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spmi: add a helper to look up an SPMI device from a device node

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The helper function spmi_device_from_of() takes a device node and
returns the SPMI device associated with it.
This is like of_find_device_by_node but for SPMI devices.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
This commit is contained in:
Caleb Connolly 2022-03-23 16:28:12 +00:00 • committed by Jami Kettunen
parent 60f70f81ba
commit 39331eb8a6
2 changed files with 20 additions and 0 deletions
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3
include/linux/spmi.h
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@ -164,6 +164,9 @@ static inline void spmi_driver_unregister(struct spmi_driver *sdrv)
module_driver(__spmi_driver, spmi_driver_register, \
spmi_driver_unregister)
struct device_node;
struct spmi_device *spmi_device_from_of(struct device_node *np);
int spmi_register_read(struct spmi_device *sdev, u8 addr, u8 *buf);
int spmi_ext_register_read(struct spmi_device *sdev, u8 addr, u8 *buf,
size_t len);