Hi Thara,
some more comments:
On Wed, 20 Jan 2010, Thara Gopinath wrote:
> This patch adds APIs pwrdm_read_next_logic_pwrst and
Shouldn't this be pwrdm_read_logic_retst(), to match the existing code's
pwrdm_set_logic_retst() ?
> pwrdm_read_next_mem_pwrst
and similarly, shouldn't this be pwrdm_read_next_mem_retst() to match the
existing code's pwrdm_read_mem_retst() ?
> for reading the next programmed logic and memory state a powerdomain is
> to hit in event of the next power domain state being retention.
>
> Signed-off-by: Thara Gopinath <th...@ti.com>
> ---
> arch/arm/mach-omap2/powerdomain.c | 71
> +++++++++++++++++++++++++
> arch/arm/plat-omap/include/plat/powerdomain.h | 2 +
> 2 files changed, 73 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/powerdomain.c
> b/arch/arm/mach-omap2/powerdomain.c
> index 26b3f3e..06bf290 100644
> --- a/arch/arm/mach-omap2/powerdomain.c
> +++ b/arch/arm/mach-omap2/powerdomain.c
> @@ -964,6 +964,29 @@ int pwrdm_read_prev_logic_pwrst(struct powerdomain
> *pwrdm)
> }
>
> /**
> + * pwrdm_read_next_logic_pwrst - get next powerdomain logic power state
> + * @pwrdm: struct powerdomain * to get next logic power state
> + *
> + * Return the powerdomain pwrdm's logic power state. Returns -EINVAL
> + * if the powerdomain pointer is null or returns the next logic
> + * power state upon success.
> + */
> +int pwrdm_read_next_logic_pwrst(struct powerdomain *pwrdm)
(see above)
> +{
> + if (!pwrdm)
> + return -EINVAL;
> +
> + /*
> + * The register bit names below may not correspond to the
> + * actual names of the bits in each powerdomain's register,
> + * but the type of value returned is the same for each
> + * powerdomain.
> + */
> + return prm_read_mod_bits_shift(pwrdm->prcm_offs, PM_PWSTCTRL,
> + OMAP3430_LOGICSTATEST);
> +}
> +
> +/**
> * pwrdm_read_mem_pwrst - get current memory bank power state
> * @pwrdm: struct powerdomain * to get current memory bank power state
> * @bank: memory bank number (0-3)
> @@ -1065,6 +1088,54 @@ int pwrdm_read_prev_mem_pwrst(struct powerdomain
> *pwrdm, u8 bank)
> }
>
> /**
> + * pwrdm_read_next_mem_pwrst - get next memory bank power state
> + * @pwrdm: struct powerdomain * to get mext memory bank power state
> + * @bank: memory bank number (0-3)
> + *
> + * Return the powerdomain pwrdm's next memory power state for bank
> + * x. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if
> + * the target memory bank does not exist or is not controllable, or
> + * returns the next memory power state upon success.
> + */
> +int pwrdm_read_next_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
(see above)
> +{
> + u32 m;
> +
> + if (!pwrdm)
> + return -EINVAL;
> +
> + if (pwrdm->banks < (bank + 1))
> + return -EEXIST;
> +
> + /*
> + * The register bit names below may not correspond to the
> + * actual names of the bits in each powerdomain's register,
> + * but the type of value returned is the same for each
> + * powerdomain.
> + */
> + switch (bank) {
> + case 0:
> + m = OMAP3430_SHAREDL1CACHEFLATRETSTATE;
> + break;
> + case 1:
> + m = OMAP3430_L1FLATMEMRETSTATE;
> + break;
> + case 2:
> + m = OMAP3430_SHAREDL2CACHEFLATRETSTATE;
> + break;
> + case 3:
> + m = OMAP3430_SHAREDL2CACHEFLATRETSTATE;
> + break;
> + default:
> + WARN_ON(1); /* should never happen */
> + return -EEXIST;
> + }
> +
> + return prm_read_mod_bits_shift(pwrdm->prcm_offs,
> + PM_PWSTCTRL, m);
> +}
> +
> +/**
> * pwrdm_clear_all_prev_pwrst - clear previous powerstate register for a
> pwrdm
> * @pwrdm: struct powerdomain * to clear
> *
> diff --git a/arch/arm/plat-omap/include/plat/powerdomain.h
> b/arch/arm/plat-omap/include/plat/powerdomain.h
> index 0b96005..7576559 100644
> --- a/arch/arm/plat-omap/include/plat/powerdomain.h
> +++ b/arch/arm/plat-omap/include/plat/powerdomain.h
> @@ -170,8 +170,10 @@ int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8
> bank, u8 pwrst);
>
> int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm);
> int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm);
> +int pwrdm_read_next_logic_pwrst(struct powerdomain *pwrdm);
(as above)
> int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
> int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
> +int pwrdm_read_next_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
(as above)
>
> int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm);
> int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm);
> --
> 1.5.6.3
>
> --
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>
- Paul
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