diff options
Diffstat (limited to 'drivers/gpu/drm/arm/hdlcd_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/arm/hdlcd_crtc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c index 20ebfb4fbdfa..798a3cc480a2 100644 --- a/drivers/gpu/drm/arm/hdlcd_crtc.c +++ b/drivers/gpu/drm/arm/hdlcd_crtc.c @@ -42,6 +42,24 @@ static void hdlcd_crtc_cleanup(struct drm_crtc *crtc) drm_crtc_cleanup(crtc); } +static int hdlcd_crtc_enable_vblank(struct drm_crtc *crtc) +{ + struct hdlcd_drm_private *hdlcd = crtc_to_hdlcd_priv(crtc); + unsigned int mask = hdlcd_read(hdlcd, HDLCD_REG_INT_MASK); + + hdlcd_write(hdlcd, HDLCD_REG_INT_MASK, mask | HDLCD_INTERRUPT_VSYNC); + + return 0; +} + +static void hdlcd_crtc_disable_vblank(struct drm_crtc *crtc) +{ + struct hdlcd_drm_private *hdlcd = crtc_to_hdlcd_priv(crtc); + unsigned int mask = hdlcd_read(hdlcd, HDLCD_REG_INT_MASK); + + hdlcd_write(hdlcd, HDLCD_REG_INT_MASK, mask & ~HDLCD_INTERRUPT_VSYNC); +} + static const struct drm_crtc_funcs hdlcd_crtc_funcs = { .destroy = hdlcd_crtc_cleanup, .set_config = drm_atomic_helper_set_config, @@ -49,6 +67,8 @@ static const struct drm_crtc_funcs hdlcd_crtc_funcs = { .reset = drm_atomic_helper_crtc_reset, .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, + .enable_vblank = hdlcd_crtc_enable_vblank, + .disable_vblank = hdlcd_crtc_disable_vblank, }; static struct simplefb_format supported_formats[] = SIMPLEFB_FORMATS; |