From: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
Signed-off-by: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
---
sound/soc/omap/omap-mcbsp.c | 8 ++++++--
sound/soc/omap/omap-pcm.c | 13 +++++++++++--
sound/soc/omap/omap-pcm.h | 1 +
3 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 8d8500f..42a1956 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -166,6 +166,7 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream,
err = omap_mcbsp_request(bus_id);
if (cpu_is_omap343x()) {
+ int dma_op_mode = omap_mcbsp_get_dma_op_mode(bus_id);
int max_period;
/*
@@ -187,7 +188,8 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream,
max_period++;
max_period <<= 1;
- snd_pcm_hw_constraint_minmax(substream->runtime,
+ if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD)
+ snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
32, max_period);
}
@@ -246,7 +248,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs;
int dma, bus_id = mcbsp_data->bus_id, id = cpu_dai->id;
- int wlen, channels, wpf;
+ int wlen, channels, wpf, dma_mode = MCBSP_DMA_MODE_ELEMENT;
unsigned long port;
unsigned int format;
@@ -262,6 +264,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
} else if (cpu_is_omap343x()) {
dma = omap24xx_dma_reqs[bus_id][substream->stream];
port = omap34xx_mcbsp_port[bus_id][substream->stream];
+ dma_mode = omap_mcbsp_get_dma_op_mode(bus_id);
omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold =
omap_mcbsp_set_threshold;
} else {
@@ -271,6 +274,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
substream->stream ? "Audio Capture" : "Audio Playback";
omap_mcbsp_dai_dma_params[id][substream->stream].dma_req = dma;
omap_mcbsp_dai_dma_params[id][substream->stream].port_addr = port;
+ omap_mcbsp_dai_dma_params[id][substream->stream].dma_op_mode = dma_mode;
cpu_dai->dma_data = &omap_mcbsp_dai_dma_params[id][substream->stream];
if (mcbsp_data->configured) {
diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index 0c1ba0f..d8f52e8 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -144,7 +144,9 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
memset(&dma_params, 0, sizeof(dma_params));
- if (cpu_is_omap34xx())
+ /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */
+ if (cpu_is_omap34xx() &&
+ (dma_data->dma_op_mode == MCBSP_DMA_MODE_THRESHOLD))
sync_mode = OMAP_DMA_SYNC_FRAME;
else
sync_mode = OMAP_DMA_SYNC_ELEMENT;
@@ -193,9 +195,16 @@ static int omap_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
struct omap_pcm_dma_data *dma_data = prtd->dma_data;
unsigned long flags;
int ret = 0;
- int samples = snd_pcm_lib_period_bytes(substream) >> 1;
+ int samples;
spin_lock_irqsave(&prtd->lock, flags);
+
+ /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */
+ if (dma_data->dma_op_mode == MCBSP_DMA_MODE_THRESHOLD)
+ samples = snd_pcm_lib_period_bytes(substream) >> 1;
+ else
+ samples = 1;
+
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
diff --git a/sound/soc/omap/omap-pcm.h b/sound/soc/omap/omap-pcm.h
index 6fda34d..4b77487 100644
--- a/sound/soc/omap/omap-pcm.h
+++ b/sound/soc/omap/omap-pcm.h
@@ -29,6 +29,7 @@ struct omap_pcm_dma_data {
char *name; /* stream identifier */
int dma_req; /* DMA request line */
unsigned long port_addr; /* transmit/receive register */
+ int dma_op_mode; /* DMA operation mode: element, frame */
void (*set_threshold)(struct snd_pcm_substream *substream, int thres);
};
--
1.6.2.GIT
--
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