From b892ca1c9fe71e829e7b9ed79b8398649de259d7 Mon Sep 17 00:00:00 2001 From: Knut Petersen Date: Tue, 13 Aug 2013 21:18:12 +0200 Subject: [PATCH] ALSA: rme96: Add pcm stream synchronization The hardware does support synchronized start/pause/stop of pcm streams, so there is no reason not to add that feature after more than ten years. Some minor coding style / white space fixes in the surroundings of the changes. Signed-off-by: Knut Petersen Signed-off-by: Takashi Iwai --- sound/pci/rme96.c | 185 +++++++++++++++++++++++++++------------------- 1 file changed, 110 insertions(+), 75 deletions(-) diff --git a/sound/pci/rme96.c b/sound/pci/rme96.c index 2a8ad9d1a2ae..4e9a5563eeca 100644 --- a/sound/pci/rme96.c +++ b/sound/pci/rme96.c @@ -198,6 +198,31 @@ MODULE_PARM_DESC(enable, "Enable RME Digi96 soundcard."); #define RME96_AD1852_VOL_BITS 14 #define RME96_AD1855_VOL_BITS 10 +/* Defines for snd_rme96_trigger */ +#define RME96_TB_START_PLAYBACK 1 +#define RME96_TB_START_CAPTURE 2 +#define RME96_TB_STOP_PLAYBACK 4 +#define RME96_TB_STOP_CAPTURE 8 +#define RME96_TB_RESET_PLAYPOS 16 +#define RME96_TB_RESET_CAPTUREPOS 32 +#define RME96_TB_CLEAR_PLAYBACK_IRQ 64 +#define RME96_TB_CLEAR_CAPTURE_IRQ 128 +#define RME96_RESUME_PLAYBACK (RME96_TB_START_PLAYBACK) +#define RME96_RESUME_CAPTURE (RME96_TB_START_CAPTURE) +#define RME96_RESUME_BOTH (RME96_RESUME_PLAYBACK \ + | RME96_RESUME_CAPTURE) +#define RME96_START_PLAYBACK (RME96_TB_START_PLAYBACK \ + | RME96_TB_RESET_PLAYPOS) +#define RME96_START_CAPTURE (RME96_TB_START_CAPTURE \ + | RME96_TB_RESET_CAPTUREPOS) +#define RME96_START_BOTH (RME96_START_PLAYBACK \ + | RME96_START_CAPTURE) +#define RME96_STOP_PLAYBACK (RME96_TB_STOP_PLAYBACK \ + | RME96_TB_CLEAR_PLAYBACK_IRQ) +#define RME96_STOP_CAPTURE (RME96_TB_STOP_CAPTURE \ + | RME96_TB_CLEAR_CAPTURE_IRQ) +#define RME96_STOP_BOTH (RME96_STOP_PLAYBACK \ + | RME96_STOP_CAPTURE) struct rme96 { spinlock_t lock; @@ -344,6 +369,7 @@ static struct snd_pcm_hardware snd_rme96_playback_spdif_info = { .info = (SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_SYNC_START | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_PAUSE), .formats = (SNDRV_PCM_FMTBIT_S16_LE | @@ -373,6 +399,7 @@ static struct snd_pcm_hardware snd_rme96_capture_spdif_info = { .info = (SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_SYNC_START | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_PAUSE), .formats = (SNDRV_PCM_FMTBIT_S16_LE | @@ -402,6 +429,7 @@ static struct snd_pcm_hardware snd_rme96_playback_adat_info = { .info = (SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_SYNC_START | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_PAUSE), .formats = (SNDRV_PCM_FMTBIT_S16_LE | @@ -427,6 +455,7 @@ static struct snd_pcm_hardware snd_rme96_capture_adat_info = { .info = (SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_SYNC_START | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_PAUSE), .formats = (SNDRV_PCM_FMTBIT_S16_LE | @@ -1045,54 +1074,35 @@ snd_rme96_capture_hw_params(struct snd_pcm_substream *substream, } static void -snd_rme96_playback_start(struct rme96 *rme96, - int from_pause) +snd_rme96_trigger(struct rme96 *rme96, + int op) { - if (!from_pause) { + if (op & RME96_TB_RESET_PLAYPOS) writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS); - } - - rme96->wcreg |= RME96_WCR_START; - writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER); -} - -static void -snd_rme96_capture_start(struct rme96 *rme96, - int from_pause) -{ - if (!from_pause) { + if (op & RME96_TB_RESET_CAPTUREPOS) writel(0, rme96->iobase + RME96_IO_RESET_REC_POS); - } - - rme96->wcreg |= RME96_WCR_START_2; + if (op & RME96_TB_CLEAR_PLAYBACK_IRQ) { + rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER); + if (rme96->rcreg & RME96_RCR_IRQ) + writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ); + } + if (op & RME96_TB_CLEAR_CAPTURE_IRQ) { + rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER); + if (rme96->rcreg & RME96_RCR_IRQ_2) + writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ); + } + if (op & RME96_TB_START_PLAYBACK) + rme96->wcreg |= RME96_WCR_START; + if (op & RME96_TB_STOP_PLAYBACK) + rme96->wcreg &= ~RME96_WCR_START; + if (op & RME96_TB_START_CAPTURE) + rme96->wcreg |= RME96_WCR_START_2; + if (op & RME96_TB_STOP_CAPTURE) + rme96->wcreg &= ~RME96_WCR_START_2; writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER); } -static void -snd_rme96_playback_stop(struct rme96 *rme96) -{ - /* - * Check if there is an unconfirmed IRQ, if so confirm it, or else - * the hardware will not stop generating interrupts - */ - rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER); - if (rme96->rcreg & RME96_RCR_IRQ) { - writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ); - } - rme96->wcreg &= ~RME96_WCR_START; - writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER); -} -static void -snd_rme96_capture_stop(struct rme96 *rme96) -{ - rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER); - if (rme96->rcreg & RME96_RCR_IRQ_2) { - writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ); - } - rme96->wcreg &= ~RME96_WCR_START_2; - writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER); -} static irqreturn_t snd_rme96_interrupt(int irq, @@ -1155,6 +1165,7 @@ snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream) struct rme96 *rme96 = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_set_sync(substream); spin_lock_irq(&rme96->lock); if (rme96->playback_substream != NULL) { spin_unlock_irq(&rme96->lock); @@ -1191,6 +1202,7 @@ snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream) struct rme96 *rme96 = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_set_sync(substream); runtime->hw = snd_rme96_capture_spdif_info; if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG && (rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) @@ -1222,6 +1234,7 @@ snd_rme96_playback_adat_open(struct snd_pcm_substream *substream) struct rme96 *rme96 = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_set_sync(substream); spin_lock_irq(&rme96->lock); if (rme96->playback_substream != NULL) { spin_unlock_irq(&rme96->lock); @@ -1253,6 +1266,7 @@ snd_rme96_capture_adat_open(struct snd_pcm_substream *substream) struct rme96 *rme96 = snd_pcm_substream_chip(substream); struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_set_sync(substream); runtime->hw = snd_rme96_capture_adat_info; if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) { /* makes no sense to use analog input. Note that analog @@ -1288,7 +1302,7 @@ snd_rme96_playback_close(struct snd_pcm_substream *substream) spin_lock_irq(&rme96->lock); if (RME96_ISPLAYING(rme96)) { - snd_rme96_playback_stop(rme96); + snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK); } rme96->playback_substream = NULL; rme96->playback_periodsize = 0; @@ -1309,7 +1323,7 @@ snd_rme96_capture_close(struct snd_pcm_substream *substream) spin_lock_irq(&rme96->lock); if (RME96_ISRECORDING(rme96)) { - snd_rme96_capture_stop(rme96); + snd_rme96_trigger(rme96, RME96_STOP_CAPTURE); } rme96->capture_substream = NULL; rme96->capture_periodsize = 0; @@ -1324,7 +1338,7 @@ snd_rme96_playback_prepare(struct snd_pcm_substream *substream) spin_lock_irq(&rme96->lock); if (RME96_ISPLAYING(rme96)) { - snd_rme96_playback_stop(rme96); + snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK); } writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS); spin_unlock_irq(&rme96->lock); @@ -1338,7 +1352,7 @@ snd_rme96_capture_prepare(struct snd_pcm_substream *substream) spin_lock_irq(&rme96->lock); if (RME96_ISRECORDING(rme96)) { - snd_rme96_capture_stop(rme96); + snd_rme96_trigger(rme96, RME96_STOP_CAPTURE); } writel(0, rme96->iobase + RME96_IO_RESET_REC_POS); spin_unlock_irq(&rme96->lock); @@ -1350,41 +1364,53 @@ snd_rme96_playback_trigger(struct snd_pcm_substream *substream, int cmd) { struct rme96 *rme96 = snd_pcm_substream_chip(substream); + struct snd_pcm_substream *s; + bool sync; + + snd_pcm_group_for_each_entry(s, substream) { + if (snd_pcm_substream_chip(s) == rme96) + snd_pcm_trigger_done(s, substream); + } + + sync = (rme96->playback_substream && rme96->capture_substream) && + (rme96->playback_substream->group == + rme96->capture_substream->group); switch (cmd) { case SNDRV_PCM_TRIGGER_START: if (!RME96_ISPLAYING(rme96)) { - if (substream != rme96->playback_substream) { + if (substream != rme96->playback_substream) return -EBUSY; - } - snd_rme96_playback_start(rme96, 0); + snd_rme96_trigger(rme96, sync ? RME96_START_BOTH + : RME96_START_PLAYBACK); } break; case SNDRV_PCM_TRIGGER_STOP: if (RME96_ISPLAYING(rme96)) { - if (substream != rme96->playback_substream) { + if (substream != rme96->playback_substream) return -EBUSY; - } - snd_rme96_playback_stop(rme96); + snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH + : RME96_STOP_PLAYBACK); } break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - if (RME96_ISPLAYING(rme96)) { - snd_rme96_playback_stop(rme96); - } + if (RME96_ISPLAYING(rme96)) + snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH + : RME96_STOP_PLAYBACK); break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - if (!RME96_ISPLAYING(rme96)) { - snd_rme96_playback_start(rme96, 1); - } + if (!RME96_ISPLAYING(rme96)) + snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH + : RME96_RESUME_PLAYBACK); break; - + default: return -EINVAL; } + return 0; } @@ -1393,38 +1419,49 @@ snd_rme96_capture_trigger(struct snd_pcm_substream *substream, int cmd) { struct rme96 *rme96 = snd_pcm_substream_chip(substream); + struct snd_pcm_substream *s; + bool sync; + + snd_pcm_group_for_each_entry(s, substream) { + if (snd_pcm_substream_chip(s) == rme96) + snd_pcm_trigger_done(s, substream); + } + + sync = (rme96->playback_substream && rme96->capture_substream) && + (rme96->playback_substream->group == + rme96->capture_substream->group); switch (cmd) { case SNDRV_PCM_TRIGGER_START: if (!RME96_ISRECORDING(rme96)) { - if (substream != rme96->capture_substream) { + if (substream != rme96->capture_substream) return -EBUSY; - } - snd_rme96_capture_start(rme96, 0); + snd_rme96_trigger(rme96, sync ? RME96_START_BOTH + : RME96_START_CAPTURE); } break; case SNDRV_PCM_TRIGGER_STOP: if (RME96_ISRECORDING(rme96)) { - if (substream != rme96->capture_substream) { + if (substream != rme96->capture_substream) return -EBUSY; - } - snd_rme96_capture_stop(rme96); + snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH + : RME96_STOP_CAPTURE); } break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - if (RME96_ISRECORDING(rme96)) { - snd_rme96_capture_stop(rme96); - } + if (RME96_ISRECORDING(rme96)) + snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH + : RME96_STOP_CAPTURE); break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - if (!RME96_ISRECORDING(rme96)) { - snd_rme96_capture_start(rme96, 1); - } + if (!RME96_ISRECORDING(rme96)) + snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH + : RME96_RESUME_CAPTURE); break; - + default: return -EINVAL; } @@ -1505,8 +1542,7 @@ snd_rme96_free(void *private_data) return; } if (rme96->irq >= 0) { - snd_rme96_playback_stop(rme96); - snd_rme96_capture_stop(rme96); + snd_rme96_trigger(rme96, RME96_STOP_BOTH); rme96->areg &= ~RME96_AR_DAC_EN; writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG); free_irq(rme96->irq, (void *)rme96); @@ -1606,8 +1642,7 @@ snd_rme96_create(struct rme96 *rme96) rme96->capture_periodsize = 0; /* make sure playback/capture is stopped, if by some reason active */ - snd_rme96_playback_stop(rme96); - snd_rme96_capture_stop(rme96); + snd_rme96_trigger(rme96, RME96_STOP_BOTH); /* set default values in registers */ rme96->wcreg = -- 2.39.5