@@ -1706,6 +1706,7 @@ struct snd_emu10k1 {
unsigned int address_mode; /* address mode */
unsigned long dma_mask; /* PCI DMA mask */
bool iommu_workaround; /* IOMMU workaround needed */
+ bool das_mode; /* Alternative E-MU Digital Audio System mode */
int max_cache_pages; /* max memory size / PAGE_SIZE */
struct snd_dma_buffer silent_page; /* silent page */
struct snd_dma_buffer ptb_pages; /* page table pages */
@@ -1735,6 +1736,7 @@ struct snd_emu10k1 {
struct snd_pcm *pcm_mic;
struct snd_pcm *pcm_efx;
struct snd_pcm *pcm_multi;
+ struct snd_pcm *pcm_das;
struct snd_pcm *pcm_p16v;
spinlock_t synth_lock;
@@ -1801,17 +1803,19 @@ struct snd_emu10k1 {
int snd_emu10k1_create(struct snd_card *card,
struct pci_dev *pci,
+ bool emu_das,
unsigned short extin_mask,
unsigned short extout_mask,
long max_cache_bytes,
int enable_ir,
uint subsystem);
int snd_emu10k1_pcm(struct snd_emu10k1 *emu, int device);
int snd_emu10k1_pcm_mic(struct snd_emu10k1 *emu, int device);
int snd_emu10k1_pcm_efx(struct snd_emu10k1 *emu, int device);
int snd_p16v_pcm(struct snd_emu10k1 *emu, int device);
int snd_p16v_mixer(struct snd_emu10k1 * emu);
+int snd_emu10k1_pcm_das(struct snd_emu10k1 *emu, int device);
int snd_emu10k1_pcm_multi(struct snd_emu10k1 *emu, int device);
int snd_emu10k1_fx8010_pcm(struct snd_emu10k1 *emu, int device);
int snd_emu10k1_mixer(struct snd_emu10k1 * emu, int pcm_device, int multi_device);
@@ -25,6 +25,7 @@ MODULE_LICENSE("GPL");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
+static bool emu_das[SNDRV_CARDS];
static int extin[SNDRV_CARDS];
static int extout[SNDRV_CARDS];
static int seq_ports[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4};
@@ -39,6 +40,8 @@ module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for the EMU10K1 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable the EMU10K1 soundcard.");
+module_param_array(emu_das, bool, NULL, 0444);
+MODULE_PARM_DESC(emu_das, "Use alternative E-MU Digital Audio System mode.");
module_param_array(extin, int, NULL, 0444);
MODULE_PARM_DESC(extin, "Available external inputs for FX8010. Zero=default.");
module_param_array(extout, int, NULL, 0444);
@@ -93,22 +96,27 @@ static int snd_card_emu10k1_probe(struct pci_dev *pci,
max_buffer_size[dev] = 32;
else if (max_buffer_size[dev] > 1024)
max_buffer_size[dev] = 1024;
- err = snd_emu10k1_create(card, pci, extin[dev], extout[dev],
+ err = snd_emu10k1_create(card, pci, emu_das[dev], extin[dev], extout[dev],
(long)max_buffer_size[dev] * 1024 * 1024,
enable_ir[dev], subsystem[dev]);
if (err < 0)
return err;
- err = snd_emu10k1_pcm(emu, 0);
+ if (emu->das_mode)
+ err = snd_emu10k1_pcm_das(emu, 0);
+ else
+ err = snd_emu10k1_pcm(emu, 0);
if (err < 0)
return err;
if (emu->card_capabilities->ac97_chip) {
err = snd_emu10k1_pcm_mic(emu, 1);
if (err < 0)
return err;
}
- err = snd_emu10k1_pcm_efx(emu, 2);
- if (err < 0)
- return err;
+ if (!emu->das_mode) {
+ err = snd_emu10k1_pcm_efx(emu, 2);
+ if (err < 0)
+ return err;
+ }
/* This stores the periods table. */
if (emu->card_capabilities->ca0151_chip) { /* P16V */
emu->p16v_buffer =
@@ -125,9 +133,11 @@ static int snd_card_emu10k1_probe(struct pci_dev *pci,
if (err < 0)
return err;
- err = snd_emu10k1_pcm_multi(emu, 3);
- if (err < 0)
- return err;
+ if (!emu->das_mode) {
+ err = snd_emu10k1_pcm_multi(emu, 3);
+ if (err < 0)
+ return err;
+ }
if (emu->card_capabilities->ca0151_chip) { /* P16V */
err = snd_p16v_pcm(emu, 4);
if (err < 0)
@@ -146,7 +156,8 @@ static int snd_card_emu10k1_probe(struct pci_dev *pci,
if (err < 0)
return err;
#ifdef ENABLE_SYNTH
- if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
+ if (emu->das_mode) {
+ } else if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
sizeof(struct snd_emu10k1_synth_arg), &wave) < 0 ||
wave == NULL) {
dev_warn(emu->card->dev,
@@ -1505,6 +1505,7 @@ static void snd_emu10k1_detect_iommu(struct snd_emu10k1 *emu)
int snd_emu10k1_create(struct snd_card *card,
struct pci_dev *pci,
+ bool emu_das,
unsigned short extin_mask,
unsigned short extout_mask,
long max_cache_bytes,
@@ -1584,8 +1585,19 @@ int snd_emu10k1_create(struct snd_card *card,
c->name, pci->vendor, pci->device,
emu->serial);
- if (!*card->id && c->id)
+ if (c->emu_model) {
+ if (emu_das)
+ emu->das_mode = 1;
+ else
+ dev_notice(card->dev,
+ "You may want to use emu_das=1 with your %s\n", c->name);
+ }
+
+ if (!*card->id && c->id) {
strscpy(card->id, c->id, sizeof(card->id));
+ if (emu->das_mode)
+ strlcat(card->id, "das", sizeof(card->id));
+ }
is_audigy = emu->audigy = c->emu10k2_chip;
@@ -1271,6 +1271,96 @@ static void snd_emu10k1_audigy_dsp_convert_32_to_2x16(
#define ENUM_GPR(name, size) name, name ## _dummy = name + (size) - 1
+/*
+ * initial DSP configuration for E-MU Digital Audio System
+ */
+
+static int _snd_emu10k1_das_init_efx(struct snd_emu10k1 *emu)
+{
+ enum {
+ ENUM_GPR(bit_shifter16, 1),
+ ENUM_GPR(tmp, 1),
+ num_static_gprs
+ };
+ int gpr = num_static_gprs;
+ u32 *gpr_map;
+ u32 ptr = 0;
+
+ int err = -ENOMEM;
+ struct snd_emu10k1_fx8010_code *icode = kzalloc(sizeof(*icode), GFP_KERNEL);
+ if (!icode)
+ return err;
+
+ icode->gpr_map = kcalloc(512 + 256 + 256 + 2 * 1024,
+ sizeof(u_int32_t), GFP_KERNEL);
+ if (!icode->gpr_map)
+ goto __err_gpr;
+
+ icode->tram_data_map = icode->gpr_map + 512;
+ icode->tram_addr_map = icode->tram_data_map + 256;
+ icode->code = icode->tram_addr_map + 256;
+
+ /* clear free GPRs */
+ memset(icode->gpr_valid, 0xff, sizeof(icode->gpr_valid));
+
+ /* clear TRAM data & address lines */
+ memset(icode->tram_valid, 0xff, sizeof(icode->tram_valid));
+
+ strcpy(icode->name, "E-MU DSP code for ALSA");
+
+ gpr_map = icode->gpr_map;
+ gpr_map[bit_shifter16] = 0x00008000;
+
+ if (emu->card_capabilities->ca0108_chip) {
+ for (int z = 0; z < 16; z++)
+ A_OP(icode, &ptr, iMACINT0, A3_EMU32OUT(z), A_C_00000000, A_FXBUS(z), A_C_00000002);
+
+ snd_emu10k1_audigy_dsp_convert_32_to_2x16(
+ icode, &ptr, tmp, bit_shifter16, A3_EMU32IN(0), A_EXTOUT(0));
+ // A3_EMU32IN(0) is delayed by one sample, so all other A3_EMU32IN channels
+ // need to be delayed as well; we use an auxiliary register for that.
+ for (int z = 1; z < 16; z++) {
+ snd_emu10k1_audigy_dsp_convert_32_to_2x16(
+ icode, &ptr, tmp, bit_shifter16, A_GPR(gpr), A_EXTOUT(z * 2));
+ A_OP(icode, &ptr, iACC3, A_GPR(gpr), A3_EMU32IN(z), A_C_00000000, A_C_00000000);
+ gpr_map[gpr++] = 0x00000000;
+ }
+ } else {
+ for (int z = 0; z < 16; z++)
+ A_OP(icode, &ptr, iMACINT0, A_EMU32OUTL(z), A_C_00000000, A_FXBUS(z), A_C_00000002);
+
+ /* Note that the Alice2 DSPs have 6 I2S inputs which we don't use. */
+ snd_emu10k1_audigy_dsp_convert_32_to_2x16(
+ icode, &ptr, tmp, bit_shifter16, A_P16VIN(0), A_EXTOUT(0));
+ // A_P16VIN(0) is delayed by one sample, so all other A_P16VIN channels
+ // need to be delayed as well; we use an auxiliary register for that.
+ for (int z = 1; z < 16; z++) {
+ snd_emu10k1_audigy_dsp_convert_32_to_2x16(
+ icode, &ptr, tmp, bit_shifter16, A_GPR(gpr), A_EXTOUT(z * 2));
+ A_OP(icode, &ptr, iACC3, A_GPR(gpr), A_P16VIN(z), A_C_00000000, A_C_00000000);
+ gpr_map[gpr++] = 0x00000000;
+ }
+ }
+
+ if (gpr > 512) {
+ snd_BUG();
+ err = -EIO;
+ goto __err;
+ }
+
+ /* clear remaining instruction memory */
+ while (ptr < 0x400)
+ A_OP(icode, &ptr, 0x0f, 0xc0, 0xc0, 0xcf, 0xc0);
+
+ err = snd_emu10k1_icode_poke(emu, icode, true);
+
+__err:
+ kfree(icode->gpr_map);
+__err_gpr:
+ kfree(icode);
+ return err;
+}
+
/*
* initial DSP configuration for Audigy
*/
@@ -2365,7 +2455,9 @@ int snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
{
spin_lock_init(&emu->fx8010.irq_lock);
INIT_LIST_HEAD(&emu->fx8010.gpr_ctl);
- if (emu->audigy)
+ if (emu->das_mode)
+ return _snd_emu10k1_das_init_efx(emu);
+ else if (emu->audigy)
return _snd_emu10k1_audigy_init_efx(emu);
else
return _snd_emu10k1_init_efx(emu);
@@ -2213,51 +2213,56 @@ int snd_emu10k1_mixer(struct snd_emu10k1 *emu,
rename_ctl(card, "Aux2 Capture Volume", "Line3 Capture Volume");
rename_ctl(card, "Mic Capture Volume", "Unknown1 Capture Volume");
}
- kctl = emu->ctl_send_routing = snd_ctl_new1(&snd_emu10k1_send_routing_control, emu);
- if (!kctl)
- return -ENOMEM;
- kctl->id.device = pcm_device;
- err = snd_ctl_add(card, kctl);
- if (err)
- return err;
- kctl = emu->ctl_send_volume = snd_ctl_new1(&snd_emu10k1_send_volume_control, emu);
- if (!kctl)
- return -ENOMEM;
- kctl->id.device = pcm_device;
- err = snd_ctl_add(card, kctl);
- if (err)
- return err;
- kctl = emu->ctl_attn = snd_ctl_new1(&snd_emu10k1_attn_control, emu);
- if (!kctl)
- return -ENOMEM;
- kctl->id.device = pcm_device;
- err = snd_ctl_add(card, kctl);
- if (err)
- return err;
- kctl = emu->ctl_efx_send_routing = snd_ctl_new1(&snd_emu10k1_efx_send_routing_control, emu);
- if (!kctl)
- return -ENOMEM;
- kctl->id.device = multi_device;
- err = snd_ctl_add(card, kctl);
- if (err)
- return err;
-
- kctl = emu->ctl_efx_send_volume = snd_ctl_new1(&snd_emu10k1_efx_send_volume_control, emu);
- if (!kctl)
- return -ENOMEM;
- kctl->id.device = multi_device;
- err = snd_ctl_add(card, kctl);
- if (err)
- return err;
-
- kctl = emu->ctl_efx_attn = snd_ctl_new1(&snd_emu10k1_efx_attn_control, emu);
- if (!kctl)
- return -ENOMEM;
- kctl->id.device = multi_device;
- err = snd_ctl_add(card, kctl);
- if (err)
- return err;
+ if (!emu->das_mode) {
+ kctl = emu->ctl_send_routing = snd_ctl_new1(&snd_emu10k1_send_routing_control, emu);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->id.device = pcm_device;
+ err = snd_ctl_add(card, kctl);
+ if (err)
+ return err;
+
+ kctl = emu->ctl_send_volume = snd_ctl_new1(&snd_emu10k1_send_volume_control, emu);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->id.device = pcm_device;
+ err = snd_ctl_add(card, kctl);
+ if (err)
+ return err;
+
+ kctl = emu->ctl_attn = snd_ctl_new1(&snd_emu10k1_attn_control, emu);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->id.device = pcm_device;
+ err = snd_ctl_add(card, kctl);
+ if (err)
+ return err;
+
+ kctl = emu->ctl_efx_send_routing = snd_ctl_new1(&snd_emu10k1_efx_send_routing_control, emu);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->id.device = multi_device;
+ err = snd_ctl_add(card, kctl);
+ if (err)
+ return err;
+
+ kctl = emu->ctl_efx_send_volume = snd_ctl_new1(&snd_emu10k1_efx_send_volume_control, emu);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->id.device = multi_device;
+ err = snd_ctl_add(card, kctl);
+ if (err)
+ return err;
+
+ kctl = emu->ctl_efx_attn = snd_ctl_new1(&snd_emu10k1_efx_attn_control, emu);
+ if (!kctl)
+ return -ENOMEM;
+ kctl->id.device = multi_device;
+ err = snd_ctl_add(card, kctl);
+ if (err)
+ return err;
+ }
if (!emu->card_capabilities->ecard && !emu->card_capabilities->emu_model) {
/* sb live! and audigy */
@@ -353,6 +353,22 @@ static void snd_emu10k1_pcm_init_voices(struct snd_emu10k1 *emu,
spin_unlock_irq(&emu->reg_lock);
}
+static void snd_emu10k1_pcm_init_das_voices(struct snd_emu10k1 *emu,
+ struct snd_emu10k1_voice *evoice,
+ unsigned int start_addr,
+ unsigned int end_addr,
+ unsigned char channel)
+{
+ static const unsigned char send_amount[8] = { 255, 0, 0, 0, 0, 0, 0, 0 };
+ unsigned char send_routing[8];
+
+ for (int i = 0; i < ARRAY_SIZE(send_routing); i++)
+ send_routing[i] = (channel + i) % NUM_G;
+ snd_emu10k1_pcm_init_voice(emu, evoice, true, false,
+ start_addr, end_addr,
+ send_routing, send_amount);
+}
+
static void snd_emu10k1_pcm_init_extra_voice(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice,
bool w_16,
@@ -472,6 +488,7 @@ 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;
+ bool das_mode = emu->das_mode;
unsigned int start_addr;
unsigned int extra_size, channel_size;
unsigned int i;
@@ -487,11 +504,20 @@ static int snd_emu10k1_efx_playback_prepare(struct snd_pcm_substream *substream)
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;
+ if (das_mode) {
+ for (i = 0; i < runtime->channels; i++) {
+ snd_emu10k1_pcm_init_das_voices(emu, epcm->voices[i],
+ start_addr, start_addr + channel_size,
+ i);
+ start_addr += channel_size;
+ }
+ } else {
+ 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;
@@ -531,10 +557,16 @@ static int snd_emu10k1_capture_prepare(struct snd_pcm_substream *substream)
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);
+ unsigned mask = 0xffffffff >> (32 - runtime->channels * 2);
+ if (emu->das_mode) {
+ epcm->capture_cr_val = mask;
+ epcm->capture_cr_val2 = 0;
+ } else {
+ // 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 = mask;
+ }
}
if (emu->audigy) {
snd_emu10k1_ptr_write_multiple(emu, 0,
@@ -680,6 +712,12 @@ static void snd_emu10k1_playback_unmute_voices(struct snd_emu10k1 *emu,
snd_emu10k1_playback_unmute_voice(emu, evoice + 1, true, false, mix);
}
+static void snd_emu10k1_playback_unmute_das_voices(struct snd_emu10k1 *emu,
+ struct snd_emu10k1_voice *evoice)
+{
+ snd_emu10k1_playback_commit_volume(emu, evoice, 0x8000 << 16);
+}
+
static void snd_emu10k1_playback_mute_voice(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice)
{
@@ -923,6 +961,14 @@ static void snd_emu10k1_efx_playback_unmute_voices(struct snd_emu10k1 *emu,
&emu->efx_pcm_mixer[i]);
}
+static void snd_emu10k1_efx_playback_unmute_das_voices(struct snd_emu10k1 *emu,
+ struct snd_emu10k1_pcm *epcm,
+ int channels)
+{
+ for (int i = 0; i < channels; i++)
+ snd_emu10k1_playback_unmute_das_voices(emu, epcm->voices[i]);
+}
+
static void snd_emu10k1_efx_playback_stop_voices(struct snd_emu10k1 *emu,
struct snd_emu10k1_pcm *epcm,
int channels)
@@ -941,6 +987,7 @@ static int snd_emu10k1_efx_playback_trigger(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 das_mode = emu->das_mode;
u64 mask;
int result = 0;
@@ -964,7 +1011,12 @@ static int snd_emu10k1_efx_playback_trigger(struct snd_pcm_substream *substream,
// 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);
+ if (das_mode)
+ snd_emu10k1_efx_playback_unmute_das_voices(
+ emu, epcm, runtime->channels);
+ else
+ 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);
@@ -1130,6 +1182,8 @@ static int snd_emu10k1_efx_playback_close(struct snd_pcm_substream *substream)
struct snd_emu10k1_pcm_mixer *mix;
int i;
+ if (emu->das_mode)
+ return 0;
for (i = 0; i < NUM_EFX_PLAYBACK; i++) {
mix = &emu->efx_pcm_mixer[i];
mix->epcm = NULL;
@@ -1180,6 +1234,8 @@ static int snd_emu10k1_efx_playback_open(struct snd_pcm_substream *substream)
return err;
}
+ if (emu->das_mode)
+ return 0;
for (i = 0; i < NUM_EFX_PLAYBACK; i++) {
mix = &emu->efx_pcm_mixer[i];
for (j = 0; j < 8; j++)
@@ -1864,12 +1920,41 @@ int snd_emu10k1_pcm_efx(struct snd_emu10k1 *emu, int device)
return err;
} else {
// On E-MU cards, the DSP code copies the P16VINs/EMU32INs to
- // FXBUS2. These are already selected & routed by the FPGA,
+ // EXTOUT/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;
}
+
+int snd_emu10k1_pcm_das(struct snd_emu10k1 *emu, int device)
+{
+ struct snd_pcm *pcm;
+ struct snd_pcm_substream *substream;
+
+ int err = snd_pcm_new(emu->card, "emu10k1 efx", device, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+
+ pcm->private_data = emu;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1_efx_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1_capture_efx_ops);
+
+ strcpy(pcm->name, "Multichannel Playback/Capture");
+ emu->pcm_das = pcm;
+
+ // Playback substream can't use managed buffers due to IOMMU workaround
+ substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+ snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG,
+ &emu->pci->dev, 64*1024, 64*1024);
+
+ substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
+ snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
+ &emu->pci->dev, 64*1024, 64*1024);
+
+ return 0;
+}
@@ -80,6 +80,11 @@ static void snd_emu10k1_proc_read(struct snd_info_entry *entry,
snd_iprintf(buffer, "Internal TRAM (words) : 0x%x\n", emu->fx8010.itram_size);
snd_iprintf(buffer, "External TRAM (words) : 0x%x\n", (int)emu->fx8010.etram_pages.bytes / 2);
+ // The following are internal details in D.A.S. mode,
+ // so there is no use in displaying them to the user.
+ if (emu->das_mode)
+ return;
+
snd_iprintf(buffer, "\nEffect Send Routing & Amounts:\n");
for (idx = 0; idx < NUM_G; idx++) {
ptrx = snd_emu10k1_ptr_read(emu, PTRX, idx);
As noted in a previous commit, the E-MU Digital Audio System cards don't try very hard to be Sound Blasters. This commit takes it further and introduces a module option to switch to a completely separate mode. In that mode: - The regular PCM playback/capture devices are removed - The multi-channel playback/capture devices get index 0 - Consequently, the regular mixer controls are also completely removed, as the multi-channel devices already bypassed them. This is no real loss, given the expected use with a sound server. - The voice send routing+amount & attenuation controls are also removed, as they are just another mixer. The routing is redundant with the FPGA channel routing, and amounts/att'n can be done in software. The hardware implementation of the latter is also incompatible with 32-bit playback, which we'll add support for later. - A_EXTOUT is now also free for multi-channel capture, so we use that instead of A_FXBUS2 - this will later simplify using both at once. - For the same reason, the FX outputs are not listed in /proc anymore - The device name is changed, so mixer settings don't get mixed up This continues the pre-existing design with a single multi-channel device where the channels are routed by manual mixer controls from/to the physical ports. De-/multiplexing must be done by the sound server if independent streams are to be used. An alternative design would be exposing each physical port as a separate device and automatically setting up the routes. This would be a somewhat radical departure from the status quo, and I don't know whether it would be a net benefit. It certainly would be harder to implement, as it would require sync start of streams and a channel allocator (the latter would have the added benefit of properly reporting EMU32 & EDI bus over- allocation, which the mixer does not). And there is only one big multi- channel capture engine, so streams would have to be de-multiplexed by the driver in software - which seems a bit counter-productive if the sound server would re-multiplex them again. Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de> --- v3: - commit message wording improvements --- include/sound/emu10k1.h | 4 ++ sound/pci/emu10k1/emu10k1.c | 29 ++++++--- sound/pci/emu10k1/emu10k1_main.c | 14 +++- sound/pci/emu10k1/emufx.c | 94 ++++++++++++++++++++++++++- sound/pci/emu10k1/emumixer.c | 93 ++++++++++++++------------- sound/pci/emu10k1/emupcm.c | 107 +++++++++++++++++++++++++++---- sound/pci/emu10k1/emuproc.c | 5 ++ 7 files changed, 280 insertions(+), 66 deletions(-)