Hi,
I have applied patch in attach for imx6q 4.1.15 framebuffer rotate. it working fine. but later framebuffer set_par with 3 page flip buffer through below code in another driver, IPU SDC will update fail. if FB0_FLIP_BUFFER_NUM use 1, it works fine.
[ 13.333544] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A800000, current buf 1, buf0 ready 1, buf1 ready 1, buf2 ready 0
[ 13.447193] mxc_sdc_fb fb@0: Error updating SDC buf 1 to address=0x1AB00000, current buf 1, buf0 ready 1, buf1 ready 0, buf2 ready 0
[ 13.563912] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A500000, current buf 1, buf0 ready 1, buf1 ready 1, buf2 ready 0
[ 13.771218] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1AB00000, current buf 0, buf0 ready 0, buf1 ready 1, buf2 ready 0
[ 14.000068] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A800000, current buf 0, buf0 ready 0, buf1 ready 1, buf2 ready 0
[ 14.119145] mxc_sdc_fb fb@0: Error updating SDC buf 1 to address=0x1AB00000, current buf 0, buf0 ready 1, buf1 ready 1, buf2 ready 0
[ 14.335582] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A800000, current buf 1, buf0 ready 1, buf1 ready 1, buf2 ready 0
[ 14.541331] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A500000, current buf 0, buf0 ready 0, buf1 ready 1, buf2 ready 0
[ 14.639933] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A800000, current buf 1, buf0 ready 1, buf1 ready 1, buf2 ready 0
[ 14.845036] mxc_sdc_fb fb@0: Error updating SDC buf 0 to address=0x1A500000, current buf 0, buf0 ready 0, buf1 ready 1, buf2 ready 0
#define FB0_FLIP_BUFFER_NUM 3
6 fbi_fb0 = registered_fb[0];
15 if(fbi_fb0 == NULL){
14 return -1;
13 }
12 memcpy(&var, &fbi_fb0->var, sizeof(var));
11 console_lock();
10 fbi_fb0->flags |= FBINFO_MISC_USEREVENT;
9 var.xres_virtual = ALIGN_PIXEL_16(var.xres);
8 var.yres_virtual = ALIGN_PIXEL_16(var.yres) * FB0_FLIP_BUFFER_NUM;
7 fb_set_var(fbi_fb0, &var);
6 fbi_fb0->flags &= ~FBINFO_MISC_USEREVENT;
5 console_unlock();
