23  *                                 module parameter 'nologo={0|1}'
25  * - Revision 0.1.0  (6 Dec 1999): faster scrolling and minor fixes
47 #if 0
53 #if 0
65 #define HGA_TXT			0
73 static int hga_mode = -1;			/* 0 = txt, 1 = gfx mode */
78 #define HGA_INDEX_PORT		0x3b4		/* Register select port */
79 #define HGA_VALUE_PORT		0x3b5		/* Register value port */
80 #define HGA_MODE_PORT		0x3b8		/* Mode control port */
81 #define HGA_STATUS_PORT		0x3ba		/* Status and Config port */
82 #define HGA_GFX_PORT		0x3bf		/* Graphics control port */
86 #define HGA_CURSOR_BLINKING	0x00
87 #define HGA_CURSOR_OFF		0x20
88 #define HGA_CURSOR_SLOWBLINK	0x60
90 #define HGA_MODE_GRAPHICS	0x02
91 #define HGA_MODE_VIDEO_EN	0x08
92 #define HGA_MODE_BLINK_EN	0x20
93 #define HGA_MODE_GFX_PAGE1	0x80
95 #define HGA_STATUS_HSYNC	0x01
96 #define HGA_STATUS_VSYNC	0x80
97 #define HGA_STATUS_VIDEO	0x08
99 #define HGA_CONFIG_COL132	0x08
100 #define HGA_GFX_MODE_EN		0x01
101 #define HGA_GFX_PAGE_EN		0x02
115 	.red 		= {0, 1, 0},
116 	.green 		= {0, 1, 0},
117 	.blue 		= {0, 1, 0},
118 	.transp 	= {0, 0, 0},
134 static int release_io_port = 0;
135 static int release_io_ports = 0;
136 static bool nologo = 0;
153 	outb_p(reg+1, HGA_INDEX_PORT); outb_p(val & 0xff, HGA_VALUE_PORT);  in write_hga_w()
166 	unsigned char fillchar = 0xbf; /* magic */  in hga_clear_screen()
173 		fillchar = 0x00;  in hga_clear_screen()
175 	if (fillchar != 0xbf)  in hga_clear_screen()
185 	outb_p(0x00, HGA_GFX_PORT);  in hga_txt_mode()
186 	outb_p(0x00, HGA_STATUS_PORT);  in hga_txt_mode()
188 	write_hga_b(0x61, 0x00);	/* horizontal total */  in hga_txt_mode()
189 	write_hga_b(0x50, 0x01);	/* horizontal displayed */  in hga_txt_mode()
190 	write_hga_b(0x52, 0x02);	/* horizontal sync pos */  in hga_txt_mode()
191 	write_hga_b(0x0f, 0x03);	/* horizontal sync width */  in hga_txt_mode()
193 	write_hga_b(0x19, 0x04);	/* vertical total */  in hga_txt_mode()
194 	write_hga_b(0x06, 0x05);	/* vertical total adjust */  in hga_txt_mode()
195 	write_hga_b(0x19, 0x06);	/* vertical displayed */  in hga_txt_mode()
196 	write_hga_b(0x19, 0x07);	/* vertical sync pos */  in hga_txt_mode()
198 	write_hga_b(0x02, 0x08);	/* interlace mode */  in hga_txt_mode()
199 	write_hga_b(0x0d, 0x09);	/* maximum scanline */  in hga_txt_mode()
200 	write_hga_b(0x0c, 0x0a);	/* cursor start */  in hga_txt_mode()
201 	write_hga_b(0x0d, 0x0b);	/* cursor end */  in hga_txt_mode()
203 	write_hga_w(0x0000, 0x0c);	/* start address */  in hga_txt_mode()
204 	write_hga_w(0x0000, 0x0e);	/* cursor location */  in hga_txt_mode()
215 	outb_p(0x00, HGA_STATUS_PORT);  in hga_gfx_mode()
219 	write_hga_b(0x35, 0x00);	/* horizontal total */  in hga_gfx_mode()
220 	write_hga_b(0x2d, 0x01);	/* horizontal displayed */  in hga_gfx_mode()
221 	write_hga_b(0x2e, 0x02);	/* horizontal sync pos */  in hga_gfx_mode()
222 	write_hga_b(0x07, 0x03);	/* horizontal sync width */  in hga_gfx_mode()
224 	write_hga_b(0x5b, 0x04);	/* vertical total */  in hga_gfx_mode()
225 	write_hga_b(0x02, 0x05);	/* vertical total adjust */  in hga_gfx_mode()
226 	write_hga_b(0x57, 0x06);	/* vertical displayed */  in hga_gfx_mode()
227 	write_hga_b(0x57, 0x07);	/* vertical sync pos */  in hga_gfx_mode()
229 	write_hga_b(0x02, 0x08);	/* interlace mode */  in hga_gfx_mode()
230 	write_hga_b(0x03, 0x09);	/* maximum scanline */  in hga_gfx_mode()
231 	write_hga_b(0x00, 0x0a);	/* cursor start */  in hga_gfx_mode()
232 	write_hga_b(0x00, 0x0b);	/* cursor end */  in hga_gfx_mode()
234 	write_hga_w(0x0000, 0x0c);	/* start address */  in hga_gfx_mode()
235 	write_hga_w(0x0000, 0x0e);	/* cursor location */  in hga_gfx_mode()
249 		for (x = 0; x < 10 ; x++)  in hga_show_logo()
261 	write_hga_w(base, 0x0c);	/* start address */  in hga_pan()
272 		outb_p(0x00, HGA_MODE_PORT);	/* disable video */  in hga_blank()
281 	int count = 0;  in hga_card_detect()
285 	hga_vram_len  = 0x08000;  in hga_card_detect()
287 	hga_vram = ioremap(0xb0000, hga_vram_len);  in hga_card_detect()
291 	if (request_region(0x3b0, 12, "hgafb"))  in hga_card_detect()
293 	if (request_region(0x3bf, 1, "hgafb"))  in hga_card_detect()
299 	q = hga_vram + 0x01000;  in hga_card_detect()
303 	writew(0xaa55, p); if (readw(p) == 0xaa55) count++;  in hga_card_detect()
304 	writew(0x55aa, p); if (readw(p) == 0x55aa) count++;  in hga_card_detect()
314 	if (!test_hga_b(0x66, 0x0f))	    /* cursor low register */  in hga_card_detect()
317 	if (!test_hga_b(0x99, 0x0f))     /* cursor low register */  in hga_card_detect()
327 	for (count=0; count < 50000 && p_save == q_save; count++) {  in hga_card_detect()
335 	switch (inb_p(HGA_STATUS_PORT) & 0x70) {  in hga_card_detect()
336 		case 0x10:  in hga_card_detect()
340 		case 0x50:  in hga_card_detect()
349 	return 0;  in hga_card_detect()
352 		release_region(0x3b0, 12);  in hga_card_detect()
354 		release_region(0x3bf, 1);  in hga_card_detect()
368  *	Returns: %0
376 	return 0;  in hgafb_open()
384  *	Returns: %0
391 	return 0;  in hgafb_release()
407  *	Returns: %0
415 	return 0;  in hgafb_setcolreg()
427  *	Returns: %0 on success or %-EINVAL for failure.
445 	return 0;  in hgafb_pan_display()
453  *	Blank the screen if blank_mode != 0, else unblank.
460  * Returns: %0
466 	return 0;  in hgafb_blank()
532 		for (x = 0; x < image->width; x+= 8) {  in hgafb_imageblit()
578 	info = framebuffer_alloc(0, &pdev->dev);  in hgafb_probe()
590 	info->monspecs.hfmin = 0;  in hgafb_probe()
591 	info->monspecs.hfmax = 0;  in hgafb_probe()
594 	info->monspecs.dpms = 0;  in hgafb_probe()
598         if (register_framebuffer(info) < 0) {  in hgafb_probe()
606 	return 0;  in hgafb_probe()
624 		release_region(0x3b0, 12);  in hgafb_remove()
627 		release_region(0x3bf, 1);  in hgafb_remove()
650 		hgafb_device = platform_device_register_simple("hgafb", 0, NULL, 0);  in hgafb_init()
677 module_param(nologo, bool, 0);
678 MODULE_PARM_DESC(nologo, "Disables startup logo if != 0 (default=0)");