305 lines
8.9 KiB
C
305 lines
8.9 KiB
C
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||
|
|
* \/ \/ \/ \/ \/
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* Copyright (C) 2011 Marcin Bukat
|
||
|
|
*
|
||
|
|
* 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 "kernel.h"
|
||
|
|
#include "lcd.h"
|
||
|
|
#include "system.h"
|
||
|
|
#include "cpu.h"
|
||
|
|
#include "spfd5420a.h"
|
||
|
|
|
||
|
|
static inline void delay_nop(int cycles)
|
||
|
|
{
|
||
|
|
asm volatile ("1: subs %[n], %[n], #1 \n\t"
|
||
|
|
" bne 1b"
|
||
|
|
:
|
||
|
|
: [n] "r" (cycles));
|
||
|
|
}
|
||
|
|
|
||
|
|
static unsigned int lcd_data_transform(unsigned int data)
|
||
|
|
{
|
||
|
|
/* 18 bit interface */
|
||
|
|
unsigned int r, g, b;
|
||
|
|
r = (data & 0x0000fc00)<<8;
|
||
|
|
/* g = ((data & 0x00000300) >> 2) | ((data & 0x000000e0) >> 3); */
|
||
|
|
g = ((data & 0x00000300) << 6) | ((data & 0x000000e0) << 5);
|
||
|
|
b = (data & 0x00000001f) << 3;
|
||
|
|
|
||
|
|
return (r | g | b);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* converts RGB565 pixel into internal lcd bus format */
|
||
|
|
static unsigned int lcd_pixel_transform(unsigned short rgb565)
|
||
|
|
{
|
||
|
|
unsigned int r, g, b;
|
||
|
|
b = rgb565 & 0x1f;
|
||
|
|
g = (rgb565 >> 5) & 0x3f;
|
||
|
|
r = (rgb565 >> 11) & 0x1f;
|
||
|
|
|
||
|
|
return r<<19 | g<<10 | b<<3;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lcd_cmd(unsigned int cmd)
|
||
|
|
{
|
||
|
|
LCD_COMMAND = lcd_data_transform(cmd);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lcd_data(unsigned int data)
|
||
|
|
{
|
||
|
|
LCD_DATA = lcd_data_transform(data);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lcd_write_reg(unsigned int reg, unsigned int val)
|
||
|
|
{
|
||
|
|
lcd_cmd(reg);
|
||
|
|
lcd_data(val);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lcdctrl_bypass(unsigned int on_off)
|
||
|
|
{
|
||
|
|
while (!(LCDC_STA & LCDC_MCU_IDLE));
|
||
|
|
|
||
|
|
if (on_off)
|
||
|
|
MCU_CTRL |= MCU_CTRL_BYPASS;
|
||
|
|
else
|
||
|
|
MCU_CTRL &= ~MCU_CTRL_BYPASS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* This part is unclear. I am unable to use buffered/FIFO based writes
|
||
|
|
* to lcd. Depending on settings of IF I get various patterns on display
|
||
|
|
* but not what I want to display apparently.
|
||
|
|
*/
|
||
|
|
static void lcdctrl_init(void)
|
||
|
|
{
|
||
|
|
/* alpha b111
|
||
|
|
* stop at current frame complete
|
||
|
|
* MCU mode
|
||
|
|
* 24b RGB
|
||
|
|
*/
|
||
|
|
LCDC_CTRL = ALPHA(7) | LCDC_STOP | LCDC_MCU | RGB24B;
|
||
|
|
MCU_CTRL = ALPHA_BASE(0x3f) | MCU_CTRL_BYPASS;
|
||
|
|
|
||
|
|
HOR_ACT = 400 + 3; /* define horizonatal active region */
|
||
|
|
VERT_ACT = 240; /* define vertical active region */
|
||
|
|
VERT_PERIOD = 0xfff; /* CSn/WEn/RDn signal timings */
|
||
|
|
|
||
|
|
LINE0_YADDR = LINE_ALPHA_EN | 0x7fe;
|
||
|
|
LINE1_YADDR = LINE_ALPHA_EN | ((1 * 400) - 2);
|
||
|
|
LINE2_YADDR = LINE_ALPHA_EN | ((2 * 400) - 2);
|
||
|
|
LINE3_YADDR = LINE_ALPHA_EN | ((3 * 400) - 2);
|
||
|
|
|
||
|
|
LINE0_UVADDR = 0x7fe + 1;
|
||
|
|
LINE1_UVADDR = ((1 * 400) - 2 + 1);
|
||
|
|
LINE2_UVADDR = ((2 * 400) - 2 + 1);
|
||
|
|
LINE3_UVADDR = ((3 * 400) - 2 + 1);
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
LINE0_YADDR = 0;
|
||
|
|
LINE1_YADDR = (1 * 400);
|
||
|
|
LINE2_YADDR = (2 * 400);
|
||
|
|
LINE3_YADDR = (3 * 400);
|
||
|
|
|
||
|
|
LINE0_UVADDR = 1;
|
||
|
|
LINE1_UVADDR = (1 * 400) + 1;
|
||
|
|
LINE2_UVADDR = (2 * 400) + 1;
|
||
|
|
LINE3_UVADDR = (3 * 400) + 1;
|
||
|
|
|
||
|
|
START_X = 0;
|
||
|
|
START_Y = 0;
|
||
|
|
DELTA_X = 0x200; /* no scaling */
|
||
|
|
DELTA_Y = 0x200; /* no scaling */
|
||
|
|
#endif
|
||
|
|
LCDC_INTR_MASK = INTR_MASK_LINE; /* INTR_MASK_EVENLINE; */
|
||
|
|
}
|
||
|
|
|
||
|
|
/* configure pins to drive lcd in 18bit mode */
|
||
|
|
static void iomux_lcd(void)
|
||
|
|
{
|
||
|
|
unsigned long muxa;
|
||
|
|
|
||
|
|
muxa = SCU_IOMUXA_CON & ~(IOMUX_LCD_VSYNC|IOMUX_LCD_DEN|0xff);
|
||
|
|
muxa |= IOMUX_LCD_D18|IOMUX_LCD_D20|IOMUX_LCD_D22|IOMUX_LCD_D17|IOMUX_LCD_D16;
|
||
|
|
|
||
|
|
SCU_IOMUXA_CON = muxa;
|
||
|
|
SCU_IOMUXB_CON |= IOMUX_LCD_D815;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* not tested */
|
||
|
|
static void lcd_sleep(unsigned int sleep)
|
||
|
|
{
|
||
|
|
if (sleep)
|
||
|
|
{
|
||
|
|
/* enter sleep mode */
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0170);
|
||
|
|
delay_nop(50);
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0000);
|
||
|
|
delay_nop(50);
|
||
|
|
lcd_write_reg(PWR_CTRL1, 0x14B4);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* return to normal operation */
|
||
|
|
lcd_write_reg(PWR_CTRL1, 0x14B0);
|
||
|
|
delay_nop(50);
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0173);
|
||
|
|
}
|
||
|
|
|
||
|
|
lcd_cmd(GRAM_WRITE);
|
||
|
|
}
|
||
|
|
|
||
|
|
void lcd_init_device()
|
||
|
|
{
|
||
|
|
unsigned int x, y;
|
||
|
|
|
||
|
|
iomux_lcd(); /* setup pins for 18bit lcd interface */
|
||
|
|
lcdctrl_init(); /* basic lcdc module configuration */
|
||
|
|
|
||
|
|
lcdctrl_bypass(1); /* run in bypass mode - all writes goes directly to lcd controller */
|
||
|
|
|
||
|
|
lcd_write_reg(RESET, 0x0001);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(RESET, 0x0000);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(IF_ENDIAN, 0x0000); /* order of receiving data */
|
||
|
|
lcd_write_reg(DRIVER_OUT_CTRL, 0x0000);
|
||
|
|
lcd_write_reg(ENTRY_MODE, 0x1038);
|
||
|
|
lcd_write_reg(WAVEFORM_CTRL, 0x0100);
|
||
|
|
lcd_write_reg(SHAPENING_CTRL, 0x0000);
|
||
|
|
lcd_write_reg(DISPLAY_CTRL2, 0x0808);
|
||
|
|
lcd_write_reg(LOW_PWR_CTRL1, 0x0001);
|
||
|
|
lcd_write_reg(LOW_PWR_CTRL2, 0x0010);
|
||
|
|
lcd_write_reg(EXT_DISP_CTRL1, 0x0000);
|
||
|
|
lcd_write_reg(EXT_DISP_CTRL2, 0x0000);
|
||
|
|
lcd_write_reg(BASE_IMG_SIZE, 0x3100);
|
||
|
|
lcd_write_reg(BASE_IMG_CTRL, 0x0001);
|
||
|
|
lcd_write_reg(VSCROLL_CTRL, 0x0000);
|
||
|
|
lcd_write_reg(PART1_POS, 0x0000);
|
||
|
|
lcd_write_reg(PART1_START, 0x0000);
|
||
|
|
lcd_write_reg(PART1_END, 0x018F);
|
||
|
|
lcd_write_reg(PART2_POS, 0x0000);
|
||
|
|
lcd_write_reg(PART2_START, 0x0000);
|
||
|
|
lcd_write_reg(PART2_END, 0x0000);
|
||
|
|
|
||
|
|
lcd_write_reg(PANEL_IF_CTRL1, 0x0011);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(PANEL_IF_CTRL2, 0x0202);
|
||
|
|
lcd_write_reg(PANEL_IF_CTRL3, 0x0300);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(PANEL_IF_CTRL4, 0x021E);
|
||
|
|
lcd_write_reg(PANEL_IF_CTRL5, 0x0202);
|
||
|
|
lcd_write_reg(PANEL_IF_CTRL6, 0x0100);
|
||
|
|
lcd_write_reg(FRAME_MKR_CTRL, 0x0000);
|
||
|
|
lcd_write_reg(MDDI_CTRL, 0x0000);
|
||
|
|
|
||
|
|
lcd_write_reg(GAMMA_CTRL1, 0x0101);
|
||
|
|
lcd_write_reg(GAMMA_CTRL2, 0x0000);
|
||
|
|
lcd_write_reg(GAMMA_CTRL3, 0x0016);
|
||
|
|
lcd_write_reg(GAMMA_CTRL4, 0x2913);
|
||
|
|
lcd_write_reg(GAMMA_CTRL5, 0x260B);
|
||
|
|
lcd_write_reg(GAMMA_CTRL6, 0x0101);
|
||
|
|
lcd_write_reg(GAMMA_CTRL7, 0x1204);
|
||
|
|
lcd_write_reg(GAMMA_CTRL8, 0x0415);
|
||
|
|
lcd_write_reg(GAMMA_CTRL9, 0x0205);
|
||
|
|
lcd_write_reg(GAMMA_CTRL10, 0x0303);
|
||
|
|
lcd_write_reg(GAMMA_CTRL11, 0x0E05);
|
||
|
|
lcd_write_reg(GAMMA_CTRL12, 0x0D01);
|
||
|
|
lcd_write_reg(GAMMA_CTRL13, 0x010D);
|
||
|
|
lcd_write_reg(GAMMA_CTRL14, 0x050E);
|
||
|
|
lcd_write_reg(GAMMA_CTRL15, 0x0303);
|
||
|
|
lcd_write_reg(GAMMA_CTRL16, 0x0502);
|
||
|
|
|
||
|
|
/* power on */
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0001);
|
||
|
|
lcd_write_reg(PWR_CTRL6, 0x0001);
|
||
|
|
lcd_write_reg(PWR_CTRL7, 0x0060);
|
||
|
|
delay_nop(50000);
|
||
|
|
lcd_write_reg(PWR_CTRL1, 0x16B0);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(PWR_CTRL2, 0x0147);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(PWR_CTRL3, 0x0117);
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(PWR_CTRL4, 0x2F00);
|
||
|
|
delay_nop(50000);
|
||
|
|
lcd_write_reg(VCOM_HV2, 0x0000); /* src 0x0090 */
|
||
|
|
delay_nop(10000);
|
||
|
|
lcd_write_reg(VCOM_HV1, 0x0008); /* src 0x000A */
|
||
|
|
lcd_write_reg(PWR_CTRL3, 0x01BE);
|
||
|
|
delay_nop(10000);
|
||
|
|
|
||
|
|
/* addresses setup */
|
||
|
|
lcd_write_reg(WINDOW_H_START, 0x0000);
|
||
|
|
lcd_write_reg(WINDOW_H_END, 0x00EF); /* 239 */
|
||
|
|
lcd_write_reg(WINDOW_V_START, 0x0000);
|
||
|
|
lcd_write_reg(WINDOW_V_END, 0x018F); /* 399 */
|
||
|
|
lcd_write_reg(GRAM_H_ADDR, 0x0000);
|
||
|
|
lcd_write_reg(GRAM_V_ADDR, 0x0000);
|
||
|
|
|
||
|
|
/* display on */
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0021);
|
||
|
|
delay_nop(40000);
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0061);
|
||
|
|
delay_nop(100000);
|
||
|
|
lcd_write_reg(DISPLAY_CTRL1, 0x0173);
|
||
|
|
delay_nop(300000);
|
||
|
|
|
||
|
|
|
||
|
|
/* clear screen */
|
||
|
|
lcd_cmd(GRAM_WRITE);
|
||
|
|
|
||
|
|
for (x=0; x<400; x++)
|
||
|
|
for(y=0; y<240; y++)
|
||
|
|
lcd_data(0x000000);
|
||
|
|
|
||
|
|
lcd_sleep(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* This is ugly hack. We drive lcd in bypass mode
|
||
|
|
* where all writes goes directly to lcd controller.
|
||
|
|
* This is suboptimal at best. IF module povides
|
||
|
|
* FIFO, internal sram buffer, hardware scaller,
|
||
|
|
* DMA signals, hardware alpha blending and more.
|
||
|
|
* BUT the fact is that I have no idea how to use
|
||
|
|
* this modes. Datasheet floating around is very
|
||
|
|
* unclean in this regard and OF uses ackward
|
||
|
|
* lcd update routines which are hard to understand.
|
||
|
|
* Moreover OF sets some bits in IF module registers
|
||
|
|
* which are referred as reseved in datasheet.
|
||
|
|
*/
|
||
|
|
void lcd_update()
|
||
|
|
{
|
||
|
|
unsigned int x,y;
|
||
|
|
|
||
|
|
for (y=0; y<240; y++)
|
||
|
|
for (x=0; x<400; x++)
|
||
|
|
LCD_DATA = lcd_pixel_transform(lcd_framebuffer[y][x]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* not implemented yet */
|
||
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
||
|
|
{
|
||
|
|
(void)x;
|
||
|
|
(void)y;
|
||
|
|
(void)width;
|
||
|
|
(void)height;
|
||
|
|
lcd_update();
|
||
|
|
}
|