From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Fri, 4 Nov 2005 17:26:57 +0000 (+0000)
Subject: [PATCH] ARM: Reverted 2921/1: Support for the RTC / nvram on the Comdial MP1000
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=866237eafc60637a2c9875167486f61d86892c6b;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] ARM: Reverted 2921/1: Support for the RTC / nvram on the Comdial MP1000

No longer maintained
---

diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 9e24bbd4090..1af733d0732 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -32,11 +32,9 @@
  * 		added changelog
  * 	1.2	Erik Gilling: Cobalt Networks support
  * 		Tim Hockin: general cleanup, Cobalt support
- * 	1.3	Jon Ringle: Comdial MP1000 support
- *
  */
 
-#define NVRAM_VERSION	"1.3"
+#define NVRAM_VERSION	"1.2"
 
 #include <linux/module.h>
 #include <linux/config.h>
@@ -47,7 +45,6 @@
 #define PC		1
 #define ATARI		2
 #define COBALT		3
-#define MP1000		4
 
 /* select machine configuration */
 #if defined(CONFIG_ATARI)
@@ -57,9 +54,6 @@
 #  if defined(CONFIG_COBALT)
 #    include <linux/cobalt-nvram.h>
 #    define MACH COBALT
-#  elif defined(CONFIG_MACH_MP1000)
-#    undef MACH
-#    define MACH MP1000
 #  else
 #    define MACH PC
 #  endif
@@ -118,23 +112,6 @@
 
 #endif
 
-#if MACH == MP1000
-
-/* RTC in a MP1000 */
-#define CHECK_DRIVER_INIT()	1
-
-#define MP1000_CKS_RANGE_START	0
-#define MP1000_CKS_RANGE_END	111
-#define MP1000_CKS_LOC		112
-
-#define NVRAM_BYTES		(128-NVRAM_FIRST_BYTE)
-
-#define mach_check_checksum	mp1000_check_checksum
-#define mach_set_checksum	mp1000_set_checksum
-#define mach_proc_infos		mp1000_proc_infos
-
-#endif
-
 /* Note that *all* calls to CMOS_READ and CMOS_WRITE must be done with
  * rtc_lock held. Due to the index-port/data-port design of the RTC, we
  * don't want two different things trying to get to it at once. (e.g. the
@@ -938,91 +915,6 @@ atari_proc_infos(unsigned char *nvram, char *buffer, int *len,
 
 #endif /* MACH == ATARI */
 
-#if MACH == MP1000
-
-static int
-mp1000_check_checksum(void)
-{
-	int i;
-	unsigned short sum = 0;
-	unsigned short expect;
-
-	for (i = MP1000_CKS_RANGE_START; i <= MP1000_CKS_RANGE_END; ++i)
-		sum += __nvram_read_byte(i);
-
-        expect = __nvram_read_byte(MP1000_CKS_LOC+1)<<8 |
-	    __nvram_read_byte(MP1000_CKS_LOC);
-	return ((sum & 0xffff) == expect);
-}
-
-static void
-mp1000_set_checksum(void)
-{
-	int i;
-	unsigned short sum = 0;
-
-	for (i = MP1000_CKS_RANGE_START; i <= MP1000_CKS_RANGE_END; ++i)
-		sum += __nvram_read_byte(i);
-	__nvram_write_byte(sum >> 8, MP1000_CKS_LOC + 1);
-	__nvram_write_byte(sum & 0xff, MP1000_CKS_LOC);
-}
-
-#ifdef CONFIG_PROC_FS
-
-#define         SERVER_N_LEN         32
-#define         PATH_N_LEN           32
-#define         FILE_N_LEN           32
-#define         NVRAM_MAGIC_SIG      0xdead
-
-typedef struct NvRamImage
-{
-	unsigned short int    magic;
-	unsigned short int    mode;
-	char                  fname[FILE_N_LEN];
-	char                  path[PATH_N_LEN];
-	char                  server[SERVER_N_LEN];
-	char                  pad[12];
-} NvRam;
-
-static int
-mp1000_proc_infos(unsigned char *nvram, char *buffer, int *len,
-    off_t *begin, off_t offset, int size)
-{
-	int checksum;
-        NvRam* nv = (NvRam*)nvram;
-
-	spin_lock_irq(&rtc_lock);
-	checksum = __nvram_check_checksum();
-	spin_unlock_irq(&rtc_lock);
-
-	PRINT_PROC("Checksum status: %svalid\n", checksum ? "" : "not ");
-
-        switch( nv->mode )
-        {
-           case 0 :
-                    PRINT_PROC( "\tMode 0, tftp prompt\n" );
-                    break;
-           case 1 :
-                    PRINT_PROC( "\tMode 1, booting from disk\n" );
-                    break;
-           case 2 :
-                    PRINT_PROC( "\tMode 2, Alternate boot from disk /boot/%s\n", nv->fname );
-                    break;
-           case 3 :
-                    PRINT_PROC( "\tMode 3, Booting from net:\n" );
-                    PRINT_PROC( "\t\t%s:%s%s\n",nv->server, nv->path, nv->fname );
-                    break;
-           default:
-                    PRINT_PROC( "\tInconsistant nvram?\n" );
-                    break;
-        }
-
-	return 1;
-}
-#endif
-
-#endif /* MACH == MP1000 */
-
 MODULE_LICENSE("GPL");
 
 EXPORT_SYMBOL(__nvram_read_byte);