2009-09-03 17:14:05 +00:00
|
|
|
/*
|
|
|
|
|
* 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>
|
|
|
|
|
|
2009-10-20 16:40:47 +00:00
|
|
|
#include <plat/omap_hwmod.h>
|
2009-09-03 17:14:05 +00:00
|
|
|
|
2012-02-15 19:47:45 +00:00
|
|
|
extern struct dev_pm_domain omap_device_pm_domain;
|
2010-08-23 15:10:55 +00:00
|
|
|
|
2009-09-03 17:14:05 +00:00
|
|
|
/* 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
|
|
|
|
|
|
2011-07-12 20:48:19 +00:00
|
|
|
/* omap_device.flags values */
|
|
|
|
|
#define OMAP_DEVICE_SUSPENDED BIT(0)
|
2011-07-12 20:48:29 +00:00
|
|
|
#define OMAP_DEVICE_NO_IDLE_ON_SUSPEND BIT(1)
|
2011-07-12 20:48:19 +00:00
|
|
|
|
2009-09-03 17:14:05 +00:00
|
|
|
/**
|
|
|
|
|
* 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
|
2009-12-08 23:34:26 +00:00
|
|
|
* @dev_wakeup_lat: dev wakeup latency in nanoseconds
|
|
|
|
|
* @_dev_wakeup_lat_limit: dev wakeup latency limit in nsec - set by OMAP PM
|
2009-09-03 17:14:05 +00:00
|
|
|
* @_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 {
|
2011-07-21 20:58:51 +00:00
|
|
|
struct platform_device *pdev;
|
2009-09-03 17:14:05 +00:00
|
|
|
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;
|
2011-07-12 20:48:19 +00:00
|
|
|
u8 flags;
|
2009-09-03 17:14:05 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* 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 */
|
|
|
|
|
|
2011-07-21 20:48:45 +00:00
|
|
|
struct platform_device *omap_device_build(const char *pdev_name, int pdev_id,
|
2009-09-03 17:14:05 +00:00
|
|
|
struct omap_hwmod *oh, void *pdata,
|
|
|
|
|
int pdata_len,
|
|
|
|
|
struct omap_device_pm_latency *pm_lats,
|
2010-02-24 19:05:58 +00:00
|
|
|
int pm_lats_cnt, int is_early_device);
|
2009-09-03 17:14:05 +00:00
|
|
|
|
2011-07-21 20:48:45 +00:00
|
|
|
struct platform_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
|
2009-09-03 17:14:05 +00:00
|
|
|
struct omap_hwmod **oh, int oh_cnt,
|
|
|
|
|
void *pdata, int pdata_len,
|
|
|
|
|
struct omap_device_pm_latency *pm_lats,
|
2010-02-24 19:05:58 +00:00
|
|
|
int pm_lats_cnt, int is_early_device);
|
2009-09-03 17:14:05 +00:00
|
|
|
|
ARM: OMAP: omap_device: Expose omap_device_{alloc, delete, register}
Expose omap_device_{alloc, delete, register} so we can use them outside
of omap_device.c.
This approach allows users, which need to manipulate an archdata member
of a device before it is registered, to do so. This is also useful
for users who have their devices created very early so they can be used
at ->reserve() time to reserve CMA memory.
The immediate use case for this is to set the private iommu archdata
member, which binds a device to its associated iommu controller.
This way, generic code will be able to attach omap devices to their
iommus, without calling any omap-specific API.
With this in hand, we can further clean the existing mainline OMAP iommu
driver and its mainline users, and focus on generic IOMMU approaches
for future users (rpmsg/remoteproc and the upcoming generic DMA API).
This patch is still considered an interim solution until DT fully materializes
for omap; at that point, this functionality will be removed as DT will
take care of creating the devices and configuring them correctly.
Tested on OMAP4 with a generic rpmsg/remoteproc that doesn't use any
omap-specific IOMMU API anymore.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-20 17:43:29 +00:00
|
|
|
struct omap_device *omap_device_alloc(struct platform_device *pdev,
|
|
|
|
|
struct omap_hwmod **ohs, int oh_cnt,
|
|
|
|
|
struct omap_device_pm_latency *pm_lats,
|
|
|
|
|
int pm_lats_cnt);
|
|
|
|
|
void omap_device_delete(struct omap_device *od);
|
|
|
|
|
int omap_device_register(struct platform_device *pdev);
|
|
|
|
|
|
2010-07-26 22:34:33 +00:00
|
|
|
void __iomem *omap_device_get_rt_va(struct omap_device *od);
|
2011-07-27 20:02:32 +00:00
|
|
|
struct device *omap_device_get_by_hwmod_name(const char *oh_name);
|
2010-07-26 22:34:33 +00:00
|
|
|
|
2009-09-03 17:14:05 +00:00
|
|
|
/* 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);
|
2011-06-09 13:56:23 +00:00
|
|
|
int omap_device_get_context_loss_count(struct platform_device *pdev);
|
2009-09-03 17:14:05 +00:00
|
|
|
|
|
|
|
|
/* 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;
|
2010-01-27 03:13:02 +00:00
|
|
|
u32 deactivate_lat_worst;
|
2009-09-03 17:14:05 +00:00
|
|
|
int (*deactivate_func)(struct omap_device *od);
|
|
|
|
|
u32 activate_lat;
|
2010-01-27 03:13:02 +00:00
|
|
|
u32 activate_lat_worst;
|
2009-09-03 17:14:05 +00:00
|
|
|
int (*activate_func)(struct omap_device *od);
|
2010-01-27 03:13:02 +00:00
|
|
|
u32 flags;
|
2009-09-03 17:14:05 +00:00
|
|
|
};
|
|
|
|
|
|
2010-01-27 03:13:02 +00:00
|
|
|
#define OMAP_DEVICE_LATENCY_AUTO_ADJUST BIT(1)
|
2009-09-03 17:14:05 +00:00
|
|
|
|
2009-12-08 23:34:17 +00:00
|
|
|
/* Get omap_device pointer from platform_device pointer */
|
2011-07-21 20:58:51 +00:00
|
|
|
static inline struct omap_device *to_omap_device(struct platform_device *pdev)
|
|
|
|
|
{
|
|
|
|
|
return pdev ? pdev->archdata.od : NULL;
|
|
|
|
|
}
|
2009-09-03 17:14:05 +00:00
|
|
|
|
2011-08-01 16:33:13 +00:00
|
|
|
static inline
|
|
|
|
|
void omap_device_disable_idle_on_suspend(struct platform_device *pdev)
|
|
|
|
|
{
|
|
|
|
|
struct omap_device *od = to_omap_device(pdev);
|
|
|
|
|
|
|
|
|
|
od->flags |= OMAP_DEVICE_NO_IDLE_ON_SUSPEND;
|
|
|
|
|
}
|
|
|
|
|
|
2009-12-08 23:34:17 +00:00
|
|
|
#endif
|
