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u-boot/board/bf527-ezkit/video.c
Simon Glass 91d0be1dd8 stdio: Remove redundant code around stdio_register() calls 
There is no point in setting a structure's memory to NULL when it has
already been zeroed with memset().

Also, there is no need to create a stub function for stdio to call - if the
function is NULL it will not be called.

This is a clean-up, with no change in functionality.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
2014-07-23 14:07:23 +01:00

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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/portmux.h>
#include <asm/mach-common/bits/dma.h>
#include <spi.h>
#include <linux/types.h>
#include <stdio_dev.h>
#include <lzma/LzmaTypes.h>
#include <lzma/LzmaDec.h>
#include <lzma/LzmaTools.h>
#include <asm/mach-common/bits/ppi.h>
#include <asm/mach-common/bits/timer.h>
#define LCD_X_RES 320 /* Horizontal Resolution */
#define LCD_Y_RES 240 /* Vertical Resolution */
#define DMA_BUS_SIZE 16
#include EASYLOGO_HEADER
#ifdef CONFIG_BF527_EZKIT_REV_2_1 /* lq035q1 */
/* Interface 16/18-bit TFT over an 8-bit wide PPI using a
* small Programmable Logic Device (CPLD)
* http://blackfin.uclinux.org/gf/project/stamp/frs/?action=FrsReleaseBrowse&frs_package_id=165
*/
#ifdef CONFIG_LQ035Q1_USE_RGB565_8_BIT_PPI
#define LCD_BPP 16 /* Bit Per Pixel */
#define CLOCKS_PPIX 2 /* Clocks per pixel */
#define CPLD_DELAY 3 /* RGB565 pipeline delay */
#endif
#ifdef CONFIG_LQ035Q1_USE_RGB888_8_BIT_PPI
#define LCD_BPP 24 /* Bit Per Pixel */
#define CLOCKS_PPIX 3 /* Clocks per pixel */
#define CPLD_DELAY 5 /* RGB888 pipeline delay */
#endif
/*
* HS and VS timing parameters (all in number of PPI clk ticks)
*/
#define H_ACTPIX (LCD_X_RES * CLOCKS_PPIX) /* active horizontal pixel */
#define H_PERIOD (336 * CLOCKS_PPIX) /* HS period */
#define H_PULSE (2 * CLOCKS_PPIX) /* HS pulse width */
#define H_START (7 * CLOCKS_PPIX + CPLD_DELAY) /* first valid pixel */
#define U_LINE 4 /* Blanking Lines */
#define V_LINES (LCD_Y_RES + U_LINE) /* total vertical lines */
#define V_PULSE (2 * CLOCKS_PPIX) /* VS pulse width (1-5 H_PERIODs) */
#define V_PERIOD (H_PERIOD * V_LINES) /* VS period */
#define ACTIVE_VIDEO_MEM_OFFSET ((U_LINE / 2) * LCD_X_RES * (LCD_BPP / 8))
/*
* LCD Modes
*/
#define LQ035_RL (0 << 8) /* Right -> Left Scan */
#define LQ035_LR (1 << 8) /* Left -> Right Scan */
#define LQ035_TB (1 << 9) /* Top -> Botton Scan */
#define LQ035_BT (0 << 9) /* Botton -> Top Scan */
#define LQ035_BGR (1 << 11) /* Use BGR format */
#define LQ035_RGB (0 << 11) /* Use RGB format */
#define LQ035_NORM (1 << 13) /* Reversal */
#define LQ035_REV (0 << 13) /* Reversal */
#define LQ035_INDEX 0x74
#define LQ035_DATA 0x76
#define LQ035_DRIVER_OUTPUT_CTL 0x1
#define LQ035_SHUT_CTL 0x11
#define LQ035_DRIVER_OUTPUT_MASK (LQ035_LR | LQ035_TB | LQ035_BGR | LQ035_REV)
#define LQ035_DRIVER_OUTPUT_DEFAULT (0x2AEF & ~LQ035_DRIVER_OUTPUT_MASK)
#define LQ035_SHUT (1 << 0) /* Shutdown */
#define LQ035_ON (0 << 0) /* Shutdown */
#ifndef CONFIG_LQ035Q1_LCD_MODE
#define CONFIG_LQ035Q1_LCD_MODE (LQ035_NORM | LQ035_RL | LQ035_TB | LQ035_BGR)
#endif
#else /* t350mcqb */
#define LCD_BPP 24 /* Bit Per Pixel */
#define CLOCKS_PPIX 3 /* Clocks per pixel */
/* HS and VS timing parameters (all in number of PPI clk ticks) */
#define H_ACTPIX (LCD_X_RES * CLOCKS_PPIX) /* active horizontal pixel */
#define H_PERIOD (408 * CLOCKS_PPIX) /* 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)
#endif
#define LCD_PIXEL_SIZE (LCD_BPP / 8)
#define DMA_SIZE16 2
#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
#ifdef CONFIG_BF527_EZKIT_REV_2_1
static struct spi_slave *slave;
static int lq035q1_control(unsigned char reg, unsigned short value)
{
int ret;
u8 regs[3] = {LQ035_INDEX, 0, 0};
u8 data[3] = {LQ035_DATA, 0, 0};
u8 dummy[3];
regs[2] = reg;
data[1] = value >> 8;
data[2] = value & 0xFF;
if (!slave) {
/* FIXME: Verify the max SCK rate */
slave = spi_setup_slave(CONFIG_LQ035Q1_SPI_BUS,
CONFIG_LQ035Q1_SPI_CS, 20000000,
SPI_MODE_3);
if (!slave)
return -1;
}
if (spi_claim_bus(slave))
return -1;
ret = spi_xfer(slave, 24, regs, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
ret |= spi_xfer(slave, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
spi_release_bus(slave);
return ret;
}
#endif
/* enable and disable PPI functions */
void EnablePPI(void)
{
bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
}
void DisablePPI(void)
{
bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
}
void Init_Ports(void)
{
const unsigned short pins[] = {
P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3, P_PPI0_D4,
P_PPI0_D5, P_PPI0_D6, P_PPI0_D7, P_PPI0_FS2, 0,
};
peripheral_request_list(pins, "lcd");
}
void Init_PPI(void)
{
bfin_write_PPI_DELAY(H_START);
bfin_write_PPI_COUNT(H_ACTPIX - 1);
bfin_write_PPI_FRAME(V_LINES);
/* PPI control, to be replaced with definitions */
bfin_write_PPI_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)
{
bfin_write_DMA0_START_ADDR(dst);
/* X count */
bfin_write_DMA0_X_COUNT(H_ACTPIX / 2);
bfin_write_DMA0_X_MODIFY(DMA_BUS_SIZE / 8);
/* Y count */
bfin_write_DMA0_Y_COUNT(V_LINES);
bfin_write_DMA0_Y_MODIFY(DMA_BUS_SIZE / 8);
/* DMA Config */
bfin_write_DMA0_CONFIG(
WDSIZE_16 | /* 16 bit DMA */
DMA2D | /* 2D DMA */
FLOW_AUTO /* autobuffer mode */
);
}
void EnableDMA(void)
{
bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() | DMAEN);
}
void DisableDMA(void)
{
bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
}
/* Init TIMER0 as Frame Sync 1 generator */
void InitTIMER0(void)
{
bfin_write_TIMER_DISABLE(TIMDIS0); /* disable Timer */
SSYNC();
bfin_write_TIMER_STATUS(TIMIL0 | TOVF_ERR0 | TRUN0); /* clear status */
SSYNC();
bfin_write_TIMER0_PERIOD(H_PERIOD);
SSYNC();
bfin_write_TIMER0_WIDTH(H_PULSE);
SSYNC();
bfin_write_TIMER0_CONFIG(
PWM_OUT |
PERIOD_CNT |
TIN_SEL |
CLK_SEL |
EMU_RUN
);
SSYNC();
}
void EnableTIMER0(void)
{
bfin_write_TIMER_ENABLE(TIMEN0);
SSYNC();
}
void DisableTIMER0(void)
{
bfin_write_TIMER_DISABLE(TIMDIS0);
SSYNC();
}
void InitTIMER1(void)
{
bfin_write_TIMER_DISABLE(TIMDIS1); /* disable Timer */
SSYNC();
bfin_write_TIMER_STATUS(TIMIL1 | TOVF_ERR1 | TRUN1); /* clear status */
SSYNC();
bfin_write_TIMER1_PERIOD(V_PERIOD);
SSYNC();
bfin_write_TIMER1_WIDTH(V_PULSE);
SSYNC();
bfin_write_TIMER1_CONFIG(
PWM_OUT |
PERIOD_CNT |
TIN_SEL |
CLK_SEL |
EMU_RUN
);
SSYNC();
}
void EnableTIMER1(void)
{
bfin_write_TIMER_ENABLE(TIMEN1);
SSYNC();
}
void DisableTIMER1(void)
{
bfin_write_TIMER_DISABLE(TIMDIS1);
SSYNC();
}
void EnableTIMER12(void)
{
bfin_write_TIMER_ENABLE(TIMEN1 | TIMEN0);
SSYNC();
}
int video_init(void *dst)
{
#ifdef CONFIG_BF527_EZKIT_REV_2_1
lq035q1_control(LQ035_SHUT_CTL, LQ035_ON);
lq035q1_control(LQ035_DRIVER_OUTPUT_CTL, (CONFIG_LQ035Q1_LCD_MODE &
LQ035_DRIVER_OUTPUT_MASK) | LQ035_DRIVER_OUTPUT_DEFAULT);
#endif
Init_Ports();
Init_DMA(dst);
EnableDMA();
InitTIMER0();
InitTIMER1();
Init_PPI();
EnablePPI();
#ifdef CONFIG_BF527_EZKIT_REV_2_1
EnableTIMER12();
#else
/* 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();
#endif
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_stop(void)
{
DisablePPI();
DisableDMA();
DisableTIMER0();
DisableTIMER1();
#ifdef CONFIG_BF527_EZKIT_REV_2_1
lq035q1_control(LQ035_SHUT_CTL, LQ035_SHUT);
#endif
}
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;
error = gunzip(data, bfin_logo.size, bfin_logo.data, &src_len);
bfin_logo.data = data;
#elif defined(EASYLOGO_ENABLE_LZMA)
unsigned char *data = EASYLOGO_DECOMP_BUFFER;
SizeT lzma_len = bfin_logo.size;
error = lzmaBuffToBuffDecompress(data, &lzma_len,
bfin_logo.data, EASYLOGO_ENABLE_LZMA);
bfin_logo.data = data;
#else
error = 0;
#endif
if (error) {
puts("Failed to decompress logo\n");
free(dst);
return -1;
}
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 */
error = stdio_register(&videodev);
return (error == 0) ? devices : error;
}
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