diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 6e03e115ea1f440137bd8506d377e9e888048e6f..ce3bd0c713b9add0df8d560746b5bc3bdd1e5d2f 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1726,7 +1726,7 @@ static int __init i915_init(void) * to the atomic ioctl and the atomic properties. Only plane operations on * a single CRTC will actually work. */ - if (driver.driver_features & DRIVER_MODESET) + if (i915.nuclear_pageflip) driver.driver_features |= DRIVER_ATOMIC; return drm_pci_init(&driver, &i915_pci_driver); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 705f208b49a04b9417191d8d7ac158bd450420fc..7cd15556fc09ba54eb18228b0103784035c0d6ef 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2640,6 +2640,7 @@ struct i915_params { int use_mmio_flip; int mmio_debug; bool verbose_state_checks; + bool nuclear_pageflip; int edp_vswing; }; extern struct i915_params i915 __read_mostly; diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index 5ae4b0aba56412e3c7d8560c5fe1d1484ae00675..05053e2e9ff0fb48eefcd007274c06959ab925d0 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -51,6 +51,7 @@ struct i915_params i915 __read_mostly = { .use_mmio_flip = 0, .mmio_debug = 0, .verbose_state_checks = 1, + .nuclear_pageflip = 0, .edp_vswing = 0, .enable_guc_submission = false, .guc_log_level = -1, @@ -177,6 +178,10 @@ module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600); MODULE_PARM_DESC(verbose_state_checks, "Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions."); +module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0600); +MODULE_PARM_DESC(nuclear_pageflip, + "Force atomic modeset functionality; asynchronous mode is not yet supported. (default: false)."); + /* WA to get away with the default setting in VBT for early platforms.Will be removed */ module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400); MODULE_PARM_DESC(edp_vswing,