06bc627c99
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8995 a1c6a512-1295-4272-9138-f99709370657
469 lines
12 KiB
C
469 lines
12 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Rockbox driver for iPod LCDs
|
|
*
|
|
* Based on code from the ipodlinux project - http://ipodlinux.org/
|
|
* Adapted for Rockbox in November 2005
|
|
*
|
|
* Original file: linux/arch/armnommu/mach-ipod/fb.c
|
|
*
|
|
* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
|
|
*
|
|
* All files in this archive are subject to the GNU General Public License.
|
|
* See the file COPYING in the source tree root for full license agreement.
|
|
*
|
|
* 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"
|
|
|
|
|
|
/* check if number of useconds has past */
|
|
static int timer_check(int clock_start, int usecs)
|
|
{
|
|
if ( ((int)(USEC_TIMER - clock_start)) >= usecs ) {
|
|
return 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
#if (CONFIG_LCD == LCD_IPOD2BPP)
|
|
|
|
/*** hardware configuration ***/
|
|
|
|
#if CONFIG_CPU == PP5002
|
|
#define IPOD_LCD_BASE 0xc0001000
|
|
#define IPOD_LCD_BUSY_MASK 0x80000000
|
|
#else /* PP5020 */
|
|
#define IPOD_LCD_BASE 0x70003000
|
|
#define IPOD_LCD_BUSY_MASK 0x00008000
|
|
#endif
|
|
|
|
/* LCD command codes for HD66789R */
|
|
|
|
#define LCD_CMD 0x08
|
|
#define LCD_DATA 0x10
|
|
|
|
static unsigned int lcd_contrast = 0x6a;
|
|
|
|
|
|
/* wait for LCD with timeout */
|
|
static void lcd_wait_write(void)
|
|
{
|
|
int start = USEC_TIMER;
|
|
|
|
do {
|
|
if ((inl(IPOD_LCD_BASE) & 0x8000) == 0) break;
|
|
} while (timer_check(start, 1000) == 0);
|
|
}
|
|
|
|
|
|
/* send LCD data */
|
|
static void lcd_send_data(int data_lo, int data_hi)
|
|
{
|
|
lcd_wait_write();
|
|
outl(data_lo, IPOD_LCD_BASE + LCD_DATA);
|
|
lcd_wait_write();
|
|
outl(data_hi, IPOD_LCD_BASE + LCD_DATA);
|
|
}
|
|
|
|
/* send LCD command */
|
|
static void lcd_prepare_cmd(int cmd)
|
|
{
|
|
lcd_wait_write();
|
|
|
|
outl(0x0, IPOD_LCD_BASE + LCD_CMD);
|
|
lcd_wait_write();
|
|
outl(cmd, IPOD_LCD_BASE + LCD_CMD);
|
|
|
|
}
|
|
|
|
/* send LCD command and data */
|
|
static void lcd_cmd_and_data(int cmd, int data_lo, int data_hi)
|
|
{
|
|
lcd_prepare_cmd(cmd);
|
|
|
|
lcd_send_data(data_lo, data_hi);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* LCD init
|
|
**/
|
|
void lcd_init_device(void){
|
|
#ifdef APPLE_IPODMINI
|
|
lcd_cmd_and_data(0x1, 0x0, 0xd);
|
|
#else
|
|
/* driver output control - 160x128 */
|
|
lcd_cmd_and_data(0x1, 0x1, 0xf);
|
|
#endif
|
|
|
|
lcd_cmd_and_data(0x5, 0x0, 0x10);
|
|
|
|
#ifdef APPLE_IPOD4G
|
|
outl(inl(0x6000d004) | 0x4, 0x6000d004); /* B02 enable */
|
|
outl(inl(0x6000d004) | 0x8, 0x6000d004); /* B03 enable */
|
|
outl(inl(0x70000084) | 0x2000000, 0x70000084); /* D01 enable */
|
|
outl(inl(0x70000080) | 0x2000000, 0x70000080); /* D01 =1 */
|
|
|
|
outl(inl(0x6000600c) | 0x20000, 0x6000600c); /* PWM enable */
|
|
#endif
|
|
}
|
|
|
|
/*** update functions ***/
|
|
/* srccopy bitblt, opcode is currently ignored*/
|
|
|
|
/* Performance function that works with an external buffer
|
|
note that x and bwidtht are in 8-pixel units! */
|
|
void lcd_blit(const unsigned char* data, int x, int by, int width,
|
|
int bheight, int stride)
|
|
{
|
|
/* TODO implement this on iPod */
|
|
(void)data;
|
|
(void)x;
|
|
(void)by;
|
|
(void)width;
|
|
(void)bheight;
|
|
(void)stride;
|
|
}
|
|
|
|
/*** hardware configuration ***/
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* Rockbox stores the contrast as 0..63 - we add 64 to it */
|
|
void lcd_set_contrast(int val)
|
|
{
|
|
if (val < 0) val = 0;
|
|
else if (val > 63) val = 63;
|
|
|
|
lcd_cmd_and_data(0x4, 0x4, val + 64);
|
|
lcd_contrast = val;
|
|
}
|
|
|
|
void lcd_set_invert_display(bool yesno)
|
|
{
|
|
/* TODO: Implement lcd_set_invert_display() */
|
|
(void)yesno;
|
|
}
|
|
|
|
/* turn the display upside down (call lcd_update() afterwards) */
|
|
void lcd_set_flip(bool yesno)
|
|
{
|
|
/* TODO: Implement lcd_set_flip() */
|
|
(void)yesno;
|
|
}
|
|
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
|
{
|
|
int cursor_pos, xx;
|
|
int ny;
|
|
int sx = x, sy = y, mx = width, my = height;
|
|
|
|
/* only update the ipod if we are writing to the screen */
|
|
|
|
sx >>= 3;
|
|
//mx = (mx+7)>>3;
|
|
mx >>= 3;
|
|
|
|
cursor_pos = sx + (sy << 5);
|
|
|
|
for ( ny = sy; ny <= my; ny++ ) {
|
|
unsigned char * img_data;
|
|
|
|
|
|
// move the cursor
|
|
lcd_cmd_and_data(0x11, cursor_pos >> 8, cursor_pos & 0xff);
|
|
|
|
// setup for printing
|
|
lcd_prepare_cmd(0x12);
|
|
|
|
img_data = &lcd_framebuffer[ny][sx<<1];
|
|
|
|
// 160/8 -> 20 == loops 20 times
|
|
// make sure we loop at least once
|
|
for ( xx = sx; xx <= mx; xx++ ) {
|
|
// display a character
|
|
lcd_send_data(*(img_data+1), *img_data);
|
|
|
|
img_data += 2;
|
|
}
|
|
|
|
// update cursor pos counter
|
|
cursor_pos += 0x20;
|
|
}
|
|
}
|
|
|
|
/** Switch on or off the backlight **/
|
|
void lcd_enable (bool on){
|
|
int lcd_state;
|
|
|
|
lcd_state = inl(IPOD_LCD_BASE);
|
|
if (on){
|
|
lcd_state = lcd_state | 0x2;
|
|
outl(lcd_state, IPOD_LCD_BASE);
|
|
lcd_cmd_and_data(0x7, 0x0, 0x11);
|
|
}
|
|
else {
|
|
lcd_state = lcd_state & ~0x2;
|
|
outl(lcd_state, IPOD_LCD_BASE);
|
|
lcd_cmd_and_data(0x7, 0x0, 0x9);
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
#define IPOD_LCD_BASE 0x70008a0c
|
|
#define IPOD_LCD_BUSY_MASK 0x80000000
|
|
|
|
/* LCD command codes for HD66789R */
|
|
#define LCD_CNTL_RAM_ADDR_SET 0x21
|
|
#define LCD_CNTL_WRITE_TO_GRAM 0x22
|
|
#define LCD_CNTL_HORIZ_RAM_ADDR_POS 0x44
|
|
#define LCD_CNTL_VERT_RAM_ADDR_POS 0x45
|
|
|
|
/*** globals ***/
|
|
static int lcd_type = 1; /* 0 = "old" Color/Photo, 1 = "new" Color & Nano */
|
|
|
|
static void lcd_wait_write(void)
|
|
{
|
|
if ((inl(IPOD_LCD_BASE) & IPOD_LCD_BUSY_MASK) != 0) {
|
|
int start = USEC_TIMER;
|
|
|
|
do {
|
|
if ((inl(IPOD_LCD_BASE) & IPOD_LCD_BUSY_MASK) == 0) break;
|
|
} while (timer_check(start, 1000) == 0);
|
|
}
|
|
}
|
|
|
|
static void lcd_send_lo(int v)
|
|
{
|
|
lcd_wait_write();
|
|
outl(v | 0x80000000, IPOD_LCD_BASE);
|
|
}
|
|
|
|
static void lcd_send_hi(int v)
|
|
{
|
|
lcd_wait_write();
|
|
outl(v | 0x81000000, IPOD_LCD_BASE);
|
|
}
|
|
|
|
static void lcd_cmd_data(int cmd, int data)
|
|
{
|
|
if (lcd_type == 0) {
|
|
lcd_send_lo(cmd);
|
|
lcd_send_lo(data);
|
|
} else {
|
|
lcd_send_lo(0x0);
|
|
lcd_send_lo(cmd);
|
|
lcd_send_hi((data >> 8) & 0xff);
|
|
lcd_send_hi(data & 0xff);
|
|
}
|
|
}
|
|
|
|
/*** hardware configuration ***/
|
|
|
|
void lcd_set_contrast(int val)
|
|
{
|
|
/* TODO: Implement lcd_set_contrast() */
|
|
(void)val;
|
|
}
|
|
|
|
void lcd_set_invert_display(bool yesno)
|
|
{
|
|
/* TODO: Implement lcd_set_invert_display() */
|
|
(void)yesno;
|
|
}
|
|
|
|
/* turn the display upside down (call lcd_update() afterwards) */
|
|
void lcd_set_flip(bool yesno)
|
|
{
|
|
/* TODO: Implement lcd_set_flip() */
|
|
(void)yesno;
|
|
}
|
|
|
|
/* LCD init */
|
|
void lcd_init_device(void)
|
|
{
|
|
#if CONFIG_LCD == LCD_IPODCOLOR
|
|
if (ipod_hw_rev == 0x60000) {
|
|
lcd_type = 0;
|
|
} else {
|
|
int gpio_a01, gpio_a04;
|
|
|
|
/* A01 */
|
|
gpio_a01 = (inl(0x6000D030) & 0x2) >> 1;
|
|
/* A04 */
|
|
gpio_a04 = (inl(0x6000D030) & 0x10) >> 4;
|
|
|
|
if (((gpio_a01 << 1) | gpio_a04) == 0 || ((gpio_a01 << 1) | gpio_a04) == 2) {
|
|
lcd_type = 0;
|
|
} else {
|
|
lcd_type = 1;
|
|
}
|
|
}
|
|
|
|
outl(inl(0x6000d004) | 0x4, 0x6000d004); /* B02 enable */
|
|
outl(inl(0x6000d004) | 0x8, 0x6000d004); /* B03 enable */
|
|
outl(inl(0x70000084) | 0x2000000, 0x70000084); /* D01 enable */
|
|
outl(inl(0x70000080) | 0x2000000, 0x70000080); /* D01 =1 */
|
|
|
|
outl(inl(0x6000600c) | 0x20000, 0x6000600c); /* PWM enable */
|
|
|
|
#elif CONFIG_LCD == LCD_IPODNANO
|
|
/* iPodLinux doesn't appear have any LCD init code for the Nano */
|
|
#endif
|
|
}
|
|
|
|
/*** update functions ***/
|
|
|
|
/* Performance function that works with an external buffer
|
|
note that by and bheight are in 4-pixel units! */
|
|
void lcd_blit(const fb_data* data, int x, int by, int width,
|
|
int bheight, int stride)
|
|
{
|
|
/* TODO: Implement lcd_blit() */
|
|
(void)data;
|
|
(void)x;
|
|
(void)by;
|
|
(void)width;
|
|
(void)bheight;
|
|
(void)stride;
|
|
}
|
|
|
|
/* Update a fraction of the display. */
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
|
{
|
|
int y0, x0, y1, x1;
|
|
int newx,newwidth;
|
|
|
|
unsigned long *addr = (unsigned long *)lcd_framebuffer;
|
|
|
|
/* Ensure x and width are both even - so we can read 32-bit aligned
|
|
data from lcd_framebuffer */
|
|
newx=x&~1;
|
|
newwidth=width&~1;
|
|
if (newx+newwidth < x+width) { newwidth+=2; }
|
|
x=newx; width=newwidth;
|
|
|
|
/* calculate the drawing region */
|
|
#if CONFIG_LCD == LCD_IPODNANO
|
|
y0 = x; /* start horiz */
|
|
x0 = y; /* start vert */
|
|
y1 = (x + width) - 1; /* max horiz */
|
|
x1 = (y + height) - 1; /* max vert */
|
|
#elif CONFIG_LCD == LCD_IPODCOLOR
|
|
y0 = y; /* start vert */
|
|
x0 = (LCD_WIDTH - 1) - x; /* start horiz */
|
|
y1 = (y + height) - 1; /* end vert */
|
|
x1 = (x0 - width) + 1; /* end horiz */
|
|
#endif
|
|
/* setup the drawing region */
|
|
if (lcd_type == 0) {
|
|
lcd_cmd_data(0x12, y0); /* start vert */
|
|
lcd_cmd_data(0x13, x0); /* start horiz */
|
|
lcd_cmd_data(0x15, y1); /* end vert */
|
|
lcd_cmd_data(0x16, x1); /* end horiz */
|
|
} else {
|
|
/* swap max horiz < start horiz */
|
|
if (y1 < y0) {
|
|
int t;
|
|
t = y0;
|
|
y0 = y1;
|
|
y1 = t;
|
|
}
|
|
|
|
/* swap max vert < start vert */
|
|
if (x1 < x0) {
|
|
int t;
|
|
t = x0;
|
|
x0 = x1;
|
|
x1 = t;
|
|
}
|
|
|
|
/* max horiz << 8 | start horiz */
|
|
lcd_cmd_data(LCD_CNTL_HORIZ_RAM_ADDR_POS, (y1 << 8) | y0);
|
|
/* max vert << 8 | start vert */
|
|
lcd_cmd_data(LCD_CNTL_VERT_RAM_ADDR_POS, (x1 << 8) | x0);
|
|
|
|
/* start vert = max vert */
|
|
#if CONFIG_LCD == LCD_IPODCOLOR
|
|
x0 = x1;
|
|
#endif
|
|
|
|
/* position cursor (set AD0-AD15) */
|
|
/* start vert << 8 | start horiz */
|
|
lcd_cmd_data(LCD_CNTL_RAM_ADDR_SET, ((x0 << 8) | y0));
|
|
|
|
/* start drawing */
|
|
lcd_send_lo(0x0);
|
|
lcd_send_lo(LCD_CNTL_WRITE_TO_GRAM);
|
|
}
|
|
|
|
addr = (unsigned long*)&lcd_framebuffer[y][x];
|
|
|
|
while (height > 0) {
|
|
int c, r;
|
|
int h, pixels_to_write;
|
|
|
|
pixels_to_write = (width * height) * 2;
|
|
h = height;
|
|
|
|
/* calculate how much we can do in one go */
|
|
if (pixels_to_write > 64000) {
|
|
h = (64000/2) / width;
|
|
pixels_to_write = (width * h) * 2;
|
|
}
|
|
|
|
outl(0x10000080, 0x70008a20);
|
|
outl((pixels_to_write - 1) | 0xc0010000, 0x70008a24);
|
|
outl(0x34000000, 0x70008a20);
|
|
|
|
/* for each row */
|
|
for (r = 0; r < h; r++) {
|
|
/* for each column */
|
|
for (c = 0; c < width; c += 2) {
|
|
while ((inl(0x70008a20) & 0x1000000) == 0);
|
|
|
|
/* output 2 pixels */
|
|
outl(*(addr++), 0x70008b00);
|
|
}
|
|
|
|
addr += (LCD_WIDTH - width)/2;
|
|
}
|
|
|
|
while ((inl(0x70008a20) & 0x4000000) == 0);
|
|
|
|
outl(0x0, 0x70008a24);
|
|
|
|
height = height - h;
|
|
}
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
#endif
|