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Commit f0d6fe06 authored by Yuanfang Zhang's avatar Yuanfang Zhang Committed by Gerrit - the friendly Code Review server
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coresight: tpdm: add integration_test sysfs node 



Add a sysfs_node integration_test to test TPDM trace path.

Change-Id: I5f1cde1ab109b88b8ba6a1b6eba83e014bf6eea3
Signed-off-by: default avatarYuanfang Zhang <zhangyuanfang@codeaurora.org>
parent 6c24075f

drivers/hwtracing/coresight/coresight-tpdm.c

+43 −0
Original line number Diff line number Diff line
@@ -101,6 +101,8 @@ do { \ 
/* TPDM Specific Registers */

#define TPDM_ITATBCNTRL		(0xEF0)

#define TPDM_CLK_CTRL		(0x220)

#define TPDM_ITCNTRL		(0xF00)





#define TPDM_DATASETS		32

#define TPDM_BC_MAX_COUNTERS	32
@@ -134,6 +136,11 @@ do { \ 


#define HW_ENABLE_CHECK_VALUE   0x10





#define ATBCNTRL_VAL_32		0xC00F1409

#define ATBCNTRL_VAL_64		0xC01F1409





enum tpdm_dataset {

	TPDM_DS_IMPLDEF,

	TPDM_DS_DSB,
@@ -909,6 +916,41 @@ static ssize_t reset_store(struct device *dev, 
}

static DEVICE_ATTR_WO(reset);



static ssize_t integration_test_store(struct device *dev,

					  struct device_attribute *attr,

					  const char *buf,

					  size_t size)

{

	int i, ret = 0;

	unsigned long val;

	struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);



	ret = kstrtoul(buf, 10, &val);

	if (ret)

		return ret;



	if (val != 1 && val != 2)

		return -EINVAL;



	if (!drvdata->enable)

		return -EINVAL;



	if (val == 1)

		val = ATBCNTRL_VAL_64;

	else

		val = ATBCNTRL_VAL_32;

	TPDM_UNLOCK(drvdata);

	tpdm_writel(drvdata, 0x1, TPDM_ITCNTRL);



	for (i = 1; i < 5; i++)

		tpdm_writel(drvdata, val, TPDM_ITATBCNTRL);



	tpdm_writel(drvdata, 0, TPDM_ITCNTRL);

	TPDM_LOCK(drvdata);

	return size;

}

static DEVICE_ATTR_WO(integration_test);



static ssize_t gp_regs_show(struct device *dev,

				 struct device_attribute *attr,

				 char *buf)
@@ -3962,6 +4004,7 @@ static struct attribute *tpdm_attrs[] = { 
	&dev_attr_available_datasets.attr,

	&dev_attr_enable_datasets.attr,

	&dev_attr_reset.attr,

	&dev_attr_integration_test.attr,

	&dev_attr_gp_regs.attr,

	NULL,

};