redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

Merge remote-tracking branch 'asoc/topic/mxs' into asoc-next

hifive-unleashed-5.1
Mark Brown 2013-10-24 11:24:09 +01:00
parent 07797e9bb6 863ebddec8
commit 10abe843d5
4 changed files with 40 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/sound/soc-dai.h
View File

@ -169,6 +169,13 @@ struct snd_soc_dai_ops {
struct snd_soc_dai *);
int (*prepare)(struct snd_pcm_substream *,
struct snd_soc_dai *);
/*
* NOTE: Commands passed to the trigger function are not necessarily
* compatible with the current state of the dai. For example this
* sequence of commands is possible: START STOP STOP.
* So do not unconditionally use refcounting functions in the trigger
* function, e.g. clk_enable/disable.
*/
int (*trigger)(struct snd_pcm_substream *, int,
struct snd_soc_dai *);
int (*bespoke_trigger)(struct snd_pcm_substream *, int,

30
sound/soc/mxs/mxs-saif.c
View File

@ -494,6 +494,7 @@ static int mxs_saif_trigger(struct snd_pcm_substream *substream, int cmd,
struct mxs_saif *saif = snd_soc_dai_get_drvdata(cpu_dai);
struct mxs_saif *master_saif;
u32 delay;
int ret;
master_saif = mxs_saif_get_master(saif);
if (!master_saif)
@ -503,23 +504,37 @@ static int mxs_saif_trigger(struct snd_pcm_substream *substream, int cmd,
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (saif->state == MXS_SAIF_STATE_RUNNING)
return 0;
dev_dbg(cpu_dai->dev, "start\n");
clk_enable(master_saif->clk);
if (!master_saif->mclk_in_use)
__raw_writel(BM_SAIF_CTRL_RUN,
master_saif->base + SAIF_CTRL + MXS_SET_ADDR);
ret = clk_enable(master_saif->clk);
if (ret) {
dev_err(saif->dev, "Failed to enable master clock\n");
return ret;
}
/*
* If the saif's master is not himself, we also need to enable
* itself clk for its internal basic logic to work.
*/
if (saif != master_saif) {
clk_enable(saif->clk);
ret = clk_enable(saif->clk);
if (ret) {
dev_err(saif->dev, "Failed to enable master clock\n");
clk_disable(master_saif->clk);
return ret;
}
__raw_writel(BM_SAIF_CTRL_RUN,
saif->base + SAIF_CTRL + MXS_SET_ADDR);
}
if (!master_saif->mclk_in_use)
__raw_writel(BM_SAIF_CTRL_RUN,
master_saif->base + SAIF_CTRL + MXS_SET_ADDR);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
/*
* write data to saif data register to trigger
@ -543,6 +558,7 @@ static int mxs_saif_trigger(struct snd_pcm_substream *substream, int cmd,
}
master_saif->ongoing = 1;
saif->state = MXS_SAIF_STATE_RUNNING;
dev_dbg(saif->dev, "CTRL 0x%x STAT 0x%x\n",
__raw_readl(saif->base + SAIF_CTRL),
@ -555,6 +571,9 @@ static int mxs_saif_trigger(struct snd_pcm_substream *substream, int cmd,
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (saif->state == MXS_SAIF_STATE_STOPPED)
return 0;
dev_dbg(cpu_dai->dev, "stop\n");
/* wait a while for the current sample to complete */
@ -575,6 +594,7 @@ static int mxs_saif_trigger(struct snd_pcm_substream *substream, int cmd,
}
master_saif->ongoing = 0;
saif->state = MXS_SAIF_STATE_STOPPED;
break;
default:

5
sound/soc/mxs/mxs-saif.h
View File

@ -124,6 +124,11 @@ struct mxs_saif {
u32 fifo_underrun;
u32 fifo_overrun;
enum {
MXS_SAIF_STATE_STOPPED,
MXS_SAIF_STATE_RUNNING,
} state;
};
extern int mxs_saif_put_mclk(unsigned int saif_id);

20
sound/soc/mxs/mxs-sgtl5000.c
View File

@ -122,14 +122,12 @@ static struct snd_soc_card mxs_sgtl5000 = {
.num_links = ARRAY_SIZE(mxs_sgtl5000_dai),
};
static int mxs_sgtl5000_probe_dt(struct platform_device *pdev)
static int mxs_sgtl5000_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mxs_sgtl5000;
int ret, i;
struct device_node *np = pdev->dev.of_node;
struct device_node *saif_np[2], *codec_np;
int i;
if (!np)
return 1; /* no device tree */
saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
@ -152,18 +150,6 @@ static int mxs_sgtl5000_probe_dt(struct platform_device *pdev)
of_node_put(saif_np[0]);
of_node_put(saif_np[1]);
return 0;
}
static int mxs_sgtl5000_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mxs_sgtl5000;
int ret;
ret = mxs_sgtl5000_probe_dt(pdev);
if (ret < 0)
return ret;
/*
* Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
* The Sgtl5000 sysclk is derived from saif0 mclk and it's range