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Message-Id: <20071121060735.0D7E2DDDF7@ozlabs.org>
Date: Wed, 21 Nov 2007 17:06:44 +1100
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: <jgarzik@...ox.com>
CC: <netdev@...r.kernel.org>, <linuxppc-dev@...abs.org>,
Josh Boyer <jwboyer@...ux.vnet.ibm.com>
Subject: [PATCH 6/8] ibm_newemac: Cleanup/Fix RGMII MDIO support detection
More than just "AXON" version of EMAC RGMII supports MDIO, so replace
the current test with a generic property in the device-tree that
indicates such support.
Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Acked-by: Stefan Roese <sr@...x.de>
---
arch/powerpc/boot/dts/sequoia.dts | 1 +
drivers/net/ibm_newemac/rgmii.c | 20 +++++++++++---------
drivers/net/ibm_newemac/rgmii.h | 5 +++--
3 files changed, 15 insertions(+), 11 deletions(-)
Index: linux-work/drivers/net/ibm_newemac/rgmii.c
===================================================================
--- linux-work.orig/drivers/net/ibm_newemac/rgmii.c 2007-11-12 10:55:54.000000000 +1100
+++ linux-work/drivers/net/ibm_newemac/rgmii.c 2007-11-12 10:56:56.000000000 +1100
@@ -140,7 +140,7 @@ void rgmii_get_mdio(struct of_device *of
RGMII_DBG2(dev, "get_mdio(%d)" NL, input);
- if (dev->type != RGMII_AXON)
+ if (!(dev->flags & EMAC_RGMII_FLAG_HAS_MDIO))
return;
mutex_lock(&dev->lock);
@@ -161,7 +161,7 @@ void rgmii_put_mdio(struct of_device *of
RGMII_DBG2(dev, "put_mdio(%d)" NL, input);
- if (dev->type != RGMII_AXON)
+ if (!(dev->flags & EMAC_RGMII_FLAG_HAS_MDIO))
return;
fer = in_be32(&p->fer);
@@ -250,11 +250,13 @@ static int __devinit rgmii_probe(struct
goto err_free;
}
- /* Check for RGMII type */
+ /* Check for RGMII flags */
+ if (of_get_property(ofdev->node, "has-mdio", NULL))
+ dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
+
+ /* CAB lacks the right properties, fix this up */
if (of_device_is_compatible(ofdev->node, "ibm,rgmii-axon"))
- dev->type = RGMII_AXON;
- else
- dev->type = RGMII_STANDARD;
+ dev->flags |= EMAC_RGMII_FLAG_HAS_MDIO;
DBG2(dev, " Boot FER = 0x%08x, SSR = 0x%08x\n",
in_be32(&dev->base->fer), in_be32(&dev->base->ssr));
@@ -263,9 +265,9 @@ static int __devinit rgmii_probe(struct
out_be32(&dev->base->fer, 0);
printk(KERN_INFO
- "RGMII %s %s initialized\n",
- dev->type == RGMII_STANDARD ? "standard" : "axon",
- ofdev->node->full_name);
+ "RGMII %s initialized with%s MDIO support\n",
+ ofdev->node->full_name,
+ (dev->flags & EMAC_RGMII_FLAG_HAS_MDIO) ? "" : "out");
wmb();
dev_set_drvdata(&ofdev->dev, dev);
Index: linux-work/drivers/net/ibm_newemac/rgmii.h
===================================================================
--- linux-work.orig/drivers/net/ibm_newemac/rgmii.h 2007-11-12 10:55:54.000000000 +1100
+++ linux-work/drivers/net/ibm_newemac/rgmii.h 2007-11-12 10:56:56.000000000 +1100
@@ -35,8 +35,9 @@ struct rgmii_regs {
struct rgmii_instance {
struct rgmii_regs __iomem *base;
- /* Type of RGMII bridge */
- int type;
+ /* RGMII bridge flags */
+ int flags;
+#define EMAC_RGMII_FLAG_HAS_MDIO 0x00000001
/* Only one EMAC whacks us at a time */
struct mutex lock;
Index: linux-work/arch/powerpc/boot/dts/sequoia.dts
===================================================================
--- linux-work.orig/arch/powerpc/boot/dts/sequoia.dts 2007-11-12 10:58:38.000000000 +1100
+++ linux-work/arch/powerpc/boot/dts/sequoia.dts 2007-11-12 10:58:47.000000000 +1100
@@ -245,6 +245,7 @@
device_type = "rgmii-interface";
compatible = "ibm,rgmii-440epx", "ibm,rgmii";
reg = <ef601000 8>;
+ has-mdio;
};
EMAC0: ethernet@...00e00 {
-
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