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![Simon Glass](/assets/img/avatar_default.png)
These have now landed upstream. The naming is different and in one case the function signature has changed. Update the code to match. This applies the following upstream commits by Thierry Reding <treding@nvidia.com> : 604e61e fdt: Add functions to retrieve strings 8702bd1 fdt: Add a function to get the index of a string 2218387 fdt: Add a function to count strings Signed-off-by: Simon Glass <sjg@chromium.org>
193 lines
3.7 KiB
C
193 lines
3.7 KiB
C
/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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* Copyright (c) 2016, NVIDIA CORPORATION.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <clk.h>
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#include <clk-uclass.h>
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#include <dm.h>
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#include <dt-structs.h>
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#include <errno.h>
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DECLARE_GLOBAL_DATA_PTR;
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static inline struct clk_ops *clk_dev_ops(struct udevice *dev)
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{
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return (struct clk_ops *)dev->driver->ops;
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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# if CONFIG_IS_ENABLED(OF_PLATDATA)
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int clk_get_by_index_platdata(struct udevice *dev, int index,
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struct phandle_2_cell *cells, struct clk *clk)
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{
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int ret;
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if (index != 0)
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return -ENOSYS;
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ret = uclass_get_device(UCLASS_CLK, 0, &clk->dev);
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if (ret)
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return ret;
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clk->id = cells[0].id;
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return 0;
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}
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# else
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static int clk_of_xlate_default(struct clk *clk,
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struct fdtdec_phandle_args *args)
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{
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debug("%s(clk=%p)\n", __func__, clk);
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if (args->args_count > 1) {
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debug("Invaild args_count: %d\n", args->args_count);
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return -EINVAL;
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}
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if (args->args_count)
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clk->id = args->args[0];
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else
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clk->id = 0;
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return 0;
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}
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int clk_get_by_index(struct udevice *dev, int index, struct clk *clk)
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{
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int ret;
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struct fdtdec_phandle_args args;
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struct udevice *dev_clk;
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struct clk_ops *ops;
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debug("%s(dev=%p, index=%d, clk=%p)\n", __func__, dev, index, clk);
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assert(clk);
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ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev->of_offset,
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"clocks", "#clock-cells", 0, index,
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&args);
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if (ret) {
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debug("%s: fdtdec_parse_phandle_with_args failed: err=%d\n",
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__func__, ret);
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return ret;
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}
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ret = uclass_get_device_by_of_offset(UCLASS_CLK, args.node, &dev_clk);
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if (ret) {
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debug("%s: uclass_get_device_by_of_offset failed: err=%d\n",
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__func__, ret);
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return ret;
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}
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ops = clk_dev_ops(dev_clk);
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if (ops->of_xlate)
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ret = ops->of_xlate(clk, &args);
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else
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ret = clk_of_xlate_default(clk, &args);
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if (ret) {
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debug("of_xlate() failed: %d\n", ret);
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return ret;
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}
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return clk_request(dev_clk, clk);
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}
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# endif /* OF_PLATDATA */
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int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
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{
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int index;
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debug("%s(dev=%p, name=%s, clk=%p)\n", __func__, dev, name, clk);
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index = fdt_stringlist_search(gd->fdt_blob, dev->of_offset,
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"clock-names", name);
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if (index < 0) {
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debug("fdt_stringlist_search() failed: %d\n", index);
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return index;
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}
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return clk_get_by_index(dev, index, clk);
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}
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#endif /* OF_CONTROL */
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int clk_request(struct udevice *dev, struct clk *clk)
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{
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struct clk_ops *ops = clk_dev_ops(dev);
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debug("%s(dev=%p, clk=%p)\n", __func__, dev, clk);
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clk->dev = dev;
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if (!ops->request)
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return 0;
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return ops->request(clk);
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}
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int clk_free(struct clk *clk)
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{
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struct clk_ops *ops = clk_dev_ops(clk->dev);
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debug("%s(clk=%p)\n", __func__, clk);
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if (!ops->free)
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return 0;
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return ops->free(clk);
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}
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ulong clk_get_rate(struct clk *clk)
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{
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struct clk_ops *ops = clk_dev_ops(clk->dev);
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debug("%s(clk=%p)\n", __func__, clk);
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if (!ops->get_rate)
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return -ENOSYS;
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return ops->get_rate(clk);
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}
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ulong clk_set_rate(struct clk *clk, ulong rate)
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{
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struct clk_ops *ops = clk_dev_ops(clk->dev);
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debug("%s(clk=%p, rate=%lu)\n", __func__, clk, rate);
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if (!ops->set_rate)
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return -ENOSYS;
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return ops->set_rate(clk, rate);
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}
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int clk_enable(struct clk *clk)
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{
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struct clk_ops *ops = clk_dev_ops(clk->dev);
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debug("%s(clk=%p)\n", __func__, clk);
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if (!ops->enable)
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return -ENOSYS;
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return ops->enable(clk);
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}
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int clk_disable(struct clk *clk)
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{
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struct clk_ops *ops = clk_dev_ops(clk->dev);
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debug("%s(clk=%p)\n", __func__, clk);
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if (!ops->disable)
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return -ENOSYS;
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return ops->disable(clk);
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}
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UCLASS_DRIVER(clk) = {
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.id = UCLASS_CLK,
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.name = "clk",
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};
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