drm/i915: Remove the module parameter 'fastboot'

By default fastboot is enabled on all Display 9+ platforms and disabled
on older platforms. Its not necessary to retain this as a module
parameter.
Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926091157.635438-1-arun.r.murthy@intel.com

drivers/gpu/drm/i915/display/intel_display.c

@@ -4988,9 +4988,6 @@ pipe_config_mismatch(bool fastset, const struct intel_crtc *crtc,
 
 static bool fastboot_enabled(struct drm_i915_private *dev_priv)
 {
-	if (dev_priv->params.fastboot != -1)
-		return dev_priv->params.fastboot;
-
 	/* Enable fastboot by default on Skylake and newer */
 	if (DISPLAY_VER(dev_priv) >= 9)
 		return true;

drivers/gpu/drm/i915/i915_params.c

@@ -137,11 +137,6 @@ i915_param_named_unsafe(enable_ips, int, 0400, "Enable IPS (default: true)");
 i915_param_named_unsafe(enable_dpt, bool, 0400,
 	"Enable display page table (DPT) (default: true)");
 
-i915_param_named(fastboot, int, 0400,
-	"Try to skip unnecessary mode sets at boot time "
-	"(0=disabled, 1=enabled) "
-	"Default: -1 (use per-chip default)");
-
 i915_param_named_unsafe(load_detect_test, bool, 0400,
 	"Force-enable the VGA load detect code for testing (default:false). "
 	"For developers only.");

drivers/gpu/drm/i915/i915_params.h

@@ -72,7 +72,6 @@ struct drm_printer;
 	param(int, edp_vswing, 0, 0400) \
 	param(unsigned int, reset, 3, 0600) \
 	param(unsigned int, inject_probe_failure, 0, 0) \
-	param(int, fastboot, -1, 0600) \
 	param(int, enable_dpcd_backlight, -1, 0600) \
 	param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
 	param(unsigned int, request_timeout_ms, CONFIG_DRM_I915_REQUEST_TIMEOUT, CONFIG_DRM_I915_REQUEST_TIMEOUT ? 0600 : 0) \