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rt2x00: Implement Powersaving

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Listen to IEEE80211_CONF_PS to determine if the device
should drop into powersaving mode. This feature depends
on the dynamic power save functionality in mac80211.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn
2008-12-20 10:52:42 +01:00
committed by John W. Linville
parent 3ebbbb56a1
commit 7d7f19ccb7
6 changed files with 174 additions and 7 deletions
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40
drivers/net/wireless/rt2x00/rt73usb.c
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@@ -844,6 +844,44 @@ static void rt73usb_config_duration(struct rt2x00_dev *rt2x00dev,
rt2x00usb_register_write(rt2x00dev, TXRX_CSR9, reg);
}
static void rt73usb_config_ps(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf)
{
enum dev_state state =
(libconf->conf->flags & IEEE80211_CONF_PS) ?
STATE_SLEEP : STATE_AWAKE;
u32 reg;
if (state == STATE_SLEEP) {
rt2x00usb_register_read(rt2x00dev, MAC_CSR11, &reg);
rt2x00_set_field32(&reg, MAC_CSR11_DELAY_AFTER_TBCN,
libconf->conf->beacon_int - 10);
rt2x00_set_field32(&reg, MAC_CSR11_TBCN_BEFORE_WAKEUP,
libconf->conf->listen_interval - 1);
rt2x00_set_field32(&reg, MAC_CSR11_WAKEUP_LATENCY, 5);
/* We must first disable autowake before it can be enabled */
rt2x00_set_field32(&reg, MAC_CSR11_AUTOWAKE, 0);
rt2x00usb_register_write(rt2x00dev, MAC_CSR11, reg);
rt2x00_set_field32(&reg, MAC_CSR11_AUTOWAKE, 1);
rt2x00usb_register_write(rt2x00dev, MAC_CSR11, reg);
rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0,
USB_MODE_SLEEP, REGISTER_TIMEOUT);
} else {
rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0,
USB_MODE_WAKEUP, REGISTER_TIMEOUT);
rt2x00usb_register_read(rt2x00dev, MAC_CSR11, &reg);
rt2x00_set_field32(&reg, MAC_CSR11_DELAY_AFTER_TBCN, 0);
rt2x00_set_field32(&reg, MAC_CSR11_TBCN_BEFORE_WAKEUP, 0);
rt2x00_set_field32(&reg, MAC_CSR11_AUTOWAKE, 0);
rt2x00_set_field32(&reg, MAC_CSR11_WAKEUP_LATENCY, 0);
rt2x00usb_register_write(rt2x00dev, MAC_CSR11, reg);
}
}
static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
const unsigned int flags)
@@ -861,6 +899,8 @@ static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
rt73usb_config_retry_limit(rt2x00dev, libconf);
if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL)
rt73usb_config_duration(rt2x00dev, libconf);
if (flags & IEEE80211_CONF_CHANGE_PS)
rt73usb_config_ps(rt2x00dev, libconf);
}
/*