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yaml
---
r: 14405
b: refs/heads/master
c: 90612b3
h: refs/heads/master
i:
  14403: bd8aea7
v: v3
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Kylene Jo Hall authored and Linus Torvalds committed Nov 18, 2005
1 parent 019b7e3 commit acbdbd0
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Showing 3 changed files with 39 additions and 32 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: ba3961152e7016237e15e3dfc18f08c1853d156b
refs/heads/master: 90612b308f2a2cc8aa08fbaf6f7184f5b7b5a855
47 changes: 26 additions & 21 deletions trunk/drivers/char/tpm/tpm_atmel.c
Original file line number Diff line number Diff line change
Expand Up @@ -47,13 +47,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
return -EIO;

for (i = 0; i < 6; i++) {
status = atmel_getb(chip, 1);
status = ioread8(chip->vendor->iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
dev_err(chip->dev,
"error reading header\n");
dev_err(chip->dev, "error reading header\n");
return -EIO;
}
*buf++ = atmel_getb(chip, 0);
*buf++ = ioread8(chip->vendor->iobase);
}

/* size of the data received */
Expand All @@ -64,10 +63,9 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
dev_err(chip->dev,
"Recv size(%d) less than available space\n", size);
for (; i < size; i++) { /* clear the waiting data anyway */
status = atmel_getb(chip, 1);
status = ioread8(chip->vendor->iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
dev_err(chip->dev,
"error reading data\n");
dev_err(chip->dev, "error reading data\n");
return -EIO;
}
}
Expand All @@ -76,17 +74,17 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)

/* read all the data available */
for (; i < size; i++) {
status = atmel_getb(chip, 1);
status = ioread8(chip->vendor->iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
dev_err(chip->dev,
"error reading data\n");
dev_err(chip->dev, "error reading data\n");
return -EIO;
}
*buf++ = atmel_getb(chip, 0);
*buf++ = ioread8(chip->vendor->iobase);
}

/* make sure data available is gone */
status = atmel_getb(chip, 1);
status = ioread8(chip->vendor->iobase + 1);

if (status & ATML_STATUS_DATA_AVAIL) {
dev_err(chip->dev, "data available is stuck\n");
return -EIO;
Expand All @@ -102,20 +100,20 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
dev_dbg(chip->dev, "tpm_atml_send:\n");
for (i = 0; i < count; i++) {
dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
atmel_putb(buf[i], chip, 0);
iowrite8(buf[i], chip->vendor->iobase);
}

return count;
}

static void tpm_atml_cancel(struct tpm_chip *chip)
{
atmel_putb(ATML_STATUS_ABORT, chip, 1);
iowrite8(ATML_STATUS_ABORT, chip->vendor->iobase + 1);
}

static u8 tpm_atml_status(struct tpm_chip *chip)
{
return atmel_getb(chip, 1);
return ioread8(chip->vendor->iobase + 1);
}

static struct file_operations atmel_ops = {
Expand Down Expand Up @@ -162,7 +160,8 @@ static void atml_plat_remove(void)

if (chip) {
if (chip->vendor->have_region)
atmel_release_region(chip->vendor->base, chip->vendor->region_size);
atmel_release_region(chip->vendor->base,
chip->vendor->region_size);
atmel_put_base_addr(chip->vendor);
tpm_remove_hardware(chip->dev);
platform_device_unregister(pdev);
Expand All @@ -183,14 +182,19 @@ static int __init init_atmel(void)

driver_register(&atml_drv);

if (atmel_get_base_addr(&tpm_atmel) != 0) {
if ((tpm_atmel.iobase = atmel_get_base_addr(&tpm_atmel)) == NULL) {
rc = -ENODEV;
goto err_unreg_drv;
}

tpm_atmel.have_region = (atmel_request_region( tpm_atmel.base, tpm_atmel.region_size, "tpm_atmel0") == NULL) ? 0 : 1;
tpm_atmel.have_region =
(atmel_request_region
(tpm_atmel.base, tpm_atmel.region_size,
"tpm_atmel0") == NULL) ? 0 : 1;

if (IS_ERR(pdev = platform_device_register_simple("tpm_atmel", -1, NULL, 0 ))) {
if (IS_ERR
(pdev =
platform_device_register_simple("tpm_atmel", -1, NULL, 0))) {
rc = PTR_ERR(pdev);
goto err_rel_reg;
}
Expand All @@ -202,9 +206,10 @@ static int __init init_atmel(void)
err_unreg_dev:
platform_device_unregister(pdev);
err_rel_reg:
if (tpm_atmel.have_region)
atmel_release_region(tpm_atmel.base, tpm_atmel.region_size);
atmel_put_base_addr(&tpm_atmel);
if (tpm_atmel.have_region)
atmel_release_region(tpm_atmel.base,
tpm_atmel.region_size);
err_unreg_drv:
driver_unregister(&atml_drv);
return rc;
Expand Down
22 changes: 12 additions & 10 deletions trunk/drivers/char/tpm/tpm_atmel.h
Original file line number Diff line number Diff line change
Expand Up @@ -27,12 +27,14 @@
#define atmel_putb(val, chip, offset) writeb(val, chip->vendor->iobase + offset)
#define atmel_request_region request_mem_region
#define atmel_release_region release_mem_region
static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor)

static inline void atmel_put_base_addr(struct tpm_vendor_specific
*vendor)
{
iounmap(vendor->iobase);
}

static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor)
{
struct device_node *dn;
unsigned long address, size;
Expand All @@ -44,11 +46,11 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
dn = of_find_node_by_name(NULL, "tpm");

if (!dn)
return 1;
return NULL;

if (!device_is_compatible(dn, "AT97SC3201")) {
of_node_put(dn);
return 1;
return NULL;
}

reg = (unsigned int *) get_property(dn, "reg", &reglen);
Expand All @@ -71,8 +73,7 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)

vendor->base = address;
vendor->region_size = size;
vendor->iobase = ioremap(address, size);
return 0;
return ioremap(vendor->base, vendor->region_size);
}
#else
#define atmel_getb(chip, offset) inb(chip->vendor->base + offset)
Expand Down Expand Up @@ -105,25 +106,26 @@ static int atmel_verify_tpm11(void)
return 0;
}

static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor)
static inline void atmel_put_base_addr(struct tpm_vendor_specific
*vendor)
{
}

/* Determine where to talk to device */
static unsigned long atmel_get_base_addr(struct tpm_vendor_specific
static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific
*vendor)
{
int lo, hi;

if (atmel_verify_tpm11() != 0)
return 1;
return NULL;

lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO);
hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI);

vendor->base = (hi << 8) | lo;
vendor->region_size = 2;

return 0;
return ioport_map(vendor->base, vendor->region_size);
}
#endif

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