drm/i915/display: Move enable_sagv module parameter under display

Move enable_sagv module parameter under display and change the parameter
permissions to non-writblase (0400)

v2: Change permissions to 0400
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231024124109.384973-12-jouni.hogander@intel.com

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

@@ -50,6 +50,9 @@ intel_display_param_named_unsafe(enable_dc, int, 0400,
 intel_display_param_named_unsafe(enable_dpt, bool, 0400,
 	"Enable display page table (DPT) (default: true)");
 
+intel_display_param_named_unsafe(enable_sagv, bool, 0400,
+	"Enable system agent voltage/frequency scaling (SAGV) (default: true)");
+
 intel_display_param_named_unsafe(enable_fbc, int, 0400,
 	"Enable frame buffer compression for power savings "
 	"(default: -1 (use per-chip default))");

drivers/gpu/drm/i915/display/intel_display_params.h

@@ -30,6 +30,7 @@ struct drm_i915_private;
 	param(int, vbt_sdvo_panel_type, -1, 0400) \
 	param(int, enable_dc, -1, 0400) \
 	param(bool, enable_dpt, true, 0400) \
+	param(bool, enable_sagv, true, 0600) \
 	param(int, enable_fbc, -1, 0600) \
 	param(int, enable_psr, -1, 0600) \
 	param(bool, psr_safest_params, false, 0400) \

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

@@ -412,7 +412,7 @@ static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
 
-	if (!i915->params.enable_sagv)
+	if (!i915->display.params.enable_sagv)
 		return false;
 
 	if (DISPLAY_VER(i915) >= 12)
@@ -3702,7 +3702,8 @@ static int intel_sagv_status_show(struct seq_file *m, void *unused)
 	};
 
 	seq_printf(m, "SAGV available: %s\n", str_yes_no(intel_has_sagv(i915)));
-	seq_printf(m, "SAGV modparam: %s\n", str_enabled_disabled(i915->params.enable_sagv));
+	seq_printf(m, "SAGV modparam: %s\n",
+		   str_enabled_disabled(i915->display.params.enable_sagv));
 	seq_printf(m, "SAGV status: %s\n", sagv_status[i915->display.sagv.status]);
 	seq_printf(m, "SAGV block time: %d usec\n", i915->display.sagv.block_time_us);
 

drivers/gpu/drm/i915/i915_params.c

@@ -82,9 +82,6 @@ i915_param_named_unsafe(enable_hangcheck, bool, 0400,
 	"WARNING: Disabling this can cause system wide hangs. "
 	"(default: true)");
 
-i915_param_named_unsafe(enable_sagv, bool, 0600,
-	"Enable system agent voltage/frequency scaling (SAGV) (default: true)");
-
 i915_param_named_unsafe(force_probe, charp, 0400,
 	"Force probe options for specified supported devices. "
 	"See CONFIG_DRM_I915_FORCE_PROBE for details.");

drivers/gpu/drm/i915/i915_params.h

@@ -47,7 +47,6 @@ struct drm_printer;
  */
 #define I915_PARAMS_FOR_EACH(param) \
 	param(int, modeset, -1, 0400) \
-	param(bool, enable_sagv, true, 0600) \
 	param(int, disable_power_well, -1, 0400) \
 	param(int, enable_ips, 1, 0600) \
 	param(int, invert_brightness, 0, 0600) \