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MLK-19115-2: ASoC: fsl_spdif: add support for enabling raw capture mode 

Since i.MX8 MQ SPDIF interface is able to capture raw data.
Add support in SPDIF driver for this functionality.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
(cherry picked from commit e13a302391f56a6bb547ff89e3fac73941cee429)
5.4-rM2-2.2.x-imx-squashed
Viorel Suman 2018-08-08 09:56:36 +03:00 committed by Dong Aisheng
parent 83fbe12324
commit fff54ed842
2 changed files with 44 additions and 0 deletions
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43
sound/soc/fsl/fsl_spdif.c
View File

@ -826,6 +826,39 @@ static int fsl_spdif_tx_vbit_put(struct snd_kcontrol *kcontrol,
return 0;
}
static int fsl_spdif_rx_rcm_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
struct regmap *regmap = spdif_priv->regmap;
u32 val;
regmap_read(regmap, REG_SPDIF_SCR, &val);
val = (val & SCR_RAW_CAPTURE_MODE) ? 1 : 0;
ucontrol->value.integer.value[0] = val;
return 0;
}
static int fsl_spdif_rx_rcm_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
struct regmap *regmap = spdif_priv->regmap;
u32 val = (ucontrol->value.integer.value[0] ? SCR_RAW_CAPTURE_MODE : 0);
if (val)
cpu_dai->driver->capture.formats |= SNDRV_PCM_FMTBIT_S32_LE;
else
cpu_dai->driver->capture.formats &= ~SNDRV_PCM_FMTBIT_S32_LE;
regmap_update_bits(regmap, REG_SPDIF_SCR, SCR_RAW_CAPTURE_MODE, val);
return 0;
}
/* DPLL lock information */
static int fsl_spdif_rxrate_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
@ -1007,6 +1040,16 @@ static struct snd_kcontrol_new fsl_spdif_ctrls[] = {
.get = fsl_spdif_usync_get,
.put = fsl_spdif_usync_put,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Rx Raw Capture Mode Bit",
.access = SNDRV_CTL_ELEM_ACCESS_READ |
SNDRV_CTL_ELEM_ACCESS_WRITE |
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ctl_boolean_mono_info,
.get = fsl_spdif_rx_rcm_get,
.put = fsl_spdif_rx_rcm_put,
},
};
static int fsl_spdif_dai_probe(struct snd_soc_dai *dai)

1
sound/soc/fsl/fsl_spdif.h
View File

@ -63,6 +63,7 @@
#define SCR_TXFIFO_FSEL_IF4 (0x1 << SCR_TXFIFO_FSEL_OFFSET)
#define SCR_TXFIFO_FSEL_IF8 (0x2 << SCR_TXFIFO_FSEL_OFFSET)
#define SCR_TXFIFO_FSEL_IF12 (0x3 << SCR_TXFIFO_FSEL_OFFSET)
#define SCR_RAW_CAPTURE_MODE (1 << 14)
#define SCR_LOW_POWER (1 << 13)
#define SCR_SOFT_RESET (1 << 12)
#define SCR_TXFIFO_CTRL_OFFSET 10