clk: add table lookup to mux

Add a table lookup feature to the mux clock. Also allow arbitrary masks
instead of the width. This will be used by some clocks on Tegra114. Also
adapt the tegra periph clk because it uses struct clk_mux directly.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

2 files changed, 9 insertions, 2 deletions

diff --git a/include/linux/clk-private.h b/include/linux/clk-private.h
index 9c7f5807824b..dd7adff76e81 100644
--- a/include/linux/clk-private.h
+++ b/include/linux/clk-private.h
@@ -152,7 +152,7 @@ struct clk {
                 },                                              \
                 .reg = _reg,                                    \
                 .shift = _shift,                                \
-                .width = _width,                                \
+                .mask = BIT(_width) - 1,                        \
                 .flags = _mux_flags,                            \
                 .lock = _lock,                                  \
         };                                                      \
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 56e6cc12c796..63ba3b740794 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -297,8 +297,9 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
 struct clk_mux {
         struct clk_hw   hw;
         void __iomem    *reg;
+        u32             *table;
+        u32             mask;
         u8              shift;
-        u8              width;
         u8              flags;
         spinlock_t      *lock;
 };
@@ -307,11 +308,17 @@ struct clk_mux {
 #define CLK_MUX_INDEX_BIT               BIT(1)
 
 extern const struct clk_ops clk_mux_ops;
+
 struct clk *clk_register_mux(struct device *dev, const char *name,
                 const char **parent_names, u8 num_parents, unsigned long flags,
                 void __iomem *reg, u8 shift, u8 width,
                 u8 clk_mux_flags, spinlock_t *lock);
 
+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,
+                u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+
 /**
  * struct clk_fixed_factor - fixed multiplier and divider clock
  *