Am Donnerstag, 18. Februar 2016, 11:07:13 schrieb Elaine Zhang:
> Not all new socs need to handle idle states on domain state changes,
> so add the possibility to make them optional.
>
> Signed-off-by: Elaine Zhang <zhangqing at rock-chips.com>
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>
What's up with the Signed-off-bys? I remember creating the draft of this
change, so either my authorship of the patch should be retained or the
Signed-off-by with my name removed :-)
git send-email will keep patch authorship nicely.
> ---
> drivers/soc/rockchip/pm_domains.c | 11 ++++++++---
> 1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/soc/rockchip/pm_domains.c
> b/drivers/soc/rockchip/pm_domains.c index 6cdffb1..3dcc611 100644
> --- a/drivers/soc/rockchip/pm_domains.c
> +++ b/drivers/soc/rockchip/pm_domains.c
> @@ -63,14 +63,16 @@ struct rockchip_pmu {
> };
>
> #define to_rockchip_pd(gpd) container_of(gpd, struct rockchip_pm_domain,
> genpd) +#define NULL_BIT -32
> +#define OVERFLOW_MASK 32
I don't really understand why you need this NULL_BIT / OVERFLOW_MASK.
Defining the unset things to -1 should work nicely as well and is already
regularly used elsewhere - so people will already know this scheme. That way
you also don't need to introduce two new constants someone will have to look
up later.
>
> #define DOMAIN(pwr, status, req, idle, ack) \
> { \
> .pwr_mask = BIT(pwr), \
> .status_mask = BIT(status), \
> - .req_mask = BIT(req), \
> - .idle_mask = BIT(idle), \
> - .ack_mask = BIT(ack), \
> + .req_mask = (req >= 0) ? BIT(req) : OVERFLOW_MASK, \
> + .idle_mask = (idle >= 0) ? BIT(idle) : OVERFLOW_MASK, \
> + .ack_mask = (ack >= 0) ? BIT(ack) : OVERFLOW_MASK, \
> }
>
> #define DOMAIN_RK3288(pwr, status, req) \
> @@ -96,6 +98,9 @@ static int rockchip_pmu_set_idle_request(struct
> rockchip_pm_domain *pd, struct rockchip_pmu *pmu = pd->pmu;
> unsigned int val;
>
> + if (pd_info->req_mask >= OVERFLOW_MASK)
> + return 0;
> +
> regmap_update_bits(pmu->regmap, pmu->info->req_offset,
> pd_info->req_mask, idle ? -1U : 0);
