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    Subject[PATCH 2/3] HID: Implement Wacom quirk in the kernel
    From: Bastien Nocera <hadess@hadess.net>

    The hid-wacom driver required user-space to poke at the tablet
    to make it send data about the cursor location.

    This patch makes it do the same thing but in the kernel.

    Signed-off-by: Bastien Nocera <hadess@hadess.net>
    Signed-off-by: Jiri Kosina <jkosina@suse.cz>
    ---
    drivers/hid/hid-wacom.c | 27 +++++++++++++++++++++++++++
    1 files changed, 27 insertions(+), 0 deletions(-)

    diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
    index 12dcda5..d7897b5 100644
    --- a/drivers/hid/hid-wacom.c
    +++ b/drivers/hid/hid-wacom.c
    @@ -156,7 +156,9 @@ static int wacom_probe(struct hid_device *hdev,
    struct hid_input *hidinput;
    struct input_dev *input;
    struct wacom_data *wdata;
    + char rep_data[2];
    int ret;
    + int limit;

    wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
    if (wdata == NULL) {
    @@ -166,6 +168,7 @@ static int wacom_probe(struct hid_device *hdev,

    hid_set_drvdata(hdev, wdata);

    + /* Parse the HID report now */
    ret = hid_parse(hdev);
    if (ret) {
    dev_err(&hdev->dev, "parse failed\n");
    @@ -178,6 +181,30 @@ static int wacom_probe(struct hid_device *hdev,
    goto err_free;
    }

    + /* Set Wacom mode2 */
    + rep_data[0] = 0x03; rep_data[1] = 0x00;
    + limit =3;
    + do {
    + ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
    + HID_FEATURE_REPORT);
    + } while (ret < 0 && limit-- > 0);
    + if (ret < 0) {
    + dev_err(&hdev->dev, "failed to poke device #1, %d\n", ret);
    + goto err_free;
    + }
    +
    + /* 0x06 - high reporting speed, 0x05 - low speed */
    + rep_data[0] = 0x06; rep_data[1] = 0x00;
    + limit = 3;
    + do {
    + ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
    + HID_FEATURE_REPORT);
    + } while (ret < 0 && limit-- > 0);
    + if (ret < 0) {
    + dev_err(&hdev->dev, "failed to poke device #2, %d\n", ret);
    + goto err_free;
    + }
    +
    hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
    input = hidinput->input;

    --
    1.6.4.2


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