Re: [PATCH 1/4] drm/i915: add support for vga_switcheroo reprobe

From: Chris Wilson
Date: Tue Jan 07 2014 - 05:43:43 EST


On Tue, Jan 07, 2014 at 03:28:40PM +0530, Ramkumar Ramachandra wrote:
> Cc: Andreas Heider <andreas@xxxxxxxx>
> Cc: Seth Forshee <seth.forshee@xxxxxxxxxxxxx>
> Original-patch-by: Andreas Heider <andreas@xxxxxxxx>
> Signed-off-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_dma.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
> index 5c64842..336a835b 100644
> --- a/drivers/gpu/drm/i915/i915_dma.c
> +++ b/drivers/gpu/drm/i915/i915_dma.c
> @@ -1265,6 +1265,12 @@ static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_
> }
> }
>
> +static void i915_switcheroo_reprobe(struct pci_dev *pdev)
> +{
> + struct drm_device *dev = pci_get_drvdata(pdev);
> + intel_fbdev_output_poll_changed(dev);
> +}

switcheroo should be sending a hotplug notification, which should
trigger both this kernel listener and userspace.
-Chris

--
Chris Wilson, Intel Open Source Technology Centre
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