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hidraw: document DJ report types

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This commit is contained in:
Peter Wu
2013-08-30 11:57:49 +02:00
parent 14c1aa6fbf
commit ab2cd7e619
1 changed files with 55 additions and 4 deletions
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59
hidraw.c
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@@ -24,11 +24,16 @@
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdbool.h>
typedef unsigned char u8;
#define SHORT_MSG 0x10
#define SHORT_MSG_LEN 7
#define DJ_SHORT 0x20
#define DJ_SHORT_LEN 15
#define DJ_LONG 0x21
#define DJ_LONG_LEN 32
#define LONG_MSG 0x11
#define LONG_MSG_LEN 20
@@ -50,6 +55,7 @@ struct report {
};
} __attribute__((__packed__));
/* types for HID++ report IDs 0x10 and 0x11 */
static const char * report_types[0x100] = {
[0x00] = "_HIDPP20", // fake type
// 0x00 - 0x3F HID reports
@@ -80,6 +86,28 @@ static const char * report_types[0x100] = {
[0xFF] = "_HIDPP20_ERROR_MSG",
};
/* types for DJ report IDS 0x20 and 0x21 */
static const char *dj_report_types[0x100] = {
/* 0x00 - 0x3F: RF reports */
[0x01] = "KEYBOARD",
[0x02] = "MOUSE",
[0x03] = "CONSUMER_CONTROL",
[0x04] = "SYSTEM_CONTROL",
[0x08] = "MEDIA_CENTER",
[0x0E] = "KEYBOARD_LEDS",
/* 0x40 - 0x7F: DJ notifications */
[0x40] = "NOTIF_DEVICE_UNPAIRED",
[0x41] = "NOTIF_DEVICE_PAIRED",
[0x42] = "NOTIF_CONNECTION_STATUS",
[0x7F] = "NOTIF_ERROR",
/* 0x80 - 0xFF: DJ commands */
[0x80] = "CMD_SWITCH_N_KEEPALIVE",
[0x81] = "CMD_GET_PAIRED_DEVICES"
};
static const char * error_messages[0x100] = {
// error messages for type=8F (ERROR_MSG)
[0x00] = "SUCCESS",
@@ -125,8 +153,16 @@ static const char * registers[0x100] = {
[0xf1] = "VERSION_INFO?",
};
const char * report_type_str(u8 type) {
const char * str = report_types[type];
bool report_type_is_hidpp(u8 report_id) {
return report_id == SHORT_MSG || report_id == LONG_MSG;
}
const char * report_type_str(u8 report_id, u8 type) {
const char *str;
if (report_type_is_hidpp(report_id))
str = report_types[type];
else
str = dj_report_types[type];
return str ? str : "";
}
const char * device_type_str(u8 type) {
@@ -160,6 +196,7 @@ void process_msg_payload(struct report *r, u8 data_len) {
pos = 0; // nothing has been processed
if (report_type_is_hidpp(r->report_id))
switch (r->sub_id) {
case 0x00: // assume HID++ 2.0 request/response for feature IRoot
if (data_len == 4 || data_len == 17) {
@@ -179,7 +216,7 @@ void process_msg_payload(struct report *r, u8 data_len) {
break;
case 0x8F: // error
// TODO: length check
printf("SubID=%02X %s ", bytes[0], report_type_str(bytes[0]));
printf("SubID=%02X %s ", bytes[0], report_type_str(r->report_id, bytes[0]));
printf("reg=%02X %s ", bytes[1], register_str(bytes[1]));
printf("err=%02X %s ", bytes[2], error_str(bytes[2]));
pos = 4; // everything is processed
@@ -223,6 +260,20 @@ void process_msg(struct report *report, ssize_t size) {
return;
}
break;
case DJ_SHORT:
report_type = "dj_s";
if (size != DJ_SHORT_LEN) {
fprintf(stderr, "Invalid DJ short msg len %zi\n", size);
return;
}
break;
case DJ_LONG:
report_type = "dj_l";
if (size != DJ_LONG_LEN) {
fprintf(stderr, "Invalid DJ long msg len %zi\n", size);
return;
}
break;
default:
report_type = "unkn";
//fprintf(stderr, "Unknown report ID %02x, len=%zi\n", report->report_id, size);
@@ -236,7 +287,7 @@ void process_msg(struct report *report, ssize_t size) {
printf("device=%02X %-4s ", report->device_index,
device_type_str(report->device_index));
printf("type=%02X %-23s ", report->sub_id,
report_type_str(report->sub_id));
report_type_str(report->report_id, report->sub_id));
if (size > 3) {
process_msg_payload(report, size - 3);