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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /sound/pci/emu10k1/emupcm.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/pci/emu10k1/emupcm.c')
-rw-r--r--sound/pci/emu10k1/emupcm.c1875
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;
+}