From b48355277340f156f387c31da5a0b8937643c54f Mon Sep 17 00:00:00 2001 From: Philip Richard Oberfichtner Date: Tue, 31 Oct 2023 08:38:46 +0100 Subject: i2c: Implement i2c_get_chip_by_phandle() This new function enhances the i2c_get_chip*() toolbox by implementing a variant that does not require a chip_addr. Instead, the desired device is pointed to by a phandle. Signed-off-by: Philip Richard Oberfichtner Reviewed-by: Heiko Schocher --- include/i2c.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/i2c.h') diff --git a/include/i2c.h b/include/i2c.h index ef3820eaba..4e59009cd9 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -537,6 +537,18 @@ int i2c_get_chip(struct udevice *bus, uint chip_addr, uint offset_len, int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len, struct udevice **devp); +/** + * i2c_get_chip_by_phandle() - get a device to use to access a chip + * based on a phandle property pointing to it + * + * @parent: Parent device containing the phandle pointer + * @name: Name of phandle property in the parent device node + * @devp: Returns pointer to new device or NULL if not found + * Return: 0 on success, -ve on failure + */ +int i2c_get_chip_by_phandle(const struct udevice *parent, const char *prop_name, + struct udevice **devp); + /** * i2c_chip_of_to_plat() - Decode standard I2C platform data * -- cgit v1.2.3