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ASoC: fsl_spdif: add support for enabling raw capture mode

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Since i.MX8MM 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>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1619425444-8666-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Viorel Suman 2021-04-26 16:24:04 +08:00 committed by Mark Brown
parent 3f0d23e849
commit 604e517844
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 68 additions and 0 deletions
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67
sound/soc/fsl/fsl_spdif.c
View File

@ -49,6 +49,7 @@ static u8 srpc_dpll_locked[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0xa, 0xb };
* @imx: for imx platform
* @shared_root_clock: flag of sharing a clock source with others;
* so the driver shouldn't set root clock rate
* @raw_capture_mode: if raw capture mode support
* @interrupts: interrupt number
* @tx_burst: tx maxburst size
* @rx_burst: rx maxburst size
@ -57,6 +58,7 @@ static u8 srpc_dpll_locked[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0xa, 0xb };
struct fsl_spdif_soc_data {
bool imx;
bool shared_root_clock;
bool raw_capture_mode;
u32 interrupts;
u32 tx_burst;
u32 rx_burst;
@ -136,6 +138,7 @@ struct fsl_spdif_priv {
static struct fsl_spdif_soc_data fsl_spdif_vf610 = {
.imx = false,
.shared_root_clock = false,
.raw_capture_mode = false,
.interrupts = 1,
.tx_burst = FSL_SPDIF_TXFIFO_WML,
.rx_burst = FSL_SPDIF_RXFIFO_WML,
@ -145,6 +148,7 @@ static struct fsl_spdif_soc_data fsl_spdif_vf610 = {
static struct fsl_spdif_soc_data fsl_spdif_imx35 = {
.imx = true,
.shared_root_clock = false,
.raw_capture_mode = false,
.interrupts = 1,
.tx_burst = FSL_SPDIF_TXFIFO_WML,
.rx_burst = FSL_SPDIF_RXFIFO_WML,
@ -154,6 +158,7 @@ static struct fsl_spdif_soc_data fsl_spdif_imx35 = {
static struct fsl_spdif_soc_data fsl_spdif_imx6sx = {
.imx = true,
.shared_root_clock = true,
.raw_capture_mode = false,
.interrupts = 1,
.tx_burst = FSL_SPDIF_TXFIFO_WML,
.rx_burst = FSL_SPDIF_RXFIFO_WML,
@ -164,12 +169,23 @@ static struct fsl_spdif_soc_data fsl_spdif_imx6sx = {
static struct fsl_spdif_soc_data fsl_spdif_imx8qm = {
.imx = true,
.shared_root_clock = true,
.raw_capture_mode = false,
.interrupts = 2,
.tx_burst = 2, /* Applied for EDMA */
.rx_burst = 2, /* Applied for EDMA */
.tx_formats = SNDRV_PCM_FMTBIT_S24_LE, /* Applied for EDMA */
};
static struct fsl_spdif_soc_data fsl_spdif_imx8mm = {
.imx = true,
.shared_root_clock = false,
.raw_capture_mode = true,
.interrupts = 1,
.tx_burst = FSL_SPDIF_TXFIFO_WML,
.rx_burst = FSL_SPDIF_RXFIFO_WML,
.tx_formats = FSL_SPDIF_FORMATS_PLAYBACK,
};
/* Check if clk is a root clock that does not share clock source with others */
static inline bool fsl_spdif_can_set_clk_rate(struct fsl_spdif_priv *spdif, int clk)
{
@ -846,6 +862,39 @@ 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)
@ -1029,6 +1078,19 @@ static struct snd_kcontrol_new fsl_spdif_ctrls[] = {
},
};
static struct snd_kcontrol_new fsl_spdif_ctrls_rcm[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Raw Capture Mode",
.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)
{
struct fsl_spdif_priv *spdif_private = snd_soc_dai_get_drvdata(dai);
@ -1038,6 +1100,10 @@ static int fsl_spdif_dai_probe(struct snd_soc_dai *dai)
snd_soc_add_dai_controls(dai, fsl_spdif_ctrls, ARRAY_SIZE(fsl_spdif_ctrls));
if (spdif_private->soc->raw_capture_mode)
snd_soc_add_dai_controls(dai, fsl_spdif_ctrls_rcm,
ARRAY_SIZE(fsl_spdif_ctrls_rcm));
/*Clear the val bit for Tx*/
regmap_update_bits(spdif_private->regmap, REG_SPDIF_SCR,
SCR_VAL_MASK, SCR_VAL_CLEAR);
@ -1476,6 +1542,7 @@ static const struct of_device_id fsl_spdif_dt_ids[] = {
{ .compatible = "fsl,vf610-spdif", .data = &fsl_spdif_vf610, },
{ .compatible = "fsl,imx6sx-spdif", .data = &fsl_spdif_imx6sx, },
{ .compatible = "fsl,imx8qm-spdif", .data = &fsl_spdif_imx8qm, },
{ .compatible = "fsl,imx8mm-spdif", .data = &fsl_spdif_imx8mm, },
{}
};
MODULE_DEVICE_TABLE(of, fsl_spdif_dt_ids);

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 BIT(14)
#define SCR_LOW_POWER (1 << 13)
#define SCR_SOFT_RESET (1 << 12)
#define SCR_TXFIFO_CTRL_OFFSET 10