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