drm/i915: Enable Engine reset and recovery support

This feature is made available only from Gen8, for previous gen devices
driver uses legacy full gpu reset.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170615201828.23144-10-michel.thierry@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170620095751.13127-10-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 045cadb772851fc3587fb90b147986870b2747b6..14e2c2e57f96a53f2fdddd8ecf897c3d28a4ddce 100644 (file)
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -46,7 +46,7 @@ struct i915_params i915 __read_mostly = {
        .prefault_disable = 0,
        .load_detect_test = 0,
        .force_reset_modeset_test = 0,
-       .reset = 1,
+       .reset = 2,
        .error_capture = true,
        .invert_brightness = 0,
        .disable_display = 0,
@@ -116,7 +116,7 @@ MODULE_PARM_DESC(vbt_sdvo_panel_type,
        "(-2=ignore, -1=auto [default], index in VBT BIOS table)");
 
 module_param_named_unsafe(reset, i915.reset, int, 0600);
-MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset [default], 2=engine reset)");
+MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
 
 #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
 module_param_named(error_capture, i915.error_capture, bool, 0600);