* [patch] Disable PMBus status check for DPS400 PSU controller @ 2016-07-21 14:55 Vadim Pasternak 2016-07-21 13:41 ` Guenter Roeck 0 siblings, 1 reply; 4+ messages in thread From: Vadim Pasternak @ 2016-07-21 14:55 UTC (permalink / raw) To: linux; +Cc: jdelvare, linux-hwmon, linux-kernel, jiri, Vadim Pasternak pmbus/dps400: disable PMBus status check through platform data structure to provide support for PSU DPS-460, DPS-800 from Delta Electronics, INC and for SGD009 from Acbel Polytech, INC. These devices do not support the STATUS_CML register, and reports communication error in response to this command. For this reason for these controllers, the status register check is disabled. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> --- drivers/hwmon/pmbus/pmbus.c | 16 ++++++++++++++++ drivers/hwmon/pmbus/pmbus_core.c | 3 +++ 2 files changed, 19 insertions(+) diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c index 0a74991..44c736a 100644 --- a/drivers/hwmon/pmbus/pmbus.c +++ b/drivers/hwmon/pmbus/pmbus.c @@ -25,6 +25,7 @@ #include <linux/slab.h> #include <linux/mutex.h> #include <linux/i2c.h> +#include <linux/i2c/pmbus.h> #include "pmbus.h" /* @@ -167,14 +168,26 @@ static int pmbus_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct pmbus_driver_info *info; + struct pmbus_platform_data *pdata = NULL; + struct device *dev = &client->dev; info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info), GFP_KERNEL); if (!info) return -ENOMEM; + if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps460") || + !strcmp(id->name, "sgd009")) { + pdata = kzalloc(sizeof(struct pmbus_platform_data), GFP_KERNEL); + if (!pdata) { + kfree(info); + return -ENOMEM; + } + pdata->flags = PMBUS_SKIP_STATUS_CHECK; + } info->pages = id->driver_data; info->identify = pmbus_identify; + dev->platform_data = pdata; return pmbus_do_probe(client, id, info); } @@ -199,6 +212,9 @@ static const struct i2c_device_id pmbus_id[] = { {"tps544c20", 1}, {"tps544c25", 1}, {"udt020", 1}, + {"dps460", 1}, + {"dps800", 1}, + {"sgd009", 1}, {} }; diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index ba59eae..3d98070 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -1931,8 +1931,11 @@ EXPORT_SYMBOL_GPL(pmbus_do_probe); int pmbus_do_remove(struct i2c_client *client) { struct pmbus_data *data = i2c_get_clientdata(client); + const struct pmbus_platform_data *pdata = + dev_get_platdata(&client->dev); hwmon_device_unregister(data->hwmon_dev); kfree(data->group.attrs); + kfree(pdata); return 0; } EXPORT_SYMBOL_GPL(pmbus_do_remove); -- 2.1.4 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [patch] Disable PMBus status check for DPS400 PSU controller 2016-07-21 14:55 [patch] Disable PMBus status check for DPS400 PSU controller Vadim Pasternak @ 2016-07-21 13:41 ` Guenter Roeck 2016-07-21 14:08 ` Vadim Pasternak 0 siblings, 1 reply; 4+ messages in thread From: Guenter Roeck @ 2016-07-21 13:41 UTC (permalink / raw) To: Vadim Pasternak; +Cc: jdelvare, linux-hwmon, linux-kernel, jiri Hi Vadim, On 07/21/2016 07:55 AM, Vadim Pasternak wrote: > pmbus/dps400: disable PMBus status check through platform data structure to > provide support for PSU DPS-460, DPS-800 from Delta Electronics, INC and for > SGD009 from Acbel Polytech, INC. > These devices do not support the STATUS_CML register, and reports communication > error in response to this command. > For this reason for these controllers, the status register check is disabled. > The subject should be "hwmon: (pmbus) Add explicit support for DPS-460, DPS-800, and SGD009", followed by something like "Provide support for PSU DPS-460, DPS-800 from Delta Electronics, INC and for SGD009 from Acbel Polytech, INC. These devices do not support the STATUS_CML register and report a communication error in response to this command. For this reason, the status register check is disabled for these controllers." > Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> > Unnecessary blank line > Reviewed-by: Jiri Pirko <jiri@mellanox.com> > --- > drivers/hwmon/pmbus/pmbus.c | 16 ++++++++++++++++ > drivers/hwmon/pmbus/pmbus_core.c | 3 +++ > 2 files changed, 19 insertions(+) > > diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c > index 0a74991..44c736a 100644 > --- a/drivers/hwmon/pmbus/pmbus.c > +++ b/drivers/hwmon/pmbus/pmbus.c > @@ -25,6 +25,7 @@ > #include <linux/slab.h> > #include <linux/mutex.h> > #include <linux/i2c.h> > +#include <linux/i2c/pmbus.h> > #include "pmbus.h" > > /* > @@ -167,14 +168,26 @@ static int pmbus_probe(struct i2c_client *client, > const struct i2c_device_id *id) > { > struct pmbus_driver_info *info; > + struct pmbus_platform_data *pdata = NULL; > + struct device *dev = &client->dev; > > info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info), > GFP_KERNEL); > if (!info) > return -ENOMEM; > + if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps460") || Should the second string be dps800 ? > + !strcmp(id->name, "sgd009")) { > + pdata = kzalloc(sizeof(struct pmbus_platform_data), GFP_KERNEL); Please use devm_kzalloc(). > + if (!pdata) { > + kfree(info); info was allocated with devm_kzalloc() and thus does not need kfree (besides, if at all, it would have to be devm_kfree). > + return -ENOMEM; > + } > + pdata->flags = PMBUS_SKIP_STATUS_CHECK; > + } > > info->pages = id->driver_data; > info->identify = pmbus_identify; > + dev->platform_data = pdata; > > return pmbus_do_probe(client, id, info); > } > @@ -199,6 +212,9 @@ static const struct i2c_device_id pmbus_id[] = { > {"tps544c20", 1}, > {"tps544c25", 1}, > {"udt020", 1}, > + {"dps460", 1}, > + {"dps800", 1}, > + {"sgd009", 1}, Please list in alphabetic order. > {} > }; > > diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c > index ba59eae..3d98070 100644 > --- a/drivers/hwmon/pmbus/pmbus_core.c > +++ b/drivers/hwmon/pmbus/pmbus_core.c > @@ -1931,8 +1931,11 @@ EXPORT_SYMBOL_GPL(pmbus_do_probe); > int pmbus_do_remove(struct i2c_client *client) > { > struct pmbus_data *data = i2c_get_clientdata(client); > + const struct pmbus_platform_data *pdata = > + dev_get_platdata(&client->dev); > hwmon_device_unregister(data->hwmon_dev); > kfree(data->group.attrs); > + kfree(pdata); > return 0; > } > EXPORT_SYMBOL_GPL(pmbus_do_remove); > ^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: [patch] Disable PMBus status check for DPS400 PSU controller 2016-07-21 13:41 ` Guenter Roeck @ 2016-07-21 14:08 ` Vadim Pasternak 2016-07-21 14:31 ` Guenter Roeck 0 siblings, 1 reply; 4+ messages in thread From: Vadim Pasternak @ 2016-07-21 14:08 UTC (permalink / raw) To: Guenter Roeck Cc: jdelvare@suse.com, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, jiri@resnulli.us > -----Original Message----- > From: Guenter Roeck [mailto:linux@roeck-us.net] > Sent: Thursday, July 21, 2016 4:42 PM > To: Vadim Pasternak <vadimp@mellanox.com> > Cc: jdelvare@suse.com; linux-hwmon@vger.kernel.org; linux- > kernel@vger.kernel.org; jiri@resnulli.us > Subject: Re: [patch] Disable PMBus status check for DPS400 PSU controller > Hi Guenter, Thank you very much for your reply. > Hi Vadim, > > On 07/21/2016 07:55 AM, Vadim Pasternak wrote: > > pmbus/dps400: disable PMBus status check through platform data > > structure to provide support for PSU DPS-460, DPS-800 from Delta > > Electronics, INC and for > > SGD009 from Acbel Polytech, INC. > > These devices do not support the STATUS_CML register, and reports > > communication error in response to this command. > > For this reason for these controllers, the status register check is disabled. > > > > The subject should be "hwmon: (pmbus) Add explicit support for DPS-460, DPS- > 800, and SGD009", followed by something like > > "Provide support for PSU DPS-460, DPS-800 from Delta Electronics, INC and for > SGD009 from Acbel Polytech, INC. > These devices do not support the STATUS_CML register and report a > communication error in response to this command. For this reason, the status > register check is disabled for these controllers." > > > Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> > > > Unnecessary blank line > > > Reviewed-by: Jiri Pirko <jiri@mellanox.com> > > --- > > drivers/hwmon/pmbus/pmbus.c | 16 ++++++++++++++++ > > drivers/hwmon/pmbus/pmbus_core.c | 3 +++ > > 2 files changed, 19 insertions(+) > > > > diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c > > index 0a74991..44c736a 100644 > > --- a/drivers/hwmon/pmbus/pmbus.c > > +++ b/drivers/hwmon/pmbus/pmbus.c > > @@ -25,6 +25,7 @@ > > #include <linux/slab.h> > > #include <linux/mutex.h> > > #include <linux/i2c.h> > > +#include <linux/i2c/pmbus.h> > > #include "pmbus.h" > > > > /* > > @@ -167,14 +168,26 @@ static int pmbus_probe(struct i2c_client *client, > > const struct i2c_device_id *id) > > { > > struct pmbus_driver_info *info; > > + struct pmbus_platform_data *pdata = NULL; > > + struct device *dev = &client->dev; > > > > info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info), > > GFP_KERNEL); > > if (!info) > > return -ENOMEM; > > + if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps460") || > > Should the second string be dps800 ? > > > + !strcmp(id->name, "sgd009")) { > > + pdata = kzalloc(sizeof(struct pmbus_platform_data), > GFP_KERNEL); > > Please use devm_kzalloc(). > > > + if (!pdata) { > > + kfree(info); > > info was allocated with devm_kzalloc() and thus does not need kfree (besides, if > at all, it would have to be devm_kfree). > > > + return -ENOMEM; > > + } > > + pdata->flags = PMBUS_SKIP_STATUS_CHECK; > > + } > > > > info->pages = id->driver_data; > > info->identify = pmbus_identify; > > + dev->platform_data = pdata; > > > > return pmbus_do_probe(client, id, info); > > } > > @@ -199,6 +212,9 @@ static const struct i2c_device_id pmbus_id[] = { > > {"tps544c20", 1}, > > {"tps544c25", 1}, > > {"udt020", 1}, > > + {"dps460", 1}, > > + {"dps800", 1}, > > + {"sgd009", 1}, > > Please list in alphabetic order. > > > {} > > }; > > > > diff --git a/drivers/hwmon/pmbus/pmbus_core.c > > b/drivers/hwmon/pmbus/pmbus_core.c > > index ba59eae..3d98070 100644 > > --- a/drivers/hwmon/pmbus/pmbus_core.c > > +++ b/drivers/hwmon/pmbus/pmbus_core.c > > @@ -1931,8 +1931,11 @@ EXPORT_SYMBOL_GPL(pmbus_do_probe); > > int pmbus_do_remove(struct i2c_client *client) > > { > > struct pmbus_data *data = i2c_get_clientdata(client); > > + const struct pmbus_platform_data *pdata = > > + dev_get_platdata(&client->dev); > > hwmon_device_unregister(data->hwmon_dev); > > kfree(data->group.attrs); > > + kfree(pdata); So, if I use in allocation pdata = devm_kzalloc(&client->dev, sizeof(struct pmbus_platform_data), GFP_KERNEL); I also can drop the above three lines, right? > > return 0; > > } > > EXPORT_SYMBOL_GPL(pmbus_do_remove); > > ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [patch] Disable PMBus status check for DPS400 PSU controller 2016-07-21 14:08 ` Vadim Pasternak @ 2016-07-21 14:31 ` Guenter Roeck 0 siblings, 0 replies; 4+ messages in thread From: Guenter Roeck @ 2016-07-21 14:31 UTC (permalink / raw) To: Vadim Pasternak Cc: jdelvare@suse.com, linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, jiri@resnulli.us On 07/21/2016 07:08 AM, Vadim Pasternak wrote: [ ... ] >>> }; >>> >>> diff --git a/drivers/hwmon/pmbus/pmbus_core.c >>> b/drivers/hwmon/pmbus/pmbus_core.c >>> index ba59eae..3d98070 100644 >>> --- a/drivers/hwmon/pmbus/pmbus_core.c >>> +++ b/drivers/hwmon/pmbus/pmbus_core.c >>> @@ -1931,8 +1931,11 @@ EXPORT_SYMBOL_GPL(pmbus_do_probe); >>> int pmbus_do_remove(struct i2c_client *client) >>> { >>> struct pmbus_data *data = i2c_get_clientdata(client); >>> + const struct pmbus_platform_data *pdata = >>> + dev_get_platdata(&client->dev); >>> hwmon_device_unregister(data->hwmon_dev); >>> kfree(data->group.attrs); >>> + kfree(pdata); > > So, if I use in allocation > pdata = devm_kzalloc(&client->dev, > sizeof(struct pmbus_platform_data), > GFP_KERNEL); > I also can drop the above three lines, right? > Correct. Guenter ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-07-21 19:09 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-07-21 14:55 [patch] Disable PMBus status check for DPS400 PSU controller Vadim Pasternak 2016-07-21 13:41 ` Guenter Roeck 2016-07-21 14:08 ` Vadim Pasternak 2016-07-21 14:31 ` Guenter Roeck
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