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Merge branch 'for-2.6.31' into for-2.6.32

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This commit is contained in:
Mark Brown 2009-08-07 11:42:01 +01:00
commit b9b5cc26d0
3 changed files with 39 additions and 25 deletions
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4
arch/arm/plat-omap/include/mach/mcbsp.h
View File

@ -387,8 +387,8 @@ void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config);
int omap_mcbsp_request(unsigned int id);
void omap_mcbsp_free(unsigned int id);
void omap_mcbsp_start(unsigned int id);
void omap_mcbsp_stop(unsigned int id);
void omap_mcbsp_start(unsigned int id, int tx, int rx);
void omap_mcbsp_stop(unsigned int id, int tx, int rx);
void omap_mcbsp_xmit_word(unsigned int id, u32 word);
u32 omap_mcbsp_recv_word(unsigned int id);

50
arch/arm/plat-omap/mcbsp.c
View File

@ -328,14 +328,15 @@ void omap_mcbsp_free(unsigned int id)
EXPORT_SYMBOL(omap_mcbsp_free);
/*
* Here we start the McBSP, by enabling the sample
* generator, both transmitter and receivers,
* and the frame sync.
* Here we start the McBSP, by enabling transmitter, receiver or both.
* If no transmitter or receiver is active prior calling, then sample-rate
* generator and frame sync are started.
*/
void omap_mcbsp_start(unsigned int id)
void omap_mcbsp_start(unsigned int id, int tx, int rx)
{
struct omap_mcbsp *mcbsp;
void __iomem *io_base;
int idle;
u16 w;
if (!omap_mcbsp_check_valid_id(id)) {
@ -348,32 +349,40 @@ void omap_mcbsp_start(unsigned int id)
mcbsp->rx_word_length = (OMAP_MCBSP_READ(io_base, RCR1) >> 5) & 0x7;
mcbsp->tx_word_length = (OMAP_MCBSP_READ(io_base, XCR1) >> 5) & 0x7;
/* Start the sample generator */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 6));
idle = !((OMAP_MCBSP_READ(io_base, SPCR2) |
OMAP_MCBSP_READ(io_base, SPCR1)) & 1);
if (idle) {
/* Start the sample generator */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 6));
}
/* Enable transmitter and receiver */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w | 1);
OMAP_MCBSP_WRITE(io_base, SPCR2, w | (tx & 1));
w = OMAP_MCBSP_READ(io_base, SPCR1);
OMAP_MCBSP_WRITE(io_base, SPCR1, w | 1);
OMAP_MCBSP_WRITE(io_base, SPCR1, w | (rx & 1));
udelay(100);
/* Start frame sync */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 7));
if (idle) {
/* Start frame sync */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 7));
}
/* Dump McBSP Regs */
omap_mcbsp_dump_reg(id);
}
EXPORT_SYMBOL(omap_mcbsp_start);
void omap_mcbsp_stop(unsigned int id)
void omap_mcbsp_stop(unsigned int id, int tx, int rx)
{
struct omap_mcbsp *mcbsp;
void __iomem *io_base;
int idle;
u16 w;
if (!omap_mcbsp_check_valid_id(id)) {
@ -386,15 +395,20 @@ void omap_mcbsp_stop(unsigned int id)
/* Reset transmitter */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(1));
OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(tx & 1));
/* Reset receiver */
w = OMAP_MCBSP_READ(io_base, SPCR1);
OMAP_MCBSP_WRITE(io_base, SPCR1, w & ~(1));
OMAP_MCBSP_WRITE(io_base, SPCR1, w & ~(rx & 1));
/* Reset the sample rate generator */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(1 << 6));
idle = !((OMAP_MCBSP_READ(io_base, SPCR2) |
OMAP_MCBSP_READ(io_base, SPCR1)) & 1);
if (idle) {
/* Reset the sample rate generator */
w = OMAP_MCBSP_READ(io_base, SPCR2);
OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(1 << 6));
}
}
EXPORT_SYMBOL(omap_mcbsp_stop);

10
sound/soc/omap/omap-mcbsp.c
View File

@ -183,21 +183,21 @@ static int omap_mcbsp_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
int err = 0;
int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (!mcbsp_data->active++)
omap_mcbsp_start(mcbsp_data->bus_id);
mcbsp_data->active++;
omap_mcbsp_start(mcbsp_data->bus_id, play, !play);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (!--mcbsp_data->active)
omap_mcbsp_stop(mcbsp_data->bus_id);
omap_mcbsp_stop(mcbsp_data->bus_id, play, !play);
mcbsp_data->active--;
break;
default:
err = -EINVAL;