diff options
| author | Johan Hovold <johan@hovoldconsulting.com> | 2016-07-19 15:24:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-07-19 19:03:32 -0700 |
| commit | 1bb61840c4db64e27f0077dcfc5389e662022d40 (patch) | |
| tree | e3aa4d1007bc2b19624d1ebb357a605ef5d04b12 /drivers/staging/greybus/interface.c | |
| parent | d29b67d44a7cf6d02e7319c0e5a4b729a0aa00e7 (diff) | |
greybus: interface: add interface-type attribute
Add an interface-type string attribute that represents the detected
interface type as either "dummy", "unipro", "greybus", or "unknown".
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/interface.c')
| -rw-r--r-- | drivers/staging/greybus/interface.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/staging/greybus/interface.c b/drivers/staging/greybus/interface.c index b3bd96e43128..1d50877bb212 100644 --- a/drivers/staging/greybus/interface.c +++ b/drivers/staging/greybus/interface.c @@ -491,6 +491,27 @@ static ssize_t power_now_show(struct device *dev, } static DEVICE_ATTR_RO(power_now); +static const char *gb_interface_type_string(struct gb_interface *intf) +{ + static const char * const types[] = { + [GB_SVC_INTF_TYPE_UNKNOWN] = "unknown", + [GB_SVC_INTF_TYPE_DUMMY] = "dummy", + [GB_SVC_INTF_TYPE_UNIPRO] = "unipro", + [GB_SVC_INTF_TYPE_GREYBUS] = "greybus", + }; + + return types[intf->type]; +} + +static ssize_t interface_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gb_interface *intf = to_gb_interface(dev); + + return sprintf(buf, "%s\n", gb_interface_type_string(intf)); +} +static DEVICE_ATTR_RO(interface_type); + static struct attribute *interface_attrs[] = { &dev_attr_ddbl1_manufacturer_id.attr, &dev_attr_ddbl1_product_id.attr, @@ -501,6 +522,7 @@ static struct attribute *interface_attrs[] = { &dev_attr_voltage_now.attr, &dev_attr_current_now.attr, &dev_attr_power_now.attr, + &dev_attr_interface_type.attr, NULL, }; ATTRIBUTE_GROUPS(interface); @@ -721,6 +743,8 @@ static int gb_interface_activate_operation(struct gb_interface *intf) return ret; } + intf->type = type; + switch (type) { case GB_SVC_INTF_TYPE_DUMMY: dev_info(&intf->dev, "dummy interface detected\n"); @@ -734,6 +758,7 @@ static int gb_interface_activate_operation(struct gb_interface *intf) break; default: dev_err(&intf->dev, "unknown interface type: %u\n", type); + intf->type = GB_SVC_INTF_TYPE_UNKNOWN; return -ENODEV; } |