Thread (8 messages) 8 messages, 2 authors, 2011-07-06

Re: [PATCH v2 2/3] net: ibm_newemac: convert it to use of_get_phy_mode

From: Grant Likely <hidden>
Date: 2011-07-05 17:38:46
Also in: linux-arm-kernel, netdev

On Tue, Jul 5, 2011 at 9:13 AM, Shawn Guo [off-list ref] wrote:
The patch extends 'enum phy_interface_t' and of_get_phy_mode a little
bit with PHY_INTERFACE_MODE_NA and PHY_INTERFACE_MODE_SMII added,
and then converts ibm_newemac net driver to use of_get_phy_mode
getting phy mode from device tree.

It also resolves the namespace conflict on phy_read/write between
common mdiobus interface and ibm_newemac private one.

Signed-off-by: Shawn Guo <redacted>
Cc: David S. Miller <davem@davemloft.net>
Cc: Grant Likely <redacted>
I'm okay with this, but I'm don't know if it is a good idea to add the
new PHY_INTERFACE_MODE defines (but I cannot think of a reason why
not).  I'll let someone else comment on that.

Acked-by: Grant Likely <redacted>

quoted hunk ↗ jump to hunk
---
 drivers/net/ibm_newemac/core.c |   33 ++++-----------------------------
 drivers/net/ibm_newemac/emac.h |   19 ++++++++++---------
 drivers/net/ibm_newemac/phy.c  |    7 +++++--
 drivers/of/of_net.c            |    2 ++
 include/linux/phy.h            |    4 +++-
 5 files changed, 24 insertions(+), 41 deletions(-)
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 725399e..70cb7d8 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -39,6 +39,7 @@
 #include <linux/bitops.h>
 #include <linux/workqueue.h>
 #include <linux/of.h>
+#include <linux/of_net.h>
 #include <linux/slab.h>

 #include <asm/processor.h>
@@ -2506,18 +2507,6 @@ static int __devinit emac_init_config(struct emac_instance *dev)
 {
       struct device_node *np = dev->ofdev->dev.of_node;
       const void *p;
-       unsigned int plen;
-       const char *pm, *phy_modes[] = {
-               [PHY_MODE_NA] = "",
-               [PHY_MODE_MII] = "mii",
-               [PHY_MODE_RMII] = "rmii",
-               [PHY_MODE_SMII] = "smii",
-               [PHY_MODE_RGMII] = "rgmii",
-               [PHY_MODE_TBI] = "tbi",
-               [PHY_MODE_GMII] = "gmii",
-               [PHY_MODE_RTBI] = "rtbi",
-               [PHY_MODE_SGMII] = "sgmii",
-       };

       /* Read config from device-tree */
       if (emac_read_uint_prop(np, "mal-device", &dev->mal_ph, 1))
@@ -2566,23 +2555,9 @@ static int __devinit emac_init_config(struct emac_instance *dev)
               dev->mal_burst_size = 256;

       /* PHY mode needs some decoding */
-       dev->phy_mode = PHY_MODE_NA;
-       pm = of_get_property(np, "phy-mode", &plen);
-       if (pm != NULL) {
-               int i;
-               for (i = 0; i < ARRAY_SIZE(phy_modes); i++)
-                       if (!strcasecmp(pm, phy_modes[i])) {
-                               dev->phy_mode = i;
-                               break;
-                       }
-       }
-
-       /* Backward compat with non-final DT */
-       if (dev->phy_mode == PHY_MODE_NA && pm != NULL && plen == 4) {
-               u32 nmode = *(const u32 *)pm;
-               if (nmode > PHY_MODE_NA && nmode <= PHY_MODE_SGMII)
-                       dev->phy_mode = nmode;
-       }
+       dev->phy_mode = of_get_phy_mode(np);
+       if (dev->phy_mode < 0)
+               dev->phy_mode = PHY_MODE_NA;

       /* Check EMAC version */
       if (of_device_is_compatible(np, "ibm,emac4sync")) {
diff --git a/drivers/net/ibm_newemac/emac.h b/drivers/net/ibm_newemac/emac.h
index 8a61b597..1568278 100644
--- a/drivers/net/ibm_newemac/emac.h
+++ b/drivers/net/ibm_newemac/emac.h
@@ -26,6 +26,7 @@
 #define __IBM_NEWEMAC_H

 #include <linux/types.h>
+#include <linux/phy.h>

 /* EMAC registers                      Write Access rules */
 struct emac_regs {
@@ -106,15 +107,15 @@ struct emac_regs {
 /*
 * PHY mode settings (EMAC <-> ZMII/RGMII bridge <-> PHY)
 */
-#define PHY_MODE_NA    0
-#define PHY_MODE_MII   1
-#define PHY_MODE_RMII  2
-#define PHY_MODE_SMII  3
-#define PHY_MODE_RGMII 4
-#define PHY_MODE_TBI   5
-#define PHY_MODE_GMII  6
-#define PHY_MODE_RTBI  7
-#define PHY_MODE_SGMII 8
+#define PHY_MODE_NA    PHY_INTERFACE_MODE_NA
+#define PHY_MODE_MII   PHY_INTERFACE_MODE_MII
+#define PHY_MODE_RMII  PHY_INTERFACE_MODE_RMII
+#define PHY_MODE_SMII  PHY_INTERFACE_MODE_SMII
+#define PHY_MODE_RGMII PHY_INTERFACE_MODE_RGMII
+#define PHY_MODE_TBI   PHY_INTERFACE_MODE_TBI
+#define PHY_MODE_GMII  PHY_INTERFACE_MODE_GMII
+#define PHY_MODE_RTBI  PHY_INTERFACE_MODE_RTBI
+#define PHY_MODE_SGMII PHY_INTERFACE_MODE_SGMII

 /* EMACx_MR0 */
 #define EMAC_MR0_RXI                   0x80000000
diff --git a/drivers/net/ibm_newemac/phy.c b/drivers/net/ibm_newemac/phy.c
index ac9d964..ab4e596 100644
--- a/drivers/net/ibm_newemac/phy.c
+++ b/drivers/net/ibm_newemac/phy.c
@@ -28,12 +28,15 @@
 #include "emac.h"
 #include "phy.h"

-static inline int phy_read(struct mii_phy *phy, int reg)
+#define phy_read _phy_read
+#define phy_write _phy_write
+
+static inline int _phy_read(struct mii_phy *phy, int reg)
 {
       return phy->mdio_read(phy->dev, phy->address, reg);
 }

-static inline void phy_write(struct mii_phy *phy, int reg, int val)
+static inline void _phy_write(struct mii_phy *phy, int reg, int val)
 {
       phy->mdio_write(phy->dev, phy->address, reg, val);
 }
diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c
index cc117db..bb18471 100644
--- a/drivers/of/of_net.c
+++ b/drivers/of/of_net.c
@@ -16,6 +16,7 @@
 * device driver can get phy interface from device tree.
 */
 static const char *phy_modes[] = {
+       [PHY_INTERFACE_MODE_NA]         = "",
       [PHY_INTERFACE_MODE_MII]        = "mii",
       [PHY_INTERFACE_MODE_GMII]       = "gmii",
       [PHY_INTERFACE_MODE_SGMII]      = "sgmii",
@@ -26,6 +27,7 @@ static const char *phy_modes[] = {
       [PHY_INTERFACE_MODE_RGMII_RXID] = "rgmii-rxid",
       [PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid",
       [PHY_INTERFACE_MODE_RTBI]       = "rtbi",
+       [PHY_INTERFACE_MODE_SMII]       = "smii",
 };

 /**
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 7da5fa8..1622081 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -53,6 +53,7 @@
 /* Interface Mode definitions */
 typedef enum {
+       PHY_INTERFACE_MODE_NA,
       PHY_INTERFACE_MODE_MII,
       PHY_INTERFACE_MODE_GMII,
       PHY_INTERFACE_MODE_SGMII,
@@ -62,7 +63,8 @@ typedef enum {
       PHY_INTERFACE_MODE_RGMII_ID,
       PHY_INTERFACE_MODE_RGMII_RXID,
       PHY_INTERFACE_MODE_RGMII_TXID,
-       PHY_INTERFACE_MODE_RTBI
+       PHY_INTERFACE_MODE_RTBI,
+       PHY_INTERFACE_MODE_SMII,
 } phy_interface_t;


--
1.7.4.1



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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