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regmap-irq: make it possible to add irq_chip do a specific device node

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Add a new function regmap_add_irq_chip_np() with its corresponding
devm_regmap_add_irq_chip_np() variant. Sometimes one want to register
the IRQ domain on a different device node that the one of the regmap
node. For example when using a MFD where there are different interrupt
controllers and particularly for the generic regmap gpio_chip/irq_chip
driver. In this case it is not desireable to have the IRQ domain on
the parent node.

Signed-off-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20200402203656.27047-5-michael@walle.cc
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Michael Walle 2020-04-02 22:36:44 +02:00 • committed by Mark Brown
parent 8f3d9f3542
commit 1247938287
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GPG key ID: 24D68B725D5487D0
2 changed files with 90 additions and 28 deletions
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10
include/linux/regmap.h
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@ -21,6 +21,7 @@
struct module;
struct clk;
struct device;
struct device_node;
struct i2c_client;
struct i3c_device;
struct irq_domain;
@ -1310,12 +1311,21 @@ struct regmap_irq_chip_data;
int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
int irq_base, const struct regmap_irq_chip *chip,
struct regmap_irq_chip_data **data);
int regmap_add_irq_chip_np(struct device_node *np, struct regmap *map, int irq,
int irq_flags, int irq_base,
const struct regmap_irq_chip *chip,
struct regmap_irq_chip_data **data);
void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
int devm_regmap_add_irq_chip(struct device *dev, struct regmap *map, int irq,
int irq_flags, int irq_base,
const struct regmap_irq_chip *chip,
struct regmap_irq_chip_data **data);
int devm_regmap_add_irq_chip_np(struct device *dev, struct device_node *np,
struct regmap *map, int irq, int irq_flags,
int irq_base,
const struct regmap_irq_chip *chip,
struct regmap_irq_chip_data **data);
void devm_regmap_del_irq_chip(struct device *dev, int irq,
struct regmap_irq_chip_data *data);