wlcore/wl12xx: move get_pg_ver to the lower driver

The PG version depends on the actual hardware.  This commit moves the
code used to read the PG version to the lower driver, by adding the
get_pg_ver hardware operation.
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wl12xx/main.c

@@ -26,6 +26,7 @@
 
 #include "../wlcore/wlcore.h"
 #include "../wlcore/debug.h"
+#include "../wlcore/io.h"
 
 #include "reg.h"
 
@@ -180,8 +181,21 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 	return ret;
 }
 
+static s8 wl12xx_get_pg_ver(struct wl1271 *wl)
+{
+	u32 die_info;
+
+	if (wl->chip.id == CHIP_ID_1283_PG20)
+		die_info = wl1271_top_reg_read(wl, WL128X_REG_FUSE_DATA_2_1);
+	else
+		die_info = wl1271_top_reg_read(wl, WL127X_REG_FUSE_DATA_2_1);
+
+	return (s8) (die_info & PG_VER_MASK) >> PG_VER_OFFSET;
+}
+
 static struct wlcore_ops wl12xx_ops = {
 	.identify_chip = wl12xx_identify_chip,
+	.get_pg_ver     = wl12xx_get_pg_ver,
 };
 
 static int __devinit wl12xx_probe(struct platform_device *pdev)

drivers/net/wireless/ti/wlcore/io.c

@@ -219,3 +219,4 @@ u16 wl1271_top_reg_read(struct wl1271 *wl, int addr)
 		return 0xffff;
 	}
 }
+EXPORT_SYMBOL_GPL(wl1271_top_reg_read);

drivers/net/wireless/ti/wlcore/main.c

@@ -5066,7 +5066,6 @@ static void wl12xx_get_fuse_mac(struct wl1271 *wl)
 static int wl12xx_get_hw_info(struct wl1271 *wl)
 {
 	int ret;
-	u32 die_info;
 
 	ret = wl12xx_set_power_on(wl);
 	if (ret < 0)
@@ -5077,20 +5076,11 @@ static int wl12xx_get_hw_info(struct wl1271 *wl)
 	wl->fuse_oui_addr = 0;
 	wl->fuse_nic_addr = 0;
 
-	/* TODO: properly detect PG ver and read MAC addr in other families */
-	if (wl->chip.id == CHIP_ID_1283_PG20)
-		die_info = wl1271_top_reg_read(wl, WL128X_REG_FUSE_DATA_2_1);
-	else if (wl->chip.id < CHIP_ID_1283_PG20)
-		die_info = wl1271_top_reg_read(wl, WL127X_REG_FUSE_DATA_2_1);
-	else
-		goto skip_mac;
-
-	wl->hw_pg_ver = (s8) (die_info & PG_VER_MASK) >> PG_VER_OFFSET;
+	wl->hw_pg_ver = wl->ops->get_pg_ver(wl);
 
 	if (wl12xx_mac_in_fuse(wl))
 		wl12xx_get_fuse_mac(wl);
 
-skip_mac:
 	wl1271_power_off(wl);
 out:
 	return ret;

drivers/net/wireless/ti/wlcore/wlcore.h

@@ -29,6 +29,7 @@
 
 struct wlcore_ops {
 	int (*identify_chip)(struct wl1271 *wl);
+	s8 (*get_pg_ver)(struct wl1271 *wl);
 };
 
 enum wlcore_partitions {