drm/dp/mst: change MST detection scheme (v2) - reminder
Grodzovsky, Andrey
Andrey.Grodzovsky at amd.com
Sat Jun 11 13:50:17 UTC 2016
Hi.
Just a reminder with regard to this patch. Please comment if any changes are required.
Thanks.
-----Original Message-----
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Sent: Wednesday, May 18, 2016 7:10 PM
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Today's Topics:
1. Re: [PATCH] drm: Nuke ->vblank_disable_allowed (Alex Deucher)
2. Re: [PATCH 1/2] dma-buf/fence: add fence_collection fences
(Chris Wilson)
3. drm/dp/mst: change MST detection scheme (v2) (Andrey Grodzovsky)
----------------------------------------------------------------------
Message: 1
Date: Wed, 18 May 2016 17:54:50 -0400
From: Alex Deucher <alexdeucher at gmail.com>
To: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>,
Intel Graphics Development <intel-gfx at lists.freedesktop.org>, Liviu
Dudau <liviu.dudau at arm.com>, DRI Development
<dri-devel at lists.freedesktop.org>, Tomi Valkeinen
<tomi.valkeinen at ti.com>, Russell King <rmk+kernel at arm.linux.org.uk>,
Alex Deucher <alexander.deucher at amd.com>, Daniel Vetter
<daniel.vetter at intel.com>
Subject: Re: [PATCH] drm: Nuke ->vblank_disable_allowed
Message-ID:
<CADnq5_OHpNNN7yr6QB6xf_7eObVE7hdLFJY4cjTWpH0uTsC1Bw at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
On Wed, May 18, 2016 at 4:29 PM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> This was added in
>
> commit 0a3e67a4caac273a3bfc4ced3da364830b1ab241
> Author: Jesse Barnes <jbarnes at virtuousgeek.org>
> Date: Tue Sep 30 12:14:26 2008 -0700
>
> drm: Rework vblank-wait handling to allow interrupt reduction.
>
> to stay backwards-compatible with old UMS code that didn't even tell
> the kernel when it did a modeset, so that the kernel could
> save/restore vblank counters. At worst this means vblanks will be
> somewhat funky on a setup that very likely no one still runs.
>
> So let's just nuke it.
>
> Plan B would be to set it unconditionally in drm_vblank_init for kms
> drivers, instead of in each driver separately. So if this patch breaks
> anything please only restore the hunks in drmP.h and drm_irq.c, plus
> add a check for DRIVER_MODESET in drm_vblank_init.
>
> Stumbled over this in a discussion on irc with Chris.
>
> v2: Remove leftover debug gunk from psr hacking (Alex).
>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Cc: Liviu Dudau <liviu.dudau at arm.com>
> Cc: Russell King <rmk+kernel at arm.linux.org.uk>
> Cc: Thierry Reding <thierry.reding at gmail.com>
> Cc: Eric Anholt <eric at anholt.net>
> Cc: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
> Cc: Inki Dae <inki.dae at samsung.com>
> Cc: Tomi Valkeinen <tomi.valkeinen at ti.com>
> Cc: Mark Yao <mark.yao at rock-chips.com>
> Cc: Sascha Hauer <s.hauer at pengutronix.de>
> Cc: Philipp Zabel <p.zabel at pengutronix.de>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
Seems reasonable to me.
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 1 -
> drivers/gpu/drm/arm/hdlcd_drv.c | 1 -
> drivers/gpu/drm/armada/armada_drv.c | 1 -
> drivers/gpu/drm/drm_irq.c | 6 ------
> drivers/gpu/drm/exynos/exynos_drm_drv.c | 7 -------
> drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 1 -
> drivers/gpu/drm/gma500/psb_drv.c | 1 -
> drivers/gpu/drm/i915/i915_dma.c | 3 ---
> drivers/gpu/drm/imx/imx-drm-core.c | 7 -------
> drivers/gpu/drm/radeon/radeon_irq_kms.c | 1 -
> drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 7 -------
> drivers/gpu/drm/tegra/drm.c | 1 -
> drivers/gpu/drm/vc4/vc4_kms.c | 2 --
> include/drm/drmP.h | 8 --------
> 14 files changed, 47 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> index 9266c7b69808..835a3fa8d8df 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
> @@ -219,7 +219,6 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
> if (r) {
> return r;
> }
> - adev->ddev->vblank_disable_allowed = true;
>
> /* enable msi */
> adev->irq.msi_enabled = false; diff --git
> a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
> index 2112f0b105e3..4f909378d581 100644
> --- a/drivers/gpu/drm/arm/hdlcd_drv.c
> +++ b/drivers/gpu/drm/arm/hdlcd_drv.c
> @@ -379,7 +379,6 @@ static int hdlcd_drm_bind(struct device *dev)
> DRM_ERROR("failed to initialise vblank\n");
> goto err_vblank;
> }
> - drm->vblank_disable_allowed = true;
>
> drm_mode_config_reset(drm);
> drm_kms_helper_poll_init(drm); diff --git
> a/drivers/gpu/drm/armada/armada_drv.c
> b/drivers/gpu/drm/armada/armada_drv.c
> index 531fcb946346..cb21c0b6374a 100644
> --- a/drivers/gpu/drm/armada/armada_drv.c
> +++ b/drivers/gpu/drm/armada/armada_drv.c
> @@ -113,7 +113,6 @@ static int armada_drm_load(struct drm_device *dev, unsigned long flags)
> goto err_comp;
>
> dev->irq_enabled = true;
> - dev->vblank_disable_allowed = 1;
>
> ret = armada_fbdev_init(dev);
> if (ret)
> diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> index d1b5fc20b2f8..1a0ae89087e8 100644
> --- a/drivers/gpu/drm/drm_irq.c
> +++ b/drivers/gpu/drm/drm_irq.c
> @@ -348,9 +348,6 @@ static void vblank_disable_fn(unsigned long arg)
> unsigned int pipe = vblank->pipe;
> unsigned long irqflags;
>
> - if (!dev->vblank_disable_allowed)
> - return;
> -
> spin_lock_irqsave(&dev->vbl_lock, irqflags);
> if (atomic_read(&vblank->refcount) == 0 && vblank->enabled) {
> DRM_DEBUG("disabling vblank on crtc %u\n", pipe); @@
> -437,8 +434,6 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs)
> "get_vblank_timestamp == NULL\n");
> }
>
> - dev->vblank_disable_allowed = false;
> -
> return 0;
>
> err:
> @@ -1555,7 +1550,6 @@ static void
> drm_legacy_vblank_post_modeset(struct drm_device *dev,
>
> if (vblank->inmodeset) {
> spin_lock_irqsave(&dev->vbl_lock, irqflags);
> - dev->vblank_disable_allowed = true;
> drm_reset_vblank_timestamp(dev, pipe);
> spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> index 21c719e8e02b..2dd820e23b0c 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> @@ -212,13 +212,6 @@ static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
> */
> dev->irq_enabled = true;
>
> - /*
> - * with vblank_disable_allowed = true, vblank interrupt will be disabled
> - * by drm timer once a current process gives up ownership of
> - * vblank event.(after drm_vblank_put function is called)
> - */
> - dev->vblank_disable_allowed = true;
> -
> /* init kms poll for handling hpd */
> drm_kms_helper_poll_init(dev);
>
> diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> index 2e58dfd74ae1..33727d5d826a 100644
> --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
> @@ -80,7 +80,6 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags)
> dev_err(dev->dev, "failed to initialize vblank\n");
> goto done;
> }
> - dev->vblank_disable_allowed = true;
>
> ret = fsl_dcu_drm_irq_init(dev);
> if (ret < 0)
> diff --git a/drivers/gpu/drm/gma500/psb_drv.c
> b/drivers/gpu/drm/gma500/psb_drv.c
> index 4e1c6850520e..82b8ce418b27 100644
> --- a/drivers/gpu/drm/gma500/psb_drv.c
> +++ b/drivers/gpu/drm/gma500/psb_drv.c
> @@ -374,7 +374,6 @@ static int psb_driver_load(struct drm_device *dev,
> unsigned long flags)
>
> drm_irq_install(dev, dev->pdev->irq);
>
> - dev->vblank_disable_allowed = true;
> dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
> dev->driver->get_vblank_counter = psb_get_vblank_counter;
>
> diff --git a/drivers/gpu/drm/i915/i915_dma.c
> b/drivers/gpu/drm/i915/i915_dma.c index a8c79f6512a4..fd06bff216ff
> 100644
> --- a/drivers/gpu/drm/i915/i915_dma.c
> +++ b/drivers/gpu/drm/i915/i915_dma.c
> @@ -515,9 +515,6 @@ static int i915_load_modeset_init(struct
> drm_device *dev)
>
> intel_modeset_gem_init(dev);
>
> - /* Always safe in the mode setting case. */
> - /* FIXME: do pre/post-mode set stuff in core KMS code */
> - dev->vblank_disable_allowed = true;
> if (INTEL_INFO(dev)->num_pipes == 0)
> return 0;
>
> diff --git a/drivers/gpu/drm/imx/imx-drm-core.c
> b/drivers/gpu/drm/imx/imx-drm-core.c
> index 2453fb1c68a7..1080019e7b17 100644
> --- a/drivers/gpu/drm/imx/imx-drm-core.c
> +++ b/drivers/gpu/drm/imx/imx-drm-core.c
> @@ -252,13 +252,6 @@ static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
> if (ret)
> goto err_kms;
>
> - /*
> - * with vblank_disable_allowed = true, vblank interrupt will be
> - * disabled by drm timer once a current process gives up ownership
> - * of vblank event. (after drm_vblank_put function is called)
> - */
> - drm->vblank_disable_allowed = true;
> -
> platform_set_drvdata(drm->platformdev, drm);
>
> /* Now try and bind all our sub-components */ diff --git
> a/drivers/gpu/drm/radeon/radeon_irq_kms.c
> b/drivers/gpu/drm/radeon/radeon_irq_kms.c
> index 1e9304d1c88f..c084cadcbf21 100644
> --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
> +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
> @@ -291,7 +291,6 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
> if (r) {
> return r;
> }
> - rdev->ddev->vblank_disable_allowed = true;
>
> /* enable msi */
> rdev->msi_enabled = 0;
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> index ced1e5f93cda..09a4d429c0f0 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
> @@ -217,13 +217,6 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
> if (ret)
> goto err_kms_helper_poll_fini;
>
> - /*
> - * with vblank_disable_allowed = true, vblank interrupt will be disabled
> - * by drm timer once a current process gives up ownership of
> - * vblank event.(after drm_vblank_put function is called)
> - */
> - drm_dev->vblank_disable_allowed = true;
> -
> drm_mode_config_reset(drm_dev);
>
> ret = rockchip_drm_fbdev_init(drm_dev); diff --git
> a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index
> 679905544181..b59c3bf0df44 100644
> --- a/drivers/gpu/drm/tegra/drm.c
> +++ b/drivers/gpu/drm/tegra/drm.c
> @@ -180,7 +180,6 @@ static int tegra_drm_load(struct drm_device *drm,
> unsigned long flags)
>
> /* syncpoints are used for full 32-bit hardware VBLANK counters */
> drm->max_vblank_count = 0xffffffff;
> - drm->vblank_disable_allowed = true;
>
> err = drm_vblank_init(drm, drm->mode_config.num_crtc);
> if (err < 0)
> diff --git a/drivers/gpu/drm/vc4/vc4_kms.c
> b/drivers/gpu/drm/vc4/vc4_kms.c index d423ba10239a..cb37751bc99f
> 100644
> --- a/drivers/gpu/drm/vc4/vc4_kms.c
> +++ b/drivers/gpu/drm/vc4/vc4_kms.c
> @@ -207,8 +207,6 @@ int vc4_kms_load(struct drm_device *dev)
> dev->mode_config.preferred_depth = 24;
> dev->mode_config.async_page_flip = true;
>
> - dev->vblank_disable_allowed = true;
> -
> drm_mode_config_reset(dev);
>
> vc4->fbdev = drm_fbdev_cma_init(dev, 32, diff --git
> a/include/drm/drmP.h b/include/drm/drmP.h index
> f0d1450d4ea5..30dc7d8c403f 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -819,14 +819,6 @@ struct drm_device {
> int irq;
>
> /*
> - * At load time, disabling the vblank interrupt won't be allowed since
> - * old clients may not call the modeset ioctl and therefore misbehave.
> - * Once the modeset ioctl *has* been called though, we can safely
> - * disable them when unused.
> - */
> - bool vblank_disable_allowed;
> -
> - /*
> * If true, vblank interrupt will be disabled immediately when the
> * refcount drops to zero, as opposed to via the vblank disable
> * timer.
> --
> 2.8.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
------------------------------
Message: 2
Date: Wed, 18 May 2016 23:57:10 +0100
From: Chris Wilson <chris at chris-wilson.co.uk>
To: Gustavo Padovan <gustavo at padovan.org>
Cc: marcheu at google.com, Daniel Stone <daniels at collabora.com>,
seanpaul at google.com, Daniel Vetter <daniel.vetter at ffwll.ch>,
linux-kernel at vger.kernel.org, dri-devel at lists.freedesktop.org,
laurent.pinchart at ideasonboard.com, Alex Deucher
<alexander.deucher at amd.com>, Gustavo Padovan
<gustavo.padovan at collabora.co.uk>, Christian König
<christian.koenig at amd.com>, John Harrison <John.C.Harrison at Intel.com>,
m.chehab at samsung.com
Subject: Re: [PATCH 1/2] dma-buf/fence: add fence_collection fences
Message-ID: <20160518225710.GA32627 at nuc-i3427.alporthouse.com>
Content-Type: text/plain; charset=us-ascii
On Wed, May 18, 2016 at 05:59:52PM -0300, Gustavo Padovan wrote:
> +static void collection_check_cb_func(struct fence *fence, struct
> +fence_cb *cb) {
> + struct fence_collection_cb *f_cb;
> + struct fence_collection *collection;
> +
> + f_cb = container_of(cb, struct fence_collection_cb, cb);
> + collection = f_cb->collection;
> +
> + if (atomic_dec_and_test(&collection->num_pending_fences))
> + fence_signal(&collection->base);
> +}
> +
> +static bool fence_collection_enable_signaling(struct fence *fence) {
> + struct fence_collection *collection = to_fence_collection(fence);
> + int i;
> +
> + for (i = 0 ; i < collection->num_fences ; i++) {
> + if (fence_add_callback(collection->fences[i].fence,
> + &collection->fences[i].cb,
> + collection_check_cb_func)) {
> + atomic_dec(&collection->num_pending_fences);
> + }
> + }
We don't always have a convenient means to preallocate an array of fences to use. Keeping a list of fences in addition to the array would be easier to user in many circumstances.
Just means we need a
struct fence_collection_entry {
struct fence *fence;
struct list_head link;
};
int fence_collection_add(struct fence *_collection,
struct fence *fence)
{
struct fence_collection *collection =
to_fence_collection(_collection);
struct fence_collection_entry *entry;
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
entry->fence = fence_get(fence);
list_add_tail(&entry->link, &collection->fence_list);
atomic_inc(&collection->num_pending_fences);
return 0;
}
and a couple of list iterations as well as walking the arrays.
(This fence_collection_add() needs to be documented to only be valid from the constructing thread before the fence is sealed for export/use.) -Chris
--
Chris Wilson, Intel Open Source Technology Centre
HI.
------------------------------
Message: 3
Date: Wed, 18 May 2016 18:37:10 -0400
From: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>
To: <dri-devel at lists.freedesktop.org>
Cc: Mykola Lysenko <Mykola.Lysenko at amd.com>
Subject: drm/dp/mst: change MST detection scheme (v2)
Message-ID:
<1463611030-21448-1-git-send-email-Andrey.Grodzovsky at amd.com>
Content-Type: text/plain; charset="UTF-8"
From: Mykola Lysenko <Mykola.Lysenko at amd.com>
1. Get edid for all connected MST displays, not only on logical ports,
in the same thread as MST topology detection is done:
There are displays that have branches inside w/o logical ports.
So in case another SST display connected downstream system can
end-up in situation when 3 DOWN requests sent: two for
‘remote i2c read’ and one for ‘enum path resources’, making slots full.
2. Call notification callback in one place in the end of topology discovery/update:
This is done to reduce number of events sent to userspace in case complex
topology discovery is going, adding multiple number of connectors;
3. Remove notification callback call from short pulse interrupt processing function:
This is done in order not to block interrupt processing function, in case any
MST request will be made from it. Notification will be send from topology
discovery/update work item.
v2: This change also includes tile property set fix which caused regression
in i915 driver.
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Mykola Lysenko <Mykola.Lysenko at amd.com>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 36 +++++++++++++++++------------------
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 27fbd79..9971c46 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1159,13 +1159,9 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
drm_dp_put_port(port);
goto out;
}
- if (port->port_num >= DP_MST_LOGICAL_PORT_0) {
- port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
- drm_mode_connector_set_tile_property(port->connector);
- }
+
(*mstb->mgr->cbs->register_connector)(port->connector);
}
-
out:
/* put reference to this port */
drm_dp_put_port(port);
@@ -1190,8 +1186,8 @@ static void drm_dp_update_port(struct drm_dp_mst_branch *mstb,
port->ddps = conn_stat->displayport_device_plug_status;
if (old_ddps != port->ddps) {
+ dowork = true;
if (port->ddps) {
- dowork = true;
} else {
port->available_pbn = 0;
}
@@ -1296,8 +1292,13 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m
if (port->input)
continue;
- if (!port->ddps)
+ if (!port->ddps) {
+ if (port->cached_edid) {
+ kfree(port->cached_edid);
+ port->cached_edid = NULL;
+ }
continue;
+ }
if (!port->available_pbn)
drm_dp_send_enum_path_resources(mgr, mstb, port);
@@ -1308,6 +1309,13 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m
drm_dp_check_and_send_link_address(mgr, mstb_child);
drm_dp_put_mst_branch_device(mstb_child);
}
+ } else if (port->pdt == DP_PEER_DEVICE_SST_SINK ||
+ port->pdt == DP_PEER_DEVICE_DP_LEGACY_CONV) {
+ if (!port->cached_edid) {
+ port->cached_edid =
+ drm_get_edid(port->connector, &port->aux.ddc);
+ drm_mode_connector_set_tile_property(port->connector);
+ }
}
}
}
@@ -1327,6 +1335,8 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work)
drm_dp_check_and_send_link_address(mgr, mstb);
drm_dp_put_mst_branch_device(mstb);
}
+
+ (*mgr->cbs->hotplug)(mgr);
}
static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr,
@@ -1586,7 +1596,6 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
for (i = 0; i < txmsg->reply.u.link_addr.nports; i++) {
drm_dp_add_port(mstb, mgr->dev, &txmsg->reply.u.link_addr.ports[i]);
}
- (*mgr->cbs->hotplug)(mgr);
}
} else {
mstb->link_address_sent = false;
@@ -2283,8 +2292,6 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
drm_dp_update_port(mstb, &msg.u.conn_stat);
DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type);
- (*mgr->cbs->hotplug)(mgr);
-
} else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) {
drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false);
if (!mstb)
@@ -2371,10 +2378,6 @@ enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector
case DP_PEER_DEVICE_SST_SINK:
status = connector_status_connected;
- /* for logical ports - cache the EDID */
- if (port->port_num >= 8 && !port->cached_edid) {
- port->cached_edid = drm_get_edid(connector, &port->aux.ddc);
- }
break;
case DP_PEER_DEVICE_DP_LEGACY_CONV:
if (port->ldps)
@@ -2429,10 +2432,7 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_
if (port->cached_edid)
edid = drm_edid_duplicate(port->cached_edid);
- else {
- edid = drm_get_edid(connector, &port->aux.ddc);
- drm_mode_connector_set_tile_property(connector);
- }
+
port->has_audio = drm_detect_monitor_audio(edid);
drm_dp_put_port(port);
return edid;
--
1.9.1
------------------------------
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