[people/ms/u-boot.git] / drivers / video / bus_vcxk.c

/*
 * (C) Copyright 2005-2009
 * Jens Scharsig @ BuS Elektronik GmbH & Co. KG, <esw@bus-elektronik.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <bmp_layout.h>
#include <asm/io.h>

vu_char  *vcxk_bws      = ((vu_char *) (CONFIG_SYS_VCXK_BASE));
vu_short *vcxk_bws_word = ((vu_short *)(CONFIG_SYS_VCXK_BASE));
vu_long  *vcxk_bws_long = ((vu_long *) (CONFIG_SYS_VCXK_BASE));

#ifdef CONFIG_AT91RM9200
	#include <asm/arch/hardware.h>
	#include <asm/arch/at91_pio.h>

	#ifndef VCBITMASK
		#define VCBITMASK(bitno)	(0x0001 << (bitno % 16))
	#endif
at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE;
#define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
	do { \
		writel(PIN, &pio->PORT.per); \
		writel(PIN, &pio->PORT.DDR); \
		writel(PIN, &pio->PORT.mddr); \
		if (!I0O1) \
			writel(PIN, &pio->PORT.puer); \
	} while (0);

#define VCXK_SET_PIN(PORT, PIN)	writel(PIN, &pio->PORT.sodr);
#define VCXK_CLR_PIN(PORT, PIN)	writel(PIN, &pio->PORT.codr);

#define VCXK_ACKNOWLEDGE	\
	(!(readl(&pio->CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT.pdsr) & \
			CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
#elif defined(CONFIG_MCF52x2)
	#include <asm/m5282.h>
	#ifndef VCBITMASK
		#define VCBITMASK(bitno) (0x8000 >> (bitno % 16))
	#endif

	#define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
		if (I0O1) DDR |= PIN; else DDR &= ~PIN;

	#define VCXK_SET_PIN(PORT, PIN)	PORT |= PIN;
	#define VCXK_CLR_PIN(PORT, PIN)	PORT &= ~PIN;

	#define VCXK_ACKNOWLEDGE \
		(!(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT &	\
			CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))

#else
	#error no vcxk support for selected ARCH
#endif

#define VCXK_DISABLE\
	VCXK_SET_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
#define VCXK_ENABLE\
	VCXK_CLR_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)

#ifndef CONFIG_SYS_VCXK_DOUBLEBUFFERED
	#define VCXK_BWS(x, data)		vcxk_bws[x] = data;
	#define VCXK_BWS_WORD_SET(x, mask) 	vcxk_bws_word[x] |= mask;
	#define VCXK_BWS_WORD_CLEAR(x, mask) 	vcxk_bws_word[x] &= ~mask;
	#define VCXK_BWS_LONG(x, data)		vcxk_bws_long[x] = data;
#else
	u_char double_bws[16384];
	u_short *double_bws_word;
	u_long  *double_bws_long;
	#define VCXK_BWS(x,data)	\
		double_bws[x] = data; vcxk_bws[x] = data;
	#define VCXK_BWS_WORD_SET(x,mask)	\
		double_bws_word[x] |= mask;	\
		vcxk_bws_word[x] = double_bws_word[x];
	#define VCXK_BWS_WORD_CLEAR(x,mask)	\
		double_bws_word[x] &= ~mask;	\
		vcxk_bws_word[x] = double_bws_word[x];
	#define VCXK_BWS_LONG(x,data) \
		double_bws_long[x] = data; vcxk_bws_long[x] = data;
#endif

#define VC4K16_Bright1	vcxk_bws_word[0x20004 / 2]
#define VC4K16_Bright2 	vcxk_bws_word[0x20006 / 2]
#define VC2K_Bright	vcxk_bws[0x8000]
#define VC8K_BrightH	vcxk_bws[0xC000]
#define VC8K_BrightL	vcxk_bws[0xC001]

vu_char VC4K16;

u_long display_width;
u_long display_height;
u_long display_bwidth;

ulong search_vcxk_driver(void);
void vcxk_cls(void);
void vcxk_setbrightness(unsigned int side, short brightness);
int vcxk_request(void);
int vcxk_acknowledge_wait(void);
void vcxk_clear(void);

/*
 ****f* bus_vcxk/vcxk_init
 * FUNCTION
 * initialalize Video Controller
 * PARAMETERS
 * width	visible display width in pixel
 * height	visible display height  in pixel
 ***
 */

int vcxk_init(unsigned long width, unsigned long height)
{
#ifdef CONFIG_SYS_VCXK_RESET_PORT
	VCXK_INIT_PIN(CONFIG_SYS_VCXK_RESET_PORT,
		CONFIG_SYS_VCXK_RESET_PIN, CONFIG_SYS_VCXK_RESET_DDR, 1)
	VCXK_SET_PIN(CONFIG_SYS_VCXK_RESET_PORT, CONFIG_SYS_VCXK_RESET_PIN);
#endif

#ifdef CONFIG_SYS_VCXK_DOUBLEBUFFERED
	double_bws_word  = (u_short *)double_bws;
	double_bws_long  = (u_long *)double_bws;
	debug("%px %px %px\n", double_bws, double_bws_word, double_bws_long);
#endif
	display_width  = width;
	display_height = height;
#if (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 4)
	display_bwidth = ((width + 31) / 8) & ~0x3;
#elif (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 2)
	display_bwidth = ((width + 15) / 8) & ~0x1;
#else
	#error CONFIG_SYS_VCXK_DEFAULT_LINEALIGN is invalid
#endif
	debug("linesize ((%ld + 15) / 8 & ~0x1) = %ld\n",
		display_width, display_bwidth);

#ifdef CONFIG_SYS_VCXK_AUTODETECT
	VC4K16 = 0;
	vcxk_bws_long[1] = 0x0;
	vcxk_bws_long[1] = 0x55AAAA55;
	vcxk_bws_long[5] = 0x0;
	if (vcxk_bws_long[1] == 0x55AAAA55)
		VC4K16 = 1;
#else
	VC4K16 = 1;
	debug("No autodetect: use vc4k\n");
#endif

	VCXK_INIT_PIN(CONFIG_SYS_VCXK_INVERT_PORT,
		CONFIG_SYS_VCXK_INVERT_PIN, CONFIG_SYS_VCXK_INVERT_DDR, 1)
	VCXK_SET_PIN(CONFIG_SYS_VCXK_INVERT_PORT, CONFIG_SYS_VCXK_INVERT_PIN)

	VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT, CONFIG_SYS_VCXK_REQUEST_PIN);
	VCXK_INIT_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
		CONFIG_SYS_VCXK_REQUEST_PIN, CONFIG_SYS_VCXK_REQUEST_DDR, 1)

	VCXK_INIT_PIN(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT,
		CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN,
		CONFIG_SYS_VCXK_ACKNOWLEDGE_DDR, 0)

	VCXK_DISABLE;
	VCXK_INIT_PIN(CONFIG_SYS_VCXK_ENABLE_PORT,
		CONFIG_SYS_VCXK_ENABLE_PIN, CONFIG_SYS_VCXK_ENABLE_DDR, 1)

	vcxk_cls();
	vcxk_cls();	/* clear second/hidden page */

	vcxk_setbrightness(3, 1000);
	VCXK_ENABLE;
	return 1;
}

/*
 ****f* bus_vcxk/vcxk_setpixel
 * FUNCTION
 * set the pixel[x,y] with the given color
 * PARAMETER
 * x		pixel colum
 * y		pixel row
 * color	<0x40 off/black
 *			>0x40 on
 ***
 */

void vcxk_setpixel(int x, int y, unsigned long color)
{
	vu_short dataptr;

	if ((x < display_width) && (y < display_height)) {
		dataptr = ((x / 16)) + (y * (display_bwidth >> 1));

		color = ((color >> 16) & 0xFF) |
			    ((color >> 8) & 0xFF) | (color & 0xFF);

		if (color > 0x40) {
			VCXK_BWS_WORD_SET(dataptr, VCBITMASK(x));
		} else {
			VCXK_BWS_WORD_CLEAR(dataptr, VCBITMASK(x));
		}
	}
}

/*
 ****f* bus_vcxk/vcxk_loadimage
 * FUNCTION
 * copies a binary image to display memory
 ***
 */

void vcxk_loadimage(ulong source)
{
	int cnt;
	vcxk_acknowledge_wait();
	if (VC4K16) {
		for (cnt = 0; cnt < (16384 / 4); cnt++) {
			VCXK_BWS_LONG(cnt, (*(ulong *) source));
			source = source + 4;
		}
	} else {
		for (cnt = 0; cnt < 16384; cnt++) {
			VCXK_BWS_LONG(cnt*2, (*(vu_char *) source));
			source++;
		}
	}
	vcxk_request();
}

/*
 ****f* bus_vcxk/vcxk_cls
 * FUNCTION
 * clear the display
 ***
 */

void vcxk_cls(void)
{
	vcxk_acknowledge_wait();
	vcxk_clear();
	vcxk_request();
}

/*
 ****f* bus_vcxk/vcxk_clear(void)
 * FUNCTION
 * clear the display memory
 ***
 */

void vcxk_clear(void)
{
	int cnt;

	for (cnt = 0; cnt < (16384 / 4); cnt++) {
		VCXK_BWS_LONG(cnt, 0)
	}
}

/*
 ****f* bus_vcxk/vcxk_setbrightness
 * FUNCTION
 * set the display brightness
 * PARAMETER
 * side	1	set front side brightness
 * 		2	set back  side brightness
 *		3	set brightness for both sides
 * brightness 0..1000
 ***
 */

void vcxk_setbrightness(unsigned int side, short brightness)
{
	if (VC4K16) {
		if ((side == 0) || (side & 0x1))
			VC4K16_Bright1 = brightness + 23;
		if ((side == 0) || (side & 0x2))
			VC4K16_Bright2 = brightness + 23;
	} else 	{
		VC2K_Bright = (brightness >> 4) + 2;
		VC8K_BrightH = (brightness + 23) >> 8;
		VC8K_BrightL = (brightness + 23) & 0xFF;
	}
}

/*
 ****f* bus_vcxk/vcxk_request
 * FUNCTION
 * requests viewing of display memory
 ***
 */

int vcxk_request(void)
{
	VCXK_CLR_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
		CONFIG_SYS_VCXK_REQUEST_PIN)
	VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
		CONFIG_SYS_VCXK_REQUEST_PIN);
	return 1;
}

/*
 ****f* bus_vcxk/vcxk_acknowledge_wait
 * FUNCTION
 * wait for acknowledge viewing requests
 ***
 */

int vcxk_acknowledge_wait(void)
{
	while (VCXK_ACKNOWLEDGE)
		;
	return 1;
}

/*
 ****f* bus_vcxk/vcxk_draw_mono
 * FUNCTION
 * copies a monochrom bitmap (BMP-Format) from given memory
 * PARAMETER
 * dataptr	pointer to bitmap
 * x		output bitmap @ columne
 * y		output bitmap @ row
 ***
 */

void vcxk_draw_mono(unsigned char *dataptr, unsigned long linewidth,
	unsigned long  cp_width, unsigned long cp_height)
{
	unsigned char *lineptr;
	unsigned long xcnt, ycnt;

	for (ycnt = cp_height; ycnt > 0; ycnt--) {
		lineptr	= dataptr;
		for (xcnt = 0; xcnt < cp_width; xcnt++) {
			if ((*lineptr << (xcnt % 8)) & 0x80)
				vcxk_setpixel(xcnt, ycnt - 1, 0xFFFFFF);
			else
				vcxk_setpixel(xcnt, ycnt-1, 0);

			if ((xcnt % 8) == 7)
				lineptr++;
		} /* endfor xcnt */
		dataptr = dataptr + linewidth;
	} /* endfor ycnt */
}

/*
 ****f* bus_vcxk/vcxk_display_bitmap
 * FUNCTION
 * copies a bitmap (BMP-Format) to the given position
 * PARAMETER
 * addr		pointer to bitmap
 * x		output bitmap @ columne
 * y		output bitmap @ row
 ***
 */

int vcxk_display_bitmap(ulong addr, int x, int y)
{
	struct bmp_image *bmp;
	unsigned long width;
	unsigned long height;
	unsigned long bpp;

	unsigned long lw;

	unsigned long c_width;
	unsigned long c_height;
	unsigned char *dataptr;

	bmp = (struct bmp_image *)addr;
	if ((bmp->header.signature[0] == 'B') &&
	    (bmp->header.signature[1] == 'M')) {
		width        = le32_to_cpu(bmp->header.width);
		height       = le32_to_cpu(bmp->header.height);
		bpp          = le16_to_cpu(bmp->header.bit_count);

		dataptr = (unsigned char *) bmp +
				le32_to_cpu(bmp->header.data_offset);

		if (display_width < (width + x))
			c_width = display_width - x;
		else
			c_width = width;
		if (display_height < (height + y))
			c_height = display_height - y;
		else
			c_height = height;

		lw = (((width + 7) / 8) + 3) & ~0x3;

		if (c_height < height)
			dataptr = dataptr + lw * (height - c_height);
		switch (bpp) {
		case 1:
			vcxk_draw_mono(dataptr, lw, c_width, c_height);
			break;
		default:
			printf("Error: %ld bit per pixel "
				"not supported by VCxK\n", bpp);
			return 0;
		}
	} else	{
		printf("Error: no valid bmp at %lx\n", (ulong) bmp);
		return 0;
	}
	return 1;
}

/*
 ****f* bus_vcxk/video_display_bitmap
 ***
 */

int video_display_bitmap(ulong addr, int x, int y)
{
	vcxk_acknowledge_wait();
	if (vcxk_display_bitmap(addr, x, y)) {
		vcxk_request();
		return 0;
	}
	return 1;
}

/* EOF */
Commit	Line	Data
50217dee JS	1	/*
	2	* (C) Copyright 2005-2009
	3	* Jens Scharsig @ BuS Elektronik GmbH & Co. KG, <esw@bus-elektronik.de>
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
50217dee JS	6	*/
	7
	8	#include <common.h>
	9	#include <bmp_layout.h>
	10	#include <asm/io.h>
	11
	12	vu_char vcxk_bws = ((vu_char ) (CONFIG_SYS_VCXK_BASE));
	13	vu_short vcxk_bws_word = ((vu_short )(CONFIG_SYS_VCXK_BASE));
	14	vu_long vcxk_bws_long = ((vu_long ) (CONFIG_SYS_VCXK_BASE));
	15
	16	#ifdef CONFIG_AT91RM9200
	17	#include <asm/arch/hardware.h>
0cf0b931 JS	18	#include <asm/arch/at91_pio.h>
0cf0b931 JS	19
50217dee JS	20	#ifndef VCBITMASK
	21	#define VCBITMASK(bitno) (0x0001 << (bitno % 16))
	22	#endif
0cf0b931 JS	23	at91_pio_t pio = (at91_pio_t ) AT91_PIO_BASE;
	24	#define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
	25	do { \
	26	writel(PIN, &pio->PORT.per); \
	27	writel(PIN, &pio->PORT.DDR); \
	28	writel(PIN, &pio->PORT.mddr); \
	29	if (!I0O1) \
	30	writel(PIN, &pio->PORT.puer); \
	31	} while (0);
	32
	33	#define VCXK_SET_PIN(PORT, PIN) writel(PIN, &pio->PORT.sodr);
	34	#define VCXK_CLR_PIN(PORT, PIN) writel(PIN, &pio->PORT.codr);
	35
	36	#define VCXK_ACKNOWLEDGE \
	37	(!(readl(&pio->CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT.pdsr) & \
	38	CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
50217dee JS	39	#elif defined(CONFIG_MCF52x2)
	40	#include <asm/m5282.h>
	41	#ifndef VCBITMASK
	42	#define VCBITMASK(bitno) (0x8000 >> (bitno % 16))
	43	#endif
	44
	45	#define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
	46	if (I0O1) DDR \|= PIN; else DDR &= ~PIN;
	47
	48	#define VCXK_SET_PIN(PORT, PIN) PORT \|= PIN;
	49	#define VCXK_CLR_PIN(PORT, PIN) PORT &= ~PIN;
	50
	51	#define VCXK_ACKNOWLEDGE \
	52	(!(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT & \
	53	CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
	54
	55	#else
	56	#error no vcxk support for selected ARCH
	57	#endif
	58
	59	#define VCXK_DISABLE\
	60	VCXK_SET_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
	61	#define VCXK_ENABLE\
	62	VCXK_CLR_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
	63
	64	#ifndef CONFIG_SYS_VCXK_DOUBLEBUFFERED
	65	#define VCXK_BWS(x, data) vcxk_bws[x] = data;
	66	#define VCXK_BWS_WORD_SET(x, mask) vcxk_bws_word[x] \|= mask;
	67	#define VCXK_BWS_WORD_CLEAR(x, mask) vcxk_bws_word[x] &= ~mask;
	68	#define VCXK_BWS_LONG(x, data) vcxk_bws_long[x] = data;
	69	#else
	70	u_char double_bws[16384];
	71	u_short *double_bws_word;
	72	u_long *double_bws_long;
	73	#define VCXK_BWS(x,data) \
	74	double_bws[x] = data; vcxk_bws[x] = data;
	75	#define VCXK_BWS_WORD_SET(x,mask) \
	76	double_bws_word[x] \|= mask; \
	77	vcxk_bws_word[x] = double_bws_word[x];
	78	#define VCXK_BWS_WORD_CLEAR(x,mask) \
	79	double_bws_word[x] &= ~mask; \
	80	vcxk_bws_word[x] = double_bws_word[x];
	81	#define VCXK_BWS_LONG(x,data) \
	82	double_bws_long[x] = data; vcxk_bws_long[x] = data;
	83	#endif
	84
	85	#define VC4K16_Bright1 vcxk_bws_word[0x20004 / 2]
	86	#define VC4K16_Bright2 vcxk_bws_word[0x20006 / 2]
	87	#define VC2K_Bright vcxk_bws[0x8000]
	88	#define VC8K_BrightH vcxk_bws[0xC000]
	89	#define VC8K_BrightL vcxk_bws[0xC001]
	90
	91	vu_char VC4K16;
	92
	93	u_long display_width;
	94	u_long display_height;
	95	u_long display_bwidth;
	96
	97	ulong search_vcxk_driver(void);
	98	void vcxk_cls(void);
	99	void vcxk_setbrightness(unsigned int side, short brightness);
	100	int vcxk_request(void);
	101	int vcxk_acknowledge_wait(void);
	102	void vcxk_clear(void);
103
104	/*
105	***f bus_vcxk/vcxk_init
106	* FUNCTION
107	* initialalize Video Controller
108	* PARAMETERS
109	* width visible display width in pixel
110	* height visible display height in pixel
111	***
112	*/
113
114	int vcxk_init(unsigned long width, unsigned long height)
115	{
116	#ifdef CONFIG_SYS_VCXK_RESET_PORT
117	VCXK_INIT_PIN(CONFIG_SYS_VCXK_RESET_PORT,
118	CONFIG_SYS_VCXK_RESET_PIN, CONFIG_SYS_VCXK_RESET_DDR, 1)
119	VCXK_SET_PIN(CONFIG_SYS_VCXK_RESET_PORT, CONFIG_SYS_VCXK_RESET_PIN);
120	#endif
121
122	#ifdef CONFIG_SYS_VCXK_DOUBLEBUFFERED
04538cdb	123	double_bws_word = (u_short *)double_bws;
50217dee	124	double_bws_long = (u_long *)double_bws;
4a1921eb	125	debug("%px %px %px\n", double_bws, double_bws_word, double_bws_long);
50217dee JS	126	#endif
	127	display_width = width;
	128	display_height = height;
	129	#if (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 4)
	130	display_bwidth = ((width + 31) / 8) & ~0x3;
	131	#elif (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 2)
	132	display_bwidth = ((width + 15) / 8) & ~0x1;
	133	#else
	134	#error CONFIG_SYS_VCXK_DEFAULT_LINEALIGN is invalid
	135	#endif
458f4381	136	debug("linesize ((%ld + 15) / 8 & ~0x1) = %ld\n",
50217dee JS	137	display_width, display_bwidth);
	138
	139	#ifdef CONFIG_SYS_VCXK_AUTODETECT
	140	VC4K16 = 0;
	141	vcxk_bws_long[1] = 0x0;
	142	vcxk_bws_long[1] = 0x55AAAA55;
	143	vcxk_bws_long[5] = 0x0;
04538cdb AG	144	if (vcxk_bws_long[1] == 0x55AAAA55)
04538cdb AG	145	VC4K16 = 1;
50217dee JS	146	#else
	147	VC4K16 = 1;
	148	debug("No autodetect: use vc4k\n");
	149	#endif
	150
	151	VCXK_INIT_PIN(CONFIG_SYS_VCXK_INVERT_PORT,
	152	CONFIG_SYS_VCXK_INVERT_PIN, CONFIG_SYS_VCXK_INVERT_DDR, 1)
	153	VCXK_SET_PIN(CONFIG_SYS_VCXK_INVERT_PORT, CONFIG_SYS_VCXK_INVERT_PIN)
	154
	155	VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT, CONFIG_SYS_VCXK_REQUEST_PIN);
	156	VCXK_INIT_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
	157	CONFIG_SYS_VCXK_REQUEST_PIN, CONFIG_SYS_VCXK_REQUEST_DDR, 1)
	158
	159	VCXK_INIT_PIN(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT,
	160	CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN,
	161	CONFIG_SYS_VCXK_ACKNOWLEDGE_DDR, 0)
	162
	163	VCXK_DISABLE;
	164	VCXK_INIT_PIN(CONFIG_SYS_VCXK_ENABLE_PORT,
	165	CONFIG_SYS_VCXK_ENABLE_PIN, CONFIG_SYS_VCXK_ENABLE_DDR, 1)
	166
	167	vcxk_cls();
	168	vcxk_cls(); /* clear second/hidden page */
	169
	170	vcxk_setbrightness(3, 1000);
	171	VCXK_ENABLE;
	172	return 1;
	173	}
	174
	175	/*
	176	***f bus_vcxk/vcxk_setpixel
	177	* FUNCTION
	178	* set the pixel[x,y] with the given color
	179	* PARAMETER
	180	* x pixel colum
	181	* y pixel row
	182	* color <0x40 off/black
	183	* >0x40 on
	184	***
	185	*/
	186
	187	void vcxk_setpixel(int x, int y, unsigned long color)
	188	{
	189	vu_short dataptr;
	190
	191	if ((x < display_width) && (y < display_height)) {
	192	dataptr = ((x / 16)) + (y * (display_bwidth >> 1));
	193
	194	color = ((color >> 16) & 0xFF) \|
	195	((color >> 8) & 0xFF) \| (color & 0xFF);
	196
	197	if (color > 0x40) {
	198	VCXK_BWS_WORD_SET(dataptr, VCBITMASK(x));
	199	} else {
	200	VCXK_BWS_WORD_CLEAR(dataptr, VCBITMASK(x));
	201	}
	202	}
	203	}
	204
	205	/*
	206	***f bus_vcxk/vcxk_loadimage
	207	* FUNCTION
	208	* copies a binary image to display memory
	209	***
210	*/
211
212	void vcxk_loadimage(ulong source)
213	{
214	int cnt;
215	vcxk_acknowledge_wait();
216	if (VC4K16) {
217	for (cnt = 0; cnt < (16384 / 4); cnt++) {
218	VCXK_BWS_LONG(cnt, ((ulong ) source));
219	source = source + 4;
220	}
221	} else {
222	for (cnt = 0; cnt < 16384; cnt++) {
223	VCXK_BWS_LONG(cnt2, ((vu_char *) source));
224	source++;
225	}
226	}
227	vcxk_request();
228	}
229
230	/*
231	***f bus_vcxk/vcxk_cls
232	* FUNCTION
233	* clear the display
234	***
235	*/
236
237	void vcxk_cls(void)
238	{
239	vcxk_acknowledge_wait();
240	vcxk_clear();
241	vcxk_request();
242	}
243
244	/*
245	***f bus_vcxk/vcxk_clear(void)
246	* FUNCTION
247	* clear the display memory
248	***
249	*/
250
251	void vcxk_clear(void)
252	{
253	int cnt;
04538cdb	254
50217dee JS	255	for (cnt = 0; cnt < (16384 / 4); cnt++) {
	256	VCXK_BWS_LONG(cnt, 0)
	257	}
	258	}
	259
	260	/*
	261	***f bus_vcxk/vcxk_setbrightness
	262	* FUNCTION
	263	* set the display brightness
	264	* PARAMETER
	265	* side 1 set front side brightness
	266	* 2 set back side brightness
	267	* 3 set brightness for both sides
	268	* brightness 0..1000
	269	***
	270	*/
	271
	272	void vcxk_setbrightness(unsigned int side, short brightness)
	273	{
	274	if (VC4K16) {
	275	if ((side == 0) \|\| (side & 0x1))
	276	VC4K16_Bright1 = brightness + 23;
	277	if ((side == 0) \|\| (side & 0x2))
	278	VC4K16_Bright2 = brightness + 23;
	279	} else {
	280	VC2K_Bright = (brightness >> 4) + 2;
	281	VC8K_BrightH = (brightness + 23) >> 8;
	282	VC8K_BrightL = (brightness + 23) & 0xFF;
	283	}
	284	}
	285
	286	/*
	287	***f bus_vcxk/vcxk_request
	288	* FUNCTION
	289	* requests viewing of display memory
	290	***
	291	*/
	292
	293	int vcxk_request(void)
	294	{
	295	VCXK_CLR_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
	296	CONFIG_SYS_VCXK_REQUEST_PIN)
	297	VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
	298	CONFIG_SYS_VCXK_REQUEST_PIN);
	299	return 1;
	300	}
	301
	302	/*
	303	***f bus_vcxk/vcxk_acknowledge_wait
	304	* FUNCTION
	305	* wait for acknowledge viewing requests
	306	***
	307	*/
	308
	309	int vcxk_acknowledge_wait(void)
	310	{
04538cdb AG	311	while (VCXK_ACKNOWLEDGE)
04538cdb AG	312	;
50217dee JS	313	return 1;
	314	}
	315
	316	/*
	317	***f bus_vcxk/vcxk_draw_mono
	318	* FUNCTION
	319	* copies a monochrom bitmap (BMP-Format) from given memory
	320	* PARAMETER
	321	* dataptr pointer to bitmap
	322	* x output bitmap @ columne
	323	* y output bitmap @ row
	324	***
	325	*/
	326
04538cdb	327	void vcxk_draw_mono(unsigned char *dataptr, unsigned long linewidth,
50217dee JS	328	unsigned long cp_width, unsigned long cp_height)
	329	{
	330	unsigned char *lineptr;
	331	unsigned long xcnt, ycnt;
	332
	333	for (ycnt = cp_height; ycnt > 0; ycnt--) {
	334	lineptr = dataptr;
	335	for (xcnt = 0; xcnt < cp_width; xcnt++) {
	336	if ((*lineptr << (xcnt % 8)) & 0x80)
	337	vcxk_setpixel(xcnt, ycnt - 1, 0xFFFFFF);
	338	else
	339	vcxk_setpixel(xcnt, ycnt-1, 0);
	340
04538cdb AG	341	if ((xcnt % 8) == 7)
04538cdb AG	342	lineptr++;
50217dee JS	343	} /* endfor xcnt */
	344	dataptr = dataptr + linewidth;
	345	} /* endfor ycnt */
	346	}
	347
	348	/*
	349	***f bus_vcxk/vcxk_display_bitmap
	350	* FUNCTION
	351	* copies a bitmap (BMP-Format) to the given position
	352	* PARAMETER
	353	* addr pointer to bitmap
	354	* x output bitmap @ columne
	355	* y output bitmap @ row
	356	***
	357	*/
	358
	359	int vcxk_display_bitmap(ulong addr, int x, int y)
	360	{
1c3dbe56	361	struct bmp_image *bmp;
50217dee JS	362	unsigned long width;
	363	unsigned long height;
	364	unsigned long bpp;
50217dee JS	365
	366	unsigned long lw;
	367
	368	unsigned long c_width;
	369	unsigned long c_height;
	370	unsigned char *dataptr;
50217dee	371
1c3dbe56	372	bmp = (struct bmp_image *)addr;
50217dee JS	373	if ((bmp->header.signature[0] == 'B') &&
50217dee JS	374	(bmp->header.signature[1] == 'M')) {
50217dee JS	375	width = le32_to_cpu(bmp->header.width);
	376	height = le32_to_cpu(bmp->header.height);
	377	bpp = le16_to_cpu(bmp->header.bit_count);
	378
	379	dataptr = (unsigned char *) bmp +
	380	le32_to_cpu(bmp->header.data_offset);
	381
	382	if (display_width < (width + x))
	383	c_width = display_width - x;
	384	else
	385	c_width = width;
	386	if (display_height < (height + y))
	387	c_height = display_height - y;
	388	else
	389	c_height = height;
	390
	391	lw = (((width + 7) / 8) + 3) & ~0x3;
	392
	393	if (c_height < height)
	394	dataptr = dataptr + lw * (height - c_height);
	395	switch (bpp) {
04538cdb AG	396	case 1:
	397	vcxk_draw_mono(dataptr, lw, c_width, c_height);
	398	break;
	399	default:
	400	printf("Error: %ld bit per pixel "
	401	"not supported by VCxK\n", bpp);
50217dee JS	402	return 0;
	403	}
	404	} else {
	405	printf("Error: no valid bmp at %lx\n", (ulong) bmp);
	406	return 0;
	407	}
	408	return 1;
	409	}
	410
	411	/*
	412	***f bus_vcxk/video_display_bitmap
	413	***
	414	*/
	415
	416	int video_display_bitmap(ulong addr, int x, int y)
	417	{
	418	vcxk_acknowledge_wait();
	419	if (vcxk_display_bitmap(addr, x, y)) {
	420	vcxk_request();
	421	return 0;
	422	}
	423	return 1;
	424	}
	425
	426	/* EOF */