Hi,
Two patches to allow switching of reporting speed of wacom bluetooth
tablet from userspace through sysfs.
kind reagrds,
Przemo
>From ac9a87b92cf2f8cc27a1d29123c5fa1a8bebd71a Mon Sep 17 00:00:00 2001
From: Przemo Firszt <przemo@xxxxxxxxx>
Date: Thu, 18 Mar 2010 11:58:22 +0000
Subject: [PATCH 1/2] Add separate mode switching function wacom bluetooth pen tablet.
wacom_poke function allows to switch tablet reporting speed. The patch
dosen't add any new functionality, but it's preparation for user-space
speed switching through sysfs.
Signed-off-by: Przemo Firszt <przemo@xxxxxxxxx>
---
drivers/hid/hid-wacom.c | 66 ++++++++++++++++++++++++++++------------------
1 files changed, 40 insertions(+), 26 deletions(-)
diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index 4d2d2a2..f9d4939 100644
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -103,6 +103,44 @@ static int wacom_ac_get_property(struct power_supply *psy,
}
#endif
+static void wacom_poke(struct hid_device *hdev, u8 speed)
+{
+ int limit, ret;
+ char rep_data[2];
+
+ 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) {
+ if (speed == 0)
+ rep_data[0] = 0x05;
+ else
+ 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)
+ return;
+ }
+
+ /*
+ * Note that if the raw queries fail, it's not a hard failure and it
+ * is safe to continue
+ */
+ dev_warn(&hdev->dev, "failed to poke device, command %d, err %d\n",
+ rep_data[0], ret);
+ return;
+}
+
static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *raw_data, int size)
{
@@ -236,9 +274,7 @@ 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) {
@@ -261,30 +297,8 @@ static int wacom_probe(struct hid_device *hdev,
goto err_free;
}
- /*
- * Note that if the raw queries fail, it's not a hard failure and it
- * is safe to continue
- */
-
- /* 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_warn(&hdev->dev, "failed to poke device #1, %d\n", ret);
-
- /* 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_warn(&hdev->dev, "failed to poke device #2, %d\n", ret);
+ /* Set Wacom mode 2 with high reporting speed */
+ wacom_poke(hdev, 1);
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
wdata->battery.properties = wacom_battery_props;
--
1.7.0.1
