1 // SPDX-License-Identifier: GPL-2.0-or-later
11 #include "saa7134-reg.h"
19 /* ------------------------------------------------------------------ */
30 /* ------------------------------------------------------------------ */
37 	buf->top_seen = 0;  in buffer_activate()
39 	if (!dev->ts_started)  in buffer_activate()
40 		dev->ts_field = V4L2_FIELD_TOP;  in buffer_activate()
44 	if (V4L2_FIELD_TOP == dev->ts_field) {  in buffer_activate()
45 		ts_dbg("- [top]     buf=%p next=%p\n", buf, next);  in buffer_activate()
48 		dev->ts_field = V4L2_FIELD_BOTTOM;  in buffer_activate()
50 		ts_dbg("- [bottom]  buf=%p next=%p\n", buf, next);  in buffer_activate()
53 		dev->ts_field = V4L2_FIELD_TOP;  in buffer_activate()
59 	mod_timer(&dev->ts_q.timeout, jiffies+TS_BUFFER_TIMEOUT);  in buffer_activate()
61 	if (!dev->ts_started)  in buffer_activate()
70 	struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;  in saa7134_ts_buffer_init()
73 	dmaq->curr = NULL;  in saa7134_ts_buffer_init()
74 	buf->activate = buffer_activate;  in saa7134_ts_buffer_init()
83 	struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;  in saa7134_ts_buffer_prepare()
84 	struct saa7134_dev *dev = dmaq->dev;  in saa7134_ts_buffer_prepare()
92 	lines = dev->ts.nr_packets;  in saa7134_ts_buffer_prepare()
96 		return -EINVAL;  in saa7134_ts_buffer_prepare()
99 	vbuf->field = dev->field;  in saa7134_ts_buffer_prepare()
101 	return saa7134_pgtable_build(dev->pci, &dmaq->pt, dma->sgl, dma->nents,  in saa7134_ts_buffer_prepare()
110 	struct saa7134_dmaqueue *dmaq = q->drv_priv;  in saa7134_ts_queue_setup()
111 	struct saa7134_dev *dev = dmaq->dev;  in saa7134_ts_queue_setup()
112 	int size = TS_PACKET_SIZE * dev->ts.nr_packets;  in saa7134_ts_queue_setup()
115 		*nbuffers = dev->ts.nr_bufs;  in saa7134_ts_queue_setup()
127 	struct saa7134_dmaqueue *dmaq = vq->drv_priv;  in saa7134_ts_start_streaming()
128 	struct saa7134_dev *dev = dmaq->dev;  in saa7134_ts_start_streaming()
134 	if (vb2_is_busy(&dev->video_vbq) && dev->fmt->planar) {  in saa7134_ts_start_streaming()
137 		list_for_each_entry_safe(buf, tmp, &dmaq->queue, entry) {  in saa7134_ts_start_streaming()
138 			list_del(&buf->entry);  in saa7134_ts_start_streaming()
139 			vb2_buffer_done(&buf->vb2.vb2_buf,  in saa7134_ts_start_streaming()
142 		if (dmaq->curr) {  in saa7134_ts_start_streaming()
143 			vb2_buffer_done(&dmaq->curr->vb2.vb2_buf,  in saa7134_ts_start_streaming()
145 			dmaq->curr = NULL;  in saa7134_ts_start_streaming()
147 		return -EBUSY;  in saa7134_ts_start_streaming()
149 	dmaq->seq_nr = 0;  in saa7134_ts_start_streaming()
156 	struct saa7134_dmaqueue *dmaq = vq->drv_priv;  in saa7134_ts_stop_streaming()
157 	struct saa7134_dev *dev = dmaq->dev;  in saa7134_ts_stop_streaming()
175 /* ----------------------------------------------------------- */
180 MODULE_PARM_DESC(tsbufs, "number of ts buffers for read/write IO, range 2-32");
192 	saa_writeb(SAA7134_TS_PARALLEL_SERIAL, (TS_PACKET_SIZE-1));  in saa7134_ts_init_hw()
193 	saa_writeb(SAA7134_TS_DMA0, ((dev->ts.nr_packets-1)&0xff));  in saa7134_ts_init_hw()
194 	saa_writeb(SAA7134_TS_DMA1, (((dev->ts.nr_packets-1)>>8)&0xff));  in saa7134_ts_init_hw()
197 		((((dev->ts.nr_packets-1)>>16)&0x3f) | 0x00));  in saa7134_ts_init_hw()
211 	if (ts_nr_packets > 312)  in saa7134_ts_init1()
212 		ts_nr_packets = 312;  in saa7134_ts_init1()
213 	dev->ts.nr_bufs    = tsbufs;  in saa7134_ts_init1()
214 	dev->ts.nr_packets = ts_nr_packets;  in saa7134_ts_init1()
216 	INIT_LIST_HEAD(&dev->ts_q.queue);  in saa7134_ts_init1()
217 	timer_setup(&dev->ts_q.timeout, saa7134_buffer_timeout, 0);  in saa7134_ts_init1()
218 	dev->ts_q.dev              = dev;  in saa7134_ts_init1()
219 	dev->ts_q.need_two         = 1;  in saa7134_ts_init1()
220 	dev->ts_started            = 0;  in saa7134_ts_init1()
221 	saa7134_pgtable_alloc(dev->pci, &dev->ts_q.pt);  in saa7134_ts_init1()
234 	if (!dev->ts_started)  in saa7134_ts_stop()
238 	switch (saa7134_boards[dev->board].ts_type) {  in saa7134_ts_stop()
241 		dev->ts_started = 0;  in saa7134_ts_stop()
245 		dev->ts_started = 0;  in saa7134_ts_stop()
256 	if (WARN_ON(dev->ts_started))  in saa7134_ts_start()
260 	saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff);  in saa7134_ts_start()
262 		((dev->ts.nr_packets - 1) >> 8) & 0xff);  in saa7134_ts_start()
265 		(((dev->ts.nr_packets - 1) >> 16) & 0x3f) | 0x00);  in saa7134_ts_start()
269 					  (dev->ts_q.pt.dma >> 12));  in saa7134_ts_start()
277 	/* TS clock non-inverted */  in saa7134_ts_start()
281 	switch (saa7134_boards[dev->board].ts_type) {  in saa7134_ts_start()
285 			(saa7134_boards[dev->board].ts_force_val << 4));  in saa7134_ts_start()
290 			(saa7134_boards[dev->board].ts_force_val << 4));  in saa7134_ts_start()
296 	dev->ts_started = 1;  in saa7134_ts_start()
303 	del_timer_sync(&dev->ts_q.timeout);  in saa7134_ts_fini()
304 	saa7134_pgtable_free(dev->pci, &dev->ts_q.pt);  in saa7134_ts_fini()
312 	spin_lock(&dev->slock);  in saa7134_irq_ts_done()
313 	if (dev->ts_q.curr) {  in saa7134_irq_ts_done()
314 		field = dev->ts_field;  in saa7134_irq_ts_done()
322 		saa7134_buffer_finish(dev, &dev->ts_q, VB2_BUF_STATE_DONE);  in saa7134_irq_ts_done()
324 	saa7134_buffer_next(dev,&dev->ts_q);  in saa7134_irq_ts_done()
327 	spin_unlock(&dev->slock);  in saa7134_irq_ts_done()