diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/pci/emu10k1/emupcm.c | 1875 |
1 files changed, 1875 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c new file mode 100644 index 0000000000..7f4c1b38d6 --- /dev/null +++ b/sound/pci/emu10k1/emupcm.c @@ -0,0 +1,1875 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> + * Lee Revell <rlrevell@joe-job.com> + * James Courtier-Dutton <James@superbug.co.uk> + * Oswald Buddenhagen <oswald.buddenhagen@gmx.de> + * Creative Labs, Inc. + * + * Routines for control of EMU10K1 chips / PCM routines + */ + +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/time.h> +#include <linux/init.h> +#include <sound/core.h> +#include <sound/emu10k1.h> + +static void snd_emu10k1_pcm_interrupt(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *voice) +{ + struct snd_emu10k1_pcm *epcm; + + epcm = voice->epcm; + if (!epcm) + return; + if (epcm->substream == NULL) + return; +#if 0 + dev_dbg(emu->card->dev, + "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n", + epcm->substream->runtime->hw->pointer(emu, epcm->substream), + snd_pcm_lib_period_bytes(epcm->substream), + snd_pcm_lib_buffer_bytes(epcm->substream)); +#endif + snd_pcm_period_elapsed(epcm->substream); +} + +static void snd_emu10k1_pcm_ac97adc_interrupt(struct snd_emu10k1 *emu, + unsigned int status) +{ +#if 0 + if (status & IPR_ADCBUFHALFFULL) { + if (emu->pcm_capture_substream->runtime->mode == SNDRV_PCM_MODE_FRAME) + return; + } +#endif + snd_pcm_period_elapsed(emu->pcm_capture_substream); +} + +static void snd_emu10k1_pcm_ac97mic_interrupt(struct snd_emu10k1 *emu, + unsigned int status) +{ +#if 0 + if (status & IPR_MICBUFHALFFULL) { + if (emu->pcm_capture_mic_substream->runtime->mode == SNDRV_PCM_MODE_FRAME) + return; + } +#endif + snd_pcm_period_elapsed(emu->pcm_capture_mic_substream); +} + +static void snd_emu10k1_pcm_efx_interrupt(struct snd_emu10k1 *emu, + unsigned int status) +{ +#if 0 + if (status & IPR_EFXBUFHALFFULL) { + if (emu->pcm_capture_efx_substream->runtime->mode == SNDRV_PCM_MODE_FRAME) + return; + } +#endif + snd_pcm_period_elapsed(emu->pcm_capture_efx_substream); +} + +static void snd_emu10k1_pcm_free_voices(struct snd_emu10k1_pcm *epcm) +{ + for (unsigned i = 0; i < ARRAY_SIZE(epcm->voices); i++) { + if (epcm->voices[i]) { + snd_emu10k1_voice_free(epcm->emu, epcm->voices[i]); + epcm->voices[i] = NULL; + } + } +} + +static int snd_emu10k1_pcm_channel_alloc(struct snd_emu10k1_pcm *epcm, + int type, int count, int channels) +{ + int err; + + snd_emu10k1_pcm_free_voices(epcm); + + err = snd_emu10k1_voice_alloc(epcm->emu, + type, count, channels, + epcm, &epcm->voices[0]); + if (err < 0) + return err; + + if (epcm->extra == NULL) { + // The hardware supports only (half-)loop interrupts, so to support an + // arbitrary number of periods per buffer, we use an extra voice with a + // period-sized loop as the interrupt source. Additionally, the interrupt + // timing of the hardware is "suboptimal" and needs some compensation. + err = snd_emu10k1_voice_alloc(epcm->emu, + type + 1, 1, 1, + epcm, &epcm->extra); + if (err < 0) { + /* + dev_dbg(emu->card->dev, "pcm_channel_alloc: " + "failed extra: voices=%d, frame=%d\n", + voices, frame); + */ + snd_emu10k1_pcm_free_voices(epcm); + return err; + } + epcm->extra->interrupt = snd_emu10k1_pcm_interrupt; + } + + return 0; +} + +// Primes 2-7 and 2^n multiples thereof, up to 16. +static const unsigned int efx_capture_channels[] = { + 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16 +}; + +static const struct snd_pcm_hw_constraint_list hw_constraints_efx_capture_channels = { + .count = ARRAY_SIZE(efx_capture_channels), + .list = efx_capture_channels, + .mask = 0 +}; + +static const unsigned int capture_buffer_sizes[31] = { + 384, 448, 512, 640, + 384*2, 448*2, 512*2, 640*2, + 384*4, 448*4, 512*4, 640*4, + 384*8, 448*8, 512*8, 640*8, + 384*16, 448*16, 512*16, 640*16, + 384*32, 448*32, 512*32, 640*32, + 384*64, 448*64, 512*64, 640*64, + 384*128,448*128,512*128 +}; + +static const struct snd_pcm_hw_constraint_list hw_constraints_capture_buffer_sizes = { + .count = 31, + .list = capture_buffer_sizes, + .mask = 0 +}; + +static const unsigned int capture_rates[8] = { + 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000 +}; + +static const struct snd_pcm_hw_constraint_list hw_constraints_capture_rates = { + .count = 8, + .list = capture_rates, + .mask = 0 +}; + +static unsigned int snd_emu10k1_capture_rate_reg(unsigned int rate) +{ + switch (rate) { + case 8000: return ADCCR_SAMPLERATE_8; + case 11025: return ADCCR_SAMPLERATE_11; + case 16000: return ADCCR_SAMPLERATE_16; + case 22050: return ADCCR_SAMPLERATE_22; + case 24000: return ADCCR_SAMPLERATE_24; + case 32000: return ADCCR_SAMPLERATE_32; + case 44100: return ADCCR_SAMPLERATE_44; + case 48000: return ADCCR_SAMPLERATE_48; + default: + snd_BUG(); + return ADCCR_SAMPLERATE_8; + } +} + +static const unsigned int audigy_capture_rates[9] = { + 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 +}; + +static const struct snd_pcm_hw_constraint_list hw_constraints_audigy_capture_rates = { + .count = 9, + .list = audigy_capture_rates, + .mask = 0 +}; + +static unsigned int snd_emu10k1_audigy_capture_rate_reg(unsigned int rate) +{ + switch (rate) { + case 8000: return A_ADCCR_SAMPLERATE_8; + case 11025: return A_ADCCR_SAMPLERATE_11; + case 12000: return A_ADCCR_SAMPLERATE_12; + case 16000: return ADCCR_SAMPLERATE_16; + case 22050: return ADCCR_SAMPLERATE_22; + case 24000: return ADCCR_SAMPLERATE_24; + case 32000: return ADCCR_SAMPLERATE_32; + case 44100: return ADCCR_SAMPLERATE_44; + case 48000: return ADCCR_SAMPLERATE_48; + default: + snd_BUG(); + return A_ADCCR_SAMPLERATE_8; + } +} + +static void snd_emu10k1_constrain_capture_rates(struct snd_emu10k1 *emu, + struct snd_pcm_runtime *runtime) +{ + if (emu->card_capabilities->emu_model && + emu->emu1010.word_clock == 44100) { + // This also sets the rate constraint by deleting SNDRV_PCM_RATE_KNOT + runtime->hw.rates = SNDRV_PCM_RATE_11025 | \ + SNDRV_PCM_RATE_22050 | \ + SNDRV_PCM_RATE_44100; + runtime->hw.rate_min = 11025; + runtime->hw.rate_max = 44100; + return; + } + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + emu->audigy ? &hw_constraints_audigy_capture_rates : + &hw_constraints_capture_rates); +} + +static void snd_emu1010_constrain_efx_rate(struct snd_emu10k1 *emu, + struct snd_pcm_runtime *runtime) +{ + int rate; + + rate = emu->emu1010.word_clock; + runtime->hw.rate_min = runtime->hw.rate_max = rate; + runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate); +} + +static unsigned int emu10k1_calc_pitch_target(unsigned int rate) +{ + unsigned int pitch_target; + + pitch_target = (rate << 8) / 375; + pitch_target = (pitch_target >> 1) + (pitch_target & 1); + return pitch_target; +} + +#define PITCH_48000 0x00004000 +#define PITCH_96000 0x00008000 +#define PITCH_85000 0x00007155 +#define PITCH_80726 0x00006ba2 +#define PITCH_67882 0x00005a82 +#define PITCH_57081 0x00004c1c + +static unsigned int emu10k1_select_interprom(unsigned int pitch_target) +{ + if (pitch_target == PITCH_48000) + return CCCA_INTERPROM_0; + else if (pitch_target < PITCH_48000) + return CCCA_INTERPROM_1; + else if (pitch_target >= PITCH_96000) + return CCCA_INTERPROM_0; + else if (pitch_target >= PITCH_85000) + return CCCA_INTERPROM_6; + else if (pitch_target >= PITCH_80726) + return CCCA_INTERPROM_5; + else if (pitch_target >= PITCH_67882) + return CCCA_INTERPROM_4; + else if (pitch_target >= PITCH_57081) + return CCCA_INTERPROM_3; + else + return CCCA_INTERPROM_2; +} + +static u16 emu10k1_send_target_from_amount(u8 amount) +{ + static const u8 shifts[8] = { 4, 4, 5, 6, 7, 8, 9, 10 }; + static const u16 offsets[8] = { 0, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000 }; + u8 exp; + + if (amount == 0xff) + return 0xffff; + exp = amount >> 5; + return ((amount & 0x1f) << shifts[exp]) + offsets[exp]; +} + +static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + bool w_16, bool stereo, + unsigned int start_addr, + unsigned int end_addr, + const unsigned char *send_routing, + const unsigned char *send_amount) +{ + unsigned int silent_page; + int voice; + + voice = evoice->number; + + silent_page = ((unsigned int)emu->silent_page.addr << emu->address_mode) | + (emu->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0); + snd_emu10k1_ptr_write_multiple(emu, voice, + // Not really necessary for the slave, but it doesn't hurt + CPF, stereo ? CPF_STEREO_MASK : 0, + // Assumption that PT is already 0 so no harm overwriting + PTRX, (send_amount[0] << 8) | send_amount[1], + // Stereo slaves don't need to have the addresses set, but it doesn't hurt + DSL, end_addr | (send_amount[3] << 24), + PSST, start_addr | (send_amount[2] << 24), + CCCA, emu10k1_select_interprom(evoice->epcm->pitch_target) | + (w_16 ? 0 : CCCA_8BITSELECT), + // Clear filter delay memory + Z1, 0, + Z2, 0, + // Invalidate maps + MAPA, silent_page, + MAPB, silent_page, + // Disable filter (in conjunction with CCCA_RESONANCE == 0) + VTFT, VTFT_FILTERTARGET_MASK, + CVCF, CVCF_CURRENTFILTER_MASK, + REGLIST_END); + // Setup routing + if (emu->audigy) { + snd_emu10k1_ptr_write_multiple(emu, voice, + A_FXRT1, snd_emu10k1_compose_audigy_fxrt1(send_routing), + A_FXRT2, snd_emu10k1_compose_audigy_fxrt2(send_routing), + A_SENDAMOUNTS, snd_emu10k1_compose_audigy_sendamounts(send_amount), + REGLIST_END); + for (int i = 0; i < 4; i++) { + u32 aml = emu10k1_send_target_from_amount(send_amount[2 * i]); + u32 amh = emu10k1_send_target_from_amount(send_amount[2 * i + 1]); + snd_emu10k1_ptr_write(emu, A_CSBA + i, voice, (amh << 16) | aml); + } + } else { + snd_emu10k1_ptr_write(emu, FXRT, voice, + snd_emu10k1_compose_send_routing(send_routing)); + } + + emu->voices[voice].dirty = 1; +} + +static void snd_emu10k1_pcm_init_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + bool w_16, bool stereo, + unsigned int start_addr, + unsigned int end_addr, + struct snd_emu10k1_pcm_mixer *mix) +{ + spin_lock_irq(&emu->reg_lock); + snd_emu10k1_pcm_init_voice(emu, evoice, w_16, stereo, + start_addr, end_addr, + &mix->send_routing[stereo][0], + &mix->send_volume[stereo][0]); + if (stereo) + snd_emu10k1_pcm_init_voice(emu, evoice + 1, w_16, true, + start_addr, end_addr, + &mix->send_routing[2][0], + &mix->send_volume[2][0]); + spin_unlock_irq(&emu->reg_lock); +} + +static void snd_emu10k1_pcm_init_extra_voice(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + bool w_16, + unsigned int start_addr, + unsigned int end_addr) +{ + static const unsigned char send_routing[8] = { 0, 1, 2, 3, 4, 5, 6, 7 }; + static const unsigned char send_amount[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; + + snd_emu10k1_pcm_init_voice(emu, evoice, w_16, false, + start_addr, end_addr, + send_routing, send_amount); +} + +static int snd_emu10k1_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + size_t alloc_size; + int type, channels, count; + int err; + + if (epcm->type == PLAYBACK_EMUVOICE) { + type = EMU10K1_PCM; + channels = 1; + count = params_channels(hw_params); + } else { + type = EMU10K1_EFX; + channels = params_channels(hw_params); + count = 1; + } + err = snd_emu10k1_pcm_channel_alloc(epcm, type, count, channels); + if (err < 0) + return err; + + alloc_size = params_buffer_bytes(hw_params); + if (emu->iommu_workaround) + alloc_size += EMUPAGESIZE; + err = snd_pcm_lib_malloc_pages(substream, alloc_size); + if (err < 0) + return err; + if (emu->iommu_workaround && runtime->dma_bytes >= EMUPAGESIZE) + runtime->dma_bytes -= EMUPAGESIZE; + if (err > 0) { /* change */ + int mapped; + if (epcm->memblk != NULL) + snd_emu10k1_free_pages(emu, epcm->memblk); + epcm->memblk = snd_emu10k1_alloc_pages(emu, substream); + epcm->start_addr = 0; + if (! epcm->memblk) + return -ENOMEM; + mapped = ((struct snd_emu10k1_memblk *)epcm->memblk)->mapped_page; + if (mapped < 0) + return -ENOMEM; + epcm->start_addr = mapped << PAGE_SHIFT; + } + return 0; +} + +static int snd_emu10k1_playback_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm; + + if (runtime->private_data == NULL) + return 0; + epcm = runtime->private_data; + if (epcm->extra) { + snd_emu10k1_voice_free(epcm->emu, epcm->extra); + epcm->extra = NULL; + } + snd_emu10k1_pcm_free_voices(epcm); + if (epcm->memblk) { + snd_emu10k1_free_pages(emu, epcm->memblk); + epcm->memblk = NULL; + epcm->start_addr = 0; + } + snd_pcm_lib_free_pages(substream); + return 0; +} + +static int snd_emu10k1_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + bool w_16 = snd_pcm_format_width(runtime->format) == 16; + bool stereo = runtime->channels == 2; + unsigned int start_addr, end_addr; + unsigned int rate; + + rate = runtime->rate; + if (emu->card_capabilities->emu_model && + emu->emu1010.word_clock == 44100) + rate = rate * 480 / 441; + epcm->pitch_target = emu10k1_calc_pitch_target(rate); + + start_addr = epcm->start_addr >> w_16; + end_addr = start_addr + runtime->period_size; + snd_emu10k1_pcm_init_extra_voice(emu, epcm->extra, w_16, + start_addr, end_addr); + start_addr >>= stereo; + epcm->ccca_start_addr = start_addr; + end_addr = start_addr + runtime->buffer_size; + snd_emu10k1_pcm_init_voices(emu, epcm->voices[0], w_16, stereo, + start_addr, end_addr, + &emu->pcm_mixer[substream->number]); + + return 0; +} + +static int snd_emu10k1_efx_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + unsigned int start_addr; + unsigned int extra_size, channel_size; + unsigned int i; + + epcm->pitch_target = PITCH_48000; + + start_addr = epcm->start_addr >> 1; // 16-bit voices + + extra_size = runtime->period_size; + channel_size = runtime->buffer_size; + + snd_emu10k1_pcm_init_extra_voice(emu, epcm->extra, true, + start_addr, start_addr + extra_size); + + epcm->ccca_start_addr = start_addr; + for (i = 0; i < runtime->channels; i++) { + snd_emu10k1_pcm_init_voices(emu, epcm->voices[i], true, false, + start_addr, start_addr + channel_size, + &emu->efx_pcm_mixer[i]); + start_addr += channel_size; + } + + return 0; +} + +static const struct snd_pcm_hardware snd_emu10k1_efx_playback = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_NONINTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = NUM_EFX_PLAYBACK, + .buffer_bytes_max = (128*1024), + .period_bytes_max = (128*1024), + .periods_min = 2, + .periods_max = 1024, + .fifo_size = 0, +}; + +static int snd_emu10k1_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + int idx; + + /* zeroing the buffer size will stop capture */ + snd_emu10k1_ptr_write(emu, epcm->capture_bs_reg, 0, 0); + switch (epcm->type) { + case CAPTURE_AC97ADC: + snd_emu10k1_ptr_write(emu, ADCCR, 0, 0); + break; + case CAPTURE_EFX: + if (emu->card_capabilities->emu_model) { + // The upper 32 16-bit capture voices, two for each of the 16 32-bit channels. + // The lower voices are occupied by A_EXTOUT_*_CAP*. + epcm->capture_cr_val = 0; + epcm->capture_cr_val2 = 0xffffffff >> (32 - runtime->channels * 2); + } + if (emu->audigy) { + snd_emu10k1_ptr_write_multiple(emu, 0, + A_FXWC1, 0, + A_FXWC2, 0, + REGLIST_END); + } else + snd_emu10k1_ptr_write(emu, FXWC, 0, 0); + break; + default: + break; + } + snd_emu10k1_ptr_write(emu, epcm->capture_ba_reg, 0, runtime->dma_addr); + epcm->capture_bufsize = snd_pcm_lib_buffer_bytes(substream); + epcm->capture_bs_val = 0; + for (idx = 0; idx < 31; idx++) { + if (capture_buffer_sizes[idx] == epcm->capture_bufsize) { + epcm->capture_bs_val = idx + 1; + break; + } + } + if (epcm->capture_bs_val == 0) { + snd_BUG(); + epcm->capture_bs_val++; + } + if (epcm->type == CAPTURE_AC97ADC) { + unsigned rate = runtime->rate; + if (!(runtime->hw.rates & SNDRV_PCM_RATE_48000)) + rate = rate * 480 / 441; + + epcm->capture_cr_val = emu->audigy ? A_ADCCR_LCHANENABLE : ADCCR_LCHANENABLE; + if (runtime->channels > 1) + epcm->capture_cr_val |= emu->audigy ? A_ADCCR_RCHANENABLE : ADCCR_RCHANENABLE; + epcm->capture_cr_val |= emu->audigy ? + snd_emu10k1_audigy_capture_rate_reg(rate) : + snd_emu10k1_capture_rate_reg(rate); + } + return 0; +} + +static void snd_emu10k1_playback_fill_cache(struct snd_emu10k1 *emu, + unsigned voice, + u32 sample, bool stereo) +{ + u32 ccr; + + // We assume that the cache is resting at this point (i.e., + // CCR_CACHEINVALIDSIZE is very small). + + // Clear leading frames. For simplicitly, this does too much, + // except for 16-bit stereo. And the interpolator will actually + // access them at all only when we're pitch-shifting. + for (int i = 0; i < 3; i++) + snd_emu10k1_ptr_write(emu, CD0 + i, voice, sample); + + // Fill cache + ccr = (64 - 3) << REG_SHIFT(CCR_CACHEINVALIDSIZE); + if (stereo) { + // The engine goes haywire if CCR_READADDRESS is out of sync + snd_emu10k1_ptr_write(emu, CCR, voice + 1, ccr); + } + snd_emu10k1_ptr_write(emu, CCR, voice, ccr); +} + +static void snd_emu10k1_playback_prepare_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm, + bool w_16, bool stereo, + int channels) +{ + struct snd_pcm_substream *substream = epcm->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned eloop_start = epcm->start_addr >> w_16; + unsigned loop_start = eloop_start >> stereo; + unsigned eloop_size = runtime->period_size; + unsigned loop_size = runtime->buffer_size; + u32 sample = w_16 ? 0 : 0x80808080; + + // To make the playback actually start at the 1st frame, + // we need to compensate for two circumstances: + // - The actual position is delayed by the cache size (64 frames) + // - The interpolator is centered around the 4th frame + loop_start += (epcm->resume_pos + 64 - 3) % loop_size; + for (int i = 0; i < channels; i++) { + unsigned voice = epcm->voices[i]->number; + snd_emu10k1_ptr_write(emu, CCCA_CURRADDR, voice, loop_start); + loop_start += loop_size; + snd_emu10k1_playback_fill_cache(emu, voice, sample, stereo); + } + + // The interrupt is triggered when CCCA_CURRADDR (CA) wraps around, + // which is ahead of the actual playback position, so the interrupt + // source needs to be delayed. + // + // In principle, this wouldn't need to be the cache's entire size - in + // practice, CCR_CACHEINVALIDSIZE (CIS) > `fetch threshold` has never + // been observed, and assuming 40 _bytes_ should be safe. + // + // The cache fills are somewhat random, which makes it impossible to + // align them with the interrupts. This makes a non-delayed interrupt + // source not practical, as the interrupt handler would have to wait + // for (CA - CIS) >= period_boundary for every channel in the stream. + // + // This is why all other (open) drivers for these chips use timer-based + // interrupts. + // + eloop_start += (epcm->resume_pos + eloop_size - 3) % eloop_size; + snd_emu10k1_ptr_write(emu, CCCA_CURRADDR, epcm->extra->number, eloop_start); + + // It takes a moment until the cache fills complete, + // but the unmuting takes long enough for that. +} + +static void snd_emu10k1_playback_commit_volume(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + unsigned int vattn) +{ + snd_emu10k1_ptr_write_multiple(emu, evoice->number, + VTFT, vattn | VTFT_FILTERTARGET_MASK, + CVCF, vattn | CVCF_CURRENTFILTER_MASK, + REGLIST_END); +} + +static void snd_emu10k1_playback_unmute_voice(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + bool stereo, bool master, + struct snd_emu10k1_pcm_mixer *mix) +{ + unsigned int vattn; + unsigned int tmp; + + tmp = stereo ? (master ? 1 : 2) : 0; + vattn = mix->attn[tmp] << 16; + snd_emu10k1_playback_commit_volume(emu, evoice, vattn); +} + +static void snd_emu10k1_playback_unmute_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + bool stereo, + struct snd_emu10k1_pcm_mixer *mix) +{ + snd_emu10k1_playback_unmute_voice(emu, evoice, stereo, true, mix); + if (stereo) + snd_emu10k1_playback_unmute_voice(emu, evoice + 1, true, false, mix); +} + +static void snd_emu10k1_playback_mute_voice(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice) +{ + snd_emu10k1_playback_commit_volume(emu, evoice, 0); +} + +static void snd_emu10k1_playback_mute_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice, + bool stereo) +{ + snd_emu10k1_playback_mute_voice(emu, evoice); + if (stereo) + snd_emu10k1_playback_mute_voice(emu, evoice + 1); +} + +static void snd_emu10k1_playback_commit_pitch(struct snd_emu10k1 *emu, + u32 voice, u32 pitch_target) +{ + u32 ptrx = snd_emu10k1_ptr_read(emu, PTRX, voice); + u32 cpf = snd_emu10k1_ptr_read(emu, CPF, voice); + snd_emu10k1_ptr_write_multiple(emu, voice, + PTRX, (ptrx & ~PTRX_PITCHTARGET_MASK) | pitch_target, + CPF, (cpf & ~(CPF_CURRENTPITCH_MASK | CPF_FRACADDRESS_MASK)) | pitch_target, + REGLIST_END); +} + +static void snd_emu10k1_playback_trigger_voice(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice) +{ + unsigned int voice; + + voice = evoice->number; + snd_emu10k1_playback_commit_pitch(emu, voice, evoice->epcm->pitch_target << 16); +} + +static void snd_emu10k1_playback_stop_voice(struct snd_emu10k1 *emu, + struct snd_emu10k1_voice *evoice) +{ + unsigned int voice; + + voice = evoice->number; + snd_emu10k1_playback_commit_pitch(emu, voice, 0); +} + +static void snd_emu10k1_playback_set_running(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm) +{ + epcm->running = 1; + snd_emu10k1_voice_intr_enable(emu, epcm->extra->number); +} + +static void snd_emu10k1_playback_set_stopped(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm) +{ + snd_emu10k1_voice_intr_disable(emu, epcm->extra->number); + epcm->running = 0; +} + +static int snd_emu10k1_playback_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + struct snd_emu10k1_pcm_mixer *mix; + bool w_16 = snd_pcm_format_width(runtime->format) == 16; + bool stereo = runtime->channels == 2; + int result = 0; + + /* + dev_dbg(emu->card->dev, + "trigger - emu10k1 = 0x%x, cmd = %i, pointer = %i\n", + (int)emu, cmd, substream->ops->pointer(substream)) + */ + spin_lock(&emu->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + snd_emu10k1_playback_prepare_voices(emu, epcm, w_16, stereo, 1); + fallthrough; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_RESUME: + mix = &emu->pcm_mixer[substream->number]; + snd_emu10k1_playback_unmute_voices(emu, epcm->voices[0], stereo, mix); + snd_emu10k1_playback_set_running(emu, epcm); + snd_emu10k1_playback_trigger_voice(emu, epcm->voices[0]); + snd_emu10k1_playback_trigger_voice(emu, epcm->extra); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_SUSPEND: + snd_emu10k1_playback_stop_voice(emu, epcm->voices[0]); + snd_emu10k1_playback_stop_voice(emu, epcm->extra); + snd_emu10k1_playback_set_stopped(emu, epcm); + snd_emu10k1_playback_mute_voices(emu, epcm->voices[0], stereo); + break; + default: + result = -EINVAL; + break; + } + spin_unlock(&emu->reg_lock); + return result; +} + +static int snd_emu10k1_capture_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + int result = 0; + + spin_lock(&emu->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + /* hmm this should cause full and half full interrupt to be raised? */ + outl(epcm->capture_ipr, emu->port + IPR); + snd_emu10k1_intr_enable(emu, epcm->capture_inte); + /* + dev_dbg(emu->card->dev, "adccr = 0x%x, adcbs = 0x%x\n", + epcm->adccr, epcm->adcbs); + */ + switch (epcm->type) { + case CAPTURE_AC97ADC: + snd_emu10k1_ptr_write(emu, ADCCR, 0, epcm->capture_cr_val); + break; + case CAPTURE_EFX: + if (emu->audigy) { + snd_emu10k1_ptr_write_multiple(emu, 0, + A_FXWC1, epcm->capture_cr_val, + A_FXWC2, epcm->capture_cr_val2, + REGLIST_END); + dev_dbg(emu->card->dev, + "cr_val=0x%x, cr_val2=0x%x\n", + epcm->capture_cr_val, + epcm->capture_cr_val2); + } else + snd_emu10k1_ptr_write(emu, FXWC, 0, epcm->capture_cr_val); + break; + default: + break; + } + snd_emu10k1_ptr_write(emu, epcm->capture_bs_reg, 0, epcm->capture_bs_val); + epcm->running = 1; + epcm->first_ptr = 1; + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + epcm->running = 0; + snd_emu10k1_intr_disable(emu, epcm->capture_inte); + outl(epcm->capture_ipr, emu->port + IPR); + snd_emu10k1_ptr_write(emu, epcm->capture_bs_reg, 0, 0); + switch (epcm->type) { + case CAPTURE_AC97ADC: + snd_emu10k1_ptr_write(emu, ADCCR, 0, 0); + break; + case CAPTURE_EFX: + if (emu->audigy) { + snd_emu10k1_ptr_write_multiple(emu, 0, + A_FXWC1, 0, + A_FXWC2, 0, + REGLIST_END); + } else + snd_emu10k1_ptr_write(emu, FXWC, 0, 0); + break; + default: + break; + } + break; + default: + result = -EINVAL; + } + spin_unlock(&emu->reg_lock); + return result; +} + +static snd_pcm_uframes_t snd_emu10k1_playback_pointer(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + int ptr; + + if (!epcm->running) + return 0; + + ptr = snd_emu10k1_ptr_read(emu, CCCA, epcm->voices[0]->number) & 0x00ffffff; + ptr -= epcm->ccca_start_addr; + + // This is the size of the whole cache minus the interpolator read-ahead, + // which leads us to the actual playback position. + // + // The cache is constantly kept mostly filled, so in principle we could + // return a more advanced position representing how far the hardware has + // already read the buffer, and set runtime->delay accordingly. However, + // this would be slightly different for every channel (and remarkably slow + // to obtain), so only a fixed worst-case value would be practical. + // + ptr -= 64 - 3; + if (ptr < 0) + ptr += runtime->buffer_size; + + /* + dev_dbg(emu->card->dev, + "ptr = 0x%lx, buffer_size = 0x%lx, period_size = 0x%lx\n", + (long)ptr, (long)runtime->buffer_size, + (long)runtime->period_size); + */ + return ptr; +} + +static u64 snd_emu10k1_efx_playback_voice_mask(struct snd_emu10k1_pcm *epcm, + int channels) +{ + u64 mask = 0; + + for (int i = 0; i < channels; i++) { + int voice = epcm->voices[i]->number; + mask |= 1ULL << voice; + } + return mask; +} + +static void snd_emu10k1_efx_playback_freeze_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm, + int channels) +{ + for (int i = 0; i < channels; i++) { + int voice = epcm->voices[i]->number; + snd_emu10k1_ptr_write(emu, CPF_STOP, voice, 1); + snd_emu10k1_playback_commit_pitch(emu, voice, PITCH_48000 << 16); + } +} + +static void snd_emu10k1_efx_playback_unmute_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm, + int channels) +{ + for (int i = 0; i < channels; i++) + snd_emu10k1_playback_unmute_voice(emu, epcm->voices[i], false, true, + &emu->efx_pcm_mixer[i]); +} + +static void snd_emu10k1_efx_playback_stop_voices(struct snd_emu10k1 *emu, + struct snd_emu10k1_pcm *epcm, + int channels) +{ + for (int i = 0; i < channels; i++) + snd_emu10k1_playback_stop_voice(emu, epcm->voices[i]); + snd_emu10k1_playback_set_stopped(emu, epcm); + + for (int i = 0; i < channels; i++) + snd_emu10k1_playback_mute_voice(emu, epcm->voices[i]); +} + +static int snd_emu10k1_efx_playback_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + u64 mask; + int result = 0; + + spin_lock(&emu->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_RESUME: + mask = snd_emu10k1_efx_playback_voice_mask( + epcm, runtime->channels); + for (int i = 0; i < 10; i++) { + // Note that the freeze is not interruptible, so we make no + // effort to reset the bits outside the error handling here. + snd_emu10k1_voice_set_loop_stop_multiple(emu, mask); + snd_emu10k1_efx_playback_freeze_voices( + emu, epcm, runtime->channels); + snd_emu10k1_playback_prepare_voices( + emu, epcm, true, false, runtime->channels); + + // It might seem to make more sense to unmute the voices only after + // they have been started, to potentially avoid torturing the speakers + // if something goes wrong. However, we cannot unmute atomically, + // which means that we'd get some mild artifacts in the regular case. + snd_emu10k1_efx_playback_unmute_voices(emu, epcm, runtime->channels); + + snd_emu10k1_playback_set_running(emu, epcm); + result = snd_emu10k1_voice_clear_loop_stop_multiple_atomic(emu, mask); + if (result == 0) { + // The extra voice is allowed to lag a bit + snd_emu10k1_playback_trigger_voice(emu, epcm->extra); + goto leave; + } + + snd_emu10k1_efx_playback_stop_voices( + emu, epcm, runtime->channels); + + if (result != -EAGAIN) + break; + // The sync start can legitimately fail due to NMIs, etc. + } + snd_emu10k1_voice_clear_loop_stop_multiple(emu, mask); + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + snd_emu10k1_playback_stop_voice(emu, epcm->extra); + snd_emu10k1_efx_playback_stop_voices( + emu, epcm, runtime->channels); + + epcm->resume_pos = snd_emu10k1_playback_pointer(substream); + break; + default: + result = -EINVAL; + break; + } +leave: + spin_unlock(&emu->reg_lock); + return result; +} + + +static snd_pcm_uframes_t snd_emu10k1_capture_pointer(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm = runtime->private_data; + unsigned int ptr; + + if (!epcm->running) + return 0; + if (epcm->first_ptr) { + udelay(50); /* hack, it takes awhile until capture is started */ + epcm->first_ptr = 0; + } + ptr = snd_emu10k1_ptr_read(emu, epcm->capture_idx_reg, 0) & 0x0000ffff; + return bytes_to_frames(runtime, ptr); +} + +/* + * Playback support device description + */ + +static const struct snd_pcm_hardware snd_emu10k1_playback = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE), + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_96000, + .rate_min = 4000, + .rate_max = 96000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_max = (128*1024), + .periods_min = 2, + .periods_max = 1024, + .fifo_size = 0, +}; + +/* + * Capture support device description + */ + +static const struct snd_pcm_hardware snd_emu10k1_capture = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_KNOT, + .rate_min = 8000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = (64*1024), + .period_bytes_min = 384, + .period_bytes_max = (64*1024), + .periods_min = 2, + .periods_max = 2, + .fifo_size = 0, +}; + +static const struct snd_pcm_hardware snd_emu10k1_capture_efx = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 16, + .buffer_bytes_max = (64*1024), + .period_bytes_min = 384, + .period_bytes_max = (64*1024), + .periods_min = 2, + .periods_max = 2, + .fifo_size = 0, +}; + +/* + * + */ + +static void snd_emu10k1_pcm_mixer_notify1(struct snd_emu10k1 *emu, struct snd_kcontrol *kctl, int idx, int activate) +{ + struct snd_ctl_elem_id id; + + if (! kctl) + return; + if (activate) + kctl->vd[idx].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; + else + kctl->vd[idx].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE; + snd_ctl_notify(emu->card, SNDRV_CTL_EVENT_MASK_VALUE | + SNDRV_CTL_EVENT_MASK_INFO, + snd_ctl_build_ioff(&id, kctl, idx)); +} + +static void snd_emu10k1_pcm_mixer_notify(struct snd_emu10k1 *emu, int idx, int activate) +{ + snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_send_routing, idx, activate); + snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_send_volume, idx, activate); + snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_attn, idx, activate); +} + +static void snd_emu10k1_pcm_efx_mixer_notify(struct snd_emu10k1 *emu, int idx, int activate) +{ + snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_efx_send_routing, idx, activate); + snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_efx_send_volume, idx, activate); + snd_emu10k1_pcm_mixer_notify1(emu, emu->ctl_efx_attn, idx, activate); +} + +static void snd_emu10k1_pcm_free_substream(struct snd_pcm_runtime *runtime) +{ + kfree(runtime->private_data); +} + +static int snd_emu10k1_efx_playback_close(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_pcm_mixer *mix; + int i; + + for (i = 0; i < NUM_EFX_PLAYBACK; i++) { + mix = &emu->efx_pcm_mixer[i]; + mix->epcm = NULL; + snd_emu10k1_pcm_efx_mixer_notify(emu, i, 0); + } + return 0; +} + +static int snd_emu10k1_playback_set_constraints(struct snd_pcm_runtime *runtime) +{ + int err; + + // The buffer size must be a multiple of the period size, to avoid a + // mismatch between the extra voice and the regular voices. + err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) + return err; + // The hardware is typically the cache's size of 64 frames ahead. + // Leave enough time for actually filling up the buffer. + err = snd_pcm_hw_constraint_minmax( + runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 128, UINT_MAX); + return err; +} + +static int snd_emu10k1_efx_playback_open(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_pcm *epcm; + struct snd_emu10k1_pcm_mixer *mix; + struct snd_pcm_runtime *runtime = substream->runtime; + int i, j, err; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + epcm->emu = emu; + epcm->type = PLAYBACK_EFX; + epcm->substream = substream; + + runtime->private_data = epcm; + runtime->private_free = snd_emu10k1_pcm_free_substream; + runtime->hw = snd_emu10k1_efx_playback; + if (emu->card_capabilities->emu_model) + snd_emu1010_constrain_efx_rate(emu, runtime); + err = snd_emu10k1_playback_set_constraints(runtime); + if (err < 0) { + kfree(epcm); + return err; + } + + for (i = 0; i < NUM_EFX_PLAYBACK; i++) { + mix = &emu->efx_pcm_mixer[i]; + for (j = 0; j < 8; j++) + mix->send_routing[0][j] = i + j; + memset(&mix->send_volume, 0, sizeof(mix->send_volume)); + mix->send_volume[0][0] = 255; + mix->attn[0] = 0x8000; + mix->epcm = epcm; + snd_emu10k1_pcm_efx_mixer_notify(emu, i, 1); + } + return 0; +} + +static int snd_emu10k1_playback_open(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_pcm *epcm; + struct snd_emu10k1_pcm_mixer *mix; + struct snd_pcm_runtime *runtime = substream->runtime; + int i, err, sample_rate; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + epcm->emu = emu; + epcm->type = PLAYBACK_EMUVOICE; + epcm->substream = substream; + runtime->private_data = epcm; + runtime->private_free = snd_emu10k1_pcm_free_substream; + runtime->hw = snd_emu10k1_playback; + err = snd_emu10k1_playback_set_constraints(runtime); + if (err < 0) { + kfree(epcm); + return err; + } + if (emu->card_capabilities->emu_model) + sample_rate = emu->emu1010.word_clock; + else + sample_rate = 48000; + err = snd_pcm_hw_rule_noresample(runtime, sample_rate); + if (err < 0) { + kfree(epcm); + return err; + } + mix = &emu->pcm_mixer[substream->number]; + for (i = 0; i < 8; i++) + mix->send_routing[0][i] = mix->send_routing[1][i] = mix->send_routing[2][i] = i; + memset(&mix->send_volume, 0, sizeof(mix->send_volume)); + mix->send_volume[0][0] = mix->send_volume[0][1] = + mix->send_volume[1][0] = mix->send_volume[2][1] = 255; + mix->attn[0] = mix->attn[1] = mix->attn[2] = 0x8000; + mix->epcm = epcm; + snd_emu10k1_pcm_mixer_notify(emu, substream->number, 1); + return 0; +} + +static int snd_emu10k1_playback_close(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_pcm_mixer *mix = &emu->pcm_mixer[substream->number]; + + mix->epcm = NULL; + snd_emu10k1_pcm_mixer_notify(emu, substream->number, 0); + return 0; +} + +static int snd_emu10k1_capture_open(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_pcm *epcm; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + epcm->emu = emu; + epcm->type = CAPTURE_AC97ADC; + epcm->substream = substream; + epcm->capture_ipr = IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL; + epcm->capture_inte = INTE_ADCBUFENABLE; + epcm->capture_ba_reg = ADCBA; + epcm->capture_bs_reg = ADCBS; + epcm->capture_idx_reg = emu->audigy ? A_ADCIDX : ADCIDX; + runtime->private_data = epcm; + runtime->private_free = snd_emu10k1_pcm_free_substream; + runtime->hw = snd_emu10k1_capture; + snd_emu10k1_constrain_capture_rates(emu, runtime); + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + &hw_constraints_capture_buffer_sizes); + emu->capture_interrupt = snd_emu10k1_pcm_ac97adc_interrupt; + emu->pcm_capture_substream = substream; + return 0; +} + +static int snd_emu10k1_capture_close(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + + emu->capture_interrupt = NULL; + emu->pcm_capture_substream = NULL; + return 0; +} + +static int snd_emu10k1_capture_mic_open(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_pcm *epcm; + struct snd_pcm_runtime *runtime = substream->runtime; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + epcm->emu = emu; + epcm->type = CAPTURE_AC97MIC; + epcm->substream = substream; + epcm->capture_ipr = IPR_MICBUFFULL|IPR_MICBUFHALFFULL; + epcm->capture_inte = INTE_MICBUFENABLE; + epcm->capture_ba_reg = MICBA; + epcm->capture_bs_reg = MICBS; + epcm->capture_idx_reg = emu->audigy ? A_MICIDX : MICIDX; + substream->runtime->private_data = epcm; + substream->runtime->private_free = snd_emu10k1_pcm_free_substream; + runtime->hw = snd_emu10k1_capture; + runtime->hw.rates = SNDRV_PCM_RATE_8000; + runtime->hw.rate_min = runtime->hw.rate_max = 8000; + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + &hw_constraints_capture_buffer_sizes); + emu->capture_mic_interrupt = snd_emu10k1_pcm_ac97mic_interrupt; + emu->pcm_capture_mic_substream = substream; + return 0; +} + +static int snd_emu10k1_capture_mic_close(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + + emu->capture_mic_interrupt = NULL; + emu->pcm_capture_mic_substream = NULL; + return 0; +} + +static int snd_emu10k1_capture_efx_open(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_pcm *epcm; + struct snd_pcm_runtime *runtime = substream->runtime; + int nefx = emu->audigy ? 64 : 32; + int idx, err; + + epcm = kzalloc(sizeof(*epcm), GFP_KERNEL); + if (epcm == NULL) + return -ENOMEM; + epcm->emu = emu; + epcm->type = CAPTURE_EFX; + epcm->substream = substream; + epcm->capture_ipr = IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL; + epcm->capture_inte = INTE_EFXBUFENABLE; + epcm->capture_ba_reg = FXBA; + epcm->capture_bs_reg = FXBS; + epcm->capture_idx_reg = FXIDX; + substream->runtime->private_data = epcm; + substream->runtime->private_free = snd_emu10k1_pcm_free_substream; + runtime->hw = snd_emu10k1_capture_efx; + if (emu->card_capabilities->emu_model) { + snd_emu1010_constrain_efx_rate(emu, runtime); + /* + * There are 32 mono channels of 16bits each. + * 24bit Audio uses 2x channels over 16bit, + * 96kHz uses 2x channels over 48kHz, + * 192kHz uses 4x channels over 48kHz. + * So, for 48kHz 24bit, one has 16 channels, + * for 96kHz 24bit, one has 8 channels, + * for 192kHz 24bit, one has 4 channels. + * 1010rev2 and 1616(m) cards have double that, + * but we don't exceed 16 channels anyway. + */ +#if 0 + /* For 96kHz */ + runtime->hw.channels_min = runtime->hw.channels_max = 4; +#endif +#if 0 + /* For 192kHz */ + runtime->hw.channels_min = runtime->hw.channels_max = 2; +#endif + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; + } else { + spin_lock_irq(&emu->reg_lock); + runtime->hw.channels_min = runtime->hw.channels_max = 0; + for (idx = 0; idx < nefx; idx++) { + if (emu->efx_voices_mask[idx/32] & (1 << (idx%32))) { + runtime->hw.channels_min++; + runtime->hw.channels_max++; + } + } + epcm->capture_cr_val = emu->efx_voices_mask[0]; + epcm->capture_cr_val2 = emu->efx_voices_mask[1]; + spin_unlock_irq(&emu->reg_lock); + } + err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + &hw_constraints_efx_capture_channels); + if (err < 0) { + kfree(epcm); + return err; + } + snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + &hw_constraints_capture_buffer_sizes); + emu->capture_efx_interrupt = snd_emu10k1_pcm_efx_interrupt; + emu->pcm_capture_efx_substream = substream; + return 0; +} + +static int snd_emu10k1_capture_efx_close(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + + emu->capture_efx_interrupt = NULL; + emu->pcm_capture_efx_substream = NULL; + return 0; +} + +static const struct snd_pcm_ops snd_emu10k1_playback_ops = { + .open = snd_emu10k1_playback_open, + .close = snd_emu10k1_playback_close, + .hw_params = snd_emu10k1_playback_hw_params, + .hw_free = snd_emu10k1_playback_hw_free, + .prepare = snd_emu10k1_playback_prepare, + .trigger = snd_emu10k1_playback_trigger, + .pointer = snd_emu10k1_playback_pointer, +}; + +static const struct snd_pcm_ops snd_emu10k1_capture_ops = { + .open = snd_emu10k1_capture_open, + .close = snd_emu10k1_capture_close, + .prepare = snd_emu10k1_capture_prepare, + .trigger = snd_emu10k1_capture_trigger, + .pointer = snd_emu10k1_capture_pointer, +}; + +/* EFX playback */ +static const struct snd_pcm_ops snd_emu10k1_efx_playback_ops = { + .open = snd_emu10k1_efx_playback_open, + .close = snd_emu10k1_efx_playback_close, + .hw_params = snd_emu10k1_playback_hw_params, + .hw_free = snd_emu10k1_playback_hw_free, + .prepare = snd_emu10k1_efx_playback_prepare, + .trigger = snd_emu10k1_efx_playback_trigger, + .pointer = snd_emu10k1_playback_pointer, +}; + +int snd_emu10k1_pcm(struct snd_emu10k1 *emu, int device) +{ + struct snd_pcm *pcm; + struct snd_pcm_substream *substream; + int err; + + err = snd_pcm_new(emu->card, "emu10k1", device, 32, 1, &pcm); + if (err < 0) + return err; + + pcm->private_data = emu; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_ops); + + pcm->info_flags = 0; + pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; + strcpy(pcm->name, "ADC Capture/Standard PCM Playback"); + emu->pcm = pcm; + + /* playback substream can't use managed buffers due to alignment */ + for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) + snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG, + &emu->pci->dev, + 64*1024, 64*1024); + + for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; substream; substream = substream->next) + snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV, + &emu->pci->dev, 64*1024, 64*1024); + + return 0; +} + +int snd_emu10k1_pcm_multi(struct snd_emu10k1 *emu, int device) +{ + struct snd_pcm *pcm; + struct snd_pcm_substream *substream; + int err; + + err = snd_pcm_new(emu->card, "emu10k1", device, 1, 0, &pcm); + if (err < 0) + return err; + + pcm->private_data = emu; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_efx_playback_ops); + + pcm->info_flags = 0; + pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; + strcpy(pcm->name, "Multichannel Playback"); + emu->pcm_multi = pcm; + + for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) + snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG, + &emu->pci->dev, + 64*1024, 64*1024); + + return 0; +} + + +static const struct snd_pcm_ops snd_emu10k1_capture_mic_ops = { + .open = snd_emu10k1_capture_mic_open, + .close = snd_emu10k1_capture_mic_close, + .prepare = snd_emu10k1_capture_prepare, + .trigger = snd_emu10k1_capture_trigger, + .pointer = snd_emu10k1_capture_pointer, +}; + +int snd_emu10k1_pcm_mic(struct snd_emu10k1 *emu, int device) +{ + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(emu->card, "emu10k1 mic", device, 0, 1, &pcm); + if (err < 0) + return err; + + pcm->private_data = emu; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_mic_ops); + + pcm->info_flags = 0; + strcpy(pcm->name, "Mic Capture"); + emu->pcm_mic = pcm; + + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &emu->pci->dev, + 64*1024, 64*1024); + + return 0; +} + +static int snd_emu10k1_pcm_efx_voices_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol); + int nefx = emu->audigy ? 64 : 32; + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = nefx; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int snd_emu10k1_pcm_efx_voices_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol); + int nefx = emu->audigy ? 64 : 32; + int idx; + + for (idx = 0; idx < nefx; idx++) + ucontrol->value.integer.value[idx] = (emu->efx_voices_mask[idx / 32] & (1 << (idx % 32))) ? 1 : 0; + return 0; +} + +static int snd_emu10k1_pcm_efx_voices_mask_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol); + unsigned int nval[2], bits; + int nefx = emu->audigy ? 64 : 32; + int change, idx; + + nval[0] = nval[1] = 0; + for (idx = 0, bits = 0; idx < nefx; idx++) + if (ucontrol->value.integer.value[idx]) { + nval[idx / 32] |= 1 << (idx % 32); + bits++; + } + + if (bits == 9 || bits == 11 || bits == 13 || bits == 15 || bits > 16) + return -EINVAL; + + spin_lock_irq(&emu->reg_lock); + change = (nval[0] != emu->efx_voices_mask[0]) || + (nval[1] != emu->efx_voices_mask[1]); + emu->efx_voices_mask[0] = nval[0]; + emu->efx_voices_mask[1] = nval[1]; + spin_unlock_irq(&emu->reg_lock); + return change; +} + +static const struct snd_kcontrol_new snd_emu10k1_pcm_efx_voices_mask = { + .iface = SNDRV_CTL_ELEM_IFACE_PCM, + .name = "Captured FX8010 Outputs", + .info = snd_emu10k1_pcm_efx_voices_mask_info, + .get = snd_emu10k1_pcm_efx_voices_mask_get, + .put = snd_emu10k1_pcm_efx_voices_mask_put +}; + +static const struct snd_pcm_ops snd_emu10k1_capture_efx_ops = { + .open = snd_emu10k1_capture_efx_open, + .close = snd_emu10k1_capture_efx_close, + .prepare = snd_emu10k1_capture_prepare, + .trigger = snd_emu10k1_capture_trigger, + .pointer = snd_emu10k1_capture_pointer, +}; + + +/* EFX playback */ + +#define INITIAL_TRAM_SHIFT 14 +#define INITIAL_TRAM_POS(size) ((((size) / 2) - INITIAL_TRAM_SHIFT) - 1) + +static void snd_emu10k1_fx8010_playback_irq(struct snd_emu10k1 *emu, void *private_data) +{ + struct snd_pcm_substream *substream = private_data; + snd_pcm_period_elapsed(substream); +} + +static void snd_emu10k1_fx8010_playback_tram_poke1(unsigned short *dst_left, + unsigned short *dst_right, + unsigned short *src, + unsigned int count, + unsigned int tram_shift) +{ + /* + dev_dbg(emu->card->dev, + "tram_poke1: dst_left = 0x%p, dst_right = 0x%p, " + "src = 0x%p, count = 0x%x\n", + dst_left, dst_right, src, count); + */ + if ((tram_shift & 1) == 0) { + while (count--) { + *dst_left-- = *src++; + *dst_right-- = *src++; + } + } else { + while (count--) { + *dst_right-- = *src++; + *dst_left-- = *src++; + } + } +} + +static void fx8010_pb_trans_copy(struct snd_pcm_substream *substream, + struct snd_pcm_indirect *rec, size_t bytes) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + unsigned int tram_size = pcm->buffer_size; + unsigned short *src = (unsigned short *)(substream->runtime->dma_area + rec->sw_data); + unsigned int frames = bytes >> 2, count; + unsigned int tram_pos = pcm->tram_pos; + unsigned int tram_shift = pcm->tram_shift; + + while (frames > tram_pos) { + count = tram_pos + 1; + snd_emu10k1_fx8010_playback_tram_poke1((unsigned short *)emu->fx8010.etram_pages.area + tram_pos, + (unsigned short *)emu->fx8010.etram_pages.area + tram_pos + tram_size / 2, + src, count, tram_shift); + src += count * 2; + frames -= count; + tram_pos = (tram_size / 2) - 1; + tram_shift++; + } + snd_emu10k1_fx8010_playback_tram_poke1((unsigned short *)emu->fx8010.etram_pages.area + tram_pos, + (unsigned short *)emu->fx8010.etram_pages.area + tram_pos + tram_size / 2, + src, frames, tram_shift); + tram_pos -= frames; + pcm->tram_pos = tram_pos; + pcm->tram_shift = tram_shift; +} + +static int snd_emu10k1_fx8010_playback_transfer(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + + return snd_pcm_indirect_playback_transfer(substream, &pcm->pcm_rec, + fx8010_pb_trans_copy); +} + +static int snd_emu10k1_fx8010_playback_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + unsigned int i; + + for (i = 0; i < pcm->channels; i++) + snd_emu10k1_ptr_write(emu, TANKMEMADDRREGBASE + 0x80 + pcm->etram[i], 0, 0); + return 0; +} + +static int snd_emu10k1_fx8010_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + unsigned int i; + + /* + dev_dbg(emu->card->dev, "prepare: etram_pages = 0x%p, dma_area = 0x%x, " + "buffer_size = 0x%x (0x%x)\n", + emu->fx8010.etram_pages, runtime->dma_area, + runtime->buffer_size, runtime->buffer_size << 2); + */ + memset(&pcm->pcm_rec, 0, sizeof(pcm->pcm_rec)); + pcm->pcm_rec.hw_buffer_size = pcm->buffer_size * 2; /* byte size */ + pcm->pcm_rec.sw_buffer_size = snd_pcm_lib_buffer_bytes(substream); + pcm->tram_pos = INITIAL_TRAM_POS(pcm->buffer_size); + pcm->tram_shift = 0; + snd_emu10k1_ptr_write_multiple(emu, 0, + emu->gpr_base + pcm->gpr_running, 0, /* reset */ + emu->gpr_base + pcm->gpr_trigger, 0, /* reset */ + emu->gpr_base + pcm->gpr_size, runtime->buffer_size, + emu->gpr_base + pcm->gpr_ptr, 0, /* reset ptr number */ + emu->gpr_base + pcm->gpr_count, runtime->period_size, + emu->gpr_base + pcm->gpr_tmpcount, runtime->period_size, + REGLIST_END); + for (i = 0; i < pcm->channels; i++) + snd_emu10k1_ptr_write(emu, TANKMEMADDRREGBASE + 0x80 + pcm->etram[i], 0, (TANKMEMADDRREG_READ|TANKMEMADDRREG_ALIGN) + i * (runtime->buffer_size / pcm->channels)); + return 0; +} + +static int snd_emu10k1_fx8010_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + int result = 0; + + spin_lock(&emu->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + /* follow thru */ + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_RESUME: +#ifdef EMU10K1_SET_AC3_IEC958 + { + int i; + for (i = 0; i < 3; i++) { + unsigned int bits; + bits = SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 | + SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC | SPCS_GENERATIONSTATUS | + 0x00001200 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT | SPCS_NOTAUDIODATA; + snd_emu10k1_ptr_write(emu, SPCS0 + i, 0, bits); + } + } +#endif + result = snd_emu10k1_fx8010_register_irq_handler(emu, snd_emu10k1_fx8010_playback_irq, pcm->gpr_running, substream, &pcm->irq); + if (result < 0) + goto __err; + snd_emu10k1_fx8010_playback_transfer(substream); /* roll the ball */ + snd_emu10k1_ptr_write(emu, emu->gpr_base + pcm->gpr_trigger, 0, 1); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_SUSPEND: + snd_emu10k1_fx8010_unregister_irq_handler(emu, &pcm->irq); + snd_emu10k1_ptr_write(emu, emu->gpr_base + pcm->gpr_trigger, 0, 0); + pcm->tram_pos = INITIAL_TRAM_POS(pcm->buffer_size); + pcm->tram_shift = 0; + break; + default: + result = -EINVAL; + break; + } + __err: + spin_unlock(&emu->reg_lock); + return result; +} + +static snd_pcm_uframes_t snd_emu10k1_fx8010_playback_pointer(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + size_t ptr; /* byte pointer */ + + if (!snd_emu10k1_ptr_read(emu, emu->gpr_base + pcm->gpr_trigger, 0)) + return 0; + ptr = snd_emu10k1_ptr_read(emu, emu->gpr_base + pcm->gpr_ptr, 0) << 2; + return snd_pcm_indirect_playback_pointer(substream, &pcm->pcm_rec, ptr); +} + +static const struct snd_pcm_hardware snd_emu10k1_fx8010_playback = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_RESUME | + /* SNDRV_PCM_INFO_MMAP_VALID | */ SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_SYNC_APPLPTR), + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 1, + .buffer_bytes_max = (128*1024), + .period_bytes_min = 1024, + .period_bytes_max = (128*1024), + .periods_min = 2, + .periods_max = 1024, + .fifo_size = 0, +}; + +static int snd_emu10k1_fx8010_playback_open(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + + runtime->hw = snd_emu10k1_fx8010_playback; + runtime->hw.channels_min = runtime->hw.channels_max = pcm->channels; + runtime->hw.period_bytes_max = (pcm->buffer_size * 2) / 2; + spin_lock_irq(&emu->reg_lock); + if (pcm->valid == 0) { + spin_unlock_irq(&emu->reg_lock); + return -ENODEV; + } + pcm->opened = 1; + spin_unlock_irq(&emu->reg_lock); + return 0; +} + +static int snd_emu10k1_fx8010_playback_close(struct snd_pcm_substream *substream) +{ + struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream); + struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number]; + + spin_lock_irq(&emu->reg_lock); + pcm->opened = 0; + spin_unlock_irq(&emu->reg_lock); + return 0; +} + +static const struct snd_pcm_ops snd_emu10k1_fx8010_playback_ops = { + .open = snd_emu10k1_fx8010_playback_open, + .close = snd_emu10k1_fx8010_playback_close, + .hw_free = snd_emu10k1_fx8010_playback_hw_free, + .prepare = snd_emu10k1_fx8010_playback_prepare, + .trigger = snd_emu10k1_fx8010_playback_trigger, + .pointer = snd_emu10k1_fx8010_playback_pointer, + .ack = snd_emu10k1_fx8010_playback_transfer, +}; + +int snd_emu10k1_pcm_efx(struct snd_emu10k1 *emu, int device) +{ + struct snd_pcm *pcm; + struct snd_kcontrol *kctl; + int err; + + err = snd_pcm_new(emu->card, "emu10k1 efx", device, emu->audigy ? 0 : 8, 1, &pcm); + if (err < 0) + return err; + + pcm->private_data = emu; + + if (!emu->audigy) + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_fx8010_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_efx_ops); + + pcm->info_flags = 0; + if (emu->audigy) + strcpy(pcm->name, "Multichannel Capture"); + else + strcpy(pcm->name, "Multichannel Capture/PT Playback"); + emu->pcm_efx = pcm; + + if (!emu->card_capabilities->emu_model) { + // On Sound Blasters, the DSP code copies the EXTINs to FXBUS2. + // The mask determines which of these and the EXTOUTs the multi- + // channel capture actually records (the channel order is fixed). + if (emu->audigy) { + emu->efx_voices_mask[0] = 0; + emu->efx_voices_mask[1] = 0xffff; + } else { + emu->efx_voices_mask[0] = 0xffff0000; + emu->efx_voices_mask[1] = 0; + } + kctl = snd_ctl_new1(&snd_emu10k1_pcm_efx_voices_mask, emu); + if (!kctl) + return -ENOMEM; + kctl->id.device = device; + err = snd_ctl_add(emu->card, kctl); + if (err < 0) + return err; + } else { + // On E-MU cards, the DSP code copies the P16VINs/EMU32INs to + // FXBUS2. These are already selected & routed by the FPGA, + // so there is no need to apply additional masking. + } + + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &emu->pci->dev, + 64*1024, 64*1024); + + return 0; +} |