efi_loader: type of efi_secure_mode

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

diff --git a/include/syscon.h b/include/syscon.h
index c62ccd61b329b66461395cccd4d315e58975a972..3df96e32764cd681d88804dc1dd0b9107ac4be0b 100644 (file)
--- a/include/syscon.h
+++ b/include/syscon.h
@@ -1,13 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (c) 2015 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef __SYSCON_H
 #define __SYSCON_H
 
+#include <dm/ofnode.h>
+#include <fdtdec.h>
+
 /**
  * struct syscon_uc_info - Information stored by the syscon UCLASS_UCLASS
  *
@@ -23,6 +25,19 @@ struct syscon_ops {
 
 #define syscon_get_ops(dev)        ((struct syscon_ops *)(dev)->driver->ops)
 
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+/*
+ * We don't support 64-bit machines. If they are so resource-contrained that
+ * they need to use OF_PLATDATA, something is horribly wrong with the
+ * education of our hardware engineers.
+ *
+ * Update: 64-bit is now supported and we have an education crisis.
+ */
+struct syscon_base_platdata {
+       fdt_val_t reg[2];
+};
+#endif
+
 /**
  * syscon_get_regmap() - Get access to a register map
  *
@@ -32,6 +47,20 @@ struct syscon_ops {
  */
 struct regmap *syscon_get_regmap(struct udevice *dev);
 
+/**
+ * syscon_get_regmap_by_driver_data() - Look up a controller by its ID
+ *
+ * Each system controller can be accessed by its driver data, which is
+ * assumed to be unique through the scope of all system controllers that
+ * are in use. This function looks up the controller given this driver data.
+ *
+ * @driver_data:       Driver data value to look up
+ * @devp:              Returns the controller correponding to @driver_data
+ * @return 0 on success, -ENODEV if the ID was not found, or other -ve error
+ *        code
+ */
+int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp);
+
 /**
  * syscon_get_regmap_by_driver_data() - Look up a controller by its ID
  *
@@ -44,6 +73,19 @@ struct regmap *syscon_get_regmap(struct udevice *dev);
  */
 struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
 
+/**
+ * syscon_regmap_lookup_by_phandle() - Look up a controller by a phandle
+ *
+ * This operates by looking up the given name in the device (device
+ * tree property) of the device using the system controller.
+ *
+ * @dev:       Device using the system controller
+ * @name:      Name of property referring to the system controller
+ * @return     A pointer to the regmap if found, ERR_PTR(-ve) on error
+ */
+struct regmap *syscon_regmap_lookup_by_phandle(struct udevice *dev,
+                                              const char *name);
+
 /**
  * syscon_get_first_range() - get the first memory range from a syscon regmap
  *
@@ -53,4 +95,11 @@ struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data);
  */
 void *syscon_get_first_range(ulong driver_data);
 
+/**
+ * syscon_node_to_regmap - get regmap from syscon
+ *
+ * @node:              Device node of syscon
+ */
+struct regmap *syscon_node_to_regmap(ofnode node);
+
 #endif