patch-2.2.0-pre9 linux/drivers/video/cvppcfb.c

• Lines: 607
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.2.0-pre8/linux/drivers/video/cvppcfb.c
• Orig date: Thu Nov 19 09:56:28 1998

diff -u --recursive --new-file v2.2.0-pre8/linux/drivers/video/cvppcfb.c linux/drivers/video/cvppcfb.c
@@ -1,606 +0,0 @@
-/*
- * CybervisionPPC (TVP4020) low level driver for the frame buffer device
- *                          ^^^^^^^^^
- *                          literally ;)
- *
- * Copyright (c) 1998 Ilario Nardinocchi (nardinoc@CS.UniBO.IT) (v124)
- * --------------------------------------------------------------------------
- * based on linux/drivers/video/skeletonfb.c by Geert Uytterhoeven
- * --------------------------------------------------------------------------
- * TODO h/w parameters detect/modify, 8-bit CLUT, acceleration
- * --------------------------------------------------------------------------
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file README.legal in the main directory of this archive
- * for more details.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/malloc.h>
-#include <linux/delay.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-#include <asm/amigahw.h>
-#include <video/fbcon.h>
-#include <video/fbcon-cfb8.h>
-#include <video/fbcon-cfb16.h>
-#include <video/fbcon-cfb32.h>
-#include <asm/setup.h>
-#include <asm/io.h>
-
-#define ISDIGIT(a) ((a)>='0' && (a)<='9')
-
-#undef CVPPCFB_MASTER_DEBUG
-#ifdef CVPPCFB_MASTER_DEBUG
-#define FBEGIN	if (usr_startup.debug>1)\
-			printk(__FUNCTION__ " {\n")
-#define FEND	if (usr_startup.debug>1)\
-			printk("} /* " __FUNCTION__ " */\n")
-#define DPRINTK(a,b...)	if (usr_startup.debug)\
-			printk("%s: " a, __FUNCTION__ , ## b)
-#else
-#define FBEGIN
-#define FEND
-#define DPRINTK(a,b...)
-#endif 
-
-static const char cvppcfb_name[16]="CybervisionPPC";
-
-struct cvppcfb_startup {		/* startup options */
-	char font[40];
-	u32 xres;
-	u32 yres;
-	u32 bpp;
-	unsigned long debug;
-	unsigned long YANW;			/* You Are Not Welcome */
-	struct fb_monspecs monitor;
-};
-static struct cvppcfb_startup usr_startup = {
-	"\0", 640, 480, 16, 0, 1, { 31, 32, 58, 62, 0 } };
-
-#define CVPPC_BASE	0xe0000000
-#define CVPPC_SIZE	0x00800000
-static char* video_base;	/* virtual address of board video memory */
-static unsigned long video_phys;/* physical address of board video memory */
-static u32 video_size;		/* size of board video memory */
-
-struct cvppcfb_par {		/* board parameters (sort of) */
-	u32 xres;
-	u32 yres;
-	u32 vxres;
-	u32 vyres;
-	u32 vxoff;
-	u32 vyoff;
-	u32 bpp;
-	u32 clock;
-	u32 sflags;
-	u32 left;
-	u32 right;
-	u32 top;
-	u32 bottom;
-	u32 hsynclen;
-	u32 vsynclen;
-};
-
-struct cvppcfb_info {
-	struct fb_info_gen gen;
-	struct cvppcfb_par current_par;
-	int current_par_valid;
-	struct display disp;
-	struct {
-		u8 transp;
-		u8 red;
-		u8 green;
-		u8 blue;
-	} palette[256];
-	union {
-#ifdef FBCON_HAS_CFB16
-		u16 cmap16[16];
-#endif
-#ifdef FBCON_HAS_CFB32
-		u32 cmap32[16];
-#endif
-	} cmap;
-};
-static struct cvppcfb_info fb_info;
-
-/*
- * declaration of hw switch functions
- */
-static void cvppcfb_detect(void);
-static int cvppcfb_encode_fix(struct fb_fix_screeninfo* fix,
-				const void* par, struct fb_info_gen* info);
-static int cvppcfb_decode_var(const struct fb_var_screeninfo* var,
-					void* par, struct fb_info_gen* info);
-static int cvppcfb_encode_var(struct fb_var_screeninfo* var,
-				const void* par, struct fb_info_gen* info);
-static void cvppcfb_get_par(void* par, struct fb_info_gen* info);
-static void cvppcfb_set_par(const void* par, struct fb_info_gen* info);
-static int cvppcfb_getcolreg(unsigned regno,
-			unsigned* red, unsigned* green, unsigned* blue,
-				unsigned* transp, struct fb_info* info);
-static int cvppcfb_setcolreg(unsigned regno,
-			unsigned red, unsigned green, unsigned blue,
-				unsigned transp, struct fb_info* info);
-static void cvppcfb_dispsw(const void* par, struct display* disp,
-						struct fb_info_gen* info);
-
-static struct fbgen_hwswitch cvppcfb_hwswitch={
-	cvppcfb_detect, cvppcfb_encode_fix, cvppcfb_decode_var,
-	cvppcfb_encode_var, cvppcfb_get_par, cvppcfb_set_par,
-	cvppcfb_getcolreg, cvppcfb_setcolreg, NULL /* pan_display() */,
-	NULL /* blank() */, cvppcfb_dispsw
-};
-
-/*
- * declaration of ops switch functions
- */
-static int cvppcfb_open(struct fb_info* info, int user);
-static int cvppcfb_release(struct fb_info* info, int user);
-
-static struct fb_ops cvppcfb_ops={
-	cvppcfb_open, cvppcfb_release, fbgen_get_fix, fbgen_get_var,
-	fbgen_set_var, fbgen_get_cmap, fbgen_set_cmap, fbgen_pan_display,
-	fbgen_ioctl, NULL /* fb_mmap() */
-};
-
-/*
- * the actual definition of the above mentioned functions follows
- */
-
-/*
- * private functions
- */
-
-static void cvppcfb_set_modename(struct cvppcfb_info* info,
-						struct cvppcfb_startup* s) {
-
-	strcpy(info->gen.info.modename, cvppcfb_name);
-}
-
-static void cvppcfb_decode_opt(struct cvppcfb_startup* s, void* par,
-						struct cvppcfb_info* info) {
-	struct cvppcfb_par* p=(struct cvppcfb_par* )par;
-
-	memset(p, 0, sizeof(struct cvppcfb_par));
-	p->xres=p->vxres=(s->xres+7)&~7;
-	p->yres=p->vyres=s->yres;
-	p->bpp=(s->bpp+7)&~7;
-	if (p->bpp==24)
-		p->bpp=32;
-	if (p->bpp<32)
-		p->clock=6666;
-	else
-		p->clock=10000;
-}
-
-static void cvppcfb_encode_mcap(char* options, struct fb_monspecs* mcap) {
-	char* next;
-	int i=0;
-
-	while (i<4 && options) {
-		if ((next=strchr(options, ';')))
-			*(next++)='\0';
-		switch (i++) {
-			case 0:				/* vmin */
-				mcap->vfmin=(__u16 )
-					simple_strtoul(options, NULL, 0);
-				break;
-			case 1:				/* vmax */
-				mcap->vfmax=(__u16 )
-					simple_strtoul(options, NULL, 0);
-				break;
-			case 2:				/* hmin */
-				mcap->hfmin=(__u32 )
-					simple_strtoul(options, NULL, 0);
-				break;
-			case 3:				/* hmax */
-				mcap->hfmax=(__u32 )
-					simple_strtoul(options, NULL, 0);
-				break;
-		}
-		options=next;
-	}
-}
-
-static void cvppcfb_encode_mode(char* options, struct cvppcfb_startup* s) {
-	char* next;
-	int i=0;
-
-	while (i<3 && options) {
-		if ((next=strchr(options, ';')))
-			*(next++)='\0';
-		switch (i++) {
-			case 0:
-				s->xres=(u32 )
-					simple_strtoul(options, NULL, 0);
-				break;
-			case 1:
-				s->yres=(u32 )
-					simple_strtoul(options, NULL, 0);
-				break;
-			case 2:
-				s->bpp=(u32 )
-					simple_strtoul(options, NULL, 0);
-				break;
-		}
-		options=next;
-	}
-}
-
-/*
- * protected functions
- */
-
-static void cvppcfb_detect(void) {
-
-	FBEGIN;
-	FEND;
-}
-
-static int cvppcfb_encode_fix(struct fb_fix_screeninfo* fix,
-			const void* par, struct fb_info_gen* info) {
-
-	FBEGIN;
-	strcpy(fix->id, cvppcfb_name);
-	fix->smem_start=(char* )video_phys;
-	fix->smem_len=(__u32 )video_size;
-	fix->type=FB_TYPE_PACKED_PIXELS;
-	if (((struct cvppcfb_par* )par)->bpp==8)
-		fix->visual=FB_VISUAL_PSEUDOCOLOR;
-	else
-		fix->visual=FB_VISUAL_TRUECOLOR;
-	fix->xpanstep=fix->ypanstep=fix->ywrapstep=0;
-	fix->line_length=0;			/* computed by fbcon */
-	fix->mmio_start=NULL;
-	fix->mmio_len=0;
-	fix->accel=FB_ACCEL_NONE;
-	FEND;
-	return 0;
-}
-
-static int cvppcfb_decode_var(const struct fb_var_screeninfo* var,
-				void* par, struct fb_info_gen* info) {
-	struct cvppcfb_par p;
-
-	FBEGIN;
-	memset(&p, 0, sizeof(struct cvppcfb_par));
-	p.bpp=(var->bits_per_pixel+7)&~7;
-	if (p.bpp==24)
-		p.bpp=32;
-	if (p.bpp>32) {
-		DPRINTK("depth too big (%lu)\n", p.bpp);
-		return -EINVAL;
-	}
-	p.xres=(var->xres+7)&~7;
-	p.yres=var->yres;
-	if (p.xres<320 || p.yres<200 || p.xres>2048 || p.yres>2048) {
-		DPRINTK("bad resolution (%lux%lu)\n", p.xres, p.yres);
-		return -EINVAL;
-	}
-	p.vxres=(var->xres_virtual+7)&~7;
-	p.vxoff=(var->xoffset+7)&~7;
-	p.vyres=var->yres_virtual;
-	p.vyoff=var->yoffset;
-	if (p.vxres<p.xres+p.vxoff)
-		p.vxres=p.xres+p.vxoff;
-	if (p.vyres<p.yres+p.vyoff)
-		p.vyres=p.yres+p.vyoff;
-	if (p.vxres*p.vyres*p.bpp/8>video_size) {
-		DPRINTK("no memory for screen (%lux%lux%lu)\n",
-						p.vxres, p.vyres, p.bpp);
-		return -EINVAL;
-	}
-	p.sflags=var->sync&(FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT);
-	p.clock=var->pixclock;
-	if (p.clock<6666) {
-		DPRINTK("pixclock too fast (%lu)\n", p.clock);
-		return -EINVAL;
-	}
-	p.left=var->left_margin;
-	p.top=var->upper_margin;
-	p.right=var->right_margin;
-	p.bottom=var->lower_margin;
-	p.hsynclen=var->hsync_len;
-	p.vsynclen=var->vsync_len;
-	*((struct cvppcfb_par* )par)=p;
-	FEND;
-	return 0;
-}
-
-static int cvppcfb_encode_var(struct fb_var_screeninfo* var,
-				const void* par, struct fb_info_gen* info) {
-	struct cvppcfb_par* p=(struct cvppcfb_par* )par;
-	struct fb_var_screeninfo v;
-
-	FBEGIN;
-	memset(&v, 0, sizeof(struct fb_var_screeninfo));
-	v.xres=p->xres;
-	v.yres=p->yres;
-	v.xres_virtual=p->vxres;
-	v.yres_virtual=p->vyres;
-	v.xoffset=p->vxoff;
-	v.yoffset=p->vyoff;
-	v.bits_per_pixel=p->bpp;
-	switch (p->bpp) {
-		case 16:
-			v.red.offset=11;
-			v.red.length=5;
-			v.green.offset=5;
-			v.green.length=6;
-			v.blue.length=5;
-			break;
-		case 32:
-			v.transp.offset=24;
-			v.red.offset=16;
-			v.green.offset=8;
-			v.transp.length=8;
-			/* fallback */
-		case 8:
-			v.red.length=v.green.length=v.blue.length=8;
-			break;
-	}
-	v.activate=FB_ACTIVATE_NOW;
-	v.height=v.width=-1;
-	v.pixclock=p->clock;
-	v.left_margin=p->left;
-	v.right_margin=p->right;
-	v.upper_margin=p->top;
-	v.lower_margin=p->bottom;
-	v.hsync_len=p->hsynclen;
-	v.vsync_len=p->vsynclen;
-	v.sync=p->sflags;
-	v.vmode=FB_VMODE_NONINTERLACED;
-	*var=v;
-	FEND;
-	return 0;
-}
-
-static void cvppcfb_get_par(void* par, struct fb_info_gen* info) {
-	struct cvppcfb_info* i=(struct cvppcfb_info* )info;
-	
-	FBEGIN;
-	if (i->current_par_valid)
-		*((struct cvppcfb_par* )par)=i->current_par;
-	else
-		cvppcfb_decode_opt(&usr_startup, par, i);
-	FEND;
-}
-
-static void cvppcfb_set_par(const void* par, struct fb_info_gen* info) {
-	struct cvppcfb_info* i=(struct cvppcfb_info* )info;
-
-	FBEGIN;
-	i->current_par=*((struct cvppcfb_par* )par);
-	i->current_par_valid=1;
-	FEND;
-}
-
-static int cvppcfb_getcolreg(unsigned regno,
-			unsigned* red, unsigned* green, unsigned* blue,
-				unsigned* transp, struct fb_info* info) {
-	struct cvppcfb_info* i=(struct cvppcfb_info* )info;
-
-	if (regno<256) {
-		*red=i->palette[regno].red<<8|i->palette[regno].red;
-		*green=i->palette[regno].green<<8|i->palette[regno].green;
-		*blue=i->palette[regno].blue<<8|i->palette[regno].blue;
-		*transp=i->palette[regno].transp<<8|i->palette[regno].transp;
-	}
-	return regno>255;
-}
-
-static int cvppcfb_setcolreg(unsigned regno,
-			unsigned red, unsigned green, unsigned blue,
-				unsigned transp, struct fb_info* info) {
-	struct cvppcfb_info* i=(struct cvppcfb_info* )info;
-
-	if (regno<16) {
-		switch (i->current_par.bpp) {
-#ifdef FBCON_HAS_CFB8
-			case 8:
-				DPRINTK("8 bit depth not supported yet.\n");
-				return 1;
-#endif
-#ifdef FBCON_HAS_CFB16
-			case 16:
-				i->cmap.cmap16[regno]=
-					((u32 )red & 0xf800) |
-					(((u32 )green & 0xfc00)>>5) |
-					(((u32 )blue & 0xf800)>>11);
-				break;
-#endif
-#ifdef FBCON_HAS_CFB32
-			case 32:
-	   			i->cmap.cmap32[regno]=
-					(((u32 )transp & 0xff00) << 16) |
-		    			(((u32 )red & 0xff00) << 8) |
-					(((u32 )green & 0xff00)) |
-			 		(((u32 )blue & 0xff00) >> 8);
-				break;
-#endif
-		}
-	}
-	if (regno<256) {
-		i->palette[regno].red=red >> 8;
-		i->palette[regno].green=green >> 8;
-		i->palette[regno].blue=blue >> 8;
-		i->palette[regno].transp=transp >> 8;
-	}
-	return regno>255;
-}
-
-static void cvppcfb_dispsw(const void* par, struct display* disp,
-						struct fb_info_gen* info) {
-	struct cvppcfb_info* i=(struct cvppcfb_info* )info;
-	unsigned long flags;
-
-	FBEGIN;
-	save_flags(flags);
-	cli();
-	switch (((struct cvppcfb_par* )par)->bpp) {
-#ifdef FBCON_HAS_CFB8
-		case 8:
-			disp->dispsw=&fbcon_cfb8;
-			break;
-#endif
-#ifdef FBCON_HAS_CFB16
-		case 16:
-			disp->dispsw=&fbcon_cfb16;
-			disp->dispsw_data=i->cmap.cmap16;
-			break;
-#endif
-#ifdef FBCON_HAS_CFB32
-		case 32:
-			disp->dispsw=&fbcon_cfb32;
-			disp->dispsw_data=i->cmap.cmap32;
-			break;
-#endif
-		default:
-			disp->dispsw=&fbcon_dummy;
-			break;
-	}
-	restore_flags(flags);
-	FEND;
-}
-
-static int cvppcfb_open(struct fb_info* info, int user) {
-
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static int cvppcfb_release(struct fb_info* info, int user) {
-
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/*
- * public functions
- */
-
-void cvppcfb_cleanup(struct fb_info* info) {
-
-	unregister_framebuffer(info);
-}
-
-__initfunc(void cvppcfb_init(void)) {
-
-	FBEGIN;
-#ifdef CVPPCFB_MASTER_DEBUG
-	printk("cvppcfb_init():\n");
-	printk("    resolution %ldx%ldx%ld\n", usr_startup.xres,
-					usr_startup.yres, usr_startup.bpp);
-	printk("    debug: %ld, YANW: %ld\n", usr_startup.debug,
-						usr_startup.YANW);
-	printk("    monitorcap: %ld,%ld,%ld,%ld\n",
-			usr_startup.monitor.vfmin, usr_startup.monitor.vfmax,
-			usr_startup.monitor.hfmin, usr_startup.monitor.hfmax);
-#endif
-	if (usr_startup.YANW)			/* cannot probe yet */
-		return;
-	memset(&fb_info, 0, sizeof(struct cvppcfb_info));
-	video_size=CVPPC_SIZE;
-	video_phys=CVPPC_BASE;
-#ifdef CONFIG_APUS
-	video_base=(char* )
-		kernel_map(video_phys, video_size, KERNELMAP_NOCACHE_SER, NULL);
-#else
-	video_base=ioremap(video_phys, video_size);
-#endif
-	DPRINTK("video_phys=%08lx, video_base=%08lx\n", video_phys, video_base);
-	DPRINTK("phys_to_virt(video_phys)=%08lx\n", phys_to_virt(video_phys));
-	DPRINTK("virt_to_phys(video_base)=%08lx\n", virt_to_phys(video_base));
-	fb_info.disp.scrollmode=SCROLL_YREDRAW;
-	fb_info.gen.parsize=sizeof(struct cvppcfb_par);
-	fb_info.gen.fbhw=&cvppcfb_hwswitch;
-	cvppcfb_set_modename(&fb_info, &usr_startup);
-	fb_info.gen.info.flags=FBINFO_FLAG_DEFAULT;
-	fb_info.gen.info.fbops=&cvppcfb_ops;
-	fb_info.gen.info.monspecs=usr_startup.monitor;
-	fb_info.gen.info.disp=&fb_info.disp;
-	strcpy(fb_info.gen.info.fontname, usr_startup.font);
-	fb_info.gen.info.switch_con=&fbgen_switch;
-	fb_info.gen.info.updatevar=&fbgen_update_var;
-	fb_info.gen.info.blank=&fbgen_blank;
-	fbgen_get_var(&fb_info.disp.var, -1, &fb_info.gen.info);
-	if (fbgen_do_set_var(&fb_info.disp.var, 1, &fb_info.gen)<0) {
-		printk(	"cvppcfb: bad startup configuration: "
-			"unable to register.\n");
-		return;
-	}
-	fbgen_set_disp(-1, &fb_info.gen);
-	fbgen_install_cmap(0, &fb_info.gen);
-	if (register_framebuffer(&fb_info.gen.info)<0) {
-		printk("cvppcfb: unable to register.\n");
-		return;
-	}
-	printk("fb%d: %s frame buffer device, using %ldK of video memory\n",
-		GET_FB_IDX(fb_info.gen.info.node), fb_info.gen.info.modename,
-					(unsigned long )(video_size>>10));
-	MOD_INC_USE_COUNT;
-	FEND;
-}
-
-__initfunc(void cvppcfb_setup(char* options, int* ints)) {
-	char* next;
-
-	usr_startup.YANW=0;
-	DPRINTK("options: '%s'\n", options);
-	while (options) {
-		if ((next=strchr(options, ',')))
-			*(next++)='\0';
-		if (!strncmp(options, "monitorcap:", 11))
-			cvppcfb_encode_mcap(options+11, &usr_startup.monitor);
-		else if (!strncmp(options, "debug:", 6)) {
-			if (ISDIGIT(options[6]))
-				usr_startup.debug=options[6]-'0';
-			else
-				usr_startup.debug=1;
-		}
-		else if (!strncmp(options, "mode:", 5))
-			cvppcfb_encode_mode(options+5, &usr_startup);
-		else if (!strncmp(options, "font:", 5))
-			strcpy(usr_startup.font, options+5);
-		else
-			DPRINTK("unrecognized option '%s'\n", options);
-		options=next;
-	}
-#ifdef CVPPCFB_MASTER_DEBUG
-	printk("cvppcfb_setup():\n");
-	printk("    resolution %ldx%ldx%ld\n", usr_startup.xres,
-					usr_startup.yres, usr_startup.bpp);
-	printk("    debug: %ld, YANW: %ld\n", usr_startup.debug,
-						usr_startup.YANW);
-	printk("    monitorcap: %ld,%ld,%ld,%ld\n",
-			usr_startup.monitor.vfmin, usr_startup.monitor.vfmax,
-			usr_startup.monitor.hfmin, usr_startup.monitor.hfmax);
-#endif
-}
-
-/*
- * modularization
- */
-
-#ifdef MODULE
-int init_module(void) {
-
-	cvppcfb_init();
-}
-
-void cleanup_module(void) {
-
-	cvppcfb_cleanup();
-}
-#endif /* MODULE */
-