+/*
+ * <random_info=mem_map>
+ * 00000000-029fffff linux (42MB)
+ * 02a00000-02dfffff fb (4MB, 153600B really used)
+ * 02e00000-02ffffff sound dma (2MB)
+ * 03000000-03ffffff MPEGDEC (?, 16MB)
+ * </random_info>
+ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static volatile unsigned short *memregs;
static volatile unsigned long *memregl;
static int memdev = -1;
+static int battdev = -1;
extern void *gp2x_screens[4];
static int last_pal_setting = 0;
+/* misc */
+static void pollux_set_fromenv(const char *env_var)
+{
+ const char *set_string;
+ set_string = getenv(env_var);
+ if (set_string)
+ pollux_set(memregs, set_string);
+ else
+ printf("env var %s not defined.\n", env_var);
+}
+
/* video stuff */
static void pollux_video_flip(int buf_count)
{
int code = 0, bytes = 2;
int rot_cmd[2] = { 0, 0 };
unsigned int r;
+ char buff[32];
int ret;
if (bpp == prev_bpp)
memregl[0x4000>>2] |= 1 << 3;
/* the above ioctl resets LCD timings, so set them here */
- set_lcd_custom_rate(last_pal_setting);
+ snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", last_pal_setting ? "PAL" : "NTSC");
+ pollux_set_fromenv(buff);
switch (abs(bpp))
{
cpuclk_was_changed = 1;
}
-/* misc */
-static void pollux_set_fromenv(const char *env_var)
-{
- const char *set_string;
- set_string = getenv(env_var);
- if (set_string)
- pollux_set(memregs, set_string);
- else
- printf("env var %s not defined.\n", env_var);
-}
-
/* RAM timings */
static void set_ram_timings_(void)
{
/* LCD refresh */
static void set_lcd_custom_rate_(int is_pal)
{
- char buff[32];
-
- snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", is_pal ? "PAL" : "NTSC");
- pollux_set_fromenv(buff);
+ /* just remember PAL/NTSC. We always set timings in _changemode_ll() */
last_pal_setting = is_pal;
}
/* 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;
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);
}