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-rw-r--r--drivers/dpll/dpll_core.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/dpll/dpll_core.h b/drivers/dpll/dpll_core.h
new file mode 100644
index 0000000000..717f715015
--- /dev/null
+++ b/drivers/dpll/dpll_core.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2023 Meta Platforms, Inc. and affiliates
+ * Copyright (c) 2023 Intel and affiliates
+ */
+
+#ifndef __DPLL_CORE_H__
+#define __DPLL_CORE_H__
+
+#include <linux/dpll.h>
+#include <linux/list.h>
+#include <linux/refcount.h>
+#include "dpll_nl.h"
+
+#define DPLL_REGISTERED XA_MARK_1
+
+/**
+ * struct dpll_device - stores DPLL device internal data
+ * @id: unique id number for device given by dpll subsystem
+ * @device_idx: id given by dev driver
+ * @clock_id: unique identifier (clock_id) of a dpll
+ * @module: module of creator
+ * @type: type of a dpll
+ * @pin_refs: stores pins registered within a dpll
+ * @refcount: refcount
+ * @registration_list: list of registered ops and priv data of dpll owners
+ **/
+struct dpll_device {
+ u32 id;
+ u32 device_idx;
+ u64 clock_id;
+ struct module *module;
+ enum dpll_type type;
+ struct xarray pin_refs;
+ refcount_t refcount;
+ struct list_head registration_list;
+};
+
+/**
+ * struct dpll_pin - structure for a dpll pin
+ * @id: unique id number for pin given by dpll subsystem
+ * @pin_idx: index of a pin given by dev driver
+ * @clock_id: clock_id of creator
+ * @module: module of creator
+ * @dpll_refs: hold referencees to dplls pin was registered with
+ * @parent_refs: hold references to parent pins pin was registered with
+ * @prop: pin properties copied from the registerer
+ * @rclk_dev_name: holds name of device when pin can recover clock from it
+ * @refcount: refcount
+ **/
+struct dpll_pin {
+ u32 id;
+ u32 pin_idx;
+ u64 clock_id;
+ struct module *module;
+ struct xarray dpll_refs;
+ struct xarray parent_refs;
+ struct dpll_pin_properties prop;
+ refcount_t refcount;
+};
+
+/**
+ * struct dpll_pin_ref - structure for referencing either dpll or pins
+ * @dpll: pointer to a dpll
+ * @pin: pointer to a pin
+ * @registration_list: list of ops and priv data registered with the ref
+ * @refcount: refcount
+ **/
+struct dpll_pin_ref {
+ union {
+ struct dpll_device *dpll;
+ struct dpll_pin *pin;
+ };
+ struct list_head registration_list;
+ refcount_t refcount;
+};
+
+void *dpll_priv(struct dpll_device *dpll);
+void *dpll_pin_on_dpll_priv(struct dpll_device *dpll, struct dpll_pin *pin);
+void *dpll_pin_on_pin_priv(struct dpll_pin *parent, struct dpll_pin *pin);
+
+const struct dpll_device_ops *dpll_device_ops(struct dpll_device *dpll);
+struct dpll_device *dpll_device_get_by_id(int id);
+const struct dpll_pin_ops *dpll_pin_ops(struct dpll_pin_ref *ref);
+struct dpll_pin_ref *dpll_xa_ref_dpll_first(struct xarray *xa_refs);
+extern struct xarray dpll_device_xa;
+extern struct xarray dpll_pin_xa;
+extern struct mutex dpll_lock;
+#endif