Merge tag 'drm-next-2022-01-07' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights are support for privacy screens found in new laptops, a
  bunch of nomodeset refactoring, and i915 enables ADL-P systems by
  default, while starting to add RPL-S support.

  vmwgfx adds GEM and support for OpenGL 4.3 features in userspace.

  Lots of internal refactorings around dma reservations, and lots of
  driver refactoring as well.

  Summary:

  core:
   - add privacy screen support
   - move nomodeset option into drm subsystem
   - clean up nomodeset handling in drivers
   - make drm_irq.c legacy
   - fix stack_depot name conflicts
   - remove DMA_BUF_SET_NAME ioctl restrictions
   - sysfs: send hotplug event
   - replace several DRM_* logging macros with drm_*
   - move hashtable to legacy code
   - add error return from gem_create_object
   - cma-helper: improve interfaces, drop CONFIG_DRM_KMS_CMA_HELPER
   - kernel.h related include cleanups
   - support XRGB2101010 source buffers

  ttm:
   - don't include drm hashtable
   - stop pruning fences after wait
   - documentation updates

  dma-buf:
   - add dma_resv selftest
   - add debugfs helpers
   - remove dma_resv_get_excl_unlocked
   - documentation
   - make fences mandatory in dma_resv_add_excl_fence

  dp:
   - add link training delay helpers

  gem:
   - link shmem/cma helpers into separate modules
   - use dma_resv iteratior
   - import dma-buf namespace into gem helper modules

  scheduler:
   - fence grab fix
   - lockdep fixes

  bridge:
   - switch to managed MIPI DSI helpers
   - register and attach during probe fixes
   - convert to YAML in several places.

  panel:
   - add bunch of new panesl

  simpledrm:
   - support FB_DAMAGE_CLIPS
   - support virtual screen sizes
   - add Apple M1 support

  amdgpu:
   - enable seamless boot for DCN 3.01
   - runtime PM fixes
   - use drm_kms_helper_connector_hotplug_event
   - get all fences at once
   - use generic drm fb helpers
   - PSR/DPCD/LTTPR/DSC/PM/RAS/OLED/SRIOV fixes
   - add smart trace buffer (STB) for supported GPUs
   - display debugfs entries
   - new SMU debug option
   - Documentation update

  amdkfd:
   - IP discovery enumeration refactor
   - interface between driver fixes
   - SVM fixes
   - kfd uapi header to define some sysfs bitfields.

  i915:
   - support VESA panel backlights
   - enable ADL-P by default
   - add eDP privacy screen support
   - add Raptor Lake S (RPL-S) support
   - DG2 page table support
   - lots of GuC/HuC fw refactoring
   - refactored i915->gt interfaces
   - CD clock squashing support
   - enable 10-bit gamma support
   - update ADL-P DMC fw to v2.14
   - enable runtime PM autosuspend by default
   - ADL-P DSI support
   - per-lane DP drive settings for ICL+
   - add support for pipe C/D DMC firmware
   - Atomic gamma LUT updates
   - remove CCS FB stride restrictions on ADL-P
   - VRR platform support for display 11
   - add support for display audio codec keepalive
   - lots of display refactoring
   - fix runtime PM handling during PXP suspend
   - improved eviction performance with async TTM moves
   - async VMA unbinding improvements
   - VMA locking refactoring
   - improved error capture robustness
   - use per device iommu checks
   - drop bits stealing from i915_sw_fence function ptr
   - remove dma_resv_prune
   - add IC cache invalidation on DG2

  nouveau:
   - crc fixes
   - validate LUTs in atomic check
   - set HDMI AVI RGB quant to full

  tegra:
   - buffer objects reworks for dma-buf compat
   - NVDEC driver uAPI support
   - power management improvements

  etnaviv:
   - IOMMU enabled system support
   - fix > 4GB command buffer mapping
   - close a DoS vector
   - fix spurious GPU resets

  ast:
   - fix i2c initialization

  rcar-du:
   - DSI output support

  exynos:
   - replace legacy gpio interface
   - implement generic GEM object mmap

  msm:
   - dpu plane state cleanup in prep for multirect
   - dpu debugfs cleanups
   - dp support for sc7280
   - a506 support
   - removal of struct_mutex
   - remove old eDP sub-driver

  anx7625:
   - support MIPI DSI input
   - support HDMI audio
   - fix reading EDID

  lvds:
   - fix bridge DT bindings

  megachips:
   - probe both bridges before registering

  dw-hdmi:
   - allow interlace on bridge

  ps8640:
   - enable runtime PM
   - support aux-bus

  tx358768:
   - enable reference clock
   - add pulse mode support

  ti-sn65dsi86:
   - use regmap bulk write
   - add PWM support

  etnaviv:
   - get all fences at once

  gma500:
   - gem object cleanups

  kmb:
   - enable fb console

  radeon:
   - use dma_resv_wait_timeout

  rockchip:
   - add DSP hold timeout
   - suspend/resume fixes
   - PLL clock fixes
   - implement mmap in GEM object functions
   - use generic fbdev emulation

  sun4i:
   - use CMA helpers without vmap support

  vc4:
   - fix HDMI-CEC hang with display is off
   - power on HDMI controller while disabling
   - support 4K@60Hz modes
   - support 10-bit YUV 4:2:0 output

  vmwgfx:
   - fix leak on probe errors
   - fail probing on broken hosts
   - new placement for MOB page tables
   - hide internal BOs from userspace
   - implement GEM support
   - implement GL 4.3 support

  virtio:
   - overflow fixes

  xen:
   - implement mmap as GEM object function

  omapdrm:
   - fix scatterlist export
   - support virtual planes

  mediatek:
   - MT8192 support
   - CMDQ refinement"

* tag 'drm-next-2022-01-07' of git://anongit.freedesktop.org/drm/drm: (1241 commits)
  drm/amdgpu: no DC support for headless chips
  drm/amd/display: fix dereference before NULL check
  drm/amdgpu: always reset the asic in suspend (v2)
  drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform
  drm/amd/display: Fix the uninitialized variable in enable_stream_features()
  drm/amdgpu: fix runpm documentation
  amdgpu/pm: Make sysfs pm attributes as read-only for VFs
  drm/amdgpu: save error count in RAS poison handler
  drm/amdgpu: drop redundant semicolon
  drm/amd/display: get and restore link res map
  drm/amd/display: support dynamic HPO DP link encoder allocation
  drm/amd/display: access hpo dp link encoder only through link resource
  drm/amd/display: populate link res in both detection and validation
  drm/amd/display: define link res and make it accessible to all link interfaces
  drm/amd/display: 3.2.167
  drm/amd/display: [FW Promotion] Release 0.0.98
  drm/amd/display: Undo ODM combine
  drm/amd/display: Add reg defs for DCN303
  drm/amd/display: Changed pipe split policy to allow for multi-display pipe split
  drm/amd/display: Set optimize_pwr_state for DCN31
  ...

1 files changed, 47 insertions, 6 deletions

diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c
index 606c78a2b988..ff8fce36d2aa 100644
--- a/drivers/gpu/drm/tegra/rgb.c
+++ b/drivers/gpu/drm/tegra/rgb.c
@@ -17,6 +17,8 @@ struct tegra_rgb {
 	struct tegra_output output;
 	struct tegra_dc *dc;
 
+	struct clk *pll_d_out0;
+	struct clk *pll_d2_out0;
 	struct clk *clk_parent;
 	struct clk *clk;
 };
@@ -116,13 +118,21 @@ static void tegra_rgb_encoder_enable(struct drm_encoder *encoder)
 		DISP_ORDER_RED_BLUE;
 	tegra_dc_writel(rgb->dc, value, DC_DISP_DISP_INTERFACE_CONTROL);
 
-	/* XXX: parameterize? */
-	value = SC0_H_QUALIFIER_NONE | SC1_H_QUALIFIER_NONE;
-	tegra_dc_writel(rgb->dc, value, DC_DISP_SHIFT_CLOCK_OPTIONS);
-
 	tegra_dc_commit(rgb->dc);
 }
 
+static bool tegra_rgb_pll_rate_change_allowed(struct tegra_rgb *rgb)
+{
+	if (!rgb->pll_d2_out0)
+		return false;
+
+	if (!clk_is_match(rgb->clk_parent, rgb->pll_d_out0) &&
+	    !clk_is_match(rgb->clk_parent, rgb->pll_d2_out0))
+		return false;
+
+	return true;
+}
+
 static int
 tegra_rgb_encoder_atomic_check(struct drm_encoder *encoder,
 			       struct drm_crtc_state *crtc_state,
@@ -151,8 +161,17 @@ tegra_rgb_encoder_atomic_check(struct drm_encoder *encoder,
 	 * and hope that the desired frequency can be matched (or at least
 	 * matched sufficiently close that the panel will still work).
 	 */
-	div = ((clk_get_rate(rgb->clk) * 2) / pclk) - 2;
-	pclk = 0;
+	if (tegra_rgb_pll_rate_change_allowed(rgb)) {
+		/*
+		 * Set display controller clock to x2 of PCLK in order to
+		 * produce higher resolution pulse positions.
+		 */
+		div = 2;
+		pclk *= 2;
+	} else {
+		div = ((clk_get_rate(rgb->clk) * 2) / pclk) - 2;
+		pclk = 0;
+	}
 
 	err = tegra_dc_state_setup_clock(dc, crtc_state, rgb->clk_parent,
 					 pclk, div);
@@ -210,6 +229,22 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
 		return err;
 	}
 
+	rgb->pll_d_out0 = clk_get_sys(NULL, "pll_d_out0");
+	if (IS_ERR(rgb->pll_d_out0)) {
+		err = PTR_ERR(rgb->pll_d_out0);
+		dev_err(dc->dev, "failed to get pll_d_out0: %d\n", err);
+		return err;
+	}
+
+	if (dc->soc->has_pll_d2_out0) {
+		rgb->pll_d2_out0 = clk_get_sys(NULL, "pll_d2_out0");
+		if (IS_ERR(rgb->pll_d2_out0)) {
+			err = PTR_ERR(rgb->pll_d2_out0);
+			dev_err(dc->dev, "failed to get pll_d2_out0: %d\n", err);
+			return err;
+		}
+	}
+
 	dc->rgb = &rgb->output;
 
 	return 0;
@@ -217,9 +252,15 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
 
 int tegra_dc_rgb_remove(struct tegra_dc *dc)
 {
+	struct tegra_rgb *rgb;
+
 	if (!dc->rgb)
 		return 0;
 
+	rgb = to_rgb(dc->rgb);
+	clk_put(rgb->pll_d2_out0);
+	clk_put(rgb->pll_d_out0);
+
 	tegra_output_remove(dc->rgb);
 	dc->rgb = NULL;