static int omap_dss_set_manager(struct omap_overlay *ovl, struct omap_overlay_manager *mgr) { if (!mgr) return -EINVAL; if (ovl->manager) { DSSERR("overlay '%s' already has a manager '%s'\n", ovl->name, ovl->manager->name); return -EINVAL; } if (ovl->info.enabled) { DSSERR("overlay has to be disabled to change the manager\n"); return -EINVAL; } ovl->manager = mgr; dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1); /* XXX: on manual update display, in auto update mode, a bug happens * here. When an overlay is first enabled on LCD, then it's disabled, * and the manager is changed to TV, we sometimes get SYNC_LOST_DIGIT * errors. Waiting before changing the channel_out fixes it. I'm * guessing that the overlay is still somehow being used for the LCD, * but I don't understand how or why. */ msleep(40); dispc_set_channel_out(ovl->id, mgr->id); dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1); return 0; }
static int omap_dss_set_manager(struct omap_overlay *ovl, struct omap_overlay_manager *mgr) { if (!mgr) return -EINVAL; if (ovl->manager) { DSSERR("overlay '%s' already has a manager '%s'\n", ovl->name, ovl->manager->name); return -EINVAL; } if (ovl->info.enabled) { DSSERR("overlay has to be disabled to change the manager\n"); return -EINVAL; } ovl->manager = mgr; /* do not set channel out if DSS is off */ if (!dss_get_mainclk_state()) { DSSERR("DSS clock not active, setting ovl manager failed\n"); return -EIO; } dispc_set_channel_out(ovl->id, mgr->id); return 0; }