ASoC: omap-mcbsp: Single function CLKR/FSR source mux configuration

Use single function for the CLKR/FSR mux configuration.
OMAP2/3 has 6 pin configuration on McBSP1 instance, while on OMAP4
McBSP4 instance have the 6 pin configuration so the omap2_mcbsp1_mux_* is
not correct name for all support OMAP versions
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>

sound/soc/omap/mcbsp.c

@@ -687,40 +687,36 @@ int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id)
 		return -EINVAL;
 }
 
-void omap2_mcbsp1_mux_clkr_src(struct omap_mcbsp *mcbsp, u8 mux)
+int omap_mcbsp_6pin_src_mux(struct omap_mcbsp *mcbsp, u8 mux)
 {
-	const char *src;
-
-	if (mcbsp->id != 1)
-		return;
+	const char *signal, *src;
+	int ret = 0;
 
-	if (mux == CLKR_SRC_CLKR)
+	switch (mux) {
+	case CLKR_SRC_CLKR:
+		signal = "clkr";
 		src = "clkr";
-	else if (mux == CLKR_SRC_CLKX)
+		break;
+	case CLKR_SRC_CLKX:
+		signal = "clkr";
 		src = "clkx";
-	else
-		return;
-
-	if (mcbsp->pdata->mux_signal)
-		mcbsp->pdata->mux_signal(mcbsp->dev, "clkr", src);
-}
-
-void omap2_mcbsp1_mux_fsr_src(struct omap_mcbsp *mcbsp, u8 mux)
-{
-	const char *src;
-
-	if (mcbsp->id != 1)
-		return;
-
-	if (mux == FSR_SRC_FSR)
+		break;
+	case FSR_SRC_FSR:
+		signal = "fsr";
 		src = "fsr";
-	else if (mux == FSR_SRC_FSX)
+		break;
+	case FSR_SRC_FSX:
+		signal = "fsr";
 		src = "fsx";
-	else
-		return;
+		break;
+	default:
+		return -EINVAL;
+	}
 
 	if (mcbsp->pdata->mux_signal)
-		mcbsp->pdata->mux_signal(mcbsp->dev, "fsr", src);
+		ret = mcbsp->pdata->mux_signal(mcbsp->dev, signal, src);
+
+	return ret;
 }
 
 #define max_thres(m)			(mcbsp->pdata->buffer_size)

sound/soc/omap/mcbsp.h

@@ -230,13 +230,11 @@ enum {
 #define XRDYEN			BIT(10)
 #define XEMPTYEOFEN		BIT(14)
 
-/* CLKR signal muxing options */
-#define CLKR_SRC_CLKR		0
-#define CLKR_SRC_CLKX		1
-
-/* FSR signal muxing options */
-#define FSR_SRC_FSR		0
-#define FSR_SRC_FSX		1
+/* Clock signal muxing options */
+#define CLKR_SRC_CLKR		0 /* CLKR signal is from the CLKR pin */
+#define CLKR_SRC_CLKX		1 /* CLKR signal is from the CLKX pin */
+#define FSR_SRC_FSR		2 /* FSR signal is from the FSR pin */
+#define FSR_SRC_FSX		3 /* FSR signal is from the FSX pin */
 
 /* McBSP functional clock sources */
 #define MCBSP_CLKS_PRCM_SRC	0
@@ -333,8 +331,7 @@ void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx);
 int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id);
 
 /* McBSP signal muxing API */
-void omap2_mcbsp1_mux_clkr_src(struct omap_mcbsp *mcbsp, u8 mux);
-void omap2_mcbsp1_mux_fsr_src(struct omap_mcbsp *mcbsp, u8 mux);
+int omap_mcbsp_6pin_src_mux(struct omap_mcbsp *mcbsp, u8 mux);
 
 /* Sidetone specific API */
 int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain);

sound/soc/omap/omap-mcbsp.c

@@ -554,22 +554,22 @@ static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
 	case OMAP_MCBSP_CLKR_SRC_CLKR:
 		if (cpu_class_is_omap1())
 			break;
-		omap2_mcbsp1_mux_clkr_src(mcbsp, CLKR_SRC_CLKR);
+		err = omap_mcbsp_6pin_src_mux(mcbsp, CLKR_SRC_CLKR);
 		break;
 	case OMAP_MCBSP_CLKR_SRC_CLKX:
 		if (cpu_class_is_omap1())
 			break;
-		omap2_mcbsp1_mux_clkr_src(mcbsp, CLKR_SRC_CLKX);
+		err = omap_mcbsp_6pin_src_mux(mcbsp, CLKR_SRC_CLKX);
 		break;
 	case OMAP_MCBSP_FSR_SRC_FSR:
 		if (cpu_class_is_omap1())
 			break;
-		omap2_mcbsp1_mux_fsr_src(mcbsp, FSR_SRC_FSR);
+		err = omap_mcbsp_6pin_src_mux(mcbsp, FSR_SRC_FSR);
 		break;
 	case OMAP_MCBSP_FSR_SRC_FSX:
 		if (cpu_class_is_omap1())
 			break;
-		omap2_mcbsp1_mux_fsr_src(mcbsp, FSR_SRC_FSX);
+		err = omap_mcbsp_6pin_src_mux(mcbsp, FSR_SRC_FSX);
 		break;
 	default:
 		err = -ENODEV;