[rt2x00-users] [PATCH v4] rt2x00 : fix rt3290 resuming failed.

["Chen, Chien-Chia" <machen@suse.com>]

From: Woody Hung <Woody.Hung@mediatek.com>
Date: Tue, 31 Jul 2012 21:53:33 +0800

This patch is going to fix the resuming failed from S3/S4
for rt3290 chip.

Signed-off-by: Woody Hung <Woody.Hung@mediatek.com>
CC-by: Kevin Chou <kevin.chou@mediatek.com>
Signed-off-by: Chen, Chien-Chia <machen@suse.com>
---
 drivers/net/wireless/rt2x00/rt2800lib.c |   68 +++++++++++++++++++++++++++++
 drivers/net/wireless/rt2x00/rt2800pci.c |   71 -------------------------------
 2 files changed, 68 insertions(+), 71 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index e76f03c..7bc4768 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -221,6 +221,67 @@ static void rt2800_rf_write(struct rt2x00_dev *rt2x00dev,
 	mutex_unlock(&rt2x00dev->csr_mutex);
 }
 
+static int rt2800_enable_wlan_rt3290(struct rt2x00_dev *rt2x00dev)
+{
+	u32 reg;
+	int i, count;
+
+	rt2800_register_read(rt2x00dev, WLAN_FUN_CTRL, &reg);
+	if (rt2x00_get_field32(reg, WLAN_EN))
+		return 0;
+
+	rt2x00_set_field32(&reg, WLAN_GPIO_OUT_OE_BIT_ALL, 0xff);
+	rt2x00_set_field32(&reg, FRC_WL_ANT_SET, 1);
+	rt2x00_set_field32(&reg, WLAN_CLK_EN, 0);
+	rt2x00_set_field32(&reg, WLAN_EN, 1);
+	rt2800_register_write(rt2x00dev, WLAN_FUN_CTRL, reg);
+
+	udelay(REGISTER_BUSY_DELAY);
+
+	count = 0;
+	do {
+		/*
+		 * Check PLL_LD & XTAL_RDY.
+		 */
+		for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
+			rt2800_register_read(rt2x00dev, CMB_CTRL, &reg);
+			if (rt2x00_get_field32(reg, PLL_LD) &&
+			    rt2x00_get_field32(reg, XTAL_RDY))
+				break;
+			udelay(REGISTER_BUSY_DELAY);
+		}
+
+		if (i >= REGISTER_BUSY_COUNT) {
+
+			if (count >= 10)
+				return -EIO;
+
+			rt2800_register_write(rt2x00dev, 0x58, 0x018);
+			udelay(REGISTER_BUSY_DELAY);
+			rt2800_register_write(rt2x00dev, 0x58, 0x418);
+			udelay(REGISTER_BUSY_DELAY);
+			rt2800_register_write(rt2x00dev, 0x58, 0x618);
+			udelay(REGISTER_BUSY_DELAY);
+			count++;
+		} else {
+			count = 0;
+		}
+
+		rt2800_register_read(rt2x00dev, WLAN_FUN_CTRL, &reg);
+		rt2x00_set_field32(&reg, PCIE_APP0_CLK_REQ, 0);
+		rt2x00_set_field32(&reg, WLAN_CLK_EN, 1);
+		rt2x00_set_field32(&reg, WLAN_RESET, 1);
+		rt2800_register_write(rt2x00dev, WLAN_FUN_CTRL, reg);
+		udelay(10);
+		rt2x00_set_field32(&reg, WLAN_RESET, 0);
+		rt2800_register_write(rt2x00dev, WLAN_FUN_CTRL, reg);
+		udelay(10);
+		rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, 0x7fffffff);
+	} while (count != 0);
+
+	return 0;
+}
+
 void rt2800_mcu_request(struct rt2x00_dev *rt2x00dev,
 			const u8 command, const u8 token,
 			const u8 arg0, const u8 arg1)
@@ -400,6 +461,13 @@ int rt2800_load_firmware(struct rt2x00_dev *rt2x00dev,
 {
 	unsigned int i;
 	u32 reg;
+	int retval;
+
+	if (rt2x00_rt(rt2x00dev, RT3290)) {
+		retval = rt2800_enable_wlan_rt3290(rt2x00dev);
+		if (retval)
+			return -EBUSY;
+	}
 
 	/*
 	 * If driver doesn't wake up firmware here,
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 235376e..98aa426 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -980,66 +980,6 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 	return rt2800_validate_eeprom(rt2x00dev);
 }
 
-static int rt2800_enable_wlan_rt3290(struct rt2x00_dev *rt2x00dev)
-{
-	u32 reg;
-	int i, count;
-
-	rt2800_register_read(rt2x00dev, WLAN_FUN_CTRL, &reg);
-	if (rt2x00_get_field32(reg, WLAN_EN))
-		return 0;
-
-	rt2x00_set_field32(&reg, WLAN_GPIO_OUT_OE_BIT_ALL, 0xff);
-	rt2x00_set_field32(&reg, FRC_WL_ANT_SET, 1);
-	rt2x00_set_field32(&reg, WLAN_CLK_EN, 0);
-	rt2x00_set_field32(&reg, WLAN_EN, 1);
-	rt2800_register_write(rt2x00dev, WLAN_FUN_CTRL, reg);
-
-	udelay(REGISTER_BUSY_DELAY);
-
-	count = 0;
-	do {
-		/*
-		 * Check PLL_LD & XTAL_RDY.
-		 */
-		for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-			rt2800_register_read(rt2x00dev, CMB_CTRL, &reg);
-			if (rt2x00_get_field32(reg, PLL_LD) &&
-			    rt2x00_get_field32(reg, XTAL_RDY))
-				break;
-			udelay(REGISTER_BUSY_DELAY);
-		}
-
-		if (i >= REGISTER_BUSY_COUNT) {
-
-			if (count >= 10)
-				return -EIO;
-
-			rt2800_register_write(rt2x00dev, 0x58, 0x018);
-			udelay(REGISTER_BUSY_DELAY);
-			rt2800_register_write(rt2x00dev, 0x58, 0x418);
-			udelay(REGISTER_BUSY_DELAY);
-			rt2800_register_write(rt2x00dev, 0x58, 0x618);
-			udelay(REGISTER_BUSY_DELAY);
-			count++;
-		} else {
-			count = 0;
-		}
-
-		rt2800_register_read(rt2x00dev, WLAN_FUN_CTRL, &reg);
-		rt2x00_set_field32(&reg, PCIE_APP0_CLK_REQ, 0);
-		rt2x00_set_field32(&reg, WLAN_CLK_EN, 1);
-		rt2x00_set_field32(&reg, WLAN_RESET, 1);
-		rt2800_register_write(rt2x00dev, WLAN_FUN_CTRL, reg);
-		udelay(10);
-		rt2x00_set_field32(&reg, WLAN_RESET, 0);
-		rt2800_register_write(rt2x00dev, WLAN_FUN_CTRL, reg);
-		udelay(10);
-		rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, 0x7fffffff);
-	} while (count != 0);
-
-	return 0;
-}
 static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 {
 	int retval;
@@ -1063,17 +1003,6 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 		return retval;
 
 	/*
-	 * In probe phase call rt2800_enable_wlan_rt3290 to enable wlan
-	 * clk for rt3290. That avoid the MCU fail in start phase.
-	 */
-	if (rt2x00_rt(rt2x00dev, RT3290)) {
-		retval = rt2800_enable_wlan_rt3290(rt2x00dev);
-
-		if (retval)
-			return retval;
-	}
-
-	/*
 	 * This device has multiple filters for control frames
 	 * and has a separate filter for PS Poll frames.
 	 */
-- 
1.7.7