generic: add b53 swconfig switch driver

Add swconfig switch driver for Broadcom BCM53XX switch chips. Supports
switches connected through MDIO, SPI or memory mapped registers, and
supports BCM5325, BCM539x, BCM531x5 and the BCM63XX internal switch
chips.

Tested are BCM5325 trough MDIO, BCM53115 through SPI, and BCM6328.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 35305

1 files changed, 53 insertions, 0 deletions

diff --git a/target/linux/generic/files/drivers/net/phy/b53/b53_phy_fixup.c b/target/linux/generic/files/drivers/net/phy/b53/b53_phy_fixup.c
new file mode 100644
index 0000000000..447f30b649
--- /dev/null
+++ b/target/linux/generic/files/drivers/net/phy/b53/b53_phy_fixup.c
@@ -0,0 +1,53 @@
+/*
+ * B53 PHY Fixup call
+ *
+ * Copyright (C) 2013 Jonas Gorski <jogo@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/phy.h>
+
+#define B53_PSEUDO_PHY	0x1e /* Register Access Pseudo PHY */
+
+#define B53_BRCM_OUI_1	0x0143bc00
+#define B53_BRCM_OUI_2	0x03625c00
+
+static int b53_phy_fixup(struct phy_device *dev)
+{
+	u32 phy_id;
+	struct mii_bus *bus = dev->bus;
+
+	if (dev->addr != B53_PSEUDO_PHY)
+		return 0;
+
+	/* read the first port's id */
+	phy_id = mdiobus_read(bus, 0, 2) << 16;
+	phy_id |= mdiobus_read(bus, 0, 3);
+
+	if ((phy_id & 0xfffffc00) == B53_BRCM_OUI_1 ||
+	    (phy_id & 0xfffffc00) == B53_BRCM_OUI_2) {
+		dev->phy_id = phy_id;
+	}
+
+	return 0;
+}
+
+int __init b53_phy_fixup_register(void)
+{
+	return phy_register_fixup_for_id(PHY_ANY_ID, b53_phy_fixup);
+}
+
+subsys_initcall(b53_phy_fixup_register);