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ath9k_hw: Offload USB eeprom reading to target

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For USB devices, reading the EEPROM data can be offloaded
to the target. Use multiple register reads to take advantage
of this feature to reduce initialization time.

Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan
2011-01-04 13:17:28 +05:30
committed by John W. Linville
parent 09a525d338
commit 04cf53f465
5 changed files with 123 additions and 29 deletions
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32
drivers/net/wireless/ath/ath9k/eeprom.c
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@@ -89,6 +89,38 @@ bool ath9k_hw_get_lower_upper_index(u8 target, u8 *pList, u16 listSize,
return false;
}
void ath9k_hw_usb_gen_fill_eeprom(struct ath_hw *ah, u16 *eep_data,
int eep_start_loc, int size)
{
int i = 0, j, addr;
u32 addrdata[8];
u32 data[8];
for (addr = 0; addr < size; addr++) {
addrdata[i] = AR5416_EEPROM_OFFSET +
((addr + eep_start_loc) << AR5416_EEPROM_S);
i++;
if (i == 8) {
REG_READ_MULTI(ah, addrdata, data, i);
for (j = 0; j < i; j++) {
*eep_data = data[j];
eep_data++;
}
i = 0;
}
}
if (i != 0) {
REG_READ_MULTI(ah, addrdata, data, i);
for (j = 0; j < i; j++) {
*eep_data = data[j];
eep_data++;
}
}
}
bool ath9k_hw_nvram_read(struct ath_common *common, u32 off, u16 *data)
{
return common->bus_ops->eeprom_read(common, off, data);