + if (power & IDT821034_CONF_PWRUP_TX) { + ret = idt821034_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); + if (ret) + return ret; + ret = idt821034_8bit_write(idt821034, idt821034->cache.ch[ch].tx_slot); + if (ret) + return ret; + } + if (!(power & (IDT821034_CONF_PWRUP_TX | IDT821034_CONF_PWRUP_RX))) { + ret = idt821034_8bit_write(idt821034, conf); + if (ret) + return ret; + ret = idt821034_8bit_write(idt821034, 0x00); + 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_8bit_write(idt821034, conf); + if (ret) + return ret; + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_RX); + if (ret) + return ret; + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | IDT821034_CONF_PWRUP_TX); + if (ret) + return ret; + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf); + if (ret) + return ret; + + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf); + if (ret) + return ret; + + ret = idt821034_8bit_write(idt821034, 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_8bit_write(idt821034, conf | 0x00); + if (ret) + return ret; + + ret = idt821034_8bit_write(idt821034, gain_val & 0x007F); + if (ret) + return ret; + + ret = idt821034_8bit_write(idt821034, conf | 0x01); + if (ret) + return ret; + + ret = idt821034_8bit_write(idt821034, (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 < 0) + return -EINVAL; + 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->is_muted) { + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, val); + if (ret) + goto end; + } + + amp->gain = val; + ret = 0; +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; + } + + ret = idt821034_set_gain_channel(idt821034, ch, gain_type, + is_mute ? 0 : amp->gain); + if (ret) + goto end; + + amp->is_muted = is_mute; + + ret = 0; +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, +}; + +#if IS_ENABLED(CONFIG_GPIOLIB) +#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); +} +#else /* IS_ENABLED(CONFIG_GPIOLIB) */ +static int idt821034_gpio_init(struct idt821034 *idt821034) +{ + return 0; +} +#endif + +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; + + ret = idt821034_gpio_init(idt821034); + if (ret) + return ret; + + 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");
The Renesas IDT821034 codec is four channel PCM codec with on-chip filters and programmable gain setting. It also provides SLIC (Subscriber Line Interface Circuit) signals as GPIOs. Signed-off-by: Herve Codina <herve.codina@bootlin.com> --- sound/soc/codecs/Kconfig | 12 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/idt821034.c | 1200 ++++++++++++++++++++++++++++++++++ 3 files changed, 1214 insertions(+) create mode 100644 sound/soc/codecs/idt821034.c