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rockbox/firmware/target/arm/philips/sa9200/lcd-sa9200.c
Michael Sevakis ce703c85d9 SA9200: Give LCD about an 8% speedup. Sync optional LCD settings to defaults in lcd_init_device. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29029 a1c6a512-1295-4272-9138-f99709370657
2011-01-11 04:33:57 +00:00

564 lines
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Mark Arigo
*
* 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 "system.h"
/* Settings to remember when display is turned off */
static bool invert;
static bool flip;
static int contrast;
static bool power_on;
static bool display_on;
/* Forward declarations */
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
static void lcd_display_off(void);
#endif
/* The SA9200 controller closely matches the register defines for the
Samsung S6D0151 */
#define R_START_OSC 0x00
#define R_DRV_OUTPUT_CONTROL 0x01
#define R_INVERSION_CONTROL 0x02
#define R_ENTRY_MODE 0x03
#define R_DISP_CONTROL 0x07
#define R_BLANK_PERIOD_CONTROL 0x08
#define R_FRAME_CYCLE_CONTROL 0x0b
#define R_EXT_INTERFACE_CONTROL 0x0c
#define R_POWER_CONTROL1 0x10
#define R_GAMMA_CONTROL1 0x11
#define R_POWER_CONTROL2 0x12
#define R_POWER_CONTROL3 0x13
#define R_POWER_CONTROL4 0x14
#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_CONTROL3 0x38
#define R_GATE_SCAN_START_POS 0x40
#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 R_OSC_CONTROL 0x61
#define R_LOW_POWER_MODE 0x69
#define R_PRE_DRIVING_PERIOD 0x70
#define R_GATE_OUT_PERIOD_CTRL 0x71
#define R_SOFTWARE_RESET 0x72
/* Display status */
static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
/* wait for LCD */
static inline void lcd_wait_write(void)
{
while (LCD1_CONTROL & LCD1_BUSY_MASK);
}
/* send LCD pixel */
static inline void lcd_send_pixel(unsigned pixel)
{
lcd_wait_write();
*(volatile uint8_t *)&LCD1_DATA = pixel >> 8;
lcd_wait_write();
*(volatile uint8_t *)&LCD1_DATA = pixel;
}
/* send LCD data */
static void lcd_send_data(unsigned data)
{
lcd_wait_write();
LCD1_DATA = data >> 8;
lcd_wait_write();
LCD1_DATA = data & 0xff;
}
/* send LCD command */
static void lcd_send_command(unsigned cmd)
{
lcd_wait_write();
LCD1_CMD = 0;
lcd_wait_write();
LCD1_CMD = cmd;
}
static void lcd_write_reg(unsigned reg, unsigned data)
{
lcd_send_command(reg);
lcd_send_data(data);
}
/* LCD init */
void lcd_init_device(void)
{
#if 0
/* This is done by the OF bootloader, no need to redo */
DEV_INIT1 &= ~0x3000;
DEV_INIT1 = DEV_INIT1;
DEV_INIT2 &= ~0x400;
LCD1_CONTROL = 0x4680;
udelay(1500);
LCD1_CONTROL = 0x4684;
outl(1, 0x70003018);
LCD1_CONTROL &= ~0x200;
LCD1_CONTROL &= ~0x800;
LCD1_CONTROL &= ~0x400;
udelay(30000);
#endif
/* Already on */
power_on = true;
display_on = true;
/* Reset the options */
lcd_set_invert_display(false);
lcd_set_flip(false);
lcd_set_contrast(DEFAULT_CONTRAST_SETTING);
}
#ifdef HAVE_LCD_SLEEP
static void lcd_power_on(void)
{
LCD1_CONTROL |= 0x1;
/** Power ON Sequence **/
/* Start Oscillation */
lcd_write_reg(R_START_OSC, 0x0001);
sleep(HZ/20); /* 50ms or more */
/* DSTB=0, SAP2-0=001, BT2-0=101, DC2-0=000, AP2-0=001, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x0d04);
/* VR1C=0, VRN14-10=10111, VRP14-10=11111 */
lcd_write_reg(R_GAMMA_CONTROL1, 0x171f);
/* SVC3-0=0000, VRH5-4=01 */
lcd_write_reg(R_POWER_CONTROL2, 0x0001);
/* VCMR=1, PON=0, VRH3-0=1101 */
lcd_write_reg(R_POWER_CONTROL3, 0x080d);
/* VDV6-0=0000100, VCOMG=0, VCM6-0=xxxxxxx */
lcd_write_reg(R_POWER_CONTROL4, 0x0400 | contrast);
/* DSTB=0, SAP2-0=010, BT2-0=010, DC2-0=000, AP2-0=010, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x1208);
sleep(HZ/20); /* 50ms or more */
/* VCMR=1, PON=1, VRH3-0=1100 */
lcd_write_reg(R_POWER_CONTROL3, 0x081c);
sleep(HZ/20); /* OF bootlaoder uses 200ms, no delay in OF firmware */
/* Instructions for other mode settings (in register order). */
lcd_write_reg(R_DRV_OUTPUT_CONTROL, flip ? 0x090c : 0x0a0c);
/* FL1-0=10, FDL=0 */
lcd_write_reg(R_INVERSION_CONTROL, 0x0200);
/* BGR=1, MDT1-0=00, I/D1-0=11, AM=0 */
lcd_write_reg(R_ENTRY_MODE, 0x1030);
/* PT1-0=00, SPT=0, GON=0, DTE=0, CL=0, REV=1, D1-0=01 */
lcd_write_reg(R_DISP_CONTROL, 0x0005);
/* FP3-0=0011, BT3-0=1010 */
lcd_write_reg(R_BLANK_PERIOD_CONTROL, 0x030a);
/* DIV1-0=00, RTN3-0=0000 */
lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0000);
/* RM=0, DM1-0=00, RIM1-0=00 */
lcd_write_reg(R_EXT_INTERFACE_CONTROL, 0x0000);
/* PKP1=0x0, PKP0=0x0 */
lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0000);
/* PKP3=0x2, PKP2=0x4 */
lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0204);
/* PKP5=0x0, PKP4=0x1 */
lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0001);
/* PRP1=0x6, PRP0=0x0 */
lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0600);
/* PKN1=0x6, PKN0=0x7 */
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0607);
/* PKN3=0x3, PKN2=0x5 */
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0305);
/* PKN5=0x7, PKN4=0x7 */
lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0707);
/* PRN1=0x0, PRN0=0x6 */
lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0006);
/* VRN0=0x4, VRP=0x0 */
lcd_write_reg(R_GAMMA_CONTROL3, 0x0400);
/* SCN=0x0 */
lcd_write_reg(R_GATE_SCAN_START_POS, 0x0000);
/* SE1=LCD_HEIGHT-1, SS1=0x0 */
lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00);
/* SE2=0x0, SS2=0x0 */
lcd_write_reg(R_2ND_SCR_DRV_POS, 0x0000);
/* HEA=LCD_WIDTH-1, HSA=0x0 */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00);
/* VEA=LCD_HEIGHT-1, VSA=0x0 */
lcd_write_reg(R_VERT_RAM_ADDR_POS, 0x9f00);
/* Unknown registers */
lcd_write_reg(0x00a8, 0x0125);
lcd_write_reg(0x00a9, 0x0014);
lcd_write_reg(0x00a7, 0x0022);
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 **/
/* DSTB=0, SAP2-0=000, BT2-0=001, DC2-0=000, AP2-0=000, SLP=0, STB=0 */
lcd_write_reg(R_POWER_CONTROL1, 0x0100);
/* VCMR=1, PON=0, VRH3-0=1101 */
lcd_write_reg(R_POWER_CONTROL3, 0x080d);
}
void lcd_sleep(void)
{
if (power_on)
lcd_power_off();
/* Set standby mode */
/* PT1-0=00, SPT=0, GON=1, DTE=1, CL=0, REV=1, D1-0=10 */
lcd_write_reg(R_DISP_CONTROL, 0x0036);
/* DSTB=0, SAP2-0=000, BT2-0=101, DC2-0=000, AP2-0=000, SLP=0, STB=1 */
lcd_write_reg(R_POWER_CONTROL1, 0x0501);
LCD1_CONTROL &= ~0xffff0001;
}
#endif
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
static void lcd_display_off(void)
{
display_on = false;
/** Display OFF sequence **/
/* PT1-0=10, SPT=0, GON=1, DTE=1, CL=0, REV=1, D1-0=10 */
lcd_write_reg(R_DISP_CONTROL, 0x1036);
sleep(HZ/25); /* 2 or more frames */
/* PT1-0=10, SPT=0, GON=1, DTE=0, CL=0, REV=1, D1-0=00 */
lcd_write_reg(R_DISP_CONTROL, 0x1034);
sleep(HZ/500); /* 1ms or more */
/* PT1-0=10, SPT=0, GON=0, DTE=0, CL=0, REV=1, D1-0=00 */
lcd_write_reg(R_DISP_CONTROL, 0x1004);
sleep(HZ/25); /* 2 or more frames */
}
#endif
#if defined(HAVE_LCD_ENABLE)
static void lcd_display_on(void)
{
/* Be sure power is on first */
if (!power_on)
lcd_power_on();
/** Display ON Sequence **/
/* PT1-0=00, SPT=0, GON=1, DTE=0, CL=0, REV=0, D1-0=01 */
lcd_write_reg(R_DISP_CONTROL, 0x0021);
sleep(HZ/500); /* 1ms or more */
/* PT1-0=00, SPT=0, GON=1, DTE=0, CL=0, REV=0, D1-0=11 */
lcd_write_reg(R_DISP_CONTROL, 0x0023);
sleep(HZ/25); /* 2 or more frames */
/* PT1-0=10, SPT=0, GON=1, DTE=1, CL=0, REV=x, D1-0=11 */
lcd_write_reg(R_DISP_CONTROL, invert ? 0x1033 : 0x1037);
display_on = true;
}
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();
send_event(LCD_EVENT_ACTIVATION, NULL);
}
else
{
lcd_display_off();
}
}
#endif
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
bool lcd_active(void)
{
return display_on;
}
#endif
/*** hardware configuration ***/
int lcd_default_contrast(void)
{
return DEFAULT_CONTRAST_SETTING;
}
void lcd_set_contrast(int val)
{
contrast = val & 0x7f;
if (!display_on)
return;
/* VDV6-0=0000100, VCOMG=0, VCM6-0=xxxxxxx */
lcd_write_reg(R_POWER_CONTROL4, 0x0400 | contrast);
}
void lcd_set_invert_display(bool yesno)
{
invert = yesno;
if (!display_on)
return;
/* PT1-0=10, SPT=0, GON=1, DTE=1, CL=0, REV=x, D1-0=11 */
lcd_write_reg(R_DISP_CONTROL, invert ? 0x1033 : 0x1037);
}
/* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno)
{
flip = yesno;
if (!display_on)
return;
/* DPL=0, EPL=1, SM=0, GS=x, SS=x, NL4-0=01100 */
lcd_write_reg(R_DRV_OUTPUT_CONTROL, flip ? 0x090c : 0x0a0c);
}
void lcd_yuv_set_options(unsigned options)
{
lcd_yuv_options = options;
}
/* Performance function to blit a YUV bitmap directly to the LCD */
void lcd_write_yuv420_lines(unsigned char const * const src[3],
int width,
int stride);
void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
int width,
int stride,
int x_screen,
int y_screen);
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)
{
const unsigned char *yuv_src[3];
const unsigned char *ysrc_max;
int options;
if (!display_on)
return;
width &= ~1;
height &= ~1;
/* calculate the drawing region */
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
/* convert YUV coordinates to screen coordinates */
y = LCD_WIDTH - 1 - y;
/* 2px strip: cursor moves left, then down in gram */
/* BGR=1, MDT1-0=00, I/D1-0=10, AM=0 */
lcd_write_reg(R_ENTRY_MODE, 0x1020);
yuv_src[0] = src[0] + src_y * stride + src_x;
yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1);
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
ysrc_max = yuv_src[0] + height * stride;
/* cache options setting */
options = lcd_yuv_options;
do
{
/* max horiz << 8 | start horiz */
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y << 8) | (y - 1));
/* position cursor (set AD0-AD15) */
lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y);
/* start drawing */
lcd_send_command(R_WRITE_DATA_2_GRAM);
if (options & LCD_YUV_DITHER)
{
lcd_write_yuv420_lines_odither(yuv_src, width, stride,
y, x);
}
else
{
lcd_write_yuv420_lines(yuv_src, width, stride);
}
y -= 2; /* move strip by "down" 2 px */
yuv_src[0] += stride << 1;
yuv_src[1] += stride >> 1;
yuv_src[2] += stride >> 1;
}
while (yuv_src[0] < ysrc_max);
/* back to normal right, then down cursor in gram */
/* BGR=1, MDT1-0=00, I/D1-0=11, AM=0 */
lcd_write_reg(R_ENTRY_MODE, 0x1030);
}
/* Update the display.
This must be called after all other LCD functions that change the display. */
void lcd_update(void)
{
const fb_data *addr, *end;
if (!display_on)
return;
addr = &lcd_framebuffer[0][0];
end = &lcd_framebuffer[LCD_HEIGHT - 1][LCD_WIDTH];
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (LCD_WIDTH - 1) << 8);
lcd_write_reg(R_VERT_RAM_ADDR_POS, (LCD_HEIGHT - 1) << 8);
lcd_write_reg(R_RAM_ADDR_SET, 0);
lcd_send_command(R_WRITE_DATA_2_GRAM);
do
{
lcd_send_pixel(*addr++);
lcd_send_pixel(*addr++);
}
while (addr < end);
}
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
const fb_data *addr;
if (!display_on)
return;
if (x + width > LCD_WIDTH)
width = LCD_WIDTH - x;
if (x < 0)
width += x, x = 0;
if (width <= 0)
return; /* Nothing left to do. */
if (y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
if (y < 0)
height += y, y = 0;
if (height <= 0)
return; /* Nothing left to do. */
addr = &lcd_framebuffer[y][x];
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((x + width - 1) << 8) | x);
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((y + height - 1) << 8) | y);
lcd_write_reg(R_RAM_ADDR_SET, (y << 8) | x);
lcd_send_command(R_WRITE_DATA_2_GRAM);
do
{
int w = width - 1;
if (w > 0)
{
do
{
lcd_send_pixel(*addr++);
lcd_send_pixel(*addr++);
w -= 2;
}
while (w > 0);
}
if (w == 0)
lcd_send_pixel(*addr++); /* odd width */
addr += LCD_WIDTH - width;
}
while (--height > 0);
}
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