From 045f77baf6b429a446ace64ba3174783a933398a Mon Sep 17 00:00:00 2001 From: David Gounaris Date: Mon, 3 Sep 2018 14:47:28 +0200 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- .../devicetree/bindings/soc/fsl/cpm_qe/network.txt | 6 ++++++ drivers/net/wan/fsl_ucc_hdlc.c | 5 ++++- drivers/net/wan/fsl_ucc_hdlc.h | 1 + 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/network.txt b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/network.txt index 03c741602c6d..6d2dd8a31482 100644 --- a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/network.txt +++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/network.txt @@ -98,6 +98,12 @@ The property below is dependent on fsl,tdm-interface: usage: optional for tdm interface value type: Definition : Internal loopback connecting on TDM layer. +- fsl,hmask + usage: optional + Value type: + Definition: HDLC address recognition. Set to zero to disable + address filtering of packets: + fsl,hmask = /bits/ 16 <0x0000>; Example for tdm interface: diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c index 128230ab53a7..bb52c4dcf22c 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.c +++ b/drivers/net/wan/fsl_ucc_hdlc.c @@ -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"); diff --git a/drivers/net/wan/fsl_ucc_hdlc.h b/drivers/net/wan/fsl_ucc_hdlc.h index c21134c1f180..b99fa2f1cd99 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.h +++ b/drivers/net/wan/fsl_ucc_hdlc.h @@ -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