// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 1999 by Uros Bizjak <[email protected]> * Takashi Iwai <[email protected]> * * SB16ASP/AWE32 CSP control * * CSP microcode loader: * alsa-tools/sb16_csp/ */ #include <linux/delay.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/module.h> #include <sound/core.h> #include <sound/control.h> #include <sound/info.h> #include <sound/sb16_csp.h> #include <sound/initval.h> MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_FIRMWARE(…) …; MODULE_FIRMWARE(…) …; MODULE_FIRMWARE(…) …; MODULE_FIRMWARE(…) …; MODULE_FIRMWARE(…) …; #ifdef SNDRV_LITTLE_ENDIAN #define CSP_HDR_VALUE(a,b,c,d) … #else #define CSP_HDR_VALUE … #endif #define RIFF_HEADER … #define CSP__HEADER … #define LIST_HEADER … #define FUNC_HEADER … #define CODE_HEADER … #define INIT_HEADER … #define MAIN_HEADER … /* * RIFF data format */ struct riff_header { … }; struct desc_header { … }; /* * prototypes */ static void snd_sb_csp_free(struct snd_hwdep *hw); static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file); static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg); static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file); static int csp_detect(struct snd_sb *chip, int *version); static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val); static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val); static int read_register(struct snd_sb *chip, unsigned char reg); static int set_mode_register(struct snd_sb *chip, unsigned char mode); static int get_version(struct snd_sb *chip); static int snd_sb_csp_riff_load(struct snd_sb_csp * p, struct snd_sb_csp_microcode __user * code); static int snd_sb_csp_unload(struct snd_sb_csp * p); static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags); static int snd_sb_csp_autoload(struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode); static int snd_sb_csp_check_version(struct snd_sb_csp * p); static int snd_sb_csp_use(struct snd_sb_csp * p); static int snd_sb_csp_unuse(struct snd_sb_csp * p); static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels); static int snd_sb_csp_stop(struct snd_sb_csp * p); static int snd_sb_csp_pause(struct snd_sb_csp * p); static int snd_sb_csp_restart(struct snd_sb_csp * p); static int snd_sb_qsound_build(struct snd_sb_csp * p); static void snd_sb_qsound_destroy(struct snd_sb_csp * p); static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p); static int init_proc_entry(struct snd_sb_csp * p, int device); static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer); /* * Detect CSP chip and create a new instance */ int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep) { … } /* * free_private for hwdep instance */ static void snd_sb_csp_free(struct snd_hwdep *hwdep) { … } /* ------------------------------ */ /* * open the device exclusively */ static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file) { … } /* * ioctl for hwdep device: */ static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg) { … } /* * close the device */ static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file) { … } /* ------------------------------ */ /* * acquire device */ static int snd_sb_csp_use(struct snd_sb_csp * p) { … } /* * release device */ static int snd_sb_csp_unuse(struct snd_sb_csp * p) { … } /* * load microcode via ioctl: * code is user-space pointer */ static int snd_sb_csp_riff_load(struct snd_sb_csp * p, struct snd_sb_csp_microcode __user * mcode) { … } /* * unload CSP microcode */ static int snd_sb_csp_unload(struct snd_sb_csp * p) { … } /* * send command sequence to DSP */ static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size) { … } /* * set CSP codec parameter */ static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val) { … } /* * set CSP register */ static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val) { … } /* * read CSP register * return < 0 -> error */ static int read_register(struct snd_sb *chip, unsigned char reg) { … } /* * set CSP mode register */ static int set_mode_register(struct snd_sb *chip, unsigned char mode) { … } /* * Detect CSP * return 0 if CSP exists. */ static int csp_detect(struct snd_sb *chip, int *version) { … } /* * get CSP version number */ static int get_version(struct snd_sb *chip) { … } /* * check if the CSP version is valid */ static int snd_sb_csp_check_version(struct snd_sb_csp * p) { … } /* * download microcode to CSP (microcode should have one "main" block). */ static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags) { … } static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags) { … } static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags) { … } /* * autoload hardware codec if necessary * return 0 if CSP is loaded and ready to run (p->running != 0) */ static int snd_sb_csp_autoload(struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode) { … } /* * start CSP */ static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels) { … } /* * stop CSP */ static int snd_sb_csp_stop(struct snd_sb_csp * p) { … } /* * pause CSP codec and hold DMA transfer */ static int snd_sb_csp_pause(struct snd_sb_csp * p) { … } /* * restart CSP codec and resume DMA transfer */ static int snd_sb_csp_restart(struct snd_sb_csp * p) { … } /* ------------------------------ */ /* * QSound mixer control for PCM */ #define snd_sb_qsound_switch_info … static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { … } static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static const struct snd_kcontrol_new snd_sb_qsound_switch = …; static const struct snd_kcontrol_new snd_sb_qsound_space = …; static int snd_sb_qsound_build(struct snd_sb_csp * p) { … } static void snd_sb_qsound_destroy(struct snd_sb_csp * p) { … } /* * Transfer qsound parameters to CSP, * function should be called from interrupt routine */ static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p) { … } /* ------------------------------ */ /* * proc interface */ static int init_proc_entry(struct snd_sb_csp * p, int device) { … } static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { … } /* */ EXPORT_SYMBOL(…);
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