imx: ventana: split read_eeprom into standalone file

Split the read_eeprom function out so that it can be shared (ie with SPL)

Cc: Stefan Roese <sr@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Andy Ng <andreas2025@gmail.com>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Tapani Utriainen <tapani@technexion.com>
Cc: Tom Rini <trini@ti.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

1 files changed, 1 insertions, 88 deletions

diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index 031367d97a..a39374db1f 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -84,15 +84,6 @@ DECLARE_GLOBAL_DATA_PTR;
  */
 static struct ventana_board_info ventana_info;
 
-enum {
-	GW54proto, /* original GW5400-A prototype */
-	GW51xx,
-	GW52xx,
-	GW53xx,
-	GW54xx,
-	GW_UNKNOWN,
-};
-
 int board_type;
 
 /* UART1: Function varies per baseboard */
@@ -499,84 +490,6 @@ static void setup_display(void)
 }
 #endif /* CONFIG_VIDEO_IPUV3 */
 
-/* read ventana EEPROM, check for validity, and return baseboard type */
-static int
-read_eeprom(void)
-{
-	int i;
-	int chksum;
-	char baseboard;
-	int type;
-	struct ventana_board_info *info = &ventana_info;
-	unsigned char *buf = (unsigned char *)&ventana_info;
-
-	memset(info, 0, sizeof(ventana_info));
-
-	/*
-	 * On a board with a missing/depleted backup battery for GSC, the
-	 * board may be ready to probe the GSC before its firmware is
-	 * running.  We will wait here indefinately for the GSC/EEPROM.
-	 */
-	while (1) {
-		if (0 == i2c_set_bus_num(I2C_GSC) &&
-		    0 == i2c_probe(GSC_EEPROM_ADDR))
-			break;
-		mdelay(1);
-	}
-
-	/* read eeprom config section */
-	if (gsc_i2c_read(GSC_EEPROM_ADDR, 0x00, 1, buf, sizeof(ventana_info))) {
-		puts("EEPROM: Failed to read EEPROM\n");
-		info->model[0] = 0;
-		return GW_UNKNOWN;
-	}
-
-	/* sanity checks */
-	if (info->model[0] != 'G' || info->model[1] != 'W') {
-		puts("EEPROM: Invalid Model in EEPROM\n");
-		info->model[0] = 0;
-		return GW_UNKNOWN;
-	}
-
-	/* validate checksum */
-	for (chksum = 0, i = 0; i < sizeof(*info)-2; i++)
-		chksum += buf[i];
-	if ((info->chksum[0] != chksum>>8) ||
-	    (info->chksum[1] != (chksum&0xff))) {
-		puts("EEPROM: Failed EEPROM checksum\n");
-		info->model[0] = 0;
-		return GW_UNKNOWN;
-	}
-
-	/* original GW5400-A prototype */
-	baseboard = info->model[3];
-	if (strncasecmp((const char *)info->model, "GW5400-A", 8) == 0)
-		baseboard = '0';
-
-	switch (baseboard) {
-	case '0': /* original GW5400-A prototype */
-		type = GW54proto;
-		break;
-	case '1':
-		type = GW51xx;
-		break;
-	case '2':
-		type = GW52xx;
-		break;
-	case '3':
-		type = GW53xx;
-		break;
-	case '4':
-		type = GW54xx;
-		break;
-	default:
-		printf("EEPROM: Unknown model in EEPROM: %s\n", info->model);
-		type = GW_UNKNOWN;
-		break;
-	}
-	return type;
-}
-
 /*
  * Baseboard specific GPIO
  */
@@ -1114,7 +1027,7 @@ int board_init(void)
 	setup_sata();
 #endif
 	/* read Gateworks EEPROM into global struct (used later) */
-	board_type = read_eeprom();
+	board_type = read_eeprom(I2C_GSC, &ventana_info);
 
 	/* board-specifc GPIO iomux */
 	if (board_type < GW_UNKNOWN) {