pxafb.c.svn-base

u-boot for S3c2443 processor

/*
 * (C) Copyright 2001-2002
 * Wolfgang Denk, DENX Software Engineering -- [e-mail]
 *
 * 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							*/
/************************************************************************/

#define DEBUG 1
#include <config.h>
#include <common.h>
#include <version.h>
#include <stdarg.h>
#include <lcdvideo.h>
#include <linux/types.h>
#include <devices.h>
#include <asm/arch/pxa-regs.h>

#ifdef CONFIG_LCD

/************************************************************************/
/* ** CONFIG STUFF -- should be moved to board config file		*/
/************************************************************************/
#ifndef CONFIG_EDT32F10
#define CONFIG_LCD_LOGO
#define LCD_INFO		/* Display Logo, (C) and system info	*/
#endif

#ifdef CONFIG_V37
#undef CONFIG_LCD_LOGO
#undef LCD_INFO
#endif

#undef CONFIG_LCD_LOGO

#define LCD_TEST_PATTERN
/* #define LCD_TEST_PATTERN */	/* color backgnd for frame/color adjust */
/* #define CFG_INVERT_COLORS */	/* Not needed - adjust vl_dp instead 	*/
/************************************************************************/

/************************************************************************/
/* ** FONT AND LOGO DATA						*/
/************************************************************************/

#include <video_font.h>		/* Get font data, width and height	*/

#ifdef CONFIG_LCD_LOGO
# include <bmp_nexus.h>		/* Get logo data, width and height	*/
#endif

/************************************************************************/
/************************************************************************/

/*
 *  Information about displays we are using.  This is for configuring
 *  the LCD controller and memory allocation.  Someone has to know what
 *  is connected, as we can't autodetect anything.
 */
#define CFG_HIGH	0	/* Pins are active high */
#define CFG_LOW		1	/* Pins are active low */

/* PXA LCD DMA descriptor */
struct pxafb_dma_descriptor {
	u_long fdadr;
	u_long fsadr;
	u_long fidr;
	u_long ldcmd;
};

/* PXA LCD info */
struct pxafb_info {

	/* Misc registers */
	u_long reg_lccr3;
	u_long reg_lccr2;
	u_long reg_lccr1;
	u_long reg_lccr0;
	u_long fdadr0;
	u_long fdadr1;

	/* DMA descriptors */
	struct pxafb_dma_descriptor * 	dmadesc_fblow;
	struct pxafb_dma_descriptor * 	dmadesc_fbhigh;
	struct pxafb_dma_descriptor *	dmadesc_palette;

	u_long		screen;		/* physical address of frame buffer */
	u_long		palette;	/* physical address of palette memory */
	u_int		palette_size;
};

typedef struct vidinfo {
    ushort	vl_col;		/* Number of columns (i.e. 640) */
    ushort	vl_row;		/* Number of rows (i.e. 480) */
    ushort	vl_width;	/* Width of display area in millimeters */
    ushort	vl_height;	/* Height of display area in millimeters */

    /* LCD configuration register.
    */
    u_char	vl_clkp;	/* Clock polarity */
    u_char	vl_oep;		/* Output Enable polarity */
    u_char	vl_hsp;		/* Horizontal Sync polarity */
    u_char	vl_vsp;		/* Vertical Sync polarity */
    u_char	vl_dp;		/* Data polarity */
    u_char	vl_bpix;	/* Bits per pixel, 0 = 1, 1 = 2, 2 = 4, 3 = 8, 4 = 16 */
    u_char	vl_lbw;		/* LCD Bus width, 0 = 4, 1 = 8 */
    u_char	vl_splt;	/* Split display, 0 = single-scan, 1 = dual-scan */
    u_char	vl_clor;	/* Color, 0 = mono, 1 = color */
    u_char	vl_tft;		/* 0 = passive, 1 = TFT */

    /* Horizontal control register.  Timing from data sheet.
    */
    ushort	vl_hpw;		/* Horz sync pulse width */
    u_char	vl_blw;		/* Wait before of line */
    u_char	vl_elw;		/* Wait end of line */

    /* Vertical control register.
    */
    u_char	vl_vpw;		/* Vertical sync pulse width */
    u_char	vl_bfw;		/* Wait before of frame */
    u_char	vl_efw;		/* Wait end of frame */

    u_char	vl_lcdac;	/* LCD AC timing */

    /* PXA LCD controller params
     */
    struct pxafb_info pxa;

} vidinfo_t;

#define LCD_MONOCHROME	0
#define LCD_COLOR2	1
#define LCD_COLOR4	2
#define LCD_COLOR8	3
#define LCD_COLOR16	4

/*----------------------------------------------------------------------*/
#define CONFIG_PXA_VGA
#ifdef CONFIG_PXA_VGA
/*
 *  LCD outputs connected to a video DAC
 */

#define LCD_BPP	LCD_COLOR8

/* you have to set lccr0 and lccr3 (including pcd) */
#define REG_LCCR0	0x003008f8
#define REG_LCCR3	0x0300FF01

/* 640x480x16 @ 61 Hz */
static vidinfo_t panel_info = {
	vl_col: 	640,
	vl_row: 	480,
	vl_width: 	640,
	vl_height: 	480,
	vl_clkp: 	CFG_HIGH,
	vl_oep: 	CFG_HIGH,
	vl_hsp: 	CFG_HIGH,
	vl_vsp: 	CFG_HIGH,
	vl_dp: 		CFG_HIGH,
	vl_bpix: 	LCD_BPP,
	vl_lbw: 	0,
	vl_splt: 	0,
	vl_clor: 	0,
	vl_lcdac: 	0,
	vl_tft: 	1,
	vl_hpw: 	40,
	vl_blw: 	56,
	vl_elw: 	56,
	vl_vpw: 	20,
	vl_bfw: 	8,
	vl_efw: 	8,
};
#endif /* CONFIG_PXA_VIDEO */

#ifdef CONFIG_SHARP_LM8V31

#define LCD_BPP	LCD_COLOR8
#define LCD_INVERT_COLORS	/* Needed for colors to be correct, but why? */

/* you have to set lccr0 and lccr3 (including pcd) */
#define REG_LCCR0	0x0030087C
#define REG_LCCR3	0x0340FF08

static vidinfo_t panel_info = {
	vl_col: 	640,
	vl_row: 	480,
	vl_width: 	157,
	vl_height: 	118,
	vl_clkp: 	CFG_HIGH,
	vl_oep: 	CFG_HIGH,
	vl_hsp: 	CFG_HIGH,
	vl_vsp: 	CFG_HIGH,
	vl_dp: 		CFG_HIGH,
	vl_bpix: 	LCD_BPP,
	vl_lbw: 	0,
	vl_splt: 	1,
	vl_clor: 	1,
	vl_lcdac: 	0,
	vl_tft: 	0,
	vl_hpw: 	1,
	vl_blw: 	3,
	vl_elw: 	3,
	vl_vpw: 	1,
	vl_bfw: 	0,
	vl_efw: 	0,
};
#endif /* CONFIG_SHARP_LM8V31 */

/*----------------------------------------------------------------------*/

/*----------------------------------------------------------------------*/

#if defined(LCD_INFO_BELOW_LOGO)
# define LCD_INFO_X		0
# define LCD_INFO_Y		(BMP_LOGO_HEIGHT + VIDEO_FONT_HEIGHT)
#elif defined(CONFIG_LCD_LOGO)
# define LCD_INFO_X		(BMP_LOGO_WIDTH + 4 * VIDEO_FONT_WIDTH)
# define LCD_INFO_Y		(VIDEO_FONT_HEIGHT)
#else
# define LCD_INFO_X		(VIDEO_FONT_WIDTH)
# define LCD_INFO_Y		(VIDEO_FONT_HEIGHT)
#endif

#ifndef LCD_BPP
#define LCD_BPP			LCD_COLOR8
#endif
#ifndef LCD_DF
#define LCD_DF			1
#endif

#define NBITS(bit_code)		(1 << (bit_code))
#define NCOLORS(bit_code)	(1 << NBITS(bit_code))

static int lcd_line_length;

static int lcd_color_fg;
static int lcd_color_bg;

static char lcd_is_enabled = 0;		/* Indicate that LCD is enabled	*/

/*
 * Frame buffer memory information
 */
static void *lcd_base;			/* Start of framebuffer memory	*/
static void *lcd_console_address;	/* Start of console buffer	*/


/************************************************************************/
/* ** CONSOLE CONSTANTS							*/
/************************************************************************/

#if LCD_BPP == LCD_MONOCHROME

/*
 * Simple color definitions
 */
#define CONSOLE_COLOR_BLACK	 0
#define CONSOLE_COLOR_WHITE	 1	/* Must remain last / highest */

#elif 	LCD_BPP == LCD_COLOR8

/*
 * Simple color definitions
 */
#define CONSOLE_COLOR_BLACK	 0
#define CONSOLE_COLOR_RED	 1
#define CONSOLE_COLOR_GREEN	 2
#define CONSOLE_COLOR_YELLOW	 3
#define CONSOLE_COLOR_BLUE	 4
#define CONSOLE_COLOR_MAGENTA	 5
#define CONSOLE_COLOR_CYAN	 6
#define CONSOLE_COLOR_GREY	14
#define CONSOLE_COLOR_WHITE	15	/* Must remain last / highest */

#else /* 16 bit */

#define CONSOLE_COLOR_BLACK	 0x0000
#define CONSOLE_COLOR_WHITE	 0xffff	/* Must remain last / highest */

#endif

#if defined(CONFIG_LCD_LOGO) && (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET)
#error Default Color Map overlaps with Logo Color Map
#endif

/************************************************************************/

#ifndef PAGE_SIZE
#define	PAGE_SIZE	4096
#endif


/************************************************************************/
/* ** CONSOLE DEFINITIONS & FUNCTIONS					*/
/************************************************************************/

#if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
#define CONSOLE_ROWS		((panel_info.vl_row-BMP_LOGO_HEIGHT) \
					/ VIDEO_FONT_HEIGHT)
#else
#define CONSOLE_ROWS		(panel_info.vl_row / VIDEO_FONT_HEIGHT)
#endif
#define CONSOLE_COLS		(panel_info.vl_col / VIDEO_FONT_WIDTH)
#define CONSOLE_ROW_SIZE	(VIDEO_FONT_HEIGHT * lcd_line_length)
#define CONSOLE_ROW_FIRST	(lcd_console_address)
#define CONSOLE_ROW_SECOND	(lcd_console_address + CONSOLE_ROW_SIZE)
#define CONSOLE_ROW_LAST	(lcd_console_address + CONSOLE_SIZE \
					- CONSOLE_ROW_SIZE)
#define CONSOLE_SIZE		(CONSOLE_ROW_SIZE * CONSOLE_ROWS)
#define CONSOLE_SCROLL_SIZE	(CONSOLE_SIZE - CONSOLE_ROW_SIZE)

#if  LCD_BPP == LCD_MONOCHROME
#define COLOR_MASK(c)		((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
				 (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
#elif LCD_BPP == LCD_COLOR8
#define COLOR_MASK(c)		(c)
#elif LCD_BPP == LCD_COLOR16
#define COLOR_MASK(c)		(c)
#else
#error Unsupported LCD BPP.
#endif

static short console_col;
static short console_row;

/************************************************************************/

ulong	lcd_setmem (ulong addr);

static void	lcd_drawchars  (ushort x, ushort y, uchar *str, int count);
static inline void lcd_puts_xy (ushort x, ushort y, uchar *s);
static inline void lcd_putc_xy (ushort x, ushort y, uchar  c);

static int	lcd_init (void *lcdbase);
static void	lcd_ctrl_init (void *lcdbase);
static void	lcd_enable (void);
static void    *lcd_logo (void);
#if LCD_BPP == LCD_COLOR8
static void	lcd_setcolreg (ushort regno,
				ushort red, ushort green, ushort blue);
#endif
#if LCD_BPP == LCD_MONOCHROME
static void	lcd_initcolregs (void);
#endif
static void	lcd_setfgcolor (int color);
static void	lcd_setbgcolor (int color);

#ifdef	NOT_USED_SO_FAR
static int	lcd_getbgcolor (void);
static void	lcd_disable (void);
static void	lcd_getcolreg (ushort regno,
				ushort *red, ushort *green, ushort *blue);
static int	lcd_getfgcolor (void);
#endif	/* NOT_USED_SO_FAR */


static int pxafb_init_mem(void *lcdbase, vidinfo_t *vid);
static void pxafb_setup_gpio(vidinfo_t *vid);
static void pxafb_enable_controller(vidinfo_t *vid);
static int pxafb_init(vidinfo_t *vid);

/************************************************************************/

/*----------------------------------------------------------------------*/

static void console_scrollup (void)
{
	/* Copy up rows ignoring the first one */
	memcpy (CONSOLE_ROW_FIRST, CONSOLE_ROW_SECOND, CONSOLE_SCROLL_SIZE);

	/* Clear the last one */
	memset (CONSOLE_ROW_LAST, COLOR_MASK(lcd_color_bg), CONSOLE_ROW_SIZE);
}

/*----------------------------------------------------------------------*/

static inline void console_back (void)
{
	if (--console_col < 0) {
		console_col = CONSOLE_COLS-1 ;
		if (--console_row < 0) {
			console_row = 0;
		}
	}

	lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
		     console_row * VIDEO_FONT_HEIGHT,
		     ' ');
}

/*----------------------------------------------------------------------*/

static inline void console_newline (void)
{
	++console_row;
	console_col = 0;

	/* Check if we need to scroll the terminal */
	if (console_row >= CONSOLE_ROWS) {
		/* Scroll everything up */
		console_scrollup () ;
		--console_row;
	}
}

/*----------------------------------------------------------------------*/

void lcd_putc (const char c)
{
	if (!lcd_is_enabled) {
		serial_putc(c);
		return;
	}

	switch (c) {
	case '\r':	console_col = 0;
			return;

	case '\n':	console_newline();
			return;

	case '\t':	/* Tab (8 chars alignment) */
			console_col |=  8;
			console_col &= ~7;

			if (console_col >= CONSOLE_COLS) {
				console_newline();
			}
			return;

	case '\b':	console_back();
			return;

	default:	lcd_putc_xy (console_col * VIDEO_FONT_WIDTH,
				     console_row * VIDEO_FONT_HEIGHT,
				     c);
			if (++console_col >= CONSOLE_COLS) {
				console_newline();
			}
			return;
	}
	/* NOTREACHED */
}

/*----------------------------------------------------------------------*/

void lcd_puts (const char *s)
{
	if (!lcd_is_enabled) {
		serial_puts (s);
		return;
	}

	while (*s) {
		lcd_putc (*s++);
	}
}

/************************************************************************/
/* ** Low-Level Graphics Routines					*/
/************************************************************************/

static void lcd_drawchars (ushort x, ushort y, uchar *str, int count)
{
	uchar *dest;
	ushort off, row;

	dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
	off  = x * (1 << LCD_BPP) % 8;

	for (row=0;  row < VIDEO_FONT_HEIGHT;  ++row, dest += lcd_line_length)  {
		uchar *s = str;
		uchar *d = dest;
		int i;

#if LCD_BPP == LCD_MONOCHROME
		uchar rest = *d & -(1 << (8-off));
		uchar sym;
#endif
		for (i=0; i<count; ++i) {
			uchar c, bits;

			c = *s++;
			bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];

#if LCD_BPP == LCD_MONOCHROME
			sym  = (COLOR_MASK(lcd_color_fg) & bits) |
			       (COLOR_MASK(lcd_color_bg) & ~bits);

			*d++ = rest | (sym >> off);
			rest = sym << (8-off);
#elif LCD_BPP == LCD_COLOR8
			for (c=0; c<8; ++c) {
				*d++ = (bits & 0x80) ?
						lcd_color_fg : lcd_color_bg;
				bits <<= 1;
			}
#elif LCD_BPP == LCD_COLOR16
			for (c=0; c<16; ++c) {
				*d++ = (bits & 0x80) ?
						lcd_color_fg : lcd_color_bg;
				bits <<= 1;
			}
#endif
		}

#if LCD_BPP == LCD_MONOCHROME
		*d  = rest | (*d & ((1 << (8-off)) - 1));
#endif
	}
}

/*----------------------------------------------------------------------*/

static inline void lcd_puts_xy (ushort x, ushort y, uchar *s)
{
#if defined(CONFIG_LCD_LOGO) && !defined(LCD_INFO_BELOW_LOGO)
	lcd_drawchars (x, y+BMP_LOGO_HEIGHT, s, strlen (s));
#else
	lcd_drawchars (x, y, s, strlen (s));
#endif
}

/*----------------------------------------------------------------------*/

static inline void lcd_putc_xy (ushort x, ushort y, uchar c)