// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2012 Stephen Warren */ #include #include #include #include #include #include #include static int bcm2835_video_probe(struct udevice *dev) { struct video_uc_plat *plat = dev_get_uclass_plat(dev); struct video_priv *uc_priv = dev_get_uclass_priv(dev); int ret; int w, h, pitch; ulong fb_base, fb_size, fb_start, fb_end; debug("bcm2835: Query resolution...\n"); ret = bcm2835_get_video_size(&w, &h); if (ret || w == 0 || h == 0) return -EIO; debug("bcm2835: Setting up display for %d x %d\n", w, h); ret = bcm2835_set_video_params(&w, &h, 32, BCM2835_MBOX_PIXEL_ORDER_RGB, BCM2835_MBOX_ALPHA_MODE_IGNORED, &fb_base, &fb_size, &pitch); if (ret) return -EIO; debug("bcm2835: Final resolution is %d x %d\n", w, h); /* Enable dcache for the frame buffer */ fb_start = fb_base & ~(MMU_SECTION_SIZE - 1); fb_end = fb_base + fb_size; fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT); mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start, DCACHE_WRITEBACK); video_set_flush_dcache(dev, true); uc_priv->xsize = w; uc_priv->ysize = h; uc_priv->bpix = VIDEO_BPP32; plat->base = fb_base; plat->size = fb_size; return 0; } static const struct udevice_id bcm2835_video_ids[] = { { .compatible = "brcm,bcm2835-hdmi" }, { .compatible = "brcm,bcm2711-hdmi0" }, { .compatible = "brcm,bcm2708-fb" }, #if !IS_ENABLED(CONFIG_VIDEO_DT_SIMPLEFB) { .compatible = "simple-framebuffer" }, #endif { } }; U_BOOT_DRIVER(bcm2835_video) = { .name = "bcm2835_video", .id = UCLASS_VIDEO, .of_match = bcm2835_video_ids, .probe = bcm2835_video_probe, };