287 lines
8.0 KiB
C
287 lines
8.0 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: lcd-nano2g.c 28868 2010-12-21 06:59:17Z Buschel $
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*
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* Copyright (C) 2009 by Dave Chapman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "hwcompat.h"
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#include "kernel.h"
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#include "lcd.h"
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#include "system.h"
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#include "cpu.h"
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#include "pmu-target.h"
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#include "power.h"
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#define R_HORIZ_GRAM_ADDR_SET 0x200
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#define R_VERT_GRAM_ADDR_SET 0x201
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#define R_WRITE_DATA_TO_GRAM 0x202
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#define R_HORIZ_ADDR_START_POS 0x210
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#define R_HORIZ_ADDR_END_POS 0x211
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#define R_VERT_ADDR_START_POS 0x212
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#define R_VERT_ADDR_END_POS 0x213
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/* LCD type 1 register defines */
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#define R_COLUMN_ADDR_SET 0x2a
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#define R_ROW_ADDR_SET 0x2b
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#define R_MEMORY_WRITE 0x2c
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/** globals **/
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int lcd_type; /* also needed in debug-s5l8702.c */
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static inline void s5l_lcd_write_cmd_data(int cmd, int data)
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{
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while (LCD_STATUS & 0x10);
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LCD_WCMD = cmd;
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while (LCD_STATUS & 0x10);
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LCD_WDATA = data;
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}
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static inline void s5l_lcd_write_cmd(unsigned short cmd)
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{
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while (LCD_STATUS & 0x10);
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LCD_WCMD = cmd;
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}
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static inline void s5l_lcd_write_data(unsigned short data)
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{
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while (LCD_STATUS & 0x10);
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LCD_WDATA = data;
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}
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/*** hardware configuration ***/
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int lcd_default_contrast(void)
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{
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return 0x1f;
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}
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void lcd_set_contrast(int val)
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{
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(void)val;
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}
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void lcd_set_invert_display(bool yesno)
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{
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(void)yesno;
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}
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void lcd_set_flip(bool yesno)
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{
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(void)yesno;
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}
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bool lcd_active(void)
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{
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return true;
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}
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void lcd_shutdown(void)
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{
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pmu_write(0x2b, 0); /* Kill the backlight, instantly. */
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pmu_write(0x29, 0);
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if (lcd_type == 3)
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{
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s5l_lcd_write_cmd_data(0x7, 0x172);
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s5l_lcd_write_cmd_data(0x30, 0x3ff);
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sleep(HZ / 10);
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s5l_lcd_write_cmd_data(0x7, 0x120);
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s5l_lcd_write_cmd_data(0x30, 0x0);
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s5l_lcd_write_cmd_data(0x100, 0x780);
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s5l_lcd_write_cmd_data(0x7, 0x0);
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s5l_lcd_write_cmd_data(0x101, 0x260);
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s5l_lcd_write_cmd_data(0x102, 0xa9);
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sleep(HZ / 30);
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s5l_lcd_write_cmd_data(0x100, 0x700);
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s5l_lcd_write_cmd_data(0x100, 0x704);
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}
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else if (lcd_type == 1)
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{
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s5l_lcd_write_cmd(0x28);
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s5l_lcd_write_cmd(0x10);
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sleep(HZ / 10);
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}
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else
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{
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s5l_lcd_write_cmd(0x28);
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sleep(HZ / 20);
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s5l_lcd_write_cmd(0x10);
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sleep(HZ / 20);
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}
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}
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void lcd_sleep(void)
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{
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lcd_shutdown();
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}
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/* LCD init */
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void lcd_init_device(void)
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{
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/* Detect lcd type */
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lcd_type = (PDAT6 & 0x30) >> 4;
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}
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/*** Update functions ***/
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static inline void lcd_write_pixel(fb_data pixel)
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{
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LCD_WDATA = pixel;
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}
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/* Update the display.
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This must be called after all other LCD functions that change the display. */
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void lcd_update(void) ICODE_ATTR;
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void lcd_update(void)
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{
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lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
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}
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/* Line write helper function. */
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extern void lcd_write_line(const fb_data *addr,
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int pixelcount,
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const unsigned int lcd_base_addr);
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/* Update a fraction of the display. */
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void lcd_update_rect(int, int, int, int) ICODE_ATTR;
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void lcd_update_rect(int x, int y, int width, int height)
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{
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int y0, x0, y1, x1;
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fb_data* p;
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/* Both x and width need to be preprocessed due to asm optimizations */
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x = x & ~1; /* ensure x is even */
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width = (width + 3) & ~3; /* ensure width is a multiple of 4 */
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x0 = x; /* start horiz */
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y0 = y; /* start vert */
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x1 = (x + width) - 1; /* max horiz */
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y1 = (y + height) - 1; /* max vert */
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if (lcd_type & 2) {
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s5l_lcd_write_cmd_data(R_HORIZ_ADDR_START_POS, x0);
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s5l_lcd_write_cmd_data(R_HORIZ_ADDR_END_POS, x1);
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s5l_lcd_write_cmd_data(R_VERT_ADDR_START_POS, y0);
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s5l_lcd_write_cmd_data(R_VERT_ADDR_END_POS, y1);
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s5l_lcd_write_cmd_data(R_HORIZ_GRAM_ADDR_SET, (x1 << 8) | x0);
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s5l_lcd_write_cmd_data(R_VERT_GRAM_ADDR_SET, (y1 << 8) | y0);
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s5l_lcd_write_cmd(R_WRITE_DATA_TO_GRAM);
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} else {
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s5l_lcd_write_cmd(R_COLUMN_ADDR_SET);
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s5l_lcd_write_data(x0 >> 8);
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s5l_lcd_write_data(x0 & 0xff);
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s5l_lcd_write_data(x1 >> 8);
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s5l_lcd_write_data(x1 & 0xff);
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s5l_lcd_write_cmd(R_ROW_ADDR_SET);
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s5l_lcd_write_data(y0 >> 8);
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s5l_lcd_write_data(y0 & 0xff);
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s5l_lcd_write_data(y1 >> 8);
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s5l_lcd_write_data(y1 & 0xff);
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s5l_lcd_write_cmd(R_MEMORY_WRITE);
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}
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for (y = y0; y <= y1; y++)
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for (x = x0; x <= x1; x++)
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s5l_lcd_write_data(lcd_framebuffer[y][x]);
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return;
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/* Copy display bitmap to hardware */
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p = &lcd_framebuffer[y0][x0];
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if (LCD_WIDTH == width) {
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/* Write all lines at once */
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lcd_write_line(p, height*LCD_WIDTH, LCD_BASE);
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} else {
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y1 = height;
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do {
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/* Write a single line */
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lcd_write_line(p, width, LCD_BASE);
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p += LCD_WIDTH;
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} while (--y1 > 0 );
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}
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}
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/* Line write helper function for lcd_yuv_blit. Writes two lines of yuv420. */
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extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
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const unsigned int lcd_baseadress,
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int width,
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int stride);
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/* Blit a YUV bitmap directly to the LCD */
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void lcd_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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unsigned int z, y0, x0, y1, x1;;
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unsigned char const * yuv_src[3];
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width = (width + 1) & ~1; /* ensure width is even */
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x0 = x; /* start horiz */
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y0 = y; /* start vert */
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x1 = (x + width) - 1; /* max horiz */
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y1 = (y + height) - 1; /* max vert */
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if (lcd_type & 2) {
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s5l_lcd_write_cmd_data(R_HORIZ_ADDR_START_POS, x0);
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s5l_lcd_write_cmd_data(R_HORIZ_ADDR_END_POS, x1);
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s5l_lcd_write_cmd_data(R_VERT_ADDR_START_POS, y0);
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s5l_lcd_write_cmd_data(R_VERT_ADDR_END_POS, y1);
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s5l_lcd_write_cmd_data(R_HORIZ_GRAM_ADDR_SET, (x1 << 8) | x0);
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s5l_lcd_write_cmd_data(R_VERT_GRAM_ADDR_SET, (y1 << 8) | y0);
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s5l_lcd_write_cmd(0);
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s5l_lcd_write_cmd(R_WRITE_DATA_TO_GRAM);
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} else {
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s5l_lcd_write_cmd(R_COLUMN_ADDR_SET);
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s5l_lcd_write_data(x0); /* Start column */
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s5l_lcd_write_data(x1); /* End column */
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s5l_lcd_write_cmd(R_ROW_ADDR_SET);
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s5l_lcd_write_data(y0); /* Start row */
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s5l_lcd_write_data(y1); /* End row */
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s5l_lcd_write_cmd(R_MEMORY_WRITE);
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}
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z = stride * src_y;
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yuv_src[0] = src[0] + z + src_x;
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yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
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yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
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height >>= 1;
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do {
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lcd_write_yuv420_lines(yuv_src, LCD_BASE, width, stride);
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yuv_src[0] += stride << 1;
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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} while (--height > 0);
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}
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