arch/arm/mach-omap2/omap_dmm.c

   1 /*
   2  * DMM driver support functions for TI OMAP processors.
   3  *
   4  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation version 2.
   9  *
  10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11  * kind, whether express or implied; without even the implied warranty
  12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15 #include <linux/io.h>
  16 #include <linux/init.h>
  17 #include <linux/module.h>
  18 #include <mach/dmm.h>
  19 #include <plat/omap_device.h>
  20 #include <plat/omap_hwmod.h>
  21 #include <linux/errno.h>
  22 #include <linux/err.h>
  23 #include <mach/dmm.h>
  24 #include <mach/tiler.h>
  25
  26 #ifdef CONFIG_TI_TILER
  27
  28 static struct omap_dmm_platform_data dmm_data = {
  29         .oh_name = "dmm",
  30 };
  31
  32 static struct platform_device omap_tiler_device = {
  33         .name           = "tiler",
  34         .id             = -1,
  35 };
  36
  37 static struct omap_device_pm_latency omap_dmm_latency[] = {
  38         [0] = {
  39                 .deactivate_func = omap_device_idle_hwmods,
  40                 .activate_func = omap_device_enable_hwmods,
  41                 .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
  42         },
  43 };
  44
  45
  46 void __init omap_dmm_init(void)
  47 {
  48         struct omap_hwmod *oh = NULL;
  49         struct omap_device *od = NULL;
  50
  51         oh = omap_hwmod_lookup(dmm_data.oh_name);
  52         if (!oh)
  53                 return;
  54
  55         dmm_data.base = omap_hwmod_get_mpu_rt_va(oh);
  56         dmm_data.irq = oh->mpu_irqs[0].irq;
  57
  58         od = omap_device_build(dmm_data.oh_name, -1, oh, &dmm_data,
  59                                 sizeof(dmm_data), omap_dmm_latency,
  60                                 ARRAY_SIZE(omap_dmm_latency), false);
  61
  62         /* register tiler platform device to go along with the dmm device */
  63         if (platform_device_register(&omap_tiler_device) < 0)
  64                 printk(KERN_ERR "Unable to register OMAP Tiler device\n");
  65
  66         return;
  67 }
  68
  69 #else
  70 void __init omap_dmm_init(void)
  71 {
  72 }
  73 #endif