Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "Highlights:

   - Intel xe enable Panthor Lake, started adding WildCat Lake

   - amdgpu has a bunch of reset improvments along with the usual IP
     updates

   - msm got VM_BIND support which is important for vulkan sparse memory

   - more drm_panic users

   - gpusvm common code to handle a bunch of core SVM work outside
     drivers.

  Detail summary:

  Changes outside drm subdirectory:
   - 'shrink_shmem_memory()' for better shmem/hibernate interaction
   - Rust support infrastructure:
      - make ETIMEDOUT available
      - add size constants up to SZ_2G
      - add DMA coherent allocation bindings
   - mtd driver for Intel GPU non-volatile storage
   - i2c designware quirk for Intel xe

  core:
   - atomic helpers: tune enable/disable sequences
   - add task info to wedge API
   - refactor EDID quirks
   - connector: move HDR sink to drm_display_info
   - fourcc: half-float and 32-bit float formats
   - mode_config: pass format info to simplify

  dma-buf:
   - heaps: Give CMA heap a stable name

  ci:
   - add device tree validation and kunit

  displayport:
   - change AUX DPCD access probe address
   - add quirk for DPCD probe
   - add panel replay definitions
   - backlight control helpers

  fbdev:
   - make CONFIG_FIRMWARE_EDID available on all arches

  fence:
   - fix UAF issues

  format-helper:
   - improve tests

  gpusvm:
   - introduce devmem only flag for allocation
   - add timeslicing support to GPU SVM

  ttm:
   - improve eviction

  sched:
   - tracing improvements
   - kunit improvements
   - memory leak fixes
   - reset handling improvements

  color mgmt:
   - add hardware gamma LUT handling helpers

  bridge:
   - add destroy hook
   - switch to reference counted drm_bridge allocations
   - tc358767: convert to devm_drm_bridge_alloc
   - improve CEC handling

  panel:
   - switch to reference counter drm_panel allocations
   - fwnode panel lookup
   - Huiling hl055fhv028c support
   - Raspberry Pi 7" 720x1280 support
   - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK
   - simple: AUO P238HAN01
   - st7701: Winstar wf40eswaa6mnn0
   - visionox: rm69299-shift
   - Renesas R61307, Renesas R69328 support
   - DJN HX83112B

  hdmi:
   - add CEC handling
   - YUV420 output support

  xe:
   - WildCat Lake support
   - Enable PanthorLake by default
   - mark BMG as SRIOV capable
   - update firmware recommendations
   - Expose media OA units
   - aux-bux support for non-volatile memory
   - MTD intel-dg driver for non-volatile memory
   - Expose fan control and voltage regulator in sysfs
   - restructure migration for multi-device
   - Restore GuC submit UAF fix
   - make GEM shrinker drm managed
   - SRIOV VF Post-migration recovery of GGTT nodes
   - W/A additions/reworks
   - Prefetch support for svm ranges
   - Don't allocate managed BO for each policy change
   - HWMON fixes for BMG
   - Create LRC BO without VM
   - PCI ID updates
   - make SLPC debugfs files optional
   - rework eviction rejection of bound external BOs
   - consolidate PAT programming logic for pre/post Xe2
   - init changes for flicker-free boot
   - Enable GuC Dynamic Inhibit Context switch

  i915:
   - drm_panic support for i915/xe
   - initial flip queue off by default for LNL/PNL
   - Wildcat Lake Display support
   - Support for DSC fractional link bpp
   - Support for simultaneous Panel Replay and Adaptive sync
   - Support for PTL+ double buffer LUT
   - initial PIPEDMC event handling
   - drm_panel_follower support
   - DPLL interface renames
   - allocate struct intel_display dynamically
   - flip queue preperation
   - abstract DRAM detection better
   - avoid GuC scheduling stalls
   - remove DG1 force probe requirement
   - fix MEI interrupt handler on RT kernels
   - use backlight control helpers for eDP
   - more shared display code refactoring

  amdgpu:
   - add userq slot to INFO ioctl
   - SR-IOV hibernation support
   - Suspend improvements
   - Backlight improvements
   - Use scaling for non-native eDP modes
   - cleaner shader updates for GC 9.x
   - Remove fence slab
   - SDMA fw checks for userq support
   - RAS updates
   - DMCUB updates
   - DP tunneling fixes
   - Display idle D3 support
   - Per queue reset improvements
   - initial smartmux support

  amdkfd:
   - enable KFD on loongarch
   - mtype fix for ext coherent system memory

  radeon:
   - CS validation additional GL extensions
   - drop console lock during suspend/resume
   - bump driver version

  msm:
   - VM BIND support
   - CI: infrastructure updates
   - UBWC single source of truth
   - decouple GPU and KMS support
   - DP: rework I/O accessors
   - DPU: SM8750 support
   - DSI: SM8750 support
   - GPU: X1-45 support and speedbin support for X1-85
   - MDSS: SM8750 support

  nova:
   - register! macro improvements
   - DMA object abstraction
   - VBIOS parser + fwsec lookup
   - sysmem flush page support
   - falcon: generic falcon boot code and HAL
   - FWSEC-FRTS: fb setup and load/execute

  ivpu:
   - Add Wildcat Lake support
   - Add turbo flag

  ast:
   - improve hardware generations implementation

  imx:
   - IMX8qxq Display Controller support

  lima:
   - Rockchip RK3528 GPU support

  nouveau:
   - fence handling cleanup

  panfrost:
   - MT8370 support
   - bo labeling
   - 64-bit register access

  qaic:
   - add RAS support

  rockchip:
   - convert inno_hdmi to a bridge

  rz-du:
   - add RZ/V2H(P) support
   - MIPI-DSI DCS support

  sitronix:
   - ST7567 support

  sun4i:
   - add H616 support

  tidss:
   - add TI AM62L support
   - AM65x OLDI bridge support

  bochs:
   - drm panic support

  vkms:
   - YUV and R* format support
   - use faux device

  vmwgfx:
   - fence improvements

  hyperv:
   - move out of simple
   - add drm_panic support"

* tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits)
  drm/tidss: oldi: convert to devm_drm_bridge_alloc() API
  drm/tidss: encoder: convert to devm_drm_bridge_alloc()
  drm/amdgpu: move reset support type checks into the caller
  drm/amdgpu/sdma7: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma6: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset
  drm/amdgpu/sdma5: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx12: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx11: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx10: re-emit unprocessed state on ring reset
  drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset
  drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset
  drm/amdgpu: Add WARN_ON to the resource clear function
  drm/amd/pm: Use cached metrics data on SMUv13.0.6
  drm/amd/pm: Use cached data for min/max clocks
  gpu: nova-core: fix bounds check in PmuLookupTableEntry::new
  drm/amdgpu: Replace HQD terminology with slots naming
  drm/amdgpu: Add user queue instance count in HW IP info
  drm/amd/amdgpu: Add helper functions for isp buffers
  drm/amd/amdgpu: Initialize swnode for ISP MFD device
  ...

1 files changed, 42 insertions, 27 deletions

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 031980d8f3ab..b4e8edc7c767 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -33,6 +33,7 @@
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_color_mgmt.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_format_helper.h>
@@ -70,31 +71,44 @@ static unsigned long ast_fb_vram_size(struct ast_device *ast)
 	return cursor_offset - offset;
 }
 
-static inline void ast_load_palette_index(struct ast_device *ast,
-				     u8 index, u8 red, u8 green,
-				     u8 blue)
+static void ast_set_gamma_lut(struct drm_crtc *crtc, unsigned int index,
+			      u16 red, u16 green, u16 blue)
 {
-	ast_io_write8(ast, AST_IO_VGADWR, index);
+	struct drm_device *dev = crtc->dev;
+	struct ast_device *ast = to_ast_device(dev);
+	u8 i8 = index & 0xff;
+	u8 r8 = red >> 8;
+	u8 g8 = green >> 8;
+	u8 b8 = blue >> 8;
+
+	if (drm_WARN_ON_ONCE(dev, index != i8))
+		return; /* driver bug */
+
+	ast_io_write8(ast, AST_IO_VGADWR, i8);
 	ast_io_read8(ast, AST_IO_VGASRI);
-	ast_io_write8(ast, AST_IO_VGAPDR, red);
+	ast_io_write8(ast, AST_IO_VGAPDR, r8);
 	ast_io_read8(ast, AST_IO_VGASRI);
-	ast_io_write8(ast, AST_IO_VGAPDR, green);
+	ast_io_write8(ast, AST_IO_VGAPDR, g8);
 	ast_io_read8(ast, AST_IO_VGASRI);
-	ast_io_write8(ast, AST_IO_VGAPDR, blue);
+	ast_io_write8(ast, AST_IO_VGAPDR, b8);
 	ast_io_read8(ast, AST_IO_VGASRI);
 }
 
-static void ast_crtc_set_gamma_linear(struct ast_device *ast,
-				      const struct drm_format_info *format)
+static void ast_crtc_fill_gamma(struct ast_device *ast,
+				const struct drm_format_info *format)
 {
-	int i;
+	struct drm_crtc *crtc = &ast->crtc;
 
 	switch (format->format) {
-	case DRM_FORMAT_C8: /* In this case, gamma table is used as color palette */
+	case DRM_FORMAT_C8:
+		/* gamma table is used as color palette */
+		drm_crtc_fill_palette_8(crtc, ast_set_gamma_lut);
+		break;
 	case DRM_FORMAT_RGB565:
+		/* also uses 8-bit gamma ramp on low-color modes */
+		fallthrough;
 	case DRM_FORMAT_XRGB8888:
-		for (i = 0; i < AST_LUT_SIZE; i++)
-			ast_load_palette_index(ast, i, i, i, i);
+		drm_crtc_fill_gamma_888(crtc, ast_set_gamma_lut);
 		break;
 	default:
 		drm_warn_once(&ast->base, "Unsupported format %p4cc for gamma correction\n",
@@ -103,21 +117,22 @@ static void ast_crtc_set_gamma_linear(struct ast_device *ast,
 	}
 }
 
-static void ast_crtc_set_gamma(struct ast_device *ast,
-			       const struct drm_format_info *format,
-			       struct drm_color_lut *lut)
+static void ast_crtc_load_gamma(struct ast_device *ast,
+				const struct drm_format_info *format,
+				struct drm_color_lut *lut)
 {
-	int i;
+	struct drm_crtc *crtc = &ast->crtc;
 
 	switch (format->format) {
-	case DRM_FORMAT_C8: /* In this case, gamma table is used as color palette */
+	case DRM_FORMAT_C8:
+		/* gamma table is used as color palette */
+		drm_crtc_load_palette_8(crtc, lut, ast_set_gamma_lut);
+		break;
 	case DRM_FORMAT_RGB565:
+		/* also uses 8-bit gamma ramp on low-color modes */
+		fallthrough;
 	case DRM_FORMAT_XRGB8888:
-		for (i = 0; i < AST_LUT_SIZE; i++)
-			ast_load_palette_index(ast, i,
-					       lut[i].red >> 8,
-					       lut[i].green >> 8,
-					       lut[i].blue >> 8);
+		drm_crtc_load_gamma_888(crtc, lut, ast_set_gamma_lut);
 		break;
 	default:
 		drm_warn_once(&ast->base, "Unsupported format %p4cc for gamma correction\n",
@@ -810,11 +825,11 @@ ast_crtc_helper_atomic_flush(struct drm_crtc *crtc,
 	 */
 	if (crtc_state->enable && crtc_state->color_mgmt_changed) {
 		if (crtc_state->gamma_lut)
-			ast_crtc_set_gamma(ast,
-					   ast_crtc_state->format,
-					   crtc_state->gamma_lut->data);
+			ast_crtc_load_gamma(ast,
+					    ast_crtc_state->format,
+					    crtc_state->gamma_lut->data);
 		else
-			ast_crtc_set_gamma_linear(ast, ast_crtc_state->format);
+			ast_crtc_fill_gamma(ast, ast_crtc_state->format);
 	}
 }