1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23#define DSS_SUBSYS_NAME "CORE"
24
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/clk.h>
28#include <linux/err.h>
29#include <linux/platform_device.h>
30#include <linux/seq_file.h>
31#include <linux/debugfs.h>
32#include <linux/io.h>
33#include <linux/device.h>
34#include <linux/regulator/consumer.h>
35#include <linux/suspend.h>
36#include <linux/slab.h>
37
38#include <video/omapfb_dss.h>
39
40#include "dss.h"
41#include "dss_features.h"
42
43static struct {
44 struct platform_device *pdev;
45
46 const char *default_display_name;
47} core;
48
49static char *def_disp_name;
50module_param_named(def_disp, def_disp_name, charp, 0);
51MODULE_PARM_DESC(def_disp, "default display name");
52
53const char *omapdss_get_default_display_name(void)
54{
55 return core.default_display_name;
56}
57EXPORT_SYMBOL(omapdss_get_default_display_name);
58
59enum omapdss_version omapdss_get_version(void)
60{
61 struct omap_dss_board_info *pdata = core.pdev->dev.platform_data;
62 return pdata->version;
63}
64EXPORT_SYMBOL(omapdss_get_version);
65
66struct platform_device *dss_get_core_pdev(void)
67{
68 return core.pdev;
69}
70
71int dss_dsi_enable_pads(int dsi_id, unsigned lane_mask)
72{
73 struct omap_dss_board_info *board_data = core.pdev->dev.platform_data;
74
75 if (!board_data->dsi_enable_pads)
76 return -ENOENT;
77
78 return board_data->dsi_enable_pads(dsi_id, lane_mask);
79}
80
81void dss_dsi_disable_pads(int dsi_id, unsigned lane_mask)
82{
83 struct omap_dss_board_info *board_data = core.pdev->dev.platform_data;
84
85 if (!board_data->dsi_disable_pads)
86 return;
87
88 return board_data->dsi_disable_pads(dsi_id, lane_mask);
89}
90
91int dss_set_min_bus_tput(struct device *dev, unsigned long tput)
92{
93 struct omap_dss_board_info *pdata = core.pdev->dev.platform_data;
94
95 if (pdata->set_min_bus_tput)
96 return pdata->set_min_bus_tput(dev, tput);
97 else
98 return 0;
99}
100
101#if defined(CONFIG_FB_OMAP2_DSS_DEBUGFS)
102static int dss_debug_show(struct seq_file *s, void *unused)
103{
104 void (*func)(struct seq_file *) = s->private;
105 func(s);
106 return 0;
107}
108
109static int dss_debug_open(struct inode *inode, struct file *file)
110{
111 return single_open(file, dss_debug_show, inode->i_private);
112}
113
114static const struct file_operations dss_debug_fops = {
115 .open = dss_debug_open,
116 .read = seq_read,
117 .llseek = seq_lseek,
118 .release = single_release,
119};
120
121static struct dentry *dss_debugfs_dir;
122
123static int dss_initialize_debugfs(void)
124{
125 dss_debugfs_dir = debugfs_create_dir("omapdss", NULL);
126 if (IS_ERR(dss_debugfs_dir)) {
127 int err = PTR_ERR(dss_debugfs_dir);
128 dss_debugfs_dir = NULL;
129 return err;
130 }
131
132 debugfs_create_file("clk", S_IRUGO, dss_debugfs_dir,
133 &dss_debug_dump_clocks, &dss_debug_fops);
134
135 return 0;
136}
137
138static void dss_uninitialize_debugfs(void)
139{
140 if (dss_debugfs_dir)
141 debugfs_remove_recursive(dss_debugfs_dir);
142}
143
144int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *))
145{
146 struct dentry *d;
147
148 d = debugfs_create_file(name, S_IRUGO, dss_debugfs_dir,
149 write, &dss_debug_fops);
150
151 return PTR_ERR_OR_ZERO(d);
152}
153#else
154static inline int dss_initialize_debugfs(void)
155{
156 return 0;
157}
158static inline void dss_uninitialize_debugfs(void)
159{
160}
161int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *))
162{
163 return 0;
164}
165#endif
166
167
168static int omap_dss_pm_notif(struct notifier_block *b, unsigned long v, void *d)
169{
170 DSSDBG("pm notif %lu\n", v);
171
172 switch (v) {
173 case PM_SUSPEND_PREPARE:
174 case PM_HIBERNATION_PREPARE:
175 case PM_RESTORE_PREPARE:
176 DSSDBG("suspending displays\n");
177 return dss_suspend_all_devices();
178
179 case PM_POST_SUSPEND:
180 case PM_POST_HIBERNATION:
181 case PM_POST_RESTORE:
182 DSSDBG("resuming displays\n");
183 return dss_resume_all_devices();
184
185 default:
186 return 0;
187 }
188}
189
190static struct notifier_block omap_dss_pm_notif_block = {
191 .notifier_call = omap_dss_pm_notif,
192};
193
194static int __init omap_dss_probe(struct platform_device *pdev)
195{
196 int r;
197
198 core.pdev = pdev;
199
200 dss_features_init(omapdss_get_version());
201
202 r = dss_initialize_debugfs();
203 if (r)
204 goto err_debugfs;
205
206 if (def_disp_name)
207 core.default_display_name = def_disp_name;
208
209 register_pm_notifier(&omap_dss_pm_notif_block);
210
211 return 0;
212
213err_debugfs:
214
215 return r;
216}
217
218static int omap_dss_remove(struct platform_device *pdev)
219{
220 unregister_pm_notifier(&omap_dss_pm_notif_block);
221
222 dss_uninitialize_debugfs();
223
224 return 0;
225}
226
227static void omap_dss_shutdown(struct platform_device *pdev)
228{
229 DSSDBG("shutdown\n");
230 dss_disable_all_devices();
231}
232
233static struct platform_driver omap_dss_driver = {
234 .remove = omap_dss_remove,
235 .shutdown = omap_dss_shutdown,
236 .driver = {
237 .name = "omapdss",
238 },
239};
240
241
242static int (*dss_output_drv_reg_funcs[])(void) __initdata = {
243 dss_init_platform_driver,
244 dispc_init_platform_driver,
245#ifdef CONFIG_FB_OMAP2_DSS_DSI
246 dsi_init_platform_driver,
247#endif
248#ifdef CONFIG_FB_OMAP2_DSS_DPI
249 dpi_init_platform_driver,
250#endif
251#ifdef CONFIG_FB_OMAP2_DSS_SDI
252 sdi_init_platform_driver,
253#endif
254#ifdef CONFIG_FB_OMAP2_DSS_RFBI
255 rfbi_init_platform_driver,
256#endif
257#ifdef CONFIG_FB_OMAP2_DSS_VENC
258 venc_init_platform_driver,
259#endif
260#ifdef CONFIG_FB_OMAP4_DSS_HDMI
261 hdmi4_init_platform_driver,
262#endif
263#ifdef CONFIG_FB_OMAP5_DSS_HDMI
264 hdmi5_init_platform_driver,
265#endif
266};
267
268static void (*dss_output_drv_unreg_funcs[])(void) = {
269#ifdef CONFIG_FB_OMAP5_DSS_HDMI
270 hdmi5_uninit_platform_driver,
271#endif
272#ifdef CONFIG_FB_OMAP4_DSS_HDMI
273 hdmi4_uninit_platform_driver,
274#endif
275#ifdef CONFIG_FB_OMAP2_DSS_VENC
276 venc_uninit_platform_driver,
277#endif
278#ifdef CONFIG_FB_OMAP2_DSS_RFBI
279 rfbi_uninit_platform_driver,
280#endif
281#ifdef CONFIG_FB_OMAP2_DSS_SDI
282 sdi_uninit_platform_driver,
283#endif
284#ifdef CONFIG_FB_OMAP2_DSS_DPI
285 dpi_uninit_platform_driver,
286#endif
287#ifdef CONFIG_FB_OMAP2_DSS_DSI
288 dsi_uninit_platform_driver,
289#endif
290 dispc_uninit_platform_driver,
291 dss_uninit_platform_driver,
292};
293
294static int __init omap_dss_init(void)
295{
296 int r;
297 int i;
298
299 r = platform_driver_probe(&omap_dss_driver, omap_dss_probe);
300 if (r)
301 return r;
302
303 for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) {
304 r = dss_output_drv_reg_funcs[i]();
305 if (r)
306 goto err_reg;
307 }
308
309 return 0;
310
311err_reg:
312 for (i = ARRAY_SIZE(dss_output_drv_reg_funcs) - i;
313 i < ARRAY_SIZE(dss_output_drv_reg_funcs);
314 ++i)
315 dss_output_drv_unreg_funcs[i]();
316
317 platform_driver_unregister(&omap_dss_driver);
318
319 return r;
320}
321
322static void __exit omap_dss_exit(void)
323{
324 int i;
325
326 for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i)
327 dss_output_drv_unreg_funcs[i]();
328
329 platform_driver_unregister(&omap_dss_driver);
330}
331
332module_init(omap_dss_init);
333module_exit(omap_dss_exit);
334
335MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
336MODULE_DESCRIPTION("OMAP2/3 Display Subsystem");
337MODULE_LICENSE("GPL v2");
338
339
