Add two attributes, ver and cmd, to provide more convenient way to integrate with shell scripts.
Signed-off-by: John Sung <[email protected]> --- drivers/hid/hid-penmount.c | 87 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/drivers/hid/hid-penmount.c b/drivers/hid/hid-penmount.c index 4fd14c8..a59c0e0 100644 --- a/drivers/hid/hid-penmount.c +++ b/drivers/hid/hid-penmount.c @@ -79,6 +79,88 @@ static int penmount_hid_getreport(struct penmount *pm, unsigned char *ack) return ret; } +static ssize_t penmount_cmd_store(struct device *dev, + struct device_attribute *attr, const char *buffer, size_t count) +{ + struct penmount *pm = NULL; + struct hid_device *hdev = NULL; + unsigned char cmd[PM_HID_REPORT_SIZE] = { 0, 0, 0, 0, 0 }; + + hdev = dev_get_drvdata(dev); + if (hdev == NULL) + return -EINVAL; + + pm = hid_get_drvdata(hdev); + if ((pm == NULL) || (buffer == NULL)) + return -EINVAL; + + count = sscanf(buffer, "%hhX %hhX %hhX %hhX %hhX", &cmd[0], &cmd[1], + &cmd[2], &cmd[3], &cmd[4]); + + if (penmount_hid_setreport(pm, cmd) < 0) + return 0; + + return count; +} + +static ssize_t penmount_cmd_show(struct device *dev, + struct device_attribute *attr, char *buffer) +{ + struct penmount *pm = NULL; + struct hid_device *hdev = NULL; + size_t count = 0; + unsigned char ack[PM_HID_REPORT_SIZE] = { 0, 0, 0, 0, 0 }; + + hdev = dev_get_drvdata(dev); + if (hdev == NULL) + return -EINVAL; + + pm = hid_get_drvdata(hdev); + if ((pm == NULL) || (buffer == NULL)) + return -EINVAL; + + if (penmount_hid_getreport(pm, ack) < 0) + return 0; + + count = sprintf(buffer, "0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n", ack[0], + ack[1], ack[2], ack[3], ack[4]); + + return count; +} + +static ssize_t penmount_ver_show(struct device *dev, + struct device_attribute *attr, char *buffer) +{ + struct penmount *pm = NULL; + struct hid_device *hdev = NULL; + size_t count = 0; + + hdev = dev_get_drvdata(dev); + if (hdev == NULL) + return -EINVAL; + + pm = hid_get_drvdata(hdev); + if ((pm == NULL) || (buffer == NULL)) + return -EINVAL; + + count = sprintf(buffer, "%s\n", pm->version); + + return count; +} + +static DEVICE_ATTR(ver, 0444, penmount_ver_show, NULL); +static DEVICE_ATTR(cmd, 0644, penmount_cmd_show, penmount_cmd_store); + +static struct attribute *penmount_attrs[] = { + &dev_attr_cmd.attr, + &dev_attr_ver.attr, + NULL +}; + +static const struct attribute_group penmount_attr_group = { + .attrs = penmount_attrs, +}; + static int penmount_get_version(struct penmount *pm) { int ret = 0; @@ -354,6 +436,10 @@ static int penmount_probe(struct hid_device *hdev, if (hidinput != NULL) { pm->input = hidinput->input; set_bit(INPUT_PROP_DIRECT, hidinput->input->propbit); + if (sysfs_create_group(&hidinput->input->dev.kobj, + &penmount_attr_group)) { + hid_warn(hdev, "Failed to create attr group !\n"); + } } penmount_get_version(pm); @@ -368,6 +454,7 @@ static void penmount_remove(struct hid_device *hdev) pm = hid_get_drvdata(hdev); if (pm != NULL) { + sysfs_remove_group(&pm->input->dev.kobj, &penmount_attr_group); kfree(pm); hid_set_drvdata(hdev, NULL); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
