static volatile unsigned short *memregs;
static volatile unsigned long *memregl;
static int memdev = -1;
+static int battdev = -1;
extern void *gp2x_screens[4];
/* 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)
+{
+ unsigned long long v64;
+ v64 = (unsigned long long)gp2x_get_ticks_us_() * 4195;
+ return v64 >> 22;
+}
+
+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;
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];
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)
munmap((void *)memregs, 0x20000);
close(memdev);
+ if (battdev >= 0)
+ close(battdev);
}