From: KwangCheol Lee <kclee@dignsys.com>
Date: Wed, 13 Sep 2017 10:53:04 +0000 (+0900)
Subject: touchscreen: control interface change to sysfs
X-Git-Tag: submit/tizen/20210604.091051~27
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2d6c367dfb31e3a1c16436b3acd6bdc0d4cd9d35;p=platform%2Fhal%2Fbackend%2Frpi%2Fdevice-rpi.git

touchscreen: control interface change to sysfs

The control interface of touchscreen is changed from
the kernel module loading/unloading to sysfs enable interface.

Version changed to 0.0.2

Change-Id: Ifab000c27b17638ba1cf69583ab2fe79f49a1f4e
Signed-off-by: KwangCheol Lee <kclee@dignsys.com>
(cherry picked from commit 8d690c714b2544c11410ab7b41c10fe150a28821)
---

diff --git a/hw/touchscreen/touchscreen.c b/hw/touchscreen/touchscreen.c
old mode 100644
new mode 100755
index 3f25986..8cae686
--- a/hw/touchscreen/touchscreen.c
+++ b/hw/touchscreen/touchscreen.c
@@ -23,145 +23,39 @@
 #include <errno.h>
 #include <linux/limits.h>
 #include <dirent.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <sys/utsname.h>
 
 #include <hw/touchscreen.h>
 #include "../shared.h"
 
+#define TOUCHSCREEN_CON_FILE	"/sys/devices/platform/rpi_ft5406/enable"
+
 #define TURNON_TOUCHSCREEN     1
 #define TURNOFF_TOUCHSCREEN    0
 
-#define MODULES_FILE_NAME	"/proc/modules"
-#define MODULE_KO_NAME		"rpi-ft5406.ko"
-#define MODULE_NAME			"rpi_ft5406"
-
-#define init_module(mod, len, opts) syscall(__NR_init_module, mod, len, opts)
-#define delete_module(name, flags) syscall(__NR_delete_module, name, flags)
-
-static int find_module(char *name)
-{
-	FILE *fp = fopen(MODULES_FILE_NAME, "rt");
-	if (fp == NULL) {
-		_E("Can not open file(%s).\n", MODULES_FILE_NAME);
-		return -ENOENT;
-	}
-
-	int found = 0;
-	char mod_str[256];
-	char mod_name[256];
-	for (; fgets(mod_str, sizeof(mod_str), fp); ) {
-		sscanf(mod_str, "%s ", mod_name);
-		if (strcmp(mod_name, name) == 0) {
-			_E("[%s]\t%s", mod_name, mod_str);
-			found = 1;
-			break;
-		}
-	}
-
-	fclose(fp);
-
-	return found;
-}
-
-static int get_module_path(char *name, char *path)
-{
-	struct utsname utsn;
-
-	int ret = uname(&utsn);
-	if (ret != 0)
-		return ret;
-
-	sprintf(path, "/lib/modules/%s/%s", utsn.release, name);
-
-	return 0;
-}
-
-static int ins_module(char *name)
-{
-	char path[512];
-
-	if (get_module_path(name, path) != 0)
-		return -EEXIST;
-
-	int fd = open(path, O_RDONLY);
-	if (fd < 0) {
-		_E("Can not open module(%s).\n", path);
-		return -EEXIST;
-	}
-
-	struct stat st;
-	int ret = fstat(fd, &st);
-	if (ret < 0) {
-		_E("Module fstat error(%s).\n", path);
-		close(fd);
-		return -EIO;
-	}
-
-	size_t image_size = st.st_size;
-	void *image = malloc(image_size);
-	if (image == NULL) {
-		_E("Memory allocation errorr.\n");
-		close(fd);
-		return -ENOMEM;
-	}
-
-	ssize_t size = read(fd, image, image_size);
-	if (size != image_size) {
-		_E("Module file read error(%d).\n", size);
-		free(image);
-		close(fd);
-		return -EIO;
-	}
-	close(fd);
-
-	ret = init_module(image, image_size, "");
-	if (ret < 0) {
-		_E("init_module error(%d).\n", ret);
-		free(image);
-		return -EIO;
-	}
-	free(image);
-
-	return 0;
-}
-
-static int rm_module(char *name)
-{
-	int ret = delete_module(name, O_NONBLOCK);
-	if (ret != 0) {
-		_E("delete_module error(%d).\n", ret);
-		return -EIO;
-	}
-
-	return 0;
-}
-
-
 static int touchscreen_get_state(enum touchscreen_state *state)
 {
 	int ret;
+	int val;
 
 	if (!state)
 		return -EINVAL;
 
-	ret = find_module(MODULE_NAME);
+	ret = sys_get_int(TOUCHSCREEN_CON_FILE, &val);
 	if (ret < 0) {
 		_E("Failed to get touchscreen state (%d)", ret);
 		return ret;
 	}
 
-	switch (ret) {
-		case TURNOFF_TOUCHSCREEN:
-			*state = TOUCHSCREEN_OFF;
-			break;
-		case TURNON_TOUCHSCREEN:
-			*state = TOUCHSCREEN_ON;
-			break;
+	switch (val) {
+	case TURNOFF_TOUCHSCREEN:
+		*state = TOUCHSCREEN_OFF;
+		break;
+	case TURNON_TOUCHSCREEN:
+		*state = TOUCHSCREEN_ON;
+		break;
+	default:
+		_E("Failed to get touchscreen state (%d)", val);
+		return -EINVAL;
 	}
 
 	return 0;
@@ -169,20 +63,25 @@ static int touchscreen_get_state(enum touchscreen_state *state)
 
 static int touchscreen_set_state(enum touchscreen_state state)
 {
-	int ret = 0;
+	int ret;
+	int val;
 
 	switch (state) {
-		case TOUCHSCREEN_OFF:
-			ret = rm_module(MODULE_NAME);
-			break;
-		case TOUCHSCREEN_ON:
-			ret = ins_module(MODULE_KO_NAME);
-			break;
-		default:
-			_E("Invalid input (%d)", state);
-			return -EINVAL;
+	case TOUCHSCREEN_OFF:
+		val = TURNOFF_TOUCHSCREEN;
+		break;
+	case TOUCHSCREEN_ON:
+		val = TURNON_TOUCHSCREEN;
+		break;
+	default:
+		_E("Invalid input (%d)", state);
+		return -EINVAL;
 	}
 
+	ret = sys_set_int(TOUCHSCREEN_CON_FILE, val);
+	if (ret < 0)
+		_E("Failed to change touchscreen state (%d)", ret);
+
 	return ret;
 }
 
diff --git a/packaging/device-manager-plugin-rpi3.spec b/packaging/device-manager-plugin-rpi3.spec
index d56e803..840044d 100755
--- a/packaging/device-manager-plugin-rpi3.spec
+++ b/packaging/device-manager-plugin-rpi3.spec
@@ -1,6 +1,6 @@
 Name:       device-manager-plugin-rpi3
 Summary:    Device manager plugin rpi3
-Version:    0.0.1
+Version:    0.0.2
 Release:    0
 Group:      System/Hardware Adaptation
 License:    Apache-2.0