From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/include/linux/reset.h | 180 +++++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 148 insertions(+), 32 deletions(-)
diff --git a/kernel/include/linux/reset.h b/kernel/include/linux/reset.h
index 09732c3..05aa9f4 100644
--- a/kernel/include/linux/reset.h
+++ b/kernel/include/linux/reset.h
@@ -2,6 +2,8 @@
#ifndef _LINUX_RESET_H_
#define _LINUX_RESET_H_
+#include <linux/err.h>
+#include <linux/errno.h>
#include <linux/types.h>
struct device;
@@ -14,23 +16,28 @@
int reset_control_assert(struct reset_control *rstc);
int reset_control_deassert(struct reset_control *rstc);
int reset_control_status(struct reset_control *rstc);
+int reset_control_acquire(struct reset_control *rstc);
+void reset_control_release(struct reset_control *rstc);
struct reset_control *__of_reset_control_get(struct device_node *node,
const char *id, int index, bool shared,
- bool optional);
+ bool optional, bool acquired);
struct reset_control *__reset_control_get(struct device *dev, const char *id,
int index, bool shared,
- bool optional);
+ bool optional, bool acquired);
void reset_control_put(struct reset_control *rstc);
int __device_reset(struct device *dev, bool optional);
struct reset_control *__devm_reset_control_get(struct device *dev,
const char *id, int index, bool shared,
- bool optional);
+ bool optional, bool acquired);
struct reset_control *devm_reset_control_array_get(struct device *dev,
bool shared, bool optional);
struct reset_control *of_reset_control_array_get(struct device_node *np,
- bool shared, bool optional);
+ bool shared, bool optional,
+ bool acquired);
+
+int reset_control_get_count(struct device *dev);
#else
@@ -54,6 +61,15 @@
return 0;
}
+static inline int reset_control_acquire(struct reset_control *rstc)
+{
+ return 0;
+}
+
+static inline void reset_control_release(struct reset_control *rstc)
+{
+}
+
static inline void reset_control_put(struct reset_control *rstc)
{
}
@@ -66,21 +82,23 @@
static inline struct reset_control *__of_reset_control_get(
struct device_node *node,
const char *id, int index, bool shared,
- bool optional)
+ bool optional, bool acquired)
{
return optional ? NULL : ERR_PTR(-ENOTSUPP);
}
static inline struct reset_control *__reset_control_get(
struct device *dev, const char *id,
- int index, bool shared, bool optional)
+ int index, bool shared, bool optional,
+ bool acquired)
{
return optional ? NULL : ERR_PTR(-ENOTSUPP);
}
static inline struct reset_control *__devm_reset_control_get(
struct device *dev, const char *id,
- int index, bool shared, bool optional)
+ int index, bool shared, bool optional,
+ bool acquired)
{
return optional ? NULL : ERR_PTR(-ENOTSUPP);
}
@@ -92,9 +110,15 @@
}
static inline struct reset_control *
-of_reset_control_array_get(struct device_node *np, bool shared, bool optional)
+of_reset_control_array_get(struct device_node *np, bool shared, bool optional,
+ bool acquired)
{
return optional ? NULL : ERR_PTR(-ENOTSUPP);
+}
+
+static inline int reset_control_get_count(struct device *dev)
+{
+ return -ENOENT;
}
#endif /* CONFIG_RESET_CONTROLLER */
@@ -116,10 +140,10 @@
* @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
+ * If this function is called more than once for the same reset_control it will
* return -EBUSY.
*
- * See reset_control_get_shared for details on shared references to
+ * See reset_control_get_shared() for details on shared references to
* reset-controls.
*
* Use of id names is optional.
@@ -127,7 +151,28 @@
static inline struct reset_control *
__must_check reset_control_get_exclusive(struct device *dev, const char *id)
{
- return __reset_control_get(dev, id, 0, false, false);
+ return __reset_control_get(dev, id, 0, false, false, true);
+}
+
+/**
+ * reset_control_get_exclusive_released - Lookup and obtain a temoprarily
+ * 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.
+ * reset-controls returned by this function must be acquired via
+ * reset_control_acquire() before they can be used and should be released
+ * via reset_control_release() afterwards.
+ *
+ * Use of id names is optional.
+ */
+static inline struct reset_control *
+__must_check reset_control_get_exclusive_released(struct device *dev,
+ const char *id)
+{
+ return __reset_control_get(dev, id, 0, false, false, false);
}
/**
@@ -138,7 +183,7 @@
*
* 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.
+ * 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
@@ -155,19 +200,41 @@
static inline struct reset_control *reset_control_get_shared(
struct device *dev, const char *id)
{
- return __reset_control_get(dev, id, 0, true, false);
+ return __reset_control_get(dev, id, 0, true, false, false);
}
+/**
+ * reset_control_get_optional_exclusive - optional reset_control_get_exclusive()
+ * @dev: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Optional variant of reset_control_get_exclusive(). If the requested reset
+ * is not specified in the device tree, this function returns NULL instead of
+ * an error.
+ *
+ * See reset_control_get_exclusive() for more information.
+ */
static inline struct reset_control *reset_control_get_optional_exclusive(
struct device *dev, const char *id)
{
- return __reset_control_get(dev, id, 0, false, true);
+ return __reset_control_get(dev, id, 0, false, true, true);
}
+/**
+ * reset_control_get_optional_shared - optional reset_control_get_shared()
+ * @dev: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Optional variant of reset_control_get_shared(). If the requested reset
+ * is not specified in the device tree, this function returns NULL instead of
+ * an error.
+ *
+ * See reset_control_get_shared() for more information.
+ */
static inline struct reset_control *reset_control_get_optional_shared(
struct device *dev, const char *id)
{
- return __reset_control_get(dev, id, 0, true, true);
+ return __reset_control_get(dev, id, 0, true, true, false);
}
/**
@@ -183,11 +250,11 @@
static inline struct reset_control *of_reset_control_get_exclusive(
struct device_node *node, const char *id)
{
- return __of_reset_control_get(node, id, 0, false, false);
+ return __of_reset_control_get(node, id, 0, false, false, true);
}
/**
- * of_reset_control_get_shared - Lookup and obtain an shared reference
+ * of_reset_control_get_shared - Lookup and obtain a shared reference
* to a reset controller.
* @node: device to be reset by the controller
* @id: reset line name
@@ -208,7 +275,7 @@
static inline struct reset_control *of_reset_control_get_shared(
struct device_node *node, const char *id)
{
- return __of_reset_control_get(node, id, 0, true, false);
+ return __of_reset_control_get(node, id, 0, true, false, false);
}
/**
@@ -225,11 +292,11 @@
static inline struct reset_control *of_reset_control_get_exclusive_by_index(
struct device_node *node, int index)
{
- return __of_reset_control_get(node, NULL, index, false, false);
+ return __of_reset_control_get(node, NULL, index, false, false, true);
}
/**
- * of_reset_control_get_shared_by_index - Lookup and obtain an shared
+ * of_reset_control_get_shared_by_index - Lookup and obtain a shared
* reference to a reset controller
* by index.
* @node: device to be reset by the controller
@@ -253,7 +320,7 @@
static inline struct reset_control *of_reset_control_get_shared_by_index(
struct device_node *node, int index)
{
- return __of_reset_control_get(node, NULL, index, true, false);
+ return __of_reset_control_get(node, NULL, index, true, false, false);
}
/**
@@ -272,7 +339,26 @@
__must_check devm_reset_control_get_exclusive(struct device *dev,
const char *id)
{
- return __devm_reset_control_get(dev, id, 0, false, false);
+ return __devm_reset_control_get(dev, id, 0, false, false, true);
+}
+
+/**
+ * devm_reset_control_get_exclusive_released - resource managed
+ * reset_control_get_exclusive_released()
+ * @dev: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Managed reset_control_get_exclusive_released(). For reset controllers
+ * returned from this function, reset_control_put() is called automatically on
+ * driver detach.
+ *
+ * See reset_control_get_exclusive_released() for more information.
+ */
+static inline struct reset_control *
+__must_check devm_reset_control_get_exclusive_released(struct device *dev,
+ const char *id)
+{
+ return __devm_reset_control_get(dev, id, 0, false, false, false);
}
/**
@@ -287,19 +373,43 @@
static inline struct reset_control *devm_reset_control_get_shared(
struct device *dev, const char *id)
{
- return __devm_reset_control_get(dev, id, 0, true, false);
+ return __devm_reset_control_get(dev, id, 0, true, false, false);
}
+/**
+ * devm_reset_control_get_optional_exclusive - resource managed
+ * reset_control_get_optional_exclusive()
+ * @dev: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Managed reset_control_get_optional_exclusive(). For reset controllers
+ * returned from this function, reset_control_put() is called automatically on
+ * driver detach.
+ *
+ * See reset_control_get_optional_exclusive() for more information.
+ */
static inline struct reset_control *devm_reset_control_get_optional_exclusive(
struct device *dev, const char *id)
{
- return __devm_reset_control_get(dev, id, 0, false, true);
+ return __devm_reset_control_get(dev, id, 0, false, true, true);
}
+/**
+ * devm_reset_control_get_optional_shared - resource managed
+ * reset_control_get_optional_shared()
+ * @dev: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Managed reset_control_get_optional_shared(). For reset controllers returned
+ * from this function, reset_control_put() is called automatically on driver
+ * detach.
+ *
+ * See reset_control_get_optional_shared() for more information.
+ */
static inline struct reset_control *devm_reset_control_get_optional_shared(
struct device *dev, const char *id)
{
- return __devm_reset_control_get(dev, id, 0, true, true);
+ return __devm_reset_control_get(dev, id, 0, true, true, false);
}
/**
@@ -317,12 +427,12 @@
static inline struct reset_control *
devm_reset_control_get_exclusive_by_index(struct device *dev, int index)
{
- return __devm_reset_control_get(dev, NULL, index, false, false);
+ return __devm_reset_control_get(dev, NULL, index, false, false, true);
}
/**
* devm_reset_control_get_shared_by_index - resource managed
- * reset_control_get_shared
+ * reset_control_get_shared
* @dev: device to be reset by the controller
* @index: index of the reset controller
*
@@ -333,7 +443,7 @@
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, true, false);
+ return __devm_reset_control_get(dev, NULL, index, true, false, false);
}
/*
@@ -405,24 +515,30 @@
static inline struct reset_control *
of_reset_control_array_get_exclusive(struct device_node *node)
{
- return of_reset_control_array_get(node, false, false);
+ return of_reset_control_array_get(node, false, false, true);
+}
+
+static inline struct reset_control *
+of_reset_control_array_get_exclusive_released(struct device_node *node)
+{
+ return of_reset_control_array_get(node, false, false, false);
}
static inline struct reset_control *
of_reset_control_array_get_shared(struct device_node *node)
{
- return of_reset_control_array_get(node, true, false);
+ return of_reset_control_array_get(node, true, false, true);
}
static inline struct reset_control *
of_reset_control_array_get_optional_exclusive(struct device_node *node)
{
- return of_reset_control_array_get(node, false, true);
+ return of_reset_control_array_get(node, false, true, true);
}
static inline struct reset_control *
of_reset_control_array_get_optional_shared(struct device_node *node)
{
- return of_reset_control_array_get(node, true, true);
+ return of_reset_control_array_get(node, true, true, true);
}
#endif
--
Gitblit v1.6.2