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