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/*
* Copyright (C) 2009
* Marek Vasut <marek.vasut@gmail.com>
*
* Heavily based on pxa255_idp platform
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <serial.h>
#include <asm/arch/hardware.h>
#include <spi.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_CMD_SPI
void lcd_start(void);
#else
inline void lcd_start(void) {};
#endif
/*
* Miscelaneous platform dependent initialisations
*/
int board_init (void)
{
/* memory and cpu-speed are setup before relocation */
/* so we do _nothing_ here */
/* arch number of Lubbock-Board */
gd->bd->bi_arch_number = MACH_TYPE_ZIPIT2;
/* adress of boot parameters */
gd->bd->bi_boot_params = 0xa0000100;
/* Enable LCD */
lcd_start();
return 0;
}
int board_late_init(void)
{
setenv("stdout", "serial");
setenv("stderr", "serial");
return 0;
}
struct serial_device *default_serial_console (void)
{
return &serial_stuart_device;
}
int dram_init (void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
return 0;
}
#ifdef CONFIG_CMD_SPI
struct {
unsigned char reg;
unsigned short data;
unsigned char mdelay;
} lcd_data[] = {
{ 0x07, 0x0000, 0 },
{ 0x13, 0x0000, 10 },
{ 0x11, 0x3004, 0 },
{ 0x14, 0x200F, 0 },
{ 0x10, 0x1a20, 0 },
{ 0x13, 0x0040, 50 },
{ 0x13, 0x0060, 0 },
{ 0x13, 0x0070, 200 },
{ 0x01, 0x0127, 0 },
{ 0x02, 0x0700, 0 },
{ 0x03, 0x1030, 0 },
{ 0x08, 0x0208, 0 },
{ 0x0B, 0x0620, 0 },
{ 0x0C, 0x0110, 0 },
{ 0x30, 0x0120, 0 },
{ 0x31, 0x0127, 0 },
{ 0x32, 0x0000, 0 },
{ 0x33, 0x0503, 0 },
{ 0x34, 0x0727, 0 },
{ 0x35, 0x0124, 0 },
{ 0x36, 0x0706, 0 },
{ 0x37, 0x0701, 0 },
{ 0x38, 0x0F00, 0 },
{ 0x39, 0x0F00, 0 },
{ 0x40, 0x0000, 0 },
{ 0x41, 0x0000, 0 },
{ 0x42, 0x013f, 0 },
{ 0x43, 0x0000, 0 },
{ 0x44, 0x013f, 0 },
{ 0x45, 0x0000, 0 },
{ 0x46, 0xef00, 0 },
{ 0x47, 0x013f, 0 },
{ 0x48, 0x0000, 0 },
{ 0x07, 0x0015, 30 },
{ 0x07, 0x0017, 0 },
{ 0x20, 0x0000, 0 },
{ 0x21, 0x0000, 0 },
{ 0x22, 0x0000, 0 },
};
void zipitz2_spi_sda(int set)
{
/* GPIO 13 */
if (set)
GPSR0 = (1 << 13);
else
GPCR0 = (1 << 13);
}
void zipitz2_spi_scl(int set)
{
/* GPIO 22 */
if (set)
GPCR0 = (1 << 22);
else
GPSR0 = (1 << 22);
}
unsigned char zipitz2_spi_read(void)
{
/* GPIO 40 */
return !!(GPLR1 & (1 << 8));
}
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
/* Always valid */
return 1;
}
void spi_cs_activate(struct spi_slave *slave)
{
/* GPIO 88 low */
GPCR2 = (1 << 24);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
/* GPIO 88 high */
GPSR2 = (1 << 24);
}
void lcd_start(void)
{
int i;
unsigned char reg[3] = { 0x74, 0x00, 0 };
unsigned char data[3] = { 0x76, 0, 0 };
unsigned char dummy[3] = { 0, 0, 0 };
/* PWM2 AF */
GAFR0_L |= 0x00800000;
/* Enable clock to all PWM */
CKEN |= 0x3;
/* Configure PWM2 */
PWM_CTRL2 = 0x4f;
PWM_PWDUTY2 = 0x2ff;
PWM_PERVAL2 = 792;
/* Toggle the reset pin to reset the LCD */
GPSR0 = (1 << 19);
udelay(100000);
GPCR0 = (1 << 19);
udelay(20000);
GPSR0 = (1 << 19);
udelay(20000);
/* Program the LCD init sequence */
for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) {
reg[0] = 0x74;
reg[1] = 0x0;
reg[2] = lcd_data[i].reg;
spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
data[0] = 0x76;
data[1] = lcd_data[i].data >> 8;
data[2] = lcd_data[i].data & 0xff;
spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
if (lcd_data[i].mdelay)
udelay(lcd_data[i].mdelay * 1000);
}
GPSR0 = (1 << 11);
}
#endif
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