diff options
Diffstat (limited to 'drivers/video/omap2/dss/apply.c')
| -rw-r--r-- | drivers/video/omap2/dss/apply.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c index 72f3468b0790..3cc47265bb03 100644 --- a/drivers/video/omap2/dss/apply.c +++ b/drivers/video/omap2/dss/apply.c @@ -1174,6 +1174,76 @@ err: return r; } +int dss_mgr_set_output(struct omap_overlay_manager *mgr, + struct omap_dss_output *output) +{ + int r; + + mutex_lock(&apply_lock); + + if (mgr->output) { + DSSERR("manager %s is already connected to an output\n", + mgr->name); + r = -EINVAL; + goto err; + } + + if ((mgr->supported_outputs & output->id) == 0) { + DSSERR("output does not support manager %s\n", + mgr->name); + r = -EINVAL; + goto err; + } + + output->manager = mgr; + mgr->output = output; + + mutex_unlock(&apply_lock); + + return 0; +err: + mutex_unlock(&apply_lock); + return r; +} + +int dss_mgr_unset_output(struct omap_overlay_manager *mgr) +{ + int r; + struct mgr_priv_data *mp = get_mgr_priv(mgr); + unsigned long flags; + + mutex_lock(&apply_lock); + + if (!mgr->output) { + DSSERR("failed to unset output, output not set\n"); + r = -EINVAL; + goto err; + } + + spin_lock_irqsave(&data_lock, flags); + + if (mp->enabled) { + DSSERR("output can't be unset when manager is enabled\n"); + r = -EINVAL; + goto err1; + } + + spin_unlock_irqrestore(&data_lock, flags); + + mgr->output->manager = NULL; + mgr->output = NULL; + + mutex_unlock(&apply_lock); + + return 0; +err1: + spin_unlock_irqrestore(&data_lock, flags); +err: + mutex_unlock(&apply_lock); + + return r; +} + static void dss_apply_mgr_timings(struct omap_overlay_manager *mgr, const struct omap_video_timings *timings) { |