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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-08 11:31:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-08 11:31:16 -0700
commit3f17ea6dea8ba5668873afa54628a91aaa3fb1c0 (patch)
treeafbeb2accd4c2199ddd705ae943995b143a0af02 /drivers/clk/qcom/common.c
parent1860e379875dfe7271c649058aeddffe5afd9d0d (diff)
parent1a5700bc2d10cd379a795fd2bb377a190af5acd4 (diff)
Merge branch 'next' (accumulated 3.16 merge window patches) into master
Now that 3.15 is released, this merges the 'next' branch into 'master', bringing us to the normal situation where my 'master' branch is the merge window. * accumulated work in next: (6809 commits) ufs: sb mutex merge + mutex_destroy powerpc: update comments for generic idle conversion cris: update comments for generic idle conversion idle: remove cpu_idle() forward declarations nbd: zero from and len fields in NBD_CMD_DISCONNECT. mm: convert some level-less printks to pr_* MAINTAINERS: adi-buildroot-devel is moderated MAINTAINERS: add linux-api for review of API/ABI changes mm/kmemleak-test.c: use pr_fmt for logging fs/dlm/debug_fs.c: replace seq_printf by seq_puts fs/dlm/lockspace.c: convert simple_str to kstr fs/dlm/config.c: convert simple_str to kstr mm: mark remap_file_pages() syscall as deprecated mm: memcontrol: remove unnecessary memcg argument from soft limit functions mm: memcontrol: clean up memcg zoneinfo lookup mm/memblock.c: call kmemleak directly from memblock_(alloc|free) mm/mempool.c: update the kmemleak stack trace for mempool allocations lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations mm: introduce kmemleak_update_trace() mm/kmemleak.c: use %u to print ->checksum ...
Diffstat (limited to 'drivers/clk/qcom/common.c')
-rw-r--r--drivers/clk/qcom/common.c101
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 00000000000..9b5a1cfc6b9
--- /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);