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acpi: Support copying properties from device tree to ACPI

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Some drivers in Linux support both device tree and ACPI. U-Boot itself
uses Linux device-tree bindings for its own configuration but does not use
ACPI.

It is convenient to copy these values over to the ACPI DP table for
passing to linux. Add some convenience functions to help with this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-07-07 13:11:58 -06:00
committed by Bin Meng
parent 2357234666
commit 0667900049
4 changed files with 174 additions and 0 deletions
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50
include/acpi/acpi_dp.h
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@@ -234,4 +234,54 @@ struct acpi_dp *acpi_dp_add_gpio(struct acpi_dp *dp, const char *name,
*/
int acpi_dp_write(struct acpi_ctx *ctx, struct acpi_dp *table);
/**
* acpi_dp_ofnode_copy_int() - Copy a property from device tree to DP
*
* This copies an integer property from the device tree to the ACPI DP table.
*
* @node: Node to copy from
* @dp: DP to copy to
* @prop: Property name to copy
* @return 0 if OK, -ve on error
*/
int acpi_dp_ofnode_copy_int(ofnode node, struct acpi_dp *dp, const char *prop);
/**
* acpi_dp_ofnode_copy_str() - Copy a property from device tree to DP
*
* This copies a string property from the device tree to the ACPI DP table.
*
* @node: Node to copy from
* @dp: DP to copy to
* @prop: Property name to copy
* @return 0 if OK, -ve on error
*/
int acpi_dp_ofnode_copy_str(ofnode node, struct acpi_dp *dp, const char *prop);
/**
* acpi_dp_dev_copy_int() - Copy a property from device tree to DP
*
* This copies an integer property from the device tree to the ACPI DP table.
*
* @dev: Device to copy from
* @dp: DP to copy to
* @prop: Property name to copy
* @return 0 if OK, -ve on error
*/
int acpi_dp_dev_copy_int(const struct udevice *dev, struct acpi_dp *dp,
const char *prop);
/**
* acpi_dp_dev_copy_str() - Copy a property from device tree to DP
*
* This copies a string property from the device tree to the ACPI DP table.
*
* @dev: Device to copy from
* @dp: DP to copy to
* @prop: Property name to copy
* @return 0 if OK, -ve on error
*/
int acpi_dp_dev_copy_str(const struct udevice *dev, struct acpi_dp *dp,
const char *prop);
#endif