diff options
Diffstat (limited to 'drivers/media/video/saa7164/saa7164-cmd.c')
| -rw-r--r-- | drivers/media/video/saa7164/saa7164-cmd.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/media/video/saa7164/saa7164-cmd.c b/drivers/media/video/saa7164/saa7164-cmd.c index cd3af4d4364..e097f1a0969 100644 --- a/drivers/media/video/saa7164/saa7164-cmd.c +++ b/drivers/media/video/saa7164/saa7164-cmd.c @@ -80,6 +80,43 @@ u32 saa7164_cmd_timeout_get(struct saa7164_dev *dev, u8 seqno) /* Commands to the f/w get marshelled to/from this code then onto the PCI * -bus/c running buffer. */ +int saa7164_irq_dequeue(struct saa7164_dev *dev) +{ + int ret = SAA_OK; + u32 timeout; + wait_queue_head_t *q = 0; + dprintk(DBGLVL_CMD, "%s()\n", __func__); + + /* While any outstand message on the bus exists... */ + do { + + /* Peek the msg bus */ + tmComResInfo_t tRsp = { 0, 0, 0, 0, 0, 0 }; + ret = saa7164_bus_get(dev, &tRsp, NULL, 1); + if (ret != SAA_OK) + break; + + q = &dev->cmds[tRsp.seqno].wait; + timeout = saa7164_cmd_timeout_get(dev, tRsp.seqno); + dprintk(DBGLVL_CMD, "%s() timeout = %d\n", __func__, timeout); + if (!timeout) { + dprintk(DBGLVL_CMD, + "%s() signalled seqno(%d) (for dequeue)\n", + __func__, tRsp.seqno); + dev->cmds[tRsp.seqno].signalled = 1; + wake_up(q); + } else { + printk(KERN_ERR + "%s() found timed out command on the bus\n", + __func__); + } + } while (0); + + return ret; +} + +/* Commands to the f/w get marshelled to/from this code then onto the PCI + * -bus/c running buffer. */ int saa7164_cmd_dequeue(struct saa7164_dev *dev) { int loop = 1; |