linux/drivers/gpu/ipu-v3, branch v4.14

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02T10:10:55Z

Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

gpu: ipu-v3: pre: implement workaround for ERR009624

2017-10-11T10:04:24Z

The PRE has a bug where a software write to the CTRL register can block the setting of the ENABLE bit by the hardware in auto repeat mode. When this happens the PRE will fail to handle new jobs. To work around this software must not write to CTRL register when the PRE store engine is inside the unsafe window, where a hardware update to the ENABLE bit may happen. Signed-off-by: Lucas Stach [p.zabel@pengutronix.de: rebased before PRE tiled prefetch support] Signed-off-by: Philipp Zabel

gpu: ipu-v3: prg: wait for double buffers to be filled on channel startup

2017-10-11T10:04:23Z

Wait for both double buffer to be filled when first starting a channel. This makes channel startup a lot more reliable, probably because it allows the internal state machine to settle before the requests from the IPU are coming in. Signed-off-by: Lucas Stach [p.zabel@pengutronix.de: rebased before switch to runtime PM] Signed-off-by: Philipp Zabel

gpu: ipu-v3: Allow channel burst locking on i.MX6 only

2017-10-11T08:45:06Z

The IDMAC_LOCK_EN registers on i.MX51 have a different layout, and on i.MX53 enabling the lock feature causes bursts to get lost. Restrict enabling the burst lock feature to i.MX6. Reported-by: Patrick Brünn Fixes: 790cb4c7c954 ("drm/imx: lock scanout transfers for consecutive bursts") Tested-by: Patrick Brünn Signed-off-by: Philipp Zabel

Merge tag 'drm-for-v4.14' of git://people.freedesktop.org/~airlied/linux

2017-09-04T00:02:26Z

Pull drm updates from Dave Airlie: "This is the main drm pull request for 4.14 merge window. I'm sending this early, as my continuing journey into fatherhood is occurring really soon now, I'm going to be mostly useless for the next couple of weeks, though I may be able to read email, I doubt I'll be doing much patch applications or git sending. If anything urgent pops up I've asked Daniel/Jani/Alex/Sean to try and direct stuff towards you. Outside drm changes: Some rcar-du updates that touch the V4L tree, all acks should be in place. It adds one export to the radix tree code for new i915 use case. There are some minor AGP cleanups (don't see that too often). Changes to the vbox driver in staging to avoid breaking compilation. Summary: core: - Atomic helper fixes - Atomic UAPI fixes - Add YCBCR 4:2:0 support - Drop set_busid hook - Refactor fb_helper locking - Remove a bunch of internal APIs - Add a bunch of better default handlers - Format modifier/blob plane property added - More internal header refactoring - Make more internal API names consistent - Enhanced syncobj APIs (wait/signal/reset/create signalled) bridge: - Add Synopsys Designware MIPI DSI host bridge driver tiny: - Add Pervasive Displays RePaper displays - Add support for LEGO MINDSTORMS EV3 LCD i915: - Lots of GEN10/CNL support patches - drm syncobj support - Skylake+ watermark refactoring - GVT vGPU 48-bit ppgtt support - GVT performance improvements - NOA change ioctl - CCS (color compression) scanout support - GPU reset improvements amdgpu: - Initial hugepage support - BO migration logic rework - Vega10 improvements - Powerplay fixes - Stop reprogramming the MC - Fixes for ACP audio on stoney - SR-IOV fixes/improvements - Command submission overhead improvements amdkfd: - Non-dGPU upstreaming patches - Scratch VA ioctl - Image tiling modes - Update PM4 headers for new firmware - Drop all BUG_ONs. nouveau: - GP108 modesetting support. - Disable MSI on big endian. vmwgfx: - Add fence fd support. msm: - Runtime PM improvements exynos: - NV12MT support - Refactor KMS drivers imx-drm: - Lock scanout channel to improve memory bw - Cleanups etnaviv: - GEM object population fixes tegra: - Prep work for Tegra186 support - PRIME mmap support sunxi: - HDMI support improvements - HDMI CEC support omapdrm: - HDMI hotplug IRQ support - Big driver cleanup - OMAP5 DSI support rcar-du: - vblank fixes - VSP1 updates arcgpu: - Minor fixes stm: - Add STM32 DSI controller driver dw_hdmi: - Add support for Rockchip RK3399 - HDMI CEC support atmel-hlcdc: - Add 8-bit color support vc4: - Atomic fixes - New ioctl to attach a label to a buffer object - HDMI CEC support - Allow userspace to dictate rendering order on submit ioctl" * tag 'drm-for-v4.14' of git://people.freedesktop.org/~airlied/linux: (1074 commits) drm/syncobj: Add a signal ioctl (v3) drm/syncobj: Add a reset ioctl (v3) drm/syncobj: Add a syncobj_array_find helper drm/syncobj: Allow wait for submit and signal behavior (v5) drm/syncobj: Add a CREATE_SIGNALED flag drm/syncobj: Add a callback mechanism for replace_fence (v3) drm/syncobj: add sync obj wait interface. (v8) i915: Use drm_syncobj_fence_get drm/syncobj: Add a race-free drm_syncobj_fence_get helper (v2) drm/syncobj: Rename fence_get to find_fence drm: kirin: Add mode_valid logic to avoid mode clocks we can't generate drm/vmwgfx: Bump the version for fence FD support drm/vmwgfx: Add export fence to file descriptor support drm/vmwgfx: Add support for imported Fence File Descriptor drm/vmwgfx: Prepare to support fence fd drm/vmwgfx: Fix incorrect command header offset at restart drm/vmwgfx: Support the NOP_ERROR command drm/vmwgfx: Restart command buffers after errors drm/vmwgfx: Move irq bottom half processing to threads drm/vmwgfx: Don't use drm_irq_[un]install ...

gpu: ipu-v3: add DRM dependency

2017-08-11T08:31:13Z

The new PRE/PRG driver code causes a link failure when IPUv3 is built-in, but DRM is built as a module: drivers/gpu/ipu-v3/ipu-pre.o: In function `ipu_pre_configure': ipu-pre.c:(.text.ipu_pre_configure+0x18): undefined reference to `drm_format_info' drivers/gpu/ipu-v3/ipu-prg.o: In function `ipu_prg_format_supported': ipu-prg.c:(.text.ipu_prg_format_supported+0x8): undefined reference to `drm_format_info' Adding a Kconfig dependency on DRM means we don't run into this problem any more. If DRM is disabled altogether, the IPUv3 driver is built without PRE/PRG support. Fixes: ea9c260514c1 ("gpu: ipu-v3: add driver for Prefetch Resolve Gasket") Link: https://patchwork.kernel.org/patch/9636665/ Signed-off-by: Arnd Bergmann [p.zabel@pengutronix.de: changed the dependency from DRM to DRM || !DRM, since the link failure only happens when DRM=m and IPUV3_CORE=y. Modified the commit message to reflect this.] Signed-off-by: Philipp Zabel

drm: Convert to using %pOF instead of full_name

2017-07-26T11:45:06Z

Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring Cc: Russell King Cc: David Airlie Cc: Daniel Vetter Cc: Jani Nikula Cc: Sean Paul Cc: Inki Dae Cc: Joonyoung Shim Cc: Seung-Woo Kim Cc: Kyungmin Park Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: Javier Martinez Canillas Cc: Xinliang Liu Cc: Rongrong Zou Cc: Xinwei Kong Cc: Chen Feng Cc: CK Hu Cc: Philipp Zabel Cc: Matthias Brugger Cc: Neil Armstrong Cc: Carlo Caione Cc: Kevin Hilman Cc: Thierry Reding Cc: Laurent Pinchart Cc: Mark Yao Cc: Heiko Stuebner Cc: Maxime Ripard Cc: Chen-Yu Tsai Cc: Jyri Sarha Cc: Tomi Valkeinen Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Partially-Reviewed-by: Laurent Pinchart Reviewed-by: Philipp Zabel Acked-by: Maxime Ripard [seanpaul changed subject prefix and fixed conflict in stm/ltdc.c] Signed-off-by: Sean Paul Signed-off-by: Daniel Vetter

BackMerge tag 'v4.12-rc5' into drm-next

2017-06-16T03:58:27Z

Linux 4.12-rc5 for nouveau fixes

gpu: ipu-v3: vdic: include AUTO field order bit in ipu_vdi_set_field_order

2017-06-08T06:57:20Z

The field order selection in VDIC_C register uses different bits depending on whether the VDIC is receiving from a CSI ("AUTO") or from memory ("MAN"). Since the VDIC cannot receive from both CSI and memory at the same time, set or clear both field order bits to cover both cases. Signed-off-by: Steve Longerbeam Signed-off-by: Philipp Zabel

gpu: ipu-v3: remove interrupt busy waiting routine

2017-06-08T06:57:19Z

This is not used anymore since commit eb8c88808c83 ("drm/imx: add deferred plane disabling"), remove it. Signed-off-by: Philipp Zabel