// SPDX-License-Identifier: GPL-2.0+
|
/*
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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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#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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static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf,
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struct vsp1_dl_body *dlb, u32 reg, u32 data)
|
{
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vsp1_dl_body_write(dlb, 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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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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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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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_feature(vsp1, 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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num_flip_ctrls = 3;
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} else if (vsp1_feature(vsp1, 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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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 int wpf_configure_writeback_chain(struct vsp1_rwpf *wpf,
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struct vsp1_dl_list *dl)
|
{
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unsigned int index = wpf->entity.index;
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struct vsp1_dl_list *dl_next;
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struct vsp1_dl_body *dlb;
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dl_next = vsp1_dl_list_get(wpf->dlm);
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if (!dl_next) {
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dev_err(wpf->entity.vsp1->dev,
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"Failed to obtain a dl list, disabling writeback\n");
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return -ENOMEM;
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}
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dlb = vsp1_dl_list_get_body0(dl_next);
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vsp1_dl_body_write(dlb, VI6_WPF_WRBCK_CTRL(index), 0);
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vsp1_dl_list_add_chain(dl, dl_next);
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return 0;
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}
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static void wpf_configure_stream(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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struct vsp1_dl_body *dlb)
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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 index = wpf->entity.index;
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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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int ret;
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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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/* Format */
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if (!pipe->lif || wpf->writeback) {
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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 (wpf->flip.rotate)
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outfmt |= VI6_WPF_OUTFMT_ROT;
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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, dlb, 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, dlb, VI6_WPF_DSTM_STRIDE_C,
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format->plane_fmt[1].bytesperline);
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vsp1_wpf_write(wpf, dlb, VI6_WPF_DSWAP, fmtinfo->swap);
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if (vsp1_feature(vsp1, VSP1_HAS_WPF_HFLIP) && index == 0)
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vsp1_wpf_write(wpf, dlb, 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_body_write(dlb, VI6_DPR_WPF_FPORCH(index),
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VI6_DPR_WPF_FPORCH_FP_WPFN);
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/*
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* Sources. If the pipeline has a single input and BRx is not used,
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* configure it as the master layer. Otherwise configure all
|
* 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->brx && 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->brx)
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srcrpf |= pipe->brx->type == VSP1_ENTITY_BRU
|
? VI6_WPF_SRCRPF_VIRACT_MST
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: VI6_WPF_SRCRPF_VIRACT2_MST;
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vsp1_wpf_write(wpf, dlb, VI6_WPF_SRCRPF, srcrpf);
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/* Enable interrupts. */
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vsp1_dl_body_write(dlb, VI6_WPF_IRQ_STA(index), 0);
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vsp1_dl_body_write(dlb, VI6_WPF_IRQ_ENB(index),
|
VI6_WFP_IRQ_ENB_DFEE);
|
|
/*
|
* Configure writeback for display pipelines (the wpf writeback flag is
|
* never set for memory-to-memory pipelines). Start by adding a chained
|
* display list to disable writeback after a single frame, and process
|
* to enable writeback. If the display list allocation fails don't
|
* enable writeback as we wouldn't be able to safely disable it,
|
* resulting in possible memory corruption.
|
*/
|
if (wpf->writeback) {
|
ret = wpf_configure_writeback_chain(wpf, dl);
|
if (ret < 0)
|
wpf->writeback = false;
|
}
|
|
vsp1_dl_body_write(dlb, VI6_WPF_WRBCK_CTRL(index),
|
wpf->writeback ? VI6_WPF_WRBCK_CTRL_WBMD : 0);
|
}
|
|
static void wpf_configure_frame(struct vsp1_entity *entity,
|
struct vsp1_pipeline *pipe,
|
struct vsp1_dl_list *dl,
|
struct vsp1_dl_body *dlb)
|
{
|
const unsigned int mask = BIT(WPF_CTRL_VFLIP)
|
| BIT(WPF_CTRL_HFLIP);
|
struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
|
unsigned long flags;
|
u32 outfmt;
|
|
spin_lock_irqsave(&wpf->flip.lock, flags);
|
wpf->flip.active = (wpf->flip.active & ~mask)
|
| (wpf->flip.pending & mask);
|
spin_unlock_irqrestore(&wpf->flip.lock, flags);
|
|
outfmt = (wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT) | wpf->outfmt;
|
|
if (wpf->flip.active & BIT(WPF_CTRL_VFLIP))
|
outfmt |= VI6_WPF_OUTFMT_FLP;
|
if (wpf->flip.active & BIT(WPF_CTRL_HFLIP))
|
outfmt |= VI6_WPF_OUTFMT_HFLP;
|
|
vsp1_wpf_write(wpf, dlb, VI6_WPF_OUTFMT, outfmt);
|
}
|
|
static void wpf_configure_partition(struct vsp1_entity *entity,
|
struct vsp1_pipeline *pipe,
|
struct vsp1_dl_list *dl,
|
struct vsp1_dl_body *dlb)
|
{
|
struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
|
struct vsp1_device *vsp1 = wpf->entity.vsp1;
|
struct vsp1_rwpf_memory mem = wpf->mem;
|
const struct v4l2_mbus_framefmt *sink_format;
|
const struct v4l2_pix_format_mplane *format = &wpf->format;
|
const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
|
unsigned int width;
|
unsigned int height;
|
unsigned int left;
|
unsigned int offset;
|
unsigned int flip;
|
unsigned int i;
|
|
sink_format = vsp1_entity_get_pad_format(&wpf->entity,
|
wpf->entity.config,
|
RWPF_PAD_SINK);
|
width = sink_format->width;
|
height = sink_format->height;
|
left = 0;
|
|
/*
|
* Cropping. The partition algorithm can split the image into
|
* multiple slices.
|
*/
|
if (pipe->partitions > 1) {
|
width = pipe->partition->wpf.width;
|
left = pipe->partition->wpf.left;
|
}
|
|
vsp1_wpf_write(wpf, dlb, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
|
(0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
|
(width << VI6_WPF_SZCLIP_SIZE_SHIFT));
|
vsp1_wpf_write(wpf, dlb, VI6_WPF_VSZCLIP, VI6_WPF_SZCLIP_EN |
|
(0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
|
(height << VI6_WPF_SZCLIP_SIZE_SHIFT));
|
|
/*
|
* For display pipelines without writeback enabled there's no memory
|
* address to configure, return now.
|
*/
|
if (pipe->lif && !wpf->writeback)
|
return;
|
|
/*
|
* Update the memory offsets based on flipping configuration.
|
* The destination addresses point to the locations where the
|
* VSP starts writing to memory, which can be any corner of the
|
* image depending on the combination of flipping and rotation.
|
*/
|
|
/*
|
* First take the partition left coordinate into account.
|
* Compute the offset to order the partitions correctly on the
|
* output based on whether flipping is enabled. Consider
|
* horizontal flipping when rotation is disabled but vertical
|
* flipping when rotation is enabled, as rotating the image
|
* switches the horizontal and vertical directions. The offset
|
* is applied horizontally or vertically accordingly.
|
*/
|
flip = wpf->flip.active;
|
|
if (flip & BIT(WPF_CTRL_HFLIP) && !wpf->flip.rotate)
|
offset = format->width - left - width;
|
else if (flip & BIT(WPF_CTRL_VFLIP) && wpf->flip.rotate)
|
offset = format->height - left - width;
|
else
|
offset = left;
|
|
for (i = 0; i < format->num_planes; ++i) {
|
unsigned int hsub = i > 0 ? fmtinfo->hsub : 1;
|
unsigned int vsub = i > 0 ? fmtinfo->vsub : 1;
|
|
if (wpf->flip.rotate)
|
mem.addr[i] += offset / vsub
|
* format->plane_fmt[i].bytesperline;
|
else
|
mem.addr[i] += offset / hsub
|
* fmtinfo->bpp[i] / 8;
|
}
|
|
if (flip & BIT(WPF_CTRL_VFLIP)) {
|
/*
|
* When rotating the output (after rotation) image
|
* height is equal to the partition width (before
|
* rotation). Otherwise it is equal to the output
|
* image height.
|
*/
|
if (wpf->flip.rotate)
|
height = width;
|
else
|
height = format->height;
|
|
mem.addr[0] += (height - 1)
|
* format->plane_fmt[0].bytesperline;
|
|
if (format->num_planes > 1) {
|
offset = (height / fmtinfo->vsub - 1)
|
* format->plane_fmt[1].bytesperline;
|
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, dlb, VI6_WPF_DSTM_ADDR_Y, mem.addr[0]);
|
vsp1_wpf_write(wpf, dlb, VI6_WPF_DSTM_ADDR_C0, mem.addr[1]);
|
vsp1_wpf_write(wpf, dlb, VI6_WPF_DSTM_ADDR_C1, mem.addr[2]);
|
|
/*
|
* Writeback operates in single-shot mode and lasts for a single frame,
|
* reset the writeback flag to false for the next frame.
|
*/
|
wpf->writeback = false;
|
}
|
|
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_stream = wpf_configure_stream,
|
.configure_frame = wpf_configure_frame,
|
.configure_partition = wpf_configure_partition,
|
.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);
|
}
|
