533c29b2f2
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22635 a1c6a512-1295-4272-9138-f99709370657
483 lines
12 KiB
C
483 lines
12 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) 2007 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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#ifdef SANSA_C200V2
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/* button driver needs to know if a lcd operation is in progress */
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static bool lcd_busy = false;
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static unsigned short dbop_input = 0xFFFF;
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#endif
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/* Display status */
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#if MEMORYSIZE > 2
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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#endif
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static bool is_lcd_enabled = true;
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/* LCD command set for Samsung S6B33B2 */
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#define R_NOP 0x00
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#define R_OSCILLATION_MODE 0x02
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#define R_DRIVER_OUTPUT_MODE 0x10
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#define R_DCDC_SET 0x20
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#define R_BIAS_SET 0x22
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#define R_DCDC_CLOCK_DIV 0x24
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#define R_DCDC_AMP_ONOFF 0x26
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#define R_TEMP_COMPENSATION 0x28
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#define R_CONTRAST_CONTROL1 0x2a
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#define R_CONTRAST_CONTROL2 0x2b
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#define R_STANDBY_OFF 0x2c
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#define R_STANDBY_ON 0x2d
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#define R_DDRAM_BURST_OFF 0x2e
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#define R_DDRAM_BURST_ON 0x2f
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#define R_ADDRESSING_MODE 0x30
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#define R_ROW_VECTOR_MODE 0x32
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#define R_N_LINE_INVERSION 0x34
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#define R_FRAME_FREQ_CONTROL 0x36
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#define R_RED_PALETTE 0x38
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#define R_GREEN_PALETTE 0x3a
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#define R_BLUE_PALETTE 0x3c
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#define R_ENTRY_MODE 0x40
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#define R_X_ADDR_AREA 0x42
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#define R_Y_ADDR_AREA 0x43
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#define R_RAM_SKIP_AREA 0x45
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#define R_DISPLAY_OFF 0x50
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#define R_DISPLAY_ON 0x51
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#define R_SPEC_DISPLAY_PATTERN 0x53
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#define R_PARTIAL_DISPLAY_MODE 0x55
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#define R_PARTIAL_START_LINE 0x56
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#define R_PARTIAL_END_LINE 0x57
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#define R_AREA_SCROLL_MODE 0x59
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#define R_SCROLL_START_LINE 0x5a
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#define R_DATA_FORMAT_SELECT 0x60
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#if defined(SANSA_C200)
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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 (LCD1_CONTROL & LCD1_BUSY_MASK);
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}
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/* send LCD data */
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static void lcd_send_pixel(const fb_data data)
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{
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lcd_wait_write();
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LCD1_DATA = data >> 8;
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lcd_wait_write();
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LCD1_DATA = data & 0xff;
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}
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inline void lcd_write_data(const fb_data *data, int width)
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{
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do {
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lcd_send_pixel(*data++);
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} while(--width);
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}
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/* send LCD command */
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static void lcd_send_command(unsigned char cmd, unsigned char arg)
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{
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lcd_wait_write();
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LCD1_CMD = cmd;
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/* if the argument is 0, we send a NOP (= 0) command */
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lcd_wait_write();
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LCD1_CMD = arg;
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}
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static inline void c200v1_lcd_init(void)
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{
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/* This is from the c200 of bootloader beginning at offset 0xbbf4 */
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outl(inl(0x70000010) & ~0xfc000000, 0x70000010);
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outl(inl(0x70000010), 0x70000010);
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DEV_INIT2 &= ~0x400;
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udelay(10000);
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LCD1_CONTROL &= ~0x4;
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udelay(15);
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LCD1_CONTROL |= 0x4;
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udelay(10);
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LCD1_CONTROL = 0x0084; /* bits (9,10) = 00 -> fastest setting */
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udelay(10000);
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}
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#define lcd_delay(delay) udelay((delay) * 1000)
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#elif defined(SANSA_C200V2)
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static inline void lcd_delay(int delay)
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{ //TUNEME : delay is in milliseconds
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delay <<= 14;
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while(delay--) ;
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}
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/* send LCD data */
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void lcd_write_data(const fb_data *data, int width)
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{
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do {
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DBOP_DOUT = *data << 8 | *data >> 8;
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data++;
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/* Wait if push fifo is full */
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while ((DBOP_STAT & (1<<6)) != 0);
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} while(--width);
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/* While push fifo is not empty */
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while ((DBOP_STAT & (1<<10)) == 0);
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}
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/* send LCD command */
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static void lcd_send_command(unsigned char cmd, unsigned char val)
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{
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DBOP_TIMPOL_23 = 0xa167006e;
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DBOP_DOUT = cmd | val << 8;
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while ((DBOP_STAT & (1<<10)) == 0);
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DBOP_TIMPOL_23 = 0xa167e06f;
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}
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static inline void as3525_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 = 0x40008;
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GPIOB_AFSEL = 0xc;
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GPIOC_AFSEL = 0xff;
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DBOP_TIMPOL_23 = 0x6006e;
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DBOP_CTRL = 0x52008;
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DBOP_TIMPOL_01 = 0x6e167;
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DBOP_TIMPOL_23 = 0xa167e06f;
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lcd_delay(20);
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}
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static unsigned short lcd_dbop_read(void)
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{
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unsigned int dbop_ctrl_old = DBOP_CTRL;
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unsigned int dbop_timpol23_old = DBOP_TIMPOL_23;
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unsigned int value;
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/* make sure that the DBOP FIFO is empty */
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while ((DBOP_STAT & (1<<10)) == 0);
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/* write DBOP_DOUT to pre-charge DBOP data lines with a high level */
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DBOP_TIMPOL_23 = 0xe167e167; /* no strobe towards lcd */
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DBOP_CTRL = (1 << 16) | /* enw=1 (enable write) */
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(1 << 12); /* ow=1 (16-bit data width) */
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DBOP_DOUT = 0xFFFF; /* all pins high */
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while ((DBOP_STAT & (1<<10)) == 0);
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/* perform a DBOP read */
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DBOP_CTRL = (1 << 15) | /* strd=1 (start read) */
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(1 << 12) | /* ow=1 (16-bit data width) */
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(31 << 0); /* rs_t=31 (read DBOP at end of cycle) */
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while ((DBOP_STAT & (1<<16)) == 0);
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value = DBOP_DIN;
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/* restore previous values */
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DBOP_TIMPOL_23 = dbop_timpol23_old;
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DBOP_CTRL = dbop_ctrl_old;
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return value;
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}
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/* get the DBOP input value, either directly or cached if DBOP is busy */
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unsigned short int lcd_dbop_input(void)
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{
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if (!lcd_busy) {
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dbop_input = lcd_dbop_read();
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}
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return dbop_input;
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}
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#endif
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/* LCD init */
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void lcd_init_device(void)
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{
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#if defined(SANSA_C200)
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c200v1_lcd_init();
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#elif defined(SANSA_C200V2)
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as3525_dbop_init();
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#endif
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lcd_send_command(R_STANDBY_OFF, 0);
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lcd_delay(20);
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lcd_send_command(R_OSCILLATION_MODE, 0x01);
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lcd_delay(20);
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lcd_send_command(R_DCDC_AMP_ONOFF, 0x01);
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lcd_delay(20);
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lcd_send_command(R_DCDC_AMP_ONOFF, 0x09);
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lcd_delay(20);
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lcd_send_command(R_DCDC_AMP_ONOFF, 0x0b);
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lcd_delay(20);
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lcd_send_command(R_DCDC_AMP_ONOFF, 0x0f);
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lcd_delay(20);
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lcd_send_command(R_DRIVER_OUTPUT_MODE, 0x07);
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lcd_send_command(R_DCDC_SET, 0x03);
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lcd_send_command(R_DCDC_CLOCK_DIV, 0x03);
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lcd_send_command(R_TEMP_COMPENSATION, 0x01);
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lcd_send_command(R_CONTRAST_CONTROL1, 0x55);
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lcd_send_command(R_ADDRESSING_MODE, 0x10);
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lcd_send_command(R_ROW_VECTOR_MODE, 0x0e);
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lcd_send_command(R_N_LINE_INVERSION, 0x0d);
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lcd_send_command(R_FRAME_FREQ_CONTROL, 0);
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lcd_send_command(R_ENTRY_MODE, 0x82);
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/* vertical dimensions */
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lcd_send_command(R_Y_ADDR_AREA, 0x1a); /* y1 + 0x1a */
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lcd_send_command(LCD_HEIGHT - 1 + 0x1a, 0); /* y2 + 0x1a */
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/* horizontal dimensions */
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lcd_send_command(R_X_ADDR_AREA, 0); /* x1 */
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lcd_send_command(LCD_WIDTH - 1, 0); /* x2 */
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lcd_delay(100);
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lcd_send_command(R_DISPLAY_ON, 0);
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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 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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#ifdef SANSA_C200V2
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lcd_busy = true;
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#endif
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lcd_send_command(R_CONTRAST_CONTROL1, val);
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#ifdef SANSA_C200V2
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lcd_busy = false;
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#endif
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}
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void lcd_set_invert_display(bool yesno)
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{
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/* TODO: Implement lcd_set_invert_display() */
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(void)yesno;
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}
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#if defined(HAVE_LCD_ENABLE)
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void lcd_enable(bool yesno)
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{
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if (yesno == is_lcd_enabled)
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return;
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#ifdef SANSA_C200V2
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lcd_busy = true;
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#endif
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if ((is_lcd_enabled = yesno))
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{
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lcd_send_command(R_STANDBY_OFF, 0);
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lcd_send_command(R_DISPLAY_ON, 0);
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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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lcd_send_command(R_STANDBY_ON, 0);
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}
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#ifdef SANSA_C200V2
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lcd_busy = false;
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#endif
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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 is_lcd_enabled;
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}
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#endif
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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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#ifdef SANSA_C200V2
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lcd_busy = true;
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#endif
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lcd_send_command(R_DRIVER_OUTPUT_MODE, yesno ? 0x02 : 0x07);
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#ifdef SANSA_C200V2
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lcd_busy = false;
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#endif
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}
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/*** update functions ***/
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#if MEMORYSIZE > 2
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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,
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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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/* 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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y += 0x1a;
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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_send_command(R_ENTRY_MODE, 0x80);
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lcd_send_command(R_X_ADDR_AREA, x);
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lcd_send_command(x + width - 1, 0);
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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_command(R_Y_ADDR_AREA, y);
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lcd_send_command(y + 1, 0);
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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_command(R_Y_ADDR_AREA, y);
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lcd_send_command(y + 1, 0);
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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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}
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#endif /* MEMORYSIZE > 2 */
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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 = &lcd_framebuffer[y][x];
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#ifdef SANSA_C200V2
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lcd_busy = true;
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/* perform a dbop read before doing a potentially lengthy lcd update */
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dbop_input = lcd_dbop_read();
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#endif
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if (width <= 1) {
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/* The X end address must be larger than the X start address, so we
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* switch to vertical mode for single column updates and set the
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* window width to 2 */
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lcd_send_command(R_ENTRY_MODE, 0x80);
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lcd_send_command(R_X_ADDR_AREA, x);
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lcd_send_command(x + 1, 0);
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} else {
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lcd_send_command(R_ENTRY_MODE, 0x82);
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lcd_send_command(R_X_ADDR_AREA, x);
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lcd_send_command(x + width - 1, 0);
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}
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lcd_send_command(R_Y_ADDR_AREA, y + 0x1a);
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lcd_send_command(y + height - 1 + 0x1a, 0);
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do {
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lcd_write_data(addr, width);
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addr += LCD_WIDTH;
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} while (--height > 0);
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#ifdef SANSA_C200V2
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lcd_busy = false;
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#endif
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}
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