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/
usr/
src/
linux-headers-3.0.0-14/
arch/
arm/
plat-omap/
include/
plat/
- drwxr-xr-x
|
Viewing file:  omap_device.h (4.92 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
* omap_device headers
*
* Copyright (C) 2009 Nokia Corporation
* Paul Walmsley
*
* Developed in collaboration with (alphabetical order): Benoit
* Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram
* Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
* Woodruff
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Eventually this type of functionality should either be
* a) implemented via arch-specific pointers in platform_device
* or
* b) implemented as a proper omap_bus/omap_device in Linux, no more
* platform_device
*
* omap_device differs from omap_hwmod in that it includes external
* (e.g., board- and system-level) integration details. omap_hwmod
* stores hardware data that is invariant for a given OMAP chip.
*
* To do:
* - GPIO integration
* - regulator integration
*
*/
#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <plat/omap_hwmod.h>
extern struct device omap_device_parent;
/* omap_device._state values */
#define OMAP_DEVICE_STATE_UNKNOWN 0
#define OMAP_DEVICE_STATE_ENABLED 1
#define OMAP_DEVICE_STATE_IDLE 2
#define OMAP_DEVICE_STATE_SHUTDOWN 3
/**
* struct omap_device - omap_device wrapper for platform_devices
* @pdev: platform_device
* @hwmods: (one .. many per omap_device)
* @hwmods_cnt: ARRAY_SIZE() of @hwmods
* @pm_lats: ptr to an omap_device_pm_latency table
* @pm_lats_cnt: ARRAY_SIZE() of what is passed to @pm_lats
* @pm_lat_level: array index of the last odpl entry executed - -1 if never
* @dev_wakeup_lat: dev wakeup latency in nanoseconds
* @_dev_wakeup_lat_limit: dev wakeup latency limit in nsec - set by OMAP PM
* @_state: one of OMAP_DEVICE_STATE_* (see above)
* @flags: device flags
*
* Integrates omap_hwmod data into Linux platform_device.
*
* Field names beginning with underscores are for the internal use of
* the omap_device code.
*
*/
struct omap_device {
struct platform_device pdev;
struct omap_hwmod **hwmods;
struct omap_device_pm_latency *pm_lats;
u32 dev_wakeup_lat;
u32 _dev_wakeup_lat_limit;
u8 pm_lats_cnt;
s8 pm_lat_level;
u8 hwmods_cnt;
u8 _state;
};
/* Device driver interface (call via platform_data fn ptrs) */
int omap_device_enable(struct platform_device *pdev);
int omap_device_idle(struct platform_device *pdev);
int omap_device_shutdown(struct platform_device *pdev);
/* Core code interface */
int omap_device_count_resources(struct omap_device *od);
int omap_device_fill_resources(struct omap_device *od, struct resource *res);
struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
struct omap_hwmod *oh, void *pdata,
int pdata_len,
struct omap_device_pm_latency *pm_lats,
int pm_lats_cnt, int is_early_device);
struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
struct omap_hwmod **oh, int oh_cnt,
void *pdata, int pdata_len,
struct omap_device_pm_latency *pm_lats,
int pm_lats_cnt, int is_early_device);
int omap_device_register(struct omap_device *od);
int omap_early_device_register(struct omap_device *od);
void __iomem *omap_device_get_rt_va(struct omap_device *od);
/* OMAP PM interface */
int omap_device_align_pm_lat(struct platform_device *pdev,
u32 new_wakeup_lat_limit);
struct powerdomain *omap_device_get_pwrdm(struct omap_device *od);
u32 omap_device_get_context_loss_count(struct platform_device *pdev);
/* Other */
int omap_device_idle_hwmods(struct omap_device *od);
int omap_device_enable_hwmods(struct omap_device *od);
int omap_device_disable_clocks(struct omap_device *od);
int omap_device_enable_clocks(struct omap_device *od);
/*
* Entries should be kept in latency order ascending
*
* deact_lat is the maximum number of microseconds required to complete
* deactivate_func() at the device's slowest OPP.
*
* act_lat is the maximum number of microseconds required to complete
* activate_func() at the device's slowest OPP.
*
* This will result in some suboptimal power management decisions at fast
* OPPs, but avoids having to recompute all device power management decisions
* if the system shifts from a fast OPP to a slow OPP (in order to meet
* latency requirements).
*
* XXX should deactivate_func/activate_func() take platform_device pointers
* rather than omap_device pointers?
*/
struct omap_device_pm_latency {
u32 deactivate_lat;
u32 deactivate_lat_worst;
int (*deactivate_func)(struct omap_device *od);
u32 activate_lat;
u32 activate_lat_worst;
int (*activate_func)(struct omap_device *od);
u32 flags;
};
#define OMAP_DEVICE_LATENCY_AUTO_ADJUST BIT(1)
/* Get omap_device pointer from platform_device pointer */
#define to_omap_device(x) container_of((x), struct omap_device, pdev)
#endif
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