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e2e69291ee
These headers follow the pattern:
| #if CONFIG_IS_ENABLED(FANCY_FEATURE)
| void foo(void);
| #else
| static inline void foo(void) { return -ENOSYS; }
| #endif
In the #else path ENOSYS is used, however linux/errno.h is not included.
If errno.h has not been included already the compiler errors out even
if the inline function is not referenced.
Make those headers self contained.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2020 - Texas Instruments Incorporated - https://www.ti.com/
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* Dave Gerlach <d-gerlach@ti.com>
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*/
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#ifndef __SOC_H
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#define __SOC_H
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#include <linux/errno.h>
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#define SOC_MAX_STR_SIZE 128
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struct udevice;
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/**
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* struct soc_attr - Contains SoC identify information to be used in
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* SoC matching. An array of these structs
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* representing different SoCs can be passed to
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* soc_device_match and the struct matching the SoC
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* in use will be returned.
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*
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* @family - Name of SoC family that can include multiple related SoC
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* variants. Example: am33
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* @machine - Name of a specific SoC. Example: am3352
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* @revision - Name of a specific SoC revision. Example: SR1.1
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* @data - A pointer to user data for the SoC variant
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*/
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struct soc_attr {
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const char *family;
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const char *machine;
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const char *revision;
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const void *data;
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};
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struct soc_ops {
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/**
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* get_machine() - Get machine name of an SOC
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*
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* @dev: Device to check (UCLASS_SOC)
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* @buf: Buffer to place string
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* @size: Size of string space
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* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int (*get_machine)(struct udevice *dev, char *buf, int size);
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/**
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* get_revision() - Get revision name of a SOC
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*
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* @dev: Device to check (UCLASS_SOC)
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* @buf: Buffer to place string
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* @size: Size of string space
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* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int (*get_revision)(struct udevice *dev, char *buf, int size);
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/**
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* get_family() - Get family name of an SOC
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*
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* @dev: Device to check (UCLASS_SOC)
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* @buf: Buffer to place string
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* @size: Size of string space
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* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int (*get_family)(struct udevice *dev, char *buf, int size);
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};
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#define soc_get_ops(dev) ((struct soc_ops *)(dev)->driver->ops)
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#ifdef CONFIG_SOC_DEVICE
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/**
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* soc_get() - Return the soc device for the soc in use.
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* @devp: Pointer to structure to receive the soc device.
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*
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* Since there can only be at most one SOC instance, the API can supply a
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* function that returns the unique device.
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*
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* Return: 0 if OK, -ve on error.
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*/
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int soc_get(struct udevice **devp);
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/**
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* soc_get_machine() - Get machine name of an SOC
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* @dev: Device to check (UCLASS_SOC)
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* @buf: Buffer to place string
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* @size: Size of string space
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*
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* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int soc_get_machine(struct udevice *dev, char *buf, int size);
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/**
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* soc_get_revision() - Get revision name of an SOC
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* @dev: Device to check (UCLASS_SOC)
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* @buf: Buffer to place string
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* @size: Size of string space
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*
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* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int soc_get_revision(struct udevice *dev, char *buf, int size);
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/**
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* soc_get_family() - Get family name of an SOC
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* @dev: Device to check (UCLASS_SOC)
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* @buf: Buffer to place string
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* @size: Size of string space
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*
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* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
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*/
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int soc_get_family(struct udevice *dev, char *buf, int size);
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/**
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* soc_device_match() - Return match from an array of soc_attr
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* @matches: Array with any combination of family, revision or machine set
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*
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* Return: Pointer to struct from matches array with set attributes matching
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* those provided by the soc device, or NULL if no match found.
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*/
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const struct soc_attr *
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soc_device_match(const struct soc_attr *matches);
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#else
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static inline int soc_get(struct udevice **devp)
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{
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return -ENOSYS;
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}
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static inline int soc_get_machine(struct udevice *dev, char *buf, int size)
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{
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return -ENOSYS;
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}
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static inline int soc_get_revision(struct udevice *dev, char *buf, int size)
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{
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return -ENOSYS;
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}
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static inline int soc_get_family(struct udevice *dev, char *buf, int size)
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{
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return -ENOSYS;
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}
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static inline const struct soc_attr *
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soc_device_match(const struct soc_attr *matches)
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{
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return NULL;
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}
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#endif
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#endif /* _SOC_H */
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