drm/i915: Extend private i915_param_named macro with description

We're always specifying description of each module param in
separate macro. Let's combine description into our main macro.
Started with Coccinelle, followed by minor cleanup.

@match1@
declarer name MODULE_PARM_DESC;
identifier n;
constant c;
@@
(
-	MODULE_PARM_DESC(n, c);
)

@fix1 depends on match1@
declarer name i915_param_named;
declarer name i915_param_named_unsafe;
identifier match1.n;
constant match1.c;
@@
(
	i915_param_named(n, ...
+	, c
	);
|
	i915_param_named_unsafe(n, ...
+	, c
	);
)
Suggested-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170914150805.28376-4-michal.wajdeczko@intel.com

drivers/gpu/drm/i915/i915_params.c

@@ -25,10 +25,12 @@
 #include "i915_params.h"
 #include "i915_drv.h"
 
-#define i915_param_named(name, T, perm) \
-	module_param_named(name, i915.name, T, perm)
-#define i915_param_named_unsafe(name, T, perm) \
-	module_param_named_unsafe(name, i915.name, T, perm)
+#define i915_param_named(name, T, perm, desc) \
+	module_param_named(name, i915.name, T, perm); \
+	MODULE_PARM_DESC(name, desc)
+#define i915_param_named_unsafe(name, T, perm, desc) \
+	module_param_named_unsafe(name, i915.name, T, perm); \
+	MODULE_PARM_DESC(name, desc)
 
 struct i915_params i915 __read_mostly = {
 	.modeset = -1,
@@ -72,193 +74,158 @@ struct i915_params i915 __read_mostly = {
 	.enable_gvt = false,
 };
 
-i915_param_named(modeset, int, 0400);
-MODULE_PARM_DESC(modeset,
+i915_param_named(modeset, int, 0400,
 	"Use kernel modesetting [KMS] (0=disable, "
 	"1=on, -1=force vga console preference [default])");
 
-i915_param_named_unsafe(panel_ignore_lid, int, 0600);
-MODULE_PARM_DESC(panel_ignore_lid,
+i915_param_named_unsafe(panel_ignore_lid, int, 0600,
 	"Override lid status (0=autodetect, 1=autodetect disabled [default], "
 	"-1=force lid closed, -2=force lid open)");
 
-i915_param_named_unsafe(semaphores, int, 0400);
-MODULE_PARM_DESC(semaphores,
+i915_param_named_unsafe(semaphores, int, 0400,
 	"Use semaphores for inter-ring sync "
 	"(default: -1 (use per-chip defaults))");
 
-i915_param_named_unsafe(enable_rc6, int, 0400);
-MODULE_PARM_DESC(enable_rc6,
+i915_param_named_unsafe(enable_rc6, int, 0400,
 	"Enable power-saving render C-state 6. "
 	"Different stages can be selected via bitmask values "
 	"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
 	"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
 	"default: -1 (use per-chip default)");
 
-i915_param_named_unsafe(enable_dc, int, 0400);
-MODULE_PARM_DESC(enable_dc,
+i915_param_named_unsafe(enable_dc, int, 0400,
 	"Enable power-saving display C-states. "
 	"(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
 
-i915_param_named_unsafe(enable_fbc, int, 0600);
-MODULE_PARM_DESC(enable_fbc,
+i915_param_named_unsafe(enable_fbc, int, 0600,
 	"Enable frame buffer compression for power savings "
 	"(default: -1 (use per-chip default))");
 
-i915_param_named_unsafe(lvds_channel_mode, int, 0400);
-MODULE_PARM_DESC(lvds_channel_mode,
+i915_param_named_unsafe(lvds_channel_mode, int, 0400,
 	 "Specify LVDS channel mode "
 	 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
 
-i915_param_named_unsafe(panel_use_ssc, int, 0600);
-MODULE_PARM_DESC(panel_use_ssc,
+i915_param_named_unsafe(panel_use_ssc, int, 0600,
 	"Use Spread Spectrum Clock with panels [LVDS/eDP] "
 	"(default: auto from VBT)");
 
-i915_param_named_unsafe(vbt_sdvo_panel_type, int, 0400);
-MODULE_PARM_DESC(vbt_sdvo_panel_type,
+i915_param_named_unsafe(vbt_sdvo_panel_type, int, 0400,
 	"Override/Ignore selection of SDVO panel mode in the VBT "
 	"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
 
-i915_param_named_unsafe(reset, int, 0600);
-MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
+i915_param_named_unsafe(reset, int, 0600,
+	"Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
 
-i915_param_named_unsafe(vbt_firmware, charp, 0400);
-MODULE_PARM_DESC(vbt_firmware,
-		 "Load VBT from specified file under /lib/firmware");
+i915_param_named_unsafe(vbt_firmware, charp, 0400,
+	"Load VBT from specified file under /lib/firmware");
 
 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
-i915_param_named(error_capture, bool, 0600);
-MODULE_PARM_DESC(error_capture,
+i915_param_named(error_capture, bool, 0600,
 	"Record the GPU state following a hang. "
 	"This information in /sys/class/drm/card<N>/error is vital for "
 	"triaging and debugging hangs.");
 #endif
 
-i915_param_named_unsafe(enable_hangcheck, bool, 0644);
-MODULE_PARM_DESC(enable_hangcheck,
+i915_param_named_unsafe(enable_hangcheck, bool, 0644,
 	"Periodically check GPU activity for detecting hangs. "
 	"WARNING: Disabling this can cause system wide hangs. "
 	"(default: true)");
 
-i915_param_named_unsafe(enable_ppgtt, int, 0400);
-MODULE_PARM_DESC(enable_ppgtt,
+i915_param_named_unsafe(enable_ppgtt, int, 0400,
 	"Override PPGTT usage. "
 	"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
 
-i915_param_named_unsafe(enable_execlists, int, 0400);
-MODULE_PARM_DESC(enable_execlists,
+i915_param_named_unsafe(enable_execlists, int, 0400,
 	"Override execlists usage. "
 	"(-1=auto [default], 0=disabled, 1=enabled)");
 
-i915_param_named_unsafe(enable_psr, int, 0600);
-MODULE_PARM_DESC(enable_psr, "Enable PSR "
-		 "(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
-		 "Default: -1 (use per-chip default)");
+i915_param_named_unsafe(enable_psr, int, 0600,
+	"Enable PSR "
+	"(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
+	"Default: -1 (use per-chip default)");
 
-i915_param_named_unsafe(alpha_support, bool, 0400);
-MODULE_PARM_DESC(alpha_support,
+i915_param_named_unsafe(alpha_support, bool, 0400,
 	"Enable alpha quality driver support for latest hardware. "
 	"See also CONFIG_DRM_I915_ALPHA_SUPPORT.");
 
-i915_param_named_unsafe(disable_power_well, int, 0400);
-MODULE_PARM_DESC(disable_power_well,
+i915_param_named_unsafe(disable_power_well, int, 0400,
 	"Disable display power wells when possible "
 	"(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");
 
-i915_param_named_unsafe(enable_ips, int, 0600);
-MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
+i915_param_named_unsafe(enable_ips, int, 0600, "Enable IPS (default: true)");
 
-i915_param_named(fastboot, bool, 0600);
-MODULE_PARM_DESC(fastboot,
+i915_param_named(fastboot, bool, 0600,
 	"Try to skip unnecessary mode sets at boot time (default: false)");
 
-i915_param_named_unsafe(prefault_disable, bool, 0600);
-MODULE_PARM_DESC(prefault_disable,
+i915_param_named_unsafe(prefault_disable, bool, 0600,
 	"Disable page prefaulting for pread/pwrite/reloc (default:false). "
 	"For developers only.");
 
-i915_param_named_unsafe(load_detect_test, bool, 0600);
-MODULE_PARM_DESC(load_detect_test,
+i915_param_named_unsafe(load_detect_test, bool, 0600,
 	"Force-enable the VGA load detect code for testing (default:false). "
 	"For developers only.");
 
-i915_param_named_unsafe(force_reset_modeset_test, bool, 0600);
-MODULE_PARM_DESC(force_reset_modeset_test,
+i915_param_named_unsafe(force_reset_modeset_test, bool, 0600,
 	"Force a modeset during gpu reset for testing (default:false). "
 	"For developers only.");
 
-i915_param_named_unsafe(invert_brightness, int, 0600);
-MODULE_PARM_DESC(invert_brightness,
+i915_param_named_unsafe(invert_brightness, int, 0600,
 	"Invert backlight brightness "
 	"(-1 force normal, 0 machine defaults, 1 force inversion), please "
 	"report PCI device ID, subsystem vendor and subsystem device ID "
 	"to dri-devel@lists.freedesktop.org, if your machine needs it. "
 	"It will then be included in an upcoming module version.");
 
-i915_param_named(disable_display, bool, 0400);
-MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
+i915_param_named(disable_display, bool, 0400,
+	"Disable display (default: false)");
 
-i915_param_named_unsafe(enable_cmd_parser, bool, 0400);
-MODULE_PARM_DESC(enable_cmd_parser,
-		 "Enable command parsing (true=enabled [default], false=disabled)");
+i915_param_named_unsafe(enable_cmd_parser, bool, 0400,
+	"Enable command parsing (true=enabled [default], false=disabled)");
 
-i915_param_named_unsafe(use_mmio_flip, int, 0600);
-MODULE_PARM_DESC(use_mmio_flip,
-		 "use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
+i915_param_named_unsafe(use_mmio_flip, int, 0600,
+	"use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
 
-i915_param_named(mmio_debug, int, 0600);
-MODULE_PARM_DESC(mmio_debug,
+i915_param_named(mmio_debug, int, 0600,
 	"Enable the MMIO debug code for the first N failures (default: off). "
 	"This may negatively affect performance.");
 
-i915_param_named(verbose_state_checks, bool, 0600);
-MODULE_PARM_DESC(verbose_state_checks,
+i915_param_named(verbose_state_checks, bool, 0600,
 	"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
 
-i915_param_named_unsafe(nuclear_pageflip, bool, 0400);
-MODULE_PARM_DESC(nuclear_pageflip,
-		 "Force enable atomic functionality on platforms that don't have full support yet.");
+i915_param_named_unsafe(nuclear_pageflip, bool, 0400,
+	"Force enable atomic functionality on platforms that don't have full support yet.");
 
 /* WA to get away with the default setting in VBT for early platforms.Will be removed */
-i915_param_named_unsafe(edp_vswing, int, 0400);
-MODULE_PARM_DESC(edp_vswing,
-		 "Ignore/Override vswing pre-emph table selection from VBT "
-		 "(0=use value from vbt [default], 1=low power swing(200mV),"
-		 "2=default swing(400mV))");
-
-i915_param_named_unsafe(enable_guc_loading, int, 0400);
-MODULE_PARM_DESC(enable_guc_loading,
-		"Enable GuC firmware loading "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
-
-i915_param_named_unsafe(enable_guc_submission, int, 0400);
-MODULE_PARM_DESC(enable_guc_submission,
-		"Enable GuC submission "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
-
-i915_param_named(guc_log_level, int, 0400);
-MODULE_PARM_DESC(guc_log_level,
+i915_param_named_unsafe(edp_vswing, int, 0400,
+	"Ignore/Override vswing pre-emph table selection from VBT "
+	"(0=use value from vbt [default], 1=low power swing(200mV),"
+	"2=default swing(400mV))");
+
+i915_param_named_unsafe(enable_guc_loading, int, 0400,
+	"Enable GuC firmware loading "
+	"(-1=auto, 0=never [default], 1=if available, 2=required)");
+
+i915_param_named_unsafe(enable_guc_submission, int, 0400,
+	"Enable GuC submission "
+	"(-1=auto, 0=never [default], 1=if available, 2=required)");
+
+i915_param_named(guc_log_level, int, 0400,
 	"GuC firmware logging level (-1:disabled (default), 0-3:enabled)");
 
-i915_param_named_unsafe(guc_firmware_path, charp, 0400);
-MODULE_PARM_DESC(guc_firmware_path,
+i915_param_named_unsafe(guc_firmware_path, charp, 0400,
 	"GuC firmware path to use instead of the default one");
 
-i915_param_named_unsafe(huc_firmware_path, charp, 0400);
-MODULE_PARM_DESC(huc_firmware_path,
+i915_param_named_unsafe(huc_firmware_path, charp, 0400,
 	"HuC firmware path to use instead of the default one");
 
-i915_param_named_unsafe(enable_dp_mst, bool, 0600);
-MODULE_PARM_DESC(enable_dp_mst,
+i915_param_named_unsafe(enable_dp_mst, bool, 0600,
 	"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
-i915_param_named_unsafe(inject_load_failure, uint, 0400);
-MODULE_PARM_DESC(inject_load_failure,
+
+i915_param_named_unsafe(inject_load_failure, uint, 0400,
 	"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
-i915_param_named(enable_dpcd_backlight, bool, 0600);
-MODULE_PARM_DESC(enable_dpcd_backlight,
+
+i915_param_named(enable_dpcd_backlight, bool, 0600,
 	"Enable support for DPCD backlight control (default:false)");
 
-i915_param_named(enable_gvt, bool, 0400);
-MODULE_PARM_DESC(enable_gvt,
+i915_param_named(enable_gvt, bool, 0400,
 	"Enable support for Intel GVT-g graphics virtualization host support(default:false)");