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2017-06-02drm: omapdrm: Remove unused default display name supportLaurent Pinchart4-22/+0
The default display name is both unused and never set by platform data. Remove default display name module parameter, platform data field and runtime infrastructure. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Remove unused dss_get_core_pdev() functionLaurent Pinchart2-6/+0
The dss_get_core_pdev() function is unused, remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Drop support for non-DT devicesLaurent Pinchart5-109/+35
All OMAP platforms use DT nowadays, drop support for non-DT devices. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Remove duplicate error messages when mapping memoryLaurent Pinchart11-121/+30
The devm_ioremap_resource() call can handle being given a NULL resource, and prints an error message when mapping fails. Switch the remaining devm_ioremap() calls to devm_ioremap_resource() and remove all extraneous resource NULL checks and error messages printed manually by the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Take GEM object reference when exporting dmabufLaurent Pinchart1-12/+2
To ensure that neither the GEM object nor the DRM device goes away while a GEM object exported through dma-buf is still accessible, references must be taken to both the GEM object and the DRM device at export time. The dma-buf release handler already releases the GEM object, but the export handler doesn't take a corresponding reference, which results in a refcount underflow. Fix this by replacing the custom implementation by drm_gem_dmabuf_export() and drm_gem_dmabuf_release() that handle reference counting for us. Fixes: 6ad11bc3a0b8 ("staging: drm/omap: dmabuf/prime support") Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2017-06-02drm: omapdrm: Map pages for DMA in DMA_TO_DEVICE directionLaurent Pinchart2-8/+7
The display engine only reads from memory, there's no need to use bidirectional DMA mappings. Use DMA_TO_DEVICE instead. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: DMA-unmap pages for all buffer types when freeing buffersLaurent Pinchart1-11/+6
Both coherent (uncached) and non-coherent (cached) buffers can have their pages mapped to the device through the DMA mapping API. Make sure to unmap any mapped page when freeing a buffer, regardless of its type. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Fix incorrect usage of the term 'cache coherency'Laurent Pinchart1-7/+15
The is_cache_coherent() function currently returns true when the mapping is not cache-coherent. This isn't a bug as such as the callers interpret cache-coherent as meaning that the driver has to handle the coherency manually, but it is nonetheless very confusing. Fix it and add a bit more documentation to explain how cached buffers are handled. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Rename GEM DMA sync functionsLaurent Pinchart4-9/+9
The omap_gem_cpu_sync() function operates at a page level, while the omap_gem_dma_sync() function operates at a buffer level. Rename them to omap_gem_cpu_sync_page() and omap_gem_dma_sync_buffer() respectively to avoid confusion. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Rename the omap_gem_object addrs field to dma_addrsLaurent Pinchart1-11/+11
The field contains DMA addresses, clarify that by renaming it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Lower indentation level in omap_gem_dma_sync_buffer()Laurent Pinchart1-22/+21
This makes the function more readable. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Rename omap_gem_(get|put)_paddr() to omap_gem_(un)pin()Laurent Pinchart5-24/+39
The reflects the purpose of the function better. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Rename occurrences of paddr to dma_addrLaurent Pinchart5-56/+57
The fields, variables and functions deal with DMA addresses, name them accordingly. The omap_gem_get_paddr() and omap_gem_put_paddr() will be addressed differently separately. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Remove remap argument to omap_gem_get_paddr()Laurent Pinchart5-11/+8
The function is always called with the remap argument set to true. Hardcode that behaviour and remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Add zpos propertyLaurent Pinchart2-1/+5
Create a standard zpos property for every plane as an alias to the omapdrm-specific zorder property. Unlike the zorder property that has to be instantiated for both planes and CRTCs due to backward compatibility, the zpos property is only instantiated for planes. When userspace will have switched to the zpos property the zorder property will be removed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Remove custom plane stateLaurent Pinchart1-52/+6
The custom plane state only encapsulates the standard plane state with adding any custom field. Remove it and use the atomic plane helpers directly. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Store the Z order in the plane state zpos fieldLaurent Pinchart1-14/+7
The DRM core implements a standard "zpos" property to control planes ordering. The omapdrm driver implements a similar property named "zorder". Although we can't switch to DRM core handling of the "zpos" property for backward compatibility reasons, we can store the zorder value in the drm_plane_state zpos field, saving us from adding a custom field to the plane state. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Remove legacy buffer synchronization supportLaurent Pinchart4-270/+6
The omapdrm driver uses a custom API to synchronize with the SGX GPU. This is unusable as such in the mainline kernel as the API is only partially implemented and requires additional out-of-tree patches. Furthermore, as no SGX driver is available in the mainline kernel, the API can't be considered as a stable mainline API. Now that the driver supports synchronization through fences, remove legacy buffer synchronization support. The two userspace ioctls are turned into no-ops to avoid breaking userspace and will be removed in the future. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Use DRM core's atomic commit helperLaurent Pinchart2-106/+15
The DRM core atomic helper now supports asynchronous commits natively. The custom omapdrm implementation isn't needed anymore, remove it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-06-02drm: omapdrm: Handle events when enabling/disabling CRTCsLaurent Pinchart1-8/+22
The driver currently handles vblank events only when updating planes on an already enabled CRTC. The atomic update API however allows requesting an event when enabling or disabling a CRTC. This currently leads to event objects being leaked in the kernel and to events not being sent out. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-05-29drm/i915: Update DRIVER_DATE to 20170529Daniel Vetter1-2/+2
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-05-28Linux 4.12-rc3Linus Torvalds1-1/+1
2017-05-26x86/ftrace: Make sure that ftrace trampolines are not RWXThomas Gleixner1-6/+14
ftrace use module_alloc() to allocate trampoline pages. The mapping of module_alloc() is RWX, which makes sense as the memory is written to right after allocation. But nothing makes these pages RO after writing to them. Add proper set_memory_rw/ro() calls to protect the trampolines after modification. Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1705251056410.1862@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-05-26x86/mm/ftrace: Do not bug in early boot on irqs_disabled in cpu_flush_range()Steven Rostedt (VMware)1-1/+1
With function tracing starting in early bootup and having its trampoline pages being read only, a bug triggered with the following: kernel BUG at arch/x86/mm/pageattr.c:189! invalid opcode: 0000 [#1] SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 4.12.0-rc2-test+ #3 Hardware name: MSI MS-7823/CSM-H87M-G43 (MS-7823), BIOS V1.6 02/22/2014 task: ffffffffb4222500 task.stack: ffffffffb4200000 RIP: 0010:change_page_attr_set_clr+0x269/0x302 RSP: 0000:ffffffffb4203c88 EFLAGS: 00010046 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 00000001b6000000 RDX: ffffffffb4203d40 RSI: 0000000000000000 RDI: ffffffffb4240d60 RBP: ffffffffb4203d18 R08: 00000001b6000000 R09: 0000000000000001 R10: ffffffffb4203aa8 R11: 0000000000000003 R12: ffffffffc029b000 R13: ffffffffb4203d40 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff9a639ea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff9a636b384000 CR3: 00000001ea21d000 CR4: 00000000000406b0 Call Trace: change_page_attr_clear+0x1f/0x21 set_memory_ro+0x1e/0x20 arch_ftrace_update_trampoline+0x207/0x21c ? ftrace_caller+0x64/0x64 ? 0xffffffffc029b000 ftrace_startup+0xf4/0x198 register_ftrace_function+0x26/0x3c function_trace_init+0x5e/0x73 tracer_init+0x1e/0x23 tracing_set_tracer+0x127/0x15a register_tracer+0x19b/0x1bc init_function_trace+0x90/0x92 early_trace_init+0x236/0x2b3 start_kernel+0x200/0x3f5 x86_64_start_reservations+0x29/0x2b x86_64_start_kernel+0x17c/0x18f secondary_startup_64+0x9f/0x9f ? secondary_startup_64+0x9f/0x9f Interrupts should not be enabled at this early in the boot process. It is also fine to leave interrupts enabled during this time as there's only one CPU running, and on_each_cpu() means to only run on the current CPU. If early_boot_irqs_disabled is set, it is safe to run cpu_flush_range() with interrupts disabled. Don't trigger a BUG_ON() in that case. Link: http://lkml.kernel.org/r/20170526093717.0be3b849@gandalf.local.home Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>