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clk: ti: add support for register read-modify-write low-level operation

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Useful for changing few bits on a register, this makes sure for example
that the operation is done atomically in case of syscon.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
This commit is contained in:
Tero Kristo
2017-07-26 16:47:27 +03:00
parent be02637f6b
commit 4902c2025b
2 changed files with 26 additions and 0 deletions
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2
include/linux/clk/ti.h
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@@ -211,6 +211,7 @@ enum {
* struct ti_clk_ll_ops - low-level ops for clocks
* @clk_readl: pointer to register read function
* @clk_writel: pointer to register write function
* @clk_rmw: pointer to register read-modify-write function
* @clkdm_clk_enable: pointer to clockdomain enable function
* @clkdm_clk_disable: pointer to clockdomain disable function
* @clkdm_lookup: pointer to clockdomain lookup function
@@ -226,6 +227,7 @@ enum {
struct ti_clk_ll_ops {
u32 (*clk_readl)(const struct clk_omap_reg *reg);
void (*clk_writel)(u32 val, const struct clk_omap_reg *reg);
void (*clk_rmw)(u32 val, u32 mask, const struct clk_omap_reg *reg);
int (*clkdm_clk_enable)(struct clockdomain *clkdm, struct clk *clk);
int (*clkdm_clk_disable)(struct clockdomain *clkdm,
struct clk *clk);