forked from Minki/linux
df9ecb0cad
The queue_setup callback has a void pointer that is just for V4L2 and is the pointer to the v4l2_format struct that was passed to VIDIOC_CREATE_BUFS. The idea was that drivers would use the information from that struct to buffers suitable for the requested format. After the vb2 split series this pointer is now a void pointer, which is ugly, and the reality is that all existing drivers will effectively just look at the sizeimage field of v4l2_format. To make this more generic the queue_setup callback is changed: the void pointer is dropped, instead if the *num_planes argument is 0, then use the current format size, if it is non-zero, then it contains the number of requested planes and the sizes array contains the requested sizes. If either is unsupported, then return -EINVAL, otherwise use the requested size(s). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
/*
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
|
|
#include "cx88.h"
|
|
|
|
static unsigned int vbi_debug;
|
|
module_param(vbi_debug,int,0644);
|
|
MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");
|
|
|
|
#define dprintk(level,fmt, arg...) if (vbi_debug >= level) \
|
|
printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
int cx8800_vbi_fmt (struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct cx8800_dev *dev = video_drvdata(file);
|
|
|
|
f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
|
|
f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
|
|
f->fmt.vbi.offset = 244;
|
|
|
|
if (dev->core->tvnorm & V4L2_STD_525_60) {
|
|
/* ntsc */
|
|
f->fmt.vbi.sampling_rate = 28636363;
|
|
f->fmt.vbi.start[0] = 10;
|
|
f->fmt.vbi.start[1] = 273;
|
|
f->fmt.vbi.count[0] = VBI_LINE_NTSC_COUNT;
|
|
f->fmt.vbi.count[1] = VBI_LINE_NTSC_COUNT;
|
|
|
|
} else if (dev->core->tvnorm & V4L2_STD_625_50) {
|
|
/* pal */
|
|
f->fmt.vbi.sampling_rate = 35468950;
|
|
f->fmt.vbi.start[0] = V4L2_VBI_ITU_625_F1_START + 5;
|
|
f->fmt.vbi.start[1] = V4L2_VBI_ITU_625_F2_START + 5;
|
|
f->fmt.vbi.count[0] = VBI_LINE_PAL_COUNT;
|
|
f->fmt.vbi.count[1] = VBI_LINE_PAL_COUNT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int cx8800_start_vbi_dma(struct cx8800_dev *dev,
|
|
struct cx88_dmaqueue *q,
|
|
struct cx88_buffer *buf)
|
|
{
|
|
struct cx88_core *core = dev->core;
|
|
|
|
/* setup fifo + format */
|
|
cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
|
|
VBI_LINE_LENGTH, buf->risc.dma);
|
|
|
|
cx_write(MO_VBOS_CONTROL, ( (1 << 18) | // comb filter delay fixup
|
|
(1 << 15) | // enable vbi capture
|
|
(1 << 11) ));
|
|
|
|
/* reset counter */
|
|
cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
|
|
q->count = 0;
|
|
|
|
/* enable irqs */
|
|
cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_VIDINT);
|
|
cx_set(MO_VID_INTMSK, 0x0f0088);
|
|
|
|
/* enable capture */
|
|
cx_set(VID_CAPTURE_CONTROL,0x18);
|
|
|
|
/* start dma */
|
|
cx_set(MO_DEV_CNTRL2, (1<<5));
|
|
cx_set(MO_VID_DMACNTRL, 0x88);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cx8800_stop_vbi_dma(struct cx8800_dev *dev)
|
|
{
|
|
struct cx88_core *core = dev->core;
|
|
|
|
/* stop dma */
|
|
cx_clear(MO_VID_DMACNTRL, 0x88);
|
|
|
|
/* disable capture */
|
|
cx_clear(VID_CAPTURE_CONTROL,0x18);
|
|
|
|
/* disable irqs */
|
|
cx_clear(MO_PCI_INTMSK, PCI_INT_VIDINT);
|
|
cx_clear(MO_VID_INTMSK, 0x0f0088);
|
|
}
|
|
|
|
int cx8800_restart_vbi_queue(struct cx8800_dev *dev,
|
|
struct cx88_dmaqueue *q)
|
|
{
|
|
struct cx88_buffer *buf;
|
|
|
|
if (list_empty(&q->active))
|
|
return 0;
|
|
|
|
buf = list_entry(q->active.next, struct cx88_buffer, list);
|
|
dprintk(2,"restart_queue [%p/%d]: restart dma\n",
|
|
buf, buf->vb.vb2_buf.index);
|
|
cx8800_start_vbi_dma(dev, q, buf);
|
|
return 0;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
static int queue_setup(struct vb2_queue *q,
|
|
unsigned int *num_buffers, unsigned int *num_planes,
|
|
unsigned int sizes[], void *alloc_ctxs[])
|
|
{
|
|
struct cx8800_dev *dev = q->drv_priv;
|
|
|
|
*num_planes = 1;
|
|
if (dev->core->tvnorm & V4L2_STD_525_60)
|
|
sizes[0] = VBI_LINE_NTSC_COUNT * VBI_LINE_LENGTH * 2;
|
|
else
|
|
sizes[0] = VBI_LINE_PAL_COUNT * VBI_LINE_LENGTH * 2;
|
|
alloc_ctxs[0] = dev->alloc_ctx;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int buffer_prepare(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct cx8800_dev *dev = vb->vb2_queue->drv_priv;
|
|
struct cx88_buffer *buf = container_of(vbuf, struct cx88_buffer, vb);
|
|
struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
|
|
unsigned int lines;
|
|
unsigned int size;
|
|
|
|
if (dev->core->tvnorm & V4L2_STD_525_60)
|
|
lines = VBI_LINE_NTSC_COUNT;
|
|
else
|
|
lines = VBI_LINE_PAL_COUNT;
|
|
size = lines * VBI_LINE_LENGTH * 2;
|
|
if (vb2_plane_size(vb, 0) < size)
|
|
return -EINVAL;
|
|
vb2_set_plane_payload(vb, 0, size);
|
|
|
|
cx88_risc_buffer(dev->pci, &buf->risc, sgt->sgl,
|
|
0, VBI_LINE_LENGTH * lines,
|
|
VBI_LINE_LENGTH, 0,
|
|
lines);
|
|
return 0;
|
|
}
|
|
|
|
static void buffer_finish(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct cx8800_dev *dev = vb->vb2_queue->drv_priv;
|
|
struct cx88_buffer *buf = container_of(vbuf, struct cx88_buffer, vb);
|
|
struct cx88_riscmem *risc = &buf->risc;
|
|
|
|
if (risc->cpu)
|
|
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
|
|
memset(risc, 0, sizeof(*risc));
|
|
}
|
|
|
|
static void buffer_queue(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct cx8800_dev *dev = vb->vb2_queue->drv_priv;
|
|
struct cx88_buffer *buf = container_of(vbuf, struct cx88_buffer, vb);
|
|
struct cx88_buffer *prev;
|
|
struct cx88_dmaqueue *q = &dev->vbiq;
|
|
|
|
/* add jump to start */
|
|
buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8);
|
|
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
|
|
buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8);
|
|
|
|
if (list_empty(&q->active)) {
|
|
list_add_tail(&buf->list, &q->active);
|
|
cx8800_start_vbi_dma(dev, q, buf);
|
|
dprintk(2,"[%p/%d] vbi_queue - first active\n",
|
|
buf, buf->vb.vb2_buf.index);
|
|
|
|
} else {
|
|
buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
|
|
prev = list_entry(q->active.prev, struct cx88_buffer, list);
|
|
list_add_tail(&buf->list, &q->active);
|
|
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
|
|
dprintk(2,"[%p/%d] buffer_queue - append to active\n",
|
|
buf, buf->vb.vb2_buf.index);
|
|
}
|
|
}
|
|
|
|
static int start_streaming(struct vb2_queue *q, unsigned int count)
|
|
{
|
|
struct cx8800_dev *dev = q->drv_priv;
|
|
struct cx88_dmaqueue *dmaq = &dev->vbiq;
|
|
struct cx88_buffer *buf = list_entry(dmaq->active.next,
|
|
struct cx88_buffer, list);
|
|
|
|
cx8800_start_vbi_dma(dev, dmaq, buf);
|
|
return 0;
|
|
}
|
|
|
|
static void stop_streaming(struct vb2_queue *q)
|
|
{
|
|
struct cx8800_dev *dev = q->drv_priv;
|
|
struct cx88_core *core = dev->core;
|
|
struct cx88_dmaqueue *dmaq = &dev->vbiq;
|
|
unsigned long flags;
|
|
|
|
cx_clear(MO_VID_DMACNTRL, 0x11);
|
|
cx_clear(VID_CAPTURE_CONTROL, 0x06);
|
|
cx8800_stop_vbi_dma(dev);
|
|
spin_lock_irqsave(&dev->slock, flags);
|
|
while (!list_empty(&dmaq->active)) {
|
|
struct cx88_buffer *buf = list_entry(dmaq->active.next,
|
|
struct cx88_buffer, list);
|
|
|
|
list_del(&buf->list);
|
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
|
}
|
|
spin_unlock_irqrestore(&dev->slock, flags);
|
|
}
|
|
|
|
const struct vb2_ops cx8800_vbi_qops = {
|
|
.queue_setup = queue_setup,
|
|
.buf_prepare = buffer_prepare,
|
|
.buf_finish = buffer_finish,
|
|
.buf_queue = buffer_queue,
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
|
.wait_finish = vb2_ops_wait_finish,
|
|
.start_streaming = start_streaming,
|
|
.stop_streaming = stop_streaming,
|
|
};
|