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path: root/drivers/media/video/cx231xx/cx231xx-video.c
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Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-video.c')
-rw-r--r--drivers/media/video/cx231xx/cx231xx-video.c451
1 files changed, 391 insertions, 60 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-video.c b/drivers/media/video/cx231xx/cx231xx-video.c
index b638c4ed3f2e..9a42ccbcb46f 100644
--- a/drivers/media/video/cx231xx/cx231xx-video.c
+++ b/drivers/media/video/cx231xx/cx231xx-video.c
@@ -237,7 +237,10 @@ static inline void buffer_filled(struct cx231xx *dev,
buf->vb.field_count++;
do_gettimeofday(&buf->vb.ts);
- dev->video_mode.isoc_ctl.buf = NULL;
+ if (dev->USE_ISO)
+ dev->video_mode.isoc_ctl.buf = NULL;
+ else
+ dev->video_mode.bulk_ctl.buf = NULL;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
@@ -295,7 +298,10 @@ static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
if (list_empty(&dma_q->active)) {
cx231xx_isocdbg("No active queue to serve\n");
- dev->video_mode.isoc_ctl.buf = NULL;
+ if (dev->USE_ISO)
+ dev->video_mode.isoc_ctl.buf = NULL;
+ else
+ dev->video_mode.bulk_ctl.buf = NULL;
*buf = NULL;
return;
}
@@ -307,7 +313,10 @@ static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
outp = videobuf_to_vmalloc(&(*buf)->vb);
memset(outp, 0, (*buf)->vb.size);
- dev->video_mode.isoc_ctl.buf = *buf;
+ if (dev->USE_ISO)
+ dev->video_mode.isoc_ctl.buf = *buf;
+ else
+ dev->video_mode.bulk_ctl.buf = *buf;
return;
}
@@ -418,6 +427,93 @@ static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
return rc;
}
+static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
+{
+ struct cx231xx_buffer *buf;
+ struct cx231xx_dmaqueue *dma_q = urb->context;
+ unsigned char *outp = NULL;
+ int rc = 1;
+ unsigned char *p_buffer;
+ u32 bytes_parsed = 0, buffer_size = 0;
+ u8 sav_eav = 0;
+
+ if (!dev)
+ return 0;
+
+ if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
+ return 0;
+
+ if (urb->status < 0) {
+ print_err_status(dev, -1, urb->status);
+ if (urb->status == -ENOENT)
+ return 0;
+ }
+
+ buf = dev->video_mode.bulk_ctl.buf;
+ if (buf != NULL)
+ outp = videobuf_to_vmalloc(&buf->vb);
+
+ if (1) {
+
+ /* get buffer pointer and length */
+ p_buffer = urb->transfer_buffer;
+ buffer_size = urb->actual_length;
+ bytes_parsed = 0;
+
+ if (dma_q->is_partial_line) {
+ /* Handle the case of a partial line */
+ sav_eav = dma_q->last_sav;
+ } else {
+ /* Check for a SAV/EAV overlapping
+ the buffer boundary */
+ sav_eav =
+ cx231xx_find_boundary_SAV_EAV(p_buffer,
+ dma_q->partial_buf,
+ &bytes_parsed);
+ }
+
+ sav_eav &= 0xF0;
+ /* Get the first line if we have some portion of an SAV/EAV from
+ the last buffer or a partial line */
+ if (sav_eav) {
+ bytes_parsed += cx231xx_get_video_line(dev, dma_q,
+ sav_eav, /* SAV/EAV */
+ p_buffer + bytes_parsed, /* p_buffer */
+ buffer_size - bytes_parsed);/* buf size */
+ }
+
+ /* Now parse data that is completely in this buffer */
+ /* dma_q->is_partial_line = 0; */
+
+ while (bytes_parsed < buffer_size) {
+ u32 bytes_used = 0;
+
+ sav_eav = cx231xx_find_next_SAV_EAV(
+ p_buffer + bytes_parsed, /* p_buffer */
+ buffer_size - bytes_parsed, /* buf size */
+ &bytes_used);/* bytes used to get SAV/EAV */
+
+ bytes_parsed += bytes_used;
+
+ sav_eav &= 0xF0;
+ if (sav_eav && (bytes_parsed < buffer_size)) {
+ bytes_parsed += cx231xx_get_video_line(dev,
+ dma_q, sav_eav, /* SAV/EAV */
+ p_buffer + bytes_parsed,/* p_buffer */
+ buffer_size - bytes_parsed);/*buf size*/
+ }
+ }
+
+ /* Save the last four bytes of the buffer so we can check the
+ buffer boundary condition next time */
+ memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
+ bytes_parsed = 0;
+
+ }
+ return rc;
+}
+
+
u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
u32 *p_bytes_used)
{
@@ -533,7 +629,10 @@ u32 cx231xx_copy_video_line(struct cx231xx *dev,
cx231xx_reset_video_buffer(dev, dma_q);
/* get the buffer pointer */
- buf = dev->video_mode.isoc_ctl.buf;
+ if (dev->USE_ISO)
+ buf = dev->video_mode.isoc_ctl.buf;
+ else
+ buf = dev->video_mode.bulk_ctl.buf;
/* Remember the field number for next time */
dma_q->current_field = field_number;
@@ -596,7 +695,10 @@ void cx231xx_reset_video_buffer(struct cx231xx *dev,
dma_q->field1_done = 0;
}
- buf = dev->video_mode.isoc_ctl.buf;
+ if (dev->USE_ISO)
+ buf = dev->video_mode.isoc_ctl.buf;
+ else
+ buf = dev->video_mode.bulk_ctl.buf;
if (buf == NULL) {
u8 *outp = NULL;
@@ -626,7 +728,10 @@ int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
void *startwrite;
int offset, lencopy;
- buf = dev->video_mode.isoc_ctl.buf;
+ if (dev->USE_ISO)
+ buf = dev->video_mode.isoc_ctl.buf;
+ else
+ buf = dev->video_mode.bulk_ctl.buf;
if (buf == NULL)
return -1;
@@ -691,7 +796,6 @@ buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
{
struct cx231xx_fh *fh = vq->priv_data;
struct cx231xx *dev = fh->dev;
- struct v4l2_frequency f;
*size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
if (0 == *count)
@@ -700,13 +804,6 @@ buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
if (*count < CX231XX_MIN_BUF)
*count = CX231XX_MIN_BUF;
- /* Ask tuner to go to analog mode */
- memset(&f, 0, sizeof(f));
- f.frequency = dev->ctl_freq;
- f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-
- call_all(dev, tuner, s_frequency, &f);
-
return 0;
}
@@ -730,8 +827,13 @@ static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
VIDEOBUF_ACTIVE, it won't be, though.
*/
spin_lock_irqsave(&dev->video_mode.slock, flags);
- if (dev->video_mode.isoc_ctl.buf == buf)
- dev->video_mode.isoc_ctl.buf = NULL;
+ if (dev->USE_ISO) {
+ if (dev->video_mode.isoc_ctl.buf == buf)
+ dev->video_mode.isoc_ctl.buf = NULL;
+ } else {
+ if (dev->video_mode.bulk_ctl.buf == buf)
+ dev->video_mode.bulk_ctl.buf = NULL;
+ }
spin_unlock_irqrestore(&dev->video_mode.slock, flags);
videobuf_vmalloc_free(&buf->vb);
@@ -764,14 +866,27 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
goto fail;
}
- if (!dev->video_mode.isoc_ctl.num_bufs)
- urb_init = 1;
-
+ if (dev->USE_ISO) {
+ if (!dev->video_mode.isoc_ctl.num_bufs)
+ urb_init = 1;
+ } else {
+ if (!dev->video_mode.bulk_ctl.num_bufs)
+ urb_init = 1;
+ }
+ /*cx231xx_info("urb_init=%d dev->video_mode.max_pkt_size=%d\n",
+ urb_init, dev->video_mode.max_pkt_size);*/
if (urb_init) {
- rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
+ dev->mode_tv = 0;
+ if (dev->USE_ISO)
+ rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
CX231XX_NUM_BUFS,
dev->video_mode.max_pkt_size,
cx231xx_isoc_copy);
+ else
+ rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
+ CX231XX_NUM_BUFS,
+ dev->video_mode.max_pkt_size,
+ cx231xx_bulk_copy);
if (rc < 0)
goto fail;
}
@@ -1039,7 +1154,7 @@ out:
return rc;
}
-static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
+static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
@@ -1138,6 +1253,19 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
struct cx231xx *dev = fh->dev;
int rc;
+ if (i == 10) {
+ dev->USE_ISO = 0;
+ cx231xx_info("trans-mode=BULK. USE_ISO = %d\n", dev->USE_ISO);
+ return 0;
+ }
+
+ if (i == 11) {
+ dev->USE_ISO = 1;
+ cx231xx_info("trans-mode=ISOC. USE_ISO = %d\n", dev->USE_ISO);
+ return 0;
+ }
+
+ dev->mode_tv = 0;
rc = check_dev(dev);
if (rc < 0)
return rc;
@@ -1337,6 +1465,11 @@ static int vidioc_s_frequency(struct file *file, void *priv,
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
+ u32 if_frequency = 5400000;
+
+ cx231xx_info("Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
+ f->frequency, f->type);
+ /*cx231xx_info("f->type: 1-radio 2-analogTV 3-digitalTV\n");*/
rc = check_dev(dev);
if (rc < 0)
@@ -1356,18 +1489,35 @@ static int vidioc_s_frequency(struct file *file, void *priv,
mutex_lock(&dev->lock);
dev->ctl_freq = f->frequency;
-
- if (dev->tuner_type == TUNER_XC5000) {
- if (dev->cx231xx_set_analog_freq != NULL)
- dev->cx231xx_set_analog_freq(dev, f->frequency);
- } else
- call_all(dev, tuner, s_frequency, f);
+ call_all(dev, tuner, s_frequency, f);
mutex_unlock(&dev->lock);
/* set post channel change settings in DIF first */
rc = cx231xx_tuner_post_channel_change(dev);
+ if (dev->tuner_type == TUNER_NXP_TDA18271) {
+ if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
+ if_frequency = 5400000; /*5.4MHz */
+ else if (dev->norm & V4L2_STD_B)
+ if_frequency = 6000000; /*6.0MHz */
+ else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
+ if_frequency = 6900000; /*6.9MHz */
+ else if (dev->norm & V4L2_STD_GH)
+ if_frequency = 7100000; /*7.1MHz */
+ else if (dev->norm & V4L2_STD_PAL_I)
+ if_frequency = 7250000; /*7.25MHz */
+ else if (dev->norm & V4L2_STD_SECAM_L)
+ if_frequency = 6900000; /*6.9MHz */
+ else if (dev->norm & V4L2_STD_SECAM_LC)
+ if_frequency = 1250000; /*1.25MHz */
+
+ cx231xx_info("if_frequency is set to %d\n", if_frequency);
+ cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
+
+ update_HH_register_after_set_DIF(dev);
+ }
+
cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
return rc;
@@ -1445,9 +1595,86 @@ static int vidioc_g_register(struct file *file, void *priv,
case V4L2_CHIP_MATCH_I2C_DRIVER:
call_all(dev, core, g_register, reg);
return 0;
- case V4L2_CHIP_MATCH_I2C_ADDR:
- /* Not supported yet */
- return -EINVAL;
+ case V4L2_CHIP_MATCH_I2C_ADDR:/*for register debug*/
+ switch (reg->match.addr) {
+ case 0: /* Cx231xx - internal registers */
+ ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
+ (u16)reg->reg, value, 4);
+ reg->val = value[0] | value[1] << 8 |
+ value[2] << 16 | value[3] << 24;
+
+ break;
+ case 0x600:/* AFE - read byte */
+ ret = cx231xx_read_i2c_master(dev, AFE_DEVICE_ADDRESS,
+ (u16)reg->reg, 2,
+ &data, 1 , 0);
+ reg->val = le32_to_cpu(data & 0xff);
+ break;
+
+ case 0x880:/* Video Block - read byte */
+ if (reg->reg < 0x0b) {
+ ret = cx231xx_read_i2c_master(dev,
+ VID_BLK_I2C_ADDRESS,
+ (u16)reg->reg, 2,
+ &data, 1 , 0);
+ reg->val = le32_to_cpu(data & 0xff);
+ } else {
+ ret = cx231xx_read_i2c_master(dev,
+ VID_BLK_I2C_ADDRESS,
+ (u16)reg->reg, 2,
+ &data, 4 , 0);
+ reg->val = le32_to_cpu(data);
+ }
+ break;
+ case 0x980:
+ ret = cx231xx_read_i2c_master(dev,
+ I2S_BLK_DEVICE_ADDRESS,
+ (u16)reg->reg, 1,
+ &data, 1 , 0);
+ reg->val = le32_to_cpu(data & 0xff);
+ break;
+ case 0x400:
+ ret =
+ cx231xx_read_i2c_master(dev, 0x40,
+ (u16)reg->reg, 1,
+ &data, 1 , 0);
+ reg->val = le32_to_cpu(data & 0xff);
+ break;
+ case 0xc01:
+ ret =
+ cx231xx_read_i2c_master(dev, 0xc0,
+ (u16)reg->reg, 2,
+ &data, 38, 1);
+ reg->val = le32_to_cpu(data);
+ break;
+ case 0x022:
+ ret =
+ cx231xx_read_i2c_master(dev, 0x02,
+ (u16)reg->reg, 1,
+ &data, 1, 2);
+ reg->val = le32_to_cpu(data & 0xff);
+ break;
+ case 0x322:
+ ret = cx231xx_read_i2c_master(dev,
+ 0x32,
+ (u16)reg->reg, 1,
+ &data, 4 , 2);
+ reg->val = le32_to_cpu(data);
+ break;
+ case 0x342:
+ ret = cx231xx_read_i2c_master(dev,
+ 0x34,
+ (u16)reg->reg, 1,
+ &data, 4 , 2);
+ reg->val = le32_to_cpu(data);
+ break;
+
+ default:
+ cx231xx_info("no match device address!!\n");
+ break;
+ }
+ return ret < 0 ? ret : 0;
+ /*return -EINVAL;*/
default:
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
@@ -1531,7 +1758,91 @@ static int vidioc_s_register(struct file *file, void *priv,
}
}
return ret < 0 ? ret : 0;
+ case V4L2_CHIP_MATCH_I2C_ADDR:
+ {
+ value = (u32) buf & 0xffffffff;
+ switch (reg->match.addr) {
+ case 0:/*cx231xx internal registers*/
+ data[0] = (u8) value;
+ data[1] = (u8) (value >> 8);
+ data[2] = (u8) (value >> 16);
+ data[3] = (u8) (value >> 24);
+ ret = cx231xx_write_ctrl_reg(dev,
+ VRT_SET_REGISTER,
+ (u16)reg->reg, data,
+ 4);
+ break;
+ case 0x600:/* AFE - read byte */
+ ret = cx231xx_write_i2c_master(dev,
+ AFE_DEVICE_ADDRESS,
+ (u16)reg->reg, 2,
+ value, 1 , 0);
+ break;
+
+ case 0x880:/* Video Block - read byte */
+ if (reg->reg < 0x0b)
+ cx231xx_write_i2c_master(dev,
+ VID_BLK_I2C_ADDRESS,
+ (u16)reg->reg, 2,
+ value, 1, 0);
+ else
+ cx231xx_write_i2c_master(dev,
+ VID_BLK_I2C_ADDRESS,
+ (u16)reg->reg, 2,
+ value, 4, 0);
+ break;
+ case 0x980:
+ ret =
+ cx231xx_write_i2c_master(dev,
+ I2S_BLK_DEVICE_ADDRESS,
+ (u16)reg->reg, 1,
+ value, 1, 0);
+ break;
+ case 0x400:
+ ret =
+ cx231xx_write_i2c_master(dev,
+ 0x40,
+ (u16)reg->reg, 1,
+ value, 1, 0);
+ break;
+ case 0xc01:
+ ret =
+ cx231xx_write_i2c_master(dev,
+ 0xc0,
+ (u16)reg->reg, 1,
+ value, 1, 1);
+ break;
+
+ case 0x022:
+ ret =
+ cx231xx_write_i2c_master(dev,
+ 0x02,
+ (u16)reg->reg, 1,
+ value, 1, 2);
+ case 0x322:
+ ret =
+ cx231xx_write_i2c_master(dev,
+ 0x32,
+ (u16)reg->reg, 1,
+ value, 4, 2);
+ break;
+
+ case 0x342:
+ ret =
+ cx231xx_write_i2c_master(dev,
+ 0x34,
+ (u16)reg->reg, 1,
+ value, 4, 2);
+ break;
+ default:
+ cx231xx_info("no match device address, "
+ "the value is %x\n", reg->match.addr);
+ break;
+
+ }
+
+ }
default:
break;
}
@@ -1975,7 +2286,11 @@ static int cx231xx_v4l2_open(struct file *filp)
dev->vscale = 0;
/* Power up in Analog TV mode */
- cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
+ if (dev->model == CX231XX_BOARD_CNXT_VIDEO_GRABBER)
+ cx231xx_set_power_mode(dev,
+ POLARIS_AVMODE_ENXTERNAL_AV);
+ else
+ cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
#if 0
cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
@@ -1991,7 +2306,6 @@ static int cx231xx_v4l2_open(struct file *filp)
/* device needs to be initialized before isoc transfer */
dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
- video_mux(dev, dev->video_input);
}
if (fh->radio) {
@@ -2013,7 +2327,8 @@ static int cx231xx_v4l2_open(struct file *filp)
if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
/* Set the required alternate setting VBI interface works in
Bulk mode only */
- cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
+ if (dev->model != CX231XX_BOARD_CNXT_VIDEO_GRABBER)
+ cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
NULL, &dev->vbi_mode.slock,
@@ -2056,6 +2371,10 @@ void cx231xx_release_analog_resources(struct cx231xx *dev)
if (dev->vdev) {
cx231xx_info("V4L2 device %s deregistered\n",
video_device_node_name(dev->vdev));
+
+ if (dev->model == CX231XX_BOARD_CNXT_VIDEO_GRABBER)
+ cx231xx_417_unregister(dev);
+
if (video_is_registered(dev->vdev))
video_unregister_device(dev->vdev);
else
@@ -2077,39 +2396,47 @@ static int cx231xx_v4l2_close(struct file *filp)
cx231xx_videodbg("users=%d\n", dev->users);
mutex_lock(&dev->lock);
-
+ cx231xx_videodbg("users=%d\n", dev->users);
if (res_check(fh))
res_free(fh);
- if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- videobuf_stop(&fh->vb_vidq);
- videobuf_mmap_free(&fh->vb_vidq);
+ /*To workaround error number=-71 on EP0 for VideoGrabber,
+ need exclude following.*/
+ if (dev->model != CX231XX_BOARD_CNXT_VIDEO_GRABBER)
+ if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ videobuf_stop(&fh->vb_vidq);
+ videobuf_mmap_free(&fh->vb_vidq);
+
+ /* the device is already disconnect,
+ free the remaining resources */
+ if (dev->state & DEV_DISCONNECTED) {
+ if (atomic_read(&dev->devlist_count) > 0) {
+ cx231xx_release_resources(dev);
+ mutex_unlock(&dev->lock);
+ kfree(dev);
+ dev = NULL;
+ return 0;
+ }
+ mutex_unlock(&dev->lock);
+ return 0;
+ }
- /* the device is already disconnect,
- free the remaining resources */
- if (dev->state & DEV_DISCONNECTED) {
- cx231xx_release_resources(dev);
+ /* do this before setting alternate! */
+ cx231xx_uninit_vbi_isoc(dev);
+
+ /* set alternate 0 */
+ if (!dev->vbi_or_sliced_cc_mode)
+ cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
+ else
+ cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
+
+ kfree(fh);
+ dev->users--;
+ wake_up_interruptible_nr(&dev->open, 1);
mutex_unlock(&dev->lock);
- kfree(dev);
return 0;
}
- /* do this before setting alternate! */
- cx231xx_uninit_vbi_isoc(dev);
-
- /* set alternate 0 */
- if (!dev->vbi_or_sliced_cc_mode)
- cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
- else
- cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
-
- kfree(fh);
- dev->users--;
- wake_up_interruptible_nr(&dev->open, 1);
- mutex_unlock(&dev->lock);
- return 0;
- }
-
if (dev->users == 1) {
videobuf_stop(&fh->vb_vidq);
videobuf_mmap_free(&fh->vb_vidq);
@@ -2120,6 +2447,7 @@ static int cx231xx_v4l2_close(struct file *filp)
cx231xx_release_resources(dev);
mutex_unlock(&dev->lock);
kfree(dev);
+ dev = NULL;
return 0;
}
@@ -2127,7 +2455,10 @@ static int cx231xx_v4l2_close(struct file *filp)
call_all(dev, core, s_power, 0);
/* do this before setting alternate! */
- cx231xx_uninit_isoc(dev);
+ if (dev->USE_ISO)
+ cx231xx_uninit_isoc(dev);
+ else
+ cx231xx_uninit_bulk(dev);
cx231xx_set_mode(dev, CX231XX_SUSPEND);
/* set alternate 0 */
@@ -2175,7 +2506,7 @@ cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
* cx231xx_v4l2_poll()
* will allocate buffers when called for the first time
*/
-static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
+static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
{
struct cx231xx_fh *fh = filp->private_data;
struct cx231xx *dev = fh->dev;