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ASoC: change set_tdm_slot api to allow slot_width override.

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Extend set_tdm_slot to allow the user to arbitrarily set the frame width
and active TX/RX slots.

Updates magician.c and wm9081.c for the new set_tdm_slot(). wm9081.c
still doesn't handle the slot_width override.

While being there, correct an incorrect use of SlotsPerFrm(7) use in
bitmask on pxa-ssp.c (SSCR0_SlotsPerFrm(x) is (((x) - 1) << 24)) ).

(this series is meant for Mark's for-2.6.32 branch)

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Daniel Ribeiro 2009-06-15 21:44:31 -03:00 committed by Mark Brown
parent 9029bb316b
commit a5479e389e
5 changed files with 33 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/sound/soc-dai.h
View File

@ -106,7 +106,7 @@ int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int mask, int slots);
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width);
int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
@ -140,7 +140,8 @@ struct snd_soc_dai_ops {
*/
int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt);
int (*set_tdm_slot)(struct snd_soc_dai *dai,
unsigned int mask, int slots);
unsigned int tx_mask, unsigned int rx_mask,
int slots, int slot_width);
int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
/*

5
sound/soc/codecs/wm9081.c
View File

@ -1214,8 +1214,9 @@ static int wm9081_set_sysclk(struct snd_soc_dai *codec_dai,
return 0;
}
/* FIXME: Needs to handle slot_width */
static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int mask, int slots)
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
{
struct snd_soc_codec *codec = dai->codec;
unsigned int aif1 = wm9081_read(codec, WM9081_AUDIO_INTERFACE_1);
@ -1227,7 +1228,7 @@ static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT;
switch (mask) {
switch (rx_mask) {
case 1:
break;
case 2:

2
sound/soc/pxa/magician.c
View File

@ -190,7 +190,7 @@ static int magician_playback_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
return ret;
ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 0, 1, width);
if (ret < 0)
return ret;

27
sound/soc/pxa/pxa-ssp.c
View File

@ -375,21 +375,34 @@ static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai,
* Set the active slots in TDM/Network mode
*/
static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
unsigned int mask, int slots)
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
{
struct ssp_priv *priv = cpu_dai->private_data;
struct ssp_device *ssp = priv->dev.ssp;
u32 sscr0;
sscr0 = ssp_read_reg(ssp, SSCR0) & ~SSCR0_SlotsPerFrm(7);
sscr0 = ssp_read_reg(ssp, SSCR0);
sscr0 &= ~(SSCR0_MOD | SSCR0_SlotsPerFrm(8) | SSCR0_EDSS | SSCR0_DSS);
/* set number of active slots */
sscr0 |= SSCR0_SlotsPerFrm(slots);
/* set slot width */
if (slot_width > 16)
sscr0 |= SSCR0_EDSS | SSCR0_DataSize(slot_width - 16);
else
sscr0 |= SSCR0_DataSize(slot_width);
if (slots > 1) {
/* enable network mode */
sscr0 |= SSCR0_MOD;
/* set number of active slots */
sscr0 |= SSCR0_SlotsPerFrm(slots);
/* set active slot mask */
ssp_write_reg(ssp, SSTSA, tx_mask);
ssp_write_reg(ssp, SSRSA, rx_mask);
}
ssp_write_reg(ssp, SSCR0, sscr0);
/* set active slot mask */
ssp_write_reg(ssp, SSTSA, mask);
ssp_write_reg(ssp, SSRSA, mask);
return 0;
}

9
sound/soc/soc-core.c
View File

@ -2223,17 +2223,20 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
/**
* snd_soc_dai_set_tdm_slot - configure DAI TDM.
* @dai: DAI
* @mask: DAI specific mask representing used slots.
* @tx_mask: bitmask representing active TX slots.
* @rx_mask: bitmask representing active RX slots.
* @slots: Number of slots in use.
* @slot_width: Width in bits for each slot.
*
* Configures a DAI for TDM operation. Both mask and slots are codec and DAI
* specific.
*/
int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
unsigned int mask, int slots)
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
{
if (dai->ops && dai->ops->set_tdm_slot)
return dai->ops->set_tdm_slot(dai, mask, slots);
return dai->ops->set_tdm_slot(dai, tx_mask, rx_mask,
slots, slot_width);
else
return -EINVAL;
}