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>
40 #include "dss_features.h"
43 struct platform_device
*pdev
;
45 const char *default_display_name
;
48 static char *def_disp_name
;
49 module_param_named(def_disp
, def_disp_name
, charp
, 0);
50 MODULE_PARM_DESC(def_disp
, "default display name");
52 const char *omapdss_get_default_display_name(void)
54 return core
.default_display_name
;
56 EXPORT_SYMBOL(omapdss_get_default_display_name
);
58 enum omapdss_version
omapdss_get_version(void)
60 struct omap_dss_board_info
*pdata
= core
.pdev
->dev
.platform_data
;
61 return pdata
->version
;
63 EXPORT_SYMBOL(omapdss_get_version
);
65 struct platform_device
*dss_get_core_pdev(void)
70 int dss_dsi_enable_pads(int dsi_id
, unsigned lane_mask
)
72 struct omap_dss_board_info
*board_data
= core
.pdev
->dev
.platform_data
;
74 if (!board_data
->dsi_enable_pads
)
77 return board_data
->dsi_enable_pads(dsi_id
, lane_mask
);
80 void dss_dsi_disable_pads(int dsi_id
, unsigned lane_mask
)
82 struct omap_dss_board_info
*board_data
= core
.pdev
->dev
.platform_data
;
84 if (!board_data
->dsi_disable_pads
)
87 return board_data
->dsi_disable_pads(dsi_id
, lane_mask
);
90 int dss_set_min_bus_tput(struct device
*dev
, unsigned long tput
)
92 struct omap_dss_board_info
*pdata
= core
.pdev
->dev
.platform_data
;
94 if (pdata
->set_min_bus_tput
)
95 return pdata
->set_min_bus_tput(dev
, tput
);
100 #if defined(CONFIG_OMAP2_DSS_DEBUGFS)
101 static int dss_debug_show(struct seq_file
*s
, void *unused
)
103 void (*func
)(struct seq_file
*) = s
->private;
108 static int dss_debug_open(struct inode
*inode
, struct file
*file
)
110 return single_open(file
, dss_debug_show
, inode
->i_private
);
113 static const struct file_operations dss_debug_fops
= {
114 .open
= dss_debug_open
,
117 .release
= single_release
,
120 static struct dentry
*dss_debugfs_dir
;
122 static int dss_initialize_debugfs(void)
124 dss_debugfs_dir
= debugfs_create_dir("omapdss", NULL
);
125 if (IS_ERR(dss_debugfs_dir
)) {
126 int err
= PTR_ERR(dss_debugfs_dir
);
127 dss_debugfs_dir
= NULL
;
131 debugfs_create_file("clk", S_IRUGO
, dss_debugfs_dir
,
132 &dss_debug_dump_clocks
, &dss_debug_fops
);
137 static void dss_uninitialize_debugfs(void)
140 debugfs_remove_recursive(dss_debugfs_dir
);
143 int dss_debugfs_create_file(const char *name
, void (*write
)(struct seq_file
*))
147 d
= debugfs_create_file(name
, S_IRUGO
, dss_debugfs_dir
,
148 write
, &dss_debug_fops
);
150 return PTR_ERR_OR_ZERO(d
);
152 #else /* CONFIG_OMAP2_DSS_DEBUGFS */
153 static inline int dss_initialize_debugfs(void)
157 static inline void dss_uninitialize_debugfs(void)
160 int dss_debugfs_create_file(const char *name
, void (*write
)(struct seq_file
*))
164 #endif /* CONFIG_OMAP2_DSS_DEBUGFS */
166 /* PLATFORM DEVICE */
168 static void dss_disable_all_devices(void)
170 struct omap_dss_device
*dssdev
= NULL
;
172 for_each_dss_dev(dssdev
) {
176 if (dssdev
->state
== OMAP_DSS_DISPLAY_ACTIVE
)
177 dssdev
->driver
->disable(dssdev
);
181 static int __init
omap_dss_probe(struct platform_device
*pdev
)
183 struct omap_dss_board_info
*pdata
= pdev
->dev
.platform_data
;
188 dss_features_init(omapdss_get_version());
190 r
= dss_initialize_debugfs();
195 core
.default_display_name
= def_disp_name
;
196 else if (pdata
->default_display_name
)
197 core
.default_display_name
= pdata
->default_display_name
;
206 static int omap_dss_remove(struct platform_device
*pdev
)
208 dss_uninitialize_debugfs();
213 static void omap_dss_shutdown(struct platform_device
*pdev
)
215 DSSDBG("shutdown\n");
216 dss_disable_all_devices();
219 static struct platform_driver omap_dss_driver
= {
220 .remove
= omap_dss_remove
,
221 .shutdown
= omap_dss_shutdown
,
228 static int (*dss_output_drv_reg_funcs
[])(void) __initdata
= {
229 dss_init_platform_driver
,
230 dispc_init_platform_driver
,
231 #ifdef CONFIG_OMAP2_DSS_DSI
232 dsi_init_platform_driver
,
234 #ifdef CONFIG_OMAP2_DSS_DPI
235 dpi_init_platform_driver
,
237 #ifdef CONFIG_OMAP2_DSS_SDI
238 sdi_init_platform_driver
,
240 #ifdef CONFIG_OMAP2_DSS_RFBI
241 rfbi_init_platform_driver
,
243 #ifdef CONFIG_OMAP2_DSS_VENC
244 venc_init_platform_driver
,
246 #ifdef CONFIG_OMAP4_DSS_HDMI
247 hdmi4_init_platform_driver
,
249 #ifdef CONFIG_OMAP5_DSS_HDMI
250 hdmi5_init_platform_driver
,
254 static void (*dss_output_drv_unreg_funcs
[])(void) = {
255 #ifdef CONFIG_OMAP5_DSS_HDMI
256 hdmi5_uninit_platform_driver
,
258 #ifdef CONFIG_OMAP4_DSS_HDMI
259 hdmi4_uninit_platform_driver
,
261 #ifdef CONFIG_OMAP2_DSS_VENC
262 venc_uninit_platform_driver
,
264 #ifdef CONFIG_OMAP2_DSS_RFBI
265 rfbi_uninit_platform_driver
,
267 #ifdef CONFIG_OMAP2_DSS_SDI
268 sdi_uninit_platform_driver
,
270 #ifdef CONFIG_OMAP2_DSS_DPI
271 dpi_uninit_platform_driver
,
273 #ifdef CONFIG_OMAP2_DSS_DSI
274 dsi_uninit_platform_driver
,
276 dispc_uninit_platform_driver
,
277 dss_uninit_platform_driver
,
280 static int __init
omap_dss_init(void)
285 r
= platform_driver_probe(&omap_dss_driver
, omap_dss_probe
);
289 for (i
= 0; i
< ARRAY_SIZE(dss_output_drv_reg_funcs
); ++i
) {
290 r
= dss_output_drv_reg_funcs
[i
]();
298 for (i
= ARRAY_SIZE(dss_output_drv_reg_funcs
) - i
;
299 i
< ARRAY_SIZE(dss_output_drv_reg_funcs
);
301 dss_output_drv_unreg_funcs
[i
]();
303 platform_driver_unregister(&omap_dss_driver
);
308 static void __exit
omap_dss_exit(void)
312 for (i
= 0; i
< ARRAY_SIZE(dss_output_drv_unreg_funcs
); ++i
)
313 dss_output_drv_unreg_funcs
[i
]();
315 platform_driver_unregister(&omap_dss_driver
);
318 module_init(omap_dss_init
);
319 module_exit(omap_dss_exit
);
321 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
322 MODULE_DESCRIPTION("OMAP2/3 Display Subsystem");
323 MODULE_LICENSE("GPL v2");