2 * linux/drivers/video/omap2/dss/manager.c
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * Some code and ideas taken from drivers/video/omap/ driver
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
23 #define DSS_SUBSYS_NAME "MANAGER"
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/module.h>
28 #include <linux/platform_device.h>
29 #include <linux/jiffies.h>
31 #include <video/omapdss.h>
34 #include "dss_features.h"
36 static int num_managers;
37 static struct omap_overlay_manager *managers;
39 int dss_init_overlay_managers(struct platform_device *pdev)
43 num_managers = dss_feat_get_num_mgrs();
45 managers = kzalloc(sizeof(struct omap_overlay_manager) * num_managers,
48 BUG_ON(managers == NULL);
50 for (i = 0; i < num_managers; ++i) {
51 struct omap_overlay_manager *mgr = &managers[i];
56 mgr->id = OMAP_DSS_CHANNEL_LCD;
60 mgr->id = OMAP_DSS_CHANNEL_DIGIT;
64 mgr->id = OMAP_DSS_CHANNEL_LCD2;
68 mgr->id = OMAP_DSS_CHANNEL_LCD3;
73 mgr->supported_displays =
74 dss_feat_get_supported_displays(mgr->id);
75 mgr->supported_outputs =
76 dss_feat_get_supported_outputs(mgr->id);
78 INIT_LIST_HEAD(&mgr->overlays);
80 r = dss_manager_kobj_init(mgr, pdev);
82 DSSERR("failed to create sysfs file\n");
88 void dss_uninit_overlay_managers(struct platform_device *pdev)
92 for (i = 0; i < num_managers; ++i) {
93 struct omap_overlay_manager *mgr = &managers[i];
94 dss_manager_kobj_uninit(mgr);
102 int omap_dss_get_num_overlay_managers(void)
106 EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
108 struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
110 if (num >= num_managers)
113 return &managers[num];
115 EXPORT_SYMBOL(omap_dss_get_overlay_manager);
117 int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
118 const struct omap_overlay_manager_info *info)
120 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) {
122 * OMAP3 supports only graphics source transparency color key
123 * and alpha blending simultaneously. See TRM 15.4.2.4.2.2
126 if (info->partial_alpha_enabled && info->trans_enabled
127 && info->trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST) {
128 DSSERR("check_manager: illegal transparency key\n");
136 static int dss_mgr_check_zorder(struct omap_overlay_manager *mgr,
137 struct omap_overlay_info **overlay_infos)
139 struct omap_overlay *ovl1, *ovl2;
140 struct omap_overlay_info *info1, *info2;
142 list_for_each_entry(ovl1, &mgr->overlays, list) {
143 info1 = overlay_infos[ovl1->id];
148 list_for_each_entry(ovl2, &mgr->overlays, list) {
152 info2 = overlay_infos[ovl2->id];
157 if (info1->zorder == info2->zorder) {
158 DSSERR("overlays %d and %d have the same "
160 ovl1->id, ovl2->id, info1->zorder);
169 int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
170 const struct omap_video_timings *timings)
172 if (!dispc_mgr_timings_ok(mgr->id, timings)) {
173 DSSERR("check_manager: invalid timings\n");
180 static int dss_mgr_check_lcd_config(struct omap_overlay_manager *mgr,
181 const struct dss_lcd_mgr_config *config)
183 struct dispc_clock_info cinfo = config->clock_info;
184 int dl = config->video_port_width;
185 bool stallmode = config->stallmode;
186 bool fifohandcheck = config->fifohandcheck;
188 if (cinfo.lck_div < 1 || cinfo.lck_div > 255)
191 if (cinfo.pck_div < 1 || cinfo.pck_div > 255)
194 if (dl != 12 && dl != 16 && dl != 18 && dl != 24)
197 /* fifohandcheck should be used only with stallmode */
198 if (stallmode == false && fifohandcheck == true)
202 * io pad mode can be only checked by using dssdev connected to the
203 * manager. Ignore checking these for now, add checks when manager
204 * is capable of holding information related to the connected interface
210 int dss_mgr_check(struct omap_overlay_manager *mgr,
211 struct omap_overlay_manager_info *info,
212 const struct omap_video_timings *mgr_timings,
213 const struct dss_lcd_mgr_config *lcd_config,
214 struct omap_overlay_info **overlay_infos)
216 struct omap_overlay *ovl;
219 if (dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) {
220 r = dss_mgr_check_zorder(mgr, overlay_infos);
225 r = dss_mgr_check_timings(mgr, mgr_timings);
229 r = dss_mgr_check_lcd_config(mgr, lcd_config);
233 list_for_each_entry(ovl, &mgr->overlays, list) {
234 struct omap_overlay_info *oi;
237 oi = overlay_infos[ovl->id];
242 r = dss_ovl_check(ovl, oi, mgr_timings);