From 2d7b220409f395cc3a82efb7eb4abca21dbf69a2 Mon Sep 17 00:00:00 2001
From: Andi Shyti <andi.shyti@samsung.com>
Date: Thu, 15 Dec 2016 15:10:06 +0900
Subject: stmfts.c: added file

Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
---
 stmfts.c | 180 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 180 insertions(+)
 create mode 100644 stmfts.c

diff --git a/stmfts.c b/stmfts.c
new file mode 100644
index 0000000..0e8e908
--- /dev/null
+++ b/stmfts.c
@@ -0,0 +1,180 @@
+#include <dirent.h>
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <linux/input.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define STMFTS_INPUT_PATH	"/dev/input/"
+#define STMFTS_INPUT_NAME_SIZE	256
+
+struct stmfts_event {
+	struct input_event ev;
+
+	int id;
+	int x;
+	int y;
+	int orientation;
+	int major;
+	int minor;
+	int area;
+};
+
+static int stmfts_select(const struct dirent *ep)
+{
+	if(ep->d_type != DT_CHR)
+		return 0;
+
+	if(!strstr(ep->d_name, "event"))
+		return 0;
+
+	return 1;
+}
+
+int stmfts_read_event(fd)
+{
+	int ret;
+	struct stmfts_event sev;
+	int slot;
+
+	memset(&sev, 0, sizeof(sev));
+
+	while(1) {
+		ret = read(fd, &sev.ev, sizeof(sev.ev));
+
+		if (ret < 0)
+			perror("unable to read from device");
+		if (ret != sizeof(sev.ev))
+			error(0, EIO, "unable to read properly");
+
+		switch(sev.ev.type) {
+		case EV_SYN:
+			printf("touch event: [%d] id = %d, x = %d, y = %d, "
+				"major = %d, minor = %d, orientation = %d, "
+				"area = %d\n", slot, sev.id, sev.x, sev.y,
+				sev.major, sev.minor, sev.orientation, sev.area);
+			memset(&sev, 0, sizeof(sev));
+			break;
+		case EV_ABS:
+			switch(sev.ev.code) {
+			case ABS_MT_POSITION_X:
+				sev.x = sev.ev.value;
+				break;
+			case ABS_MT_POSITION_Y:
+				sev.y = sev.ev.value;
+				break;
+			case ABS_MT_TOUCH_MAJOR:
+				sev.major = sev.ev.value;
+				break;
+			case ABS_MT_TOUCH_MINOR:
+				sev.minor = sev.ev.value;
+				break;
+			case ABS_MT_ORIENTATION:
+				sev.orientation = sev.ev.value;
+				break;
+			case ABS_MT_PRESSURE:
+				sev.area = sev.ev.value;
+				break;
+			/* case ABS_MT_TRACKING_ID:
+				sev.id = sev.ev.value;
+				break; */
+			case ABS_MT_SLOT:
+				slot = sev.ev.value;
+				break;
+			default:
+				fprintf(stderr, "*** unhandled event code"
+					"(type = %x, code = %x, value = %d)\n",
+					sev.ev.type, sev.ev.code, sev.ev.value);
+			}
+			break;
+		default:
+			fprintf(stderr, "*** unhandled event type"
+				"(type = %x, code = %x, value = %d)\n",
+				sev.ev.type, sev.ev.code, sev.ev.value);
+		}
+	}
+
+	return -1;
+}
+
+int stmfts_open_event(char *fname)
+{
+	struct dirent **eps;
+	int i;
+	int n;
+	int ret = 0;
+
+	n = scandir(STMFTS_INPUT_PATH, &eps, stmfts_select, alphasort);
+	if (!n) {
+		perror ("couldn't open the directory");
+		return -1;
+	}
+
+	for (i = 0; i < n; i++) {
+		char path[64];
+		int fd;
+		char dev_name[STMFTS_INPUT_NAME_SIZE];
+
+		sprintf(path, STMFTS_INPUT_PATH "%s", eps[i]->d_name);
+
+		fd = open(path, O_RDONLY);
+		if (fd < 0) {
+			perror("cannot open file");
+			return -1;
+		}
+
+		ret = ioctl(fd, EVIOCGNAME(STMFTS_INPUT_NAME_SIZE), dev_name);
+		if (ret < 0) {
+			perror("unable to get the name");
+			close(fd);
+			continue;
+		}
+
+		ret = strncmp(fname, dev_name, STMFTS_INPUT_NAME_SIZE);
+		if (ret)
+			continue;
+
+		return fd;
+
+		close(fd);
+	}
+
+	error(0, ENODEV, "input device not found");
+	return -1;
+}
+
+int stmfts_close_event(int fd)
+{
+	return close(fd);
+}
+
+void stmfts_print_usage(char *argv)
+{
+	printf("usage: %s <input dev name>\n", argv);
+	printf("\n");
+	printf("\'input dev name\' is the name given by the device driver "
+		"to the /dev/inputX interface\n");
+}
+
+int main(int argc, char *argv[])
+{
+	int fd;
+
+	if (argc != 2) {
+		error(0, EPERM, "missing event name");
+		stmfts_print_usage(argv[0]);
+		return -1;
+	}
+
+	fd = stmfts_open_event(argv[1]);
+	if (fd < 0)
+		error(0, ENODEV, "input event not found");
+
+	fd = stmfts_read_event(fd);
+	if (fd)
+		fprintf(stderr, "something went wrong\n");
+
+	return 0;
+}
-- 
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