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rockbox/firmware/target/coldfire/iriver/h300/lcd-h300.c
Daniel Stenberg 2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
2008-06-28 18:10:04 +00:00

425 lines
13 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2004 by Linus Nielsen Feltzing
*
* 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 "thread.h"
#include <string.h>
#include <stdlib.h>
#include "file.h"
#include "debug.h"
#include "system.h"
#include "font.h"
#include "bidi.h"
static bool display_on = false; /* is the display turned on? */
static bool display_flipped = false;
static int xoffset = 0; /* needed for flip */
/* register defines */
#define R_START_OSC 0x00
#define R_DRV_OUTPUT_CONTROL 0x01
#define R_DRV_WAVEFORM_CONTROL 0x02
#define R_ENTRY_MODE 0x03
#define R_COMPARE_REG1 0x04
#define R_COMPARE_REG2 0x05
#define R_DISP_CONTROL1 0x07
#define R_DISP_CONTROL2 0x08
#define R_DISP_CONTROL3 0x09
#define R_FRAME_CYCLE_CONTROL 0x0b
#define R_EXT_DISP_IF_CONTROL 0x0c
#define R_POWER_CONTROL1 0x10
#define R_POWER_CONTROL2 0x11
#define R_POWER_CONTROL3 0x12
#define R_POWER_CONTROL4 0x13
#define R_RAM_ADDR_SET 0x21
#define R_WRITE_DATA_2_GRAM 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_AMP_ADJ_RES_POS 0x38
#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
#define R_GATE_SCAN_POS 0x40
#define R_VERT_SCROLL_CONTROL 0x41
#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 LCD_CMD (*(volatile unsigned short *)0xf0000000)
#define LCD_DATA (*(volatile unsigned short *)0xf0000002)
#define R_ENTRY_MODE_HORZ 0x7030
#define R_ENTRY_MODE_VERT 0x7038
/* called very frequently - inline! */
static inline void lcd_write_reg(int reg, int val)
{
LCD_CMD = reg;
LCD_DATA = val;
}
/* called very frequently - inline! */
static inline void lcd_begin_write_gram(void)
{
LCD_CMD = R_WRITE_DATA_2_GRAM;
}
/*** hardware configuration ***/
void lcd_set_contrast(int val)
{
(void)val;
}
void lcd_set_invert_display(bool yesno)
{
(void)yesno;
}
static void flip_lcd(bool yesno)
{
if (yesno)
{
lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x031b); /* 224 lines, GS=SS=1 */
lcd_write_reg(R_GATE_SCAN_POS, 0x0002); /* 16 lines offset */
lcd_write_reg(R_1ST_SCR_DRV_POS, 0xdf04); /* 4..223 */
}
else
{
lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x001b); /* 224 lines, GS=SS=0 */
lcd_write_reg(R_GATE_SCAN_POS, 0x0000);
lcd_write_reg(R_1ST_SCR_DRV_POS, 0xdb00); /* 0..219 */
}
}
/* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno)
{
display_flipped = yesno;
xoffset = yesno ? 4 : 0;
if (display_on)
flip_lcd(yesno);
}
static void _display_on(void)
{
/** Sequence according to datasheet, p. 132 **/
lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscilation */
sleep(1);
/* zero everything*/
lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* STB = 0, SLP = 0 */
lcd_write_reg(R_DISP_CONTROL1, 0x0000); /* GON = 0, DTE = 0, D1-0 = 00b */
lcd_write_reg(R_POWER_CONTROL3, 0x0000); /* PON = 0 */
lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */
sleep(1);
/* initialise power supply */
/* DC12-10 = 000b: Step-up1 = clock/8,
* DC02-00 = 000b: Step-up2 = clock/16,
* VC2-0 = 010b: VciOUT = 0.87 * VciLVL */
lcd_write_reg(R_POWER_CONTROL2, 0x0002);
/* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */
lcd_write_reg(R_POWER_CONTROL3, 0x0008);
/* VDV4-0 = 00110b: VcomA = Vreg1OUT * 0.76,
* VCM4-0 = 10000b: VcomH = Vreg1OUT * 0.70*/
lcd_write_reg(R_POWER_CONTROL4, 0x0610);
lcd_write_reg(R_POWER_CONTROL1, 0x0044); /* AP2-0 = 100b, DK = 1 */
lcd_write_reg(R_POWER_CONTROL3, 0x0018); /* PON = 1 */
sleep(4); /* Step-up circuit stabilising time */
/* start power supply */
lcd_write_reg(R_POWER_CONTROL1, 0x0540); /* BT2-0 = 101b, DK = 0 */
lcd_write_reg(R_POWER_CONTROL4, 0x2610); /* VCOMG = 1 */
/* other settings */
/* B/C = 1: n-line inversion form
* EOR = 1: polarity inversion occurs by applying an EOR to odd/even
* frame select signal and an n-line inversion signal.
* FLD = 01b: 1 field interlaced scan, external display iface */
lcd_write_reg(R_DRV_WAVEFORM_CONTROL, 0x0700);
/* Address counter updated in vertical direction; left to right;
* vertical increment horizontal increment.
* data format for 8bit transfer or spi = 65k (5,6,5)
* Reverse order of RGB to BGR for 18bit data written to GRAM
* Replace data on writing to GRAM */
lcd_write_reg(R_ENTRY_MODE, 0x7038);
flip_lcd(display_flipped);
lcd_write_reg(R_2ND_SCR_DRV_POS, 0x0000);
lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000);
/* 19 clocks,no equalization */
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0002);
/* Transfer mode for RGB interface disabled
* internal clock operation;
* System interface/VSYNC interface */
lcd_write_reg(R_EXT_DISP_IF_CONTROL, 0x0003);
/* Front porch lines: 8; Back porch lines: 8; */
lcd_write_reg(R_DISP_CONTROL2, 0x0808);
/* Scan mode by the gate driver in the non-display area: disabled;
* Cycle of scan by the gate driver - set to 31frames(518ms),
* disabled by above setting */
lcd_write_reg(R_DISP_CONTROL3, 0x003f);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0003);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0707);
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0007);
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0705);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0007);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0000);
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0407);
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0507);
lcd_write_reg(R_GAMMA_AMP_ADJ_RES_POS, 0x1d09);
lcd_write_reg(R_GAMMA_AMP_AVG_ADJ_RES_NEG, 0x0303);
display_on=true; /* must be done before calling lcd_update() */
lcd_update();
sleep(4); /* op-amp stabilising time */
/** Sequence according to datasheet, p. 130 **/
lcd_write_reg(R_POWER_CONTROL1, 0x4540); /* SAP2-0=100, BT2-0=101, AP2-0=100 */
lcd_write_reg(R_DISP_CONTROL1, 0x0005); /* GON=0, DTE=0, REV=1, D1-0=01 */
sleep(2);
lcd_write_reg(R_DISP_CONTROL1, 0x0025); /* GON=1, DTE=0, REV=1, D1-0=01 */
lcd_write_reg(R_DISP_CONTROL1, 0x0027); /* GON=1, DTE=0, REV=1, D1-0=11 */
sleep(2);
lcd_write_reg(R_DISP_CONTROL1, 0x0037); /* GON=1, DTE=1, REV=1, D1-0=11 */
}
/* LCD init */
void lcd_init_device(void)
{
/* GPO46 is LCD RESET */
or_l(0x00004000, &GPIO1_OUT);
or_l(0x00004000, &GPIO1_ENABLE);
or_l(0x00004000, &GPIO1_FUNCTION);
/* Reset LCD */
and_l(~0x00004000, &GPIO1_OUT);
sleep(1);
or_l(0x00004000, &GPIO1_OUT);
sleep(1);
_display_on();
}
void lcd_enable(bool on)
{
if(display_on!=on)
{
if(on)
{
_display_on();
lcd_call_enable_hook();
}
else
{
/** Off sequence according to datasheet, p. 130 **/
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0002); /* EQ=0, 18 clks/line */
lcd_write_reg(R_DISP_CONTROL1, 0x0036); /* GON=1, DTE=1, REV=1, D1-0=10 */
sleep(2);
lcd_write_reg(R_DISP_CONTROL1, 0x0026); /* GON=1, DTE=0, REV=1, D1-0=10 */
sleep(2);
lcd_write_reg(R_DISP_CONTROL1, 0x0000); /* GON=0, DTE=0, D1-0=00 */
lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* SAP2-0=000, AP2-0=000 */
lcd_write_reg(R_POWER_CONTROL3, 0x0000); /* PON=0 */
lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG=0 */
/* datasheet p. 131 */
lcd_write_reg(R_POWER_CONTROL1, 0x0001); /* STB=1: standby mode */
display_on=false;
}
}
}
bool lcd_enabled(void)
{
return display_on;
}
/*** update functions ***/
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420.
* y should have two lines of Y back to back, 2nd line first.
* c should contain the Cb and Cr data for the two lines of Y back to back.
* Needs EMAC set to saturated, signed integer mode.
*/
extern void lcd_write_yuv420_lines(const unsigned char *y,
const unsigned char *c, int cwidth);
/* Performance function to blit a YUV bitmap directly to the LCD
* src_x, src_y, width and height should be even
* x, y, width and height have to be within LCD bounds
*/
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)
{
/* IRAM Y, Cb and Cb buffers. */
unsigned char y_ibuf[LCD_WIDTH*2];
unsigned char c_ibuf[LCD_WIDTH];
const unsigned char *ysrc, *usrc, *vsrc;
const unsigned char *ysrc_max;
if (!display_on)
return;
width &= ~1; /* stay on the safe side */
height &= ~1;
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
/* Set start position and window */
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((xoffset + 219) << 8) | xoffset);
ysrc = src[0] + src_y * stride + src_x;
usrc = src[1] + (src_y * stride >> 2) + (src_x >> 1);
vsrc = src[2] + (src_y * stride >> 2) + (src_x >> 1);
ysrc_max = ysrc + height * stride;
coldfire_set_macsr(EMAC_SATURATE);
do
{
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((y + 1) << 8) | y);
lcd_write_reg(R_RAM_ADDR_SET, ((x+xoffset) << 8) | y);
lcd_begin_write_gram();
memcpy(y_ibuf + width, ysrc, width);
memcpy(y_ibuf, ysrc + stride, width);
memcpy(c_ibuf, usrc, width >> 1);
memcpy(c_ibuf + (width >> 1), vsrc, width >> 1);
lcd_write_yuv420_lines(y_ibuf, c_ibuf, width >> 1);
y += 2;
ysrc += 2 * stride;
usrc += stride >> 1;
vsrc += stride >> 1;
}
while (ysrc < ysrc_max);
}
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_update(void) ICODE_ATTR;
void lcd_update(void)
{
if(display_on){
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VERT);
/* set start position window */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 175 << 8);
lcd_write_reg(R_VERT_RAM_ADDR_POS,((xoffset+219)<<8) | xoffset);
lcd_write_reg(R_RAM_ADDR_SET, xoffset << 8);
lcd_begin_write_gram();
DAR3 = 0xf0000002;
SAR3 = (unsigned long)lcd_framebuffer;
BCR3 = LCD_WIDTH*LCD_HEIGHT*2;
DCR3 = DMA_AA | DMA_BWC(1)
| DMA_SINC | DMA_SSIZE(DMA_SIZE_LINE)
| DMA_DSIZE(DMA_SIZE_WORD) | DMA_START;
while (!(DSR3 & 1));
DSR3 = 1;
}
}
/* Update a fraction of the display. */
void lcd_update_rect(int, int, int, int) ICODE_ATTR;
void lcd_update_rect(int x, int y, int width, int height)
{
unsigned long dma_addr;
if(display_on) {
if(x + width > LCD_WIDTH)
width = LCD_WIDTH - x;
if(width <= 0) /* nothing to do */
return;
if(y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VERT);
/* set update window */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 175 << 8);
lcd_write_reg(R_VERT_RAM_ADDR_POS,((x+xoffset+width-1) << 8) | (x+xoffset));
lcd_write_reg(R_RAM_ADDR_SET, ((x+xoffset) << 8) | y);
lcd_begin_write_gram();
DAR3 = 0xf0000002;
dma_addr = (unsigned long)&lcd_framebuffer[y][x];
width *= 2;
for (; height > 0; height--)
{
SAR3 = dma_addr;
BCR3 = width;
DCR3 = DMA_AA | DMA_BWC(1)
| DMA_SINC | DMA_SSIZE(DMA_SIZE_LINE)
| DMA_DSIZE(DMA_SIZE_WORD) | DMA_START;
dma_addr += LCD_WIDTH*2;
while (!(DSR3 & 1));
DSR3 = 1;
}
}
}
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