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authorroot <root@rshg054.dnsready.net>2013-03-23 00:06:21 -0700
committerroot <root@rshg054.dnsready.net>2013-03-23 00:06:21 -0700
commita42cd7aaabfdb3ecc0a538548e8dbcc7ca860b2d (patch)
treebbea919c4d1e7d8d747e636040d0cd510c279d68 /kernels/linux-libre-pae/drm-i915-reorder-setup-sequence-to-have-irqs-for-output-setup.patch
parent6b3123e5628817e3cef9c44989dffd21c49b0817 (diff)
Sat Mar 23 00:06:20 PDT 2013
Diffstat (limited to 'kernels/linux-libre-pae/drm-i915-reorder-setup-sequence-to-have-irqs-for-output-setup.patch')
-rw-r--r--kernels/linux-libre-pae/drm-i915-reorder-setup-sequence-to-have-irqs-for-output-setup.patch124
1 files changed, 0 insertions, 124 deletions
diff --git a/kernels/linux-libre-pae/drm-i915-reorder-setup-sequence-to-have-irqs-for-output-setup.patch b/kernels/linux-libre-pae/drm-i915-reorder-setup-sequence-to-have-irqs-for-output-setup.patch
deleted file mode 100644
index 8dc354488..000000000
--- a/kernels/linux-libre-pae/drm-i915-reorder-setup-sequence-to-have-irqs-for-output-setup.patch
+++ /dev/null
@@ -1,124 +0,0 @@
-From 52d7ecedac3f96fb562cb482c139015372728638 Mon Sep 17 00:00:00 2001
-From: Daniel Vetter <daniel.vetter@ffwll.ch>
-Date: Sat, 1 Dec 2012 21:03:22 +0100
-Subject: drm/i915: reorder setup sequence to have irqs for output setup
-
-From: Daniel Vetter <daniel.vetter@ffwll.ch>
-
-commit 52d7ecedac3f96fb562cb482c139015372728638 upstream.
-
-Otherwise the new&shiny irq-driven gmbus and dp aux code won't work that
-well. Noticed since the dp aux code doesn't have an automatic fallback
-with a timeout (since the hw provides for that already).
-
-v2: Simple move drm_irq_install before intel_modeset_gem_init, as
-suggested by Ben Widawsky.
-
-v3: Now that interrupts are enabled before all connectors are fully
-set up, we might fall over serving a HPD interrupt while things are
-still being set up. Instead of jumping through massive hoops and
-complicating the code with a separate hpd irq enable step, simply
-block out the hotplug work item from doing anything until things are
-in place.
-
-v4: Actually, we can enable hotplug processing only after the fbdev is
-fully set up, since we call down into the fbdev from the hotplug work
-functions. So stick the hpd enabling right next to the poll helper
-initialization.
-
-v5: We need to enable irqs before intel_modeset_init, since that
-function sets up the outputs.
-
-v6: Fixup cleanup sequence, too.
-
-Reviewed-by: Imre Deak <imre.deak@intel.com>
-Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
----
- drivers/gpu/drm/i915/i915_dma.c | 23 ++++++++++++++---------
- drivers/gpu/drm/i915/i915_drv.h | 1 +
- drivers/gpu/drm/i915/i915_irq.c | 4 ++++
- 3 files changed, 19 insertions(+), 9 deletions(-)
-
---- a/drivers/gpu/drm/i915/i915_dma.c
-+++ b/drivers/gpu/drm/i915/i915_dma.c
-@@ -1297,19 +1297,21 @@ static int i915_load_modeset_init(struct
- if (ret)
- goto cleanup_vga_switcheroo;
-
-+ ret = drm_irq_install(dev);
-+ if (ret)
-+ goto cleanup_gem_stolen;
-+
-+ /* Important: The output setup functions called by modeset_init need
-+ * working irqs for e.g. gmbus and dp aux transfers. */
- intel_modeset_init(dev);
-
- ret = i915_gem_init(dev);
- if (ret)
-- goto cleanup_gem_stolen;
--
-- intel_modeset_gem_init(dev);
-+ goto cleanup_irq;
-
- INIT_WORK(&dev_priv->console_resume_work, intel_console_resume);
-
-- ret = drm_irq_install(dev);
-- if (ret)
-- goto cleanup_gem;
-+ intel_modeset_gem_init(dev);
-
- /* Always safe in the mode setting case. */
- /* FIXME: do pre/post-mode set stuff in core KMS code */
-@@ -1317,7 +1319,10 @@ static int i915_load_modeset_init(struct
-
- ret = intel_fbdev_init(dev);
- if (ret)
-- goto cleanup_irq;
-+ goto cleanup_gem;
-+
-+ /* Only enable hotplug handling once the fbdev is fully set up. */
-+ dev_priv->enable_hotplug_processing = true;
-
- drm_kms_helper_poll_init(dev);
-
-@@ -1326,13 +1331,13 @@ static int i915_load_modeset_init(struct
-
- return 0;
-
--cleanup_irq:
-- drm_irq_uninstall(dev);
- cleanup_gem:
- mutex_lock(&dev->struct_mutex);
- i915_gem_cleanup_ringbuffer(dev);
- mutex_unlock(&dev->struct_mutex);
- i915_gem_cleanup_aliasing_ppgtt(dev);
-+cleanup_irq:
-+ drm_irq_uninstall(dev);
- cleanup_gem_stolen:
- i915_gem_cleanup_stolen(dev);
- cleanup_vga_switcheroo:
---- a/drivers/gpu/drm/i915/i915_drv.h
-+++ b/drivers/gpu/drm/i915/i915_drv.h
-@@ -672,6 +672,7 @@ typedef struct drm_i915_private {
-
- u32 hotplug_supported_mask;
- struct work_struct hotplug_work;
-+ bool enable_hotplug_processing;
-
- int num_pipe;
- int num_pch_pll;
---- a/drivers/gpu/drm/i915/i915_irq.c
-+++ b/drivers/gpu/drm/i915/i915_irq.c
-@@ -287,6 +287,10 @@ static void i915_hotplug_work_func(struc
- struct drm_mode_config *mode_config = &dev->mode_config;
- struct intel_encoder *encoder;
-
-+ /* HPD irq before everything is fully set up. */
-+ if (!dev_priv->enable_hotplug_processing)
-+ return;
-+
- mutex_lock(&mode_config->mutex);
- DRM_DEBUG_KMS("running encoder hotplug functions\n");
-