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Message-Id: <1339135311-1896-1-git-send-email-nobuhiro.iwamatsu.yj@renesas.com>
Date: Fri, 8 Jun 2012 15:01:51 +0900
From: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@...esas.com>
To: netdev@...r.kernel.org
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@...esas.com>
Subject: [PATCH] net/sh-eth: Add support selecting MII function for SH7734 and R8A7740
Ethernet IP of SH7734 and R8A7740 has selecting MII register.
The user needs to change a value according to MII to be used.
This adds the function to change the value of this register.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@...esas.com>
---
drivers/net/ethernet/renesas/sh_eth.c | 105 ++++++++++++++++++++-------------
drivers/net/ethernet/renesas/sh_eth.h | 1 +
2 files changed, 64 insertions(+), 42 deletions(-)
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index be3c221..e3d03c8 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -49,6 +49,33 @@
NETIF_MSG_RX_ERR| \
NETIF_MSG_TX_ERR)
+#if defined(CONFIG_CPU_SUBTYPE_SH7734) || defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+ defined(CONFIG_ARCH_R8A7740)
+static void sh_eth_select_mii(struct net_device *ndev)
+{
+ u32 value = 0x0;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->phy_interface) {
+ case PHY_INTERFACE_MODE_GMII:
+ value = 0x2;
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ value = 0x1;
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ value = 0x0;
+ break;
+ default:
+ pr_warn("PHY interface mode was not setup. Set to MII.\n");
+ value = 0x1;
+ break;
+ }
+
+ sh_eth_write(ndev, value, RMII_MII);
+}
+#endif
+
/* There is CPU dependent code */
#if defined(CONFIG_CPU_SUBTYPE_SH7724)
#define SH_ETH_RESET_DEFAULT 1
@@ -283,6 +310,7 @@ static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp)
#elif defined(CONFIG_CPU_SUBTYPE_SH7734) || defined(CONFIG_CPU_SUBTYPE_SH7763)
#define SH_ETH_HAS_TSU 1
static void sh_eth_reset_hw_crc(struct net_device *ndev);
+
static void sh_eth_chip_reset(struct net_device *ndev)
{
struct sh_eth_private *mdp = netdev_priv(ndev);
@@ -292,35 +320,6 @@ static void sh_eth_chip_reset(struct net_device *ndev)
mdelay(1);
}
-static void sh_eth_reset(struct net_device *ndev)
-{
- int cnt = 100;
-
- sh_eth_write(ndev, EDSR_ENALL, EDSR);
- sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR);
- while (cnt > 0) {
- if (!(sh_eth_read(ndev, EDMR) & 0x3))
- break;
- mdelay(1);
- cnt--;
- }
- if (cnt == 0)
- printk(KERN_ERR "Device reset fail\n");
-
- /* Table Init */
- sh_eth_write(ndev, 0x0, TDLAR);
- sh_eth_write(ndev, 0x0, TDFAR);
- sh_eth_write(ndev, 0x0, TDFXR);
- sh_eth_write(ndev, 0x0, TDFFR);
- sh_eth_write(ndev, 0x0, RDLAR);
- sh_eth_write(ndev, 0x0, RDFAR);
- sh_eth_write(ndev, 0x0, RDFXR);
- sh_eth_write(ndev, 0x0, RDFFR);
-
- /* Reset HW CRC register */
- sh_eth_reset_hw_crc(ndev);
-}
-
static void sh_eth_set_duplex(struct net_device *ndev)
{
struct sh_eth_private *mdp = netdev_priv(ndev);
@@ -377,9 +376,43 @@ static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
.tsu = 1,
#if defined(CONFIG_CPU_SUBTYPE_SH7734)
.hw_crc = 1,
+ .select_mii = 1,
#endif
};
+static void sh_eth_reset(struct net_device *ndev)
+{
+ int cnt = 100;
+
+ sh_eth_write(ndev, EDSR_ENALL, EDSR);
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR);
+ while (cnt > 0) {
+ if (!(sh_eth_read(ndev, EDMR) & 0x3))
+ break;
+ mdelay(1);
+ cnt--;
+ }
+ if (cnt == 0)
+ printk(KERN_ERR "Device reset fail\n");
+
+ /* Table Init */
+ sh_eth_write(ndev, 0x0, TDLAR);
+ sh_eth_write(ndev, 0x0, TDFAR);
+ sh_eth_write(ndev, 0x0, TDFXR);
+ sh_eth_write(ndev, 0x0, TDFFR);
+ sh_eth_write(ndev, 0x0, RDLAR);
+ sh_eth_write(ndev, 0x0, RDFAR);
+ sh_eth_write(ndev, 0x0, RDFXR);
+ sh_eth_write(ndev, 0x0, RDFFR);
+
+ /* Reset HW CRC register */
+ sh_eth_reset_hw_crc(ndev);
+
+ /* Select MII mode */
+ if (sh_eth_my_cpu_data.hw_crc)
+ sh_eth_select_mii(ndev);
+}
+
static void sh_eth_reset_hw_crc(struct net_device *ndev)
{
if (sh_eth_my_cpu_data.hw_crc)
@@ -397,19 +430,7 @@ static void sh_eth_chip_reset(struct net_device *ndev)
sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
mdelay(1);
- switch (mdp->phy_interface) {
- case PHY_INTERFACE_MODE_GMII:
- mii = 2;
- break;
- case PHY_INTERFACE_MODE_MII:
- mii = 1;
- break;
- case PHY_INTERFACE_MODE_RMII:
- default:
- mii = 0;
- break;
- }
- sh_eth_write(ndev, mii, RMII_MII);
+ sh_eth_select_mii(ndev);
}
static void sh_eth_reset(struct net_device *ndev)
diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h
index 57b8e1f..d6763b1392 100644
--- a/drivers/net/ethernet/renesas/sh_eth.h
+++ b/drivers/net/ethernet/renesas/sh_eth.h
@@ -757,6 +757,7 @@ struct sh_eth_cpu_data {
unsigned no_trimd:1; /* E-DMAC DO NOT have TRIMD */
unsigned no_ade:1; /* E-DMAC DO NOT have ADE bit in EESR */
unsigned hw_crc:1; /* E-DMAC have CSMR */
+ unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */
};
struct sh_eth_private {
--
1.7.10
--
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