[linux.git] / drivers / video / hitfb.c

/*
 * linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
 *
 * (C) 1999 Mihai Spatar
 * (C) 2000 YAEGASHI Takeshi
 * (C) 2003, 2004 Paul Mundt
 * (C) 2003, 2004, 2006 Andriy Skulysh
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License. See the file COPYING in the main directory of this archive for
 *  more details.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/fb.h>

#include <asm/machvec.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/hd64461.h>
#include <asm/cpu/dac.h>

#define	WIDTH 640

static struct fb_var_screeninfo hitfb_var __initdata = {
	.activate	= FB_ACTIVATE_NOW,
	.height		= -1,
	.width		= -1,
	.vmode		= FB_VMODE_NONINTERLACED,
};

static struct fb_fix_screeninfo hitfb_fix __initdata = {
	.id		= "Hitachi HD64461",
	.type		= FB_TYPE_PACKED_PIXELS,
	.accel		= FB_ACCEL_NONE,
};

static u32 pseudo_palette[16];
static struct fb_info fb_info;

static inline void hitfb_accel_wait(void)
{
	while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
}

static inline void hitfb_accel_start(int truecolor)
{
	if (truecolor) {
		fb_writew(6, HD64461_GRCFGR);
	} else {
		fb_writew(7, HD64461_GRCFGR);
	}
}

static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
					u16 width, u16 height)
{
	u32 saddr = WIDTH * dy + dx;
	if (truecolor)
		saddr <<= 1;

	fb_writew(width-1, HD64461_BBTDWR);
	fb_writew(height-1, HD64461_BBTDHR);

	fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
	fb_writew(saddr >> 16, HD64461_BBTDSARH);

}

static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
				      u16 dy, u16 width, u16 height, u16 rop,
				      u32 mask_addr)
{
	u32 saddr, daddr;
	u32 maddr = 0;

	height--;
	width--;
	fb_writew(rop, HD64461_BBTROPR);
	if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
		saddr = WIDTH * (sy + height) + sx + width;
		daddr = WIDTH * (dy + height) + dx + width;
		if (mask_addr) {
			if (truecolor)
				maddr = ((width >> 3) + 1) * (height + 1) - 1;
			else
				maddr =
				    (((width >> 4) + 1) * (height + 1) - 1) * 2;

			fb_writew((1 << 5) | 1, HD64461_BBTMDR);
		} else
			fb_writew(1, HD64461_BBTMDR);
	} else {
		saddr = WIDTH * sy + sx;
		daddr = WIDTH * dy + dx;
		if (mask_addr) {
			fb_writew((1 << 5), HD64461_BBTMDR);
		} else {
			fb_writew(0, HD64461_BBTMDR);
		}
	}
	if (truecolor) {
		saddr <<= 1;
		daddr <<= 1;
	}
	fb_writew(width, HD64461_BBTDWR);
	fb_writew(height, HD64461_BBTDHR);
	fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
	fb_writew(saddr >> 16, HD64461_BBTSSARH);
	fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
	fb_writew(daddr >> 16, HD64461_BBTDSARH);
	if (mask_addr) {
		maddr += mask_addr;
		fb_writew(maddr & 0xffff, HD64461_BBTMARL);
		fb_writew(maddr >> 16, HD64461_BBTMARH);
	}
	hitfb_accel_start(truecolor);
}

static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
{
	if (rect->rop != ROP_COPY)
		cfb_fillrect(p, rect);
	else {
		hitfb_accel_wait();
		fb_writew(0x00f0, HD64461_BBTROPR);
		fb_writew(16, HD64461_BBTMDR);

		if (p->var.bits_per_pixel == 16) {
			fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
				  HD64461_GRSCR);
			hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
					     rect->height);
			hitfb_accel_start(1);
		} else {
			fb_writew(rect->color, HD64461_GRSCR);
			hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
					     rect->height);
			hitfb_accel_start(0);
		}
	}
}

static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
{
	hitfb_accel_wait();
	hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
			   area->dx, area->dy, area->width, area->height,
			   0x00cc, 0);
}

static int hitfb_pan_display(struct fb_var_screeninfo *var,
			     struct fb_info *info)
{
	int xoffset = var->xoffset;
	int yoffset = var->yoffset;

	if (xoffset != 0)
		return -EINVAL;

	fb_writew((yoffset*info->fix.line_length)>>10, HD64461_LCDCBAR);

	return 0;
}

int hitfb_blank(int blank_mode, struct fb_info *info)
{
	unsigned short v;

	if (blank_mode) {
		v = fb_readw(HD64461_LDR1);
		v &= ~HD64461_LDR1_DON;
		fb_writew(v, HD64461_LDR1);

		v = fb_readw(HD64461_LCDCCR);
		v |= HD64461_LCDCCR_MOFF;
		fb_writew(v, HD64461_LCDCCR);

		v = fb_readw(HD64461_STBCR);
		v |= HD64461_STBCR_SLCDST;
		fb_writew(v, HD64461_STBCR);
	} else {
		v = fb_readw(HD64461_STBCR);
		v &= ~HD64461_STBCR_SLCDST;
		fb_writew(v, HD64461_STBCR);

		v = fb_readw(HD64461_LCDCCR);
		v &= ~(HD64461_LCDCCR_MOFF | HD64461_LCDCCR_STREQ);
		fb_writew(v, HD64461_LCDCCR);

		do {
		    v = fb_readw(HD64461_LCDCCR);
		} while(v&HD64461_LCDCCR_STBACK);

		v = fb_readw(HD64461_LDR1);
		v |= HD64461_LDR1_DON;
		fb_writew(v, HD64461_LDR1);
	}
	return 0;
}

static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
			   unsigned blue, unsigned transp, struct fb_info *info)
{
	if (regno >= 256)
		return 1;

	switch (info->var.bits_per_pixel) {
	case 8:
		fb_writew(regno << 8, HD64461_CPTWAR);
		fb_writew(red >> 10, HD64461_CPTWDR);
		fb_writew(green >> 10, HD64461_CPTWDR);
		fb_writew(blue >> 10, HD64461_CPTWDR);
		break;
	case 16:
		if (regno >= 16)
			return 1;
		((u32 *) (info->pseudo_palette))[regno] =
		    ((red & 0xf800)) |
		    ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
		break;
	}
	return 0;
}

static int hitfb_sync(struct fb_info *info)
{
	hitfb_accel_wait();

	return 0;
}

static int hitfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
	int maxy;

	var->xres = info->var.xres;
	var->xres_virtual = info->var.xres;
	var->yres = info->var.yres;

	if ((var->bits_per_pixel != 8) && (var->bits_per_pixel != 16))
		var->bits_per_pixel = info->var.bits_per_pixel;

	if (var->yres_virtual < var->yres)
		var->yres_virtual = var->yres;

	maxy = info->fix.smem_len / var->xres;

	if (var->bits_per_pixel == 16)
		maxy /= 2;

	if (var->yres_virtual > maxy)
		var->yres_virtual = maxy;

	var->xoffset = 0;
	var->yoffset = 0;

	switch (var->bits_per_pixel) {
	case 8:
		var->red.offset = 0;
		var->red.length = 8;
		var->green.offset = 0;
		var->green.length = 8;
		var->blue.offset = 0;
		var->blue.length = 8;
		var->transp.offset = 0;
		var->transp.length = 0;
		break;
	case 16:		/* RGB 565 */
		var->red.offset = 11;
		var->red.length = 5;
		var->green.offset = 5;
		var->green.length = 6;
		var->blue.offset = 0;
		var->blue.length = 5;
		var->transp.offset = 0;
		var->transp.length = 0;
		break;
	}

	return 0;
}

static int hitfb_set_par(struct fb_info *info)
{
	unsigned short ldr3;

	switch (info->var.bits_per_pixel) {
	case 8:
		info->fix.line_length = info->var.xres;
		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
		info->fix.ypanstep = 16;
		break;
	case 16:
		info->fix.line_length = info->var.xres*2;
		info->fix.visual = FB_VISUAL_TRUECOLOR;
		info->fix.ypanstep = 8;
		break;
	}

	fb_writew(info->fix.line_length, HD64461_LCDCLOR);
	ldr3 = fb_readw(HD64461_LDR3);
	ldr3 &= ~15;
	ldr3 |= (info->var.bits_per_pixel == 8) ? 4 : 8;
	fb_writew(ldr3, HD64461_LDR3);
	return 0;
}

static struct fb_ops hitfb_ops = {
	.owner		= THIS_MODULE,
	.fb_check_var	= hitfb_check_var,
	.fb_set_par		= hitfb_set_par,
	.fb_setcolreg	= hitfb_setcolreg,
	.fb_blank	= hitfb_blank,
	.fb_sync	= hitfb_sync,
	.fb_pan_display = hitfb_pan_display,
	.fb_fillrect	= hitfb_fillrect,
	.fb_copyarea	= hitfb_copyarea,
	.fb_imageblit	= cfb_imageblit,
};

static int __init hitfb_probe(struct platform_device *dev)
{
	unsigned short lcdclor, ldr3, ldvndr;

	if (fb_get_options("hitfb", NULL))
		return -ENODEV;

	hitfb_fix.mmio_start = CONFIG_HD64461_IOBASE+0x1000;
	hitfb_fix.mmio_len = 0x1000;
	hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
	hitfb_fix.smem_len = 512 * 1024;

	lcdclor = fb_readw(HD64461_LCDCLOR);
	ldvndr = fb_readw(HD64461_LDVNDR);
	ldr3 = fb_readw(HD64461_LDR3);

	switch (ldr3 & 15) {
	default:
	case 4:
		hitfb_var.bits_per_pixel = 8;
		hitfb_var.xres = lcdclor;
		break;
	case 8:
		hitfb_var.bits_per_pixel = 16;
		hitfb_var.xres = lcdclor / 2;
		break;
	}
	hitfb_fix.line_length = lcdclor;
	hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
	    FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
	hitfb_var.yres = ldvndr + 1;
	hitfb_var.xres_virtual = hitfb_var.xres;
	hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
	switch (hitfb_var.bits_per_pixel) {
	case 8:
		hitfb_var.red.offset = 0;
		hitfb_var.red.length = 8;
		hitfb_var.green.offset = 0;
		hitfb_var.green.length = 8;
		hitfb_var.blue.offset = 0;
		hitfb_var.blue.length = 8;
		hitfb_var.transp.offset = 0;
		hitfb_var.transp.length = 0;
		break;
	case 16:		/* RGB 565 */
		hitfb_var.red.offset = 11;
		hitfb_var.red.length = 5;
		hitfb_var.green.offset = 5;
		hitfb_var.green.length = 6;
		hitfb_var.blue.offset = 0;
		hitfb_var.blue.length = 5;
		hitfb_var.transp.offset = 0;
		hitfb_var.transp.length = 0;
		break;
	}

	fb_info.fbops = &hitfb_ops;
	fb_info.var = hitfb_var;
	fb_info.fix = hitfb_fix;
	fb_info.pseudo_palette = pseudo_palette;
	fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
		FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA;

	fb_info.screen_base = (void *)hitfb_fix.smem_start;

	fb_alloc_cmap(&fb_info.cmap, 256, 0);

	if (register_framebuffer(&fb_info) < 0)
		return -EINVAL;

	printk(KERN_INFO "fb%d: %s frame buffer device\n",
	       fb_info.node, fb_info.fix.id);
	return 0;
}

static int __devexit hitfb_remove(struct platform_device *dev)
{
	return unregister_framebuffer(&fb_info);
}

#ifdef CONFIG_PM
static int hitfb_suspend(struct platform_device *dev, pm_message_t state)
{
	u16 v;

	hitfb_blank(1,0);
	v = fb_readw(HD64461_STBCR);
	v |= HD64461_STBCR_SLCKE_IST;
	fb_writew(v, HD64461_STBCR);

	return 0;
}

static int hitfb_resume(struct platform_device *dev)
{
	u16 v;

	v = fb_readw(HD64461_STBCR);
	v &= ~HD64461_STBCR_SLCKE_OST;
	msleep(100);
	v = fb_readw(HD64461_STBCR);
	v &= ~HD64461_STBCR_SLCKE_IST;
	fb_writew(v, HD64461_STBCR);
	hitfb_blank(0,0);

	return 0;
}
#endif

static struct platform_driver hitfb_driver = {
	.probe		= hitfb_probe,
	.remove		= __devexit_p(hitfb_remove),
#ifdef CONFIG_PM
	.suspend	= hitfb_suspend,
	.resume		= hitfb_resume,
#endif
	.driver		= {
		.name	= "hitfb",
	},
};

static struct platform_device hitfb_device = {
	.name	= "hitfb",
	.id	= -1,
};

static int __init hitfb_init(void)
{
	int ret;

	ret = platform_driver_register(&hitfb_driver);
	if (!ret) {
		ret = platform_device_register(&hitfb_device);
		if (ret)
			platform_driver_unregister(&hitfb_driver);
	}
	return ret;
}


static void __exit hitfb_exit(void)
{
	platform_device_unregister(&hitfb_device);
	platform_driver_unregister(&hitfb_driver);
}

module_init(hitfb_init);
module_exit(hitfb_exit);

MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
	3	*
	4	* (C) 1999 Mihai Spatar
	5	* (C) 2000 YAEGASHI Takeshi
	6	* (C) 2003, 2004 Paul Mundt
048839dc	7	* (C) 2003, 2004, 2006 Andriy Skulysh
1da177e4 LT	8	*
	9	* This file is subject to the terms and conditions of the GNU General Public
	10	* License. See the file COPYING in the main directory of this archive for
	11	* more details.
	12	*/
	13
1da177e4 LT	14	#include <linux/module.h>
1da177e4 LT	15	#include <linux/kernel.h>
1da177e4 LT	16	#include <linux/errno.h>
	17	#include <linux/string.h>
	18	#include <linux/mm.h>
1da177e4 LT	19	#include <linux/slab.h>
	20	#include <linux/delay.h>
	21	#include <linux/init.h>
048839dc	22	#include <linux/platform_device.h>
1da177e4 LT	23	#include <linux/fb.h>
	24
	25	#include <asm/machvec.h>
	26	#include <asm/uaccess.h>
	27	#include <asm/pgtable.h>
	28	#include <asm/io.h>
048839dc	29	#include <asm/hd64461.h>
1da177e4	30	#include <asm/cpu/dac.h>
1da177e4 LT	31
	32	#define WIDTH 640
	33
	34	static struct fb_var_screeninfo hitfb_var __initdata = {
	35	.activate = FB_ACTIVATE_NOW,
	36	.height = -1,
	37	.width = -1,
	38	.vmode = FB_VMODE_NONINTERLACED,
	39	};
	40
	41	static struct fb_fix_screeninfo hitfb_fix __initdata = {
	42	.id = "Hitachi HD64461",
	43	.type = FB_TYPE_PACKED_PIXELS,
1da177e4 LT	44	.accel = FB_ACCEL_NONE,
	45	};
	46
	47	static u32 pseudo_palette[16];
	48	static struct fb_info fb_info;
	49
	50	static inline void hitfb_accel_wait(void)
	51	{
	52	while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
	53	}
	54
	55	static inline void hitfb_accel_start(int truecolor)
	56	{
	57	if (truecolor) {
	58	fb_writew(6, HD64461_GRCFGR);
	59	} else {
	60	fb_writew(7, HD64461_GRCFGR);
	61	}
	62	}
	63
	64	static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
	65	u16 width, u16 height)
	66	{
	67	u32 saddr = WIDTH * dy + dx;
	68	if (truecolor)
	69	saddr <<= 1;
	70
048839dc AS	71	fb_writew(width-1, HD64461_BBTDWR);
048839dc AS	72	fb_writew(height-1, HD64461_BBTDHR);
1da177e4 LT	73
	74	fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
	75	fb_writew(saddr >> 16, HD64461_BBTDSARH);
	76
	77	}
	78
1da177e4 LT	79	static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
	80	u16 dy, u16 width, u16 height, u16 rop,
	81	u32 mask_addr)
	82	{
	83	u32 saddr, daddr;
	84	u32 maddr = 0;
	85
048839dc AS	86	height--;
048839dc AS	87	width--;
1da177e4 LT	88	fb_writew(rop, HD64461_BBTROPR);
	89	if ((sy < dy) \|\| ((sy == dy) && (sx <= dx))) {
	90	saddr = WIDTH * (sy + height) + sx + width;
	91	daddr = WIDTH * (dy + height) + dx + width;
	92	if (mask_addr) {
	93	if (truecolor)
	94	maddr = ((width >> 3) + 1) * (height + 1) - 1;
	95	else
	96	maddr =
	97	(((width >> 4) + 1) * (height + 1) - 1) * 2;
	98
	99	fb_writew((1 << 5) \| 1, HD64461_BBTMDR);
	100	} else
	101	fb_writew(1, HD64461_BBTMDR);
	102	} else {
	103	saddr = WIDTH * sy + sx;
	104	daddr = WIDTH * dy + dx;
	105	if (mask_addr) {
	106	fb_writew((1 << 5), HD64461_BBTMDR);
	107	} else {
	108	fb_writew(0, HD64461_BBTMDR);
	109	}
	110	}
	111	if (truecolor) {
	112	saddr <<= 1;
	113	daddr <<= 1;
	114	}
	115	fb_writew(width, HD64461_BBTDWR);
	116	fb_writew(height, HD64461_BBTDHR);
	117	fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
	118	fb_writew(saddr >> 16, HD64461_BBTSSARH);
	119	fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
	120	fb_writew(daddr >> 16, HD64461_BBTDSARH);
	121	if (mask_addr) {
	122	maddr += mask_addr;
	123	fb_writew(maddr & 0xffff, HD64461_BBTMARL);
	124	fb_writew(maddr >> 16, HD64461_BBTMARH);
	125	}
	126	hitfb_accel_start(truecolor);
	127	}
	128
	129	static void hitfb_fillrect(struct fb_info p, const struct fb_fillrect rect)
	130	{
	131	if (rect->rop != ROP_COPY)
	132	cfb_fillrect(p, rect);
	133	else {
048839dc	134	hitfb_accel_wait();
1da177e4 LT	135	fb_writew(0x00f0, HD64461_BBTROPR);
	136	fb_writew(16, HD64461_BBTMDR);
	137
	138	if (p->var.bits_per_pixel == 16) {
	139	fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
	140	HD64461_GRSCR);
	141	hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
	142	rect->height);
	143	hitfb_accel_start(1);
	144	} else {
	145	fb_writew(rect->color, HD64461_GRSCR);
	146	hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
	147	rect->height);
	148	hitfb_accel_start(0);
	149	}
1da177e4 LT	150	}
	151	}
	152
	153	static void hitfb_copyarea(struct fb_info p, const struct fb_copyarea area)
	154	{
048839dc	155	hitfb_accel_wait();
1da177e4 LT	156	hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
	157	area->dx, area->dy, area->width, area->height,
	158	0x00cc, 0);
1da177e4 LT	159	}
	160
	161	static int hitfb_pan_display(struct fb_var_screeninfo *var,
	162	struct fb_info *info)
	163	{
	164	int xoffset = var->xoffset;
	165	int yoffset = var->yoffset;
	166
	167	if (xoffset != 0)
	168	return -EINVAL;
	169
048839dc	170	fb_writew((yoffset*info->fix.line_length)>>10, HD64461_LCDCBAR);
1da177e4 LT	171
	172	return 0;
	173	}
	174
	175	int hitfb_blank(int blank_mode, struct fb_info *info)
	176	{
	177	unsigned short v;
	178
	179	if (blank_mode) {
1da177e4 LT	180	v = fb_readw(HD64461_LDR1);
	181	v &= ~HD64461_LDR1_DON;
	182	fb_writew(v, HD64461_LDR1);
	183
	184	v = fb_readw(HD64461_LCDCCR);
	185	v \|= HD64461_LCDCCR_MOFF;
	186	fb_writew(v, HD64461_LCDCCR);
	187
	188	v = fb_readw(HD64461_STBCR);
	189	v \|= HD64461_STBCR_SLCDST;
	190	fb_writew(v, HD64461_STBCR);
	191	} else {
	192	v = fb_readw(HD64461_STBCR);
	193	v &= ~HD64461_STBCR_SLCDST;
	194	fb_writew(v, HD64461_STBCR);
4bcac20a	195
048839dc AS	196	v = fb_readw(HD64461_LCDCCR);
	197	v &= ~(HD64461_LCDCCR_MOFF \| HD64461_LCDCCR_STREQ);
	198	fb_writew(v, HD64461_LCDCCR);
	199
	200	do {
	201	v = fb_readw(HD64461_LCDCCR);
	202	} while(v&HD64461_LCDCCR_STBACK);
	203
1da177e4 LT	204	v = fb_readw(HD64461_LDR1);
	205	v \|= HD64461_LDR1_DON;
	206	fb_writew(v, HD64461_LDR1);
1da177e4 LT	207	}
	208	return 0;
	209	}
	210
	211	static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
	212	unsigned blue, unsigned transp, struct fb_info *info)
	213	{
048839dc	214	if (regno >= 256)
1da177e4 LT	215	return 1;
	216
	217	switch (info->var.bits_per_pixel) {
	218	case 8:
	219	fb_writew(regno << 8, HD64461_CPTWAR);
	220	fb_writew(red >> 10, HD64461_CPTWDR);
	221	fb_writew(green >> 10, HD64461_CPTWDR);
	222	fb_writew(blue >> 10, HD64461_CPTWDR);
	223	break;
	224	case 16:
048839dc AS	225	if (regno >= 16)
048839dc AS	226	return 1;
1da177e4 LT	227	((u32 *) (info->pseudo_palette))[regno] =
	228	((red & 0xf800)) \|
	229	((green & 0xfc00) >> 5) \| ((blue & 0xf800) >> 11);
	230	break;
	231	}
	232	return 0;
	233	}
	234
048839dc AS	235	static int hitfb_sync(struct fb_info *info)
	236	{
	237	hitfb_accel_wait();
	238
	239	return 0;
	240	}
	241
	242	static int hitfb_check_var(struct fb_var_screeninfo var, struct fb_info info)
	243	{
	244	int maxy;
	245
	246	var->xres = info->var.xres;
	247	var->xres_virtual = info->var.xres;
	248	var->yres = info->var.yres;
	249
	250	if ((var->bits_per_pixel != 8) && (var->bits_per_pixel != 16))
	251	var->bits_per_pixel = info->var.bits_per_pixel;
	252
	253	if (var->yres_virtual < var->yres)
	254	var->yres_virtual = var->yres;
	255
	256	maxy = info->fix.smem_len / var->xres;
	257
	258	if (var->bits_per_pixel == 16)
	259	maxy /= 2;
	260
	261	if (var->yres_virtual > maxy)
	262	var->yres_virtual = maxy;
	263
	264	var->xoffset = 0;
	265	var->yoffset = 0;
	266
	267	switch (var->bits_per_pixel) {
	268	case 8:
	269	var->red.offset = 0;
	270	var->red.length = 8;
	271	var->green.offset = 0;
	272	var->green.length = 8;
	273	var->blue.offset = 0;
	274	var->blue.length = 8;
	275	var->transp.offset = 0;
	276	var->transp.length = 0;
	277	break;
	278	case 16: /* RGB 565 */
	279	var->red.offset = 11;
	280	var->red.length = 5;
	281	var->green.offset = 5;
	282	var->green.length = 6;
	283	var->blue.offset = 0;
	284	var->blue.length = 5;
	285	var->transp.offset = 0;
	286	var->transp.length = 0;
	287	break;
	288	}
	289
	290	return 0;
	291	}
	292
	293	static int hitfb_set_par(struct fb_info *info)
	294	{
	295	unsigned short ldr3;
	296
	297	switch (info->var.bits_per_pixel) {
	298	case 8:
299	info->fix.line_length = info->var.xres;
300	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
301	info->fix.ypanstep = 16;
302	break;
303	case 16:
304	info->fix.line_length = info->var.xres*2;
305	info->fix.visual = FB_VISUAL_TRUECOLOR;
306	info->fix.ypanstep = 8;
307	break;
308	}
309
310	fb_writew(info->fix.line_length, HD64461_LCDCLOR);
311	ldr3 = fb_readw(HD64461_LDR3);
312	ldr3 &= ~15;
313	ldr3 \|= (info->var.bits_per_pixel == 8) ? 4 : 8;
314	fb_writew(ldr3, HD64461_LDR3);
315	return 0;
316	}
317
1da177e4 LT	318	static struct fb_ops hitfb_ops = {
1da177e4 LT	319	.owner = THIS_MODULE,
048839dc AS	320	.fb_check_var = hitfb_check_var,
048839dc AS	321	.fb_set_par = hitfb_set_par,
1da177e4 LT	322	.fb_setcolreg = hitfb_setcolreg,
1da177e4 LT	323	.fb_blank = hitfb_blank,
048839dc	324	.fb_sync = hitfb_sync,
1da177e4 LT	325	.fb_pan_display = hitfb_pan_display,
	326	.fb_fillrect = hitfb_fillrect,
	327	.fb_copyarea = hitfb_copyarea,
	328	.fb_imageblit = cfb_imageblit,
1da177e4 LT	329	};
1da177e4 LT	330
048839dc	331	static int __init hitfb_probe(struct platform_device *dev)
1da177e4 LT	332	{
1da177e4 LT	333	unsigned short lcdclor, ldr3, ldvndr;
1da177e4 LT	334
	335	if (fb_get_options("hitfb", NULL))
	336	return -ENODEV;
	337
048839dc AS	338	hitfb_fix.mmio_start = CONFIG_HD64461_IOBASE+0x1000;
048839dc AS	339	hitfb_fix.mmio_len = 0x1000;
1da177e4	340	hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
048839dc	341	hitfb_fix.smem_len = 512 * 1024;
1da177e4 LT	342
	343	lcdclor = fb_readw(HD64461_LCDCLOR);
	344	ldvndr = fb_readw(HD64461_LDVNDR);
	345	ldr3 = fb_readw(HD64461_LDR3);
	346
	347	switch (ldr3 & 15) {
	348	default:
	349	case 4:
	350	hitfb_var.bits_per_pixel = 8;
	351	hitfb_var.xres = lcdclor;
	352	break;
	353	case 8:
	354	hitfb_var.bits_per_pixel = 16;
	355	hitfb_var.xres = lcdclor / 2;
	356	break;
	357	}
	358	hitfb_fix.line_length = lcdclor;
	359	hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
	360	FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
	361	hitfb_var.yres = ldvndr + 1;
	362	hitfb_var.xres_virtual = hitfb_var.xres;
	363	hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
	364	switch (hitfb_var.bits_per_pixel) {
	365	case 8:
	366	hitfb_var.red.offset = 0;
	367	hitfb_var.red.length = 8;
	368	hitfb_var.green.offset = 0;
	369	hitfb_var.green.length = 8;
	370	hitfb_var.blue.offset = 0;
	371	hitfb_var.blue.length = 8;
	372	hitfb_var.transp.offset = 0;
	373	hitfb_var.transp.length = 0;
	374	break;
	375	case 16: /* RGB 565 */
	376	hitfb_var.red.offset = 11;
	377	hitfb_var.red.length = 5;
	378	hitfb_var.green.offset = 5;
	379	hitfb_var.green.length = 6;
	380	hitfb_var.blue.offset = 0;
	381	hitfb_var.blue.length = 5;
	382	hitfb_var.transp.offset = 0;
	383	hitfb_var.transp.length = 0;
	384	break;
	385	}
	386
	387	fb_info.fbops = &hitfb_ops;
	388	fb_info.var = hitfb_var;
	389	fb_info.fix = hitfb_fix;
	390	fb_info.pseudo_palette = pseudo_palette;
048839dc AS	391	fb_info.flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_YPAN \|
048839dc AS	392	FBINFO_HWACCEL_FILLRECT \| FBINFO_HWACCEL_COPYAREA;
1da177e4 LT	393
	394	fb_info.screen_base = (void *)hitfb_fix.smem_start;
	395
048839dc	396	fb_alloc_cmap(&fb_info.cmap, 256, 0);
1da177e4 LT	397
	398	if (register_framebuffer(&fb_info) < 0)
	399	return -EINVAL;
	400
	401	printk(KERN_INFO "fb%d: %s frame buffer device\n",
	402	fb_info.node, fb_info.fix.id);
	403	return 0;
	404	}
	405
048839dc AS	406	static int __devexit hitfb_remove(struct platform_device *dev)
	407	{
	408	return unregister_framebuffer(&fb_info);
	409	}
	410
	411	#ifdef CONFIG_PM
	412	static int hitfb_suspend(struct platform_device *dev, pm_message_t state)
	413	{
	414	u16 v;
	415
	416	hitfb_blank(1,0);
	417	v = fb_readw(HD64461_STBCR);
	418	v \|= HD64461_STBCR_SLCKE_IST;
	419	fb_writew(v, HD64461_STBCR);
	420
	421	return 0;
	422	}
	423
	424	static int hitfb_resume(struct platform_device *dev)
	425	{
	426	u16 v;
	427
	428	v = fb_readw(HD64461_STBCR);
	429	v &= ~HD64461_STBCR_SLCKE_OST;
	430	msleep(100);
	431	v = fb_readw(HD64461_STBCR);
	432	v &= ~HD64461_STBCR_SLCKE_IST;
	433	fb_writew(v, HD64461_STBCR);
	434	hitfb_blank(0,0);
	435
	436	return 0;
	437	}
	438	#endif
	439
	440	static struct platform_driver hitfb_driver = {
	441	.probe = hitfb_probe,
	442	.remove = __devexit_p(hitfb_remove),
	443	#ifdef CONFIG_PM
	444	.suspend = hitfb_suspend,
	445	.resume = hitfb_resume,
	446	#endif
	447	.driver = {
	448	.name = "hitfb",
	449	},
	450	};
	451
	452	static struct platform_device hitfb_device = {
	453	.name = "hitfb",
	454	.id = -1,
	455	};
	456
	457	static int __init hitfb_init(void)
	458	{
	459	int ret;
	460
	461	ret = platform_driver_register(&hitfb_driver);
	462	if (!ret) {
	463	ret = platform_device_register(&hitfb_device);
	464	if (ret)
	465	platform_driver_unregister(&hitfb_driver);
	466	}
	467	return ret;
	468	}
	469
470
1da177e4 LT	471	static void __exit hitfb_exit(void)
1da177e4 LT	472	{
048839dc AS	473	platform_device_unregister(&hitfb_device);
048839dc AS	474	platform_driver_unregister(&hitfb_driver);
1da177e4 LT	475	}
	476
	477	module_init(hitfb_init);
	478	module_exit(hitfb_exit);
	479
	480	MODULE_LICENSE("GPL");