| Message ID | 20240229-onboard_xvf3500-v6-7-a0aff2947040@wolfvision.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | usb: misc: onboard_hub: add support for XMOS XVF3500 | expand |
On Thu, Feb 29, 2024 at 09:34:50AM +0100, Javier Carrasco wrote: > Most of the functionality this driver provides can be used by non-hub > devices as well. > > To account for the hub-specific code, add a flag to the device data > structure and check its value for hub-specific code. > > The 'always_powered_in_supend' attribute is only available for hub > devices, keeping the driver's default behavior for non-hub devices (keep > on in suspend). > > Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net> > --- > drivers/usb/misc/onboard_usb_dev.c | 25 ++++++++++++++++++++++++- > drivers/usb/misc/onboard_usb_dev.h | 10 ++++++++++ > 2 files changed, 34 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c > index 4ae580445408..f1b174503c44 100644 > --- a/drivers/usb/misc/onboard_usb_dev.c > +++ b/drivers/usb/misc/onboard_usb_dev.c > @@ -261,7 +261,27 @@ static struct attribute *onboard_dev_attrs[] = { > &dev_attr_always_powered_in_suspend.attr, > NULL, > }; > -ATTRIBUTE_GROUPS(onboard_dev); > + > +static umode_t onboard_dev_attrs_are_visible(struct kobject *kobj, > + struct attribute *attr, > + int n) > +{ > + struct device *dev = kobj_to_dev(kobj); > + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); > + > + if (attr == &dev_attr_always_powered_in_suspend.attr && > + !onboard_dev->pdata->is_hub) > + return 0; > + > + return attr->mode; > +} > + > +static const struct attribute_group onboard_dev_group = { > + .is_visible = onboard_dev_attrs_are_visible, > + .attrs = onboard_dev_attrs, > +}; > +__ATTRIBUTE_GROUPS(onboard_dev); > + nit: remove one empty line > > static void onboard_dev_attach_usb_driver(struct work_struct *work) > { > @@ -286,6 +306,9 @@ static int onboard_dev_probe(struct platform_device *pdev) > if (!onboard_dev->pdata) > return -EINVAL; > > + if (!onboard_dev->pdata->is_hub) > + onboard_dev->always_powered_in_suspend = true; > + > onboard_dev->dev = dev; > > err = onboard_dev_get_regulators(onboard_dev); > diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h > index 4da9f3b7f9e9..58cf8c81b2cf 100644 > --- a/drivers/usb/misc/onboard_usb_dev.h > +++ b/drivers/usb/misc/onboard_usb_dev.h > @@ -12,60 +12,70 @@ struct onboard_dev_pdata { > unsigned long reset_us; /* reset pulse width in us */ > unsigned int num_supplies; /* number of supplies */ > const char * const supply_names[MAX_SUPPLIES]; > + bool is_hub; /* true if the device is a HUB */ nit: either drop the comment (the variable name is pretty self explaining), or s/HUB/hub/ ('hub' isn't an acronym). Acked-by: Matthias Kaehlcke <mka@chromium.org>
On 29.02.24 20:52, Matthias Kaehlcke wrote: > On Thu, Feb 29, 2024 at 09:34:50AM +0100, Javier Carrasco wrote: >> Most of the functionality this driver provides can be used by non-hub >> devices as well. >> >> To account for the hub-specific code, add a flag to the device data >> structure and check its value for hub-specific code. >> >> The 'always_powered_in_supend' attribute is only available for hub >> devices, keeping the driver's default behavior for non-hub devices (keep >> on in suspend). >> >> Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net> >> --- >> drivers/usb/misc/onboard_usb_dev.c | 25 ++++++++++++++++++++++++- >> drivers/usb/misc/onboard_usb_dev.h | 10 ++++++++++ >> 2 files changed, 34 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c >> index 4ae580445408..f1b174503c44 100644 >> --- a/drivers/usb/misc/onboard_usb_dev.c >> +++ b/drivers/usb/misc/onboard_usb_dev.c >> @@ -261,7 +261,27 @@ static struct attribute *onboard_dev_attrs[] = { >> &dev_attr_always_powered_in_suspend.attr, >> NULL, >> }; >> -ATTRIBUTE_GROUPS(onboard_dev); >> + >> +static umode_t onboard_dev_attrs_are_visible(struct kobject *kobj, >> + struct attribute *attr, >> + int n) >> +{ >> + struct device *dev = kobj_to_dev(kobj); >> + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); >> + >> + if (attr == &dev_attr_always_powered_in_suspend.attr && >> + !onboard_dev->pdata->is_hub) >> + return 0; >> + >> + return attr->mode; >> +} >> + >> +static const struct attribute_group onboard_dev_group = { >> + .is_visible = onboard_dev_attrs_are_visible, >> + .attrs = onboard_dev_attrs, >> +}; >> +__ATTRIBUTE_GROUPS(onboard_dev); >> + > > nit: remove one empty line > >> >> static void onboard_dev_attach_usb_driver(struct work_struct *work) >> { >> @@ -286,6 +306,9 @@ static int onboard_dev_probe(struct platform_device *pdev) >> if (!onboard_dev->pdata) >> return -EINVAL; >> >> + if (!onboard_dev->pdata->is_hub) >> + onboard_dev->always_powered_in_suspend = true; >> + >> onboard_dev->dev = dev; >> >> err = onboard_dev_get_regulators(onboard_dev); >> diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h >> index 4da9f3b7f9e9..58cf8c81b2cf 100644 >> --- a/drivers/usb/misc/onboard_usb_dev.h >> +++ b/drivers/usb/misc/onboard_usb_dev.h >> @@ -12,60 +12,70 @@ struct onboard_dev_pdata { >> unsigned long reset_us; /* reset pulse width in us */ >> unsigned int num_supplies; /* number of supplies */ >> const char * const supply_names[MAX_SUPPLIES]; >> + bool is_hub; /* true if the device is a HUB */ > > nit: either drop the comment (the variable name is pretty self explaining), > or s/HUB/hub/ ('hub' isn't an acronym). > > Acked-by: Matthias Kaehlcke <mka@chromium.org> To be honest, I added the description to follow the same pattern used for the previous fields: unsigned long reset_us; /* reset pulse width in us */ unsigned int num_supplies; /* number of supplies */ Best regards, Javier Carrasco
diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c index 4ae580445408..f1b174503c44 100644 --- a/drivers/usb/misc/onboard_usb_dev.c +++ b/drivers/usb/misc/onboard_usb_dev.c @@ -261,7 +261,27 @@ static struct attribute *onboard_dev_attrs[] = { &dev_attr_always_powered_in_suspend.attr, NULL, }; -ATTRIBUTE_GROUPS(onboard_dev); + +static umode_t onboard_dev_attrs_are_visible(struct kobject *kobj, + struct attribute *attr, + int n) +{ + struct device *dev = kobj_to_dev(kobj); + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + + if (attr == &dev_attr_always_powered_in_suspend.attr && + !onboard_dev->pdata->is_hub) + return 0; + + return attr->mode; +} + +static const struct attribute_group onboard_dev_group = { + .is_visible = onboard_dev_attrs_are_visible, + .attrs = onboard_dev_attrs, +}; +__ATTRIBUTE_GROUPS(onboard_dev); + static void onboard_dev_attach_usb_driver(struct work_struct *work) { @@ -286,6 +306,9 @@ static int onboard_dev_probe(struct platform_device *pdev) if (!onboard_dev->pdata) return -EINVAL; + if (!onboard_dev->pdata->is_hub) + onboard_dev->always_powered_in_suspend = true; + onboard_dev->dev = dev; err = onboard_dev_get_regulators(onboard_dev); diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h index 4da9f3b7f9e9..58cf8c81b2cf 100644 --- a/drivers/usb/misc/onboard_usb_dev.h +++ b/drivers/usb/misc/onboard_usb_dev.h @@ -12,60 +12,70 @@ struct onboard_dev_pdata { unsigned long reset_us; /* reset pulse width in us */ unsigned int num_supplies; /* number of supplies */ const char * const supply_names[MAX_SUPPLIES]; + bool is_hub; /* true if the device is a HUB */ }; static const struct onboard_dev_pdata microchip_usb424_data = { .reset_us = 1, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata microchip_usb5744_data = { .reset_us = 0, .num_supplies = 2, .supply_names = { "vdd", "vdd2" }, + .is_hub = true, }; static const struct onboard_dev_pdata realtek_rts5411_data = { .reset_us = 0, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata ti_tusb8041_data = { .reset_us = 3000, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata cypress_hx3_data = { .reset_us = 10000, .num_supplies = 2, .supply_names = { "vdd", "vdd2" }, + .is_hub = true, }; static const struct onboard_dev_pdata cypress_hx2vl_data = { .reset_us = 1, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata genesys_gl850g_data = { .reset_us = 3, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata genesys_gl852g_data = { .reset_us = 50, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct onboard_dev_pdata vialab_vl817_data = { .reset_us = 10, .num_supplies = 1, .supply_names = { "vdd" }, + .is_hub = true, }; static const struct of_device_id onboard_dev_match[] = {
Most of the functionality this driver provides can be used by non-hub devices as well. To account for the hub-specific code, add a flag to the device data structure and check its value for hub-specific code. The 'always_powered_in_supend' attribute is only available for hub devices, keeping the driver's default behavior for non-hub devices (keep on in suspend). Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net> --- drivers/usb/misc/onboard_usb_dev.c | 25 ++++++++++++++++++++++++- drivers/usb/misc/onboard_usb_dev.h | 10 ++++++++++ 2 files changed, 34 insertions(+), 1 deletion(-)