ARM: 6904/1: MTD: Add integrator-flash feature to physmap

In the process of moving platforms away from integrator-flash
(aka armflash), add to physmap the few features that make
armflash unique:

- optionnal probing for the AFS partition type
- init() and exit() methods, used by Integrator to control
write access to the various onboard programmable components

Signed-off-by: Marc Zyngier <[e-mail]>
Acked-by: Catalin Marinas <[e-mail]>
Acked-by: Artem Bityutskiy <[e-mail]>
Acked-by: David Woodhouse <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

drivers/mtd/maps/physmap.c

···
 		if (info->mtd[i] != NULL)
 			map_destroy(info->mtd[i]);
 	}
+
+	if (physmap_data->exit)
+		physmap_data->exit(dev);
+
 	return 0;
 }
 
···
 					"map_rom",
 					NULL };
 #ifdef CONFIG_MTD_PARTITIONS
-static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };
+static const char *part_probe_types[] = { "cmdlinepart", "RedBoot",
+#ifdef CONFIG_MTD_AFS_PARTS
+					  "afs",
+#endif
+					  NULL };
 #endif
 
 static int physmap_flash_probe(struct platform_device *dev)
···
 	if (info == NULL) {
 		err = -ENOMEM;
 		goto err_out;
+	}
+
+	if (physmap_data->init) {
+		err = physmap_data->init(dev);
+		if (err)
+			goto err_out;
 	}
 
 	platform_set_drvdata(dev, info);

include/linux/mtd/physmap.h

···
 
 struct physmap_flash_data {
 	unsigned int		width;
+	int			(*init)(struct platform_device *);
+	void			(*exit)(struct platform_device *);
 	void			(*set_vpp)(struct map_info *, int);
 	unsigned int		nr_parts;
 	unsigned int		pfow_base;