diff options
Diffstat (limited to 'drivers/media/video/s5p-tv/mixer_grp_layer.c')
| -rw-r--r-- | drivers/media/video/s5p-tv/mixer_grp_layer.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-tv/mixer_grp_layer.c b/drivers/media/video/s5p-tv/mixer_grp_layer.c new file mode 100644 index 000000000000..58f0ba49580f --- /dev/null +++ b/drivers/media/video/s5p-tv/mixer_grp_layer.c @@ -0,0 +1,185 @@ +/* + * 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 <media/videobuf2-dma-contig.h> + +/* FORMAT DEFINITIONS */ + +static const struct mxr_format mxr_fb_fmt_rgb565 = { + .name = "RGB565", + .fourcc = V4L2_PIX_FMT_RGB565, + .colorspace = V4L2_COLORSPACE_SRGB, + .num_planes = 1, + .plane = { + { .width = 1, .height = 1, .size = 2 }, + }, + .num_subframes = 1, + .cookie = 4, +}; + +static const struct mxr_format mxr_fb_fmt_argb1555 = { + .name = "ARGB1555", + .num_planes = 1, + .fourcc = V4L2_PIX_FMT_RGB555, + .colorspace = V4L2_COLORSPACE_SRGB, + .plane = { + { .width = 1, .height = 1, .size = 2 }, + }, + .num_subframes = 1, + .cookie = 5, +}; + +static const struct mxr_format mxr_fb_fmt_argb4444 = { + .name = "ARGB4444", + .num_planes = 1, + .fourcc = V4L2_PIX_FMT_RGB444, + .colorspace = V4L2_COLORSPACE_SRGB, + .plane = { + { .width = 1, .height = 1, .size = 2 }, + }, + .num_subframes = 1, + .cookie = 6, +}; + +static const struct mxr_format mxr_fb_fmt_argb8888 = { + .name = "ARGB8888", + .fourcc = V4L2_PIX_FMT_BGR32, + .colorspace = V4L2_COLORSPACE_SRGB, + .num_planes = 1, + .plane = { + { .width = 1, .height = 1, .size = 4 }, + }, + .num_subframes = 1, + .cookie = 7, +}; + +static const struct mxr_format *mxr_graph_format[] = { + &mxr_fb_fmt_rgb565, + &mxr_fb_fmt_argb1555, + &mxr_fb_fmt_argb4444, + &mxr_fb_fmt_argb8888, +}; + +/* AUXILIARY CALLBACKS */ + +static void mxr_graph_layer_release(struct mxr_layer *layer) +{ + mxr_base_layer_unregister(layer); + mxr_base_layer_release(layer); +} + +static void mxr_graph_buffer_set(struct mxr_layer *layer, + struct mxr_buffer *buf) +{ + dma_addr_t addr = 0; + + if (buf) + addr = vb2_dma_contig_plane_paddr(&buf->vb, 0); + mxr_reg_graph_buffer(layer->mdev, layer->idx, addr); +} + +static void mxr_graph_stream_set(struct mxr_layer *layer, int en) +{ + mxr_reg_graph_layer_stream(layer->mdev, layer->idx, en); +} + +static void mxr_graph_format_set(struct mxr_layer *layer) +{ + mxr_reg_graph_format(layer->mdev, layer->idx, + layer->fmt, &layer->geo); +} + +static void mxr_graph_fix_geometry(struct mxr_layer *layer) +{ + struct mxr_geometry *geo = &layer->geo; + + /* limit to boundary size */ + geo->src.full_width = clamp_val(geo->src.full_width, 1, 32767); + geo->src.full_height = clamp_val(geo->src.full_height, 1, 2047); + geo->src.width = clamp_val(geo->src.width, 1, geo->src.full_width); + geo->src.width = min(geo->src.width, 2047U); + /* not possible to crop of Y axis */ + geo->src.y_offset = min(geo->src.y_offset, geo->src.full_height - 1); + geo->src.height = geo->src.full_height - geo->src.y_offset; + /* limitting offset */ + geo->src.x_offset = min(geo->src.x_offset, + geo->src.full_width - geo->src.width); + + /* setting position in output */ + geo->dst.width = min(geo->dst.width, geo->dst.full_width); + geo->dst.height = min(geo->dst.height, geo->dst.full_height); + + /* Mixer supports only 1x and 2x scaling */ + if (geo->dst.width >= 2 * geo->src.width) { + geo->x_ratio = 1; + geo->dst.width = 2 * geo->src.width; + } else { + geo->x_ratio = 0; + geo->dst.width = geo->src.width; + } + + if (geo->dst.height >= 2 * geo->src.height) { + geo->y_ratio = 1; + geo->dst.height = 2 * geo->src.height; + } else { + geo->y_ratio = 0; + geo->dst.height = geo->src.height; + } + + geo->dst.x_offset = min(geo->dst.x_offset, + geo->dst.full_width - geo->dst.width); + geo->dst.y_offset = min(geo->dst.y_offset, + geo->dst.full_height - geo->dst.height); +} + +/* PUBLIC API */ + +struct mxr_layer *mxr_graph_layer_create(struct mxr_device *mdev, int idx) +{ + struct mxr_layer *layer; + int ret; + struct mxr_layer_ops ops = { + .release = mxr_graph_layer_release, + .buffer_set = mxr_graph_buffer_set, + .stream_set = mxr_graph_stream_set, + .format_set = mxr_graph_format_set, + .fix_geometry = mxr_graph_fix_geometry, + }; + char name[32]; + + sprintf(name, "graph%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_graph_format; + layer->fmt_array_size = ARRAY_SIZE(mxr_graph_format); + + ret = mxr_base_layer_register(layer); + if (ret) + goto fail_layer; + + return layer; + +fail_layer: + mxr_base_layer_release(layer); + +fail: + return NULL; +} + |