547 lines
15 KiB
C
547 lines
15 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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};
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static int vsp1_wpf_set_rotation(struct vsp1_rwpf *wpf, unsigned int rotation)
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{
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struct vsp1_video *video = wpf->video;
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struct v4l2_mbus_framefmt *sink_format;
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struct v4l2_mbus_framefmt *source_format;
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bool rotate;
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int ret = 0;
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/*
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* Only consider the 0°/180° from/to 90°/270° modifications, the rest
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* is taken care of by the flipping configuration.
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*/
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rotate = rotation == 90 || rotation == 270;
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if (rotate == wpf->flip.rotate)
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return 0;
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/* Changing rotation isn't allowed when buffers are allocated. */
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mutex_lock(&video->lock);
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if (vb2_is_busy(&video->queue)) {
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ret = -EBUSY;
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goto done;
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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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mutex_lock(&wpf->entity.lock);
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if (rotate) {
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source_format->width = sink_format->height;
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source_format->height = sink_format->width;
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} else {
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source_format->width = sink_format->width;
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source_format->height = sink_format->height;
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}
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wpf->flip.rotate = rotate;
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mutex_unlock(&wpf->entity.lock);
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done:
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mutex_unlock(&video->lock);
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return ret;
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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 rotation;
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u32 flip = 0;
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int ret;
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/* Update the rotation. */
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rotation = wpf->flip.ctrls.rotate ? wpf->flip.ctrls.rotate->val : 0;
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ret = vsp1_wpf_set_rotation(wpf, rotation);
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if (ret < 0)
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return ret;
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/*
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* Compute the flip value resulting from all three controls, with
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* rotation by 180° flipping the image in both directions. Store the
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* result in the pending flip field for the next frame that will be
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* processed.
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*/
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if (wpf->flip.ctrls.vflip->val)
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flip |= BIT(WPF_CTRL_VFLIP);
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if (wpf->flip.ctrls.hflip && wpf->flip.ctrls.hflip->val)
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flip |= BIT(WPF_CTRL_HFLIP);
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if (rotation == 180 || rotation == 270)
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flip ^= BIT(WPF_CTRL_VFLIP) | BIT(WPF_CTRL_HFLIP);
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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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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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/*
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* When horizontal flip is supported the WPF implements three
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* controls (horizontal flip, vertical flip and rotation).
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*/
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num_flip_ctrls = 3;
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} else if (vsp1->info->features & VSP1_HAS_WPF_VFLIP) {
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/*
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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.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 == 3) {
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wpf->flip.ctrls.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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wpf->flip.ctrls.rotate =
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v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
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V4L2_CID_ROTATE, 0, 270, 90, 0);
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v4l2_ctrl_cluster(3, &wpf->flip.ctrls.vflip);
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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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/*
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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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const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
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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 = sink_format->width;
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unsigned int height = sink_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->wpf.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 any corner of the
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* image depending on the combination of flipping and rotation.
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*/
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/*
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* First take the partition left coordinate into account.
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* Compute the offset to order the partitions correctly on the
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* output based on whether flipping is enabled. Consider
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* horizontal flipping when rotation is disabled but vertical
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* flipping when rotation is enabled, as rotating the image
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* switches the horizontal and vertical directions. The offset
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* is applied horizontally or vertically accordingly.
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*/
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if (flip & BIT(WPF_CTRL_HFLIP) && !wpf->flip.rotate)
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offset = format->width - pipe->partition->wpf.left
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- pipe->partition->wpf.width;
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else if (flip & BIT(WPF_CTRL_VFLIP) && wpf->flip.rotate)
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offset = format->height - pipe->partition->wpf.left
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- pipe->partition->wpf.width;
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else
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offset = pipe->partition->wpf.left;
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for (i = 0; i < format->num_planes; ++i) {
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unsigned int hsub = i > 0 ? fmtinfo->hsub : 1;
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unsigned int vsub = i > 0 ? fmtinfo->vsub : 1;
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if (wpf->flip.rotate)
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mem.addr[i] += offset / vsub
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* format->plane_fmt[i].bytesperline;
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else
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mem.addr[i] += offset / hsub
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* fmtinfo->bpp[i] / 8;
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}
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if (flip & BIT(WPF_CTRL_VFLIP)) {
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/*
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* When rotating the output (after rotation) image
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* height is equal to the partition width (before
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* rotation). Otherwise it is equal to the output
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* image height.
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*/
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if (wpf->flip.rotate)
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height = pipe->partition->wpf.width;
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else
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height = format->height;
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mem.addr[0] += (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 = (height / fmtinfo->vsub - 1)
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* format->plane_fmt[1].bytesperline;
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mem.addr[1] += offset;
|
||
|
|
mem.addr[2] += offset;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (wpf->flip.rotate && !(flip & BIT(WPF_CTRL_HFLIP))) {
|
||
|
|
unsigned int hoffset = max(0, (int)format->width - 16);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compute the output coordinate. The partition
|
||
|
|
* horizontal (left) offset becomes a vertical offset.
|
||
|
|
*/
|
||
|
|
for (i = 0; i < format->num_planes; ++i) {
|
||
|
|
unsigned int hsub = i > 0 ? fmtinfo->hsub : 1;
|
||
|
|
|
||
|
|
mem.addr[i] += hoffset / hsub
|
||
|
|
* fmtinfo->bpp[i] / 8;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* On Gen3 hardware the SPUVS bit has no effect on 3-planar
|
||
|
|
* formats. Swap the U and V planes manually in that case.
|
||
|
|
*/
|
||
|
|
if (vsp1->info->gen == 3 && format->num_planes == 3 &&
|
||
|
|
fmtinfo->swap_uv)
|
||
|
|
swap(mem.addr[1], mem.addr[2]);
|
||
|
|
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_Y, mem.addr[0]);
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C0, mem.addr[1]);
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C1, mem.addr[2]);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Format */
|
||
|
|
if (!pipe->lif) {
|
||
|
|
const struct v4l2_pix_format_mplane *format = &wpf->format;
|
||
|
|
const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
|
||
|
|
|
||
|
|
outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;
|
||
|
|
|
||
|
|
if (wpf->flip.rotate)
|
||
|
|
outfmt |= VI6_WPF_OUTFMT_ROT;
|
||
|
|
|
||
|
|
if (fmtinfo->alpha)
|
||
|
|
outfmt |= VI6_WPF_OUTFMT_PXA;
|
||
|
|
if (fmtinfo->swap_yc)
|
||
|
|
outfmt |= VI6_WPF_OUTFMT_SPYCS;
|
||
|
|
if (fmtinfo->swap_uv)
|
||
|
|
outfmt |= VI6_WPF_OUTFMT_SPUVS;
|
||
|
|
|
||
|
|
/* Destination stride and byte swapping. */
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_Y,
|
||
|
|
format->plane_fmt[0].bytesperline);
|
||
|
|
if (format->num_planes > 1)
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_C,
|
||
|
|
format->plane_fmt[1].bytesperline);
|
||
|
|
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_DSWAP, fmtinfo->swap);
|
||
|
|
|
||
|
|
if (vsp1->info->features & VSP1_HAS_WPF_HFLIP &&
|
||
|
|
wpf->entity.index == 0)
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_ROT_CTRL,
|
||
|
|
VI6_WPF_ROT_CTRL_LN16 |
|
||
|
|
(256 << VI6_WPF_ROT_CTRL_LMEM_WD_SHIFT));
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sink_format->code != source_format->code)
|
||
|
|
outfmt |= VI6_WPF_OUTFMT_CSC;
|
||
|
|
|
||
|
|
wpf->outfmt = outfmt;
|
||
|
|
|
||
|
|
vsp1_dl_list_write(dl, VI6_DPR_WPF_FPORCH(wpf->entity.index),
|
||
|
|
VI6_DPR_WPF_FPORCH_FP_WPFN);
|
||
|
|
|
||
|
|
vsp1_dl_list_write(dl, VI6_WPF_WRBCK_CTRL, 0);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Sources. If the pipeline has a single input and BRU is not used,
|
||
|
|
* configure it as the master layer. Otherwise configure all
|
||
|
|
* inputs as sub-layers and select the virtual RPF as the master
|
||
|
|
* layer.
|
||
|
|
*/
|
||
|
|
for (i = 0; i < vsp1->info->rpf_count; ++i) {
|
||
|
|
struct vsp1_rwpf *input = pipe->inputs[i];
|
||
|
|
|
||
|
|
if (!input)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
srcrpf |= (!pipe->bru && pipe->num_inputs == 1)
|
||
|
|
? VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index)
|
||
|
|
: VI6_WPF_SRCRPF_RPF_ACT_SUB(input->entity.index);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pipe->bru || pipe->num_inputs > 1)
|
||
|
|
srcrpf |= pipe->bru->type == VSP1_ENTITY_BRU
|
||
|
|
? VI6_WPF_SRCRPF_VIRACT_MST
|
||
|
|
: VI6_WPF_SRCRPF_VIRACT2_MST;
|
||
|
|
|
||
|
|
vsp1_wpf_write(wpf, dl, VI6_WPF_SRCRPF, srcrpf);
|
||
|
|
|
||
|
|
/* Enable interrupts */
|
||
|
|
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 unsigned int wpf_max_width(struct vsp1_entity *entity,
|
||
|
|
struct vsp1_pipeline *pipe)
|
||
|
|
{
|
||
|
|
struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
|
||
|
|
|
||
|
|
return wpf->flip.rotate ? 256 : wpf->max_width;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void wpf_partition(struct vsp1_entity *entity,
|
||
|
|
struct vsp1_pipeline *pipe,
|
||
|
|
struct vsp1_partition *partition,
|
||
|
|
unsigned int partition_idx,
|
||
|
|
struct vsp1_partition_window *window)
|
||
|
|
{
|
||
|
|
partition->wpf = *window;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct vsp1_entity_operations wpf_entity_ops = {
|
||
|
|
.destroy = vsp1_wpf_destroy,
|
||
|
|
.configure = wpf_configure,
|
||
|
|
.max_width = wpf_max_width,
|
||
|
|
.partition = wpf_partition,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* 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);
|
||
|
|
}
|