dm: sandbox: i2c: Add a new 'emulation parent' uclass

[oweals/u-boot.git] / include / reset.h

diff --git a/include/reset.h b/include/reset.h
index d38f1765ec5338c5662ea99c1f1b3b2f3eed663b..bc495a90c2e99d9c565c3aa4dc0e5e730ecb514b 100644 (file)
--- a/include/reset.h
+++ b/include/reset.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2016, NVIDIA CORPORATION.
- *
- * SPDX-License-Identifier: GPL-2.0
  */
 
 #ifndef _RESET_H
@@ -41,10 +40,12 @@ struct udevice;
  *
  * @dev: The device which implements the reset signal.
  * @id: The reset signal ID within the provider.
+ * @data: An optional data field for scenarios where a single integer ID is not
+ *       sufficient. If used, it can be populated through an .of_xlate op and
+ *       processed during the various reset ops.
  *
- * Currently, the reset API assumes that a single integer ID is enough to
- * identify and configure any reset signal for any reset provider. If this
- * assumption becomes invalid in the future, the struct could be expanded to
+ * Should additional information to identify and configure any reset signal
+ * for any provider be required in the future, the struct could be expanded to
  * either (a) add more fields to allow reset providers to store additional
  * information, or (b) replace the id field with an opaque pointer, which the
  * provider would dynamically allocated during its .of_xlate op, and process
@@ -54,10 +55,10 @@ struct udevice;
 struct reset_ctl {
        struct udevice *dev;
        /*
-        * Written by of_xlate. We assume a single id is enough for now. In the
-        * future, we might add more fields here.
+        * Written by of_xlate. In the future, we might add more fields here.
         */
        unsigned long id;
+       unsigned long data;
 };
 
 /**
@@ -78,7 +79,7 @@ struct reset_ctl_bulk {
        unsigned int count;
 };
 
-#ifdef CONFIG_DM_RESET
+#if CONFIG_IS_ENABLED(DM_RESET)
 /**
  * reset_get_by_index - Get/request a reset signal by integer index.
  *
@@ -207,6 +208,15 @@ int reset_deassert(struct reset_ctl *reset_ctl);
  */
 int reset_deassert_bulk(struct reset_ctl_bulk *bulk);
 
+/**
+ * rst_status - Check reset signal status.
+ *
+ * @reset_ctl: The reset signal to check.
+ * @return 0 if deasserted, positive if asserted, or a negative
+ *           error code.
+ */
+int reset_status(struct reset_ctl *reset_ctl);
+
 /**
  * reset_release_all - Assert/Free an array of previously requested resets.
  *
@@ -243,7 +253,8 @@ static inline int reset_get_by_index(struct udevice *dev, int index,
        return -ENOTSUPP;
 }
 
-static inline int reset_get_bulk(struct udevice *dev, struct clk_bulk *bulk)
+static inline int reset_get_bulk(struct udevice *dev,
+                                struct reset_ctl_bulk *bulk)
 {
        return -ENOTSUPP;
 }
@@ -279,12 +290,17 @@ static inline int reset_deassert_bulk(struct reset_ctl_bulk *bulk)
        return 0;
 }
 
+static inline int reset_status(struct reset_ctl *reset_ctl)
+{
+       return -ENOTSUPP;
+}
+
 static inline int reset_release_all(struct reset_ctl *reset_ctl, int count)
 {
        return 0;
 }
 
-static inline int reset_release_bulk(struct clk_bulk *bulk)
+static inline int reset_release_bulk(struct reset_ctl_bulk *bulk)
 {
        return 0;
 }