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Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option [no]_[pad]_[ctrl] any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 176 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154040.652910950@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
78 lines
2 KiB
C
78 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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au0828-vbi.c - VBI driver for au0828
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Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
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This work was sponsored by GetWellNetwork Inc.
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*/
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#include "au0828.h"
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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/* ------------------------------------------------------------------ */
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static int vbi_queue_setup(struct vb2_queue *vq,
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unsigned int *nbuffers, unsigned int *nplanes,
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unsigned int sizes[], struct device *alloc_devs[])
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{
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struct au0828_dev *dev = vb2_get_drv_priv(vq);
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unsigned long size = dev->vbi_width * dev->vbi_height * 2;
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if (*nplanes)
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return sizes[0] < size ? -EINVAL : 0;
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*nplanes = 1;
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sizes[0] = size;
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return 0;
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}
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static int vbi_buffer_prepare(struct vb2_buffer *vb)
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{
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struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
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unsigned long size;
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size = dev->vbi_width * dev->vbi_height * 2;
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if (vb2_plane_size(vb, 0) < size) {
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pr_err("%s data will not fit into plane (%lu < %lu)\n",
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__func__, vb2_plane_size(vb, 0), size);
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return -EINVAL;
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}
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vb2_set_plane_payload(vb, 0, size);
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return 0;
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}
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static void
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vbi_buffer_queue(struct vb2_buffer *vb)
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{
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struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct au0828_buffer *buf =
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container_of(vbuf, struct au0828_buffer, vb);
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struct au0828_dmaqueue *vbiq = &dev->vbiq;
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unsigned long flags = 0;
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buf->mem = vb2_plane_vaddr(vb, 0);
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buf->length = vb2_plane_size(vb, 0);
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spin_lock_irqsave(&dev->slock, flags);
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list_add_tail(&buf->list, &vbiq->active);
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spin_unlock_irqrestore(&dev->slock, flags);
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}
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const struct vb2_ops au0828_vbi_qops = {
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.queue_setup = vbi_queue_setup,
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.buf_prepare = vbi_buffer_prepare,
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.buf_queue = vbi_buffer_queue,
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.start_streaming = au0828_start_analog_streaming,
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.stop_streaming = au0828_stop_vbi_streaming,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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};
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