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-rw-r--r--package/madwifi/patches/354-lantiq_eeprom.patch95
1 files changed, 95 insertions, 0 deletions
diff --git a/package/madwifi/patches/354-lantiq_eeprom.patch b/package/madwifi/patches/354-lantiq_eeprom.patch
new file mode 100644
index 0000000000..59036b1b4b
--- /dev/null
+++ b/package/madwifi/patches/354-lantiq_eeprom.patch
@@ -0,0 +1,95 @@
+--- a/ath_hal/ah_os.c
++++ b/ath_hal/ah_os.c
+@@ -343,6 +343,46 @@ EXPORT_SYMBOL(ath_hal_func);
+ * NB: see the comments in ah_osdep.h about byte-swapping register
+ * reads and writes to understand what's going on below.
+ */
++
++#ifdef CONFIG_LANTIQ
++extern int lantiq_emulate_madwifi_eep;
++extern unsigned long long lantiq_madwifi_eep_addr;
++#define EEPROM_EMULATION 1
++#endif
++
++#ifdef EEPROM_EMULATION
++static int ath_hal_eeprom(struct ath_hal *ah, unsigned long addr, int val, int write)
++{
++ static int addrsel = 0;
++ static int rc = 0;
++
++ if (write) {
++ if(addr == 0x6000) {
++ addrsel = val * 2;
++ rc = 0;
++ }
++ } else {
++ switch(addr)
++ {
++ case 0x600c:
++ if(rc++ < 2)
++ val = 0x00000000;
++ else
++ val = 0x00000002;
++ break;
++ case 0x6004:
++ val = cpu_to_le16(__raw_readw((u16 *) KSEG1ADDR(lantiq_madwifi_eep_addr + addrsel)));
++ /* this forces the regdomain to 0x00 (worldwide), as the original setting
++ * causes issues with the HAL */
++ if (addrsel == 0x17e)
++ val = 0;
++ break;
++ }
++ }
++ return val;
++}
++#endif
++
+ void __ahdecl
+ ath_hal_reg_write(struct ath_hal *ah, u_int reg, u_int32_t val)
+ {
+@@ -351,20 +391,33 @@ ath_hal_reg_write(struct ath_hal *ah, u_
+ ath_hal_printf(ah, "%s: WRITE 0x%x <= 0x%x\n",
+ (ath_hal_func ?: "unknown"), reg, val);
+ #endif
+- _OS_REG_WRITE(ah, reg, val);
++#ifdef EEPROM_EMULATION
++ if((reg >= 0x6000) && (reg <= 0x6010) && lantiq_emulate_madwifi_eep)
++ {
++ val = ath_hal_eeprom(ah, reg, val, 1);
++ } else
++#endif
++ _OS_REG_WRITE(ah, reg, val);
+ }
+ EXPORT_SYMBOL(ath_hal_reg_write);
+
++
+ /* This should only be called while holding the lock, sc->sc_hal_lock. */
+ u_int32_t __ahdecl
+ ath_hal_reg_read(struct ath_hal *ah, u_int reg)
+ {
+- u_int32_t val;
++ u_int32_t val;
++#ifdef EEPROM_EMULATION
++ if((reg >= 0x6000) && (reg <= 0x6010) && lantiq_emulate_madwifi_eep)
++ {
++ val = ath_hal_eeprom(ah, reg, 0, 0);
++ } else
++#endif
++ val = _OS_REG_READ(ah, reg);
+
+- val = _OS_REG_READ(ah, reg);
+ #ifdef AH_DEBUG
+ if (ath_hal_debug > 1)
+- ath_hal_printf(ah, "%s: READ 0x%x => 0x%x\n",
++ ath_hal_printf(ah, "%s: READ 0x%x => 0x%x\n",
+ (ath_hal_func ?: "unknown"), reg, val);
+ #endif
+ return val;
+@@ -581,7 +634,6 @@ init_ath_hal(void)
+ {
+ const char *sep;
+ int i;
+-
+ printk(KERN_INFO "%s: %s (", dev_info, ath_hal_version);
+ sep = "";
+ for (i = 0; ath_hal_buildopts[i] != NULL; i++) {