Commit 6f88e9bc authored by Kevin Hilman's avatar Kevin Hilman Committed by Paul Walmsley
Browse files

OMAP: PM: create omap_devices for MPU, DSP, L3 



Create simple omap_devices for the main processors and busses.

This is required to support the forth-coming device-based OPP
approach, where OPPs are managed and tracked at the device level.

Also, move these common PM init functions into a common_pm_init call
that is called as a device_initcall().  The PM init is done at this level
to ensure that the driver core is initialized before initialized.

Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
[paul@pwsan.com: sparse warnings cleaned up; newly-created functions moved
 from mach-omap2/io.c to mach-omap2/pm.c; newly-created functions renamed
 to start with "omap2" rather than "omap"]
Signed-off-by: default avatarPaul Walmsley <paul@pwsan.com>
parent 06563581

arch/arm/mach-omap2/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
#



# Common support

obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o

obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o



omap-2-3-common				= irq.o sdrc.o

hwmod-common				= omap_hwmod.o \

arch/arm/mach-omap2/io.c

+1 −1
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ 


#include <plat/clockdomain.h>

#include "clockdomains.h"



#include <plat/omap_hwmod.h>



/*
@@ -349,7 +350,6 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0, 
	if (cpu_is_omap24xx() || cpu_is_omap34xx())   /* FIXME: OMAP4 */

		omap_hwmod_late_init(skip_setup_idle);



	omap_pm_if_init();

	if (cpu_is_omap24xx() || cpu_is_omap34xx()) {

		omap2_sdrc_init(sdrc_cs0, sdrc_cs1);

		_omap2_init_reprogram_sdrc();

arch/arm/mach-omap2/pm.c

0 → 100644
+84 −0
Original line number Diff line number Diff line 
/*

 * pm.c - Common OMAP2+ power management-related code

 *

 * Copyright (C) 2010 Texas Instruments, Inc.

 * Copyright (C) 2010 Nokia Corporation

 *

 * 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.

 */



#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/err.h>



#include <plat/omap-pm.h>

#include <plat/omap_device.h>

#include <plat/common.h>



static struct omap_device_pm_latency *pm_lats;



static struct device *mpu_dev;

static struct device *dsp_dev;

static struct device *l3_dev;



struct device *omap2_get_mpuss_device(void)

{

	WARN_ON_ONCE(!mpu_dev);

	return mpu_dev;

}



struct device *omap2_get_dsp_device(void)

{

	WARN_ON_ONCE(!dsp_dev);

	return dsp_dev;

}



struct device *omap2_get_l3_device(void)

{

	WARN_ON_ONCE(!l3_dev);

	return l3_dev;

}



/* static int _init_omap_device(struct omap_hwmod *oh, void *user) */

static int _init_omap_device(char *name, struct device **new_dev)

{

	struct omap_hwmod *oh;

	struct omap_device *od;



	oh = omap_hwmod_lookup(name);

	if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",

		 __func__, name))

		return -ENODEV;



	od = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false);

	if (WARN(IS_ERR(od), "%s: could not build omap_device for %s\n",

		 __func__, name))

		return -ENODEV;



	*new_dev = &od->pdev.dev;



	return 0;

}



/*

 * Build omap_devices for processors and bus.

 */

static void omap2_init_processor_devices(void)

{

	_init_omap_device("mpu", &mpu_dev);

	_init_omap_device("iva", &dsp_dev);

	_init_omap_device("l3_main", &l3_dev);

}



static int __init omap2_common_pm_init(void)

{

	omap2_init_processor_devices();

	omap_pm_if_init();



	return 0;

}

device_initcall(omap2_common_pm_init);

arch/arm/plat-omap/include/plat/common.h

+4 −0
Original line number Diff line number Diff line
@@ -87,4 +87,8 @@ void omap2_set_globals_uart(struct omap_globals *); 
	}							\

})



extern struct device *omap2_get_mpuss_device(void);

extern struct device *omap2_get_dsp_device(void);

extern struct device *omap2_get_l3_device(void);



#endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */

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