The Infineon PEB2466 codec is a programmable DSP-based four channels codec with filters capabilities.

Signed-off-by: Herve Codina herve.codina@bootlin.com --- .../bindings/sound/infineon,peb2466.yaml | 91 +++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/infineon,peb2466.yaml

diff --git a/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml b/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml new file mode 100644 index 000000000000..66993d378aaf --- /dev/null +++ b/Documentation/devicetree/bindings/sound/infineon,peb2466.yaml @@ -0,0 +1,91 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/infineon,peb2466.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Infineon PEB2466 codec + +maintainers: + - Herve Codina herve.codina@bootlin.com + +description: | + The Infineon PEB2466 codec is a programmable DSP-based four channels codec + with filters capabilities. + + The time-slots used by the codec must be set and so, the properties + 'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and + 'dai-tdm-slot-rx-mask' must be present in the sound card node for sub-nodes + that involve the codec. The codec uses one 8bit time-slot per channel. + 'dai-tdm-tdm-slot-with' must be set to 8. + + The PEB2466 codec also supports 28 gpios (signaling pins). + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml + - $ref: dai-common.yaml# + +properties: + compatible: + const: infineon,peb2466 + + reg: + description: + SPI device address. + maxItems: 1 + + clocks: + items: + - description: Master clock + + clock-names: + items: + - const: mclk + + spi-max-frequency: + maximum: 8192000 + + reset-gpios: + description: + GPIO used to reset the device. + maxItems: 1 + + firmware-name: + $ref: /schemas/types.yaml#/definitions/string + description: + Filters coefficients file to load. If this property is omitted, internal + filters are disabled. + + '#sound-dai-cells': + const: 0 + + '#gpio-cells': + const: 2 + + gpio-controller: true + +required: + - compatible + - reg + - '#sound-dai-cells' + - gpio-controller + - '#gpio-cells' + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + spi { + #address-cells = <1>; + #size-cells = <0>; + audio-codec@0 { + compatible = "infineon,peb2466"; + reg = <0>; + spi-max-frequency = <8192000>; + reset-gpios = <&gpio 10 GPIO_ACTIVE_LOW>; + #sound-dai-cells = <0>; + gpio-controller; + #gpio-cells = <2>; + }; + };

The Infineon PEB2466 codec is a programmable DSP-based four channels codec with filters capabilities. It also provides 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/peb2466.c | 2071 ++++++++++++++++++++++++++++++++++++ 3 files changed, 2085 insertions(+) create mode 100644 sound/soc/codecs/peb2466.c

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 19afa0067305..80dd454695b6 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -165,6 +165,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_PCM5102A imply SND_SOC_PCM512x_I2C imply SND_SOC_PCM512x_SPI + imply SND_SOC_PEB2466 imply SND_SOC_RK3328 imply SND_SOC_RK817 imply SND_SOC_RT274 @@ -1217,6 +1218,17 @@ config SND_SOC_PCM512x_SPI select SND_SOC_PCM512x select REGMAP_SPI

+config SND_SOC_PEB2466 + tristate "Infineon PEB2466 quad PCM codec" + depends on SPI + select REGMAP_SPI + help + Enable support for the Infineon PEB2466 quad PCM codec, + also named SICOFI 4-uC. + + To compile this driver as a module, choose M here: the module + will be called snd-soc-peb2466. + config SND_SOC_RK3328 tristate "Rockchip RK3328 audio CODEC" select REGMAP_MMIO diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index a1d6de6a18f6..a48fec03703d 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -184,6 +184,7 @@ snd-soc-pcm5102a-objs := pcm5102a.o snd-soc-pcm512x-objs := pcm512x.o snd-soc-pcm512x-i2c-objs := pcm512x-i2c.o snd-soc-pcm512x-spi-objs := pcm512x-spi.o +snd-soc-peb2466-objs := peb2466.o snd-soc-rk3328-objs := rk3328_codec.o snd-soc-rk817-objs := rk817_codec.o snd-soc-rl6231-objs := rl6231.o @@ -542,6 +543,7 @@ obj-$(CONFIG_SND_SOC_PCM5102A) += snd-soc-pcm5102a.o obj-$(CONFIG_SND_SOC_PCM512x) += snd-soc-pcm512x.o obj-$(CONFIG_SND_SOC_PCM512x_I2C) += snd-soc-pcm512x-i2c.o obj-$(CONFIG_SND_SOC_PCM512x_SPI) += snd-soc-pcm512x-spi.o +obj-$(CONFIG_SND_SOC_PEB2466) += snd-soc-peb2466.o obj-$(CONFIG_SND_SOC_RK3328) += snd-soc-rk3328.o obj-$(CONFIG_SND_SOC_RK817) += snd-soc-rk817.o obj-$(CONFIG_SND_SOC_RL6231) += snd-soc-rl6231.o diff --git a/sound/soc/codecs/peb2466.c b/sound/soc/codecs/peb2466.c new file mode 100644 index 000000000000..4640b1860312 --- /dev/null +++ b/sound/soc/codecs/peb2466.c @@ -0,0 +1,2071 @@ +// 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");