[PATCH] tpm: replace odd LPC init function
Realized the tpm_lpc_init function isn't really necessary. Replaced it
with vendor specific logic to find out the address the BIOS mapped the TPM
to. This patch removes the tpm_lpc_init function, enums associated with it
and calls to it. The patch also implements the replacement functionality.
Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
index 1324840..61fe14a 100644
--- a/drivers/char/tpm/tpm_atmel.c
+++ b/drivers/char/tpm/tpm_atmel.c
@@ -22,8 +22,9 @@
#include "tpm.h"
/* Atmel definitions */
-enum tpm_atmel_addr{
- TPM_ATML_BASE = 0x400
+enum tpm_atmel_addr {
+ TPM_ATMEL_BASE_ADDR_LO = 0x08,
+ TPM_ATMEL_BASE_ADDR_HI = 0x09
};
/* write status bits */
@@ -148,7 +149,6 @@
.req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL,
.req_complete_val = ATML_STATUS_DATA_AVAIL,
.req_canceled = ATML_STATUS_READY,
- .base = TPM_ATML_BASE,
.attr_group = &atmel_attr_grp,
.miscdev = { .fops = &atmel_ops, },
};
@@ -158,14 +158,16 @@
{
u8 version[4];
int rc = 0;
+ int lo, hi;
if (pci_enable_device(pci_dev))
return -EIO;
- if (tpm_lpc_bus_init(pci_dev, TPM_ATML_BASE)) {
- rc = -ENODEV;
- goto out_err;
- }
+ lo = tpm_read_index( TPM_ATMEL_BASE_ADDR_LO );
+ hi = tpm_read_index( TPM_ATMEL_BASE_ADDR_HI );
+
+ tpm_atmel.base = (hi<<8)|lo;
+ dev_dbg( &pci_dev->dev, "Operating with base: 0x%x\n", tpm_atmel.base);
/* verify that it is an Atmel part */
if (tpm_read_index(4) != 'A' || tpm_read_index(5) != 'T'