static __init int vpif_probe(struct platform_device *pdev)
{
struct vpif_subdev_info *subdevdata;
struct vpif_capture_config *config;
int i, j, k, m, q, err;
struct i2c_adapter *i2c_adap;
struct channel_obj *ch;
struct common_obj *common;
struct video_device *vfd;
struct resource *res;
int subdev_count;
vpif_dev = &pdev->dev;
err = initialize_vpif();
if (err) {
v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
return err;
}
k = 0;
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
for (i = res->start; i <= res->end; i++) {
if (request_irq(i, vpif_channel_isr, IRQF_DISABLED,
"DM646x_Capture",
(void *)(&vpif_obj.dev[k]->channel_id))) {
err = -EBUSY;
i--;
goto vpif_int_err;
}
}
k++;
}
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
/* Get the pointer to the channel object */
ch = vpif_obj.dev[i];
/* Allocate memory for video device */
vfd = video_device_alloc();
if (NULL == vfd) {
for (j = 0; j < i; j++) {
ch = vpif_obj.dev[j];
video_device_release(ch->video_dev);
}
err = -ENOMEM;
goto vpif_dev_alloc_err;
}
/* Initialize field of video device */
*vfd = vpif_video_template;
vfd->v4l2_dev = &vpif_obj.v4l2_dev;
vfd->release = video_device_release;
snprintf(vfd->name, sizeof(vfd->name),
"DM646x_VPIFCapture_DRIVER_V%d.%d.%d",
(VPIF_CAPTURE_VERSION_CODE >> 16) & 0xff,
(VPIF_CAPTURE_VERSION_CODE >> 8) & 0xff,
(VPIF_CAPTURE_VERSION_CODE) & 0xff);
/* Set video_dev to the video device */
ch->video_dev = vfd;
}
for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
ch = vpif_obj.dev[j];
ch->channel_id = j;
common = &(ch->common[VPIF_VIDEO_INDEX]);
spin_lock_init(&common->irqlock);
mutex_init(&common->lock);
/* Initialize prio member of channel object */
v4l2_prio_init(&ch->prio);
err = video_register_device(ch->video_dev,
VFL_TYPE_GRABBER, (j ? 1 : 0));
if (err)
goto probe_out;
video_set_drvdata(ch->video_dev, ch);
}
i2c_adap = i2c_get_adapter(1);
config = pdev->dev.platform_data;
subdev_count = config->subdev_count;
vpif_obj.sd = kmalloc(sizeof(struct v4l2_subdev *) * subdev_count,
GFP_KERNEL);
if (vpif_obj.sd == NULL) {
vpif_err("unable to allocate memory for subdevice pointers\n");
err = -ENOMEM;
goto probe_out;
}
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
if (err) {
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
goto probe_subdev_out;
}
for (i = 0; i < subdev_count; i++) {
subdevdata = &config->subdev_info[i];
vpif_obj.sd[i] =
v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
i2c_adap,
subdevdata->name,
&subdevdata->board_info,
NULL);
if (!vpif_obj.sd[i]) {
vpif_err("Error registering v4l2 subdevice\n");
goto probe_subdev_out;
}
v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n",
subdevdata->name);
if (vpif_obj.sd[i])
vpif_obj.sd[i]->grp_id = 1 << i;
}
v4l2_info(&vpif_obj.v4l2_dev, "DM646x VPIF Capture driver"
" initialized\n");
return 0;
probe_subdev_out:
/* free sub devices memory */
kfree(vpif_obj.sd);
j = VPIF_CAPTURE_MAX_DEVICES;
probe_out:
v4l2_device_unregister(&vpif_obj.v4l2_dev);
for (k = 0; k < j; k++) {
/* Get the pointer to the channel object */
ch = vpif_obj.dev[k];
/* Unregister video device */
video_unregister_device(ch->video_dev);
}
vpif_dev_alloc_err:
k = VPIF_CAPTURE_MAX_DEVICES-1;
res = platform_get_resource(pdev, IORESOURCE_IRQ, k);
i = res->end;
vpif_int_err:
for (q = k; q >= 0; q--) {
for (m = i; m >= (int)res->start; m--)
free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id));
res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1);
if (res)
i = res->end;
}
return err;
}
/*
* vpif_probe: This function creates device entries by register itself to the
* V4L2 driver and initializes fields of each channel objects
*/
static __init int vpif_probe(struct platform_device *pdev)
{
struct vpif_subdev_info *subdevdata;
struct vpif_display_config *config;
int i, j = 0, k, q, m, err = 0;
struct i2c_adapter *i2c_adap;
struct common_obj *common;
struct channel_obj *ch;
struct video_device *vfd;
struct resource *res;
int subdev_count;
vpif_dev = &pdev->dev;
err = initialize_vpif();
if (err) {
v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
return err;
}
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
if (err) {
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
return err;
}
k = 0;
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
for (i = res->start; i <= res->end; i++) {
if (request_irq(i, vpif_channel_isr, IRQF_DISABLED,
"DM646x_Display",
(void *)(&vpif_obj.dev[k]->channel_id))) {
err = -EBUSY;
goto vpif_int_err;
}
}
k++;
}
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
/* Get the pointer to the channel object */
ch = vpif_obj.dev[i];
/* Allocate memory for video device */
vfd = video_device_alloc();
if (vfd == NULL) {
for (j = 0; j < i; j++) {
ch = vpif_obj.dev[j];
video_device_release(ch->video_dev);
}
err = -ENOMEM;
goto vpif_int_err;
}
/* Initialize field of video device */
*vfd = vpif_video_template;
vfd->v4l2_dev = &vpif_obj.v4l2_dev;
vfd->release = video_device_release;
snprintf(vfd->name, sizeof(vfd->name),
"DM646x_VPIFDisplay_DRIVER_V%d.%d.%d",
(VPIF_DISPLAY_VERSION_CODE >> 16) & 0xff,
(VPIF_DISPLAY_VERSION_CODE >> 8) & 0xff,
(VPIF_DISPLAY_VERSION_CODE) & 0xff);
/* Set video_dev to the video device */
ch->video_dev = vfd;
}
for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
ch = vpif_obj.dev[j];
/* Initialize field of the channel objects */
atomic_set(&ch->usrs, 0);
for (k = 0; k < VPIF_NUMOBJECTS; k++) {
ch->common[k].numbuffers = 0;
common = &ch->common[k];
common->io_usrs = 0;
common->started = 0;
spin_lock_init(&common->irqlock);
mutex_init(&common->lock);
common->numbuffers = 0;
common->set_addr = NULL;
common->ytop_off = common->ybtm_off = 0;
common->ctop_off = common->cbtm_off = 0;
common->cur_frm = common->next_frm = NULL;
memset(&common->fmt, 0, sizeof(common->fmt));
common->numbuffers = config_params.numbuffers[k];
}
ch->initialized = 0;
ch->channel_id = j;
if (j < 2)
ch->common[VPIF_VIDEO_INDEX].numbuffers =
config_params.numbuffers[ch->channel_id];
else
ch->common[VPIF_VIDEO_INDEX].numbuffers = 0;
memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
/* Initialize prio member of channel object */
v4l2_prio_init(&ch->prio);
ch->common[VPIF_VIDEO_INDEX].fmt.type =
V4L2_BUF_TYPE_VIDEO_OUTPUT;
ch->video_dev->lock = &common->lock;
/* register video device */
vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
(int)ch, (int)&ch->video_dev);
err = video_register_device(ch->video_dev,
VFL_TYPE_GRABBER, (j ? 3 : 2));
if (err < 0)
goto probe_out;
video_set_drvdata(ch->video_dev, ch);
}
i2c_adap = i2c_get_adapter(1);
config = pdev->dev.platform_data;
subdev_count = config->subdev_count;
subdevdata = config->subdevinfo;
vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
GFP_KERNEL);
if (vpif_obj.sd == NULL) {
vpif_err("unable to allocate memory for subdevice pointers\n");
err = -ENOMEM;
goto probe_out;
}
for (i = 0; i < subdev_count; i++) {
vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
i2c_adap,
&subdevdata[i].board_info,
NULL);
if (!vpif_obj.sd[i]) {
vpif_err("Error registering v4l2 subdevice\n");
goto probe_subdev_out;
}
if (vpif_obj.sd[i])
vpif_obj.sd[i]->grp_id = 1 << i;
}
v4l2_info(&vpif_obj.v4l2_dev,
"DM646x VPIF display driver initialized\n");
return 0;
probe_subdev_out:
kfree(vpif_obj.sd);
probe_out:
for (k = 0; k < j; k++) {
ch = vpif_obj.dev[k];
video_unregister_device(ch->video_dev);
video_device_release(ch->video_dev);
ch->video_dev = NULL;
}
vpif_int_err:
v4l2_device_unregister(&vpif_obj.v4l2_dev);
vpif_err("VPIF IRQ request failed\n");
for (q = k; k >= 0; k--) {
for (m = i; m >= res->start; m--)
free_irq(m, (void *)(&vpif_obj.dev[k]->channel_id));
res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1);
m = res->end;
}
return err;
}
