417 lines
11 KiB
C
417 lines
11 KiB
C
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/*
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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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* Controls
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*/
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enum wpf_flip_ctrl {
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WPF_CTRL_VFLIP = 0,
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WPF_CTRL_HFLIP = 1,
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WPF_CTRL_MAX,
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};
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static int vsp1_wpf_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct vsp1_rwpf *wpf =
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container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
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unsigned int i;
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u32 flip = 0;
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switch (ctrl->id) {
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case V4L2_CID_HFLIP:
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case V4L2_CID_VFLIP:
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for (i = 0; i < WPF_CTRL_MAX; ++i) {
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if (wpf->flip.ctrls[i])
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flip |= wpf->flip.ctrls[i]->val ? BIT(i) : 0;
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}
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spin_lock_irq(&wpf->flip.lock);
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wpf->flip.pending = flip;
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spin_unlock_irq(&wpf->flip.lock);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct v4l2_ctrl_ops vsp1_wpf_ctrl_ops = {
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.s_ctrl = vsp1_wpf_s_ctrl,
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};
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static int wpf_init_controls(struct vsp1_rwpf *wpf)
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{
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struct vsp1_device *vsp1 = wpf->entity.vsp1;
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unsigned int num_flip_ctrls;
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spin_lock_init(&wpf->flip.lock);
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if (wpf->entity.index != 0) {
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/* Only WPF0 supports flipping. */
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num_flip_ctrls = 0;
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} else if (vsp1->info->features & VSP1_HAS_WPF_HFLIP) {
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/* When horizontal flip is supported the WPF implements two
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* controls (horizontal flip and vertical flip).
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*/
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num_flip_ctrls = 2;
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} else if (vsp1->info->features & VSP1_HAS_WPF_VFLIP) {
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/* When only vertical flip is supported the WPF implements a
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* single control (vertical flip).
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*/
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num_flip_ctrls = 1;
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} else {
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/* Otherwise flipping is not supported. */
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num_flip_ctrls = 0;
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}
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vsp1_rwpf_init_ctrls(wpf, num_flip_ctrls);
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if (num_flip_ctrls >= 1) {
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wpf->flip.ctrls[WPF_CTRL_VFLIP] =
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v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
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V4L2_CID_VFLIP, 0, 1, 1, 0);
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}
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if (num_flip_ctrls == 2) {
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wpf->flip.ctrls[WPF_CTRL_HFLIP] =
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v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
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V4L2_CID_HFLIP, 0, 1, 1, 0);
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v4l2_ctrl_cluster(2, wpf->flip.ctrls);
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}
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if (wpf->ctrls.error) {
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dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
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wpf->entity.index);
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return wpf->ctrls.error;
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}
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return 0;
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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_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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enum vsp1_entity_params params)
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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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unsigned int i;
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u32 outfmt = 0;
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u32 srcrpf = 0;
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if (params == VSP1_ENTITY_PARAMS_RUNTIME) {
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const unsigned int mask = BIT(WPF_CTRL_VFLIP)
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| BIT(WPF_CTRL_HFLIP);
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unsigned long flags;
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spin_lock_irqsave(&wpf->flip.lock, flags);
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wpf->flip.active = (wpf->flip.active & ~mask)
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| (wpf->flip.pending & mask);
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spin_unlock_irqrestore(&wpf->flip.lock, flags);
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outfmt = (wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT) | wpf->outfmt;
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if (wpf->flip.active & BIT(WPF_CTRL_VFLIP))
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outfmt |= VI6_WPF_OUTFMT_FLP;
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if (wpf->flip.active & BIT(WPF_CTRL_HFLIP))
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outfmt |= VI6_WPF_OUTFMT_HFLP;
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vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, outfmt);
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return;
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}
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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 (params == VSP1_ENTITY_PARAMS_PARTITION) {
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const struct v4l2_pix_format_mplane *format = &wpf->format;
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struct vsp1_rwpf_memory mem = wpf->mem;
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unsigned int flip = wpf->flip.active;
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unsigned int width = source_format->width;
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unsigned int height = source_format->height;
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unsigned int offset;
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/*
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* Cropping. The partition algorithm can split the image into
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* multiple slices.
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*/
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if (pipe->partitions > 1)
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width = pipe->partition.width;
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vsp1_wpf_write(wpf, dl, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
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(0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
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(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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(0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
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(height << VI6_WPF_SZCLIP_SIZE_SHIFT));
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if (pipe->lif)
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return;
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/*
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* Update the memory offsets based on flipping configuration.
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* The destination addresses point to the locations where the
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* VSP starts writing to memory, which can be different corners
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* of the image depending on vertical flipping.
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*/
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if (pipe->partitions > 1) {
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const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
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/*
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* Horizontal flipping is handled through a line buffer
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* and doesn't modify the start address, but still needs
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* to be handled when image partitioning is in effect to
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* order the partitions correctly.
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*/
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if (flip & BIT(WPF_CTRL_HFLIP))
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offset = format->width - pipe->partition.left
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- pipe->partition.width;
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else
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offset = pipe->partition.left;
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mem.addr[0] += offset * fmtinfo->bpp[0] / 8;
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if (format->num_planes > 1) {
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mem.addr[1] += offset / fmtinfo->hsub
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* fmtinfo->bpp[1] / 8;
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mem.addr[2] += offset / fmtinfo->hsub
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* fmtinfo->bpp[2] / 8;
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}
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}
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if (flip & BIT(WPF_CTRL_VFLIP)) {
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mem.addr[0] += (format->height - 1)
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* format->plane_fmt[0].bytesperline;
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if (format->num_planes > 1) {
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offset = (format->height / wpf->fmtinfo->vsub - 1)
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* format->plane_fmt[1].bytesperline;
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mem.addr[1] += offset;
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mem.addr[2] += offset;
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}
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}
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_Y, mem.addr[0]);
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C0, mem.addr[1]);
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vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C1, mem.addr[2]);
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return;
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}
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/* Format */
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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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if (vsp1->info->features & VSP1_HAS_WPF_HFLIP &&
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wpf->entity.index == 0)
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vsp1_wpf_write(wpf, dl, VI6_WPF_ROT_CTRL,
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VI6_WPF_ROT_CTRL_LN16 |
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(256 << VI6_WPF_ROT_CTRL_LMEM_WD_SHIFT));
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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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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);
|
||
|
|
vsp1_dl_list_write(dl, VI6_WPF_IRQ_ENB(wpf->entity.index),
|
||
|
|
VI6_WFP_IRQ_ENB_DFEE);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct vsp1_entity_operations wpf_entity_ops = {
|
||
|
|
.destroy = vsp1_wpf_destroy,
|
||
|
|
.configure = wpf_configure,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* Initialization and Cleanup
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
|
||
|
|
{
|
||
|
|
struct vsp1_rwpf *wpf;
|
||
|
|
char name[6];
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
|
||
|
|
if (wpf == NULL)
|
||
|
|
return ERR_PTR(-ENOMEM);
|
||
|
|
|
||
|
|
if (vsp1->info->gen == 2) {
|
||
|
|
wpf->max_width = WPF_GEN2_MAX_WIDTH;
|
||
|
|
wpf->max_height = WPF_GEN2_MAX_HEIGHT;
|
||
|
|
} else {
|
||
|
|
wpf->max_width = WPF_GEN3_MAX_WIDTH;
|
||
|
|
wpf->max_height = WPF_GEN3_MAX_HEIGHT;
|
||
|
|
}
|
||
|
|
|
||
|
|
wpf->entity.ops = &wpf_entity_ops;
|
||
|
|
wpf->entity.type = VSP1_ENTITY_WPF;
|
||
|
|
wpf->entity.index = index;
|
||
|
|
|
||
|
|
sprintf(name, "wpf.%u", index);
|
||
|
|
ret = vsp1_entity_init(vsp1, &wpf->entity, name, 2, &wpf_ops,
|
||
|
|
MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER);
|
||
|
|
if (ret < 0)
|
||
|
|
return ERR_PTR(ret);
|
||
|
|
|
||
|
|
/* Initialize the display list manager. */
|
||
|
|
wpf->dlm = vsp1_dlm_create(vsp1, index, 64);
|
||
|
|
if (!wpf->dlm) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Initialize the control handler. */
|
||
|
|
ret = wpf_init_controls(wpf);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
|
||
|
|
index);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
v4l2_ctrl_handler_setup(&wpf->ctrls);
|
||
|
|
|
||
|
|
return wpf;
|
||
|
|
|
||
|
|
error:
|
||
|
|
vsp1_entity_destroy(&wpf->entity);
|
||
|
|
return ERR_PTR(ret);
|
||
|
|
}
|