This feature should be disabled by default until properly tested and
mature. Add a module parameter to enable the feature for testing,
while keeping it disabled by default for now.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display_params.c | 5 +++++
drivers/gpu/drm/i915/display/intel_display_params.h | 1 +
drivers/gpu/drm/i915/display/intel_dmc_wl.c | 6 ++++--
3 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_params.c b/drivers/gpu/drm/i915/display/intel_display_params.c
index 11e03cfb774d..f40b223cc8a1 100644
--- a/drivers/gpu/drm/i915/display/intel_display_params.c
+++ b/drivers/gpu/drm/i915/display/intel_display_params.c
@@ -116,6 +116,11 @@ intel_display_param_named_unsafe(enable_psr2_sel_fetch, bool, 0400,
"(0=disabled, 1=enabled) "
"Default: 1");
+intel_display_param_named_unsafe(enable_dmc_wl, bool, 0400,
+ "Enable DMC wakelock "
+ "(0=disabled, 1=enabled) "
+ "Default: 0");
+
__maybe_unused
static void _param_print_bool(struct drm_printer *p, const char *driver_name,
const char *name, bool val)
diff --git a/drivers/gpu/drm/i915/display/intel_display_params.h b/drivers/gpu/drm/i915/display/intel_display_params.h
index 6206cc51df04..bf8dbbdb20a1 100644
--- a/drivers/gpu/drm/i915/display/intel_display_params.h
+++ b/drivers/gpu/drm/i915/display/intel_display_params.h
@@ -46,6 +46,7 @@ struct drm_i915_private;
param(int, enable_psr, -1, 0600) \
param(bool, psr_safest_params, false, 0400) \
param(bool, enable_psr2_sel_fetch, true, 0400) \
+ param(bool, enable_dmc_wl, false, 0400) \
#define MEMBER(T, member, ...) T member;
struct intel_display_params {
diff --git a/drivers/gpu/drm/i915/display/intel_dmc_wl.c b/drivers/gpu/drm/i915/display/intel_dmc_wl.c
index bc3f3d6dfe10..30f8905fae41 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc_wl.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc_wl.c
@@ -109,7 +109,8 @@ static bool intel_dmc_wl_check_range(u32 address)
static bool __intel_dmc_wl_supported(struct drm_i915_private *i915)
{
if (DISPLAY_VER(i915) < 20 ||
- !intel_dmc_has_payload(i915))
+ !intel_dmc_has_payload(i915) ||
+ !i915->display.params.enable_dmc_wl)
return false;
return true;
@@ -120,7 +121,8 @@ void intel_dmc_wl_init(struct drm_i915_private *i915)
struct intel_dmc_wl *wl = &i915->display.wl;
/* don't call __intel_dmc_wl_supported(), DMC is not loaded yet */
- if (DISPLAY_VER(i915) < 20)
+ if (DISPLAY_VER(i915) < 20 ||
+ !i915->display.params.enable_dmc_wl)
return;
INIT_DELAYED_WORK(&wl->work, intel_dmc_wl_work);
--
2.39.2
