/* * video.c - run splash screen on lcd * * Copyright (c) 2007-2008 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ #include #include #include #include #include #include #include #include #include int gunzip(void *, int, unsigned char *, unsigned long *); #define DMA_SIZE16 2 #include #include #include #define LCD_X_RES 320 /* Horizontal Resolution */ #define LCD_Y_RES 240 /* Vertical Resolution */ #define LCD_BPP 24 /* Bit Per Pixel */ #define LCD_PIXEL_SIZE (LCD_BPP / 8) #define DMA_BUS_SIZE 16 #define LCD_CLK (12*1000*1000) /* 12MHz */ #define CLOCKS_PER_PIX 3 /* HS and VS timing parameters (all in number of PPI clk ticks) */ #define H_ACTPIX (LCD_X_RES * CLOCKS_PER_PIX) /* active horizontal pixel */ #define H_PERIOD (408 * CLOCKS_PER_PIX) /* HS period */ #define H_PULSE 90 /* HS pulse width */ #define H_START 204 /* first valid pixel */ #define U_LINE 1 /* Blanking Lines */ #define V_LINES (LCD_Y_RES + U_LINE) /* total vertical lines */ #define V_PULSE (3 * H_PERIOD) /* VS pulse width (1-5 H_PERIODs) */ #define V_PERIOD (H_PERIOD * V_LINES) /* VS period */ #define ACTIVE_VIDEO_MEM_OFFSET (U_LINE * H_ACTPIX) #define PPI_TX_MODE 0x2 #define PPI_XFER_TYPE_11 0xC #define PPI_PORT_CFG_01 0x10 #define PPI_PACK_EN 0x80 #define PPI_POLS_1 0x8000 /* enable and disable PPI functions */ void EnablePPI(void) { *pPPI_CONTROL |= PORT_EN; } void DisablePPI(void) { *pPPI_CONTROL &= ~PORT_EN; } void Init_Ports(void) { *pPORTF_MUX &= ~PORT_x_MUX_0_MASK; *pPORTF_MUX |= PORT_x_MUX_0_FUNC_1; *pPORTF_FER |= PF0 | PF1 | PF2 | PF3 | PF4 | PF5 | PF6 | PF7; *pPORTG_MUX &= ~PORT_x_MUX_1_MASK; *pPORTG_MUX |= PORT_x_MUX_1_FUNC_1; *pPORTG_FER |= PG5; } void Init_PPI(void) { *pPPI_DELAY = H_START; *pPPI_COUNT = (H_ACTPIX-1); *pPPI_FRAME = 0; /* PPI control, to be replaced with definitions */ *pPPI_CONTROL = PPI_TX_MODE | /* output mode , PORT_DIR */ PPI_XFER_TYPE_11 | /* sync mode XFR_TYPE */ PPI_PORT_CFG_01 | /* two frame sync PORT_CFG */ PPI_PACK_EN | /* packing enabled PACK_EN */ PPI_POLS_1; /* faling edge syncs POLS */ } void Init_DMA(void *dst) { *pDMA0_START_ADDR = dst; /* X count */ *pDMA0_X_COUNT = H_ACTPIX / 2; *pDMA0_X_MODIFY = DMA_BUS_SIZE / 8; /* Y count */ *pDMA0_Y_COUNT = V_LINES; *pDMA0_Y_MODIFY = DMA_BUS_SIZE / 8; /* DMA Config */ *pDMA0_CONFIG = WDSIZE_16 | /* 16 bit DMA */ DMA2D | /* 2D DMA */ FLOW_AUTO; /* autobuffer mode */ } void EnableDMA(void) { *pDMA0_CONFIG |= DMAEN; } void DisableDMA(void) { *pDMA0_CONFIG &= ~DMAEN; } /* Init TIMER0 as Frame Sync 1 generator */ void InitTIMER0(void) { *pTIMER_DISABLE |= TIMDIS0; /* disable Timer */ SSYNC(); *pTIMER_STATUS |= TIMIL0 | TOVF_ERR0 | TRUN0; /* clear status */ SSYNC(); *pTIMER0_PERIOD = H_PERIOD; SSYNC(); *pTIMER0_WIDTH = H_PULSE; SSYNC(); *pTIMER0_CONFIG = PWM_OUT | PERIOD_CNT | TIN_SEL | CLK_SEL | EMU_RUN; SSYNC(); } void EnableTIMER0(void) { *pTIMER_ENABLE |= TIMEN0; SSYNC(); } void DisableTIMER0(void) { *pTIMER_DISABLE |= TIMDIS0; SSYNC(); } void InitTIMER1(void) { *pTIMER_DISABLE |= TIMDIS1; /* disable Timer */ SSYNC(); *pTIMER_STATUS |= TIMIL1 | TOVF_ERR1 | TRUN1; /* clear status */ SSYNC(); *pTIMER1_PERIOD = V_PERIOD; SSYNC(); *pTIMER1_WIDTH = V_PULSE; SSYNC(); *pTIMER1_CONFIG = PWM_OUT | PERIOD_CNT | TIN_SEL | CLK_SEL | EMU_RUN; SSYNC(); } void EnableTIMER1(void) { *pTIMER_ENABLE |= TIMEN1; SSYNC(); } void DisableTIMER1(void) { *pTIMER_DISABLE |= TIMDIS1; SSYNC(); } int video_init(void *dst) { Init_Ports(); Init_DMA(dst); EnableDMA(); InitTIMER0(); InitTIMER1(); Init_PPI(); EnablePPI(); /* Frame sync 2 (VS) needs to start at least one PPI clk earlier */ EnableTIMER1(); /* Add Some Delay ... */ SSYNC(); SSYNC(); SSYNC(); SSYNC(); /* now start frame sync 1 */ EnableTIMER0(); return 0; } static void dma_bitblit(void *dst, fastimage_t *logo, int x, int y) { if (dcache_status()) blackfin_dcache_flush_range(logo->data, logo->data + logo->size); bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); /* Setup destination start address */ bfin_write_MDMA_D0_START_ADDR(dst + ((x & -2) * LCD_PIXEL_SIZE) + (y * LCD_X_RES * LCD_PIXEL_SIZE)); /* Setup destination xcount */ bfin_write_MDMA_D0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16); /* Setup destination xmodify */ bfin_write_MDMA_D0_X_MODIFY(DMA_SIZE16); /* Setup destination ycount */ bfin_write_MDMA_D0_Y_COUNT(logo->height); /* Setup destination ymodify */ bfin_write_MDMA_D0_Y_MODIFY((LCD_X_RES - logo->width) * LCD_PIXEL_SIZE + DMA_SIZE16); /* Setup Source start address */ bfin_write_MDMA_S0_START_ADDR(logo->data); /* Setup Source xcount */ bfin_write_MDMA_S0_X_COUNT(logo->width * LCD_PIXEL_SIZE / DMA_SIZE16); /* Setup Source xmodify */ bfin_write_MDMA_S0_X_MODIFY(DMA_SIZE16); /* Setup Source ycount */ bfin_write_MDMA_S0_Y_COUNT(logo->height); /* Setup Source ymodify */ bfin_write_MDMA_S0_Y_MODIFY(DMA_SIZE16); /* Enable source DMA */ bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16 | DMA2D); SSYNC(); bfin_write_MDMA_D0_CONFIG(WNR | DMAEN | WDSIZE_16 | DMA2D); while (bfin_read_MDMA_D0_IRQ_STATUS() & DMA_RUN); bfin_write_MDMA_S0_IRQ_STATUS(bfin_read_MDMA_S0_IRQ_STATUS() | DMA_DONE | DMA_ERR); bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_DONE | DMA_ERR); } void video_putc(const char c) { } void video_puts(const char *s) { } int drv_video_init(void) { int error, devices = 1; struct stdio_dev videodev; u8 *dst; u32 fbmem_size = LCD_X_RES * LCD_Y_RES * LCD_PIXEL_SIZE + ACTIVE_VIDEO_MEM_OFFSET; dst = malloc(fbmem_size); if (dst == NULL) { printf("Failed to alloc FB memory\n"); return -1; } #ifdef EASYLOGO_ENABLE_GZIP unsigned char *data = EASYLOGO_DECOMP_BUFFER; unsigned long src_len = EASYLOGO_ENABLE_GZIP; if (gunzip(data, bfin_logo.size, bfin_logo.data, &src_len)) { puts("Failed to decompress logo\n"); free(dst); return -1; } bfin_logo.data = data; #endif memset(dst + ACTIVE_VIDEO_MEM_OFFSET, bfin_logo.data[0], fbmem_size - ACTIVE_VIDEO_MEM_OFFSET); dma_bitblit(dst + ACTIVE_VIDEO_MEM_OFFSET, &bfin_logo, (LCD_X_RES - bfin_logo.width) / 2, (LCD_Y_RES - bfin_logo.height) / 2); video_init(dst); /* Video initialization */ memset(&videodev, 0, sizeof(videodev)); strcpy(videodev.name, "video"); videodev.ext = DEV_EXT_VIDEO; /* Video extensions */ videodev.flags = DEV_FLAGS_SYSTEM; /* No Output */ videodev.putc = video_putc; /* 'putc' function */ videodev.puts = video_puts; /* 'puts' function */ error = stdio_register(&videodev); return (error == 0) ? devices : error; }