drm/i915: add enable_ips module option
IPS is still enabled by default. Feature requested by the power
management team.
This should also help testing the feature on some early pre-production
hardware where there were relationship problems between IPS and PSR.
v2: Rebase on top of the newest IPS implementation.
v3: Check i915_enable_ips at compute_config, not supports_ips, so the
kernel parameter will be ignored at haswell_get_pipe_config.
Requested-by: Kristen Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index a4e8f16..b23cd63 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -128,6 +128,10 @@
MODULE_PARM_DESC(disable_power_well,
"Disable the power well when possible (default: false)");
+int i915_enable_ips __read_mostly = 1;
+module_param_named(enable_ips, i915_enable_ips, int, 0600);
+MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
+
static struct drm_driver driver;
extern int intel_agp_enabled;