sdio: add basic sysfs attributes

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index c834f51..129f071 100644 (file)
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -23,6 +23,37 @@
 #define dev_to_sdio_func(d)    container_of(d, struct sdio_func, dev)
 #define to_sdio_driver(d)      container_of(d, struct sdio_driver, drv)
 
+/* show configuration fields */
+#define sdio_config_attr(field, format_string)                         \
+static ssize_t                                                         \
+field##_show(struct device *dev, struct device_attribute *attr, char *buf)                             \
+{                                                                      \
+       struct sdio_func *func;                                         \
+                                                                       \
+       func = dev_to_sdio_func (dev);                                  \
+       return sprintf (buf, format_string, func->field);               \
+}
+
+sdio_config_attr(class, "0x%02x\n");
+sdio_config_attr(vendor, "0x%04x\n");
+sdio_config_attr(device, "0x%04x\n");
+
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct sdio_func *func = dev_to_sdio_func (dev);
+
+       return sprintf(buf, "sdio:c%02Xv%04Xd%04X\n",
+                       func->class, func->vendor, func->device);
+}
+
+struct device_attribute sdio_dev_attrs[] = {
+       __ATTR_RO(class),
+       __ATTR_RO(vendor),
+       __ATTR_RO(device),
+       __ATTR_RO(modalias),
+       __ATTR_NULL,
+};
+
 static const struct sdio_device_id *sdio_match_one(struct sdio_func *func,
        const struct sdio_device_id *id)
 {
@@ -117,6 +148,7 @@ static int sdio_bus_remove(struct device *dev)
 
 static struct bus_type sdio_bus_type = {
        .name           = "sdio",
+       .dev_attrs      = sdio_dev_attrs,
        .match          = sdio_bus_match,
        .uevent         = sdio_bus_uevent,
        .probe          = sdio_bus_probe,