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path: root/drivers/video/bcm2835.c
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* bcm2835 video: Map fb as cachedAlexander Graf2016-03-271-0/+9
| | | | | | | | | The bcm2835 frame buffer is in RAM, so we can easily map it as cached and gain all the glorious performance boost that brings with it. Signed-off-by: Alexander Graf <agraf@suse.de> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
* video: bcm2835: use bus_to_phys() on FB addressStephen Warren2016-02-061-1/+3
| | | | | | | | | | | | | | | | The FB address is generated by the firmware running on the GPU/VideoCore and is a "bus" address. This address is the other side of an IOMMU from the ARM upon which U-Boot is running. Use bus_to_phys() to convert this to an ARM physical address. Without this, U-Boot seems to work just fine, but once the Linux kernel boots on an RPi2, accessing the FB memory often causes a hard system hang. This is related to: 122426d46e31 ARM: bcm2835: use phys_to_bus() for mbox 5c0beb5c58c8 usb: dwc2: use phys_to_bus/bus_to_phys 79340db7f1f6 ARM: bcm2835: implement phys_to_bus/bus_to_phys Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
* Move ALLOC_CACHE_ALIGN_BUFFER() to the new memalign.h headerSimon Glass2015-09-111-0/+1
| | | | | | | Now that we have a new header file for cache-aligned allocation, we should move the stack-based allocation macro there also. Signed-off-by: Simon Glass <sjg@chromium.org>
* ARM: bcm283x: Allocate all mailbox buffers cacheline alignedAlexander Stein2015-08-121-2/+2
| | | | | | | | | | The mailbox buffer is required to be at least 16 bytes aligned, but for cache invalidation and/or flush it needs to be cacheline aligned. Use ALLOC_CACHE_ALIGN_BUFFER for all mailbox buffer allocations. Signed-off-by: Alexander Stein <alexanders83@web.de> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
* video: bcm2835: respect the pitch valueAndre Heider2013-11-121-0/+11
| | | | | | | | | | | | | | | | Depending on the firmware's video options [1] the active SDTV or HDTV mode can yield a framebuffer with noncontiguous horizontal lines, giving a messed up display, for both, u-boot and the loaded kernel. Fix this by setting lcd_line_length to the pitch value of the configured framebuffer. [1] http://elinux.org/RPiconfig#Video_mode_options Signed-off-by: Andre Heider <a.heider@gmail.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-241-12/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* video: bcm2835: fix build issuesAnatolij Gustschin2013-03-291-11/+0
| | | | | | | | | After merging LCD patches for v2013.04 the bcm2835 video driver building is broken due to removal of many global variables. Fix the driver. Signed-off-by: Anatolij Gustschin <agust@denx.de> Cc: Stephen Warren <swarren@wwwdotorg.org>
* video: add a driver for the bcm2835Stephen Warren2013-03-201-0/+127
The firmware running on the bcm2835 SoC's VideoCore CPU manages the display controller. Add a simple "LCD" driver that communicates with the firmware using the property mailbox protocol. This configures the display and frame-buffer to match whatever physical resolution the firmware chosen when booting, which is typically the native resolution of the attached display device, presumably unless otherwise specified in config.txt on the boot media. Enable this driver in the Raspberry Pi board configuration. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Anatolij Gustschin <agust@denx.de>
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