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/openbmc/linux/drivers/gpu/drm/exynos/ |
H A D | exynos_drm_crtc.c | 32aeab17 Thu Sep 13 23:29:47 CDT 2012 Inki Dae <inki.dae@samsung.com> drm/exynos: check crtc's dpms mode at SetCrtc
when fb changing is requested, crtc's dpms mode should be on. if not on, return -EPERM so that the hardware can't be accessed. if user requesed dpms off and next SetCrtc with an another fb then the hardware can be accessed with dpms off to write overlay data onto some registers so this patch will prevent from accessing the hardware with dpms off.
Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> 32aeab17 Thu Sep 13 23:29:47 CDT 2012 Inki Dae <inki.dae@samsung.com> drm/exynos: check crtc's dpms mode at SetCrtc when fb changing is requested, crtc's dpms mode should be on. if not on, return -EPERM so that the hardware can't be accessed. if user requesed dpms off and next SetCrtc with an another fb then the hardware can be accessed with dpms off to write overlay data onto some registers so this patch will prevent from accessing the hardware with dpms off. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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