ks8842: Support 100Mbps when accessed via timberdale

This patch removes the code which disables 100Mbps advertising when
the ks8842 is accessed via timberdale.

At higher speed it's good to be nice to the internal state machine
of timberdale by acking interrupts. That is done by a write to the
interrupt ack register (IAR).

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ks8842.c b/drivers/net/ks8842.c
index 634dad1..289b0be 100644 (file)
--- a/drivers/net/ks8842.c
+++ b/drivers/net/ks8842.c
@@ -34,7 +34,12 @@
 #define DRV_NAME "ks8842"
 
 /* Timberdale specific Registers */
-#define REG_TIMB_RST   0x1c
+#define REG_TIMB_RST           0x1c
+#define REG_TIMB_FIFO          0x20
+#define REG_TIMB_ISR           0x24
+#define REG_TIMB_IER           0x28
+#define REG_TIMB_IAR           0x2C
+#define REQ_TIMB_DMA_RESUME    0x30
 
 /* KS8842 registers */
 
@@ -282,10 +287,6 @@ static void ks8842_reset_hw(struct ks8842_adapter *adapter)
        /* restart port auto-negotiation */
        ks8842_enable_bits(adapter, 49, 1 << 13, REG_P1CR4);
 
-       if (!(adapter->conf_flags & MICREL_KS884X))
-               /* only advertise 10Mbps */
-               ks8842_clear_bits(adapter, 49, 3 << 2, REG_P1CR4);
-
        /* Enable the transmitter */
        ks8842_enable_tx(adapter);
 
@@ -543,6 +544,10 @@ void ks8842_tasklet(unsigned long arg)
        /* Ack */
        ks8842_write16(adapter, 18, isr, REG_ISR);
 
+       if (!(adapter->conf_flags & MICREL_KS884X))
+               /* Ack in the timberdale IP as well */
+               iowrite32(0x1, adapter->hw_addr + REG_TIMB_IAR);
+
        if (!netif_running(netdev))
                return;