Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)    au0828-vbi.c - VBI driver for au0828
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)    Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)    This work was sponsored by GetWellNetwork Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "au0828.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* ------------------------------------------------------------------ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static int vbi_queue_setup(struct vb2_queue *vq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 			   unsigned int *nbuffers, unsigned int *nplanes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 			   unsigned int sizes[], struct device *alloc_devs[])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	struct au0828_dev *dev = vb2_get_drv_priv(vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	unsigned long size = dev->vbi_width * dev->vbi_height * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	if (*nplanes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		return sizes[0] < size ? -EINVAL : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	*nplanes = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	sizes[0] = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int vbi_buffer_prepare(struct vb2_buffer *vb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	unsigned long size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	size = dev->vbi_width * dev->vbi_height * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	if (vb2_plane_size(vb, 0) < size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		pr_err("%s data will not fit into plane (%lu < %lu)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			__func__, vb2_plane_size(vb, 0), size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	vb2_set_plane_payload(vb, 0, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) vbi_buffer_queue(struct vb2_buffer *vb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	struct au0828_buffer *buf =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 			container_of(vbuf, struct au0828_buffer, vb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	struct au0828_dmaqueue *vbiq = &dev->vbiq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	unsigned long flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	buf->mem = vb2_plane_vaddr(vb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	buf->length = vb2_plane_size(vb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	spin_lock_irqsave(&dev->slock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	list_add_tail(&buf->list, &vbiq->active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	spin_unlock_irqrestore(&dev->slock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) const struct vb2_ops au0828_vbi_qops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	.queue_setup     = vbi_queue_setup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	.buf_prepare     = vbi_buffer_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	.buf_queue       = vbi_buffer_queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	.start_streaming = au0828_start_analog_streaming,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	.stop_streaming  = au0828_stop_vbi_streaming,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	.wait_prepare    = vb2_ops_wait_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	.wait_finish     = vb2_ops_wait_finish,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) };