| Message ID | e78a74cf80fa2ae016719ef14f3a70ae79a78423.1523273291.git.viresh.kumar@linaro.org |
|---|---|
| State | Accepted |
| Commit | 3ba98324e81addf5a1089ffc981e3e2b1630b2a7 |
| Headers | show |
| Series | PM / genpd & OPP: Parse performance state from DT | expand |
On 04/09/2018 05:13 PM, Viresh Kumar wrote: > The genpd core provides an API now to retrieve the performance state > from DT, use that instead of the ->get_pstate() callback. > > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > --- > drivers/opp/core.c | 3 --- > drivers/opp/of.c | 20 +++++++++++++++++++- > 2 files changed, 19 insertions(+), 4 deletions(-) > > diff --git a/drivers/opp/core.c b/drivers/opp/core.c > index 416f54ba7a26..e4ec30ee1493 100644 > --- a/drivers/opp/core.c > +++ b/drivers/opp/core.c > @@ -1056,9 +1056,6 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, > } > } > > - if (opp_table->get_pstate) > - new_opp->pstate = opp_table->get_pstate(dev, new_opp->rate); > - > list_add(&new_opp->node, head); > mutex_unlock(&opp_table->lock); > > diff --git a/drivers/opp/of.c b/drivers/opp/of.c > index de41e68b780f..5de9ec47c6bd 100644 > --- a/drivers/opp/of.c > +++ b/drivers/opp/of.c > @@ -17,6 +17,7 @@ > #include <linux/errno.h> > #include <linux/device.h> > #include <linux/of_device.h> > +#include <linux/pm_domain.h> > #include <linux/slab.h> > #include <linux/export.h> > > @@ -329,6 +330,8 @@ static int _opp_add_static_v2(struct opp_table *opp_table, struct device *dev, > if (!of_property_read_u32(np, "clock-latency-ns", &val)) > new_opp->clock_latency_ns = val; > > + new_opp->pstate = of_dev_pm_genpd_opp_to_performance_state(dev, np); Looks like of_dev_pm_genpd_opp_to_performance_state() can return an error, which we store in here as the opps pstate and go ahead. > + > ret = opp_parse_supplies(new_opp, dev, opp_table); > if (ret) > goto free_opp; > @@ -379,7 +382,8 @@ static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np) > { > struct device_node *np; > struct opp_table *opp_table; > - int ret = 0, count = 0; > + int ret = 0, count = 0, pstate_count = 0; > + struct dev_pm_opp *opp; > > opp_table = _managed_opp(opp_np); > if (opp_table) { > @@ -413,6 +417,20 @@ static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np) > goto put_opp_table; > } > > + list_for_each_entry(opp, &opp_table->opp_list, node) > + pstate_count += !!opp->pstate; > + > + /* Either all or none of the nodes shall have performance state set */ > + if (pstate_count && pstate_count != count) { > + dev_err(dev, "Not all nodes have performance state set (%d: %d)\n", > + count, pstate_count); > + ret = -ENOENT; > + goto put_opp_table; > + } > + > + if (pstate_count) > + opp_table->genpd_performance_state = true; > + > opp_table->np = opp_np; > if (of_property_read_bool(opp_np, "opp-shared")) > opp_table->shared_opp = OPP_TABLE_ACCESS_SHARED; > -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 416f54ba7a26..e4ec30ee1493 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1056,9 +1056,6 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, } } - if (opp_table->get_pstate) - new_opp->pstate = opp_table->get_pstate(dev, new_opp->rate); - list_add(&new_opp->node, head); mutex_unlock(&opp_table->lock); diff --git a/drivers/opp/of.c b/drivers/opp/of.c index de41e68b780f..5de9ec47c6bd 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -17,6 +17,7 @@ #include <linux/errno.h> #include <linux/device.h> #include <linux/of_device.h> +#include <linux/pm_domain.h> #include <linux/slab.h> #include <linux/export.h> @@ -329,6 +330,8 @@ static int _opp_add_static_v2(struct opp_table *opp_table, struct device *dev, if (!of_property_read_u32(np, "clock-latency-ns", &val)) new_opp->clock_latency_ns = val; + new_opp->pstate = of_dev_pm_genpd_opp_to_performance_state(dev, np); + ret = opp_parse_supplies(new_opp, dev, opp_table); if (ret) goto free_opp; @@ -379,7 +382,8 @@ static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np) { struct device_node *np; struct opp_table *opp_table; - int ret = 0, count = 0; + int ret = 0, count = 0, pstate_count = 0; + struct dev_pm_opp *opp; opp_table = _managed_opp(opp_np); if (opp_table) { @@ -413,6 +417,20 @@ static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np) goto put_opp_table; } + list_for_each_entry(opp, &opp_table->opp_list, node) + pstate_count += !!opp->pstate; + + /* Either all or none of the nodes shall have performance state set */ + if (pstate_count && pstate_count != count) { + dev_err(dev, "Not all nodes have performance state set (%d: %d)\n", + count, pstate_count); + ret = -ENOENT; + goto put_opp_table; + } + + if (pstate_count) + opp_table->genpd_performance_state = true; + opp_table->np = opp_np; if (of_property_read_bool(opp_np, "opp-shared")) opp_table->shared_opp = OPP_TABLE_ACCESS_SHARED;