From: Viorel Suman viorel.suman@nxp.com

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 --- sound/soc/fsl/fsl_spdif.c | 67 +++++++++++++++++++++++++++++++++++++++ sound/soc/fsl/fsl_spdif.h | 1 + 2 files changed, 68 insertions(+)

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index c631de325a6e..2a76714eb8e6 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -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); diff --git a/sound/soc/fsl/fsl_spdif.h b/sound/soc/fsl/fsl_spdif.h index d5f1dfd58740..bff8290e71f2 100644 --- a/sound/soc/fsl/fsl_spdif.h +++ b/sound/soc/fsl/fsl_spdif.h @@ -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