diff options
| -rw-r--r-- | sound/mips/au1x00.c | 300 |
1 files changed, 150 insertions, 150 deletions
diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c index d08a42b24b1f..a8f9a3b6e73d 100644 --- a/sound/mips/au1x00.c +++ b/sound/mips/au1x00.c @@ -50,12 +50,7 @@ MODULE_AUTHOR("Charles Eidsness <charles@cooper-street.com>"); MODULE_DESCRIPTION("Au1000 AC'97 ALSA Driver"); MODULE_LICENSE("GPL"); -#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,8) MODULE_SUPPORTED_DEVICE("{{AMD,Au1000 AC'97}}"); -#else -MODULE_CLASSES("{sound}"); -MODULE_DEVICES("{{AMD,Au1000 AC'97}}"); -#endif #define PLAYBACK 0 #define CAPTURE 1 @@ -68,8 +63,6 @@ MODULE_DEVICES("{{AMD,Au1000 AC'97}}"); #define READ_WAIT 2 #define RW_DONE 3 -DECLARE_WAIT_QUEUE_HEAD(ac97_command_wq); - typedef struct au1000_period au1000_period_t; struct au1000_period { @@ -94,7 +87,8 @@ struct audio_stream { int dma; spinlock_t dma_lock; au1000_period_t * buffer; - unsigned long period_size; + unsigned int period_size; + unsigned int periods; }; typedef struct snd_card_au1000 { @@ -109,11 +103,9 @@ typedef struct snd_card_au1000 { audio_stream_t *stream[2]; /* playback & capture */ } au1000_t; -static au1000_t *au1000 = NULL; - /*--------------------------- Local Functions --------------------------------*/ static void -au1000_set_ac97_xmit_slots(long xmit_slots) +au1000_set_ac97_xmit_slots(au1000_t *au1000, long xmit_slots) { u32 volatile ac97_config; @@ -126,7 +118,7 @@ au1000_set_ac97_xmit_slots(long xmit_slots) } static void -au1000_set_ac97_recv_slots(long recv_slots) +au1000_set_ac97_recv_slots(au1000_t *au1000, long recv_slots) { u32 volatile ac97_config; @@ -140,79 +132,92 @@ au1000_set_ac97_recv_slots(long recv_slots) static void -au1000_dma_stop(audio_stream_t *stream) +au1000_release_dma_link(audio_stream_t *stream) { - unsigned long flags; au1000_period_t * pointer; au1000_period_t * pointer_next; - if (stream->buffer != NULL) { - spin_lock_irqsave(&stream->dma_lock, flags); - disable_dma(stream->dma); - spin_unlock_irqrestore(&stream->dma_lock, flags); + stream->period_size = 0; + stream->periods = 0; + pointer = stream->buffer; + if (! pointer) + return; + do { + pointer_next = pointer->next; + kfree(pointer); + pointer = pointer_next; + } while (pointer != stream->buffer); + stream->buffer = NULL; +} + +static int +au1000_setup_dma_link(audio_stream_t *stream, unsigned int period_bytes, + unsigned int periods) +{ + snd_pcm_substream_t *substream = stream->substream; + snd_pcm_runtime_t *runtime = substream->runtime; + unsigned long dma_start; + int i; + + dma_start = virt_to_phys(runtime->dma_area); - pointer = stream->buffer; - pointer_next = stream->buffer->next; + if (stream->period_size == period_bytes && + stream->periods == periods) + return 0; /* not changed */ - do { - kfree(pointer); - pointer = pointer_next; - pointer_next = pointer->next; - } while (pointer != stream->buffer); + au1000_release_dma_link(stream); - stream->buffer = NULL; + stream->period_size = period_bytes; + stream->periods = periods; + + stream->buffer = kmalloc(sizeof(au1000_period_t), GFP_KERNEL); + if (! stream->buffer) + return -ENOMEM; + pointer = stream->buffer; + for (i = 0; i < periods; i++) { + pointer->start = (u32)(dma_start + (i * period_bytes)); + pointer->relative_end = (u32) (((i+1) * period_bytes) - 0x1); + if (i < periods - 1) { + pointer->next = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); + if (! pointer->next) { + au1000_release_dma_link(stream); + return -ENOMEM; + } + pointer = pointer->next; + } } + pointer->next = stream->buffer; + return 0; } static void -au1000_dma_start(audio_stream_t *stream) +au1000_dma_stop(audio_stream_t *stream) { - snd_pcm_substream_t *substream = stream->substream; - snd_pcm_runtime_t *runtime = substream->runtime; + snd_assert(stream->buffer, return); + disable_dma(stream->dma); +} - unsigned long flags, dma_start; - int i; - au1000_period_t * pointer; +static void +au1000_dma_start(audio_stream_t *stream) +{ + snd_assert(stream->buffer, return); - if (stream->buffer == NULL) { - dma_start = virt_to_phys(runtime->dma_area); - - stream->period_size = frames_to_bytes(runtime, - runtime->period_size); - stream->buffer = kmalloc(sizeof(au1000_period_t), GFP_KERNEL); - pointer = stream->buffer; - for (i = 0 ; i < runtime->periods ; i++) { - pointer->start = (u32)(dma_start + - (i * stream->period_size)); - pointer->relative_end = (u32) - (((i+1) * stream->period_size) - 0x1); - if ( i < runtime->periods - 1) { - pointer->next = kmalloc(sizeof(au1000_period_t) - , GFP_KERNEL); - pointer = pointer->next; - } - } - pointer->next = stream->buffer; - - spin_lock_irqsave(&stream->dma_lock, flags); - init_dma(stream->dma); - if (get_dma_active_buffer(stream->dma) == 0) { - clear_dma_done0(stream->dma); - set_dma_addr0(stream->dma, stream->buffer->start); - set_dma_count0(stream->dma, stream->period_size >> 1); - set_dma_addr1(stream->dma, stream->buffer->next->start); - set_dma_count1(stream->dma, stream->period_size >> 1); - } else { - clear_dma_done1(stream->dma); - set_dma_addr1(stream->dma, stream->buffer->start); - set_dma_count1(stream->dma, stream->period_size >> 1); - set_dma_addr0(stream->dma, stream->buffer->next->start); - set_dma_count0(stream->dma, stream->period_size >> 1); - } - enable_dma_buffers(stream->dma); - start_dma(stream->dma); - spin_unlock_irqrestore(&stream->dma_lock, flags); + init_dma(stream->dma); + if (get_dma_active_buffer(stream->dma) == 0) { + clear_dma_done0(stream->dma); + set_dma_addr0(stream->dma, stream->buffer->start); + set_dma_count0(stream->dma, stream->period_size >> 1); + set_dma_addr1(stream->dma, stream->buffer->next->start); + set_dma_count1(stream->dma, stream->period_size >> 1); + } else { + clear_dma_done1(stream->dma); + set_dma_addr1(stream->dma, stream->buffer->start); + set_dma_count1(stream->dma, stream->period_size >> 1); + set_dma_addr0(stream->dma, stream->buffer->next->start); + set_dma_count0(stream->dma, stream->period_size >> 1); } + enable_dma_buffers(stream->dma); + start_dma(stream->dma); } static irqreturn_t @@ -238,11 +243,9 @@ au1000_dma_interrupt(int irq, void *dev_id, struct pt_regs *regs) enable_dma_buffer1(stream->dma); break; case (DMA_D0 | DMA_D1): - spin_unlock(&stream->dma_lock); printk(KERN_ERR "DMA %d missed interrupt.\n",stream->dma); au1000_dma_stop(stream); au1000_dma_start(stream); - spin_lock(&stream->dma_lock); break; case (~DMA_D0 & ~DMA_D1): printk(KERN_ERR "DMA %d empty irq.\n",stream->dma); @@ -261,7 +264,7 @@ static snd_pcm_hw_constraint_list_t hw_constraints_rates = { .mask = 0, }; -static snd_pcm_hardware_t snd_au1000 = +static snd_pcm_hardware_t snd_au1000_hw = { .info = (SNDRV_PCM_INFO_INTERLEAVED | \ SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), @@ -283,10 +286,12 @@ static snd_pcm_hardware_t snd_au1000 = static int snd_au1000_playback_open(snd_pcm_substream_t * substream) { + au1000_t *au1000 = substream->pcm->private_data; + au1000->stream[PLAYBACK]->substream = substream; au1000->stream[PLAYBACK]->buffer = NULL; substream->private_data = au1000->stream[PLAYBACK]; - substream->runtime->hw = snd_au1000; + substream->runtime->hw = snd_au1000_hw; return (snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); } @@ -294,10 +299,12 @@ snd_au1000_playback_open(snd_pcm_substream_t * substream) static int snd_au1000_capture_open(snd_pcm_substream_t * substream) { + au1000_t *au1000 = substream->pcm->private_data; + au1000->stream[CAPTURE]->substream = substream; au1000->stream[CAPTURE]->buffer = NULL; substream->private_data = au1000->stream[CAPTURE]; - substream->runtime->hw = snd_au1000; + substream->runtime->hw = snd_au1000_hw; return (snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); @@ -306,6 +313,8 @@ snd_au1000_capture_open(snd_pcm_substream_t * substream) static int snd_au1000_playback_close(snd_pcm_substream_t * substream) { + au1000_t *au1000 = substream->pcm->private_data; + au1000->stream[PLAYBACK]->substream = NULL; return 0; } @@ -313,6 +322,8 @@ snd_au1000_playback_close(snd_pcm_substream_t * substream) static int snd_au1000_capture_close(snd_pcm_substream_t * substream) { + au1000_t *au1000 = substream->pcm->private_data; + au1000->stream[CAPTURE]->substream = NULL; return 0; } @@ -321,25 +332,36 @@ static int snd_au1000_hw_params(snd_pcm_substream_t * substream, snd_pcm_hw_params_t * hw_params) { - return snd_pcm_lib_malloc_pages(substream, - params_buffer_bytes(hw_params)); + audio_stream_t *stream = substream->private_data; + int err; + + err = snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); + if (err < 0) + return err; + return au1000_setup_dma_link(stream, + params_period_bytes(hw_params), + params_periods(hw_params)); } static int snd_au1000_hw_free(snd_pcm_substream_t * substream) { + audio_stream_t *stream = substream->private_data; + au1000_release_dma_link(stream); return snd_pcm_lib_free_pages(substream); } static int snd_au1000_playback_prepare(snd_pcm_substream_t * substream) { + au1000_t *au1000 = substream->pcm->private_data; snd_pcm_runtime_t *runtime = substream->runtime; - if (runtime->channels == 1 ) - au1000_set_ac97_xmit_slots(AC97_SLOT_4); + if (runtime->channels == 1) + au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_4); else - au1000_set_ac97_xmit_slots(AC97_SLOT_3 | AC97_SLOT_4); + au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); snd_ac97_set_rate(au1000->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate); return 0; } @@ -347,12 +369,13 @@ snd_au1000_playback_prepare(snd_pcm_substream_t * substream) static int snd_au1000_capture_prepare(snd_pcm_substream_t * substream) { + au1000_t *au1000 = substream->pcm->private_data; snd_pcm_runtime_t *runtime = substream->runtime; - if (runtime->channels == 1 ) - au1000_set_ac97_recv_slots(AC97_SLOT_4); + if (runtime->channels == 1) + au1000_set_ac97_recv_slots(au1000, AC97_SLOT_4); else - au1000_set_ac97_recv_slots(AC97_SLOT_3 | AC97_SLOT_4); + au1000_set_ac97_recv_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); snd_ac97_set_rate(au1000->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate); return 0; } @@ -363,6 +386,7 @@ snd_au1000_trigger(snd_pcm_substream_t * substream, int cmd) audio_stream_t *stream = substream->private_data; int err = 0; + spin_lock(&stream->dma_lock); switch (cmd) { case SNDRV_PCM_TRIGGER_START: au1000_dma_start(stream); @@ -374,6 +398,7 @@ snd_au1000_trigger(snd_pcm_substream_t * substream, int cmd) err = -EINVAL; break; } + spin_unlock(&stream->dma_lock); return err; } @@ -382,12 +407,11 @@ snd_au1000_pointer(snd_pcm_substream_t * substream) { audio_stream_t *stream = substream->private_data; snd_pcm_runtime_t *runtime = substream->runtime; - unsigned long flags; long location; - spin_lock_irqsave(&stream->dma_lock, flags); + spin_lock(&stream->dma_lock); location = get_dma_residue(stream->dma); - spin_unlock_irqrestore(&stream->dma_lock, flags); + spin_unlock(&stream->dma_lock); location = stream->buffer->relative_end - location; if (location == -1) location = 0; @@ -438,6 +462,9 @@ snd_au1000_pcm_new(void) pcm->info_flags = 0; strcpy(pcm->name, "Au1000 AC97 PCM"); + spin_lock_init(&au1000->stream[PLAYBACK]->dma_lock); + spin_lock_init(&au1000->stream[CAPTURE]->dma_lock); + flags = claim_dma_lock(); if ((au1000->stream[PLAYBACK]->dma = request_au1000_dma(DMA_ID_AC97C_TX, "AC97 TX", au1000_dma_interrupt, SA_INTERRUPT, @@ -457,8 +484,6 @@ snd_au1000_pcm_new(void) set_dma_mode(au1000->stream[CAPTURE]->dma, get_dma_mode(au1000->stream[CAPTURE]->dma) & ~DMA_NC); release_dma_lock(flags); - spin_lock_init(&au1000->stream[PLAYBACK]->dma_lock); - spin_lock_init(&au1000->stream[CAPTURE]->dma_lock); au1000->pcm = pcm; return 0; } @@ -469,9 +494,11 @@ snd_au1000_pcm_new(void) static unsigned short snd_au1000_ac97_read(ac97_t *ac97, unsigned short reg) { + au1000_t *au1000 = ac97->private_data; u32 volatile cmd; u16 volatile data; int i; + spin_lock(&au1000->ac97_lock); /* would rather use the interupt than this polling but it works and I can't get the interupt driven case to work efficiently */ @@ -505,8 +532,10 @@ get the interupt driven case to work efficiently */ static void snd_au1000_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val) { + au1000_t *au1000 = ac97->private_data; u32 cmd; int i; + spin_lock(&au1000->ac97_lock); /* would rather use the interupt than this polling but it works and I can't get the interupt driven case to work efficiently */ @@ -522,28 +551,13 @@ get the interupt driven case to work efficiently */ au1000->ac97_ioport->cmd = cmd; spin_unlock(&au1000->ac97_lock); } -static void -snd_au1000_ac97_free(ac97_t *ac97) -{ - au1000->ac97 = NULL; -} static int __devinit -snd_au1000_ac97_new(void) +snd_au1000_ac97_new(au1000_t *au1000) { int err; - -#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,8) - ac97_bus_t *pbus; - ac97_template_t ac97; - static ac97_bus_ops_t ops = { - .write = snd_au1000_ac97_write, - .read = snd_au1000_ac97_read, - }; -#else ac97_bus_t bus, *pbus; ac97_t ac97; -#endif if ((au1000->ac97_res_port = request_region(AC97C_CONFIG, sizeof(au1000_ac97_reg_t), "Au1x00 AC97")) == NULL) { @@ -554,8 +568,6 @@ snd_au1000_ac97_new(void) spin_lock_init(&au1000->ac97_lock); - spin_lock(&au1000->ac97_lock); - /* configure pins for AC'97 TODO: move to board_setup.c */ au_writel(au_readl(SYS_PINFUNC) & ~0x02, SYS_PINFUNC); @@ -572,26 +584,16 @@ snd_au1000_ac97_new(void) au1000->ac97_ioport->config = 0x0; mdelay(5); - spin_unlock(&au1000->ac97_lock); - /* Initialise AC97 middle-layer */ -#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,8) if ((err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus)) < 0) return err; -#else - memset(&bus, 0, sizeof(bus)); - bus.write = snd_au1000_ac97_write; - bus.read = snd_au1000_ac97_read; - if ((err = snd_ac97_bus(au1000->card, &bus, &pbus)) < 0) - return err; -#endif + memset(&ac97, 0, sizeof(ac97)); ac97.private_data = au1000; - ac97.private_free = snd_au1000_ac97_free; if ((err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97)) < 0) return err; - return 0; + return 0; } /*------------------------------ Setup / Destroy ----------------------------*/ @@ -599,6 +601,7 @@ snd_au1000_ac97_new(void) void snd_au1000_free(snd_card_t *card) { + au1000_t *au1000 = card->private_data; if (au1000->ac97_res_port) { /* put internal AC97 block into reset */ @@ -614,73 +617,70 @@ snd_au1000_free(snd_card_t *card) free_au1000_dma(au1000->stream[CAPTURE]->dma); kfree(au1000->stream[PLAYBACK]); - au1000->stream[PLAYBACK] = NULL; kfree(au1000->stream[CAPTURE]); - au1000->stream[CAPTURE] = NULL; - kfree(au1000); - au1000 = NULL; - } + +static snd_card_t *au1000_card; + static int __init au1000_init(void) { int err; + snd_card_t *card; + au1000_t *au1000; - au1000 = kmalloc(sizeof(au1000_t), GFP_KERNEL); - if (au1000 == NULL) - return -ENOMEM; - au1000->stream[PLAYBACK] = kmalloc(sizeof(audio_stream_t), GFP_KERNEL); - if (au1000->stream[PLAYBACK] == NULL) - return -ENOMEM; - au1000->stream[CAPTURE] = kmalloc(sizeof(audio_stream_t), GFP_KERNEL); - if (au1000->stream[CAPTURE] == NULL) + card = snd_card_new(-1, "AC97", THIS_MODULE, sizeof(au1000_t)); + if (card == NULL) return -ENOMEM; + + card->private_free = snd_au1000_free; + au1000 = card->private_data; /* so that snd_au1000_free will work as intended */ + au1000->card = card; au1000->stream[PLAYBACK]->dma = -1; au1000->stream[CAPTURE]->dma = -1; au1000->ac97_res_port = NULL; - - au1000->card = snd_card_new(-1, "AC97", THIS_MODULE, sizeof(au1000_t)); - if (au1000->card == NULL) { - snd_au1000_free(au1000->card); + au1000->stream[PLAYBACK] = kmalloc(sizeof(audio_stream_t), GFP_KERNEL); + au1000->stream[CAPTURE] = kmalloc(sizeof(audio_stream_t), GFP_KERNEL); + if (au1000->stream[PLAYBACK] == NULL || + au1000->stream[CAPTURE] == NULL) { + snd_card_free(card); return -ENOMEM; } - au1000->card->private_data = (au1000_t *)au1000; - au1000->card->private_free = snd_au1000_free; - - if ((err = snd_au1000_ac97_new()) < 0 ) { - snd_card_free(au1000->card); + if ((err = snd_au1000_ac97_new(au1000)) < 0 ) { + snd_card_free(card); return err; } - if ((err = snd_au1000_pcm_new()) < 0) { - snd_card_free(au1000->card); + if ((err = snd_au1000_pcm_new(au1000)) < 0) { + snd_card_free(card); return err; } - strcpy(au1000->card->driver, "AMD-Au1000-AC97"); - strcpy(au1000->card->shortname, "Au1000-AC97"); - sprintf(au1000->card->longname, "AMD Au1000--AC97 ALSA Driver"); + strcpy(card->driver, "Au1000-AC97"); + strcpy(card->shortname, "AMD Au1000-AC97"); + sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver"); - if ((err = snd_card_set_generic_dev(au1000->card)) < 0) { - snd_card_free(au1000->card); + if ((err = snd_card_set_generic_dev(card)) < 0) { + snd_card_free(card); return err; } - if ((err = snd_card_register(au1000->card)) < 0) { - snd_card_free(au1000->card); + if ((err = snd_card_register(card)) < 0) { + snd_card_free(card); return err; } printk( KERN_INFO "ALSA AC97: Driver Initialized\n" ); + au1000_card = card; return 0; } static void __exit au1000_exit(void) { - snd_card_free(au1000->card); + snd_card_free(au1000_card); } module_init(au1000_init); |