Add writeback as a sysfs attribute. This can be used to show and store the dummy writeback panel that the manager can connect to.
Add checks so that in the store functions so that a display store cant set a writeback device and vice versa. Signed-off-by: Archit Taneja <[email protected]> --- drivers/video/omap2/dss/manager.c | 38 +++++++++++++++++++++++++++++++++++++ 1 files changed, 38 insertions(+), 0 deletions(-) diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c index fb7c1e6..a064656 100644 --- a/drivers/video/omap2/dss/manager.c +++ b/drivers/video/omap2/dss/manager.c @@ -129,6 +129,41 @@ static ssize_t manager_display_store(struct omap_overlay_manager *mgr, if (r) return r; + if (dssdev->wbdev) { + r = -EINVAL; + return r; + } + + r = dss_mgr_set_output(mgr, dssdev); + if (r) + return r; + + return size; +} + +static ssize_t manager_writeback_show(struct omap_overlay_manager *mgr, char *buf) +{ + struct omap_dss_device *wb_device = mgr->get_writeback(mgr); + + return snprintf(buf, PAGE_SIZE, "%s\n", wb_device ? + wb_device->name : "<none>"); +} + +static ssize_t manager_writeback_store(struct omap_overlay_manager *mgr, + const char *buf, size_t size) +{ + int r; + struct omap_dss_device *dssdev; + + r = dss_find_device_buf(&dssdev, buf, size); + if (r) + return r; + + if (!dssdev->wbdev) { + r = -EINVAL; + return r; + } + r = dss_mgr_set_output(mgr, dssdev); if (r) return r; @@ -452,6 +487,8 @@ struct manager_attribute { static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL); static MANAGER_ATTR(display, S_IRUGO|S_IWUSR, manager_display_show, manager_display_store); +static MANAGER_ATTR(writeback, S_IRUGO|S_IWUSR, + manager_writeback_show, manager_writeback_store); static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR, manager_default_color_show, manager_default_color_store); static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR, @@ -475,6 +512,7 @@ static MANAGER_ATTR(cpr_coef, S_IRUGO|S_IWUSR, static struct attribute *manager_sysfs_attrs[] = { &manager_attr_name.attr, &manager_attr_display.attr, + &manager_attr_writeback.attr, &manager_attr_default_color.attr, &manager_attr_trans_key_type.attr, &manager_attr_trans_key_value.attr, -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
