From 83cac6285d3bc1d10bf8671a2ddf68ca3cc17efa Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Wed, 1 Jun 2011 13:12:30 +0000
Subject: ar71xx: init external_reset for AR933X

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27083 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../files/arch/mips/ar71xx/dev-ar9xxx-wmac.c       | 29 ++++++++++++++++++++++
 .../arch/mips/include/asm/mach-ar71xx/ar71xx.h     |  2 ++
 2 files changed, 31 insertions(+)

(limited to 'target/linux/ar71xx/files/arch/mips')

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/dev-ar9xxx-wmac.c b/target/linux/ar71xx/files/arch/mips/ar71xx/dev-ar9xxx-wmac.c
index d4104726b6..e5cd4d3ff4 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/dev-ar9xxx-wmac.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/dev-ar9xxx-wmac.c
@@ -68,6 +68,31 @@ static int ar933x_r1_get_wmac_revision(void)
 	return ar71xx_soc_rev;
 }
 
+static int ar933x_wmac_reset(void)
+{
+	unsigned retries = 0;
+
+	ar71xx_device_stop(AR933X_RESET_WMAC);
+	ar71xx_device_start(AR933X_RESET_WMAC);
+
+	while (1) {
+		u32 bootstrap;
+
+		bootstrap = ar71xx_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
+		if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
+			return 0;
+
+		if (retries > 20)
+			break;
+
+		udelay(10000);
+		retries++;
+	}
+
+	pr_err("ar93xx: WMAC reset timed out");
+	return -ETIMEDOUT;
+}
+
 static void ar933x_wmac_init(void)
 {
 	ar9xxx_wmac_device.name = "ar933x_wmac";
@@ -78,6 +103,10 @@ static void ar933x_wmac_init(void)
 
 	if (ar71xx_soc_rev == 1)
 		ar9xxx_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
+
+	ar9xxx_wmac_data.external_reset = ar933x_wmac_reset;
+
+	ar933x_wmac_reset();
 }
 
 static void ar934x_wmac_init(void)
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
index a001f89dbc..f78ae16651 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
@@ -609,6 +609,7 @@ void ar71xx_ddr_flush(u32 reg);
 
 #define AR933X_RESET_REG_RESET_MODULE		0x1c
 #define AR933X_RESET_REG_BOOTSTRAP		0xac
+#define AR933X_BOOTSTRAP_EEPBUSY		BIT(4)
 #define AR933X_BOOTSTRAP_REF_CLK_40		BIT(0)
 
 #define AR934X_RESET_REG_RESET_MODULE		0x1c
@@ -672,6 +673,7 @@ void ar71xx_ddr_flush(u32 reg);
 #define AR724X_RESET_USB_PHY		BIT(4)
 #define AR724X_RESET_USBSUS_OVERRIDE	BIT(3)
 
+#define AR933X_RESET_WMAC		BIT(11)
 #define AR933X_RESET_GE1_MDIO		BIT(23)
 #define AR933X_RESET_GE0_MDIO		BIT(22)
 #define AR933X_RESET_GE1_MAC		BIT(13)
-- 
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