2012-07-18 08:39:18

by Matt Chen

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

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

Signed-off-by: Chen, Chien-Chia <[email protected]>

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index e76f03c..1715776 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -400,6 +400,13 @@ 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,
@@ -5152,6 +5159,65 @@ int rt2800_get_survey(struct ieee80211_hw *hw, int idx,
}
EXPORT_SYMBOL_GPL(rt2800_get_survey);

+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) == 1))
+ 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) == 1) &&
+ (rt2x00_get_field32(reg, XTAL_RDY) == 1))
+ 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;
+}
+EXPORT_SYMBOL_GPL(rt2800_enable_wlan_rt3290);
+
MODULE_AUTHOR(DRV_PROJECT ", Bartlomiej Zolnierkiewicz");
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2800 library");
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.h b/drivers/net/wireless/rt2x00/rt2800lib.h
index 18a0b67..12d6eeb 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/rt2x00/rt2800lib.h
@@ -209,5 +209,5 @@ int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
int rt2800_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey);
void rt2800_disable_wpdma(struct rt2x00_dev *rt2x00dev);
-
+int rt2800_enable_wlan_rt3290(struct rt2x00_dev *rt2x00dev);
#endif /* RT2800LIB_H */
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 235376e..135c2a2 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -980,6 +980,7 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
return rt2800_validate_eeprom(rt2x00dev);
}

+#if 0
static int rt2800_enable_wlan_rt3290(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
@@ -1040,6 +1041,8 @@ static int rt2800_enable_wlan_rt3290(struct rt2x00_dev *rt2x00dev)

return 0;
}
+
+#endif
static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;