diff options
Diffstat (limited to 'sound/soc/blackfin/bf5xx-i2s-pcm.c')
| -rw-r--r-- | sound/soc/blackfin/bf5xx-i2s-pcm.c | 183 |
1 files changed, 118 insertions, 65 deletions
diff --git a/sound/soc/blackfin/bf5xx-i2s-pcm.c b/sound/soc/blackfin/bf5xx-i2s-pcm.c index 262c1de364d8..9cb4a80df98e 100644 --- a/sound/soc/blackfin/bf5xx-i2s-pcm.c +++ b/sound/soc/blackfin/bf5xx-i2s-pcm.c @@ -39,8 +39,8 @@ #include <asm/dma.h> -#include "bf5xx-i2s-pcm.h" #include "bf5xx-sport.h" +#include "bf5xx-i2s-pcm.h" static void bf5xx_dma_irq(void *data) { @@ -50,7 +50,6 @@ static void bf5xx_dma_irq(void *data) static const struct snd_pcm_hardware bf5xx_pcm_hardware = { .info = SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER, .formats = SNDRV_PCM_FMTBIT_S16_LE | @@ -67,10 +66,16 @@ static const struct snd_pcm_hardware bf5xx_pcm_hardware = { static int bf5xx_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { - size_t size = bf5xx_pcm_hardware.buffer_bytes_max; - snd_pcm_lib_malloc_pages(substream, size); + struct snd_soc_pcm_runtime *rtd = substream->private_data; + unsigned int buffer_size = params_buffer_bytes(params); + struct bf5xx_i2s_pcm_data *dma_data; - return 0; + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + + if (dma_data->tdm_mode) + buffer_size = buffer_size / params_channels(params) * 8; + + return snd_pcm_lib_malloc_pages(substream, buffer_size); } static int bf5xx_pcm_hw_free(struct snd_pcm_substream *substream) @@ -82,9 +87,16 @@ static int bf5xx_pcm_hw_free(struct snd_pcm_substream *substream) static int bf5xx_pcm_prepare(struct snd_pcm_substream *substream) { + struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; struct sport_device *sport = runtime->private_data; int period_bytes = frames_to_bytes(runtime, runtime->period_size); + struct bf5xx_i2s_pcm_data *dma_data; + + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + + if (dma_data->tdm_mode) + period_bytes = period_bytes / runtime->channels * 8; pr_debug("%s enter\n", __func__); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { @@ -131,10 +143,15 @@ static int bf5xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream) { + struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; struct sport_device *sport = runtime->private_data; unsigned int diff; snd_pcm_uframes_t frames; + struct bf5xx_i2s_pcm_data *dma_data; + + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + pr_debug("%s enter\n", __func__); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { diff = sport_curr_offset_tx(sport); @@ -151,6 +168,8 @@ static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream) diff = 0; frames = bytes_to_frames(substream->runtime, diff); + if (dma_data->tdm_mode) + frames = frames * runtime->channels / 8; return frames; } @@ -162,11 +181,18 @@ static int bf5xx_pcm_open(struct snd_pcm_substream *substream) struct sport_device *sport_handle = snd_soc_dai_get_drvdata(cpu_dai); struct snd_pcm_runtime *runtime = substream->runtime; struct snd_dma_buffer *buf = &substream->dma_buffer; + struct bf5xx_i2s_pcm_data *dma_data; int ret; + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + pr_debug("%s enter\n", __func__); snd_soc_set_runtime_hwparams(substream, &bf5xx_pcm_hardware); + if (dma_data->tdm_mode) + runtime->hw.buffer_bytes_max /= 4; + else + runtime->hw.info |= SNDRV_PCM_INFO_MMAP; ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); @@ -202,6 +228,88 @@ static int bf5xx_pcm_mmap(struct snd_pcm_substream *substream, return 0 ; } +static int bf5xx_pcm_copy(struct snd_pcm_substream *substream, int channel, + snd_pcm_uframes_t pos, void *buf, snd_pcm_uframes_t count) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int sample_size = runtime->sample_bits / 8; + struct bf5xx_i2s_pcm_data *dma_data; + unsigned int i; + void *src, *dst; + + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + + if (dma_data->tdm_mode) { + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + src = buf; + dst = runtime->dma_area; + dst += pos * sample_size * 8; + + while (count--) { + for (i = 0; i < runtime->channels; i++) { + memcpy(dst + dma_data->map[i] * + sample_size, src, sample_size); + src += sample_size; + } + dst += 8 * sample_size; + } + } else { + src = runtime->dma_area; + src += pos * sample_size * 8; + dst = buf; + + while (count--) { + for (i = 0; i < runtime->channels; i++) { + memcpy(dst, src + dma_data->map[i] * + sample_size, sample_size); + dst += sample_size; + } + src += 8 * sample_size; + } + } + } else { + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + src = buf; + dst = runtime->dma_area; + dst += frames_to_bytes(runtime, pos); + } else { + src = runtime->dma_area; + src += frames_to_bytes(runtime, pos); + dst = buf; + } + + memcpy(dst, src, frames_to_bytes(runtime, count)); + } + + return 0; +} + +static int bf5xx_pcm_silence(struct snd_pcm_substream *substream, + int channel, snd_pcm_uframes_t pos, snd_pcm_uframes_t count) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int sample_size = runtime->sample_bits / 8; + void *buf = runtime->dma_area; + struct bf5xx_i2s_pcm_data *dma_data; + unsigned int offset, size; + + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + + if (dma_data->tdm_mode) { + offset = pos * 8 * sample_size; + size = count * 8 * sample_size; + } else { + offset = frames_to_bytes(runtime, pos); + size = frames_to_bytes(runtime, count); + } + + snd_pcm_format_set_silence(runtime->format, buf + offset, size); + + return 0; +} + static struct snd_pcm_ops bf5xx_pcm_i2s_ops = { .open = bf5xx_pcm_open, .ioctl = snd_pcm_lib_ioctl, @@ -211,57 +319,16 @@ static struct snd_pcm_ops bf5xx_pcm_i2s_ops = { .trigger = bf5xx_pcm_trigger, .pointer = bf5xx_pcm_pointer, .mmap = bf5xx_pcm_mmap, + .copy = bf5xx_pcm_copy, + .silence = bf5xx_pcm_silence, }; -static int bf5xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream) -{ - struct snd_pcm_substream *substream = pcm->streams[stream].substream; - struct snd_dma_buffer *buf = &substream->dma_buffer; - size_t size = bf5xx_pcm_hardware.buffer_bytes_max; - - buf->dev.type = SNDRV_DMA_TYPE_DEV; - buf->dev.dev = pcm->card->dev; - buf->private_data = NULL; - buf->area = dma_alloc_coherent(pcm->card->dev, size, - &buf->addr, GFP_KERNEL); - if (!buf->area) { - pr_err("Failed to allocate dma memory - Please increase uncached DMA memory region\n"); - return -ENOMEM; - } - buf->bytes = size; - - pr_debug("%s, area:%p, size:0x%08lx\n", __func__, - buf->area, buf->bytes); - - return 0; -} - -static void bf5xx_pcm_free_dma_buffers(struct snd_pcm *pcm) -{ - struct snd_pcm_substream *substream; - struct snd_dma_buffer *buf; - int stream; - - for (stream = 0; stream < 2; stream++) { - substream = pcm->streams[stream].substream; - if (!substream) - continue; - - buf = &substream->dma_buffer; - if (!buf->area) - continue; - dma_free_coherent(NULL, buf->bytes, buf->area, 0); - buf->area = NULL; - } -} - static u64 bf5xx_pcm_dmamask = DMA_BIT_MASK(32); static int bf5xx_pcm_i2s_new(struct snd_soc_pcm_runtime *rtd) { struct snd_card *card = rtd->card->snd_card; - struct snd_pcm *pcm = rtd->pcm; - int ret = 0; + size_t size = bf5xx_pcm_hardware.buffer_bytes_max; pr_debug("%s enter\n", __func__); if (!card->dev->dma_mask) @@ -269,27 +336,13 @@ static int bf5xx_pcm_i2s_new(struct snd_soc_pcm_runtime *rtd) if (!card->dev->coherent_dma_mask) card->dev->coherent_dma_mask = DMA_BIT_MASK(32); - if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { - ret = bf5xx_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_PLAYBACK); - if (ret) - goto out; - } - - if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - ret = bf5xx_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_CAPTURE); - if (ret) - goto out; - } - out: - return ret; + return snd_pcm_lib_preallocate_pages_for_all(rtd->pcm, + SNDRV_DMA_TYPE_DEV, card->dev, size, size); } static struct snd_soc_platform_driver bf5xx_i2s_soc_platform = { .ops = &bf5xx_pcm_i2s_ops, .pcm_new = bf5xx_pcm_i2s_new, - .pcm_free = bf5xx_pcm_free_dma_buffers, }; static int bfin_i2s_soc_platform_probe(struct platform_device *pdev) |