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Subject[PATCH 3/3] net: macb: remove #if defined(CONFIG_ARCH_AT91) sections
Date
With multi platform support those sections could lead to unexpected
behavior if both ARCH_AT91 and another ARM SoC using the MACB IP are
selected.
Add two new capabilities to encode the default MII mode and the presence
of a CLKEN bit in USRIO register.
Then define the appropriate config for IPs embedded in at91 SoCs.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/net/ethernet/cadence/macb.c | 33 ++++++++++++++++++---------------
drivers/net/ethernet/cadence/macb.h | 2 ++
2 files changed, 20 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index ad76b8e..a7dbf04 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -2113,6 +2113,10 @@ static const struct net_device_ops macb_netdev_ops = {
};

#if defined(CONFIG_OF)
+static struct macb_config at91sam9260_config = {
+ .caps = MACB_CAPS_USRIO_HAS_CLKEN | MACB_CAPS_USRIO_DEFAULT_IS_MII,
+};
+
static struct macb_config pc302gem_config = {
.caps = MACB_CAPS_SG_DISABLED | MACB_CAPS_GIGABIT_MODE_AVAILABLE,
.dma_burst_length = 16,
@@ -2130,7 +2134,7 @@ static struct macb_config sama5d4_config = {

static const struct of_device_id macb_dt_ids[] = {
{ .compatible = "cdns,at32ap7000-macb" },
- { .compatible = "cdns,at91sam9260-macb" },
+ { .compatible = "cdns,at91sam9260-macb", .data = &at91sam9260_config },
{ .compatible = "cdns,macb" },
{ .compatible = "cdns,pc302-gem", .data = &pc302gem_config },
{ .compatible = "cdns,gem", .data = &pc302gem_config },
@@ -2388,21 +2392,20 @@ static int macb_probe(struct platform_device *pdev)
bp->phy_interface = err;
}

+ config = 0;
if (bp->phy_interface == PHY_INTERFACE_MODE_RGMII)
- macb_or_gem_writel(bp, USRIO, GEM_BIT(RGMII));
- else if (bp->phy_interface == PHY_INTERFACE_MODE_RMII)
-#if defined(CONFIG_ARCH_AT91)
- macb_or_gem_writel(bp, USRIO, (MACB_BIT(RMII) |
- MACB_BIT(CLKEN)));
-#else
- macb_or_gem_writel(bp, USRIO, 0);
-#endif
- else
-#if defined(CONFIG_ARCH_AT91)
- macb_or_gem_writel(bp, USRIO, MACB_BIT(CLKEN));
-#else
- macb_or_gem_writel(bp, USRIO, MACB_BIT(MII));
-#endif
+ config = GEM_BIT(RGMII);
+ else if (bp->phy_interface == PHY_INTERFACE_MODE_RMII &&
+ (bp->caps & MACB_CAPS_USRIO_DEFAULT_IS_MII))
+ config = MACB_BIT(RMII);
+ else if (bp->phy_interface == PHY_INTERFACE_MODE_MII &&
+ !(bp->caps & MACB_CAPS_USRIO_DEFAULT_IS_MII))
+ config = MACB_BIT(MII);
+
+ if (bp->caps & MACB_CAPS_USRIO_HAS_CLKEN)
+ config |= MACB_BIT(CLKEN);
+
+ macb_or_gem_writel(bp, USRIO, config);

err = register_netdev(dev);
if (err) {
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 31dc080..efe0247 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -389,6 +389,8 @@

/* Capability mask bits */
#define MACB_CAPS_ISR_CLEAR_ON_WRITE 0x00000001
+#define MACB_CAPS_USRIO_HAS_CLKEN 0x00000002
+#define MACB_CAPS_USRIO_DEFAULT_IS_MII 0x00000004
#define MACB_CAPS_FIFO_MODE 0x10000000
#define MACB_CAPS_GIGABIT_MODE_AVAILABLE 0x20000000
#define MACB_CAPS_SG_DISABLED 0x40000000
--
1.9.1


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