| Message ID | 1571254641-13626-4-git-send-email-thara.gopinath@linaro.org (mailing list archive) |
|---|---|
| State | RFC, archived |
| Headers | show |
| Series | Introduce Power domain based warming device driver | expand |
On Thu, Oct 17, 2019 at 1:07 AM Thara Gopinath <thara.gopinath@linaro.org> wrote: > > Add a hook in thermal_cooling_device_ops to be called after > the cooling device has been initialized and registered > but before binding it to a thermal zone. > > In this patch series it is used to hook up a power domain > to the device pointer of cooling device. > > It can be used for any other relevant late initializations > of a cooling device as well. Please describe WHY this hook is needed. > Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> > --- > drivers/thermal/thermal_core.c | 13 +++++++++++++ > include/linux/thermal.h | 1 + > 2 files changed, 14 insertions(+) > > diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c > index 886e8fa..c2ecb73 100644 > --- a/drivers/thermal/thermal_core.c > +++ b/drivers/thermal/thermal_core.c > @@ -994,6 +994,19 @@ __thermal_cooling_device_register(struct device_node *np, > list_add(&cdev->node, &thermal_cdev_list); > mutex_unlock(&thermal_list_lock); > > + /* Call into cdev late initialization if defined */ > + if (cdev->ops->late_init) { > + result = cdev->ops->late_init(cdev); > + if (result) { > + ida_simple_remove(&thermal_cdev_ida, cdev->id); > + put_device(&cdev->device); > + mutex_lock(&thermal_list_lock); > + list_del(&cdev->node); > + mutex_unlock(&thermal_list_lock); > + return ERR_PTR(result); > + } > + } > + > /* Update binding information for 'this' new cdev */ > bind_cdev(cdev); > > diff --git a/include/linux/thermal.h b/include/linux/thermal.h > index e45659c..e94b3de 100644 > --- a/include/linux/thermal.h > +++ b/include/linux/thermal.h > @@ -125,6 +125,7 @@ struct thermal_cooling_device_ops { > struct thermal_zone_device *, unsigned long, u32 *); > int (*power2state)(struct thermal_cooling_device *, > struct thermal_zone_device *, u32, unsigned long *); > + int (*late_init)(struct thermal_cooling_device *); > }; > > struct thermal_cooling_device { > -- > 2.1.4 >
On 12/03/2019 12:04 PM, Amit Kucheria wrote: > On Thu, Oct 17, 2019 at 1:07 AM Thara Gopinath > <thara.gopinath@linaro.org> wrote: >> >> Add a hook in thermal_cooling_device_ops to be called after >> the cooling device has been initialized and registered >> but before binding it to a thermal zone. >> >> In this patch series it is used to hook up a power domain >> to the device pointer of cooling device. >> >> It can be used for any other relevant late initializations >> of a cooling device as well. > > Please describe WHY this hook is needed. Hi Amit, Thanks for the review. This patch is no longer relevant. I had posted a v4 of this series based on other review comments[1] 1. https://lkml.org/lkml/2019/11/20/355
On Tue, Dec 3, 2019 at 10:34 PM Amit Kucheria <amit.kucheria@verdurent.com> wrote: > > On Thu, Oct 17, 2019 at 1:07 AM Thara Gopinath > <thara.gopinath@linaro.org> wrote: > > > > Add a hook in thermal_cooling_device_ops to be called after > > the cooling device has been initialized and registered > > but before binding it to a thermal zone. > > > > In this patch series it is used to hook up a power domain > > to the device pointer of cooling device. > > > > It can be used for any other relevant late initializations > > of a cooling device as well. > > Please describe WHY this hook is needed. Just noticed you dropped this for v4. Nevermind. > > Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> > > --- > > drivers/thermal/thermal_core.c | 13 +++++++++++++ > > include/linux/thermal.h | 1 + > > 2 files changed, 14 insertions(+) > > > > diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c > > index 886e8fa..c2ecb73 100644 > > --- a/drivers/thermal/thermal_core.c > > +++ b/drivers/thermal/thermal_core.c > > @@ -994,6 +994,19 @@ __thermal_cooling_device_register(struct device_node *np, > > list_add(&cdev->node, &thermal_cdev_list); > > mutex_unlock(&thermal_list_lock); > > > > + /* Call into cdev late initialization if defined */ > > + if (cdev->ops->late_init) { > > + result = cdev->ops->late_init(cdev); > > + if (result) { > > + ida_simple_remove(&thermal_cdev_ida, cdev->id); > > + put_device(&cdev->device); > > + mutex_lock(&thermal_list_lock); > > + list_del(&cdev->node); > > + mutex_unlock(&thermal_list_lock); > > + return ERR_PTR(result); > > + } > > + } > > + > > /* Update binding information for 'this' new cdev */ > > bind_cdev(cdev); > > > > diff --git a/include/linux/thermal.h b/include/linux/thermal.h > > index e45659c..e94b3de 100644 > > --- a/include/linux/thermal.h > > +++ b/include/linux/thermal.h > > @@ -125,6 +125,7 @@ struct thermal_cooling_device_ops { > > struct thermal_zone_device *, unsigned long, u32 *); > > int (*power2state)(struct thermal_cooling_device *, > > struct thermal_zone_device *, u32, unsigned long *); > > + int (*late_init)(struct thermal_cooling_device *); > > }; > > > > struct thermal_cooling_device { > > -- > > 2.1.4 > >
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 886e8fa..c2ecb73 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -994,6 +994,19 @@ __thermal_cooling_device_register(struct device_node *np, list_add(&cdev->node, &thermal_cdev_list); mutex_unlock(&thermal_list_lock); + /* Call into cdev late initialization if defined */ + if (cdev->ops->late_init) { + result = cdev->ops->late_init(cdev); + if (result) { + ida_simple_remove(&thermal_cdev_ida, cdev->id); + put_device(&cdev->device); + mutex_lock(&thermal_list_lock); + list_del(&cdev->node); + mutex_unlock(&thermal_list_lock); + return ERR_PTR(result); + } + } + /* Update binding information for 'this' new cdev */ bind_cdev(cdev); diff --git a/include/linux/thermal.h b/include/linux/thermal.h index e45659c..e94b3de 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -125,6 +125,7 @@ struct thermal_cooling_device_ops { struct thermal_zone_device *, unsigned long, u32 *); int (*power2state)(struct thermal_cooling_device *, struct thermal_zone_device *, u32, unsigned long *); + int (*late_init)(struct thermal_cooling_device *); }; struct thermal_cooling_device {
Add a hook in thermal_cooling_device_ops to be called after the cooling device has been initialized and registered but before binding it to a thermal zone. In this patch series it is used to hook up a power domain to the device pointer of cooling device. It can be used for any other relevant late initializations of a cooling device as well. Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> --- drivers/thermal/thermal_core.c | 13 +++++++++++++ include/linux/thermal.h | 1 + 2 files changed, 14 insertions(+)