diff options
| -rw-r--r-- | sound/soc/blackfin/bf5xx-i2s-pcm.c | 118 | ||||
| -rw-r--r-- | sound/soc/blackfin/bf5xx-i2s-pcm.h | 17 | ||||
| -rw-r--r-- | sound/soc/blackfin/bf5xx-i2s.c | 105 |
3 files changed, 229 insertions, 11 deletions
diff --git a/sound/soc/blackfin/bf5xx-i2s-pcm.c b/sound/soc/blackfin/bf5xx-i2s-pcm.c index 9931a18c962e..9cb4a80df98e 100644 --- a/sound/soc/blackfin/bf5xx-i2s-pcm.c +++ b/sound/soc/blackfin/bf5xx-i2s-pcm.c @@ -40,6 +40,7 @@ #include <asm/dma.h> #include "bf5xx-sport.h" +#include "bf5xx-i2s-pcm.h" static void bf5xx_dma_irq(void *data) { @@ -49,7 +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 | @@ -66,7 +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) { - return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); + struct snd_soc_pcm_runtime *rtd = substream->private_data; + unsigned int buffer_size = params_buffer_bytes(params); + struct bf5xx_i2s_pcm_data *dma_data; + + 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) @@ -78,9 +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) { @@ -127,10 +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); @@ -147,6 +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; } @@ -158,11 +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); @@ -198,6 +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, @@ -207,6 +319,8 @@ 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 u64 bf5xx_pcm_dmamask = DMA_BIT_MASK(32); diff --git a/sound/soc/blackfin/bf5xx-i2s-pcm.h b/sound/soc/blackfin/bf5xx-i2s-pcm.h new file mode 100644 index 000000000000..1f0435249f88 --- /dev/null +++ b/sound/soc/blackfin/bf5xx-i2s-pcm.h @@ -0,0 +1,17 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _BF5XX_TDM_PCM_H +#define _BF5XX_TDM_PCM_H + +#define BFIN_TDM_DAI_MAX_SLOTS 8 + +struct bf5xx_i2s_pcm_data { + unsigned int map[BFIN_TDM_DAI_MAX_SLOTS]; + bool tdm_mode; +}; + +#endif diff --git a/sound/soc/blackfin/bf5xx-i2s.c b/sound/soc/blackfin/bf5xx-i2s.c index 78411f266f60..9a174fc47d39 100644 --- a/sound/soc/blackfin/bf5xx-i2s.c +++ b/sound/soc/blackfin/bf5xx-i2s.c @@ -42,6 +42,7 @@ #include <linux/gpio.h> #include "bf5xx-sport.h" +#include "bf5xx-i2s-pcm.h" struct bf5xx_i2s_port { u16 tcr1; @@ -49,6 +50,13 @@ struct bf5xx_i2s_port { u16 tcr2; u16 rcr2; int configured; + + unsigned int slots; + unsigned int tx_mask; + unsigned int rx_mask; + + struct bf5xx_i2s_pcm_data tx_dma_data; + struct bf5xx_i2s_pcm_data rx_dma_data; }; static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, @@ -170,6 +178,64 @@ static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream, bf5xx_i2s->configured = 0; } +static int bf5xx_i2s_set_channel_map(struct snd_soc_dai *dai, + unsigned int tx_num, unsigned int *tx_slot, + unsigned int rx_num, unsigned int *rx_slot) +{ + struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai); + struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data; + unsigned int tx_mapped = 0, rx_mapped = 0; + unsigned int slot; + int i; + + if ((tx_num > BFIN_TDM_DAI_MAX_SLOTS) || + (rx_num > BFIN_TDM_DAI_MAX_SLOTS)) + return -EINVAL; + + for (i = 0; i < tx_num; i++) { + slot = tx_slot[i]; + if ((slot < BFIN_TDM_DAI_MAX_SLOTS) && + (!(tx_mapped & (1 << slot)))) { + bf5xx_i2s->tx_dma_data.map[i] = slot; + tx_mapped |= 1 << slot; + } else + return -EINVAL; + } + for (i = 0; i < rx_num; i++) { + slot = rx_slot[i]; + if ((slot < BFIN_TDM_DAI_MAX_SLOTS) && + (!(rx_mapped & (1 << slot)))) { + bf5xx_i2s->rx_dma_data.map[i] = slot; + rx_mapped |= 1 << slot; + } else + return -EINVAL; + } + + return 0; +} + +static int bf5xx_i2s_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, + unsigned int rx_mask, int slots, int width) +{ + struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai); + struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data; + + if (slots % 8 != 0 || slots > 8) + return -EINVAL; + + if (width != 32) + return -EINVAL; + + bf5xx_i2s->slots = slots; + bf5xx_i2s->tx_mask = tx_mask; + bf5xx_i2s->rx_mask = rx_mask; + + bf5xx_i2s->tx_dma_data.tdm_mode = slots != 0; + bf5xx_i2s->rx_dma_data.tdm_mode = slots != 0; + + return sport_set_multichannel(sport_handle, slots, tx_mask, rx_mask, 0); +} + #ifdef CONFIG_PM static int bf5xx_i2s_suspend(struct snd_soc_dai *dai) { @@ -206,7 +272,8 @@ static int bf5xx_i2s_resume(struct snd_soc_dai *dai) return -EBUSY; } - return 0; + return sport_set_multichannel(sport_handle, bf5xx_i2s->slots, + bf5xx_i2s->tx_mask, bf5xx_i2s->rx_mask, 0); } #else @@ -214,6 +281,23 @@ static int bf5xx_i2s_resume(struct snd_soc_dai *dai) #define bf5xx_i2s_resume NULL #endif +static int bf5xx_i2s_dai_probe(struct snd_soc_dai *dai) +{ + struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai); + struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data; + unsigned int i; + + for (i = 0; i < BFIN_TDM_DAI_MAX_SLOTS; i++) { + bf5xx_i2s->tx_dma_data.map[i] = i; + bf5xx_i2s->rx_dma_data.map[i] = i; + } + + dai->playback_dma_data = &bf5xx_i2s->tx_dma_data; + dai->capture_dma_data = &bf5xx_i2s->rx_dma_data; + + return 0; +} + #define BF5XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \ @@ -226,22 +310,25 @@ static int bf5xx_i2s_resume(struct snd_soc_dai *dai) SNDRV_PCM_FMTBIT_S32_LE) static const struct snd_soc_dai_ops bf5xx_i2s_dai_ops = { - .shutdown = bf5xx_i2s_shutdown, - .hw_params = bf5xx_i2s_hw_params, - .set_fmt = bf5xx_i2s_set_dai_fmt, + .shutdown = bf5xx_i2s_shutdown, + .hw_params = bf5xx_i2s_hw_params, + .set_fmt = bf5xx_i2s_set_dai_fmt, + .set_tdm_slot = bf5xx_i2s_set_tdm_slot, + .set_channel_map = bf5xx_i2s_set_channel_map, }; static struct snd_soc_dai_driver bf5xx_i2s_dai = { + .probe = bf5xx_i2s_dai_probe, .suspend = bf5xx_i2s_suspend, .resume = bf5xx_i2s_resume, .playback = { - .channels_min = 1, - .channels_max = 2, + .channels_min = 2, + .channels_max = 8, .rates = BF5XX_I2S_RATES, .formats = BF5XX_I2S_FORMATS,}, .capture = { - .channels_min = 1, - .channels_max = 2, + .channels_min = 2, + .channels_max = 8, .rates = BF5XX_I2S_RATES, .formats = BF5XX_I2S_FORMATS,}, .ops = &bf5xx_i2s_dai_ops, @@ -257,7 +344,7 @@ static int bf5xx_i2s_probe(struct platform_device *pdev) int ret; /* configure SPORT for I2S */ - sport_handle = sport_init(pdev, 4, 2 * sizeof(u32), + sport_handle = sport_init(pdev, 4, 8 * sizeof(u32), sizeof(struct bf5xx_i2s_port)); if (!sport_handle) return -ENODEV; |
