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Moved ipod LCD code to target tree.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12479 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2007-02-25 13:11:02 +00:00
parent b7486fb4a9
commit 2906c36df3
4 changed files with 286 additions and 255 deletions
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501
firmware/target/arm/ipod/lcd-color_nano.c Normal file
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/***************************************************************************
* __________ __ ___.
* 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 inline bool timer_check(int clock_start, int usecs)
{
return ((int)(USEC_TIMER - clock_start)) >= usecs;
}
#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;
}
#define CSUB_X 2
#define CSUB_Y 2
#define RYFAC (31*257)
#define GYFAC (31*257)
#define BYFAC (31*257)
#define RVFAC 11170 /* 31 * 257 * 1.402 */
#define GVFAC (-5690) /* 31 * 257 * -0.714136 */
#define GUFAC (-2742) /* 31 * 257 * -0.344136 */
#define BUFAC 14118 /* 31 * 257 * 1.772 */
#define ROUNDOFFS (127*257)
#define ROUNDOFFSG (63*257)
/* Performance function to blit a YUV bitmap directly to the LCD */
void lcd_yuv_blit(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
int h;
int y0, x0, y1, x1;
width = (width + 1) & ~1;
/* 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);
}
const int stride_div_csub_x = stride/CSUB_X;
h=0;
while (1) {
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
const unsigned char *ysrc = src[0] + stride * src_y + src_x;
const int uvoffset = stride_div_csub_x * (src_y/CSUB_Y) +
(src_x/CSUB_X);
const unsigned char *usrc = src[1] + uvoffset;
const unsigned char *vsrc = src[2] + uvoffset;
const unsigned char *row_end = ysrc + width;
int y, u, v;
int red1, green1, blue1;
int red2, green2, blue2;
unsigned rbits, gbits, bbits;
int rc, gc, bc;
int pixels_to_write;
fb_data pixel1,pixel2;
if (h==0) {
while ((inl(0x70008a20) & 0x4000000) == 0);
outl(0x0, 0x70008a24);
if (height == 0) break;
pixels_to_write = (width * height) * 2;
h = height;
/* calculate how much we can do in one go */
if (pixels_to_write > 0x10000) {
h = (0x10000/2) / width;
pixels_to_write = (width * h) * 2;
}
height -= h;
outl(0x10000080, 0x70008a20);
outl((pixels_to_write - 1) | 0xc0010000, 0x70008a24);
outl(0x34000000, 0x70008a20);
}
do
{
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFSG;
bc = BUFAC * u + ROUNDOFFS;
/* Pixel 1 */
y = *ysrc++;
red1 = RYFAC * y + rc;
green1 = GYFAC * y + gc;
blue1 = BYFAC * y + bc;
/* Pixel 2 */
y = *ysrc++;
red2 = RYFAC * y + rc;
green2 = GYFAC * y + gc;
blue2 = BYFAC * y + bc;
/* Since out of bounds errors are relatively rare, we check two
pixels at once to see if any components are out of bounds, and
then fix whichever is broken. This works due to high values and
negative values both becoming larger than the cutoff when
casted to unsigned. And ORing them together checks all of them
simultaneously. */
if (((unsigned)(red1 | green1 | blue1 |
red2 | green2 | blue2)) > (RYFAC*255+ROUNDOFFS)) {
if (((unsigned)(red1 | green1 | blue1)) >
(RYFAC*255+ROUNDOFFS)) {
if ((unsigned)red1 > (RYFAC*255+ROUNDOFFS))
{
if (red1 < 0)
red1 = 0;
else
red1 = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green1 > (GYFAC*255+ROUNDOFFSG))
{
if (green1 < 0)
green1 = 0;
else
green1 = (GYFAC*255+ROUNDOFFSG);
}
if ((unsigned)blue1 > (BYFAC*255+ROUNDOFFS))
{
if (blue1 < 0)
blue1 = 0;
else
blue1 = (BYFAC*255+ROUNDOFFS);
}
}
if (((unsigned)(red2 | green2 | blue2)) >
(RYFAC*255+ROUNDOFFS)) {
if ((unsigned)red2 > (RYFAC*255+ROUNDOFFS))
{
if (red2 < 0)
red2 = 0;
else
red2 = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green2 > (GYFAC*255+ROUNDOFFSG))
{
if (green2 < 0)
green2 = 0;
else
green2 = (GYFAC*255+ROUNDOFFSG);
}
if ((unsigned)blue2 > (BYFAC*255+ROUNDOFFS))
{
if (blue2 < 0)
blue2 = 0;
else
blue2 = (BYFAC*255+ROUNDOFFS);
}
}
}
rbits = red1 >> 16 ;
gbits = green1 >> 15 ;
bbits = blue1 >> 16 ;
pixel1 = swap16((rbits << 11) | (gbits << 5) | bbits);
rbits = red2 >> 16 ;
gbits = green2 >> 15 ;
bbits = blue2 >> 16 ;
pixel2 = swap16((rbits << 11) | (gbits << 5) | bbits);
while ((inl(0x70008a20) & 0x1000000) == 0);
/* output 2 pixels */
outl((pixel2<<16)|pixel1, 0x70008b00);
}
while (ysrc < row_end);
src_y++;
h--;
}
while ((inl(0x70008a20) & 0x4000000) == 0);
outl(0x0, 0x70008a24);
}
/* 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 > 0x10000) {
h = (0x10000/2) / 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);
}

279
firmware/target/arm/ipod/lcd-gray.c Normal file
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/***************************************************************************
* __________ __ ___.
* 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 inline bool timer_check(int clock_start, int usecs)
{
return ((int)(USEC_TIMER - clock_start)) >= usecs;
}
/*** 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 HD66753 */
#define LCD_CMD 0x08
#define LCD_DATA 0x10
#define R_START_OSC 0x00
#define R_DRV_OUTPUT_CONTROL 0x01
#define R_DRV_WAVEFORM_CONTROL 0x02
#define R_POWER_CONTROL 0x03
#define R_CONTRAST_CONTROL 0x04
#define R_ENTRY_MODE 0x05
#define R_ROTATION 0x06
#define R_DISPLAY_CONTROL 0x07
#define R_CURSOR_CONTROL 0x08
#define R_HORIZONTAL_CURSOR_POS 0x0b
#define R_VERTICAL_CURSOR_POS 0x0c
#define R_1ST_SCR_DRV_POS 0x0d
#define R_2ND_SCR_DRV_POS 0x0e
#define R_RAM_WRITE_MASK 0x10
#define R_RAM_ADDR_SET 0x11
#define R_RAM_DATA 0x12
/* needed for flip */
static int addr_offset;
#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
static int pix_offset;
#endif
static const unsigned char dibits[16] ICONST_ATTR = {
0x00, 0x03, 0x0C, 0x0F, 0x30, 0x33, 0x3C, 0x3F,
0xC0, 0xC3, 0xCC, 0xCF, 0xF0, 0xF3, 0xFC, 0xFF
};
/* wait for LCD with timeout */
static inline 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(unsigned data)
{
lcd_wait_write();
#ifdef IPOD_MINI2G
outl((inl(IPOD_LCD_BASE) & ~0x1f00000) | 0x1700000, IPOD_LCD_BASE);
outl(data | 0x760000, IPOD_LCD_BASE+8);
#else
outl(data >> 8, IPOD_LCD_BASE + LCD_DATA);
lcd_wait_write();
outl(data & 0xff, IPOD_LCD_BASE + LCD_DATA);
#endif
}
/* send LCD command */
static void lcd_prepare_cmd(unsigned cmd)
{
lcd_wait_write();
#ifdef IPOD_MINI2G
outl((inl(IPOD_LCD_BASE) & ~0x1f00000) | 0x1700000, IPOD_LCD_BASE);
outl(cmd | 0x740000, IPOD_LCD_BASE+8);
#else
outl(0x0, IPOD_LCD_BASE + LCD_CMD);
lcd_wait_write();
outl(cmd, IPOD_LCD_BASE + LCD_CMD);
#endif
}
/* send LCD command and data */
static void lcd_cmd_and_data(unsigned cmd, unsigned data)
{
lcd_prepare_cmd(cmd);
lcd_send_data(data);
}
/* LCD init */
void lcd_init_device(void)
{
lcd_cmd_and_data(R_DISPLAY_CONTROL, 0x0009);
lcd_set_flip(false);
lcd_cmd_and_data(R_ENTRY_MODE, 0x0000);
#ifdef IPOD_4G
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
}
/*** hardware configuration ***/
int lcd_default_contrast(void)
{
#if defined(IPOD_MINI) || defined(IPOD_MINI2G) || defined(IPOD_3G)
return 42;
#else
return 35;
#endif
}
/* 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(R_CONTRAST_CONTROL, 0x400 | (val + 64));
}
void lcd_set_invert_display(bool yesno)
{
if (yesno)
lcd_cmd_and_data(R_DISPLAY_CONTROL, 0x0023);
else
lcd_cmd_and_data(R_DISPLAY_CONTROL, 0x0009);
}
/* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno)
{
#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
if (yesno) {
/* 168x112, inverse COM order */
lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x020d);
lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x8316); /* 22..131 */
addr_offset = (22 << 5) | (20 - 4);
pix_offset = -2;
} else {
/* 168x112, inverse SEG order */
lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x010d);
lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x6d00); /* 0..109 */
addr_offset = 20;
pix_offset = 0;
}
#else
if (yesno) {
/* 168x128, inverse SEG & COM order */
lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x030f);
lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x8304); /* 4..131 */
addr_offset = (4 << 5) | (20 - 1);
} else {
/* 168x128 */
lcd_cmd_and_data(R_DRV_OUTPUT_CONTROL, 0x000f);
lcd_cmd_and_data(R_1ST_SCR_DRV_POS, 0x7f00); /* 0..127 */
addr_offset = 20;
}
#endif
}
/*** update functions ***/
/* Performance function that works with an external buffer
note that x, bwidtht and stride are in 8-pixel units! */
void lcd_blit(const unsigned char* data, int bx, int y, int bwidth,
int height, int stride)
{
const unsigned char *src, *src_end;
while (height--) {
src = data;
src_end = data + bwidth;
lcd_cmd_and_data(R_RAM_ADDR_SET, (y++ << 5) + addr_offset - bx);
lcd_prepare_cmd(R_RAM_DATA);
do {
unsigned byte = *src++;
lcd_send_data((dibits[byte>>4] << 8) | dibits[byte&0x0f]);
} while (src < src_end);
data += stride;
}
}
void lcd_update_rect(int x, int y, int width, int height)
{
int xmax, ymax;
if (x + width > LCD_WIDTH)
width = LCD_WIDTH - x;
if (width <= 0)
return;
ymax = y + height - 1;
if (ymax >= LCD_HEIGHT)
ymax = LCD_HEIGHT - 1;
#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
x += pix_offset;
#endif
/* writing is done in 16-bit units (8 pixels) */
xmax = (x + width - 1) >> 3;
x >>= 3;
width = xmax - x + 1;
for (; y <= ymax; y++) {
unsigned char *data, *data_end;
lcd_cmd_and_data(R_RAM_ADDR_SET, (y << 5) + addr_offset - x);
lcd_prepare_cmd(R_RAM_DATA);
data = &lcd_framebuffer[y][2*x];
data_end = data + 2 * width;
#if defined(IPOD_MINI) || defined(IPOD_MINI2G)
if (pix_offset == -2) {
unsigned cur_word = *data++;
do {
cur_word = (cur_word << 8) | *data++;
cur_word = (cur_word << 8) | *data++;
lcd_send_data((cur_word >> 4) & 0xffff);
} while (data <= data_end);
} else
#endif
{
do {
unsigned highbyte = *data++;
lcd_send_data((highbyte << 8) | *data++);
} while (data < data_end);
}
}
}
/* Update the display. */
void lcd_update(void)
{
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}

389
firmware/target/arm/ipod/video/lcd-video.c Normal file
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@ -0,0 +1,389 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* LCD driver for iPod Video
*
* Based on code from the ipodlinux project - http://ipodlinux.org/
* Adapted for Rockbox in December 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"
/*** 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)
{
/* iPodLinux doesn't appear have any LCD init code for the Video */
}
/*** 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;
}
static inline void lcd_bcm_write32(unsigned address, unsigned value)
{
/* write out destination address as two 16bit values */
outw(address, 0x30010000);
outw((address >> 16), 0x30010000);
/* wait for it to be write ready */
while ((inw(0x30030000) & 0x2) == 0);
/* write out the value low 16, high 16 */
outw(value, 0x30000000);
outw((value >> 16), 0x30000000);
}
static void lcd_bcm_setup_rect(unsigned cmd,
unsigned start_horiz,
unsigned start_vert,
unsigned max_horiz,
unsigned max_vert,
unsigned count)
{
lcd_bcm_write32(0x1F8, 0xFFFA0005);
lcd_bcm_write32(0xE0000, cmd);
lcd_bcm_write32(0xE0004, start_horiz);
lcd_bcm_write32(0xE0008, start_vert);
lcd_bcm_write32(0xE000C, max_horiz);
lcd_bcm_write32(0xE0010, max_vert);
lcd_bcm_write32(0xE0014, count);
lcd_bcm_write32(0xE0018, count);
lcd_bcm_write32(0xE001C, 0);
}
static unsigned lcd_bcm_read32(unsigned address) {
while ((inw(0x30020000) & 1) == 0);
/* write out destination address as two 16bit values */
outw(address, 0x30020000);
outw((address >> 16), 0x30020000);
/* wait for it to be read ready */
while ((inw(0x30030000) & 0x10) == 0);
/* read the value */
return inw(0x30000000) | inw(0x30000000) << 16;
}
static int finishup_needed = 0;
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height) ICODE_ATTR;
void lcd_update_rect(int x, int y, int width, int height)
{
{
int endy = x + width;
/* Ensure x and width are both even - so we can read 32-bit aligned
data from lcd_framebuffer */
x &= ~1;
width &= ~1;
if (x + width < endy) {
width += 2;
}
}
if (finishup_needed) {
unsigned int data;
/* Bottom-half of original lcd_bcm_finishup() function */
do {
/* This function takes about 14ms to execute - so we yield() */
yield();
data = lcd_bcm_read32(0x1F8);
} while (data == 0xFFFA0005 || data == 0xFFFF);
}
lcd_bcm_read32(0x1FC);
{
int rect1, rect2, rect3, rect4;
int count = (width * height) << 1;
/* calculate the drawing region */
rect1 = x; /* start horiz */
rect2 = y; /* start vert */
rect3 = (x + width) - 1; /* max horiz */
rect4 = (y + height) - 1; /* max vert */
/* setup the drawing region */
lcd_bcm_setup_rect(0x34, rect1, rect2, rect3, rect4, count);
}
/* write out destination address as two 16bit values */
outw((0xE0020 & 0xffff), 0x30010000);
outw((0xE0020 >> 16), 0x30010000);
/* wait for it to be write ready */
while ((inw(0x30030000) & 0x2) == 0);
{
unsigned short *src = (unsigned short*)&lcd_framebuffer[y][x];
unsigned short *end = &src[LCD_WIDTH * height];
int line_rem = (LCD_WIDTH - width);
while (src < end) {
/* Duff's Device to unroll loop */
register int count = width ;
register int n=( count + 7 ) / 8;
switch( count % 8 ) {
case 0: do{ outw(*(src++), 0x30000000);
case 7: outw(*(src++), 0x30000000);
case 6: outw(*(src++), 0x30000000);
case 5: outw(*(src++), 0x30000000);
case 4: outw(*(src++), 0x30000000);
case 3: outw(*(src++), 0x30000000);
case 2: outw(*(src++), 0x30000000);
case 1: outw(*(src++), 0x30000000);
} while(--n>0);
}
src += line_rem;
}
}
/* Top-half of original lcd_bcm_finishup() function */
outw(0x31, 0x30030000);
lcd_bcm_read32(0x1FC);
finishup_needed = 1;
}
/* 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);
}
#define CSUB_X 2
#define CSUB_Y 2
#define RYFAC (31*257)
#define GYFAC (31*257)
#define BYFAC (31*257)
#define RVFAC 11170 /* 31 * 257 * 1.402 */
#define GVFAC (-5690) /* 31 * 257 * -0.714136 */
#define GUFAC (-2742) /* 31 * 257 * -0.344136 */
#define BUFAC 14118 /* 31 * 257 * 1.772 */
#define ROUNDOFFS (127*257)
#define ROUNDOFFSG (63*257)
/* Performance function to blit a YUV bitmap directly to the LCD */
void lcd_yuv_blit(unsigned char * const src[3],
int src_x, int src_y, int stride,
int x, int y, int width, int height)
{
int ymax;
width = (width + 1) & ~1;
if (finishup_needed) {
unsigned int data;
/* Bottom-half of original lcd_bcm_finishup() function */
data = lcd_bcm_read32(0x1F8);
while (data == 0xFFFA0005 || data == 0xFFFF) {
/* This loop can wait for up to 14ms - so we yield() */
yield();
data = lcd_bcm_read32(0x1F8);
}
}
lcd_bcm_read32(0x1FC);
{
int rect1, rect2, rect3, rect4;
int count = (width * height) << 1;
/* calculate the drawing region */
rect1 = x; /* start horiz */
rect2 = y; /* start vert */
rect3 = (x + width) - 1; /* max horiz */
rect4 = (y + height) - 1; /* max vert */
/* setup the drawing region */
lcd_bcm_setup_rect(0x34, rect1, rect2, rect3, rect4, count);
}
/* write out destination address as two 16bit values */
outw((0xE0020 & 0xffff), 0x30010000);
outw((0xE0020 >> 16), 0x30010000);
/* wait for it to be write ready */
while ((inw(0x30030000) & 0x2) == 0);
ymax = y + height - 1 ;
const int stride_div_csub_x = stride/CSUB_X;
for (; y <= ymax ; y++)
{
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
const unsigned char *ysrc = src[0] + stride * src_y + src_x;
const int uvoffset = stride_div_csub_x * (src_y/CSUB_Y) +
(src_x/CSUB_X);
const unsigned char *usrc = src[1] + uvoffset;
const unsigned char *vsrc = src[2] + uvoffset;
const unsigned char *row_end = ysrc + width;
int y, u, v;
int red1, green1, blue1;
int red2, green2, blue2;
unsigned rbits, gbits, bbits;
int rc, gc, bc;
do
{
u = *usrc++ - 128;
v = *vsrc++ - 128;
rc = RVFAC * v + ROUNDOFFS;
gc = GVFAC * v + GUFAC * u + ROUNDOFFSG;
bc = BUFAC * u + ROUNDOFFS;
/* Pixel 1 */
y = *ysrc++;
red1 = RYFAC * y + rc;
green1 = GYFAC * y + gc;
blue1 = BYFAC * y + bc;
/* Pixel 2 */
y = *ysrc++;
red2 = RYFAC * y + rc;
green2 = GYFAC * y + gc;
blue2 = BYFAC * y + bc;
/* Since out of bounds errors are relatively rare, we check two
pixels at once to see if any components are out of bounds, and
then fix whichever is broken. This works due to high values and
negative values both becoming larger than the cutoff when
casted to unsigned. And ORing them together checks all of them
simultaneously. */
if (((unsigned)(red1 | green1 | blue1 |
red2 | green2 | blue2)) > (RYFAC*255+ROUNDOFFS)) {
if (((unsigned)(red1 | green1 | blue1)) >
(RYFAC*255+ROUNDOFFS)) {
if ((unsigned)red1 > (RYFAC*255+ROUNDOFFS))
{
if (red1 < 0)
red1 = 0;
else
red1 = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green1 > (GYFAC*255+ROUNDOFFSG))
{
if (green1 < 0)
green1 = 0;
else
green1 = (GYFAC*255+ROUNDOFFSG);
}
if ((unsigned)blue1 > (BYFAC*255+ROUNDOFFS))
{
if (blue1 < 0)
blue1 = 0;
else
blue1 = (BYFAC*255+ROUNDOFFS);
}
}
if (((unsigned)(red2 | green2 | blue2)) >
(RYFAC*255+ROUNDOFFS)) {
if ((unsigned)red2 > (RYFAC*255+ROUNDOFFS))
{
if (red2 < 0)
red2 = 0;
else
red2 = (RYFAC*255+ROUNDOFFS);
}
if ((unsigned)green2 > (GYFAC*255+ROUNDOFFSG))
{
if (green2 < 0)
green2 = 0;
else
green2 = (GYFAC*255+ROUNDOFFSG);
}
if ((unsigned)blue2 > (BYFAC*255+ROUNDOFFS))
{
if (blue2 < 0)
blue2 = 0;
else
blue2 = (BYFAC*255+ROUNDOFFS);
}
}
}
rbits = red1 >> 16 ;
gbits = green1 >> 15 ;
bbits = blue1 >> 16 ;
outw((rbits << 11) | (gbits << 5) | bbits, 0x30000000);
rbits = red2 >> 16 ;
gbits = green2 >> 15 ;
bbits = blue2 >> 16 ;
outw((rbits << 11) | (gbits << 5) | bbits, 0x30000000);
}
while (ysrc < row_end);
src_y++;
}
/* Top-half of original lcd_bcm_finishup() function */
outw(0x31, 0x30030000);
lcd_bcm_read32(0x1FC);
finishup_needed = 1;
}