stmmac: unify MAC and PHY configuration parameters (V2)
Prior to this change, most PHY configuration parameters were passed
into the STMMAC device as a separate PHY device. As well as being
unusual, this made it difficult to make changes to the MAC/PHY
relationship.
This patch moves all the PHY parameters into the MAC configuration
structure, mainly as a separate structure. This allows us to completely
ignore the MDIO bus attached to a stmmac if desired, and not create
the PHY bus. It also allows the stmmac driver to use a different PHY
from the one it is connected to, for example a fixed PHY or bit banging
PHY.
Also derive the stmmac/PHY connection type (MII/RMII etc) from the
mode can be passed into <platf>_configure_ethernet.
STLinux kernel at git://git.stlinux.com/stm/linux-sh4-2.6.32.y.git
provides several examples how to use this new infrastructure (that
actually is easier to maintain and clearer).
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
index 40a6ae5..c6e567e 100644
--- a/drivers/net/stmmac/stmmac_main.c
+++ b/drivers/net/stmmac/stmmac_main.c
@@ -49,7 +49,6 @@
#include "stmmac.h"
#define STMMAC_RESOURCE_NAME "stmmaceth"
-#define PHY_RESOURCE_NAME "stmmacphy"
#undef STMMAC_DEBUG
/*#define STMMAC_DEBUG*/
@@ -305,18 +304,13 @@
priv->speed = 0;
priv->oldduplex = -1;
- if (priv->phy_addr == -1) {
- /* We don't have a PHY, so do nothing */
- return 0;
- }
-
snprintf(bus_id, MII_BUS_ID_SIZE, "%x", priv->plat->bus_id);
snprintf(phy_id, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
- priv->phy_addr);
+ priv->plat->phy_addr);
pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id);
phydev = phy_connect(dev, phy_id, &stmmac_adjust_link, 0,
- priv->phy_interface);
+ priv->plat->interface);
if (IS_ERR(phydev)) {
pr_err("%s: Could not attach to PHY\n", dev->name);
@@ -335,7 +329,7 @@
return -ENODEV;
}
pr_debug("stmmac_init_phy: %s: attached to PHY (UID 0x%x)"
- " Link = %d\n", dev->name, phydev->phy_id, phydev->link);
+ " Link = %d\n", dev->name, phydev->phy_id, phydev->link);
priv->phydev = phydev;
@@ -1528,71 +1522,6 @@
return 0;
}
-static int stmmacphy_dvr_probe(struct platform_device *pdev)
-{
- struct plat_stmmacphy_data *plat_dat = pdev->dev.platform_data;
-
- pr_debug("stmmacphy_dvr_probe: added phy for bus %d\n",
- plat_dat->bus_id);
-
- return 0;
-}
-
-static int stmmacphy_dvr_remove(struct platform_device *pdev)
-{
- return 0;
-}
-
-static struct platform_driver stmmacphy_driver = {
- .driver = {
- .name = PHY_RESOURCE_NAME,
- },
- .probe = stmmacphy_dvr_probe,
- .remove = stmmacphy_dvr_remove,
-};
-
-/**
- * stmmac_associate_phy
- * @dev: pointer to device structure
- * @data: points to the private structure.
- * Description: Scans through all the PHYs we have registered and checks if
- * any are associated with our MAC. If so, then just fill in
- * the blanks in our local context structure
- */
-static int stmmac_associate_phy(struct device *dev, void *data)
-{
- struct stmmac_priv *priv = (struct stmmac_priv *)data;
- struct plat_stmmacphy_data *plat_dat = dev->platform_data;
-
- DBG(probe, DEBUG, "%s: checking phy for bus %d\n", __func__,
- plat_dat->bus_id);
-
- /* Check that this phy is for the MAC being initialised */
- if (priv->plat->bus_id != plat_dat->bus_id)
- return 0;
-
- /* OK, this PHY is connected to the MAC.
- Go ahead and get the parameters */
- DBG(probe, DEBUG, "%s: OK. Found PHY config\n", __func__);
- priv->phy_irq =
- platform_get_irq_byname(to_platform_device(dev), "phyirq");
- DBG(probe, DEBUG, "%s: PHY irq on bus %d is %d\n", __func__,
- plat_dat->bus_id, priv->phy_irq);
-
- /* Override with kernel parameters if supplied XXX CRS XXX
- * this needs to have multiple instances */
- if ((phyaddr >= 0) && (phyaddr <= 31))
- plat_dat->phy_addr = phyaddr;
-
- priv->phy_addr = plat_dat->phy_addr;
- priv->phy_mask = plat_dat->phy_mask;
- priv->phy_interface = plat_dat->interface;
- priv->phy_reset = plat_dat->phy_reset;
-
- DBG(probe, DEBUG, "%s: exiting\n", __func__);
- return 1; /* forces exit of driver_for_each_device() */
-}
-
/**
* stmmac_dvr_probe
* @pdev: platform device pointer
@@ -1683,14 +1612,10 @@
if (ret < 0)
goto out_plat_exit;
- /* associate a PHY - it is provided by another platform bus */
- if (!driver_for_each_device
- (&(stmmacphy_driver.driver), NULL, (void *)priv,
- stmmac_associate_phy)) {
- pr_err("No PHY device is associated with this MAC!\n");
- ret = -ENODEV;
- goto out_unregister;
- }
+ /* Override with kernel parameters if supplied XXX CRS XXX
+ * this needs to have multiple instances */
+ if ((phyaddr >= 0) && (phyaddr <= 31))
+ priv->plat->phy_addr = phyaddr;
pr_info("\t%s - (dev. name: %s - id: %d, IRQ #%d\n"
"\tIO base addr: 0x%p)\n", ndev->name, pdev->name,
@@ -1890,11 +1815,6 @@
{
int ret;
- if (platform_driver_register(&stmmacphy_driver)) {
- pr_err("No PHY devices registered!\n");
- return -ENODEV;
- }
-
ret = platform_driver_register(&stmmac_driver);
return ret;
}
@@ -1905,7 +1825,6 @@
*/
static void __exit stmmac_cleanup_module(void)
{
- platform_driver_unregister(&stmmacphy_driver);
platform_driver_unregister(&stmmac_driver);
}