[media] media: venus: adding core part and helper functions

* core.c has implemented the platform driver methods, file
operations and v4l2 registration.

 * helpers.c has implemented common helper functions for:
   - buffer management

   - vb2_ops and functions for format propagation,

   - functions for allocating and freeing buffers for
   internal usage. The buffer parameters describing internal
   buffers depends on current format, resolution and codec.

   - functions for calculation of current load of the
   hardware. Depending on the count of instances and
   resolutions it selects the best clock rate for the video
   core.

 * firmware loader

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/media/platform/qcom/venus/helpers.h b/drivers/media/platform/qcom/venus/helpers.h
new file mode 100644
index 000000000000..6a061b417a93
--- /dev/null
+++ b/drivers/media/platform/qcom/venus/helpers.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2017 Linaro Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+#ifndef __VENUS_HELPERS_H__
+#define __VENUS_HELPERS_H__
+
+#include <media/videobuf2-v4l2.h>
+
+struct venus_inst;
+
+struct vb2_v4l2_buffer *venus_helper_find_buf(struct venus_inst *inst,
+					      unsigned int type, u32 idx);
+void venus_helper_buffers_done(struct venus_inst *inst,
+			       enum vb2_buffer_state state);
+int venus_helper_vb2_buf_init(struct vb2_buffer *vb);
+int venus_helper_vb2_buf_prepare(struct vb2_buffer *vb);
+void venus_helper_vb2_buf_queue(struct vb2_buffer *vb);
+void venus_helper_vb2_stop_streaming(struct vb2_queue *q);
+int venus_helper_vb2_start_streaming(struct venus_inst *inst);
+void venus_helper_m2m_device_run(void *priv);
+void venus_helper_m2m_job_abort(void *priv);
+int venus_helper_get_bufreq(struct venus_inst *inst, u32 type,
+			    struct hfi_buffer_requirements *req);
+int venus_helper_set_input_resolution(struct venus_inst *inst,
+				      unsigned int width, unsigned int height);
+int venus_helper_set_output_resolution(struct venus_inst *inst,
+				       unsigned int width, unsigned int height);
+int venus_helper_set_num_bufs(struct venus_inst *inst, unsigned int input_bufs,
+			      unsigned int output_bufs);
+int venus_helper_set_color_format(struct venus_inst *inst, u32 fmt);
+void venus_helper_acquire_buf_ref(struct vb2_v4l2_buffer *vbuf);
+void venus_helper_release_buf_ref(struct venus_inst *inst, unsigned int idx);
+void venus_helper_init_instance(struct venus_inst *inst);
+#endif