532 lines
14 KiB
C
532 lines
14 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) 2004 by Linus Nielsen Feltzing
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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 "thread.h"
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#include <string.h>
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#include <stdlib.h>
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "bidi.h"
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#include "clock-target.h"
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static bool display_on = false; /* is the display turned on? */
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static bool display_flipped = false;
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/* we need to write a red pixel for correct button reads
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* (see lcd_button_support()), but that must not happen while the lcd is updating
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* so block lcd_button_support the during updates */
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static volatile bool lcd_busy = false;
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/* register defines */
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#define R_START_OSC 0x00
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#define R_DRV_OUTPUT_CONTROL 0x01
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#define R_DRV_WAVEFORM_CONTROL 0x02
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#define R_ENTRY_MODE 0x03
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#define R_COMPARE_REG1 0x04
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#define R_COMPARE_REG2 0x05
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#define R_DISP_CONTROL1 0x07
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#define R_DISP_CONTROL2 0x08
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#define R_DISP_CONTROL3 0x09
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#define R_FRAME_CYCLE_CONTROL 0x0b
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#define R_EXT_DISP_IF_CONTROL 0x0c
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#define R_POWER_CONTROL1 0x10
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#define R_POWER_CONTROL2 0x11
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#define R_POWER_CONTROL3 0x12
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#define R_POWER_CONTROL4 0x13
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#define R_RAM_ADDR_SET 0x21
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#define R_WRITE_DATA_2_GRAM 0x22
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#define R_GAMMA_FINE_ADJ_POS1 0x30
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#define R_GAMMA_FINE_ADJ_POS2 0x31
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#define R_GAMMA_FINE_ADJ_POS3 0x32
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#define R_GAMMA_GRAD_ADJ_POS 0x33
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#define R_GAMMA_FINE_ADJ_NEG1 0x34
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#define R_GAMMA_FINE_ADJ_NEG2 0x35
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#define R_GAMMA_FINE_ADJ_NEG3 0x36
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#define R_GAMMA_GRAD_ADJ_NEG 0x37
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#define R_GAMMA_AMP_ADJ_RES_POS 0x38
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#define R_GAMMA_AMP_AVG_ADJ_RES_NEG 0x39
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#define R_GATE_SCAN_POS 0x40
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#define R_VERT_SCROLL_CONTROL 0x41
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#define R_1ST_SCR_DRV_POS 0x42
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#define R_2ND_SCR_DRV_POS 0x43
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#define R_HORIZ_RAM_ADDR_POS 0x44
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#define R_VERT_RAM_ADDR_POS 0x45
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/* Flip Flag */
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#define R_ENTRY_MODE_HORZ_NORMAL 0x7030
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#define R_ENTRY_MODE_HORZ_FLIPPED 0x7000
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static unsigned short r_entry_mode = R_ENTRY_MODE_HORZ_NORMAL;
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#define R_ENTRY_MODE_VERT 0x7038
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#define R_ENTRY_MODE_SOLID_VERT 0x1038
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#define R_ENTRY_MODE_VIDEO 0x7020
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/* Reverse Flag */
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#define R_DISP_CONTROL_NORMAL 0x0004
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#define R_DISP_CONTROL_REV 0x0000
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static unsigned short r_disp_control_rev = R_DISP_CONTROL_NORMAL;
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/* TODO: Implement this function */
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static void lcd_delay(int x)
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{
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/* This is just arbitrary - the OF does something more complex */
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x *= 1024;
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while (x--);
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}
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/* DBOP initialisation, do what OF does */
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static void ams3525_dbop_init(void)
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{
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CGU_DBOP = (1<<3) | AS3525_DBOP_DIV;
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DBOP_TIMPOL_01 = 0xe167e167;
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DBOP_TIMPOL_23 = 0xe167006e;
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DBOP_CTRL = (1<<18)|(1<<12)|(8<<0); /* short count, 16bit write, read-timing =8 */
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GPIOB_AFSEL = 0xfc;
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GPIOC_AFSEL = 0xff;
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DBOP_TIMPOL_23 = 0x6000e;
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DBOP_CTRL = (1<<18)|(1<<16)|(1<<12)|(8<<0);/* short count,write enable, 16bit write, read-timing =8 */
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DBOP_TIMPOL_01 = 0x6e167;
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DBOP_TIMPOL_23 = 0xa167e06f;
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/* TODO: The OF calls some other functions here, but maybe not important */
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}
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static void lcd_write_cmd(int cmd)
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{
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/* Write register */
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DBOP_CTRL &= ~(1<<14);
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DBOP_TIMPOL_23 = 0xa167006e;
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DBOP_DOUT = cmd;
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/* Wait for fifo to empty */
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while ((DBOP_STAT & (1<<10)) == 0);
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/* Fuze OF has this loop and it seems to help us now also */
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int delay=8;
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while(delay--);
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DBOP_TIMPOL_23 = 0xa167e06f;
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}
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void lcd_write_data(const fb_data* p_bytes, int count)
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{
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while (count--)
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{
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DBOP_DOUT = *p_bytes++;
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/* Wait for fifo to empty */
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while ((DBOP_STAT & (1<<10)) == 0);
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}
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}
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static void lcd_write_reg(int reg, int value)
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{
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fb_data data = value;
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lcd_write_cmd(reg);
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lcd_write_data(&data, 1);
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}
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/*** hardware configuration ***/
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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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r_disp_control_rev = yesno ? R_DISP_CONTROL_REV :
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R_DISP_CONTROL_NORMAL;
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if (display_on)
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{
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lcd_write_reg(R_DISP_CONTROL1, 0x0033 | r_disp_control_rev);
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}
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}
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/* turn the display upside down */
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void lcd_set_flip(bool yesno)
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{
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display_flipped = yesno;
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r_entry_mode = yesno ? R_ENTRY_MODE_HORZ_FLIPPED :
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R_ENTRY_MODE_HORZ_NORMAL;
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}
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static void lcd_window(int xmin, int ymin, int xmax, int ymax)
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{
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if (!display_flipped)
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{
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (xmax << 8) | xmin);
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lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
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lcd_write_reg(R_RAM_ADDR_SET, (ymin << 8) | xmin);
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}
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else
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{
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
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lcd_write_reg(R_VERT_RAM_ADDR_POS, ((LCD_HEIGHT-1 - ymin) << 8) | (LCD_HEIGHT-1 - ymax));
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lcd_write_reg(R_RAM_ADDR_SET, ((LCD_HEIGHT-1 - ymin) << 8) | (LCD_WIDTH-1 - xmin));
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}
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}
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static void _display_on(void)
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{
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/* Initialisation the display the same way as the original firmware */
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lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscilation */
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lcd_write_reg(R_DRV_OUTPUT_CONTROL, 0x011b); /* 220 lines, GS=0, SS=1 */
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/* B/C = 1: n-line inversion form
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* EOR = 1: polarity inversion occurs by applying an EOR to odd/even
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* frame select signal and an n-line inversion signal.
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* FLD = 01b: 1 field interlaced scan, external display iface */
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lcd_write_reg(R_DRV_WAVEFORM_CONTROL, 0x0700);
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/* Address counter updated in horizontal direction; left to right;
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* vertical increment horizontal increment.
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* data format for 8bit transfer or spi = 65k (5,6,5) */
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lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
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/* Replace data on writing to GRAM */
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lcd_write_reg(R_COMPARE_REG1, 0);
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lcd_write_reg(R_COMPARE_REG2, 0);
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lcd_write_reg(R_DISP_CONTROL1, 0x0000 | r_disp_control_rev); /* GON = 0, DTE = 0, D1-0 = 00b */
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/* Front porch lines: 2; Back porch lines: 2; */
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lcd_write_reg(R_DISP_CONTROL2, 0x0203);
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/* Scan cycle = 0 frames */
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lcd_write_reg(R_DISP_CONTROL3, 0x0000);
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/* 16 clocks */
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lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x0000);
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/* 18-bit RGB interface (one transfer/pixel)
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* internal clock operation;
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* System interface/VSYNC interface */
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lcd_write_reg(R_EXT_DISP_IF_CONTROL, 0x0000);
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/* zero everything*/
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lcd_write_reg(R_POWER_CONTROL1, 0x0000); /* STB = 0, SLP = 0 */
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lcd_delay(10);
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/* initialise power supply */
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/* DC12-10 = 000b: Step-up1 = clock/8,
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* DC02-00 = 000b: Step-up2 = clock/16,
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* VC2-0 = 010b: VciOUT = 0.87 * VciLVL */
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lcd_write_reg(R_POWER_CONTROL2, 0x0002);
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/* VRH3-0 = 1000b: Vreg1OUT = REGP * 1.90 */
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lcd_write_reg(R_POWER_CONTROL3, 0x0008);
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lcd_delay(40);
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lcd_write_reg(R_POWER_CONTROL4, 0x0000); /* VCOMG = 0 */
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/* This register is unknown */
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lcd_write_reg(0x56, 0x80f);
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lcd_write_reg(R_POWER_CONTROL1, 0x4140);
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lcd_delay(10);
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lcd_write_reg(R_POWER_CONTROL2, 0x0000);
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lcd_write_reg(R_POWER_CONTROL3, 0x0013);
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lcd_delay(20);
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lcd_write_reg(R_POWER_CONTROL4, 0x6d0e);
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lcd_delay(20);
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lcd_write_reg(R_POWER_CONTROL4, 0x6d0e);
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0002);
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0707);
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lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0182);
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lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0203);
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0706);
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0006);
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lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0706);
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lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0000);
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lcd_write_reg(R_GAMMA_AMP_ADJ_RES_POS, 0x030f);
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lcd_write_reg(R_GAMMA_AMP_AVG_ADJ_RES_NEG, 0x0f08);
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lcd_write_reg(R_GATE_SCAN_POS, 0);
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lcd_write_reg(R_VERT_SCROLL_CONTROL, 0);
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lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
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lcd_write_reg(R_1ST_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
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lcd_write_reg(R_2ND_SCR_DRV_POS, (LCD_HEIGHT-1) << 8);
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lcd_write_reg(R_DISP_CONTROL1, 0x0033 | r_disp_control_rev);
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display_on=true; /* must be done before calling lcd_update() */
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lcd_update();
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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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ams3525_dbop_init();
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/* Init GPIOs the same as the OF */
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GPIOA_DIR |= (1<<5);
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GPIOA_PIN(5) = 0;
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GPIOA_PIN(4) = 0; /*c80b0040 := 0;*/
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lcd_delay(1);
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GPIOA_PIN(5) = (1<<5);
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lcd_delay(1);
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_display_on();
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}
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#if defined(HAVE_LCD_ENABLE)
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void lcd_enable(bool on)
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{
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if(display_on!=on)
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{
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if(on)
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{
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_display_on();
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lcd_activation_call_hook();
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}
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else
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{
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display_on=false;
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lcd_write_reg(R_POWER_CONTROL1, 0x0001);
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}
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}
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}
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#endif
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#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
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bool lcd_active(void)
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{
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return display_on;
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}
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#endif
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/*** update functions ***/
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static unsigned lcd_yuv_options = 0;
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/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
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extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
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int width,
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int stride);
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extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
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int width,
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int stride,
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int x_screen, /* To align dither pattern */
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int y_screen);
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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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static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
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{
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lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
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lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
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lcd_write_reg(R_RAM_ADDR_SET, (ymin << 8) | (LCD_WIDTH-1 - xmin));
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}
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/* Performance function to blit a YUV bitmap directly to the LCD
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* src_x, src_y, width and height should be even
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* x, y, width and height have to be within LCD bounds
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*/
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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 char const * yuv_src[3];
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off_t z;
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lcd_busy = true;
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/* Sorry, but width and height must be >= 2 or else */
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width &= ~1;
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height >>= 1;
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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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lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_VIDEO);
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if (lcd_yuv_options & LCD_YUV_DITHER)
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{
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do
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{
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lcd_window_blit(y, x, y+1, x+width-1);
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/* Start write to GRAM */
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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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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y+=2;
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}
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while (--height > 0);
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}
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else
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{
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do
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{
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lcd_window_blit(y, x, y+1, x+width-1);
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/* Start write to GRAM */
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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lcd_write_yuv420_lines(yuv_src, width, stride);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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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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y+=2;
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}
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while (--height > 0);
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}
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lcd_busy = false;
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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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if (!display_on)
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return;
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lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
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lcd_busy = true;
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/* Set start position and window */
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lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
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lcd_write_cmd(R_WRITE_DATA_2_GRAM);
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lcd_write_data((fb_data*)lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT);
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lcd_busy = false;
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} /* lcd_update */
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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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const fb_data *ptr;
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int ymax, xmax;
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if (!display_on)
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return;
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xmax = x + width;
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if (xmax >= LCD_WIDTH)
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xmax = LCD_WIDTH - 1; /* Clip right */
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if (x < 0)
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x = 0; /* Clip left */
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if (x >= xmax)
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return; /* nothing left to do */
|
|
|
|
width = xmax - x + 1; /* Fix width */
|
|
|
|
ymax = y + height;
|
|
if (ymax >= LCD_HEIGHT)
|
|
ymax = LCD_HEIGHT - 1; /* Clip bottom */
|
|
if (y < 0)
|
|
y = 0; /* Clip top */
|
|
if (y >= ymax)
|
|
return; /* nothing left to do */
|
|
|
|
lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
|
|
lcd_busy = true;
|
|
lcd_window(x, y, xmax, ymax);
|
|
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
|
|
|
ptr = (fb_data*)&lcd_framebuffer[y][x];
|
|
|
|
do
|
|
{
|
|
lcd_write_data(ptr, width);
|
|
ptr += LCD_WIDTH;
|
|
}
|
|
while (++y <= ymax);
|
|
|
|
lcd_busy = false;
|
|
} /* lcd_update_rect */
|
|
|
|
/* writes one read pixel outside the visible area, needed for correct dbop reads */
|
|
bool lcd_button_support(void)
|
|
{
|
|
fb_data data = (0xf<<12);
|
|
|
|
if (lcd_busy)
|
|
return false;
|
|
|
|
lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
|
|
/* Set start position and window */
|
|
lcd_window(LCD_WIDTH+1, LCD_HEIGHT+1, LCD_WIDTH+2, LCD_HEIGHT+2);
|
|
|
|
lcd_write_cmd(R_WRITE_DATA_2_GRAM);
|
|
|
|
lcd_write_data(&data, 1);
|
|
return true;
|
|
}
|