2 * linux/drivers/video/omap2/dss/core.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 "CORE"
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>
33 #include <linux/device.h>
34 #include <linux/regulator/consumer.h>
35 #include <linux/suspend.h>
36 #include <linux/slab.h>
38 #include <video/omapfb_dss.h>
41 #include "dss_features.h"
44 struct platform_device
*pdev
;
46 const char *default_display_name
;
49 static char *def_disp_name
;
50 module_param_named(def_disp
, def_disp_name
, charp
, 0);
51 MODULE_PARM_DESC(def_disp
, "default display name");
53 const char *omapdss_get_default_display_name(void)
55 return core
.default_display_name
;
57 EXPORT_SYMBOL(omapdss_get_default_display_name
);
59 enum omapdss_version
omapdss_get_version(void)
61 struct omap_dss_board_info
*pdata
= core
.pdev
->dev
.platform_data
;
62 return pdata
->version
;
64 EXPORT_SYMBOL(omapdss_get_version
);
66 struct platform_device
*dss_get_core_pdev(void)
71 int dss_dsi_enable_pads(int dsi_id
, unsigned lane_mask
)
73 struct omap_dss_board_info
*board_data
= core
.pdev
->dev
.platform_data
;
75 if (!board_data
->dsi_enable_pads
)
78 return board_data
->dsi_enable_pads(dsi_id
, lane_mask
);
81 void dss_dsi_disable_pads(int dsi_id
, unsigned lane_mask
)
83 struct omap_dss_board_info
*board_data
= core
.pdev
->dev
.platform_data
;
85 if (!board_data
->dsi_disable_pads
)
88 return board_data
->dsi_disable_pads(dsi_id
, lane_mask
);
91 int dss_set_min_bus_tput(struct device
*dev
, unsigned long tput
)
93 struct omap_dss_board_info
*pdata
= core
.pdev
->dev
.platform_data
;
95 if (pdata
->set_min_bus_tput
)
96 return pdata
->set_min_bus_tput(dev
, tput
);
101 #if defined(CONFIG_FB_OMAP2_DSS_DEBUGFS)
102 static int dss_debug_show(struct seq_file
*s
, void *unused
)
104 void (*func
)(struct seq_file
*) = s
->private;
109 static int dss_debug_open(struct inode
*inode
, struct file
*file
)
111 return single_open(file
, dss_debug_show
, inode
->i_private
);
114 static const struct file_operations dss_debug_fops
= {
115 .open
= dss_debug_open
,
118 .release
= single_release
,
121 static struct dentry
*dss_debugfs_dir
;
123 static int dss_initialize_debugfs(void)
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
;
132 debugfs_create_file("clk", S_IRUGO
, dss_debugfs_dir
,
133 &dss_debug_dump_clocks
, &dss_debug_fops
);
138 static void dss_uninitialize_debugfs(void)
141 debugfs_remove_recursive(dss_debugfs_dir
);
144 int dss_debugfs_create_file(const char *name
, void (*write
)(struct seq_file
*))
148 d
= debugfs_create_file(name
, S_IRUGO
, dss_debugfs_dir
,
149 write
, &dss_debug_fops
);
151 return PTR_ERR_OR_ZERO(d
);
153 #else /* CONFIG_FB_OMAP2_DSS_DEBUGFS */
154 static inline int dss_initialize_debugfs(void)
158 static inline void dss_uninitialize_debugfs(void)
161 int dss_debugfs_create_file(const char *name
, void (*write
)(struct seq_file
*))
165 #endif /* CONFIG_FB_OMAP2_DSS_DEBUGFS */
167 /* PLATFORM DEVICE */
168 static int omap_dss_pm_notif(struct notifier_block
*b
, unsigned long v
, void *d
)
170 DSSDBG("pm notif %lu\n", 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();
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();
190 static struct notifier_block omap_dss_pm_notif_block
= {
191 .notifier_call
= omap_dss_pm_notif
,
194 static int __init
omap_dss_probe(struct platform_device
*pdev
)
200 dss_features_init(omapdss_get_version());
202 r
= dss_initialize_debugfs();
207 core
.default_display_name
= def_disp_name
;
209 register_pm_notifier(&omap_dss_pm_notif_block
);
218 static int omap_dss_remove(struct platform_device
*pdev
)
220 unregister_pm_notifier(&omap_dss_pm_notif_block
);
222 dss_uninitialize_debugfs();
227 static void omap_dss_shutdown(struct platform_device
*pdev
)
229 DSSDBG("shutdown\n");
230 dss_disable_all_devices();
233 static struct platform_driver omap_dss_driver
= {
234 .remove
= omap_dss_remove
,
235 .shutdown
= omap_dss_shutdown
,
242 static 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
,
248 #ifdef CONFIG_FB_OMAP2_DSS_DPI
249 dpi_init_platform_driver
,
251 #ifdef CONFIG_FB_OMAP2_DSS_SDI
252 sdi_init_platform_driver
,
254 #ifdef CONFIG_FB_OMAP2_DSS_RFBI
255 rfbi_init_platform_driver
,
257 #ifdef CONFIG_FB_OMAP2_DSS_VENC
258 venc_init_platform_driver
,
260 #ifdef CONFIG_FB_OMAP4_DSS_HDMI
261 hdmi4_init_platform_driver
,
263 #ifdef CONFIG_FB_OMAP5_DSS_HDMI
264 hdmi5_init_platform_driver
,
268 static void (*dss_output_drv_unreg_funcs
[])(void) = {
269 #ifdef CONFIG_FB_OMAP5_DSS_HDMI
270 hdmi5_uninit_platform_driver
,
272 #ifdef CONFIG_FB_OMAP4_DSS_HDMI
273 hdmi4_uninit_platform_driver
,
275 #ifdef CONFIG_FB_OMAP2_DSS_VENC
276 venc_uninit_platform_driver
,
278 #ifdef CONFIG_FB_OMAP2_DSS_RFBI
279 rfbi_uninit_platform_driver
,
281 #ifdef CONFIG_FB_OMAP2_DSS_SDI
282 sdi_uninit_platform_driver
,
284 #ifdef CONFIG_FB_OMAP2_DSS_DPI
285 dpi_uninit_platform_driver
,
287 #ifdef CONFIG_FB_OMAP2_DSS_DSI
288 dsi_uninit_platform_driver
,
290 dispc_uninit_platform_driver
,
291 dss_uninit_platform_driver
,
294 static int __init
omap_dss_init(void)
299 r
= platform_driver_probe(&omap_dss_driver
, omap_dss_probe
);
303 for (i
= 0; i
< ARRAY_SIZE(dss_output_drv_reg_funcs
); ++i
) {
304 r
= dss_output_drv_reg_funcs
[i
]();
312 for (i
= ARRAY_SIZE(dss_output_drv_reg_funcs
) - i
;
313 i
< ARRAY_SIZE(dss_output_drv_reg_funcs
);
315 dss_output_drv_unreg_funcs
[i
]();
317 platform_driver_unregister(&omap_dss_driver
);
322 static void __exit
omap_dss_exit(void)
326 for (i
= 0; i
< ARRAY_SIZE(dss_output_drv_unreg_funcs
); ++i
)
327 dss_output_drv_unreg_funcs
[i
]();
329 platform_driver_unregister(&omap_dss_driver
);
332 module_init(omap_dss_init
);
333 module_exit(omap_dss_exit
);
335 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
336 MODULE_DESCRIPTION("OMAP2/3 Display Subsystem");
337 MODULE_LICENSE("GPL v2");