drivers/video/hitfb.c - arm/linux - Git at Google

 /*
  * 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 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/sched.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/mm.h>
 #include <linux/tty.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/fb.h>

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

 #ifdef MACH_HP600
 #include <asm/cpu/dac.h>
 #include <asm/hp6xx/hp6xx.h>
 #endif

 #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,
 	.ypanstep	= 8,
 	.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, HD64461_BBTDWR);
 	fb_writew(height, HD64461_BBTDHR);

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

 }

 static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
 					 u16 width, u16 height, u16 color)
 {
 	hitfb_accel_set_dest(truecolor, dx, dy, width, height);

 	fb_writew(0x00f0, HD64461_BBTROPR);
 	fb_writew(16, HD64461_BBTMDR);
 	fb_writew(color, HD64461_GRSCR);

 	hitfb_accel_start(truecolor);
 }

 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;

 	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 {
 		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);
 		}
 		hitfb_accel_wait();
 	}
 }

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

 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, HD64461_LCDCBAR);

 	return 0;
 }

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

 	if (blank_mode) {
 #ifdef MACH_HP600
 		sh_dac_disable(DAC_LCD_BRIGHTNESS);
 		v = fb_readw(HD64461_GPBDR);
 		v |= HD64461_GPBDR_LCDOFF;
 		fb_writew(v, HD64461_GPBDR);
 #endif
 		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);
 #ifdef MACH_HP600
 		sh_dac_enable(DAC_LCD_BRIGHTNESS);
 		v = fb_readw(HD64461_GPBDR);
 		v &= ~HD64461_GPBDR_LCDOFF;
 		fb_writew(v, HD64461_GPBDR);
 #endif
 		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);
 	}
 	return 0;
 }

 static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 			   unsigned blue, unsigned transp, struct fb_info *info)
 {
 	if (regno >= info->cmap.len)
 		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:
 		((u32 *) (info->pseudo_palette))[regno] =
 		    ((red & 0xf800)) |
 		    ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
 		break;
 	}
 	return 0;
 }

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

 int __init hitfb_init(void)
 {
 	unsigned short lcdclor, ldr3, ldvndr;
 	int size;

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

 	hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
 	hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 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;

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

 	size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
 	fb_alloc_cmap(&fb_info.cmap, size, 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 void __exit hitfb_exit(void)
 {
 	unregister_framebuffer(&fb_info);
 }

 module_init(hitfb_init);
 module_exit(hitfb_exit);

 MODULE_LICENSE("GPL");
	/*
	* 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 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/sched.h>
	#include <linux/errno.h>
	#include <linux/string.h>
	#include <linux/mm.h>
	#include <linux/tty.h>
	#include <linux/slab.h>
	#include <linux/delay.h>
	#include <linux/init.h>
	#include <linux/fb.h>

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

	#ifdef MACH_HP600
	#include <asm/cpu/dac.h>
	#include <asm/hp6xx/hp6xx.h>
	#endif

	#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,
	.ypanstep = 8,
	.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, HD64461_BBTDWR);
	fb_writew(height, HD64461_BBTDHR);

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

	}

	static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
	u16 width, u16 height, u16 color)
	{
	hitfb_accel_set_dest(truecolor, dx, dy, width, height);

	fb_writew(0x00f0, HD64461_BBTROPR);
	fb_writew(16, HD64461_BBTMDR);
	fb_writew(color, HD64461_GRSCR);

	hitfb_accel_start(truecolor);
	}

	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;

	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 {
	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);
	}
	hitfb_accel_wait();
	}
	}

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

	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, HD64461_LCDCBAR);

	return 0;
	}

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

	if (blank_mode) {
	#ifdef MACH_HP600
	sh_dac_disable(DAC_LCD_BRIGHTNESS);
	v = fb_readw(HD64461_GPBDR);
	v \|= HD64461_GPBDR_LCDOFF;
	fb_writew(v, HD64461_GPBDR);
	#endif
	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);
	#ifdef MACH_HP600
	sh_dac_enable(DAC_LCD_BRIGHTNESS);
	v = fb_readw(HD64461_GPBDR);
	v &= ~HD64461_GPBDR_LCDOFF;
	fb_writew(v, HD64461_GPBDR);
	#endif
	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);
	}
	return 0;
	}

	static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
	unsigned blue, unsigned transp, struct fb_info *info)
	{
	if (regno >= info->cmap.len)
	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:
	((u32 *) (info->pseudo_palette))[regno] =
	((red & 0xf800)) \|
	((green & 0xfc00) >> 5) \| ((blue & 0xf800) >> 11);
	break;
	}
	return 0;
	}

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

	int __init hitfb_init(void)
	{
	unsigned short lcdclor, ldr3, ldvndr;
	int size;

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

	hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
	hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 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;

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

	size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
	fb_alloc_cmap(&fb_info.cmap, size, 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 void __exit hitfb_exit(void)
	{
	unregister_framebuffer(&fb_info);
	}

	module_init(hitfb_init);
	module_exit(hitfb_exit);

	MODULE_LICENSE("GPL");