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author | Johannes Thumshirn <jthumshirn@suse.de> | 2016-05-03 09:46:23 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-03 15:07:35 -0700 |
commit | 803f1ca60d5c0107adfbce4e2d70488598b03a80 (patch) | |
tree | 763936d780406f59bef75b19d91f674a855345ba /drivers/mcb/mcb-core.c | |
parent | 18d28819809909c3f24bb72183a901c5e332a63d (diff) | |
download | linux-stable-803f1ca60d5c0107adfbce4e2d70488598b03a80.tar.gz linux-stable-803f1ca60d5c0107adfbce4e2d70488598b03a80.tar.bz2 linux-stable-803f1ca60d5c0107adfbce4e2d70488598b03a80.zip |
mcb: export bus information via sysfs
Export information about the bus stored in the FPGA's header to userspace via
sysfs, instead of hiding it in pr_debug()s from everyone.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Andreas Werner <andreas.werner@men.de>
Tested-by: Andreas Werner <andreas.werner@men.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mcb/mcb-core.c')
-rw-r--r-- | drivers/mcb/mcb-core.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index 1e336cc56751..9ae4d15fc229 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -90,6 +90,60 @@ static void mcb_shutdown(struct device *dev) mdrv->shutdown(mdev); } +static ssize_t revision_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mcb_bus *bus = to_mcb_bus(dev); + + return scnprintf(buf, PAGE_SIZE, "%d\n", bus->revision); +} +static DEVICE_ATTR_RO(revision); + +static ssize_t model_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mcb_bus *bus = to_mcb_bus(dev); + + return scnprintf(buf, PAGE_SIZE, "%c\n", bus->model); +} +static DEVICE_ATTR_RO(model); + +static ssize_t minor_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mcb_bus *bus = to_mcb_bus(dev); + + return scnprintf(buf, PAGE_SIZE, "%d\n", bus->minor); +} +static DEVICE_ATTR_RO(minor); + +static ssize_t name_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mcb_bus *bus = to_mcb_bus(dev); + + return scnprintf(buf, PAGE_SIZE, "%s\n", bus->name); +} +static DEVICE_ATTR_RO(name); + +static struct attribute *mcb_bus_attrs[] = { + &dev_attr_revision.attr, + &dev_attr_model.attr, + &dev_attr_minor.attr, + &dev_attr_name.attr, + NULL, +}; + +static const struct attribute_group mcb_carrier_group = { + .attrs = mcb_bus_attrs, +}; + +static const struct attribute_group *mcb_carrier_groups[] = { + &mcb_carrier_group, + NULL, +}; + + static struct bus_type mcb_bus_type = { .name = "mcb", .match = mcb_match, @@ -99,6 +153,11 @@ static struct bus_type mcb_bus_type = { .shutdown = mcb_shutdown, }; +static struct device_type mcb_carrier_device_type = { + .name = "mcb-carrier", + .groups = mcb_carrier_groups, +}; + /** * __mcb_register_driver() - Register a @mcb_driver at the system * @drv: The @mcb_driver @@ -205,6 +264,7 @@ struct mcb_bus *mcb_alloc_bus(struct device *carrier) device_initialize(&bus->dev); bus->dev.parent = carrier; bus->dev.bus = &mcb_bus_type; + bus->dev.type = &mcb_carrier_device_type; dev_set_name(&bus->dev, "mcb:%d", bus_nr); rc = device_add(&bus->dev); |