openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

rt2x00: rt2800lib: use a MCU command for frequency adjustment on USB devices 

According to the Ralink driver, there is an MCU
command which can be used to send the frequency
offset value directly to the USB device without
going through the RFCSR writing sequence.

Based on the DPO_RT5572_LinuxSTA_2.6.0.1_20120629
driver.

Reference:
  RTMPAdjustFrequencyOffset function in common/rt_rf.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gabor Juhos 2013-08-17 14:09:30 +02:00 committed by John W. Linville
parent 6af1bdccab
commit 76773f301f
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/rt2x00/rt2800.h
View File

@ -2794,6 +2794,7 @@ enum rt2800_eeprom_word {
#define MCU_RADAR 0x60
#define MCU_BOOT_SIGNAL 0x72
#define MCU_ANT_SELECT 0X73
#define MCU_FREQ_OFFSET 0x74
#define MCU_BBP_SIGNAL 0x80
#define MCU_POWER_SAVE 0x83
#define MCU_BAND_SELECT 0x91

6
drivers/net/wireless/rt2x00/rt2800lib.c
View File

@ -2509,7 +2509,11 @@ static void rt2800_adjust_freq_offset(struct rt2x00_dev *rt2x00dev)
if (rfcsr == prev_rfcsr)
return;
rt2800_rfcsr_write(rt2x00dev, 17, rfcsr);
if (rt2x00_is_usb(rt2x00dev))
rt2800_mcu_request(rt2x00dev, MCU_FREQ_OFFSET, 0xff,
freq_offset, prev_rfcsr);
else
rt2800_rfcsr_write(rt2x00dev, 17, rfcsr);
}
static void rt2800_config_channel_rf3290(struct rt2x00_dev *rt2x00dev,