mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 02:19:51 +00:00
![Daniel Lezcano](/assets/img/avatar_default.png)
The Mediatek's thermal driver fails to compile when the RESET_CONTROLLER option is not set. Logically, as the driver depends on this option to compile, the Kconfig should select it but actually that is not correct because the Kconfig provides also the COMPILE_TEST to increase the compile test coverage. By providing the missing 'device_reset' stub for the driver in reset.h, that let the kernel to compile on different platforms with the Mediatek thermal driver enabled with the COMPILE_TEST option. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
246 lines
7.1 KiB
C
246 lines
7.1 KiB
C
#ifndef _LINUX_RESET_H_
|
|
#define _LINUX_RESET_H_
|
|
|
|
#include <linux/device.h>
|
|
|
|
struct reset_control;
|
|
|
|
#ifdef CONFIG_RESET_CONTROLLER
|
|
|
|
int reset_control_reset(struct reset_control *rstc);
|
|
int reset_control_assert(struct reset_control *rstc);
|
|
int reset_control_deassert(struct reset_control *rstc);
|
|
int reset_control_status(struct reset_control *rstc);
|
|
|
|
struct reset_control *__of_reset_control_get(struct device_node *node,
|
|
const char *id, int index, int shared);
|
|
void reset_control_put(struct reset_control *rstc);
|
|
struct reset_control *__devm_reset_control_get(struct device *dev,
|
|
const char *id, int index, int shared);
|
|
|
|
int __must_check device_reset(struct device *dev);
|
|
|
|
static inline int device_reset_optional(struct device *dev)
|
|
{
|
|
return device_reset(dev);
|
|
}
|
|
|
|
#else
|
|
|
|
static inline int reset_control_reset(struct reset_control *rstc)
|
|
{
|
|
WARN_ON(1);
|
|
return 0;
|
|
}
|
|
|
|
static inline int reset_control_assert(struct reset_control *rstc)
|
|
{
|
|
WARN_ON(1);
|
|
return 0;
|
|
}
|
|
|
|
static inline int reset_control_deassert(struct reset_control *rstc)
|
|
{
|
|
WARN_ON(1);
|
|
return 0;
|
|
}
|
|
|
|
static inline int reset_control_status(struct reset_control *rstc)
|
|
{
|
|
WARN_ON(1);
|
|
return 0;
|
|
}
|
|
|
|
static inline void reset_control_put(struct reset_control *rstc)
|
|
{
|
|
WARN_ON(1);
|
|
}
|
|
|
|
static inline int __must_check device_reset(struct device *dev)
|
|
{
|
|
WARN_ON(1);
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int device_reset_optional(struct device *dev)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline struct reset_control *__of_reset_control_get(
|
|
struct device_node *node,
|
|
const char *id, int index, int shared)
|
|
{
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static inline struct reset_control *__devm_reset_control_get(
|
|
struct device *dev,
|
|
const char *id, int index, int shared)
|
|
{
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
#endif /* CONFIG_RESET_CONTROLLER */
|
|
|
|
/**
|
|
* reset_control_get - Lookup and obtain an exclusive reference to a
|
|
* reset controller.
|
|
* @dev: device to be reset by the controller
|
|
* @id: reset line name
|
|
*
|
|
* Returns a struct reset_control or IS_ERR() condition containing errno.
|
|
* If this function is called more then once for the same reset_control it will
|
|
* return -EBUSY.
|
|
*
|
|
* See reset_control_get_shared for details on shared references to
|
|
* reset-controls.
|
|
*
|
|
* Use of id names is optional.
|
|
*/
|
|
static inline struct reset_control *__must_check reset_control_get(
|
|
struct device *dev, const char *id)
|
|
{
|
|
#ifndef CONFIG_RESET_CONTROLLER
|
|
WARN_ON(1);
|
|
#endif
|
|
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0);
|
|
}
|
|
|
|
static inline struct reset_control *reset_control_get_optional(
|
|
struct device *dev, const char *id)
|
|
{
|
|
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* reset_control_get_shared - Lookup and obtain a shared reference to a
|
|
* reset controller.
|
|
* @dev: device to be reset by the controller
|
|
* @id: reset line name
|
|
*
|
|
* Returns a struct reset_control or IS_ERR() condition containing errno.
|
|
* This function is intended for use with reset-controls which are shared
|
|
* between hardware-blocks.
|
|
*
|
|
* When a reset-control is shared, the behavior of reset_control_assert /
|
|
* deassert is changed, the reset-core will keep track of a deassert_count
|
|
* and only (re-)assert the reset after reset_control_assert has been called
|
|
* as many times as reset_control_deassert was called. Also see the remark
|
|
* about shared reset-controls in the reset_control_assert docs.
|
|
*
|
|
* Calling reset_control_assert without first calling reset_control_deassert
|
|
* is not allowed on a shared reset control. Calling reset_control_reset is
|
|
* also not allowed on a shared reset control.
|
|
*
|
|
* Use of id names is optional.
|
|
*/
|
|
static inline struct reset_control *reset_control_get_shared(
|
|
struct device *dev, const char *id)
|
|
{
|
|
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 1);
|
|
}
|
|
|
|
/**
|
|
* of_reset_control_get - Lookup and obtain an exclusive reference to a
|
|
* reset controller.
|
|
* @node: device to be reset by the controller
|
|
* @id: reset line name
|
|
*
|
|
* Returns a struct reset_control or IS_ERR() condition containing errno.
|
|
*
|
|
* Use of id names is optional.
|
|
*/
|
|
static inline struct reset_control *of_reset_control_get(
|
|
struct device_node *node, const char *id)
|
|
{
|
|
return __of_reset_control_get(node, id, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* of_reset_control_get_by_index - Lookup and obtain an exclusive reference to
|
|
* a reset controller by index.
|
|
* @node: device to be reset by the controller
|
|
* @index: index of the reset controller
|
|
*
|
|
* This is to be used to perform a list of resets for a device or power domain
|
|
* in whatever order. Returns a struct reset_control or IS_ERR() condition
|
|
* containing errno.
|
|
*/
|
|
static inline struct reset_control *of_reset_control_get_by_index(
|
|
struct device_node *node, int index)
|
|
{
|
|
return __of_reset_control_get(node, NULL, index, 0);
|
|
}
|
|
|
|
/**
|
|
* devm_reset_control_get - resource managed reset_control_get()
|
|
* @dev: device to be reset by the controller
|
|
* @id: reset line name
|
|
*
|
|
* Managed reset_control_get(). For reset controllers returned from this
|
|
* function, reset_control_put() is called automatically on driver detach.
|
|
* See reset_control_get() for more information.
|
|
*/
|
|
static inline struct reset_control *__must_check devm_reset_control_get(
|
|
struct device *dev, const char *id)
|
|
{
|
|
#ifndef CONFIG_RESET_CONTROLLER
|
|
WARN_ON(1);
|
|
#endif
|
|
return __devm_reset_control_get(dev, id, 0, 0);
|
|
}
|
|
|
|
static inline struct reset_control *devm_reset_control_get_optional(
|
|
struct device *dev, const char *id)
|
|
{
|
|
return __devm_reset_control_get(dev, id, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* devm_reset_control_get_by_index - resource managed reset_control_get
|
|
* @dev: device to be reset by the controller
|
|
* @index: index of the reset controller
|
|
*
|
|
* Managed reset_control_get(). For reset controllers returned from this
|
|
* function, reset_control_put() is called automatically on driver detach.
|
|
* See reset_control_get() for more information.
|
|
*/
|
|
static inline struct reset_control *devm_reset_control_get_by_index(
|
|
struct device *dev, int index)
|
|
{
|
|
return __devm_reset_control_get(dev, NULL, index, 0);
|
|
}
|
|
|
|
/**
|
|
* devm_reset_control_get_shared - resource managed reset_control_get_shared()
|
|
* @dev: device to be reset by the controller
|
|
* @id: reset line name
|
|
*
|
|
* Managed reset_control_get_shared(). For reset controllers returned from
|
|
* this function, reset_control_put() is called automatically on driver detach.
|
|
* See reset_control_get_shared() for more information.
|
|
*/
|
|
static inline struct reset_control *devm_reset_control_get_shared(
|
|
struct device *dev, const char *id)
|
|
{
|
|
return __devm_reset_control_get(dev, id, 0, 1);
|
|
}
|
|
|
|
/**
|
|
* devm_reset_control_get_shared_by_index - resource managed
|
|
* reset_control_get_shared
|
|
* @dev: device to be reset by the controller
|
|
* @index: index of the reset controller
|
|
*
|
|
* Managed reset_control_get_shared(). For reset controllers returned from
|
|
* this function, reset_control_put() is called automatically on driver detach.
|
|
* See reset_control_get_shared() for more information.
|
|
*/
|
|
static inline struct reset_control *devm_reset_control_get_shared_by_index(
|
|
struct device *dev, int index)
|
|
{
|
|
return __devm_reset_control_get(dev, NULL, index, 1);
|
|
}
|
|
|
|
#endif
|