coresight: moving to new "hwtracing" directory

Keeping drivers related to HW tracing on ARM, i.e coresight,
under "drivers/coresight" doesn't make sense when other
architectures start rolling out technologies of the same
nature.

As such creating a new "drivers/hwtracing" directory where all
drivers of the same kind can reside, reducing namespace
pollution under "drivers/".

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 258 deletions

diff --git a/drivers/coresight/coresight-funnel.c b/drivers/coresight/coresight-funnel.c
deleted file mode 100644
index 3db36f70b666..000000000000
--- a/drivers/coresight/coresight-funnel.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/* Copyright (c) 2011-2012, 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.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/coresight.h>
-#include <linux/amba/bus.h>
-
-#include "coresight-priv.h"
-
-#define FUNNEL_FUNCTL		0x000
-#define FUNNEL_PRICTL		0x004
-
-#define FUNNEL_HOLDTIME_MASK	0xf00
-#define FUNNEL_HOLDTIME_SHFT	0x8
-#define FUNNEL_HOLDTIME		(0x7 << FUNNEL_HOLDTIME_SHFT)
-
-/**
- * struct funnel_drvdata - specifics associated to a funnel component
- * @base:	memory mapped base address for this component.
- * @dev:	the device entity associated to this component.
- * @csdev:	component vitals needed by the framework.
- * @clk:	the clock this component is associated to.
- * @priority:	port selection order.
- */
-struct funnel_drvdata {
-	void __iomem		*base;
-	struct device		*dev;
-	struct coresight_device	*csdev;
-	struct clk		*clk;
-	unsigned long		priority;
-};
-
-static void funnel_enable_hw(struct funnel_drvdata *drvdata, int port)
-{
-	u32 functl;
-
-	CS_UNLOCK(drvdata->base);
-
-	functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
-	functl &= ~FUNNEL_HOLDTIME_MASK;
-	functl |= FUNNEL_HOLDTIME;
-	functl |= (1 << port);
-	writel_relaxed(functl, drvdata->base + FUNNEL_FUNCTL);
-	writel_relaxed(drvdata->priority, drvdata->base + FUNNEL_PRICTL);
-
-	CS_LOCK(drvdata->base);
-}
-
-static int funnel_enable(struct coresight_device *csdev, int inport,
-			 int outport)
-{
-	struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
-	int ret;
-
-	ret = clk_prepare_enable(drvdata->clk);
-	if (ret)
-		return ret;
-
-	funnel_enable_hw(drvdata, inport);
-
-	dev_info(drvdata->dev, "FUNNEL inport %d enabled\n", inport);
-	return 0;
-}
-
-static void funnel_disable_hw(struct funnel_drvdata *drvdata, int inport)
-{
-	u32 functl;
-
-	CS_UNLOCK(drvdata->base);
-
-	functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
-	functl &= ~(1 << inport);
-	writel_relaxed(functl, drvdata->base + FUNNEL_FUNCTL);
-
-	CS_LOCK(drvdata->base);
-}
-
-static void funnel_disable(struct coresight_device *csdev, int inport,
-			   int outport)
-{
-	struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
-
-	funnel_disable_hw(drvdata, inport);
-
-	clk_disable_unprepare(drvdata->clk);
-
-	dev_info(drvdata->dev, "FUNNEL inport %d disabled\n", inport);
-}
-
-static const struct coresight_ops_link funnel_link_ops = {
-	.enable		= funnel_enable,
-	.disable	= funnel_disable,
-};
-
-static const struct coresight_ops funnel_cs_ops = {
-	.link_ops	= &funnel_link_ops,
-};
-
-static ssize_t priority_show(struct device *dev,
-			     struct device_attribute *attr, char *buf)
-{
-	struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
-	unsigned long val = drvdata->priority;
-
-	return sprintf(buf, "%#lx\n", val);
-}
-
-static ssize_t priority_store(struct device *dev,
-			      struct device_attribute *attr,
-			      const char *buf, size_t size)
-{
-	int ret;
-	unsigned long val;
-	struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
-
-	ret = kstrtoul(buf, 16, &val);
-	if (ret)
-		return ret;
-
-	drvdata->priority = val;
-	return size;
-}
-static DEVICE_ATTR_RW(priority);
-
-static u32 get_funnel_ctrl_hw(struct funnel_drvdata *drvdata)
-{
-	u32 functl;
-
-	CS_UNLOCK(drvdata->base);
-	functl = readl_relaxed(drvdata->base + FUNNEL_FUNCTL);
-	CS_LOCK(drvdata->base);
-
-	return functl;
-}
-
-static ssize_t funnel_ctrl_show(struct device *dev,
-			     struct device_attribute *attr, char *buf)
-{
-	int ret;
-	u32 val;
-	struct funnel_drvdata *drvdata = dev_get_drvdata(dev->parent);
-
-	ret = clk_prepare_enable(drvdata->clk);
-	if (ret)
-		return ret;
-
-	val = get_funnel_ctrl_hw(drvdata);
-	clk_disable_unprepare(drvdata->clk);
-
-	return sprintf(buf, "%#x\n", val);
-}
-static DEVICE_ATTR_RO(funnel_ctrl);
-
-static struct attribute *coresight_funnel_attrs[] = {
-	&dev_attr_funnel_ctrl.attr,
-	&dev_attr_priority.attr,
-	NULL,
-};
-ATTRIBUTE_GROUPS(coresight_funnel);
-
-static int funnel_probe(struct amba_device *adev, const struct amba_id *id)
-{
-	void __iomem *base;
-	struct device *dev = &adev->dev;
-	struct coresight_platform_data *pdata = NULL;
-	struct funnel_drvdata *drvdata;
-	struct resource *res = &adev->res;
-	struct coresight_desc *desc;
-	struct device_node *np = adev->dev.of_node;
-
-	if (np) {
-		pdata = of_get_coresight_platform_data(dev, np);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-		adev->dev.platform_data = pdata;
-	}
-
-	drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
-	if (!drvdata)
-		return -ENOMEM;
-
-	drvdata->dev = &adev->dev;
-	dev_set_drvdata(dev, drvdata);
-
-	/* Validity for the resource is already checked by the AMBA core */
-	base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
-
-	drvdata->base = base;
-
-	drvdata->clk = adev->pclk;
-
-	desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
-	if (!desc)
-		return -ENOMEM;
-
-	desc->type = CORESIGHT_DEV_TYPE_LINK;
-	desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG;
-	desc->ops = &funnel_cs_ops;
-	desc->pdata = pdata;
-	desc->dev = dev;
-	desc->groups = coresight_funnel_groups;
-	drvdata->csdev = coresight_register(desc);
-	if (IS_ERR(drvdata->csdev))
-		return PTR_ERR(drvdata->csdev);
-
-	dev_info(dev, "FUNNEL initialized\n");
-	return 0;
-}
-
-static int funnel_remove(struct amba_device *adev)
-{
-	struct funnel_drvdata *drvdata = amba_get_drvdata(adev);
-
-	coresight_unregister(drvdata->csdev);
-	return 0;
-}
-
-static struct amba_id funnel_ids[] = {
-	{
-		.id     = 0x0003b908,
-		.mask   = 0x0003ffff,
-	},
-	{ 0, 0},
-};
-
-static struct amba_driver funnel_driver = {
-	.drv = {
-		.name	= "coresight-funnel",
-		.owner	= THIS_MODULE,
-	},
-	.probe		= funnel_probe,
-	.remove		= funnel_remove,
-	.id_table	= funnel_ids,
-};
-
-module_amba_driver(funnel_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("CoreSight Funnel driver");