MIPS: ath79: add WMAC registration code for the QCA955X SoCs

The SoC has a built-in wireless MAC. Register a platform
device for that to make it usable with the ath9k driver.

Cc: Rodriguez, Luis <rodrigue@qca.qualcomm.com>
Cc: Giori, Kathy <kgiori@qca.qualcomm.com>
Cc: QCA Linux Team <qca-linux-team@qca.qualcomm.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4956/
Signed-off-by: John Crispin <blogic@openwrt.org>

arch/mips/ath79/Kconfig

@@ -108,7 +108,7 @@ config ATH79_DEV_USB
 	def_bool n
 
 config ATH79_DEV_WMAC
-	depends on (SOC_AR913X || SOC_AR933X || SOC_AR934X)
+	depends on (SOC_AR913X || SOC_AR933X || SOC_AR934X || SOC_QCA955X)
 	def_bool n
 
 endif

arch/mips/ath79/dev-wmac.c

@@ -116,6 +116,24 @@ static void ar934x_wmac_setup(void)
 		ath79_wmac_data.is_clk_25mhz = true;
 }
 
+static void qca955x_wmac_setup(void)
+{
+	u32 t;
+
+	ath79_wmac_device.name = "qca955x_wmac";
+
+	ath79_wmac_resources[0].start = QCA955X_WMAC_BASE;
+	ath79_wmac_resources[0].end = QCA955X_WMAC_BASE + QCA955X_WMAC_SIZE - 1;
+	ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
+	ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
+
+	t = ath79_reset_rr(QCA955X_RESET_REG_BOOTSTRAP);
+	if (t & QCA955X_BOOTSTRAP_REF_CLK_40)
+		ath79_wmac_data.is_clk_25mhz = false;
+	else
+		ath79_wmac_data.is_clk_25mhz = true;
+}
+
 void __init ath79_register_wmac(u8 *cal_data)
 {
 	if (soc_is_ar913x())
@@ -124,6 +142,8 @@ void __init ath79_register_wmac(u8 *cal_data)
 		ar933x_wmac_setup();
 	else if (soc_is_ar934x())
 		ar934x_wmac_setup();
+	else if (soc_is_qca955x())
+		qca955x_wmac_setup();
 	else
 		BUG();
 

arch/mips/include/asm/mach-ath79/ar71xx_regs.h

@@ -94,6 +94,9 @@
 #define AR934X_SRIF_BASE	(AR71XX_APB_BASE + 0x00116000)
 #define AR934X_SRIF_SIZE	0x1000
 
+#define QCA955X_WMAC_BASE	(AR71XX_APB_BASE + 0x00100000)
+#define QCA955X_WMAC_SIZE	0x20000
+
 /*
  * DDR_CTRL block
  */