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 25struct panel_info { 26 struct platform_device pdev; 27 struct msm_panel_data panel_data; 28}; 29 30static int mddi_dummy_suspend(struct msm_panel_data *panel_data) 31{ 32 return 0; 33} 34 35static int mddi_dummy_resume(struct msm_panel_data *panel_data) 36{ 37 return 0; 38} 39 40static int mddi_dummy_blank(struct msm_panel_data *panel_data) 41{ 42 return 0; 43} 44 45static int mddi_dummy_unblank(struct msm_panel_data *panel_data) 46{ 47 return 0; 48} 49 50static 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 78static 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 85static struct platform_driver mddi_client_dummy = { 86 .probe = mddi_dummy_probe, 87 .remove = mddi_dummy_remove, 88 .driver = { .name = "mddi_c_dummy" }, 89}; 90 91static int __init mddi_client_dummy_init(void) 92{ 93 platform_driver_register(&mddi_client_dummy); 94 return 0; 95} 96 97module_init(mddi_client_dummy_init); 98