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 21 static struct omap_device_pm_latency *pm_lats; 22 23 static struct device *mpu_dev; 24 static struct device *dsp_dev; 25 static struct device *l3_dev; 26 27 struct device *omap2_get_mpuss_device(void) 28 { 29 WARN_ON_ONCE(!mpu_dev); 30 return mpu_dev; 31 } 32 33 struct device *omap2_get_dsp_device(void) 34 { 35 WARN_ON_ONCE(!dsp_dev); 36 return dsp_dev; 37 } 38 39 struct 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) */ 46 static 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 */ 69 static 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 76 static int __init omap2_common_pm_init(void) 77 { 78 omap2_init_processor_devices(); 79 omap_pm_if_init(); 80 81 return 0; 82 } 83 device_initcall(omap2_common_pm_init); 84 85