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Mike Frysinger authored
The recent 52cb4d4f commit which renamed device to stdio_dev missed the cm-bf548's video board. Signed-off-by:
Mike Frysinger <vapier@gentoo.org>
Mike Frysinger authoredThe recent 52cb4d4f commit which renamed device to stdio_dev missed the cm-bf548's video board. Signed-off-by:
video.c 8.49 KiB
/*
* 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 *);
#ifdef CONFIG_VIDEO
#define DMA_SIZE16 2
#include <asm/mach-common/bits/eppi.h>
#include <asm/bfin_logo_230x230.h>
#define LCD_X_RES 480 /*Horizontal Resolution */
#define LCD_Y_RES 272 /* Vertical Resolution */
#define LCD_BPP 24 /* Bit Per Pixel */
#define LCD_PIXEL_SIZE (LCD_BPP / 8)
#define DMA_BUS_SIZE 32
#define ACTIVE_VIDEO_MEM_OFFSET 0
/* -- Horizontal synchronizing --
*
* Timing characteristics taken from the SHARP LQ043T1DG01 datasheet
* (LCY-W-06602A Page 9 of 22)
*
* Clock Frequency 1/Tc Min 7.83 Typ 9.00 Max 9.26 MHz
*
* Period TH - 525 - Clock
* Pulse width THp - 41 - Clock
* Horizontal period THd - 480 - Clock
* Back porch THb - 2 - Clock
* Front porch THf - 2 - Clock
*
* -- Vertical synchronizing --
* Period TV - 286 - Line
* Pulse width TVp - 10 - Line
* Vertical period TVd - 272 - Line
* Back porch TVb - 2 - Line
* Front porch TVf - 2 - Line
*/
#define LCD_CLK (8*1000*1000) /* 8MHz */
/* # active data to transfer after Horizontal Delay clock */
#define EPPI_HCOUNT LCD_X_RES
/* # active lines to transfer after Vertical Delay clock */
#define EPPI_VCOUNT LCD_Y_RES
/* Samples per Line = 480 (active data) + 45 (padding) */
#define EPPI_LINE 525
/* Lines per Frame = 272 (active data) + 14 (padding) */
#define EPPI_FRAME 286
/* FS1 (Hsync) Width (Typical)*/
#define EPPI_FS1W_HBL 41
/* FS1 (Hsync) Period (Typical) */
#define EPPI_FS1P_AVPL EPPI_LINE
/* Horizontal Delay clock after assertion of Hsync (Typical) */
#define EPPI_HDELAY 43
/* FS2 (Vsync) Width = FS1 (Hsync) Period * 10 */
#define EPPI_FS2W_LVB (EPPI_LINE * 10)
/* FS2 (Vsync) Period = FS1 (Hsync) Period * Lines per Frame */
#define EPPI_FS2P_LAVF (EPPI_LINE * EPPI_FRAME)
/* Vertical Delay after assertion of Vsync (2 Lines) */
#define EPPI_VDELAY 12
#define EPPI_CLIP 0xFF00FF00
/* EPPI Control register configuration value for RGB out
* - EPPI as Output
* GP 2 frame sync mode,
* Internal Clock generation disabled, Internal FS generation enabled,
* Receives samples on EPPI_CLK raising edge, Transmits samples on EPPI_CLK falling edge,
* FS1 & FS2 are active high,
* DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
* DMA Unpacking disabled when RGB Formating is enabled, otherwise DMA unpacking enabled
* Swapping Enabled,
* One (DMA) Channel Mode,
* RGB Formatting Enabled for RGB666 output, disabled for RGB888 output
* Regular watermark - when FIFO is 100% full,
* Urgent watermark - when FIFO is 75% full
*/
#define EPPI_CONTROL (0x20136E2E)
static inline u16 get_eppi_clkdiv(u32 target_ppi_clk)
{
u32 sclk = get_sclk();
/* EPPI_CLK = (SCLK) / (2 * (EPPI_CLKDIV[15:0] + 1)) */
return (((sclk / target_ppi_clk) / 2) - 1);
}
void Init_PPI(void)
{
u16 eppi_clkdiv = get_eppi_clkdiv(LCD_CLK);
bfin_write_EPPI0_FS1W_HBL(EPPI_FS1W_HBL);
bfin_write_EPPI0_FS1P_AVPL(EPPI_FS1P_AVPL);
bfin_write_EPPI0_FS2W_LVB(EPPI_FS2W_LVB);
bfin_write_EPPI0_FS2P_LAVF(EPPI_FS2P_LAVF);
bfin_write_EPPI0_CLIP(EPPI_CLIP);
bfin_write_EPPI0_FRAME(EPPI_FRAME);
bfin_write_EPPI0_LINE(EPPI_LINE);
bfin_write_EPPI0_HCOUNT(EPPI_HCOUNT);
bfin_write_EPPI0_HDELAY(EPPI_HDELAY);
bfin_write_EPPI0_VCOUNT(EPPI_VCOUNT);
bfin_write_EPPI0_VDELAY(EPPI_VDELAY);
bfin_write_EPPI0_CLKDIV(eppi_clkdiv);
/*
* DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out)
* RGB Formatting Enabled for RGB666 output, disabled for RGB888 output */
#if defined(CONFIG_VIDEO_RGB666)
bfin_write_EPPI0_CONTROL((EPPI_CONTROL & ~DLENGTH) | DLEN_18 |
RGB_FMT_EN);
#else
bfin_write_EPPI0_CONTROL(((EPPI_CONTROL & ~DLENGTH) | DLEN_24) &
~RGB_FMT_EN);
#endif
}
#define DEB2_URGENT 0x2000 /* DEB2 Urgent */
void Init_DMA(void *dst)
{
#if defined(CONFIG_DEB_DMA_URGENT)
*pEBIU_DDRQUE |= DEB2_URGENT;
#endif
*pDMA12_START_ADDR = dst;
/* X count */
*pDMA12_X_COUNT = (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE;
*pDMA12_X_MODIFY = DMA_BUS_SIZE / 8;
/* Y count */
*pDMA12_Y_COUNT = LCD_Y_RES;
*pDMA12_Y_MODIFY = DMA_BUS_SIZE / 8;
/* DMA Config */
*pDMA12_CONFIG = WDSIZE_32 | /* 32 bit DMA */
DMA2D | /* 2D DMA */
FLOW_AUTO; /* autobuffer mode */
}
void Init_Ports(void)
{
*pPORTF_MUX = 0x00000000;
*pPORTF_FER |= 0xFFFF; /* PPI0..15 */
*pPORTG_MUX &=
~(PORT_x_MUX_0_MASK | PORT_x_MUX_1_MASK | PORT_x_MUX_2_MASK |
PORT_x_MUX_3_MASK | PORT_x_MUX_4_MASK);
*pPORTG_FER |= PG0 | PG1 | PG2 | PG3 | PG4; /* CLK, FS1, FS2, PPI16..17 */
#if !defined(CONFIG_VIDEO_RGB666)
*pPORTD_MUX &=
~(PORT_x_MUX_0_MASK | PORT_x_MUX_1_MASK | PORT_x_MUX_2_MASK |
PORT_x_MUX_3_MASK | PORT_x_MUX_4_MASK | PORT_x_MUX_5_MASK);
*pPORTD_MUX |=
(PORT_x_MUX_0_FUNC_4 | PORT_x_MUX_1_FUNC_4 | PORT_x_MUX_2_FUNC_4 |
PORT_x_MUX_3_FUNC_4 | PORT_x_MUX_4_FUNC_4 | PORT_x_MUX_5_FUNC_4);
*pPORTD_FER |= PD0 | PD1 | PD2 | PD3 | PD4 | PD5; /* PPI18..23 */
#endif
*pPORTE_FER &= ~PE3; /* DISP */
*pPORTE_DIR_SET = PE3;
*pPORTE_SET = PE3;
}
void EnableDMA(void)
{
*pDMA12_CONFIG |= DMAEN;
}
void DisableDMA(void)
{
*pDMA12_CONFIG &= ~DMAEN;}
/* enable and disable PPI functions */
void EnablePPI(void)
{
bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
}
void DisablePPI(void)
{
bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN);
}
int video_init(void *dst)
{
Init_Ports();
Init_DMA(dst);
EnableDMA();
Init_PPI();
EnablePPI();
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;
}
#endif