1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/i2c_generic_hw_engine.h b/drivers/gpu/drm/amd/display/dc/i2caux/i2c_generic_hw_engine.h
new file mode 100644
index 000000000000..1da0397b04a2
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/i2c_generic_hw_engine.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2012-15 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DAL_I2C_GENERIC_HW_ENGINE_H__
+#define __DAL_I2C_GENERIC_HW_ENGINE_H__
+
+struct i2c_generic_transaction_attributes {
+	enum i2caux_transaction_action action;
+	uint32_t transaction_size;
+	bool start_bit;
+	bool stop_bit;
+	bool last_read;
+};
+
+struct i2c_generic_hw_engine;
+
+struct i2c_generic_hw_engine_funcs {
+	void (*write_address)(
+		struct i2c_generic_hw_engine *engine,
+		uint8_t address);
+	void (*write_data)(
+		struct i2c_generic_hw_engine *engine,
+		const uint8_t *buffer,
+		uint32_t length);
+	void (*read_data)(
+		struct i2c_generic_hw_engine *engine,
+		uint8_t *buffer,
+		uint32_t length,
+		uint32_t offset);
+	void (*execute_transaction)(
+		struct i2c_generic_hw_engine *engine,
+		struct i2c_generic_transaction_attributes *attributes);
+};
+
+struct i2c_generic_hw_engine {
+	struct i2c_hw_engine base;
+	const struct i2c_generic_hw_engine_funcs *funcs;
+};
+
+void dal_i2c_generic_hw_engine_construct(
+	struct i2c_generic_hw_engine *engine,
+	struct dc_context *ctx);
+
+void dal_i2c_generic_hw_engine_destruct(
+	struct i2c_generic_hw_engine *engine);
+enum i2caux_engine_type dal_i2c_generic_hw_engine_get_engine_type(
+	const struct engine *engine);
+bool dal_i2c_generic_hw_engine_submit_request(
+	struct engine *ptr,
+	struct i2caux_transaction_request *i2caux_request,
+	bool middle_of_transaction);
+uint32_t dal_i2c_generic_hw_engine_get_transaction_timeout(
+	const struct i2c_hw_engine *engine,
+	uint32_t length);
+#endif