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2017-04-03drm/omap: dss: Support for detecting display stack readinessPeter Ujfalusi3-0/+111
When omapdss is loaded (all core components are in place) create a list of devices used in the display graph. This list later can be used by omapdrm via the omapdss_stack_is_ready() function to check that these components are loaded. Based on this information, omapdrm can defer probe in case when the omapdss stack is not ready yet. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: dss: Functions to check components in the display/output listPeter Ujfalusi3-0/+34
The functions can be used to check a component (by it's of_node) if it is part of the omapdss display or output list. If the component is found, it means that the driver is loaded. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: fix replication logicTomi Valkeinen3-6/+6
DSS uses "replication logic" to convert color components from smaller bit widths to bigger bit widths. Without replication logic, the color component would be shifted and the least significant bits would be left at 0, whereas with replication logic, the least significat bits will be filled with the most significant bit. For some reason omapdrm leaves replication logic always to off, which, in the most common case, means that showing 16-bit RGB colors on 24-bit display gives a bit darker colors than expected. The reset value of the replication logic bit is enabled, and it should always be set, as there's no practical reason to disable it. This patch removes the option to disable it from omapdrm, and always sets it to enabled in dispc. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-04-03drm/omap: remove unused dispc_wb_enable & dispc_wb_is_enabledTomi Valkeinen2-12/+0
Remove two unused WB functions. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-04-03drm/omap: remove all EXPORT_SYMBOLs from dispc.cTomi Valkeinen3-96/+33
omapdrm now uses dispc_ops instead of direct function calls so we can remove all EXPORT_SYMBOLs from dispc. Most of the functions can also be made static, but a few are used outside dispc.c. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: use dispc_opsTomi Valkeinen5-39/+57
Change omapdrm to get dispc_ops and use that to call the dispc functions instead or direct function calls. The change is very straightforward. The only problem was in omap_crtc_init() which calls pipe2vbl(crtc), and at that point of time the crtc->dev link, which is used to get the dispc_ops, has not been set up yet. This patch makes omap_crtc_init() skip the call to pipe2vbl() and instead calls dispc_ops->mgr_get_vsync_irq() directly. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: fill dispc_opsTomi Valkeinen1-0/+40
This patch changes the current omapdss driver to fill a dispc_ops struct and set it to omapdss-base. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: add dispc_opsTomi Valkeinen2-0/+63
We want to change the dispc API from plain functions to a struct with functions pointers, so that omapdrm can call either omapdss or omapdss6 depending on the platform. This patch adds 'struct dispc_ops' and adds functions to omapdss-base to set and get the ops. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: move dispc related dss-feat funcs to dispcTomi Valkeinen7-7/+31
omapdrm still uses a few non-dispc functions: dss_feat_get_num_mgrs(), dss_feat_get_num_ovls() and dss_feat_get_supported_color_modes(). We want to provide omapdrm a single dispc_ops function pointer struct so that omapdrm will use either the current omapdss or the new omapdss6 driver depending on the platform. Those three functions are really dispc functions, but are located in the dss_features.c for legacy reasons. This patch adds similar functionss to the dispc, and changes omapdrm to use those new functions. Underneath the functions still call the functions from dss_feature.c. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: move display, dss-of, output to omapdss-baseTomi Valkeinen6-11/+8
This patch moves the common parts of omapdss to omapdss-base so that both the current omapdss driver and the new omapdss6 driver can use them. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: display: don't use dsi_get_pixel_size()Tomi Valkeinen3-12/+4
display.c uses dsi_get_pixel_size() which is implemented in the DSI driver, and we won't have that in the omapdss-base module, to which we want to move display.c This patch changes display.c not to use dsi_get_pixel_size(). The call can be replaced with a simple check for OMAP_DSS_DSI_FMT_RGB565. We can also make dsi_get_pixel_size() static as it's no longer used outside dsi.c. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: output: use dev_err instead of DSSERRTomi Valkeinen1-5/+8
We don't have omapdss's custom error printing functions in the common omapdss-base module, to which we want to move output.c. This patch changes output.c to use dev_err instead of DSSERR so that it doesn't depend on DSSERR. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-04-03drm/omap: move dss_initialized to omapdss-baseTomi Valkeinen3-10/+18
omapdss_is_initialized() is used to find out if omapdss has been probed successfully. This patch moves the related code to the common omapdss-base module, so that the same support will be there for both omapdss and omapdss6. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: add omapdss-base.koTomi Valkeinen3-0/+14
We are working towards enabling omapdss6, which will consists of a new dss, dispc and dpi drivers. omapdss6 will be a new module. The panel, encoder and omapdrm will need to use either the current omapdss driver or the new omapdss6 driver, depending on the platform. This will be implemented with a common base module and function pointers. This patch adds a skeleton omapdss-base.ko module, to which we'll be moving common dss functionality like registration of the panels. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: fix HDMI sync polaritiesTomi Valkeinen1-5/+7
While implementing writeback support, odd behavior of WBDELAYCOUNT was observed with the combination of WB capture and HDMI. The result of the debugging was that the HDMI sync polarities are not set correctly. The current code sets the sync polarities going from HDMI WP to DISPC according to the video mode used, which seems to work normally fine, but causes problems with WB as WB expects the syncs to be active-high. This patch changes the HDMI sync polarities so that the DISPC always gets active-high syncs from HDMI WP, and the HDMI core gets sync polarities according to the used video mode. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-04-03drm/omap: Add support for render nodesHemant Hariyani1-7/+13
Add support for render nodes in omap driver and allow required ioctls to be accessible via render nodes. This enables unprivileged clients to allocate resources like GEM buffers for rendering their content into. Mode setting (KMS ioctls) is not allowed using render nodes. These buffers are then shared with a previleged process (e.g compositor) that has mode setting access. An example of this use case is Android where the hardware composer is the only master and has mode setting access. Every other client then uses render node(e.g /dev/dri/renderD128 to allocate and use its buffers. Signed-off-by: Hemant Hariyani <hemanthariyani@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: improve DPI clock selection on DRA7xxTomi Valkeinen1-10/+40
The clock source selection for the LCD outputs is too hardcoded at the moment. For example, LCD3 is set to use PLL2_1, and PLL2 doesn't exist on DRA72x SoCs. There are quite many ways to configure the clocks, even using HDMI PLL for LCD outputs, but enabling full configuration of the clocks is rather tricky. This patch improves the situation a bit by checking if the PLL about to be used exists, and if not, tries another one. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: decrease min width & heightTomi Valkeinen1-2/+2
mode_config's min_width and min_height are both set to 32, which is overly restrictive. The real limits depend on whether we're configuring a crtc or a plane, but a limit of 8x2 is safe for both cases. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-04-03drm/omap: remove divider constraint from hsdivTomi Valkeinen1-8/+0
The driver only uses even dividers for hsdiv when pclk >= 100MHz, as odd dividers can create uneven duty cycle. However, while this holds true for some dividers like DISPC's LCK and PCK dividers, it is not actually true for hsdiv. hsdiv always produces even duty cycle, so the constraint can be removed. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-04-03drm/omap: refactor CRTC HW property setupTomi Valkeinen1-8/+17
The current driver doesn't expose any of the CRTC HW properties like background color or transparency key, and sets them at CRTC enable time. Refactor this into a separate function and call that function from omap_crtc_atomic_flush(). This is the behavior we want when the properties can be configured, so this patch makes it easier to add patches later which implement those properties. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03drm/omap: work-around for errata i886Tomi Valkeinen1-8/+9
DRA7 errata i886 (FPDLink PLL Unlocks With Certain SoC PLL M/N Values) says that FPDLink is sensitive to jitter on the vout clock, and that low PLL M and N values result in more jitter than high M and N values. This patch implements a workaround for the problem by changing the PLL setup to search for clocks starting from high M and N values, instead of low values. This should not cause any functional change, and only reduces the jitter. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-03-31drm/vmwgfx: Properly check display/scanout surface sizeSinclair Yeh3-1/+32
The scanout surface size is the smaller of max texture size and max STDU size. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Support topology greater than texture sizeSinclair Yeh3-1/+253
Most of the display servers today use a single surface to represent the entire desktop even if it's stretched across multiple screens. For vmwgfx with STDU, the maximum surface size is limited to the maximum texture size on the host. On a 2D VM, this limits our ability to support configurations with more than one 4K monitor. To get past this limitation, we will now allow using a large DMA buf as the framebuffer, and take care of blitting contents from this DMA buf to the display buffer. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Define an overlaid handle_close ioctl.Thomas Hellstrom1-0/+24
Instead of providing an ioctl for each handle type, provide a single handle_close ioctl, and reuse the UNREF_DMABUF ioctl. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2017-03-31drm/vmwgfx: Re-implement the stream resource as a simple resource.Thomas Hellstrom3-255/+169
Provide and document a reference implementation. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2017-03-31drm/vmwgfx: Introduce a simple resource typeThomas Hellstrom3-1/+298
The callbacks we need to provide to many resources are very similar, so provide a simple resource type with a number of helpers for these callbacks. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2017-03-31drm/vmwgfx: Revert "drm/vmwgfx: Replace numeric parameter like 0444 with macro"Øyvind A. Holm1-4/+4
This reverts commit 2d8e60e8b074 ("drm/vmwgfx: Replace numeric parameter like 0444 with macro") The commit belongs to the series of 1285 patches sent to LKML on 2016-08-02, it changes the representation of file permissions from the octal value "0600" to "S_IRUSR | S_IWUSR". The general consensus was that the changes does not increase readability, quite the opposite; 0600 is easier to parse mentally than S_IRUSR | S_IWUSR. It also causes argument inconsistency, due to commit 04319d89fbec ("drm/vmwgfx: Add an option to change assumed FB bpp") that added another call to module_param_named() where the permissions are written as 0600. Signed-off-by: Øyvind A. Holm <sunny@sunbase.org> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2017-03-31drm/vmwgfx: Fix LDU X blank screen until mode change issueSinclair Yeh1-20/+21
vmw_ldu_crtc_helper_commit() is not called if drm_atomic_crtc_needs_modeset() decides nothing related to CRTC timing has changed. So a better place for this code is in vmw_ldu_primary_plane_atomic_update() since we will need to update ld->fb every time the FB is updated. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Skipping fbdev fb pinning for lduSinclair Yeh1-7/+16
Pinning fbdev's FB at the start of VRAM prevents X from pinning its FB. Since for ldu, the fb would be pinned anyway during a mode set, just skip pinning it in fbdev. This is not the best solution, but since ldu is not used much anymore, it seems like a reasonable workaround. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Explicityly track screen target width and heightSinclair Yeh1-3/+8
We can no longer make the assumption that vmw_stdu_update_st() will be called when there's a valid display surface attached. So instead of using display_srf for width and height, make a record of these paremeters when the screen target is first defined. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Turn on DRIVER_ATOMIC flagSinclair Yeh4-4/+3
Now that the legacy path has been tested, turn on the DRIVER_ATOMIC flag so user mode driver can start going through the Atomic path. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Daniel Vetter <daniel@ffwll.ch>
2017-03-31drm/vmwgfx: Switch over to internal atomic API for SOU and LDUSinclair Yeh2-295/+25
Switch over to internal atomic API. This completes the atomic internal atomic switch for all the Display Units. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Switch over to internal atomic API for STDUSinclair Yeh3-295/+51
Switch over to using internal atomic API for mode set. This removes the legacy set_config API, replacing it with drm_atomic_helper_set_config(). The DRM helper will use various vmwgfx-specific atomic functions to set a mode. DRIVER_ATOMIC capability flag is not yet set, so the user mode will still use the legacy mode set IOCTL. v2: * Avoid a clash between page-flip pinning and setcrtc pinning, modify the page-flip code to use the page-flip helper and the atomic callbacks. To enable this, we will need to add a wrapper around atomic_commit. * Add vmw_kms_set_config() to work around vmwgfx xorg driver bug Signed-off-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Fixes to vmwgfx_fbSinclair Yeh1-1/+3
1. When unsetting a mode, num_connector should be set to zero 2. The pixel_format field needs to be initialized as newer DRM internal functions checks this field 3. Take the drm_modeset_lock_all() because vmw_fb_kms_detach() can change current mode Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Add and connect atomic state object check/commitSinclair Yeh1-0/+48
This connects the main state object check and commit function. v2 * Use drm_atomic_helper_commit() rather than a vmwgfx-specific one Signed-off-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Daniel Vetter <daniel@ffwll.ch>
2017-03-31drm/vmwgfx: Add and connect connector helper functionSinclair Yeh3-0/+24
These helpers won't be called until we flip on the atomic support flag or set drm_crtc_funcs->set_config to using the atomic helper. v2 Use drm_atomic_helper_best_encoder() rather than a vmwgfx-specific one Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Daniel Vetter <daniel@ffwll.ch>
2017-03-31drm/vmwgfx: Add and connect plane helper functionsSinclair Yeh5-1/+695
Refactor previous FB and cursor plane update code into their atomic counterparts: check, update, prepare, cleanup, and disable. These helpers won't be called until we flip on the atomic support flag or set drm_crtc_funcs->set_config to using the atomic helper. v2: * Removed unnecessary pinning of cursor surface * Added a few function headers v3: * Set clip region equal to the destination region * Fixed surface pinning policy * Enable SVGA mode in vmw_sou_primary_plane_prepare_fb Signed-off-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Add and connect CRTC helper functionsSinclair Yeh5-0/+379
Atomic mode set requires us to refactor existing vmw_stdu_crtc_set_config code into sections that check the validity of the new mode, and sections that actually program the hardware state. vmw_du_crtc_atomic_check() takes CRTC-related checking code. In a later patch, vmw_du_primary_plane_atomic_check() will take framebuffer-related checking code. These helpers won't be called until we flip on the atomic support flag or set drm_crtc_funcs->set_config to using the atomic helper. v2: * The state->num_connector is actually the total number of potential connectors, not just the one associated with the display unit. The proper one to check is ->connector_mask. * Add the check to only allow plane state to be the same as crtc state (Thanks to mlankhorst) * Make sure to turn on SVGA mode before using VRAM. SVGA mode is disabled in master_drop if dbdev is not running. v3: * Moved dot clock override to crtc_atomic_check Signed-off-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Daniel Vetter <daniel@ffwll.ch>
2017-03-31drm/vmwgfx: Connector atomic stateSinclair Yeh5-7/+204
Add connector handling functions. Start tracking is_implicity in the connector state. Eventually, this field should be tracked exclusively in a connector state. Now that plane and connector states have been created, we can also activate the code that use CRTC state. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Plane atomic stateSinclair Yeh5-0/+150
Add plane state handling functions. We have to keep track of a few plane states so we cannot use the DRM helper for this. Created vmw_plane_state along with functions to reset, duplicate, and destroty it. v2 * Removed cursor clean up special case Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Daniel Vetter <daniel@ffwll.ch>
2017-03-31drm/vmwgfx: CRTC atomic stateSinclair Yeh5-3/+131
Create and Add CRTC state. We currently do not track any properties or custom states so we can technically use the DRM helpers. Creating this code just to make potential future additions easier. Most of the new code will be compiled but not enabled until plane/connector state handling code is also in place. This is the first of a series to enable atomic mode set for vmwgfx. The atomic enabling effort was done in collaboration with Thomas Hellstrom and the VMware Graphics Team. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Add universal plane supportSinclair Yeh7-198/+398
Universal support is prerequisite for atomic mode set. Explicitly create planes for the cursor and the primary FB. With a functional cursor plane, the DRM will no longer use the legacy cursor_set2 and cursor_move entry points. Signed-off-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-31drm/vmwgfx: Removed unused snooper.crtc fieldSinclair Yeh3-4/+0
This field is not being used anymore Signed-off-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
2017-03-30apple-gmux: Don't switch external DP port on 2011+ MacBook ProsLukas Wunner1-1/+30
On MacBook Pros introduced 2011 and onward, external DP ports are combined DP/Thunderbolt ports that are no longer fully switchable between GPUs, they can only be driven by the discrete GPU. More specifically, the Main Link pins (which transport the actual video and audio streams) are soldered to the discrete GPU, whereas the AUX Channel pins are switchable. Because the integrated GPU is missing the Main Link, external displays appear to it as phantoms which fail to link-train. Force the AUX channel to the discrete GPU on these models to avoid any confusion. Document the switching policy implemented by this commit. Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: http://patchwork.freedesktop.org/patch/msgid/4d1fcc92d1960049e2cff997fbd2d74e45e84e49.1489145162.git.lukas@wunner.de
2017-03-30drm/nouveau: Don't register Thunderbolt eGPU with vga_switcherooLukas Wunner1-1/+9
An external Thunderbolt GPU can neither drive the laptop's panel nor be powered off by the platform, so there's no point in registering it with vga_switcheroo. In fact, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU, resulting in a lockup. Cc: Ben Skeggs <bskeggs@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: http://patchwork.freedesktop.org/patch/msgid/8e733152b13e7c14501ad5af45c1c5c736584111.1489145162.git.lukas@wunner.de
2017-03-30drm/amdgpu: Don't register Thunderbolt eGPU with vga_switcherooLukas Wunner2-3/+7
An external Thunderbolt GPU can neither drive the laptop's panel nor be powered off by the platform, so there's no point in registering it with vga_switcheroo. In fact, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU, resulting in a lockup. Moreover AMD's Windows driver special-cases Thunderbolt as well. Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: http://patchwork.freedesktop.org/patch/msgid/701a8e89ce8ac39734736ab779558b6a4042a19e.1489145162.git.lukas@wunner.de
2017-03-30drm/radeon: Don't register Thunderbolt eGPU with vga_switcherooLukas Wunner2-3/+7
An external Thunderbolt GPU can neither drive the laptop's panel nor be powered off by the platform, so there's no point in registering it with vga_switcheroo. In fact, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU, resulting in a lockup. Moreover AMD's Windows driver special-cases Thunderbolt as well. Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: http://patchwork.freedesktop.org/patch/msgid/72d8a9645aece3eff44e116303f0fec8be061c88.1489145162.git.lukas@wunner.de
2017-03-30PCI: Recognize Thunderbolt devicesLukas Wunner3-0/+46
Detect on probe whether a PCI device is part of a Thunderbolt controller. Intel uses a Vendor-Specific Extended Capability (VSEC) with ID 0x1234 on such devices. Detect presence of this VSEC and cache it in a newly added is_thunderbolt bit in struct pci_dev. Also, add a helper to check whether a given PCI device is situated on a Thunderbolt daisy chain (i.e., below a PCI device with is_thunderbolt set). The necessity arises from the following: * If an external Thunderbolt GPU is connected to a dual GPU laptop, that GPU is currently registered with vga_switcheroo even though it can neither drive the laptop's panel nor be powered off by the platform. To vga_switcheroo it will appear as if two discrete GPUs are present. As a result, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU which may not be runtime suspended at all at this moment. The solution is to not register external GPUs with vga_switcheroo, which necessitates a way to recognize if they're on a Thunderbolt daisy chain. * Dual GPU MacBook Pros introduced 2011+ can no longer switch external DisplayPort ports between GPUs. (They're no longer just used for DP but have become combined DP/Thunderbolt ports.) The driver to switch the ports, drivers/platform/x86/apple-gmux.c, needs to detect presence of a Thunderbolt controller and, if found, keep external ports permanently switched to the discrete GPU. v2: Make kerneldoc for pci_is_thunderbolt_attached() more precise, drop portion of commit message pertaining to separate series. (Bjorn Helgaas) Cc: Andreas Noever <andreas.noever@gmail.com> Cc: Michael Jamet <michael.jamet@intel.com> Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Amir Levy <amir.jer.levy@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: http://patchwork.freedesktop.org/patch/msgid/0ab165a4a35c0b60f29d4c306c653ead14fcd8f9.1489145162.git.lukas@wunner.de
2017-03-30MAINTAINERS: Add Lukas Wunner as reviewer for vga_switcherooLukas Wunner1-0/+10
I've been contributing to vga_switcheroo for the past two years and by now am fairly familiar with it, so danvet suggested that I add myself as reviewer. While at it, add missing file pattern for vga_switcheroo.h + vgaarb.h to the DRM and DRM-MISC sections such that get_maintainer.pl returns dri-devel@ and the drm-misc maintainers. Suggested-and-acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: http://patchwork.freedesktop.org/patch/msgid/ff2320a0790d039e714cf352cf32ec16fa370627.1490623913.git.lukas@wunner.de
2017-03-30drm: Fix locking gotcha in page_flip ioctlDaniel Vetter1-1/+1
We want to lock the primary plane, not the cursor (which might be optional). Real bad case of copy-paste fail, unfortunately our CI didn't catch that because i915 does have a cursor plane. Reported-by: Eric Anholt <eric@anholt.net> Fixes: 29dc0d1de182 ("drm: Roll out acquire context for the page_flip ioctl") Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170330204831.8225-1-daniel.vetter@ffwll.ch Tested-by: Eric Anholt <eric@anholt.net> Reviewed-by: Harry Wentland <harry.wentland@amd.com>