Julian Scheel wrote:
> Attached is a patch with adds full support for suspend/resume in budget-av.
> Actually only the CI interface needs to be reinitialised as all the tuner
> stuff gets reinitialised at the next tuning-process anyway.
> So this patch should be ready to go pretty straightforward into head.
Please post the sub-system ids of the cards you tested and which power
states you tested.
> diff -r c45e373bbca3 linux/drivers/media/common/saa7146_core.c
> --- a/linux/drivers/media/common/saa7146_core.c Sat Jul 28 00:06:44 2007 -0300
> +++ b/linux/drivers/media/common/saa7146_core.c Tue Aug 07 23:22:54 2007 +0200
> @@ -515,6 +515,28 @@ static void saa7146_remove_one(struct pc
> saa7146_num--;
> }
>
> +static int saa7146_suspend(struct pci_dev *pdev)
> +{
> + struct saa7146_dev* dev = pci_get_drvdata(pdev);
> + DEB_EE(("dev:%p\n",dev));
> + int err;
> +
> + err = dev->ext->suspend(dev);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Causes an oops if the card driver did not set the suspend hook.
Fix:
int err = -EBUSY;
if (dev->ext->suspend)
err = dev->ext->suspend(dev);
> +
> + return err;
> +}
> +
> +static int saa7146_resume(struct pci_dev *pdev)
> +{
> + struct saa7146_dev* dev = pci_get_drvdata(pdev);
> + DEB_EE(("dev:%p\n",dev));
> + int err;
> +
> + err = dev->ext->resume(dev);
ditto
IMO this patch can only work with S1 state. Higher states turn off PCI
power and require re-initialization of saa7146, demod, tuner etc.
See other drivers which fully implement suspend/resume.
CU
Oliver
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