max98373.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpigen.h>
#include <acpi/acpi_device.h>
#include <acpi/acpi_soundwire.h>
#include <device/device.h>
#include <device/path.h>
#include <device/soundwire.h>
#include <mipi/ids.h>
#include <stdio.h>
 
#include "chip.h"
 
static struct soundwire_address max98373_address = {
        .version = SOUNDWIRE_VERSION_1_1,
        .manufacturer_id = MIPI_MFG_ID_MAXIM,
        .part_id = MIPI_DEV_ID_MAXIM_MAX98373,
        .class = MIPI_CLASS_NONE
};
 
static struct soundwire_slave max98373_slave = {
        .wake_up_unavailable = false,
        .test_mode_supported = false,
        .clock_stop_mode1_supported = true,
        .simplified_clockstopprepare_sm_supported = true,
        .clockstopprepare_hard_reset_behavior = false,
        .highPHY_capable = false,
        .paging_supported = false,
        .bank_delay_supported = false,
        .port15_read_behavior = false,
        .source_port_list = SOUNDWIRE_PORT(3),
        .sink_port_list = SOUNDWIRE_PORT(1),
};
 
static struct soundwire_audio_mode max98373_audio_mode = {
        /* Bus frequency must be 1/2/4/8 divider of supported input frequencies. */
        .bus_frequency_configs_count = 27,
        .bus_frequency_configs = {
                7680 * KHz, 3840 * KHz, 1920 * KHz, 960 * KHz,   /* 7.68 MHz */
                8400 * KHz, 4200 * KHz, 2100 * KHz, 1050 * KHz,  /* 8.4 MHz */
                9600 * KHz, 4800 * KHz, 2400 * KHz, 1200 * KHz,  /* 9.6 MHz */
                11289600, 5644800, 2822400, 1411200,             /* 11.2896 MHz */
                12000 * KHz, 6000 * KHz, 3000 * KHz, 1500 * KHz, /* 12 MHz */
                12288 * KHz, 6144 * KHz, 3072 * KHz, 1536 * KHz, /* 12.288 MHz */
                13000 * KHz, 6500 * KHz, 3250 * KHz              /* 13 MHz (no /8) */
        },
        /* Support 16 KHz to 96 KHz sampling frequency */
        .sampling_frequency_configs_count = 8,
        .sampling_frequency_configs = {
                16 * KHz,
                22.05 * KHz,
                24 * KHz,
                32 * KHz,
                44.1 * KHz,
                48 * KHz,
                88.2 * KHz,
                96 * KHz,
        },
        .prepare_channel_behavior = CHANNEL_PREPARE_ANY_FREQUENCY
};
 
static struct soundwire_dpn max98373_dp1 = {
        .port_wordlength_configs_count = 1,
        .port_wordlength_configs = { 32 },
        .data_port_type = FULL_DATA_PORT,
        .max_grouping_supported = BLOCK_GROUP_COUNT_1,
        .simplified_channelprepare_sm = false,
        .imp_def_dpn_interrupts_supported = 0,
        .min_channel_number = 1,
        .max_channel_number = 2,
        .modes_supported = MODE_ISOCHRONOUS | MODE_TX_CONTROLLED |
                           MODE_RX_CONTROLLED | MODE_FULL_ASYNCHRONOUS,
        .block_packing_mode = true,
        .port_audio_mode_count = 1,
        .port_audio_mode_list = { 0 }
};
 
static struct soundwire_dpn max98373_dp3 = {
        .port_wordlength_configs_count = 1,
        .port_wordlength_configs = { 16 },
        .data_port_type = FULL_DATA_PORT,
        .max_grouping_supported = BLOCK_GROUP_COUNT_1,
        .simplified_channelprepare_sm = false,
        .imp_def_dpn_interrupts_supported = 0,
        .min_channel_number = 1,
        .max_channel_number = 2,
        .modes_supported = MODE_ISOCHRONOUS | MODE_TX_CONTROLLED |
                           MODE_RX_CONTROLLED | MODE_FULL_ASYNCHRONOUS,
        .block_packing_mode = true,
        .port_audio_mode_count = 1,
        .port_audio_mode_list = { 0 }
};
 
static const struct soundwire_codec max98373_codec = {
        .slave = &max98373_slave,
        .audio_mode = { &max98373_audio_mode },
        .dpn = {
                {
                        /* Data Input for Speaker Path */
                        .port = 1,
                        .sink = &max98373_dp1
                },
                {
                        /* Data Output for I/V Sense ADC Path */
                        .port = 3,
                        .source = &max98373_dp3,
                }
        }
};
 
static void soundwire_max98373_fill_ssdt(const struct device *dev)
{
        struct drivers_soundwire_max98373_config *config = dev->chip_info;
        const char *scope = acpi_device_scope(dev);
        struct acpi_dp *dsd;
 
        if (!scope)
                return;
 
        acpigen_write_scope(scope);
        acpigen_write_device(acpi_device_name(dev));
 
        /* Set codec address IDs. */
        max98373_address.link_id = dev->path.generic.id;
        max98373_address.unique_id = dev->path.generic.subid;
 
        acpigen_write_ADR_soundwire_device(&max98373_address);
        acpigen_write_name_string("_DDN", config->desc ? : dev->chip_ops->name);
        acpigen_write_STA(acpi_device_status(dev));
 
        dsd = acpi_dp_new_table("_DSD");
        soundwire_gen_codec(dsd, &max98373_codec, NULL);
        acpi_dp_write(dsd);
 
        acpigen_pop_len(); /* Device */
        acpigen_pop_len(); /* Scope */
}
 
static const char *soundwire_max98373_acpi_name(const struct device *dev)
{
        struct drivers_soundwire_max98373_config *config = dev->chip_info;
        static char name[5];
 
        if (config->name)
                return config->name;
        snprintf(name, sizeof(name), "SW%1X%1X", dev->path.generic.id, dev->path.generic.subid);
        return name;
}
 
static struct device_operations soundwire_max98373_ops = {
        .read_resources         = noop_read_resources,
        .set_resources          = noop_set_resources,
        .acpi_name              = soundwire_max98373_acpi_name,
        .acpi_fill_ssdt         = soundwire_max98373_fill_ssdt,
};
 
static void soundwire_max98373_enable(struct device *dev)
{
        dev->ops = &soundwire_max98373_ops;
}
 
struct chip_operations drivers_soundwire_max98373_ops = {
        CHIP_NAME("Maxim MAX98373 SoundWire Codec")
        .enable_dev = soundwire_max98373_enable
};