| Message ID | 20190827191026.26175-7-animesh.manna@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | DSB enablement. | expand |
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c index 520f2bbcc8ae..d36ee8244427 100644 --- a/drivers/gpu/drm/i915/display/intel_dsb.c +++ b/drivers/gpu/drm/i915/display/intel_dsb.c @@ -24,6 +24,15 @@ #define DSB_BYTE_EN (0xf << 20) #define DSB_REG_VALUE_MASK 0xfffff +static inline bool is_dsb_busy(struct intel_dsb *dsb) +{ + struct intel_crtc *crtc = dsb->crtc; + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + enum pipe pipe = crtc->pipe; + + return DSB_STATUS & I915_READ(DSB_CTRL(pipe, dsb->id)); +} + struct intel_dsb * intel_dsb_get(struct intel_crtc *crtc) {
As per bspec check for DSB status before programming any of its register. Inline function added to check the dsb status. Cc: Michel Thierry <michel.thierry@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Animesh Manna <animesh.manna@intel.com> --- drivers/gpu/drm/i915/display/intel_dsb.c | 9 +++++++++ 1 file changed, 9 insertions(+)