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2024-01-03 2f7c68cb55ecb7331f2381deb497c27155f32faf 
 kernel/drivers/media/usb/cx231xx/cx231xx-vbi.c
....@@ -1,22 +1,10 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23    cx231xx_vbi.c - driver for Conexant Cx23100/101/102 USB video capture devices
34 
45    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
56 	Based on cx88 driver
67 
7
-   This program is free software; you can redistribute it and/or modify
8
-   it under the terms of the GNU General Public License as published by
9
-   the Free Software Foundation; either version 2 of the License, or
10
-   (at your option) any later version.
11
-
12
-   This program is distributed in the hope that it will be useful,
13
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
14
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
-   GNU General Public License for more details.
16
-
17
-   You should have received a copy of the GNU General Public License
18
-   along with this program; if not, write to the Free Software
19
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
208  */
219 
2210 #include "cx231xx.h"
....@@ -165,131 +153,98 @@
165153 	Vbi buf operations
166154    ------------------------------------------------------------------*/
167155 
168
-static int
169
-vbi_buffer_setup(struct videobuf_queue *vq, unsigned int *count,
170
-		 unsigned int *size)
156
+static int vbi_queue_setup(struct vb2_queue *vq,
157
+			   unsigned int *nbuffers, unsigned int *nplanes,
158
+			   unsigned int sizes[], struct device *alloc_devs[])
171159 {
172
-	struct cx231xx_fh *fh = vq->priv_data;
173
-	struct cx231xx *dev = fh->dev;
160
+	struct cx231xx *dev = vb2_get_drv_priv(vq);
174161 	u32 height = 0;
175162 
176163 	height = ((dev->norm & V4L2_STD_625_50) ?
177164 		  PAL_VBI_LINES : NTSC_VBI_LINES);
178165 
179
-	*size = (dev->width * height * 2 * 2);
180
-	if (0 == *count)
181
-		*count = CX231XX_DEF_VBI_BUF;
182
-
183
-	if (*count < CX231XX_MIN_BUF)
184
-		*count = CX231XX_MIN_BUF;
185
-
166
+	*nplanes = 1;
167
+	sizes[0] = (dev->width * height * 2 * 2);
186168 	return 0;
187169 }
188170 
189171 /* This is called *without* dev->slock held; please keep it that way */
190
-static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
172
+static int vbi_buf_prepare(struct vb2_buffer *vb)
191173 {
192
-	struct cx231xx_fh *fh = vq->priv_data;
193
-	struct cx231xx *dev = fh->dev;
194
-	unsigned long flags = 0;
195
-	BUG_ON(in_interrupt());
196
-
197
-	/* We used to wait for the buffer to finish here, but this didn't work
198
-	   because, as we were keeping the state as VIDEOBUF_QUEUED,
199
-	   videobuf_queue_cancel marked it as finished for us.
200
-	   (Also, it could wedge forever if the hardware was misconfigured.)
201
-
202
-	   This should be safe; by the time we get here, the buffer isn't
203
-	   queued anymore. If we ever start marking the buffers as
204
-	   VIDEOBUF_ACTIVE, it won't be, though.
205
-	 */
206
-	spin_lock_irqsave(&dev->vbi_mode.slock, flags);
207
-	if (dev->vbi_mode.bulk_ctl.buf == buf)
208
-		dev->vbi_mode.bulk_ctl.buf = NULL;
209
-	spin_unlock_irqrestore(&dev->vbi_mode.slock, flags);
210
-
211
-	videobuf_vmalloc_free(&buf->vb);
212
-	buf->vb.state = VIDEOBUF_NEEDS_INIT;
213
-}
214
-
215
-static int
216
-vbi_buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
217
-		   enum v4l2_field field)
218
-{
219
-	struct cx231xx_fh *fh = vq->priv_data;
220
-	struct cx231xx_buffer *buf =
221
-	    container_of(vb, struct cx231xx_buffer, vb);
222
-	struct cx231xx *dev = fh->dev;
223
-	int rc = 0, urb_init = 0;
174
+	struct cx231xx *dev = vb2_get_drv_priv(vb->vb2_queue);
224175 	u32 height = 0;
176
+	u32 size;
225177 
226178 	height = ((dev->norm & V4L2_STD_625_50) ?
227179 		  PAL_VBI_LINES : NTSC_VBI_LINES);
228
-	buf->vb.size = ((dev->width << 1) * height * 2);
180
+	size = ((dev->width << 1) * height * 2);
229181 
230
-	if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
182
+	if (vb2_plane_size(vb, 0) < size)
231183 		return -EINVAL;
232
-
233
-	buf->vb.width = dev->width;
234
-	buf->vb.height = height;
235
-	buf->vb.field = field;
236
-	buf->vb.field = V4L2_FIELD_SEQ_TB;
237
-
238
-	if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
239
-		rc = videobuf_iolock(vq, &buf->vb, NULL);
240
-		if (rc < 0)
241
-			goto fail;
242
-	}
243
-
244
-	if (!dev->vbi_mode.bulk_ctl.num_bufs)
245
-		urb_init = 1;
246
-
247
-	if (urb_init) {
248
-		rc = cx231xx_init_vbi_isoc(dev, CX231XX_NUM_VBI_PACKETS,
249
-					   CX231XX_NUM_VBI_BUFS,
250
-					   dev->vbi_mode.alt_max_pkt_size[0],
251
-					   cx231xx_isoc_vbi_copy);
252
-		if (rc < 0)
253
-			goto fail;
254
-	}
255
-
256
-	buf->vb.state = VIDEOBUF_PREPARED;
184
+	vb2_set_plane_payload(vb, 0, size);
257185 	return 0;
258
-
259
-fail:
260
-	free_buffer(vq, buf);
261
-	return rc;
262186 }
263187 
264
-static void
265
-vbi_buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
188
+static void vbi_buf_queue(struct vb2_buffer *vb)
266189 {
190
+	struct cx231xx *dev = vb2_get_drv_priv(vb->vb2_queue);
267191 	struct cx231xx_buffer *buf =
268
-	    container_of(vb, struct cx231xx_buffer, vb);
269
-	struct cx231xx_fh *fh = vq->priv_data;
270
-	struct cx231xx *dev = fh->dev;
192
+	    container_of(vb, struct cx231xx_buffer, vb.vb2_buf);
271193 	struct cx231xx_dmaqueue *vidq = &dev->vbi_mode.vidq;
194
+	unsigned long flags;
272195 
273
-	buf->vb.state = VIDEOBUF_QUEUED;
274
-	list_add_tail(&buf->vb.queue, &vidq->active);
275
-
196
+	spin_lock_irqsave(&dev->vbi_mode.slock, flags);
197
+	list_add_tail(&buf->list, &vidq->active);
198
+	spin_unlock_irqrestore(&dev->vbi_mode.slock, flags);
276199 }
277200 
278
-static void vbi_buffer_release(struct videobuf_queue *vq,
279
-			       struct videobuf_buffer *vb)
201
+static void return_all_buffers(struct cx231xx *dev,
202
+			       enum vb2_buffer_state state)
280203 {
281
-	struct cx231xx_buffer *buf =
282
-	    container_of(vb, struct cx231xx_buffer, vb);
204
+	struct cx231xx_dmaqueue *vidq = &dev->vbi_mode.vidq;
205
+	struct cx231xx_buffer *buf, *node;
206
+	unsigned long flags;
283207 
284
-
285
-	free_buffer(vq, buf);
208
+	spin_lock_irqsave(&dev->vbi_mode.slock, flags);
209
+	dev->vbi_mode.bulk_ctl.buf = NULL;
210
+	list_for_each_entry_safe(buf, node, &vidq->active, list) {
211
+		list_del(&buf->list);
212
+		vb2_buffer_done(&buf->vb.vb2_buf, state);
213
+	}
214
+	spin_unlock_irqrestore(&dev->vbi_mode.slock, flags);
286215 }
287216 
288
-const struct videobuf_queue_ops cx231xx_vbi_qops = {
289
-	.buf_setup   = vbi_buffer_setup,
290
-	.buf_prepare = vbi_buffer_prepare,
291
-	.buf_queue   = vbi_buffer_queue,
292
-	.buf_release = vbi_buffer_release,
217
+static int vbi_start_streaming(struct vb2_queue *vq, unsigned int count)
218
+{
219
+	struct cx231xx *dev = vb2_get_drv_priv(vq);
220
+	struct cx231xx_dmaqueue *vidq = &dev->vbi_mode.vidq;
221
+	int ret;
222
+
223
+	vidq->sequence = 0;
224
+	ret = cx231xx_init_vbi_isoc(dev, CX231XX_NUM_VBI_PACKETS,
225
+				    CX231XX_NUM_VBI_BUFS,
226
+				    dev->vbi_mode.alt_max_pkt_size[0],
227
+				    cx231xx_isoc_vbi_copy);
228
+	if (ret)
229
+		return_all_buffers(dev, VB2_BUF_STATE_QUEUED);
230
+	return ret;
231
+}
232
+
233
+static void vbi_stop_streaming(struct vb2_queue *vq)
234
+{
235
+	struct cx231xx *dev = vb2_get_drv_priv(vq);
236
+
237
+	return_all_buffers(dev, VB2_BUF_STATE_ERROR);
238
+}
239
+
240
+struct vb2_ops cx231xx_vbi_qops = {
241
+	.queue_setup = vbi_queue_setup,
242
+	.buf_prepare = vbi_buf_prepare,
243
+	.buf_queue = vbi_buf_queue,
244
+	.start_streaming = vbi_start_streaming,
245
+	.stop_streaming = vbi_stop_streaming,
246
+	.wait_prepare = vb2_ops_wait_prepare,
247
+	.wait_finish = vb2_ops_wait_finish,
293248 };
294249 
295250 /* ------------------------------------------------------------------
....@@ -524,16 +479,15 @@
524479 				     struct cx231xx_buffer *buf)
525480 {
526481 	/* Advice that buffer was filled */
527
-	/* dev_dbg(dev->dev, "[%p/%d] wakeup\n", buf, buf->vb.i); */
482
+	/* dev_dbg(dev->dev, "[%p/%d] wakeup\n", buf, buf->vb.index); */
528483 
529
-	buf->vb.state = VIDEOBUF_DONE;
530
-	buf->vb.field_count++;
531
-	v4l2_get_timestamp(&buf->vb.ts);
484
+	buf->vb.sequence = dma_q->sequence++;
485
+	buf->vb.vb2_buf.timestamp = ktime_get_ns();
532486 
533487 	dev->vbi_mode.bulk_ctl.buf = NULL;
534488 
535
-	list_del(&buf->vb.queue);
536
-	wake_up(&buf->vb.done);
489
+	list_del(&buf->list);
490
+	vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
537491 }
538492 
539493 u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
....@@ -623,11 +577,11 @@
623577 	}
624578 
625579 	/* Get the next buffer */
626
-	*buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
580
+	*buf = list_entry(dma_q->active.next, struct cx231xx_buffer, list);
627581 
628582 	/* Cleans up buffer - Useful for testing for frame/URB loss */
629
-	outp = videobuf_to_vmalloc(&(*buf)->vb);
630
-	memset(outp, 0, (*buf)->vb.size);
583
+	outp = vb2_plane_vaddr(&(*buf)->vb.vb2_buf, 0);
584
+	memset(outp, 0, vb2_plane_size(&(*buf)->vb.vb2_buf, 0));
631585 
632586 	dev->vbi_mode.bulk_ctl.buf = *buf;
633587 
....@@ -668,7 +622,7 @@
668622 	if (buf == NULL)
669623 		return -EINVAL;
670624 
671
-	p_out_buffer = videobuf_to_vmalloc(&buf->vb);
625
+	p_out_buffer = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
672626 
673627 	if (dma_q->bytes_left_in_line != _line_size) {
674628 		current_line_bytes_copied =