From 15fd982367e4e8f5ceeec3b8f802fb0f43da4ef9 Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
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 <hadess@hadess.net>
---
drivers/hid/hid-wacom.c | 33 +++++++++++++++++++++++++++++++++
1 files changed, 33 insertions(+), 0 deletions(-)
@@ -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