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authorHans Verkuil <hverkuil@xs4all.nl>2007-03-11 14:16:42 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-04-27 15:44:35 -0300
commitfee73165ee0ff7cfbffad4233a70f56b821f434e (patch)
tree2228c47e5540cd3b362a6ae4a40712a5573d9fe2 /drivers/media/video/ivtv
parent6816b1991fd4bcb457c9534e8136476e45bfee0a (diff)
V4L/DVB (5420): Initialize the inputs before registering the devices.
Once the devices have been registered anyone can start changing the inputs or TV standard before they have been initialized by the driver. This leads to cases were the input is changed in an udev rule, but after that rule is triggered the tail-end of the ivtv driver initialization can override that by selecting the tuner input. The correct sequence is to first setup the input, initial frequency and TV standard before finally registering the video devices. This prevents any udev rules from being triggered prematurely. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/ivtv')
-rw-r--r--drivers/media/video/ivtv/ivtv-driver.c77
1 files changed, 37 insertions, 40 deletions
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index d00811a820f..c7648e2a3a6 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -1134,46 +1134,6 @@ static int __devinit ivtv_probe(struct pci_dev *dev,
if (itv->options.radio > 0)
itv->v4l2_cap |= V4L2_CAP_RADIO;
- retval = ivtv_streams_setup(itv);
- if (retval) {
- IVTV_ERR("Error %d setting up streams\n", retval);
- goto free_i2c;
- }
-
- /* Start Threads */
- IVTV_DEBUG_INFO("Starting Threads\n");
-
- /* Decoder Thread */
- if (itv->card->v4l2_capabilities & V4L2_CAP_VIDEO_OUTPUT) {
- ivtv_init_mpeg_decoder(itv);
- }
-
- IVTV_DEBUG_IRQ("Masking interrupts\n");
- /* clear interrupt mask, effectively disabling interrupts */
- ivtv_set_irq_mask(itv, 0xffffffff);
-
- /* Register IRQ */
- retval = request_irq(itv->dev->irq, ivtv_irq_handler,
- IRQF_SHARED | IRQF_DISABLED, itv->name, (void *)itv);
- if (retval) {
- IVTV_ERR("Failed to register irq %d\n", retval);
- goto free_streams;
- }
-
- /* On a cx23416 this seems to be able to enable DMA to the chip? */
- if (!itv->has_cx23415)
- write_reg_sync(0x03, IVTV_REG_DMACONTROL);
-
- /* Default interrupts enabled. For the PVR350 this includes the
- decoder VSYNC interrupt, which is always on. It is not only used
- during decoding but also by the OSD.
- Some old PVR250 cards had a cx23415, so testing for that is too
- general. Instead test if the card has video output capability. */
- if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
- ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT | IVTV_IRQ_DEC_VSYNC);
- else
- ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT);
-
if (itv->options.tuner > -1) {
struct tuner_setup setup;
@@ -1212,6 +1172,43 @@ static int __devinit ivtv_probe(struct pci_dev *dev,
itv->std_out = itv->std;
ivtv_v4l2_ioctls(itv, NULL, VIDIOC_S_STD, &itv->tuner_std);
ivtv_v4l2_ioctls(itv, NULL, VIDIOC_S_FREQUENCY, &vf);
+
+ retval = ivtv_streams_setup(itv);
+ if (retval) {
+ IVTV_ERR("Error %d setting up streams\n", retval);
+ goto free_i2c;
+ }
+
+ if (itv->card->v4l2_capabilities & V4L2_CAP_VIDEO_OUTPUT) {
+ ivtv_init_mpeg_decoder(itv);
+ }
+
+ IVTV_DEBUG_IRQ("Masking interrupts\n");
+ /* clear interrupt mask, effectively disabling interrupts */
+ ivtv_set_irq_mask(itv, 0xffffffff);
+
+ /* Register IRQ */
+ retval = request_irq(itv->dev->irq, ivtv_irq_handler,
+ IRQF_SHARED | IRQF_DISABLED, itv->name, (void *)itv);
+ if (retval) {
+ IVTV_ERR("Failed to register irq %d\n", retval);
+ goto free_streams;
+ }
+
+ /* On a cx23416 this seems to be able to enable DMA to the chip? */
+ if (!itv->has_cx23415)
+ write_reg_sync(0x03, IVTV_REG_DMACONTROL);
+
+ /* Default interrupts enabled. For the PVR350 this includes the
+ decoder VSYNC interrupt, which is always on. It is not only used
+ during decoding but also by the OSD.
+ Some old PVR250 cards had a cx23415, so testing for that is too
+ general. Instead test if the card has video output capability. */
+ if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
+ ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT | IVTV_IRQ_DEC_VSYNC);
+ else
+ ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT);
+
if (itv->has_cx23415)
ivtv_set_osd_alpha(itv);