drm/amd/dc: Add dc display driver (v2)

Supported DCE versions: 8.0, 10.0, 11.0, 11.2

v2: rebase against 4.11

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
new file mode 100644
index 000000000000..67ae799b6f4f
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
@@ -0,0 +1,113 @@
+/*
+ * 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
+ *
+ */
+
+#include "dm_services.h"
+#include "dm_helpers.h"
+#include "core_types.h"
+
+/*******************************************************************************
+ * Private definitions
+ ******************************************************************************/
+
+struct sink {
+	struct core_sink protected;
+	int ref_count;
+};
+
+#define DC_SINK_TO_SINK(dc_sink) \
+			container_of(dc_sink, struct sink, protected.public)
+
+/*******************************************************************************
+ * Private functions
+ ******************************************************************************/
+
+static void destruct(struct sink *sink)
+{
+
+}
+
+static bool construct(struct sink *sink, const struct dc_sink_init_data *init_params)
+{
+
+	struct core_link *core_link = DC_LINK_TO_LINK(init_params->link);
+
+	sink->protected.public.sink_signal = init_params->sink_signal;
+	sink->protected.link = core_link;
+	sink->protected.ctx = core_link->ctx;
+	sink->protected.dongle_max_pix_clk = init_params->dongle_max_pix_clk;
+	sink->protected.converter_disable_audio =
+			init_params->converter_disable_audio;
+
+	return true;
+}
+
+/*******************************************************************************
+ * Public functions
+ ******************************************************************************/
+
+void dc_sink_retain(const struct dc_sink *dc_sink)
+{
+	struct sink *sink = DC_SINK_TO_SINK(dc_sink);
+
+	++sink->ref_count;
+}
+
+void dc_sink_release(const struct dc_sink *dc_sink)
+{
+	struct sink *sink = DC_SINK_TO_SINK(dc_sink);
+
+	--sink->ref_count;
+
+	if (sink->ref_count == 0) {
+		destruct(sink);
+		dm_free(sink);
+	}
+}
+
+struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params)
+{
+	struct sink *sink = dm_alloc(sizeof(*sink));
+
+	if (NULL == sink)
+		goto alloc_fail;
+
+	if (false == construct(sink, init_params))
+		goto construct_fail;
+
+	/* TODO should we move this outside to where the assignment actually happens? */
+	dc_sink_retain(&sink->protected.public);
+
+	return &sink->protected.public;
+
+construct_fail:
+	dm_free(sink);
+
+alloc_fail:
+	return NULL;
+}
+
+/*******************************************************************************
+ * Protected functions - visible only inside of DC (not visible in DM)
+ ******************************************************************************/