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Commit e34081c6 authored by Shashank Mittal's avatar Shashank Mittal Committed by Kyle Yan
Browse files

coresight-tpdm: add support for configuring patt_type for dsb 



DSB_TIER.PATT_TYPE bit can be used to choose a driver for
pattern matching based timestamps for DSB subunit.

Add support to configure this bit.

Change-Id: Id07ee18006c96e9a66cab5f4e7544dda85a692f8
Signed-off-by: default avatarShashank Mittal <mittals@codeaurora.org>
parent 33551e20

drivers/hwtracing/coresight/coresight-tpdm.c

+44 −2
Original line number Diff line number Diff line
@@ -215,6 +215,7 @@ struct dsb_dataset { 
	uint32_t		patt_val[TPDM_DSB_MAX_PATT];

	uint32_t		patt_mask[TPDM_DSB_MAX_PATT];

	bool			patt_ts;

	bool			patt_type;

	uint32_t		trig_patt_val[TPDM_DSB_MAX_PATT];

	uint32_t		trig_patt_mask[TPDM_DSB_MAX_PATT];

	bool			trig_ts;
@@ -469,10 +470,15 @@ static void __tpdm_enable_dsb(struct tpdm_drvdata *drvdata) 
			    TPDM_DSB_CA_SELECT(i));



	val = tpdm_readl(drvdata, TPDM_DSB_TIER);

	if (drvdata->dsb->patt_ts == true)

	if (drvdata->dsb->patt_ts == true) {

		val = val | BIT(0);

		if (drvdata->dsb->patt_type == true)

			val = val | BIT(2);

		else

			val = val & ~BIT(2);

	} else {

		val = val & ~BIT(0);

	}

	if (drvdata->dsb->trig_ts == true)

		val = val | BIT(1);

	else
@@ -2792,6 +2798,41 @@ static ssize_t tpdm_store_dsb_patt_ts(struct device *dev, 
static DEVICE_ATTR(dsb_patt_ts, S_IRUGO | S_IWUSR,

		   tpdm_show_dsb_patt_ts, tpdm_store_dsb_patt_ts);



static ssize_t tpdm_show_dsb_patt_type(struct device *dev,

				       struct device_attribute *attr, char *buf)

{

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



	if (!test_bit(TPDM_DS_DSB, drvdata->datasets))

		return -EPERM;



	return scnprintf(buf, PAGE_SIZE, "%u\n",

			 (unsigned)drvdata->dsb->patt_type);

}



static ssize_t tpdm_store_dsb_patt_type(struct device *dev,

					struct device_attribute *attr,

					const char *buf, size_t size)

{

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

	unsigned long val;



	if (kstrtoul(buf, 16, &val))

		return -EINVAL;

	if (!test_bit(TPDM_DS_DSB, drvdata->datasets))

		return -EPERM;



	mutex_lock(&drvdata->lock);

	if (val)

		drvdata->dsb->patt_type = true;

	else

		drvdata->dsb->patt_type = false;

	mutex_unlock(&drvdata->lock);

	return size;

}

static DEVICE_ATTR(dsb_patt_type, S_IRUGO | S_IWUSR,

		   tpdm_show_dsb_patt_type, tpdm_store_dsb_patt_type);



static ssize_t tpdm_show_dsb_trig_patt_val(struct device *dev,

					   struct device_attribute *attr,

					   char *buf)
@@ -3493,6 +3534,7 @@ static struct attribute *tpdm_dsb_attrs[] = { 
	&dev_attr_dsb_patt_val.attr,

	&dev_attr_dsb_patt_mask.attr,

	&dev_attr_dsb_patt_ts.attr,

	&dev_attr_dsb_patt_type.attr,

	&dev_attr_dsb_trig_patt_val.attr,

	&dev_attr_dsb_trig_patt_mask.attr,

	&dev_attr_dsb_trig_ts.attr,