Message ID | 1526615528-9707-1-git-send-email-djw@t-chip.com.cn (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Fri, May 18, 2018 at 5:52 AM, <djw@t-chip.com.cn> wrote: > From: Heiko Stuebner <heiko@sntech.de> > > Syscon nodes can be a simple-mfd and the syscon-users then be declared > as children of this node. That way the parent-child structure can be > better represented for devices that are fully embedded in the syscon. > > Therefore allow getting the syscon from the parent if neither > a special compatible nor a gpio,syscon-dev property is defined. > > Signed-off-by: Heiko Stuebner <heiko@sntech.de> > Signed-off-by: Levin Du <djw@t-chip.com.cn> > --- > > Changes in v2: None > Changes in v1: > - New: allow fetching syscon from parent node in gpio-syscon driver Regardless of what happens with the rest of the patches this looks sane and generally useful, so patch applied! Yours, Linus Walleij
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c index 537cec7..7325b86 100644 --- a/drivers/gpio/gpio-syscon.c +++ b/drivers/gpio/gpio-syscon.c @@ -205,6 +205,8 @@ static int syscon_gpio_probe(struct platform_device *pdev) } else { priv->syscon = syscon_regmap_lookup_by_phandle(np, "gpio,syscon-dev"); + if (IS_ERR(priv->syscon) && np->parent) + priv->syscon = syscon_node_to_regmap(np->parent); if (IS_ERR(priv->syscon)) return PTR_ERR(priv->syscon);