b37e6bc8c1
Change all lcd drivers to using a pointer to the static framebuffer instead of directly accessing the static array. This will let us later do fun things like dynamic framebuffer sizes (RaaA) or ability to use different buffers for different layers (dynamic skin backdrops!) Change-Id: I0a4d58a9d7b55e6c932131b929e5d4c9f9414b06
328 lines
8.4 KiB
C
328 lines
8.4 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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* $Id$
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*
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* Copyright (C) 2009 by Mark Arigo
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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 "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "system.h"
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/* register defines for Philips LCD 220x176x16 - model: LPH9165-2 */
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#define LCD_REG_UNKNOWN_00 0x00
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#define LCD_REG_UNKNOWN_01 0x01
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#define LCD_REG_UNKNOWN_05 0x05
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#define LCD_REG_WRITE_DATA_2_GRAM 0x06
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#define LCD_REG_HORIZ_ADDR_START 0x08
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#define LCD_REG_HORIZ_ADDR_END 0x09
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#define LCD_REG_VERT_ADDR_START 0x0a
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#define LCD_REG_VERT_ADDR_END 0x0b
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/* whether the lcd is currently enabled or not */
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static bool lcd_enabled;
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/* Display status */
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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/* Value used for flipping. Must be remembered when display is turned off. */
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static unsigned short flip;
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/* Used for flip offset correction */
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static int x_offset;
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/* Inverse value. Must be remembered when display is turned off. */
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static unsigned short invert;
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/* wait for LCD */
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static inline void lcd_wait_write(void)
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{
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while (LCD2_PORT & LCD2_BUSY_MASK);
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}
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/* send LCD data */
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static void lcd_send_data(unsigned data)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_DATA_MASK | (data & 0xff);
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}
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/* send LCD command */
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static void lcd_send_reg(unsigned reg)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_CMD_MASK | (reg & 0xff);
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lcd_wait_write();
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}
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void lcd_init_device(void)
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{
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x_offset = 16;
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invert = 0x00;
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flip = 0x40;
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lcd_enabled = true;
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}
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#ifdef HAVE_LCD_ENABLE
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/* enable / disable lcd */
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void lcd_enable(bool on)
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{
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if (on == lcd_enabled)
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return;
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if (on) /* lcd_display_on() */
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{
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lcd_send_reg(LCD_REG_UNKNOWN_00);
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lcd_send_data(0x00 | invert);
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lcd_send_reg(LCD_REG_UNKNOWN_01);
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lcd_send_data(0x08 | flip);
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lcd_send_reg(LCD_REG_UNKNOWN_05);
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lcd_send_data(0x0f);
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sleep(HZ/10); /* 100ms */
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/* Probably out of sync and we don't wanna pepper the code with
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lcd_update() calls for this. */
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lcd_update();
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send_event(LCD_EVENT_ACTIVATION, NULL);
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lcd_enabled = true;
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}
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else /* lcd_display_off() */
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{
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lcd_send_reg(LCD_REG_UNKNOWN_00);
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lcd_send_data(0x08);
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lcd_enabled = false;
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}
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}
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bool lcd_active(void)
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{
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return lcd_enabled;
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}
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#endif /* HAVE_LCD_ENABLE */
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/*** hardware configuration ***/
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int lcd_default_contrast(void)
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{
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return DEFAULT_CONTRAST_SETTING;
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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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invert = (yesno) ? 0x40 : 0x00;
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lcd_send_reg(LCD_REG_UNKNOWN_00);
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lcd_send_data(invert);
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}
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/* turn the display upside down (call lcd_update() afterwards) */
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void lcd_set_flip(bool yesno)
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{
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flip = (yesno) ? 0x80 : 0x40;
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x_offset = (yesno) ? 4 : 16;
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lcd_send_reg(LCD_REG_UNKNOWN_01);
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lcd_send_data(0x08 | flip);
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}
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void lcd_yuv_set_options(unsigned options)
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{
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lcd_yuv_options = options;
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}
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#define CSUB_X 2
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#define CSUB_Y 2
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/* YUV- > RGB565 conversion
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* |R| |1.000000 -0.000001 1.402000| |Y'|
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* |G| = |1.000000 -0.334136 -0.714136| |Pb|
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* |B| |1.000000 1.772000 0.000000| |Pr|
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* Scaled, normalized, rounded and tweaked to yield RGB 565:
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* |R| |74 0 101| |Y' - 16| >> 9
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* |G| = |74 -24 -51| |Cb - 128| >> 8
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* |B| |74 128 0| |Cr - 128| >> 9
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*/
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extern void lcd_yuv_write_inner_loop(unsigned char const * const ysrc,
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unsigned char const * const usrc,
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unsigned char const * const vsrc,
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int width);
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/* Performance function to 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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int h;
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width = (width + 1) & ~1;
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lcd_send_reg(LCD_REG_HORIZ_ADDR_START);
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lcd_send_data(y);
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lcd_send_reg(LCD_REG_HORIZ_ADDR_END);
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lcd_send_data(y + height - 1);
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lcd_send_reg(LCD_REG_VERT_ADDR_START);
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lcd_send_data(x + x_offset);
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lcd_send_reg(LCD_REG_VERT_ADDR_END);
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lcd_send_data(x + width - 1 + x_offset);
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lcd_send_reg(LCD_REG_WRITE_DATA_2_GRAM);
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const int stride_div_csub_x = stride/CSUB_X;
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h=0;
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while (1)
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{
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/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
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const unsigned char *ysrc = src[0] + stride * src_y + src_x;
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const int uvoffset = stride_div_csub_x * (src_y/CSUB_Y) +
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(src_x/CSUB_X);
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const unsigned char *usrc = src[1] + uvoffset;
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const unsigned char *vsrc = src[2] + uvoffset;
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int pixels_to_write;
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if (h==0)
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{
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while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
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LCD2_BLOCK_CONFIG = 0;
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if (height == 0) break;
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pixels_to_write = (width * height) * 2;
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h = height;
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/* calculate how much we can do in one go */
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if (pixels_to_write > 0x10000)
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{
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h = (0x10000/2) / width;
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pixels_to_write = (width * h) * 2;
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}
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height -= h;
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LCD2_BLOCK_CTRL = 0x10000080;
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LCD2_BLOCK_CONFIG = 0xc0010000 | (pixels_to_write - 1);
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LCD2_BLOCK_CTRL = 0x34000000;
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}
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lcd_yuv_write_inner_loop(ysrc,usrc,vsrc,width);
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src_y++;
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h--;
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}
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while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
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LCD2_BLOCK_CONFIG = 0;
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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)
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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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/* Update a fraction of the display. */
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void lcd_update_rect(int x, int y, int width, int height)
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{
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unsigned long *addr;
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int new_x, new_width;
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/* Ensure x and width are both even - so we can read 32-bit aligned
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data from lcd_framebuffer */
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new_x = x&~1;
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new_width = width&~1;
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if (new_x+new_width < x+width) new_width += 2;
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x = new_x;
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width = new_width;
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if (x + width >= LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height >= LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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if ((width <= 0) || (height <= 0))
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return; /* Nothing left to do. */
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lcd_send_reg(LCD_REG_HORIZ_ADDR_START);
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lcd_send_data(y);
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lcd_send_reg(LCD_REG_HORIZ_ADDR_END);
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lcd_send_data(y + height - 1);
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lcd_send_reg(LCD_REG_VERT_ADDR_START);
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lcd_send_data(x + x_offset);
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lcd_send_reg(LCD_REG_VERT_ADDR_END);
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lcd_send_data(x + width - 1 + x_offset);
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lcd_send_reg(LCD_REG_WRITE_DATA_2_GRAM);
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addr = (unsigned long*)FBADDR(x,y);
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while (height > 0)
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{
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int c, r;
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int h, pixels_to_write;
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pixels_to_write = (width * height) * 2;
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h = height;
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/* calculate how much we can do in one go */
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if (pixels_to_write > 0x10000)
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{
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h = (0x10000/2) / width;
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pixels_to_write = (width * h) * 2;
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}
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LCD2_BLOCK_CTRL = 0x10000080;
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LCD2_BLOCK_CONFIG = 0xc0010000 | (pixels_to_write - 1);
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LCD2_BLOCK_CTRL = 0x34000000;
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/* for each row */
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for (r = 0; r < h; r++)
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{
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/* for each column */
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for (c = 0; c < width; c += 2)
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{
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while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_TXOK));
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/* output 2 pixels */
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LCD2_BLOCK_DATA = *addr++;
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}
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addr += (LCD_WIDTH - width)/2;
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}
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while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
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LCD2_BLOCK_CONFIG = 0;
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height -= h;
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}
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}
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