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[media] cx25821: convert to vb2

Browse source 
This patch converts the cx25821 driver from the old videobuf framework to
the new vb2 framework.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2014-12-12 10:27:58 -03:00 committed by Mauro Carvalho Chehab
parent 8d8e6d6005
commit b671ae6bdc
4 changed files with 222 additions and 592 deletions
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2
drivers/media/pci/cx25821/Kconfig
View file

@ -2,7 +2,7 @@ config VIDEO_CX25821
tristate "Conexant cx25821 support"
depends on VIDEO_DEV && PCI && I2C
select I2C_ALGOBIT
select VIDEOBUF_DMA_SG
select VIDEOBUF2_DMA_SG
---help---
This is a video4linux driver for Conexant 25821 based
TV cards.

76
drivers/media/pci/cx25821/cx25821-core.c
View file

@ -874,10 +874,9 @@ static int cx25821_dev_setup(struct cx25821_dev *dev)
if (dev->pci->device != 0x8210) {
pr_info("%s(): Exiting. Incorrect Hardware device = 0x%02x\n",
__func__, dev->pci->device);
return -1;
} else {
pr_info("Athena Hardware device = 0x%02x\n", dev->pci->device);
return -ENODEV;
}
pr_info("Athena Hardware device = 0x%02x\n", dev->pci->device);
/* Apply a sensible clock frequency for the PCIe bridge */
dev->clk_freq = 28000000;
@ -1003,11 +1002,17 @@ EXPORT_SYMBOL(cx25821_riscmem_alloc);
static __le32 *cx25821_risc_field(__le32 * rp, struct scatterlist *sglist,
unsigned int offset, u32 sync_line,
unsigned int bpl, unsigned int padding,
unsigned int lines)
unsigned int lines, bool jump)
{
struct scatterlist *sg;
unsigned int line, todo;
if (jump) {
*(rp++) = cpu_to_le32(RISC_JUMP);
*(rp++) = cpu_to_le32(0);
*(rp++) = cpu_to_le32(0); /* bits 63-32 */
}
/* sync instruction */
if (sync_line != NO_SYNC_LINE)
*(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
@ -1073,13 +1078,13 @@ int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc,
fields++;
/* estimate risc mem: worst case is one write per page border +
one write per scan line + syncs + jump (all 2 dwords). Padding
one write per scan line + syncs + jump (all 3 dwords). Padding
can cause next bpl to start close to a page border. First DMA
region may be smaller than PAGE_SIZE */
/* write and jump need and extra dword */
instructions = fields * (1 + ((bpl + padding) * lines) / PAGE_SIZE +
lines);
instructions += 2;
instructions += 5;
rc = cx25821_riscmem_alloc(pci, risc, instructions * 12);
if (rc < 0)
@ -1090,17 +1095,17 @@ int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc,
if (UNSET != top_offset) {
rp = cx25821_risc_field(rp, sglist, top_offset, 0, bpl, padding,
lines);
lines, true);
}
if (UNSET != bottom_offset) {
rp = cx25821_risc_field(rp, sglist, bottom_offset, 0x200, bpl,
padding, lines);
padding, lines, UNSET == top_offset);
}
/* save pointer to jmp instruction address */
risc->jmp = rp;
BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
BUG_ON((risc->jmp - risc->cpu + 3) * sizeof(*risc->cpu) > risc->size);
return 0;
}
@ -1200,41 +1205,14 @@ int cx25821_risc_databuffer_audio(struct pci_dev *pci,
}
EXPORT_SYMBOL(cx25821_risc_databuffer_audio);
int cx25821_risc_stopper(struct pci_dev *pci, struct cx25821_riscmem *risc,
u32 reg, u32 mask, u32 value)
void cx25821_free_buffer(struct cx25821_dev *dev, struct cx25821_buffer *buf)
{
__le32 *rp;
int rc;
rc = cx25821_riscmem_alloc(pci, risc, 4 * 16);
if (rc < 0)
return rc;
/* write risc instructions */
rp = risc->cpu;
*(rp++) = cpu_to_le32(RISC_WRITECR | RISC_IRQ1);
*(rp++) = cpu_to_le32(reg);
*(rp++) = cpu_to_le32(value);
*(rp++) = cpu_to_le32(mask);
*(rp++) = cpu_to_le32(RISC_JUMP);
*(rp++) = cpu_to_le32(risc->dma);
*(rp++) = cpu_to_le32(0); /* bits 63-32 */
return 0;
}
void cx25821_free_buffer(struct videobuf_queue *q, struct cx25821_buffer *buf)
{
struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
BUG_ON(in_interrupt());
videobuf_waiton(q, &buf->vb, 0, 0);
videobuf_dma_unmap(q->dev, dma);
videobuf_dma_free(dma);
pci_free_consistent(to_pci_dev(q->dev),
if (WARN_ON(buf->risc.size == 0))
return;
pci_free_consistent(dev->pci,
buf->risc.size, buf->risc.cpu, buf->risc.dma);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
memset(&buf->risc, 0, sizeof(buf->risc));
}
static irqreturn_t cx25821_irq(int irq, void *dev_id)
@ -1319,14 +1297,15 @@ static int cx25821_initdev(struct pci_dev *pci_dev,
goto fail_unregister_device;
}
dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
if (IS_ERR(dev->alloc_ctx)) {
err = PTR_ERR(dev->alloc_ctx);
goto fail_unregister_pci;
}
err = cx25821_dev_setup(dev);
if (err) {
if (err == -EBUSY)
goto fail_unregister_device;
else
goto fail_unregister_pci;
}
if (err)
goto fail_free_ctx;
/* print pci info */
pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
@ -1356,6 +1335,8 @@ static int cx25821_initdev(struct pci_dev *pci_dev,
pr_info("cx25821_initdev() can't get IRQ !\n");
cx25821_dev_unregister(dev);
fail_free_ctx:
vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
fail_unregister_pci:
pci_disable_device(pci_dev);
fail_unregister_device:
@ -1379,6 +1360,7 @@ static void cx25821_finidev(struct pci_dev *pci_dev)
free_irq(pci_dev->irq, dev);
cx25821_dev_unregister(dev);
vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
v4l2_device_unregister(v4l2_dev);
kfree(dev);
}

712
drivers/media/pci/cx25821/cx25821-video.c
View file

@ -3,7 +3,7 @@
*
* Copyright (C) 2009 Conexant Systems Inc.
* Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
* Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
* Based on Steven Toth <stoth@linuxtv.org> cx25821 driver
* Parts adapted/taken from Eduardo Moscoso Rubino
* Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
*
@ -46,10 +46,6 @@ static unsigned int irq_debug;
module_param(irq_debug, int, 0644);
MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
static unsigned int vid_limit = 16;
module_param(vid_limit, int, 0644);
MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
#define FORMAT_FLAGS_PACKED 0x01
static const struct cx25821_fmt formats[] = {
@ -76,41 +72,6 @@ static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
return NULL;
}
void cx25821_video_wakeup(struct cx25821_dev *dev, struct cx25821_dmaqueue *q,
u32 count)
{
struct cx25821_buffer *buf;
int bc;
for (bc = 0;; bc++) {
if (list_empty(&q->active)) {
dprintk(1, "bc=%d (=0: active empty)\n", bc);
break;
}
buf = list_entry(q->active.next, struct cx25821_buffer,
vb.queue);
/* count comes from the hw and it is 16bit wide --
* this trick handles wrap-arounds correctly for
* up to 32767 buffers in flight... */
if ((s16) (count - buf->count) < 0)
break;
v4l2_get_timestamp(&buf->vb.ts);
buf->vb.state = VIDEOBUF_DONE;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
if (list_empty(&q->active))
del_timer(&q->timeout);
else
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
if (bc != 1)
pr_err("%s: %d buffers handled (should be 1)\n", __func__, bc);
}
int cx25821_start_video_dma(struct cx25821_dev *dev,
struct cx25821_dmaqueue *q,
struct cx25821_buffer *buf,
@ -123,7 +84,6 @@ int cx25821_start_video_dma(struct cx25821_dev *dev,
/* reset counter */
cx_write(channel->gpcnt_ctl, 3);
q->count = 1;
/* enable irq */
cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
@ -139,86 +99,8 @@ int cx25821_start_video_dma(struct cx25821_dev *dev,
return 0;
}
static int cx25821_restart_video_queue(struct cx25821_dev *dev,
struct cx25821_dmaqueue *q,
const struct sram_channel *channel)
{
struct cx25821_buffer *buf, *prev;
struct list_head *item;
if (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct cx25821_buffer,
vb.queue);
cx25821_start_video_dma(dev, q, buf, channel);
list_for_each(item, &q->active) {
buf = list_entry(item, struct cx25821_buffer, vb.queue);
buf->count = q->count++;
}
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
return 0;
}
prev = NULL;
for (;;) {
if (list_empty(&q->queued))
return 0;
buf = list_entry(q->queued.next, struct cx25821_buffer,
vb.queue);
if (NULL == prev) {
list_move_tail(&buf->vb.queue, &q->active);
cx25821_start_video_dma(dev, q, buf, channel);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
} else if (prev->vb.width == buf->vb.width &&
prev->vb.height == buf->vb.height &&
prev->fmt == buf->fmt) {
list_move_tail(&buf->vb.queue, &q->active);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
} else {
return 0;
}
prev = buf;
}
}
static void cx25821_vid_timeout(unsigned long data)
{
struct cx25821_data *timeout_data = (struct cx25821_data *)data;
struct cx25821_dev *dev = timeout_data->dev;
const struct sram_channel *channel = timeout_data->channel;
struct cx25821_dmaqueue *q = &dev->channels[channel->i].dma_vidq;
struct cx25821_buffer *buf;
unsigned long flags;
/* cx25821_sram_channel_dump(dev, channel); */
cx_clear(channel->dma_ctl, 0x11);
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct cx25821_buffer,
vb.queue);
list_del(&buf->vb.queue);
buf->vb.state = VIDEOBUF_ERROR;
wake_up(&buf->vb.done);
}
cx25821_restart_video_queue(dev, q, channel);
spin_unlock_irqrestore(&dev->slock, flags);
}
int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
{
u32 count = 0;
int handled = 0;
u32 mask;
const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
@ -239,317 +121,197 @@ int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
/* risc1 y */
if (status & FLD_VID_DST_RISC1) {
spin_lock(&dev->slock);
count = cx_read(channel->gpcnt);
cx25821_video_wakeup(dev, &dev->channels[channel->i].dma_vidq,
count);
spin_unlock(&dev->slock);
handled++;
}
struct cx25821_dmaqueue *dmaq =
&dev->channels[channel->i].dma_vidq;
struct cx25821_buffer *buf;
/* risc2 y */
if (status & 0x10) {
dprintk(2, "stopper video\n");
spin_lock(&dev->slock);
cx25821_restart_video_queue(dev,
&dev->channels[channel->i].dma_vidq, channel);
if (!list_empty(&dmaq->active)) {
buf = list_entry(dmaq->active.next,
struct cx25821_buffer, queue);
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
buf->vb.v4l2_buf.sequence = dmaq->count++;
list_del(&buf->queue);
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
}
spin_unlock(&dev->slock);
handled++;
}
return handled;
}
static int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count,
unsigned int *size)
static int cx25821_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
unsigned int *num_buffers, unsigned int *num_planes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct cx25821_channel *chan = q->priv_data;
*size = chan->fmt->depth * chan->width * chan->height >> 3;
if (0 == *count)
*count = 32;
if (*size * *count > vid_limit * 1024 * 1024)
*count = (vid_limit * 1024 * 1024) / *size;
struct cx25821_channel *chan = q->drv_priv;
*num_planes = 1;
sizes[0] = (chan->fmt->depth * chan->width * chan->height) >> 3;
alloc_ctxs[0] = chan->dev->alloc_ctx;
return 0;
}
static int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
enum v4l2_field field)
static int cx25821_buffer_prepare(struct vb2_buffer *vb)
{
struct cx25821_channel *chan = q->priv_data;
struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
struct cx25821_dev *dev = chan->dev;
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
int rc, init_buffer = 0;
struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
u32 line0_offset;
struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
int bpl_local = LINE_SIZE_D1;
int ret;
BUG_ON(NULL == chan->fmt);
if (chan->width < 48 || chan->width > 720 ||
chan->height < 32 || chan->height > 576)
if (chan->pixel_formats == PIXEL_FRMT_411)
buf->bpl = (chan->fmt->depth * chan->width) >> 3;
else
buf->bpl = (chan->fmt->depth >> 3) * chan->width;
if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
return -EINVAL;
vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
buf->vb.v4l2_buf.field = chan->field;
buf->vb.size = (chan->width * chan->height * chan->fmt->depth) >> 3;
if (chan->pixel_formats == PIXEL_FRMT_411) {
bpl_local = buf->bpl;
} else {
bpl_local = buf->bpl; /* Default */
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
if (buf->fmt != chan->fmt ||
buf->vb.width != chan->width ||
buf->vb.height != chan->height || buf->vb.field != field) {
buf->fmt = chan->fmt;
buf->vb.width = chan->width;
buf->vb.height = chan->height;
buf->vb.field = field;
init_buffer = 1;
}
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
init_buffer = 1;
rc = videobuf_iolock(q, &buf->vb, NULL);
if (0 != rc) {
printk(KERN_DEBUG pr_fmt("videobuf_iolock failed!\n"));
goto fail;
if (chan->use_cif_resolution) {
if (dev->tvnorm & V4L2_STD_625_50)
bpl_local = 352 << 1;
else
bpl_local = chan->cif_width << 1;
}
}
dprintk(1, "init_buffer=%d\n", init_buffer);
switch (chan->field) {
case V4L2_FIELD_TOP:
ret = cx25821_risc_buffer(dev->pci, &buf->risc,
sgt->sgl, 0, UNSET,
buf->bpl, 0, chan->height);
break;
case V4L2_FIELD_BOTTOM:
ret = cx25821_risc_buffer(dev->pci, &buf->risc,
sgt->sgl, UNSET, 0,
buf->bpl, 0, chan->height);
break;
case V4L2_FIELD_INTERLACED:
/* All other formats are top field first */
line0_offset = 0;
dprintk(1, "top field first\n");
if (init_buffer) {
if (chan->pixel_formats == PIXEL_FRMT_411)
buf->bpl = (buf->fmt->depth * buf->vb.width) >> 3;
else
buf->bpl = (buf->fmt->depth >> 3) * (buf->vb.width);
if (chan->pixel_formats == PIXEL_FRMT_411) {
bpl_local = buf->bpl;
} else {
bpl_local = buf->bpl; /* Default */
if (chan->use_cif_resolution) {
if (dev->tvnorm & V4L2_STD_625_50)
bpl_local = 352 << 1;
else
bpl_local = chan->cif_width << 1;
}
}
switch (buf->vb.field) {
case V4L2_FIELD_TOP:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist, 0, UNSET,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_BOTTOM:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist, UNSET, 0,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_INTERLACED:
/* All other formats are top field first */
line0_offset = 0;
dprintk(1, "top field first\n");
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist, line0_offset,
bpl_local, bpl_local, bpl_local,
buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_TB:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
0, buf->bpl * (buf->vb.height >> 1),
buf->bpl, 0, buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_BT:
cx25821_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
buf->bpl * (buf->vb.height >> 1), 0,
buf->bpl, 0, buf->vb.height >> 1);
break;
default:
BUG();
}
ret = cx25821_risc_buffer(dev->pci, &buf->risc,
sgt->sgl, line0_offset,
bpl_local, bpl_local, bpl_local,
chan->height >> 1);
break;
case V4L2_FIELD_SEQ_TB:
ret = cx25821_risc_buffer(dev->pci, &buf->risc,
sgt->sgl,
0, buf->bpl * (chan->height >> 1),
buf->bpl, 0, chan->height >> 1);
break;
case V4L2_FIELD_SEQ_BT:
ret = cx25821_risc_buffer(dev->pci, &buf->risc,
sgt->sgl,
buf->bpl * (chan->height >> 1), 0,
buf->bpl, 0, chan->height >> 1);
break;
default:
WARN_ON(1);
ret = -EINVAL;
break;
}
dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
buf, buf->vb.i, chan->width, chan->height, chan->fmt->depth,
chan->fmt->name, (unsigned long)buf->risc.dma);
buf, buf->vb.v4l2_buf.index, chan->width, chan->height,
chan->fmt->depth, chan->fmt->name,
(unsigned long)buf->risc.dma);
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
cx25821_free_buffer(q, buf);
return rc;
return ret;
}
static void cx25821_buffer_release(struct videobuf_queue *q,
struct videobuf_buffer *vb)
static void cx25821_buffer_finish(struct vb2_buffer *vb)
{
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
cx25821_free_buffer(q, buf);
}
static int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma)
{
struct cx25821_channel *chan = video_drvdata(file);
return videobuf_mmap_mapper(&chan->vidq, vma);
}
static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
struct cx25821_buffer *prev;
struct cx25821_channel *chan = vq->priv_data;
struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
struct cx25821_dev *dev = chan->dev;
cx25821_free_buffer(dev, buf);
}
static void cx25821_buffer_queue(struct vb2_buffer *vb)
{
struct cx25821_buffer *buf =
container_of(vb, struct cx25821_buffer, vb);
struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
struct cx25821_dev *dev = chan->dev;
struct cx25821_buffer *prev;
struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
/* add jump to stopper */
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
if (!list_empty(&q->queued)) {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
buf->vb.i);
} else if (list_empty(&q->active)) {
list_add_tail(&buf->vb.queue, &q->active);
cx25821_start_video_dma(dev, q, buf, chan->sram_channels);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
dprintk(2, "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
buf, buf->vb.i, buf->count, q->count);
if (list_empty(&q->active)) {
list_add_tail(&buf->queue, &q->active);
} else {
buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
prev = list_entry(q->active.prev, struct cx25821_buffer,
vb.queue);
if (prev->vb.width == buf->vb.width
&& prev->vb.height == buf->vb.height
&& prev->fmt == buf->fmt) {
list_add_tail(&buf->vb.queue, &q->active);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
/* 64 bit bits 63-32 */
prev->risc.jmp[2] = cpu_to_le32(0);
dprintk(2, "[%p/%d] buffer_queue - append to active, buf->count=%d\n",
buf, buf->vb.i, buf->count);
} else {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
buf->vb.i);
}
queue);
list_add_tail(&buf->queue, &q->active);
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
}
if (list_empty(&q->active))
dprintk(2, "active queue empty!\n");
}
static struct videobuf_queue_ops cx25821_video_qops = {
.buf_setup = cx25821_buffer_setup,
.buf_prepare = cx25821_buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = cx25821_buffer_release,
static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct cx25821_channel *chan = q->drv_priv;
struct cx25821_dev *dev = chan->dev;
struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
struct cx25821_buffer *buf = list_entry(dmaq->active.next,
struct cx25821_buffer, queue);
dmaq->count = 0;
cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
return 0;
}
static void cx25821_stop_streaming(struct vb2_queue *q)
{
struct cx25821_channel *chan = q->drv_priv;
struct cx25821_dev *dev = chan->dev;
struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
unsigned long flags;
cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&dmaq->active)) {
struct cx25821_buffer *buf = list_entry(dmaq->active.next,
struct cx25821_buffer, queue);
list_del(&buf->queue);
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
}
spin_unlock_irqrestore(&dev->slock, flags);
}
static struct vb2_ops cx25821_video_qops = {
.queue_setup = cx25821_queue_setup,
.buf_prepare = cx25821_buffer_prepare,
.buf_finish = cx25821_buffer_finish,
.buf_queue = cx25821_buffer_queue,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.start_streaming = cx25821_start_streaming,
.stop_streaming = cx25821_stop_streaming,
};
static ssize_t video_read(struct file *file, char __user * data, size_t count,
loff_t *ppos)
{
struct v4l2_fh *fh = file->private_data;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
int err = 0;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
if (chan->streaming_fh && chan->streaming_fh != fh) {
err = -EBUSY;
goto unlock;
}
chan->streaming_fh = fh;
err = videobuf_read_one(&chan->vidq, data, count, ppos,
file->f_flags & O_NONBLOCK);
unlock:
mutex_unlock(&dev->lock);
return err;
}
static unsigned int video_poll(struct file *file,
struct poll_table_struct *wait)
{
struct cx25821_channel *chan = video_drvdata(file);
unsigned long req_events = poll_requested_events(wait);
unsigned int res = v4l2_ctrl_poll(file, wait);
if (req_events & (POLLIN | POLLRDNORM))
res |= videobuf_poll_stream(file, &chan->vidq, wait);
return res;
/* This doesn't belong in poll(). This can be done
* much better with vb2. We keep this code here as a
* reminder.
if ((res & POLLIN) && buf->vb.state == VIDEOBUF_DONE) {
struct cx25821_dev *dev = chan->dev;
if (dev && chan->use_cif_resolution) {
u8 cam_id = *((char *)buf->vb.baddr + 3);
memcpy((char *)buf->vb.baddr,
(char *)buf->vb.baddr + (chan->width * 2),
(chan->width * 2));
*((char *)buf->vb.baddr + 3) = cam_id;
}
}
*/
}
static int video_release(struct file *file)
{
struct cx25821_channel *chan = video_drvdata(file);
struct v4l2_fh *fh = file->private_data;
struct cx25821_dev *dev = chan->dev;
const struct sram_channel *sram_ch =
dev->channels[0].sram_channels;
mutex_lock(&dev->lock);
/* stop the risc engine and fifo */
cx_write(sram_ch->dma_ctl, 0); /* FIFO and RISC disable */
/* stop video capture */
if (chan->streaming_fh == fh) {
videobuf_queue_cancel(&chan->vidq);
chan->streaming_fh = NULL;
}
if (chan->vidq.read_buf) {
cx25821_buffer_release(&chan->vidq, chan->vidq.read_buf);
kfree(chan->vidq.read_buf);
}
videobuf_mmap_free(&chan->vidq);
mutex_unlock(&dev->lock);
return v4l2_fh_release(file);
}
/* VIDEO IOCTLS */
static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
@ -571,7 +333,7 @@ static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
f->fmt.pix.width = chan->width;
f->fmt.pix.height = chan->height;
f->fmt.pix.field = chan->vidq.field;
f->fmt.pix.field = chan->field;
f->fmt.pix.pixelformat = chan->fmt->fourcc;
f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
@ -632,7 +394,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
return err;
chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
chan->vidq.field = f->fmt.pix.field;
chan->field = f->fmt.pix.field;
chan->width = f->fmt.pix.width;
chan->height = f->fmt.pix.height;
@ -654,47 +416,6 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
return 0;
}
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx25821_channel *chan = video_drvdata(file);
if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (chan->streaming_fh && chan->streaming_fh != priv)
return -EBUSY;
chan->streaming_fh = priv;
return videobuf_streamon(&chan->vidq);
}
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx25821_channel *chan = video_drvdata(file);
if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (chan->streaming_fh && chan->streaming_fh != priv)
return -EBUSY;
if (chan->streaming_fh == NULL)
return 0;
chan->streaming_fh = NULL;
return videobuf_streamoff(&chan->vidq);
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
int ret_val = 0;
struct cx25821_channel *chan = video_drvdata(file);
ret_val = videobuf_dqbuf(&chan->vidq, p, file->f_flags & O_NONBLOCK);
p->sequence = chan->dma_vidq.count;
return ret_val;
}
static int vidioc_log_status(struct file *file, void *priv)
{
struct cx25821_channel *chan = video_drvdata(file);
@ -729,29 +450,6 @@ static int cx25821_vidioc_querycap(struct file *file, void *priv,
return 0;
}
static int cx25821_vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
struct cx25821_channel *chan = video_drvdata(file);
return videobuf_reqbufs(&chan->vidq, p);
}
static int cx25821_vidioc_querybuf(struct file *file, void *priv,
struct v4l2_buffer *p)
{
struct cx25821_channel *chan = video_drvdata(file);
return videobuf_querybuf(&chan->vidq, p);
}
static int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
struct cx25821_channel *chan = video_drvdata(file);
return videobuf_qbuf(&chan->vidq, p);
}
static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
{
struct cx25821_channel *chan = video_drvdata(file);
@ -880,7 +578,7 @@ static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
return err;
chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
chan->vidq.field = f->fmt.pix.field;
chan->field = f->fmt.pix.field;
chan->width = f->fmt.pix.width;
chan->height = f->fmt.pix.height;
if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
@ -890,52 +588,6 @@ static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
return 0;
}
static ssize_t video_write(struct file *file, const char __user *data, size_t count,
loff_t *ppos)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
struct v4l2_fh *fh = file->private_data;
int err = 0;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
if (chan->streaming_fh && chan->streaming_fh != fh) {
err = -EBUSY;
goto unlock;
}
if (!chan->streaming_fh) {
err = cx25821_vidupstream_init(chan, chan->pixel_formats);
if (err)
goto unlock;
chan->streaming_fh = fh;
}
err = cx25821_write_frame(chan, data, count);
count -= err;
*ppos += err;
unlock:
mutex_unlock(&dev->lock);
return err;
}
static int video_out_release(struct file *file)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
struct v4l2_fh *fh = file->private_data;
mutex_lock(&dev->lock);
if (chan->streaming_fh == fh) {
cx25821_stop_upstream_video(chan);
chan->streaming_fh = NULL;
}
mutex_unlock(&dev->lock);
return v4l2_fh_release(file);
}
static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
.s_ctrl = cx25821_s_ctrl,
};
@ -943,11 +595,11 @@ static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
static const struct v4l2_file_operations video_fops = {
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.release = video_release,
.read = video_read,
.poll = video_poll,
.mmap = cx25821_video_mmap,
.release = vb2_fop_release,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = vb2_fop_mmap,
};
static const struct v4l2_ioctl_ops video_ioctl_ops = {
@ -956,17 +608,18 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_reqbufs = cx25821_vidioc_reqbufs,
.vidioc_querybuf = cx25821_vidioc_querybuf,
.vidioc_qbuf = cx25821_vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_g_std = cx25821_vidioc_g_std,
.vidioc_s_std = cx25821_vidioc_s_std,
.vidioc_enum_input = cx25821_vidioc_enum_input,
.vidioc_g_input = cx25821_vidioc_g_input,
.vidioc_s_input = cx25821_vidioc_s_input,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_log_status = vidioc_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
@ -984,9 +637,11 @@ static const struct video_device cx25821_video_device = {
static const struct v4l2_file_operations video_out_fops = {
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.write = video_write,
.release = video_out_release,
.release = vb2_fop_release,
.write = vb2_fop_write,
.poll = vb2_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = vb2_fop_mmap,
};
static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
@ -1017,13 +672,8 @@ void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
cx_clear(PCI_INT_MSK, 1);
if (video_is_registered(&dev->channels[chan_num].vdev)) {
struct cx25821_riscmem *risc =
&dev->channels[chan_num].dma_vidq.stopper;
video_unregister_device(&dev->channels[chan_num].vdev);
v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma);
}
}
@ -1041,6 +691,7 @@ int cx25821_video_register(struct cx25821_dev *dev)
struct cx25821_channel *chan = &dev->channels[i];
struct video_device *vdev = &chan->vdev;
struct v4l2_ctrl_handler *hdl = &chan->hdl;
struct vb2_queue *q;
bool is_output = i > SRAM_CH08;
if (i == SRAM_CH08) /* audio channel */
@ -1068,11 +719,9 @@ int cx25821_video_register(struct cx25821_dev *dev)
chan->out->chan = chan;
}
cx25821_risc_stopper(dev->pci, &chan->dma_vidq.stopper,
chan->sram_channels->dma_ctl, 0x11, 0);
chan->sram_channels = &cx25821_sram_channels[i];
chan->width = 720;
chan->field = V4L2_FIELD_INTERLACED;
if (dev->tvnorm & V4L2_STD_625_50)
chan->height = 576;
else
@ -1086,19 +735,27 @@ int cx25821_video_register(struct cx25821_dev *dev)
cx_write(chan->sram_channels->int_stat, 0xffffffff);
INIT_LIST_HEAD(&chan->dma_vidq.active);
INIT_LIST_HEAD(&chan->dma_vidq.queued);
chan->timeout_data.dev = dev;
chan->timeout_data.channel = &cx25821_sram_channels[i];
chan->dma_vidq.timeout.function = cx25821_vid_timeout;
chan->dma_vidq.timeout.data = (unsigned long)&chan->timeout_data;
init_timer(&chan->dma_vidq.timeout);
q = &chan->vidq;
if (!is_output)
videobuf_queue_sg_init(&chan->vidq, &cx25821_video_qops, &dev->pci->dev,
&dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED, sizeof(struct cx25821_buffer),
chan, &dev->lock);
q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
q->gfp_flags = GFP_DMA32;
q->min_buffers_needed = 2;
q->drv_priv = chan;
q->buf_struct_size = sizeof(struct cx25821_buffer);
q->ops = &cx25821_video_qops;
q->mem_ops = &vb2_dma_sg_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->lock = &dev->lock;
if (!is_output) {
err = vb2_queue_init(q);
if (err < 0)
goto fail_unreg;
}
/* register v4l devices */
*vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
@ -1108,6 +765,7 @@ int cx25821_video_register(struct cx25821_dev *dev)
else
vdev->vfl_dir = VFL_DIR_TX;
vdev->lock = &dev->lock;
vdev->queue = q;
snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
video_set_drvdata(vdev, chan);

24
drivers/media/pci/cx25821/cx25821.h
View file

@ -34,7 +34,7 @@
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/videobuf-dma-sg.h>
#include <media/videobuf2-dma-sg.h>
#include "cx25821-reg.h"
#include "cx25821-medusa-reg.h"
@ -120,13 +120,13 @@ struct cx25821_riscmem {
/* buffer for one video frame */
struct cx25821_buffer {
/* common v4l buffer stuff -- must be first */
struct videobuf_buffer vb;
struct vb2_buffer vb;
struct list_head queue;
/* cx25821 specific */
unsigned int bpl;
struct cx25821_riscmem risc;
const struct cx25821_fmt *fmt;
u32 count;
};
enum port {
@ -165,17 +165,9 @@ struct cx25821_i2c {
struct cx25821_dmaqueue {
struct list_head active;
struct list_head queued;
struct timer_list timeout;
struct cx25821_riscmem stopper;
u32 count;
};
struct cx25821_data {
struct cx25821_dev *dev;
const struct sram_channel *channel;
};
struct cx25821_dev;
struct cx25821_channel;
@ -213,18 +205,17 @@ struct cx25821_video_out_data {
struct cx25821_channel {
unsigned id;
struct cx25821_dev *dev;
struct v4l2_fh *streaming_fh;
struct v4l2_ctrl_handler hdl;
struct cx25821_data timeout_data;
struct video_device vdev;
struct cx25821_dmaqueue dma_vidq;
struct videobuf_queue vidq;
struct vb2_queue vidq;
const struct sram_channel *sram_channels;
const struct cx25821_fmt *fmt;
unsigned field;
unsigned int width, height;
int pixel_formats;
int use_cif_resolution;
@ -250,6 +241,7 @@ struct cx25821_dev {
int hwrevision;
/* used by cx25821-alsa */
struct snd_card *card;
void *alloc_ctx;
u32 clk_freq;
@ -425,10 +417,8 @@ extern int cx25821_risc_databuffer_audio(struct pci_dev *pci,
struct scatterlist *sglist,
unsigned int bpl,
unsigned int lines, unsigned int lpi);
extern void cx25821_free_buffer(struct videobuf_queue *q,
extern void cx25821_free_buffer(struct cx25821_dev *dev,
struct cx25821_buffer *buf);
extern int cx25821_risc_stopper(struct pci_dev *pci, struct cx25821_riscmem *risc,
u32 reg, u32 mask, u32 value);
extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
const struct sram_channel *ch);
extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,