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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 3900b45125dea0476c03f413ec80201865bfde70 / . / drivers / video / bcm2835.c
blob: 952ef5966118ce4f1ea90149120fc19bad93942b [file] [log] [blame]
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]1/*
2 * (C) Copyright 2012 Stephen Warren
3 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]4 * SPDX-License-Identifier: GPL-2.0+
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]5 */
6
7#include <common.h>
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]8#include <dm.h>
9#include <video.h>
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]10#include <asm/arch/mbox.h>
Simon Glass2e4170b2017-04-05 16:23:40 -0600[diff] [blame]11#include <asm/arch/msg.h>
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]12
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]13static int bcm2835_video_probe(struct udevice *dev)
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]14{
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]15 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
16 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]17 int ret;
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]18 int w, h, pitch;
Simon Glass7cac2fc2017-04-05 16:23:41 -0600[diff] [blame]19 ulong fb_base, fb_size, fb_start, fb_end;
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]20
21 debug("bcm2835: Query resolution...\n");
Simon Glass2e4170b2017-04-05 16:23:40 -0600[diff] [blame]22 ret = bcm2835_get_video_size(&w, &h);
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]23 if (ret)
24 return -EIO;
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]25
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]26 debug("bcm2835: Setting up display for %d x %d\n", w, h);
Simon Glass7cac2fc2017-04-05 16:23:41 -0600[diff] [blame]27 ret = bcm2835_set_video_params(&w, &h, 32, BCM2835_MBOX_PIXEL_ORDER_RGB,
28 BCM2835_MBOX_ALPHA_MODE_IGNORED,
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]29 &fb_base, &fb_size, &pitch);
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]30
31 debug("bcm2835: Final resolution is %d x %d\n", w, h);
32
Alexander Graf99de2542016-03-24 10:31:11 +0100[diff] [blame]33 /* Enable dcache for the frame buffer */
Simon Glass7cac2fc2017-04-05 16:23:41 -0600[diff] [blame]34 fb_start = fb_base & ~(MMU_SECTION_SIZE - 1);
35 fb_end = fb_base + fb_size;
Alexander Graf99de2542016-03-24 10:31:11 +0100[diff] [blame]36 fb_end = ALIGN(fb_end, 1 << MMU_SECTION_SHIFT);
37 mmu_set_region_dcache_behaviour(fb_start, fb_end - fb_start,
Simon Glass7cac2fc2017-04-05 16:23:41 -0600[diff] [blame]38 DCACHE_WRITEBACK);
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]39 video_set_flush_dcache(dev, true);
40
41 uc_priv->xsize = w;
42 uc_priv->ysize = h;
43 uc_priv->bpix = VIDEO_BPP32;
44 plat->base = fb_base;
45 plat->size = fb_size;
46
47 return 0;
Stephen Warren6be3c9f2013-01-29 16:37:40 +0000[diff] [blame]48}
49
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]50static const struct udevice_id bcm2835_video_ids[] = {
51 { .compatible = "brcm,bcm2835-hdmi" },
52 { }
53};
Andre Heider44376ef2013-11-09 11:07:53 +0100[diff] [blame]54
Simon Glassea843b62017-04-05 16:23:44 -0600[diff] [blame]55U_BOOT_DRIVER(bcm2835_video) = {
56 .name = "bcm2835_video",
57 .id = UCLASS_VIDEO,
58 .of_match = bcm2835_video_ids,
59 .probe = bcm2835_video_probe,
60};