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559d6701 TV |
1 | /* |
2 | * linux/drivers/video/omap2/dss/core.c | |
3 | * | |
4 | * Copyright (C) 2009 Nokia Corporation | |
5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> | |
6 | * | |
7 | * Some code and ideas taken from drivers/video/omap/ driver | |
8 | * by Imre Deak. | |
9 | * | |
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. | |
13 | * | |
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 | |
17 | * more details. | |
18 | * | |
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/>. | |
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> | |
8a2cfea8 | 34 | #include <linux/regulator/consumer.h> |
736f29cd | 35 | #include <linux/suspend.h> |
5274484b | 36 | #include <linux/slab.h> |
559d6701 | 37 | |
a0b38cc4 | 38 | #include <video/omapdss.h> |
559d6701 TV |
39 | |
40 | #include "dss.h" | |
a0acb557 | 41 | #include "dss_features.h" |
559d6701 TV |
42 | |
43 | static struct { | |
44 | struct platform_device *pdev; | |
8a2cfea8 | 45 | |
c018c673 | 46 | const char *default_display_name; |
559d6701 TV |
47 | } core; |
48 | ||
559d6701 TV |
49 | static char *def_disp_name; |
50 | module_param_named(def_disp, def_disp_name, charp, 0); | |
ac425ed5 | 51 | MODULE_PARM_DESC(def_disp, "default display name"); |
559d6701 | 52 | |
2bbcce5e | 53 | const char *omapdss_get_default_display_name(void) |
6a03fca9 TV |
54 | { |
55 | return core.default_display_name; | |
56 | } | |
2bbcce5e | 57 | EXPORT_SYMBOL(omapdss_get_default_display_name); |
6a03fca9 | 58 | |
b2c7d54f TV |
59 | enum omapdss_version omapdss_get_version(void) |
60 | { | |
61 | struct omap_dss_board_info *pdata = core.pdev->dev.platform_data; | |
62 | return pdata->version; | |
63 | } | |
64 | EXPORT_SYMBOL(omapdss_get_version); | |
65 | ||
8f46efad TV |
66 | struct platform_device *dss_get_core_pdev(void) |
67 | { | |
68 | return core.pdev; | |
69 | } | |
70 | ||
00928eaf TV |
71 | int 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 | ||
81 | void 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 | ||
da6c5687 | 85 | if (!board_data->dsi_disable_pads) |
00928eaf TV |
86 | return; |
87 | ||
88 | return board_data->dsi_disable_pads(dsi_id, lane_mask); | |
89 | } | |
90 | ||
a8081d31 TV |
91 | int 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 | ||
1b3bcb33 | 101 | #if defined(CONFIG_OMAP2_DSS_DEBUGFS) |
559d6701 TV |
102 | static 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 | ||
109 | static int dss_debug_open(struct inode *inode, struct file *file) | |
110 | { | |
111 | return single_open(file, dss_debug_show, inode->i_private); | |
112 | } | |
113 | ||
114 | static 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 | ||
121 | static struct dentry *dss_debugfs_dir; | |
122 | ||
123 | static 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 | ||
559d6701 TV |
135 | return 0; |
136 | } | |
137 | ||
138 | static void dss_uninitialize_debugfs(void) | |
139 | { | |
140 | if (dss_debugfs_dir) | |
141 | debugfs_remove_recursive(dss_debugfs_dir); | |
142 | } | |
e40402cf TV |
143 | |
144 | int 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 | ||
8c6ffba0 | 151 | return PTR_ERR_OR_ZERO(d); |
e40402cf | 152 | } |
1b3bcb33 | 153 | #else /* CONFIG_OMAP2_DSS_DEBUGFS */ |
368a148e JN |
154 | static inline int dss_initialize_debugfs(void) |
155 | { | |
156 | return 0; | |
157 | } | |
158 | static inline void dss_uninitialize_debugfs(void) | |
159 | { | |
160 | } | |
0e9a126e | 161 | int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *)) |
e40402cf TV |
162 | { |
163 | return 0; | |
164 | } | |
1b3bcb33 | 165 | #endif /* CONFIG_OMAP2_DSS_DEBUGFS */ |
559d6701 TV |
166 | |
167 | /* PLATFORM DEVICE */ | |
736f29cd | 168 | |
18840d3f TV |
169 | static void dss_disable_all_devices(void) |
170 | { | |
171 | struct omap_dss_device *dssdev = NULL; | |
172 | ||
173 | for_each_dss_dev(dssdev) { | |
174 | if (!dssdev->driver) | |
175 | continue; | |
176 | ||
177 | if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) | |
178 | dssdev->driver->disable(dssdev); | |
179 | } | |
180 | } | |
181 | ||
6e7e8f06 | 182 | static int __init omap_dss_probe(struct platform_device *pdev) |
559d6701 TV |
183 | { |
184 | struct omap_dss_board_info *pdata = pdev->dev.platform_data; | |
559d6701 | 185 | int r; |
559d6701 TV |
186 | |
187 | core.pdev = pdev; | |
188 | ||
b2c7d54f | 189 | dss_features_init(omapdss_get_version()); |
a0acb557 | 190 | |
559d6701 TV |
191 | r = dss_initialize_debugfs(); |
192 | if (r) | |
fce064cb | 193 | goto err_debugfs; |
559d6701 | 194 | |
c018c673 TV |
195 | if (def_disp_name) |
196 | core.default_display_name = def_disp_name; | |
0a200126 TV |
197 | else if (pdata->default_display_name) |
198 | core.default_display_name = pdata->default_display_name; | |
c018c673 TV |
199 | else if (pdata->default_device) |
200 | core.default_display_name = pdata->default_device->name; | |
201 | ||
559d6701 TV |
202 | return 0; |
203 | ||
fce064cb | 204 | err_debugfs: |
fce064cb | 205 | |
559d6701 TV |
206 | return r; |
207 | } | |
208 | ||
209 | static int omap_dss_remove(struct platform_device *pdev) | |
210 | { | |
559d6701 | 211 | dss_uninitialize_debugfs(); |
559d6701 | 212 | |
559d6701 TV |
213 | return 0; |
214 | } | |
215 | ||
216 | static void omap_dss_shutdown(struct platform_device *pdev) | |
217 | { | |
218 | DSSDBG("shutdown\n"); | |
219 | dss_disable_all_devices(); | |
220 | } | |
221 | ||
559d6701 | 222 | static struct platform_driver omap_dss_driver = { |
559d6701 TV |
223 | .remove = omap_dss_remove, |
224 | .shutdown = omap_dss_shutdown, | |
559d6701 TV |
225 | .driver = { |
226 | .name = "omapdss", | |
559d6701 TV |
227 | }, |
228 | }; | |
229 | ||
559d6701 | 230 | /* INIT */ |
461395c4 | 231 | static int (*dss_output_drv_reg_funcs[])(void) __initdata = { |
ad4eaef7 TV |
232 | dss_init_platform_driver, |
233 | dispc_init_platform_driver, | |
046bc575 TV |
234 | #ifdef CONFIG_OMAP2_DSS_DSI |
235 | dsi_init_platform_driver, | |
236 | #endif | |
461395c4 TV |
237 | #ifdef CONFIG_OMAP2_DSS_DPI |
238 | dpi_init_platform_driver, | |
239 | #endif | |
240 | #ifdef CONFIG_OMAP2_DSS_SDI | |
241 | sdi_init_platform_driver, | |
242 | #endif | |
243 | #ifdef CONFIG_OMAP2_DSS_RFBI | |
244 | rfbi_init_platform_driver, | |
245 | #endif | |
246 | #ifdef CONFIG_OMAP2_DSS_VENC | |
247 | venc_init_platform_driver, | |
248 | #endif | |
461395c4 | 249 | #ifdef CONFIG_OMAP4_DSS_HDMI |
ef26958a | 250 | hdmi4_init_platform_driver, |
461395c4 | 251 | #endif |
f5bab222 TV |
252 | #ifdef CONFIG_OMAP5_DSS_HDMI |
253 | hdmi5_init_platform_driver, | |
254 | #endif | |
461395c4 TV |
255 | }; |
256 | ||
ad4eaef7 | 257 | static void (*dss_output_drv_unreg_funcs[])(void) = { |
606ae486 TV |
258 | #ifdef CONFIG_OMAP5_DSS_HDMI |
259 | hdmi5_uninit_platform_driver, | |
046bc575 | 260 | #endif |
606ae486 TV |
261 | #ifdef CONFIG_OMAP4_DSS_HDMI |
262 | hdmi4_uninit_platform_driver, | |
461395c4 | 263 | #endif |
606ae486 TV |
264 | #ifdef CONFIG_OMAP2_DSS_VENC |
265 | venc_uninit_platform_driver, | |
461395c4 TV |
266 | #endif |
267 | #ifdef CONFIG_OMAP2_DSS_RFBI | |
268 | rfbi_uninit_platform_driver, | |
269 | #endif | |
606ae486 TV |
270 | #ifdef CONFIG_OMAP2_DSS_SDI |
271 | sdi_uninit_platform_driver, | |
461395c4 | 272 | #endif |
606ae486 TV |
273 | #ifdef CONFIG_OMAP2_DSS_DPI |
274 | dpi_uninit_platform_driver, | |
461395c4 | 275 | #endif |
606ae486 TV |
276 | #ifdef CONFIG_OMAP2_DSS_DSI |
277 | dsi_uninit_platform_driver, | |
f5bab222 | 278 | #endif |
ad4eaef7 TV |
279 | dispc_uninit_platform_driver, |
280 | dss_uninit_platform_driver, | |
461395c4 TV |
281 | }; |
282 | ||
b3864299 | 283 | static int __init omap_dss_init(void) |
dc7e57fa TV |
284 | { |
285 | int r; | |
461395c4 | 286 | int i; |
dc7e57fa | 287 | |
11436e1d | 288 | r = platform_driver_probe(&omap_dss_driver, omap_dss_probe); |
dc7e57fa TV |
289 | if (r) |
290 | return r; | |
291 | ||
461395c4 TV |
292 | for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) { |
293 | r = dss_output_drv_reg_funcs[i](); | |
ad4eaef7 TV |
294 | if (r) |
295 | goto err_reg; | |
dc7e57fa TV |
296 | } |
297 | ||
298 | return 0; | |
299 | ||
ad4eaef7 TV |
300 | err_reg: |
301 | for (i = ARRAY_SIZE(dss_output_drv_reg_funcs) - i; | |
302 | i < ARRAY_SIZE(dss_output_drv_reg_funcs); | |
303 | ++i) | |
304 | dss_output_drv_unreg_funcs[i](); | |
305 | ||
dc7e57fa TV |
306 | platform_driver_unregister(&omap_dss_driver); |
307 | ||
308 | return r; | |
309 | } | |
310 | ||
b3864299 | 311 | static void __exit omap_dss_exit(void) |
dc7e57fa | 312 | { |
461395c4 TV |
313 | int i; |
314 | ||
ad4eaef7 TV |
315 | for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i) |
316 | dss_output_drv_unreg_funcs[i](); | |
dc7e57fa TV |
317 | |
318 | platform_driver_unregister(&omap_dss_driver); | |
319 | } | |
320 | ||
559d6701 TV |
321 | module_init(omap_dss_init); |
322 | module_exit(omap_dss_exit); | |
559d6701 TV |
323 | |
324 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); | |
325 | MODULE_DESCRIPTION("OMAP2/3 Display Subsystem"); | |
326 | MODULE_LICENSE("GPL v2"); | |
327 |