I found it from one of their people on their forums. I tried to track it down in their github, but hadn't found it yet. Since it has a main function, I assume just compile that bit of code and run it as a executable. They may have written it into a kernel patch versus standalone (after demo) for their hosted image (Debian?), I'll see if I can find out.
On November 10, 2015 6:20:59 AM CST, Jim Perrin jperrin@centos.org wrote:
So, I'll blame it (publicly at least) on not having coffee yet this morning. Where did you turn up this bit of code, and what does this get added to?
On 11/10/2015 05:46 AM, cc35359@gmail.com wrote:
I believe this will do it for you. Code provided for their demo
units. Its due in the end, to the fact that the board outputs one strict resolution. I can't find any sort of licensing on this tiny bit of code though, but the source is made public, freely available with no warranty is the closest I can find to a license.
#include <fcntl.h>
#include <linux/fb.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <assert.h>
int main(int argc, char **argv) {
struct fb_fix_screeninfo fixed; struct fb_var_screeninfo variable; char *fb; int line_size, size, buffer_size, i; int fd = open("/dev/fb0", O_RDWR); ioctl(fd, FBIOGET_VSCREENINFO, &variable); variable.xres = 1280; variable.yres = 720; variable.xres_virtual = 1280; variable.yres_virtual = 1440; variable.bits_per_pixel = 24; ioctl(fd, FBIOPUT_VSCREENINFO, &variable); ioctl(fd, FBIOGET_FSCREENINFO, &fixed); variable.xoffset = 0; variable.yoffset = 720; ioctl(fd, FBIOPAN_DISPLAY, &variable); variable.xoffset = 0; variable.yoffset = 0; ioctl(fd, FBIOPAN_DISPLAY, &variable); close(fd); return 0;}
On November 9, 2015 4:22:42 PM CST, Jim Perrin jperrin@centos.org
wrote:
I've posted a first build of CentOS for the Hikey from 96boards, and
a
ReadMe with the steps required to get the board going.
http://people.centos.org/jperrin/hikey/
The ReadMe assumes that you've at least skimmed the 'Getting
Started'
section of the Hikey documentation, but walks through the fastboot commands to load the image.
What I consider the 'blocker' to releasing this image presently is
the
lack of console output on HDMI. If someone's able to make that go, I will happily mail them some CentOS swag and put their name in the release notes for the image.
-- Jim Perrin The CentOS Project | http://www.centos.org twitter: @BitIntegrity | GPG Key: FA09AD77 _______________________________________________ Arm-dev mailing list Arm-dev@centos.org https://lists.centos.org/mailman/listinfo/arm-dev
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-- Jim Perrin The CentOS Project | http://www.centos.org twitter: @BitIntegrity | GPG Key: FA09AD77 _______________________________________________ Arm-dev mailing list Arm-dev@centos.org https://lists.centos.org/mailman/listinfo/arm-dev