commit 30e840346c516ad4e36f710fa485933ccc7afa66
author Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Sun Nov 08 14:39:48 2009 +0100
committer John W. Linville <linville@tuxdriver.com> Wed Nov 11 17:09:16 2009 -0500
tree a8489add516573512e64ebd534c07963e5ba3c05
parent 4116cb483ec148e30f70408ad0600304a5de2a3c

rt2800: add eFuse EEPROM support code to rt2800lib

eFuse EEPROM is used also by USB chips (i.e. RT3070)
so move the needed code from rt2800pci to rt2800lib.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index d7771ea..f207e9f 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1659,6 +1659,49 @@
 }
 EXPORT_SYMBOL_GPL(rt2800_init_rfcsr);
 
+int rt2800_efuse_detect(struct rt2x00_dev *rt2x00dev)
+{
+	u32 reg;
+
+	rt2800_register_read(rt2x00dev, EFUSE_CTRL, &reg);
+
+	return rt2x00_get_field32(reg, EFUSE_CTRL_PRESENT);
+}
+EXPORT_SYMBOL_GPL(rt2800_efuse_detect);
+
+static void rt2800_efuse_read(struct rt2x00_dev *rt2x00dev, unsigned int i)
+{
+	u32 reg;
+
+	rt2800_register_read(rt2x00dev, EFUSE_CTRL, &reg);
+	rt2x00_set_field32(&reg, EFUSE_CTRL_ADDRESS_IN, i);
+	rt2x00_set_field32(&reg, EFUSE_CTRL_MODE, 0);
+	rt2x00_set_field32(&reg, EFUSE_CTRL_KICK, 1);
+	rt2800_register_write(rt2x00dev, EFUSE_CTRL, reg);
+
+	/* Wait until the EEPROM has been loaded */
+	rt2800_regbusy_read(rt2x00dev, EFUSE_CTRL, EFUSE_CTRL_KICK, &reg);
+
+	/* Apparently the data is read from end to start */
+	rt2800_register_read(rt2x00dev, EFUSE_DATA3,
+				(u32 *)&rt2x00dev->eeprom[i]);
+	rt2800_register_read(rt2x00dev, EFUSE_DATA2,
+				(u32 *)&rt2x00dev->eeprom[i + 2]);
+	rt2800_register_read(rt2x00dev, EFUSE_DATA1,
+				(u32 *)&rt2x00dev->eeprom[i + 4]);
+	rt2800_register_read(rt2x00dev, EFUSE_DATA0,
+				(u32 *)&rt2x00dev->eeprom[i + 6]);
+}
+
+void rt2800_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
+{
+	unsigned int i;
+
+	for (i = 0; i < EEPROM_SIZE / sizeof(u16); i += 8)
+		rt2800_efuse_read(rt2x00dev, i);
+}
+EXPORT_SYMBOL_GPL(rt2800_read_eeprom_efuse);
+
 int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev)
 {
 	u16 word;