diff options
Diffstat (limited to 'drivers/clk/ti')
| -rw-r--r-- | drivers/clk/ti/clkt_iclk.c | 35 | ||||
| -rw-r--r-- | drivers/clk/ti/clock.h | 1 |
2 files changed, 36 insertions, 0 deletions
diff --git a/drivers/clk/ti/clkt_iclk.c b/drivers/clk/ti/clkt_iclk.c index a03919df00ef..38c36908cf88 100644 --- a/drivers/clk/ti/clkt_iclk.c +++ b/drivers/clk/ti/clkt_iclk.c @@ -18,8 +18,12 @@ #include "clock.h" /* Register offsets */ +#define OMAP24XX_CM_FCLKEN2 0x04 #define CM_AUTOIDLE 0x30 #define CM_ICLKEN 0x10 +#define CM_IDLEST 0x20 + +#define OMAP24XX_CM_IDLEST_VAL 0 /* Private functions */ @@ -51,6 +55,31 @@ void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk) ti_clk_ll_ops->clk_writel(v, r); } +/** + * omap2430_clk_i2chs_find_idlest - return CM_IDLEST info for 2430 I2CHS + * @clk: struct clk * being enabled + * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into + * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into + * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator + * + * OMAP2430 I2CHS CM_IDLEST bits are in CM_IDLEST1_CORE, but the + * CM_*CLKEN bits are in CM_{I,F}CLKEN2_CORE. This custom function + * passes back the correct CM_IDLEST register address for I2CHS + * modules. No return value. + */ +static void omap2430_clk_i2chs_find_idlest(struct clk_hw_omap *clk, + void __iomem **idlest_reg, + u8 *idlest_bit, + u8 *idlest_val) +{ + u32 r; + + r = ((__force u32)clk->enable_reg ^ (OMAP24XX_CM_FCLKEN2 ^ CM_IDLEST)); + *idlest_reg = (__force void __iomem *)r; + *idlest_bit = clk->enable_bit; + *idlest_val = OMAP24XX_CM_IDLEST_VAL; +} + /* Public data */ const struct clk_hw_omap_ops clkhwops_iclk = { @@ -64,3 +93,9 @@ const struct clk_hw_omap_ops clkhwops_iclk_wait = { .find_idlest = omap2_clk_dflt_find_idlest, .find_companion = omap2_clk_dflt_find_companion, }; + +/* 2430 I2CHS has non-standard IDLEST register */ +const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait = { + .find_idlest = omap2430_clk_i2chs_find_idlest, + .find_companion = omap2_clk_dflt_find_companion, +}; diff --git a/drivers/clk/ti/clock.h b/drivers/clk/ti/clock.h index f21538364588..3652c267cf81 100644 --- a/drivers/clk/ti/clock.h +++ b/drivers/clk/ti/clock.h @@ -178,6 +178,7 @@ extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx; extern const struct clk_hw_omap_ops clkhwops_wait; extern const struct clk_hw_omap_ops clkhwops_iclk; extern const struct clk_hw_omap_ops clkhwops_iclk_wait; +extern const struct clk_hw_omap_ops clkhwops_omap2430_i2chs_wait; int omap2_dflt_clk_enable(struct clk_hw *hw); void omap2_dflt_clk_disable(struct clk_hw *hw); |