From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Jan200101 Date: Sat, 30 Mar 2024 19:20:48 +0100 Subject: [PATCH] drm/i915: add kernel parameter to disable async page flipping Signed-off-by: Jan200101 --- drivers/gpu/drm/i915/display/intel_display_driver.c | 2 +- drivers/gpu/drm/i915/i915_params.c | 4 ++++ drivers/gpu/drm/i915/i915_params.h | 3 ++- drivers/gpu/drm/xe/xe_device_types.h | 1 + 4 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c index 9df9097a0255..24c084420441 100644 --- a/drivers/gpu/drm/i915/display/intel_display_driver.c +++ b/drivers/gpu/drm/i915/display/intel_display_driver.c @@ -125,7 +125,7 @@ static void intel_mode_config_init(struct drm_i915_private *i915) mode_config->funcs = &intel_mode_funcs; mode_config->helper_private = &intel_mode_config_funcs; - mode_config->async_page_flip = HAS_ASYNC_FLIPS(i915); + mode_config->async_page_flip = HAS_ASYNC_FLIPS(i915) && !i915->params.disable_async_page_flip; /* * Maximum framebuffer dimensions, chosen to match diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index de43048543e8..2c6fe740609e 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -134,6 +134,10 @@ i915_param_named_unsafe(lmem_size, uint, 0400, i915_param_named_unsafe(lmem_bar_size, uint, 0400, "Set the lmem bar size(in MiB)."); +i915_param_named_unsafe(disable_async_page_flip, bool, 0400, + "Disable async page flipping" + "(0=disabled [default], 1=enabled)"); + static void _param_print_bool(struct drm_printer *p, const char *name, bool val) { diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h index 1315d7fac850..53d47b1ef79e 100644 --- a/drivers/gpu/drm/i915/i915_params.h +++ b/drivers/gpu/drm/i915/i915_params.h @@ -64,7 +64,8 @@ struct drm_printer; /* leave bools at the end to not create holes */ \ param(bool, enable_hangcheck, true, 0600) \ param(bool, error_capture, true, IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) ? 0600 : 0) \ - param(bool, enable_gvt, false, IS_ENABLED(CONFIG_DRM_I915_GVT) ? 0400 : 0) + param(bool, enable_gvt, false, IS_ENABLED(CONFIG_DRM_I915_GVT) ? 0400 : 0) \ + param(bool, disable_async_page_flip, false, 0400) #define MEMBER(T, member, ...) T member; struct i915_params { diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index e8491979a6f2..4682970746c3 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -516,6 +516,9 @@ unsigned int czclk_freq; unsigned int fsb_freq, mem_freq, is_ddr3; }; + struct { + bool disable_async_page_flip; + } params; void *pxp; #endif