diff options
author | Mike Isely <isely@pobox.com> | 2008-04-21 03:47:43 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-24 14:09:49 -0300 |
commit | 1cb03b76d09d20accfa5c1664c16ba6566f539a0 (patch) | |
tree | 8c58f23151ab54f71472b80f6d0d29df25ddbb9f /drivers/media/video/pvrusb2/pvrusb2-v4l2.c | |
parent | d3f8d8fb304a8b9a81eae16ff7b50f5379f2437e (diff) | |
download | linux-1cb03b76d09d20accfa5c1664c16ba6566f539a0.tar.bz2 |
V4L/DVB (7719): pvrusb2: Implement input selection enforcement
In the pvrusb2 driver, different interfaces (e.g. V4L, DVB) have
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-v4l2.c')
-rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-v4l2.c | 52 |
1 files changed, 25 insertions, 27 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c index 249d7488e482..b415141b2859 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c +++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c @@ -57,7 +57,6 @@ struct pvr2_v4l2_fh { struct pvr2_v4l2_fh *vprev; wait_queue_head_t wait_data; int fw_mode_flag; - int prev_input_val; }; struct pvr2_v4l2 { @@ -900,20 +899,6 @@ static int pvr2_v4l2_release(struct inode *inode, struct file *file) v4l2_prio_close(&vp->prio, &fhp->prio); file->private_data = NULL; - /* Restore the previous input selection, if it makes sense - to do so. */ - if (fhp->dev_info->v4l_type == VFL_TYPE_RADIO) { - struct pvr2_ctrl *cp; - int pval; - cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); - pvr2_ctrl_get_value(cp,&pval); - /* Only restore if we're still selecting the radio */ - if (pval == PVR2_CVAL_INPUT_RADIO) { - pvr2_ctrl_set_value(cp,fhp->prev_input_val); - pvr2_hdw_commit_ctl(hdw); - } - } - if (fhp->vnext) { fhp->vnext->vprev = fhp->vprev; } else { @@ -944,6 +929,8 @@ static int pvr2_v4l2_open(struct inode *inode, struct file *file) struct pvr2_v4l2_fh *fhp; struct pvr2_v4l2 *vp; struct pvr2_hdw *hdw; + unsigned int input_mask = 0; + int ret = 0; dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase); @@ -969,6 +956,29 @@ static int pvr2_v4l2_open(struct inode *inode, struct file *file) pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp); pvr2_channel_init(&fhp->channel,vp->channel.mc_head); + if (dip->v4l_type == VFL_TYPE_RADIO) { + /* Opening device as a radio, legal input selection subset + is just the radio. */ + input_mask = (1 << PVR2_CVAL_INPUT_RADIO); + } else { + /* Opening the main V4L device, legal input selection + subset includes all analog inputs. */ + input_mask = ((1 << PVR2_CVAL_INPUT_RADIO) | + (1 << PVR2_CVAL_INPUT_TV) | + (1 << PVR2_CVAL_INPUT_COMPOSITE) | + (1 << PVR2_CVAL_INPUT_SVIDEO)); + } + ret = pvr2_channel_limit_inputs(&fhp->channel,input_mask); + if (ret) { + pvr2_channel_done(&fhp->channel); + pvr2_trace(PVR2_TRACE_STRUCT, + "Destroying pvr_v4l2_fh id=%p (input mask error)", + fhp); + + kfree(fhp); + return ret; + } + fhp->vnext = NULL; fhp->vprev = vp->vlast; if (vp->vlast) { @@ -979,18 +989,6 @@ static int pvr2_v4l2_open(struct inode *inode, struct file *file) vp->vlast = fhp; fhp->vhead = vp; - /* Opening the /dev/radioX device implies a mode switch. - So execute that here. Note that you can get the - IDENTICAL effect merely by opening the normal video - device and setting the input appropriately. */ - if (dip->v4l_type == VFL_TYPE_RADIO) { - struct pvr2_ctrl *cp; - cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT); - pvr2_ctrl_get_value(cp,&fhp->prev_input_val); - pvr2_ctrl_set_value(cp,PVR2_CVAL_INPUT_RADIO); - pvr2_hdw_commit_ctl(hdw); - } - fhp->file = file; file->private_data = fhp; v4l2_prio_open(&vp->prio,&fhp->prio); |