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>

3 files changed, 24 insertions, 1 deletions

diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index cffdc8e3b63b..77926e331b17 100644
--- a/arch/mips/ath79/Kconfig
+++ b/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
diff --git a/arch/mips/ath79/dev-wmac.c b/arch/mips/ath79/dev-wmac.c
index d71d745e3109..da190b1b87ce 100644
--- a/arch/mips/ath79/dev-wmac.c
+++ b/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();
 
diff --git a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
index bf50ddfc9d5c..47282120db1e 100644
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/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
  */