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path: root/drivers/hid/hid-ntrig.c
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Diffstat (limited to 'drivers/hid/hid-ntrig.c')
-rw-r--r--drivers/hid/hid-ntrig.c69
1 files changed, 60 insertions, 9 deletions
diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
index fb69b8c4953f..69169efa1e16 100644
--- a/drivers/hid/hid-ntrig.c
+++ b/drivers/hid/hid-ntrig.c
@@ -90,6 +90,55 @@ struct ntrig_data {
};
+/*
+ * This function converts the 4 byte raw firmware code into
+ * a string containing 5 comma separated numbers.
+ */
+static int ntrig_version_string(unsigned char *raw, char *buf)
+{
+ __u8 a = (raw[1] & 0x0e) >> 1;
+ __u8 b = (raw[0] & 0x3c) >> 2;
+ __u8 c = ((raw[0] & 0x03) << 3) | ((raw[3] & 0xe0) >> 5);
+ __u8 d = ((raw[3] & 0x07) << 3) | ((raw[2] & 0xe0) >> 5);
+ __u8 e = raw[2] & 0x07;
+
+ /*
+ * As yet unmapped bits:
+ * 0b11000000 0b11110001 0b00011000 0b00011000
+ */
+
+ return sprintf(buf, "%u.%u.%u.%u.%u", a, b, c, d, e);
+}
+
+static void ntrig_report_version(struct hid_device *hdev)
+{
+ int ret;
+ char buf[20];
+ struct usb_device *usb_dev = hid_to_usb_dev(hdev);
+ unsigned char *data = kmalloc(8, GFP_KERNEL);
+
+ if (!data)
+ goto err_free;
+
+ ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
+ USB_REQ_CLEAR_FEATURE,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE |
+ USB_DIR_IN,
+ 0x30c, 1, data, 8,
+ USB_CTRL_SET_TIMEOUT);
+
+ if (ret == 8) {
+ ret = ntrig_version_string(&data[2], buf);
+
+ dev_info(&hdev->dev,
+ "Firmware version: %s (%02x%02x %02x%02x)\n",
+ buf, data[2], data[3], data[4], data[5]);
+ }
+
+err_free:
+ kfree(data);
+}
+
static ssize_t show_phys_width(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -377,8 +426,8 @@ static struct attribute_group ntrig_attribute_group = {
*/
static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
{
struct ntrig_data *nd = hid_get_drvdata(hdev);
@@ -448,13 +497,13 @@ static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi,
/* width/height mapped on TouchMajor/TouchMinor/Orientation */
case HID_DG_WIDTH:
hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_TOUCH_MAJOR);
+ EV_ABS, ABS_MT_TOUCH_MAJOR);
return 1;
case HID_DG_HEIGHT:
hid_map_usage(hi, usage, bit, max,
- EV_ABS, ABS_MT_TOUCH_MINOR);
+ EV_ABS, ABS_MT_TOUCH_MINOR);
input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
- 0, 1, 0, 0);
+ 0, 1, 0, 0);
return 1;
}
return 0;
@@ -468,8 +517,8 @@ static int ntrig_input_mapping(struct hid_device *hdev, struct hid_input *hi,
}
static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
{
/* No special mappings needed for the pen and single touch */
if (field->physical)
@@ -489,7 +538,7 @@ static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi,
* and call input_mt_sync after each point if necessary
*/
static int ntrig_event (struct hid_device *hid, struct hid_field *field,
- struct hid_usage *usage, __s32 value)
+ struct hid_usage *usage, __s32 value)
{
struct input_dev *input = field->hidinput->input;
struct ntrig_data *nd = hid_get_drvdata(hid);
@@ -848,6 +897,8 @@ static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (report)
usbhid_submit_report(hdev, report, USB_DIR_OUT);
+ ntrig_report_version(hdev);
+
ret = sysfs_create_group(&hdev->dev.kobj,
&ntrig_attribute_group);
@@ -860,7 +911,7 @@ err_free:
static void ntrig_remove(struct hid_device *hdev)
{
sysfs_remove_group(&hdev->dev.kobj,
- &ntrig_attribute_group);
+ &ntrig_attribute_group);
hid_hw_stop(hdev);
kfree(hid_get_drvdata(hdev));
}