From: Hans de Goede <hdegoede@xxxxxxxxxx>
We really want to have fastboot enabled by default to avoid an ugly
modeset during boot.
Rather then enabling it everywhere, lets start with enabling it on
Skylake and newer.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_params.c | 6 ++++--
drivers/gpu/drm/i915/i915_params.h | 2 +-
drivers/gpu/drm/i915/intel_display.c | 11 ++++++++++-
3 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 9f0539bdaa39..b5be0abbba35 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -97,8 +97,10 @@ i915_param_named_unsafe(disable_power_well, int, 0400,
i915_param_named_unsafe(enable_ips, int, 0600, "Enable IPS (default: true)");
-i915_param_named(fastboot, bool, 0600,
- "Try to skip unnecessary mode sets at boot time (default: false)");
+i915_param_named(fastboot, int, 0600,
+ "Try to skip unnecessary mode sets at boot time "
+ "(0=disabled, 1=enabled) "
+ "Default: -1 (use per-chip default)");
i915_param_named_unsafe(prefault_disable, bool, 0600,
"Disable page prefaulting for pread/pwrite/reloc (default:false). "
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index 6efcf330bdab..3f14e9881a0d 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -63,10 +63,10 @@ struct drm_printer;
param(int, edp_vswing, 0) \
param(int, reset, 2) \
param(unsigned int, inject_load_failure, 0) \
+ param(int, fastboot, -1) \
/* leave bools at the end to not create holes */ \
param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
param(bool, enable_hangcheck, true) \
- param(bool, fastboot, false) \
param(bool, prefault_disable, false) \
param(bool, load_detect_test, false) \
param(bool, force_reset_modeset_test, false) \
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 36c1126cbc85..097e46819d3a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11690,6 +11690,15 @@ pipe_config_err(bool adjust, const char *name, const char *format, ...)
va_end(args);
}
+static bool fastboot_enabled(struct drm_i915_private *dev_priv)
+{
+ if (i915_modparams.fastboot != -1)
+ return i915_modparams.fastboot;
+
+ /* Enable fastboot by default on Skylake and newer */
+ return INTEL_GEN(dev_priv) >= 9;
+}
+
static bool
intel_pipe_config_compare(struct drm_i915_private *dev_priv,
struct intel_crtc_state *current_config,
@@ -11701,7 +11710,7 @@ intel_pipe_config_compare(struct drm_i915_private *dev_priv,
(current_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED) &&
!(pipe_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED);
- if (fixup_inherited && !i915_modparams.fastboot) {
+ if (fixup_inherited && !fastboot_enabled(dev_priv)) {
DRM_DEBUG_KMS("initial modeset and fastboot not set\n");
ret = false;
}
--
2.20.1
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