From c57acd14ac2d53e40f5c17701c3cc3a092a07b35 Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Tue, 23 Jul 2013 01:49:18 +0200 Subject: clk: mux: Add support for read-only muxes. Some platforms have read-only clock muxes that are preconfigured at reset and cannot be changed at runtime. This patch extends mux clock driver to allow handling such read-only muxes by adding new CLK_MUX_READ_ONLY mux flag. Signed-off-by: Tomasz Figa Signed-off-by: Mike Turquette --- drivers/clk/clk-mux.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/clk') diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c index 614444ca40cd..92f1a1be5319 100644 --- a/drivers/clk/clk-mux.c +++ b/drivers/clk/clk-mux.c @@ -107,6 +107,11 @@ const struct clk_ops clk_mux_ops = { }; EXPORT_SYMBOL_GPL(clk_mux_ops); +const struct clk_ops clk_mux_ro_ops = { + .get_parent = clk_mux_get_parent, +}; +EXPORT_SYMBOL_GPL(clk_mux_ro_ops); + struct clk *clk_register_mux_table(struct device *dev, const char *name, const char **parent_names, u8 num_parents, unsigned long flags, void __iomem *reg, u8 shift, u32 mask, @@ -133,7 +138,10 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name, } init.name = name; - init.ops = &clk_mux_ops; + if (clk_mux_flags & CLK_MUX_READ_ONLY) + init.ops = &clk_mux_ro_ops; + else + init.ops = &clk_mux_ops; init.flags = flags | CLK_IS_BASIC; init.parent_names = parent_names; init.num_parents = num_parents; -- cgit v1.2.3