clk: fixed-factor: Add CLK_FIXED_FACTOR_HWS which takes list of struct clk_hw *

With the new clk parenting code, clk_init_data was expanded to include
.parent_hws, for clk drivers to directly reference parents by clk_hw.

Add a new macro, CLK_FIXED_FACTOR_HWS, that can take an array of pointers
to struct clk_hw, instead of a string, as its parent. Taking an array
instead of a direct pointer allows the reuse of the array for multiple
clks, rather than having one compound literal with the same contents
allocated for each clk declaration.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>

diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index c85e9f3..146a685 100644 (file)
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -996,6 +996,21 @@ extern struct of_device_id __clk_of_table;
                                                 _flags),               \
        }
 
+/*
+ * This macro allows the driver to reuse the _parent array for multiple
+ * fixed factor clk declarations.
+ */
+#define CLK_FIXED_FACTOR_HWS(_struct, _name, _parent,                  \
+                            _div, _mult, _flags)                       \
+       struct clk_fixed_factor _struct = {                             \
+               .div            = _div,                                 \
+               .mult           = _mult,                                \
+               .hw.init        = CLK_HW_INIT_HWS(_name,                \
+                                                 _parent,              \
+                                                 &clk_fixed_factor_ops, \
+                                                 _flags),      \
+       }
+
 #ifdef CONFIG_OF
 int of_clk_add_provider(struct device_node *np,
                        struct clk *(*clk_src_get)(struct of_phandle_args *args,