From 001f758990d685e7023008763795f1970ef56614 Mon Sep 17 00:00:00 2001 From: James Courtier-Dutton Date: Sat, 9 Apr 2005 23:38:25 +0200 Subject: [PATCH] [ALSA] Improve SPDIF playback via the P16V/CA0151 chip. EMU10K1/EMU10K2 driver Although we can set 44100 as the output rate, the SPDIF can do it, but the Analog output cannot. The SPDIF has the bug, whereby the Left channel arrives one sample late, so although we don't do any resampling, it is not good for AC3 non-audio output. Signed-off-by: James Courtier-Dutton --- include/sound/emu10k1.h | 1 + sound/pci/emu10k1/emumixer.c | 2 ++ sound/pci/emu10k1/emuproc.c | 21 +++++++++++++++++++++ sound/pci/emu10k1/p16v.c | 16 +++++++--------- 4 files changed, 31 insertions(+), 9 deletions(-) diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h index f5babd3f84..61a3f418f3 100644 --- a/include/sound/emu10k1.h +++ b/include/sound/emu10k1.h @@ -747,6 +747,7 @@ /* Assumes sample lock */ /* These three bitfields apply to CDSRCS, GPSRCS, and (except as noted) ZVSRCS. */ +#define SRCS_SPDIFVALID 0x04000000 /* SPDIF stream valid */ #define SRCS_SPDIFLOCKED 0x02000000 /* SPDIF stream locked */ #define SRCS_RATELOCKED 0x01000000 /* Sample rate locked */ #define SRCS_ESTSAMPLERATE 0x0007ffff /* Do not modify this field. */ diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c index d0b296587c..b544c25826 100644 --- a/sound/pci/emu10k1/emumixer.c +++ b/sound/pci/emu10k1/emumixer.c @@ -935,10 +935,12 @@ int __devinit snd_emu10k1_mixer(emu10k1_t *emu) return -ENOMEM; if ((err = snd_ctl_add(card, kctl))) return err; +#if 0 if ((kctl = snd_ctl_new1(&snd_audigy_spdif_output_rate, emu)) == NULL) return -ENOMEM; if ((err = snd_ctl_add(card, kctl))) return err; +#endif } else if (! emu->card_capabilities->ecard) { /* sb live! */ if ((kctl = snd_ctl_new1(&snd_emu10k1_shared_spdif, emu)) == NULL) diff --git a/sound/pci/emu10k1/emuproc.c b/sound/pci/emu10k1/emuproc.c index 187a4e60a5..356fb71042 100644 --- a/sound/pci/emu10k1/emuproc.c +++ b/sound/pci/emu10k1/emuproc.c @@ -30,6 +30,7 @@ #include #include #include +#include "p16v.h" static void snd_emu10k1_proc_spdif_status(emu10k1_t * emu, snd_info_buffer_t * buffer, @@ -62,6 +63,7 @@ static void snd_emu10k1_proc_spdif_status(emu10k1_t * emu, if (rate_reg > 0) { rate = snd_emu10k1_ptr_read(emu, rate_reg, 0); + snd_iprintf(buffer, "S/PDIF Valid : %s\n", rate & SRCS_SPDIFVALID ? "on" : "off"); snd_iprintf(buffer, "S/PDIF Locked : %s\n", rate & SRCS_SPDIFLOCKED ? "on" : "off"); snd_iprintf(buffer, "Rate Locked : %s\n", rate & SRCS_RATELOCKED ? "on" : "off"); /* From ((Rate * 48000 ) / 262144); */ @@ -244,6 +246,21 @@ static void snd_emu10k1_proc_spdif_read(snd_info_entry_t *entry, #endif } +static void snd_emu10k1_proc_rates_read(snd_info_entry_t *entry, + snd_info_buffer_t * buffer) +{ + static int samplerate[8] = { 44100, 48000, 96000, 192000, 4, 5, 6, 7 }; + emu10k1_t *emu = entry->private_data; + unsigned int val, tmp, n; + val = snd_emu10k1_ptr20_read(emu, CAPTURE_RATE_STATUS, 0); + tmp = (val >> 16) & 0x8; + for (n=0;n<4;n++) { + tmp = val >> (16 + (n*4)); + if (tmp & 0x8) snd_iprintf(buffer, "Channel %d: Rate=%d\n", n, samplerate[tmp & 0x7]); + else snd_iprintf(buffer, "Channel %d: No input\n", n); + } +} + static void snd_emu10k1_proc_acode_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer) { @@ -540,6 +557,10 @@ int __devinit snd_emu10k1_proc_init(emu10k1_t * emu) if (! snd_card_proc_new(emu->card, "spdif-in", &entry)) snd_info_set_text_ops(entry, emu, 2048, snd_emu10k1_proc_spdif_read); } + if (emu->card_capabilities->ca0151_chip) { + if (! snd_card_proc_new(emu->card, "capture-rates", &entry)) + snd_info_set_text_ops(entry, emu, 2048, snd_emu10k1_proc_rates_read); + } if (! snd_card_proc_new(emu->card, "voices", &entry)) snd_info_set_text_ops(entry, emu, 2048, snd_emu10k1_proc_voices_read); diff --git a/sound/pci/emu10k1/p16v.c b/sound/pci/emu10k1/p16v.c index dd6ce9927e..8dd87838fb 100644 --- a/sound/pci/emu10k1/p16v.c +++ b/sound/pci/emu10k1/p16v.c @@ -119,8 +119,8 @@ static snd_pcm_hardware_t snd_p16v_playback_hw = { SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), .formats = SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */ - .rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 , - .rate_min = 48000, + .rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, + .rate_min = 44100, .rate_max = 192000, .channels_min = 8, .channels_max = 8, @@ -324,19 +324,17 @@ static int snd_p16v_pcm_prepare_playback(snd_pcm_substream_t *substream) tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel); switch (runtime->rate) { case 44100: - snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe000) | 0x8000); /* FIXME: This will change the capture rate as well! */ - break; - case 48000: - snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe000) | 0x0000); /* FIXME: This will change the capture rate as well! */ + snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080); break; case 96000: - snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe000) | 0x4000); /* FIXME: This will change the capture rate as well! */ + snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040); break; case 192000: - snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe000) | 0x2000); /* FIXME: This will change the capture rate as well! */ + snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020); break; + case 48000: default: - snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, 0x0000); /* FIXME: This will change the capture rate as well! */ + snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000); break; } /* FIXME: Check emu->buffer.size before actually writing to it. */ -- 2.39.5