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Commit fe0d3b36 authored by Mulu He's avatar Mulu He
Browse files

coresight: tpdm: Add sysfs to control timestamp for each MCMB frame 



Add sysfs to control timestamp for each MCMB frame, QDSS TPDM HW
adds a new feature to allow SW request timestamping every frame.
We need SW support from QTF tool side to incorporate the changes
to expose this capability to users.

Change-Id: I45b9ab96be2241d7222b8a1f81246cf012f14ace
Signed-off-by: default avatarMulu He <muluhe@codeaurora.org>
parent bb5ec31f

drivers/hwtracing/coresight/coresight-tpdm.c

+44 −0
Original line number Diff line number Diff line
@@ -230,6 +230,7 @@ struct cmb_dataset { 
	uint32_t		trig_patt_val[TPDM_CMB_PATT_CMP];

	uint32_t		trig_patt_mask[TPDM_CMB_PATT_CMP];

	bool			trig_ts;

	bool			ts_all;

	uint32_t		msr[TPDM_CMB_MAX_MSR];

	uint8_t			read_ctl_reg;

	struct mcmb_dataset	*mcmb;
@@ -627,6 +628,10 @@ static void __tpdm_enable_mcmb(struct tpdm_drvdata *drvdata) 
		val = val | BIT(1);

	else

		val = val & ~BIT(1);

	if (drvdata->cmb->ts_all)

		val = val | BIT(2);

	else

		val = val & ~BIT(2);

	tpdm_writel(drvdata, val, TPDM_CMB_TIER);



	__tpdm_config_cmb_msr(drvdata);
@@ -3564,6 +3569,44 @@ static ssize_t cmb_patt_ts_store(struct device *dev, 
}

static DEVICE_ATTR_RW(cmb_patt_ts);



static ssize_t cmb_ts_all_show(struct device *dev,

				     struct device_attribute *attr,

				     char *buf)

{

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



	if (!(test_bit(TPDM_DS_CMB, drvdata->datasets) ||

	      test_bit(TPDM_DS_MCMB, drvdata->datasets)))

		return -EPERM;



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

			 (unsigned int)drvdata->cmb->ts_all);

}



static ssize_t cmb_ts_all_store(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_CMB, drvdata->datasets) ||

	      test_bit(TPDM_DS_MCMB, drvdata->datasets)))

		return -EPERM;



	mutex_lock(&drvdata->lock);

	if (val)

		drvdata->cmb->ts_all = true;

	else

		drvdata->cmb->ts_all = false;

	mutex_unlock(&drvdata->lock);

	return size;

}

static DEVICE_ATTR_RW(cmb_ts_all);



static ssize_t cmb_trig_patt_val_lsb_show(struct device *dev,

					       struct device_attribute *attr,

					       char *buf)
@@ -4049,6 +4092,7 @@ static struct attribute *tpdm_cmb_attrs[] = { 
	&dev_attr_cmb_patt_val.attr,

	&dev_attr_cmb_patt_mask.attr,

	&dev_attr_cmb_patt_ts.attr,

	&dev_attr_cmb_ts_all.attr,

	&dev_attr_cmb_trig_patt_val_lsb.attr,

	&dev_attr_cmb_trig_patt_mask_lsb.attr,

	&dev_attr_cmb_trig_patt_val_msb.attr,