X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=platform%2Fgp2x%2Fsoc_pollux.c;h=2cda031c413c0039fb9274d757a4c2b16bdc90c1;hb=21ecaf237fe6abc22272ab2cbe2724a69bc3bc8b;hp=64971a2c80bdd767909395401ceca4585d997f26;hpb=cc41eb4fa36c1ebe724efd4c81962cbc9046ac57;p=picodrive.git

diff --git a/platform/gp2x/soc_pollux.c b/platform/gp2x/soc_pollux.c
index 64971a2..2cda031 100644
--- a/platform/gp2x/soc_pollux.c
+++ b/platform/gp2x/soc_pollux.c
@@ -19,6 +19,7 @@
 static volatile unsigned short *memregs;
 static volatile unsigned long  *memregl;
 static int memdev = -1;
+static int battdev = -1;
 
 extern void *gp2x_screens[4];
 
@@ -190,6 +191,49 @@ static void set_lcd_gamma_(int g100, int A_SNs_curve)
 	/* hm, the LCD possibly can do it (but not POLLUX) */
 }
 
+static int gp2x_read_battery_(void)
+{
+	unsigned short magic_val = 0;
+
+	if (battdev < 0)
+		return -1;
+	if (read(battdev, &magic_val, sizeof(magic_val)) != sizeof(magic_val))
+		return -1;
+	switch (magic_val) {
+	default:
+	case 1:	return 100;
+	case 2: return 66;
+	case 3: return 40;
+	case 4: return 0;
+	}
+}
+
+#define TIMER_BASE3 0x1980
+#define TIMER_REG(x) memregl[(TIMER_BASE3 + x) >> 2]
+
+unsigned int gp2x_get_ticks_us_(void)
+{
+	TIMER_REG(0x08) = 0x4b;  /* run timer, latch value */
+	return TIMER_REG(0);
+}
+
+unsigned int gp2x_get_ticks_ms_(void)
+{
+	/* approximate /= 1000 */
+	unsigned long long v64;
+	v64 = (unsigned long long)gp2x_get_ticks_us_() * 4294968;
+	return v64 >> 32;
+}
+
+static void timer_cleanup(void)
+{
+	TIMER_REG(0x40) = 0x0c;	/* be sure clocks are on */
+	TIMER_REG(0x08) = 0x23;	/* stop the timer, clear irq in case it's pending */
+	TIMER_REG(0x00) = 0;	/* clear counter */
+	TIMER_REG(0x40) = 0;	/* clocks off */
+	TIMER_REG(0x44) = 0;	/* dividers back to default */
+}
+
 void pollux_init(void)
 {
 	struct fb_fix_screeninfo fbfix;
@@ -242,7 +286,19 @@ void pollux_init(void)
 	fb_work_buf = 0;
 	g_screen_ptr = gp2x_screens[0];
 
-	pllsetreg0 = memregl[0xf004];
+	battdev = open("/dev/pollux_batt", O_RDONLY);
+	if (battdev < 0)
+		perror("Warning: could't open pollux_batt");
+
+	/* setup timer */
+	if (TIMER_REG(0x08) & 8)
+		timer_cleanup();
+
+	TIMER_REG(0x44) = 0x922; /* using PLL1, divider value 147 */
+	TIMER_REG(0x40) = 0x0c;  /* clocks on */
+	TIMER_REG(0x08) = 0x6b;  /* run timer, clear irq, latch value */
+
+	pllsetreg0 = memregl[0xf004>>2];
 	memtimex_old[0] = memregs[0x14802>>1];
 	memtimex_old[1] = memregs[0x14804>>1];
 
@@ -261,6 +317,10 @@ void pollux_init(void)
 
 	set_ram_timings = set_ram_timings_;
 	unset_ram_timings = unset_ram_timings_;
+	gp2x_read_battery = gp2x_read_battery_;
+
+	gp2x_get_ticks_ms = gp2x_get_ticks_ms_;
+	gp2x_get_ticks_us = gp2x_get_ticks_us_;
 }
 
 void pollux_finish(void)
@@ -279,5 +339,7 @@ void pollux_finish(void)
 
 	munmap((void *)memregs, 0x20000);
 	close(memdev);
+	if (battdev >= 0)
+		close(battdev);
 }