diff options
Diffstat (limited to 'drivers/clk/clk-uclass.c')
| -rw-r--r-- | drivers/clk/clk-uclass.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index 83b63288fb..e68d9279b9 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -65,6 +65,8 @@ int clk_get_by_index(struct udevice *dev, int index, struct clk *clk) debug("%s(dev=%p, index=%d, clk=%p)\n", __func__, dev, index, clk); assert(clk); + clk->dev = NULL; + ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0, index, &args); if (ret) { @@ -102,6 +104,7 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk) int index; debug("%s(dev=%p, name=%s, clk=%p)\n", __func__, dev, name, clk); + clk->dev = NULL; index = dev_read_stringlist_search(dev, "clock-names", name); if (index < 0) { @@ -111,6 +114,30 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk) return clk_get_by_index(dev, index, clk); } + +int clk_release_all(struct clk *clk, int count) +{ + int i, ret; + + for (i = 0; i < count; i++) { + debug("%s(clk[%d]=%p)\n", __func__, i, &clk[i]); + + /* check if clock has been previously requested */ + if (!clk[i].dev) + continue; + + ret = clk_disable(&clk[i]); + if (ret && ret != -ENOSYS) + return ret; + + ret = clk_free(&clk[i]); + if (ret && ret != -ENOSYS) + return ret; + } + + return 0; +} + #endif /* OF_CONTROL */ int clk_request(struct udevice *dev, struct clk *clk) |