1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * omap_device headers 4 * 5 * Copyright (C) 2009 Nokia Corporation 6 * Paul Walmsley 7 * 8 * Developed in collaboration with (alphabetical order): Benoit 9 * Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram 10 * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard 11 * Woodruff 12 * 13 * This type of functionality should be implemented as a proper 14 * omap_bus/omap_device in Linux. 15 * 16 * omap_device differs from omap_hwmod in that it includes external 17 * (e.g., board- and system-level) integration details. omap_hwmod 18 * stores hardware data that is invariant for a given OMAP chip. 19 */ 20#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H 21#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H 22 23#include <linux/kernel.h> 24#include <linux/platform_device.h> 25 26#include "omap_hwmod.h" 27 28/* omap_device._state values */ 29#define OMAP_DEVICE_STATE_UNKNOWN 0 30#define OMAP_DEVICE_STATE_ENABLED 1 31#define OMAP_DEVICE_STATE_IDLE 2 32#define OMAP_DEVICE_STATE_SHUTDOWN 3 33 34/* omap_device.flags values */ 35#define OMAP_DEVICE_SUSPENDED BIT(0) 36 37/** 38 * struct omap_device - omap_device wrapper for platform_devices 39 * @pdev: platform_device 40 * @hwmods: (one .. many per omap_device) 41 * @hwmods_cnt: ARRAY_SIZE() of @hwmods 42 * @_state: one of OMAP_DEVICE_STATE_* (see above) 43 * @flags: device flags 44 * @_driver_status: one of BUS_NOTIFY_*_DRIVER from <linux/device.h> 45 * 46 * Integrates omap_hwmod data into Linux platform_device. 47 * 48 * Field names beginning with underscores are for the internal use of 49 * the omap_device code. 50 * 51 */ 52struct omap_device { 53 struct platform_device *pdev; 54 struct omap_hwmod **hwmods; 55 unsigned long _driver_status; 56 u8 hwmods_cnt; 57 u8 _state; 58 u8 flags; 59}; 60 61/* Device driver interface (call via platform_data fn ptrs) */ 62 63int omap_device_enable(struct platform_device *pdev); 64int omap_device_idle(struct platform_device *pdev); 65 66/* Other */ 67 68int omap_device_assert_hardreset(struct platform_device *pdev, 69 const char *name); 70int omap_device_deassert_hardreset(struct platform_device *pdev, 71 const char *name); 72 73/* Get omap_device pointer from platform_device pointer */ 74static inline struct omap_device *to_omap_device(struct platform_device *pdev) 75{ 76 return pdev ? pdev->archdata.od : NULL; 77} 78#endif 79