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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/omapdss.h>
32
33#include "dss.h"
34#include "dss_features.h"
35
36static int num_managers;
37static struct omap_overlay_manager *managers;
38
39static inline struct omap_dss_device *dss_mgr_get_device(struct omap_overlay_manager *mgr)
40{
41 return mgr->output ? mgr->output->device : NULL;
42}
43
44static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr)
45{
46 unsigned long timeout = msecs_to_jiffies(500);
47 struct omap_dss_device *dssdev = mgr->get_device(mgr);
48 u32 irq;
49 int r;
50
51 r = dispc_runtime_get();
52 if (r)
53 return r;
54
55 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC)
56 irq = DISPC_IRQ_EVSYNC_ODD;
57 else if (dssdev->type == OMAP_DISPLAY_TYPE_HDMI)
58 irq = DISPC_IRQ_EVSYNC_EVEN;
59 else
60 irq = dispc_mgr_get_vsync_irq(mgr->id);
61
62 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
63
64 dispc_runtime_put();
65
66 return r;
67}
68
69int dss_init_overlay_managers(struct platform_device *pdev)
70{
71 int i, r;
72
73 num_managers = dss_feat_get_num_mgrs();
74
75 managers = kzalloc(sizeof(struct omap_overlay_manager) * num_managers,
76 GFP_KERNEL);
77
78 BUG_ON(managers == NULL);
79
80 for (i = 0; i < num_managers; ++i) {
81 struct omap_overlay_manager *mgr = &managers[i];
82
83 switch (i) {
84 case 0:
85 mgr->name = "lcd";
86 mgr->id = OMAP_DSS_CHANNEL_LCD;
87 break;
88 case 1:
89 mgr->name = "tv";
90 mgr->id = OMAP_DSS_CHANNEL_DIGIT;
91 break;
92 case 2:
93 mgr->name = "lcd2";
94 mgr->id = OMAP_DSS_CHANNEL_LCD2;
95 break;
96 case 3:
97 mgr->name = "lcd3";
98 mgr->id = OMAP_DSS_CHANNEL_LCD3;
99 break;
100 }
101
102 mgr->set_output = &dss_mgr_set_output;
103 mgr->unset_output = &dss_mgr_unset_output;
104 mgr->apply = &omap_dss_mgr_apply;
105 mgr->set_manager_info = &dss_mgr_set_info;
106 mgr->get_manager_info = &dss_mgr_get_info;
107 mgr->wait_for_go = &dss_mgr_wait_for_go;
108 mgr->wait_for_vsync = &dss_mgr_wait_for_vsync;
109 mgr->get_device = &dss_mgr_get_device;
110
111 mgr->caps = 0;
112 mgr->supported_displays =
113 dss_feat_get_supported_displays(mgr->id);
114 mgr->supported_outputs =
115 dss_feat_get_supported_outputs(mgr->id);
116
117 INIT_LIST_HEAD(&mgr->overlays);
118
119 r = dss_manager_kobj_init(mgr, pdev);
120 if (r)
121 DSSERR("failed to create sysfs file\n");
122 }
123
124 return 0;
125}
126
127void dss_uninit_overlay_managers(struct platform_device *pdev)
128{
129 int i;
130
131 for (i = 0; i < num_managers; ++i) {
132 struct omap_overlay_manager *mgr = &managers[i];
133 dss_manager_kobj_uninit(mgr);
134 }
135
136 kfree(managers);
137 managers = NULL;
138 num_managers = 0;
139}
140
141int omap_dss_get_num_overlay_managers(void)
142{
143 return num_managers;
144}
145EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
146
147struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
148{
149 if (num >= num_managers)
150 return NULL;
151
152 return &managers[num];
153}
154EXPORT_SYMBOL(omap_dss_get_overlay_manager);
155
156int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
157 const struct omap_overlay_manager_info *info)
158{
159 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) {
160
161
162
163
164
165 if (info->partial_alpha_enabled && info->trans_enabled
166 && info->trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST) {
167 DSSERR("check_manager: illegal transparency key\n");
168 return -EINVAL;
169 }
170 }
171
172 return 0;
173}
174
175static int dss_mgr_check_zorder(struct omap_overlay_manager *mgr,
176 struct omap_overlay_info **overlay_infos)
177{
178 struct omap_overlay *ovl1, *ovl2;
179 struct omap_overlay_info *info1, *info2;
180
181 list_for_each_entry(ovl1, &mgr->overlays, list) {
182 info1 = overlay_infos[ovl1->id];
183
184 if (info1 == NULL)
185 continue;
186
187 list_for_each_entry(ovl2, &mgr->overlays, list) {
188 if (ovl1 == ovl2)
189 continue;
190
191 info2 = overlay_infos[ovl2->id];
192
193 if (info2 == NULL)
194 continue;
195
196 if (info1->zorder == info2->zorder) {
197 DSSERR("overlays %d and %d have the same "
198 "zorder %d\n",
199 ovl1->id, ovl2->id, info1->zorder);
200 return -EINVAL;
201 }
202 }
203 }
204
205 return 0;
206}
207
208int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
209 const struct omap_video_timings *timings)
210{
211 if (!dispc_mgr_timings_ok(mgr->id, timings)) {
212 DSSERR("check_manager: invalid timings\n");
213 return -EINVAL;
214 }
215
216 return 0;
217}
218
219static int dss_mgr_check_lcd_config(struct omap_overlay_manager *mgr,
220 const struct dss_lcd_mgr_config *config)
221{
222 struct dispc_clock_info cinfo = config->clock_info;
223 int dl = config->video_port_width;
224 bool stallmode = config->stallmode;
225 bool fifohandcheck = config->fifohandcheck;
226
227 if (cinfo.lck_div < 1 || cinfo.lck_div > 255)
228 return -EINVAL;
229
230 if (cinfo.pck_div < 1 || cinfo.pck_div > 255)
231 return -EINVAL;
232
233 if (dl != 12 && dl != 16 && dl != 18 && dl != 24)
234 return -EINVAL;
235
236
237 if (stallmode == false && fifohandcheck == true)
238 return -EINVAL;
239
240
241
242
243
244
245
246 return 0;
247}
248
249int dss_mgr_check(struct omap_overlay_manager *mgr,
250 struct omap_overlay_manager_info *info,
251 const struct omap_video_timings *mgr_timings,
252 const struct dss_lcd_mgr_config *lcd_config,
253 struct omap_overlay_info **overlay_infos)
254{
255 struct omap_overlay *ovl;
256 int r;
257
258 if (dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) {
259 r = dss_mgr_check_zorder(mgr, overlay_infos);
260 if (r)
261 return r;
262 }
263
264 r = dss_mgr_check_timings(mgr, mgr_timings);
265 if (r)
266 return r;
267
268 r = dss_mgr_check_lcd_config(mgr, lcd_config);
269 if (r)
270 return r;
271
272 list_for_each_entry(ovl, &mgr->overlays, list) {
273 struct omap_overlay_info *oi;
274 int r;
275
276 oi = overlay_infos[ovl->id];
277
278 if (oi == NULL)
279 continue;
280
281 r = dss_ovl_check(ovl, oi, mgr_timings);
282 if (r)
283 return r;
284 }
285
286 return 0;
287}
288
