X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gp2x%2Fsoc_pollux.c;h=b343e1493e2df8c516d2f43e18da4e6fa5543af9;hb=b6072c177f57cdcb32cfd5eee53b7c178f89c5d3;hp=6bea3173e55f79728b234bf9a2d104aabf689371;hpb=71769e27e90704f464bc1844daa044a5b1b24fd4;p=libpicofe.git diff --git a/gp2x/soc_pollux.c b/gp2x/soc_pollux.c index 6bea317..b343e14 100644 --- a/gp2x/soc_pollux.c +++ b/gp2x/soc_pollux.c @@ -1,3 +1,11 @@ +/* + * + * 00000000-029fffff linux (42MB) + * 02a00000-02dfffff fb (4MB, 153600B really used) + * 02e00000-02ffffff sound dma (2MB) + * 03000000-03ffffff MPEGDEC (?, 16MB) + * + */ #include #include #include @@ -13,12 +21,14 @@ #include "soc.h" #include "plat_gp2x.h" #include "../common/emu.h" +#include "../common/plat.h" #include "../common/arm_utils.h" #include "pollux_set.h" static volatile unsigned short *memregs; -static volatile unsigned long *memregl; +static volatile unsigned int *memregl; static int memdev = -1; +static int battdev = -1; extern void *gp2x_screens[4]; @@ -30,8 +40,20 @@ static int fbdev = -1; static char cpuclk_was_changed = 0; static unsigned short memtimex_old[2]; 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) { @@ -56,9 +78,32 @@ static void gp2x_video_flip2_(void) static void gp2x_video_changemode_ll_(int bpp) { + static int prev_bpp = 0; int code = 0, bytes = 2; + int rot_cmd[2] = { 0, 0 }; unsigned int r; - switch (bpp) + char buff[32]; + int ret; + + if (bpp == prev_bpp) + return; + prev_bpp = bpp; + + printf("changemode: %dbpp rot=%d\n", abs(bpp), bpp < 0); + + /* negative bpp means rotated mode */ + rot_cmd[0] = (bpp < 0) ? 6 : 5; + ret = ioctl(fbdev, _IOW('D', 90, int[2]), rot_cmd); + if (ret < 0) + perror("rot ioctl failed"); + memregl[0x4004>>2] = (bpp < 0) ? 0x013f00ef : 0x00ef013f; + memregl[0x4000>>2] |= 1 << 3; + + /* the above ioctl resets LCD timings, so set them here */ + snprintf(buff, sizeof(buff), "POLLUX_LCD_TIMINGS_%s", last_pal_setting ? "PAL" : "NTSC"); + pollux_set_fromenv(buff); + + switch (abs(bpp)) { case 8: code = 0x443a; @@ -72,12 +117,12 @@ static void gp2x_video_changemode_ll_(int bpp) break; default: - printf("unhandled bpp request: %d\n", bpp); + printf("unhandled bpp request: %d\n", abs(bpp)); return; } memregl[0x405c>>2] = bytes; - memregl[0x4060>>2] = bytes * 320; + memregl[0x4060>>2] = bytes * (bpp < 0 ? 240 : 320); r = memregl[0x4058>>2]; r = (r & 0xffff) | (code << 16) | 0x10; @@ -118,17 +163,6 @@ 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) { @@ -152,10 +186,8 @@ 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; } static void unset_lcd_custom_rate_(void) @@ -167,10 +199,72 @@ 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 */ +} + +/* note: both PLLs are programmed the same way, + * the databook incorrectly states that PLL1 differs */ +static int decode_pll(unsigned int reg) +{ + long long v; + int p, m, s; + + p = (reg >> 18) & 0x3f; + m = (reg >> 8) & 0x3ff; + s = reg & 0xff; + + if (p == 0) + p = 1; + + v = 27000000; // master clock + v = v * m / (p << s); + return v; +} + void pollux_init(void) { struct fb_fix_screeninfo fbfix; - int i, ret; + int i, ret, rate; memdev = open("/dev/mem", O_RDWR); if (memdev == -1) { @@ -219,7 +313,38 @@ 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"); + + /* find what PLL1 runs at, for the timer */ + rate = decode_pll(memregl[0xf008>>2]); + printf("PLL1 @ %dHz\n", rate); + rate /= 1000000; + + /* setup timer */ + if (1 <= rate && rate <= 256) { + if (TIMER_REG(0x08) & 8) { + fprintf(stderr, "warning: timer in use, overriding!\n"); + timer_cleanup(); + } + + TIMER_REG(0x44) = ((rate - 1) << 4) | 2; /* using PLL1, divide by it's rate */ + TIMER_REG(0x40) = 0x0c; /* clocks on */ + TIMER_REG(0x08) = 0x6b; /* run timer, clear irq, latch value */ + + gp2x_get_ticks_ms = gp2x_get_ticks_ms_; + gp2x_get_ticks_us = gp2x_get_ticks_us_; + } + else { + fprintf(stderr, "warning: could not make use of timer\n"); + + // those functions are actually not good at all on Wiz kernel + gp2x_get_ticks_ms = plat_get_ticks_ms_good; + gp2x_get_ticks_us = plat_get_ticks_us_good; + } + + pllsetreg0 = memregl[0xf004>>2]; memtimex_old[0] = memregs[0x14802>>1]; memtimex_old[1] = memregs[0x14804>>1]; @@ -230,7 +355,15 @@ void pollux_init(void) gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_; gp2x_video_wait_vsync = gp2x_video_wait_vsync_; - gp2x_set_cpuclk = gp2x_set_cpuclk_; + /* some firmwares have sys clk on PLL0, we can't adjust CPU clock + * by reprogramming the PLL0 then, as it overclocks system bus */ + if ((memregl[0xf000>>2] & 0x03000030) == 0x01000000) + gp2x_set_cpuclk = gp2x_set_cpuclk_; + else { + fprintf(stderr, "unexpected PLL config (%08x), overclocking disabled\n", + memregl[0xf000>>2]); + gp2x_set_cpuclk = NULL; + } set_lcd_custom_rate = set_lcd_custom_rate_; unset_lcd_custom_rate = unset_lcd_custom_rate_; @@ -238,6 +371,7 @@ void pollux_init(void) set_ram_timings = set_ram_timings_; unset_ram_timings = unset_ram_timings_; + gp2x_read_battery = gp2x_read_battery_; } void pollux_finish(void) @@ -245,7 +379,6 @@ void pollux_finish(void) /* switch to default fb mem, turn portrait off */ memregl[0x406C>>2] = fb_paddr[0]; memregl[0x4058>>2] |= 0x10; -// wiz_lcd_set_portrait(0); close(fbdev); gp2x_video_changemode_ll_(16); @@ -257,5 +390,7 @@ void pollux_finish(void) munmap((void *)memregs, 0x20000); close(memdev); + if (battdev >= 0) + close(battdev); }