1 /* drivers/video/msm_fb/mddi_client_dummy.c
2 *
3 * Support for "dummy" mddi client devices which require no
4 * special initialization code.
5 *
6 * Copyright (C) 2007 Google Incorporated
7 *
8 * This software is licensed under the terms of the GNU General Public
9 * License version 2, as published by the Free Software Foundation, and
10 * may be copied, distributed, and modified under those terms.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18 #include <linux/slab.h>
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/platform_device.h>
22
23 #include <mach/msm_fb.h>
24
25 struct panel_info {
26 struct platform_device pdev;
27 struct msm_panel_data panel_data;
28 };
29
mddi_dummy_suspend(struct msm_panel_data * panel_data)30 static int mddi_dummy_suspend(struct msm_panel_data *panel_data)
31 {
32 return 0;
33 }
34
mddi_dummy_resume(struct msm_panel_data * panel_data)35 static int mddi_dummy_resume(struct msm_panel_data *panel_data)
36 {
37 return 0;
38 }
39
mddi_dummy_blank(struct msm_panel_data * panel_data)40 static int mddi_dummy_blank(struct msm_panel_data *panel_data)
41 {
42 return 0;
43 }
44
mddi_dummy_unblank(struct msm_panel_data * panel_data)45 static int mddi_dummy_unblank(struct msm_panel_data *panel_data)
46 {
47 return 0;
48 }
49
mddi_dummy_probe(struct platform_device * pdev)50 static int mddi_dummy_probe(struct platform_device *pdev)
51 {
52 struct msm_mddi_client_data *client_data = pdev->dev.platform_data;
53 struct panel_info *panel =
54 kzalloc(sizeof(struct panel_info), GFP_KERNEL);
55 int ret;
56 if (!panel)
57 return -ENOMEM;
58 platform_set_drvdata(pdev, panel);
59 panel->panel_data.suspend = mddi_dummy_suspend;
60 panel->panel_data.resume = mddi_dummy_resume;
61 panel->panel_data.blank = mddi_dummy_blank;
62 panel->panel_data.unblank = mddi_dummy_unblank;
63 panel->panel_data.caps = MSMFB_CAP_PARTIAL_UPDATES;
64 panel->pdev.name = "msm_panel";
65 panel->pdev.id = pdev->id;
66 platform_device_add_resources(&panel->pdev,
67 client_data->fb_resource, 1);
68 panel->panel_data.fb_data = client_data->private_client_data;
69 panel->pdev.dev.platform_data = &panel->panel_data;
70 ret = platform_device_register(&panel->pdev);
71 if (ret) {
72 kfree(panel);
73 return ret;
74 }
75 return 0;
76 }
77
mddi_dummy_remove(struct platform_device * pdev)78 static int mddi_dummy_remove(struct platform_device *pdev)
79 {
80 struct panel_info *panel = platform_get_drvdata(pdev);
81 kfree(panel);
82 return 0;
83 }
84
85 static struct platform_driver mddi_client_dummy = {
86 .probe = mddi_dummy_probe,
87 .remove = mddi_dummy_remove,
88 .driver = { .name = "mddi_c_dummy" },
89 };
90
mddi_client_dummy_init(void)91 static int __init mddi_client_dummy_init(void)
92 {
93 platform_driver_register(&mddi_client_dummy);
94 return 0;
95 }
96
97 module_init(mddi_client_dummy_init);
98
99