| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Driver for Sound Core PDAudioCF soundcards |
| * |
| * PCM part |
| * |
| * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz> |
| */ |
| |
| #include <linux/delay.h> |
| #include <sound/core.h> |
| #include <sound/asoundef.h> |
| #include "pdaudiocf.h" |
| |
| |
| /* |
| * clear the SRAM contents |
| */ |
| static int pdacf_pcm_clear_sram(struct snd_pdacf *chip) |
| { |
| int max_loop = 64 * 1024; |
| |
| while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) { |
| if (max_loop-- < 0) |
| return -EIO; |
| inw(chip->port + PDAUDIOCF_REG_MD); |
| } |
| return 0; |
| } |
| |
| /* |
| * pdacf_pcm_trigger - trigger callback for capture |
| */ |
| static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd) |
| { |
| struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| struct snd_pcm_runtime *runtime = subs->runtime; |
| int inc, ret = 0, rate; |
| unsigned short mask, val, tmp; |
| |
| if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE) |
| return -EBUSY; |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| chip->pcm_hwptr = 0; |
| chip->pcm_tdone = 0; |
| /* fall thru */ |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| mask = 0; |
| val = PDAUDIOCF_RECORD; |
| inc = 1; |
| rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| case SNDRV_PCM_TRIGGER_SUSPEND: |
| mask = PDAUDIOCF_RECORD; |
| val = 0; |
| inc = -1; |
| rate = 0; |
| break; |
| default: |
| return -EINVAL; |
| } |
| mutex_lock(&chip->reg_lock); |
| chip->pcm_running += inc; |
| tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); |
| if (chip->pcm_running) { |
| if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) { |
| chip->pcm_running -= inc; |
| ret = -EIO; |
| goto __end; |
| } |
| } |
| tmp &= ~mask; |
| tmp |= val; |
| pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp); |
| __end: |
| mutex_unlock(&chip->reg_lock); |
| snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE); |
| return ret; |
| } |
| |
| /* |
| * pdacf_pcm_hw_params - hw_params callback for playback and capture |
| */ |
| static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs, |
| struct snd_pcm_hw_params *hw_params) |
| { |
| return snd_pcm_lib_alloc_vmalloc_32_buffer |
| (subs, params_buffer_bytes(hw_params)); |
| } |
| |
| /* |
| * pdacf_pcm_hw_free - hw_free callback for playback and capture |
| */ |
| static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs) |
| { |
| return snd_pcm_lib_free_vmalloc_buffer(subs); |
| } |
| |
| /* |
| * pdacf_pcm_prepare - prepare callback for playback and capture |
| */ |
| static int pdacf_pcm_prepare(struct snd_pcm_substream *subs) |
| { |
| struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| struct snd_pcm_runtime *runtime = subs->runtime; |
| u16 val, nval, aval; |
| |
| if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE) |
| return -EBUSY; |
| |
| chip->pcm_channels = runtime->channels; |
| |
| chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0; |
| #ifdef SNDRV_LITTLE_ENDIAN |
| chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0; |
| #else |
| chip->pcm_swab = chip->pcm_little; |
| #endif |
| |
| if (snd_pcm_format_unsigned(runtime->format)) |
| chip->pcm_xor = 0x80008000; |
| |
| if (pdacf_pcm_clear_sram(chip) < 0) |
| return -EIO; |
| |
| val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR); |
| nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1); |
| switch (runtime->format) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| case SNDRV_PCM_FORMAT_S16_BE: |
| break; |
| default: /* 24-bit */ |
| nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1; |
| break; |
| } |
| aval = 0; |
| chip->pcm_sample = 4; |
| switch (runtime->format) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| case SNDRV_PCM_FORMAT_S16_BE: |
| aval = AK4117_DIF_16R; |
| chip->pcm_frame = 2; |
| chip->pcm_sample = 2; |
| break; |
| case SNDRV_PCM_FORMAT_S24_3LE: |
| case SNDRV_PCM_FORMAT_S24_3BE: |
| chip->pcm_sample = 3; |
| /* fall through */ |
| default: /* 24-bit */ |
| aval = AK4117_DIF_24R; |
| chip->pcm_frame = 3; |
| chip->pcm_xor &= 0xffff0000; |
| break; |
| } |
| |
| if (val != nval) { |
| snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval); |
| pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval); |
| } |
| |
| val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER); |
| val &= ~(PDAUDIOCF_IRQLVLEN1); |
| val |= PDAUDIOCF_IRQLVLEN0; |
| pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val); |
| |
| chip->pcm_size = runtime->buffer_size; |
| chip->pcm_period = runtime->period_size; |
| chip->pcm_area = runtime->dma_area; |
| |
| return 0; |
| } |
| |
| |
| /* |
| * capture hw information |
| */ |
| |
| static const struct snd_pcm_hardware pdacf_pcm_capture_hw = { |
| .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
| SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | |
| SNDRV_PCM_INFO_MMAP_VALID | |
| SNDRV_PCM_INFO_BATCH), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | |
| SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | |
| SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, |
| .rates = SNDRV_PCM_RATE_32000 | |
| SNDRV_PCM_RATE_44100 | |
| SNDRV_PCM_RATE_48000 | |
| SNDRV_PCM_RATE_88200 | |
| SNDRV_PCM_RATE_96000 | |
| SNDRV_PCM_RATE_176400 | |
| SNDRV_PCM_RATE_192000, |
| .rate_min = 32000, |
| .rate_max = 192000, |
| .channels_min = 1, |
| .channels_max = 2, |
| .buffer_bytes_max = (512*1024), |
| .period_bytes_min = 8*1024, |
| .period_bytes_max = (64*1024), |
| .periods_min = 2, |
| .periods_max = 128, |
| .fifo_size = 0, |
| }; |
| |
| |
| /* |
| * pdacf_pcm_capture_open - open callback for capture |
| */ |
| static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs) |
| { |
| struct snd_pcm_runtime *runtime = subs->runtime; |
| struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| |
| if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE) |
| return -EBUSY; |
| |
| runtime->hw = pdacf_pcm_capture_hw; |
| runtime->private_data = chip; |
| chip->pcm_substream = subs; |
| |
| return 0; |
| } |
| |
| /* |
| * pdacf_pcm_capture_close - close callback for capture |
| */ |
| static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs) |
| { |
| struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| |
| if (!chip) |
| return -EINVAL; |
| pdacf_reinit(chip, 0); |
| chip->pcm_substream = NULL; |
| return 0; |
| } |
| |
| |
| /* |
| * pdacf_pcm_capture_pointer - pointer callback for capture |
| */ |
| static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs) |
| { |
| struct snd_pdacf *chip = snd_pcm_substream_chip(subs); |
| return chip->pcm_hwptr; |
| } |
| |
| /* |
| * operators for PCM capture |
| */ |
| static const struct snd_pcm_ops pdacf_pcm_capture_ops = { |
| .open = pdacf_pcm_capture_open, |
| .close = pdacf_pcm_capture_close, |
| .ioctl = snd_pcm_lib_ioctl, |
| .hw_params = pdacf_pcm_hw_params, |
| .hw_free = pdacf_pcm_hw_free, |
| .prepare = pdacf_pcm_prepare, |
| .trigger = pdacf_pcm_trigger, |
| .pointer = pdacf_pcm_capture_pointer, |
| .page = snd_pcm_lib_get_vmalloc_page, |
| }; |
| |
| |
| /* |
| * snd_pdacf_pcm_new - create and initialize a pcm |
| */ |
| int snd_pdacf_pcm_new(struct snd_pdacf *chip) |
| { |
| struct snd_pcm *pcm; |
| int err; |
| |
| err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm); |
| if (err < 0) |
| return err; |
| |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops); |
| |
| pcm->private_data = chip; |
| pcm->info_flags = 0; |
| pcm->nonatomic = true; |
| strcpy(pcm->name, chip->card->shortname); |
| chip->pcm = pcm; |
| |
| err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream); |
| if (err < 0) |
| return err; |
| |
| return 0; |
| } |