7  * DOC: VC4 HVS module.
9  * The Hardware Video Scaler (HVS) is the piece of hardware that does
16  * There is a single global HVS, with multiple output FIFOs that can
18  * the HVS, while the vc4_crtc.c code actually drives HVS setup for
70 	struct drm_printer p = drm_info_printer(&vc4->hvs->pdev->dev);  in vc4_hvs_dump_state()
73 	drm_print_regset32(&p, &vc4->hvs->regset);  in vc4_hvs_dump_state()
75 	DRM_INFO("HVS ctx:\n");  in vc4_hvs_dump_state()
79 			 readl((u32 __iomem *)vc4->hvs->dlist + i + 0),  in vc4_hvs_dump_state()
80 			 readl((u32 __iomem *)vc4->hvs->dlist + i + 1),  in vc4_hvs_dump_state()
81 			 readl((u32 __iomem *)vc4->hvs->dlist + i + 2),  in vc4_hvs_dump_state()
82 			 readl((u32 __iomem *)vc4->hvs->dlist + i + 3));  in vc4_hvs_dump_state()
132 static int vc4_hvs_upload_linear_kernel(struct vc4_hvs *hvs,  in vc4_hvs_upload_linear_kernel()  argument
139 	ret = drm_mm_insert_node(&hvs->dlist_mm, space, VC4_KERNEL_DWORDS);  in vc4_hvs_upload_linear_kernel()
146 	dst_kernel = hvs->dlist + space->start;  in vc4_hvs_upload_linear_kernel()
168 	/* The LUT memory is laid out with each HVS channel in order,  in vc4_hvs_lut_load()
206 	if (!vc4->hvs->hvs5)  in vc4_hvs_get_fifo_from_output()
273 	if (!vc4->hvs->hvs5)  in vc4_hvs_init_channel()
294 		  ((!vc4->hvs->hvs5) ? SCALER_DISPBKGND_GAMMA : 0) |  in vc4_hvs_init_channel()
352 	spin_lock_irqsave(&vc4->hvs->mm_lock, flags);  in vc4_hvs_atomic_check()
353 	ret = drm_mm_insert_node(&vc4->hvs->dlist_mm, &vc4_state->mm,  in vc4_hvs_atomic_check()
355 	spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);  in vc4_hvs_atomic_check()
426 	u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;  in vc4_hvs_atomic_flush()
430 		DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));  in vc4_hvs_atomic_flush()
493 		DRM_INFO("CRTC %d HVS after:\n", drm_crtc_index(crtc));  in vc4_hvs_atomic_flush()
525 	DRM_DEV_ERROR(dev->dev, "HVS underrun\n");  in vc4_hvs_report_underrun()
564 	struct vc4_hvs *hvs = NULL;  in vc4_hvs_bind()  local
569 	hvs = devm_kzalloc(&pdev->dev, sizeof(*hvs), GFP_KERNEL);  in vc4_hvs_bind()
570 	if (!hvs)  in vc4_hvs_bind()
573 	hvs->pdev = pdev;  in vc4_hvs_bind()
575 	if (of_device_is_compatible(pdev->dev.of_node, "brcm,bcm2711-hvs"))  in vc4_hvs_bind()
576 		hvs->hvs5 = true;  in vc4_hvs_bind()
578 	hvs->regs = vc4_ioremap_regs(pdev, 0);  in vc4_hvs_bind()
579 	if (IS_ERR(hvs->regs))  in vc4_hvs_bind()
580 		return PTR_ERR(hvs->regs);  in vc4_hvs_bind()
582 	hvs->regset.base = hvs->regs;  in vc4_hvs_bind()
583 	hvs->regset.regs = hvs_regs;  in vc4_hvs_bind()
584 	hvs->regset.nregs = ARRAY_SIZE(hvs_regs);  in vc4_hvs_bind()
586 	if (hvs->hvs5) {  in vc4_hvs_bind()
587 		hvs->core_clk = devm_clk_get(&pdev->dev, NULL);  in vc4_hvs_bind()
588 		if (IS_ERR(hvs->core_clk)) {  in vc4_hvs_bind()
590 			return PTR_ERR(hvs->core_clk);  in vc4_hvs_bind()
593 		ret = clk_prepare_enable(hvs->core_clk);  in vc4_hvs_bind()
600 	if (!hvs->hvs5)  in vc4_hvs_bind()
601 		hvs->dlist = hvs->regs + SCALER_DLIST_START;  in vc4_hvs_bind()
603 		hvs->dlist = hvs->regs + SCALER5_DLIST_START;  in vc4_hvs_bind()
605 	spin_lock_init(&hvs->mm_lock);  in vc4_hvs_bind()
607 	/* Set up the HVS display list memory manager.  We never  in vc4_hvs_bind()
612 	drm_mm_init(&hvs->dlist_mm,  in vc4_hvs_bind()
616 	/* Set up the HVS LBM memory manager.  We could have some more  in vc4_hvs_bind()
621 	if (!hvs->hvs5)  in vc4_hvs_bind()
623 		drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);  in vc4_hvs_bind()
626 		drm_mm_init(&hvs->lbm_mm, 0, 60 * 1024);  in vc4_hvs_bind()
631 	ret = vc4_hvs_upload_linear_kernel(hvs,  in vc4_hvs_bind()
632 					   &hvs->mitchell_netravali_filter,  in vc4_hvs_bind()
637 	vc4->hvs = hvs;  in vc4_hvs_bind()
694 			       vc4_hvs_irq_handler, 0, "vc4 hvs", drm);  in vc4_hvs_bind()
698 	vc4_debugfs_add_regset32(drm, "hvs_regs", &hvs->regset);  in vc4_hvs_bind()
710 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_unbind()  local
712 	if (drm_mm_node_allocated(&vc4->hvs->mitchell_netravali_filter))  in vc4_hvs_unbind()
713 		drm_mm_remove_node(&vc4->hvs->mitchell_netravali_filter);  in vc4_hvs_unbind()
715 	drm_mm_takedown(&vc4->hvs->dlist_mm);  in vc4_hvs_unbind()
716 	drm_mm_takedown(&vc4->hvs->lbm_mm);  in vc4_hvs_unbind()
718 	clk_disable_unprepare(hvs->core_clk);  in vc4_hvs_unbind()
720 	vc4->hvs = NULL;  in vc4_hvs_unbind()
740 	{ .compatible = "brcm,bcm2711-hvs" },
741 	{ .compatible = "brcm,bcm2835-hvs" },