Commit f2286d2b authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

ARM: omap2: remove unused omap_hwmod_reset.c 



Since commit 90aa4ed5 ("ARM: OMAP2+: Drop legacy platform
data for dra7 rtcss"), this is not used any more and can be
removed.

Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 3af8e972

arch/arm/mach-omap2/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
obj-y := id.o io.o control.o devices.o fb.o pm.o \

	 common.o dma.o omap-headsmp.o sram.o



hwmod-common				= omap_hwmod.o omap_hwmod_reset.o \

hwmod-common				= omap_hwmod.o \

					  omap_hwmod_common_data.o \

					  omap_hwmod_common_ipblock_data.o \

					  omap_device.o display.o hdq1w.o \

arch/arm/mach-omap2/omap_hwmod.h

+0 −7
Original line number Diff line number Diff line
@@ -669,13 +669,6 @@ omap_hwmod_for_each_by_class(const char *classname, 
}

#endif	/* CONFIG_OMAP_HWMOD */



/*

 *

 */



void omap_hwmod_rtc_unlock(struct omap_hwmod *oh);

void omap_hwmod_rtc_lock(struct omap_hwmod *oh);



/*

 * Chip variant-specific hwmod init routines - XXX should be converted

 * to use initcalls once the initial boot ordering is straightened out

arch/arm/mach-omap2/omap_hwmod_reset.c

deleted100644 → 0
+0 −98
Original line number Diff line number Diff line 
/*

 * OMAP IP block custom reset and preprogramming stubs

 *

 * Copyright (C) 2012 Texas Instruments, Inc.

 * Paul Walmsley

 *

 * A small number of IP blocks need custom reset and preprogramming

 * functions.  The stubs in this file provide a standard way for the

 * hwmod code to call these functions, which are to be located under

 * drivers/.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation version 2.

 *

 * This program is distributed "as is" WITHOUT ANY WARRANTY of any

 * kind, whether express or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA

 */

#include <linux/kernel.h>

#include <linux/errno.h>



#include "omap_hwmod.h"

#include "common.h"



#define OMAP_RTC_STATUS_REG	0x44

#define OMAP_RTC_KICK0_REG	0x6c

#define OMAP_RTC_KICK1_REG	0x70



#define OMAP_RTC_KICK0_VALUE	0x83E70B13

#define OMAP_RTC_KICK1_VALUE	0x95A4F1E0

#define OMAP_RTC_STATUS_BUSY	BIT(0)

#define OMAP_RTC_MAX_READY_TIME	50



/**

 * omap_rtc_wait_not_busy - Wait for the RTC BUSY flag

 * @oh: struct omap_hwmod *

 *

 * For updating certain RTC registers, the MPU must wait

 * for the BUSY status in OMAP_RTC_STATUS_REG to become zero.

 * Once the BUSY status is zero, there is a 15 microseconds access

 * period in which the MPU can program.

 */

static void omap_rtc_wait_not_busy(struct omap_hwmod *oh)

{

	int i;



	/* BUSY may stay active for 1/32768 second (~30 usec) */

	omap_test_timeout(omap_hwmod_read(oh, OMAP_RTC_STATUS_REG)

			  & OMAP_RTC_STATUS_BUSY, OMAP_RTC_MAX_READY_TIME, i);

	/* now we have ~15 microseconds to read/write various registers */

}



/**

 * omap_hwmod_rtc_unlock - Unlock the Kicker mechanism.

 * @oh: struct omap_hwmod *

 *

 * RTC IP have kicker feature. This prevents spurious writes to its registers.

 * In order to write into any of the RTC registers, KICK values has te be

 * written in respective KICK registers. This is needed for hwmod to write into

 * sysconfig register.

 */

void omap_hwmod_rtc_unlock(struct omap_hwmod *oh)

{

	unsigned long flags;



	local_irq_save(flags);

	omap_rtc_wait_not_busy(oh);

	omap_hwmod_write(OMAP_RTC_KICK0_VALUE, oh, OMAP_RTC_KICK0_REG);

	omap_hwmod_write(OMAP_RTC_KICK1_VALUE, oh, OMAP_RTC_KICK1_REG);

	local_irq_restore(flags);

}



/**

 * omap_hwmod_rtc_lock - Lock the Kicker mechanism.

 * @oh: struct omap_hwmod *

 *

 * RTC IP have kicker feature. This prevents spurious writes to its registers.

 * Once the RTC registers are written, KICK mechanism needs to be locked,

 * in order to prevent any spurious writes. This function locks back the RTC

 * registers once hwmod completes its write into sysconfig register.

 */

void omap_hwmod_rtc_lock(struct omap_hwmod *oh)

{

	unsigned long flags;



	local_irq_save(flags);

	omap_rtc_wait_not_busy(oh);

	omap_hwmod_write(0x0, oh, OMAP_RTC_KICK0_REG);

	omap_hwmod_write(0x0, oh, OMAP_RTC_KICK1_REG);

	local_irq_restore(flags);

}