diff options
Diffstat (limited to 'sound/pci/echoaudio/echoaudio.c')
| -rw-r--r-- | sound/pci/echoaudio/echoaudio.c | 2260 |
1 files changed, 2260 insertions, 0 deletions
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c new file mode 100644 index 000000000..c70c3ac4e --- /dev/null +++ b/sound/pci/echoaudio/echoaudio.c @@ -0,0 +1,2260 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ALSA driver for Echoaudio soundcards. + * Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it> + * Copyright (C) 2020 Mark Hills <mark@xwax.org> + */ + +#include <linux/module.h> + +MODULE_AUTHOR("Giuliano Pochini <pochini@shiny.it>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Echoaudio " ECHOCARD_NAME " soundcards driver"); +MODULE_DEVICE_TABLE(pci, snd_echo_ids); + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for " ECHOCARD_NAME " soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for " ECHOCARD_NAME " soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable " ECHOCARD_NAME " soundcard."); + +static const unsigned int channels_list[10] = {1, 2, 4, 6, 8, 10, 12, 14, 16, 999999}; +static const DECLARE_TLV_DB_SCALE(db_scale_output_gain, -12800, 100, 1); + + + +static int get_firmware(const struct firmware **fw_entry, + struct echoaudio *chip, const short fw_index) +{ + int err; + char name[30]; + +#ifdef CONFIG_PM_SLEEP + if (chip->fw_cache[fw_index]) { + dev_dbg(chip->card->dev, + "firmware requested: %s is cached\n", + card_fw[fw_index].data); + *fw_entry = chip->fw_cache[fw_index]; + return 0; + } +#endif + + dev_dbg(chip->card->dev, + "firmware requested: %s\n", card_fw[fw_index].data); + snprintf(name, sizeof(name), "ea/%s", card_fw[fw_index].data); + err = request_firmware(fw_entry, name, &chip->pci->dev); + if (err < 0) + dev_err(chip->card->dev, + "get_firmware(): Firmware not available (%d)\n", err); +#ifdef CONFIG_PM_SLEEP + else + chip->fw_cache[fw_index] = *fw_entry; +#endif + return err; +} + + + +static void free_firmware(const struct firmware *fw_entry, + struct echoaudio *chip) +{ +#ifdef CONFIG_PM_SLEEP + dev_dbg(chip->card->dev, "firmware not released (kept in cache)\n"); +#else + release_firmware(fw_entry); +#endif +} + + + +static void free_firmware_cache(struct echoaudio *chip) +{ +#ifdef CONFIG_PM_SLEEP + int i; + + for (i = 0; i < 8 ; i++) + if (chip->fw_cache[i]) { + release_firmware(chip->fw_cache[i]); + dev_dbg(chip->card->dev, "release_firmware(%d)\n", i); + } + +#endif +} + + + +/****************************************************************************** + PCM interface +******************************************************************************/ + +static void audiopipe_free(struct snd_pcm_runtime *runtime) +{ + struct audiopipe *pipe = runtime->private_data; + + if (pipe->sgpage.area) + snd_dma_free_pages(&pipe->sgpage); + kfree(pipe); +} + + + +static int hw_rule_capture_format_by_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_mask fmt; + + snd_mask_any(&fmt); + +#ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32 + /* >=2 channels cannot be S32_BE */ + if (c->min == 2) { + fmt.bits[0] &= ~SNDRV_PCM_FMTBIT_S32_BE; + return snd_mask_refine(f, &fmt); + } +#endif + /* > 2 channels cannot be U8 and S32_BE */ + if (c->min > 2) { + fmt.bits[0] &= ~(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_BE); + return snd_mask_refine(f, &fmt); + } + /* Mono is ok with any format */ + return 0; +} + + + +static int hw_rule_capture_channels_by_format(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_interval ch; + + snd_interval_any(&ch); + + /* S32_BE is mono (and stereo) only */ + if (f->bits[0] == SNDRV_PCM_FMTBIT_S32_BE) { + ch.min = 1; +#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32 + ch.max = 2; +#else + ch.max = 1; +#endif + ch.integer = 1; + return snd_interval_refine(c, &ch); + } + /* U8 can be only mono or stereo */ + if (f->bits[0] == SNDRV_PCM_FMTBIT_U8) { + ch.min = 1; + ch.max = 2; + ch.integer = 1; + return snd_interval_refine(c, &ch); + } + /* S16_LE, S24_3LE and S32_LE support any number of channels. */ + return 0; +} + + + +static int hw_rule_playback_format_by_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_mask fmt; + u64 fmask; + snd_mask_any(&fmt); + + fmask = fmt.bits[0] + ((u64)fmt.bits[1] << 32); + + /* >2 channels must be S16_LE, S24_3LE or S32_LE */ + if (c->min > 2) { + fmask &= SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S24_3LE | + SNDRV_PCM_FMTBIT_S32_LE; + /* 1 channel must be S32_BE or S32_LE */ + } else if (c->max == 1) + fmask &= SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE; +#ifndef ECHOCARD_HAS_STEREO_BIG_ENDIAN32 + /* 2 channels cannot be S32_BE */ + else if (c->min == 2 && c->max == 2) + fmask &= ~SNDRV_PCM_FMTBIT_S32_BE; +#endif + else + return 0; + + fmt.bits[0] &= (u32)fmask; + fmt.bits[1] &= (u32)(fmask >> 32); + return snd_mask_refine(f, &fmt); +} + + + +static int hw_rule_playback_channels_by_format(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_interval ch; + u64 fmask; + + snd_interval_any(&ch); + ch.integer = 1; + fmask = f->bits[0] + ((u64)f->bits[1] << 32); + + /* S32_BE is mono (and stereo) only */ + if (fmask == SNDRV_PCM_FMTBIT_S32_BE) { + ch.min = 1; +#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32 + ch.max = 2; +#else + ch.max = 1; +#endif + /* U8 is stereo only */ + } else if (fmask == SNDRV_PCM_FMTBIT_U8) + ch.min = ch.max = 2; + /* S16_LE and S24_3LE must be at least stereo */ + else if (!(fmask & ~(SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S24_3LE))) + ch.min = 2; + else + return 0; + + return snd_interval_refine(c, &ch); +} + + + +/* Since the sample rate is a global setting, do allow the user to change the +sample rate only if there is only one pcm device open. */ +static int hw_rule_sample_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *rate = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_RATE); + struct echoaudio *chip = rule->private; + struct snd_interval fixed; + int err; + + mutex_lock(&chip->mode_mutex); + + if (chip->can_set_rate) { + err = 0; + } else { + snd_interval_any(&fixed); + fixed.min = fixed.max = chip->sample_rate; + err = snd_interval_refine(rate, &fixed); + } + + mutex_unlock(&chip->mode_mutex); + return err; +} + + +static int pcm_open(struct snd_pcm_substream *substream, + signed char max_channels) +{ + struct echoaudio *chip; + struct snd_pcm_runtime *runtime; + struct audiopipe *pipe; + int err, i; + + if (max_channels <= 0) + return -EAGAIN; + + chip = snd_pcm_substream_chip(substream); + runtime = substream->runtime; + + pipe = kzalloc(sizeof(struct audiopipe), GFP_KERNEL); + if (!pipe) + return -ENOMEM; + pipe->index = -1; /* Not configured yet */ + + /* Set up hw capabilities and contraints */ + memcpy(&pipe->hw, &pcm_hardware_skel, sizeof(struct snd_pcm_hardware)); + dev_dbg(chip->card->dev, "max_channels=%d\n", max_channels); + pipe->constr.list = channels_list; + pipe->constr.mask = 0; + for (i = 0; channels_list[i] <= max_channels; i++); + pipe->constr.count = i; + if (pipe->hw.channels_max > max_channels) + pipe->hw.channels_max = max_channels; + if (chip->digital_mode == DIGITAL_MODE_ADAT) { + pipe->hw.rate_max = 48000; + pipe->hw.rates &= SNDRV_PCM_RATE_8000_48000; + } + + runtime->hw = pipe->hw; + runtime->private_data = pipe; + runtime->private_free = audiopipe_free; + snd_pcm_set_sync(substream); + + /* Only mono and any even number of channels are allowed */ + err = snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &pipe->constr); + if (err < 0) + return err; + + /* All periods should have the same size */ + err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) + return err; + + /* The hw accesses memory in chunks 32 frames long and they should be + 32-bytes-aligned. It's not a requirement, but it seems that IRQs are + generated with a resolution of 32 frames. Thus we need the following */ + err = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 32); + if (err < 0) + return err; + err = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32); + if (err < 0) + return err; + + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + hw_rule_sample_rate, chip, + SNDRV_PCM_HW_PARAM_RATE, -1); + if (err < 0) + return err; + + /* Allocate a page for the scatter-gather list */ + err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, + &chip->pci->dev, + PAGE_SIZE, &pipe->sgpage); + if (err < 0) { + dev_err(chip->card->dev, "s-g list allocation failed\n"); + return err; + } + + /* + * Sole ownership required to set the rate + */ + + dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d", + chip->opencount, chip->can_set_rate, chip->rate_set); + + chip->opencount++; + if (chip->opencount > 1 && chip->rate_set) + chip->can_set_rate = 0; + + return 0; +} + + + +static int pcm_analog_in_open(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + int err; + + err = pcm_open(substream, + num_analog_busses_in(chip) - substream->number); + if (err < 0) + return err; + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_capture_channels_by_format, NULL, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (err < 0) + return err; + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_capture_format_by_channels, NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) + return err; + + return 0; +} + + + +static int pcm_analog_out_open(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + int max_channels, err; + +#ifdef ECHOCARD_HAS_VMIXER + max_channels = num_pipes_out(chip); +#else + max_channels = num_analog_busses_out(chip); +#endif + err = pcm_open(substream, max_channels - substream->number); + if (err < 0) + return err; + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_playback_channels_by_format, + NULL, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (err < 0) + return err; + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_playback_format_by_channels, + NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) + return err; + + return 0; +} + + + +#ifdef ECHOCARD_HAS_DIGITAL_IO + +static int pcm_digital_in_open(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + int err, max_channels; + + max_channels = num_digital_busses_in(chip) - substream->number; + mutex_lock(&chip->mode_mutex); + if (chip->digital_mode == DIGITAL_MODE_ADAT) + err = pcm_open(substream, max_channels); + else /* If the card has ADAT, subtract the 6 channels + * that S/PDIF doesn't have + */ + err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT); + + if (err < 0) + goto din_exit; + + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_capture_channels_by_format, NULL, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (err < 0) + goto din_exit; + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_capture_format_by_channels, NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) + goto din_exit; + +din_exit: + mutex_unlock(&chip->mode_mutex); + return err; +} + + + +#ifndef ECHOCARD_HAS_VMIXER /* See the note in snd_echo_new_pcm() */ + +static int pcm_digital_out_open(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + int err, max_channels; + + max_channels = num_digital_busses_out(chip) - substream->number; + mutex_lock(&chip->mode_mutex); + if (chip->digital_mode == DIGITAL_MODE_ADAT) + err = pcm_open(substream, max_channels); + else /* If the card has ADAT, subtract the 6 channels + * that S/PDIF doesn't have + */ + err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT); + + if (err < 0) + goto dout_exit; + + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_playback_channels_by_format, + NULL, SNDRV_PCM_HW_PARAM_FORMAT, + -1); + if (err < 0) + goto dout_exit; + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_playback_format_by_channels, + NULL, SNDRV_PCM_HW_PARAM_CHANNELS, + -1); + if (err < 0) + goto dout_exit; + +dout_exit: + mutex_unlock(&chip->mode_mutex); + return err; +} + +#endif /* !ECHOCARD_HAS_VMIXER */ + +#endif /* ECHOCARD_HAS_DIGITAL_IO */ + + + +static int pcm_close(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + + /* Nothing to do here. Audio is already off and pipe will be + * freed by its callback + */ + + mutex_lock(&chip->mode_mutex); + + dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d", + chip->opencount, chip->can_set_rate, chip->rate_set); + + chip->opencount--; + + switch (chip->opencount) { + case 1: + chip->can_set_rate = 1; + break; + + case 0: + chip->rate_set = 0; + break; + } + + mutex_unlock(&chip->mode_mutex); + return 0; +} + + + +/* Channel allocation and scatter-gather list setup */ +static int init_engine(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params, + int pipe_index, int interleave) +{ + struct echoaudio *chip; + int err, per, rest, page, edge, offs; + struct audiopipe *pipe; + + chip = snd_pcm_substream_chip(substream); + pipe = (struct audiopipe *) substream->runtime->private_data; + + /* Sets up che hardware. If it's already initialized, reset and + * redo with the new parameters + */ + spin_lock_irq(&chip->lock); + if (pipe->index >= 0) { + dev_dbg(chip->card->dev, "hwp_ie free(%d)\n", pipe->index); + err = free_pipes(chip, pipe); + snd_BUG_ON(err); + chip->substream[pipe->index] = NULL; + } + + err = allocate_pipes(chip, pipe, pipe_index, interleave); + if (err < 0) { + spin_unlock_irq(&chip->lock); + dev_err(chip->card->dev, "allocate_pipes(%d) err=%d\n", + pipe_index, err); + return err; + } + spin_unlock_irq(&chip->lock); + dev_dbg(chip->card->dev, "allocate_pipes()=%d\n", pipe_index); + + dev_dbg(chip->card->dev, + "pcm_hw_params (bufsize=%dB periods=%d persize=%dB)\n", + params_buffer_bytes(hw_params), params_periods(hw_params), + params_period_bytes(hw_params)); + + sglist_init(chip, pipe); + edge = PAGE_SIZE; + for (offs = page = per = 0; offs < params_buffer_bytes(hw_params); + per++) { + rest = params_period_bytes(hw_params); + if (offs + rest > params_buffer_bytes(hw_params)) + rest = params_buffer_bytes(hw_params) - offs; + while (rest) { + dma_addr_t addr; + addr = snd_pcm_sgbuf_get_addr(substream, offs); + if (rest <= edge - offs) { + sglist_add_mapping(chip, pipe, addr, rest); + sglist_add_irq(chip, pipe); + offs += rest; + rest = 0; + } else { + sglist_add_mapping(chip, pipe, addr, + edge - offs); + rest -= edge - offs; + offs = edge; + } + if (offs == edge) { + edge += PAGE_SIZE; + page++; + } + } + } + + /* Close the ring buffer */ + sglist_wrap(chip, pipe); + + /* This stuff is used by the irq handler, so it must be + * initialized before chip->substream + */ + pipe->last_period = 0; + pipe->last_counter = 0; + pipe->position = 0; + smp_wmb(); + chip->substream[pipe_index] = substream; + chip->rate_set = 1; + spin_lock_irq(&chip->lock); + set_sample_rate(chip, hw_params->rate_num / hw_params->rate_den); + spin_unlock_irq(&chip->lock); + return 0; +} + + + +static int pcm_analog_in_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + + return init_engine(substream, hw_params, px_analog_in(chip) + + substream->number, params_channels(hw_params)); +} + + + +static int pcm_analog_out_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + return init_engine(substream, hw_params, substream->number, + params_channels(hw_params)); +} + + + +#ifdef ECHOCARD_HAS_DIGITAL_IO + +static int pcm_digital_in_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + + return init_engine(substream, hw_params, px_digital_in(chip) + + substream->number, params_channels(hw_params)); +} + + + +#ifndef ECHOCARD_HAS_VMIXER /* See the note in snd_echo_new_pcm() */ +static int pcm_digital_out_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + + return init_engine(substream, hw_params, px_digital_out(chip) + + substream->number, params_channels(hw_params)); +} +#endif /* !ECHOCARD_HAS_VMIXER */ + +#endif /* ECHOCARD_HAS_DIGITAL_IO */ + + + +static int pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip; + struct audiopipe *pipe; + + chip = snd_pcm_substream_chip(substream); + pipe = (struct audiopipe *) substream->runtime->private_data; + + spin_lock_irq(&chip->lock); + if (pipe->index >= 0) { + dev_dbg(chip->card->dev, "pcm_hw_free(%d)\n", pipe->index); + free_pipes(chip, pipe); + chip->substream[pipe->index] = NULL; + pipe->index = -1; + } + spin_unlock_irq(&chip->lock); + + return 0; +} + + + +static int pcm_prepare(struct snd_pcm_substream *substream) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct audioformat format; + int pipe_index = ((struct audiopipe *)runtime->private_data)->index; + + dev_dbg(chip->card->dev, "Prepare rate=%d format=%d channels=%d\n", + runtime->rate, runtime->format, runtime->channels); + format.interleave = runtime->channels; + format.data_are_bigendian = 0; + format.mono_to_stereo = 0; + switch (runtime->format) { + case SNDRV_PCM_FORMAT_U8: + format.bits_per_sample = 8; + break; + case SNDRV_PCM_FORMAT_S16_LE: + format.bits_per_sample = 16; + break; + case SNDRV_PCM_FORMAT_S24_3LE: + format.bits_per_sample = 24; + break; + case SNDRV_PCM_FORMAT_S32_BE: + format.data_are_bigendian = 1; + fallthrough; + case SNDRV_PCM_FORMAT_S32_LE: + format.bits_per_sample = 32; + break; + default: + dev_err(chip->card->dev, + "Prepare error: unsupported format %d\n", + runtime->format); + return -EINVAL; + } + + if (snd_BUG_ON(pipe_index >= px_num(chip))) + return -EINVAL; + + /* + * We passed checks we can do independently; now take + * exclusive control + */ + + spin_lock_irq(&chip->lock); + + if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) { + spin_unlock_irq(&chip->lock); + return -EINVAL; + } + + set_audio_format(chip, pipe_index, &format); + spin_unlock_irq(&chip->lock); + + return 0; +} + + + +static int pcm_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct echoaudio *chip = snd_pcm_substream_chip(substream); + struct audiopipe *pipe; + int i, err; + u32 channelmask = 0; + struct snd_pcm_substream *s; + + snd_pcm_group_for_each_entry(s, substream) { + for (i = 0; i < DSP_MAXPIPES; i++) { + if (s == chip->substream[i]) { + channelmask |= 1 << i; + snd_pcm_trigger_done(s, substream); + } + } + } + + spin_lock(&chip->lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + for (i = 0; i < DSP_MAXPIPES; i++) { + if (channelmask & (1 << i)) { + pipe = chip->substream[i]->runtime->private_data; + switch (pipe->state) { + case PIPE_STATE_STOPPED: + pipe->last_period = 0; + pipe->last_counter = 0; + pipe->position = 0; + *pipe->dma_counter = 0; + fallthrough; + case PIPE_STATE_PAUSED: + pipe->state = PIPE_STATE_STARTED; + break; + case PIPE_STATE_STARTED: + break; + } + } + } + err = start_transport(chip, channelmask, + chip->pipe_cyclic_mask); + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_STOP: + for (i = 0; i < DSP_MAXPIPES; i++) { + if (channelmask & (1 << i)) { + pipe = chip->substream[i]->runtime->private_data; + pipe->state = PIPE_STATE_STOPPED; + } + } + err = stop_transport(chip, channelmask); + break; + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + for (i = 0; i < DSP_MAXPIPES; i++) { + if (channelmask & (1 << i)) { + pipe = chip->substream[i]->runtime->private_data; + pipe->state = PIPE_STATE_PAUSED; + } + } + err = pause_transport(chip, channelmask); + break; + default: + err = -EINVAL; + } + spin_unlock(&chip->lock); + return err; +} + + + +static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct audiopipe *pipe = runtime->private_data; + u32 counter, step; + + /* + * IRQ handling runs concurrently. Do not share tracking of + * counter with it, which would race or require locking + */ + + counter = le32_to_cpu(*pipe->dma_counter); /* presumed atomic */ + + step = counter - pipe->last_counter; /* handles wrapping */ + pipe->last_counter = counter; + + /* counter doesn't neccessarily wrap on a multiple of + * buffer_size, so can't derive the position; must + * accumulate */ + + pipe->position += step; + pipe->position %= frames_to_bytes(runtime, runtime->buffer_size); /* wrap */ + + return bytes_to_frames(runtime, pipe->position); +} + + + +/* pcm *_ops structures */ +static const struct snd_pcm_ops analog_playback_ops = { + .open = pcm_analog_out_open, + .close = pcm_close, + .hw_params = pcm_analog_out_hw_params, + .hw_free = pcm_hw_free, + .prepare = pcm_prepare, + .trigger = pcm_trigger, + .pointer = pcm_pointer, +}; +static const struct snd_pcm_ops analog_capture_ops = { + .open = pcm_analog_in_open, + .close = pcm_close, + .hw_params = pcm_analog_in_hw_params, + .hw_free = pcm_hw_free, + .prepare = pcm_prepare, + .trigger = pcm_trigger, + .pointer = pcm_pointer, +}; +#ifdef ECHOCARD_HAS_DIGITAL_IO +#ifndef ECHOCARD_HAS_VMIXER +static const struct snd_pcm_ops digital_playback_ops = { + .open = pcm_digital_out_open, + .close = pcm_close, + .hw_params = pcm_digital_out_hw_params, + .hw_free = pcm_hw_free, + .prepare = pcm_prepare, + .trigger = pcm_trigger, + .pointer = pcm_pointer, +}; +#endif /* !ECHOCARD_HAS_VMIXER */ +static const struct snd_pcm_ops digital_capture_ops = { + .open = pcm_digital_in_open, + .close = pcm_close, + .hw_params = pcm_digital_in_hw_params, + .hw_free = pcm_hw_free, + .prepare = pcm_prepare, + .trigger = pcm_trigger, + .pointer = pcm_pointer, +}; +#endif /* ECHOCARD_HAS_DIGITAL_IO */ + + + +/* Preallocate memory only for the first substream because it's the most + * used one + */ +static void snd_echo_preallocate_pages(struct snd_pcm *pcm, struct device *dev) +{ + struct snd_pcm_substream *ss; + int stream; + + for (stream = 0; stream < 2; stream++) + for (ss = pcm->streams[stream].substream; ss; ss = ss->next) + snd_pcm_set_managed_buffer(ss, SNDRV_DMA_TYPE_DEV_SG, + dev, + ss->number ? 0 : 128<<10, + 256<<10); +} + + + +/*<--snd_echo_probe() */ +static int snd_echo_new_pcm(struct echoaudio *chip) +{ + struct snd_pcm *pcm; + int err; + +#ifdef ECHOCARD_HAS_VMIXER + /* This card has a Vmixer, that is there is no direct mapping from PCM + streams to physical outputs. The user can mix the streams as he wishes + via control interface and it's possible to send any stream to any + output, thus it makes no sense to keep analog and digital outputs + separated */ + + /* PCM#0 Virtual outputs and analog inputs */ + err = snd_pcm_new(chip->card, "PCM", 0, num_pipes_out(chip), + num_analog_busses_in(chip), &pcm); + if (err < 0) + return err; + pcm->private_data = chip; + chip->analog_pcm = pcm; + strcpy(pcm->name, chip->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops); + snd_echo_preallocate_pages(pcm, &chip->pci->dev); + +#ifdef ECHOCARD_HAS_DIGITAL_IO + /* PCM#1 Digital inputs, no outputs */ + err = snd_pcm_new(chip->card, "Digital PCM", 1, 0, + num_digital_busses_in(chip), &pcm); + if (err < 0) + return err; + pcm->private_data = chip; + chip->digital_pcm = pcm; + strcpy(pcm->name, chip->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops); + snd_echo_preallocate_pages(pcm, &chip->pci->dev); +#endif /* ECHOCARD_HAS_DIGITAL_IO */ + +#else /* ECHOCARD_HAS_VMIXER */ + + /* The card can manage substreams formed by analog and digital channels + at the same time, but I prefer to keep analog and digital channels + separated, because that mixed thing is confusing and useless. So we + register two PCM devices: */ + + /* PCM#0 Analog i/o */ + err = snd_pcm_new(chip->card, "Analog PCM", 0, + num_analog_busses_out(chip), + num_analog_busses_in(chip), &pcm); + if (err < 0) + return err; + pcm->private_data = chip; + chip->analog_pcm = pcm; + strcpy(pcm->name, chip->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops); + snd_echo_preallocate_pages(pcm, &chip->pci->dev); + +#ifdef ECHOCARD_HAS_DIGITAL_IO + /* PCM#1 Digital i/o */ + err = snd_pcm_new(chip->card, "Digital PCM", 1, + num_digital_busses_out(chip), + num_digital_busses_in(chip), &pcm); + if (err < 0) + return err; + pcm->private_data = chip; + chip->digital_pcm = pcm; + strcpy(pcm->name, chip->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &digital_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops); + snd_echo_preallocate_pages(pcm, &chip->pci->dev); +#endif /* ECHOCARD_HAS_DIGITAL_IO */ + +#endif /* ECHOCARD_HAS_VMIXER */ + + return 0; +} + + + + +/****************************************************************************** + Control interface +******************************************************************************/ + +#if !defined(ECHOCARD_HAS_VMIXER) || defined(ECHOCARD_HAS_LINE_OUT_GAIN) + +/******************* PCM output volume *******************/ +static int snd_echo_output_gain_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = num_busses_out(chip); + uinfo->value.integer.min = ECHOGAIN_MINOUT; + uinfo->value.integer.max = ECHOGAIN_MAXOUT; + return 0; +} + +static int snd_echo_output_gain_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c; + + chip = snd_kcontrol_chip(kcontrol); + for (c = 0; c < num_busses_out(chip); c++) + ucontrol->value.integer.value[c] = chip->output_gain[c]; + return 0; +} + +static int snd_echo_output_gain_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c, changed, gain; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + spin_lock_irq(&chip->lock); + for (c = 0; c < num_busses_out(chip); c++) { + gain = ucontrol->value.integer.value[c]; + /* Ignore out of range values */ + if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT) + continue; + if (chip->output_gain[c] != gain) { + set_output_gain(chip, c, gain); + changed = 1; + } + } + if (changed) + update_output_line_level(chip); + spin_unlock_irq(&chip->lock); + return changed; +} + +#ifdef ECHOCARD_HAS_LINE_OUT_GAIN +/* On the Mia this one controls the line-out volume */ +static const struct snd_kcontrol_new snd_echo_line_output_gain = { + .name = "Line Playback Volume", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | + SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_output_gain_info, + .get = snd_echo_output_gain_get, + .put = snd_echo_output_gain_put, + .tlv = {.p = db_scale_output_gain}, +}; +#else +static const struct snd_kcontrol_new snd_echo_pcm_output_gain = { + .name = "PCM Playback Volume", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_output_gain_info, + .get = snd_echo_output_gain_get, + .put = snd_echo_output_gain_put, + .tlv = {.p = db_scale_output_gain}, +}; +#endif + +#endif /* !ECHOCARD_HAS_VMIXER || ECHOCARD_HAS_LINE_OUT_GAIN */ + + + +#ifdef ECHOCARD_HAS_INPUT_GAIN + +/******************* Analog input volume *******************/ +static int snd_echo_input_gain_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = num_analog_busses_in(chip); + uinfo->value.integer.min = ECHOGAIN_MININP; + uinfo->value.integer.max = ECHOGAIN_MAXINP; + return 0; +} + +static int snd_echo_input_gain_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c; + + chip = snd_kcontrol_chip(kcontrol); + for (c = 0; c < num_analog_busses_in(chip); c++) + ucontrol->value.integer.value[c] = chip->input_gain[c]; + return 0; +} + +static int snd_echo_input_gain_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c, gain, changed; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + spin_lock_irq(&chip->lock); + for (c = 0; c < num_analog_busses_in(chip); c++) { + gain = ucontrol->value.integer.value[c]; + /* Ignore out of range values */ + if (gain < ECHOGAIN_MININP || gain > ECHOGAIN_MAXINP) + continue; + if (chip->input_gain[c] != gain) { + set_input_gain(chip, c, gain); + changed = 1; + } + } + if (changed) + update_input_line_level(chip); + spin_unlock_irq(&chip->lock); + return changed; +} + +static const DECLARE_TLV_DB_SCALE(db_scale_input_gain, -2500, 50, 0); + +static const struct snd_kcontrol_new snd_echo_line_input_gain = { + .name = "Line Capture Volume", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_input_gain_info, + .get = snd_echo_input_gain_get, + .put = snd_echo_input_gain_put, + .tlv = {.p = db_scale_input_gain}, +}; + +#endif /* ECHOCARD_HAS_INPUT_GAIN */ + + + +#ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL + +/************ Analog output nominal level (+4dBu / -10dBV) ***************/ +static int snd_echo_output_nominal_info (struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = num_analog_busses_out(chip); + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int snd_echo_output_nominal_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c; + + chip = snd_kcontrol_chip(kcontrol); + for (c = 0; c < num_analog_busses_out(chip); c++) + ucontrol->value.integer.value[c] = chip->nominal_level[c]; + return 0; +} + +static int snd_echo_output_nominal_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c, changed; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + spin_lock_irq(&chip->lock); + for (c = 0; c < num_analog_busses_out(chip); c++) { + if (chip->nominal_level[c] != ucontrol->value.integer.value[c]) { + set_nominal_level(chip, c, + ucontrol->value.integer.value[c]); + changed = 1; + } + } + if (changed) + update_output_line_level(chip); + spin_unlock_irq(&chip->lock); + return changed; +} + +static const struct snd_kcontrol_new snd_echo_output_nominal_level = { + .name = "Line Playback Switch (-10dBV)", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .info = snd_echo_output_nominal_info, + .get = snd_echo_output_nominal_get, + .put = snd_echo_output_nominal_put, +}; + +#endif /* ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL */ + + + +#ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL + +/*************** Analog input nominal level (+4dBu / -10dBV) ***************/ +static int snd_echo_input_nominal_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = num_analog_busses_in(chip); + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int snd_echo_input_nominal_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c; + + chip = snd_kcontrol_chip(kcontrol); + for (c = 0; c < num_analog_busses_in(chip); c++) + ucontrol->value.integer.value[c] = + chip->nominal_level[bx_analog_in(chip) + c]; + return 0; +} + +static int snd_echo_input_nominal_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int c, changed; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + spin_lock_irq(&chip->lock); + for (c = 0; c < num_analog_busses_in(chip); c++) { + if (chip->nominal_level[bx_analog_in(chip) + c] != + ucontrol->value.integer.value[c]) { + set_nominal_level(chip, bx_analog_in(chip) + c, + ucontrol->value.integer.value[c]); + changed = 1; + } + } + if (changed) + update_output_line_level(chip); /* "Output" is not a mistake + * here. + */ + spin_unlock_irq(&chip->lock); + return changed; +} + +static const struct snd_kcontrol_new snd_echo_intput_nominal_level = { + .name = "Line Capture Switch (-10dBV)", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .info = snd_echo_input_nominal_info, + .get = snd_echo_input_nominal_get, + .put = snd_echo_input_nominal_put, +}; + +#endif /* ECHOCARD_HAS_INPUT_NOMINAL_LEVEL */ + + + +#ifdef ECHOCARD_HAS_MONITOR + +/******************* Monitor mixer *******************/ +static int snd_echo_mixer_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = ECHOGAIN_MINOUT; + uinfo->value.integer.max = ECHOGAIN_MAXOUT; + return 0; +} + +static int snd_echo_mixer_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip = snd_kcontrol_chip(kcontrol); + unsigned int out = ucontrol->id.index / num_busses_in(chip); + unsigned int in = ucontrol->id.index % num_busses_in(chip); + + if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS) + return -EINVAL; + + ucontrol->value.integer.value[0] = chip->monitor_gain[out][in]; + return 0; +} + +static int snd_echo_mixer_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int changed, gain; + unsigned int out, in; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + out = ucontrol->id.index / num_busses_in(chip); + in = ucontrol->id.index % num_busses_in(chip); + if (out >= ECHO_MAXAUDIOOUTPUTS || in >= ECHO_MAXAUDIOINPUTS) + return -EINVAL; + gain = ucontrol->value.integer.value[0]; + if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT) + return -EINVAL; + if (chip->monitor_gain[out][in] != gain) { + spin_lock_irq(&chip->lock); + set_monitor_gain(chip, out, in, gain); + update_output_line_level(chip); + spin_unlock_irq(&chip->lock); + changed = 1; + } + return changed; +} + +static struct snd_kcontrol_new snd_echo_monitor_mixer = { + .name = "Monitor Mixer Volume", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_mixer_info, + .get = snd_echo_mixer_get, + .put = snd_echo_mixer_put, + .tlv = {.p = db_scale_output_gain}, +}; + +#endif /* ECHOCARD_HAS_MONITOR */ + + + +#ifdef ECHOCARD_HAS_VMIXER + +/******************* Vmixer *******************/ +static int snd_echo_vmixer_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = ECHOGAIN_MINOUT; + uinfo->value.integer.max = ECHOGAIN_MAXOUT; + return 0; +} + +static int snd_echo_vmixer_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = + chip->vmixer_gain[ucontrol->id.index / num_pipes_out(chip)] + [ucontrol->id.index % num_pipes_out(chip)]; + return 0; +} + +static int snd_echo_vmixer_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int gain, changed; + short vch, out; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + out = ucontrol->id.index / num_pipes_out(chip); + vch = ucontrol->id.index % num_pipes_out(chip); + gain = ucontrol->value.integer.value[0]; + if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT) + return -EINVAL; + if (chip->vmixer_gain[out][vch] != ucontrol->value.integer.value[0]) { + spin_lock_irq(&chip->lock); + set_vmixer_gain(chip, out, vch, ucontrol->value.integer.value[0]); + update_vmixer_level(chip); + spin_unlock_irq(&chip->lock); + changed = 1; + } + return changed; +} + +static struct snd_kcontrol_new snd_echo_vmixer = { + .name = "VMixer Volume", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_vmixer_info, + .get = snd_echo_vmixer_get, + .put = snd_echo_vmixer_put, + .tlv = {.p = db_scale_output_gain}, +}; + +#endif /* ECHOCARD_HAS_VMIXER */ + + + +#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH + +/******************* Digital mode switch *******************/ +static int snd_echo_digital_mode_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static const char * const names[4] = { + "S/PDIF Coaxial", "S/PDIF Optical", "ADAT Optical", + "S/PDIF Cdrom" + }; + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + return snd_ctl_enum_info(uinfo, 1, chip->num_digital_modes, names); +} + +static int snd_echo_digital_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int i, mode; + + chip = snd_kcontrol_chip(kcontrol); + mode = chip->digital_mode; + for (i = chip->num_digital_modes - 1; i >= 0; i--) + if (mode == chip->digital_mode_list[i]) { + ucontrol->value.enumerated.item[0] = i; + break; + } + return 0; +} + +static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int changed; + unsigned short emode, dmode; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + + emode = ucontrol->value.enumerated.item[0]; + if (emode >= chip->num_digital_modes) + return -EINVAL; + dmode = chip->digital_mode_list[emode]; + + if (dmode != chip->digital_mode) { + /* mode_mutex is required to make this operation atomic wrt + pcm_digital_*_open() and set_input_clock() functions. */ + mutex_lock(&chip->mode_mutex); + + /* Do not allow the user to change the digital mode when a pcm + device is open because it also changes the number of channels + and the allowed sample rates */ + if (chip->opencount) { + changed = -EAGAIN; + } else { + changed = set_digital_mode(chip, dmode); + /* If we had to change the clock source, report it */ + if (changed > 0 && chip->clock_src_ctl) { + snd_ctl_notify(chip->card, + SNDRV_CTL_EVENT_MASK_VALUE, + &chip->clock_src_ctl->id); + dev_dbg(chip->card->dev, + "SDM() =%d\n", changed); + } + if (changed >= 0) + changed = 1; /* No errors */ + } + mutex_unlock(&chip->mode_mutex); + } + return changed; +} + +static const struct snd_kcontrol_new snd_echo_digital_mode_switch = { + .name = "Digital mode Switch", + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .info = snd_echo_digital_mode_info, + .get = snd_echo_digital_mode_get, + .put = snd_echo_digital_mode_put, +}; + +#endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */ + + + +#ifdef ECHOCARD_HAS_DIGITAL_IO + +/******************* S/PDIF mode switch *******************/ +static int snd_echo_spdif_mode_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static const char * const names[2] = {"Consumer", "Professional"}; + + return snd_ctl_enum_info(uinfo, 1, 2, names); +} + +static int snd_echo_spdif_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.enumerated.item[0] = !!chip->professional_spdif; + return 0; +} + +static int snd_echo_spdif_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int mode; + + chip = snd_kcontrol_chip(kcontrol); + mode = !!ucontrol->value.enumerated.item[0]; + if (mode != chip->professional_spdif) { + spin_lock_irq(&chip->lock); + set_professional_spdif(chip, mode); + spin_unlock_irq(&chip->lock); + return 1; + } + return 0; +} + +static const struct snd_kcontrol_new snd_echo_spdif_mode_switch = { + .name = "S/PDIF mode Switch", + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .info = snd_echo_spdif_mode_info, + .get = snd_echo_spdif_mode_get, + .put = snd_echo_spdif_mode_put, +}; + +#endif /* ECHOCARD_HAS_DIGITAL_IO */ + + + +#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK + +/******************* Select input clock source *******************/ +static int snd_echo_clock_source_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static const char * const names[8] = { + "Internal", "Word", "Super", "S/PDIF", "ADAT", "ESync", + "ESync96", "MTC" + }; + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + return snd_ctl_enum_info(uinfo, 1, chip->num_clock_sources, names); +} + +static int snd_echo_clock_source_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int i, clock; + + chip = snd_kcontrol_chip(kcontrol); + clock = chip->input_clock; + + for (i = 0; i < chip->num_clock_sources; i++) + if (clock == chip->clock_source_list[i]) + ucontrol->value.enumerated.item[0] = i; + + return 0; +} + +static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int changed; + unsigned int eclock, dclock; + + changed = 0; + chip = snd_kcontrol_chip(kcontrol); + eclock = ucontrol->value.enumerated.item[0]; + if (eclock >= chip->input_clock_types) + return -EINVAL; + dclock = chip->clock_source_list[eclock]; + if (chip->input_clock != dclock) { + mutex_lock(&chip->mode_mutex); + spin_lock_irq(&chip->lock); + changed = set_input_clock(chip, dclock); + if (!changed) + changed = 1; /* no errors */ + spin_unlock_irq(&chip->lock); + mutex_unlock(&chip->mode_mutex); + } + + if (changed < 0) + dev_dbg(chip->card->dev, + "seticlk val%d err 0x%x\n", dclock, changed); + + return changed; +} + +static const struct snd_kcontrol_new snd_echo_clock_source_switch = { + .name = "Sample Clock Source", + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .info = snd_echo_clock_source_info, + .get = snd_echo_clock_source_get, + .put = snd_echo_clock_source_put, +}; + +#endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */ + + + +#ifdef ECHOCARD_HAS_PHANTOM_POWER + +/******************* Phantom power switch *******************/ +#define snd_echo_phantom_power_info snd_ctl_boolean_mono_info + +static int snd_echo_phantom_power_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip = snd_kcontrol_chip(kcontrol); + + ucontrol->value.integer.value[0] = chip->phantom_power; + return 0; +} + +static int snd_echo_phantom_power_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip = snd_kcontrol_chip(kcontrol); + int power, changed = 0; + + power = !!ucontrol->value.integer.value[0]; + if (chip->phantom_power != power) { + spin_lock_irq(&chip->lock); + changed = set_phantom_power(chip, power); + spin_unlock_irq(&chip->lock); + if (changed == 0) + changed = 1; /* no errors */ + } + return changed; +} + +static const struct snd_kcontrol_new snd_echo_phantom_power_switch = { + .name = "Phantom power Switch", + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .info = snd_echo_phantom_power_info, + .get = snd_echo_phantom_power_get, + .put = snd_echo_phantom_power_put, +}; + +#endif /* ECHOCARD_HAS_PHANTOM_POWER */ + + + +#ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE + +/******************* Digital input automute switch *******************/ +#define snd_echo_automute_info snd_ctl_boolean_mono_info + +static int snd_echo_automute_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip = snd_kcontrol_chip(kcontrol); + + ucontrol->value.integer.value[0] = chip->digital_in_automute; + return 0; +} + +static int snd_echo_automute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip = snd_kcontrol_chip(kcontrol); + int automute, changed = 0; + + automute = !!ucontrol->value.integer.value[0]; + if (chip->digital_in_automute != automute) { + spin_lock_irq(&chip->lock); + changed = set_input_auto_mute(chip, automute); + spin_unlock_irq(&chip->lock); + if (changed == 0) + changed = 1; /* no errors */ + } + return changed; +} + +static const struct snd_kcontrol_new snd_echo_automute_switch = { + .name = "Digital Capture Switch (automute)", + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .info = snd_echo_automute_info, + .get = snd_echo_automute_get, + .put = snd_echo_automute_put, +}; + +#endif /* ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE */ + + + +/******************* VU-meters switch *******************/ +#define snd_echo_vumeters_switch_info snd_ctl_boolean_mono_info + +static int snd_echo_vumeters_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + spin_lock_irq(&chip->lock); + set_meters_on(chip, ucontrol->value.integer.value[0]); + spin_unlock_irq(&chip->lock); + return 1; +} + +static const struct snd_kcontrol_new snd_echo_vumeters_switch = { + .name = "VU-meters Switch", + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .access = SNDRV_CTL_ELEM_ACCESS_WRITE, + .info = snd_echo_vumeters_switch_info, + .put = snd_echo_vumeters_switch_put, +}; + + + +/***** Read VU-meters (input, output, analog and digital together) *****/ +static int snd_echo_vumeters_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 96; + uinfo->value.integer.min = ECHOGAIN_MINOUT; + uinfo->value.integer.max = 0; + return 0; +} + +static int snd_echo_vumeters_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + + chip = snd_kcontrol_chip(kcontrol); + get_audio_meters(chip, ucontrol->value.integer.value); + return 0; +} + +static const struct snd_kcontrol_new snd_echo_vumeters = { + .name = "VU-meters", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READ | + SNDRV_CTL_ELEM_ACCESS_VOLATILE | + SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_vumeters_info, + .get = snd_echo_vumeters_get, + .tlv = {.p = db_scale_output_gain}, +}; + + + +/*** Channels info - it exports informations about the number of channels ***/ +static int snd_echo_channels_info_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 6; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1 << ECHO_CLOCK_NUMBER; + return 0; +} + +static int snd_echo_channels_info_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct echoaudio *chip; + int detected, clocks, bit, src; + + chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = num_busses_in(chip); + ucontrol->value.integer.value[1] = num_analog_busses_in(chip); + ucontrol->value.integer.value[2] = num_busses_out(chip); + ucontrol->value.integer.value[3] = num_analog_busses_out(chip); + ucontrol->value.integer.value[4] = num_pipes_out(chip); + + /* Compute the bitmask of the currently valid input clocks */ + detected = detect_input_clocks(chip); + clocks = 0; + src = chip->num_clock_sources - 1; + for (bit = ECHO_CLOCK_NUMBER - 1; bit >= 0; bit--) + if (detected & (1 << bit)) + for (; src >= 0; src--) + if (bit == chip->clock_source_list[src]) { + clocks |= 1 << src; + break; + } + ucontrol->value.integer.value[5] = clocks; + + return 0; +} + +static const struct snd_kcontrol_new snd_echo_channels_info = { + .name = "Channels info", + .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, + .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, + .info = snd_echo_channels_info_info, + .get = snd_echo_channels_info_get, +}; + + + + +/****************************************************************************** + IRQ Handling +******************************************************************************/ +/* Check if a period has elapsed since last interrupt + * + * Don't make any updates to state; PCM core handles this with the + * correct locks. + * + * \return true if a period has elapsed, otherwise false + */ +static bool period_has_elapsed(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct audiopipe *pipe = runtime->private_data; + u32 counter, step; + size_t period_bytes; + + if (pipe->state != PIPE_STATE_STARTED) + return false; + + period_bytes = frames_to_bytes(runtime, runtime->period_size); + + counter = le32_to_cpu(*pipe->dma_counter); /* presumed atomic */ + + step = counter - pipe->last_period; /* handles wrapping */ + step -= step % period_bytes; /* acknowledge whole periods only */ + + if (step == 0) + return false; /* haven't advanced a whole period yet */ + + pipe->last_period += step; /* used exclusively by us */ + return true; +} + +static irqreturn_t snd_echo_interrupt(int irq, void *dev_id) +{ + struct echoaudio *chip = dev_id; + int ss, st; + + spin_lock(&chip->lock); + st = service_irq(chip); + if (st < 0) { + spin_unlock(&chip->lock); + return IRQ_NONE; + } + /* The hardware doesn't tell us which substream caused the irq, + thus we have to check all running substreams. */ + for (ss = 0; ss < DSP_MAXPIPES; ss++) { + struct snd_pcm_substream *substream; + + substream = chip->substream[ss]; + if (substream && period_has_elapsed(substream)) { + spin_unlock(&chip->lock); + snd_pcm_period_elapsed(substream); + spin_lock(&chip->lock); + } + } + spin_unlock(&chip->lock); + +#ifdef ECHOCARD_HAS_MIDI + if (st > 0 && chip->midi_in) { + snd_rawmidi_receive(chip->midi_in, chip->midi_buffer, st); + dev_dbg(chip->card->dev, "rawmidi_iread=%d\n", st); + } +#endif + return IRQ_HANDLED; +} + + + + +/****************************************************************************** + Module construction / destruction +******************************************************************************/ + +static void snd_echo_free(struct snd_card *card) +{ + struct echoaudio *chip = card->private_data; + + if (chip->comm_page) + rest_in_peace(chip); + + if (chip->irq >= 0) + free_irq(chip->irq, chip); + + /* release chip data */ + free_firmware_cache(chip); +} + +/* <--snd_echo_probe() */ +static int snd_echo_create(struct snd_card *card, + struct pci_dev *pci) +{ + struct echoaudio *chip = card->private_data; + int err; + size_t sz; + + pci_write_config_byte(pci, PCI_LATENCY_TIMER, 0xC0); + + err = pcim_enable_device(pci); + if (err < 0) + return err; + pci_set_master(pci); + + /* Allocate chip if needed */ + spin_lock_init(&chip->lock); + chip->card = card; + chip->pci = pci; + chip->irq = -1; + chip->opencount = 0; + mutex_init(&chip->mode_mutex); + chip->can_set_rate = 1; + + /* PCI resource allocation */ + err = pci_request_regions(pci, ECHOCARD_NAME); + if (err < 0) + return err; + + chip->dsp_registers_phys = pci_resource_start(pci, 0); + sz = pci_resource_len(pci, 0); + if (sz > PAGE_SIZE) + sz = PAGE_SIZE; /* We map only the required part */ + + chip->dsp_registers = devm_ioremap(&pci->dev, chip->dsp_registers_phys, sz); + if (!chip->dsp_registers) { + dev_err(chip->card->dev, "ioremap failed\n"); + return -ENOMEM; + } + + if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED, + KBUILD_MODNAME, chip)) { + dev_err(chip->card->dev, "cannot grab irq\n"); + return -EBUSY; + } + chip->irq = pci->irq; + card->sync_irq = chip->irq; + dev_dbg(card->dev, "pci=%p irq=%d subdev=%04x Init hardware...\n", + chip->pci, chip->irq, chip->pci->subsystem_device); + + card->private_free = snd_echo_free; + + /* Create the DSP comm page - this is the area of memory used for most + of the communication with the DSP, which accesses it via bus mastering */ + chip->commpage_dma_buf = + snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV, + sizeof(struct comm_page)); + if (!chip->commpage_dma_buf) + return -ENOMEM; + chip->comm_page_phys = chip->commpage_dma_buf->addr; + chip->comm_page = (struct comm_page *)chip->commpage_dma_buf->area; + + err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device); + if (err >= 0) + err = set_mixer_defaults(chip); + if (err < 0) { + dev_err(card->dev, "init_hw err=%d\n", err); + return err; + } + + return 0; +} + +/* constructor */ +static int __snd_echo_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + struct snd_card *card; + struct echoaudio *chip; + char *dsp; + __maybe_unused int i; + int err; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + i = 0; + err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, + sizeof(*chip), &card); + if (err < 0) + return err; + chip = card->private_data; + + err = snd_echo_create(card, pci); + if (err < 0) + return err; + + strcpy(card->driver, "Echo_" ECHOCARD_NAME); + strcpy(card->shortname, chip->card_name); + + dsp = "56301"; + if (pci_id->device == 0x3410) + dsp = "56361"; + + sprintf(card->longname, "%s rev.%d (DSP%s) at 0x%lx irq %i", + card->shortname, pci_id->subdevice & 0x000f, dsp, + chip->dsp_registers_phys, chip->irq); + + err = snd_echo_new_pcm(chip); + if (err < 0) { + dev_err(chip->card->dev, "new pcm error %d\n", err); + return err; + } + +#ifdef ECHOCARD_HAS_MIDI + if (chip->has_midi) { /* Some Mia's do not have midi */ + err = snd_echo_midi_create(card, chip); + if (err < 0) { + dev_err(chip->card->dev, "new midi error %d\n", err); + return err; + } + } +#endif + +#ifdef ECHOCARD_HAS_VMIXER + snd_echo_vmixer.count = num_pipes_out(chip) * num_busses_out(chip); + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip)); + if (err < 0) + return err; +#ifdef ECHOCARD_HAS_LINE_OUT_GAIN + err = snd_ctl_add(chip->card, + snd_ctl_new1(&snd_echo_line_output_gain, chip)); + if (err < 0) + return err; +#endif +#else /* ECHOCARD_HAS_VMIXER */ + err = snd_ctl_add(chip->card, + snd_ctl_new1(&snd_echo_pcm_output_gain, chip)); + if (err < 0) + return err; +#endif /* ECHOCARD_HAS_VMIXER */ + +#ifdef ECHOCARD_HAS_INPUT_GAIN + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip)); + if (err < 0) + return err; +#endif + +#ifdef ECHOCARD_HAS_INPUT_NOMINAL_LEVEL + if (!chip->hasnt_input_nominal_level) { + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_intput_nominal_level, chip)); + if (err < 0) + return err; + } +#endif + +#ifdef ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_output_nominal_level, chip)); + if (err < 0) + return err; +#endif + + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters_switch, chip)); + if (err < 0) + return err; + + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vumeters, chip)); + if (err < 0) + return err; + +#ifdef ECHOCARD_HAS_MONITOR + snd_echo_monitor_mixer.count = num_busses_in(chip) * num_busses_out(chip); + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_monitor_mixer, chip)); + if (err < 0) + return err; +#endif + +#ifdef ECHOCARD_HAS_DIGITAL_IN_AUTOMUTE + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_automute_switch, chip)); + if (err < 0) + return err; +#endif + + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_channels_info, chip)); + if (err < 0) + return err; + +#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH + /* Creates a list of available digital modes */ + chip->num_digital_modes = 0; + for (i = 0; i < 6; i++) + if (chip->digital_modes & (1 << i)) + chip->digital_mode_list[chip->num_digital_modes++] = i; + + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_digital_mode_switch, chip)); + if (err < 0) + return err; +#endif /* ECHOCARD_HAS_DIGITAL_MODE_SWITCH */ + +#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK + /* Creates a list of available clock sources */ + chip->num_clock_sources = 0; + for (i = 0; i < 10; i++) + if (chip->input_clock_types & (1 << i)) + chip->clock_source_list[chip->num_clock_sources++] = i; + + if (chip->num_clock_sources > 1) { + chip->clock_src_ctl = snd_ctl_new1(&snd_echo_clock_source_switch, chip); + err = snd_ctl_add(chip->card, chip->clock_src_ctl); + if (err < 0) + return err; + } +#endif /* ECHOCARD_HAS_EXTERNAL_CLOCK */ + +#ifdef ECHOCARD_HAS_DIGITAL_IO + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_spdif_mode_switch, chip)); + if (err < 0) + return err; +#endif + +#ifdef ECHOCARD_HAS_PHANTOM_POWER + if (chip->has_phantom_power) { + err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_phantom_power_switch, chip)); + if (err < 0) + return err; + } +#endif + + err = snd_card_register(card); + if (err < 0) + return err; + dev_info(card->dev, "Card registered: %s\n", card->longname); + + pci_set_drvdata(pci, chip); + dev++; + return 0; +} + +static int snd_echo_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + return snd_card_free_on_error(&pci->dev, __snd_echo_probe(pci, pci_id)); +} + + +#if defined(CONFIG_PM_SLEEP) + +static int snd_echo_suspend(struct device *dev) +{ + struct echoaudio *chip = dev_get_drvdata(dev); + +#ifdef ECHOCARD_HAS_MIDI + /* This call can sleep */ + if (chip->midi_out) + snd_echo_midi_output_trigger(chip->midi_out, 0); +#endif + spin_lock_irq(&chip->lock); + if (wait_handshake(chip)) { + spin_unlock_irq(&chip->lock); + return -EIO; + } + clear_handshake(chip); + if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0) { + spin_unlock_irq(&chip->lock); + return -EIO; + } + spin_unlock_irq(&chip->lock); + + chip->dsp_code = NULL; + free_irq(chip->irq, chip); + chip->irq = -1; + chip->card->sync_irq = -1; + return 0; +} + + + +static int snd_echo_resume(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + struct echoaudio *chip = dev_get_drvdata(dev); + struct comm_page *commpage, *commpage_bak; + u32 pipe_alloc_mask; + int err; + + commpage = chip->comm_page; + commpage_bak = kmemdup(commpage, sizeof(*commpage), GFP_KERNEL); + if (commpage_bak == NULL) + return -ENOMEM; + + err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device); + if (err < 0) { + kfree(commpage_bak); + dev_err(dev, "resume init_hw err=%d\n", err); + return err; + } + + /* Temporarily set chip->pipe_alloc_mask=0 otherwise + * restore_dsp_settings() fails. + */ + pipe_alloc_mask = chip->pipe_alloc_mask; + chip->pipe_alloc_mask = 0; + err = restore_dsp_rettings(chip); + chip->pipe_alloc_mask = pipe_alloc_mask; + if (err < 0) { + kfree(commpage_bak); + return err; + } + + memcpy(&commpage->audio_format, &commpage_bak->audio_format, + sizeof(commpage->audio_format)); + memcpy(&commpage->sglist_addr, &commpage_bak->sglist_addr, + sizeof(commpage->sglist_addr)); + memcpy(&commpage->midi_output, &commpage_bak->midi_output, + sizeof(commpage->midi_output)); + kfree(commpage_bak); + + if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED, + KBUILD_MODNAME, chip)) { + dev_err(chip->card->dev, "cannot grab irq\n"); + return -EBUSY; + } + chip->irq = pci->irq; + chip->card->sync_irq = chip->irq; + dev_dbg(dev, "resume irq=%d\n", chip->irq); + +#ifdef ECHOCARD_HAS_MIDI + if (chip->midi_input_enabled) + enable_midi_input(chip, true); + if (chip->midi_out) + snd_echo_midi_output_trigger(chip->midi_out, 1); +#endif + + return 0; +} + +static SIMPLE_DEV_PM_OPS(snd_echo_pm, snd_echo_suspend, snd_echo_resume); +#define SND_ECHO_PM_OPS &snd_echo_pm +#else +#define SND_ECHO_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ + +/****************************************************************************** + Everything starts and ends here +******************************************************************************/ + +/* pci_driver definition */ +static struct pci_driver echo_driver = { + .name = KBUILD_MODNAME, + .id_table = snd_echo_ids, + .probe = snd_echo_probe, + .driver = { + .pm = SND_ECHO_PM_OPS, + }, +}; + +module_pci_driver(echo_driver); |