From afdbb7c87325a4a6280943564da2e9e19cefc55b Mon Sep 17 00:00:00 2001 From: notaz Date: Mon, 5 Nov 2012 00:02:34 +0200 Subject: [PATCH] merge some pollux code from PCSX --- gp2x/in_gp2x.c | 2 +- gp2x/soc_pollux.c | 297 ++++++++++++++++++++++++++++++++++++++++------ gp2x/soc_pollux.h | 4 + input.c | 4 - 4 files changed, 267 insertions(+), 40 deletions(-) diff --git a/gp2x/in_gp2x.c b/gp2x/in_gp2x.c index 4c6b833..4599a3e 100644 --- a/gp2x/in_gp2x.c +++ b/gp2x/in_gp2x.c @@ -208,7 +208,7 @@ static const struct { #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0])) -static int in_gp2x_menu_translate(void *drv_data, int keycode) +static int in_gp2x_menu_translate(void *drv_data, int keycode, char *charcode) { int i; if (keycode < 0) diff --git a/gp2x/soc_pollux.c b/gp2x/soc_pollux.c index 39f8955..a773ae1 100644 --- a/gp2x/soc_pollux.c +++ b/gp2x/soc_pollux.c @@ -27,19 +27,27 @@ #include #include #include +#include #include "soc.h" #include "plat_gp2x.h" -#include "../emu.h" #include "../plat.h" -#include "../arm_utils.h" -#include "pollux_set.h" -static volatile unsigned short *memregs; -static volatile unsigned int *memregl; -static int memdev = -1; -static int battdev = -1; +volatile unsigned short *memregs; +volatile unsigned int *memregl; +int memdev = -1; +int gp2x_dev_id; +static int battdev = -1, mixerdev = -1; +static int cpu_clock_allowed; +static unsigned int saved_video_regs[2][6]; + +#ifndef ARRAY_SIZE +#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) +#endif + +// TODO FIXME: merge +#if 0 extern void *gp2x_screens[4]; #define fb_buf_count 4 @@ -244,34 +252,6 @@ static unsigned int gp2x_get_ticks_ms_(void) 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; -} - int pollux_get_real_snd_rate(int req_rate) { int clk0_src, clk1_src, rate, div; @@ -439,4 +419,251 @@ void pollux_finish(void) if (battdev >= 0) close(battdev); } +#endif + +/* 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; +} + +#define TIMER_BASE3 0x1980 +#define TIMER_REG(x) memregl[(TIMER_BASE3 + x) >> 2] + +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 */ +} + +static void save_multiple_regs(unsigned int *dest, int base, int count) +{ + const volatile unsigned int *regs = memregl + base / 4; + int i; + + for (i = 0; i < count; i++) + dest[i] = regs[i]; +} + +static void restore_multiple_regs(int base, const unsigned int *src, int count) +{ + volatile unsigned int *regs = memregl + base / 4; + int i; + + for (i = 0; i < count; i++) + regs[i] = src[i]; +} + +/* newer API */ +static int pollux_cpu_clock_get(void) +{ + return decode_pll(memregl[0xf004>>2]) / 1000000; +} + +int pollux_cpu_clock_set(int mhz) +{ + int adiv, mdiv, pdiv, sdiv = 0; + int i, vf000, vf004; + + if (!cpu_clock_allowed) + return -1; + if (mhz == pollux_cpu_clock_get()) + return 0; + + // m = MDIV, p = PDIV, s = SDIV + #define SYS_CLK_FREQ 27 + pdiv = 9; + mdiv = (mhz * pdiv) / SYS_CLK_FREQ; + if (mdiv & ~0x3ff) + return -1; + vf004 = (pdiv<<18) | (mdiv<<8) | sdiv; + + // attempt to keep the AHB divider close to 250, but not higher + for (adiv = 1; mhz / adiv > 250; adiv++) + ; + + vf000 = memregl[0xf000>>2]; + vf000 = (vf000 & ~0x3c0) | ((adiv - 1) << 6); + memregl[0xf000>>2] = vf000; + memregl[0xf004>>2] = vf004; + memregl[0xf07c>>2] |= 0x8000; + for (i = 0; (memregl[0xf07c>>2] & 0x8000) && i < 0x100000; i++) + ; + + printf("clock set to %dMHz, AHB set to %dMHz\n", mhz, mhz / adiv); + return 0; +} + +static int pollux_bat_capacity_get(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; + } +} + +static int step_volume(int is_up) +{ + static int volume = 50; + int ret, val; + + if (mixerdev < 0) + return -1; + + if (is_up) { + volume += 5; + if (volume > 255) volume = 255; + } + else { + volume -= 5; + if (volume < 0) volume = 0; + } + val = volume; + val |= val << 8; + + ret = ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &val); + if (ret == -1) + perror("WRITE_PCM"); + + return ret; +} + +struct plat_target plat_target = { + pollux_cpu_clock_get, + pollux_cpu_clock_set, + pollux_bat_capacity_get, + + .step_volume = step_volume, +}; + +int plat_target_init(void) +{ + int rate, timer_div, timer_div2; + FILE *f; + + memdev = open("/dev/mem", O_RDWR); + if (memdev == -1) { + perror("open(/dev/mem) failed"); + exit(1); + } + + memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, + memdev, 0xc0000000); + if (memregs == MAP_FAILED) { + perror("mmap(memregs) failed"); + exit(1); + } + memregl = (volatile void *)memregs; + + // save video regs of both MLCs + save_multiple_regs(saved_video_regs[0], 0x4058, ARRAY_SIZE(saved_video_regs[0])); + save_multiple_regs(saved_video_regs[1], 0x4458, ARRAY_SIZE(saved_video_regs[1])); + + /* 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) + cpu_clock_allowed = 1; + else { + cpu_clock_allowed = 0; + fprintf(stderr, "unexpected PLL config (%08x), overclocking disabled\n", + memregl[0xf000>>2]); + } + + /* find what PLL1 runs at, for the timer */ + rate = decode_pll(memregl[0xf008>>2]); + printf("PLL1 @ %dHz\n", rate); + + /* setup timer */ + timer_div = (rate + 500000) / 1000000; + timer_div2 = 0; + while (timer_div > 256) { + timer_div /= 2; + timer_div2++; + } + if (1 <= timer_div && timer_div <= 256 && timer_div2 < 4) { + int timer_rate = (rate >> timer_div2) / timer_div; + if (TIMER_REG(0x08) & 8) { + fprintf(stderr, "warning: timer in use, overriding!\n"); + timer_cleanup(); + } + if (timer_rate != 1000000) + fprintf(stderr, "warning: timer drift %d us\n", timer_rate - 1000000); + + timer_div2 = (timer_div2 + 3) & 3; + TIMER_REG(0x44) = ((timer_div - 1) << 4) | 2; /* using PLL1 */ + TIMER_REG(0x40) = 0x0c; /* clocks on */ + TIMER_REG(0x08) = 0x68 | timer_div2; /* run timer, clear irq, latch value */ + } + else + fprintf(stderr, "warning: could not make use of timer\n"); + + battdev = open("/dev/pollux_batt", O_RDONLY); + if (battdev < 0) + perror("Warning: could't open pollux_batt"); + + f = fopen("/dev/accel", "rb"); + if (f) { + printf("detected Caanoo\n"); + gp2x_dev_id = GP2X_DEV_CAANOO; + fclose(f); + } + else { + printf("detected Wiz\n"); + gp2x_dev_id = GP2X_DEV_WIZ; + } + + mixerdev = open("/dev/mixer", O_RDWR); + if (mixerdev == -1) + perror("open(/dev/mixer)"); + + return 0; +} + +/* to be called after in_probe */ +void plat_target_setup_input(void) +{ +} +void plat_target_finish(void) +{ + timer_cleanup(); + + restore_multiple_regs(0x4058, saved_video_regs[0], + ARRAY_SIZE(saved_video_regs[0])); + restore_multiple_regs(0x4458, saved_video_regs[1], + ARRAY_SIZE(saved_video_regs[1])); + memregl[0x4058>>2] |= 0x10; + memregl[0x4458>>2] |= 0x10; + + if (battdev >= 0) + close(battdev); + if (mixerdev >= 0) + close(mixerdev); + munmap((void *)memregs, 0x20000); + close(memdev); +} diff --git a/gp2x/soc_pollux.h b/gp2x/soc_pollux.h index f26e594..57b350c 100644 --- a/gp2x/soc_pollux.h +++ b/gp2x/soc_pollux.h @@ -1,2 +1,6 @@ +extern volatile unsigned short *memregs; +extern volatile unsigned int *memregl; +extern int memdev; + int pollux_get_real_snd_rate(int req_rate); diff --git a/input.c b/input.c index 3881858..8030e1f 100644 --- a/input.c +++ b/input.c @@ -17,10 +17,6 @@ #include "plat.h" #include "lprintf.h" -#ifdef IN_GP2X -#error needs update: in_gp2x_init in_gp2x_update -#include "../gp2x/in_gp2x.h" -#endif #ifdef IN_VK #error needs update: in_vk_init in_vk_update #include "../win32/in_vk.h" -- 2.39.2