RZ/G2L SSI: Update interrupt numbers

Merge series from Prabhakar <prabhakar.csengg@gmail.com>:

Hi All,

This patch series aims to fix interrupt numbers for SSI channels and updates
the DT binding and the driver accordingly.

Note, this patch series applies on top of [0].

[0] https://patchwork.kernel.org/project/linux-renesas-soc/cover/20230131223529.11905-1-prabhakar.mahadev-lad.rj@bp.renesas.com/

Cheers,
Prabhakar

Lad Prabhakar (4):
  ASoC: dt-bindings: renesas,rz-ssi: Update interrupts and
    interrupt-names properties
  ASoC: sh: rz-ssi: Update interrupt handling for half duplex channels
  arm64: dts: renesas: r9a07g044: Update IRQ numbers for SSI channels
  arm64: dts: renesas: r9a07g043: Update IRQ numbers for SSI channels

 .../bindings/sound/renesas,rz-ssi.yaml        | 21 ++++---
 arch/arm64/boot/dts/renesas/r9a07g043.dtsi    | 19 +++---
 arch/arm64/boot/dts/renesas/r9a07g044.dtsi    | 19 +++---
 sound/soc/sh/rz-ssi.c                         | 63 +++++++++++++------
 4 files changed, 70 insertions(+), 52 deletions(-)

--
2.25.1

Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml

@@ -25,14 +25,18 @@ properties:
     maxItems: 1
 
   interrupts:
-    maxItems: 4
+    minItems: 2
+    maxItems: 3
 
   interrupt-names:
-    items:
-      - const: int_req
-      - const: dma_rx
-      - const: dma_tx
-      - const: dma_rt
+    oneOf:
+      - items:
+          - const: int_req
+          - const: dma_rx
+          - const: dma_tx
+      - items:
+          - const: int_req
+          - const: dma_rt
 
   clocks:
     maxItems: 4
@@ -106,9 +110,8 @@ examples:
             reg = <0x10049c00 0x400>;
             interrupts = <GIC_SPI 326 IRQ_TYPE_LEVEL_HIGH>,
                          <GIC_SPI 327 IRQ_TYPE_EDGE_RISING>,
-                         <GIC_SPI 328 IRQ_TYPE_EDGE_RISING>,
-                         <GIC_SPI 329 IRQ_TYPE_EDGE_RISING>;
-            interrupt-names = "int_req", "dma_rx", "dma_tx", "dma_rt";
+                         <GIC_SPI 328 IRQ_TYPE_EDGE_RISING>;
+            interrupt-names = "int_req", "dma_rx", "dma_tx";
             clocks = <&cpg CPG_MOD R9A07G044_SSI0_PCLK2>,
                      <&cpg CPG_MOD R9A07G044_SSI0_PCLK_SFR>,
                      <&audio_clk1>,

sound/soc/sh/rz-ssi.c

@@ -109,6 +109,7 @@ struct rz_ssi_priv {
 	int irq_int;
 	int irq_tx;
 	int irq_rx;
+	int irq_rt;
 
 	spinlock_t lock;
 
@@ -565,6 +566,17 @@ static irqreturn_t rz_ssi_interrupt(int irq, void *data)
 		rz_ssi_reg_mask_setl(ssi, SSIFSR, SSIFSR_RDF, 0);
 	}
 
+	if (irq == ssi->irq_rt) {
+		struct snd_pcm_substream *substream = strm->substream;
+
+		if (rz_ssi_stream_is_play(ssi, substream)) {
+			strm->transfer(ssi, &ssi->playback);
+		} else {
+			strm->transfer(ssi, &ssi->capture);
+			rz_ssi_reg_mask_setl(ssi, SSIFSR, SSIFSR_RDF, 0);
+		}
+	}
+
 	return IRQ_HANDLED;
 }
 
@@ -993,26 +1005,39 @@ static int rz_ssi_probe(struct platform_device *pdev)
 	if (!rz_ssi_is_dma_enabled(ssi)) {
 		/* Tx and Rx interrupts (pio only) */
 		ssi->irq_tx = platform_get_irq_byname(pdev, "dma_tx");
-		if (ssi->irq_tx < 0)
-			return ssi->irq_tx;
-
-		ret = devm_request_irq(&pdev->dev, ssi->irq_tx,
-				       &rz_ssi_interrupt, 0,
-				       dev_name(&pdev->dev), ssi);
-		if (ret < 0)
-			return dev_err_probe(&pdev->dev, ret,
-					     "irq request error (dma_tx)\n");
-
 		ssi->irq_rx = platform_get_irq_byname(pdev, "dma_rx");
-		if (ssi->irq_rx < 0)
-			return ssi->irq_rx;
-
-		ret = devm_request_irq(&pdev->dev, ssi->irq_rx,
-				       &rz_ssi_interrupt, 0,
-				       dev_name(&pdev->dev), ssi);
-		if (ret < 0)
-			return dev_err_probe(&pdev->dev, ret,
-					     "irq request error (dma_rx)\n");
+		if (ssi->irq_tx == -ENXIO && ssi->irq_rx == -ENXIO) {
+			ssi->irq_rt = platform_get_irq_byname(pdev, "dma_rt");
+			if (ssi->irq_rt < 0)
+				return ssi->irq_rt;
+
+			ret = devm_request_irq(&pdev->dev, ssi->irq_rt,
+					       &rz_ssi_interrupt, 0,
+					       dev_name(&pdev->dev), ssi);
+			if (ret < 0)
+				return dev_err_probe(&pdev->dev, ret,
+						"irq request error (dma_tx)\n");
+		} else {
+			if (ssi->irq_tx < 0)
+				return ssi->irq_tx;
+
+			if (ssi->irq_rx < 0)
+				return ssi->irq_rx;
+
+			ret = devm_request_irq(&pdev->dev, ssi->irq_tx,
+					       &rz_ssi_interrupt, 0,
+					       dev_name(&pdev->dev), ssi);
+			if (ret < 0)
+				return dev_err_probe(&pdev->dev, ret,
+						"irq request error (dma_tx)\n");
+
+			ret = devm_request_irq(&pdev->dev, ssi->irq_rx,
+					       &rz_ssi_interrupt, 0,
+					       dev_name(&pdev->dev), ssi);
+			if (ret < 0)
+				return dev_err_probe(&pdev->dev, ret,
+						"irq request error (dma_rx)\n");
+		}
 	}
 
 	ssi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);