@@ -3,4 +3,4 @@
#
obj-$(CONFIG_CORESIGHT) += coresight.o
obj-$(CONFIG_OF) += of_coresight.o
-obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-tmc.o coresight-tpiu.o coresight-etb.o coresight-funnel.o
+obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-tmc.o coresight-tpiu.o coresight-etb.o coresight-funnel.o coresight-replicator.o
new file mode 100644
@@ -0,0 +1,211 @@
+/* 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/device.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/of_coresight.h>
+#include <linux/coresight.h>
+
+#include "coresight-priv.h"
+
+#define replicator_writel(drvdata, val, off) \
+ __raw_writel((val), drvdata->base + off)
+#define replicator_readl(drvdata, off) \
+ __raw_readl(drvdata->base + off)
+
+#define REPLICATOR_LOCK(drvdata) \
+do { \
+ mb(); \
+ replicator_writel(drvdata, 0x0, CORESIGHT_LAR); \
+} while (0)
+#define REPLICATOR_UNLOCK(drvdata) \
+do { \
+ replicator_writel(drvdata, CORESIGHT_UNLOCK, CORESIGHT_LAR); \
+ mb(); \
+} while (0)
+
+#define REPLICATOR_IDFILTER0 (0x000)
+#define REPLICATOR_IDFILTER1 (0x004)
+#define REPLICATOR_ITATBCTR0 (0xEFC)
+#define REPLICATOR_ITATBCTR1 (0xEF8)
+
+struct replicator_drvdata {
+ void __iomem *base;
+ struct device *dev;
+ struct coresight_device *csdev;
+ struct clk *clk;
+};
+
+static void __replicator_enable(struct replicator_drvdata *drvdata, int outport)
+{
+ REPLICATOR_UNLOCK(drvdata);
+
+ if (outport == 0) {
+ replicator_writel(drvdata, 0x0, REPLICATOR_IDFILTER0);
+ replicator_writel(drvdata, 0xFF, REPLICATOR_IDFILTER1);
+ } else {
+ replicator_writel(drvdata, 0x0, REPLICATOR_IDFILTER1);
+ replicator_writel(drvdata, 0xFF, REPLICATOR_IDFILTER0);
+ }
+
+ REPLICATOR_LOCK(drvdata);
+}
+
+static int replicator_enable(struct coresight_device *csdev, int inport,
+ int outport)
+{
+ struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
+ int ret;
+
+ ret = clk_prepare_enable(drvdata->clk);
+ if (ret)
+ return ret;
+
+ __replicator_enable(drvdata, outport);
+
+ dev_info(drvdata->dev, "REPLICATOR enabled\n");
+ return 0;
+}
+
+static void __replicator_disable(struct replicator_drvdata *drvdata,
+ int outport)
+{
+ REPLICATOR_UNLOCK(drvdata);
+
+ if (outport == 0)
+ replicator_writel(drvdata, 0xFF, REPLICATOR_IDFILTER0);
+ else
+ replicator_writel(drvdata, 0xFF, REPLICATOR_IDFILTER1);
+
+ REPLICATOR_LOCK(drvdata);
+}
+
+static void replicator_disable(struct coresight_device *csdev, int inport,
+ int outport)
+{
+ struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
+
+ __replicator_disable(drvdata, outport);
+
+ clk_disable_unprepare(drvdata->clk);
+
+ dev_info(drvdata->dev, "REPLICATOR disabled\n");
+}
+
+static const struct coresight_ops_link replicator_link_ops = {
+ .enable = replicator_enable,
+ .disable = replicator_disable,
+};
+
+static const struct coresight_ops replicator_cs_ops = {
+ .link_ops = &replicator_link_ops,
+};
+
+static int __devinit replicator_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct device *dev = &pdev->dev;
+ struct coresight_platform_data *pdata;
+ struct replicator_drvdata *drvdata;
+ struct resource *res;
+ struct coresight_desc *desc;
+
+ if (pdev->dev.of_node) {
+ pdata = of_get_coresight_platform_data(dev, pdev->dev.of_node);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ pdev->dev.platform_data = pdata;
+ }
+
+ drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+ drvdata->dev = &pdev->dev;
+ platform_set_drvdata(pdev, drvdata);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ drvdata->base = devm_ioremap(dev, res->start, resource_size(res));
+ if (!drvdata->base)
+ return -ENOMEM;
+
+ drvdata->clk = devm_clk_get(dev, "core_clk");
+ if (IS_ERR(drvdata->clk))
+ return PTR_ERR(drvdata->clk);
+
+ ret = clk_set_rate(drvdata->clk, CORESIGHT_CLK_RATE_TRACE);
+ if (ret)
+ return ret;
+
+ desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
+ if (!desc)
+ return -ENOMEM;
+ desc->type = CORESIGHT_DEV_TYPE_LINK;
+ desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
+ desc->ops = &replicator_cs_ops;
+ desc->pdata = pdev->dev.platform_data;
+ desc->dev = &pdev->dev;
+ desc->owner = THIS_MODULE;
+ drvdata->csdev = coresight_register(desc);
+ if (IS_ERR(drvdata->csdev))
+ return PTR_ERR(drvdata->csdev);
+
+ dev_info(dev, "REPLICATOR initialized\n");
+ return 0;
+}
+
+static int __devexit replicator_remove(struct platform_device *pdev)
+{
+ struct replicator_drvdata *drvdata = platform_get_drvdata(pdev);
+
+ coresight_unregister(drvdata->csdev);
+ return 0;
+}
+
+static struct of_device_id replicator_match[] = {
+ {.compatible = "qcom,coresight-replicator"},
+ {}
+};
+
+static struct platform_driver replicator_driver = {
+ .probe = replicator_probe,
+ .remove = __devexit_p(replicator_remove),
+ .driver = {
+ .name = "coresight-replicator",
+ .owner = THIS_MODULE,
+ .of_match_table = replicator_match,
+ },
+};
+
+static int __init replicator_init(void)
+{
+ return platform_driver_register(&replicator_driver);
+}
+module_init(replicator_init);
+
+static void __exit replicator_exit(void)
+{
+ platform_driver_unregister(&replicator_driver);
+}
+module_exit(replicator_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("CoreSight Replicator driver");