diff options
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hvs.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hvs.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c index 8098c5b21ba4..9e435545b3b6 100644 --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -119,6 +119,17 @@ static int vc4_hvs_bind(struct device *dev, struct device *master, void *data) hvs->dlist = hvs->regs + SCALER_DLIST_START; + spin_lock_init(&hvs->mm_lock); + + /* Set up the HVS display list memory manager. We never + * overwrite the setup from the bootloader (just 128b out of + * our 16K), since we don't want to scramble the screen when + * transitioning from the firmware's boot setup to runtime. + */ + drm_mm_init(&hvs->dlist_mm, + HVS_BOOTLOADER_DLIST_END, + (SCALER_DLIST_SIZE >> 2) - HVS_BOOTLOADER_DLIST_END); + vc4->hvs = hvs; return 0; } @@ -129,6 +140,8 @@ static void vc4_hvs_unbind(struct device *dev, struct device *master, struct drm_device *drm = dev_get_drvdata(master); struct vc4_dev *vc4 = drm->dev_private; + drm_mm_takedown(&vc4->hvs->dlist_mm); + vc4->hvs = NULL; } |
