dri-devel September 2019

dri-devel@lists.freedesktop.org

315 participants
2278 discussions

[RFC PATCH 0/7] Emulated coherent graphics memory take 2
by Thomas Hellström (VMware) 13 Sep '19

13 Sep '19

From: Thomas Hellström <thellstrom(a)vmware.com> Graphics APIs like OpenGL 4.4 and Vulkan require the graphics driver to provide coherent graphics memory, meaning that the GPU sees any content written to the coherent memory on the next GPU operation that touches that memory, and the CPU sees any content written by the GPU to that memory immediately after any fence object trailing the GPU operation has signaled. Paravirtual drivers that otherwise require explicit synchronization needs to do this by hooking up dirty tracking to pagefault handlers and buffer object validation. The mm patch page walk interface has been reworked to be similar to the reworked page-walk code (mm/pagewalk.c). There have been two other solutions to consider: 1) Using the page-walk code. That is currently not possible since it requires the mmap-sem to be held for the struct vm_area_struct vm_flags and for huge page splitting. The pagewalk code in this patchset can't hold the mmap sems since it will lead to locking inversion. Instead it uses an operation mode similar to unmap_mapping_range where the i_mmap_lock is held. 2) Using apply_to_page_range(). The primary use of this code is to fill page tables. The operation modes are IMO sufficiently different to motivate re-implementing the page-walk. For the TTM changes they are hopefully in line with the long-term strategy of making helpers out of what's left of TTM. The code has been tested and exercised by a tailored version of mesa where we disable all explicit synchronization and assume graphics memory is coherent. The performance loss varies of course; a typical number is around 5%. I would like to merge this code through the DRM tree, so an ack to do that from an mm maintainer would be greatly appreciated. Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: Will Deacon <will.deacon(a)arm.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Rik van Riel <riel(a)surriel.com> Cc: Minchan Kim <minchan(a)kernel.org> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Huang Ying <ying.huang(a)intel.com> Cc: Souptick Joarder <jrdr.linux(a)gmail.com> Cc: "Jérôme Glisse" <jglisse(a)redhat.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: Christoph Hellwig <hch(a)infradead.org>

3 13

[PATCH 4.19 092/190] drm/nouveau: Dont WARN_ON VCPI allocation failures
by Greg Kroah-Hartman 13 Sep '19

13 Sep '19

[ Upstream commit b513a18cf1d705bd04efd91c417e79e4938be093 ] This is much louder then we want. VCPI allocation failures are quite normal, since they will happen if any part of the modesetting process is interrupted by removing the DP MST topology in question. So just print a debugging message on VCPI failures instead. Signed-off-by: Lyude Paul <lyude(a)redhat.com> Fixes: f479c0ba4a17 ("drm/nouveau/kms/nv50: initial support for DP 1.2 multi-stream") Cc: Ben Skeggs <bskeggs(a)redhat.com> Cc: dri-devel(a)lists.freedesktop.org Cc: nouveau(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v4.10+ Signed-off-by: Ben Skeggs <bskeggs(a)redhat.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index f889d41a281fa..5e01bfb69d7a3 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -759,7 +759,8 @@ nv50_msto_enable(struct drm_encoder *encoder) slots = drm_dp_find_vcpi_slots(&mstm->mgr, mstc->pbn); r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, mstc->pbn, slots); - WARN_ON(!r); + if (!r) + DRM_DEBUG_KMS("Failed to allocate VCPI\n"); if (!mstm->links++) nv50_outp_acquire(mstm->outp); -- 2.20.1

3 9

Running SPICE on ppc64le
by Niccolò Belli 13 Sep '19

13 Sep '19

Hi, Is there any reason why Spice is not available on ppc64le? I've read there are still some issues with big endian, but what's wrong with little endian? I would really love to be able to use QXL and especially USB redirection on my Raptor Blackbird (Power 9). Bests, Niccolo'

1 0

[PATCH 4.19 125/190] PCI: Reset Lenovo ThinkPad P50 nvgpu at boot if necessary
by Greg Kroah-Hartman 13 Sep '19

13 Sep '19

[ Upstream commit e0547c81bfcfad01cbbfa93a5e66bb98ab932f80 ] On ThinkPad P50 SKUs with an Nvidia Quadro M1000M instead of the M2000M variant, the BIOS does not always reset the secondary Nvidia GPU during reboot if the laptop is configured in Hybrid Graphics mode. The reason is unknown, but the following steps and possibly a good bit of patience will reproduce the issue: 1. Boot up the laptop normally in Hybrid Graphics mode 2. Make sure nouveau is loaded and that the GPU is awake 3. Allow the Nvidia GPU to runtime suspend itself after being idle 4. Reboot the machine, the more sudden the better (e.g. sysrq-b may help) 5. If nouveau loads up properly, reboot the machine again and go back to step 2 until you reproduce the issue This results in some very strange behavior: the GPU will be left in exactly the same state it was in when the previously booted kernel started the reboot. This has all sorts of bad side effects: for starters, this completely breaks nouveau starting with a mysterious EVO channel failure that happens well before we've actually used the EVO channel for anything: nouveau 0000:01:00.0: disp: chid 0 mthd 0000 data 00000400 00001000 00000002 This causes a timeout trying to bring up the GR ctx: nouveau 0000:01:00.0: timeout WARNING: CPU: 0 PID: 12 at drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c:1547 gf100_grctx_generate+0x7b2/0x850 [nouveau] Hardware name: LENOVO 20EQS64N0B/20EQS64N0B, BIOS N1EET82W (1.55 ) 12/18/2018 Workqueue: events_long drm_dp_mst_link_probe_work [drm_kms_helper] ... nouveau 0000:01:00.0: gr: wait for idle timeout (en: 1, ctxsw: 0, busy: 1) nouveau 0000:01:00.0: gr: wait for idle timeout (en: 1, ctxsw: 0, busy: 1) nouveau 0000:01:00.0: fifo: fault 01 [WRITE] at 0000000000008000 engine 00 [GR] client 15 [HUB/SCC_NB] reason c4 [] on channel -1 [0000000000 unknown] The GPU never manages to recover. Booting without loading nouveau causes issues as well, since the GPU starts sending spurious interrupts that cause other device's IRQs to get disabled by the kernel: irq 16: nobody cared (try booting with the "irqpoll" option) ... handlers: [<000000007faa9e99>] i801_isr [i2c_i801] Disabling IRQ #16 ... serio: RMI4 PS/2 pass-through port at rmi4-00.fn03 i801_smbus 0000:00:1f.4: Timeout waiting for interrupt! i801_smbus 0000:00:1f.4: Transaction timeout rmi4_f03 rmi4-00.fn03: rmi_f03_pt_write: Failed to write to F03 TX register (-110). i801_smbus 0000:00:1f.4: Timeout waiting for interrupt! i801_smbus 0000:00:1f.4: Transaction timeout rmi4_physical rmi4-00: rmi_driver_set_irq_bits: Failed to change enabled interrupts! This causes the touchpad and sometimes other things to get disabled. Since this happens without nouveau, we can't fix this problem from nouveau itself. Add a PCI quirk for the specific P50 variant of this GPU. Make sure the GPU is advertising NoReset- so we don't reset the GPU when the machine is in Dedicated graphics mode (where the GPU being initialized by the BIOS is normal and expected). Map the GPU MMIO space and read the magic 0x2240c register, which will have bit 1 set if the device was POSTed during a previous boot. Once we've confirmed all of this, reset the GPU and re-disable it - bringing it back to a healthy state. Link: https://bugzilla.kernel.org/show_bug.cgi?id=203003 Link: https://lore.kernel.org/lkml/20190212220230.1568-1-lyude@redhat.com Signed-off-by: Lyude Paul <lyude(a)redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Cc: nouveau(a)lists.freedesktop.org Cc: dri-devel(a)lists.freedesktop.org Cc: Karol Herbst <kherbst(a)redhat.com> Cc: Ben Skeggs <skeggsb(a)gmail.com> Cc: stable(a)vger.kernel.org Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- drivers/pci/quirks.c | 58 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 6cda8b7ecc821..311f8a33e62ff 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5116,3 +5116,61 @@ SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */ SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */ SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */ SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */ + +/* + * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does + * not always reset the secondary Nvidia GPU between reboots if the system + * is configured to use Hybrid Graphics mode. This results in the GPU + * being left in whatever state it was in during the *previous* boot, which + * causes spurious interrupts from the GPU, which in turn causes us to + * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly, + * this also completely breaks nouveau. + * + * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a + * clean state and fixes all these issues. + * + * When the machine is configured in Dedicated display mode, the issue + * doesn't occur. Fortunately the GPU advertises NoReset+ when in this + * mode, so we can detect that and avoid resetting it. + */ +static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev) +{ + void __iomem *map; + int ret; + + if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO || + pdev->subsystem_device != 0x222e || + !pdev->reset_fn) + return; + + if (pci_enable_device_mem(pdev)) + return; + + /* + * Based on nvkm_device_ctor() in + * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c + */ + map = pci_iomap(pdev, 0, 0x23000); + if (!map) { + pci_err(pdev, "Can't map MMIO space\n"); + goto out_disable; + } + + /* + * Make sure the GPU looks like it's been POSTed before resetting + * it. + */ + if (ioread32(map + 0x2240c) & 0x2) { + pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n"); + ret = pci_reset_function(pdev); + if (ret < 0) + pci_err(pdev, "Failed to reset GPU: %d\n", ret); + } + + iounmap(map); +out_disable: + pci_disable_device(pdev); +} +DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1, + PCI_CLASS_DISPLAY_VGA, 8, + quirk_reset_lenovo_thinkpad_p50_nvgpu); -- 2.20.1

1 0

[PATCH 1/2] drm/connector: Share with non-atomic drivers the function to get the single encoder
by José Roberto de Souza 13 Sep '19

13 Sep '19

This 3 non-atomic drivers all have the same function getting the only encoder available in the connector, also atomic drivers have this fallback. So moving it a common place and sharing between atomic and non-atomic drivers. While at it I also removed the mention of drm_atomic_helper_best_encoder() that was renamed in commit 297e30b5d9b6 ("drm/atomic-helper: Unexport drm_atomic_helper_best_encoder"). v3: moving drm_connector_get_single_encoder to drm_kms_helper module Suggested-by: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Cc: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> Cc: dri-devel(a)lists.freedesktop.org Cc: intel-gfx(a)lists.freedesktop.org Signed-off-by: José Roberto de Souza <jose.souza(a)intel.com> --- drivers/gpu/drm/ast/ast_mode.c | 12 ------------ drivers/gpu/drm/drm_atomic_helper.c | 15 ++------------- drivers/gpu/drm/drm_crtc_helper.c | 17 ++++++++++++++++- drivers/gpu/drm/drm_crtc_helper_internal.h | 3 +++ drivers/gpu/drm/mgag200/mgag200_mode.c | 11 ----------- drivers/gpu/drm/udl/udl_connector.c | 8 -------- include/drm/drm_modeset_helper_vtables.h | 6 +++--- 7 files changed, 24 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index d349c721501c..eef95e1af06b 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -687,17 +687,6 @@ static void ast_encoder_destroy(struct drm_encoder *encoder) kfree(encoder); } - -static struct drm_encoder *ast_best_single_encoder(struct drm_connector *connector) -{ - int enc_id = connector->encoder_ids[0]; - /* pick the encoder ids */ - if (enc_id) - return drm_encoder_find(connector->dev, NULL, enc_id); - return NULL; -} - - static const struct drm_encoder_funcs ast_enc_funcs = { .destroy = ast_encoder_destroy, }; @@ -847,7 +836,6 @@ static void ast_connector_destroy(struct drm_connector *connector) static const struct drm_connector_helper_funcs ast_connector_helper_funcs = { .mode_valid = ast_mode_valid, .get_modes = ast_get_modes, - .best_encoder = ast_best_single_encoder, }; static const struct drm_connector_funcs ast_connector_funcs = { diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 4706439fb490..9d7e4da6c292 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -97,17 +97,6 @@ drm_atomic_helper_plane_changed(struct drm_atomic_state *state, } } -/* - * For connectors that support multiple encoders, either the - * .atomic_best_encoder() or .best_encoder() operation must be implemented. - */ -static struct drm_encoder * -pick_single_encoder_for_connector(struct drm_connector *connector) -{ - WARN_ON(connector->encoder_ids[1]); - return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); -} - static int handle_conflicting_encoders(struct drm_atomic_state *state, bool disable_conflicting_encoders) { @@ -135,7 +124,7 @@ static int handle_conflicting_encoders(struct drm_atomic_state *state, else if (funcs->best_encoder) new_encoder = funcs->best_encoder(connector); else - new_encoder = pick_single_encoder_for_connector(connector); + new_encoder = drm_connector_get_single_encoder(connector); if (new_encoder) { if (encoder_mask & drm_encoder_mask(new_encoder)) { @@ -359,7 +348,7 @@ update_connector_routing(struct drm_atomic_state *state, else if (funcs->best_encoder) new_encoder = funcs->best_encoder(connector); else - new_encoder = pick_single_encoder_for_connector(connector); + new_encoder = drm_connector_get_single_encoder(connector); if (!new_encoder) { DRM_DEBUG_ATOMIC("No suitable encoder found for [CONNECTOR:%d:%s]\n", diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index a51824a7e7c1..4a7447a53cea 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -460,6 +460,17 @@ drm_crtc_helper_disable(struct drm_crtc *crtc) __drm_helper_disable_unused_functions(dev); } +/* + * For connectors that support multiple encoders, either the + * .atomic_best_encoder() or .best_encoder() operation must be implemented. + */ +struct drm_encoder * +drm_connector_get_single_encoder(struct drm_connector *connector) +{ + WARN_ON(connector->encoder_ids[1]); + return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]); +} + /** * drm_crtc_helper_set_config - set a new config from userspace * @set: mode set configuration @@ -625,7 +636,11 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set, new_encoder = connector->encoder; for (ro = 0; ro < set->num_connectors; ro++) { if (set->connectors[ro] == connector) { - new_encoder = connector_funcs->best_encoder(connector); + if (connector_funcs->best_encoder) + new_encoder = connector_funcs->best_encoder(connector); + else + new_encoder = drm_connector_get_single_encoder(connector); + /* if we can't get an encoder for a connector we are setting now - then fail */ if (new_encoder == NULL) diff --git a/drivers/gpu/drm/drm_crtc_helper_internal.h b/drivers/gpu/drm/drm_crtc_helper_internal.h index b5ac1581e623..f0a66ef47e5a 100644 --- a/drivers/gpu/drm/drm_crtc_helper_internal.h +++ b/drivers/gpu/drm/drm_crtc_helper_internal.h @@ -75,3 +75,6 @@ enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder, const struct drm_display_mode *mode); enum drm_mode_status drm_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode); + +struct drm_encoder * +drm_connector_get_single_encoder(struct drm_connector *connector); diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 5e778b5f1a10..68226556044b 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1638,16 +1638,6 @@ static enum drm_mode_status mga_vga_mode_valid(struct drm_connector *connector, return MODE_OK; } -static struct drm_encoder *mga_connector_best_encoder(struct drm_connector - *connector) -{ - int enc_id = connector->encoder_ids[0]; - /* pick the encoder ids */ - if (enc_id) - return drm_encoder_find(connector->dev, NULL, enc_id); - return NULL; -} - static void mga_connector_destroy(struct drm_connector *connector) { struct mga_connector *mga_connector = to_mga_connector(connector); @@ -1659,7 +1649,6 @@ static void mga_connector_destroy(struct drm_connector *connector) static const struct drm_connector_helper_funcs mga_vga_connector_helper_funcs = { .get_modes = mga_vga_get_modes, .mode_valid = mga_vga_mode_valid, - .best_encoder = mga_connector_best_encoder, }; static const struct drm_connector_funcs mga_vga_connector_funcs = { diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c index ddb61a60c610..b4ae3e89a7b4 100644 --- a/drivers/gpu/drm/udl/udl_connector.c +++ b/drivers/gpu/drm/udl/udl_connector.c @@ -90,13 +90,6 @@ udl_detect(struct drm_connector *connector, bool force) return connector_status_connected; } -static struct drm_encoder* -udl_best_single_encoder(struct drm_connector *connector) -{ - int enc_id = connector->encoder_ids[0]; - return drm_encoder_find(connector->dev, NULL, enc_id); -} - static int udl_connector_set_property(struct drm_connector *connector, struct drm_property *property, uint64_t val) @@ -120,7 +113,6 @@ static void udl_connector_destroy(struct drm_connector *connector) static const struct drm_connector_helper_funcs udl_connector_helper_funcs = { .get_modes = udl_get_modes, .mode_valid = udl_mode_valid, - .best_encoder = udl_best_single_encoder, }; static const struct drm_connector_funcs udl_connector_funcs = { diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h index 6b18c8adfe9d..b55412c6ce3a 100644 --- a/include/drm/drm_modeset_helper_vtables.h +++ b/include/drm/drm_modeset_helper_vtables.h @@ -955,8 +955,8 @@ struct drm_connector_helper_funcs { * @atomic_best_encoder. * * You can leave this function to NULL if the connector is only - * attached to a single encoder and you are using the atomic helpers. - * In this case, the core will call drm_atomic_helper_best_encoder() + * attached to a single encoder. + * In this case, the core will call drm_connector_get_single_encoder() * for you. * * RETURNS: @@ -977,7 +977,7 @@ struct drm_connector_helper_funcs { * * This function is used by drm_atomic_helper_check_modeset(). * If it is not implemented, the core will fallback to @best_encoder - * (or drm_atomic_helper_best_encoder() if @best_encoder is NULL). + * (or drm_connector_get_single_encoder() if @best_encoder is NULL). * * NOTE: * -- 2.23.0

3 3

[PATCH] drm/bridge: Fix references to drm_bridge_funcs in documentation
by Laurent Pinchart 13 Sep '19

13 Sep '19

The documentation for most of the bridge atomic operations incorrectly reference the non-atomic version when stating the operations are optional. Fix them, and make sure that all references to bridge operations are correctly marked with @. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas(a)ideasonboard.com> --- include/drm/drm_bridge.h | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 7616f6562fe4..6d76c67fb819 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -42,7 +42,7 @@ struct drm_bridge_funcs { * This callback is invoked whenever our bridge is being attached to a * &drm_encoder. * - * The attach callback is optional. + * The @attach callback is optional. * * RETURNS: * @@ -56,7 +56,7 @@ struct drm_bridge_funcs { * This callback is invoked whenever our bridge is being detached from a * &drm_encoder. * - * The detach callback is optional. + * The @detach callback is optional. */ void (*detach)(struct drm_bridge *bridge); @@ -76,7 +76,7 @@ struct drm_bridge_funcs { * atomic helpers to validate modes supplied by userspace in * drm_atomic_helper_check_modeset(). * - * This function is optional. + * The @mode_valid callback is optional. * * NOTE: * @@ -108,7 +108,7 @@ struct drm_bridge_funcs { * this function passes all other callbacks must succeed for this * configuration. * - * The mode_fixup callback is optional. + * The @mode_fixup callback is optional. * * NOTE: * @@ -146,7 +146,7 @@ struct drm_bridge_funcs { * The bridge can assume that the display pipe (i.e. clocks and timing * signals) feeding it is still running when this callback is called. * - * The disable callback is optional. + * The @disable callback is optional. */ void (*disable)(struct drm_bridge *bridge); @@ -165,7 +165,7 @@ struct drm_bridge_funcs { * singals) feeding it is no longer running when this callback is * called. * - * The post_disable callback is optional. + * The @post_disable callback is optional. */ void (*post_disable)(struct drm_bridge *bridge); @@ -214,7 +214,7 @@ struct drm_bridge_funcs { * not enable the display link feeding the next bridge in the chain (if * there is one) when this callback is called. * - * The pre_enable callback is optional. + * The @pre_enable callback is optional. */ void (*pre_enable)(struct drm_bridge *bridge); @@ -234,7 +234,7 @@ struct drm_bridge_funcs { * callback must enable the display link feeding the next bridge in the * chain if there is one. * - * The enable callback is optional. + * The @enable callback is optional. */ void (*enable)(struct drm_bridge *bridge); @@ -283,7 +283,7 @@ struct drm_bridge_funcs { * would be prudent to also provide an implementation of @enable if * you are expecting driver calls into &drm_bridge_enable. * - * The enable callback is optional. + * The @atomic_enable callback is optional. */ void (*atomic_enable)(struct drm_bridge *bridge, struct drm_atomic_state *state); @@ -305,7 +305,7 @@ struct drm_bridge_funcs { * would be prudent to also provide an implementation of @disable if * you are expecting driver calls into &drm_bridge_disable. * - * The disable callback is optional. + * The @atomic_disable callback is optional. */ void (*atomic_disable)(struct drm_bridge *bridge, struct drm_atomic_state *state); @@ -330,7 +330,7 @@ struct drm_bridge_funcs { * @post_disable if you are expecting driver calls into * &drm_bridge_post_disable. * - * The post_disable callback is optional. + * The @atomic_post_disable callback is optional. */ void (*atomic_post_disable)(struct drm_bridge *bridge, struct drm_atomic_state *state); -- Regards, Laurent Pinchart

2 1

[PATCH] drm/ttm: Restore ttm prefaulting
by Thomas Hellström (VMware) 13 Sep '19

13 Sep '19

From: Thomas Hellstrom <thellstrom(a)vmware.com> Commit 4daa4fba3a38 ("gpu: drm: ttm: Adding new return type vm_fault_t") broke TTM prefaulting. Since vmf_insert_mixed() typically always returns VM_FAULT_NOPAGE, prefaulting stops after the second PTE. Restore (almost) the original behaviour. Unfortunately we can no longer with the new vm_fault_t return type determine whether a prefaulting PTE insertion hit an already populated PTE, and terminate the insertion loop. Instead we continue with the pre-determined number of prefaults. Fixes: 4daa4fba3a38 ("gpu: drm: ttm: Adding new return type vm_fault_t") Cc: Souptick Joarder <jrdr.linux(a)gmail.com> Cc: Christian König <christian.koenig(a)amd.com> Signed-off-by: Thomas Hellstrom <thellstrom(a)vmware.com> --- drivers/gpu/drm/ttm/ttm_bo_vm.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 5a580adeb9d1..aa18e8a53727 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -290,15 +290,13 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, else ret = vmf_insert_pfn(&cvma, address, pfn); - /* - * Somebody beat us to this PTE or prefaulting to - * an already populated PTE, or prefaulting error. - */ - - if (unlikely((ret == VM_FAULT_NOPAGE && i > 0))) - break; - else if (unlikely(ret & VM_FAULT_ERROR)) - goto out_io_unlock; + /* Never error on prefaulted PTEs */ + if (unlikely((ret & VM_FAULT_ERROR))) { + if (i == 0) + goto out_io_unlock; + else + break; + } address += PAGE_SIZE; if (unlikely(++page_offset >= page_last)) -- 2.20.1

3 4

[PATCH v2 1/2] drm/etnaviv: update hardware headers from rnndb
by Christian Gmeiner 13 Sep '19

13 Sep '19

Update the state HI header from rnndb commit a04283591a8a (rnndb: update MMU exception causes). Changes in V2: - Only update state_hi.xml as suggested by Lucas Stach. Signed-off-by: Christian Gmeiner <christian.gmeiner(a)gmail.com> --- drivers/gpu/drm/etnaviv/state_hi.xml.h | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/etnaviv/state_hi.xml.h b/drivers/gpu/drm/etnaviv/state_hi.xml.h index 41d8da2b6f4f..0f93dbbbaaeb 100644 --- a/drivers/gpu/drm/etnaviv/state_hi.xml.h +++ b/drivers/gpu/drm/etnaviv/state_hi.xml.h @@ -8,17 +8,17 @@ This file was generated by the rules-ng-ng headergen tool in this git repository git clone git://0x04.net/rules-ng-ng The rules-ng-ng source files this header was generated from are: -- state.xml ( 26087 bytes, from 2017-12-18 16:51:59) -- common.xml ( 35468 bytes, from 2018-01-22 13:48:54) -- common_3d.xml ( 14615 bytes, from 2017-12-18 16:51:59) -- state_hi.xml ( 30232 bytes, from 2018-02-15 15:48:01) -- copyright.xml ( 1597 bytes, from 2016-12-08 16:37:56) -- state_2d.xml ( 51552 bytes, from 2016-12-08 16:37:56) -- state_3d.xml ( 79992 bytes, from 2017-12-18 16:51:59) -- state_blt.xml ( 13405 bytes, from 2017-12-18 16:51:59) -- state_vg.xml ( 5975 bytes, from 2016-12-08 16:37:56) - -Copyright (C) 2012-2018 by the following authors: +- state.xml ( 26666 bytes, from 2019-08-13 11:26:49) +- common.xml ( 35468 bytes, from 2018-02-10 13:09:26) +- common_3d.xml ( 14322 bytes, from 2019-08-20 20:31:50) +- state_hi.xml ( 30396 bytes, from 2019-08-20 20:34:03) +- copyright.xml ( 1597 bytes, from 2018-02-10 13:09:26) +- state_2d.xml ( 51552 bytes, from 2018-02-10 13:09:26) +- state_3d.xml ( 83505 bytes, from 2019-09-06 09:32:54) +- state_blt.xml ( 14252 bytes, from 2019-08-13 20:00:42) +- state_vg.xml ( 5975 bytes, from 2018-02-10 13:09:26) + +Copyright (C) 2012-2019 by the following authors: - Wladimir J. van der Laan <laanwj(a)gmail.com> - Christian Gmeiner <christian.gmeiner(a)gmail.com> - Lucas Stach <l.stach(a)pengutronix.de> @@ -48,6 +48,9 @@ DEALINGS IN THE SOFTWARE. #define MMU_EXCEPTION_SLAVE_NOT_PRESENT 0x00000001 #define MMU_EXCEPTION_PAGE_NOT_PRESENT 0x00000002 #define MMU_EXCEPTION_WRITE_VIOLATION 0x00000003 +#define MMU_EXCEPTION_OUT_OF_BOUND 0x00000004 +#define MMU_EXCEPTION_READ_SECURITY_VIOLATION 0x00000005 +#define MMU_EXCEPTION_WRITE_SECURITY_VIOLATION 0x00000006 #define VIVS_HI 0x00000000 #define VIVS_HI_CLOCK_CONTROL 0x00000000 -- 2.21.0

2 2

[PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting
by Cheng-Yi Chiang 13 Sep '19

13 Sep '19

From: Yakir Yang <ykk(a)rock-chips.com> When transmitting IEC60985 linear PCM audio, we configure the Aduio Sample Channel Status information in the IEC60958 frame. The status bit is already available in iec.status of hdmi_codec_params. This fix the issue that audio does not come out on some monitors (e.g. LG 22CV241) Note that these registers are only for interfaces: I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA (AHBAUDDMA). For S/PDIF interface this information comes from the stream. Currently this function dw_hdmi_set_channel_status is only called from dw-hdmi-i2s-audio in I2S setup. Signed-off-by: Yakir Yang <ykk(a)rock-chips.com> Signed-off-by: Cheng-Yi Chiang <cychiang(a)chromium.org> --- Change from v2 to v3: 1. Reuse what is already set in iec.status in hw_param. 2. Remove all useless definition of registers and values. 3. Note that the original sampling frequency is not written to the channel status as we reuse create_iec958_consumer in pcm_iec958.c. Without that it can still play audio fine. .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 + drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++++++++++++++++++ drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++ include/drm/bridge/dw_hdmi.h | 1 + 4 files changed, 24 insertions(+) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index 34d8e837555f..20f4f92dd866 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev, void *data, } dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate); + dw_hdmi_set_channel_status(hdmi, hparms->iec.status); dw_hdmi_set_channel_count(hdmi, hparms->channels); dw_hdmi_set_channel_allocation(hdmi, hparms->cea.channel_allocation); diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index bd65d0479683..aa7efd4da1c8 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) return n; } +/* + * When transmitting IEC60958 linear PCM audio, these registers allow to + * configure the channel status information of all the channel status + * bits in the IEC60958 frame. For the moment this configuration is only + * used when the I2S audio interface, General Purpose Audio (GPA), + * or AHB audio DMA (AHBAUDDMA) interface is active + * (for S/PDIF interface this information comes from the stream). + */ +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, + u8 *channel_status) +{ + /* + * Set channel status register for frequency and word length. + * Use default values for other registers. + */ + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7); + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status); + static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, unsigned long pixel_clk, unsigned int sample_rate) { diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index 6988f12d89d9..fcff5059db24 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h @@ -158,6 +158,8 @@ #define HDMI_FC_SPDDEVICEINF 0x1062 #define HDMI_FC_AUDSCONF 0x1063 #define HDMI_FC_AUDSSTAT 0x1064 +#define HDMI_FC_AUDSCHNLS7 0x106e +#define HDMI_FC_AUDSCHNLS8 0x106f #define HDMI_FC_DATACH0FILL 0x1070 #define HDMI_FC_DATACH1FILL 0x1071 #define HDMI_FC_DATACH2FILL 0x1072 diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index cf528c289857..4b3e863c4f8a 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense); void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt); +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8 *channel_status); void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca); void dw_hdmi_audio_enable(struct dw_hdmi *hdmi); void dw_hdmi_audio_disable(struct dw_hdmi *hdmi); -- 2.23.0.162.g0b9fbb3734-goog

5 6

[PATCH] Revert "drm/bridge: adv7511: Attach to DSI host at probe time"
by Rob Clark 13 Sep '19

13 Sep '19

From: Rob Clark <robdclark(a)chromium.org> This reverts commit 83f35bc3a852f1c3892c7474998c5cec707c7ba3. This commit the wrong direction, we should really be changing panel framework to attach dsi host after probe, rather than introducing the same probe-order problem that panels already have to bridges. The reason is, that in order to deal with devices where display is enabled by bootloader and efifb/simplefb is used until the real driver probes, we need to be careful to not touch the hardware until we have all the pieces probed and ready to go, otherwise you will kill the working display, leaving yourself (at least, in the case of real consumer devices that do not have a debug UART) with no good way to debug what went wrong. Signed-off-by: Rob Clark <robdclark(a)chromium.org> --- drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index 98bccace8c1c..f6d2681f6927 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -874,6 +874,9 @@ static int adv7511_bridge_attach(struct drm_bridge *bridge) &adv7511_connector_helper_funcs); drm_connector_attach_encoder(&adv->connector, bridge->encoder); + if (adv->type == ADV7533) + ret = adv7533_attach_dsi(adv); + if (adv->i2c_main->irq) regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0), ADV7511_INT0_HPD); @@ -1219,17 +1222,8 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) drm_bridge_add(&adv7511->bridge); adv7511_audio_init(dev, adv7511); - - if (adv7511->type == ADV7533) { - ret = adv7533_attach_dsi(adv7511); - if (ret) - goto err_remove_bridge; - } - return 0; -err_remove_bridge: - drm_bridge_remove(&adv7511->bridge); err_unregister_cec: i2c_unregister_device(adv7511->i2c_cec); if (adv7511->cec_clk) -- 2.21.0

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dri-devel September 2019