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Add clk_set_assigned

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assigned-clock-parents are DT properties used to configure
some default parent clocks on one node.

Reviewed by:	mmel
MFC after:	2 weeks
This commit is contained in:
Emmanuel Vadot 2016-11-04 17:04:45 +00:00
parent e98bb55f0b
commit 90aabaafa5
2 changed files with 50 additions and 2 deletions
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50
sys/dev/extres/clk/clk.c
View File

@ -1196,7 +1196,47 @@ clk_get_by_id(device_t dev, struct clkdom *clkdom, intptr_t id, clk_t *clk)
#ifdef FDT
int
clk_get_by_ofw_index(device_t dev, phandle_t cnode, int idx, clk_t *clk)
clk_set_assigned(device_t dev, phandle_t node)
{
clk_t clk, clk_parent;
int error, nclocks, i;
error = ofw_bus_parse_xref_list_get_length(node,
"assigned-clock-parents", "#clock-cells", &nclocks);
if (error != 0) {
device_printf(dev, "cannot parse assigned-clock-parents property\n");
return (error);
}
for (i = 0; i < nclocks; i++) {
error = clk_get_by_ofw_index_prop(dev, 0,
"assigned-clock-parents", i, &clk_parent);
if (error != 0) {
device_printf(dev, "cannot get parent %d\n", i);
return (error);
}
error = clk_get_by_ofw_index_prop(dev, 0, "assigned-clocks",
i, &clk);
if (error != 0) {
device_printf(dev, "cannot get assigned clock %d\n", i);
clk_release(clk_parent);
return (error);
}
error = clk_set_parent_by_clk(clk, clk_parent);
clk_release(clk_parent);
clk_release(clk);
if (error != 0)
return (error);
}
return (0);
}
int
clk_get_by_ofw_index_prop(device_t dev, phandle_t cnode, const char *prop, int idx, clk_t *clk)
{
phandle_t parent, *cells;
device_t clockdev;
@ -1214,7 +1254,7 @@ clk_get_by_ofw_index(device_t dev, phandle_t cnode, int idx, clk_t *clk)
}
rv = ofw_bus_parse_xref_list_alloc(cnode, "clocks", "#clock-cells", idx,
rv = ofw_bus_parse_xref_list_alloc(cnode, prop, "#clock-cells", idx,
&parent, &ncells, &cells);
if (rv != 0) {
return (rv);
@ -1246,6 +1286,12 @@ clk_get_by_ofw_index(device_t dev, phandle_t cnode, int idx, clk_t *clk)
return (rv);
}
int
clk_get_by_ofw_index(device_t dev, phandle_t cnode, int idx, clk_t *clk)
{
return (clk_get_by_ofw_index_prop(dev, cnode, "clocks", idx, clk));
}
int
clk_get_by_ofw_name(device_t dev, phandle_t cnode, const char *name, clk_t *clk)
{

2
sys/dev/extres/clk/clk.h
View File

@ -129,7 +129,9 @@ int clk_set_parent_by_clk(clk_t clk, clk_t parent);
const char *clk_get_name(clk_t clk);
#ifdef FDT
int clk_set_assigned(device_t dev, phandle_t node);
int clk_get_by_ofw_index(device_t dev, phandle_t node, int idx, clk_t *clk);
int clk_get_by_ofw_index_prop(device_t dev, phandle_t cnode, const char *prop, int idx, clk_t *clk);
int clk_get_by_ofw_name(device_t dev, phandle_t node, const char *name,
clk_t *clk);
int clk_parse_ofw_out_names(device_t dev, phandle_t node,