--- /dev/null
+/*
+ * Samsung TV Mixer driver
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ *
+ * Tomasz Stanislawski, <t.stanislaws@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundiation. either version 2 of the License,
+ * or (at your option) any later version
+ */
+
+#include "mixer.h"
+
+#include "regs-vp.h"
+
+#include <media/videobuf2-dma-contig.h>
+
+/* FORMAT DEFINITIONS */
+static const struct mxr_format mxr_fmt_nv12 = {
+ .name = "NV12",
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .num_planes = 2,
+ .plane = {
+ { .width = 1, .height = 1, .size = 1 },
+ { .width = 2, .height = 2, .size = 2 },
+ },
+ .num_subframes = 1,
+ .cookie = VP_MODE_NV12 | VP_MODE_MEM_LINEAR,
+};
+
+static const struct mxr_format mxr_fmt_nv21 = {
+ .name = "NV21",
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .num_planes = 2,
+ .plane = {
+ { .width = 1, .height = 1, .size = 1 },
+ { .width = 2, .height = 2, .size = 2 },
+ },
+ .num_subframes = 1,
+ .cookie = VP_MODE_NV21 | VP_MODE_MEM_LINEAR,
+};
+
+static const struct mxr_format mxr_fmt_nv12m = {
+ .name = "NV12 (mplane)",
+ .fourcc = V4L2_PIX_FMT_NV12M,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .num_planes = 2,
+ .plane = {
+ { .width = 1, .height = 1, .size = 1 },
+ { .width = 2, .height = 2, .size = 2 },
+ },
+ .num_subframes = 2,
+ .plane2subframe = {0, 1},
+ .cookie = VP_MODE_NV12 | VP_MODE_MEM_LINEAR,
+};
+
+static const struct mxr_format mxr_fmt_nv12mt = {
+ .name = "NV12 tiled (mplane)",
+ .fourcc = V4L2_PIX_FMT_NV12MT,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .num_planes = 2,
+ .plane = {
+ { .width = 128, .height = 32, .size = 4096 },
+ { .width = 128, .height = 32, .size = 2048 },
+ },
+ .num_subframes = 2,
+ .plane2subframe = {0, 1},
+ .cookie = VP_MODE_NV12 | VP_MODE_MEM_TILED,
+};
+
+static const struct mxr_format *mxr_video_format[] = {
+ &mxr_fmt_nv12,
+ &mxr_fmt_nv21,
+ &mxr_fmt_nv12m,
+ &mxr_fmt_nv12mt,
+};
+
+/* AUXILIARY CALLBACKS */
+
+static void mxr_vp_layer_release(struct mxr_layer *layer)
+{
+ mxr_base_layer_unregister(layer);
+ mxr_base_layer_release(layer);
+}
+
+static void mxr_vp_buffer_set(struct mxr_layer *layer,
+ struct mxr_buffer *buf)
+{
+ dma_addr_t luma_addr[2] = {0, 0};
+ dma_addr_t chroma_addr[2] = {0, 0};
+
+ if (buf == NULL) {
+ mxr_reg_vp_buffer(layer->mdev, luma_addr, chroma_addr);
+ return;
+ }
+ luma_addr[0] = vb2_dma_contig_plane_dma_addr(&buf->vb, 0);
+ if (layer->fmt->num_subframes == 2) {
+ chroma_addr[0] = vb2_dma_contig_plane_dma_addr(&buf->vb, 1);
+ } else {
+ /* FIXME: mxr_get_plane_size compute integer division,
+ * which is slow and should not be performed in interrupt */
+ chroma_addr[0] = luma_addr[0] + mxr_get_plane_size(
+ &layer->fmt->plane[0], layer->geo.src.full_width,
+ layer->geo.src.full_height);
+ }
+ if (layer->fmt->cookie & VP_MODE_MEM_TILED) {
+ luma_addr[1] = luma_addr[0] + 0x40;
+ chroma_addr[1] = chroma_addr[0] + 0x40;
+ } else {
+ luma_addr[1] = luma_addr[0] + layer->geo.src.full_width;
+ chroma_addr[1] = chroma_addr[0];
+ }
+ mxr_reg_vp_buffer(layer->mdev, luma_addr, chroma_addr);
+}
+
+static void mxr_vp_stream_set(struct mxr_layer *layer, int en)
+{
+ mxr_reg_vp_layer_stream(layer->mdev, en);
+}
+
+static void mxr_vp_format_set(struct mxr_layer *layer)
+{
+ mxr_reg_vp_format(layer->mdev, layer->fmt, &layer->geo);
+}
+
+static inline unsigned int do_center(unsigned int center,
+ unsigned int size, unsigned int upper, unsigned int flags)
+{
+ unsigned int lower;
+
+ if (flags & MXR_NO_OFFSET)
+ return 0;
+
+ lower = center - min(center, size / 2);
+ return min(lower, upper - size);
+}
+
+static void mxr_vp_fix_geometry(struct mxr_layer *layer,
+ enum mxr_geometry_stage stage, unsigned long flags)
+{
+ struct mxr_geometry *geo = &layer->geo;
+ struct mxr_crop *src = &geo->src;
+ struct mxr_crop *dst = &geo->dst;
+ unsigned long x_center, y_center;
+
+ switch (stage) {
+
+ case MXR_GEOMETRY_SINK: /* nothing to be fixed here */
+ case MXR_GEOMETRY_COMPOSE:
+ /* remember center of the area */
+ x_center = dst->x_offset + dst->width / 2;
+ y_center = dst->y_offset + dst->height / 2;
+
+ /* ensure that compose is reachable using 16x scaling */
+ dst->width = clamp(dst->width, 8U, 16 * src->full_width);
+ dst->height = clamp(dst->height, 1U, 16 * src->full_height);
+
+ /* setup offsets */
+ dst->x_offset = do_center(x_center, dst->width,
+ dst->full_width, flags);
+ dst->y_offset = do_center(y_center, dst->height,
+ dst->full_height, flags);
+ flags = 0; /* remove possible MXR_NO_OFFSET flag */
+ /* fall through */
+ case MXR_GEOMETRY_CROP:
+ /* remember center of the area */
+ x_center = src->x_offset + src->width / 2;
+ y_center = src->y_offset + src->height / 2;
+
+ /* ensure scaling is between 0.25x .. 16x */
+ src->width = clamp(src->width, round_up(dst->width / 16, 4),
+ dst->width * 4);
+ src->height = clamp(src->height, round_up(dst->height / 16, 4),
+ dst->height * 4);
+
+ /* hardware limits */
+ src->width = clamp(src->width, 32U, 2047U);
+ src->height = clamp(src->height, 4U, 2047U);
+
+ /* setup offsets */
+ src->x_offset = do_center(x_center, src->width,
+ src->full_width, flags);
+ src->y_offset = do_center(y_center, src->height,
+ src->full_height, flags);
+
+ /* setting scaling ratio */
+ geo->x_ratio = (src->width << 16) / dst->width;
+ geo->y_ratio = (src->height << 16) / dst->height;
+ /* fall through */
+
+ case MXR_GEOMETRY_SOURCE:
+ src->full_width = clamp(src->full_width,
+ ALIGN(src->width + src->x_offset, 8), 8192U);
+ src->full_height = clamp(src->full_height,
+ src->height + src->y_offset, 8192U);
+ }
+}
+
+/* PUBLIC API */
+
+struct mxr_layer *mxr_vp_layer_create(struct mxr_device *mdev, int idx)
+{
+ struct mxr_layer *layer;
+ int ret;
+ struct mxr_layer_ops ops = {
+ .release = mxr_vp_layer_release,
+ .buffer_set = mxr_vp_buffer_set,
+ .stream_set = mxr_vp_stream_set,
+ .format_set = mxr_vp_format_set,
+ .fix_geometry = mxr_vp_fix_geometry,
+ };
+ char name[32];
+
+ sprintf(name, "video%d", idx);
+
+ layer = mxr_base_layer_create(mdev, idx, name, &ops);
+ if (layer == NULL) {
+ mxr_err(mdev, "failed to initialize layer(%d) base\n", idx);
+ goto fail;
+ }
+
+ layer->fmt_array = mxr_video_format;
+ layer->fmt_array_size = ARRAY_SIZE(mxr_video_format);
+
+ ret = mxr_base_layer_register(layer);
+ if (ret)
+ goto fail_layer;
+
+ return layer;
+
+fail_layer:
+ mxr_base_layer_release(layer);
+
+fail:
+ return NULL;
+}
+
Code Review / kvmfornfv.git / blobdiff