add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/video/fbdev/offb.c
..
..
@@ -141,6 +141,7 @@
141
141
 		/* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */
142
142
 		out_le32(par->cmap_adr + 0x58,
143
143
 			 in_le32(par->cmap_adr + 0x58) & ~0x20);
144
+		fallthrough;
144
145
 	case cmap_r128:
145
146
 		/* Set palette index & data */
146
147
 		out_8(par->cmap_adr + 0xb0, regno);
..
..
@@ -210,6 +211,7 @@
210
211
 				/* Clear PALETTE_ACCESS_CNTL in DAC_CNTL */
211
212
 				out_le32(par->cmap_adr + 0x58,
212
213
 					 in_le32(par->cmap_adr + 0x58) & ~0x20);
214
+				fallthrough;
213
215
 			case cmap_r128:
214
216
 				/* Set palette index & data */
215
217
 				out_8(par->cmap_adr + 0xb0, i);
..
..
@@ -284,7 +286,7 @@
284
286
 	framebuffer_release(info);
285
287
 }
286
288
 
287
-static struct fb_ops offb_ops = {
289
+static const struct fb_ops offb_ops = {
288
290
 	.owner		= THIS_MODULE,
289
291
 	.fb_destroy	= offb_destroy,
290
292
 	.fb_setcolreg	= offb_setcolreg,
..
..
@@ -318,28 +320,28 @@
318
320
 }
319
321
 
320
322
 static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp,
321
-				    const char *name, unsigned long address)
323
+				    unsigned long address)
322
324
 {
323
325
 	struct offb_par *par = (struct offb_par *) info->par;
324
326
 
325
-	if (dp && !strncmp(name, "ATY,Rage128", 11)) {
327
+	if (of_node_name_prefix(dp, "ATY,Rage128")) {
326
328
 		par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
327
329
 		if (par->cmap_adr)
328
330
 			par->cmap_type = cmap_r128;
329
-	} else if (dp && (!strncmp(name, "ATY,RageM3pA", 12)
330
-			  || !strncmp(name, "ATY,RageM3p12A", 14))) {
331
+	} else if (of_node_name_prefix(dp, "ATY,RageM3pA") ||
332
+		   of_node_name_prefix(dp, "ATY,RageM3p12A")) {
331
333
 		par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
332
334
 		if (par->cmap_adr)
333
335
 			par->cmap_type = cmap_M3A;
334
-	} else if (dp && !strncmp(name, "ATY,RageM3pB", 12)) {
336
+	} else if (of_node_name_prefix(dp, "ATY,RageM3pB")) {
335
337
 		par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
336
338
 		if (par->cmap_adr)
337
339
 			par->cmap_type = cmap_M3B;
338
-	} else if (dp && !strncmp(name, "ATY,Rage6", 9)) {
340
+	} else if (of_node_name_prefix(dp, "ATY,Rage6")) {
339
341
 		par->cmap_adr = offb_map_reg(dp, 1, 0, 0x1fff);
340
342
 		if (par->cmap_adr)
341
343
 			par->cmap_type = cmap_radeon;
342
-	} else if (!strncmp(name, "ATY,", 4)) {
344
+	} else if (of_node_name_prefix(dp, "ATY,")) {
343
345
 		unsigned long base = address & 0xff000000UL;
344
346
 		par->cmap_adr =
345
347
 			ioremap(base + 0x7ff000, 0x1000) + 0xcc0;
..
..
@@ -350,7 +352,7 @@
350
352
 		par->cmap_adr = offb_map_reg(dp, 0, 0x6000, 0x1000);
351
353
 		if (par->cmap_adr)
352
354
 			par->cmap_type = cmap_gxt2000;
353
-	} else if (dp && !strncmp(name, "vga,Display-", 12)) {
355
+	} else if (of_node_name_prefix(dp, "vga,Display-")) {
354
356
 		/* Look for AVIVO initialized by SLOF */
355
357
 		struct device_node *pciparent = of_get_parent(dp);
356
358
 		const u32 *vid, *did;
..
..
@@ -419,9 +421,13 @@
419
421
 	var = &info->var;
420
422
 	info->par = par;
421
423
 
422
-	strcpy(fix->id, "OFfb ");
423
-	strncat(fix->id, name, sizeof(fix->id) - sizeof("OFfb "));
424
-	fix->id[sizeof(fix->id) - 1] = '\0';
424
+	if (name) {
425
+		strcpy(fix->id, "OFfb ");
426
+		strncat(fix->id, name, sizeof(fix->id) - sizeof("OFfb "));
427
+		fix->id[sizeof(fix->id) - 1] = '\0';
428
+	} else
429
+		snprintf(fix->id, sizeof(fix->id), "OFfb %pOFn", dp);
430
+
425
431
 
426
432
 	var->xres = var->xres_virtual = width;
427
433
 	var->yres = var->yres_virtual = height;
..
..
@@ -434,7 +440,7 @@
434
440
 
435
441
 	par->cmap_type = cmap_unknown;
436
442
 	if (depth == 8)
437
-		offb_init_palette_hacks(info, dp, name, address);
443
+		offb_init_palette_hacks(info, dp, address);
438
444
 	else
439
445
 		fix->visual = FB_VISUAL_TRUECOLOR;
440
446
 
..
..
@@ -642,9 +648,9 @@
642
648
 		}
643
649
 #endif
644
650
 		/* kludge for valkyrie */
645
-		if (strcmp(dp->name, "valkyrie") == 0)
651
+		if (of_node_name_eq(dp, "valkyrie"))
646
652
 			address += 0x1000;
647
-		offb_init_fb(no_real_node ? "bootx" : dp->name,
653
+		offb_init_fb(no_real_node ? "bootx" : NULL,
648
654
 			     width, height, depth, pitch, address,
649
655
 			     foreign_endian, no_real_node ? NULL : dp);
650
656
 	}