u-boot/board/bf527-ezkit/video.c

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/*
* video.c - run splash screen on lcd
*
* Copyright (c) 2007-2008 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <stdarg.h>
#include <common.h>
#include <config.h>
#include <malloc.h>
#include <asm/blackfin.h>
#include <asm/mach-common/bits/dma.h>
#include <i2c.h>
#include <linux/types.h>
#include <stdio_dev.h>
int gunzip(void *, int, unsigned char *, unsigned long *);
#define DMA_SIZE16 2
#include <asm/mach-common/bits/ppi.h>
#include <asm/mach-common/bits/timer.h>
#include <asm/bfin_logo_230x230.h>
#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;
}