1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h
new file mode 100644
index 000000000000..5bbcdd455614
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 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 __DCE_I2C_SW_H__
+#define __DCE_I2C_SW_H__
+
+enum {
+	DCE_I2C_DEFAULT_I2C_SW_SPEED = 50,
+	I2C_SW_RETRIES = 10,
+	I2C_SW_TIMEOUT_DELAY = 3000,
+};
+
+struct dce_i2c_sw {
+	struct ddc *ddc;
+	struct dc_context *ctx;
+	uint32_t clock_delay;
+	uint32_t speed;
+};
+
+void dce_i2c_sw_construct(
+	struct dce_i2c_sw *dce_i2c_sw,
+	struct dc_context *ctx);
+
+bool dce_i2c_submit_command_sw(
+	struct resource_pool *pool,
+	struct ddc *ddc,
+	struct i2c_command *cmd,
+	struct dce_i2c_sw *dce_i2c_sw);
+
+struct dce_i2c_sw *dce_i2c_acquire_i2c_sw_engine(
+	struct resource_pool *pool,
+	struct ddc *ddc);
+
+#endif
+