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Merge remote-tracking branch 'asoc/topic/fsi' into tmp

This commit is contained in:
Mark Brown 2013-08-30 11:04:22 +01:00
parent 429aff7082 53110a256a
commit 812e6bbf2c
1 changed files with 35 additions and 20 deletions
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55
sound/soc/sh/fsi.c
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@ -235,6 +235,8 @@ struct fsi_stream {
struct sh_dmae_slave slave; /* see fsi_handler_init() */
struct work_struct work;
dma_addr_t dma;
int loop_cnt;
int additional_pos;
};
struct fsi_clk {
@ -1289,6 +1291,8 @@ static int fsi_dma_init(struct fsi_priv *fsi, struct fsi_stream *io)
io->bus_option = BUSOP_SET(24, PACKAGE_24BITBUS_BACK) |
BUSOP_SET(16, PACKAGE_16BITBUS_STREAM);
io->loop_cnt = 2; /* push 1st, 2nd period first, then 3rd, 4th... */
io->additional_pos = 0;
io->dma = dma_map_single(dai->dev, runtime->dma_area,
snd_pcm_lib_buffer_bytes(io->substream), dir);
return 0;
@ -1305,11 +1309,15 @@ static int fsi_dma_quit(struct fsi_priv *fsi, struct fsi_stream *io)
return 0;
}
static dma_addr_t fsi_dma_get_area(struct fsi_stream *io)
static dma_addr_t fsi_dma_get_area(struct fsi_stream *io, int additional)
{
struct snd_pcm_runtime *runtime = io->substream->runtime;
int period = io->period_pos + additional;
return io->dma + samples_to_bytes(runtime, io->buff_sample_pos);
if (period >= runtime->periods)
period = 0;
return io->dma + samples_to_bytes(runtime, period * io->period_samples);
}
static void fsi_dma_complete(void *data)
@ -1321,7 +1329,7 @@ static void fsi_dma_complete(void *data)
enum dma_data_direction dir = fsi_stream_is_play(fsi, io) ?
DMA_TO_DEVICE : DMA_FROM_DEVICE;
dma_sync_single_for_cpu(dai->dev, fsi_dma_get_area(io),
dma_sync_single_for_cpu(dai->dev, fsi_dma_get_area(io, 0),
samples_to_bytes(runtime, io->period_samples), dir);
io->buff_sample_pos += io->period_samples;
@ -1347,7 +1355,7 @@ static void fsi_dma_do_work(struct work_struct *work)
struct snd_pcm_runtime *runtime;
enum dma_data_direction dir;
int is_play = fsi_stream_is_play(fsi, io);
int len;
int len, i;
dma_addr_t buf;
if (!fsi_stream_is_working(fsi, io))
@ -1357,26 +1365,33 @@ static void fsi_dma_do_work(struct work_struct *work)
runtime = io->substream->runtime;
dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
len = samples_to_bytes(runtime, io->period_samples);
buf = fsi_dma_get_area(io);
dma_sync_single_for_device(dai->dev, buf, len, dir);
for (i = 0; i < io->loop_cnt; i++) {
buf = fsi_dma_get_area(io, io->additional_pos);
desc = dmaengine_prep_slave_single(io->chan, buf, len, dir,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
dev_err(dai->dev, "dmaengine_prep_slave_sg() fail\n");
return;
dma_sync_single_for_device(dai->dev, buf, len, dir);
desc = dmaengine_prep_slave_single(io->chan, buf, len, dir,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
dev_err(dai->dev, "dmaengine_prep_slave_sg() fail\n");
return;
}
desc->callback = fsi_dma_complete;
desc->callback_param = io;
if (dmaengine_submit(desc) < 0) {
dev_err(dai->dev, "tx_submit() fail\n");
return;
}
dma_async_issue_pending(io->chan);
io->additional_pos = 1;
}
desc->callback = fsi_dma_complete;
desc->callback_param = io;
if (dmaengine_submit(desc) < 0) {
dev_err(dai->dev, "tx_submit() fail\n");
return;
}
dma_async_issue_pending(io->chan);
io->loop_cnt = 1;
/*
* FIXME