31c0842cd6
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31389 a1c6a512-1295-4272-9138-f99709370657
293 lines
7.7 KiB
C
293 lines
7.7 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) 2011 by Tomasz Moń
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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 "string.h"
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#include "kernel.h"
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#include "system.h"
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#include "system-target.h"
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#include "lcd.h"
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#include "lcd-target.h"
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#include "avr-sansaconnect.h"
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extern bool lcd_on; /* lcd-memframe.c */
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#if defined(HAVE_LCD_SLEEP)
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void lcd_sleep(void)
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{
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if (lcd_on)
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{
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lcd_on = false;
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avr_hid_lcm_sleep();
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sleep(HZ/20);
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/* disable video encoder */
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bitclr16(&IO_VID_ENC_VMOD, 0x01);
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sleep(HZ/20);
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/* disable video encoder clock */
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bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC);
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}
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}
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void lcd_awake(void)
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{
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if (!lcd_on)
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{
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lcd_on = true;
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/* enable video encoder clock */
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bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC);
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/* enable video encoder */
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bitset16(&IO_VID_ENC_VMOD, 0x01);
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avr_hid_lcm_wake();
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send_event(LCD_EVENT_ACTIVATION, NULL);
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lcd_update();
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}
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}
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#endif
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void lcd_init_device(void)
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{
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unsigned int addr;
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/* Disable Video Encoder clock */
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bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC);
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/* configure GIO39, GIO34 as outputs */
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IO_GIO_DIR2 &= ~((1 << 7) /* GIO39 */ | (1 << 2) /* GIO34 */);
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IO_GIO_FSEL3 = (IO_GIO_FSEL3 & ~(0x300F)) |
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(0x1000) /* GIO39 - FIELD_VENC */ |
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(0x4); /* GIO34 - PWM1 (brightness control) */
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/* OSD Clock = VENC Clock /2,
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CCD clock PCLK,
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VENC Clock from PLLA */
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IO_CLK_SEL1 = 0x3;
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/* Set VENC Clock Division to 11
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OF bootloader sets division to 8, vmlinux sets it to 11 */
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IO_CLK_DIV3 = (IO_CLK_DIV3 & ~(0x1F00)) | 0xB00;
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/* Enable OSD clock */
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bitset16(&IO_CLK_MOD1, CLK_MOD1_OSD);
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/* magic values based on OF bootloader initialization */
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IO_VID_ENC_VMOD = 0x2010;
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IO_VID_ENC_VDPRO = 0x80;
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IO_VID_ENC_HSPLS = 0x4;
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IO_VID_ENC_HINT = 0x4B0;
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IO_VID_ENC_HSTART = 0x88;
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IO_VID_ENC_HVALID = 0x3C0;
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IO_VID_ENC_HSDLY = 0;
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IO_VID_ENC_VSPLS = 0x2;
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IO_VID_ENC_VINT = 0x152;
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IO_VID_ENC_VSTART = 0x6;
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IO_VID_ENC_VVALID = 0x140;
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IO_VID_ENC_VSDLY = 0;
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IO_VID_ENC_DCLKCTL = 0x3;
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IO_VID_ENC_DCLKPTN0 = 0xC;
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IO_VID_ENC_VDCTL = 0x6000;
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IO_VID_ENC_SYNCTL = 0x2;
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IO_VID_ENC_LCDOUT = 0x101;
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IO_VID_ENC_VMOD = 0x2011;
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/* Copy Rockbox frame buffer to the second framebuffer */
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lcd_update();
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avr_hid_sync();
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avr_hid_lcm_power_on();
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/* set framebuffer address - OF sets RAM start address to 0x1000000 */
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addr = ((int)FRAME-CONFIG_SDRAM_START)/32;
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IO_OSD_OSDWINADH = addr >> 16;
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IO_OSD_OSDWIN0ADL = addr & 0xFFFF;
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IO_OSD_BASEPX = 0x44;
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IO_OSD_BASEPY = 0x6;
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IO_OSD_OSDWIN0XP = 0;
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IO_OSD_OSDWIN0YP = 0;
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IO_OSD_OSDWIN0XL = LCD_WIDTH*2; /* OF bootloader sets 480 */
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IO_OSD_OSDWIN0YL = LCD_HEIGHT; /* OF bootloader sets 320 */
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IO_OSD_OSDWIN0OFST = 0xF;
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IO_OSD_OSDWINMD0 = 0x25FB;/* OF bootloader sets 25C3,
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vmlinux changes this to 0x25FB */
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IO_OSD_VIDWINMD = 0; /* disable video windows (OF sets 0x03) */
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IO_OSD_OSDWINMD1 = 0; /* disable OSD window 1 */
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/* Enable Video Encoder and OSD clocks */
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bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC | CLK_MOD1_OSD);
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/* Enable Video Encoder - RGB666, custom timing */
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IO_VID_ENC_VMOD = 0x2011;
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avr_hid_lcm_wake();
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lcd_on = true;
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}
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#ifdef LCD_USE_DMA
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static void dma_lcd_copy_buffer_rect(int x, int y, int width, int height)
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{
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char *dst, *src;
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/* Image buffer A is 4KW, every pixel is one Word */
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/* lines is maximum number of lines we can transfer in single run */
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int lines = 4096/width;
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if (lines > height)
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lines = height;
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/* Set source and destination addresses */
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dst = (char*)(FRAME + LCD_WIDTH*y + x);
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src = (char*)(&lcd_framebuffer[y][x]);
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/* Flush cache to memory */
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commit_dcache();
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/* Addresses are relative to start of SDRAM */
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src -= CONFIG_SDRAM_START;
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dst -= CONFIG_SDRAM_START;
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/* Enable Image Buffer clock */
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bitset16(&IO_CLK_MOD1, CLK_MOD1_IMGBUF);
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/* Use Image Buffer A for DMA */
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COP_BUF_MUX0 = (COP_BUF_MUX0 & 0xFFF0) | 0x0003;
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/* Setup buffer offsets and transfer width/height */
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COP_BUF_LOFST = width;
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COP_DMA_XNUM = width;
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COP_DMA_YNUM = lines;
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/* DMA: No byte SWAP, no transformation, data bus shift down 0 bit */
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COP_IMG_MODE &= 0xC0;
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/* Set the start address of buffer */
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COP_BUF_ADDR = 0x0000;
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/* Setup SDRAM stride */
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COP_SDEM_LOFST = LCD_WIDTH;
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do {
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int addr;
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addr = (int)src;
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addr >>= 1; /* Addresses are in 16-bit words */
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/* Setup the registers to initiate the read from SDRAM */
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COP_SDEM_ADDRH = addr >> 16;
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COP_SDEM_ADDRL = addr & 0xFFFF;
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/* Set direction and start */
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COP_DMA_CTRL = 0x0001;
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COP_DMA_CTRL |= 0x0002;
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/* Wait for read to finish */
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while (COP_DMA_CTRL & 0x02) {};
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addr = (int)dst;
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addr >>= 1;
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COP_SDEM_ADDRH = addr >> 16;
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COP_SDEM_ADDRL = addr & 0xFFFF;
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/* Set direction and start transfer */
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COP_DMA_CTRL = 0x0000;
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COP_DMA_CTRL |= 0x0002;
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/* Wait for the transfer to complete */
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while (COP_DMA_CTRL & 0x02) {};
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/* Decrease height, update pointers */
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src += (LCD_WIDTH << 1)*lines;
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dst += (LCD_WIDTH << 1)*lines;
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height -= lines;
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if (height < lines)
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{
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lines = height;
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COP_DMA_YNUM = height;
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}
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} while (height > 0);
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/* Disable Image Buffer clock */
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bitclr16(&IO_CLK_MOD1, CLK_MOD1_IMGBUF);
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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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__attribute__ ((section(".icode")));
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void lcd_update_rect(int x, int y, int width, int height)
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{
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if (!lcd_on)
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return;
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if ((width | height) < 0)
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return; /* Nothing left to do */
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if (x + width > LCD_WIDTH)
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width = LCD_WIDTH - x; /* Clip right */
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if (x < 0)
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width += x, x = 0; /* Clip left */
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if (y + height > LCD_HEIGHT)
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height = LCD_HEIGHT - y; /* Clip bottom */
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if (y < 0)
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height += y, y = 0; /* Clip top */
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dma_lcd_copy_buffer_rect(x, y, width, height);
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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) __attribute__ ((section(".icode")));
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void lcd_update(void)
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{
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if (!lcd_on)
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return;
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lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
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}
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#endif
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void lcd_set_contrast(int val) {
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(void) val;
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// TODO:
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}
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void lcd_set_invert_display(bool yesno) {
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(void) yesno;
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// TODO:
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}
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void lcd_set_flip(bool yesno) {
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(void) yesno;
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// TODO:
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}
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