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/*
* ==========================================================================
*
* Filename: lcd-spi.c
*
* Description:
*
* Version: 0.01
* Created: Thursday, December 27, 2012 02:50:05 HKT
*
* Author: Sam Mei (),
* Company:
*
* ==========================================================================
*/
#include <common.h>
#include <command.h>
#include <asm/types.h>
#include <asm/errno.h>
#include <asm/byteorder.h>
#include "../../../board/wmt/include/wmt_spi.h"
#include "../../../board/wmt/include/wmt_iomux.h"
#include "../lcd.h"
#define CHIPSELECT 0
#ifndef SPI_GPIO
static void spi_ctrl_9bit_tx(u8 val, int cmd_data)
{
uint8_t buf[2],rbuf[2];
if (cmd_data)
buf[0] = (val >> 1) | BIT7;
else
buf[0] = (val >> 1) & 0x7f;
buf[1] = (val << 7);
spi_write_then_read_data(buf, rbuf, sizeof(buf), SPI_MODE_1, CHIPSELECT);
}
#else
#define CLK WMT_PIN_GP12_SPI0CLK
#define MOSI WMT_PIN_GP12_SPI0MOSI
#define MISO WMT_PIN_GP12_SPI0MISO
#define SS WMT_PIN_GP12_SPI0SS0
static void spi_gpio_9bit_tx(u8 val, int cmd_data)
{
int i;
// CS
gpio_direction_output(SS, 1);
gpio_direction_output(SS, 0);
// D/C
gpio_direction_output(MOSI, cmd_data);
gpio_direction_output(CLK, 0);
gpio_direction_output(CLK, 1);
// 8-bit value
for (i = 7; i >= 0; i--) {
gpio_direction_output(MOSI, !!(val & (1 << i)));
gpio_direction_output(CLK, 0);
gpio_direction_output(CLK, 1);
}
// CS
gpio_direction_output(SS, 1);
}
#endif
static inline void spi_9bit_tx(u8 val, int cmd_data)
{
#ifdef SPI_GPIO
spi_gpio_9bit_tx(val, cmd_data);
#else
spi_ctrl_9bit_tx(val, cmd_data);
#endif
}
static int ts8224b_cmd(u8 cmd)
{
spi_9bit_tx(cmd, 0);
return 0;
}
static int ts8224b_data(u8 data)
{
spi_9bit_tx(data, 1);
return 0;
}
/*
* setenv wmt.lcd.setup 0
* setenv wmt.display.param 2:0:24:1024:600:60
* setenv wmt.display.tmr 30000:0:78:78:480:78:4:60:800:60
*/
static int ts8224b_init(void)
{
static uint16_t settings[] = {
#include "ts8224b.h"
};
int i;
printf(" ## %s \n", __FUNCTION__);
for (i = 0; i < ARRAY_SIZE(settings); i += 2) {
ts8224b_cmd(settings[i] >> 8);
ts8224b_data(settings[i+1]);
}
ts8224b_cmd(0x11);
mdelay(120);
ts8224b_cmd(0x29);
mdelay(50);
ts8224b_cmd(0x2c);
return 0;
}
static int i2c_write(int i2c_idx, uint8_t reg, uint8_t value)
{
unsigned char data[2] = { reg, value };
struct i2c_msg_s msg[1] = {
{
.addr = 0xE0 >> 1,
.flags = I2C_M_WR,
.len = 2,
.buf = data,
},
};
if (wmt_i2c_transfer(&msg[0], 1, i2c_idx) > 0)
return 0;
printf(" ## lcd i2c1 write error %s, %d\n", __func__, __LINE__);
return -1;
}
static uint8_t init_data[] = {
0x4b, 0x01,
0x0c, 0x01,
0x05, 0x03,
0x41, 0x03,
0x10, 0x06,
0x11, 0xE0,
0x12, 0x00,
0x13, 0x3C,
0x14, 0x06,
0x15, 0x40,
0x16, 0x03,
0x17, 0x9E,
0x18, 0x00,
0x19, 0x10,
0x1a, 0x03,
0x1b, 0x84,
0x1c, 0x80,
0x1d, 0x0A,
0x1e, 0x80,
0x1f, 0x06,
0x3c, 0x17,
0x3e, 0x16,
0x36, 0x00,
0x31, 0x00,
0x35, 0x41,
0x30, 0xB0,
0x30, 0xB1,
0x00, 0x0B,
};
static int chunghwa_init(void)
{
int i;
printf(" ## %s, %d\n", __FUNCTION__, __LINE__);
for (i = 0; i < ARRAY_SIZE(init_data); i += 2) {
i2c_write(1, init_data[i], init_data[i+1]);
}
return 0;
}
enum {
LCD_SETUP_TS8224B,
LCD_SETUP_CHUNGHWA,
LCD_SETUP_MAX,
};
int lcd_spi_setup(void)
{
int id;
char *s = getenv("wmt.lcd.setup");
if (!s)
return -ENODEV;
id = simple_strtoul(s, NULL, 10);
switch (id) {
case LCD_SETUP_TS8224B:
return ts8224b_init();
case LCD_SETUP_CHUNGHWA:
return chunghwa_init();
default:
return -EINVAL;
}
}
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