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rockbox/firmware/target/coldfire/iaudio/x5/lcd-x5.c
Michael Sevakis 7a75aad26e Got rid of backlight wink between bootloader and firmware start by removing redundant lcd reset 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10751 a1c6a512-1295-4272-9138-f99709370657
2006-08-26 01:52:05 +00:00

532 lines
16 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2004 by Linus Nielsen Feltzing
*
* 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 "thread.h"
#include <string.h>
#include <stdlib.h>
#include "file.h"
#include "debug.h"
#include "system.h"
#include "font.h"
#include "bidi.h"
/** Initialized in lcd_init_device() **/
/* Is the power turned on? */
static bool power_on;
/* Is the display turned on? */
static bool display_on;
/* Amount of vertical offset. Used for flip offset correction/detection. */
static int y_offset;
/* Amount of roll offset (0-127). */
static int roll_offset;
/* Reverse flag. Must be remembered when display is turned off. */
static unsigned short disp_control_rev;
/* Forward declarations */
static void lcd_display_off(void);
/* A15(0x8000) && CS1->CS, A1(0x0002)->RS */
#define LCD_CMD *(volatile unsigned short *)0xf0008000
#define LCD_DATA *(volatile unsigned short *)0xf0008002
/* register defines for the Renesas HD66773R */
#define R_START_OSC 0x00
#define R_DEVICE_CODE_READ 0x00
#define R_DRV_OUTPUT_CONTROL 0x01
#define R_DRV_AC_CONTROL 0x02
#define R_POWER_CONTROL1 0x03
#define R_POWER_CONTROL2 0x04
#define R_ENTRY_MODE 0x05
#define R_COMPARE_REG 0x06
#define R_DISP_CONTROL 0x07
#define R_FRAME_CYCLE_CONTROL 0x0b
#define R_POWER_CONTROL3 0x0c
#define R_POWER_CONTROL4 0x0d
#define R_POWER_CONTROL5 0x0e
#define R_GATE_SCAN_START_POS 0x0f
#define R_VERT_SCROLL_CONTROL 0x11
#define R_1ST_SCR_DRV_POS 0x14
#define R_2ND_SCR_DRV_POS 0x15
#define R_HORIZ_RAM_ADDR_POS 0x16
#define R_VERT_RAM_ADDR_POS 0x17
#define R_RAM_WRITE_DATA_MASK 0x20
#define R_RAM_ADDR_SET 0x21
#define R_WRITE_DATA_2_GRAM 0x22
#define R_RAM_READ_DATA 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_POS 0x3a
#define R_GAMMA_AMP_ADJ_NEG 0x3b
/* called very frequently - inline! */
static inline void lcd_write_reg(int reg, int val)
{
LCD_CMD = 0x0000; /* MSB is ~always~ 0 */
LCD_CMD = reg << 1;
LCD_DATA = (val >> 8) << 1;
LCD_DATA = val << 1;
}
/* called very frequently - inline! */
static inline void lcd_begin_write_gram(void)
{
LCD_CMD = 0x0000;
LCD_CMD = R_WRITE_DATA_2_GRAM << 1;
}
/*** hardware configuration ***/
int lcd_default_contrast(void)
{
return DEFAULT_CONTRAST_SETTING;
}
void lcd_set_contrast(int val)
{
/* Clamp val in range 0-14, 16-30 */
if (val < 1)
val = 0;
else if (val <= 15)
--val;
else if (val > 30)
val = 30;
lcd_write_reg(R_POWER_CONTROL5, 0x2018 + (val << 8));
}
void lcd_set_invert_display(bool yesno)
{
if (yesno == (disp_control_rev == 0x0000))
return;
disp_control_rev = yesno ? 0x0000 : 0x0004;
if (!display_on)
return;
/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
}
/* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno)
{
if (yesno == (y_offset != 0))
return;
y_offset = yesno ? 4 : 0;
if (!power_on)
return;
/* SCN4-0=000x0 (G1/G160) */
lcd_write_reg(R_GATE_SCAN_START_POS, yesno ? 0x0000 : 0x0002);
/* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160)*/
lcd_write_reg(R_DRV_OUTPUT_CONTROL, yesno ? 0x0013 : 0x0313);
/* HEA7-0=0xxx, HSA7-0=0xxx */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, yesno ? 0x8304 : 0x7f00);
}
/* Rolls up the lcd display by the specified amount of lines.
* Lines that are rolled out over the top of the screen are
* rolled in from the bottom again. This is a hardware
* remapping only and all operations on the lcd are affected.
* ->
* @param int lines - The number of lines that are rolled.
* The value must be 0 <= pixels < LCD_HEIGHT.
* Call lcd_update() afterwards */
void lcd_roll(int lines)
{
/* Just allow any value mod LCD_HEIGHT-1. Assumes LCD_HEIGHT == 128. */
if (lines < 0)
lines = -lines & 127;
else
lines = (128 - (lines & 127)) & 127;
roll_offset = lines;
}
static void lcd_power_on(void)
{
/* Be sure standby bit is clear. */
/* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x0000);
/** Power ON Sequence **/
/* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */
lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscillation */
/* 10ms or more for oscillation circuit to stabilize */
sleep(HZ/50);
/* Instruction (1) for power setting; VC2-0, VRH3-0, CAD,
VRL3-0, VCM4-0, VDV4-0 */
/* VC2-0=001 */
lcd_write_reg(R_POWER_CONTROL3, 0x0001);
/* VRL3-0=0100, PON=0, VRH3-0=0001 */
lcd_write_reg(R_POWER_CONTROL4, 0x0401);
/* CAD=1 */
lcd_write_reg(R_POWER_CONTROL2, 0x8000);
/* VCOMG=0, VDV4-0=10011 (19), VCM4-0=11000 */
lcd_write_reg(R_POWER_CONTROL5, 0x1318);
/* Instruction (2) for power setting; BT2-0, DC2-0, AP2-0 */
/* BT2-0=000, DC2-0=001, AP2-0=011, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x002c);
/* Instruction (3) for power setting; VCOMG = "1" */
/* VCOMG=1, VDV4-0=10011 (19), VCM4-0=11000 */
lcd_write_reg(R_POWER_CONTROL5, 0x3318);
/* 40ms or more; time for step-up circuits 1,2 to stabilize */
sleep(HZ/25);
/* Instruction (4) for power setting; PON = "1" */
/* VRL3-0=0100, PON=1, VRH3-0=0001 */
lcd_write_reg(R_POWER_CONTROL4, 0x0411);
/* 40ms or more; time for step-up circuit 4 to stabilize */
sleep(HZ/25);
/* Instructions for other mode settings (in register order). */
/* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160)*/
lcd_write_reg(R_DRV_OUTPUT_CONTROL, y_offset ? 0x0013 : 0x0313);
/* FLD1-0=01 (1 field), B/C=1, EOR=1 (C-pat), NW5-0=000000 (1 row) */
lcd_write_reg(R_DRV_AC_CONTROL, 0x0700);
/* DIT=1, BGR=1, HWM=0, I/D1-0=11, AM=1, LG2-0=000 */
lcd_write_reg(R_ENTRY_MODE, 0x9038);
/* CP15-0=0000000000000000 */
lcd_write_reg(R_COMPARE_REG, 0x0000);
/* NO1-0=01, SDT1-0=00, EQ1-0=00, DIV1-0=00, RTN3-00000 */
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x4000);
/* SCN4-0=000x0 (G1/G160) */
lcd_write_reg(R_GATE_SCAN_START_POS, y_offset ? 0x0000 : 0x0002);
/* VL7-0=0x00 */
lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000);
/* SE17-10(End)=0x9f (159), SS17-10(Start)=0x00 */
lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
/* SE27-20(End)=0x5c (92), SS27-20(Start)=0x00 */
lcd_write_reg(R_2ND_SCR_DRV_POS, 0x5c00);
/* HEA7-0=0xxx, HSA7-0=0xxx */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, y_offset ? 0x8304 : 0x7f00);
/* PKP12-10=0x0, PKP02-00=0x0 */
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0003);
/* PKP32-30=0x4, PKP22-20=0x0 */
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0400);
/* PKP52-50=0x4, PKP42-40=0x7 */
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0407);
/* PRP12-10=0x3, PRP02-00=0x5 */
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0305);
/* PKN12-10=0x0, PKN02-00=0x3 */
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0003);
/* PKN32-30=0x7, PKN22-20=0x4 */
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0704);
/* PKN52-50=0x4, PRN42-40=0x7 */
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0407);
/* PRN12-10=0x5, PRN02-00=0x3 */
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0503);
/* VRP14-10=0x14, VRP03-00=0x09 */
lcd_write_reg(R_GAMMA_AMP_ADJ_POS, 0x1409);
/* VRN14-00=0x06, VRN03-00=0x02 */
lcd_write_reg(R_GAMMA_AMP_ADJ_NEG, 0x0602);
/* 100ms or more; time for step-up circuits to stabilize */
sleep(HZ/10);
power_on = true;
}
static void lcd_power_off(void)
{
/* Display must be off first */
if (display_on)
lcd_display_off();
power_on = false;
/** Power OFF sequence **/
/* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */
/* Step-up1 halt setting bit */
/* BT2-0=110, DC2-0=001, AP2-0=011, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x062c);
/* Step-up3,4 halt setting bit */
/* VRL3-0=0100, PON=0, VRH3-0=0001 */
lcd_write_reg(R_POWER_CONTROL4, 0x0401);
/* VCOMG=0, VDV4-0=10011, VCM4-0=11000 */
lcd_write_reg(R_POWER_CONTROL5, 0x1318);
/* Wait 100ms or more */
sleep(HZ/10);
/* Step-up2,amp halt setting bit */
/* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x0000);
}
static void lcd_display_on(void)
{
/* Be sure power is on first */
if (!power_on)
lcd_power_on();
/** Display ON Sequence **/
/* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */
/* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=01 */
lcd_write_reg(R_DISP_CONTROL, 0x0001);
sleep(HZ/25); /* Wait 2 frames or more */
/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=01 */
lcd_write_reg(R_DISP_CONTROL, 0x0021 | disp_control_rev);
/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=11 */
lcd_write_reg(R_DISP_CONTROL, 0x0023 | disp_control_rev);
sleep(HZ/25); /* Wait 2 frames or more */
/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
display_on = true;
}
static void lcd_display_off(void)
{
display_on = false;
/** Display OFF sequence **/
/* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */
/* EQ1-0=00 already */
/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=10 */
lcd_write_reg(R_DISP_CONTROL, 0x0032 | disp_control_rev);
sleep(HZ/25); /* Wait 2 frames or more */
/* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=10 */
lcd_write_reg(R_DISP_CONTROL, 0x0022 | disp_control_rev);
sleep(HZ/25); /* Wait 2 frames or more */
/* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=00 */
lcd_write_reg(R_DISP_CONTROL, 0x0000);
}
/* LCD init */
void lcd_init_device(void)
{
/* Reset settings */
y_offset = 0;
roll_offset = 0;
disp_control_rev = 0x0004;
#ifdef BOOTLOADER
/* Initial boot requires setting up chip registers but a full reset is
not needed again. */
power_on = false;
display_on = false;
/* LCD Reset */
and_l(~0x00000010, &GPIO1_OUT);
or_l(0x00000010, &GPIO1_ENABLE);
or_l(0x00000010, &GPIO1_FUNCTION);
sleep(HZ/100);
or_l(0x00000010, &GPIO1_OUT);
sleep(HZ/100);
lcd_display_on();
#else
/* Power and display already ON */
power_on = true;
display_on = true;
#endif
}
void lcd_enable(bool on)
{
if (on == display_on)
return;
if (on)
{
lcd_display_on();
/* Probably out of sync and we don't wanna pepper the code with
lcd_update() calls for this. */
lcd_update();
}
else
{
lcd_display_off();
}
}
void lcd_sleep(void)
{
if (power_on)
lcd_power_off();
/* Set standby mode */
/* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=1 */
lcd_write_reg(R_POWER_CONTROL1, 0x0001);
}
/*** update functions ***/
/* Performance function that works with an external buffer
note that by and bheight are in 8-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;
/*if(display_on)*/
}
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420.
* y should have two lines of Y back to back.
* bu and rv should contain the Cb and Cr data for the two lines of Y.
* Stores bu, guv and rv in repective buffers for use in second line.
*/
extern void lcd_write_yuv420_lines(const unsigned char *y,
unsigned char *bu, unsigned char *guv, unsigned char *rv,
int width);
/* Performance function to blit a YUV bitmap directly to the LCD
* src_x, src_y, width and height should be even and within the LCD's
* boundaries.
*/
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)
{
/* IRAM Y, Cb/bu, guv and Cb/rv buffers. */
unsigned char y_ibuf[LCD_WIDTH*2];
unsigned char bu_ibuf[LCD_WIDTH/2];
unsigned char guv_ibuf[LCD_WIDTH/2];
unsigned char rv_ibuf[LCD_WIDTH/2];
const unsigned char *ysrc, *usrc, *vsrc;
const unsigned char *ysrc_max;
if (!display_on)
return;
width = (width + 1) & ~1;
height = (height + 1) & ~1;
/* Set start position and window */
lcd_write_reg(R_RAM_ADDR_SET, (x << 8) |
(((y + roll_offset) & 127) + y_offset));
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
lcd_begin_write_gram();
ysrc = src[0] + src_y*stride + src_x;
usrc = src[1] + (src_y*stride >> 2) + (src_x >> 1);
vsrc = src[2] + (usrc - src[1]);
ysrc_max = ysrc + height*stride;
do
{
memcpy(y_ibuf, ysrc, width);
memcpy(&y_ibuf[width], &ysrc[stride], width);
memcpy(bu_ibuf, usrc, width >> 1);
memcpy(rv_ibuf, vsrc, width >> 1);
lcd_write_yuv420_lines(y_ibuf, bu_ibuf, guv_ibuf, rv_ibuf, width);
ysrc += stride << 1;
usrc += stride >> 1;
vsrc += stride >> 1;
}
while (ysrc < ysrc_max);
} /* lcd_yuv_blit */
/* Update the display.
This must be called after all other LCD functions that change the
lcd frame buffer. */
void lcd_update(void)
{
if (!display_on)
return;
/* Set start position and window */
/* Just add roll offset to start address. CP will roll back around. */
lcd_write_reg(R_RAM_ADDR_SET, y_offset + roll_offset); /* X == 0 */
lcd_write_reg(R_VERT_RAM_ADDR_POS, (LCD_WIDTH-1) << 8);
lcd_begin_write_gram();
lcd_write_data((unsigned short *)lcd_framebuffer,
LCD_WIDTH*LCD_HEIGHT);
} /* lcd_update */
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
int ymax;
const unsigned short *ptr;
if (!display_on)
return;
if (x + width > LCD_WIDTH)
width = LCD_WIDTH - x; /* Clip right */
if (x < 0)
width += x, x = 0; /* Clip left */
if (width <= 0)
return; /* nothing left to do */
ymax = y + height;
if (ymax > LCD_HEIGHT)
ymax = LCD_HEIGHT; /* Clip bottom */
if (y < 0)
y = 0; /* Clip top */
if (y >= ymax)
return; /* nothing left to do */
/* Set start position and window */
lcd_write_reg(R_RAM_ADDR_SET, (x << 8) |
(((y + roll_offset) & 127) + y_offset));
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
lcd_begin_write_gram();
ptr = (unsigned short *)&lcd_framebuffer[y][x];
do
{
lcd_write_data(ptr, width);
ptr += LCD_WIDTH;
}
while (++y < ymax);
} /* lcd_update_rect */
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