Commit bdb0066df96e ("mfd: syscon: Decouple syscon interface from platform
devices") added the possibility to register syscon devices without
associated platform device. This also removed regmap debugfs facilities,
which don't work without a device. Since there is no replacement, this
patch allows again to register syscon regions with an associated device
where that this device exists anyway.Signed-off-by: Philipp Zabel <[email protected]> --- Changes since v1: - Rebased onto for-mfd-next --- drivers/mfd/syscon.c | 10 ++++++++-- include/linux/mfd/syscon.h | 10 ++++++++++ 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c index 2f2225e..fe67fb0 100644 --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -42,7 +42,7 @@ static const struct regmap_config syscon_regmap_config = { .reg_stride = 4, }; -static struct syscon *of_syscon_register(struct device_node *np) +struct syscon *syscon_register(struct device *dev, struct device_node *np) { struct syscon *syscon; struct regmap *regmap; @@ -89,7 +89,7 @@ static struct syscon *of_syscon_register(struct device_node *np) syscon_config.val_bits = reg_io_width * 8; syscon_config.max_register = resource_size(&res) - reg_io_width; - regmap = regmap_init_mmio(NULL, base, &syscon_config); + regmap = regmap_init_mmio(dev, base, &syscon_config); if (IS_ERR(regmap)) { pr_err("regmap init failed\n"); ret = PTR_ERR(regmap); @@ -111,6 +111,12 @@ err_map: kfree(syscon); return ERR_PTR(ret); } +EXPORT_SYMBOL_GPL(syscon_register); + +static struct syscon *of_syscon_register(struct device_node *np) +{ + return syscon_register(NULL, np); +} struct regmap *syscon_node_to_regmap(struct device_node *np) { diff --git a/include/linux/mfd/syscon.h b/include/linux/mfd/syscon.h index 1088149..e26037c 100644 --- a/include/linux/mfd/syscon.h +++ b/include/linux/mfd/syscon.h @@ -17,10 +17,14 @@ #include <linux/err.h> +struct device; struct device_node; +struct syscon; #ifdef CONFIG_MFD_SYSCON extern struct regmap *syscon_node_to_regmap(struct device_node *np); +extern struct syscon *syscon_register(struct device *dev, + struct device_node *np); extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s); extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s); extern struct regmap *syscon_regmap_lookup_by_phandle( @@ -32,6 +36,12 @@ static inline struct regmap *syscon_node_to_regmap(struct device_node *np) return ERR_PTR(-ENOTSUPP); } +static struct syscon *syscon_register(struct device *dev, + struct device_node *np) +{ + return ERR_PTR(-ENOTSUPP); +} + static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s) { return ERR_PTR(-ENOTSUPP); -- 2.7.0
