1/* 2 * pm.c - Common OMAP2+ power management-related code 3 * 4 * Copyright (C) 2010 Texas Instruments, Inc. 5 * Copyright (C) 2010 Nokia Corporation 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12#include <linux/kernel.h> 13#include <linux/init.h> 14#include <linux/io.h> 15#include <linux/err.h> 16 17#include <plat/omap-pm.h> 18#include <plat/omap_device.h> 19#include <plat/common.h> 20 21static struct omap_device_pm_latency *pm_lats; 22 23static struct device *mpu_dev; 24static struct device *dsp_dev; 25static struct device *l3_dev; 26 27struct device *omap2_get_mpuss_device(void) 28{ 29 WARN_ON_ONCE(!mpu_dev); 30 return mpu_dev; 31} 32 33struct device *omap2_get_dsp_device(void) 34{ 35 WARN_ON_ONCE(!dsp_dev); 36 return dsp_dev; 37} 38 39struct device *omap2_get_l3_device(void) 40{ 41 WARN_ON_ONCE(!l3_dev); 42 return l3_dev; 43} 44 45/* static int _init_omap_device(struct omap_hwmod *oh, void *user) */ 46static int _init_omap_device(char *name, struct device **new_dev) 47{ 48 struct omap_hwmod *oh; 49 struct omap_device *od; 50 51 oh = omap_hwmod_lookup(name); 52 if (WARN(!oh, "%s: could not find omap_hwmod for %s\n", 53 __func__, name)) 54 return -ENODEV; 55 56 od = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false); 57 if (WARN(IS_ERR(od), "%s: could not build omap_device for %s\n", 58 __func__, name)) 59 return -ENODEV; 60 61 *new_dev = &od->pdev.dev; 62 63 return 0; 64} 65 66/* 67 * Build omap_devices for processors and bus. 68 */ 69static void omap2_init_processor_devices(void) 70{ 71 _init_omap_device("mpu", &mpu_dev); 72 _init_omap_device("iva", &dsp_dev); 73 _init_omap_device("l3_main", &l3_dev); 74} 75 76static int __init omap2_common_pm_init(void) 77{ 78 omap2_init_processor_devices(); 79 omap_pm_if_init(); 80 81 return 0; 82} 83device_initcall(omap2_common_pm_init); 84