clk: add clk_release_all()
Add clk_release_all() method which Disable/Free an
array of clocks that has been previously requested by
clk_request/get_by_*()
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 83b6328..ffbe872 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -65,6 +65,8 @@
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 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) {
@@ -187,6 +190,29 @@
return ops->disable(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;
+}
+
UCLASS_DRIVER(clk) = {
.id = UCLASS_CLK,
.name = "clk",