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Commit c78df4a6 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "coresight: cti: Add sys interface to show max trigger number"

parents 00b260c4 303fe66a

drivers/hwtracing/coresight/coresight-cti.c

+21 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ do { \ 
#define ITTRIGOUTACK		(0xEF0)

#define ITCHIN			(0xEF4)

#define ITTRIGIN		(0xEF8)

#define DEVID			(0xFC8)



#define CTI_MAX_TRIGGERS	(32)

#define CTI_MAX_CHANNELS	(4)
@@ -86,6 +87,8 @@ struct cti_drvdata { 
	struct coresight_cti		cti;

	int				refcnt;

	int				cpu;

	unsigned int			trig_num_max;

	unsigned int			ch_num_max;

	bool				cti_save;

	bool				cti_hwclk;

	bool				l2_off;
@@ -1353,6 +1356,19 @@ static ssize_t disable_gate_store(struct device *dev, 
}

static DEVICE_ATTR_WO(disable_gate);



static ssize_t show_info_show(struct device *dev, struct device_attribute *attr,

				char *buf)

{

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

	ssize_t size = 0;



	size = scnprintf(&buf[size], PAGE_SIZE, "%d %d\n",

			drvdata->trig_num_max, drvdata->ch_num_max);



	return size;

}

static DEVICE_ATTR_RO(show_info);



static struct attribute *cti_attrs[] = {

	&dev_attr_show_trigin.attr,

	&dev_attr_show_trigout.attr,
@@ -1369,6 +1385,7 @@ static struct attribute *cti_attrs[] = { 
	&dev_attr_show_gate.attr,

	&dev_attr_enable_gate.attr,

	&dev_attr_disable_gate.attr,

	&dev_attr_show_info.attr,

	NULL,

};
@@ -1468,6 +1485,7 @@ static int cti_init_save(struct cti_drvdata *drvdata, 
static int cti_probe(struct amba_device *adev, const struct amba_id *id)

{

	int ret;

	unsigned int ctidevid;

	struct device *dev = &adev->dev;

	struct coresight_platform_data *pdata;

	struct cti_drvdata *drvdata;
@@ -1539,6 +1557,9 @@ static int cti_probe(struct amba_device *adev, const struct amba_id *id) 
		registered++;

	}

	pm_runtime_put(&adev->dev);

	ctidevid = cti_readl(drvdata, DEVID);

	drvdata->trig_num_max = (ctidevid & GENMASK(15, 8)) >> 8;

	drvdata->ch_num_max = (ctidevid & GENMASK(21, 16)) >> 16;

	dev_dbg(dev, "CTI initialized\n");

	return 0;

err: