12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2012 Stephen Warren
- */
- #include <common.h>
- #include <dm.h>
- #include <log.h>
- #include <video.h>
- #include <asm/arch/mbox.h>
- #include <asm/arch/msg.h>
- #include <asm/cache.h>
- static int bcm2835_video_probe(struct udevice *dev)
- {
- struct video_uc_platdata *plat = dev_get_uclass_platdata(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,bcm2708-fb" },
- { }
- };
- U_BOOT_DRIVER(bcm2835_video) = {
- .name = "bcm2835_video",
- .id = UCLASS_VIDEO,
- .of_match = bcm2835_video_ids,
- .probe = bcm2835_video_probe,
- };
|