From 5482a978b962abd23f17a004e46d255d11646c20 Mon Sep 17 00:00:00 2001 From: Corentin Labbe Date: Mon, 4 Sep 2017 18:30:14 +0200 Subject: [PATCH] net: mdio-mux: add mdio_mux parameter to mdio_mux_init() mdio_mux_init() use the parameter dev for two distinct thing: 1) Have a device for all devm_ functions 2) Get device_node from it Since it is two distinct purpose, this patch add a parameter mdio_mux that is linked to task 2. This will also permit to register an of_node mdio-mux that lacks a direct owning device. For example a mdio-mux which is a subnode of a real device. Signed-off-by: Corentin Labbe Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/mdio-mux-bcm-iproc.c | 2 +- drivers/net/phy/mdio-mux-gpio.c | 2 +- drivers/net/phy/mdio-mux-mmioreg.c | 3 ++- drivers/net/phy/mdio-mux.c | 7 ++++--- include/linux/mdio-mux.h | 9 +++++++++ 5 files changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/net/phy/mdio-mux-bcm-iproc.c b/drivers/net/phy/mdio-mux-bcm-iproc.c index 0a5f62e0efcc..0831b7142df7 100644 --- a/drivers/net/phy/mdio-mux-bcm-iproc.c +++ b/drivers/net/phy/mdio-mux-bcm-iproc.c @@ -199,7 +199,7 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, md); - rc = mdio_mux_init(md->dev, mdio_mux_iproc_switch_fn, + rc = mdio_mux_init(md->dev, md->dev->of_node, mdio_mux_iproc_switch_fn, &md->mux_handle, md, md->mii_bus); if (rc) { dev_info(md->dev, "mdiomux initialization failed\n"); diff --git a/drivers/net/phy/mdio-mux-gpio.c b/drivers/net/phy/mdio-mux-gpio.c index 919949960a10..082ffef0dec4 100644 --- a/drivers/net/phy/mdio-mux-gpio.c +++ b/drivers/net/phy/mdio-mux-gpio.c @@ -54,7 +54,7 @@ static int mdio_mux_gpio_probe(struct platform_device *pdev) if (IS_ERR(s->gpios)) return PTR_ERR(s->gpios); - r = mdio_mux_init(&pdev->dev, + r = mdio_mux_init(&pdev->dev, pdev->dev.of_node, mdio_mux_gpio_switch_fn, &s->mux_handle, s, NULL); if (r != 0) { diff --git a/drivers/net/phy/mdio-mux-mmioreg.c b/drivers/net/phy/mdio-mux-mmioreg.c index c3825c7da038..2573ab012f16 100644 --- a/drivers/net/phy/mdio-mux-mmioreg.c +++ b/drivers/net/phy/mdio-mux-mmioreg.c @@ -159,7 +159,8 @@ static int mdio_mux_mmioreg_probe(struct platform_device *pdev) } } - ret = mdio_mux_init(&pdev->dev, mdio_mux_mmioreg_switch_fn, + ret = mdio_mux_init(&pdev->dev, pdev->dev.of_node, + mdio_mux_mmioreg_switch_fn, &s->mux_handle, s, NULL); if (ret) { dev_err(&pdev->dev, "failed to register mdio-mux bus %pOF\n", diff --git a/drivers/net/phy/mdio-mux.c b/drivers/net/phy/mdio-mux.c index 6f75e9f27fed..0a86f1e4c02f 100644 --- a/drivers/net/phy/mdio-mux.c +++ b/drivers/net/phy/mdio-mux.c @@ -86,6 +86,7 @@ static int mdio_mux_write(struct mii_bus *bus, int phy_id, static int parent_count; int mdio_mux_init(struct device *dev, + struct device_node *mux_node, int (*switch_fn)(int cur, int desired, void *data), void **mux_handle, void *data, @@ -98,11 +99,11 @@ int mdio_mux_init(struct device *dev, struct mdio_mux_parent_bus *pb; struct mdio_mux_child_bus *cb; - if (!dev->of_node) + if (!mux_node) return -ENODEV; if (!mux_bus) { - parent_bus_node = of_parse_phandle(dev->of_node, + parent_bus_node = of_parse_phandle(mux_node, "mdio-parent-bus", 0); if (!parent_bus_node) @@ -132,7 +133,7 @@ int mdio_mux_init(struct device *dev, pb->mii_bus = parent_bus; ret_val = -ENODEV; - for_each_available_child_of_node(dev->of_node, child_bus_node) { + for_each_available_child_of_node(mux_node, child_bus_node) { int v; r = of_property_read_u32(child_bus_node, "reg", &v); diff --git a/include/linux/mdio-mux.h b/include/linux/mdio-mux.h index 61f5b21b31c7..a5d58f221939 100644 --- a/include/linux/mdio-mux.h +++ b/include/linux/mdio-mux.h @@ -12,7 +12,16 @@ #include #include +/* mdio_mux_init() - Initialize a MDIO mux + * @dev The device owning the MDIO mux + * @mux_node The device node of the MDIO mux + * @switch_fn The function called for switching target MDIO child + * mux_handle A pointer to a (void *) used internaly by mdio-mux + * @data Private data used by switch_fn() + * @mux_bus An optional parent bus (Other case are to use parent_bus property) + */ int mdio_mux_init(struct device *dev, + struct device_node *mux_node, int (*switch_fn) (int cur, int desired, void *data), void **mux_handle, void *data,