1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2012 Stephen Warren
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <dm.h>
9*4882a593Smuzhiyun #include <video.h>
10*4882a593Smuzhiyun #include <asm/arch/mbox.h>
11*4882a593Smuzhiyun #include <asm/arch/msg.h>
12*4882a593Smuzhiyun
bcm2835_video_probe(struct udevice * dev)13*4882a593Smuzhiyun static int bcm2835_video_probe(struct udevice *dev)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
16*4882a593Smuzhiyun struct video_priv *uc_priv = dev_get_uclass_priv(dev);
17*4882a593Smuzhiyun int ret;
18*4882a593Smuzhiyun int w, h, pitch;
19*4882a593Smuzhiyun ulong fb_base, fb_size, fb_start, fb_end;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun debug("bcm2835: Query resolution...\n");
22*4882a593Smuzhiyun ret = bcm2835_get_video_size(&w, &h);
23*4882a593Smuzhiyun if (ret)
24*4882a593Smuzhiyun return -EIO;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun debug("bcm2835: Setting up display for %d x %d\n", w, h);
27*4882a593Smuzhiyun ret = bcm2835_set_video_params(&w, &h, 32, BCM2835_MBOX_PIXEL_ORDER_RGB,
28*4882a593Smuzhiyun BCM2835_MBOX_ALPHA_MODE_IGNORED,
29*4882a593Smuzhiyun &fb_base, &fb_size, &pitch);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun debug("bcm2835: Final resolution is %d x %d\n", w, h);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun /* Enable dcache for the frame buffer */
34*4882a593Smuzhiyun fb_start = fb_base & ~(MMU_SECTION_SIZE - 1);
35*4882a593Smuzhiyun fb_end = fb_base + fb_size;
36*4882a593Smuzhiyun fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
37*4882a593Smuzhiyun mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
38*4882a593Smuzhiyun DCACHE_WRITEBACK);
39*4882a593Smuzhiyun video_set_flush_dcache(dev, true);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun uc_priv->xsize = w;
42*4882a593Smuzhiyun uc_priv->ysize = h;
43*4882a593Smuzhiyun uc_priv->bpix = VIDEO_BPP32;
44*4882a593Smuzhiyun plat->base = fb_base;
45*4882a593Smuzhiyun plat->size = fb_size;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun return 0;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun static const struct udevice_id bcm2835_video_ids[] = {
51*4882a593Smuzhiyun { .compatible = "brcm,bcm2835-hdmi" },
52*4882a593Smuzhiyun { }
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun U_BOOT_DRIVER(bcm2835_video) = {
56*4882a593Smuzhiyun .name = "bcm2835_video",
57*4882a593Smuzhiyun .id = UCLASS_VIDEO,
58*4882a593Smuzhiyun .of_match = bcm2835_video_ids,
59*4882a593Smuzhiyun .probe = bcm2835_video_probe,
60*4882a593Smuzhiyun };
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