@@ -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
@@ -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
new file mode 100644
@@ -0,0 +1,1234 @@
+// 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 {
+ struct spi_device *spi;
+ 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 regmap *regmap;
+ struct cache {
+ u8 codec_conf;
+ struct ch {
+ u8 power;
+ u8 tx_slot;
+ u8 rx_slot;
+ u8 slic_conf;
+ u8 slic_control;
+ } ch[IDT821034_NB_CHANNEL];
+ } cache;
+ int max_chan_playback;
+ int max_chan_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;
+}
+
+#define IDT821034_CONF_MASK (0x3 << 4)
+#define IDT821034_CONF_ALAW_MODE (1 << 5)
+#define IDT821034_CONF_MULAW_MODE (0 << 5)
+#define IDT821034_CONF_DELAY_MODE (1 << 4)
+#define IDT821034_CONF_NONDELAY_MODE (0 << 4)
+#define IDT821034_CONF_CHANNEL(_ch) ((_ch) << 2)
+#define IDT821034_CONF_PWRUP_RX (1 << 0)
+#define IDT821034_CONF_PWRUP_TX (1 << 1)
+#define IDT821034_CONF_PWRDOWN (0 << 0)
+
+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 = 0x80 | codec_conf | IDT821034_CONF_CHANNEL(0);
+
+ /* 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 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 = 0x80 | idt821034->cache.codec_conf | IDT821034_CONF_CHANNEL(ch);
+
+ 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 | IDT821034_CONF_PWRDOWN);
+ if (ret)
+ return ret;
+ ret = idt821034_8bit_write(idt821034, 0x00);
+ if (ret)
+ return ret;
+ }
+
+ idt821034->cache.ch[ch].power = power;
+
+ return 0;
+}
+
+/* In the codec documentation, 'transmit' is from analog input to PCM and
+ * 'receive' is from PCM to analog output.
+ * We keep the same terminology in this source code.
+ */
+#define IDT821034_CH_RX (0x1 << 0) /* from PCM to analog output */
+#define IDT821034_CH_TX (0x1 << 1) /* from analog input to PCM */
+#define IDT821034_CH_RXTX (IDT821034_CH_RX | IDT821034_CH_TX)
+
+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 = 0x80 | idt821034->cache.codec_conf | IDT821034_CONF_CHANNEL(ch);
+
+ 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;
+}
+
+#define IDT821034_SLIC_CHANNEL(_ch) ((_ch) << 2)
+#define IDT821034_SLIC_IO1_IN (1 << 1)
+#define IDT821034_SLIC_IO0_IN (1 << 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 = 0xD0 | IDT821034_SLIC_CHANNEL(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 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:
+ * b4: O_4
+ * b3: O_3
+ * b2: O_2
+ * b1: I/O_1
+ * b0: I/O_0
+ */
+
+ conf = 0xD0 | IDT821034_SLIC_CHANNEL(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 int idt821034_read_slic_raw(struct idt821034 *idt821034, u8 ch, u8 *slic_raw)
+{
+ u8 val;
+ int ret;
+
+ /* On read, slic_raw:
+ * 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 channel_addr value)
+ * b1: I/O2_0, I/O_0 from channel 2 (no matter channel_addr value)
+ * b2: I/O3_0, I/O_0 from channel 3 (no matter channel_addr value)
+ */
+
+ val = 0xD0 | IDT821034_SLIC_CHANNEL(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;
+}
+
+#define IDT821034_GAIN_CHANNEL(_ch) ((_ch) << 2)
+#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 = 0xC0 | IDT821034_GAIN_CHANNEL(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;
+}
+
+#define IDT821034_REGMAP_ADDR_DIR_MASK (1 << 0)
+#define IDT821034_REGMAP_ADDR_DIR_IN (0 << 0)
+#define IDT821034_REGMAP_ADDR_DIR_OUT (1 << 0)
+#define IDT821034_REGMAP_ADDR_IS_DIR_OUT(_addr) (!!((_addr) & 1))
+
+#define IDT821034_REGMAP_ADDR_CH_MASK (3 << 1)
+#define IDT821034_REGMAP_ADDR_CH(_ch) (((_ch) & 3) << 1)
+#define IDT821034_REGMAP_ADDR_GET_CH(_addr) (((_addr) >> 1) & 3)
+
+#define IDT821034_REGMAP_ADDR_TYPE_MASK (0x07 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_GBLCONF (0x00 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_GAIN (0x01 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_POWER (0x02 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_TS (0x03 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_SLIC_CONF (0x04 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_SLIC_DIN (0x05 << 3)
+#define IDT821034_REGMAP_ADDR_TYPE_SLIC_DOUT (0x06 << 3)
+#define IDT821034_REGMAP_ADDR_GET_TYPE(_addr) ((_addr) & IDT821034_REGMAP_ADDR_TYPE_MASK)
+
+#define IDT821034_REGMAP_ADDR(_type, _ch, _dir) ((_type) | (_ch) | (_dir))
+
+#define IDT821034_REGMAP_MAX_REGISTER IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_MASK, \
+ 0, 0)
+
+/* Global configuration */
+#define IDT821034_REGMAP_GBLCONF IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_GBLCONF, \
+ 0, 0)
+#define IDT821034_REGMAP_GBLCONF_ALAW_MODE (1 << 0)
+#define IDT821034_REGMAP_GBLCONF_MULAW_MODE (0 << 0)
+#define IDT821034_REGMAP_GBLCONF_DELAY_MODE (1 << 1)
+#define IDT821034_REGMAP_GBLCONF_NONDELAY_MODE (0 << 1)
+
+/* Gain (14 bits gain value + mute flag)
+ * bit0 : 0 unmute, 1 mute (internaly set gain to 0x00)
+ * bit1..15: gain value
+ */
+#define IDT821034_REGMAP_CH_GAIN_OUT(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_GAIN, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ IDT821034_REGMAP_ADDR_DIR_OUT)
+#define IDT821034_REGMAP_CH0_GAIN_OUT IDT821034_REGMAP_CH_GAIN_OUT(0)
+#define IDT821034_REGMAP_CH1_GAIN_OUT IDT821034_REGMAP_CH_GAIN_OUT(1)
+#define IDT821034_REGMAP_CH2_GAIN_OUT IDT821034_REGMAP_CH_GAIN_OUT(2)
+#define IDT821034_REGMAP_CH3_GAIN_OUT IDT821034_REGMAP_CH_GAIN_OUT(3)
+#define IDT821034_REGMAP_CH_GAIN_IN(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_GAIN, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ IDT821034_REGMAP_ADDR_DIR_IN)
+#define IDT821034_REGMAP_CH0_GAIN_IN IDT821034_REGMAP_CH_GAIN_IN(0)
+#define IDT821034_REGMAP_CH1_GAIN_IN IDT821034_REGMAP_CH_GAIN_IN(1)
+#define IDT821034_REGMAP_CH2_GAIN_IN IDT821034_REGMAP_CH_GAIN_IN(2)
+#define IDT821034_REGMAP_CH3_GAIN_IN IDT821034_REGMAP_CH_GAIN_IN(3)
+
+/* Channel power */
+#define IDT821034_REGMAP_CH_POWER(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_POWER, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ 0)
+#define IDT821034_REGMAP_CH0_POWER IDT821034_REGMAP_CH_POWER(0)
+#define IDT821034_REGMAP_CH1_POWER IDT821034_REGMAP_CH_POWER(1)
+#define IDT821034_REGMAP_CH2_POWER IDT821034_REGMAP_CH_POWER(2)
+#define IDT821034_REGMAP_CH3_POWER IDT821034_REGMAP_CH_POWER(3)
+#define IDT821034_REGMAP_POWER_OUT (1 << 1)
+#define IDT821034_REGMAP_POWER_IN (1 << 0)
+
+/* Channel TimeSlot */
+#define IDT821034_REGMAP_CH_TS_OUT(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_TS, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ IDT821034_REGMAP_ADDR_DIR_OUT)
+#define IDT821034_REGMAP_CH_TS_IN(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_TS, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ IDT821034_REGMAP_ADDR_DIR_IN)
+#define IDT821034_REGMAP_CH0_TS_OUT IDT821034_REGMAP_CH_TS_OUT(0)
+#define IDT821034_REGMAP_CH1_TS_OUT IDT821034_REGMAP_CH_TS_OUT(1)
+#define IDT821034_REGMAP_CH2_TS_OUT IDT821034_REGMAP_CH_TS_OUT(2)
+#define IDT821034_REGMAP_CH3_TS_OUT IDT821034_REGMAP_CH_TS_OUT(3)
+#define IDT821034_REGMAP_CH0_TS_IN IDT821034_REGMAP_CH_TS_IN(0)
+#define IDT821034_REGMAP_CH1_TS_IN IDT821034_REGMAP_CH_TS_IN(1)
+#define IDT821034_REGMAP_CH2_TS_IN IDT821034_REGMAP_CH_TS_IN(2)
+#define IDT821034_REGMAP_CH3_TS_IN IDT821034_REGMAP_CH_TS_IN(3)
+
+/* Slic configuration */
+#define IDT821034_REGMAP_CH_SLIC_CONF(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_SLIC_CONF, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ 0)
+#define IDT821034_REGMAP_CH0_SLIC_CONF IDT821034_REGMAP_CH_SLIC_CONF(0)
+#define IDT821034_REGMAP_CH1_SLIC_CONF IDT821034_REGMAP_CH_SLIC_CONF(1)
+#define IDT821034_REGMAP_CH2_SLIC_CONF IDT821034_REGMAP_CH_SLIC_CONF(2)
+#define IDT821034_REGMAP_CH3_SLIC_CONF IDT821034_REGMAP_CH_SLIC_CONF(3)
+
+/* Slic data in */
+#define IDT821034_REGMAP_CH_SLIC_DIN(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_SLIC_DIN, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ 0)
+#define IDT821034_REGMAP_CH0_SLIC_DIN IDT821034_REGMAP_CH_SLIC_DIN(0)
+#define IDT821034_REGMAP_CH1_SLIC_DIN IDT821034_REGMAP_CH_SLIC_DIN(1)
+#define IDT821034_REGMAP_CH2_SLIC_DIN IDT821034_REGMAP_CH_SLIC_DIN(2)
+#define IDT821034_REGMAP_CH3_SLIC_DIN IDT821034_REGMAP_CH_SLIC_DIN(3)
+
+/* Slic data out */
+#define IDT821034_REGMAP_CH_SLIC_DOUT(_ch) IDT821034_REGMAP_ADDR( \
+ IDT821034_REGMAP_ADDR_TYPE_SLIC_DOUT, \
+ IDT821034_REGMAP_ADDR_CH(_ch), \
+ 0)
+#define IDT821034_REGMAP_CH0_SLIC_DOUT IDT821034_REGMAP_CH_SLIC_DOUT(0)
+#define IDT821034_REGMAP_CH1_SLIC_DOUT IDT821034_REGMAP_CH_SLIC_DOUT(1)
+#define IDT821034_REGMAP_CH2_SLIC_DOUT IDT821034_REGMAP_CH_SLIC_DOUT(2)
+#define IDT821034_REGMAP_CH3_SLIC_DOUT IDT821034_REGMAP_CH_SLIC_DOUT(3)
+
+static int idt821034_reg_write_gblconf(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int val)
+{
+ u8 conf;
+
+ conf = 0;
+ if (val & IDT821034_REGMAP_GBLCONF_ALAW_MODE)
+ conf |= IDT821034_CONF_ALAW_MODE;
+ if (val & IDT821034_REGMAP_GBLCONF_DELAY_MODE)
+ conf |= IDT821034_CONF_DELAY_MODE;
+
+ return idt821034_set_codec_conf(idt821034, conf);
+}
+
+static int idt821034_reg_write_gain(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int val)
+{
+ u16 gain_val;
+ u8 gain_type;
+ u8 ch;
+
+ ch = IDT821034_REGMAP_ADDR_GET_CH(reg);
+ gain_type = IDT821034_REGMAP_ADDR_IS_DIR_OUT(reg) ?
+ IDT821034_GAIN_RX : IDT821034_GAIN_TX;
+ gain_val = (val & 0x01) ? 0 : val >> 1;
+
+ return idt821034_set_gain_channel(idt821034, ch, gain_type, gain_val);
+}
+
+static int idt821034_reg_write_power(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int val)
+{
+ u8 power;
+ u8 ch;
+
+ ch = IDT821034_REGMAP_ADDR_GET_CH(reg);
+
+ power = 0;
+ if (val & IDT821034_REGMAP_POWER_OUT)
+ power |= IDT821034_CONF_PWRUP_RX; /* PCM to analog output */
+ if (val & IDT821034_REGMAP_POWER_IN)
+ power |= IDT821034_CONF_PWRUP_TX; /* analog input to PCM */
+
+ return idt821034_set_channel_power(idt821034, ch, power);
+}
+
+static int idt821034_reg_write_ts(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int val)
+{
+ u8 ts_val;
+ u8 ch_dir;
+ u8 ch;
+
+ ch = IDT821034_REGMAP_ADDR_GET_CH(reg);
+ ch_dir = IDT821034_REGMAP_ADDR_IS_DIR_OUT(reg) ?
+ IDT821034_CH_RX : IDT821034_CH_TX;
+ ts_val = val;
+
+ return idt821034_set_channel_ts(idt821034, ch, ch_dir, ts_val);
+}
+
+static int idt821034_reg_write_slic_conf(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int val)
+{
+ u8 slic_dir;
+ u8 ch;
+
+ /* Only IO0 and IO1 can be set as input */
+ if (val & ~0x03)
+ return -EPERM;
+
+ ch = IDT821034_REGMAP_ADDR_GET_CH(reg);
+
+ slic_dir = 0;
+ if (val & (1 << 0))
+ slic_dir |= IDT821034_SLIC_IO0_IN;
+ if (val & (1 << 1))
+ slic_dir |= IDT821034_SLIC_IO1_IN;
+
+ return idt821034_set_slic_conf(idt821034, ch, slic_dir);
+}
+
+static int idt821034_reg_write_slic_dout(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int val)
+{
+ u8 slic_val;
+ u8 ch;
+
+ ch = IDT821034_REGMAP_ADDR_GET_CH(reg);
+ slic_val = val & 0x1f;
+
+ return idt821034_write_slic_raw(idt821034, ch, slic_val);
+}
+
+static int idt821034_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+ struct idt821034 *idt821034 = context;
+
+ dev_dbg(&idt821034->spi->dev, "reg_write(0x%x, 0x%x)\n", reg, val);
+
+ switch (IDT821034_REGMAP_ADDR_GET_TYPE(reg)) {
+ case IDT821034_REGMAP_ADDR_TYPE_GBLCONF:
+ return idt821034_reg_write_gblconf(idt821034, reg, val);
+
+ case IDT821034_REGMAP_ADDR_TYPE_GAIN:
+ return idt821034_reg_write_gain(idt821034, reg, val);
+
+ case IDT821034_REGMAP_ADDR_TYPE_POWER:
+ return idt821034_reg_write_power(idt821034, reg, val);
+
+ case IDT821034_REGMAP_ADDR_TYPE_TS:
+ return idt821034_reg_write_ts(idt821034, reg, val);
+
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_CONF:
+ return idt821034_reg_write_slic_conf(idt821034, reg, val);
+
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_DOUT:
+ return idt821034_reg_write_slic_dout(idt821034, reg, val);
+
+ default:
+ break;
+ }
+
+ dev_err(&idt821034->spi->dev, "unknown write reg 0x%x\n", reg);
+ return -EIO;
+}
+
+static bool idt821034_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (IDT821034_REGMAP_ADDR_GET_TYPE(reg)) {
+ case IDT821034_REGMAP_ADDR_TYPE_GBLCONF:
+ case IDT821034_REGMAP_ADDR_TYPE_GAIN:
+ case IDT821034_REGMAP_ADDR_TYPE_POWER:
+ case IDT821034_REGMAP_ADDR_TYPE_TS:
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_CONF:
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_DOUT:
+ return true;
+ default:
+ break;
+ }
+ return false;
+}
+
+static int idt821034_reg_read_slic_din(struct idt821034 *idt821034,
+ unsigned int reg, unsigned int *val)
+{
+ u8 slic_val;
+ int ret;
+ u8 ch;
+
+ ch = IDT821034_REGMAP_ADDR_GET_CH(reg);
+
+ ret = idt821034_read_slic_raw(idt821034, ch, &slic_val);
+ if (ret)
+ return ret;
+
+ /* SLIC IOs are read in reverse order compared to write.
+ * Reverse read value here in order to have IO0 at lsb (ie same order
+ * as write)
+ */
+ *val = bitrev8(slic_val) & 0x1f;
+ return 0;
+}
+
+static int idt821034_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+ struct idt821034 *idt821034 = context;
+
+ dev_dbg(&idt821034->spi->dev, "reg_read(0x%x)\n", reg);
+
+ switch (IDT821034_REGMAP_ADDR_GET_TYPE(reg)) {
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_DIN:
+ return idt821034_reg_read_slic_din(idt821034, reg, val);
+ default:
+ break;
+ }
+
+ dev_err(&idt821034->spi->dev, "unknown read reg 0x%x\n", reg);
+ return -EIO;
+}
+
+static bool idt821034_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (IDT821034_REGMAP_ADDR_GET_TYPE(reg)) {
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_DIN:
+ return true;
+ default:
+ break;
+ }
+ return false;
+}
+
+static bool idt821034_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (IDT821034_REGMAP_ADDR_GET_TYPE(reg)) {
+ case IDT821034_REGMAP_ADDR_TYPE_SLIC_DIN:
+ return true;
+ default:
+ break;
+ }
+ return false;
+}
+
+static const struct regmap_config idt821034_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ //.max_register = IDT821034_REGMAP_MAX_REGISTER,
+ .reg_write = idt821034_reg_write,
+ .reg_read = idt821034_reg_read,
+ .writeable_reg = idt821034_writeable_reg,
+ .readable_reg = idt821034_readable_reg,
+ .volatile_reg = idt821034_volatile_reg,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+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, -6797, 1028);
+#define IDT821034_GAIN_OUT_MIN_RAW 1 /* -67.97 dB -> 10^(-67.97/20.0) * 2506 = 1*/
+#define IDT821034_GAIN_OUT_MAX_RAW 8191 /* 10.28 dB -> 10^(12.88/20.0) * 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_TLV("DAC0 Playback Volume", IDT821034_REGMAP_CH0_GAIN_OUT,
+ 1, IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW,
+ 0, idt821034_gain_out),
+ SOC_SINGLE_RANGE_TLV("DAC1 Playback Volume", IDT821034_REGMAP_CH1_GAIN_OUT,
+ 1, IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW,
+ 0, idt821034_gain_out),
+ SOC_SINGLE_RANGE_TLV("DAC2 Playback Volume", IDT821034_REGMAP_CH2_GAIN_OUT,
+ 1, IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW,
+ 0, idt821034_gain_out),
+ SOC_SINGLE_RANGE_TLV("DAC3 Playback Volume", IDT821034_REGMAP_CH3_GAIN_OUT,
+ 1, IDT821034_GAIN_OUT_MIN_RAW, IDT821034_GAIN_OUT_MAX_RAW,
+ 0, idt821034_gain_out),
+
+ /* DAC mute control */
+ SOC_SINGLE("DAC0 Playback Switch", IDT821034_REGMAP_CH0_GAIN_OUT, 0, 1, 1),
+ SOC_SINGLE("DAC1 Playback Switch", IDT821034_REGMAP_CH1_GAIN_OUT, 0, 1, 1),
+ SOC_SINGLE("DAC2 Playback Switch", IDT821034_REGMAP_CH2_GAIN_OUT, 0, 1, 1),
+ SOC_SINGLE("DAC3 Playback Switch", IDT821034_REGMAP_CH3_GAIN_OUT, 0, 1, 1),
+
+ /* ADC volume control */
+ SOC_SINGLE_RANGE_TLV("ADC0 Capture Volume", IDT821034_REGMAP_CH0_GAIN_IN,
+ 1, IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW,
+ 0, idt821034_gain_in),
+ SOC_SINGLE_RANGE_TLV("ADC1 Capture Volume", IDT821034_REGMAP_CH1_GAIN_IN,
+ 1, IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW,
+ 0, idt821034_gain_in),
+ SOC_SINGLE_RANGE_TLV("ADC2 Capture Volume", IDT821034_REGMAP_CH2_GAIN_IN,
+ 1, IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW,
+ 0, idt821034_gain_in),
+ SOC_SINGLE_RANGE_TLV("ADC3 Capture Volume", IDT821034_REGMAP_CH3_GAIN_IN,
+ 1, IDT821034_GAIN_IN_MIN_RAW, IDT821034_GAIN_IN_MAX_RAW,
+ 0, idt821034_gain_in),
+
+ /* ADC mute control */
+ SOC_SINGLE("ADC0 Capture Switch", IDT821034_REGMAP_CH0_GAIN_IN, 0, 1, 1),
+ SOC_SINGLE("ADC1 Capture Switch", IDT821034_REGMAP_CH1_GAIN_IN, 0, 1, 1),
+ SOC_SINGLE("ADC2 Capture Switch", IDT821034_REGMAP_CH2_GAIN_IN, 0, 1, 1),
+ SOC_SINGLE("ADC3 Capture Switch", IDT821034_REGMAP_CH3_GAIN_IN, 0, 1, 1),
+};
+
+static const struct snd_soc_dapm_widget idt821034_dapm_widgets[] = {
+ SND_SOC_DAPM_DAC("DAC0", "Playback", IDT821034_REGMAP_CH0_POWER, 1, 0),
+ SND_SOC_DAPM_DAC("DAC1", "Playback", IDT821034_REGMAP_CH1_POWER, 1, 0),
+ SND_SOC_DAPM_DAC("DAC2", "Playback", IDT821034_REGMAP_CH2_POWER, 1, 0),
+ SND_SOC_DAPM_DAC("DAC3", "Playback", IDT821034_REGMAP_CH3_POWER, 1, 0),
+ SND_SOC_DAPM_OUTPUT("OUT0"),
+ SND_SOC_DAPM_OUTPUT("OUT1"),
+ SND_SOC_DAPM_OUTPUT("OUT2"),
+ SND_SOC_DAPM_OUTPUT("OUT3"),
+
+ SND_SOC_DAPM_DAC("ADC0", "Capture", IDT821034_REGMAP_CH0_POWER, 0, 0),
+ SND_SOC_DAPM_DAC("ADC1", "Capture", IDT821034_REGMAP_CH1_POWER, 0, 0),
+ SND_SOC_DAPM_DAC("ADC2", "Capture", IDT821034_REGMAP_CH2_POWER, 0, 0),
+ SND_SOC_DAPM_DAC("ADC3", "Capture", IDT821034_REGMAP_CH3_POWER, 0, 0),
+ 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 chan;
+ unsigned int mask;
+ u8 slot;
+ int ret;
+
+ 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;
+ chan = 0;
+ while (mask && chan < IDT821034_NB_CHANNEL) {
+ if (mask & 0x1) {
+ ret = regmap_write(idt821034->regmap, IDT821034_REGMAP_CH_TS_OUT(chan),
+ slot);
+ if (ret) {
+ dev_err(dai->dev, "chan %d set tx tdm slot failed (%d)\n",
+ chan, ret);
+ return ret;
+ }
+ chan++;
+ }
+ 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_chan_playback = chan;
+
+ mask = rx_mask;
+ slot = 0;
+ chan = 0;
+ while (mask && chan < IDT821034_NB_CHANNEL) {
+ if (mask & 0x1) {
+ ret = regmap_write(idt821034->regmap, IDT821034_REGMAP_CH_TS_IN(chan),
+ slot);
+ if (ret) {
+ dev_err(dai->dev, "chan %d set rx tdm slot failed (%d)\n",
+ chan, ret);
+ return ret;
+ }
+ chan++;
+ }
+ 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_chan_capture = chan;
+
+ 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);
+ u16 mode;
+ int ret;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ mode = IDT821034_REGMAP_GBLCONF_DELAY_MODE;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ mode = IDT821034_REGMAP_GBLCONF_NONDELAY_MODE;
+ break;
+ default:
+ dev_err(dai->dev, "Unsupported format 0x%x\n",
+ fmt & SND_SOC_DAIFMT_FORMAT_MASK);
+ return -EINVAL;
+ }
+
+ ret = regmap_update_bits(idt821034->regmap, IDT821034_REGMAP_GBLCONF,
+ IDT821034_REGMAP_GBLCONF_DELAY_MODE, mode);
+ if (ret)
+ return ret;
+
+ 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 mode;
+ int ret;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_MU_LAW:
+ mode = IDT821034_REGMAP_GBLCONF_MULAW_MODE;
+ break;
+ case SNDRV_PCM_FORMAT_A_LAW:
+ mode = IDT821034_REGMAP_GBLCONF_ALAW_MODE;
+ break;
+ default:
+ dev_err(&idt821034->spi->dev, "Unsupported format 0x%x\n",
+ params_format(params));
+ return -EINVAL;
+ }
+ ret = regmap_update_bits(idt821034->regmap, IDT821034_REGMAP_GBLCONF,
+ IDT821034_REGMAP_GBLCONF_ALAW_MODE, mode);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+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_channels = 0;
+ int ret;
+
+ max_channels = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ idt821034->max_chan_playback :
+ idt821034->max_chan_capture;
+
+ /* Disable stream support (min = 0, max = 0) if no timeslots were
+ * Configured
+ */
+ ret = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ max_channels ? 1 : 0,
+ max_channels);
+ 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(struct idt821034 *idt821034)
+{
+ static const struct reg_sequence reg_reset[] = {
+ { .reg = IDT821034_REGMAP_GBLCONF, .def = 0x0000 },
+ { .reg = IDT821034_REGMAP_CH0_POWER, .def = 0x0000 },
+ { .reg = IDT821034_REGMAP_CH1_POWER, .def = 0x0000 },
+ { .reg = IDT821034_REGMAP_CH2_POWER, .def = 0x0000 },
+ { .reg = IDT821034_REGMAP_CH3_POWER, .def = 0x0000 },
+ { .reg = IDT821034_REGMAP_CH0_GAIN_OUT, .def = IDT821034_GAIN_OUT_INIT_RAW << 1 },
+ { .reg = IDT821034_REGMAP_CH1_GAIN_OUT, .def = IDT821034_GAIN_OUT_INIT_RAW << 1 },
+ { .reg = IDT821034_REGMAP_CH2_GAIN_OUT, .def = IDT821034_GAIN_OUT_INIT_RAW << 1 },
+ { .reg = IDT821034_REGMAP_CH3_GAIN_OUT, .def = IDT821034_GAIN_OUT_INIT_RAW << 1 },
+ { .reg = IDT821034_REGMAP_CH0_GAIN_IN, .def = IDT821034_GAIN_IN_INIT_RAW << 1},
+ { .reg = IDT821034_REGMAP_CH1_GAIN_IN, .def = IDT821034_GAIN_IN_INIT_RAW << 1},
+ { .reg = IDT821034_REGMAP_CH2_GAIN_IN, .def = IDT821034_GAIN_IN_INIT_RAW << 1},
+ { .reg = IDT821034_REGMAP_CH3_GAIN_IN, .def = IDT821034_GAIN_IN_INIT_RAW << 1},
+ };
+
+ return regmap_multi_reg_write(idt821034->regmap,
+ reg_reset, ARRAY_SIZE(reg_reset));
+}
+
+static int idt821034_component_probe(struct snd_soc_component *component)
+{
+ struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ /* reset idt821034 */
+ ret = idt821034_reset(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)
+{
+ unsigned int channel = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset);
+ unsigned int mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset);
+ struct idt821034 *idt821034 = gpiochip_get_data(c);
+ int ret;
+
+ ret = regmap_update_bits(idt821034->regmap, IDT821034_REGMAP_CH_SLIC_DOUT(channel),
+ mask, val ? mask : 0);
+ if (ret) {
+ dev_err(&idt821034->spi->dev, "set gpio %d (%d, 0x%x) failed (%d)\n",
+ offset, channel, mask, ret);
+ }
+}
+
+static int idt821034_chip_gpio_get(struct gpio_chip *c, unsigned int offset)
+{
+ unsigned int channel = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset);
+ unsigned int mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset);
+ struct idt821034 *idt821034 = gpiochip_get_data(c);
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(idt821034->regmap, IDT821034_REGMAP_CH_SLIC_DIN(channel), &val);
+ if (ret) {
+ dev_err(&idt821034->spi->dev, "get gpio %d (%d, 0x%x) failed (%d)\n",
+ offset, channel, mask, ret);
+ }
+
+ return !!(val & mask);
+}
+
+static int idt821034_chip_get_direction(struct gpio_chip *c, unsigned int offset)
+{
+ unsigned int channel = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset);
+ unsigned int mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset);
+ struct idt821034 *idt821034 = gpiochip_get_data(c);
+ int val;
+ int ret;
+
+ ret = regmap_read(idt821034->regmap, IDT821034_REGMAP_CH_SLIC_CONF(channel), &val);
+ if (ret) {
+ dev_err(&idt821034->spi->dev, "get dir gpio %d (%d, 0x%x) failed (%d)\n",
+ offset, channel, mask, ret);
+ return ret;
+ }
+ return val & mask ? GPIO_LINE_DIRECTION_IN : GPIO_LINE_DIRECTION_OUT;
+}
+
+static int idt821034_chip_direction_input(struct gpio_chip *c, unsigned int offset)
+{
+ unsigned int channel = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset);
+ unsigned int mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset);
+ struct idt821034 *idt821034 = gpiochip_get_data(c);
+ int ret;
+
+ ret = regmap_update_bits(idt821034->regmap, IDT821034_REGMAP_CH_SLIC_CONF(channel),
+ mask, mask);
+ if (ret) {
+ dev_err(&idt821034->spi->dev, "dir in gpio %d (%d, 0x%x) failed (%d)\n",
+ offset, channel, mask, ret);
+ return ret;
+ }
+ return 0;
+}
+
+static int idt821034_chip_direction_output(struct gpio_chip *c, unsigned int offset, int val)
+{
+ unsigned int channel = IDT821034_GPIO_OFFSET_TO_SLIC_CHANNEL(offset);
+ unsigned int mask = IDT821034_GPIO_OFFSET_TO_SLIC_MASK(offset);
+ struct idt821034 *idt821034 = gpiochip_get_data(c);
+ int ret;
+
+ idt821034_chip_gpio_set(c, offset, val);
+
+ ret = regmap_update_bits(idt821034->regmap, IDT821034_REGMAP_CH_SLIC_CONF(channel),
+ mask, 0);
+ if (ret) {
+ dev_err(&idt821034->spi->dev, "dir out gpio %d (%d, 0x%x) failed (%d)\n",
+ offset, channel, mask, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int idt821034_reset_gpio(struct idt821034 *idt821034)
+{
+ static const struct reg_sequence reg_reset[] = {
+ /* IO0 and IO1 as input for all channels and output IO set to 0 */
+ { .reg = IDT821034_REGMAP_CH0_SLIC_CONF, .def = 0x3 },
+ { .reg = IDT821034_REGMAP_CH0_SLIC_DOUT, .def = 0 },
+ { .reg = IDT821034_REGMAP_CH1_SLIC_CONF, .def = 0x3 },
+ { .reg = IDT821034_REGMAP_CH1_SLIC_DOUT, .def = 0 },
+ { .reg = IDT821034_REGMAP_CH2_SLIC_CONF, .def = 0x3 },
+ { .reg = IDT821034_REGMAP_CH2_SLIC_DOUT, .def = 0 },
+ { .reg = IDT821034_REGMAP_CH3_SLIC_CONF, .def = 0x3 },
+ { .reg = IDT821034_REGMAP_CH3_SLIC_DOUT, .def = 0 },
+ };
+
+ return regmap_multi_reg_write(idt821034->regmap,
+ reg_reset, ARRAY_SIZE(reg_reset));
+}
+
+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;
+
+ idt821034->regmap = devm_regmap_init(&idt821034->spi->dev, NULL, idt821034,
+ &idt821034_regmap_config);
+ if (IS_ERR(idt821034->regmap)) {
+ ret = PTR_ERR(idt821034->regmap);
+ return ret;
+ }
+
+ 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 | 1234 ++++++++++++++++++++++++++++++++++ 3 files changed, 1248 insertions(+) create mode 100644 sound/soc/codecs/idt821034.c