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git01.mediatek.com / filogic / uboot / 1e26864b5a0cc69abaa2c88634bb3f807e6cd60c / . / drivers / video / bcm2835.c
blob: 1d2eda084c87619cd3546da691e099185e08ee77 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -0400[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]2/*
3 * (C) Copyright 2012 Stephen Warren
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]4 */
5
6#include <common.h>
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]7#include <dm.h>
8#include <video.h>
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]9#include <asm/arch/mbox.h>
Simon Glass31efc382017-04-05 16:23:40 -0600[diff] [blame]10#include <asm/arch/msg.h>
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]11
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]12static int bcm2835_video_probe(struct udevice *dev)
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]13{
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]14 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
15 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]16 int ret;
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]17 int w, h, pitch;
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]18 ulong fb_base, fb_size, fb_start, fb_end;
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]19
20 debug("bcm2835: Query resolution...\n");
Simon Glass31efc382017-04-05 16:23:40 -0600[diff] [blame]21 ret = bcm2835_get_video_size(&w, &h);
Fabian Vogt26d33e52019-07-11 16:56:24 +0200[diff] [blame]22 if (ret || w == 0 || h == 0)
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]23 return -EIO;
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]24
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]25 debug("bcm2835: Setting up display for %d x %d\n", w, h);
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]26 ret = bcm2835_set_video_params(&w, &h, 32, BCM2835_MBOX_PIXEL_ORDER_RGB,
27 BCM2835_MBOX_ALPHA_MODE_IGNORED,
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]28 &fb_base, &fb_size, &pitch);
Fabian Vogt26d33e52019-07-11 16:56:24 +0200[diff] [blame]29 if (ret)
30 return -EIO;
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]31
32 debug("bcm2835: Final resolution is %d x %d\n", w, h);
33
Alexander Graf2e1075c2016-03-24 10:31:11 +0100[diff] [blame]34 /* Enable dcache for the frame buffer */
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]35 fb_start = fb_base & ~(MMU_SECTION_SIZE - 1);
36 fb_end = fb_base + fb_size;
Alexander Graf2e1075c2016-03-24 10:31:11 +0100[diff] [blame]37 fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
38 mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]39 DCACHE_WRITEBACK);
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]40 video_set_flush_dcache(dev, true);
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]41
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]42 uc_priv->xsize = w;
43 uc_priv->ysize = h;
44 uc_priv->bpix = VIDEO_BPP32;
45 plat->base = fb_base;
46 plat->size = fb_size;
47
48 return 0;
Andre Heider191211c2013-11-09 11:07:53 +0100[diff] [blame]49}
50
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]51static const struct udevice_id bcm2835_video_ids[] = {
52 { .compatible = "brcm,bcm2835-hdmi" },
Emmanuel Vadote2705192018-07-02 14:33:14 +0200[diff] [blame]53 { .compatible = "brcm,bcm2708-fb" },
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]54 { }
55};
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]56
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]57U_BOOT_DRIVER(bcm2835_video) = {
58 .name = "bcm2835_video",
59 .id = UCLASS_VIDEO,
60 .of_match = bcm2835_video_ids,
61 .probe = bcm2835_video_probe,
62};