[PATCH 1/2] ASoC: dt-bindings: fsl_spdif: Add new compatible string for i.MX8QM

[PATCH 1/2] ASoC: dt-bindings: fsl_spdif: Add new compatible string for i.MX8QM

[Shengjiu Wang]

Add new compatible string "fsl,imx8qm-spdif" for supporting spdif
module on i.MX8QM.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 Documentation/devicetree/bindings/sound/fsl,spdif.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
index 2ac671f5cb9b..50449b6d1048 100644
--- a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
@@ -20,6 +20,7 @@ properties:
       - fsl,imx35-spdif
       - fsl,vf610-spdif
       - fsl,imx6sx-spdif
+      - fsl,imx8qm-spdif
 
   reg:
     maxItems: 1
-- 
2.27.0

[PATCH 2/2] ASoC: fsl_spdif: Add support for i.MX8QM platform

[Shengjiu Wang]

On i.MX8QM, there are separate interrupts for TX and RX.

As the EDMA can't be configured to swing back to first FIFO
after writing the second FIFO, so we need to force the burst
size to be 2 on i.MX8QM. And EDMA don't support to shift
the data from S24_LE to S16_LE, so the supported TX format
is also different on i.MX8QM.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 sound/soc/fsl/fsl_spdif.c | 57 ++++++++++++++++++++++++++++++++-------
 1 file changed, 47 insertions(+), 10 deletions(-)

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index f41496cf5b63..5fa178f3f497 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -49,10 +49,18 @@ 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
+ * @interrupts: interrupt number
+ * @tx_burst: tx maxburst size
+ * @rx_burst: rx maxburst size
+ * @tx_formats: tx supported data format
  */
 struct fsl_spdif_soc_data {
 	bool imx;
 	bool shared_root_clock;
+	u32 interrupts;
+	u32 tx_burst;
+	u32 rx_burst;
+	u64 tx_formats;
 };
 
 /*
@@ -128,16 +136,38 @@ struct fsl_spdif_priv {
 static struct fsl_spdif_soc_data fsl_spdif_vf610 = {
 	.imx = false,
 	.shared_root_clock = false,
+	.interrupts = 1,
+	.tx_burst = FSL_SPDIF_TXFIFO_WML,
+	.rx_burst = FSL_SPDIF_RXFIFO_WML,
+	.tx_formats = FSL_SPDIF_FORMATS_PLAYBACK,
 };
 
 static struct fsl_spdif_soc_data fsl_spdif_imx35 = {
 	.imx = true,
 	.shared_root_clock = false,
+	.interrupts = 1,
+	.tx_burst = FSL_SPDIF_TXFIFO_WML,
+	.rx_burst = FSL_SPDIF_RXFIFO_WML,
+	.tx_formats = FSL_SPDIF_FORMATS_PLAYBACK,
 };
 
 static struct fsl_spdif_soc_data fsl_spdif_imx6sx = {
 	.imx = true,
 	.shared_root_clock = true,
+	.interrupts = 1,
+	.tx_burst = FSL_SPDIF_TXFIFO_WML,
+	.rx_burst = FSL_SPDIF_RXFIFO_WML,
+	.tx_formats = FSL_SPDIF_FORMATS_PLAYBACK,
+
+};
+
+static struct fsl_spdif_soc_data fsl_spdif_imx8qm = {
+	.imx = true,
+	.shared_root_clock = true,
+	.interrupts = 2,
+	.tx_burst = 2,		/* Applied for EDMA */
+	.rx_burst = 2,		/* Applied for EDMA */
+	.tx_formats = SNDRV_PCM_FMTBIT_S24_LE,  /* Applied for EDMA */
 };
 
 /* Check if clk is a root clock that does not share clock source with others */
@@ -1283,6 +1313,8 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 	/* Initialize this copy of the CPU DAI driver structure */
 	memcpy(&spdif_priv->cpu_dai_drv, &fsl_spdif_dai, sizeof(fsl_spdif_dai));
 	spdif_priv->cpu_dai_drv.name = dev_name(&pdev->dev);
+	spdif_priv->cpu_dai_drv.playback.formats =
+				spdif_priv->soc->tx_formats;
 
 	/* Get the addresses and IRQ */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1297,15 +1329,19 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 		return PTR_ERR(spdif_priv->regmap);
 	}
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
+	for (i = 0; i < spdif_priv->soc->interrupts; i++) {
+		irq = platform_get_irq(pdev, i);
+		if (irq < 0) {
+			dev_err(&pdev->dev, "no irq for node %s\n", pdev->name);
+			return irq;
+		}
 
-	ret = devm_request_irq(&pdev->dev, irq, spdif_isr, 0,
-			       dev_name(&pdev->dev), spdif_priv);
-	if (ret) {
-		dev_err(&pdev->dev, "could not claim irq %u\n", irq);
-		return ret;
+		ret = devm_request_irq(&pdev->dev, irq, spdif_isr, 0,
+				       dev_name(&pdev->dev), spdif_priv);
+		if (ret) {
+			dev_err(&pdev->dev, "could not claim irq %u\n", irq);
+			return ret;
+		}
 	}
 
 	/* Get system clock for rx clock rate calculation */
@@ -1354,8 +1390,8 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 
 	spdif_priv->dpll_locked = false;
 
-	spdif_priv->dma_params_tx.maxburst = FSL_SPDIF_TXFIFO_WML;
-	spdif_priv->dma_params_rx.maxburst = FSL_SPDIF_RXFIFO_WML;
+	spdif_priv->dma_params_tx.maxburst = spdif_priv->soc->tx_burst;
+	spdif_priv->dma_params_rx.maxburst = spdif_priv->soc->rx_burst;
 	spdif_priv->dma_params_tx.addr = res->start + REG_SPDIF_STL;
 	spdif_priv->dma_params_rx.addr = res->start + REG_SPDIF_SRL;
 
@@ -1468,6 +1504,7 @@ static const struct of_device_id fsl_spdif_dt_ids[] = {
 	{ .compatible = "fsl,imx35-spdif", .data = &fsl_spdif_imx35, },
 	{ .compatible = "fsl,vf610-spdif", .data = &fsl_spdif_vf610, },
 	{ .compatible = "fsl,imx6sx-spdif", .data = &fsl_spdif_imx6sx, },
+	{ .compatible = "fsl,imx8qm-spdif", .data = &fsl_spdif_imx8qm, },
 	{}
 };
 MODULE_DEVICE_TABLE(of, fsl_spdif_dt_ids);
-- 
2.27.0

Re: [PATCH 2/2] ASoC: fsl_spdif: Add support for i.MX8QM platform

[Nicolin Chen]

On Thu, Oct 15, 2020 at 01:28:48PM +0800, Shengjiu Wang wrote:
> On i.MX8QM, there are separate interrupts for TX and RX.
> 
> As the EDMA can't be configured to swing back to first FIFO
> after writing the second FIFO, so we need to force the burst
> size to be 2 on i.MX8QM. And EDMA don't support to shift
> the data from S24_LE to S16_LE, so the supported TX format
> is also different on i.MX8QM.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>

One small nit, yet I am okay if you don't resend. So:

Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>

>  /* Check if clk is a root clock that does not share clock source with others */
> @@ -1283,6 +1313,8 @@ static int fsl_spdif_probe(struct platform_device *pdev)
>  	/* Initialize this copy of the CPU DAI driver structure */
>  	memcpy(&spdif_priv->cpu_dai_drv, &fsl_spdif_dai, sizeof(fsl_spdif_dai));
>  	spdif_priv->cpu_dai_drv.name = dev_name(&pdev->dev);
> +	spdif_priv->cpu_dai_drv.playback.formats =
> +				spdif_priv->soc->tx_formats;

Kernel no longer has strict 80-character limit now, and it seems
to fits 80 characters?

Re: [PATCH 1/2] ASoC: dt-bindings: fsl_spdif: Add new compatible string for i.MX8QM

[Rob Herring]

On Thu, 15 Oct 2020 13:28:47 +0800, Shengjiu Wang wrote:
> Add new compatible string "fsl,imx8qm-spdif" for supporting spdif
> module on i.MX8QM.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
> ---
>  Documentation/devicetree/bindings/sound/fsl,spdif.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH 1/2] ASoC: dt-bindings: fsl_spdif: Add new compatible string for i.MX8QM

[Mark Brown]

On Thu, 15 Oct 2020 13:28:47 +0800, Shengjiu Wang wrote:
> Add new compatible string "fsl,imx8qm-spdif" for supporting spdif
> module on i.MX8QM.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: dt-bindings: fsl_spdif: Add new compatible string for i.MX8QM
      commit: 87b2fc1139a13cf81d0a95fb2cbaba7daeee8908
[2/2] ASoC: fsl_spdif: Add support for i.MX8QM platform
      commit: 516232e3609f485be04445b03723fbaed64a5321

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark