net: systemport: add Wake-on-LAN support

Support for Wake-on-LAN using Magic Packet with or without SecureOn
password is implemented doing the following:

- setting the password to the relevant UniMAC registers
- flagging the device as a wakeup source for the system, as well as
  its Wake-on-LAN interrupt
- prepare the hardware for entering WoL mode
- enabling the MPD interrupt to wake us

The Device Tree binding documentation is also reflected to specify the
third optional Wake-on-LAN interrupt line.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.h b/drivers/net/ethernet/broadcom/bcmsysport.h
index 20ea716..b08dab8 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.h
+++ b/drivers/net/ethernet/broadcom/bcmsysport.h
@@ -246,6 +246,15 @@ struct bcm_rsb {
 #define  MIB_RX_CNT_RST			(1 << 0)
 #define  MIB_RUNT_CNT_RST		(1 << 1)
 #define  MIB_TX_CNT_RST			(1 << 2)
+
+#define UMAC_MPD_CTRL			0x620
+#define  MPD_EN				(1 << 0)
+#define  MSEQ_LEN_SHIFT			16
+#define  MSEQ_LEN_MASK			0xff
+#define  PSW_EN				(1 << 27)
+
+#define UMAC_PSW_MS			0x624
+#define UMAC_PSW_LS			0x628
 #define UMAC_MDF_CTRL			0x650
 #define UMAC_MDF_ADDR			0x654
 
@@ -642,6 +651,7 @@ struct bcm_sysport_priv {
 	struct platform_device	*pdev;
 	int			irq0;
 	int			irq1;
+	int			wol_irq;
 
 	/* Transmit rings */
 	struct bcm_sysport_tx_ring tx_rings[TDMA_NUM_RINGS];
@@ -668,6 +678,8 @@ struct bcm_sysport_priv {
 	unsigned int		tsb_en:1;
 	unsigned int		crc_fwd:1;
 	u16			rev;
+	u32			wolopts;
+	unsigned int		wol_irq_disabled:1;
 
 	/* MIB related fields */
 	struct bcm_sysport_mib	mib;