diff options
Diffstat (limited to 'frontend')
| -rw-r--r-- | frontend/plat_pollux.c | 51 |
1 files changed, 42 insertions, 9 deletions
diff --git a/frontend/plat_pollux.c b/frontend/plat_pollux.c index 4983ec7..61c1e74 100644 --- a/frontend/plat_pollux.c +++ b/frontend/plat_pollux.c @@ -33,6 +33,8 @@ static void *fb_vaddrs[2]; static unsigned int fb_paddrs[2]; static int fb_work_buf; static int cpu_clock_allowed; +static unsigned int saved_video_regs[2][6]; +#define FB_VRAM_SIZE (320*240*2*2*2) // 2 buffers with space for 24bpp mode static unsigned short *psx_vram; static unsigned int psx_vram_padds[512]; @@ -51,8 +53,9 @@ int omap_enable_layer(int enabled) static void *fb_flip(void) { - memregl[0x406C>>2] = fb_paddrs[fb_work_buf]; + memregl[0x406C>>2] = memregl[0x446C>>2] = fb_paddrs[fb_work_buf]; memregl[0x4058>>2] |= 0x10; + memregl[0x4458>>2] |= 0x10; fb_work_buf ^= 1; return fb_vaddrs[fb_work_buf]; } @@ -86,12 +89,17 @@ static void pollux_changemode(int bpp, int is_bgr) return; } - memregl[0x405c>>2] = bytes; - memregl[0x4060>>2] = 320 * bytes; + // program both MLCs so that TV-out works + memregl[0x405c>>2] = memregl[0x445c>>2] = bytes; + memregl[0x4060>>2] = memregl[0x4460>>2] = 320 * bytes; r = memregl[0x4058>>2]; r = (r & 0xffff) | (code << 16) | 0x10; memregl[0x4058>>2] = r; + + r = memregl[0x4458>>2]; + r = (r & 0xffff) | (code << 16) | 0x10; + memregl[0x4458>>2] = r; } /* note: both PLLs are programmed the same way, @@ -389,6 +397,24 @@ static void *pl_vout_flip(void) return NULL; } +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]; +} + void plat_init(void) { const char *main_fb_name = "/dev/fb0"; @@ -409,6 +435,10 @@ void plat_init(void) } 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])); + fbdev = open(main_fb_name, O_RDWR); if (fbdev == -1) { fprintf(stderr, "%s: ", main_fb_name); @@ -425,7 +455,7 @@ void plat_init(void) fb_paddrs[0] = fbfix.smem_start; fb_paddrs[1] = fb_paddrs[0] + 320*240*4; // leave space for 24bpp - fb_vaddrs[0] = mmap(0, 320*240*2*4, PROT_READ|PROT_WRITE, + fb_vaddrs[0] = mmap(0, FB_VRAM_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, fb_paddrs[0]); if (fb_vaddrs[0] == MAP_FAILED) { perror("mmap(fb_vaddrs) failed"); @@ -509,14 +539,17 @@ void plat_finish(void) { warm_finish(); timer_cleanup(); - pollux_changemode(16, 0); - fb_work_buf = 0; - fb_flip(); + + memset(fb_vaddrs[0], 0, FB_VRAM_SIZE); + 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; + munmap(fb_vaddrs[0], FB_VRAM_SIZE); + close(fbdev); if (battdev >= 0) close(battdev); - munmap(fb_vaddrs[0], 320*240*2*2); - close(fbdev); munmap((void *)memregs, 0x20000); close(memdev); } |