[PATCH RESEND 5/5] ASoC: tegra: remove support of legacy DMA driver based access
Stephen Warren
swarren at wwwdotorg.org
Fri Sep 14 12:11:29 EDT 2012
From: Laxman Dewangan <ldewangan at nvidia.com>
Remove the support code which uses the legacy APB DMA driver
for accessing the I2S FIFO.
The driver will use the dmaengine based APB DMA driver for
accessing reqding/writing to I2S FIFO.
Signed-off-by: Laxman Dewangan <ldewangan at nvidia.com>
Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
sound/soc/tegra/Kconfig | 2 +-
sound/soc/tegra/tegra_pcm.c | 232 -------------------------------------------
sound/soc/tegra/tegra_pcm.h | 14 ---
3 files changed, 1 insertions(+), 247 deletions(-)
diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index 02bcd30..19e5fe7 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -1,6 +1,6 @@
config SND_SOC_TEGRA
tristate "SoC Audio for the Tegra System-on-Chip"
- depends on ARCH_TEGRA && (TEGRA_SYSTEM_DMA || TEGRA20_APB_DMA)
+ depends on ARCH_TEGRA && TEGRA20_APB_DMA
select REGMAP_MMIO
select SND_SOC_DMAENGINE_PCM if TEGRA20_APB_DMA
help
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index 8d6900c..e187339 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -57,237 +57,6 @@ static const struct snd_pcm_hardware tegra_pcm_hardware = {
.fifo_size = 4,
};
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
-static void tegra_pcm_queue_dma(struct tegra_runtime_data *prtd)
-{
- struct snd_pcm_substream *substream = prtd->substream;
- struct snd_dma_buffer *buf = &substream->dma_buffer;
- struct tegra_dma_req *dma_req;
- unsigned long addr;
-
- dma_req = &prtd->dma_req[prtd->dma_req_idx];
- prtd->dma_req_idx = 1 - prtd->dma_req_idx;
-
- addr = buf->addr + prtd->dma_pos;
- prtd->dma_pos += dma_req->size;
- if (prtd->dma_pos >= prtd->dma_pos_end)
- prtd->dma_pos = 0;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- dma_req->source_addr = addr;
- else
- dma_req->dest_addr = addr;
-
- tegra_dma_enqueue_req(prtd->dma_chan, dma_req);
-}
-
-static void dma_complete_callback(struct tegra_dma_req *req)
-{
- struct tegra_runtime_data *prtd = (struct tegra_runtime_data *)req->dev;
- struct snd_pcm_substream *substream = prtd->substream;
- struct snd_pcm_runtime *runtime = substream->runtime;
-
- spin_lock(&prtd->lock);
-
- if (!prtd->running) {
- spin_unlock(&prtd->lock);
- return;
- }
-
- if (++prtd->period_index >= runtime->periods)
- prtd->period_index = 0;
-
- tegra_pcm_queue_dma(prtd);
-
- spin_unlock(&prtd->lock);
-
- snd_pcm_period_elapsed(substream);
-}
-
-static void setup_dma_tx_request(struct tegra_dma_req *req,
- struct tegra_pcm_dma_params * dmap)
-{
- req->complete = dma_complete_callback;
- req->to_memory = false;
- req->dest_addr = dmap->addr;
- req->dest_wrap = dmap->wrap;
- req->source_bus_width = 32;
- req->source_wrap = 0;
- req->dest_bus_width = dmap->width;
- req->req_sel = dmap->req_sel;
-}
-
-static void setup_dma_rx_request(struct tegra_dma_req *req,
- struct tegra_pcm_dma_params * dmap)
-{
- req->complete = dma_complete_callback;
- req->to_memory = true;
- req->source_addr = dmap->addr;
- req->dest_wrap = 0;
- req->source_bus_width = dmap->width;
- req->source_wrap = dmap->wrap;
- req->dest_bus_width = 32;
- req->req_sel = dmap->req_sel;
-}
-
-static int tegra_pcm_open(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct tegra_runtime_data *prtd;
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct tegra_pcm_dma_params * dmap;
- int ret = 0;
-
- prtd = kzalloc(sizeof(struct tegra_runtime_data), GFP_KERNEL);
- if (prtd == NULL)
- return -ENOMEM;
-
- runtime->private_data = prtd;
- prtd->substream = substream;
-
- spin_lock_init(&prtd->lock);
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
- setup_dma_tx_request(&prtd->dma_req[0], dmap);
- setup_dma_tx_request(&prtd->dma_req[1], dmap);
- } else {
- dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
- setup_dma_rx_request(&prtd->dma_req[0], dmap);
- setup_dma_rx_request(&prtd->dma_req[1], dmap);
- }
-
- prtd->dma_req[0].dev = prtd;
- prtd->dma_req[1].dev = prtd;
-
- prtd->dma_chan = tegra_dma_allocate_channel(TEGRA_DMA_MODE_ONESHOT);
- if (prtd->dma_chan == NULL) {
- ret = -ENOMEM;
- goto err;
- }
-
- /* Set HW params now that initialization is complete */
- snd_soc_set_runtime_hwparams(substream, &tegra_pcm_hardware);
-
- /* Ensure that buffer size is a multiple of period size */
- ret = snd_pcm_hw_constraint_integer(runtime,
- SNDRV_PCM_HW_PARAM_PERIODS);
- if (ret < 0)
- goto err;
-
- return 0;
-
-err:
- if (prtd->dma_chan) {
- tegra_dma_free_channel(prtd->dma_chan);
- }
-
- kfree(prtd);
-
- return ret;
-}
-
-static int tegra_pcm_close(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct tegra_runtime_data *prtd = runtime->private_data;
-
- tegra_dma_free_channel(prtd->dma_chan);
-
- kfree(prtd);
-
- return 0;
-}
-
-static int tegra_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct tegra_runtime_data *prtd = runtime->private_data;
-
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
-
- prtd->dma_req[0].size = params_period_bytes(params);
- prtd->dma_req[1].size = prtd->dma_req[0].size;
-
- return 0;
-}
-
-static int tegra_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- snd_pcm_set_runtime_buffer(substream, NULL);
-
- return 0;
-}
-
-static int tegra_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct tegra_runtime_data *prtd = runtime->private_data;
- unsigned long flags;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- prtd->dma_pos = 0;
- prtd->dma_pos_end = frames_to_bytes(runtime, runtime->periods * runtime->period_size);
- prtd->period_index = 0;
- prtd->dma_req_idx = 0;
- /* Fall-through */
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- spin_lock_irqsave(&prtd->lock, flags);
- prtd->running = 1;
- spin_unlock_irqrestore(&prtd->lock, flags);
- tegra_pcm_queue_dma(prtd);
- tegra_pcm_queue_dma(prtd);
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- spin_lock_irqsave(&prtd->lock, flags);
- prtd->running = 0;
- spin_unlock_irqrestore(&prtd->lock, flags);
- tegra_dma_dequeue_req(prtd->dma_chan, &prtd->dma_req[0]);
- tegra_dma_dequeue_req(prtd->dma_chan, &prtd->dma_req[1]);
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static snd_pcm_uframes_t tegra_pcm_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct tegra_runtime_data *prtd = runtime->private_data;
-
- return prtd->period_index * runtime->period_size;
-}
-
-
-static int tegra_pcm_mmap(struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
-
- return dma_mmap_writecombine(substream->pcm->card->dev, vma,
- runtime->dma_area,
- runtime->dma_addr,
- runtime->dma_bytes);
-}
-
-static struct snd_pcm_ops tegra_pcm_ops = {
- .open = tegra_pcm_open,
- .close = tegra_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = tegra_pcm_hw_params,
- .hw_free = tegra_pcm_hw_free,
- .trigger = tegra_pcm_trigger,
- .pointer = tegra_pcm_pointer,
- .mmap = tegra_pcm_mmap,
-};
-#else
static int tegra_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -399,7 +168,6 @@ static struct snd_pcm_ops tegra_pcm_ops = {
.pointer = snd_dmaengine_pcm_pointer,
.mmap = tegra_pcm_mmap,
};
-#endif
static int tegra_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
{
diff --git a/sound/soc/tegra/tegra_pcm.h b/sound/soc/tegra/tegra_pcm.h
index a3a4503..b40279b 100644
--- a/sound/soc/tegra/tegra_pcm.h
+++ b/sound/soc/tegra/tegra_pcm.h
@@ -40,20 +40,6 @@ struct tegra_pcm_dma_params {
unsigned long req_sel;
};
-#if defined(CONFIG_TEGRA_SYSTEM_DMA)
-struct tegra_runtime_data {
- struct snd_pcm_substream *substream;
- spinlock_t lock;
- int running;
- int dma_pos;
- int dma_pos_end;
- int period_index;
- int dma_req_idx;
- struct tegra_dma_req dma_req[2];
- struct tegra_dma_channel *dma_chan;
-};
-#endif
-
int tegra_pcm_platform_register(struct device *dev);
void tegra_pcm_platform_unregister(struct device *dev);
--
1.7.0.4
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