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
68 void vc4_hvs_dump_state(struct vc4_hvs *hvs)  in vc4_hvs_dump_state()  argument
70 	struct drm_device *drm = &hvs->vc4->base;  in vc4_hvs_dump_state()
71 	struct drm_printer p = drm_info_printer(&hvs->pdev->dev);  in vc4_hvs_dump_state()
77 	drm_print_regset32(&p, &hvs->regset);  in vc4_hvs_dump_state()
79 	DRM_INFO("HVS ctx:\n");  in vc4_hvs_dump_state()
83 			 readl((u32 __iomem *)hvs->dlist + i + 0),  in vc4_hvs_dump_state()
84 			 readl((u32 __iomem *)hvs->dlist + i + 1),  in vc4_hvs_dump_state()
85 			 readl((u32 __iomem *)hvs->dlist + i + 2),  in vc4_hvs_dump_state()
86 			 readl((u32 __iomem *)hvs->dlist + i + 3));  in vc4_hvs_dump_state()
109 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_debugfs_dlist()  local
120 			drm_printf(&p, "HVS chan %u disabled\n", i);  in vc4_hvs_debugfs_dlist()
124 		drm_printf(&p, "HVS chan %u:\n", i);  in vc4_hvs_debugfs_dlist()
127 			dlist_word = readl((u32 __iomem *)vc4->hvs->dlist + j);  in vc4_hvs_debugfs_dlist()
178 static int vc4_hvs_upload_linear_kernel(struct vc4_hvs *hvs,  in vc4_hvs_upload_linear_kernel()  argument
190 	ret = drm_mm_insert_node(&hvs->dlist_mm, space, VC4_KERNEL_DWORDS);  in vc4_hvs_upload_linear_kernel()
197 	dst_kernel = hvs->dlist + space->start;  in vc4_hvs_upload_linear_kernel()
211 static void vc4_hvs_lut_load(struct vc4_hvs *hvs,  in vc4_hvs_lut_load()  argument
214 	struct drm_device *drm = &hvs->vc4->base;  in vc4_hvs_lut_load()
223 	/* The LUT memory is laid out with each HVS channel in order,  in vc4_hvs_lut_load()
241 static void vc4_hvs_update_gamma_lut(struct vc4_hvs *hvs,  in vc4_hvs_update_gamma_lut()  argument
255 	vc4_hvs_lut_load(hvs, vc4_crtc);  in vc4_hvs_update_gamma_lut()
258 u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo)  in vc4_hvs_get_fifo_frame_count()  argument
260 	struct drm_device *drm = &hvs->vc4->base;  in vc4_hvs_get_fifo_frame_count()
286 int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output)  in vc4_hvs_get_fifo_from_output()  argument
288 	struct vc4_dev *vc4 = hvs->vc4;  in vc4_hvs_get_fifo_from_output()
345 static int vc4_hvs_init_channel(struct vc4_hvs *hvs, struct drm_crtc *crtc,  in vc4_hvs_init_channel()  argument
348 	struct vc4_dev *vc4 = hvs->vc4;  in vc4_hvs_init_channel()
399 	vc4_hvs_lut_load(hvs, vc4_crtc);  in vc4_hvs_init_channel()
406 void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int chan)  in vc4_hvs_stop_channel()  argument
408 	struct drm_device *drm = &hvs->vc4->base;  in vc4_hvs_stop_channel()
460 	spin_lock_irqsave(&vc4->hvs->mm_lock, flags);  in vc4_hvs_atomic_check()
461 	ret = drm_mm_insert_node(&vc4->hvs->dlist_mm, &vc4_state->mm,  in vc4_hvs_atomic_check()
463 	spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);  in vc4_hvs_atomic_check()
474 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_install_dlist()  local
537 	vc4_hvs_init_channel(vc4->hvs, crtc, mode, oneshot);  in vc4_hvs_atomic_enable()
549 	vc4_hvs_stop_channel(vc4->hvs, chan);  in vc4_hvs_atomic_disable()
559 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_atomic_flush()  local
567 	u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;  in vc4_hvs_atomic_flush()
577 		DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));  in vc4_hvs_atomic_flush()
578 		vc4_hvs_dump_state(hvs);  in vc4_hvs_atomic_flush()
629 			vc4_hvs_update_gamma_lut(hvs, vc4_crtc);  in vc4_hvs_atomic_flush()
642 		DRM_INFO("CRTC %d HVS after:\n", drm_crtc_index(crtc));  in vc4_hvs_atomic_flush()
643 		vc4_hvs_dump_state(hvs);  in vc4_hvs_atomic_flush()
649 void vc4_hvs_mask_underrun(struct vc4_hvs *hvs, int channel)  in vc4_hvs_mask_underrun()  argument
651 	struct drm_device *drm = &hvs->vc4->base;  in vc4_hvs_mask_underrun()
666 void vc4_hvs_unmask_underrun(struct vc4_hvs *hvs, int channel)  in vc4_hvs_unmask_underrun()  argument
668 	struct drm_device *drm = &hvs->vc4->base;  in vc4_hvs_unmask_underrun()
690 	DRM_DEV_ERROR(dev->dev, "HVS underrun\n");  in vc4_hvs_report_underrun()
697 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_irq_handler()  local
721 			vc4_hvs_mask_underrun(hvs, channel);  in vc4_hvs_irq_handler()
740 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_debugfs_init()  local
743 	if (!vc4->hvs)  in vc4_hvs_debugfs_init()
762 				       &hvs->regset);  in vc4_hvs_debugfs_init()
774 	struct vc4_hvs *hvs = NULL;  in vc4_hvs_bind()  local
779 	hvs = drmm_kzalloc(drm, sizeof(*hvs), GFP_KERNEL);  in vc4_hvs_bind()
780 	if (!hvs)  in vc4_hvs_bind()
782 	hvs->vc4 = vc4;  in vc4_hvs_bind()
783 	hvs->pdev = pdev;  in vc4_hvs_bind()
785 	hvs->regs = vc4_ioremap_regs(pdev, 0);  in vc4_hvs_bind()
786 	if (IS_ERR(hvs->regs))  in vc4_hvs_bind()
787 		return PTR_ERR(hvs->regs);  in vc4_hvs_bind()
789 	hvs->regset.base = hvs->regs;  in vc4_hvs_bind()
790 	hvs->regset.regs = hvs_regs;  in vc4_hvs_bind()
791 	hvs->regset.nregs = ARRAY_SIZE(hvs_regs);  in vc4_hvs_bind()
794 		hvs->core_clk = devm_clk_get(&pdev->dev, NULL);  in vc4_hvs_bind()
795 		if (IS_ERR(hvs->core_clk)) {  in vc4_hvs_bind()
797 			return PTR_ERR(hvs->core_clk);  in vc4_hvs_bind()
800 		ret = clk_prepare_enable(hvs->core_clk);  in vc4_hvs_bind()
808 		hvs->dlist = hvs->regs + SCALER_DLIST_START;  in vc4_hvs_bind()
810 		hvs->dlist = hvs->regs + SCALER5_DLIST_START;  in vc4_hvs_bind()
812 	spin_lock_init(&hvs->mm_lock);  in vc4_hvs_bind()
814 	/* Set up the HVS display list memory manager.  We never  in vc4_hvs_bind()
819 	drm_mm_init(&hvs->dlist_mm,  in vc4_hvs_bind()
823 	/* Set up the HVS LBM memory manager.  We could have some more  in vc4_hvs_bind()
830 		drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);  in vc4_hvs_bind()
833 		drm_mm_init(&hvs->lbm_mm, 0, 60 * 1024);  in vc4_hvs_bind()
838 	ret = vc4_hvs_upload_linear_kernel(hvs,  in vc4_hvs_bind()
839 					   &hvs->mitchell_netravali_filter,  in vc4_hvs_bind()
844 	vc4->hvs = hvs;  in vc4_hvs_bind()
890 			       vc4_hvs_irq_handler, 0, "vc4 hvs", drm);  in vc4_hvs_bind()
902 	struct vc4_hvs *hvs = vc4->hvs;  in vc4_hvs_unbind()  local
905 	if (drm_mm_node_allocated(&vc4->hvs->mitchell_netravali_filter))  in vc4_hvs_unbind()
906 		drm_mm_remove_node(&vc4->hvs->mitchell_netravali_filter);  in vc4_hvs_unbind()
908 	drm_mm_for_each_node_safe(node, next, &vc4->hvs->dlist_mm)  in vc4_hvs_unbind()
911 	drm_mm_takedown(&vc4->hvs->dlist_mm);  in vc4_hvs_unbind()
913 	drm_mm_for_each_node_safe(node, next, &vc4->hvs->lbm_mm)  in vc4_hvs_unbind()
915 	drm_mm_takedown(&vc4->hvs->lbm_mm);  in vc4_hvs_unbind()
917 	clk_disable_unprepare(hvs->core_clk);  in vc4_hvs_unbind()
919 	vc4->hvs = NULL;  in vc4_hvs_unbind()
939 	{ .compatible = "brcm,bcm2711-hvs" },
940 	{ .compatible = "brcm,bcm2835-hvs" },