/* * AT91SAM9261 LCD Controller * * (C) Copyright 2005-2006 * M. Amine SAYA, ATMEL Rousset, France. * * * (C) Copyright 2001-2002 * Wolfgang Denk, DENX Software Engineering -- wd@denx.de * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA *//************************************************************************//* ** HEADER FILES							*//************************************************************************/#include <config.h>#include <common.h>#include <version.h>#include <stdarg.h>#include <linux/types.h>#include <devices.h>#undef  CONFIG_LCD_LOGO#include <lcd.h>#include "lcd_lut.h"#ifdef CONFIG_LCD#define LCD_BPP  LCD_COLOR8/* #define DEBUG */#define FB_SYNC_HOR_HIGH_ACT	1	/* horizontal sync high active	*/#define FB_SYNC_VERT_HIGH_ACT	2	/* vertical sync high active	*//* More or less configurable parameters for LCDC controller*/#define SIDSAFB_FIFO_SIZE		512#define SIDSAFB_DMA_BURST_LEN		16#define SIDSAFB_CRST_VAL                0xc8   // 0xdaAT91PS_SYS  AT91_SYS = (AT91PS_SYS)AT91C_BASE_SYS;#ifndef LCD_640x480/* 240x320x16 @ 61 Hz */	//linux_yu@hotmail.comvidinfo_t panel_info = {	vl_col:		240,	vl_row:		320,	vl_width:	64,	vl_height:	86,	vl_pixclock:    4965000,	vl_hsp:		0, //	FB_SYNC_HOR_HIGH_ACT,	vl_vsp:		0, //	FB_SYNC_VERT_HIGH_ACT,	vl_bpix:	3,	vl_tft:		1,	/* Horizontal control Timing */	vl_hpw:		31,	//su.2006.05.16	vl_blw:		13,	vl_elw:		13,	/* Vertical control Timing */	vl_vpw:		3,	vl_bfw:		3,	vl_efw:		3,};#else/* 640x480x16 @ 61 Hz */vidinfo_t panel_info = {	vl_col:		640,	vl_row:		480,	vl_width:	176,	vl_height:	127,	vl_pixclock:    25175000,	vl_hsp:		FB_SYNC_HOR_HIGH_ACT,	vl_vsp:		FB_SYNC_VERT_HIGH_ACT,	vl_bpix:	3,	vl_tft:		1,	/* Horizontal control Timing */	vl_hpw:		95,	//su.2006.05.16	vl_blw:		47,	vl_elw:		15,	/* Vertical control Timing */	vl_vpw:		1,	vl_bfw:		32,	vl_efw:		9,};#endif/*----------------------------------------------------------------------*/void lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue);void lcd_ctrl_init (void *lcdbase);void lcd_enable	(void);static void lcd_init_lut(void);int lcd_line_length;int lcd_color_fg;int lcd_color_bg;void *lcd_base;			/* Start of framebuffer memory	*/void *lcd_console_address;		/* Start of console buffer	*/short console_col;short console_row;/************************************************************************/static void AT91F_LCDC_TFT_CfgPIO (void){  AT91_SYS->PIOB_PDR = (AT91C_PB0_LCDVSYNC| AT91C_PB1_LCDHSYNC | AT91C_PB2_LCDDOTCK | AT91C_PB3_LCDDEN | AT91C_PB4_LCDCC |			AT91C_PB7_LCDD2 | AT91C_PB8_LCDD3 | AT91C_PB9_LCDD4 |			AT91C_PB10_LCDD5 | AT91C_PB11_LCDD6 | AT91C_PB12_LCDD7 |			AT91C_PB15_LCDD10 | AT91C_PB16_LCDD11 | AT91C_PB17_LCDD12 |			AT91C_PB18_LCDD13 | AT91C_PB19_LCDD14 | AT91C_PB20_LCDD15 |			AT91C_PB23_LCDD18 | AT91C_PB24_LCDD19 | AT91C_PB25_LCDD20 |			AT91C_PB26_LCDD21 | AT91C_PB27_LCDD22 | AT91C_PB28_LCDD23);  AT91_SYS->PIOB_BSR = (AT91C_PB23_LCDD18 | AT91C_PB24_LCDD19 | AT91C_PB25_LCDD20 |			AT91C_PB26_LCDD21 | AT91C_PB27_LCDD22 | AT91C_PB28_LCDD23);  // Configure PB3 in pio to enable LCD  AT91_SYS->PIOA_PER = AT91C_PIO_PA14;	//su.2006.05.22  AT91_SYS->PIOA_OER = AT91C_PIO_PA14;  AT91_SYS->PIOA_CODR = AT91C_PIO_PA14;}static void lcd_init_lut(void){	unsigned int i;	for(i =0; i <256; i++) {		panel_info.controller.lcdc->LCDC_LUT_ENTRY[i] = 		   ((rgbPalette[i].red) >> 3 |		   ((rgbPalette[i].green & 0xf8) << 2) |		   ((rgbPalette[i].blue & 0xf8) << 7));	}}void lcd_setcolreg (ushort regno, ushort red, 		    ushort green, ushort blue){  panel_info.controller.lcdc->LCDC_LUT_ENTRY[regno] = ((red >> 3) |						       ((green & 0xf8) << 2) |						       ((blue & 0xf8) << 7));}void lcd_ctrl_init (void *lcdbase){	unsigned long value;	AT91F_LCDC_TFT_CfgPIO();	/* Enable HCLOCK in PMC */	AT91_SYS->PMC_SCER = AT91C_PMC_HCK1;	/* Init controller field in panel_info */	panel_info.controller.lcdc = (AT91PS_LCDC) AT91C_BASE_LCDC;	panel_info.controller.frame_buffer = (unsigned long) lcdbase;	/* Turn off the LCD controller and the DMA controller */	panel_info.controller.lcdc->LCDC_PWRCON = 0x0C;	panel_info.controller.lcdc->LCDC_DMACON = 0;		// Reset LCDC DMA	panel_info.controller.lcdc->LCDC_DMACON = AT91C_LCDC_DMARST;	/* ...set frame size and burst length = 8 words (?) */	value = ((unsigned int)panel_info.vl_row * (unsigned int)panel_info.vl_col * (unsigned int)NBITS(panel_info.vl_bpix)) / 32;	value |= ((512 - 1) << 24);	panel_info.controller.lcdc->LCDC_FRMCFG = value;	/* Set pixel clock */	value = AT91C_MASTER_CLOCK / panel_info.vl_pixclock;	if (AT91C_MASTER_CLOCK % panel_info.vl_pixclock)	  value++;	value = (value / 2) - 1;	if (!value) {		panel_info.controller.lcdc->LCDC_LCDCON1 = AT91C_LCDC_BYPASS;	} else		panel_info.controller.lcdc->LCDC_LCDCON1 = value << 12;	/* Initialize control register 2 */	if (panel_info.vl_tft)	  value = ( AT91C_LCDC_MEMOR_LITTLEIND | AT91C_LCDC_DISTYPE_TFT | AT91C_LCDC_CLKMOD);	else	  value = ( AT91C_LCDC_MEMOR_LITTLEIND | AT91C_LCDC_CLKMOD);	if (!((unsigned int)panel_info.vl_hsp & FB_SYNC_HOR_HIGH_ACT))		value |= 1 << 10;	/* INVLINE */	if (!((unsigned int)panel_info.vl_vsp & FB_SYNC_VERT_HIGH_ACT))		value |= 1 << 9;	/* INVFRAME */	value |= (unsigned int)(panel_info.vl_bpix << 5);			/*	switch (TFT_Panel_Info.bpp) {		case 1:	value |= 0 << 5; break;		case 2: value |= 1 << 5; break;		case 4: value |= 2 << 5; break;		case 8: 			value |= 3 << 5; 			lcd_init_lut();					break;		case 16: value |= 4 << 5; break;		case 24: value |= 5 << 5; break;		case 32: value |= 6 << 5; break;		default : break;	}	*/	panel_info.controller.lcdc->LCDC_LCDCON2 = value;	//lcd_init_lut();		/* Vertical timing */	value = (unsigned int)((panel_info.vl_vpw - 1) << 16);	value |= (unsigned int)(panel_info.vl_bfw << 8);	value |= (unsigned int)panel_info.vl_efw;	panel_info.controller.lcdc->LCDC_TIM1 = value;	/* Horizontal timing */	value = (unsigned int)((panel_info.vl_elw - 1) << 21);	value |= (unsigned int)((panel_info.vl_hpw - 1) << 8);	value |= (unsigned int)(panel_info.vl_blw - 1);	panel_info.controller.lcdc->LCDC_TIM2 = value;	value = (unsigned int)((panel_info.vl_col - 1) << 21);	value |= (unsigned int)(panel_info.vl_row - 1);	panel_info.controller.lcdc->LCDC_LCDFRCFG = value;	/* FIFO Threshold: Use formula from data sheet */	value = SIDSAFB_FIFO_SIZE - (2 * SIDSAFB_DMA_BURST_LEN + 3);	//value = 512;	panel_info.controller.lcdc->LCDC_FIFO = value;	/* Toggle LCD_MODE every frame */	//value = AT91C_LCDC_MMODE | 4;	value = 0;	panel_info.controller.lcdc->LCDC_MVAL = value;	/* Disable all interrupts */	panel_info.controller.lcdc->LCDC_IDR = ~0UL;	// Set contrast	value = AT91C_LCDC_PS_DIVIDEDBYEIGHT | AT91C_LCDC_POL_POSITIVEPULSE | AT91C_LCDC_ENA_PWMGEMENABLED;	panel_info.controller.lcdc->LCDC_CTRSTCON = value;	panel_info.controller.lcdc->LCDC_CTRSTVAL = 0xDA; //SIDSAFB_CRST_VAL;	/* ...wait for DMA engine to become idle... *///	while ((panel_info.controller.lcdc->LCDC_DMACON & AT91C_LCDC_DMABUSY)== 0);	panel_info.controller.lcdc->LCDC_BA1 = (unsigned int)lcdbase;	panel_info.controller.lcdc->LCDC_FRMCFG = (15 << 24) + ((unsigned int)panel_info.vl_col * (unsigned int)panel_info.vl_row * (unsigned int)NBITS(panel_info.vl_bpix)) / 32;	panel_info.controller.lcdc->LCDC_DMACON    = AT91C_LCDC_DMAEN;	panel_info.controller.lcdc->LCDC_PWRCON    = AT91C_LCDC_PWR | 0x0c;}/*----------------------------------------------------------------------*/void lcd_enable (void){}/*----------------------------------------------------------------------*/static void lcd_disable (void){}/*----------------------------------------------------------------------*/ulong calc_fbsize (void){	ulong size;	int line_length = ((unsigned int)panel_info.vl_col * (unsigned int)NBITS(panel_info.vl_bpix)) / 8;	size = line_length * (unsigned int)panel_info.vl_row;	size += PAGE_SIZE;	return size;}#endif /* CONFIG_LCD */