// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
 *
 * Copyright (C) 2010 Texas Instruments, Inc
 *
 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
 */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/mfd/davinci_voicecodec.h>
#include <linux/spi/spi.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
        SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
        SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
};

static int cq93vc_mute(struct snd_soc_dai *dai, int mute, int direction)
{
        struct snd_soc_component *component = dai->component;
        u8 reg;

        if (mute)
                reg = DAVINCI_VC_REG09_MUTE;
        else
                reg = 0;

        snd_soc_component_update_bits(component, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
                            reg);

        return 0;
}

static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
                                 int clk_id, unsigned int freq, int dir)
{
        switch (freq) {
        case 22579200:
        case 27000000:
        case 33868800:
                return 0;
        }

        return -EINVAL;
}

static int cq93vc_set_bias_level(struct snd_soc_component *component,
                                enum snd_soc_bias_level level)
{
        switch (level) {
        case SND_SOC_BIAS_ON:
                snd_soc_component_write(component, DAVINCI_VC_REG12,
                             DAVINCI_VC_REG12_POWER_ALL_ON);
                break;
        case SND_SOC_BIAS_PREPARE:
                break;
        case SND_SOC_BIAS_STANDBY:
                snd_soc_component_write(component, DAVINCI_VC_REG12,
                             DAVINCI_VC_REG12_POWER_ALL_OFF);
                break;
        case SND_SOC_BIAS_OFF:
                /* force all power off */
                snd_soc_component_write(component, DAVINCI_VC_REG12,
                             DAVINCI_VC_REG12_POWER_ALL_OFF);
                break;
        }

        return 0;
}

#define CQ93VC_RATES    (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
#define CQ93VC_FORMATS  (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)

static const struct snd_soc_dai_ops cq93vc_dai_ops = {
        .mute_stream    = cq93vc_mute,
        .set_sysclk     = cq93vc_set_dai_sysclk,
        .no_capture_mute = 1,
};

static struct snd_soc_dai_driver cq93vc_dai = {
        .name = "cq93vc-hifi",
        .playback = {
                .stream_name = "Playback",
                .channels_min = 1,
                .channels_max = 2,
                .rates = CQ93VC_RATES,
                .formats = CQ93VC_FORMATS,},
        .capture = {
                .stream_name = "Capture",
                .channels_min = 1,
                .channels_max = 2,
                .rates = CQ93VC_RATES,
                .formats = CQ93VC_FORMATS,},
        .ops = &cq93vc_dai_ops,
};

static int cq93vc_probe(struct snd_soc_component *component)
{
        struct davinci_vc *davinci_vc = component->dev->platform_data;

        snd_soc_component_init_regmap(component, davinci_vc->regmap);

        return 0;
}

static const struct snd_soc_component_driver soc_component_dev_cq93vc = {
        .set_bias_level         = cq93vc_set_bias_level,
        .probe                  = cq93vc_probe,
        .controls               = cq93vc_snd_controls,
        .num_controls           = ARRAY_SIZE(cq93vc_snd_controls),
        .idle_bias_on           = 1,
        .use_pmdown_time        = 1,
        .endianness             = 1,
};

static int cq93vc_platform_probe(struct platform_device *pdev)
{
        return devm_snd_soc_register_component(&pdev->dev,
                        &soc_component_dev_cq93vc, &cq93vc_dai, 1);
}

static struct platform_driver cq93vc_codec_driver = {
        .driver = {
                        .name = "cq93vc-codec",
        },

        .probe = cq93vc_platform_probe,
};

module_platform_driver(cq93vc_codec_driver);

MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
MODULE_AUTHOR("Miguel Aguilar");
MODULE_LICENSE("GPL");