32x drc functional on ARM, random adjustments

[libpicofe.git] / gp2x / soc_pollux.c

diff --git a/gp2x/soc_pollux.c b/gp2x/soc_pollux.c
index 64971a2..3b2ca2d 100644 (file)
--- a/gp2x/soc_pollux.c
+++ b/gp2x/soc_pollux.c
@@ -1,3 +1,11 @@
+/*
+ * <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>
@@ -19,6 +27,7 @@
 static volatile unsigned short *memregs;
 static volatile unsigned long  *memregl;
 static int memdev = -1;
+static int battdev = -1;
 
 extern void *gp2x_screens[4];
 
@@ -33,6 +42,17 @@ static unsigned int pllsetreg0;
 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)
 {
@@ -61,6 +81,7 @@ static void gp2x_video_changemode_ll_(int bpp)
        int code = 0, bytes = 2;
        int rot_cmd[2] = { 0, 0 };
        unsigned int r;
+       char buff[32];
        int ret;
 
        if (bpp == prev_bpp)
@@ -78,7 +99,8 @@ static void gp2x_video_changemode_ll_(int 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))
        {
@@ -140,17 +162,6 @@ static void gp2x_set_cpuclk_(unsigned int mhz)
        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)
 {
@@ -174,10 +185,7 @@ static void unset_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;
 }
 
@@ -190,6 +198,49 @@ 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 +293,19 @@ 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 +324,10 @@ 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 +346,7 @@ void pollux_finish(void)
 
        munmap((void *)memregs, 0x20000);
        close(memdev);
+       if (battdev >= 0)
+               close(battdev);
 }