X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gp2x%2Fgp2x.c;h=78e8561f857034c6a6bf16d7876238bfd3e4d2d9;hb=3f2aaff20c940e90e970c008e56f5253d494a92c;hp=7a5156c78f22f35be68b562977337d1e4b85802a;hpb=0480e6c9696e4d4cbd451a91a7ef63d96f60542d;p=libpicofe.git

diff --git a/gp2x/gp2x.c b/gp2x/gp2x.c
index 7a5156c..78e8561 100644
--- a/gp2x/gp2x.c
+++ b/gp2x/gp2x.c
@@ -44,7 +44,8 @@ static void *gp2x_screens[4];
 static int screensel = 0;
 //static
 int memdev = 0;
-static int sounddev = 0, mixerdev = 0;
+static int sounddev = -1, mixerdev = -1, touchdev = -1;
+static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 };
 
 void *gp2x_screen;
 
@@ -201,12 +202,12 @@ void gp2x_pd_clone_buffer2(void)
 unsigned long gp2x_joystick_read(int allow_usb_joy)
 {
 	int i;
-  	unsigned long value=(gp2x_memregs[0x1198>>1] & 0x00FF);
+  	unsigned long value=(gp2x_memregs[0x1198>>1] & 0x00FF); // GPIO M
   	if(value==0xFD) value=0xFA;
   	if(value==0xF7) value=0xEB;
   	if(value==0xDF) value=0xAF;
   	if(value==0x7F) value=0xBE;
-  	value = ~((gp2x_memregs[0x1184>>1] & 0xFF00) | value | (gp2x_memregs[0x1186>>1] << 16));
+  	value = ~((gp2x_memregs[0x1184>>1] & 0xFF00) | value | (gp2x_memregs[0x1186>>1] << 16)); // C D
 
 	if (allow_usb_joy && num_of_joys > 0) {
 		// check the usb joy as well..
@@ -218,6 +219,36 @@ unsigned long gp2x_joystick_read(int allow_usb_joy)
 	return value;
 }
 
+typedef struct ucb1x00_ts_event
+{
+	unsigned short pressure;
+	unsigned short x;
+	unsigned short y;
+	unsigned short pad;
+	struct timeval stamp;
+} UCB1X00_TS_EVENT;
+
+int gp2x_touchpad_read(int *x, int *y)
+{
+	UCB1X00_TS_EVENT event;
+	int retval;
+
+	if (touchdev < 0) return -1;
+
+	retval = read(touchdev, &event, sizeof(event));
+	if (retval < 0) {
+		printf("touch read failed %i %i\n", retval, errno);
+		return -1;
+	}
+
+	if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16;
+	if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16;
+	// printf("read %i %i %i\n", event.pressure, *x, *y);
+
+	return event.pressure;
+}
+
+
 static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
 
 void gp2x_start_sound(int rate, int bits, int stereo)
@@ -284,6 +315,31 @@ void Reset940(int yes, int bank)
 	gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03);
 }
 
+static void proc_set(const char *path, const char *val)
+{
+	FILE *f;
+	char tmp[16];
+
+	f = fopen(path, "w");
+	if (f == NULL) {
+		printf("failed to open: %s\n", path);
+		return;
+	}
+
+	fprintf(f, "0\n");
+	fclose(f);
+
+	printf("\"%s\" is set to: ", path);
+	f = fopen(path, "r");
+	if (f == NULL) {
+		printf("(open failed)\n");
+		return;
+	}
+
+	fgets(tmp, sizeof(tmp), f);
+	printf("%s", tmp);
+	fclose(f);
+}
 
 
 /* common */
@@ -307,6 +363,8 @@ void gp2x_init(void)
 	}
 	gp2x_memregl = (unsigned long *) gp2x_memregs;
 
+	gp2x_memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers
+
   	gp2x_screens[0] = mmap(0, FRAMEBUFF_WHOLESIZE, PROT_WRITE, MAP_SHARED, memdev, FRAMEBUFF_ADDR0);
 	if(gp2x_screens[0] == MAP_FAILED)
 	{
@@ -337,6 +395,22 @@ void gp2x_init(void)
 	/* init usb joys -GnoStiC */
 	gp2x_usbjoy_init();
 
+	// touchscreen
+	touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY);
+	if (touchdev >= 0) {
+		FILE *pcf = fopen("/etc/pointercal", "r");
+		if (pcf) {
+			fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1],
+				&touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]);
+			fclose(pcf);
+		}
+		printf("found touchscreen/wm97xx\n");
+	}
+
+	/* disable Linux read-ahead */
+	proc_set("/proc/sys/vm/max-readahead", "0\n");
+	proc_set("/proc/sys/vm/min-readahead", "0\n");
+
 	printf("exitting init()\n"); fflush(stdout);
 }
 
@@ -357,7 +431,8 @@ void gp2x_deinit(void)
 	munmap((void *)gp2x_memregs, 0x10000);
 	close(memdev);
 	close(mixerdev);
-	if (sounddev > 0) close(sounddev);
+	if (sounddev >= 0) close(sounddev);
+	if (touchdev >= 0) close(touchdev);
 
 	gp2x_usbjoy_deinit();