diff options
| -rw-r--r-- | drivers/clk/clk-mux.c | 22 | ||||
| -rw-r--r-- | include/linux/clk-provider.h | 4 |
2 files changed, 23 insertions, 3 deletions
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c index 2ad2df2e8909..61ad331b7ff4 100644 --- a/drivers/clk/clk-mux.c +++ b/drivers/clk/clk-mux.c @@ -23,6 +23,22 @@ * parent - parent is adjustable through clk_set_parent */ +static inline u32 clk_mux_readl(struct clk_mux *mux) +{ + if (mux->flags & CLK_MUX_BIG_ENDIAN) + return ioread32be(mux->reg); + + return clk_readl(mux->reg); +} + +static inline void clk_mux_writel(struct clk_mux *mux, u32 val) +{ + if (mux->flags & CLK_MUX_BIG_ENDIAN) + iowrite32be(val, mux->reg); + else + clk_writel(val, mux->reg); +} + int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags, unsigned int val) { @@ -73,7 +89,7 @@ static u8 clk_mux_get_parent(struct clk_hw *hw) struct clk_mux *mux = to_clk_mux(hw); u32 val; - val = clk_readl(mux->reg) >> mux->shift; + val = clk_mux_readl(mux) >> mux->shift; val &= mux->mask; return clk_mux_val_to_index(hw, mux->table, mux->flags, val); @@ -94,12 +110,12 @@ static int clk_mux_set_parent(struct clk_hw *hw, u8 index) if (mux->flags & CLK_MUX_HIWORD_MASK) { reg = mux->mask << (mux->shift + 16); } else { - reg = clk_readl(mux->reg); + reg = clk_mux_readl(mux); reg &= ~(mux->mask << mux->shift); } val = val << mux->shift; reg |= val; - clk_writel(reg, mux->reg); + clk_mux_writel(mux, reg); if (mux->lock) spin_unlock_irqrestore(mux->lock, flags); diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 0bc6d6f80b1a..4ae2257b63c6 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -509,6 +509,9 @@ void clk_hw_unregister_divider(struct clk_hw *hw); * indicate changing mux bits. * CLK_MUX_ROUND_CLOSEST - Use the parent rate that is closest to the desired * frequency. + * CLK_MUX_BIG_ENDIAN - By default little endian register accesses are used for + * the mux register. Setting this flag makes the register accesses big + * endian. */ struct clk_mux { struct clk_hw hw; @@ -527,6 +530,7 @@ struct clk_mux { #define CLK_MUX_HIWORD_MASK BIT(2) #define CLK_MUX_READ_ONLY BIT(3) /* mux can't be changed */ #define CLK_MUX_ROUND_CLOSEST BIT(4) +#define CLK_MUX_BIG_ENDIAN BIT(5) extern const struct clk_ops clk_mux_ops; extern const struct clk_ops clk_mux_ro_ops; |