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mt7603: load efuse data if present (currently unused)

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Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2016-02-22 09:11:44 +01:00
parent 02b9245b9e
commit 404177d6cf
2 changed files with 80 additions and 1 deletions
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mt7603_eeprom.c
+61 -1
View File
@@ -14,6 +14,66 @@
#include "mt7603.h"
#include "mt7603_eeprom.h"
static int
mt7603_efuse_read(struct mt7603_dev *dev, u32 base, u16 addr, u8 *data)
{
u32 val;
int i;
val = mt76_rr(dev, base + MT_EFUSE_CTRL);
val &= ~(MT_EFUSE_CTRL_AIN |
MT_EFUSE_CTRL_MODE);
val |= MT76_SET(MT_EFUSE_CTRL_AIN, addr & ~0xf);
val |= MT_EFUSE_CTRL_KICK;
mt76_wr(dev, base + MT_EFUSE_CTRL, val);
if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
return -ETIMEDOUT;
udelay(2);
val = mt76_rr(dev, base + MT_EFUSE_CTRL);
if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT ||
WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) {
memset(data, 0xff, 16);
return 0;
}
for (i = 0; i < 4; i++) {
val = mt76_rr(dev, base + MT_EFUSE_RDATA(i));
put_unaligned_le32(val, data + 4 * i);
}
return 0;
}
static int
mt7603_efuse_init(struct mt7603_dev *dev)
{
u32 base = mt7603_reg_map(dev, MT_EFUSE_BASE);
int len = MT7603_EEPROM_SIZE;
void *buf;
int ret, i;
if (mt76_rr(dev, base + MT_EFUSE_BASE_CTRL) & MT_EFUSE_BASE_CTRL_EMPTY)
return 0;
dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL);
dev->mt76.otp.size = len;
if (!dev->mt76.otp.data)
return -ENOMEM;
buf = dev->mt76.otp.data;
for (i = 0; i + 16 <= len; i += 16) {
ret = mt7603_efuse_read(dev, base, i, buf + i);
if (ret)
return ret;
}
return 0;
}
static int
mt7603_eeprom_load(struct mt7603_dev *dev)
{
@@ -23,7 +83,7 @@ mt7603_eeprom_load(struct mt7603_dev *dev)
if (ret < 0)
return ret;
return 0;
return mt7603_efuse_init(dev);
}
int mt7603_eeprom_init(struct mt7603_dev *dev)
mt7603_regs.h
+19
View File
@@ -340,6 +340,25 @@
#define MT_CLIENT_TMAC_INFO_TEMPLATE 0x040
#define MT_EFUSE_BASE 0x81070000
#define MT_EFUSE_BASE_CTRL 0x000
#define MT_EFUSE_BASE_CTRL_EMPTY BIT(30)
#define MT_EFUSE_CTRL 0x008
#define MT_EFUSE_CTRL_AOUT GENMASK(5, 0)
#define MT_EFUSE_CTRL_MODE GENMASK(7, 6)
#define MT_EFUSE_CTRL_LDO_OFF_TIME GENMASK(13, 8)
#define MT_EFUSE_CTRL_LDO_ON_TIME GENMASK(15, 14)
#define MT_EFUSE_CTRL_AIN GENMASK(25, 16)
#define MT_EFUSE_CTRL_VALID BIT(29)
#define MT_EFUSE_CTRL_KICK BIT(30)
#define MT_EFUSE_CTRL_SEL BIT(31)
#define MT_EFUSE_WDATA(_i) (0x010 + ((_i) * 4))
#define MT_EFUSE_RDATA(_i) (0x030 + ((_i) * 4))
#define MT_CLIENT_RXINF 0x068
#define MT_CLIENT_RXINF_RXSH_GROUPS GENMASK(2, 0)