Allow domain states to hold additional state related data in a u32 value. This may be used by the platform driver.
Signed-off-by: Lina Iyer <[email protected]> --- Documentation/devicetree/bindings/power/power_domain.txt | 6 ++++++ drivers/base/power/domain.c | 6 ++++++ include/linux/pm_domain.h | 1 + 3 files changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt index e2f542e..ecfaf44 100644 --- a/Documentation/devicetree/bindings/power/power_domain.txt +++ b/Documentation/devicetree/bindings/power/power_domain.txt @@ -67,6 +67,12 @@ have the following properties - If omitted, this is assumed to be equal to: entry-latency-us + exit-latency-us + - state-param: + Usage: Optional + Value type: <prop-encoded-array> + Definition: A u32 value as defined by the state. May be used + by the driver to hold state related u32 data. + Example: power: power-controller@12340000 { diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index fe1be88..3fb4c93 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1245,6 +1245,7 @@ static int genpd_alloc_states_data(struct generic_pm_domain *genpd, st[i].power_on_latency_ns; genpd->states[i].power_off_latency_ns = st[i].power_off_latency_ns; + genpd->states[i].param = st[i].param; } /* @@ -1527,6 +1528,7 @@ static int of_get_genpd_power_state(struct genpd_power_state *genpd_state, const struct of_device_id *match_id; int err = 0; u32 latency; + u32 param; match_id = of_match_node(power_state_match, state_node); if (!match_id) @@ -1567,6 +1569,10 @@ static int of_get_genpd_power_state(struct genpd_power_state *genpd_state, return -EINVAL; } + err = of_property_read_u32(state_node, "state-param", ¶m); + if (!err) + genpd_state->param = param; + genpd_state->power_off_latency_ns = 1000 * latency; return 0; diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index e425911..15df24c 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -41,6 +41,7 @@ struct genpd_power_state { char *name; s64 power_off_latency_ns; s64 power_on_latency_ns; + u32 param; }; struct generic_pm_domain { -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
