diff options
Diffstat (limited to 'drivers/mtd/chips/cfi_probe.c')
| -rw-r--r-- | drivers/mtd/chips/cfi_probe.c | 59 |
1 files changed, 10 insertions, 49 deletions
diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c index a4463a91ce3..e63e6749429 100644 --- a/drivers/mtd/chips/cfi_probe.c +++ b/drivers/mtd/chips/cfi_probe.c @@ -1,7 +1,6 @@ /* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. - $Id: cfi_probe.c,v 1.86 2005/11/29 14:48:31 gleixner Exp $ */ #include <linux/module.h> @@ -45,17 +44,14 @@ do { \ #define xip_enable(base, map, cfi) \ do { \ - cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); \ - cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); \ + cfi_qry_mode_off(base, map, cfi); \ xip_allowed(base, map); \ } while (0) #define xip_disable_qry(base, map, cfi) \ do { \ xip_disable(); \ - cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); \ - cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); \ - cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL); \ + cfi_qry_mode_on(base, map, cfi); \ } while (0) #else @@ -71,32 +67,6 @@ do { \ in: interleave,type,mode ret: table index, <0 for error */ -static int __xipram qry_present(struct map_info *map, __u32 base, - struct cfi_private *cfi) -{ - int osf = cfi->interleave * cfi->device_type; // scale factor - map_word val[3]; - map_word qry[3]; - - qry[0] = cfi_build_cmd('Q', map, cfi); - qry[1] = cfi_build_cmd('R', map, cfi); - qry[2] = cfi_build_cmd('Y', map, cfi); - - val[0] = map_read(map, base + osf*0x10); - val[1] = map_read(map, base + osf*0x11); - val[2] = map_read(map, base + osf*0x12); - - if (!map_word_equal(map, qry[0], val[0])) - return 0; - - if (!map_word_equal(map, qry[1], val[1])) - return 0; - - if (!map_word_equal(map, qry[2], val[2])) - return 0; - - return 1; // "QRY" found -} static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, unsigned long *chip_map, struct cfi_private *cfi) @@ -117,11 +87,7 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, } xip_disable(); - cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); - cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); - cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL); - - if (!qry_present(map,base,cfi)) { + if (!cfi_qry_mode_on(base, map, cfi)) { xip_enable(base, map, cfi); return 0; } @@ -142,14 +108,13 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, start = i << cfi->chipshift; /* This chip should be in read mode if it's one we've already touched. */ - if (qry_present(map, start, cfi)) { + if (cfi_qry_present(map, start, cfi)) { /* Eep. This chip also had the QRY marker. * Is it an alias for the new one? */ - cfi_send_gen_cmd(0xF0, 0, start, map, cfi, cfi->device_type, NULL); - cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL); + cfi_qry_mode_off(start, map, cfi); /* If the QRY marker goes away, it's an alias */ - if (!qry_present(map, start, cfi)) { + if (!cfi_qry_present(map, start, cfi)) { xip_allowed(base, map); printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n", map->name, base, start); @@ -159,10 +124,9 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, * unfortunate. Stick the new chip in read mode * too and if it's the same, assume it's an alias. */ /* FIXME: Use other modes to do a proper check */ - cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); - cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL); + cfi_qry_mode_off(base, map, cfi); - if (qry_present(map, base, cfi)) { + if (cfi_qry_present(map, base, cfi)) { xip_allowed(base, map); printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n", map->name, base, start); @@ -177,8 +141,7 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, cfi->numchips++; /* Put it back into Read Mode */ - cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); - cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); + cfi_qry_mode_off(base, map, cfi); xip_allowed(base, map); printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n", @@ -238,9 +201,7 @@ static int __xipram cfi_chip_setup(struct map_info *map, cfi_read_query(map, base + 0xf * ofs_factor); /* Put it back into Read Mode */ - cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); - /* ... even if it's an Intel chip */ - cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); + cfi_qry_mode_off(base, map, cfi); xip_allowed(base, map); /* Do any necessary byteswapping */ |