diff options
author | Emmanuel Vadot <manu@FreeBSD.org> | 2016-11-04 17:04:45 +0000 |
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committer | Emmanuel Vadot <manu@FreeBSD.org> | 2016-11-04 17:04:45 +0000 |
commit | 90aabaafa55a7a3d48bf27db160b8f058298015d (patch) | |
tree | d4091d8a5f307f4b15d0376c38322c4128127bcc /sys/dev/extres | |
parent | e98bb55f0b6a228c63ff5d11cde0d5634ce48bfd (diff) | |
download | src-90aabaafa55a7a3d48bf27db160b8f058298015d.tar.gz src-90aabaafa55a7a3d48bf27db160b8f058298015d.zip |
Add clk_set_assigned
assigned-clock-parents are DT properties used to configure
some default parent clocks on one node.
Reviewed by: mmel
MFC after: 2 weeks
Notes
Notes:
svn path=/head/; revision=308298
Diffstat (limited to 'sys/dev/extres')
-rw-r--r-- | sys/dev/extres/clk/clk.c | 50 | ||||
-rw-r--r-- | sys/dev/extres/clk/clk.h | 2 |
2 files changed, 50 insertions, 2 deletions
diff --git a/sys/dev/extres/clk/clk.c b/sys/dev/extres/clk/clk.c index bcb0a263027e..9c189fa86699 100644 --- a/sys/dev/extres/clk/clk.c +++ b/sys/dev/extres/clk/clk.c @@ -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); @@ -1247,6 +1287,12 @@ done: } 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) { int rv, idx; diff --git a/sys/dev/extres/clk/clk.h b/sys/dev/extres/clk/clk.h index 60b8d2b77b75..9bd259997977 100644 --- a/sys/dev/extres/clk/clk.h +++ b/sys/dev/extres/clk/clk.h @@ -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, |