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Commit 3d577e8d authored by Satyajit Desai's avatar Satyajit Desai Committed by Gerrit - the friendly Code Review server
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coresight: cti: Add snapshot of CTI driver 



This is a snapshot of the CTI driver as of msm-4.4 commit
'5b7da258870763a6fe394b3ed1d96ddba59cce28'. Add driver support to
configure CTI hardware block. Minor coding style fixes and
copyright updates.

Change-Id: I225ef11d8818ed2676a6d67361b9ca2bb141c072
Signed-off-by: default avatarSatyajit Desai <sadesai@codeaurora.org>
parent e60ee002

drivers/hwtracing/coresight/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -123,4 +123,11 @@ config CORESIGHT_TPDM_DEFAULT_ENABLE 
	  If unsure, say 'N' here to avoid potential power and performance

	  penalty.



config CORESIGHT_CTI

	bool "CoreSight Cross Trigger Interface driver"

	help

	  This driver provides support for Cross Trigger Interface that is

	  used to input or output i.e. pass cross trigger events from one

	  hardware component to another. It can also be used to pass

	  software generated events.

endif

drivers/hwtracing/coresight/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -19,3 +19,4 @@ obj-$(CONFIG_CORESIGHT_STM) += coresight-stm.o 
obj-$(CONFIG_CORESIGHT_OST) += coresight-ost.o

obj-$(CONFIG_CORESIGHT_TPDA) += coresight-tpda.o

obj-$(CONFIG_CORESIGHT_TPDM) += coresight-tpdm.o

obj-$(CONFIG_CORESIGHT_CTI) += coresight-cti.o

drivers/hwtracing/coresight/coresight-cti.c

0 → 100644
+1566 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/hwtracing/coresight/coresight-priv.h

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#define CORESIGHT_DEVTYPE	0xfcc



#define TIMEOUT_US		100

#define BM(lsb, msb)		((BIT(msb) - BIT(lsb)) + BIT(msb))

#define BMVAL(val, lsb, msb)	((val & GENMASK(msb, lsb)) >> lsb)

#define BVAL(val, n)		((val & BIT(n)) >> n)

include/linux/coresight-cti.h

0 → 100644
+93 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2013-2014, 2016 The Linux Foundation. All rights reserved.

 *

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

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#ifndef _LINUX_CORESIGHT_CTI_H

#define _LINUX_CORESIGHT_CTI_H



#include <linux/list.h>



struct coresight_cti_data {

	int nr_ctis;

	const char **names;

};



struct coresight_cti {

	const char *name;

	struct list_head link;

};



#ifdef CONFIG_CORESIGHT_CTI

extern struct coresight_cti *coresight_cti_get(const char *name);

extern void coresight_cti_put(struct coresight_cti *cti);

extern int coresight_cti_map_trigin(

			struct coresight_cti *cti, int trig, int ch);

extern int coresight_cti_map_trigout(

			struct coresight_cti *cti, int trig, int ch);

extern void coresight_cti_unmap_trigin(

			struct coresight_cti *cti, int trig, int ch);

extern void coresight_cti_unmap_trigout(

			struct coresight_cti *cti, int trig, int ch);

extern void coresight_cti_reset(struct coresight_cti *cti);

extern int coresight_cti_set_trig(struct coresight_cti *cti, int ch);

extern void coresight_cti_clear_trig(struct coresight_cti *cti, int ch);

extern int coresight_cti_pulse_trig(struct coresight_cti *cti, int ch);

extern int coresight_cti_enable_gate(struct coresight_cti *cti, int ch);

extern void coresight_cti_disable_gate(struct coresight_cti *cti, int ch);

extern void coresight_cti_ctx_save(void);

extern void coresight_cti_ctx_restore(void);

extern int coresight_cti_ack_trig(struct coresight_cti *cti, int trig);

#else

static inline struct coresight_cti *coresight_cti_get(const char *name)

{

	return NULL;

}

static inline void coresight_cti_put(struct coresight_cti *cti) {}

static inline int coresight_cti_map_trigin(

			struct coresight_cti *cti, int trig, int ch)

{

	return -ENODEV;

}

static inline int coresight_cti_map_trigout(

			struct coresight_cti *cti, int trig, int ch)

{

	return -ENODEV;

}

static inline void coresight_cti_unmap_trigin(

			struct coresight_cti *cti, int trig, int ch) {}

static inline void coresight_cti_unmap_trigout(

			struct coresight_cti *cti, int trig, int ch) {}

static inline void coresight_cti_reset(struct coresight_cti *cti) {}

static inline int coresight_cti_set_trig(struct coresight_cti *cti, int ch)

{

	return -ENODEV;

}

static inline void coresight_cti_clear_trig(struct coresight_cti *cti, int ch)

{}

static inline int coresight_cti_pulse_trig(struct coresight_cti *cti, int ch)

{

	return -ENODEV;

}

static inline int coresight_cti_enable_gate(struct coresight_cti *cti, int ch)

{

	return -ENODEV;

}

static inline void coresight_cti_disable_gate(struct coresight_cti *cti, int ch)

{}

static inline void coresight_cti_ctx_save(void){}

static inline void coresight_cti_ctx_restore(void){}

static inline int coresight_cti_ack_trig(struct coresight_cti *cti, int trig)

{

	return -ENODEV;

}

#endif



#endif