soc: fsl: cpm1: tsa: Introduce tsa_setup() and its CPM1 compatible version

Current code handles the CPM1 version of TSA. Setting up TSA consists in
handling SIMODE and SIGMR registers. These registers are CPM1 specific.

Setting up the QUICC Engine (QE) version of TSA is slightly different.

In order to prepare the support for QE version, clearly identify these
registers as CPM1 compatible and isolate their handling in a CPM1
specific function.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20240808071132.149251-12-herve.codina@bootlin.comSigned-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

drivers/soc/fsl/qe/tsa.c

@@ -32,14 +32,14 @@
 #define TSA_CPM1_SIRAM_ENTRY_CSEL_SMC2	FIELD_PREP_CONST(TSA_CPM1_SIRAM_ENTRY_CSEL_MASK, 0x6)
 
 /* SI mode register (32 bits) */
-#define TSA_SIMODE	0x00
-#define   TSA_SIMODE_SMC2			BIT(31)
-#define   TSA_SIMODE_SMC1			BIT(15)
-#define   TSA_SIMODE_TDMA_MASK			GENMASK(11, 0)
-#define   TSA_SIMODE_TDMA(x)			FIELD_PREP(TSA_SIMODE_TDMA_MASK, x)
-#define   TSA_SIMODE_TDMB_MASK			GENMASK(27, 16)
-#define   TSA_SIMODE_TDMB(x)			FIELD_PREP(TSA_SIMODE_TDMB_MASK, x)
-#define     TSA_SIMODE_TDM_MASK			GENMASK(11, 0)
+#define TSA_CPM1_SIMODE		0x00
+#define   TSA_CPM1_SIMODE_SMC2			BIT(31)
+#define   TSA_CPM1_SIMODE_SMC1			BIT(15)
+#define   TSA_CPM1_SIMODE_TDMA_MASK		GENMASK(11, 0)
+#define   TSA_CPM1_SIMODE_TDMA(x)		FIELD_PREP(TSA_CPM1_SIMODE_TDMA_MASK, x)
+#define   TSA_CPM1_SIMODE_TDMB_MASK		GENMASK(27, 16)
+#define   TSA_CPM1_SIMODE_TDMB(x)		FIELD_PREP(TSA_CPM1_SIMODE_TDMB_MASK, x)
+#define     TSA_CPM1_SIMODE_TDM_MASK		GENMASK(11, 0)
 #define     TSA_SIMODE_TDM_SDM_MASK		GENMASK(11, 10)
 #define       TSA_SIMODE_TDM_SDM_NORM		FIELD_PREP_CONST(TSA_SIMODE_TDM_SDM_MASK, 0x0)
 #define       TSA_SIMODE_TDM_SDM_ECHO		FIELD_PREP_CONST(TSA_SIMODE_TDM_SDM_MASK, 0x1)
@@ -49,22 +49,22 @@
 #define     TSA_SIMODE_TDM_RFSD(x)		FIELD_PREP(TSA_SIMODE_TDM_RFSD_MASK, x)
 #define     TSA_SIMODE_TDM_DSC			BIT(7)
 #define     TSA_SIMODE_TDM_CRT			BIT(6)
-#define     TSA_SIMODE_TDM_STZ			BIT(5)
+#define     TSA_CPM1_SIMODE_TDM_STZ		BIT(5)
 #define     TSA_SIMODE_TDM_CE			BIT(4)
 #define     TSA_SIMODE_TDM_FE			BIT(3)
 #define     TSA_SIMODE_TDM_GM			BIT(2)
 #define     TSA_SIMODE_TDM_TFSD_MASK		GENMASK(1, 0)
 #define     TSA_SIMODE_TDM_TFSD(x)		FIELD_PREP(TSA_SIMODE_TDM_TFSD_MASK, x)
 
-/* SI global mode register (8 bits) */
-#define TSA_SIGMR	0x04
-#define TSA_SIGMR_ENB			BIT(3)
-#define TSA_SIGMR_ENA			BIT(2)
-#define TSA_SIGMR_RDM_MASK		GENMASK(1, 0)
-#define   TSA_SIGMR_RDM_STATIC_TDMA	FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x0)
-#define   TSA_SIGMR_RDM_DYN_TDMA	FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x1)
-#define   TSA_SIGMR_RDM_STATIC_TDMAB	FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x2)
-#define   TSA_SIGMR_RDM_DYN_TDMAB	FIELD_PREP_CONST(TSA_SIGMR_RDM_MASK, 0x3)
+/* CPM SI global mode register (8 bits) */
+#define TSA_CPM1_SIGMR	0x04
+#define TSA_CPM1_SIGMR_ENB			BIT(3)
+#define TSA_CPM1_SIGMR_ENA			BIT(2)
+#define TSA_CPM1_SIGMR_RDM_MASK			GENMASK(1, 0)
+#define   TSA_CPM1_SIGMR_RDM_STATIC_TDMA	FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x0)
+#define   TSA_CPM1_SIGMR_RDM_DYN_TDMA		FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x1)
+#define   TSA_CPM1_SIGMR_RDM_STATIC_TDMAB	FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x2)
+#define   TSA_CPM1_SIGMR_RDM_DYN_TDMAB		FIELD_PREP_CONST(TSA_CPM1_SIGMR_RDM_MASK, 0x3)
 
 /* SI clock route register (32 bits) */
 #define TSA_SICR	0x0C
@@ -656,13 +656,45 @@ static void tsa_init_si_ram(struct tsa *tsa)
 		tsa_write32(tsa->si_ram + i, TSA_CPM1_SIRAM_ENTRY_LAST);
 }
 
+static int tsa_cpm1_setup(struct tsa *tsa)
+{
+	u32 val;
+
+	/* Set SIMODE */
+	val = 0;
+	if (tsa->tdm[0].is_enable)
+		val |= TSA_CPM1_SIMODE_TDMA(tsa->tdm[0].simode_tdm);
+	if (tsa->tdm[1].is_enable)
+		val |= TSA_CPM1_SIMODE_TDMB(tsa->tdm[1].simode_tdm);
+
+	tsa_clrsetbits32(tsa->si_regs + TSA_CPM1_SIMODE,
+			 TSA_CPM1_SIMODE_TDMA(TSA_CPM1_SIMODE_TDM_MASK) |
+			 TSA_CPM1_SIMODE_TDMB(TSA_CPM1_SIMODE_TDM_MASK),
+			 val);
+
+	/* Set SIGMR */
+	val = (tsa->tdms == BIT(TSA_TDMA)) ?
+		TSA_CPM1_SIGMR_RDM_STATIC_TDMA : TSA_CPM1_SIGMR_RDM_STATIC_TDMAB;
+	if (tsa->tdms & BIT(TSA_TDMA))
+		val |= TSA_CPM1_SIGMR_ENA;
+	if (tsa->tdms & BIT(TSA_TDMB))
+		val |= TSA_CPM1_SIGMR_ENB;
+	tsa_write8(tsa->si_regs + TSA_CPM1_SIGMR, val);
+
+	return 0;
+}
+
+static int tsa_setup(struct tsa *tsa)
+{
+	return tsa_cpm1_setup(tsa);
+}
+
 static int tsa_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct resource *res;
 	struct tsa *tsa;
 	unsigned int i;
-	u32 val;
 	int ret;
 
 	tsa = devm_kzalloc(&pdev->dev, sizeof(*tsa), GFP_KERNEL);
@@ -696,26 +728,9 @@ static int tsa_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	/* Set SIMODE */
-	val = 0;
-	if (tsa->tdm[0].is_enable)
-		val |= TSA_SIMODE_TDMA(tsa->tdm[0].simode_tdm);
-	if (tsa->tdm[1].is_enable)
-		val |= TSA_SIMODE_TDMB(tsa->tdm[1].simode_tdm);
-
-	tsa_clrsetbits32(tsa->si_regs + TSA_SIMODE,
-			 TSA_SIMODE_TDMA(TSA_SIMODE_TDM_MASK) |
-			 TSA_SIMODE_TDMB(TSA_SIMODE_TDM_MASK),
-			 val);
-
-	/* Set SIGMR */
-	val = (tsa->tdms == BIT(TSA_TDMA)) ?
-		TSA_SIGMR_RDM_STATIC_TDMA : TSA_SIGMR_RDM_STATIC_TDMAB;
-	if (tsa->tdms & BIT(TSA_TDMA))
-		val |= TSA_SIGMR_ENA;
-	if (tsa->tdms & BIT(TSA_TDMB))
-		val |= TSA_SIGMR_ENB;
-	tsa_write8(tsa->si_regs + TSA_SIGMR, val);
+	ret = tsa_setup(tsa);
+	if (ret)
+		return ret;
 
 	platform_set_drvdata(pdev, tsa);