diff options
Diffstat (limited to 'sound/isa/sb/sb16_csp.c')
| -rw-r--r-- | sound/isa/sb/sb16_csp.c | 1200 |
1 files changed, 1200 insertions, 0 deletions
diff --git a/sound/isa/sb/sb16_csp.c b/sound/isa/sb/sb16_csp.c new file mode 100644 index 0000000..49037d0 --- /dev/null +++ b/sound/isa/sb/sb16_csp.c @@ -0,0 +1,1200 @@ +/* + * Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si> + * Takashi Iwai <tiwai@suse.de> + * + * SB16ASP/AWE32 CSP control + * + * CSP microcode loader: + * alsa-tools/sb16_csp/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/info.h> +#include <sound/sb16_csp.h> +#include <sound/initval.h> + +MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>"); +MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE("sb16/mulaw_main.csp"); +MODULE_FIRMWARE("sb16/alaw_main.csp"); +MODULE_FIRMWARE("sb16/ima_adpcm_init.csp"); +MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp"); +MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp"); + +#ifdef SNDRV_LITTLE_ENDIAN +#define CSP_HDR_VALUE(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24)) +#else +#define CSP_HDR_VALUE(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24)) +#endif + +#define RIFF_HEADER CSP_HDR_VALUE('R', 'I', 'F', 'F') +#define CSP__HEADER CSP_HDR_VALUE('C', 'S', 'P', ' ') +#define LIST_HEADER CSP_HDR_VALUE('L', 'I', 'S', 'T') +#define FUNC_HEADER CSP_HDR_VALUE('f', 'u', 'n', 'c') +#define CODE_HEADER CSP_HDR_VALUE('c', 'o', 'd', 'e') +#define INIT_HEADER CSP_HDR_VALUE('i', 'n', 'i', 't') +#define MAIN_HEADER CSP_HDR_VALUE('m', 'a', 'i', 'n') + +/* + * RIFF data format + */ +struct riff_header { + __u32 name; + __u32 len; +}; + +struct desc_header { + struct riff_header info; + __u16 func_nr; + __u16 VOC_type; + __u16 flags_play_rec; + __u16 flags_16bit_8bit; + __u16 flags_stereo_mono; + __u16 flags_rates; +}; + +/* + * 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, int 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) +{ + struct snd_sb_csp *p; + int uninitialized_var(version); + int err; + struct snd_hwdep *hw; + + if (rhwdep) + *rhwdep = NULL; + + if (csp_detect(chip, &version)) + return -ENODEV; + + if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0) + return err; + + if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) { + snd_device_free(chip->card, hw); + return -ENOMEM; + } + p->chip = chip; + p->version = version; + + /* CSP operators */ + p->ops.csp_use = snd_sb_csp_use; + p->ops.csp_unuse = snd_sb_csp_unuse; + p->ops.csp_autoload = snd_sb_csp_autoload; + p->ops.csp_start = snd_sb_csp_start; + p->ops.csp_stop = snd_sb_csp_stop; + p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer; + + mutex_init(&p->access_mutex); + sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f)); + hw->iface = SNDRV_HWDEP_IFACE_SB16CSP; + hw->private_data = p; + hw->private_free = snd_sb_csp_free; + + /* operators - only write/ioctl */ + hw->ops.open = snd_sb_csp_open; + hw->ops.ioctl = snd_sb_csp_ioctl; + hw->ops.release = snd_sb_csp_release; + + /* create a proc entry */ + init_proc_entry(p, device); + if (rhwdep) + *rhwdep = hw; + return 0; +} + +/* + * free_private for hwdep instance + */ +static void snd_sb_csp_free(struct snd_hwdep *hwdep) +{ + int i; + struct snd_sb_csp *p = hwdep->private_data; + if (p) { + if (p->running & SNDRV_SB_CSP_ST_RUNNING) + snd_sb_csp_stop(p); + for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i) + release_firmware(p->csp_programs[i]); + kfree(p); + } +} + +/* ------------------------------ */ + +/* + * open the device exclusively + */ +static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file) +{ + struct snd_sb_csp *p = hw->private_data; + return (snd_sb_csp_use(p)); +} + +/* + * ioctl for hwdep device: + */ +static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg) +{ + struct snd_sb_csp *p = hw->private_data; + struct snd_sb_csp_info info; + struct snd_sb_csp_start start_info; + int err; + + if (snd_BUG_ON(!p)) + return -EINVAL; + + if (snd_sb_csp_check_version(p)) + return -ENODEV; + + switch (cmd) { + /* get information */ + case SNDRV_SB_CSP_IOCTL_INFO: + *info.codec_name = *p->codec_name; + info.func_nr = p->func_nr; + info.acc_format = p->acc_format; + info.acc_channels = p->acc_channels; + info.acc_width = p->acc_width; + info.acc_rates = p->acc_rates; + info.csp_mode = p->mode; + info.run_channels = p->run_channels; + info.run_width = p->run_width; + info.version = p->version; + info.state = p->running; + if (copy_to_user((void __user *)arg, &info, sizeof(info))) + err = -EFAULT; + else + err = 0; + break; + + /* load CSP microcode */ + case SNDRV_SB_CSP_IOCTL_LOAD_CODE: + err = (p->running & SNDRV_SB_CSP_ST_RUNNING ? + -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg)); + break; + case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE: + err = (p->running & SNDRV_SB_CSP_ST_RUNNING ? + -EBUSY : snd_sb_csp_unload(p)); + break; + + /* change CSP running state */ + case SNDRV_SB_CSP_IOCTL_START: + if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info))) + err = -EFAULT; + else + err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels); + break; + case SNDRV_SB_CSP_IOCTL_STOP: + err = snd_sb_csp_stop(p); + break; + case SNDRV_SB_CSP_IOCTL_PAUSE: + err = snd_sb_csp_pause(p); + break; + case SNDRV_SB_CSP_IOCTL_RESTART: + err = snd_sb_csp_restart(p); + break; + default: + err = -ENOTTY; + break; + } + + return err; +} + +/* + * close the device + */ +static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file) +{ + struct snd_sb_csp *p = hw->private_data; + return (snd_sb_csp_unuse(p)); +} + +/* ------------------------------ */ + +/* + * acquire device + */ +static int snd_sb_csp_use(struct snd_sb_csp * p) +{ + mutex_lock(&p->access_mutex); + if (p->used) { + mutex_unlock(&p->access_mutex); + return -EAGAIN; + } + p->used++; + mutex_unlock(&p->access_mutex); + + return 0; + +} + +/* + * release device + */ +static int snd_sb_csp_unuse(struct snd_sb_csp * p) +{ + mutex_lock(&p->access_mutex); + p->used--; + mutex_unlock(&p->access_mutex); + + return 0; +} + +/* + * 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) +{ + struct snd_sb_csp_mc_header info; + + unsigned char __user *data_ptr; + unsigned char __user *data_end; + unsigned short func_nr = 0; + + struct riff_header file_h, item_h, code_h; + __u32 item_type; + struct desc_header funcdesc_h; + + unsigned long flags; + int err; + + if (copy_from_user(&info, mcode, sizeof(info))) + return -EFAULT; + data_ptr = mcode->data; + + if (copy_from_user(&file_h, data_ptr, sizeof(file_h))) + return -EFAULT; + if ((file_h.name != RIFF_HEADER) || + (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) { + snd_printd("%s: Invalid RIFF header\n", __func__); + return -EINVAL; + } + data_ptr += sizeof(file_h); + data_end = data_ptr + le32_to_cpu(file_h.len); + + if (copy_from_user(&item_type, data_ptr, sizeof(item_type))) + return -EFAULT; + if (item_type != CSP__HEADER) { + snd_printd("%s: Invalid RIFF file type\n", __func__); + return -EINVAL; + } + data_ptr += sizeof (item_type); + + for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) { + if (copy_from_user(&item_h, data_ptr, sizeof(item_h))) + return -EFAULT; + data_ptr += sizeof(item_h); + if (item_h.name != LIST_HEADER) + continue; + + if (copy_from_user(&item_type, data_ptr, sizeof(item_type))) + return -EFAULT; + switch (item_type) { + case FUNC_HEADER: + if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h))) + return -EFAULT; + func_nr = le16_to_cpu(funcdesc_h.func_nr); + break; + case CODE_HEADER: + if (func_nr != info.func_req) + break; /* not required function, try next */ + data_ptr += sizeof(item_type); + + /* destroy QSound mixer element */ + if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) { + snd_sb_qsound_destroy(p); + } + /* Clear all flags */ + p->running = 0; + p->mode = 0; + + /* load microcode blocks */ + for (;;) { + if (data_ptr >= data_end) + return -EINVAL; + if (copy_from_user(&code_h, data_ptr, sizeof(code_h))) + return -EFAULT; + + /* init microcode blocks */ + if (code_h.name != INIT_HEADER) + break; + data_ptr += sizeof(code_h); + err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len), + SNDRV_SB_CSP_LOAD_INITBLOCK); + if (err) + return err; + data_ptr += le32_to_cpu(code_h.len); + } + /* main microcode block */ + if (copy_from_user(&code_h, data_ptr, sizeof(code_h))) + return -EFAULT; + + if (code_h.name != MAIN_HEADER) { + snd_printd("%s: Missing 'main' microcode\n", __func__); + return -EINVAL; + } + data_ptr += sizeof(code_h); + err = snd_sb_csp_load_user(p, data_ptr, + le32_to_cpu(code_h.len), 0); + if (err) + return err; + + /* fill in codec header */ + strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name)); + p->func_nr = func_nr; + p->mode = le16_to_cpu(funcdesc_h.flags_play_rec); + switch (le16_to_cpu(funcdesc_h.VOC_type)) { + case 0x0001: /* QSound decoder */ + if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) { + if (snd_sb_qsound_build(p) == 0) + /* set QSound flag and clear all other mode flags */ + p->mode = SNDRV_SB_CSP_MODE_QSOUND; + } + p->acc_format = 0; + break; + case 0x0006: /* A Law codec */ + p->acc_format = SNDRV_PCM_FMTBIT_A_LAW; + break; + case 0x0007: /* Mu Law codec */ + p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW; + break; + case 0x0011: /* what Creative thinks is IMA ADPCM codec */ + case 0x0200: /* Creative ADPCM codec */ + p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM; + break; + case 201: /* Text 2 Speech decoder */ + /* TODO: Text2Speech handling routines */ + p->acc_format = 0; + break; + case 0x0202: /* Fast Speech 8 codec */ + case 0x0203: /* Fast Speech 10 codec */ + p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL; + break; + default: /* other codecs are unsupported */ + p->acc_format = p->acc_width = p->acc_rates = 0; + p->mode = 0; + snd_printd("%s: Unsupported CSP codec type: 0x%04x\n", + __func__, + le16_to_cpu(funcdesc_h.VOC_type)); + return -EINVAL; + } + p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono); + p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit); + p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates); + + /* Decouple CSP from IRQ and DMAREQ lines */ + spin_lock_irqsave(&p->chip->reg_lock, flags); + set_mode_register(p->chip, 0xfc); + set_mode_register(p->chip, 0x00); + spin_unlock_irqrestore(&p->chip->reg_lock, flags); + + /* finished loading successfully */ + p->running = SNDRV_SB_CSP_ST_LOADED; /* set LOADED flag */ + return 0; + } + } + snd_printd("%s: Function #%d not found\n", __func__, info.func_req); + return -EINVAL; +} + +/* + * unload CSP microcode + */ +static int snd_sb_csp_unload(struct snd_sb_csp * p) +{ + if (p->running & SNDRV_SB_CSP_ST_RUNNING) + return -EBUSY; + if (!(p->running & SNDRV_SB_CSP_ST_LOADED)) + return -ENXIO; + + /* clear supported formats */ + p->acc_format = 0; + p->acc_channels = p->acc_width = p->acc_rates = 0; + /* destroy QSound mixer element */ + if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) { + snd_sb_qsound_destroy(p); + } + /* clear all flags */ + p->running = 0; + p->mode = 0; + return 0; +} + +/* + * send command sequence to DSP + */ +static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size) +{ + int i; + for (i = 0; i < size; i++) { + if (!snd_sbdsp_command(chip, seq[i])) + return -EIO; + } + return 0; +} + +/* + * set CSP codec parameter + */ +static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val) +{ + unsigned char dsp_cmd[3]; + + dsp_cmd[0] = 0x05; /* CSP set codec parameter */ + dsp_cmd[1] = val; /* Parameter value */ + dsp_cmd[2] = par; /* Parameter */ + command_seq(chip, dsp_cmd, 3); + snd_sbdsp_command(chip, 0x03); /* DSP read? */ + if (snd_sbdsp_get_byte(chip) != par) + return -EIO; + return 0; +} + +/* + * set CSP register + */ +static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val) +{ + unsigned char dsp_cmd[3]; + + dsp_cmd[0] = 0x0e; /* CSP set register */ + dsp_cmd[1] = reg; /* CSP Register */ + dsp_cmd[2] = val; /* value */ + return command_seq(chip, dsp_cmd, 3); +} + +/* + * read CSP register + * return < 0 -> error + */ +static int read_register(struct snd_sb *chip, unsigned char reg) +{ + unsigned char dsp_cmd[2]; + + dsp_cmd[0] = 0x0f; /* CSP read register */ + dsp_cmd[1] = reg; /* CSP Register */ + command_seq(chip, dsp_cmd, 2); + return snd_sbdsp_get_byte(chip); /* Read DSP value */ +} + +/* + * set CSP mode register + */ +static int set_mode_register(struct snd_sb *chip, unsigned char mode) +{ + unsigned char dsp_cmd[2]; + + dsp_cmd[0] = 0x04; /* CSP set mode register */ + dsp_cmd[1] = mode; /* mode */ + return command_seq(chip, dsp_cmd, 2); +} + +/* + * Detect CSP + * return 0 if CSP exists. + */ +static int csp_detect(struct snd_sb *chip, int *version) +{ + unsigned char csp_test1, csp_test2; + unsigned long flags; + int result = -ENODEV; + + spin_lock_irqsave(&chip->reg_lock, flags); + + set_codec_parameter(chip, 0x00, 0x00); + set_mode_register(chip, 0xfc); /* 0xfc = ?? */ + + csp_test1 = read_register(chip, 0x83); + set_register(chip, 0x83, ~csp_test1); + csp_test2 = read_register(chip, 0x83); + if (csp_test2 != (csp_test1 ^ 0xff)) + goto __fail; + + set_register(chip, 0x83, csp_test1); + csp_test2 = read_register(chip, 0x83); + if (csp_test2 != csp_test1) + goto __fail; + + set_mode_register(chip, 0x00); /* 0x00 = ? */ + + *version = get_version(chip); + snd_sbdsp_reset(chip); /* reset DSP after getversion! */ + if (*version >= 0x10 && *version <= 0x1f) + result = 0; /* valid version id */ + + __fail: + spin_unlock_irqrestore(&chip->reg_lock, flags); + return result; +} + +/* + * get CSP version number + */ +static int get_version(struct snd_sb *chip) +{ + unsigned char dsp_cmd[2]; + + dsp_cmd[0] = 0x08; /* SB_DSP_!something! */ + dsp_cmd[1] = 0x03; /* get chip version id? */ + command_seq(chip, dsp_cmd, 2); + + return (snd_sbdsp_get_byte(chip)); +} + +/* + * check if the CSP version is valid + */ +static int snd_sb_csp_check_version(struct snd_sb_csp * p) +{ + if (p->version < 0x10 || p->version > 0x1f) { + snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version); + return 1; + } + return 0; +} + +/* + * 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) +{ + int status, i; + int err; + int result = -EIO; + unsigned long flags; + + spin_lock_irqsave(&p->chip->reg_lock, flags); + snd_sbdsp_command(p->chip, 0x01); /* CSP download command */ + if (snd_sbdsp_get_byte(p->chip)) { + snd_printd("%s: Download command failed\n", __func__); + goto __fail; + } + /* Send CSP low byte (size - 1) */ + snd_sbdsp_command(p->chip, (unsigned char)(size - 1)); + /* Send high byte */ + snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8)); + /* send microcode sequence */ + /* load from kernel space */ + while (size--) { + if (!snd_sbdsp_command(p->chip, *buf++)) + goto __fail; + } + if (snd_sbdsp_get_byte(p->chip)) + goto __fail; + + if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) { + i = 0; + /* some codecs (FastSpeech) take some time to initialize */ + while (1) { + snd_sbdsp_command(p->chip, 0x03); + status = snd_sbdsp_get_byte(p->chip); + if (status == 0x55 || ++i >= 10) + break; + udelay (10); + } + if (status != 0x55) { + snd_printd("%s: Microcode initialization failed\n", __func__); + goto __fail; + } + } else { + /* + * Read mixer register SB_DSP4_DMASETUP after loading 'main' code. + * Start CSP chip if no 16bit DMA channel is set - some kind + * of autorun or perhaps a bugfix? + */ + spin_lock(&p->chip->mixer_lock); + status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP); + spin_unlock(&p->chip->mixer_lock); + if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) { + err = (set_codec_parameter(p->chip, 0xaa, 0x00) || + set_codec_parameter(p->chip, 0xff, 0x00)); + snd_sbdsp_reset(p->chip); /* really! */ + if (err) + goto __fail; + set_mode_register(p->chip, 0xc0); /* c0 = STOP */ + set_mode_register(p->chip, 0x70); /* 70 = RUN */ + } + } + result = 0; + + __fail: + spin_unlock_irqrestore(&p->chip->reg_lock, flags); + return result; +} + +static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags) +{ + int err = -ENOMEM; + unsigned char *kbuf = kmalloc(size, GFP_KERNEL); + if (kbuf) { + if (copy_from_user(kbuf, buf, size)) + err = -EFAULT; + else + err = snd_sb_csp_load(p, kbuf, size, load_flags); + kfree(kbuf); + } + return err; +} + +static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags) +{ + static const char *const names[] = { + "sb16/mulaw_main.csp", + "sb16/alaw_main.csp", + "sb16/ima_adpcm_init.csp", + "sb16/ima_adpcm_playback.csp", + "sb16/ima_adpcm_capture.csp", + }; + const struct firmware *program; + + BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT); + program = p->csp_programs[index]; + if (!program) { + int err = request_firmware(&program, names[index], + p->chip->card->dev); + if (err < 0) + return err; + p->csp_programs[index] = program; + } + return snd_sb_csp_load(p, program->data, program->size, 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, int pcm_sfmt, int play_rec_mode) +{ + unsigned long flags; + int err = 0; + + /* if CSP is running or manually loaded then exit */ + if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) + return -EBUSY; + + /* autoload microcode only if requested hardware codec is not already loaded */ + if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) { + p->running = SNDRV_SB_CSP_ST_AUTO; + } else { + switch (pcm_sfmt) { + case SNDRV_PCM_FORMAT_MU_LAW: + err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0); + p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW; + p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE; + break; + case SNDRV_PCM_FORMAT_A_LAW: + err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0); + p->acc_format = SNDRV_PCM_FMTBIT_A_LAW; + p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE; + break; + case SNDRV_PCM_FORMAT_IMA_ADPCM: + err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT, + SNDRV_SB_CSP_LOAD_INITBLOCK); + if (err) + break; + if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) { + err = snd_sb_csp_firmware_load + (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0); + p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE; + } else { + err = snd_sb_csp_firmware_load + (p, CSP_PROGRAM_ADPCM_CAPTURE, 0); + p->mode = SNDRV_SB_CSP_MODE_DSP_READ; + } + p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM; + break; + default: + /* Decouple CSP from IRQ and DMAREQ lines */ + if (p->running & SNDRV_SB_CSP_ST_AUTO) { + spin_lock_irqsave(&p->chip->reg_lock, flags); + set_mode_register(p->chip, 0xfc); + set_mode_register(p->chip, 0x00); + spin_unlock_irqrestore(&p->chip->reg_lock, flags); + p->running = 0; /* clear autoloaded flag */ + } + return -EINVAL; + } + if (err) { + p->acc_format = 0; + p->acc_channels = p->acc_width = p->acc_rates = 0; + + p->running = 0; /* clear autoloaded flag */ + p->mode = 0; + return (err); + } else { + p->running = SNDRV_SB_CSP_ST_AUTO; /* set autoloaded flag */ + p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT; /* only 16 bit data */ + p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO; + p->acc_rates = SNDRV_SB_CSP_RATE_ALL; /* HW codecs accept all rates */ + } + + } + return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO; +} + +/* + * start CSP + */ +static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels) +{ + unsigned char s_type; /* sample type */ + unsigned char mixL, mixR; + int result = -EIO; + unsigned long flags; + + if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) { + snd_printd("%s: Microcode not loaded\n", __func__); + return -ENXIO; + } + if (p->running & SNDRV_SB_CSP_ST_RUNNING) { + snd_printd("%s: CSP already running\n", __func__); + return -EBUSY; + } + if (!(sample_width & p->acc_width)) { + snd_printd("%s: Unsupported PCM sample width\n", __func__); + return -EINVAL; + } + if (!(channels & p->acc_channels)) { + snd_printd("%s: Invalid number of channels\n", __func__); + return -EINVAL; + } + + /* Mute PCM volume */ + spin_lock_irqsave(&p->chip->mixer_lock, flags); + mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV); + mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1); + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7); + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7); + + spin_lock(&p->chip->reg_lock); + set_mode_register(p->chip, 0xc0); /* c0 = STOP */ + set_mode_register(p->chip, 0x70); /* 70 = RUN */ + + s_type = 0x00; + if (channels == SNDRV_SB_CSP_MONO) + s_type = 0x11; /* 000n 000n (n = 1 if mono) */ + if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT) + s_type |= 0x22; /* 00dX 00dX (d = 1 if 8 bit samples) */ + + if (set_codec_parameter(p->chip, 0x81, s_type)) { + snd_printd("%s: Set sample type command failed\n", __func__); + goto __fail; + } + if (set_codec_parameter(p->chip, 0x80, 0x00)) { + snd_printd("%s: Codec start command failed\n", __func__); + goto __fail; + } + p->run_width = sample_width; + p->run_channels = channels; + + p->running |= SNDRV_SB_CSP_ST_RUNNING; + + if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) { + set_codec_parameter(p->chip, 0xe0, 0x01); + /* enable QSound decoder */ + set_codec_parameter(p->chip, 0x00, 0xff); + set_codec_parameter(p->chip, 0x01, 0xff); + p->running |= SNDRV_SB_CSP_ST_QSOUND; + /* set QSound startup value */ + snd_sb_csp_qsound_transfer(p); + } + result = 0; + + __fail: + spin_unlock(&p->chip->reg_lock); + + /* restore PCM volume */ + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL); + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR); + spin_unlock_irqrestore(&p->chip->mixer_lock, flags); + + return result; +} + +/* + * stop CSP + */ +static int snd_sb_csp_stop(struct snd_sb_csp * p) +{ + int result; + unsigned char mixL, mixR; + unsigned long flags; + + if (!(p->running & SNDRV_SB_CSP_ST_RUNNING)) + return 0; + + /* Mute PCM volume */ + spin_lock_irqsave(&p->chip->mixer_lock, flags); + mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV); + mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1); + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7); + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7); + + spin_lock(&p->chip->reg_lock); + if (p->running & SNDRV_SB_CSP_ST_QSOUND) { + set_codec_parameter(p->chip, 0xe0, 0x01); + /* disable QSound decoder */ + set_codec_parameter(p->chip, 0x00, 0x00); + set_codec_parameter(p->chip, 0x01, 0x00); + + p->running &= ~SNDRV_SB_CSP_ST_QSOUND; + } + result = set_mode_register(p->chip, 0xc0); /* c0 = STOP */ + spin_unlock(&p->chip->reg_lock); + + /* restore PCM volume */ + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL); + snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR); + spin_unlock_irqrestore(&p->chip->mixer_lock, flags); + + if (!(result)) + p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING); + return result; +} + +/* + * pause CSP codec and hold DMA transfer + */ +static int snd_sb_csp_pause(struct snd_sb_csp * p) +{ + int result; + unsigned long flags; + + if (!(p->running & SNDRV_SB_CSP_ST_RUNNING)) + return -EBUSY; + + spin_lock_irqsave(&p->chip->reg_lock, flags); + result = set_codec_parameter(p->chip, 0x80, 0xff); + spin_unlock_irqrestore(&p->chip->reg_lock, flags); + if (!(result)) + p->running |= SNDRV_SB_CSP_ST_PAUSED; + + return result; +} + +/* + * restart CSP codec and resume DMA transfer + */ +static int snd_sb_csp_restart(struct snd_sb_csp * p) +{ + int result; + unsigned long flags; + + if (!(p->running & SNDRV_SB_CSP_ST_PAUSED)) + return -EBUSY; + + spin_lock_irqsave(&p->chip->reg_lock, flags); + result = set_codec_parameter(p->chip, 0x80, 0x00); + spin_unlock_irqrestore(&p->chip->reg_lock, flags); + if (!(result)) + p->running &= ~SNDRV_SB_CSP_ST_PAUSED; + + return result; +} + +/* ------------------------------ */ + +/* + * QSound mixer control for PCM + */ + +#define snd_sb_qsound_switch_info snd_ctl_boolean_mono_info + +static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); + + ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0; + return 0; +} + +static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); + unsigned long flags; + int change; + unsigned char nval; + + nval = ucontrol->value.integer.value[0] & 0x01; + spin_lock_irqsave(&p->q_lock, flags); + change = p->q_enabled != nval; + p->q_enabled = nval; + spin_unlock_irqrestore(&p->q_lock, flags); + return change; +} + +static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT; + return 0; +} + +static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); + unsigned long flags; + + spin_lock_irqsave(&p->q_lock, flags); + ucontrol->value.integer.value[0] = p->qpos_left; + ucontrol->value.integer.value[1] = p->qpos_right; + spin_unlock_irqrestore(&p->q_lock, flags); + return 0; +} + +static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); + unsigned long flags; + int change; + unsigned char nval1, nval2; + + nval1 = ucontrol->value.integer.value[0]; + if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT) + nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT; + nval2 = ucontrol->value.integer.value[1]; + if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT) + nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT; + spin_lock_irqsave(&p->q_lock, flags); + change = p->qpos_left != nval1 || p->qpos_right != nval2; + p->qpos_left = nval1; + p->qpos_right = nval2; + p->qpos_changed = change; + spin_unlock_irqrestore(&p->q_lock, flags); + return change; +} + +static struct snd_kcontrol_new snd_sb_qsound_switch = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "3D Control - Switch", + .info = snd_sb_qsound_switch_info, + .get = snd_sb_qsound_switch_get, + .put = snd_sb_qsound_switch_put +}; + +static struct snd_kcontrol_new snd_sb_qsound_space = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "3D Control - Space", + .info = snd_sb_qsound_space_info, + .get = snd_sb_qsound_space_get, + .put = snd_sb_qsound_space_put +}; + +static int snd_sb_qsound_build(struct snd_sb_csp * p) +{ + struct snd_card *card; + int err; + + if (snd_BUG_ON(!p)) + return -EINVAL; + + card = p->chip->card; + p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2; + p->qpos_changed = 0; + + spin_lock_init(&p->q_lock); + + if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0) + goto __error; + if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0) + goto __error; + + return 0; + + __error: + snd_sb_qsound_destroy(p); + return err; +} + +static void snd_sb_qsound_destroy(struct snd_sb_csp * p) +{ + struct snd_card *card; + unsigned long flags; + + if (snd_BUG_ON(!p)) + return; + + card = p->chip->card; + + down_write(&card->controls_rwsem); + if (p->qsound_switch) + snd_ctl_remove(card, p->qsound_switch); + if (p->qsound_space) + snd_ctl_remove(card, p->qsound_space); + up_write(&card->controls_rwsem); + + /* cancel pending transfer of QSound parameters */ + spin_lock_irqsave (&p->q_lock, flags); + p->qpos_changed = 0; + spin_unlock_irqrestore (&p->q_lock, flags); +} + +/* + * Transfer qsound parameters to CSP, + * function should be called from interrupt routine + */ +static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p) +{ + int err = -ENXIO; + + spin_lock(&p->q_lock); + if (p->running & SNDRV_SB_CSP_ST_QSOUND) { + set_codec_parameter(p->chip, 0xe0, 0x01); + /* left channel */ + set_codec_parameter(p->chip, 0x00, p->qpos_left); + set_codec_parameter(p->chip, 0x02, 0x00); + /* right channel */ + set_codec_parameter(p->chip, 0x00, p->qpos_right); + set_codec_parameter(p->chip, 0x03, 0x00); + err = 0; + } + p->qpos_changed = 0; + spin_unlock(&p->q_lock); + return err; +} + +/* ------------------------------ */ + +/* + * proc interface + */ +static int init_proc_entry(struct snd_sb_csp * p, int device) +{ + char name[16]; + struct snd_info_entry *entry; + sprintf(name, "cspD%d", device); + if (! snd_card_proc_new(p->chip->card, name, &entry)) + snd_info_set_text_ops(entry, p, info_read); + return 0; +} + +static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) +{ + struct snd_sb_csp *p = entry->private_data; + + snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f)); + snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'), + ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'), + ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'), + ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-')); + if (p->running & SNDRV_SB_CSP_ST_LOADED) { + snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr); + snd_iprintf(buffer, "Sample rates: "); + if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) { + snd_iprintf(buffer, "All\n"); + } else { + snd_iprintf(buffer, "%s%s%s%s\n", + ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""), + ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""), + ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""), + ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : "")); + } + if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) { + snd_iprintf(buffer, "QSound decoder %sabled\n", + p->q_enabled ? "en" : "dis"); + } else { + snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n", + p->acc_format, + ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"), + ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"), + ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"), + ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"), + ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"), + ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-")); + } + } + if (p->running & SNDRV_SB_CSP_ST_AUTO) { + snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n"); + } + if (p->running & SNDRV_SB_CSP_ST_RUNNING) { + snd_iprintf(buffer, "Processing %dbit %s PCM samples\n", + ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8), + ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo")); + } + if (p->running & SNDRV_SB_CSP_ST_QSOUND) { + snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n", + p->qpos_left, p->qpos_right); + } +} + +/* */ + +EXPORT_SYMBOL(snd_sb_csp_new); + +/* + * INIT part + */ + +static int __init alsa_sb_csp_init(void) +{ + return 0; +} + +static void __exit alsa_sb_csp_exit(void) +{ +} + +module_init(alsa_sb_csp_init) +module_exit(alsa_sb_csp_exit) |
