From: Wu Fengguang <fengguang.wu@intel.com>
To: Keith Packard <keithp@keithp.com>
Cc: Takashi Iwai <tiwai@suse.de>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
LKML <linux-kernel@vger.kernel.org>,
"Wang, Zhenyu Z" <zhenyu.z.wang@intel.com>
Subject: [PATCH] drm/i915: DisplayPort hot remove notification to audio driver
Date: Fri, 9 Dec 2011 17:03:43 +0800 [thread overview]
Message-ID: <20111209090343.GA2320@localhost> (raw)
On DP monitor hot remove, clear DP_AUDIO_OUTPUT_ENABLE accordingly,
so that the audio driver will receive hot plug events and take action
to refresh its device state and ELD contents.
Note that the DP_AUDIO_OUTPUT_ENABLE bit may be enabled or disabled
only when the link training is complete and set to "Normal".
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 1 +
1 file changed, 1 insertion(+)
This works both on KMS console and gnome desktop.
Hot plug/unplug and DPMS on/off are all tested OK.
--- linux.orig/drivers/gpu/drm/i915/intel_dp.c 2011-12-09 16:51:21.000000000 +0800
+++ linux/drivers/gpu/drm/i915/intel_dp.c 2011-12-09 16:59:45.000000000 +0800
@@ -1771,6 +1771,7 @@ intel_dp_link_down(struct intel_dp *inte
intel_wait_for_vblank(dev, to_intel_crtc(crtc)->pipe);
}
+ DP &= ~DP_AUDIO_OUTPUT_ENABLE;
I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN);
POSTING_READ(intel_dp->output_reg);
msleep(intel_dp->panel_power_down_delay);
WARNING: multiple messages have this Message-ID (diff)
From: Wu Fengguang <fengguang.wu@intel.com>
To: Keith Packard <keithp@keithp.com>
Cc: Takashi Iwai <tiwai@suse.de>,
"Wang, Zhenyu Z" <zhenyu.z.wang@intel.com>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/i915: DisplayPort hot remove notification to audio driver
Date: Fri, 9 Dec 2011 17:03:43 +0800 [thread overview]
Message-ID: <20111209090343.GA2320@localhost> (raw)
On DP monitor hot remove, clear DP_AUDIO_OUTPUT_ENABLE accordingly,
so that the audio driver will receive hot plug events and take action
to refresh its device state and ELD contents.
Note that the DP_AUDIO_OUTPUT_ENABLE bit may be enabled or disabled
only when the link training is complete and set to "Normal".
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 1 +
1 file changed, 1 insertion(+)
This works both on KMS console and gnome desktop.
Hot plug/unplug and DPMS on/off are all tested OK.
--- linux.orig/drivers/gpu/drm/i915/intel_dp.c 2011-12-09 16:51:21.000000000 +0800
+++ linux/drivers/gpu/drm/i915/intel_dp.c 2011-12-09 16:59:45.000000000 +0800
@@ -1771,6 +1771,7 @@ intel_dp_link_down(struct intel_dp *inte
intel_wait_for_vblank(dev, to_intel_crtc(crtc)->pipe);
}
+ DP &= ~DP_AUDIO_OUTPUT_ENABLE;
I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN);
POSTING_READ(intel_dp->output_reg);
msleep(intel_dp->panel_power_down_delay);
next reply other threads:[~2011-12-09 9:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-09 9:03 Wu Fengguang [this message]
2011-12-09 9:03 ` [PATCH] drm/i915: DisplayPort hot remove notification to audio driver Wu Fengguang
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