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git01.mediatek.com / filogic / uboot / 3338d9a70287029d19d6597fb2af67e1a1de2c59 / . / drivers / video / bcm2835.c
blob: 602d87d3dbeab1b0b904312e6b1760ecd4c1a5cc [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);
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]22 if (ret)
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);
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]29
30 debug("bcm2835: Final resolution is %d x %d\n", w, h);
31
Alexander Graf2e1075c2016-03-24 10:31:11 +0100[diff] [blame]32 /* Enable dcache for the frame buffer */
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]33 fb_start = fb_base & ~(MMU_SECTION_SIZE - 1);
34 fb_end = fb_base + fb_size;
Alexander Graf2e1075c2016-03-24 10:31:11 +0100[diff] [blame]35 fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
36 mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]37 DCACHE_WRITEBACK);
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]38 video_set_flush_dcache(dev, true);
Stephen Warren4ecd4982013-01-29 16:37:40 +0000[diff] [blame]39
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]40 uc_priv->xsize = w;
41 uc_priv->ysize = h;
42 uc_priv->bpix = VIDEO_BPP32;
43 plat->base = fb_base;
44 plat->size = fb_size;
45
46 return 0;
Andre Heider191211c2013-11-09 11:07:53 +0100[diff] [blame]47}
48
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]49static const struct udevice_id bcm2835_video_ids[] = {
50 { .compatible = "brcm,bcm2835-hdmi" },
51 { }
52};
Simon Glass929df012017-04-05 16:23:41 -0600[diff] [blame]53
Simon Glass39254d02017-04-05 16:23:44 -0600[diff] [blame]54U_BOOT_DRIVER(bcm2835_video) = {
55 .name = "bcm2835_video",
56 .id = UCLASS_VIDEO,
57 .of_match = bcm2835_video_ids,
58 .probe = bcm2835_video_probe,
59};