From: Lothar Waßmann <LW@KARO-electronics.de>
Date: Fri, 4 Dec 2015 12:40:30 +0000 (+0100)
Subject: ASoC: fsl: make audmux optional for i.MX6UL support
X-Git-Tag: KARO-TXUL-2015-12-04~6
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=commitdiff_plain;h=b90fc6a4a4fd0a4620f36dea9d6200939890f710

ASoC: fsl: make audmux optional for i.MX6UL support
---

diff --git a/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt b/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt
index 2f89db88fd57..fd46671070b7 100644
--- a/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt
+++ b/Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt
@@ -6,7 +6,7 @@ Required properties:
 
   - model		: The user-visible name of this sound complex
 
-  - ssi-controller	: The phandle of the i.MX SSI controller
+  - ssi-controller	: The phandle of the i.MX SSI (or SAI) controller
 
   - audio-codec		: The phandle of the SGTL5000 audio codec
 
@@ -39,6 +39,16 @@ Required properties:
 Note: The AUDMUX port numbering should start at 1, which is consistent with
 hardware manual.
 
+Optional properties:
+  - fsl,no-audmux	: boolean
+    			  Required for i.MX6UL (and maybe other SoCs)
+    			  which don't have an AUDMUX, but still
+			  feature the same audio subsystem otherwise.
+
+Note: Setting this property will make mux-int-port and mux-ext-port
+obsolete.
+
+
 Example:
 
 sound {
@@ -54,3 +64,17 @@ sound {
 	mux-int-port = <1>;
 	mux-ext-port = <3>;
 };
+
+or (e.g. for i.MX6UL):
+sound {
+	compatible = "karo,imx6ul-tx6ul-sgtl5000",
+		     "fsl,imx-audio-sgtl5000";
+	model = "imx6ul-tx6ul-sgtl5000";
+	ssi-controller = <&sai2>;
+	audio-codec = <&sgtl5000>;
+	audio-routing =
+		"MIC_IN", "Mic Jack",
+		"Mic Jack", "Mic Bias",
+		"Headphone Jack", "HP_OUT";
+	fsl,no-audmux;
+};
diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c
index b99e0b5e00e9..7cefb4065266 100644
--- a/sound/soc/fsl/imx-sgtl5000.c
+++ b/sound/soc/fsl/imx-sgtl5000.c
@@ -65,40 +65,42 @@ static int imx_sgtl5000_probe(struct platform_device *pdev)
 	int int_port, ext_port;
 	int ret;
 
-	ret = of_property_read_u32(np, "mux-int-port", &int_port);
-	if (ret) {
-		dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
-		return ret;
-	}
-	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
-	if (ret) {
-		dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
-		return ret;
-	}
-
-	/*
-	 * The port numbering in the hardware manual starts at 1, while
-	 * the audmux API expects it starts at 0.
-	 */
-	int_port--;
-	ext_port--;
-	ret = imx_audmux_v2_configure_port(int_port,
-			IMX_AUDMUX_V2_PTCR_SYN |
-			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
-			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
-			IMX_AUDMUX_V2_PTCR_TFSDIR |
-			IMX_AUDMUX_V2_PTCR_TCLKDIR,
-			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
-	if (ret) {
-		dev_err(&pdev->dev, "audmux internal port setup failed\n");
-		return ret;
-	}
-	ret = imx_audmux_v2_configure_port(ext_port,
-			IMX_AUDMUX_V2_PTCR_SYN,
-			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
-	if (ret) {
-		dev_err(&pdev->dev, "audmux external port setup failed\n");
-		return ret;
+	if (!of_property_read_bool(np, "fsl,no-audmux")) {
+		ret = of_property_read_u32(np, "mux-int-port", &int_port);
+		if (ret) {
+			dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
+			return ret;
+		}
+		ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
+		if (ret) {
+			dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
+			return ret;
+		}
+
+		/*
+		 * The port numbering in the hardware manual starts at 1, while
+		 * the audmux API expects it starts at 0.
+		 */
+		int_port--;
+		ext_port--;
+		ret = imx_audmux_v2_configure_port(int_port,
+				IMX_AUDMUX_V2_PTCR_SYN |
+				IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
+				IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
+				IMX_AUDMUX_V2_PTCR_TFSDIR |
+				IMX_AUDMUX_V2_PTCR_TCLKDIR,
+				IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
+		if (ret) {
+			dev_err(&pdev->dev, "audmux internal port setup failed\n");
+			return ret;
+		}
+		ret = imx_audmux_v2_configure_port(ext_port,
+				IMX_AUDMUX_V2_PTCR_SYN,
+				IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
+		if (ret) {
+			dev_err(&pdev->dev, "audmux external port setup failed\n");
+			return ret;
+		}
 	}
 
 	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);