[Intel-gfx] [PATCH 2/2] drm/i915: provide module parameter description

[Ben Widawsky]

Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_drv.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index f5ef954..feac0f9 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -39,39 +39,62 @@
 
 static int i915_modeset __read_mostly = -1;
 module_param_named(modeset, i915_modeset, int, 0400);
+MODULE_PARM_DESC(modeset, "Use kernel modesetting (KMS) "
+			  "(0=use DRM_I915_KMS from .config, "
+			  "1=on, "
+			  "-1=force vga console preference (default))");
 
 unsigned int i915_fbpercrtc __always_unused = 0;
 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
 
 int i915_panel_ignore_lid __read_mostly = 0;
 module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600);
+MODULE_PARM_DESC(panel_ignore_lid, "Override lid status "
+				   "(0=autodetect (default), 1=lid open, -1=lid closed)");
 
 unsigned int i915_powersave __read_mostly = 1;
 module_param_named(powersave, i915_powersave, int, 0600);
+MODULE_PARM_DESC(powersave, "Enable powersavings, fbc, downclocking, etc. "
+			    "(default: true)");
 
 unsigned int i915_semaphores __read_mostly = 0;
 module_param_named(semaphores, i915_semaphores, int, 0600);
+MODULE_PARM_DESC(semaphores, "Use semaphores for inter-ring synchronization "
+			     "(default: false)");
 
 unsigned int i915_enable_rc6 __read_mostly = 1;
 module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0600);
+MODULE_PARM_DESC(i915_enable_rc6, "Enable power-saving render C-state 6 "
+				  "(default: true)");
 
 unsigned int i915_enable_fbc __read_mostly = 0;
 module_param_named(i915_enable_fbc, i915_enable_fbc, int, 0600);
+MODULE_PARM_DESC(i915_enable_fbc, "Enable frame buffer compression for power savings "
+				  "(default: false)");
 
 unsigned int i915_lvds_downclock __read_mostly = 0;
 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
+MODULE_PARM_DESC(lvds_downclock, "Use panel (LVDS/eDP) downclocking for "
+				 "power savings (default: false)");
 
 unsigned int i915_panel_use_ssc __read_mostly = 1;
 module_param_named(lvds_use_ssc, i915_panel_use_ssc, int, 0600);
+MODULE_PARM_DESC(lvds_use_ssc, "Use Spread Spectrum Clock with panels "
+			       "(LVDS/eDP) (default: true)");
 
 int i915_vbt_sdvo_panel_type __read_mostly = -1;
 module_param_named(vbt_sdvo_panel_type, i915_vbt_sdvo_panel_type, int, 0600);
+MODULE_PARM_DESC(vbt_sdvo_panel_type, "Override selection of SDVO panel mode "
+				      "in the VBT (default: auto)");
 
 static bool i915_try_reset __read_mostly = true;
 module_param_named(reset, i915_try_reset, bool, 0600);
+MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
 
 bool i915_enable_hangcheck __read_mostly = true;
 module_param_named(enable_hangcheck, i915_enable_hangcheck, bool, 0644);
+MODULE_PARM_DESC(enable_hangcheck, "Periodically check GPU activity for "
+				   "detecting hangs (default: true)");
 
 static struct drm_driver driver;
 extern int intel_agp_enabled;
-- 
1.7.6