drivers/gpu/drm/omapdrm/dss/core.c

   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/platform_device.h>
  28
  29 #include "omapdss.h"
  30 #include "dss.h"
  31
  32 /* INIT */
  33 static int (*dss_output_drv_reg_funcs[])(void) __initdata = {
  34         dss_init_platform_driver,
  35         dispc_init_platform_driver,
  36 #ifdef CONFIG_OMAP2_DSS_DSI
  37         dsi_init_platform_driver,
  38 #endif
  39 #ifdef CONFIG_OMAP2_DSS_VENC
  40         venc_init_platform_driver,
  41 #endif
  42 #ifdef CONFIG_OMAP4_DSS_HDMI
  43         hdmi4_init_platform_driver,
  44 #endif
  45 #ifdef CONFIG_OMAP5_DSS_HDMI
  46         hdmi5_init_platform_driver,
  47 #endif
  48 };
  49
  50 static void (*dss_output_drv_unreg_funcs[])(void) = {
  51 #ifdef CONFIG_OMAP5_DSS_HDMI
  52         hdmi5_uninit_platform_driver,
  53 #endif
  54 #ifdef CONFIG_OMAP4_DSS_HDMI
  55         hdmi4_uninit_platform_driver,
  56 #endif
  57 #ifdef CONFIG_OMAP2_DSS_VENC
  58         venc_uninit_platform_driver,
  59 #endif
  60 #ifdef CONFIG_OMAP2_DSS_DSI
  61         dsi_uninit_platform_driver,
  62 #endif
  63         dispc_uninit_platform_driver,
  64         dss_uninit_platform_driver,
  65 };
  66
  67 static struct platform_device *omap_drm_device;
  68
  69 static int __init omap_dss_init(void)
  70 {
  71         int r;
  72         int i;
  73
  74         for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) {
  75                 r = dss_output_drv_reg_funcs[i]();
  76                 if (r)
  77                         goto err_reg;
  78         }
  79
  80         omap_drm_device = platform_device_register_simple("omapdrm", 0, NULL, 0);
  81         if (IS_ERR(omap_drm_device)) {
  82                 r = PTR_ERR(omap_drm_device);
  83                 goto err_reg;
  84         }
  85
  86         return 0;
  87
  88 err_reg:
  89         for (i = ARRAY_SIZE(dss_output_drv_reg_funcs) - i;
  90                         i < ARRAY_SIZE(dss_output_drv_reg_funcs);
  91                         ++i)
  92                 dss_output_drv_unreg_funcs[i]();
  93
  94         return r;
  95 }
  96
  97 static void __exit omap_dss_exit(void)
  98 {
  99         int i;
 100
 101         platform_device_unregister(omap_drm_device);
 102
 103         for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i)
 104                 dss_output_drv_unreg_funcs[i]();
 105 }
 106
 107 module_init(omap_dss_init);
 108 module_exit(omap_dss_exit);
 109
 110 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
 111 MODULE_DESCRIPTION("OMAP2/3 Display Subsystem");
 112 MODULE_LICENSE("GPL v2");
 113