From de51b35d506f9f9e8ab7bb5987ed5d50a76bd906 Mon Sep 17 00:00:00 2001 From: Michael Braun Date: Thu, 12 Jun 2014 19:33:36 +0200 Subject: [PATCH] rt2800usb:fix efuse detection The device 057c:8501 (AVM Fritz! WLAN v2 rev. B) currently does not load. One thing observed is that the vendors driver detects EFUSE mode for this device, but rt2800usb does not. This is due to rt2800usb lacking a check for the firmware mode present in the vendors driver, that this patch adopts for rt2800usb. With this patch applied, the 'RF chipset' detection does no longer fail. Signed-off-by: Michael Braun Acked-by: Stanislaw Gruszka Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2800usb.c | 30 ++++++++++++++++++++++++- drivers/net/wireless/rt2x00/rt2x00usb.h | 1 + 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c index a49c3d73ea2c..11583ca3facb 100644 --- a/drivers/net/wireless/rt2x00/rt2800usb.c +++ b/drivers/net/wireless/rt2x00/rt2800usb.c @@ -229,6 +229,27 @@ static enum hrtimer_restart rt2800usb_tx_sta_fifo_timeout(struct hrtimer *timer) /* * Firmware functions */ +static int rt2800usb_autorun_detect(struct rt2x00_dev *rt2x00dev) +{ + __le32 reg; + u32 fw_mode; + + /* cannot use rt2x00usb_register_read here as it uses different + * mode (MULTI_READ vs. DEVICE_MODE) and does not pass the + * magic value USB_MODE_AUTORUN (0x11) to the device, thus the + * returned value would be invalid. + */ + rt2x00usb_vendor_request(rt2x00dev, USB_DEVICE_MODE, + USB_VENDOR_REQUEST_IN, 0, USB_MODE_AUTORUN, + ®, sizeof(reg), REGISTER_TIMEOUT_FIRMWARE); + fw_mode = le32_to_cpu(reg); + + if ((fw_mode & 0x00000003) == 2) + return 1; + + return 0; +} + static char *rt2800usb_get_firmware_name(struct rt2x00_dev *rt2x00dev) { return FIRMWARE_RT2870; @@ -735,11 +756,18 @@ static void rt2800usb_fill_rxdone(struct queue_entry *entry, /* * Device probe functions. */ +static int rt2800usb_efuse_detect(struct rt2x00_dev *rt2x00dev) +{ + if (rt2800usb_autorun_detect(rt2x00dev)) + return 1; + return rt2800_efuse_detect(rt2x00dev); +} + static int rt2800usb_read_eeprom(struct rt2x00_dev *rt2x00dev) { int retval; - if (rt2800_efuse_detect(rt2x00dev)) + if (rt2800usb_efuse_detect(rt2x00dev)) retval = rt2800_read_eeprom_efuse(rt2x00dev); else retval = rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h index e7bcf62347d5..831b65f93feb 100644 --- a/drivers/net/wireless/rt2x00/rt2x00usb.h +++ b/drivers/net/wireless/rt2x00/rt2x00usb.h @@ -93,6 +93,7 @@ enum rt2x00usb_mode_offset { USB_MODE_SLEEP = 7, /* RT73USB */ USB_MODE_FIRMWARE = 8, /* RT73USB */ USB_MODE_WAKEUP = 9, /* RT73USB */ + USB_MODE_AUTORUN = 17, /* RT2800USB */ }; /** -- 2.20.1