From: jinhyung.jo <jinhyung.jo@samsung.com>
Date: Wed, 14 Oct 2015 06:56:34 +0000 (+0900)
Subject: tablet: Applying the screen size in the driver probing.
X-Git-Tag: TizenStudio_2.0_p2.3.2~2^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e587f9a0cc20335ca3a38ffea4519b9aa5e111e;p=sdk%2Femulator%2Femulator-kernel.git

tablet: Applying the screen size in the driver probing.

The screen size is required when the initializing driver,
in order to apply the correct absolute coordinates of the mouse.

Conflicts:
	drivers/maru/maru_virtio_tablet.c

Change-Id: Iaf385d1c482614595de4d82b7d5b434648b67d5d
Signed-off-by: Jinhyung Jo <jinhyung.jo@samsung.com>
(cherry picked from commit 91bac12b09a68f975a7a7800d9902918886e0751)
---

diff --git a/drivers/maru/maru_virtio_tablet.c b/drivers/maru/maru_virtio_tablet.c
index 225db2408998..ef22ebccb64c 100644
--- a/drivers/maru/maru_virtio_tablet.c
+++ b/drivers/maru/maru_virtio_tablet.c
@@ -46,6 +46,9 @@ MODULE_DESCRIPTION("Emulator Virtio Tablet driver");
 
 #define DEVICE_NAME "virtio-tablet"
 #define MAX_BUF_COUNT 25
+#define DEFAULT_WIDTH 1920
+#define DEFAULT_HEIGHT 1080
+#define CMDLINE_VIDEO_PARAM "video=LVDS-1:"
 
 /* This structure must match the qemu definitions */
 typedef struct EmulTabletEvent {
@@ -158,6 +161,9 @@ static void vq_tablet_callback(struct virtqueue *vq)
 static int virtio_tablet_probe(struct virtio_device *vdev)
 {
 	int ret = 0;
+	char *cmdline = NULL;
+	int width = 0;
+	int height = 0;
 
 	printk(KERN_INFO "virtio tablet driver is probed\n");
 
@@ -207,9 +213,48 @@ static int virtio_tablet_probe(struct virtio_device *vdev)
 				| BIT_MASK(EV_ABS)
 				| BIT_MASK(EV_MSC);
 
-	/* 32767 is max size of usbdevice tablet. */
-	input_abs_set_max(vtb->idev, ABS_X, 32767);
-	input_abs_set_max(vtb->idev, ABS_Y, 32767);
+	cmdline = strstr(saved_command_line, CMDLINE_VIDEO_PARAM);
+	if (cmdline != NULL) {
+		char *tmp;
+
+		cmdline += strlen(CMDLINE_VIDEO_PARAM);
+		tmp = strsep(&cmdline, "x");
+		if (tmp != NULL) {
+			ret = kstrtoint(tmp, 10, &width);
+			if (ret) {
+				printk(KERN_WARNING "cannot find the width value\n");
+				width = 0;
+			}
+
+			tmp = strsep(&cmdline, "-");
+			if (tmp != NULL) {
+				ret = kstrtoint(tmp, 10, &height);
+				if (ret) {
+					printk(KERN_WARNING "cannot find the height value\n");
+					height = 0;
+				}
+			} else {
+				printk(KERN_WARNING "Invalid bpp separator:"
+						" cannot find the height value\n");
+			}
+		} else {
+			printk(KERN_WARNING "Invalid resolution separator: "
+					" cannot find the width value\n");
+		}
+	} else {
+		printk(KERN_WARNING "cannot find the video parameter(%s) "
+				"in the kernel command line\n", CMDLINE_VIDEO_PARAM);
+	}
+
+	if (!width || !height) {
+		width = DEFAULT_WIDTH;
+		height = DEFAULT_HEIGHT;
+		printk(KERN_WARNING "cannot find the width or height, "
+			"use default values %dx%d\n", width, height);
+	}
+
+	input_set_abs_params(vtb->idev, ABS_X, 0, width, 0, 0);
+	input_set_abs_params(vtb->idev, ABS_Y, 0, height, 0, 0);
 
 	set_bit(BTN_LEFT, vtb->idev->keybit);
 	set_bit(BTN_RIGHT, vtb->idev->keybit);