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Commit e0f4fec0 authored by Mian Yousaf Kaukab's avatar Mian Yousaf Kaukab Committed by Lee Jones
Browse files

mfd: abx500-core: Provide an API to dump all ABx500 registers 



Some drivers can detect subsystem failures e.g. shared memory driver
can detect modem sub system failures. It would be helpful in analyzing
these failures if AB register dump is available at that point. This
patch adds the API for the drivers to dump AB registers in the kernel
log.

Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarMian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Reviewed-by: default avatarLinus WALLEIJ <linus.walleij@stericsson.com>
Reviewed-by: default avatarJonas ABERG <jonas.aberg@stericsson.com>
parent c73db9f7

drivers/mfd/abx500-core.c

+16 −0
Original line number Diff line number Diff line
@@ -153,6 +153,22 @@ int abx500_startup_irq_enabled(struct device *dev, unsigned int irq) 
}

EXPORT_SYMBOL(abx500_startup_irq_enabled);



void abx500_dump_all_banks(void)

{

	struct abx500_ops *ops;

	struct device dummy_child = {0};

	struct abx500_device_entry *dev_entry;



	list_for_each_entry(dev_entry, &abx500_list, list) {

		dummy_child.parent = dev_entry->dev;

		ops = &dev_entry->ops;



		if ((ops != NULL) && (ops->dump_all_banks != NULL))

			ops->dump_all_banks(&dummy_child);

	}

}

EXPORT_SYMBOL(abx500_dump_all_banks);



MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");

MODULE_DESCRIPTION("ABX500 core driver");

MODULE_LICENSE("GPL");

include/linux/mfd/abx500.h

+2 −0
Original line number Diff line number Diff line
@@ -308,6 +308,7 @@ int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank, 
int abx500_get_chip_id(struct device *dev);

int abx500_event_registers_startup_state_get(struct device *dev, u8 *event);

int abx500_startup_irq_enabled(struct device *dev, unsigned int irq);

void abx500_dump_all_banks(void);



struct abx500_ops {

	int (*get_chip_id) (struct device *);
@@ -318,6 +319,7 @@ struct abx500_ops { 
	int (*mask_and_set_register) (struct device *, u8, u8, u8, u8);

	int (*event_registers_startup_state_get) (struct device *, u8 *);

	int (*startup_irq_enabled) (struct device *, unsigned int);

	void (*dump_all_banks) (struct device *);

};



int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops);