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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Mark Arigo
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "cpu.h"
#include "lcd.h"
#include "kernel.h"
#include "system.h"
/* The SA9200 controller closely matches the register defines for the
Samsung S6D0151 */
#define R_START_OSC 0x00
#define R_DRV_OUTPUT_CONTROL 0x01
#define R_INVERSION_CONTROL 0x02
#define R_ENTRY_MODE 0x03
#define R_DISP_CONTROL 0x07
#define R_BLANK_PERIOD_CONTROL 0x08
#define R_FRAME_CYCLE_CONTROL 0x0b
#define R_EXT_INTERFACE_CONTROL 0x0c
#define R_POWER_CONTROL1 0x10
#define R_GAMMA_CONTROL1 0x11
#define R_POWER_CONTROL2 0x12
#define R_POWER_CONTROL3 0x13
#define R_POWER_CONTROL4 0x14
#define R_RAM_ADDR_SET 0x21
#define R_WRITE_DATA_2_GRAM 0x22
#define R_RAM_READ_DATA 0x22
#define R_GAMMA_FINE_ADJ_POS1 0x30
#define R_GAMMA_FINE_ADJ_POS2 0x31
#define R_GAMMA_FINE_ADJ_POS3 0x32
#define R_GAMMA_GRAD_ADJ_POS 0x33
#define R_GAMMA_FINE_ADJ_NEG1 0x34
#define R_GAMMA_FINE_ADJ_NEG2 0x35
#define R_GAMMA_FINE_ADJ_NEG3 0x36
#define R_GAMMA_GRAD_ADJ_NEG 0x37
#define R_GAMMA_CONTROL3 0x38
#define R_GATE_SCAN_START_POS 0x40
#define R_1ST_SCR_DRV_POS 0x42
#define R_2ND_SCR_DRV_POS 0x43
#define R_HORIZ_RAM_ADDR_POS 0x44
#define R_VERT_RAM_ADDR_POS 0x45
#define R_OSC_CONTROL 0x61
#define R_LOW_POWER_MODE 0x69
#define R_PRE_DRIVING_PERIOD 0x70
#define R_GATE_OUT_PERIOD_CTRL 0x71
#define R_SOFTWARE_RESET 0x72
/* Display status */
static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
/* wait for LCD */
static inline void lcd_wait_write(void)
{
while (LCD1_CONTROL & LCD1_BUSY_MASK);
}
/* send LCD data */
static void lcd_send_data(unsigned data)
{
lcd_wait_write();
LCD1_DATA = data >> 8;
lcd_wait_write();
LCD1_DATA = data & 0xff;
}
/* send LCD command */
static void lcd_send_command(unsigned cmd)
{
lcd_wait_write();
LCD1_CMD = cmd >> 8;
lcd_wait_write();
LCD1_CMD = cmd & 0xff;
}
static void lcd_write_reg(unsigned reg, unsigned data)
{
lcd_send_command(reg);
lcd_send_data(data);
}
void lcd_init_device(void)
{
#if 0
/* This is the init done by the OF bootloader.
Re-initializing the lcd causes it to flash
a white screen, so for now disable this. */
DEV_INIT1 &= ~0x3000;
DEV_INIT1 = DEV_INIT1;
DEV_INIT2 &= ~0x400;
LCD1_CONTROL = 0x4680;
udelay(1500);
LCD1_CONTROL = 0x4684;
outl(1, 0x70003018);
LCD1_CONTROL &= ~0x200;
LCD1_CONTROL &= ~0x800;
LCD1_CONTROL &= ~0x400;
udelay(30000);
LCD1_CONTROL |= 0x1;
lcd_write_reg(R_START_OSC, 0x0001);
udelay(50000);
lcd_write_reg(R_GAMMA_CONTROL1, 0x171f);
lcd_write_reg(R_POWER_CONTROL2, 0x0001);
lcd_write_reg(R_POWER_CONTROL3, 0x08cd);
lcd_write_reg(R_POWER_CONTROL4, 0x0416);
lcd_write_reg(R_POWER_CONTROL1, 0x1208);
udelay(50000);
lcd_write_reg(R_POWER_CONTROL3, 0x081c);
udelay(200000);
lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x0a0c);
lcd_write_reg(R_INVERSION_CONTROL, 0x0200);
lcd_write_reg(R_ENTRY_MODE, 0x1030);
lcd_write_reg(R_DISP_CONTROL, 0x0005);
lcd_write_reg(R_BLANK_PERIOD_CONTROL, 0x030a);
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0000);
lcd_write_reg(R_EXT_INTERFACE_CONTROL, 0x0000);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0000);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0204);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0001);
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0600);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0607);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0305);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0707);
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0006);
lcd_write_reg(R_GAMMA_CONTROL3, 0x0400);
lcd_write_reg(R_GATE_SCAN_START_POS, 0x0000);
lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
lcd_write_reg(R_2ND_SCR_DRV_POS, 0x0000);
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
lcd_write_reg(R_VERT_RAM_ADDR_POS, 0x9f00);
lcd_write_reg(0x00a8, 0x0125);
lcd_write_reg(0x00a9, 0x0014);
lcd_write_reg(0x00a7, 0x0022);
lcd_write_reg(R_DISP_CONTROL, 0x0021);
udelay(40000);
lcd_write_reg(R_DISP_CONTROL, 0x0023);
udelay(40000);
lcd_write_reg(R_DISP_CONTROL, 0x1037);
lcd_write_reg(R_RAM_ADDR_SET, 0x0000);
#endif
}
/*** hardware configuration ***/
#if 0
int lcd_default_contrast(void)
{
return DEFAULT_CONTRAST_SETTING;
}
#endif
void lcd_set_contrast(int val)
{
(void)val;
}
void lcd_set_invert_display(bool yesno)
{
(void)yesno;
}
/* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno)
{
(void)yesno;
}
void lcd_yuv_set_options(unsigned options)
{
lcd_yuv_options = options;
}
/* Performance function to blit a YUV bitmap directly to the LCD */
void lcd_blit_yuv(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
(void)src;
(void)src_x;
(void)src_y;
(void)stride;
(void)x;
(void)y;
(void)width;
(void)height;
}
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
const fb_data *addr;
if (x + width >= LCD_WIDTH)
width = LCD_WIDTH - x;
if (y + height >= LCD_HEIGHT)
height = LCD_HEIGHT - y;
if ((width <= 0) || (height <= 0))
return; /* Nothing left to do. */
addr = &lcd_framebuffer[y][x];
do {
lcd_write_reg(R_RAM_ADDR_SET, ((y++ & 0xff) << 8) | (x & 0xff));
lcd_send_command(R_WRITE_DATA_2_GRAM);
int w = width;
do {
lcd_send_data(*addr++);
} while (--w > 0);
addr += LCD_WIDTH - width;
} while (--height > 0);
}
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