102 	u32 fbc_ctl;  in i8xx_fbc_deactivate()  local
105 	fbc_ctl = I915_READ(FBC_CONTROL);  in i8xx_fbc_deactivate()
106 	if ((fbc_ctl & FBC_CTL_EN) == 0)  in i8xx_fbc_deactivate()
109 	fbc_ctl &= ~FBC_CTL_EN;  in i8xx_fbc_deactivate()
110 	I915_WRITE(FBC_CONTROL, fbc_ctl);  in i8xx_fbc_deactivate()
125 	u32 fbc_ctl;  in i8xx_fbc_activate()  local
153 	fbc_ctl = I915_READ(FBC_CONTROL);  in i8xx_fbc_activate()
154 	fbc_ctl &= 0x3fff << FBC_CTL_INTERVAL_SHIFT;  in i8xx_fbc_activate()
155 	fbc_ctl |= FBC_CTL_EN | FBC_CTL_PERIODIC;  in i8xx_fbc_activate()
157 		fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */  in i8xx_fbc_activate()
158 	fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;  in i8xx_fbc_activate()
159 	fbc_ctl |= params->vma->fence->id;  in i8xx_fbc_activate()
160 	I915_WRITE(FBC_CONTROL, fbc_ctl);  in i8xx_fbc_activate()