diff options
| author | Paul Walmsley <paul@pwsan.com> | 2011-02-25 15:49:53 -0700 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2011-03-07 20:02:05 -0700 |
| commit | 0fd0c21be71293d8a54d9075b18b5a25a1868057 (patch) | |
| tree | ebf500cb2d7b0c104fc1e1c190aa3b2457d987c8 /arch/arm/mach-omap2/cm2xxx_3xxx.c | |
| parent | c6461f5c5970833cf28c5096cdfc7a095eb3bbb5 (diff) | |
OMAP2: clock: add DPLL autoidle support
Add the necessary code and data to allow the clock framework to enable
and disable the OMAP2 DPLL autoidle state. This is so the direct
register access can be moved out of the mach-omap2/pm24xx.c code, and other
code that needs to control this (e.g., CPUIdle) can do so via an API.
As part of this patch, remove the pm24xx.c code that formerly wrote
directly to the autoidle bits.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/cm2xxx_3xxx.c')
| -rw-r--r-- | arch/arm/mach-omap2/cm2xxx_3xxx.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/cm2xxx_3xxx.c b/arch/arm/mach-omap2/cm2xxx_3xxx.c index 96954aa4867..6b0c7c85ef5 100644 --- a/arch/arm/mach-omap2/cm2xxx_3xxx.c +++ b/arch/arm/mach-omap2/cm2xxx_3xxx.c @@ -25,6 +25,10 @@ #include "cm-regbits-24xx.h" #include "cm-regbits-34xx.h" +/* CM_AUTOIDLE_PLL.AUTO_* bit values */ +#define DPLL_AUTOIDLE_DISABLE 0x0 +#define OMAP2XXX_DPLL_AUTOIDLE_LOW_POWER_STOP 0x3 + static const u8 cm_idlest_offs[] = { CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3 }; @@ -125,6 +129,29 @@ void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask) _write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, module, mask); } +/* + * DPLL autoidle control + */ + +static void _omap2xxx_set_dpll_autoidle(u8 m) +{ + u32 v; + + v = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE); + v &= ~OMAP24XX_AUTO_DPLL_MASK; + v |= m << OMAP24XX_AUTO_DPLL_SHIFT; + omap2_cm_write_mod_reg(v, PLL_MOD, CM_AUTOIDLE); +} + +void omap2xxx_cm_set_dpll_disable_autoidle(void) +{ + _omap2xxx_set_dpll_autoidle(OMAP2XXX_DPLL_AUTOIDLE_LOW_POWER_STOP); +} + +void omap2xxx_cm_set_dpll_auto_low_power_stop(void) +{ + _omap2xxx_set_dpll_autoidle(DPLL_AUTOIDLE_DISABLE); +} /* * |