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net/wan/fsl_ucc_hdlc: hmask 

Ability to set hmask in the device-tree,
which can be used to change address
filtering of packets.

Signed-off-by: David Gounaris <david.gounaris@infinera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
David Gounaris 2018-09-03 14:47:28 +02:00 committed by David S. Miller
parent 8978ca7c8b
commit 045f77baf6
3 changed files with 11 additions and 1 deletions
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6
Documentation/devicetree/bindings/soc/fsl/cpm_qe/network.txt
View File

@ -98,6 +98,12 @@ The property below is dependent on fsl,tdm-interface:
usage: optional for tdm interface
value type: <empty>
Definition : Internal loopback connecting on TDM layer.
- fsl,hmask
usage: optional
Value type: <u16>
Definition: HDLC address recognition. Set to zero to disable
address filtering of packets:
fsl,hmask = /bits/ 16 <0x0000>;
Example for tdm interface:

5
drivers/net/wan/fsl_ucc_hdlc.c
View File

@ -265,7 +265,7 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
iowrite16be(MAX_FRAME_LENGTH, &priv->ucc_pram->mflr);
iowrite16be(DEFAULT_RFTHR, &priv->ucc_pram->rfthr);
iowrite16be(DEFAULT_RFTHR, &priv->ucc_pram->rfcnt);
iowrite16be(DEFAULT_ADDR_MASK, &priv->ucc_pram->hmask);
iowrite16be(priv->hmask, &priv->ucc_pram->hmask);
iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr1);
iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr2);
iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr3);
@ -1096,6 +1096,9 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
goto free_utdm;
}
if (of_property_read_u16(np, "fsl,hmask", &uhdlc_priv->hmask))
uhdlc_priv->hmask = DEFAULT_ADDR_MASK;
ret = uhdlc_init(uhdlc_priv);
if (ret) {
dev_err(&pdev->dev, "Failed to init uhdlc\n");

1
drivers/net/wan/fsl_ucc_hdlc.h
View File

@ -106,6 +106,7 @@ struct ucc_hdlc_private {
unsigned short encoding;
unsigned short parity;
unsigned short hmask;
u32 clocking;
spinlock_t lock; /* lock for Tx BD and Tx buffer */
#ifdef CONFIG_PM