mirror of https://gitee.com/openkylin/linux.git
245 lines
6.6 KiB
C
245 lines
6.6 KiB
C
/*
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* vsp1_wpf.c -- R-Car VSP1 Write Pixel Formatter
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*
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/device.h>
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#include <media/v4l2-subdev.h>
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#include "vsp1.h"
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#include "vsp1_dl.h"
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#include "vsp1_pipe.h"
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#include "vsp1_rwpf.h"
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#include "vsp1_video.h"
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#define WPF_GEN2_MAX_WIDTH 2048U
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#define WPF_GEN2_MAX_HEIGHT 2048U
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#define WPF_GEN3_MAX_WIDTH 8190U
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#define WPF_GEN3_MAX_HEIGHT 8190U
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/* -----------------------------------------------------------------------------
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* Device Access
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*/
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static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf,
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struct vsp1_dl_list *dl, u32 reg, u32 data)
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{
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vsp1_dl_list_write(dl, reg + wpf->entity.index * VI6_WPF_OFFSET, data);
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Core Operations
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*/
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static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
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{
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struct vsp1_rwpf *wpf = to_rwpf(subdev);
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struct vsp1_device *vsp1 = wpf->entity.vsp1;
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if (enable)
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return 0;
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/* Write to registers directly when stopping the stream as there will be
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* no pipeline run to apply the display list.
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*/
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vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
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vsp1_write(vsp1, wpf->entity.index * VI6_WPF_OFFSET +
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VI6_WPF_SRCRPF, 0);
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Operations
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*/
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static const struct v4l2_subdev_video_ops wpf_video_ops = {
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.s_stream = wpf_s_stream,
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};
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static const struct v4l2_subdev_ops wpf_ops = {
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.video = &wpf_video_ops,
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.pad = &vsp1_rwpf_pad_ops,
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};
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/* -----------------------------------------------------------------------------
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* VSP1 Entity Operations
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*/
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static void vsp1_wpf_destroy(struct vsp1_entity *entity)
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{
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struct vsp1_rwpf *wpf = entity_to_rwpf(entity);
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vsp1_dlm_destroy(wpf->dlm);
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}
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static void wpf_set_memory(struct vsp1_entity *entity, struct vsp1_dl_list *dl)
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{
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struct vsp1_rwpf *wpf = entity_to_rwpf(entity);
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_Y, wpf->mem.addr[0]);
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C0, wpf->mem.addr[1]);
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C1, wpf->mem.addr[2]);
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}
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static void wpf_configure(struct vsp1_entity *entity,
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struct vsp1_pipeline *pipe,
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struct vsp1_dl_list *dl)
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{
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struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
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struct vsp1_device *vsp1 = wpf->entity.vsp1;
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const struct v4l2_mbus_framefmt *source_format;
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const struct v4l2_mbus_framefmt *sink_format;
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const struct v4l2_rect *crop;
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unsigned int i;
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u32 outfmt = 0;
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u32 srcrpf = 0;
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/* Cropping */
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crop = vsp1_rwpf_get_crop(wpf, wpf->entity.config);
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vsp1_wpf_write(wpf, dl, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
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(crop->left << VI6_WPF_SZCLIP_OFST_SHIFT) |
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(crop->width << VI6_WPF_SZCLIP_SIZE_SHIFT));
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vsp1_wpf_write(wpf, dl, VI6_WPF_VSZCLIP, VI6_WPF_SZCLIP_EN |
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(crop->top << VI6_WPF_SZCLIP_OFST_SHIFT) |
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(crop->height << VI6_WPF_SZCLIP_SIZE_SHIFT));
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/* Format */
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sink_format = vsp1_entity_get_pad_format(&wpf->entity,
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wpf->entity.config,
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RWPF_PAD_SINK);
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source_format = vsp1_entity_get_pad_format(&wpf->entity,
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wpf->entity.config,
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RWPF_PAD_SOURCE);
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if (!pipe->lif) {
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const struct v4l2_pix_format_mplane *format = &wpf->format;
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const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
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outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;
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if (fmtinfo->alpha)
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outfmt |= VI6_WPF_OUTFMT_PXA;
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if (fmtinfo->swap_yc)
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outfmt |= VI6_WPF_OUTFMT_SPYCS;
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if (fmtinfo->swap_uv)
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outfmt |= VI6_WPF_OUTFMT_SPUVS;
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/* Destination stride and byte swapping. */
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_Y,
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format->plane_fmt[0].bytesperline);
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if (format->num_planes > 1)
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_C,
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format->plane_fmt[1].bytesperline);
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSWAP, fmtinfo->swap);
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}
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if (sink_format->code != source_format->code)
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outfmt |= VI6_WPF_OUTFMT_CSC;
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outfmt |= wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT;
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vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, outfmt);
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vsp1_dl_list_write(dl, VI6_DPR_WPF_FPORCH(wpf->entity.index),
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VI6_DPR_WPF_FPORCH_FP_WPFN);
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vsp1_dl_list_write(dl, VI6_WPF_WRBCK_CTRL, 0);
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/* Sources. If the pipeline has a single input and BRU is not used,
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* configure it as the master layer. Otherwise configure all
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* inputs as sub-layers and select the virtual RPF as the master
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* layer.
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*/
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for (i = 0; i < vsp1->info->rpf_count; ++i) {
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struct vsp1_rwpf *input = pipe->inputs[i];
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if (!input)
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continue;
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srcrpf |= (!pipe->bru && pipe->num_inputs == 1)
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? VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index)
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: VI6_WPF_SRCRPF_RPF_ACT_SUB(input->entity.index);
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}
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if (pipe->bru || pipe->num_inputs > 1)
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srcrpf |= VI6_WPF_SRCRPF_VIRACT_MST;
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vsp1_wpf_write(wpf, dl, VI6_WPF_SRCRPF, srcrpf);
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/* Enable interrupts */
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vsp1_dl_list_write(dl, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
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vsp1_dl_list_write(dl, VI6_WPF_IRQ_ENB(wpf->entity.index),
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VI6_WFP_IRQ_ENB_FREE);
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}
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static const struct vsp1_entity_operations wpf_entity_ops = {
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.destroy = vsp1_wpf_destroy,
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.set_memory = wpf_set_memory,
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.configure = wpf_configure,
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};
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/* -----------------------------------------------------------------------------
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* Initialization and Cleanup
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*/
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struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
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{
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struct vsp1_rwpf *wpf;
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char name[6];
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int ret;
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wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
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if (wpf == NULL)
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return ERR_PTR(-ENOMEM);
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if (vsp1->info->gen == 2) {
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wpf->max_width = WPF_GEN2_MAX_WIDTH;
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wpf->max_height = WPF_GEN2_MAX_HEIGHT;
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} else {
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wpf->max_width = WPF_GEN3_MAX_WIDTH;
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wpf->max_height = WPF_GEN3_MAX_HEIGHT;
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}
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wpf->entity.ops = &wpf_entity_ops;
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wpf->entity.type = VSP1_ENTITY_WPF;
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wpf->entity.index = index;
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sprintf(name, "wpf.%u", index);
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ret = vsp1_entity_init(vsp1, &wpf->entity, name, 2, &wpf_ops,
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MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER);
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if (ret < 0)
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return ERR_PTR(ret);
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/* Initialize the display list manager. */
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wpf->dlm = vsp1_dlm_create(vsp1, index, 4);
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if (!wpf->dlm) {
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ret = -ENOMEM;
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goto error;
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}
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/* Initialize the control handler. */
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ret = vsp1_rwpf_init_ctrls(wpf);
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if (ret < 0) {
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dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
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index);
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goto error;
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}
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return wpf;
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error:
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vsp1_entity_destroy(&wpf->entity);
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return ERR_PTR(ret);
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}
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