>From 15fd982367e4e8f5ceeec3b8f802fb0f43da4ef9 Mon Sep 17 00:00:00 2001 From: Bastien Nocera Date: Mon, 18 Jan 2010 16:13:41 +0000 Subject: [PATCH] [hid] Implement Wacom quirk in the kernel 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 --- drivers/hid/hid-wacom.c | 33 +++++++++++++++++++++++++++++++++ 1 files changed, 33 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c index 7475421..ad71a85 100644 --- a/drivers/hid/hid-wacom.c +++ b/drivers/hid/hid-wacom.c @@ -155,7 +155,9 @@ static int wacom_probe(struct hid_device *hdev, struct hid_input *hidinput; struct input_dev *input; struct wacom_data *wdata; + char rep_data[3]; int ret; + int limit; wdata = kzalloc(sizeof(*wdata), GFP_KERNEL); if (wdata == NULL) { @@ -165,6 +167,7 @@ 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"); @@ -177,6 +180,36 @@ static int wacom_probe(struct hid_device *hdev, goto err_free; } + /* Set Wacom mode2 */ + rep_data[0] = 0x53; /* HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE */ + rep_data[1] = 0x03; rep_data[2] = 0x00; + limit =3; + do { + ret = hdev->hid_output_raw_report(hdev, rep_data, 3); + } while (ret < 0 && limit-- > 0); + if (ret < 0) { + dev_err(&hdev->dev, "failed to poke device #1, %d\n", ret); + goto err_free; + } + + rep_data[0] = 0x71; /* HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE */ + /* 0x06 - high reporting speed, 0x05 - low speed */ + rep_data[1] = 0x06; rep_data[2] = 0x00; + limit = 3; + do { + ret = hdev->hid_output_raw_report(hdev, rep_data, 3); + } while (ret < 0 && limit-- > 0); + if (ret < 0) { + dev_err(&hdev->dev, "failed to poke device #2, %d\n", ret); + goto err_free; + } + + ret = hid_parse(hdev); + if (ret) { + dev_err(&hdev->dev, "parse failed\n"); + goto err_free; + } + hidinput = list_entry(hdev->inputs.next, struct hid_input, list); input = hidinput->input; -- 1.6.5.2