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rockbox/firmware/target/arm/rk27xx/rk27generic/lcd-rk27generic.c

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C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 Marcin Bukat
*
* 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 "kernel.h"
#include "lcd.h"
#include "system.h"
#include "cpu.h"
#include "spfd5420a.h"
#include "lcdif-rk27xx.h"
/* TODO: convert to udelay() */
static inline void delay_nop(int cycles)
{
asm volatile ("1: subs %[n], %[n], #1 \n\t"
" bne 1b"
:
: [n] "r" (cycles));
}
/* converts RGB565 pixel into internal lcd bus format */
static unsigned int lcd_pixel_transform(unsigned short rgb565)
{
unsigned int r, g, b;
b = rgb565 & 0x1f;
g = (rgb565 >> 5) & 0x3f;
r = (rgb565 >> 11) & 0x1f;
return r<<19 | g<<10 | b<<3;
}
/* not tested */
static void lcd_sleep(bool sleep)
{
if (sleep)
{
/* enter sleep mode */
lcd_write_reg(DISPLAY_CTRL1, 0x0170);
delay_nop(50);
lcd_write_reg(DISPLAY_CTRL1, 0x0000);
delay_nop(50);
lcd_write_reg(PWR_CTRL1, 0x14B4);
}
else
{
/* return to normal operation */
lcd_write_reg(PWR_CTRL1, 0x14B0);
delay_nop(50);
lcd_write_reg(DISPLAY_CTRL1, 0x0173);
}
lcd_cmd(GRAM_WRITE);
}
void lcd_display_init()
{
unsigned int x, y;
lcd_write_reg(RESET, 0x0001);
delay_nop(10000);
lcd_write_reg(RESET, 0x0000);
delay_nop(10000);
lcd_write_reg(IF_ENDIAN, 0x0000); /* order of receiving data */
lcd_write_reg(DRIVER_OUT_CTRL, 0x0000);
lcd_write_reg(ENTRY_MODE, 0x1038);
lcd_write_reg(WAVEFORM_CTRL, 0x0100);
lcd_write_reg(SHAPENING_CTRL, 0x0000);
lcd_write_reg(DISPLAY_CTRL2, 0x0808);
lcd_write_reg(LOW_PWR_CTRL1, 0x0001);
lcd_write_reg(LOW_PWR_CTRL2, 0x0010);
lcd_write_reg(EXT_DISP_CTRL1, 0x0000);
lcd_write_reg(EXT_DISP_CTRL2, 0x0000);
lcd_write_reg(BASE_IMG_SIZE, 0x3100);
lcd_write_reg(BASE_IMG_CTRL, 0x0001);
lcd_write_reg(VSCROLL_CTRL, 0x0000);
lcd_write_reg(PART1_POS, 0x0000);
lcd_write_reg(PART1_START, 0x0000);
lcd_write_reg(PART1_END, 0x018F);
lcd_write_reg(PART2_POS, 0x0000);
lcd_write_reg(PART2_START, 0x0000);
lcd_write_reg(PART2_END, 0x0000);
lcd_write_reg(PANEL_IF_CTRL1, 0x0011);
delay_nop(10000);
lcd_write_reg(PANEL_IF_CTRL2, 0x0202);
lcd_write_reg(PANEL_IF_CTRL3, 0x0300);
delay_nop(10000);
lcd_write_reg(PANEL_IF_CTRL4, 0x021E);
lcd_write_reg(PANEL_IF_CTRL5, 0x0202);
lcd_write_reg(PANEL_IF_CTRL6, 0x0100);
lcd_write_reg(FRAME_MKR_CTRL, 0x0000);
lcd_write_reg(MDDI_CTRL, 0x0000);
lcd_write_reg(GAMMA_CTRL1, 0x0101);
lcd_write_reg(GAMMA_CTRL2, 0x0000);
lcd_write_reg(GAMMA_CTRL3, 0x0016);
lcd_write_reg(GAMMA_CTRL4, 0x2913);
lcd_write_reg(GAMMA_CTRL5, 0x260B);
lcd_write_reg(GAMMA_CTRL6, 0x0101);
lcd_write_reg(GAMMA_CTRL7, 0x1204);
lcd_write_reg(GAMMA_CTRL8, 0x0415);
lcd_write_reg(GAMMA_CTRL9, 0x0205);
lcd_write_reg(GAMMA_CTRL10, 0x0303);
lcd_write_reg(GAMMA_CTRL11, 0x0E05);
lcd_write_reg(GAMMA_CTRL12, 0x0D01);
lcd_write_reg(GAMMA_CTRL13, 0x010D);
lcd_write_reg(GAMMA_CTRL14, 0x050E);
lcd_write_reg(GAMMA_CTRL15, 0x0303);
lcd_write_reg(GAMMA_CTRL16, 0x0502);
/* power on */
lcd_write_reg(DISPLAY_CTRL1, 0x0001);
lcd_write_reg(PWR_CTRL6, 0x0001);
lcd_write_reg(PWR_CTRL7, 0x0060);
delay_nop(50000);
lcd_write_reg(PWR_CTRL1, 0x16B0);
delay_nop(10000);
lcd_write_reg(PWR_CTRL2, 0x0147);
delay_nop(10000);
lcd_write_reg(PWR_CTRL3, 0x0117);
delay_nop(10000);
lcd_write_reg(PWR_CTRL4, 0x2F00);
delay_nop(50000);
lcd_write_reg(VCOM_HV2, 0x0000); /* src 0x0090 */
delay_nop(10000);
lcd_write_reg(VCOM_HV1, 0x0008); /* src 0x000A */
lcd_write_reg(PWR_CTRL3, 0x01BE);
delay_nop(10000);
/* addresses setup */
lcd_write_reg(WINDOW_H_START, 0x0000);
lcd_write_reg(WINDOW_H_END, 0x00EF); /* 239 */
lcd_write_reg(WINDOW_V_START, 0x0000);
lcd_write_reg(WINDOW_V_END, 0x018F); /* 399 */
lcd_write_reg(GRAM_H_ADDR, 0x0000);
lcd_write_reg(GRAM_V_ADDR, 0x0000);
/* display on */
lcd_write_reg(DISPLAY_CTRL1, 0x0021);
delay_nop(40000);
lcd_write_reg(DISPLAY_CTRL1, 0x0061);
delay_nop(100000);
lcd_write_reg(DISPLAY_CTRL1, 0x0173);
delay_nop(300000);
/* clear screen */
lcd_cmd(GRAM_WRITE);
for (x=0; x<LCD_WIDTH; x++)
for(y=0; y<LCD_HEIGHT; y++)
lcd_data(0x000000);
lcd_sleep(false);
}
void lcd_update_rect(int x, int y, int width, int height)
{
int px = x, py = y;
int pxmax = x + width, pymax = y + height;
/* addresses setup */
lcd_write_reg(WINDOW_H_START, y);
lcd_write_reg(WINDOW_H_END, pymax-1);
lcd_write_reg(WINDOW_V_START, x);
lcd_write_reg(WINDOW_V_END, pxmax-1);
lcd_write_reg(GRAM_H_ADDR, y);
lcd_write_reg(GRAM_V_ADDR, x);
lcd_cmd(GRAM_WRITE);
for (py=y; py<pymax; py++)
{
for (px=x; px<pxmax; px++)
LCD_DATA = lcd_pixel_transform(lcd_framebuffer[py][px]);
}
}
/* Blit a YUV bitmap directly to the LCD */
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)
{
(void)src;
(void)src_x;
(void)src_y;
(void)stride;
(void)x;
(void)y;
(void)width;
(void)height;
}
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