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path: root/drivers/hid/hid-wacom.c
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Diffstat (limited to 'drivers/hid/hid-wacom.c')
-rw-r--r--drivers/hid/hid-wacom.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index 12dcda529201..8d3b46f5d149 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,
156 struct hid_input *hidinput; 156 struct hid_input *hidinput;
157 struct input_dev *input; 157 struct input_dev *input;
158 struct wacom_data *wdata; 158 struct wacom_data *wdata;
159 char rep_data[2];
159 int ret; 160 int ret;
161 int limit;
160 162
161 wdata = kzalloc(sizeof(*wdata), GFP_KERNEL); 163 wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
162 if (wdata == NULL) { 164 if (wdata == NULL) {
@@ -166,6 +168,7 @@ static int wacom_probe(struct hid_device *hdev,
166 168
167 hid_set_drvdata(hdev, wdata); 169 hid_set_drvdata(hdev, wdata);
168 170
171 /* Parse the HID report now */
169 ret = hid_parse(hdev); 172 ret = hid_parse(hdev);
170 if (ret) { 173 if (ret) {
171 dev_err(&hdev->dev, "parse failed\n"); 174 dev_err(&hdev->dev, "parse failed\n");
@@ -178,6 +181,31 @@ static int wacom_probe(struct hid_device *hdev,
178 goto err_free; 181 goto err_free;
179 } 182 }
180 183
184 /*
185 * Note that if the raw queries fail, it's not a hard failure and it
186 * is safe to continue
187 */
188
189 /* Set Wacom mode2 */
190 rep_data[0] = 0x03; rep_data[1] = 0x00;
191 limit = 3;
192 do {
193 ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
194 HID_FEATURE_REPORT);
195 } while (ret < 0 && limit-- > 0);
196 if (ret < 0)
197 dev_warn(&hdev->dev, "failed to poke device #1, %d\n", ret);
198
199 /* 0x06 - high reporting speed, 0x05 - low speed */
200 rep_data[0] = 0x06; rep_data[1] = 0x00;
201 limit = 3;
202 do {
203 ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
204 HID_FEATURE_REPORT);
205 } while (ret < 0 && limit-- > 0);
206 if (ret < 0)
207 dev_warn(&hdev->dev, "failed to poke device #2, %d\n", ret);
208
181 hidinput = list_entry(hdev->inputs.next, struct hid_input, list); 209 hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
182 input = hidinput->input; 210 input = hidinput->input;
183 211