clk: Add CLK_IS_BASIC flag to identify basic clocks

Most platforms end up using a mix of basic clock types and
some which use clk_hw_foo struct for filling in custom platform
information when the clocks don't fit into basic types supported.

In platform code, its useful to know if a clock is using a basic
type or clk_hw_foo, which helps platforms know if they can
safely use to_clk_hw_foo to derive the clk_hw_foo pointer from
clk_hw.

Mark all basic clocks with a CLK_IS_BASIC flag.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

7 files changed, 7 insertions, 6 deletions

diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 02a4da98176b..a9204c69148d 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -253,7 +253,7 @@ static struct clk *_register_divider(struct device *dev, const char *name,
 
         init.name = name;
         init.ops = &clk_divider_ops;
-        init.flags = flags;
+        init.flags = flags | CLK_IS_BASIC;
         init.parent_names = (parent_name ? &parent_name: NULL);
         init.num_parents = (parent_name ? 1 : 0);
 
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index c8c003e217ad..a4899855c0f6 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -82,7 +82,7 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
 
         init.name = name;
         init.ops = &clk_fixed_factor_ops;
-        init.flags = flags;
+        init.flags = flags | CLK_IS_BASIC;
         init.parent_names = &parent_name;
         init.num_parents = 1;
 
diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c
index cbd246229786..7e1464569727 100644
--- a/drivers/clk/clk-fixed-rate.c
+++ b/drivers/clk/clk-fixed-rate.c
@@ -63,7 +63,7 @@ struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
 
         init.name = name;
         init.ops = &clk_fixed_rate_ops;
-        init.flags = flags;
+        init.flags = flags | CLK_IS_BASIC;
         init.parent_names = (parent_name ? &parent_name: NULL);
         init.num_parents = (parent_name ? 1 : 0);
 
diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 578465e04be6..15114febfd92 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -130,7 +130,7 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
 
         init.name = name;
         init.ops = &clk_gate_ops;
-        init.flags = flags;
+        init.flags = flags | CLK_IS_BASIC;
         init.parent_names = (parent_name ? &parent_name: NULL);
         init.num_parents = (parent_name ? 1 : 0);
 
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index fd36a8ea73d9..508c032edce4 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -106,7 +106,7 @@ struct clk *clk_register_mux(struct device *dev, const char *name,
 
         init.name = name;
         init.ops = &clk_mux_ops;
-        init.flags = flags;
+        init.flags = flags | CLK_IS_BASIC;
         init.parent_names = parent_names;
         init.num_parents = num_parents;
 
diff --git a/include/linux/clk-private.h b/include/linux/clk-private.h
index cc9972d1429c..9c7f5807824b 100644
--- a/include/linux/clk-private.h
+++ b/include/linux/clk-private.h
@@ -64,7 +64,7 @@ struct clk {
                 .parent_names = _parent_names,                  \
                 .num_parents = ARRAY_SIZE(_parent_names),       \
                 .parents = _parents,                            \
-                .flags = _flags,                                \
+                .flags = _flags | CLK_IS_BASIC,                 \
         }
 
 #define DEFINE_CLK_FIXED_RATE(_name, _flags, _rate,             \
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 79caee9f1489..0236f58f3e65 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -25,6 +25,7 @@
 #define CLK_SET_RATE_PARENT     BIT(2) /* propagate rate change up one level */
 #define CLK_IGNORE_UNUSED       BIT(3) /* do not gate even if unused */
 #define CLK_IS_ROOT             BIT(4) /* root clk, has no parent */
+#define CLK_IS_BASIC            BIT(5) /* Basic clk, can't do a to_clk_foo() */
 
 struct clk_hw;