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ar71xx: Fix WD My Net N600 weak signal issue

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The LNAs need to be enabled by setting their respective GPIO to high even
though the original firmware's setting sets them to low on initialization.

Obviously the LNAs are then later initialized by the driver on the OEM
firmware. Without this fix the device is mostly "deaf".

Signed-off-by: Felix Kaechele <heffer@fedoraproject.org>
Tested-by: Steven Haigh <netwiz@crc.id.au>
Patchwork: http://patchwork.openwrt.org/patch/4689/
[juhosg:
  - remove the GPIO LED changes, the My Net N600 has no yellow LEDs at all,
  - change subject and update the commit message]
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 39214
This commit is contained in:
Gabor Juhos 2014-01-10 09:07:12 +00:00
parent 01727717f7
commit 32aef686f7
1 changed files with 15 additions and 0 deletions
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15
target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n600.c
View file

@ -42,6 +42,9 @@
#define MYNET_N600_GPIO_BTN_RESET 16 #define MYNET_N600_GPIO_BTN_RESET 16
#define MYNET_N600_GPIO_BTN_WPS 17 #define MYNET_N600_GPIO_BTN_WPS 17
#define MYNET_N600_GPIO_EXTERNAL_LNA0 14
#define MYNET_N600_GPIO_EXTERNAL_LNA1 15
#define MYNET_N600_KEYS_POLL_INTERVAL 20 /* msecs */ #define MYNET_N600_KEYS_POLL_INTERVAL 20 /* msecs */
#define MYNET_N600_KEYS_DEBOUNCE_INTERVAL (3 * MYNET_N600_KEYS_POLL_INTERVAL) #define MYNET_N600_KEYS_DEBOUNCE_INTERVAL (3 * MYNET_N600_KEYS_POLL_INTERVAL)
@ -152,6 +155,18 @@ static void __init mynet_n600_setup(void)
ARRAY_SIZE(mynet_n600_gpio_keys), ARRAY_SIZE(mynet_n600_gpio_keys),
mynet_n600_gpio_keys); mynet_n600_gpio_keys);
/*
* Control signal for external LNAs 0 and 1
* Taken from GPL bootloader source:
* board/ar7240/db12x/alpha_gpio.c
*/
gpio_request_one(MYNET_N600_GPIO_EXTERNAL_LNA0,
GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
"External LNA0");
gpio_request_one(MYNET_N600_GPIO_EXTERNAL_LNA1,
GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
"External LNA1");
mynet_n600_get_mac("wlan24mac=", tmpmac); mynet_n600_get_mac("wlan24mac=", tmpmac);
ath79_register_wmac(art + MYNET_N600_WMAC_CALDATA_OFFSET, tmpmac); ath79_register_wmac(art + MYNET_N600_WMAC_CALDATA_OFFSET, tmpmac);