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 */ 52 struct 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 63 int omap_device_enable(struct platform_device *pdev); 64 int omap_device_idle(struct platform_device *pdev); 65 66 /* Other */ 67 68 int omap_device_assert_hardreset(struct platform_device *pdev, 69 const char *name); 70 int omap_device_deassert_hardreset(struct platform_device *pdev, 71 const char *name); 72 73 /* Get omap_device pointer from platform_device pointer */ to_omap_device(struct platform_device * pdev)74 static inline struct omap_device *to_omap_device(struct platform_device *pdev) 75 { 76 return pdev ? pdev->archdata.od : NULL; 77 } 78 #endif 79