434 lines
10 KiB
C
434 lines
10 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) 2008 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 <sys/types.h>
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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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/* The LCD registers appear to match controllers from Leadis Technology,
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either the LDS176 (132x132 4k) or the LDS186 (128x160 65k).
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These defines are from the LDS176 (I couldn't find the LDS186 datasheet. */
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#define NOP 0x00
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#define SWRESET 0x01
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#define BSTROFF 0x02
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#define BSTRON 0x03
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#define RDDID 0x04
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#define RDDST 0x09
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#define SLPIN 0x10
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#define SLPOUT 0x11
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#define PTLON 0x12
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#define NORON 0x13
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#define INVOFF 0x20
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#define INVON 0x21
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#define APOFF 0x22
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#define APON 0x23
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#define WRCNTR 0x25
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#define DISPOFF 0x28
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#define DISPON 0x29
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#define CASET 0x2a
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#define RASET 0x2b
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#define RAMWR 0x2c
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#define RAMRD 0x2e
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#define RGBSET 0x2d
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#define PTLAR 0x30
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#define SCRLAR 0x33
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#define TEOFF 0x34
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#define TEON 0x35
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#define MADCTR 0x36
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#define VSCSAD 0x37
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#define IDMOFF 0x38
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#define IDMON 0x39
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#define COLMOD 0x3a
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#define RDID1 0xda
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#define RDID2 0xdb
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#define RDID3 0xdc
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#define CLKINT 0xb0
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#define CLKEXT 0xb1
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#define FRMSEL 0xb4
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#define FRM8SEL 0xb5
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#define TMPRNG 0xb6
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#define TMPHIS 0xb7
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#define TMPREAD 0xb8
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#define DISCTR 0xba
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#define EPVOL 0xbb
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#define EPWRIN 0xd1
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#define EPWROUT 0xd0
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#define RDEV 0xd4
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#define RDRR 0xd5
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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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static unsigned mad_ctrl = 0;
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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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int i = 0;
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while (LCD2_PORT & LCD2_BUSY_MASK)
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{
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if (i < 2000)
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i++;
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else
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LCD2_PORT &= ~LCD2_BUSY_MASK;
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}
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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_cmd(unsigned cmd)
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{
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lcd_wait_write();
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LCD2_PORT = LCD2_CMD_MASK | (cmd & 0xff);
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lcd_wait_write();
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}
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static inline void lcd_send_pixel(unsigned pixel)
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{
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lcd_send_data(pixel >> 8);
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lcd_send_data(pixel);
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}
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void lcd_init_device(void)
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{
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#if 0
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/* this sequence from the OF bootloader */
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DEV_EN2 |= 0x2000;
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outl(inl(0x70000014) & ~0xf000000, 0x70000014);
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outl(inl(0x70000014) | 0xa000000, 0x70000014);
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DEV_INIT1 &= 0xc000;
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DEV_INIT1 |= 0x8000;
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MLCD_SCLK_DIV &= ~0x800;
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CLCD_CLOCK_SRC |= 0xc0000000;
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DEV_INIT2 &= ~0x400;
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outl(inl(0x7000002c) | ((1<<4)<<24), 0x7000002c);
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DEV_INIT2 &= ~((1<<4)<<24);
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udelay(10000);
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DEV_INIT2 |= ((1<<4)<<24);
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outl(0x220, 0x70008a00);
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outl(0x1f00, 0x70008a04);
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LCD2_BLOCK_CTRL = 0x10008080;
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LCD2_BLOCK_CONFIG = 0xF00000;
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/* lcd power */
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GPIOJ_ENABLE |= 0x4;
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GPIOJ_OUTPUT_VAL |= 0x4;
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GPIOJ_OUTPUT_EN |= 0x4;
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lcd_send_cmd(SWRESET);
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udelay(10000);
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lcd_send_cmd(WRCNTR);
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lcd_send_data(0x3f);
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lcd_send_cmd(SLPOUT);
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udelay(120000);
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lcd_send_cmd(INVOFF);
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lcd_send_cmd(IDMOFF);
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lcd_send_cmd(NORON);
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lcd_send_cmd(FRMSEL);
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lcd_send_data(0x2);
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lcd_send_data(0x6);
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lcd_send_data(0x8);
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lcd_send_data(0xd);
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lcd_send_cmd(FRM8SEL);
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lcd_send_data(0x2);
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lcd_send_data(0x6);
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lcd_send_data(0x8);
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lcd_send_data(0xd);
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lcd_send_cmd(TMPRNG);
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lcd_send_data(0x19);
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lcd_send_data(0x23);
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lcd_send_data(0x2d);
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lcd_send_cmd(TMPHIS);
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lcd_send_data(0x5);
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lcd_send_cmd(DISCTR);
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lcd_send_data(0x7);
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lcd_send_data(0x18);
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lcd_send_cmd(MADCTR);
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lcd_send_data(0);
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mad_ctrl = 0;
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lcd_send_cmd(COLMOD);
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lcd_send_data(0x5);
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lcd_send_cmd(RGBSET);
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lcd_send_data(0x1);
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lcd_send_data(0x2);
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lcd_send_data(0x3);
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lcd_send_data(0x4);
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lcd_send_data(0x5);
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lcd_send_data(0x6);
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lcd_send_data(0x7);
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lcd_send_data(0x8);
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lcd_send_data(0x9);
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lcd_send_data(0xa);
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lcd_send_data(0xb);
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lcd_send_data(0xc);
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lcd_send_data(0xd);
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lcd_send_data(0xe);
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lcd_send_data(0xf);
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lcd_send_data(0x10);
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lcd_send_data(0x11);
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lcd_send_data(0x12);
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lcd_send_data(0x13);
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lcd_send_data(0x14);
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lcd_send_data(0x15);
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lcd_send_data(0x16);
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lcd_send_data(0x17);
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lcd_send_data(0x18);
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lcd_send_data(0x19);
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lcd_send_data(0x1a);
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lcd_send_data(0x1b);
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lcd_send_data(0x1c);
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lcd_send_data(0x1d);
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lcd_send_data(0x1e);
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lcd_send_data(0x1f);
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lcd_send_data(0x20);
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lcd_send_data(0x21);
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lcd_send_data(0x22);
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lcd_send_data(0x23);
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lcd_send_data(0x24);
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lcd_send_data(0x25);
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lcd_send_data(0x26);
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lcd_send_data(0x27);
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lcd_send_data(0x28);
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lcd_send_data(0x29);
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lcd_send_data(0x2a);
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lcd_send_data(0x2b);
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lcd_send_data(0x2c);
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lcd_send_data(0x2d);
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lcd_send_data(0x2e);
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lcd_send_data(0x2f);
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lcd_send_data(0x30);
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lcd_send_cmd(DISPON);
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#endif
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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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/* from the OF */
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lcd_send_cmd(SLPOUT);
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sleep(HZ/5); /* 200ms */
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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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/* from the OF */
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lcd_send_cmd(SLPIN);
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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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lcd_send_cmd(WRCNTR);
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lcd_send_data(val);
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}
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void lcd_set_invert_display(bool yesno)
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{
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if (yesno)
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lcd_send_cmd(INVON);
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else
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lcd_send_cmd(INVOFF);
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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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if (yesno)
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mad_ctrl |= ((1<<7) | (1<<6)); /* flip */
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else
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mad_ctrl &= ~((1<<7) | (1<<6)); /* normal */
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lcd_send_cmd(MADCTR);
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lcd_send_data(mad_ctrl);
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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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/* 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, 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, int stride,
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int x_screen, int y_screen);
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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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unsigned char const * yuv_src[3];
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off_t z;
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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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/* Set vertical address mode */
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lcd_send_cmd(MADCTR);
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lcd_send_data(mad_ctrl | (1<<5));
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lcd_send_cmd(RASET);
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lcd_send_data(x);
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lcd_send_data(x + width - 1);
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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_send_cmd(CASET);
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lcd_send_data(y);
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lcd_send_data(y + 1);
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lcd_send_cmd(RAMWR);
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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_send_cmd(CASET);
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lcd_send_data(y);
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lcd_send_data(y + 1);
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lcd_send_cmd(RAMWR);
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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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/* Restore the address mode */
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lcd_send_cmd(MADCTR);
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lcd_send_data(mad_ctrl);
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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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const fb_data *addr;
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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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addr = FBADDR(x,y);
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lcd_send_cmd(CASET);
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lcd_send_data(x);
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lcd_send_data(x + width - 1);
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lcd_send_cmd(RASET);
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lcd_send_data(y);
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lcd_send_data(y + height - 1);
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lcd_send_cmd(RAMWR);
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do {
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int w = width;
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do {
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lcd_send_pixel(*addr++);
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} while (--w > 0);
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addr += LCD_WIDTH - width;
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} while (--height > 0);
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}
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