1 /* 2 * omap_device headers 3 * 4 * Copyright (C) 2009 Nokia Corporation 5 * Paul Walmsley 6 * 7 * Developed in collaboration with (alphabetical order): Benoit 8 * Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram 9 * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard 10 * Woodruff 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 * 16 * This type of functionality should be implemented as a proper 17 * omap_bus/omap_device in Linux. 18 * 19 * omap_device differs from omap_hwmod in that it includes external 20 * (e.g., board- and system-level) integration details. omap_hwmod 21 * stores hardware data that is invariant for a given OMAP chip. 22 */ 23 #ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H 24 #define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H 25 26 #include <linux/kernel.h> 27 #include <linux/platform_device.h> 28 29 #include "omap_hwmod.h" 30 31 extern struct dev_pm_domain omap_device_pm_domain; 32 extern struct dev_pm_domain omap_device_fail_pm_domain; 33 34 /* omap_device._state values */ 35 #define OMAP_DEVICE_STATE_UNKNOWN 0 36 #define OMAP_DEVICE_STATE_ENABLED 1 37 #define OMAP_DEVICE_STATE_IDLE 2 38 #define OMAP_DEVICE_STATE_SHUTDOWN 3 39 40 /* omap_device.flags values */ 41 #define OMAP_DEVICE_SUSPENDED BIT(0) 42 43 /** 44 * struct omap_device - omap_device wrapper for platform_devices 45 * @pdev: platform_device 46 * @hwmods: (one .. many per omap_device) 47 * @hwmods_cnt: ARRAY_SIZE() of @hwmods 48 * @_state: one of OMAP_DEVICE_STATE_* (see above) 49 * @flags: device flags 50 * @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h> 51 * 52 * Integrates omap_hwmod data into Linux platform_device. 53 * 54 * Field names beginning with underscores are for the internal use of 55 * the omap_device code. 56 * 57 */ 58 struct omap_device { 59 struct platform_device *pdev; 60 struct omap_hwmod **hwmods; 61 unsigned long _driver_status; 62 u8 hwmods_cnt; 63 u8 _state; 64 u8 flags; 65 }; 66 67 /* Device driver interface (call via platform_data fn ptrs) */ 68 69 int omap_device_enable(struct platform_device *pdev); 70 int omap_device_idle(struct platform_device *pdev); 71 72 /* Core code interface */ 73 74 struct platform_device *omap_device_build(const char *pdev_name, int pdev_id, 75 struct omap_hwmod *oh, void *pdata, 76 int pdata_len); 77 78 struct omap_device *omap_device_alloc(struct platform_device *pdev, 79 struct omap_hwmod **ohs, int oh_cnt); 80 void omap_device_delete(struct omap_device *od); 81 int omap_device_register(struct platform_device *pdev); 82 83 struct device *omap_device_get_by_hwmod_name(const char *oh_name); 84 85 /* OMAP PM interface */ 86 int omap_device_get_context_loss_count(struct platform_device *pdev); 87 88 /* Other */ 89 90 int omap_device_assert_hardreset(struct platform_device *pdev, 91 const char *name); 92 int omap_device_deassert_hardreset(struct platform_device *pdev, 93 const char *name); 94 95 /* Get omap_device pointer from platform_device pointer */ 96 static inline struct omap_device *to_omap_device(struct platform_device *pdev) 97 { 98 return pdev ? pdev->archdata.od : NULL; 99 } 100 #endif 101