--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// peb2466.c -- Infineon PEB2466 ALSA SoC driver
+//
+// Copyright 2023 CS GROUP France
+//
+// Author: Herve Codina <herve.codina@bootlin.com>
+
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/firmware.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#define PEB2466_NB_CHANNEL 4
+
+struct peb2466_lookup {
+ u8 (*table)[4];
+ unsigned int count;
+};
+
+#define PEB2466_TLV_SIZE (sizeof((unsigned int []){TLV_DB_SCALE_ITEM(0, 0, 0)}) / \
+ sizeof(unsigned int))
+
+struct peb2466_lkup_ctrl {
+ int reg;
+ unsigned int index;
+ const struct peb2466_lookup *lookup;
+ unsigned int tlv_array[PEB2466_TLV_SIZE];
+};
+
+struct peb2466 {
+ struct spi_device *spi;
+ struct clk *mclk;
+ struct gpio_desc *reset_gpio;
+ u8 spi_tx_buf[2 + 8]; /* Cannot use stack area for SPI (dma-safe memory) */
+ u8 spi_rx_buf[2 + 8]; /* Cannot use stack area for SPI (dma-safe memory) */
+ struct regmap *regmap;
+ struct {
+ struct peb2466_lookup ax_lookup;
+ struct peb2466_lookup ar_lookup;
+ struct peb2466_lkup_ctrl ax_lkup_ctrl;
+ struct peb2466_lkup_ctrl ar_lkup_ctrl;
+ unsigned int tg1_freq_item;
+ unsigned int tg2_freq_item;
+ } ch[PEB2466_NB_CHANNEL];
+ int max_chan_playback;
+ int max_chan_capture;
+ struct {
+ struct gpio_chip gpio_chip;
+ struct mutex lock;
+ struct {
+ unsigned int xr0;
+ unsigned int xr1;
+ unsigned int xr2;
+ unsigned int xr3;
+ } cache;
+ } gpio;
+};
+
+#define PEB2466_CMD_R (1 << 5)
+#define PEB2466_CMD_W (0 << 5)
+
+#define PEB2466_CMD_MASK 0x18
+#define PEB2466_CMD_XOP 0x18 /* XOP is 0bxxx11xxx */
+#define PEB2466_CMD_SOP 0x10 /* SOP is 0bxxx10xxx */
+#define PEB2466_CMD_COP 0x00 /* COP is 0bxxx0xxxx, handle 0bxxx00xxx */
+#define PEB2466_CMD_COP1 0x08 /* COP is 0bxxx0xxxx, handle 0bxxx01xxx */
+
+#define PEB2466_MAKE_XOP(_lsel) (PEB2466_CMD_XOP | (_lsel))
+#define PEB2466_MAKE_SOP(_ad, _lsel) (PEB2466_CMD_SOP | ((_ad) << 6) | (_lsel))
+#define PEB2466_MAKE_COP(_ad, _code) (PEB2466_CMD_COP | ((_ad) << 6) | (_code))
+
+#define PEB2466_CR0(_ch) PEB2466_MAKE_SOP(_ch, 0x0)
+#define PEB2466_CR0_TH (1 << 7)
+#define PEB2466_CR0_IMR1 (1 << 6)
+#define PEB2466_CR0_FRX (1 << 5)
+#define PEB2466_CR0_FRR (1 << 4)
+#define PEB2466_CR0_AX (1 << 3)
+#define PEB2466_CR0_AR (1 << 2)
+#define PEB2466_CR0_THSEL_MASK (0x3 << 0)
+#define PEB2466_CR0_THSEL(_set) ((_set) << 0)
+
+#define PEB2466_CR1(_ch) PEB2466_MAKE_SOP(_ch, 0x1)
+#define PEB2466_CR1_ETG2 (1 << 7)
+#define PEB2466_CR1_ETG1 (1 << 6)
+#define PEB2466_CR1_PTG2 (1 << 5)
+#define PEB2466_CR1_PTG1 (1 << 4)
+#define PEB2466_CR1_LAW_MASK (1 << 3)
+#define PEB2466_CR1_LAW_ALAW (0 << 3)
+#define PEB2466_CR1_LAW_MULAW (1 << 3)
+#define PEB2466_CR1_PU (1 << 0)
+
+#define PEB2466_CR2(_ch) PEB2466_MAKE_SOP(_ch, 0x2)
+#define PEB2466_CR3(_ch) PEB2466_MAKE_SOP(_ch, 0x3)
+#define PEB2466_CR4(_ch) PEB2466_MAKE_SOP(_ch, 0x4)
+#define PEB2466_CR5(_ch) PEB2466_MAKE_SOP(_ch, 0x5)
+
+#define PEB2466_XR0 PEB2466_MAKE_XOP(0x0)
+#define PEB2466_XR1 PEB2466_MAKE_XOP(0x1)
+#define PEB2466_XR2 PEB2466_MAKE_XOP(0x2)
+#define PEB2466_XR3 PEB2466_MAKE_XOP(0x3)
+#define PEB2466_XR4 PEB2466_MAKE_XOP(0x4)
+#define PEB2466_XR5 PEB2466_MAKE_XOP(0x5)
+#define PEB2466_XR5_MCLK_1536 (0x0 << 6)
+#define PEB2466_XR5_MCLK_2048 (0x1 << 6)
+#define PEB2466_XR5_MCLK_4096 (0x2 << 6)
+#define PEB2466_XR5_MCLK_8192 (0x3 << 6)
+
+#define PEB2466_XR6 PEB2466_MAKE_XOP(0x6)
+#define PEB2466_XR6_PCM_OFFSET(_off) ((_off) << 0)
+
+#define PEB2466_XR7 PEB2466_MAKE_XOP(0x7)
+
+#define PEB2466_TH_FILTER_P1(_ch) PEB2466_MAKE_COP(_ch, 0x0)
+#define PEB2466_TH_FILTER_P2(_ch) PEB2466_MAKE_COP(_ch, 0x1)
+#define PEB2466_TH_FILTER_P3(_ch) PEB2466_MAKE_COP(_ch, 0x2)
+#define PEB2466_IMR1_FILTER_P1(_ch) PEB2466_MAKE_COP(_ch, 0x4)
+#define PEB2466_IMR1_FILTER_P2(_ch) PEB2466_MAKE_COP(_ch, 0x5)
+#define PEB2466_FRX_FILTER(_ch) PEB2466_MAKE_COP(_ch, 0x6)
+#define PEB2466_FRR_FILTER(_ch) PEB2466_MAKE_COP(_ch, 0x7)
+#define PEB2466_AX_FILTER(_ch) PEB2466_MAKE_COP(_ch, 0x8)
+#define PEB2466_AR_FILTER(_ch) PEB2466_MAKE_COP(_ch, 0x9)
+#define PEB2466_TG1(_ch) PEB2466_MAKE_COP(_ch, 0xc)
+#define PEB2466_TG2(_ch) PEB2466_MAKE_COP(_ch, 0xd)
+
+static int peb2466_write_byte(struct peb2466 *peb2466, u8 cmd, u8 val)
+{
+ struct spi_transfer xfer = {
+ .tx_buf = &peb2466->spi_tx_buf,
+ .len = 2,
+ };
+
+ peb2466->spi_tx_buf[0] = cmd | PEB2466_CMD_W;
+ peb2466->spi_tx_buf[1] = val;
+
+ dev_dbg(&peb2466->spi->dev, "write byte (cmd %02x) %02x\n",
+ peb2466->spi_tx_buf[0], peb2466->spi_tx_buf[1]);
+
+ return spi_sync_transfer(peb2466->spi, &xfer, 1);
+}
+
+static int peb2466_read_byte(struct peb2466 *peb2466, u8 cmd, u8 *val)
+{
+ struct spi_transfer xfer = {
+ .tx_buf = &peb2466->spi_tx_buf,
+ .rx_buf = &peb2466->spi_rx_buf,
+ .len = 3,
+ };
+ int ret;
+
+ peb2466->spi_tx_buf[0] = cmd | PEB2466_CMD_R;
+
+ ret = spi_sync_transfer(peb2466->spi, &xfer, 1);
+ if (ret)
+ return ret;
+
+ if (peb2466->spi_rx_buf[1] != 0x81) {
+ dev_err(&peb2466->spi->dev,
+ "spi xfer rd (cmd %02x) invalid ident byte (0x%02x)\n",
+ peb2466->spi_tx_buf[0], peb2466->spi_rx_buf[1]);
+ return -EILSEQ;
+ }
+
+ *val = peb2466->spi_rx_buf[2];
+
+ dev_dbg(&peb2466->spi->dev, "read byte (cmd %02x) %02x\n",
+ peb2466->spi_tx_buf[0], *val);
+
+ return 0;
+}
+
+static int peb2466_write_buf(struct peb2466 *peb2466, u8 cmd, const u8 *buf, unsigned int len)
+{
+ struct spi_transfer xfer = {
+ .tx_buf = &peb2466->spi_tx_buf,
+ .len = len + 1,
+ };
+
+ if (len > 8)
+ return -EINVAL;
+
+ peb2466->spi_tx_buf[0] = cmd | PEB2466_CMD_W;
+ memcpy(&peb2466->spi_tx_buf[1], buf, len);
+
+ dev_dbg(&peb2466->spi->dev, "write buf (cmd %02x, %u) %*ph\n",
+ peb2466->spi_tx_buf[0], len, len, &peb2466->spi_tx_buf[1]);
+
+ return spi_sync_transfer(peb2466->spi, &xfer, 1);
+}
+
+static int peb2466_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+ struct peb2466 *peb2466 = context;
+ int ret;
+
+ /*
+ * Only XOP and SOP commands can be handled as registers.
+ * COP commands are handled using direct peb2466_write_buf() calls.
+ */
+ switch (reg & PEB2466_CMD_MASK) {
+ case PEB2466_CMD_XOP:
+ case PEB2466_CMD_SOP:
+ ret = peb2466_write_byte(peb2466, reg, val);
+ break;
+ default:
+ dev_err(&peb2466->spi->dev, "Not a XOP or SOP command\n");
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int peb2466_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+ struct peb2466 *peb2466 = context;
+ int ret;
+ u8 tmp;
+
+ /* Only XOP and SOP commands can be handled as registers */
+ switch (reg & PEB2466_CMD_MASK) {
+ case PEB2466_CMD_XOP:
+ case PEB2466_CMD_SOP:
+ ret = peb2466_read_byte(peb2466, reg, &tmp);
+ *val = tmp;
+ break;
+ default:
+ dev_err(&peb2466->spi->dev, "Not a XOP or SOP command\n");
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static const struct regmap_config peb2466_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0xFF,
+ .reg_write = peb2466_reg_write,
+ .reg_read = peb2466_reg_read,
+ .cache_type = REGCACHE_NONE,
+};
+
+static int peb2466_lkup_ctrl_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct peb2466_lkup_ctrl *lkup_ctrl =
+ (struct peb2466_lkup_ctrl *)kcontrol->private_value;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = lkup_ctrl->lookup->count - 1;
+ return 0;
+}
+
+static int peb2466_lkup_ctrl_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct peb2466_lkup_ctrl *lkup_ctrl =
+ (struct peb2466_lkup_ctrl *)kcontrol->private_value;
+
+ ucontrol->value.integer.value[0] = lkup_ctrl->index;
+ return 0;
+}
+
+static int peb2466_lkup_ctrl_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct peb2466_lkup_ctrl *lkup_ctrl =
+ (struct peb2466_lkup_ctrl *)kcontrol->private_value;
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ unsigned int index;
+ int ret;
+
+ index = ucontrol->value.integer.value[0];
+ if (index >= lkup_ctrl->lookup->count)
+ return -EINVAL;
+
+ if (index == lkup_ctrl->index)
+ return 0;
+
+ ret = peb2466_write_buf(peb2466, lkup_ctrl->reg,
+ lkup_ctrl->lookup->table[index], 4);
+ if (ret)
+ return ret;
+
+ lkup_ctrl->index = index;
+ return 1; /* The value changed */
+}
+
+static int peb2466_add_lkup_ctrl(struct snd_soc_component *component,
+ struct peb2466_lkup_ctrl *lkup_ctrl,
+ const char *name, int min_val, int step)
+{
+ DECLARE_TLV_DB_SCALE(tlv_array, min_val, step, 0);
+ struct snd_kcontrol_new control = {0};
+
+ BUILD_BUG_ON(sizeof(lkup_ctrl->tlv_array) < sizeof(tlv_array));
+ memcpy(lkup_ctrl->tlv_array, tlv_array, sizeof(tlv_array));
+
+ control.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ control.name = name;
+ control.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+ SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ control.tlv.p = lkup_ctrl->tlv_array;
+ control.info = peb2466_lkup_ctrl_info;
+ control.get = peb2466_lkup_ctrl_get;
+ control.put = peb2466_lkup_ctrl_put;
+ control.private_value = (unsigned long)lkup_ctrl;
+
+ return snd_soc_add_component_controls(component, &control, 1);
+}
+
+enum peb2466_tone_freq {
+ PEB2466_TONE_697HZ,
+ PEB2466_TONE_800HZ,
+ PEB2466_TONE_950HZ,
+ PEB2466_TONE_1000HZ,
+ PEB2466_TONE_1008HZ,
+ PEB2466_TONE_2000HZ,
+};
+
+static const u8 peb2466_tone_lookup[][4] = {
+ [PEB2466_TONE_697HZ] = {0x0a, 0x33, 0x5a, 0x2c},
+ [PEB2466_TONE_800HZ] = {0x12, 0xD6, 0x5a, 0xc0},
+ [PEB2466_TONE_950HZ] = {0x1c, 0xf0, 0x5c, 0xc0},
+ [PEB2466_TONE_1000HZ] = {0}, /* lookup value not used for 1000Hz */
+ [PEB2466_TONE_1008HZ] = {0x1a, 0xae, 0x57, 0x70},
+ [PEB2466_TONE_2000HZ] = {0x00, 0x80, 0x50, 0x09},
+};
+
+static const char * const peb2466_tone_freq_txt[] = {
+ [PEB2466_TONE_697HZ] = "697Hz",
+ [PEB2466_TONE_800HZ] = "800Hz",
+ [PEB2466_TONE_950HZ] = "950Hz",
+ [PEB2466_TONE_1000HZ] = "1000Hz",
+ [PEB2466_TONE_1008HZ] = "1008Hz",
+ [PEB2466_TONE_2000HZ] = "2000Hz"
+};
+
+static const struct soc_enum peb2466_tg_freq[][2] = {
+ [0] = {
+ SOC_ENUM_SINGLE(PEB2466_TG1(0), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt),
+ SOC_ENUM_SINGLE(PEB2466_TG2(0), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt)
+ },
+ [1] = {
+ SOC_ENUM_SINGLE(PEB2466_TG1(1), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt),
+ SOC_ENUM_SINGLE(PEB2466_TG2(1), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt)
+ },
+ [2] = {
+ SOC_ENUM_SINGLE(PEB2466_TG1(2), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt),
+ SOC_ENUM_SINGLE(PEB2466_TG2(2), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt)
+ },
+ [3] = {
+ SOC_ENUM_SINGLE(PEB2466_TG1(3), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt),
+ SOC_ENUM_SINGLE(PEB2466_TG2(3), 0, ARRAY_SIZE(peb2466_tone_freq_txt),
+ peb2466_tone_freq_txt)
+ }
+};
+
+static int peb2466_tg_freq_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+
+ switch (e->reg) {
+ case PEB2466_TG1(0):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[0].tg1_freq_item;
+ break;
+ case PEB2466_TG2(0):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[0].tg2_freq_item;
+ break;
+ case PEB2466_TG1(1):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[1].tg1_freq_item;
+ break;
+ case PEB2466_TG2(1):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[1].tg2_freq_item;
+ break;
+ case PEB2466_TG1(2):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[2].tg1_freq_item;
+ break;
+ case PEB2466_TG2(2):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[2].tg2_freq_item;
+ break;
+ case PEB2466_TG1(3):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[3].tg1_freq_item;
+ break;
+ case PEB2466_TG2(3):
+ ucontrol->value.enumerated.item[0] = peb2466->ch[3].tg2_freq_item;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int peb2466_tg_freq_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int *tg_freq_item;
+ u8 cr1_reg, cr1_mask;
+ unsigned int index;
+ int ret;
+
+ index = ucontrol->value.enumerated.item[0];
+
+ if (index >= ARRAY_SIZE(peb2466_tone_lookup))
+ return -EINVAL;
+
+ switch (e->reg) {
+ case PEB2466_TG1(0):
+ tg_freq_item = &peb2466->ch[0].tg1_freq_item;
+ cr1_reg = PEB2466_CR1(0);
+ cr1_mask = PEB2466_CR1_PTG1;
+ break;
+ case PEB2466_TG2(0):
+ tg_freq_item = &peb2466->ch[0].tg2_freq_item;
+ cr1_reg = PEB2466_CR1(0);
+ cr1_mask = PEB2466_CR1_PTG2;
+ break;
+ case PEB2466_TG1(1):
+ tg_freq_item = &peb2466->ch[1].tg1_freq_item;
+ cr1_reg = PEB2466_CR1(1);
+ cr1_mask = PEB2466_CR1_PTG1;
+ break;
+ case PEB2466_TG2(1):
+ tg_freq_item = &peb2466->ch[1].tg2_freq_item;
+ cr1_reg = PEB2466_CR1(1);
+ cr1_mask = PEB2466_CR1_PTG2;
+ break;
+ case PEB2466_TG1(2):
+ tg_freq_item = &peb2466->ch[2].tg1_freq_item;
+ cr1_reg = PEB2466_CR1(2);
+ cr1_mask = PEB2466_CR1_PTG1;
+ break;
+ case PEB2466_TG2(2):
+ tg_freq_item = &peb2466->ch[2].tg2_freq_item;
+ cr1_reg = PEB2466_CR1(2);
+ cr1_mask = PEB2466_CR1_PTG2;
+ break;
+ case PEB2466_TG1(3):
+ tg_freq_item = &peb2466->ch[3].tg1_freq_item;
+ cr1_reg = PEB2466_CR1(3);
+ cr1_mask = PEB2466_CR1_PTG1;
+ break;
+ case PEB2466_TG2(3):
+ tg_freq_item = &peb2466->ch[3].tg2_freq_item;
+ cr1_reg = PEB2466_CR1(3);
+ cr1_mask = PEB2466_CR1_PTG2;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (index == *tg_freq_item)
+ return 0;
+
+ if (index == PEB2466_TONE_1000HZ) {
+ ret = regmap_update_bits(peb2466->regmap, cr1_reg, cr1_mask, 0);
+ if (ret)
+ return ret;
+ } else {
+ ret = peb2466_write_buf(peb2466, e->reg, peb2466_tone_lookup[index], 4);
+ if (ret)
+ return ret;
+ ret = regmap_update_bits(peb2466->regmap, cr1_reg, cr1_mask, cr1_mask);
+ if (ret)
+ return ret;
+ }
+
+ *tg_freq_item = index;
+ return 1; /* The value changed */
+}
+
+static const struct snd_kcontrol_new peb2466_ch0_out_mix_controls[] = {
+ SOC_DAPM_SINGLE("TG1 Switch", PEB2466_CR1(0), 6, 1, 0),
+ SOC_DAPM_SINGLE("TG2 Switch", PEB2466_CR1(0), 7, 1, 0),
+ SOC_DAPM_SINGLE("Voice Switch", PEB2466_CR2(0), 0, 1, 0)
+};
+
+static const struct snd_kcontrol_new peb2466_ch1_out_mix_controls[] = {
+ SOC_DAPM_SINGLE("TG1 Switch", PEB2466_CR1(1), 6, 1, 0),
+ SOC_DAPM_SINGLE("TG2 Switch", PEB2466_CR1(1), 7, 1, 0),
+ SOC_DAPM_SINGLE("Voice Switch", PEB2466_CR2(1), 0, 1, 0)
+};
+
+static const struct snd_kcontrol_new peb2466_ch2_out_mix_controls[] = {
+ SOC_DAPM_SINGLE("TG1 Switch", PEB2466_CR1(2), 6, 1, 0),
+ SOC_DAPM_SINGLE("TG2 Switch", PEB2466_CR1(2), 7, 1, 0),
+ SOC_DAPM_SINGLE("Voice Switch", PEB2466_CR2(2), 0, 1, 0)
+};
+
+static const struct snd_kcontrol_new peb2466_ch3_out_mix_controls[] = {
+ SOC_DAPM_SINGLE("TG1 Switch", PEB2466_CR1(3), 6, 1, 0),
+ SOC_DAPM_SINGLE("TG2 Switch", PEB2466_CR1(3), 7, 1, 0),
+ SOC_DAPM_SINGLE("Voice Switch", PEB2466_CR2(3), 0, 1, 0)
+};
+
+static const struct snd_kcontrol_new peb2466_controls[] = {
+ /* Attenuators */
+ SOC_SINGLE("DAC0 -6dB Playback Switch", PEB2466_CR3(0), 2, 1, 0),
+ SOC_SINGLE("DAC1 -6dB Playback Switch", PEB2466_CR3(1), 2, 1, 0),
+ SOC_SINGLE("DAC2 -6dB Playback Switch", PEB2466_CR3(2), 2, 1, 0),
+ SOC_SINGLE("DAC3 -6dB Playback Switch", PEB2466_CR3(3), 2, 1, 0),
+
+ /* Amplifiers */
+ SOC_SINGLE("ADC0 +6dB Capture Switch", PEB2466_CR3(0), 3, 1, 0),
+ SOC_SINGLE("ADC1 +6dB Capture Switch", PEB2466_CR3(1), 3, 1, 0),
+ SOC_SINGLE("ADC2 +6dB Capture Switch", PEB2466_CR3(2), 3, 1, 0),
+ SOC_SINGLE("ADC3 +6dB Capture Switch", PEB2466_CR3(3), 3, 1, 0),
+
+ /* Tone generators */
+ SOC_ENUM_EXT("DAC0 TG1 Freq", peb2466_tg_freq[0][0],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+ SOC_ENUM_EXT("DAC1 TG1 Freq", peb2466_tg_freq[1][0],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+ SOC_ENUM_EXT("DAC2 TG1 Freq", peb2466_tg_freq[2][0],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+ SOC_ENUM_EXT("DAC3 TG1 Freq", peb2466_tg_freq[3][0],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+
+ SOC_ENUM_EXT("DAC0 TG2 Freq", peb2466_tg_freq[0][1],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+ SOC_ENUM_EXT("DAC1 TG2 Freq", peb2466_tg_freq[1][1],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+ SOC_ENUM_EXT("DAC2 TG2 Freq", peb2466_tg_freq[2][1],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+ SOC_ENUM_EXT("DAC3 TG2 Freq", peb2466_tg_freq[3][1],
+ peb2466_tg_freq_get, peb2466_tg_freq_put),
+};
+
+static const struct snd_soc_dapm_widget peb2466_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("CH0 PWR", PEB2466_CR1(0), 0, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("CH1 PWR", PEB2466_CR1(1), 0, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("CH2 PWR", PEB2466_CR1(2), 0, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("CH3 PWR", PEB2466_CR1(3), 0, 0, NULL, 0),
+
+ SND_SOC_DAPM_DAC("CH0 DIN", "Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("CH1 DIN", "Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("CH2 DIN", "Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("CH3 DIN", "Playback", SND_SOC_NOPM, 0, 0),
+
+ SND_SOC_DAPM_SIGGEN("CH0 TG1"),
+ SND_SOC_DAPM_SIGGEN("CH1 TG1"),
+ SND_SOC_DAPM_SIGGEN("CH2 TG1"),
+ SND_SOC_DAPM_SIGGEN("CH3 TG1"),
+
+ SND_SOC_DAPM_SIGGEN("CH0 TG2"),
+ SND_SOC_DAPM_SIGGEN("CH1 TG2"),
+ SND_SOC_DAPM_SIGGEN("CH2 TG2"),
+ SND_SOC_DAPM_SIGGEN("CH3 TG2"),
+
+ SND_SOC_DAPM_MIXER("DAC0 Mixer", SND_SOC_NOPM, 0, 0,
+ peb2466_ch0_out_mix_controls,
+ ARRAY_SIZE(peb2466_ch0_out_mix_controls)),
+ SND_SOC_DAPM_MIXER("DAC1 Mixer", SND_SOC_NOPM, 0, 0,
+ peb2466_ch1_out_mix_controls,
+ ARRAY_SIZE(peb2466_ch1_out_mix_controls)),
+ SND_SOC_DAPM_MIXER("DAC2 Mixer", SND_SOC_NOPM, 0, 0,
+ peb2466_ch2_out_mix_controls,
+ ARRAY_SIZE(peb2466_ch2_out_mix_controls)),
+ SND_SOC_DAPM_MIXER("DAC3 Mixer", SND_SOC_NOPM, 0, 0,
+ peb2466_ch3_out_mix_controls,
+ ARRAY_SIZE(peb2466_ch3_out_mix_controls)),
+
+ SND_SOC_DAPM_PGA("DAC0 PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("DAC1 PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("DAC2 PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("DAC3 PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
+
+ SND_SOC_DAPM_OUTPUT("OUT0"),
+ SND_SOC_DAPM_OUTPUT("OUT1"),
+ SND_SOC_DAPM_OUTPUT("OUT2"),
+ SND_SOC_DAPM_OUTPUT("OUT3"),
+
+ SND_SOC_DAPM_INPUT("IN0"),
+ SND_SOC_DAPM_INPUT("IN1"),
+ SND_SOC_DAPM_INPUT("IN2"),
+ SND_SOC_DAPM_INPUT("IN3"),
+
+ SND_SOC_DAPM_DAC("ADC0", "Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("ADC1", "Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("ADC2", "Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("ADC3", "Capture", SND_SOC_NOPM, 0, 0),
+};
+
+static const struct snd_soc_dapm_route peb2466_dapm_routes[] = {
+ { "CH0 DIN", NULL, "CH0 PWR" },
+ { "CH1 DIN", NULL, "CH1 PWR" },
+ { "CH2 DIN", NULL, "CH2 PWR" },
+ { "CH3 DIN", NULL, "CH3 PWR" },
+
+ { "CH0 TG1", NULL, "CH0 PWR" },
+ { "CH1 TG1", NULL, "CH1 PWR" },
+ { "CH2 TG1", NULL, "CH2 PWR" },
+ { "CH3 TG1", NULL, "CH3 PWR" },
+
+ { "CH0 TG2", NULL, "CH0 PWR" },
+ { "CH1 TG2", NULL, "CH1 PWR" },
+ { "CH2 TG2", NULL, "CH2 PWR" },
+ { "CH3 TG2", NULL, "CH3 PWR" },
+
+ { "DAC0 Mixer", "TG1 Switch", "CH0 TG1" },
+ { "DAC0 Mixer", "TG2 Switch", "CH0 TG2" },
+ { "DAC0 Mixer", "Voice Switch", "CH0 DIN" },
+ { "DAC0 Mixer", NULL, "CH0 DIN" },
+
+ { "DAC1 Mixer", "TG1 Switch", "CH1 TG1" },
+ { "DAC1 Mixer", "TG2 Switch", "CH1 TG2" },
+ { "DAC1 Mixer", "Voice Switch", "CH1 DIN" },
+ { "DAC1 Mixer", NULL, "CH1 DIN" },
+
+ { "DAC2 Mixer", "TG1 Switch", "CH2 TG1" },
+ { "DAC2 Mixer", "TG2 Switch", "CH2 TG2" },
+ { "DAC2 Mixer", "Voice Switch", "CH2 DIN" },
+ { "DAC2 Mixer", NULL, "CH2 DIN" },
+
+ { "DAC3 Mixer", "TG1 Switch", "CH3 TG1" },
+ { "DAC3 Mixer", "TG2 Switch", "CH3 TG2" },
+ { "DAC3 Mixer", "Voice Switch", "CH3 DIN" },
+ { "DAC3 Mixer", NULL, "CH3 DIN" },
+
+ { "DAC0 PGA", NULL, "DAC0 Mixer" },
+ { "DAC1 PGA", NULL, "DAC1 Mixer" },
+ { "DAC2 PGA", NULL, "DAC2 Mixer" },
+ { "DAC3 PGA", NULL, "DAC3 Mixer" },
+
+ { "OUT0", NULL, "DAC0 PGA" },
+ { "OUT1", NULL, "DAC1 PGA" },
+ { "OUT2", NULL, "DAC2 PGA" },
+ { "OUT3", NULL, "DAC3 PGA" },
+
+ { "ADC0", NULL, "IN0" },
+ { "ADC1", NULL, "IN1" },
+ { "ADC2", NULL, "IN2" },
+ { "ADC3", NULL, "IN3" },
+
+ { "ADC0", NULL, "CH0 PWR" },
+ { "ADC1", NULL, "CH1 PWR" },
+ { "ADC2", NULL, "CH2 PWR" },
+ { "ADC3", NULL, "CH3 PWR" },
+};
+
+static int peb2466_dai_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+ unsigned int rx_mask, int slots, int width)
+{
+ struct peb2466 *peb2466 = 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 < PEB2466_NB_CHANNEL) {
+ if (mask & 0x1) {
+ ret = regmap_write(peb2466->regmap, PEB2466_CR5(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, PEB2466_NB_CHANNEL);
+ return -EINVAL;
+ }
+ peb2466->max_chan_playback = chan;
+
+ mask = rx_mask;
+ slot = 0;
+ chan = 0;
+ while (mask && chan < PEB2466_NB_CHANNEL) {
+ if (mask & 0x1) {
+ ret = regmap_write(peb2466->regmap, PEB2466_CR4(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, PEB2466_NB_CHANNEL);
+ return -EINVAL;
+ }
+ peb2466->max_chan_capture = chan;
+
+ return 0;
+}
+
+static int peb2466_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(dai->component);
+ u8 xr6;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ xr6 = PEB2466_XR6_PCM_OFFSET(1);
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ xr6 = PEB2466_XR6_PCM_OFFSET(0);
+ break;
+ default:
+ dev_err(dai->dev, "Unsupported format 0x%x\n",
+ fmt & SND_SOC_DAIFMT_FORMAT_MASK);
+ return -EINVAL;
+ }
+ return regmap_write(peb2466->regmap, PEB2466_XR6, xr6);
+}
+
+static int peb2466_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(dai->component);
+ unsigned int ch;
+ int ret;
+ u8 cr1;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_MU_LAW:
+ cr1 = PEB2466_CR1_LAW_MULAW;
+ break;
+ case SNDRV_PCM_FORMAT_A_LAW:
+ cr1 = PEB2466_CR1_LAW_ALAW;
+ break;
+ default:
+ dev_err(&peb2466->spi->dev, "Unsupported format 0x%x\n",
+ params_format(params));
+ return -EINVAL;
+ }
+
+ for (ch = 0; ch < PEB2466_NB_CHANNEL; ch++) {
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR1(ch),
+ PEB2466_CR1_LAW_MASK, cr1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const unsigned int peb2466_sample_bits[] = {8};
+
+static struct snd_pcm_hw_constraint_list peb2466_sample_bits_constr = {
+ .list = peb2466_sample_bits,
+ .count = ARRAY_SIZE(peb2466_sample_bits),
+};
+
+static int peb2466_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(dai->component);
+ unsigned int max_ch;
+ int ret;
+
+ max_ch = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ peb2466->max_chan_playback : peb2466->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_ch ? 1 : 0, max_ch);
+ if (ret < 0)
+ return ret;
+
+ return snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
+ &peb2466_sample_bits_constr);
+}
+
+static u64 peb2466_dai_formats[] = {
+ SND_SOC_POSSIBLE_DAIFMT_DSP_A |
+ SND_SOC_POSSIBLE_DAIFMT_DSP_B,
+};
+
+static const struct snd_soc_dai_ops peb2466_dai_ops = {
+ .startup = peb2466_dai_startup,
+ .hw_params = peb2466_dai_hw_params,
+ .set_tdm_slot = peb2466_dai_set_tdm_slot,
+ .set_fmt = peb2466_dai_set_fmt,
+ .auto_selectable_formats = peb2466_dai_formats,
+ .num_auto_selectable_formats = ARRAY_SIZE(peb2466_dai_formats),
+};
+
+static struct snd_soc_dai_driver peb2466_dai_driver = {
+ .name = "peb2466",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = PEB2466_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 = PEB2466_NB_CHANNEL,
+ .rates = SNDRV_PCM_RATE_8000,
+ .formats = SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
+ },
+ .ops = &peb2466_dai_ops,
+};
+
+static int peb2466_reset_audio(struct peb2466 *peb2466)
+{
+ static const struct reg_sequence reg_reset[] = {
+ { .reg = PEB2466_XR6, .def = 0x00 },
+
+ { .reg = PEB2466_CR5(0), .def = 0x00 },
+ { .reg = PEB2466_CR4(0), .def = 0x00 },
+ { .reg = PEB2466_CR3(0), .def = 0x00 },
+ { .reg = PEB2466_CR2(0), .def = 0x00 },
+ { .reg = PEB2466_CR1(0), .def = 0x00 },
+ { .reg = PEB2466_CR0(0), .def = PEB2466_CR0_IMR1 },
+
+ { .reg = PEB2466_CR5(1), .def = 0x00 },
+ { .reg = PEB2466_CR4(1), .def = 0x00 },
+ { .reg = PEB2466_CR3(1), .def = 0x00 },
+ { .reg = PEB2466_CR2(1), .def = 0x00 },
+ { .reg = PEB2466_CR1(1), .def = 0x00 },
+ { .reg = PEB2466_CR0(1), .def = PEB2466_CR0_IMR1 },
+
+ { .reg = PEB2466_CR5(2), .def = 0x00 },
+ { .reg = PEB2466_CR4(2), .def = 0x00 },
+ { .reg = PEB2466_CR3(2), .def = 0x00 },
+ { .reg = PEB2466_CR2(2), .def = 0x00 },
+ { .reg = PEB2466_CR1(2), .def = 0x00 },
+ { .reg = PEB2466_CR0(2), .def = PEB2466_CR0_IMR1 },
+
+ { .reg = PEB2466_CR5(3), .def = 0x00 },
+ { .reg = PEB2466_CR4(3), .def = 0x00 },
+ { .reg = PEB2466_CR3(3), .def = 0x00 },
+ { .reg = PEB2466_CR2(3), .def = 0x00 },
+ { .reg = PEB2466_CR1(3), .def = 0x00 },
+ { .reg = PEB2466_CR0(3), .def = PEB2466_CR0_IMR1 },
+ };
+ static const u8 imr1_p1[8] = {0x00, 0x90, 0x09, 0x00, 0x90, 0x09, 0x00, 0x00};
+ static const u8 imr1_p2[8] = {0x7F, 0xFF, 0x00, 0x00, 0x90, 0x14, 0x40, 0x08};
+ static const u8 zero[8] = {0};
+ int ret;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ peb2466->ch[i].tg1_freq_item = PEB2466_TONE_1000HZ;
+ peb2466->ch[i].tg2_freq_item = PEB2466_TONE_1000HZ;
+
+ /*
+ * Even if not used, disabling IM/R1 filter is not recommended.
+ * Instead, we must configure it with default coefficients and
+ * enable it.
+ * The filter will be enabled right after (in the following
+ * regmap_multi_reg_write() call).
+ */
+ ret = peb2466_write_buf(peb2466, PEB2466_IMR1_FILTER_P1(i), imr1_p1, 8);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_IMR1_FILTER_P2(i), imr1_p2, 8);
+ if (ret)
+ return ret;
+
+ /* Set all other filters coefficients to zero */
+ ret = peb2466_write_buf(peb2466, PEB2466_TH_FILTER_P1(i), zero, 8);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_TH_FILTER_P2(i), zero, 8);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_TH_FILTER_P3(i), zero, 8);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_FRX_FILTER(i), zero, 8);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_FRR_FILTER(i), zero, 8);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_AX_FILTER(i), zero, 4);
+ if (ret)
+ return ret;
+ ret = peb2466_write_buf(peb2466, PEB2466_AR_FILTER(i), zero, 4);
+ if (ret)
+ return ret;
+ }
+
+ return regmap_multi_reg_write(peb2466->regmap, reg_reset, ARRAY_SIZE(reg_reset));
+}
+
+static int peb2466_fw_parse_thfilter(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ u8 mask;
+ int ret;
+ int i;
+
+ dev_info(component->dev, "fw TH filter: mask %x, %*phN\n", *data,
+ lng - 1, data + 1);
+
+ /*
+ * TH_FILTER TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 8 bytes: TH-Filter coefficients part1
+ * - @9 8 bytes: TH-Filter coefficients part2
+ * - @17 8 bytes: TH-Filter coefficients part3
+ */
+ mask = *data;
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_TH, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_TH_FILTER_P1(i), data + 1, 8);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_TH_FILTER_P2(i), data + 9, 8);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_TH_FILTER_P3(i), data + 17, 8);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_TH | PEB2466_CR0_THSEL_MASK,
+ PEB2466_CR0_TH | PEB2466_CR0_THSEL(i));
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static int peb2466_fw_parse_imr1filter(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ u8 mask;
+ int ret;
+ int i;
+
+ dev_info(component->dev, "fw IM/R1 filter: mask %x, %*phN\n", *data,
+ lng - 1, data + 1);
+
+ /*
+ * IMR1_FILTER TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 8 bytes: IM/R1-Filter coefficients part1
+ * - @9 8 bytes: IM/R1-Filter coefficients part2
+ */
+ mask = *data;
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_IMR1, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_IMR1_FILTER_P1(i), data + 1, 8);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_IMR1_FILTER_P2(i), data + 9, 8);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_IMR1, PEB2466_CR0_IMR1);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static int peb2466_fw_parse_frxfilter(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ u8 mask;
+ int ret;
+ int i;
+
+ dev_info(component->dev, "fw FRX filter: mask %x, %*phN\n", *data,
+ lng - 1, data + 1);
+
+ /*
+ * FRX_FILTER TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 8 bytes: FRX-Filter coefficients
+ */
+ mask = *data;
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_FRX, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_FRX_FILTER(i), data + 1, 8);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_FRX, PEB2466_CR0_FRX);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static int peb2466_fw_parse_frrfilter(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ u8 mask;
+ int ret;
+ int i;
+
+ dev_info(component->dev, "fw FRR filter: mask %x, %*phN\n", *data,
+ lng - 1, data + 1);
+
+ /*
+ * FRR_FILTER TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 8 bytes: FRR-Filter coefficients
+ */
+ mask = *data;
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_FRR, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_FRR_FILTER(i), data + 1, 8);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_FRR, PEB2466_CR0_FRR);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static int peb2466_fw_parse_axfilter(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ u8 mask;
+ int ret;
+ int i;
+
+ dev_info(component->dev, "fw AX filter: mask %x, %*phN\n", *data,
+ lng - 1, data + 1);
+
+ /*
+ * AX_FILTER TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 4 bytes: AX-Filter coefficients
+ */
+ mask = *data;
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AX, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_AX_FILTER(i), data + 1, 4);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AX, PEB2466_CR0_AX);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static int peb2466_fw_parse_arfilter(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ u8 mask;
+ int ret;
+ int i;
+
+ dev_info(component->dev, "fw AR filter: mask %x, %*phN\n", *data,
+ lng - 1, data + 1);
+
+ /*
+ * AR_FILTER TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 4 bytes: AR-Filter coefficients
+ */
+ mask = *data;
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AR, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_AR_FILTER(i), data + 1, 4);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AR, PEB2466_CR0_AR);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static const char * const peb2466_ax_ctrl_names[] = {
+ "ADC0 Capture Volume",
+ "ADC1 Capture Volume",
+ "ADC2 Capture Volume",
+ "ADC3 Capture Volume",
+};
+
+static int peb2466_fw_parse_axtable(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ struct peb2466_lkup_ctrl *lkup_ctrl;
+ struct peb2466_lookup *lookup;
+ u8 (*table)[4];
+ u32 table_size;
+ u32 init_index;
+ s32 min_val;
+ s32 step;
+ u8 mask;
+ int ret;
+ int i;
+
+ /*
+ * AX_TABLE TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 32bits signed: Min table value in centi dB (MinVal)
+ * ie -300 means -3.0 dB
+ * - @5 32bits signed: Step from on item to other item in centi dB (Step)
+ * ie 25 means 0.25 dB)
+ * - @9 32bits unsigned: Item index in the table to use for the initial
+ * value
+ * - @13 N*4 bytes: Table composed of 4 bytes items.
+ * Each item correspond to an AX filter value.
+ *
+ * The conversion from raw value item in the table to/from the value in
+ * dB is: Raw value at index i <-> (MinVal + i * Step) in centi dB.
+ */
+
+ /* Check Lng and extract the table size. */
+ if (lng < 13 || ((lng - 13) % 4)) {
+ dev_err(component->dev, "fw AX table lng %u invalid\n", lng);
+ return -EINVAL;
+ }
+ table_size = lng - 13;
+
+ min_val = get_unaligned_be32(data + 1);
+ step = get_unaligned_be32(data + 5);
+ init_index = get_unaligned_be32(data + 9);
+ if (init_index >= (table_size / 4)) {
+ dev_err(component->dev, "fw AX table index %u out of table[%u]\n",
+ init_index, table_size / 4);
+ return -EINVAL;
+ }
+
+ dev_info(component->dev,
+ "fw AX table: mask %x, min %d, step %d, %u items, tbl[%u] %*phN\n",
+ *data, min_val, step, table_size / 4, init_index,
+ 4, data + 13 + (init_index * 4));
+
+ BUILD_BUG_ON(sizeof(*table) != 4);
+ table = devm_kzalloc(&peb2466->spi->dev, table_size, GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+ memcpy(table, data + 13, table_size);
+
+ mask = *data;
+ BUILD_BUG_ON(ARRAY_SIZE(peb2466_ax_ctrl_names) != ARRAY_SIZE(peb2466->ch));
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ lookup = &peb2466->ch[i].ax_lookup;
+ lookup->table = table;
+ lookup->count = table_size / 4;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AX, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_AX_FILTER(i),
+ lookup->table[init_index], 4);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AX, PEB2466_CR0_AX);
+ if (ret)
+ return ret;
+
+ lkup_ctrl = &peb2466->ch[i].ax_lkup_ctrl;
+ lkup_ctrl->lookup = lookup;
+ lkup_ctrl->reg = PEB2466_AX_FILTER(i);
+ lkup_ctrl->index = init_index;
+
+ ret = peb2466_add_lkup_ctrl(component, lkup_ctrl,
+ peb2466_ax_ctrl_names[i],
+ min_val, step);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static const char * const peb2466_ar_ctrl_names[] = {
+ "DAC0 Playback Volume",
+ "DAC1 Playback Volume",
+ "DAC2 Playback Volume",
+ "DAC3 Playback Volume",
+};
+
+static int peb2466_fw_parse_artable(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ struct peb2466_lkup_ctrl *lkup_ctrl;
+ struct peb2466_lookup *lookup;
+ u8 (*table)[4];
+ u32 table_size;
+ u32 init_index;
+ s32 min_val;
+ s32 step;
+ u8 mask;
+ int ret;
+ int i;
+
+ /*
+ * AR_TABLE TLV data:
+ * - @0 1 byte: Chan mask (bit set means related channel is concerned)
+ * - @1 32bits signed: Min table value in centi dB (MinVal)
+ * ie -300 means -3.0 dB
+ * - @5 32bits signed: Step from on item to other item in centi dB (Step)
+ * ie 25 means 0.25 dB)
+ * - @9 32bits unsigned: Item index in the table to use for the initial
+ * value
+ * - @13 N*4 bytes: Table composed of 4 bytes items.
+ * Each item correspond to an AR filter value.
+ *
+ * The conversion from raw value item in the table to/from the value in
+ * dB is: Raw value at index i <-> (MinVal + i * Step) in centi dB.
+ */
+
+ /* Check Lng and extract the table size. */
+ if (lng < 13 || ((lng - 13) % 4)) {
+ dev_err(component->dev, "fw AR table lng %u invalid\n", lng);
+ return -EINVAL;
+ }
+ table_size = lng - 13;
+
+ min_val = get_unaligned_be32(data + 1);
+ step = get_unaligned_be32(data + 5);
+ init_index = get_unaligned_be32(data + 9);
+ if (init_index >= (table_size / 4)) {
+ dev_err(component->dev, "fw AR table index %u out of table[%u]\n",
+ init_index, table_size / 4);
+ return -EINVAL;
+ }
+
+ dev_info(component->dev,
+ "fw AR table: mask %x, min %d, step %d, %u items, tbl[%u] %*phN\n",
+ *data, min_val, step, table_size / 4, init_index,
+ 4, data + 13 + (init_index * 4));
+
+ BUILD_BUG_ON(sizeof(*table) != 4);
+ table = devm_kzalloc(&peb2466->spi->dev, table_size, GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+ memcpy(table, data + 13, table_size);
+
+ mask = *data;
+ BUILD_BUG_ON(ARRAY_SIZE(peb2466_ar_ctrl_names) != ARRAY_SIZE(peb2466->ch));
+ for (i = 0; i < ARRAY_SIZE(peb2466->ch); i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ lookup = &peb2466->ch[i].ar_lookup;
+ lookup->table = table;
+ lookup->count = table_size / 4;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AR, 0);
+ if (ret)
+ return ret;
+
+ ret = peb2466_write_buf(peb2466, PEB2466_AR_FILTER(i),
+ lookup->table[init_index], 4);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(peb2466->regmap, PEB2466_CR0(i),
+ PEB2466_CR0_AR, PEB2466_CR0_AR);
+ if (ret)
+ return ret;
+
+ lkup_ctrl = &peb2466->ch[i].ar_lkup_ctrl;
+ lkup_ctrl->lookup = lookup;
+ lkup_ctrl->reg = PEB2466_AR_FILTER(i);
+ lkup_ctrl->index = init_index;
+
+ ret = peb2466_add_lkup_ctrl(component, lkup_ctrl,
+ peb2466_ar_ctrl_names[i],
+ min_val, step);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+struct peb2466_fw_tag_def {
+ u16 tag;
+ u32 lng_min;
+ u32 lng_max;
+ int (*parse)(struct snd_soc_component *component,
+ u16 tag, u32 lng, const u8 *data);
+};
+
+#define PEB2466_TAG_DEF_LNG_EQ(__tag, __lng, __parse) { \
+ .tag = __tag, \
+ .lng_min = __lng, \
+ .lng_max = __lng, \
+ .parse = __parse, \
+}
+
+#define PEB2466_TAG_DEF_LNG_MIN(__tag, __lng_min, __parse) { \
+ .tag = __tag, \
+ .lng_min = __lng_min, \
+ .lng_max = U32_MAX, \
+ .parse = __parse, \
+}
+
+static const struct peb2466_fw_tag_def peb2466_fw_tag_defs[] = {
+ /* TH FILTER */
+ PEB2466_TAG_DEF_LNG_EQ(0x0001, 1 + 3 * 8, peb2466_fw_parse_thfilter),
+ /* IMR1 FILTER */
+ PEB2466_TAG_DEF_LNG_EQ(0x0002, 1 + 2 * 8, peb2466_fw_parse_imr1filter),
+ /* FRX FILTER */
+ PEB2466_TAG_DEF_LNG_EQ(0x0003, 1 + 8, peb2466_fw_parse_frxfilter),
+ /* FRR FILTER */
+ PEB2466_TAG_DEF_LNG_EQ(0x0004, 1 + 8, peb2466_fw_parse_frrfilter),
+ /* AX FILTER */
+ PEB2466_TAG_DEF_LNG_EQ(0x0005, 1 + 4, peb2466_fw_parse_axfilter),
+ /* AR FILTER */
+ PEB2466_TAG_DEF_LNG_EQ(0x0006, 1 + 4, peb2466_fw_parse_arfilter),
+ /* AX TABLE */
+ PEB2466_TAG_DEF_LNG_MIN(0x0105, 1 + 3 * 4, peb2466_fw_parse_axtable),
+ /* AR TABLE */
+ PEB2466_TAG_DEF_LNG_MIN(0x0106, 1 + 3 * 4, peb2466_fw_parse_artable),
+};
+
+static const struct peb2466_fw_tag_def *peb2466_fw_get_tag_def(u16 tag)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(peb2466_fw_tag_defs); i++) {
+ if (peb2466_fw_tag_defs[i].tag == tag)
+ return &peb2466_fw_tag_defs[i];
+ }
+ return NULL;
+}
+
+static int peb2466_fw_parse(struct snd_soc_component *component,
+ const u8 *data, size_t size)
+{
+ const struct peb2466_fw_tag_def *tag_def;
+ size_t left;
+ const u8 *buf;
+ u16 val16;
+ u16 tag;
+ u32 lng;
+ int ret;
+
+ /*
+ * Coefficients firmware binary structure (16bits and 32bits are
+ * big-endian values).
+ *
+ * @0, 16bits: Magic (0x2466)
+ * @2, 16bits: Version (0x0100 for version 1.0)
+ * @4, 2+4+N bytes: TLV block
+ * @4+(2+4+N) bytes: Next TLV block
+ * ...
+ *
+ * Detail of a TLV block:
+ * @0, 16bits: Tag
+ * @2, 32bits: Lng
+ * @6, lng bytes: Data
+ *
+ * The detail the Data for a given TLV Tag is provided in the related
+ * parser.
+ */
+
+ left = size;
+ buf = data;
+
+ if (left < 4) {
+ dev_err(component->dev, "fw size %zu, exp at least 4\n", left);
+ return -EINVAL;
+ }
+
+ /* Check magic */
+ val16 = get_unaligned_be16(buf);
+ if (val16 != 0x2466) {
+ dev_err(component->dev, "fw magic 0x%04x exp 0x2466\n", val16);
+ return -EINVAL;
+ }
+ buf += 2;
+ left -= 2;
+
+ /* Check version */
+ val16 = get_unaligned_be16(buf);
+ if (val16 != 0x0100) {
+ dev_err(component->dev, "fw magic 0x%04x exp 0x0100\n", val16);
+ return -EINVAL;
+ }
+ buf += 2;
+ left -= 2;
+
+ while (left) {
+ if (left < 6) {
+ dev_err(component->dev, "fw %td/%zu left %zu, exp at least 6\n",
+ buf - data, size, left);
+ return -EINVAL;
+ }
+ /* Check tag and lng */
+ tag = get_unaligned_be16(buf);
+ lng = get_unaligned_be32(buf + 2);
+ tag_def = peb2466_fw_get_tag_def(tag);
+ if (!tag_def) {
+ dev_err(component->dev, "fw %td/%zu tag 0x%04x unknown\n",
+ buf - data, size, tag);
+ return -EINVAL;
+ }
+ if (lng < tag_def->lng_min || lng > tag_def->lng_max) {
+ dev_err(component->dev, "fw %td/%zu tag 0x%04x lng %u, exp [%u;%u]\n",
+ buf - data, size, tag, lng, tag_def->lng_min, tag_def->lng_max);
+ return -EINVAL;
+ }
+ buf += 6;
+ left -= 6;
+ if (left < lng) {
+ dev_err(component->dev, "fw %td/%zu tag 0x%04x lng %u, left %zu\n",
+ buf - data, size, tag, lng, left);
+ return -EINVAL;
+ }
+
+ /* TLV block is valid -> parse the data part */
+ ret = tag_def->parse(component, tag, lng, buf);
+ if (ret) {
+ dev_err(component->dev, "fw %td/%zu tag 0x%04x lng %u parse failed\n",
+ buf - data, size, tag, lng);
+ return ret;
+ }
+
+ buf += lng;
+ left -= lng;
+ }
+ return 0;
+}
+
+static int peb2466_load_coeffs(struct snd_soc_component *component, const char *fw_name)
+{
+ const struct firmware *fw;
+ int ret;
+
+ ret = request_firmware(&fw, fw_name, component->dev);
+ if (ret)
+ return ret;
+
+ ret = peb2466_fw_parse(component, fw->data, fw->size);
+ release_firmware(fw);
+
+ return ret;
+}
+
+static int peb2466_component_probe(struct snd_soc_component *component)
+{
+ struct peb2466 *peb2466 = snd_soc_component_get_drvdata(component);
+ const char *firmware_name;
+ int ret;
+
+ /* reset peb2466 audio part */
+ ret = peb2466_reset_audio(peb2466);
+ if (ret)
+ return ret;
+
+ ret = of_property_read_string(peb2466->spi->dev.of_node,
+ "firmware-name", &firmware_name);
+ if (ret)
+ return (ret == -EINVAL) ? 0 : ret;
+
+ return peb2466_load_coeffs(component, firmware_name);
+}
+
+static const struct snd_soc_component_driver peb2466_component_driver = {
+ .probe = peb2466_component_probe,
+ .controls = peb2466_controls,
+ .num_controls = ARRAY_SIZE(peb2466_controls),
+ .dapm_widgets = peb2466_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(peb2466_dapm_widgets),
+ .dapm_routes = peb2466_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(peb2466_dapm_routes),
+ .endianness = 1,
+};
+
+/*
+ * The mapping used for the relationship between the gpio offset and the
+ * physical pin is the following:
+ *
+ * offset pin
+ * 0 SI1_0
+ * 1 SI1_1
+ * 2 SI2_0
+ * 3 SI2_1
+ * 4 SI3_0
+ * 5 SI3_1
+ * 6 SI4_0
+ * 7 SI4_1
+ * 8 SO1_0
+ * 9 SO1_1
+ * 10 SO2_0
+ * 11 SO2_1
+ * 12 SO3_0
+ * 13 SO3_1
+ * 14 SO4_0
+ * 15 SO4_1
+ * 16 SB1_0
+ * 17 SB1_1
+ * 18 SB2_0
+ * 19 SB2_1
+ * 20 SB3_0
+ * 21 SB3_1
+ * 22 SB4_0
+ * 23 SB4_1
+ * 24 SB1_2
+ * 25 SB2_2
+ * 26 SB3_2
+ * 27 SB4_2
+ */
+
+static int peb2466_chip_gpio_offset_to_data_regmask(unsigned int offset,
+ unsigned int *xr_reg,
+ unsigned int *mask)
+{
+ if (offset < 16) {
+ /*
+ * SIx_{0,1} and SOx_{0,1}
+ * Read accesses read SIx_{0,1} values
+ * Write accesses write SOx_{0,1} values
+ */
+ *xr_reg = PEB2466_XR0;
+ *mask = (1 << (offset % 8));
+ return 0;
+ }
+ if (offset < 24) {
+ /* SBx_{0,1} */
+ *xr_reg = PEB2466_XR1;
+ *mask = (1 << (offset - 16));
+ return 0;
+ }
+ if (offset < 28) {
+ /* SBx_2 */
+ *xr_reg = PEB2466_XR3;
+ *mask = (1 << (offset - 24 + 4));
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int peb2466_chip_gpio_offset_to_dir_regmask(unsigned int offset,
+ unsigned int *xr_reg,
+ unsigned int *mask)
+{
+ if (offset < 16) {
+ /* Direction cannot be changed for these GPIOs */
+ return -EINVAL;
+ }
+ if (offset < 24) {
+ *xr_reg = PEB2466_XR2;
+ *mask = (1 << (offset - 16));
+ return 0;
+ }
+ if (offset < 28) {
+ *xr_reg = PEB2466_XR3;
+ *mask = (1 << (offset - 24));
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static unsigned int *peb2466_chip_gpio_get_cache(struct peb2466 *peb2466,
+ unsigned int xr_reg)
+{
+ unsigned int *cache;
+
+ switch (xr_reg) {
+ case PEB2466_XR0:
+ cache = &peb2466->gpio.cache.xr0;
+ break;
+ case PEB2466_XR1:
+ cache = &peb2466->gpio.cache.xr1;
+ break;
+ case PEB2466_XR2:
+ cache = &peb2466->gpio.cache.xr2;
+ break;
+ case PEB2466_XR3:
+ cache = &peb2466->gpio.cache.xr3;
+ break;
+ default:
+ cache = NULL;
+ break;
+ }
+ return cache;
+}
+
+static int peb2466_chip_gpio_update_bits(struct peb2466 *peb2466, unsigned int xr_reg,
+ unsigned int mask, unsigned int val)
+{
+ unsigned int tmp;
+ unsigned int *cache;
+ int ret;
+
+ /*
+ * Read and write accesses use different peb2466 internal signals (input
+ * signals on reads and output signals on writes). regmap_update_bits
+ * cannot be used to read/modify/write the value.
+ * So, a specific cache value is used.
+ */
+
+ mutex_lock(&peb2466->gpio.lock);
+
+ cache = peb2466_chip_gpio_get_cache(peb2466, xr_reg);
+ if (!cache) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ tmp = *cache;
+ tmp &= ~mask;
+ tmp |= val;
+
+ ret = regmap_write(peb2466->regmap, xr_reg, tmp);
+ if (ret)
+ goto end;
+
+ *cache = tmp;
+ ret = 0;
+
+end:
+ mutex_unlock(&peb2466->gpio.lock);
+ return ret;
+}
+
+static void peb2466_chip_gpio_set(struct gpio_chip *c, unsigned int offset, int val)
+{
+ struct peb2466 *peb2466 = gpiochip_get_data(c);
+ unsigned int xr_reg;
+ unsigned int mask;
+ int ret;
+
+ if (offset < 8) {
+ /*
+ * SIx_{0,1} signals cannot be set and writing the related
+ * register will change the SOx_{0,1} signals
+ */
+ dev_warn(&peb2466->spi->dev, "cannot set gpio %d (read-only)\n",
+ offset);
+ return;
+ }
+
+ ret = peb2466_chip_gpio_offset_to_data_regmask(offset, &xr_reg, &mask);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "cannot set gpio %d (%d)\n",
+ offset, ret);
+ return;
+ }
+
+ ret = peb2466_chip_gpio_update_bits(peb2466, xr_reg, mask, val ? mask : 0);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "set gpio %d (0x%x, 0x%x) failed (%d)\n",
+ offset, xr_reg, mask, ret);
+ }
+}
+
+static int peb2466_chip_gpio_get(struct gpio_chip *c, unsigned int offset)
+{
+ struct peb2466 *peb2466 = gpiochip_get_data(c);
+ bool use_cache = false;
+ unsigned int *cache;
+ unsigned int xr_reg;
+ unsigned int mask;
+ unsigned int val;
+ int ret;
+
+ if (offset >= 8 && offset < 16) {
+ /*
+ * SOx_{0,1} signals cannot be read. Reading the related
+ * register will read the SIx_{0,1} signals.
+ * Use the cache to get value;
+ */
+ use_cache = true;
+ }
+
+ ret = peb2466_chip_gpio_offset_to_data_regmask(offset, &xr_reg, &mask);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "cannot get gpio %d (%d)\n",
+ offset, ret);
+ return -EINVAL;
+ }
+
+ if (use_cache) {
+ cache = peb2466_chip_gpio_get_cache(peb2466, xr_reg);
+ if (!cache)
+ return -EINVAL;
+ val = *cache;
+ } else {
+ ret = regmap_read(peb2466->regmap, xr_reg, &val);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "get gpio %d (0x%x, 0x%x) failed (%d)\n",
+ offset, xr_reg, mask, ret);
+ return ret;
+ }
+ }
+
+ return !!(val & mask);
+}
+
+static int peb2466_chip_get_direction(struct gpio_chip *c, unsigned int offset)
+{
+ struct peb2466 *peb2466 = gpiochip_get_data(c);
+ unsigned int xr_reg;
+ unsigned int mask;
+ unsigned int val;
+ int ret;
+
+ if (offset < 8) {
+ /* SIx_{0,1} */
+ return GPIO_LINE_DIRECTION_IN;
+ }
+ if (offset < 16) {
+ /* SOx_{0,1} */
+ return GPIO_LINE_DIRECTION_OUT;
+ }
+
+ ret = peb2466_chip_gpio_offset_to_dir_regmask(offset, &xr_reg, &mask);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "cannot get gpio %d direction (%d)\n",
+ offset, ret);
+ return ret;
+ }
+
+ ret = regmap_read(peb2466->regmap, xr_reg, &val);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "get dir gpio %d (0x%x, 0x%x) failed (%d)\n",
+ offset, xr_reg, mask, ret);
+ return ret;
+ }
+
+ return val & mask ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
+}
+
+static int peb2466_chip_direction_input(struct gpio_chip *c, unsigned int offset)
+{
+ struct peb2466 *peb2466 = gpiochip_get_data(c);
+ unsigned int xr_reg;
+ unsigned int mask;
+ int ret;
+
+ if (offset < 8) {
+ /* SIx_{0,1} */
+ return 0;
+ }
+ if (offset < 16) {
+ /* SOx_{0,1} */
+ return -EINVAL;
+ };
+
+ ret = peb2466_chip_gpio_offset_to_dir_regmask(offset, &xr_reg, &mask);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "cannot set gpio %d direction (%d)\n",
+ offset, ret);
+ return ret;
+ }
+
+ ret = peb2466_chip_gpio_update_bits(peb2466, xr_reg, mask, 0);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "Set dir in gpio %d (0x%x, 0x%x) failed (%d)\n",
+ offset, xr_reg, mask, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int peb2466_chip_direction_output(struct gpio_chip *c, unsigned int offset, int val)
+{
+ struct peb2466 *peb2466 = gpiochip_get_data(c);
+ unsigned int xr_reg;
+ unsigned int mask;
+ int ret;
+
+ if (offset < 8) {
+ /* SIx_{0,1} */
+ return -EINVAL;
+ }
+
+ peb2466_chip_gpio_set(c, offset, val);
+
+ if (offset < 16) {
+ /* SOx_{0,1} */
+ return 0;
+ };
+
+ ret = peb2466_chip_gpio_offset_to_dir_regmask(offset, &xr_reg, &mask);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "cannot set gpio %d direction (%d)\n",
+ offset, ret);
+ return ret;
+ }
+
+ ret = peb2466_chip_gpio_update_bits(peb2466, xr_reg, mask, mask);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "Set dir in gpio %d (0x%x, 0x%x) failed (%d)\n",
+ offset, xr_reg, mask, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int peb2466_reset_gpio(struct peb2466 *peb2466)
+{
+ static const struct reg_sequence reg_reset[] = {
+ /* Output pins at 0, input/output pins as input */
+ { .reg = PEB2466_XR0, .def = 0 },
+ { .reg = PEB2466_XR1, .def = 0 },
+ { .reg = PEB2466_XR2, .def = 0 },
+ { .reg = PEB2466_XR3, .def = 0 },
+ };
+
+ peb2466->gpio.cache.xr0 = 0;
+ peb2466->gpio.cache.xr1 = 0;
+ peb2466->gpio.cache.xr2 = 0;
+ peb2466->gpio.cache.xr3 = 0;
+
+ return regmap_multi_reg_write(peb2466->regmap, reg_reset, ARRAY_SIZE(reg_reset));
+}
+
+static int peb2466_gpio_init(struct peb2466 *peb2466)
+{
+ int ret;
+
+ mutex_init(&peb2466->gpio.lock);
+
+ ret = peb2466_reset_gpio(peb2466);
+ if (ret)
+ return ret;
+
+ peb2466->gpio.gpio_chip.owner = THIS_MODULE;
+ peb2466->gpio.gpio_chip.label = dev_name(&peb2466->spi->dev);
+ peb2466->gpio.gpio_chip.parent = &peb2466->spi->dev;
+ peb2466->gpio.gpio_chip.base = -1;
+ peb2466->gpio.gpio_chip.ngpio = 28;
+ peb2466->gpio.gpio_chip.get_direction = peb2466_chip_get_direction;
+ peb2466->gpio.gpio_chip.direction_input = peb2466_chip_direction_input;
+ peb2466->gpio.gpio_chip.direction_output = peb2466_chip_direction_output;
+ peb2466->gpio.gpio_chip.get = peb2466_chip_gpio_get;
+ peb2466->gpio.gpio_chip.set = peb2466_chip_gpio_set;
+ peb2466->gpio.gpio_chip.can_sleep = true;
+
+ return devm_gpiochip_add_data(&peb2466->spi->dev, &peb2466->gpio.gpio_chip,
+ peb2466);
+}
+
+static int peb2466_spi_probe(struct spi_device *spi)
+{
+ struct peb2466 *peb2466;
+ unsigned long mclk_rate;
+ int ret;
+ u8 xr5;
+
+ spi->bits_per_word = 8;
+ ret = spi_setup(spi);
+ if (ret < 0)
+ return ret;
+
+ peb2466 = devm_kzalloc(&spi->dev, sizeof(*peb2466), GFP_KERNEL);
+ if (!peb2466)
+ return -ENOMEM;
+
+ peb2466->spi = spi;
+
+ peb2466->regmap = devm_regmap_init(&peb2466->spi->dev, NULL, peb2466,
+ &peb2466_regmap_config);
+ if (IS_ERR(peb2466->regmap))
+ return PTR_ERR(peb2466->regmap);
+
+ peb2466->reset_gpio = devm_gpiod_get_optional(&peb2466->spi->dev,
+ "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(peb2466->reset_gpio))
+ return PTR_ERR(peb2466->reset_gpio);
+
+ peb2466->mclk = devm_clk_get(&peb2466->spi->dev, "mclk");
+ if (IS_ERR(peb2466->mclk))
+ return PTR_ERR(peb2466->mclk);
+ ret = clk_prepare_enable(peb2466->mclk);
+ if (ret)
+ return ret;
+
+ if (peb2466->reset_gpio) {
+ gpiod_set_value_cansleep(peb2466->reset_gpio, 1);
+ udelay(4);
+ gpiod_set_value_cansleep(peb2466->reset_gpio, 0);
+ udelay(4);
+ }
+
+ spi_set_drvdata(spi, peb2466);
+
+ mclk_rate = clk_get_rate(peb2466->mclk);
+ switch (mclk_rate) {
+ case 1536000:
+ xr5 = PEB2466_XR5_MCLK_1536;
+ break;
+ case 2048000:
+ xr5 = PEB2466_XR5_MCLK_2048;
+ break;
+ case 4096000:
+ xr5 = PEB2466_XR5_MCLK_4096;
+ break;
+ case 8192000:
+ xr5 = PEB2466_XR5_MCLK_8192;
+ break;
+ default:
+ dev_err(&peb2466->spi->dev, "Unsupported clock rate %lu\n",
+ mclk_rate);
+ ret = -EINVAL;
+ goto failed;
+ }
+ ret = regmap_write(peb2466->regmap, PEB2466_XR5, xr5);
+ if (ret) {
+ dev_err(&peb2466->spi->dev, "Setting MCLK failed (%d)\n", ret);
+ goto failed;
+ }
+
+ ret = devm_snd_soc_register_component(&spi->dev, &peb2466_component_driver,
+ &peb2466_dai_driver, 1);
+ if (ret)
+ goto failed;
+
+ if (IS_ENABLED(CONFIG_GPIOLIB)) {
+ ret = peb2466_gpio_init(peb2466);
+ if (ret)
+ goto failed;
+ }
+
+ return 0;
+
+failed:
+ clk_disable_unprepare(peb2466->mclk);
+ return ret;
+}
+
+static void peb2466_spi_remove(struct spi_device *spi)
+{
+ struct peb2466 *peb2466 = spi_get_drvdata(spi);
+
+ clk_disable_unprepare(peb2466->mclk);
+}
+
+static const struct of_device_id peb2466_of_match[] = {
+ { .compatible = "infineon,peb2466", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, peb2466_of_match);
+
+static const struct spi_device_id peb2466_id_table[] = {
+ { "peb2466", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, peb2466_id_table);
+
+static struct spi_driver peb2466_spi_driver = {
+ .driver = {
+ .name = "peb2466",
+ .of_match_table = peb2466_of_match,
+ },
+ .id_table = peb2466_id_table,
+ .probe = peb2466_spi_probe,
+ .remove = peb2466_spi_remove,
+};
+
+module_spi_driver(peb2466_spi_driver);
+
+MODULE_AUTHOR("Herve Codina <herve.codina@bootlin.com>");
+MODULE_DESCRIPTION("PEB2466 ALSA SoC driver");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-starfive.git / commitdiff