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rockbox/firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c
Bertrik Sikken f323300b82 Sansa clipzip: make main build compile (plugins still disabled) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30588 a1c6a512-1295-4272-9138-f99709370657
2011-09-24 11:21:01 +00:00

418 lines
11 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: lcd-clipzip.c 30465 2011-09-06 16:55:52Z bertrik $
*
* Copyright (C) 2011 Bertrik Sikken
*
* 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 "lcd.h"
#include "lcd-target.h"
#include "system.h"
#include "cpu.h"
/* the detected lcd type (0 or 1) */
static int lcd_type;
#ifdef HAVE_LCD_ENABLE
/* whether the lcd is currently enabled or not */
static bool lcd_enabled;
#endif
/* initialises the host lcd hardware, returns the lcd type */
static int lcd_hw_init(void)
{
/* configure SSP */
bitset32(&CGU_PERI, CGU_SSP_CLOCK_ENABLE);
SSP_CPSR = 8; /* TODO: use AS3525_SSP_PRESCALER, OF uses 8 */
SSP_CR0 = (0 << 8) | /* SCR, serial clock rate divider = 1 */
(1 << 7) | /* SPH, phase = 1 */
(1 << 6) | /* SPO, polarity = 1 */
(0 << 4) | /* FRF, frame format = motorola SPI */
(7 << 0); /* DSS, data size select = 8 bits */
SSP_CR1 = (1 << 3) | /* SOD, slave output disable = 1 */
(0 << 2) | /* MS, master/slave = master */
(1 << 1) | /* SSE, synchronous serial port enabled = true */
(0 << 0); /* LBM, loopback mode = normal */
SSP_IMSC &= ~0xF; /* disable interrupts */
SSP_DMACR &= ~0x3; /* disable DMA */
/* configure GPIO B2 (lcd D/C#) as output */
GPIOB_DIR |= (1<<2);
/* configure GPIO B3 (lcd type detect) as input */
GPIOB_DIR &= ~(1<<3);
/* configure GPIO A5 (lcd reset#) as output and perform lcd reset */
GPIOA_DIR |= (1 << 5);
GPIOA_PIN(5) = 0;
sleep(HZ * 50/1000);
GPIOA_PIN(5) = (1 << 5);
/* detect lcd type on GPIO B3 */
return GPIOB_PIN(3) ? 1 : 0;
}
/* writes a command byte to the LCD */
static void lcd_write_cmd(uint8_t byte)
{
/* wait until not busy */
while (SSP_SR & (1<<4));
/* LCD command mode */
GPIOB_PIN(2) = 0;
/* write data */
SSP_DATA = byte;
/* wait until not busy */
while (SSP_SR & (1<<4));
/* LCD data mode */
GPIOB_PIN(2) = (1 << 2);
}
/* writes a data byte to the LCD */
static void lcd_write_dat(uint8_t data)
{
/* wait while transmit FIFO */
while (!(SSP_SR & (1<<1)));
/* write data */
SSP_DATA = data;
}
/* writes both a command and data value to the lcd */
static void lcd_write(uint8_t cmd, uint8_t data)
{
lcd_write_cmd(cmd);
lcd_write_dat(data);
}
/* Initialises lcd type 0
* This appears to be a Visionox M00230 OLED display controlled by a SEPS114A.
*/
static void lcd_init_type0(void)
{
lcd_write(0x01, 0x00); /* SOFT_RESET */
lcd_write(0x14, 0x01); /* STANDBY_ON_OFF */
sleep(1); /* actually only 5 ms needed */
lcd_write(0x14, 0x00); /* STANDBY_ON_OFF */
sleep(1); /* actually only 5 ms needed */
lcd_write(0x0F, 0x41); /* ANALOG_CONTROL */
lcd_write(0xEA, 0x0A); /* ? */
lcd_write(0xEB, 0x42); /* ? */
lcd_write(0x18, 0x08); /* DISCHARGE_TIME */
lcd_write(0x1A, 0x0B); /* OSC_ADJUST */
lcd_write(0x48, 0x03); /* ROW_OVERLAP */
lcd_write(0x30, 0x00); /* DISPLAY_X1 */
lcd_write(0x31, 0x5F); /* DISPLAY_X2 */
lcd_write(0x32, 0x00); /* DISPLAY_Y1 */
lcd_write(0x33, 0x5F); /* DISPLAY_Y2 */
lcd_write(0xE0, 0x10); /* RGB_IF */
lcd_write(0xE1, 0x00); /* RGB_POL */
lcd_write(0xE5, 0x00); /* DISPLAY_MODE_CONTROL */
lcd_write(0x0D, 0x00); /* CPU_IF */
lcd_write(0x1D, 0x01); /* MEMORY_WRITE_READ */
lcd_write(0x09, 0x00); /* ROW_SCAN_DIRECTION */
lcd_write(0x13, 0x00); /* ROW_SCAN_MODE */
lcd_write(0x16, 0x05); /* PEAK_PULSE_DELAY */
lcd_write(0x3A, 0x03); /* PEAK_PULSE_WIDTH_R */
lcd_write(0x3B, 0x03); /* PEAK_PULSE_WIDTH_G */
lcd_write(0x3C, 0x03); /* PEAK_PULSE_WIDTH_B */
lcd_write(0x3D, 0x45); /* PRECHARGE_CURRENT_R */
lcd_write(0x3E, 0x45); /* PRECHARGE_CURRENT_G */
lcd_write(0x3F, 0x45); /* PRECHARGE_CURRENT_B */
lcd_write(0x40, 0x62); /* COLUMN_CURRENT_R */
lcd_write(0x41, 0x3D); /* COLUMN_CURRENT_G */
lcd_write(0x42, 0x46); /* COLUMN_CURRENT_B */
}
/* writes a table entry (for type 1 LCDs) */
static void lcd_write_nibbles(uint8_t val)
{
lcd_write_dat((val >> 4) & 0x0F);
lcd_write_dat((val >> 0) & 0x0F);
}
/* initialises lcd type 1 */
static void lcd_init_type1(void)
{
static const uint8_t curve[256] = {
/* 5-bit curve */
0, 5, 10, 15, 20, 25, 30, 35, 39, 43, 47, 51, 55, 59, 63, 67,
71, 75, 79, 83, 87, 91, 95, 99, 103, 105, 109, 113, 117, 121, 123, 127,
/* 6-bit curve */
0, 2, 4, 6, 8, 10, 12, 16, 18, 24, 26, 28, 30, 32, 34, 36,
38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68,
70, 72, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102,
104, 106, 108, 110, 112, 114, 116, 118, 120, 121, 122, 123, 124, 125, 126, 127,
/* 5-bit curve */
0, 5, 10, 15, 20, 25, 30, 35, 39, 43, 47, 51, 55, 59, 63, 67,
71, 75, 79, 83, 87, 91, 93, 97, 101, 105, 109, 113, 117, 121, 124, 127
};
int i;
lcd_write_cmd(0x02);
lcd_write_dat(0x00);
lcd_write_cmd(0x01);
lcd_write_cmd(0x03);
lcd_write_dat(0x00);
lcd_write_cmd(0x04);
lcd_write_dat(0x03);
lcd_write_cmd(0x05);
lcd_write_dat(0x08);
lcd_write_cmd(0x06);
lcd_write_dat(0x00);
lcd_write_cmd(0x07);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x04);
lcd_write_dat(0x1F);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x05);
lcd_write_dat(0x0F);
lcd_write_cmd(0x08);
lcd_write_dat(0x01);
lcd_write_cmd(0x09);
lcd_write_dat(0x07);
lcd_write_cmd(0x0A);
lcd_write_nibbles(0);
lcd_write_nibbles(LCD_WIDTH - 1);
lcd_write_nibbles(0);
lcd_write_nibbles(LCD_HEIGHT - 1);
lcd_write_cmd(0x0B);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_cmd(0x0E);
lcd_write_nibbles(0x42);
lcd_write_nibbles(0x25);
lcd_write_nibbles(0x3F);
lcd_write_cmd(0x0F);
lcd_write_dat(0x0A);
lcd_write_dat(0x0A);
lcd_write_dat(0x0A);
lcd_write_cmd(0x1C);
lcd_write_dat(0x08);
lcd_write_cmd(0x1D);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_cmd(0x1E);
lcd_write_dat(0x05);
lcd_write_cmd(0x1F);
lcd_write_dat(0x00);
lcd_write_cmd(0x30);
lcd_write_dat(0x10);
lcd_write_cmd(0x3A);
for (i = 0; i < 256; i++) {
lcd_write_nibbles(curve[i]);
}
lcd_write_cmd(0x3C);
lcd_write_dat(0x00);
lcd_write_cmd(0x3D);
lcd_write_dat(0x00);
}
#ifdef HAVE_LCD_ENABLE
/* enables/disables the lcd */
void lcd_enable(bool on)
{
lcd_enabled = on;
if (lcd_type == 0) {
if (on) {
lcd_write(0x14, 0x00); /* STANDBY_ON_OFF */
lcd_write(0x02, 0x01); /* DISP_ON_OFF */
lcd_write(0xD2, 0x04); /* SCREEN_SAVER_MODE */
lcd_write(0xD0, 0x80); /* SCREEN_SAVER_CONTROL */
sleep(HZ * 100/1000);
lcd_write(0xD0, 0x00); /* SCREEN_SAVER_CONTROL */
}
else {
lcd_write(0xD2, 0x05);
lcd_write(0xD0, 0x80);
sleep(HZ * 100/1000);
lcd_write(0x02, 0x00);
lcd_write(0xD0, 0x00);
lcd_write(0x14, 0x01);
}
}
else {
if (on) {
lcd_write_cmd(0x03);
lcd_write_dat(0x00);
lcd_write_cmd(0x02);
lcd_write_dat(0x01);
}
else {
lcd_write_cmd(0x02);
lcd_write_dat(0x00);
lcd_write_cmd(0x03);
lcd_write_dat(0x01);
}
}
}
/* returns true if the lcd is enabled */
bool lcd_active(void)
{
return lcd_enabled;
}
#endif /* HAVE_LCD_ENABLE */
/* initialises the lcd */
void lcd_init_device(void)
{
lcd_type = lcd_hw_init();
if (lcd_type == 0) {
lcd_init_type0();
}
else {
lcd_init_type1();
}
lcd_enable(true);
}
/* sets up the lcd to receive frame buffer data */
static void lcd_setup_rect(int x, int x_end, int y, int y_end)
{
if (lcd_type == 0) {
lcd_write(0x34, x); /* MEM_X1 */
lcd_write(0x35, x_end); /* MEM_X2 */
lcd_write(0x36, y); /* MEM_Y1 */
lcd_write(0x37, y_end); /* MEM_Y2 */
}
else {
lcd_write_cmd(0x0A);
lcd_write_nibbles(x);
lcd_write_nibbles(x_end);
lcd_write_nibbles(y);
lcd_write_nibbles(y_end);
}
}
/* sets the brightness of the OLED */
void lcd_brightness(uint8_t red, uint8_t green, uint8_t blue)
{
if (lcd_type == 0) {
lcd_write(0x40, red); /* COLUMN_CURRENT_R */
lcd_write(0x41, green); /* COLUMN_CURRENT_G */
lcd_write(0x42, blue); /* COLUMN_CURRENT_B */
}
else {
lcd_write_cmd(0x0E);
lcd_write_nibbles(red);
lcd_write_nibbles(green);
lcd_write_nibbles(blue);
}
}
/* Updates a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
fb_data *ptr;
fb_data pixel;
int row, col;
int x_end = x + width;
int y_end = y + height;
/* check rectangle */
if ((x >= LCD_WIDTH) || (x_end <= 0) || (y >= LCD_HEIGHT) || (y_end <= 0)) {
/* rectangle is outside visible display, do nothing */
return;
}
/* correct rectangle (if necessary) */
if (x < 0) {
x = 0;
}
if (x_end > LCD_WIDTH) {
x_end = LCD_WIDTH;
}
if (y < 0) {
y = 0;
}
if (y_end > LCD_HEIGHT) {
y_end = LCD_HEIGHT;
}
/* setup GRAM write window */
lcd_setup_rect(x, x_end - 1, y, y_end - 1);
/* write to GRAM */
lcd_write_cmd((lcd_type == 0) ? 0x08 : 0x0C); /* DDRAM_DATA_ACCESS_PORT */
for (row = y; row < y_end; row++) {
ptr = &lcd_framebuffer[row][x];
for (col = x; col < x_end; col++) {
pixel = *ptr++;
lcd_write_dat((pixel >> 8) & 0xFF);
lcd_write_dat((pixel >> 0) & 0xFF);
}
}
}
/* updates the entire lcd */
void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
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)
{
/* TODO */
(void)src;
(void)src_x;
(void)src_y;
(void)stride;
(void)x;
(void)y;
(void)width;
(void)height;
}
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