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linux-davinci-2.6.23
Commit ee2d49de authored by Richard Purdie's avatar Richard Purdie Committed by Thomas Gleixner
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[MTD] chips: make sharps driver usable again 

Update the pre-CFI Sharp driver sharps.c so it compiles.  map_read32 /
map_write32 no longer exist in the kernel so the driver is totally broken
as it stands.  The replacement functions use different parameters resulting
in the other changes.

Change collie to use this driver until someone works out why the cfi driver
fails on that machine.
Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Tested-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 72af3b2c
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Showing with 66 additions and 57 deletions
drivers/mtd/chips/sharp.c
View file @ ee2d49de
...@@ -4,7 +4,7 @@ ...@@ -4,7 +4,7 @@
* Copyright 2000,2001 David A. Schleef <ds@schleef.org> * Copyright 2000,2001 David A. Schleef <ds@schleef.org>
* 2000,2001 Lineo, Inc. * 2000,2001 Lineo, Inc.
* *
* $Id: sharp.c,v 1.16 2005/11/07 11:14:23 gleixner Exp $ * $Id: sharp.c,v 1.17 2005/11/29 14:28:28 gleixner Exp $
* *
* Devices supported: * Devices supported:
* LH28F016SCT Symmetrical block flash memory, 2Mx8 * LH28F016SCT Symmetrical block flash memory, 2Mx8
...@@ -160,22 +160,28 @@ struct mtd_info *sharp_probe(struct map_info *map) ...@@ -160,22 +160,28 @@ struct mtd_info *sharp_probe(struct map_info *map)
return mtd; return mtd;
} }
static inline void sharp_send_cmd(struct map_info *map, unsigned long cmd, unsigned long adr)
{
map_word map_cmd;
map_cmd.x[0] = cmd;
map_write(map, map_cmd, adr);
}
static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd) static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
{ {
unsigned long tmp; map_word tmp, read0, read4;
unsigned long base = 0; unsigned long base = 0;
u32 read0, read4;
int width = 4; int width = 4;
tmp = map_read32(map, base+0); tmp = map_read(map, base+0);
map_write32(map, CMD_READ_ID, base+0); sharp_send_cmd(map, CMD_READ_ID, base+0);
read0=map_read32(map, base+0); read0 = map_read(map, base+0);
read4=map_read32(map, base+4); read4 = map_read(map, base+4);
if(read0 == 0x89898989){ if(read0.x[0] == 0x89898989){
printk("Looks like sharp flash\n"); printk("Looks like sharp flash\n");
switch(read4){ switch(read4.x[0]){
case 0xaaaaaaaa: case 0xaaaaaaaa:
case 0xa0a0a0a0: case 0xa0a0a0a0:
/* aa - LH28F016SCT-L95 2Mx8, 32 64k blocks*/ /* aa - LH28F016SCT-L95 2Mx8, 32 64k blocks*/
...@@ -197,16 +203,16 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd) ...@@ -197,16 +203,16 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
return width; return width;
#endif #endif
default: default:
printk("Sort-of looks like sharp flash, 0x%08x 0x%08x\n", printk("Sort-of looks like sharp flash, 0x%08lx 0x%08lx\n",
read0,read4); read0.x[0], read4.x[0]);
} }
}else if((map_read32(map, base+0) == CMD_READ_ID)){ }else if((map_read(map, base+0).x[0] == CMD_READ_ID)){
/* RAM, probably */ /* RAM, probably */
printk("Looks like RAM\n"); printk("Looks like RAM\n");
map_write32(map, tmp, base+0); map_write(map, tmp, base+0);
}else{ }else{
printk("Doesn't look like sharp flash, 0x%08x 0x%08x\n", printk("Doesn't look like sharp flash, 0x%08lx 0x%08lx\n",
read0,read4); read0.x[0], read4.x[0]);
} }
return 0; return 0;
...@@ -215,7 +221,8 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd) ...@@ -215,7 +221,8 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
/* This function returns with the chip->mutex lock held. */ /* This function returns with the chip->mutex lock held. */
static int sharp_wait(struct map_info *map, struct flchip *chip) static int sharp_wait(struct map_info *map, struct flchip *chip)
{ {
int status, i; int i;
map_word status;
unsigned long timeo = jiffies + HZ; unsigned long timeo = jiffies + HZ;
DECLARE_WAITQUEUE(wait, current); DECLARE_WAITQUEUE(wait, current);
int adr = 0; int adr = 0;
...@@ -225,12 +232,12 @@ retry: ...@@ -225,12 +232,12 @@ retry:
switch(chip->state){ switch(chip->state){
case FL_READY: case FL_READY:
map_write32(map,CMD_READ_STATUS,adr); sharp_send_cmd(map, CMD_READ_STATUS, adr);
chip->state = FL_STATUS; chip->state = FL_STATUS;
case FL_STATUS: case FL_STATUS:
for(i=0;i<100;i++){ for(i=0;i<100;i++){
status = map_read32(map,adr); status = map_read(map, adr);
if((status & SR_READY)==SR_READY) if((status.x[0] & SR_READY)==SR_READY)
break; break;
udelay(1); udelay(1);
} }
...@@ -254,7 +261,7 @@ retry: ...@@ -254,7 +261,7 @@ retry:
goto retry; goto retry;
} }
map_write32(map,CMD_RESET, adr); sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY; chip->state = FL_READY;
...@@ -351,37 +358,39 @@ static int sharp_write_oneword(struct map_info *map, struct flchip *chip, ...@@ -351,37 +358,39 @@ static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
int timeo; int timeo;
int try; int try;
int i; int i;
int status = 0; map_word data, status;
status.x[0] = 0;
ret = sharp_wait(map,chip); ret = sharp_wait(map,chip);
for(try=0;try<10;try++){ for(try=0;try<10;try++){
map_write32(map,CMD_BYTE_WRITE,adr); sharp_send_cmd(map, CMD_BYTE_WRITE, adr);
/* cpu_to_le32 -> hack to fix the writel be->le conversion */ /* cpu_to_le32 -> hack to fix the writel be->le conversion */
map_write32(map,cpu_to_le32(datum),adr); data.x[0] = cpu_to_le32(datum);
map_write(map, data, adr);
chip->state = FL_WRITING; chip->state = FL_WRITING;
timeo = jiffies + (HZ/2); timeo = jiffies + (HZ/2);
map_write32(map,CMD_READ_STATUS,adr); sharp_send_cmd(map, CMD_READ_STATUS, adr);
for(i=0;i<100;i++){ for(i=0;i<100;i++){
status = map_read32(map,adr); status = map_read(map, adr);
if((status & SR_READY)==SR_READY) if((status.x[0] & SR_READY) == SR_READY)
break; break;
} }
if(i==100){ if(i==100){
printk("sharp: timed out writing\n"); printk("sharp: timed out writing\n");
} }
if(!(status&SR_ERRORS)) if(!(status.x[0] & SR_ERRORS))
break; break;
printk("sharp: error writing byte at addr=%08lx status=%08x\n",adr,status); printk("sharp: error writing byte at addr=%08lx status=%08lx\n", adr, status.x[0]);
map_write32(map,CMD_CLEAR_STATUS,adr); sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
} }
map_write32(map,CMD_RESET,adr); sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY; chip->state = FL_READY;
wake_up(&chip->wq); wake_up(&chip->wq);
...@@ -434,18 +443,18 @@ static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip, ...@@ -434,18 +443,18 @@ static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip,
{ {
int ret; int ret;
unsigned long timeo; unsigned long timeo;
int status; map_word status;
DECLARE_WAITQUEUE(wait, current); DECLARE_WAITQUEUE(wait, current);
map_write32(map,CMD_READ_STATUS,adr); sharp_send_cmd(map, CMD_READ_STATUS, adr);
status = map_read32(map,adr); status = map_read(map, adr);
timeo = jiffies + HZ; timeo = jiffies + HZ;
while(time_before(jiffies, timeo)){ while(time_before(jiffies, timeo)){
map_write32(map,CMD_READ_STATUS,adr); sharp_send_cmd(map, CMD_READ_STATUS, adr);
status = map_read32(map,adr); status = map_read(map, adr);
if((status & SR_READY)==SR_READY){ if((status.x[0] & SR_READY)==SR_READY){
ret = 0; ret = 0;
goto out; goto out;
} }
...@@ -476,7 +485,7 @@ static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip, ...@@ -476,7 +485,7 @@ static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
{ {
int ret; int ret;
//int timeo; //int timeo;
int status; map_word status;
//int i; //int i;
//printk("sharp_erase_oneblock()\n"); //printk("sharp_erase_oneblock()\n");
...@@ -486,26 +495,26 @@ static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip, ...@@ -486,26 +495,26 @@ static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
sharp_unlock_oneblock(map,chip,adr); sharp_unlock_oneblock(map,chip,adr);
#endif #endif
map_write32(map,CMD_BLOCK_ERASE_1,adr); sharp_send_cmd(map, CMD_BLOCK_ERASE_1, adr);
map_write32(map,CMD_BLOCK_ERASE_2,adr); sharp_send_cmd(map, CMD_BLOCK_ERASE_2, adr);
chip->state = FL_ERASING; chip->state = FL_ERASING;
ret = sharp_do_wait_for_ready(map,chip,adr); ret = sharp_do_wait_for_ready(map,chip,adr);
if(ret<0)return ret; if(ret<0)return ret;
map_write32(map,CMD_READ_STATUS,adr); sharp_send_cmd(map, CMD_READ_STATUS, adr);
status = map_read32(map,adr); status = map_read(map, adr);
if(!(status&SR_ERRORS)){ if(!(status.x[0] & SR_ERRORS)){
map_write32(map,CMD_RESET,adr); sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY; chip->state = FL_READY;
//spin_unlock_bh(chip->mutex); //spin_unlock_bh(chip->mutex);
return 0; return 0;
} }
printk("sharp: error erasing block at addr=%08lx status=%08x\n",adr,status); printk("sharp: error erasing block at addr=%08lx status=%08lx\n", adr, status.x[0]);
map_write32(map,CMD_CLEAR_STATUS,adr); sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
//spin_unlock_bh(chip->mutex); //spin_unlock_bh(chip->mutex);
...@@ -517,20 +526,20 @@ static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip, ...@@ -517,20 +526,20 @@ static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
unsigned long adr) unsigned long adr)
{ {
int i; int i;
int status; map_word status;
map_write32(map,CMD_CLEAR_BLOCK_LOCKS_1,adr); sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_1, adr);
map_write32(map,CMD_CLEAR_BLOCK_LOCKS_2,adr); sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_2, adr);
udelay(100); udelay(100);
status = map_read32(map,adr); status = map_read(map, adr);
printk("status=%08x\n",status); printk("status=%08lx\n", status.x[0]);
for(i=0;i<1000;i++){ for(i=0;i<1000;i++){
//map_write32(map,CMD_READ_STATUS,adr); //sharp_send_cmd(map, CMD_READ_STATUS, adr);
status = map_read32(map,adr); status = map_read(map, adr);
if((status & SR_READY)==SR_READY) if((status.x[0] & SR_READY) == SR_READY)
break; break;
udelay(100); udelay(100);
} }
...@@ -538,14 +547,14 @@ static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip, ...@@ -538,14 +547,14 @@ static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
printk("sharp: timed out unlocking block\n"); printk("sharp: timed out unlocking block\n");
} }
if(!(status&SR_ERRORS)){ if(!(status.x[0] & SR_ERRORS)){
map_write32(map,CMD_RESET,adr); sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY; chip->state = FL_READY;
return; return;
} }
printk("sharp: error unlocking block at addr=%08lx status=%08x\n",adr,status); printk("sharp: error unlocking block at addr=%08lx status=%08lx\n", adr, status.x[0]);
map_write32(map,CMD_CLEAR_STATUS,adr); sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
} }
#endif #endif
......
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