ASoC: fsl_spdif: Add support for 22.05 kHz sample rate

Add support for 22.05 kHz sample rate for TX.

Signed-off-by: Matus Gajdos <matuszpd@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20230719163154.19492-1-matuszpd@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: fsl_spdif: Add new registers included on i.MX8ULP

There are some new registers added on i.MX8ULP, they are
the SPDIF transmit Professional C channel registers,
192bit SPDIF receive C channel registers, and 192bit SPDIF
transmit C channel registers.

There are two output lines, SPDIF_OUT1 and SPDIF_OUT2, the
original REG_SPDIF_STCSCH and REG_SPDIF_STCSCL are used for
SPDIF_OUT1, the new REG_SPDIF_STCSPH and REG_SPDIF_STCSPL
are used for SPDIF_OUT2, the 192bit SPDIF C channel registers
are used for both.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1647408538-2982-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: fsl_spdif: add support for enabling raw capture mode

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>

ASoC: fsl_spdif: Add support for higher sample rates

Add 88200Hz and 176400Hz sample rates support for TX.
Add 88200Hz, 176400Hz, 192000Hz sample rates support for RX.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/1602557360-18795-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: fsl_spdif: fix TXCLK_DF mask

According to RM SPDIF TXCLK_DF mask is 7-bit wide.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: fsl_spdif: Switch to SPDX identifier

Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: fsl_spdif: Add support for output sample rates 96kHz and 192kHz

Add support for the output sample rates 96kHz and 192kHz.

Tested with a Cubox-i imx6 system and an Onkyo TX-SR607 receiver.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

ASoC: fsl_spdif: Improve coding style

1) Apply better indentations
2) Drop braces for single statement.
3) Use simpler ternary to reduce code.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

ASoC: fsl_spdif: Rename all _div to _df

We should have used _df by following the reference manual at the beginning.
So this patch just renames them.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

ASoC: fsl_spdif: Use clk_set_rate() for spdif root clock only

The clock mux for the Freescale S/PDIF controller has eight clock sources
while most of them are from other moudles and even system clocks that do
not allow a rate-changing operation.

So we here only allow the clk_set_rate() and clk_round_rate() happened to
spdif root clock, the private clock for S/PDIF controller.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

ASoC: fsl_spdif: Fix wrong OFFSET of STC_SYSCLK_DIV

It should use STC_SYSCLK_DIV_OFFSET. Thus fix it.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

ASoC: fsl: Add S/PDIF CPU DAI driver

This patch implements a device-tree-only CPU DAI driver for Freescale
S/PDIF controller that supports stereo playback and record feature.

Signed-off-by: Nicolin Chen <b42378@freescale.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>