// SPDX-License-Identifier: GPL-2.0 // // Mediatek ALSA BT SCO CVSD/MSBC Driver // // Copyright (c) 2019 MediaTek Inc. // Author: KaiChieh Chuang <[email protected]> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/sched/clock.h> #include <sound/soc.h> #define BTCVSD_SND_NAME … #define BT_CVSD_TX_NREADY … #define BT_CVSD_RX_READY … #define BT_CVSD_TX_UNDERFLOW … #define BT_CVSD_RX_OVERFLOW … #define BT_CVSD_INTERRUPT … #define BT_CVSD_CLEAR … /* TX */ #define SCO_TX_ENCODE_SIZE … /* 18 = 6 * 180 / SCO_TX_ENCODE_SIZE */ #define SCO_TX_PACKER_BUF_NUM … /* RX */ #define SCO_RX_PLC_SIZE … #define SCO_RX_PACKER_BUF_NUM … #define SCO_RX_PACKET_MASK … #define SCO_CVSD_PACKET_VALID_SIZE … #define SCO_PACKET_120 … #define SCO_PACKET_180 … #define BTCVSD_RX_PACKET_SIZE … #define BTCVSD_TX_PACKET_SIZE … #define BTCVSD_RX_BUF_SIZE … #define BTCVSD_TX_BUF_SIZE … enum bt_sco_state { … }; enum bt_sco_direct { … }; enum bt_sco_packet_len { … }; enum BT_SCO_BAND { … }; struct mtk_btcvsd_snd_hw_info { … }; struct mtk_btcvsd_snd_stream { … }; struct mtk_btcvsd_snd { … }; struct mtk_btcvsd_snd_time_buffer_info { … }; static const unsigned int btsco_packet_valid_mask[BT_SCO_CVSD_MAX][6] = …; static const unsigned int btsco_packet_info[BT_SCO_CVSD_MAX][4] = …; static const u8 table_msbc_silence[SCO_PACKET_180] = …; static void mtk_btcvsd_snd_irq_enable(struct mtk_btcvsd_snd *bt) { … } static void mtk_btcvsd_snd_irq_disable(struct mtk_btcvsd_snd *bt) { … } static void mtk_btcvsd_snd_set_state(struct mtk_btcvsd_snd *bt, struct mtk_btcvsd_snd_stream *bt_stream, int state) { … } static int mtk_btcvsd_snd_tx_init(struct mtk_btcvsd_snd *bt) { … } static int mtk_btcvsd_snd_rx_init(struct mtk_btcvsd_snd *bt) { … } static void get_tx_time_stamp(struct mtk_btcvsd_snd *bt, struct mtk_btcvsd_snd_time_buffer_info *ts) { … } static void get_rx_time_stamp(struct mtk_btcvsd_snd *bt, struct mtk_btcvsd_snd_time_buffer_info *ts) { … } static int btcvsd_bytes_to_frame(struct snd_pcm_substream *substream, int bytes) { … } static void mtk_btcvsd_snd_data_transfer(enum bt_sco_direct dir, u8 *src, u8 *dst, unsigned int blk_size, unsigned int blk_num) { … } /* write encoded mute data to bt sram */ static int btcvsd_tx_clean_buffer(struct mtk_btcvsd_snd *bt) { … } static int mtk_btcvsd_read_from_bt(struct mtk_btcvsd_snd *bt, enum bt_sco_packet_len packet_type, unsigned int packet_length, unsigned int packet_num, unsigned int blk_size, unsigned int control) { … } static int mtk_btcvsd_write_to_bt(struct mtk_btcvsd_snd *bt, enum bt_sco_packet_len packet_type, unsigned int packet_length, unsigned int packet_num, unsigned int blk_size) { … } static irqreturn_t mtk_btcvsd_snd_irq_handler(int irq_id, void *dev) { … } static int wait_for_bt_irq(struct mtk_btcvsd_snd *bt, struct mtk_btcvsd_snd_stream *bt_stream) { … } static ssize_t mtk_btcvsd_snd_read(struct mtk_btcvsd_snd *bt, struct iov_iter *buf, size_t count) { … } static ssize_t mtk_btcvsd_snd_write(struct mtk_btcvsd_snd *bt, struct iov_iter *buf, size_t count) { … } static struct mtk_btcvsd_snd_stream *get_bt_stream (struct mtk_btcvsd_snd *bt, struct snd_pcm_substream *substream) { … } /* pcm ops */ static const struct snd_pcm_hardware mtk_btcvsd_hardware = …; static int mtk_pcm_btcvsd_open(struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } static int mtk_pcm_btcvsd_close(struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } static int mtk_pcm_btcvsd_hw_params(struct snd_soc_component *component, struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { … } static int mtk_pcm_btcvsd_hw_free(struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } static int mtk_pcm_btcvsd_prepare(struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } static int mtk_pcm_btcvsd_trigger(struct snd_soc_component *component, struct snd_pcm_substream *substream, int cmd) { … } static snd_pcm_uframes_t mtk_pcm_btcvsd_pointer( struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } static int mtk_pcm_btcvsd_copy(struct snd_soc_component *component, struct snd_pcm_substream *substream, int channel, unsigned long pos, struct iov_iter *buf, unsigned long count) { … } /* kcontrol */ static const char *const btsco_band_str[] = …; static const struct soc_enum btcvsd_enum[] = …; static int btcvsd_band_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_band_set(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_loopback_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_loopback_set(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_tx_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_tx_mute_set(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_rx_irq_received_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_rx_timeout_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_rx_timestamp_get(struct snd_kcontrol *kcontrol, unsigned int __user *data, unsigned int size) { … } static int btcvsd_tx_irq_received_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_tx_timeout_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int btcvsd_tx_timestamp_get(struct snd_kcontrol *kcontrol, unsigned int __user *data, unsigned int size) { … } static const struct snd_kcontrol_new mtk_btcvsd_snd_controls[] = …; static int mtk_btcvsd_snd_component_probe(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver mtk_btcvsd_snd_platform = …; static int mtk_btcvsd_snd_probe(struct platform_device *pdev) { … } static void mtk_btcvsd_snd_remove(struct platform_device *pdev) { … } static const struct of_device_id mtk_btcvsd_snd_dt_match[] = …; MODULE_DEVICE_TABLE(of, mtk_btcvsd_snd_dt_match); static struct platform_driver mtk_btcvsd_snd_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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