ar71xx: use routerboot_find_tag to find wlan data offset on RB751

[openwrt/openwrt.git] / target / linux / ar71xx / files / arch / mips / ath79 / mach-rb750.c

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c
index 305fa2f87a7537b3a216b778c119ea6500ab9986..bee8bdf9c2e71e8a445adbe8e35d805454d1cf1b 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c
@@ -15,6 +15,7 @@
 #include <linux/phy.h>
 #include <linux/ar8216_platform.h>
 #include <linux/rle.h>
+#include <linux/routerboot.h>
 
 #include <asm/mach-ath79/ar71xx_regs.h>
 #include <asm/mach-ath79/ath79.h>
@@ -26,6 +27,7 @@
 #include "dev-usb.h"
 #include "dev-eth.h"
 #include "machtypes.h"
+#include "routerboot.h"
 
 static struct rb750_led_data rb750_leds[] = {
        {
@@ -277,15 +279,16 @@ static void __init rb750gr3_setup(void)
 MIPS_MACHINE(ATH79_MACH_RB_750G_R3, "750Gr3", "MikroTik RouterBOARD 750GL",
             rb750gr3_setup);
 
-#define RB751_HARDCONFIG 0x1f00b000
+#define RB751_HARDCONFIG       0x1f00b000
+#define RB751_HARDCONFIG_SIZE  0x1000
 #define RB751_MAC_ADDRESS_OFFSET 0xE80
-#define RB751_CALDATA_OFFSET 0x27C
-#define RB751_CALDATA_SIZE     0xc00
 
 static void __init rb751_wlan_setup(void)
 {
        u8 *hardconfig = (u8 *) KSEG1ADDR(RB751_HARDCONFIG);
        struct ath9k_platform_data *wmac_data;
+       u16 tag_len;
+       u8 *tag;
        int err;
 
        wmac_data = ap9x_pci_get_wmac_data(0);
@@ -296,11 +299,15 @@ static void __init rb751_wlan_setup(void)
 
        ap9x_pci_setup_wmac_led_pin(0, 9);
 
-       err = rle_decode(hardconfig + RB751_CALDATA_OFFSET,
-                        RB751_CALDATA_SIZE,
-                        (unsigned char *) wmac_data->eeprom_data,
-                        sizeof(wmac_data->eeprom_data),
-                        NULL, NULL);
+       err = routerboot_find_tag(hardconfig, RB751_HARDCONFIG_SIZE,
+                                 RB_ID_WLAN_DATA, &tag, &tag_len);
+       if (err) {
+               pr_err("rb75x: no calibration data found\n");
+               return;
+       }
+
+       err = rle_decode(tag, tag_len, (unsigned char *) wmac_data->eeprom_data,
+                        sizeof(wmac_data->eeprom_data), NULL, NULL);
        if (err) {
                pr_err("rb75x: unable to decode wlan eeprom data\n");
                return;