diff options
Diffstat (limited to 'sound/isa/sb/sb16_main.c')
| -rw-r--r-- | sound/isa/sb/sb16_main.c | 868 |
1 files changed, 868 insertions, 0 deletions
diff --git a/sound/isa/sb/sb16_main.c b/sound/isa/sb/sb16_main.c new file mode 100644 index 000000000..aa4870531 --- /dev/null +++ b/sound/isa/sb/sb16_main.c @@ -0,0 +1,868 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> + * Routines for control of 16-bit SoundBlaster cards and clones + * Note: This is very ugly hardware which uses one 8-bit DMA channel and + * second 16-bit DMA channel. Unfortunately 8-bit DMA channel can't + * transfer 16-bit samples and 16-bit DMA channels can't transfer + * 8-bit samples. This make full duplex more complicated than + * can be... People, don't buy these soundcards for full 16-bit + * duplex!!! + * Note: 16-bit wide is assigned to first direction which made request. + * With full duplex - playback is preferred with abstract layer. + * + * Note: Some chip revisions have hardware bug. Changing capture + * channel from full-duplex 8bit DMA to 16bit DMA will block + * 16bit DMA transfers from DSP chip (capture) until 8bit transfer + * to DSP chip (playback) starts. This bug can be avoided with + * "16bit DMA Allocation" setting set to Playback or Capture. + */ + +#include <linux/io.h> +#include <asm/dma.h> +#include <linux/init.h> +#include <linux/time.h> +#include <linux/module.h> +#include <sound/core.h> +#include <sound/sb.h> +#include <sound/sb16_csp.h> +#include <sound/mpu401.h> +#include <sound/control.h> +#include <sound/info.h> + +MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); +MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones"); +MODULE_LICENSE("GPL"); + +#define runtime_format_bits(runtime) \ + ((unsigned int)pcm_format_to_bits((runtime)->format)) + +#ifdef CONFIG_SND_SB16_CSP +static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime) +{ + if (chip->hardware == SB_HW_16CSP) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->running & SNDRV_SB_CSP_ST_LOADED) { + /* manually loaded codec */ + if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) && + (runtime_format_bits(runtime) == csp->acc_format)) { + /* Supported runtime PCM format for playback */ + if (csp->ops.csp_use(csp) == 0) { + /* If CSP was successfully acquired */ + goto __start_CSP; + } + } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) { + /* QSound decoder is loaded and enabled */ + if (runtime_format_bits(runtime) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | + SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) { + /* Only for simple PCM formats */ + if (csp->ops.csp_use(csp) == 0) { + /* If CSP was successfully acquired */ + goto __start_CSP; + } + } + } + } else if (csp->ops.csp_use(csp) == 0) { + /* Acquire CSP and try to autoload hardware codec */ + if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) { + /* Unsupported format, release CSP */ + csp->ops.csp_unuse(csp); + } else { + __start_CSP: + /* Try to start CSP */ + if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ? + SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT, + (runtime->channels > 1) ? + SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) { + /* Failed, release CSP */ + csp->ops.csp_unuse(csp); + } else { + /* Success, CSP acquired and running */ + chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE; + } + } + } + } +} + +static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime) +{ + if (chip->hardware == SB_HW_16CSP) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->running & SNDRV_SB_CSP_ST_LOADED) { + /* manually loaded codec */ + if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) && + (runtime_format_bits(runtime) == csp->acc_format)) { + /* Supported runtime PCM format for capture */ + if (csp->ops.csp_use(csp) == 0) { + /* If CSP was successfully acquired */ + goto __start_CSP; + } + } + } else if (csp->ops.csp_use(csp) == 0) { + /* Acquire CSP and try to autoload hardware codec */ + if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) { + /* Unsupported format, release CSP */ + csp->ops.csp_unuse(csp); + } else { + __start_CSP: + /* Try to start CSP */ + if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ? + SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT, + (runtime->channels > 1) ? + SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) { + /* Failed, release CSP */ + csp->ops.csp_unuse(csp); + } else { + /* Success, CSP acquired and running */ + chip->open = SNDRV_SB_CSP_MODE_DSP_READ; + } + } + } + } +} + +static void snd_sb16_csp_update(struct snd_sb *chip) +{ + if (chip->hardware == SB_HW_16CSP) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->qpos_changed) { + spin_lock(&chip->reg_lock); + csp->ops.csp_qsound_transfer (csp); + spin_unlock(&chip->reg_lock); + } + } +} + +static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime) +{ + /* CSP decoders (QSound excluded) support only 16bit transfers */ + if (chip->hardware == SB_HW_16CSP) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->running & SNDRV_SB_CSP_ST_LOADED) { + /* manually loaded codec */ + if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) { + runtime->hw.formats |= csp->acc_format; + } + } else { + /* autoloaded codecs */ + runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | + SNDRV_PCM_FMTBIT_IMA_ADPCM; + } + } +} + +static void snd_sb16_csp_playback_close(struct snd_sb *chip) +{ + if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->ops.csp_stop(csp) == 0) { + csp->ops.csp_unuse(csp); + chip->open = 0; + } + } +} + +static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime) +{ + /* CSP coders support only 16bit transfers */ + if (chip->hardware == SB_HW_16CSP) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->running & SNDRV_SB_CSP_ST_LOADED) { + /* manually loaded codec */ + if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) { + runtime->hw.formats |= csp->acc_format; + } + } else { + /* autoloaded codecs */ + runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | + SNDRV_PCM_FMTBIT_IMA_ADPCM; + } + } +} + +static void snd_sb16_csp_capture_close(struct snd_sb *chip) +{ + if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) { + struct snd_sb_csp *csp = chip->csp; + + if (csp->ops.csp_stop(csp) == 0) { + csp->ops.csp_unuse(csp); + chip->open = 0; + } + } +} +#else +#define snd_sb16_csp_playback_prepare(chip, runtime) /*nop*/ +#define snd_sb16_csp_capture_prepare(chip, runtime) /*nop*/ +#define snd_sb16_csp_update(chip) /*nop*/ +#define snd_sb16_csp_playback_open(chip, runtime) /*nop*/ +#define snd_sb16_csp_playback_close(chip) /*nop*/ +#define snd_sb16_csp_capture_open(chip, runtime) /*nop*/ +#define snd_sb16_csp_capture_close(chip) /*nop*/ +#endif + + +static void snd_sb16_setup_rate(struct snd_sb *chip, + unsigned short rate, + int channel) +{ + unsigned long flags; + + spin_lock_irqsave(&chip->reg_lock, flags); + if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16)) + snd_sb_ack_16bit(chip); + else + snd_sb_ack_8bit(chip); + if (!(chip->mode & SB_RATE_LOCK)) { + chip->locked_rate = rate; + snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN); + snd_sbdsp_command(chip, rate >> 8); + snd_sbdsp_command(chip, rate & 0xff); + snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT); + snd_sbdsp_command(chip, rate >> 8); + snd_sbdsp_command(chip, rate & 0xff); + } + spin_unlock_irqrestore(&chip->reg_lock, flags); +} + +static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned char format; + unsigned int size, count, dma; + + snd_sb16_csp_playback_prepare(chip, runtime); + if (snd_pcm_format_unsigned(runtime->format) > 0) { + format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO; + } else { + format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO; + } + + snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK); + size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream); + dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16; + snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT); + + count = snd_pcm_lib_period_bytes(substream); + spin_lock_irqsave(&chip->reg_lock, flags); + if (chip->mode & SB_MODE_PLAYBACK_16) { + count >>= 1; + count--; + snd_sbdsp_command(chip, SB_DSP4_OUT16_AI); + snd_sbdsp_command(chip, format); + snd_sbdsp_command(chip, count & 0xff); + snd_sbdsp_command(chip, count >> 8); + snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); + } else { + count--; + snd_sbdsp_command(chip, SB_DSP4_OUT8_AI); + snd_sbdsp_command(chip, format); + snd_sbdsp_command(chip, count & 0xff); + snd_sbdsp_command(chip, count >> 8); + snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); + } + spin_unlock_irqrestore(&chip->reg_lock, flags); + return 0; +} + +static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + int result = 0; + + spin_lock(&chip->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + chip->mode |= SB_RATE_LOCK_PLAYBACK; + snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF); + /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */ + if (chip->mode & SB_RATE_LOCK_CAPTURE) + snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); + chip->mode &= ~SB_RATE_LOCK_PLAYBACK; + break; + default: + result = -EINVAL; + } + spin_unlock(&chip->reg_lock); + return result; +} + +static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned char format; + unsigned int size, count, dma; + + snd_sb16_csp_capture_prepare(chip, runtime); + if (snd_pcm_format_unsigned(runtime->format) > 0) { + format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO; + } else { + format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO; + } + snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE); + size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream); + dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16; + snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT); + + count = snd_pcm_lib_period_bytes(substream); + spin_lock_irqsave(&chip->reg_lock, flags); + if (chip->mode & SB_MODE_CAPTURE_16) { + count >>= 1; + count--; + snd_sbdsp_command(chip, SB_DSP4_IN16_AI); + snd_sbdsp_command(chip, format); + snd_sbdsp_command(chip, count & 0xff); + snd_sbdsp_command(chip, count >> 8); + snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); + } else { + count--; + snd_sbdsp_command(chip, SB_DSP4_IN8_AI); + snd_sbdsp_command(chip, format); + snd_sbdsp_command(chip, count & 0xff); + snd_sbdsp_command(chip, count >> 8); + snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); + } + spin_unlock_irqrestore(&chip->reg_lock, flags); + return 0; +} + +static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + int result = 0; + + spin_lock(&chip->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + chip->mode |= SB_RATE_LOCK_CAPTURE; + snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF); + /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */ + if (chip->mode & SB_RATE_LOCK_PLAYBACK) + snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON); + chip->mode &= ~SB_RATE_LOCK_CAPTURE; + break; + default: + result = -EINVAL; + } + spin_unlock(&chip->reg_lock); + return result; +} + +irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id) +{ + struct snd_sb *chip = dev_id; + unsigned char status; + int ok; + + spin_lock(&chip->mixer_lock); + status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS); + spin_unlock(&chip->mixer_lock); + if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback) + chip->rmidi_callback(irq, chip->rmidi->private_data); + if (status & SB_IRQTYPE_8BIT) { + ok = 0; + if (chip->mode & SB_MODE_PLAYBACK_8) { + snd_pcm_period_elapsed(chip->playback_substream); + snd_sb16_csp_update(chip); + ok++; + } + if (chip->mode & SB_MODE_CAPTURE_8) { + snd_pcm_period_elapsed(chip->capture_substream); + ok++; + } + spin_lock(&chip->reg_lock); + if (!ok) + snd_sbdsp_command(chip, SB_DSP_DMA8_OFF); + snd_sb_ack_8bit(chip); + spin_unlock(&chip->reg_lock); + } + if (status & SB_IRQTYPE_16BIT) { + ok = 0; + if (chip->mode & SB_MODE_PLAYBACK_16) { + snd_pcm_period_elapsed(chip->playback_substream); + snd_sb16_csp_update(chip); + ok++; + } + if (chip->mode & SB_MODE_CAPTURE_16) { + snd_pcm_period_elapsed(chip->capture_substream); + ok++; + } + spin_lock(&chip->reg_lock); + if (!ok) + snd_sbdsp_command(chip, SB_DSP_DMA16_OFF); + snd_sb_ack_16bit(chip); + spin_unlock(&chip->reg_lock); + } + return IRQ_HANDLED; +} + +/* + + */ + +static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + unsigned int dma; + size_t ptr; + + dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16; + ptr = snd_dma_pointer(dma, chip->p_dma_size); + return bytes_to_frames(substream->runtime, ptr); +} + +static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + unsigned int dma; + size_t ptr; + + dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16; + ptr = snd_dma_pointer(dma, chip->c_dma_size); + return bytes_to_frames(substream->runtime, ptr); +} + +/* + + */ + +static const struct snd_pcm_hardware snd_sb16_playback = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = 0, + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, + .rate_min = 4000, + .rate_max = 44100, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 64, + .period_bytes_max = (128*1024), + .periods_min = 1, + .periods_max = 1024, + .fifo_size = 0, +}; + +static const struct snd_pcm_hardware snd_sb16_capture = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = 0, + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, + .rate_min = 4000, + .rate_max = 44100, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 64, + .period_bytes_max = (128*1024), + .periods_min = 1, + .periods_max = 1024, + .fifo_size = 0, +}; + +/* + * open/close + */ + +static int snd_sb16_playback_open(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + spin_lock_irqsave(&chip->open_lock, flags); + if (chip->mode & SB_MODE_PLAYBACK) { + spin_unlock_irqrestore(&chip->open_lock, flags); + return -EAGAIN; + } + runtime->hw = snd_sb16_playback; + + /* skip if 16 bit DMA was reserved for capture */ + if (chip->force_mode16 & SB_MODE_CAPTURE_16) + goto __skip_16bit; + + if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) { + chip->mode |= SB_MODE_PLAYBACK_16; + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; + /* Vibra16X hack */ + if (chip->dma16 <= 3) { + runtime->hw.buffer_bytes_max = + runtime->hw.period_bytes_max = 64 * 1024; + } else { + snd_sb16_csp_playback_open(chip, runtime); + } + goto __open_ok; + } + + __skip_16bit: + if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) { + chip->mode |= SB_MODE_PLAYBACK_8; + /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */ + if (chip->dma16 < 0) { + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; + chip->mode |= SB_MODE_PLAYBACK_16; + } else { + runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8; + } + runtime->hw.buffer_bytes_max = + runtime->hw.period_bytes_max = 64 * 1024; + goto __open_ok; + } + spin_unlock_irqrestore(&chip->open_lock, flags); + return -EAGAIN; + + __open_ok: + if (chip->hardware == SB_HW_ALS100) + runtime->hw.rate_max = 48000; + if (chip->hardware == SB_HW_CS5530) { + runtime->hw.buffer_bytes_max = 32 * 1024; + runtime->hw.periods_min = 2; + runtime->hw.rate_min = 44100; + } + if (chip->mode & SB_RATE_LOCK) + runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate; + chip->playback_substream = substream; + spin_unlock_irqrestore(&chip->open_lock, flags); + return 0; +} + +static int snd_sb16_playback_close(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + + snd_sb16_csp_playback_close(chip); + spin_lock_irqsave(&chip->open_lock, flags); + chip->playback_substream = NULL; + chip->mode &= ~SB_MODE_PLAYBACK; + spin_unlock_irqrestore(&chip->open_lock, flags); + return 0; +} + +static int snd_sb16_capture_open(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + spin_lock_irqsave(&chip->open_lock, flags); + if (chip->mode & SB_MODE_CAPTURE) { + spin_unlock_irqrestore(&chip->open_lock, flags); + return -EAGAIN; + } + runtime->hw = snd_sb16_capture; + + /* skip if 16 bit DMA was reserved for playback */ + if (chip->force_mode16 & SB_MODE_PLAYBACK_16) + goto __skip_16bit; + + if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) { + chip->mode |= SB_MODE_CAPTURE_16; + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; + /* Vibra16X hack */ + if (chip->dma16 <= 3) { + runtime->hw.buffer_bytes_max = + runtime->hw.period_bytes_max = 64 * 1024; + } else { + snd_sb16_csp_capture_open(chip, runtime); + } + goto __open_ok; + } + + __skip_16bit: + if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) { + chip->mode |= SB_MODE_CAPTURE_8; + /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */ + if (chip->dma16 < 0) { + runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE; + chip->mode |= SB_MODE_CAPTURE_16; + } else { + runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8; + } + runtime->hw.buffer_bytes_max = + runtime->hw.period_bytes_max = 64 * 1024; + goto __open_ok; + } + spin_unlock_irqrestore(&chip->open_lock, flags); + return -EAGAIN; + + __open_ok: + if (chip->hardware == SB_HW_ALS100) + runtime->hw.rate_max = 48000; + if (chip->hardware == SB_HW_CS5530) { + runtime->hw.buffer_bytes_max = 32 * 1024; + runtime->hw.periods_min = 2; + runtime->hw.rate_min = 44100; + } + if (chip->mode & SB_RATE_LOCK) + runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate; + chip->capture_substream = substream; + spin_unlock_irqrestore(&chip->open_lock, flags); + return 0; +} + +static int snd_sb16_capture_close(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + + snd_sb16_csp_capture_close(chip); + spin_lock_irqsave(&chip->open_lock, flags); + chip->capture_substream = NULL; + chip->mode &= ~SB_MODE_CAPTURE; + spin_unlock_irqrestore(&chip->open_lock, flags); + return 0; +} + +/* + * DMA control interface + */ + +static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what) +{ + if (chip->dma8 < 0 || chip->dma16 < 0) { + if (snd_BUG_ON(what)) + return -EINVAL; + return 0; + } + if (what == 0) { + chip->force_mode16 = 0; + } else if (what == 1) { + chip->force_mode16 = SB_MODE_PLAYBACK_16; + } else if (what == 2) { + chip->force_mode16 = SB_MODE_CAPTURE_16; + } else { + return -EINVAL; + } + return 0; +} + +static int snd_sb16_get_dma_mode(struct snd_sb *chip) +{ + if (chip->dma8 < 0 || chip->dma16 < 0) + return 0; + switch (chip->force_mode16) { + case SB_MODE_PLAYBACK_16: + return 1; + case SB_MODE_CAPTURE_16: + return 2; + default: + return 0; + } +} + +static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + static const char * const texts[3] = { + "Auto", "Playback", "Capture" + }; + + return snd_ctl_enum_info(uinfo, 1, 3, texts); +} + +static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_sb *chip = snd_kcontrol_chip(kcontrol); + unsigned long flags; + + spin_lock_irqsave(&chip->reg_lock, flags); + ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip); + spin_unlock_irqrestore(&chip->reg_lock, flags); + return 0; +} + +static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_sb *chip = snd_kcontrol_chip(kcontrol); + unsigned long flags; + unsigned char nval, oval; + int change; + + if ((nval = ucontrol->value.enumerated.item[0]) > 2) + return -EINVAL; + spin_lock_irqsave(&chip->reg_lock, flags); + oval = snd_sb16_get_dma_mode(chip); + change = nval != oval; + snd_sb16_set_dma_mode(chip, nval); + spin_unlock_irqrestore(&chip->reg_lock, flags); + return change; +} + +static const struct snd_kcontrol_new snd_sb16_dma_control = { + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .name = "16-bit DMA Allocation", + .info = snd_sb16_dma_control_info, + .get = snd_sb16_dma_control_get, + .put = snd_sb16_dma_control_put +}; + +/* + * Initialization part + */ + +int snd_sb16dsp_configure(struct snd_sb * chip) +{ + unsigned long flags; + unsigned char irqreg = 0, dmareg = 0, mpureg; + unsigned char realirq, realdma, realmpureg; + /* note: mpu register should be present only on SB16 Vibra soundcards */ + + // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16); + spin_lock_irqsave(&chip->mixer_lock, flags); + mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06; + spin_unlock_irqrestore(&chip->mixer_lock, flags); + switch (chip->irq) { + case 2: + case 9: + irqreg |= SB_IRQSETUP_IRQ9; + break; + case 5: + irqreg |= SB_IRQSETUP_IRQ5; + break; + case 7: + irqreg |= SB_IRQSETUP_IRQ7; + break; + case 10: + irqreg |= SB_IRQSETUP_IRQ10; + break; + default: + return -EINVAL; + } + if (chip->dma8 >= 0) { + switch (chip->dma8) { + case 0: + dmareg |= SB_DMASETUP_DMA0; + break; + case 1: + dmareg |= SB_DMASETUP_DMA1; + break; + case 3: + dmareg |= SB_DMASETUP_DMA3; + break; + default: + return -EINVAL; + } + } + if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) { + switch (chip->dma16) { + case 5: + dmareg |= SB_DMASETUP_DMA5; + break; + case 6: + dmareg |= SB_DMASETUP_DMA6; + break; + case 7: + dmareg |= SB_DMASETUP_DMA7; + break; + default: + return -EINVAL; + } + } + switch (chip->mpu_port) { + case 0x300: + mpureg |= 0x04; + break; + case 0x330: + mpureg |= 0x00; + break; + default: + mpureg |= 0x02; /* disable MPU */ + } + spin_lock_irqsave(&chip->mixer_lock, flags); + + snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg); + realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP); + + snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg); + realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP); + + snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg); + realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP); + + spin_unlock_irqrestore(&chip->mixer_lock, flags); + if ((~realirq) & irqreg || (~realdma) & dmareg) { + snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port); + snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg); + snd_printk(KERN_ERR "SB16 [0x%lx]: got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg); + return -ENODEV; + } + return 0; +} + +static const struct snd_pcm_ops snd_sb16_playback_ops = { + .open = snd_sb16_playback_open, + .close = snd_sb16_playback_close, + .prepare = snd_sb16_playback_prepare, + .trigger = snd_sb16_playback_trigger, + .pointer = snd_sb16_playback_pointer, +}; + +static const struct snd_pcm_ops snd_sb16_capture_ops = { + .open = snd_sb16_capture_open, + .close = snd_sb16_capture_close, + .prepare = snd_sb16_capture_prepare, + .trigger = snd_sb16_capture_trigger, + .pointer = snd_sb16_capture_pointer, +}; + +int snd_sb16dsp_pcm(struct snd_sb *chip, int device) +{ + struct snd_card *card = chip->card; + struct snd_pcm *pcm; + int err; + + if ((err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm)) < 0) + return err; + sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff); + pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; + pcm->private_data = chip; + chip->pcm = pcm; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops); + + if (chip->dma16 >= 0 && chip->dma8 != chip->dma16) + snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip)); + else + pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX; + + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, + card->dev, 64*1024, 128*1024); + return 0; +} + +const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction) +{ + return direction == SNDRV_PCM_STREAM_PLAYBACK ? + &snd_sb16_playback_ops : &snd_sb16_capture_ops; +} + +EXPORT_SYMBOL(snd_sb16dsp_pcm); +EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops); +EXPORT_SYMBOL(snd_sb16dsp_configure); +EXPORT_SYMBOL(snd_sb16dsp_interrupt); |