Attachment 30206 Details for Bug 24404 – disable the TV hotplug in course of TV detection

[patch] disable the TV hotplug in course of TV detection

tv_hotplug.patch (text/plain), 1.37 KB, created by ykzhao on 2009-10-09 00:50:32 UTC

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Creator: ykzhao

Created: 2009-10-09 00:50:32 UTC

Size: 1.37 KB

patch

obsolete

>Disable the TV hotplug interrupt in course of TV detection
>---
> drivers/gpu/drm/i915/intel_tv.c |    9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
>Index: linux-2.6/drivers/gpu/drm/i915/intel_tv.c
>===================================================================
>--- linux-2.6.orig/drivers/gpu/drm/i915/intel_tv.c	2009-10-09 11:38:43.000000000 +0800
>+++ linux-2.6/drivers/gpu/drm/i915/intel_tv.c	2009-10-09 15:24:39.000000000 +0800
>@@ -1372,6 +1372,7 @@
> 	u32 tv_ctl, save_tv_ctl;
> 	u32 tv_dac, save_tv_dac;
> 	int type = DRM_MODE_CONNECTOR_Unknown;
>+	unsigned int hotplug_en, hotplug_stat;
> 
> 	tv_dac = I915_READ(TV_DAC);
> 
>@@ -1380,7 +1381,9 @@
> 	i915_disable_pipestat(dev_priv, 0, PIPE_HOTPLUG_INTERRUPT_ENABLE |
> 			      PIPE_HOTPLUG_TV_INTERRUPT_ENABLE);
> 	spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
>-
>+	/* disable the TV hotplug */
>+	hotplug_en = I915_READ(PORT_HOTPLUG_EN);
>+	I915_WRITE(PORT_HOTPLUG_EN, hotplug_en & ~(TV_HOTPLUG_INT_EN));
> 	/*
> 	 * Detect TV by polling)
> 	 */
>@@ -1429,6 +1432,10 @@
> 		type = -1;
> 	}
> 
>+	/* clear the TV hotplug status bit */
>+	I915_WRITE(PORT_HOTPLUG_STAT, TV_HOTPLUG_INT_STATUS);
>+	/* Restore the TV hotplug interrupt setting */
>+	I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
> 	/* Restore interrupt config */
> 	spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
> 	i915_enable_pipestat(dev_priv, 0, PIPE_HOTPLUG_INTERRUPT_ENABLE |

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Attachments on bug 24404: 30206

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