/* SPDX-License-Identifier: GPL-2.0 */
/*
 * CS42L43 CODEC driver internal data
 *
 * Copyright (C) 2022-2023 Cirrus Logic, Inc. and
 *                         Cirrus Logic International Semiconductor Ltd.
 */

#ifndef CS42L43_ASOC_INT_H
#define CS42L43_ASOC_INT_H

#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <sound/pcm.h>

#define CS42L43_INTERNAL_SYSCLK         24576000
#define CS42L43_DEFAULT_SLOTS           0x3F

#define CS42L43_PLL_TIMEOUT_MS          200
#define CS42L43_SPK_TIMEOUT_MS          100
#define CS42L43_HP_TIMEOUT_MS           2000
#define CS42L43_LOAD_TIMEOUT_MS         1000

#define CS42L43_HP_ILIMIT_BACKOFF_MS    1000
#define CS42L43_HP_ILIMIT_DECAY_MS      300
#define CS42L43_HP_ILIMIT_MAX_COUNT     4

#define CS42L43_ASP_MAX_CHANNELS        6
#define CS42L43_N_EQ_COEFFS             15

#define CS42L43_N_BUTTONS       6

struct clk;
struct device;

struct snd_soc_component;
struct snd_soc_jack;

struct cs42l43;

struct cs42l43_codec {
        struct device *dev;
        struct cs42l43 *core;
        struct snd_soc_component *component;
        struct irq_domain *dom;
        unsigned int shutter_irqs[4];

        struct clk *mclk;

        int n_slots;
        int slot_width;
        int tx_slots[CS42L43_ASP_MAX_CHANNELS];
        int rx_slots[CS42L43_ASP_MAX_CHANNELS];
        struct snd_pcm_hw_constraint_list constraint;

        u32 eq_coeffs[CS42L43_N_EQ_COEFFS];

        unsigned int refclk_src;
        unsigned int refclk_freq;
        struct completion pll_ready;

        unsigned int decim_cache[4];
        unsigned int adc_ena;
        unsigned int hp_ena;

        struct completion hp_startup;
        struct completion hp_shutdown;
        struct completion spkr_shutdown;
        struct completion spkl_shutdown;
        struct completion spkr_startup;
        struct completion spkl_startup;
        // Lock to ensure speaker VU updates don't clash
        struct mutex spk_vu_lock;

        // Lock for all jack detect operations
        struct mutex jack_lock;
        struct snd_soc_jack *jack_hp;

        bool use_ring_sense;
        unsigned int tip_debounce_ms;
        unsigned int tip_fall_db_ms;
        unsigned int tip_rise_db_ms;
        unsigned int bias_low;
        unsigned int bias_sense_ua;
        unsigned int bias_ramp_ms;
        unsigned int detect_us;
        unsigned int buttons[CS42L43_N_BUTTONS];

        struct delayed_work tip_sense_work;
        struct delayed_work bias_sense_timeout;
        struct completion type_detect;
        struct completion load_detect;

        bool load_detect_running;
        bool button_detect_running;
        bool jack_present;
        int jack_override;
        bool suspend_jack_debounce;

        struct delayed_work hp_ilimit_clear_work;
        bool hp_ilimited;
        int hp_ilimit_count;

        struct snd_kcontrol *kctl[5];
};

#if IS_REACHABLE(CONFIG_SND_SOC_CS42L43_SDW)

int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
                               struct snd_pcm_hw_params *params,
                               struct snd_soc_dai *dai);
int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
                                  struct snd_soc_dai *dai);
int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction);

#else

static inline int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
                                             struct snd_pcm_hw_params *params,
                                             struct snd_soc_dai *dai)
{
        return -EINVAL;
}

#define cs42l43_sdw_remove_peripheral NULL
#define cs42l43_sdw_set_stream NULL

#endif

int cs42l43_set_jack(struct snd_soc_component *component,
                     struct snd_soc_jack *jack, void *d);
void cs42l43_bias_sense_timeout(struct work_struct *work);
void cs42l43_clear_jack(struct cs42l43_codec *priv);
void cs42l43_tip_sense_work(struct work_struct *work);
irqreturn_t cs42l43_bias_detect_clamp(int irq, void *data);
irqreturn_t cs42l43_button_press(int irq, void *data);
irqreturn_t cs42l43_button_release(int irq, void *data);
irqreturn_t cs42l43_tip_sense(int irq, void *data);
int cs42l43_jack_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
int cs42l43_jack_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);

extern const struct soc_enum cs42l43_jack_enum;

#endif /* CS42L43_ASOC_INT_H */