eep5416/9285/9287: RAW EEPROM reading support

Add support for RAW EEPROM contents loading if it is requested by the
caller. It assumes complete contents ignoring, including I/O
byteswapping check bypassing.

The change was runtime tested with AR9280 based card (eep5416 format),
and with AR9285 based card (eep9285 aka eeprom 4k format). eep9287
format code was compile tested only, but due to its similarity to
the eep5416 and eep9285 formats, it should work normally too.

Author: rsa9000

eep_5416.c

@@ -46,8 +46,8 @@ static bool eep_5416_load_eeprom(struct atheepmgr *aem, bool raw)
 	uint16_t *buf = aem->eep_buf;
 	int addr;
 
-	/* Check byteswaping requirements */
-	if (!AR5416_TOGGLE_BYTESWAP(5416))
+	/* Check byteswaping requirements for non-RAW operation */
+	if (!raw && !AR5416_TOGGLE_BYTESWAP(5416))
 		return false;
 
 	/* Read to the intermediate buffer */
@@ -59,6 +59,9 @@ static bool eep_5416_load_eeprom(struct atheepmgr *aem, bool raw)
 	}
 	aem->eep_len = addr;
 
+	if (raw)	/* Earlier exit on RAW contents loading */
+		return true;
+
 	/* Copy from buffer to the Init data */
 	for (addr = 0; addr < AR5416_DATA_START_LOC; ++addr)
 		eep_init[addr] = buf[addr];
@@ -602,6 +605,7 @@ static bool eep_5416_update_eeprom(struct atheepmgr *aem, int param,
 const struct eepmap eepmap_5416 = {
 	.name = "5416",
 	.desc = "Default EEPROM map for earlier .11n chips (AR5416/AR9160/AR92xx/etc.)",
+	.features = EEPMAP_F_RAW_EEP,
 	.chip_regs = {
 		.srev = 0x4020,
 	},

eep_9285.c

@@ -46,8 +46,8 @@ static bool eep_9285_load_eeprom(struct atheepmgr *aem, bool raw)
 	uint16_t *buf = aem->eep_buf;
 	int addr;
 
-	/* Check byteswaping requirements */
-	if (!AR5416_TOGGLE_BYTESWAP(9285))
+	/* Check byteswaping requirements for non-RAW operation */
+	if (!raw && !AR5416_TOGGLE_BYTESWAP(9285))
 		return false;
 
 	/* Read to the intermediate buffer */
@@ -59,6 +59,9 @@ static bool eep_9285_load_eeprom(struct atheepmgr *aem, bool raw)
 	}
 	aem->eep_len = addr;
 
+	if (raw)	/* Earlier exit on RAW contents loading */
+		return true;
+
 	/* Copy from buffer to the Init data */
 	for (addr = 0; addr < AR9285_DATA_START_LOC; ++addr)
 		eep_init[addr] = buf[addr];
@@ -330,6 +333,7 @@ static void eep_9285_dump_power_info(struct atheepmgr *aem)
 const struct eepmap eepmap_9285 = {
 	.name = "9285",
 	.desc = "AR9285 chip EEPROM map",
+	.features = EEPMAP_F_RAW_EEP,
 	.chip_regs = {
 		.srev = 0x4020,
 	},

eep_9287.c

@@ -46,8 +46,8 @@ static bool eep_9287_load_eeprom(struct atheepmgr *aem, bool raw)
 	uint16_t *buf = aem->eep_buf;
 	int addr;
 
-	/* Check byteswaping requirements */
-	if (!AR5416_TOGGLE_BYTESWAP(9287))
+	/* Check byteswaping requirements for non-RAW operation */
+	if (!raw && !AR5416_TOGGLE_BYTESWAP(9287))
 		return false;
 
 	/* Read to the intermediate buffer */
@@ -59,6 +59,9 @@ static bool eep_9287_load_eeprom(struct atheepmgr *aem, bool raw)
 	}
 	aem->eep_len = addr;
 
+	if (raw)	/* Earlier exit on RAW contents loading */
+		return true;
+
 	/* Copy from buffer to the Init data */
 	for (addr = 0; addr < AR9287_DATA_START_LOC; ++addr)
 		eep_init[addr] = buf[addr];
@@ -407,6 +410,7 @@ static void eep_9287_dump_power_info(struct atheepmgr *aem)
 const struct eepmap eepmap_9287 = {
 	.name = "9287",
 	.desc = "AR9287 chip EEPROM map",
+	.features = EEPMAP_F_RAW_EEP,
 	.chip_regs = {
 		.srev = 0x4020,
 	},