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e54560d963
linux_dsm_epyc7002/drivers/media/usb/cx231xx/cx231xx-video.c
Andrzej Hajda e54560d963 [media] cx231xx: fix handling cx231xx_read_i2c_data result 
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-10-03 11:32:32 -03:00

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/*
cx231xx-video.c - driver for Conexant Cx23100/101/102
USB video capture devices
Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
Based on em28xx driver
Based on cx23885 driver
Based on cx88 driver
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "cx231xx.h"
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/bitmap.h>
#include <linux/i2c.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/msp3400.h>
#include <media/tuner.h>
#include "dvb_frontend.h"
#include "cx231xx-vbi.h"
#define CX231XX_VERSION "0.0.3"
#define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
#define DRIVER_DESC "Conexant cx231xx based USB video device driver"
#define cx231xx_videodbg(fmt, arg...) do {\
if (video_debug) \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __func__ , ##arg); } while (0)
static unsigned int isoc_debug;
module_param(isoc_debug, int, 0644);
MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
#define cx231xx_isocdbg(fmt, arg...) \
do {\
if (isoc_debug) { \
printk(KERN_INFO "%s %s :"fmt, \
dev->name, __func__ , ##arg); \
} \
} while (0)
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(CX231XX_VERSION);
static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
module_param_array(card, int, NULL, 0444);
module_param_array(video_nr, int, NULL, 0444);
module_param_array(vbi_nr, int, NULL, 0444);
module_param_array(radio_nr, int, NULL, 0444);
MODULE_PARM_DESC(card, "card type");
MODULE_PARM_DESC(video_nr, "video device numbers");
MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
MODULE_PARM_DESC(radio_nr, "radio device numbers");
static unsigned int video_debug;
module_param(video_debug, int, 0644);
MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
/* supported video standards */
static struct cx231xx_fmt format[] = {
{
.name = "16bpp YUY2, 4:2:2, packed",
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
.reg = 0,
},
};
static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev = dev->media_dev;
struct media_entity *entity, *decoder = NULL, *source;
struct media_link *link, *found_link = NULL;
int i, ret, active_links = 0;
if (!mdev)
return 0;
/*
* This will find the tuner that is connected into the decoder.
* Technically, this is not 100% correct, as the device may be
* using an analog input instead of the tuner. However, as we can't
* do DVB streaming while the DMA engine is being used for V4L2,
* this should be enough for the actual needs.
*/
media_device_for_each_entity(entity, mdev) {
if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
decoder = entity;
break;
}
}
if (!decoder)
return 0;
for (i = 0; i < decoder->num_links; i++) {
link = &decoder->links[i];
if (link->sink->entity == decoder) {
found_link = link;
if (link->flags & MEDIA_LNK_FL_ENABLED)
active_links++;
break;
}
}
if (active_links == 1 || !found_link)
return 0;
source = found_link->source->entity;
for (i = 0; i < source->num_links; i++) {
struct media_entity *sink;
int flags = 0;
link = &source->links[i];
sink = link->sink->entity;
if (sink == entity)
flags = MEDIA_LNK_FL_ENABLED;
ret = media_entity_setup_link(link, flags);
if (ret) {
dev_err(dev->dev,
"Couldn't change link %s->%s to %s. Error %d\n",
source->name, sink->name,
flags ? "enabled" : "disabled",
ret);
return ret;
} else
dev_dbg(dev->dev,
"link %s->%s was %s\n",
source->name, sink->name,
flags ? "ENABLED" : "disabled");
}
#endif
return 0;
}
/* ------------------------------------------------------------------
Video buffer and parser functions
------------------------------------------------------------------*/
/*
* Announces that a buffer were filled and request the next
*/
static inline void buffer_filled(struct cx231xx *dev,
struct cx231xx_dmaqueue *dma_q,
struct cx231xx_buffer *buf)
{
/* Advice that buffer was filled */
cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
buf->vb.state = VIDEOBUF_DONE;
buf->vb.field_count++;
v4l2_get_timestamp(&buf->vb.ts);
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);
}
static inline void print_err_status(struct cx231xx *dev, int packet, int status)
{
char *errmsg = "Unknown";
switch (status) {
case -ENOENT:
errmsg = "unlinked synchronuously";
break;
case -ECONNRESET:
errmsg = "unlinked asynchronuously";
break;
case -ENOSR:
errmsg = "Buffer error (overrun)";
break;
case -EPIPE:
errmsg = "Stalled (device not responding)";
break;
case -EOVERFLOW:
errmsg = "Babble (bad cable?)";
break;
case -EPROTO:
errmsg = "Bit-stuff error (bad cable?)";
break;
case -EILSEQ:
errmsg = "CRC/Timeout (could be anything)";
break;
case -ETIME:
errmsg = "Device does not respond";
break;
}
if (packet < 0) {
cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
} else {
cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
packet, status, errmsg);
}
}
/*
* video-buf generic routine to get the next available buffer
*/
static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
struct cx231xx_buffer **buf)
{
struct cx231xx_video_mode *vmode =
container_of(dma_q, struct cx231xx_video_mode, vidq);
struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
char *outp;
if (list_empty(&dma_q->active)) {
cx231xx_isocdbg("No active queue to serve\n");
if (dev->USE_ISO)
dev->video_mode.isoc_ctl.buf = NULL;
else
dev->video_mode.bulk_ctl.buf = NULL;
*buf = NULL;
return;
}
/* Get the next buffer */
*buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
/* Cleans up buffer - Useful for testing for frame/URB loss */
outp = videobuf_to_vmalloc(&(*buf)->vb);
memset(outp, 0, (*buf)->vb.size);
if (dev->USE_ISO)
dev->video_mode.isoc_ctl.buf = *buf;
else
dev->video_mode.bulk_ctl.buf = *buf;
return;
}
/*
* Controls the isoc copy of each urb packet
*/
static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
{
struct cx231xx_dmaqueue *dma_q = urb->context;
int i;
unsigned char *p_buffer;
u32 bytes_parsed = 0, buffer_size = 0;
u8 sav_eav = 0;
if (!dev)
return 0;
if (dev->state & DEV_DISCONNECTED)
return 0;
if (urb->status < 0) {
print_err_status(dev, -1, urb->status);
if (urb->status == -ENOENT)
return 0;
}
for (i = 0; i < urb->number_of_packets; i++) {
int status = urb->iso_frame_desc[i].status;
if (status < 0) {
print_err_status(dev, i, status);
if (urb->iso_frame_desc[i].status != -EPROTO)
continue;
}
if (urb->iso_frame_desc[i].actual_length <= 0) {
/* cx231xx_isocdbg("packet %d is empty",i); - spammy */
continue;
}
if (urb->iso_frame_desc[i].actual_length >
dev->video_mode.max_pkt_size) {
cx231xx_isocdbg("packet bigger than packet size");
continue;
}
/* get buffer pointer and length */
p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
buffer_size = urb->iso_frame_desc[i].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 1;
}
static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
{
struct cx231xx_dmaqueue *dma_q = urb->context;
unsigned char *p_buffer;
u32 bytes_parsed = 0, buffer_size = 0;
u8 sav_eav = 0;
if (!dev)
return 0;
if (dev->state & DEV_DISCONNECTED)
return 0;
if (urb->status < 0) {
print_err_status(dev, -1, urb->status);
if (urb->status == -ENOENT)
return 0;
}
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 1;
}
u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
u32 *p_bytes_used)
{
u32 bytes_used;
u8 boundary_bytes[8];
u8 sav_eav = 0;
*p_bytes_used = 0;
/* Create an array of the last 4 bytes of the last buffer and the first
4 bytes of the current buffer. */
memcpy(boundary_bytes, partial_buf, 4);
memcpy(boundary_bytes + 4, p_buffer, 4);
/* Check for the SAV/EAV in the boundary buffer */
sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
&bytes_used);
if (sav_eav) {
/* found a boundary SAV/EAV. Updates the bytes used to reflect
only those used in the new buffer */
*p_bytes_used = bytes_used - 4;
}
return sav_eav;
}
u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
{
u32 i;
u8 sav_eav = 0;
/*
* Don't search if the buffer size is less than 4. It causes a page
* fault since buffer_size - 4 evaluates to a large number in that
* case.
*/
if (buffer_size < 4) {
*p_bytes_used = buffer_size;
return 0;
}
for (i = 0; i < (buffer_size - 3); i++) {
if ((p_buffer[i] == 0xFF) &&
(p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
*p_bytes_used = i + 4;
sav_eav = p_buffer[i + 3];
return sav_eav;
}
}
*p_bytes_used = buffer_size;
return 0;
}
u32 cx231xx_get_video_line(struct cx231xx *dev,
struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
u8 *p_buffer, u32 buffer_size)
{
u32 bytes_copied = 0;
int current_field = -1;
switch (sav_eav) {
case SAV_ACTIVE_VIDEO_FIELD1:
/* looking for skipped line which occurred in PAL 720x480 mode.
In this case, there will be no active data contained
between the SAV and EAV */
if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
(p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
(p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
(p_buffer[3] == EAV_VBLANK_FIELD1) ||
(p_buffer[3] == EAV_VBLANK_FIELD2)))
return bytes_copied;
current_field = 1;
break;
case SAV_ACTIVE_VIDEO_FIELD2:
/* looking for skipped line which occurred in PAL 720x480 mode.
In this case, there will be no active data contained between
the SAV and EAV */
if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
(p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
(p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
(p_buffer[3] == EAV_VBLANK_FIELD1) ||
(p_buffer[3] == EAV_VBLANK_FIELD2)))
return bytes_copied;
current_field = 2;
break;
}
dma_q->last_sav = sav_eav;
bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
buffer_size, current_field);
return bytes_copied;
}
u32 cx231xx_copy_video_line(struct cx231xx *dev,
struct cx231xx_dmaqueue *dma_q, u8 *p_line,
u32 length, int field_number)
{
u32 bytes_to_copy;
struct cx231xx_buffer *buf;
u32 _line_size = dev->width * 2;
if (dma_q->current_field != field_number)
cx231xx_reset_video_buffer(dev, dma_q);
/* get the buffer pointer */
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;
bytes_to_copy = dma_q->bytes_left_in_line;
if (bytes_to_copy > length)
bytes_to_copy = length;
if (dma_q->lines_completed >= dma_q->lines_per_field) {
dma_q->bytes_left_in_line -= bytes_to_copy;
dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
0 : 1;
return 0;
}
dma_q->is_partial_line = 1;
/* If we don't have a buffer, just return the number of bytes we would
have copied if we had a buffer. */
if (!buf) {
dma_q->bytes_left_in_line -= bytes_to_copy;
dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
? 0 : 1;
return bytes_to_copy;
}
/* copy the data to video buffer */
cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
dma_q->pos += bytes_to_copy;
dma_q->bytes_left_in_line -= bytes_to_copy;
if (dma_q->bytes_left_in_line == 0) {
dma_q->bytes_left_in_line = _line_size;
dma_q->lines_completed++;
dma_q->is_partial_line = 0;
if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
buffer_filled(dev, dma_q, buf);
dma_q->pos = 0;
buf = NULL;
dma_q->lines_completed = 0;
}
}
return bytes_to_copy;
}
void cx231xx_reset_video_buffer(struct cx231xx *dev,
struct cx231xx_dmaqueue *dma_q)
{
struct cx231xx_buffer *buf;
/* handle the switch from field 1 to field 2 */
if (dma_q->current_field == 1) {
if (dma_q->lines_completed >= dma_q->lines_per_field)
dma_q->field1_done = 1;
else
dma_q->field1_done = 0;
}
if (dev->USE_ISO)
buf = dev->video_mode.isoc_ctl.buf;
else
buf = dev->video_mode.bulk_ctl.buf;
if (buf == NULL) {
/* first try to get the buffer */
get_next_buf(dma_q, &buf);
dma_q->pos = 0;
dma_q->field1_done = 0;
dma_q->current_field = -1;
}
/* reset the counters */
dma_q->bytes_left_in_line = dev->width << 1;
dma_q->lines_completed = 0;
}
int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
u8 *p_buffer, u32 bytes_to_copy)
{
u8 *p_out_buffer = NULL;
u32 current_line_bytes_copied = 0;
struct cx231xx_buffer *buf;
u32 _line_size = dev->width << 1;
void *startwrite;
int offset, lencopy;
if (dev->USE_ISO)
buf = dev->video_mode.isoc_ctl.buf;
else
buf = dev->video_mode.bulk_ctl.buf;
if (buf == NULL)
return -1;
p_out_buffer = videobuf_to_vmalloc(&buf->vb);
current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
/* Offset field 2 one line from the top of the buffer */
offset = (dma_q->current_field == 1) ? 0 : _line_size;
/* Offset for field 2 */
startwrite = p_out_buffer + offset;
/* lines already completed in the current field */
startwrite += (dma_q->lines_completed * _line_size * 2);
/* bytes already completed in the current line */
startwrite += current_line_bytes_copied;
lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
bytes_to_copy : dma_q->bytes_left_in_line;
if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
return 0;
/* The below copies the UYVY data straight into video buffer */
cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
return 0;
}
void cx231xx_swab(u16 *from, u16 *to, u16 len)
{
u16 i;
if (len <= 0)
return;
for (i = 0; i < len / 2; i++)
to[i] = (from[i] << 8) | (from[i] >> 8);
}
u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
{
u8 buffer_complete = 0;
/* Dual field stream */
buffer_complete = ((dma_q->current_field == 2) &&
(dma_q->lines_completed >= dma_q->lines_per_field) &&
dma_q->field1_done);
return buffer_complete;
}
/* ------------------------------------------------------------------
Videobuf operations
------------------------------------------------------------------*/
static int
buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
{
struct cx231xx_fh *fh = vq->priv_data;
struct cx231xx *dev = fh->dev;
*size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
if (0 == *count)
*count = CX231XX_DEF_BUF;
if (*count < CX231XX_MIN_BUF)
*count = CX231XX_MIN_BUF;
cx231xx_enable_analog_tuner(dev);
return 0;
}
/* This is called *without* dev->slock held; please keep it that way */
static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
{
struct cx231xx_fh *fh = vq->priv_data;
struct cx231xx *dev = fh->dev;
unsigned long flags = 0;
BUG_ON(in_interrupt());
/* We used to wait for the buffer to finish here, but this didn't work
because, as we were keeping the state as VIDEOBUF_QUEUED,
videobuf_queue_cancel marked it as finished for us.
(Also, it could wedge forever if the hardware was misconfigured.)
This should be safe; by the time we get here, the buffer isn't
queued anymore. If we ever start marking the buffers as
VIDEOBUF_ACTIVE, it won't be, though.
*/
spin_lock_irqsave(&dev->video_mode.slock, flags);
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);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
static int
buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct cx231xx_fh *fh = vq->priv_data;
struct cx231xx_buffer *buf =
container_of(vb, struct cx231xx_buffer, vb);
struct cx231xx *dev = fh->dev;
int rc = 0, urb_init = 0;
/* The only currently supported format is 16 bits/pixel */
buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
+ 7) >> 3;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
buf->vb.width = dev->width;
buf->vb.height = dev->height;
buf->vb.field = field;
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(vq, &buf->vb, NULL);
if (rc < 0)
goto fail;
}
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;
}
dev_dbg(dev->dev,
"urb_init=%d dev->video_mode.max_pkt_size=%d\n",
urb_init, dev->video_mode.max_pkt_size);
if (urb_init) {
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;
}
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
free_buffer(vq, buf);
return rc;
}
static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct cx231xx_buffer *buf =
container_of(vb, struct cx231xx_buffer, vb);
struct cx231xx_fh *fh = vq->priv_data;
struct cx231xx *dev = fh->dev;
struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &vidq->active);
}
static void buffer_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
struct cx231xx_buffer *buf =
container_of(vb, struct cx231xx_buffer, vb);
struct cx231xx_fh *fh = vq->priv_data;
struct cx231xx *dev = (struct cx231xx *)fh->dev;
cx231xx_isocdbg("cx231xx: called buffer_release\n");
free_buffer(vq, buf);
}
static struct videobuf_queue_ops cx231xx_video_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
/********************* v4l2 interface **************************************/
void video_mux(struct cx231xx *dev, int index)
{
dev->video_input = index;
dev->ctl_ainput = INPUT(index)->amux;
cx231xx_set_video_input_mux(dev, index);
cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
cx231xx_set_audio_input(dev, dev->ctl_ainput);
dev_dbg(dev->dev, "video_mux : %d\n", index);
/* do mode control overrides if required */
cx231xx_do_mode_ctrl_overrides(dev);
}
/* Usage lock check functions */
static int res_get(struct cx231xx_fh *fh)
{
struct cx231xx *dev = fh->dev;
int rc = 0;
/* This instance already has stream_on */
if (fh->stream_on)
return rc;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
if (dev->stream_on)
return -EBUSY;
dev->stream_on = 1;
} else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
if (dev->vbi_stream_on)
return -EBUSY;
dev->vbi_stream_on = 1;
} else
return -EINVAL;
fh->stream_on = 1;
return rc;
}
static int res_check(struct cx231xx_fh *fh)
{
return fh->stream_on;
}
static void res_free(struct cx231xx_fh *fh)
{
struct cx231xx *dev = fh->dev;
fh->stream_on = 0;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
dev->stream_on = 0;
if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
dev->vbi_stream_on = 0;
}
static int check_dev(struct cx231xx *dev)
{
if (dev->state & DEV_DISCONNECTED) {
dev_err(dev->dev, "v4l2 ioctl: device not present\n");
return -ENODEV;
}
return 0;
}
/* ------------------------------------------------------------------
IOCTL vidioc handling
------------------------------------------------------------------*/
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
f->fmt.pix.width = dev->width;
f->fmt.pix.height = dev->height;
f->fmt.pix.pixelformat = dev->format->fourcc;
f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
return 0;
}
static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(format); i++)
if (format[i].fourcc == fourcc)
return &format[i];
return NULL;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
unsigned int width = f->fmt.pix.width;
unsigned int height = f->fmt.pix.height;
unsigned int maxw = norm_maxw(dev);
unsigned int maxh = norm_maxh(dev);
struct cx231xx_fmt *fmt;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
if (!fmt) {
cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
f->fmt.pix.pixelformat);
return -EINVAL;
}
/* width must even because of the YUYV format
height must be even because of interlacing */
v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
f->fmt.pix.width = width;
f->fmt.pix.height = height;
f->fmt.pix.pixelformat = fmt->fourcc;
f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
struct cx231xx_fmt *fmt;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
rc = check_dev(dev);
if (rc < 0)
return rc;
vidioc_try_fmt_vid_cap(file, priv, f);
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
if (!fmt)
return -EINVAL;
if (videobuf_queue_is_busy(&fh->vb_vidq)) {
dev_err(dev->dev, "%s: queue busy\n", __func__);
return -EBUSY;
}
if (dev->stream_on && !fh->stream_on) {
dev_err(dev->dev,
"%s: device in use by another fh\n", __func__);
return -EBUSY;
}
/* set new image size */
dev->width = f->fmt.pix.width;
dev->height = f->fmt.pix.height;
dev->format = fmt;
v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
call_all(dev, pad, set_fmt, NULL, &format);
v4l2_fill_pix_format(&f->fmt.pix, &format.format);
return rc;
}
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
*id = dev->norm;
return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (dev->norm == norm)
return 0;
if (videobuf_queue_is_busy(&fh->vb_vidq))
return -EBUSY;
dev->norm = norm;
/* Adjusts width/height, if needed */
dev->width = 720;
dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
call_all(dev, video, s_std, dev->norm);
/* We need to reset basic properties in the decoder related to
resolution (since a standard change effects things like the number
of lines in VACT, etc) */
format.format.code = MEDIA_BUS_FMT_FIXED;
format.format.width = dev->width;
format.format.height = dev->height;
call_all(dev, pad, set_fmt, NULL, &format);
/* do mode control overrides */
cx231xx_do_mode_ctrl_overrides(dev);
return 0;
}
static const char *iname[] = {
[CX231XX_VMUX_COMPOSITE1] = "Composite1",
[CX231XX_VMUX_SVIDEO] = "S-Video",
[CX231XX_VMUX_TELEVISION] = "Television",
[CX231XX_VMUX_CABLE] = "Cable TV",
[CX231XX_VMUX_DVB] = "DVB",
[CX231XX_VMUX_DEBUG] = "for debug only",
};
int cx231xx_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
u32 gen_stat;
unsigned int n;
int ret;
n = i->index;
if (n >= MAX_CX231XX_INPUT)
return -EINVAL;
if (0 == INPUT(n)->type)
return -EINVAL;
i->index = n;
i->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(i->name, iname[INPUT(n)->type]);
if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
(CX231XX_VMUX_CABLE == INPUT(n)->type))
i->type = V4L2_INPUT_TYPE_TUNER;
i->std = dev->vdev.tvnorms;
/* If they are asking about the active input, read signal status */
if (n == dev->video_input) {
ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
GEN_STAT, 2, &gen_stat, 4);
if (ret > 0) {
if ((gen_stat & FLD_VPRES) == 0x00)
i->status |= V4L2_IN_ST_NO_SIGNAL;
if ((gen_stat & FLD_HLOCK) == 0x00)
i->status |= V4L2_IN_ST_NO_H_LOCK;
}
}
return 0;
}
int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
*i = dev->video_input;
return 0;
}
int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
dev->mode_tv = 0;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (i >= MAX_CX231XX_INPUT)
return -EINVAL;
if (0 == INPUT(i)->type)
return -EINVAL;
video_mux(dev, i);
if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
INPUT(i)->type == CX231XX_VMUX_CABLE) {
/* There's a tuner, so reset the standard and put it on the
last known frequency (since it was probably powered down
until now */
call_all(dev, video, s_std, dev->norm);
}
return 0;
}
int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Tuner");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL;
t->signal = 0xffff; /* LOCKED */
call_all(dev, tuner, g_tuner, t);
return 0;
}
int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (0 != t->index)
return -EINVAL;
#if 0
call_all(dev, tuner, s_tuner, t);
#endif
return 0;
}
int cx231xx_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
if (f->tuner)
return -EINVAL;
f->frequency = dev->ctl_freq;
return 0;
}
int cx231xx_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
struct v4l2_frequency new_freq = *f;
int rc;
u32 if_frequency = 5400000;
dev_dbg(dev->dev,
"Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
f->frequency, f->type);
rc = check_dev(dev);
if (rc < 0)
return rc;
if (0 != f->tuner)
return -EINVAL;
/* set pre channel change settings in DIF first */
rc = cx231xx_tuner_pre_channel_change(dev);
call_all(dev, tuner, s_frequency, f);
call_all(dev, tuner, g_frequency, &new_freq);
dev->ctl_freq = new_freq.frequency;
/* 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 */
dev_dbg(dev->dev,
"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);
}
dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
return rc;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
int cx231xx_g_chip_info(struct file *file, void *fh,
struct v4l2_dbg_chip_info *chip)
{
switch (chip->match.addr) {
case 0: /* Cx231xx - internal registers */
return 0;
case 1: /* AFE - read byte */
strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
return 0;
case 2: /* Video Block - read byte */
strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
return 0;
case 3: /* I2S block - read byte */
strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
return 0;
case 4: /* AFE - read dword */
strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
return 0;
case 5: /* Video Block - read dword */
strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
return 0;
case 6: /* I2S Block - read dword */
strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
return 0;
}
return -EINVAL;
}
int cx231xx_g_register(struct file *file, void *priv,
struct v4l2_dbg_register *reg)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int ret;
u8 value[4] = { 0, 0, 0, 0 };
u32 data = 0;
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;
reg->size = 4;
break;
case 1: /* AFE - read byte */
ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
(u16)reg->reg, 2, &data, 1);
reg->val = data;
reg->size = 1;
break;
case 2: /* Video Block - read byte */
ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
(u16)reg->reg, 2, &data, 1);
reg->val = data;
reg->size = 1;
break;
case 3: /* I2S block - read byte */
ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
(u16)reg->reg, 1, &data, 1);
reg->val = data;
reg->size = 1;
break;
case 4: /* AFE - read dword */
ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
(u16)reg->reg, 2, &data, 4);
reg->val = data;
reg->size = 4;
break;
case 5: /* Video Block - read dword */
ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
(u16)reg->reg, 2, &data, 4);
reg->val = data;
reg->size = 4;
break;
case 6: /* I2S Block - read dword */
ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
(u16)reg->reg, 1, &data, 4);
reg->val = data;
reg->size = 4;
break;
default:
return -EINVAL;
}
return ret < 0 ? ret : 0;
}
int cx231xx_s_register(struct file *file, void *priv,
const struct v4l2_dbg_register *reg)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int ret;
u8 data[4] = { 0, 0, 0, 0 };
switch (reg->match.addr) {
case 0: /* cx231xx internal registers */
data[0] = (u8) reg->val;
data[1] = (u8) (reg->val >> 8);
data[2] = (u8) (reg->val >> 16);
data[3] = (u8) (reg->val >> 24);
ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
(u16)reg->reg, data, 4);
break;
case 1: /* AFE - write byte */
ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
(u16)reg->reg, 2, reg->val, 1);
break;
case 2: /* Video Block - write byte */
ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
(u16)reg->reg, 2, reg->val, 1);
break;
case 3: /* I2S block - write byte */
ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
(u16)reg->reg, 1, reg->val, 1);
break;
case 4: /* AFE - write dword */
ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
(u16)reg->reg, 2, reg->val, 4);
break;
case 5: /* Video Block - write dword */
ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
(u16)reg->reg, 2, reg->val, 4);
break;
case 6: /* I2S block - write dword */
ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
(u16)reg->reg, 1, reg->val, 4);
break;
default:
return -EINVAL;
}
return ret < 0 ? ret : 0;
}
#endif
static int vidioc_cropcap(struct file *file, void *priv,
struct v4l2_cropcap *cc)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
cc->bounds.left = 0;
cc->bounds.top = 0;
cc->bounds.width = dev->width;
cc->bounds.height = dev->height;
cc->defrect = cc->bounds;
cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
cc->pixelaspect.denominator = 59;
return 0;
}
static int vidioc_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
rc = res_get(fh);
if (likely(rc >= 0))
rc = videobuf_streamon(&fh->vb_vidq);
call_all(dev, video, s_stream, 1);
return rc;
}
static int vidioc_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (type != fh->type)
return -EINVAL;
cx25840_call(dev, video, s_stream, 0);
videobuf_streamoff(&fh->vb_vidq);
res_free(fh);
return 0;
}
int cx231xx_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct video_device *vdev = video_devdata(file);
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
if (vdev->vfl_type == VFL_TYPE_RADIO)
cap->device_caps = V4L2_CAP_RADIO;
else {
cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
if (vdev->vfl_type == VFL_TYPE_VBI)
cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
else
cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
}
if (dev->tuner_type != TUNER_ABSENT)
cap->device_caps |= V4L2_CAP_TUNER;
cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
if (video_is_registered(&dev->radio_dev))
cap->capabilities |= V4L2_CAP_RADIO;
return 0;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (unlikely(f->index >= ARRAY_SIZE(format)))
return -EINVAL;
strlcpy(f->description, format[f->index].name, sizeof(f->description));
f->pixelformat = format[f->index].fourcc;
return 0;
}
/* RAW VBI ioctls */
static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
f->fmt.vbi.sampling_rate = 6750000 * 4;
f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
f->fmt.vbi.offset = 0;
f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
PAL_VBI_LINES : NTSC_VBI_LINES;
f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
return 0;
}
static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
f->fmt.vbi.sampling_rate = 6750000 * 4;
f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
f->fmt.vbi.offset = 0;
f->fmt.vbi.flags = 0;
f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
PAL_VBI_LINES : NTSC_VBI_LINES;
f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
return 0;
}
static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
if (dev->vbi_stream_on && !fh->stream_on) {
dev_err(dev->dev,
"%s device in use by another fh\n", __func__);
return -EBUSY;
}
return vidioc_try_fmt_vbi_cap(file, priv, f);
}
static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_reqbufs(&fh->vb_vidq, rb);
}
static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_querybuf(&fh->vb_vidq, b);
}
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_qbuf(&fh->vb_vidq, b);
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct cx231xx_fh *fh = priv;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
}
/* ----------------------------------------------------------- */
/* RADIO ESPECIFIC IOCTLS */
/* ----------------------------------------------------------- */
static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
{
struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
if (t->index)
return -EINVAL;
strcpy(t->name, "Radio");
call_all(dev, tuner, g_tuner, t);
return 0;
}
static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
{
struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
if (t->index)
return -EINVAL;
call_all(dev, tuner, s_tuner, t);
return 0;
}
/*
* cx231xx_v4l2_open()
* inits the device and starts isoc transfer
*/
static int cx231xx_v4l2_open(struct file *filp)
{
int radio = 0;
struct video_device *vdev = video_devdata(filp);
struct cx231xx *dev = video_drvdata(filp);
struct cx231xx_fh *fh;
enum v4l2_buf_type fh_type = 0;
switch (vdev->vfl_type) {
case VFL_TYPE_GRABBER:
fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
break;
case VFL_TYPE_VBI:
fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
break;
case VFL_TYPE_RADIO:
radio = 1;
break;
}
cx231xx_videodbg("open dev=%s type=%s users=%d\n",
video_device_node_name(vdev), v4l2_type_names[fh_type],
dev->users);
#if 0
errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
if (errCode < 0) {
dev_err(dev->dev,
"Device locked on digital mode. Can't open analog\n");
return -EBUSY;
}
#endif
fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
if (!fh)
return -ENOMEM;
if (mutex_lock_interruptible(&dev->lock)) {
kfree(fh);
return -ERESTARTSYS;
}
fh->dev = dev;
fh->type = fh_type;
filp->private_data = fh;
v4l2_fh_init(&fh->fh, vdev);
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
/* Power up in Analog TV mode */
if (dev->board.external_av)
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);
#endif
/* set video alternate setting */
cx231xx_set_video_alternate(dev);
/* Needed, since GPIO might have disabled power of
some i2c device */
cx231xx_config_i2c(dev);
/* device needs to be initialized before isoc transfer */
dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
}
if (radio) {
cx231xx_videodbg("video_open: setting radio device\n");
/* cx231xx_start_radio(dev); */
call_all(dev, tuner, s_radio);
}
dev->users++;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
NULL, &dev->video_mode.slock,
fh->type, V4L2_FIELD_INTERLACED,
sizeof(struct cx231xx_buffer),
fh, &dev->lock);
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);
videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
NULL, &dev->vbi_mode.slock,
fh->type, V4L2_FIELD_SEQ_TB,
sizeof(struct cx231xx_buffer),
fh, &dev->lock);
}
mutex_unlock(&dev->lock);
v4l2_fh_add(&fh->fh);
return 0;
}
/*
* cx231xx_realease_resources()
* unregisters the v4l2,i2c and usb devices
* called when the device gets disconected or at module unload
*/
void cx231xx_release_analog_resources(struct cx231xx *dev)
{
/*FIXME: I2C IR should be disconnected */
if (video_is_registered(&dev->radio_dev))
video_unregister_device(&dev->radio_dev);
if (video_is_registered(&dev->vbi_dev)) {
dev_info(dev->dev, "V4L2 device %s deregistered\n",
video_device_node_name(&dev->vbi_dev));
video_unregister_device(&dev->vbi_dev);
}
if (video_is_registered(&dev->vdev)) {
dev_info(dev->dev, "V4L2 device %s deregistered\n",
video_device_node_name(&dev->vdev));
if (dev->board.has_417)
cx231xx_417_unregister(dev);
video_unregister_device(&dev->vdev);
}
v4l2_ctrl_handler_free(&dev->ctrl_handler);
v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
}
/*
* cx231xx_close()
* stops streaming and deallocates all resources allocated by the v4l2
* calls and ioctls
*/
static int cx231xx_close(struct file *filp)
{
struct cx231xx_fh *fh = filp->private_data;
struct cx231xx *dev = fh->dev;
cx231xx_videodbg("users=%d\n", dev->users);
cx231xx_videodbg("users=%d\n", dev->users);
if (res_check(fh))
res_free(fh);
/*
* To workaround error number=-71 on EP0 for VideoGrabber,
* need exclude following.
* FIXME: It is probably safe to remove most of these, as we're
* now avoiding the alternate setting for INDEX_VANC
*/
if (!dev->board.no_alt_vanc)
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);
fh->dev = NULL;
return 0;
}
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);
v4l2_fh_del(&fh->fh);
v4l2_fh_exit(&fh->fh);
kfree(fh);
dev->users--;
wake_up_interruptible(&dev->open);
return 0;
}
v4l2_fh_del(&fh->fh);
dev->users--;
if (!dev->users) {
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) {
cx231xx_release_resources(dev);
fh->dev = NULL;
return 0;
}
/* Save some power by putting tuner to sleep */
call_all(dev, core, s_power, 0);
/* do this before setting alternate! */
if (dev->USE_ISO)
cx231xx_uninit_isoc(dev);
else
cx231xx_uninit_bulk(dev);
cx231xx_set_mode(dev, CX231XX_SUSPEND);
/* set alternate 0 */
cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
}
v4l2_fh_exit(&fh->fh);
kfree(fh);
wake_up_interruptible(&dev->open);
return 0;
}
static int cx231xx_v4l2_close(struct file *filp)
{
struct cx231xx_fh *fh = filp->private_data;
struct cx231xx *dev = fh->dev;
int rc;
mutex_lock(&dev->lock);
rc = cx231xx_close(filp);
mutex_unlock(&dev->lock);
return rc;
}
/*
* cx231xx_v4l2_read()
* will allocate buffers when called for the first time
*/
static ssize_t
cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct cx231xx_fh *fh = filp->private_data;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
(fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
rc = res_get(fh);
if (unlikely(rc < 0))
return rc;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
filp->f_flags & O_NONBLOCK);
mutex_unlock(&dev->lock);
return rc;
}
return 0;
}
/*
* cx231xx_v4l2_poll()
* will allocate buffers when called for the first time
*/
static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
{
unsigned long req_events = poll_requested_events(wait);
struct cx231xx_fh *fh = filp->private_data;
struct cx231xx *dev = fh->dev;
unsigned res = 0;
int rc;
rc = check_dev(dev);
if (rc < 0)
return POLLERR;
rc = res_get(fh);
if (unlikely(rc < 0))
return POLLERR;
if (v4l2_event_pending(&fh->fh))
res |= POLLPRI;
else
poll_wait(filp, &fh->fh.wait, wait);
if (!(req_events & (POLLIN | POLLRDNORM)))
return res;
if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
(V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
mutex_lock(&dev->lock);
res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
mutex_unlock(&dev->lock);
return res;
}
return res | POLLERR;
}
/*
* cx231xx_v4l2_mmap()
*/
static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct cx231xx_fh *fh = filp->private_data;
struct cx231xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
rc = res_get(fh);
if (unlikely(rc < 0))
return rc;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
mutex_unlock(&dev->lock);
cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
(unsigned long)vma->vm_start,
(unsigned long)vma->vm_end -
(unsigned long)vma->vm_start, rc);
return rc;
}
static const struct v4l2_file_operations cx231xx_v4l_fops = {
.owner = THIS_MODULE,
.open = cx231xx_v4l2_open,
.release = cx231xx_v4l2_close,
.read = cx231xx_v4l2_read,
.poll = cx231xx_v4l2_poll,
.mmap = cx231xx_v4l2_mmap,
.unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_querycap = cx231xx_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
.vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,
.vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,
.vidioc_cropcap = vidioc_cropcap,
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_s_std = vidioc_s_std,
.vidioc_g_std = vidioc_g_std,
.vidioc_enum_input = cx231xx_enum_input,
.vidioc_g_input = cx231xx_g_input,
.vidioc_s_input = cx231xx_s_input,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_g_tuner = cx231xx_g_tuner,
.vidioc_s_tuner = cx231xx_s_tuner,
.vidioc_g_frequency = cx231xx_g_frequency,
.vidioc_s_frequency = cx231xx_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_chip_info = cx231xx_g_chip_info,
.vidioc_g_register = cx231xx_g_register,
.vidioc_s_register = cx231xx_s_register,
#endif
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device cx231xx_vbi_template;
static const struct video_device cx231xx_video_template = {
.fops = &cx231xx_v4l_fops,
.release = video_device_release_empty,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = V4L2_STD_ALL,
};
static const struct v4l2_file_operations radio_fops = {
.owner = THIS_MODULE,
.open = cx231xx_v4l2_open,
.release = cx231xx_v4l2_close,
.poll = v4l2_ctrl_poll,
.unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops radio_ioctl_ops = {
.vidioc_querycap = cx231xx_querycap,
.vidioc_g_tuner = radio_g_tuner,
.vidioc_s_tuner = radio_s_tuner,
.vidioc_g_frequency = cx231xx_g_frequency,
.vidioc_s_frequency = cx231xx_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_chip_info = cx231xx_g_chip_info,
.vidioc_g_register = cx231xx_g_register,
.vidioc_s_register = cx231xx_s_register,
#endif
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static struct video_device cx231xx_radio_template = {
.name = "cx231xx-radio",
.fops = &radio_fops,
.ioctl_ops = &radio_ioctl_ops,
};
/******************************** usb interface ******************************/
static void cx231xx_vdev_init(struct cx231xx *dev,
struct video_device *vfd,
const struct video_device *template,
const char *type_name)
{
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->release = video_device_release_empty;
vfd->lock = &dev->lock;
snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
video_set_drvdata(vfd, dev);
if (dev->tuner_type == TUNER_ABSENT) {
v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
}
}
int cx231xx_register_analog_devices(struct cx231xx *dev)
{
int ret;
dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
/* set default norm */
dev->norm = V4L2_STD_PAL;
dev->width = norm_maxw(dev);
dev->height = norm_maxh(dev);
dev->interlaced = 0;
/* Analog specific initialization */
dev->format = &format[0];
/* Set the initial input */
video_mux(dev, dev->video_input);
call_all(dev, video, s_std, dev->norm);
v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
if (dev->sd_cx25840) {
v4l2_ctrl_add_handler(&dev->ctrl_handler,
dev->sd_cx25840->ctrl_handler, NULL);
v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
dev->sd_cx25840->ctrl_handler,
v4l2_ctrl_radio_filter);
}
if (dev->ctrl_handler.error)
return dev->ctrl_handler.error;
if (dev->radio_ctrl_handler.error)
return dev->radio_ctrl_handler.error;
/* enable vbi capturing */
/* write code here... */
/* allocate and fill video video_device struct */
cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->video_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
if (ret < 0)
dev_err(dev->dev, "failed to initialize video media entity!\n");
#endif
dev->vdev.ctrl_handler = &dev->ctrl_handler;
/* register v4l2 video video_device */
ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
video_nr[dev->devno]);
if (ret) {
dev_err(dev->dev,
"unable to register video device (error=%i).\n",
ret);
return ret;
}
dev_info(dev->dev, "Registered video device %s [v4l2]\n",
video_device_node_name(&dev->vdev));
/* Initialize VBI template */
cx231xx_vbi_template = cx231xx_video_template;
strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
/* Allocate and fill vbi video_device struct */
cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
if (ret < 0)
dev_err(dev->dev, "failed to initialize vbi media entity!\n");
#endif
dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
/* register v4l2 vbi video_device */
ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->devno]);
if (ret < 0) {
dev_err(dev->dev, "unable to register vbi device\n");
return ret;
}
dev_info(dev->dev, "Registered VBI device %s\n",
video_device_node_name(&dev->vbi_dev));
if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
cx231xx_vdev_init(dev, &dev->radio_dev,
&cx231xx_radio_template, "radio");
dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
radio_nr[dev->devno]);
if (ret < 0) {
dev_err(dev->dev,
"can't register radio device\n");
return ret;
}
dev_info(dev->dev, "Registered radio device as %s\n",
video_device_node_name(&dev->radio_dev));
}
return 0;
}
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