--- /dev/null
+/*
+ * linux/drivers/video/omap2/dss/manager.c
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
+ *
+ * Some code and ideas taken from drivers/video/omap/ driver
+ * by Imre Deak.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define DSS_SUBSYS_NAME "MANAGER"
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/jiffies.h>
+
+#include <video/omapdss.h>
+
+#include "dss.h"
+#include "dss_features.h"
+
+static int num_managers;
+static struct omap_overlay_manager *managers;
+
+int dss_init_overlay_managers(void)
+{
+ int i;
+
+ num_managers = dss_feat_get_num_mgrs();
+
+ managers = kzalloc(sizeof(struct omap_overlay_manager) * num_managers,
+ GFP_KERNEL);
+
+ BUG_ON(managers == NULL);
+
+ for (i = 0; i < num_managers; ++i) {
+ struct omap_overlay_manager *mgr = &managers[i];
+
+ switch (i) {
+ case 0:
+ mgr->name = "lcd";
+ mgr->id = OMAP_DSS_CHANNEL_LCD;
+ break;
+ case 1:
+ mgr->name = "tv";
+ mgr->id = OMAP_DSS_CHANNEL_DIGIT;
+ break;
+ case 2:
+ mgr->name = "lcd2";
+ mgr->id = OMAP_DSS_CHANNEL_LCD2;
+ break;
+ case 3:
+ mgr->name = "lcd3";
+ mgr->id = OMAP_DSS_CHANNEL_LCD3;
+ break;
+ }
+
+ mgr->caps = 0;
+ mgr->supported_displays =
+ dss_feat_get_supported_displays(mgr->id);
+ mgr->supported_outputs =
+ dss_feat_get_supported_outputs(mgr->id);
+
+ INIT_LIST_HEAD(&mgr->overlays);
+ }
+
+ return 0;
+}
+
+int dss_init_overlay_managers_sysfs(struct platform_device *pdev)
+{
+ int i, r;
+
+ for (i = 0; i < num_managers; ++i) {
+ struct omap_overlay_manager *mgr = &managers[i];
+
+ r = dss_manager_kobj_init(mgr, pdev);
+ if (r)
+ DSSERR("failed to create sysfs file\n");
+ }
+
+ return 0;
+}
+
+void dss_uninit_overlay_managers(void)
+{
+ kfree(managers);
+ managers = NULL;
+ num_managers = 0;
+}
+
+void dss_uninit_overlay_managers_sysfs(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < num_managers; ++i) {
+ struct omap_overlay_manager *mgr = &managers[i];
+
+ dss_manager_kobj_uninit(mgr);
+ }
+}
+
+int omap_dss_get_num_overlay_managers(void)
+{
+ return num_managers;
+}
+EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
+
+struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
+{
+ if (num >= num_managers)
+ return NULL;
+
+ return &managers[num];
+}
+EXPORT_SYMBOL(omap_dss_get_overlay_manager);
+
+int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
+ const struct omap_overlay_manager_info *info)
+{
+ if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) {
+ /*
+ * OMAP3 supports only graphics source transparency color key
+ * and alpha blending simultaneously. See TRM 15.4.2.4.2.2
+ * Alpha Mode.
+ */
+ if (info->partial_alpha_enabled && info->trans_enabled
+ && info->trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST) {
+ DSSERR("check_manager: illegal transparency key\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int dss_mgr_check_zorder(struct omap_overlay_manager *mgr,
+ struct omap_overlay_info **overlay_infos)
+{
+ struct omap_overlay *ovl1, *ovl2;
+ struct omap_overlay_info *info1, *info2;
+
+ list_for_each_entry(ovl1, &mgr->overlays, list) {
+ info1 = overlay_infos[ovl1->id];
+
+ if (info1 == NULL)
+ continue;
+
+ list_for_each_entry(ovl2, &mgr->overlays, list) {
+ if (ovl1 == ovl2)
+ continue;
+
+ info2 = overlay_infos[ovl2->id];
+
+ if (info2 == NULL)
+ continue;
+
+ if (info1->zorder == info2->zorder) {
+ DSSERR("overlays %d and %d have the same "
+ "zorder %d\n",
+ ovl1->id, ovl2->id, info1->zorder);
+ return -EINVAL;
+ }
+ }
+ }
+
+ return 0;
+}
+
+int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
+ const struct omap_video_timings *timings)
+{
+ if (!dispc_mgr_timings_ok(mgr->id, timings)) {
+ DSSERR("check_manager: invalid timings\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int dss_mgr_check_lcd_config(struct omap_overlay_manager *mgr,
+ const struct dss_lcd_mgr_config *config)
+{
+ struct dispc_clock_info cinfo = config->clock_info;
+ int dl = config->video_port_width;
+ bool stallmode = config->stallmode;
+ bool fifohandcheck = config->fifohandcheck;
+
+ if (cinfo.lck_div < 1 || cinfo.lck_div > 255)
+ return -EINVAL;
+
+ if (cinfo.pck_div < 1 || cinfo.pck_div > 255)
+ return -EINVAL;
+
+ if (dl != 12 && dl != 16 && dl != 18 && dl != 24)
+ return -EINVAL;
+
+ /* fifohandcheck should be used only with stallmode */
+ if (stallmode == false && fifohandcheck == true)
+ return -EINVAL;
+
+ /*
+ * io pad mode can be only checked by using dssdev connected to the
+ * manager. Ignore checking these for now, add checks when manager
+ * is capable of holding information related to the connected interface
+ */
+
+ return 0;
+}
+
+int dss_mgr_check(struct omap_overlay_manager *mgr,
+ struct omap_overlay_manager_info *info,
+ const struct omap_video_timings *mgr_timings,
+ const struct dss_lcd_mgr_config *lcd_config,
+ struct omap_overlay_info **overlay_infos)
+{
+ struct omap_overlay *ovl;
+ int r;
+
+ if (dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) {
+ r = dss_mgr_check_zorder(mgr, overlay_infos);
+ if (r)
+ return r;
+ }
+
+ r = dss_mgr_check_timings(mgr, mgr_timings);
+ if (r)
+ return r;
+
+ r = dss_mgr_check_lcd_config(mgr, lcd_config);
+ if (r)
+ return r;
+
+ list_for_each_entry(ovl, &mgr->overlays, list) {
+ struct omap_overlay_info *oi;
+ int r;
+
+ oi = overlay_infos[ovl->id];
+
+ if (oi == NULL)
+ continue;
+
+ r = dss_ovl_check(ovl, oi, mgr_timings);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff