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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2020 - Texas Instruments Incorporated - http://www.ti.com/
* Dave Gerlach <d-gerlach@ti.com>
*/
#ifndef __SOC_H
#define __SOC_H
#define SOC_MAX_STR_SIZE 128
/**
* struct soc_attr - Contains SoC identify information to be used in
* SoC matching. An array of these structs
* representing different SoCs can be passed to
* soc_device_match and the struct matching the SoC
* in use will be returned.
*
* @family - Name of SoC family that can include multiple related SoC
* variants. Example: am33
* @machine - Name of a specific SoC. Example: am3352
* @revision - Name of a specific SoC revision. Example: SR1.1
* @data - A pointer to user data for the SoC variant
*/
struct soc_attr {
const char *family;
const char *machine;
const char *revision;
const void *data;
};
struct soc_ops {
/**
* get_machine() - Get machine name of an SOC
*
* @dev: Device to check (UCLASS_SOC)
* @buf: Buffer to place string
* @size: Size of string space
* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int (*get_machine)(struct udevice *dev, char *buf, int size);
/**
* get_revision() - Get revision name of a SOC
*
* @dev: Device to check (UCLASS_SOC)
* @buf: Buffer to place string
* @size: Size of string space
* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int (*get_revision)(struct udevice *dev, char *buf, int size);
/**
* get_family() - Get family name of an SOC
*
* @dev: Device to check (UCLASS_SOC)
* @buf: Buffer to place string
* @size: Size of string space
* @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int (*get_family)(struct udevice *dev, char *buf, int size);
};
#define soc_get_ops(dev) ((struct soc_ops *)(dev)->driver->ops)
#ifdef CONFIG_SOC_DEVICE
/**
* soc_get() - Return the soc device for the soc in use.
* @devp: Pointer to structure to receive the soc device.
*
* Since there can only be at most one SOC instance, the API can supply a
* function that returns the unique device.
*
* Return: 0 if OK, -ve on error.
*/
int soc_get(struct udevice **devp);
/**
* soc_get_machine() - Get machine name of an SOC
* @dev: Device to check (UCLASS_SOC)
* @buf: Buffer to place string
* @size: Size of string space
*
* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int soc_get_machine(struct udevice *dev, char *buf, int size);
/**
* soc_get_revision() - Get revision name of an SOC
* @dev: Device to check (UCLASS_SOC)
* @buf: Buffer to place string
* @size: Size of string space
*
* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int soc_get_revision(struct udevice *dev, char *buf, int size);
/**
* soc_get_family() - Get family name of an SOC
* @dev: Device to check (UCLASS_SOC)
* @buf: Buffer to place string
* @size: Size of string space
*
* Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error
*/
int soc_get_family(struct udevice *dev, char *buf, int size);
/**
* soc_device_match() - Return match from an array of soc_attr
* @matches: Array with any combination of family, revision or machine set
*
* Return: Pointer to struct from matches array with set attributes matching
* those provided by the soc device, or NULL if no match found.
*/
const struct soc_attr *
soc_device_match(const struct soc_attr *matches);
#else
static inline int soc_get(struct udevice **devp)
{
return -ENOSYS;
}
static inline int soc_get_machine(struct udevice *dev, char *buf, int size)
{
return -ENOSYS;
}
static inline int soc_get_revision(struct udevice *dev, char *buf, int size)
{
return -ENOSYS;
}
static inline int soc_get_family(struct udevice *dev, char *buf, int size)
{
return -ENOSYS;
}
static inline const struct soc_attr *
soc_device_match(const struct soc_attr *matches)
{
return NULL;
}
#endif
#endif /* _SOC_H */
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