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23#define DSS_SUBSYS_NAME "MANAGER"
24
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>
30
31#include <video/omapfb_dss.h>
32
33#include "dss.h"
34#include "dss_features.h"
35
36static int num_managers;
37static struct omap_overlay_manager *managers;
38
39int dss_init_overlay_managers(void)
40{
41 int i;
42
43 num_managers = dss_feat_get_num_mgrs();
44
45 managers = kcalloc(num_managers, sizeof(struct omap_overlay_manager),
46 GFP_KERNEL);
47
48 BUG_ON(managers == NULL);
49
50 for (i = 0; i < num_managers; ++i) {
51 struct omap_overlay_manager *mgr = &managers[i];
52
53 switch (i) {
54 case 0:
55 mgr->name = "lcd";
56 mgr->id = OMAP_DSS_CHANNEL_LCD;
57 break;
58 case 1:
59 mgr->name = "tv";
60 mgr->id = OMAP_DSS_CHANNEL_DIGIT;
61 break;
62 case 2:
63 mgr->name = "lcd2";
64 mgr->id = OMAP_DSS_CHANNEL_LCD2;
65 break;
66 case 3:
67 mgr->name = "lcd3";
68 mgr->id = OMAP_DSS_CHANNEL_LCD3;
69 break;
70 }
71
72 mgr->supported_displays =
73 dss_feat_get_supported_displays(mgr->id);
74 mgr->supported_outputs =
75 dss_feat_get_supported_outputs(mgr->id);
76
77 INIT_LIST_HEAD(&mgr->overlays);
78 }
79
80 return 0;
81}
82
83int dss_init_overlay_managers_sysfs(struct platform_device *pdev)
84{
85 int i, r;
86
87 for (i = 0; i < num_managers; ++i) {
88 struct omap_overlay_manager *mgr = &managers[i];
89
90 r = dss_manager_kobj_init(mgr, pdev);
91 if (r)
92 DSSERR("failed to create sysfs file\n");
93 }
94
95 return 0;
96}
97
98void dss_uninit_overlay_managers(void)
99{
100 kfree(managers);
101 managers = NULL;
102 num_managers = 0;
103}
104
105void dss_uninit_overlay_managers_sysfs(struct platform_device *pdev)
106{
107 int i;
108
109 for (i = 0; i < num_managers; ++i) {
110 struct omap_overlay_manager *mgr = &managers[i];
111
112 dss_manager_kobj_uninit(mgr);
113 }
114}
115
116int omap_dss_get_num_overlay_managers(void)
117{
118 return num_managers;
119}
120EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
121
122struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
123{
124 if (num >= num_managers)
125 return NULL;
126
127 return &managers[num];
128}
129EXPORT_SYMBOL(omap_dss_get_overlay_manager);
130
131int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
132 const struct omap_overlay_manager_info *info)
133{
134 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) {
135
136
137
138
139
140 if (info->partial_alpha_enabled && info->trans_enabled
141 && info->trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST) {
142 DSSERR("check_manager: illegal transparency key\n");
143 return -EINVAL;
144 }
145 }
146
147 return 0;
148}
149
150static int dss_mgr_check_zorder(struct omap_overlay_manager *mgr,
151 struct omap_overlay_info **overlay_infos)
152{
153 struct omap_overlay *ovl1, *ovl2;
154 struct omap_overlay_info *info1, *info2;
155
156 list_for_each_entry(ovl1, &mgr->overlays, list) {
157 info1 = overlay_infos[ovl1->id];
158
159 if (info1 == NULL)
160 continue;
161
162 list_for_each_entry(ovl2, &mgr->overlays, list) {
163 if (ovl1 == ovl2)
164 continue;
165
166 info2 = overlay_infos[ovl2->id];
167
168 if (info2 == NULL)
169 continue;
170
171 if (info1->zorder == info2->zorder) {
172 DSSERR("overlays %d and %d have the same "
173 "zorder %d\n",
174 ovl1->id, ovl2->id, info1->zorder);
175 return -EINVAL;
176 }
177 }
178 }
179
180 return 0;
181}
182
183int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
184 const struct omap_video_timings *timings)
185{
186 if (!dispc_mgr_timings_ok(mgr->id, timings)) {
187 DSSERR("check_manager: invalid timings\n");
188 return -EINVAL;
189 }
190
191 return 0;
192}
193
194static int dss_mgr_check_lcd_config(struct omap_overlay_manager *mgr,
195 const struct dss_lcd_mgr_config *config)
196{
197 struct dispc_clock_info cinfo = config->clock_info;
198 int dl = config->video_port_width;
199 bool stallmode = config->stallmode;
200 bool fifohandcheck = config->fifohandcheck;
201
202 if (cinfo.lck_div < 1 || cinfo.lck_div > 255)
203 return -EINVAL;
204
205 if (cinfo.pck_div < 1 || cinfo.pck_div > 255)
206 return -EINVAL;
207
208 if (dl != 12 && dl != 16 && dl != 18 && dl != 24)
209 return -EINVAL;
210
211
212 if (!stallmode && fifohandcheck)
213 return -EINVAL;
214
215
216
217
218
219
220
221 return 0;
222}
223
224int dss_mgr_check(struct omap_overlay_manager *mgr,
225 struct omap_overlay_manager_info *info,
226 const struct omap_video_timings *mgr_timings,
227 const struct dss_lcd_mgr_config *lcd_config,
228 struct omap_overlay_info **overlay_infos)
229{
230 struct omap_overlay *ovl;
231 int r;
232
233 if (dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) {
234 r = dss_mgr_check_zorder(mgr, overlay_infos);
235 if (r)
236 return r;
237 }
238
239 r = dss_mgr_check_timings(mgr, mgr_timings);
240 if (r)
241 return r;
242
243 r = dss_mgr_check_lcd_config(mgr, lcd_config);
244 if (r)
245 return r;
246
247 list_for_each_entry(ovl, &mgr->overlays, list) {
248 struct omap_overlay_info *oi;
249 int r;
250
251 oi = overlay_infos[ovl->id];
252
253 if (oi == NULL)
254 continue;
255
256 r = dss_ovl_check(ovl, oi, mgr_timings);
257 if (r)
258 return r;
259 }
260
261 return 0;
262}
263