[PATCH 1/2] HID: N-trig Add set feature commands to driver
From: micki
Date: Mon Mar 22 2010 - 08:16:23 EST
From: micki <micki@micki-laptop.(none)>
Add set feature commands to initialize N-trig firwmare.
Add debug option to driver, Add Macro.
Update probe function, delete name allocation caused kernel panaic
Signed-off-by: Micki Balanga <micki@xxxxxxxxxx>
---
drivers/hid/hid-ntrig.c | 169 +++++++++++++++++++++++++++++++++++-----------
1 files changed, 128 insertions(+), 41 deletions(-)
diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
index edcc0c4..b4a573b 100644
--- a/drivers/hid/hid-ntrig.c
+++ b/drivers/hid/hid-ntrig.c
@@ -3,6 +3,7 @@
*
* Copyright (c) 2008 Rafi Rubin
* Copyright (c) 2009 Stephane Chatty
+ * Copyright (c) 2010 N-TRIG
*
*/
@@ -16,8 +17,77 @@
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
+#include <linux/usb.h>
#include "hid-ids.h"
+#include "usbhid/usbhid.h"
+/*
+ * Pen Event Field Declaration
+ */
+#define EVENT_PEN_TIP 0x03
+#define EVENT_PEN_RIGHT 0x05
+#define EVENT_TOUCH_PEN 0x07
+#define EVENT_PEN_IN_RANGE 0x01
+
+/*
+ * MTM 4 last bytes of report descriptor
+ */
+#define REPORT_GENERIC1 0x01
+#define REPORT_MT 0x02
+#define REPORT_PALM 0x03
+#define REPORT_GENERIC2 0x04
+
+#define NTRIG_USB_DEVICE_ID 0x0001
+
+/*
+ * MTM fields
+ */
+#define MAX_FINGERS_SUPPORT 0x06
+#define END_OF_REPORT 0x64
+
+/*
+ * Dummy Finger Declaration
+ */
+#define DUMMY_X_CORD_VAL 0x00
+#define DUMMY_Y_CORD_VAL 0x00
+#define DUMMY_DX_CORD_VAL 0xFA
+#define DUMMY_DY_CORD_VAL 0x96
+#define DUMMY_GENERIC_BYTE_VAL 0x0D
+
+/*
+ * MTM Parse Event
+ */
+#define MTM_FRAME_INDEX 0xff000001
+#define MTM_PROPROETARY 0xff000002
+
+/*
+ * MTM Set Feature Commands
+ */
+#define REPORTID_DRIVER_ALIVE 0x0A
+#define REPORTID_CALIBRATION 0x0B
+#define REPORTID_GET_VERSION 0x0C
+#define REPORTID_GET_MODE 0x0D
+#define REPORTID_SET_MODE_PEN 0x0E
+#define REPORTID_SET_MODE_TOUCH 0x0F
+#define REPORTID_SET_MODE_DUAL 0x10
+#define REPORTID_CALIBRATION_RESPOND 0x11
+#define HID_CAPACITORS_CALIB 0x12
+#define HID_GET_CAPACITORS_CALIB_DONE 0x13
+
+
+static int debug;
+
+#define MODULE_NAME "hid_ntrig"
+
+
+#define info(format, arg...) \
+ printk(KERN_INFO "%s: " format , MODULE_NAME , ## arg)
+#define ntrig_dbg(format, arg...) \
+ do { \
+ if (debug) \
+ printk(KERN_DEBUG "%s: " format, \
+ MODULE_NAME , ## arg); \
+ } while (0)
#define NTRIG_DUPLICATE_USAGES 0x001
@@ -123,8 +193,8 @@ static int ntrig_input_mapped(struct hid_device *hdev, struct hid_input *hi,
* decide whether we are in multi or single touch mode
* and call input_mt_sync after each point if necessary
*/
-static int ntrig_event (struct hid_device *hid, struct hid_field *field,
- struct hid_usage *usage, __s32 value)
+static int ntrig_event(struct hid_device *hid, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
{
struct input_dev *input = field->hidinput->input;
struct ntrig_data *nd = hid_get_drvdata(hid);
@@ -133,7 +203,7 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field,
if (field->application == HID_DG_PEN)
return 0;
- if (hid->claimed & HID_CLAIMED_INPUT) {
+ if (hid->claimed & HID_CLAIMED_INPUT) {
switch (usage->hid) {
case 0xff000001:
/* Tag indicating the start of a multitouch group */
@@ -279,12 +349,58 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field,
return 1;
}
+/*
+ * This function used to configure N-trig firmware
+ * The first command we need to send to firmware is change
+ * to Multi-touch Mode we don't receive a reply
+ */
+static int ntrig_send_report(struct hid_device *hid)
+{
+ struct hid_report *report;
+ struct list_head *report_list =
+ &hid->report_enum[HID_FEATURE_REPORT].report_list;
+
+ if (list_empty(report_list)) {
+ ntrig_dbg("no feature reports found\n");
+ return -ENODEV;
+ }
+ report = list_first_entry(report_list, struct hid_report, list);
+ if (report->maxfield < 1)
+ return -ENODEV;
+
+ list_for_each_entry(report,
+ report_list, list) {
+ if (report->maxfield < 1) {
+ ntrig_dbg("no fields in the report\n");
+ continue;
+ }
+ ntrig_dbg("report id %x\n", report->id);
+ switch (report->id) {
+ case REPORTID_DRIVER_ALIVE:
+ usbhid_submit_report(hid, report, USB_DIR_OUT);
+ break;
+ /*
+ * These command will implement later accroding to demand
+ */
+ case REPORTID_GET_VERSION: /* FALLTHRU */
+ case REPORTID_SET_MODE_DUAL: /* FALLTHRU */
+ case REPORTID_CALIBRATION: /* FALLTHRU */
+ case REPORTID_GET_MODE: /* FALLTHRU */
+ case REPORTID_SET_MODE_PEN: /* FALLTHRU */
+ case REPORTID_SET_MODE_TOUCH: /* FALLTHRU */
+ case REPORTID_CALIBRATION_RESPOND:/* FALLTHRU */
+ case HID_CAPACITORS_CALIB: /* FALLTHRU */
+ case HID_GET_CAPACITORS_CALIB_DONE:
+ break;
+ }
+ }
+ return 0;
+}
+
static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
struct ntrig_data *nd;
- struct hid_input *hidinput;
- struct input_dev *input;
if (id->driver_data)
hdev->quirks |= HID_QUIRK_MULTI_INPUT;
@@ -310,42 +426,10 @@ static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id)
goto err_free;
}
-
- list_for_each_entry(hidinput, &hdev->inputs, list) {
- if (hidinput->report->maxfield < 1)
- continue;
-
- input = hidinput->input;
- switch (hidinput->report->field[0]->application) {
- case HID_DG_PEN:
- input->name = "N-Trig Pen";
- break;
- case HID_DG_TOUCHSCREEN:
- /* These keys are redundant for fingers, clear them
- * to prevent incorrect identification */
- __clear_bit(BTN_TOOL_PEN, input->keybit);
- __clear_bit(BTN_TOOL_FINGER, input->keybit);
- __clear_bit(BTN_0, input->keybit);
- /*
- * A little something special to enable
- * two and three finger taps.
- */
- __set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
- __set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
- __set_bit(BTN_TOOL_QUADTAP, input->keybit);
- /*
- * The physical touchscreen (single touch)
- * input has a value for physical, whereas
- * the multitouch only has logical input
- * fields.
- */
- input->name =
- (hidinput->report->field[0]
- ->physical) ?
- "N-Trig Touchscreen" :
- "N-Trig MultiTouch";
- break;
- }
+ ret = ntrig_send_report(hdev);
+ if (ret) {
+ dev_err(&hdev->dev, "send set feature failed\n");
+ goto err_free;
}
return 0;
@@ -395,4 +479,7 @@ static void __exit ntrig_exit(void)
module_init(ntrig_init);
module_exit(ntrig_exit);
+
+MODULE_PARM_DESC(debug, "Debug mode enable disable");
+module_param(debug, bool, 0644);
MODULE_LICENSE("GPL");
--
1.6.3.3
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