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author | Shawn Guo <shawn.guo@freescale.com> | 2014-04-18 15:55:16 +0800 |
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committer | Shawn Guo <shawn.guo@freescale.com> | 2014-05-12 22:58:48 +0800 |
commit | 54ee1471f82047885ec575559cb7c8466adcbef4 (patch) | |
tree | 38d9e794424934f9ca173fb03f65692d904cd2d9 | |
parent | 1e56f8945d17a3a55b7d4c4dd9debeda8e68af8e (diff) | |
download | op-kernel-dev-54ee1471f82047885ec575559cb7c8466adcbef4.zip op-kernel-dev-54ee1471f82047885ec575559cb7c8466adcbef4.tar.gz |
ARM: imx: define struct clk_gate2 on our own
The imx clk-gate2 driver implements an i.MX specific gate clock, which
has two bits controlling the gate states. While this is a completely
separate gate driver from the common clk-gate one, it reuses the common
clk_gate structure. Such reusing makes the extending of clk_gate2
clumsy. Let's define struct clk_gate2 on our own to make the driver
independent of the common clk-gate one, and ease the clk_gate2 extending
at a later time.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
-rw-r--r-- | arch/arm/mach-imx/clk-gate2.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/arch/arm/mach-imx/clk-gate2.c b/arch/arm/mach-imx/clk-gate2.c index a2ecc00..7e98ccb 100644 --- a/arch/arm/mach-imx/clk-gate2.c +++ b/arch/arm/mach-imx/clk-gate2.c @@ -27,11 +27,19 @@ * parent - fixed parent. No clk_set_parent support */ -#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw) +struct clk_gate2 { + struct clk_hw hw; + void __iomem *reg; + u8 bit_idx; + u8 flags; + spinlock_t *lock; +}; + +#define to_clk_gate2(_hw) container_of(_hw, struct clk_gate2, hw) static int clk_gate2_enable(struct clk_hw *hw) { - struct clk_gate *gate = to_clk_gate(hw); + struct clk_gate2 *gate = to_clk_gate2(hw); u32 reg; unsigned long flags = 0; @@ -50,7 +58,7 @@ static int clk_gate2_enable(struct clk_hw *hw) static void clk_gate2_disable(struct clk_hw *hw) { - struct clk_gate *gate = to_clk_gate(hw); + struct clk_gate2 *gate = to_clk_gate2(hw); u32 reg; unsigned long flags = 0; @@ -68,7 +76,7 @@ static void clk_gate2_disable(struct clk_hw *hw) static int clk_gate2_is_enabled(struct clk_hw *hw) { u32 reg; - struct clk_gate *gate = to_clk_gate(hw); + struct clk_gate2 *gate = to_clk_gate2(hw); reg = readl(gate->reg); @@ -89,15 +97,15 @@ struct clk *clk_register_gate2(struct device *dev, const char *name, void __iomem *reg, u8 bit_idx, u8 clk_gate2_flags, spinlock_t *lock) { - struct clk_gate *gate; + struct clk_gate2 *gate; struct clk *clk; struct clk_init_data init; - gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL); + gate = kzalloc(sizeof(struct clk_gate2), GFP_KERNEL); if (!gate) return ERR_PTR(-ENOMEM); - /* struct clk_gate assignments */ + /* struct clk_gate2 assignments */ gate->reg = reg; gate->bit_idx = bit_idx; gate->flags = clk_gate2_flags; |