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    Subject[PATCH 16/16] Staging: ipack: Provide ID Prom through sysfs.
    Date
    From: Jens Taprogge <jens.taprogge@taprogge.org>

    Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
    Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
    ---
    drivers/staging/ipack/ipack.c | 31 +++++++++++++++++++++++++++++++
    1 file changed, 31 insertions(+)

    diff --git a/drivers/staging/ipack/ipack.c b/drivers/staging/ipack/ipack.c
    index a5ef28f..ff907fa 100644
    --- a/drivers/staging/ipack/ipack.c
    +++ b/drivers/staging/ipack/ipack.c
    @@ -120,6 +120,36 @@ field##_show(struct device *dev, struct device_attribute *attr, \
    return sprintf(buf, format_string, idev->field); \
    }

    +static ssize_t id_show(struct device *dev,
    + struct device_attribute *attr, char *buf)
    +{
    + unsigned int i, c, l, s;
    + struct ipack_device *idev = to_ipack_dev(dev);
    +
    +
    + switch (idev->id_format) {
    + case IPACK_ID_VERSION_1:
    + l = 0x7; s = 1; break;
    + case IPACK_ID_VERSION_2:
    + l = 0xf; s = 2; break;
    + default:
    + return -EIO;
    + }
    + c = 0;
    + for (i = 0; i < idev->id_avail; i++) {
    + if (i > 0) {
    + if ((i & l) == 0)
    + buf[c++] = '\n';
    + else if ((i & s) == 0)
    + buf[c++] = ' ';
    + }
    + sprintf(&buf[c], "%02x", idev->id[i]);
    + c += 2;
    + }
    + buf[c++] = '\n';
    + return c;
    +}
    +
    static ssize_t
    id_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
    {
    @@ -160,6 +190,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
    ipack_device_attr(id_format, "0x%hhu\n");

    static struct device_attribute ipack_dev_attrs[] = {
    + __ATTR_RO(id),
    __ATTR_RO(id_device),
    __ATTR_RO(id_format),
    __ATTR_RO(id_vendor),
    --
    1.7.10.4
    --
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