Merge tag 'drm-next-2021-02-19' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "A pretty normal tree, lots of refactoring across the board, ttm, i915,
  nouveau, and bunch of features in various drivers.

  docs:
   - lots of updated docs

  core:
   - require crtc to have unique primary plane
   - fourcc macro fix
   - PCI bar quirk for bar resizing
   - don't sent hotplug on error
   - move vm code to legacy
   - nuke hose only used on old oboslete alpha

  dma-buf:
   - kernel doc updates
   - improved lock tracking

  dp/hdmi:
   - DP-HDMI2.1 protocol converter support

  ttm:
   - bo size handling cleanup
   - release a pinned bo warning
   - cleanup lru handler
   - avoid using pages with drm_prime_sg_to_page_addr_arrays

  cma-helper:
   - prime/mmap fixes

  bridge:
   - add DP support

  gma500:
   - remove gma3600 support

  i915:
   - try eDP fast/narrow link again with fallback
   - Intel eDP backlight control
   - replace display register read/write macros
   - refactor intel_display.c
   - display power improvements
   - HPD code cleanup
   - Rocketlake display fixes
   - Power/backlight/RPM fixes
   - DG1 display fix
   - IVB/BYT clear residuals security fix again
   - make i915 mitigations options via parameter
   - HSW GT1 GPU hangs fixes
   - DG1 workaround hang fixes
   - TGL DMAR hang avoidance
   - Lots of GT fixes
   - follow on fixes for residuals clear
   - gen7 per-engine-reset support
   - HDCP2.2 + HDCP1.4 GEN12 DP MST support
   - TGL clear color support
   - backlight refactoring
   - VRR/Adaptive sync enabling on DP/EDP for TGL+
   - async flips for all ilk+

  amdgpu:
   - rework IH ring handling (Vega/Navi)
   - rework HDP handling (Vega/Navi)
   - swSMU updates for renoir/vangogh
   - Sienna Cichild overdrive support
   - FP16 on DCE8-11 support
   - GPU reset on navy flounder/vangogh
   - SMU profile fixes for APU
   - SR-IOV fixes
   - Vangogh SMU fixes
   - fan speed control fixes

  amdkfd:
   - config handling fix
   - buffer free fix
   - recursive lock warnings fix

  nouveau:
   - Turing MMU fault recovery fixes
   - mDP connectors reporting fix
   - audio locking fixes
   - rework engines/instances code to support new scheme

  tegra:
   - VIC newer firmware support
   - display/gr2d fixes for older tegra
   - pm reference leak fix

  mediatek:
   - SOC MT8183 support
   - decouple sub driver + share mtk mutex driver

  radeon:
   - PCI resource fix for some platforms

  ingenic:
   - pm support
   - 8-bit delta RGB panels

  vmwgfx:
   - managed driver helpers

  vc4:
   - BCM2711 DSI1 support
   - converted to atomic helpers
   - enable 10/12 bpc outputs
   - gem prime mmap helpers
   - CEC fix

  omap:
   - use degamma table
   - CTM support
   - rework DSI support

  imx:
   - stack usage fixes
   - drm managed support
   - imx-tve clock provider leak fix
-

  rcar-du:
   - default mode fixes
   - conversion to managed API

  hisilicon:
   - use simple encoder

  vkms:
   - writeback connector support

  d3:
   - BT2020 support"

* tag 'drm-next-2021-02-19' of git://anongit.freedesktop.org/drm/drm: (1459 commits)
  drm/amdgpu: Set reference clock to 100Mhz on Renoir (v2)
  drm/radeon: OLAND boards don't have VCE
  drm/amdkfd: Fix recursive lock warnings
  drm/amd/display: Add FPU wrappers to dcn21_validate_bandwidth()
  drm/amd/display: Fix potential integer overflow
  drm/amdgpu/display: remove hdcp_srm sysfs on device removal
  drm/amdgpu: fix CGTS_TCC_DISABLE register offset on gfx10.3
  drm/i915/gt: Correct surface base address for renderclear
  drm/i915: Disallow plane x+w>stride on ilk+ with X-tiling
  drm/nouveau/top/ga100: initial support
  drm/nouveau/top: add ioctrl/nvjpg
  drm/nouveau/privring: rename from ibus
  drm/nouveau/nvkm: remove nvkm_subdev.index
  drm/nouveau/nvkm: determine subdev id/order from layout
  drm/nouveau/vic: switch to instanced constructor
  drm/nouveau/sw: switch to instanced constructor
  drm/nouveau/sec2: switch to instanced constructor
  drm/nouveau/sec: switch to instanced constructor
  drm/nouveau/pm: switch to instanced constructor
  drm/nouveau/nvenc: switch to instanced constructor
  ...

4 files changed, 61 insertions, 25 deletions

diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index cf72699cb2bc..efdc56b9d95f 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -85,14 +85,16 @@ struct dma_buf_ops {
 	/**
 	 * @pin:
 	 *
-	 * This is called by dma_buf_pin and lets the exporter know that the
-	 * DMA-buf can't be moved any more.
+	 * This is called by dma_buf_pin() and lets the exporter know that the
+	 * DMA-buf can't be moved any more. The exporter should pin the buffer
+	 * into system memory to make sure it is generally accessible by other
+	 * devices.
 	 *
-	 * This is called with the dmabuf->resv object locked and is mutual
+	 * This is called with the &dmabuf.resv object locked and is mutual
 	 * exclusive with @cache_sgt_mapping.
 	 *
-	 * This callback is optional and should only be used in limited use
-	 * cases like scanout and not for temporary pin operations.
+	 * This is called automatically for non-dynamic importers from
+	 * dma_buf_attach().
 	 *
 	 * Returns:
 	 *
@@ -103,7 +105,7 @@ struct dma_buf_ops {
 	/**
 	 * @unpin:
 	 *
-	 * This is called by dma_buf_unpin and lets the exporter know that the
+	 * This is called by dma_buf_unpin() and lets the exporter know that the
 	 * DMA-buf can be moved again.
 	 *
 	 * This is called with the dmabuf->resv object locked and is mutual
@@ -152,6 +154,12 @@ struct dma_buf_ops {
 	 * On failure, returns a negative error value wrapped into a pointer.
 	 * May also return -EINTR when a signal was received while being
 	 * blocked.
+	 *
+	 * Note that exporters should not try to cache the scatter list, or
+	 * return the same one for multiple calls. Caching is done either by the
+	 * DMA-BUF code (for non-dynamic importers) or the importer. Ownership
+	 * of the scatter list is transferred to the caller, and returned by
+	 * @unmap_dma_buf.
 	 */
 	struct sg_table * (*map_dma_buf)(struct dma_buf_attachment *,
 					 enum dma_data_direction);
@@ -183,24 +191,19 @@ struct dma_buf_ops {
 	 * @begin_cpu_access:
 	 *
 	 * This is called from dma_buf_begin_cpu_access() and allows the
-	 * exporter to ensure that the memory is actually available for cpu
-	 * access - the exporter might need to allocate or swap-in and pin the
-	 * backing storage. The exporter also needs to ensure that cpu access is
-	 * coherent for the access direction. The direction can be used by the
-	 * exporter to optimize the cache flushing, i.e. access with a different
+	 * exporter to ensure that the memory is actually coherent for cpu
+	 * access. The exporter also needs to ensure that cpu access is coherent
+	 * for the access direction. The direction can be used by the exporter
+	 * to optimize the cache flushing, i.e. access with a different
 	 * direction (read instead of write) might return stale or even bogus
 	 * data (e.g. when the exporter needs to copy the data to temporary
 	 * storage).
 	 *
-	 * This callback is optional.
+	 * Note that this is both called through the DMA_BUF_IOCTL_SYNC IOCTL
+	 * command for userspace mappings established through @mmap, and also
+	 * for kernel mappings established with @vmap.
 	 *
-	 * FIXME: This is both called through the DMA_BUF_IOCTL_SYNC command
-	 * from userspace (where storage shouldn't be pinned to avoid handing
-	 * de-factor mlock rights to userspace) and for the kernel-internal
-	 * users of the various kmap interfaces, where the backing storage must
-	 * be pinned to guarantee that the atomic kmap calls can succeed. Since
-	 * there's no in-kernel users of the kmap interfaces yet this isn't a
-	 * real problem.
+	 * This callback is optional.
 	 *
 	 * Returns:
 	 *
@@ -216,9 +219,7 @@ struct dma_buf_ops {
 	 *
 	 * This is called from dma_buf_end_cpu_access() when the importer is
 	 * done accessing the CPU. The exporter can use this to flush caches and
-	 * unpin any resources pinned in @begin_cpu_access.
-	 * The result of any dma_buf kmap calls after end_cpu_access is
-	 * undefined.
+	 * undo anything else done in @begin_cpu_access.
 	 *
 	 * This callback is optional.
 	 *
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b32126d26997..53f4904ee83d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1232,6 +1232,15 @@ void pci_update_resource(struct pci_dev *dev, int resno);
 int __must_check pci_assign_resource(struct pci_dev *dev, int i);
 int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align);
 void pci_release_resource(struct pci_dev *dev, int resno);
+static inline int pci_rebar_bytes_to_size(u64 bytes)
+{
+	bytes = roundup_pow_of_two(bytes);
+
+	/* Return BAR size as defined in the resizable BAR specification */
+	return max(ilog2(bytes), 20) - 20;
+}
+
+u32 pci_rebar_get_possible_sizes(struct pci_dev *pdev, int bar);
 int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size);
 int pci_select_bars(struct pci_dev *dev, unsigned long flags);
 bool pci_device_is_present(struct pci_dev *pdev);
diff --git a/include/linux/soc/mediatek/mtk-mutex.h b/include/linux/soc/mediatek/mtk-mutex.h
new file mode 100644
index 000000000000..6fe4ffbde290
--- /dev/null
+++ b/include/linux/soc/mediatek/mtk-mutex.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ */
+
+#ifndef MTK_MUTEX_H
+#define MTK_MUTEX_H
+
+struct regmap;
+struct device;
+struct mtk_mutex;
+
+struct mtk_mutex *mtk_mutex_get(struct device *dev);
+int mtk_mutex_prepare(struct mtk_mutex *mutex);
+void mtk_mutex_add_comp(struct mtk_mutex *mutex,
+			enum mtk_ddp_comp_id id);
+void mtk_mutex_enable(struct mtk_mutex *mutex);
+void mtk_mutex_disable(struct mtk_mutex *mutex);
+void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
+			   enum mtk_ddp_comp_id id);
+void mtk_mutex_unprepare(struct mtk_mutex *mutex);
+void mtk_mutex_put(struct mtk_mutex *mutex);
+void mtk_mutex_acquire(struct mtk_mutex *mutex);
+void mtk_mutex_release(struct mtk_mutex *mutex);
+
+#endif /* MTK_MUTEX_H */
diff --git a/include/linux/vgaarb.h b/include/linux/vgaarb.h
index 977caf96c8d2..fc6dfeba04a5 100644
--- a/include/linux/vgaarb.h
+++ b/include/linux/vgaarb.h
@@ -121,9 +121,9 @@ extern struct pci_dev *vga_default_device(void);
 extern void vga_set_default_device(struct pci_dev *pdev);
 extern int vga_remove_vgacon(struct pci_dev *pdev);
 #else
-static inline struct pci_dev *vga_default_device(void) { return NULL; };
-static inline void vga_set_default_device(struct pci_dev *pdev) { };
-static inline int vga_remove_vgacon(struct pci_dev *pdev) { return 0; };
+static inline struct pci_dev *vga_default_device(void) { return NULL; }
+static inline void vga_set_default_device(struct pci_dev *pdev) { }
+static inline int vga_remove_vgacon(struct pci_dev *pdev) { return 0; }
 #endif
 
 /*