Am Donnerstag, den 21.04.2016, 15:33 +0300 schrieb Ivan Nikolaenko:

Hello all!

Mr. Fabio Estevam from freescale community forum advisedto address this question to this mail list.

I am using a i.MX6Q SabreSD -based board with 3.14.52 kernel from Jethro (2.0) release of FSL-Community-BSP.

I need to do a 180 degree vertical flip of the framebuffer using imx-drm upon kernel initialization. But I can see that in the ./drivers/video/mxc/mxc_ipuv3_fb.c file there are no support of rotation. Howisit meantto do?

No idea about the FSL kernel, but 180° rotation can't be done without going through the IC, as far as I know. For a straight vertical flip you'd just have to set the VF bit on the scanout IDMAC channel's CPMEM. For example as a quick hack on v4.6-rc4:

-----8<----- diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c index 681ec6e..37d9ebd 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -291,6 +291,7 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc, ipu_dmfc_config_wait4eot(ipu_plane->dmfc, crtc_w);

ipu_cpmem_zero(ipu_plane->ipu_ch); + ipu_cpmem_set_rotation(ipu_plane->ipu_ch, IPU_ROTATE_VERT_FLIP); ipu_cpmem_set_resolution(ipu_plane->ipu_ch, src_w, src_h); ret = ipu_cpmem_set_fmt(ipu_plane->ipu_ch, fb->pixel_format); if (ret < 0) { ----->8-----

I suppose that could be hooked up to the KMS rotation property (reflect-y).

regards Philipp