Merge tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Lots of work all over, Intel improving DG2 support, amdkfd CRIU
  support, msm new hw support, and faster fbdev support.

  dma-buf:
   - rename dma-buf-map to iosys-map

  core:
   - move buddy allocator to core
   - add pci/platform init macros
   - improve EDID parser deep color handling
   - EDID timing type 7 support
   - add GPD Win Max quirk
   - add yes/no helpers to string_helpers
   - flatten syncobj chains
   - add nomodeset support to lots of drivers
   - improve fb-helper clipping support
   - add default property value interface

  fbdev:
   - improve fbdev ops speed

  ttm:
   - add a backpointer from ttm bo->ttm resource

  dp:
   - move displayport headers
   - add a dp helper module

  bridge:
   - anx7625 atomic support, HDCP support

  panel:
   - split out panel-lvds and lvds bindings
   - find panels in OF subnodes

  privacy:
   - add chromeos privacy screen support

  fb:
   - hot unplug fw fb on forced removal

  simpledrm:
   - request region instead of marking ioresource busy
   - add panel oreintation property

  udmabuf:
   - fix oops with 0 pages

  amdgpu:
   - power management code cleanup
   - Enable freesync video mode by default
   - RAS code cleanup
   - Improve VRAM access for debug using SDMA
   - SR-IOV rework special register access and fixes
   - profiling power state request ioctl
   - expose IP discovery via sysfs
   - Cyan skillfish updates
   - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates
   - expose benchmark tests via debugfs
   - add module param to disable XGMI for testing
   - GPU reset debugfs register dumping support

  amdkfd:
   - CRIU support
   - SDMA queue fixes

  radeon:
   - UVD suspend fix
   - iMac backlight fix

  i915:
   - minimal parallel submission for execlists
   - DG2-G12 subplatform added
   - DG2 programming workarounds
   - DG2 accelerated migration support
   - flat CCS and CCS engine support for XeHP
   - initial small BAR support
   - drop fake LMEM support
   - ADL-N PCH support
   - bigjoiner updates
   - introduce VMA resources and async unbinding
   - register definitions cleanups
   - multi-FBC refactoring
   - DG1 OPROM over SPI support
   - ADL-N platform enabling
   - opregion mailbox #5 support
   - DP MST ESI improvements
   - drm device based logging
   - async flip optimisation for DG2
   - CPU arch abstraction fixes
   - improve GuC ADS init to work on aarch64
   - tweak TTM LRU priority hint
   - GuC 69.0.3 support
   - remove short term execbuf pins

  nouveau:
   - higher DP/eDP bitrates
   - backlight fixes

  msm:
   - dpu + dp support for sc8180x
   - dp support for sm8350
   - dpu + dsi support for qcm2290
   - 10nm dsi phy tuning support
   - bridge support for dp encoder
   - gpu support for additional 7c3 SKUs

  ingenic:
   - HDMI support for JZ4780
   - aux channel EDID support

  ast:
   - AST2600 support
   - add wide screen support
   - create DP/DVI connectors

  omapdrm:
   - fix implicit dma_buf fencing

  vc4:
   - add CSC + full range support
   - better display firmware handoff

  panfrost:
   - add initial dual-core GPU support

  stm:
   - new revision support
   - fb handover support

  mediatek:
   - transfer display binding document to yaml format.
   - add mt8195 display device binding.
   - allow commands to be sent during video mode.
   - add wait_for_event for crtc disable by cmdq.

  tegra:
   - YUV format support

  rcar-du:
   - LVDS support for M3-W+ (R8A77961)

  exynos:
   - BGR pixel format for FIMD device"

* tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm: (1529 commits)
  drm/i915/display: Do not re-enable PSR after it was marked as not reliable
  drm/i915/display: Fix HPD short pulse handling for eDP
  drm/amdgpu: Use drm_mode_copy()
  drm/radeon: Use drm_mode_copy()
  drm/amdgpu: Use ternary operator in `vcn_v1_0_start()`
  drm/amdgpu: Remove pointless on stack mode copies
  drm/amd/pm: fix indenting in __smu_cmn_reg_print_error()
  drm/amdgpu/dc: fix typos in comments
  drm/amdgpu: fix typos in comments
  drm/amd/pm: fix typos in comments
  drm/amdgpu: Add stolen reserved memory for MI25 SRIOV.
  drm/amdgpu: Merge get_reserved_allocation to get_vbios_allocations.
  drm/amdkfd: evict svm bo worker handle error
  drm/amdgpu/vcn: fix vcn ring test failure in igt reload test
  drm/amdgpu: only allow secure submission on rings which support that
  drm/amdgpu: fixed the warnings reported by kernel test robot
  drm/amd/display: 3.2.177
  drm/amd/display: [FW Promotion] Release 0.0.108.0
  drm/amd/display: Add save/restore PANEL_PWRSEQ_REF_DIV2
  drm/amd/display: Wait for hubp read line for Pollock
  ...

1 files changed, 66 insertions, 24 deletions

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index ed43b987d306..d265a73313c9 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -373,7 +373,7 @@ static void drm_fb_helper_resume_worker(struct work_struct *work)
 
 static void drm_fb_helper_damage_blit_real(struct drm_fb_helper *fb_helper,
 					   struct drm_clip_rect *clip,
-					   struct dma_buf_map *dst)
+					   struct iosys_map *dst)
 {
 	struct drm_framebuffer *fb = fb_helper->fb;
 	unsigned int cpp = fb->format->cpp[0];
@@ -382,11 +382,11 @@ static void drm_fb_helper_damage_blit_real(struct drm_fb_helper *fb_helper,
 	size_t len = (clip->x2 - clip->x1) * cpp;
 	unsigned int y;
 
-	dma_buf_map_incr(dst, offset); /* go to first pixel within clip rect */
+	iosys_map_incr(dst, offset); /* go to first pixel within clip rect */
 
 	for (y = clip->y1; y < clip->y2; y++) {
-		dma_buf_map_memcpy_to(dst, src, len);
-		dma_buf_map_incr(dst, fb->pitches[0]);
+		iosys_map_memcpy_to(dst, 0, src, len);
+		iosys_map_incr(dst, fb->pitches[0]);
 		src += fb->pitches[0];
 	}
 }
@@ -395,7 +395,7 @@ static int drm_fb_helper_damage_blit(struct drm_fb_helper *fb_helper,
 				     struct drm_clip_rect *clip)
 {
 	struct drm_client_buffer *buffer = fb_helper->buffer;
-	struct dma_buf_map map, dst;
+	struct iosys_map map, dst;
 	int ret;
 
 	/*
@@ -680,6 +680,31 @@ static void drm_fb_helper_damage(struct fb_info *info, u32 x, u32 y,
 	schedule_work(&helper->damage_work);
 }
 
+/* Convert memory region into area of scanlines and pixels per scanline */
+static void drm_fb_helper_memory_range_to_clip(struct fb_info *info, off_t off, size_t len,
+					       struct drm_rect *clip)
+{
+	off_t end = off + len;
+	u32 x1 = 0;
+	u32 y1 = off / info->fix.line_length;
+	u32 x2 = info->var.xres;
+	u32 y2 = DIV_ROUND_UP(end, info->fix.line_length);
+
+	if ((y2 - y1) == 1) {
+		/*
+		 * We've only written to a single scanline. Try to reduce
+		 * the number of horizontal pixels that need an update.
+		 */
+		off_t bit_off = (off % info->fix.line_length) * 8;
+		off_t bit_end = (end % info->fix.line_length) * 8;
+
+		x1 = bit_off / info->var.bits_per_pixel;
+		x2 = DIV_ROUND_UP(bit_end, info->var.bits_per_pixel);
+	}
+
+	drm_rect_init(clip, x1, y1, x2 - x1, y2 - y1);
+}
+
 /**
  * drm_fb_helper_deferred_io() - fbdev deferred_io callback function
  * @info: fb_info struct pointer
@@ -693,23 +718,23 @@ void drm_fb_helper_deferred_io(struct fb_info *info,
 {
 	unsigned long start, end, min, max;
 	struct page *page;
-	u32 y1, y2;
+	struct drm_rect damage_area;
 
 	min = ULONG_MAX;
 	max = 0;
 	list_for_each_entry(page, pagelist, lru) {
 		start = page->index << PAGE_SHIFT;
-		end = start + PAGE_SIZE - 1;
+		end = start + PAGE_SIZE;
 		min = min(min, start);
 		max = max(max, end);
 	}
+	if (min >= max)
+		return;
 
-	if (min < max) {
-		y1 = min / info->fix.line_length;
-		y2 = min_t(u32, DIV_ROUND_UP(max, info->fix.line_length),
-			   info->var.yres);
-		drm_fb_helper_damage(info, 0, y1, info->var.xres, y2 - y1);
-	}
+	drm_fb_helper_memory_range_to_clip(info, min, max - min, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
 }
 EXPORT_SYMBOL(drm_fb_helper_deferred_io);
 
@@ -741,11 +766,18 @@ EXPORT_SYMBOL(drm_fb_helper_sys_read);
 ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
 				size_t count, loff_t *ppos)
 {
+	loff_t pos = *ppos;
 	ssize_t ret;
+	struct drm_rect damage_area;
 
 	ret = fb_sys_write(info, buf, count, ppos);
-	if (ret > 0)
-		drm_fb_helper_damage(info, 0, 0, info->var.xres, info->var.yres);
+	if (ret <= 0)
+		return ret;
+
+	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
 
 	return ret;
 }
@@ -2224,6 +2256,7 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
 	loff_t pos = *ppos;
 	size_t total_size;
 	ssize_t ret;
+	struct drm_rect damage_area;
 	int err = 0;
 
 	if (info->screen_size)
@@ -2252,13 +2285,19 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf,
 	else
 		ret = fb_write_screen_buffer(info, buf, count, pos);
 
-	if (ret > 0)
-		*ppos += ret;
+	if (ret < 0)
+		return ret; /* return last error, if any */
+	else if (!ret)
+		return err; /* return previous error, if any */
 
-	if (ret > 0)
-		drm_fb_helper_damage(info, 0, 0, info->var.xres_virtual, info->var.yres_virtual);
+	*ppos += ret;
 
-	return ret ? ret : err;
+	drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area);
+	drm_fb_helper_damage(info, damage_area.x1, damage_area.y1,
+			     drm_rect_width(&damage_area),
+			     drm_rect_height(&damage_area));
+
+	return ret;
 }
 
 static void drm_fbdev_fb_fillrect(struct fb_info *info,
@@ -2322,7 +2361,7 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 	struct drm_framebuffer *fb;
 	struct fb_info *fbi;
 	u32 format;
-	struct dma_buf_map map;
+	struct iosys_map map;
 	int ret;
 
 	drm_dbg_kms(dev, "surface width(%d), height(%d) and bpp(%d)\n",
@@ -2346,6 +2385,7 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 	fbi->fbops = &drm_fbdev_fb_ops;
 	fbi->screen_size = sizes->surface_height * fb->pitches[0];
 	fbi->fix.smem_len = fbi->screen_size;
+	fbi->flags = FBINFO_DEFAULT;
 
 	drm_fb_helper_fill_info(fbi, fb_helper, sizes);
 
@@ -2353,19 +2393,21 @@ static int drm_fb_helper_generic_probe(struct drm_fb_helper *fb_helper,
 		fbi->screen_buffer = vzalloc(fbi->screen_size);
 		if (!fbi->screen_buffer)
 			return -ENOMEM;
+		fbi->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
 
 		fbi->fbdefio = &drm_fbdev_defio;
-
 		fb_deferred_io_init(fbi);
 	} else {
 		/* buffer is mapped for HW framebuffer */
 		ret = drm_client_buffer_vmap(fb_helper->buffer, &map);
 		if (ret)
 			return ret;
-		if (map.is_iomem)
+		if (map.is_iomem) {
 			fbi->screen_base = map.vaddr_iomem;
-		else
+		} else {
 			fbi->screen_buffer = map.vaddr;
+			fbi->flags |= FBINFO_VIRTFB;
+		}
 
 		/*
 		 * Shamelessly leak the physical address to user-space. As