1 files changed, 101 insertions, 0 deletions

diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c
new file mode 100644
index 000000000000..9b5a1cfc6b91
--- /dev/null
+++ b/drivers/clk/qcom/common.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/export.h>
+#include <linux/regmap.h>
+#include <linux/platform_device.h>
+#include <linux/clk-provider.h>
+#include <linux/reset-controller.h>
+
+#include "common.h"
+#include "clk-regmap.h"
+#include "reset.h"
+
+struct qcom_cc {
+        struct qcom_reset_controller reset;
+        struct clk_onecell_data data;
+        struct clk *clks[];
+};
+
+int qcom_cc_probe(struct platform_device *pdev, const struct qcom_cc_desc *desc)
+{
+        void __iomem *base;
+        struct resource *res;
+        int i, ret;
+        struct device *dev = &pdev->dev;
+        struct clk *clk;
+        struct clk_onecell_data *data;
+        struct clk **clks;
+        struct regmap *regmap;
+        struct qcom_reset_controller *reset;
+        struct qcom_cc *cc;
+        size_t num_clks = desc->num_clks;
+        struct clk_regmap **rclks = desc->clks;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        base = devm_ioremap_resource(dev, res);
+        if (IS_ERR(base))
+                return PTR_ERR(base);
+
+        regmap = devm_regmap_init_mmio(dev, base, desc->config);
+        if (IS_ERR(regmap))
+                return PTR_ERR(regmap);
+
+        cc = devm_kzalloc(dev, sizeof(*cc) + sizeof(*clks) * num_clks,
+                          GFP_KERNEL);
+        if (!cc)
+                return -ENOMEM;
+
+        clks = cc->clks;
+        data = &cc->data;
+        data->clks = clks;
+        data->clk_num = num_clks;
+
+        for (i = 0; i < num_clks; i++) {
+                if (!rclks[i]) {
+                        clks[i] = ERR_PTR(-ENOENT);
+                        continue;
+                }
+                clk = devm_clk_register_regmap(dev, rclks[i]);
+                if (IS_ERR(clk))
+                        return PTR_ERR(clk);
+                clks[i] = clk;
+        }
+
+        ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, data);
+        if (ret)
+                return ret;
+
+        reset = &cc->reset;
+        reset->rcdev.of_node = dev->of_node;
+        reset->rcdev.ops = &qcom_reset_ops;
+        reset->rcdev.owner = dev->driver->owner;
+        reset->rcdev.nr_resets = desc->num_resets;
+        reset->regmap = regmap;
+        reset->reset_map = desc->resets;
+        platform_set_drvdata(pdev, &reset->rcdev);
+
+        ret = reset_controller_register(&reset->rcdev);
+        if (ret)
+                of_clk_del_provider(dev->of_node);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(qcom_cc_probe);
+
+void qcom_cc_remove(struct platform_device *pdev)
+{
+        of_clk_del_provider(pdev->dev.of_node);
+        reset_controller_unregister(platform_get_drvdata(pdev));
+}
+EXPORT_SYMBOL_GPL(qcom_cc_remove);