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| author | Marcin Niestroj <m.niestroj@grinn-global.com> | 2019-06-28 17:37:27 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-07-02 08:15:32 +0200 |
| commit | 6e465b62125af759c9e90f86ece45f136242e72d (patch) | |
| tree | 8c0b1ba0429223150d1daa616c003bd3242ada28 /drivers/mfd | |
| parent | d71573a006a2fc2b83c076c556b88166f4e3dec3 (diff) | |
| download | barebox-6e465b62125af759c9e90f86ece45f136242e72d.tar.gz barebox-6e465b62125af759c9e90f86ece45f136242e72d.tar.xz | |
mfd: syscon: add syscon_regmap_lookup_by_phandle()
This function is handy when syscon is passed as phandle to device_node
property.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/syscon.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c index b1ff1b1eac..8099419378 100644 --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -174,6 +174,25 @@ struct regmap *syscon_regmap_lookup_by_compatible(const char *s) return regmap; } +struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np, + const char *property) +{ + struct device_node *syscon_np; + struct regmap *regmap; + + if (property) + syscon_np = of_parse_phandle(np, property, 0); + else + syscon_np = np; + + if (!syscon_np) + return ERR_PTR(-ENODEV); + + regmap = syscon_node_to_regmap(syscon_np); + + return regmap; +} + static int syscon_probe(struct device_d *dev) { struct syscon *syscon; |