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[PATCH] tpm: use ioread8 and iowrite8
Use ioread8 and iowrite8 as suggested. 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>
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@ -47,13 +47,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
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return -EIO;
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for (i = 0; i < 6; i++) {
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status = atmel_getb(chip, 1);
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status = ioread8(chip->vendor->iobase + 1);
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if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
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dev_err(chip->dev,
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"error reading header\n");
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dev_err(chip->dev, "error reading header\n");
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return -EIO;
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}
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*buf++ = atmel_getb(chip, 0);
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*buf++ = ioread8(chip->vendor->iobase);
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}
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/* size of the data received */
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@ -64,10 +63,9 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
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dev_err(chip->dev,
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"Recv size(%d) less than available space\n", size);
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for (; i < size; i++) { /* clear the waiting data anyway */
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status = atmel_getb(chip, 1);
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status = ioread8(chip->vendor->iobase + 1);
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if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
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dev_err(chip->dev,
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"error reading data\n");
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dev_err(chip->dev, "error reading data\n");
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return -EIO;
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}
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}
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@ -76,17 +74,17 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
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/* read all the data available */
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for (; i < size; i++) {
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status = atmel_getb(chip, 1);
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status = ioread8(chip->vendor->iobase + 1);
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if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
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dev_err(chip->dev,
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"error reading data\n");
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dev_err(chip->dev, "error reading data\n");
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return -EIO;
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}
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*buf++ = atmel_getb(chip, 0);
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*buf++ = ioread8(chip->vendor->iobase);
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}
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/* make sure data available is gone */
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status = atmel_getb(chip, 1);
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status = ioread8(chip->vendor->iobase + 1);
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if (status & ATML_STATUS_DATA_AVAIL) {
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dev_err(chip->dev, "data available is stuck\n");
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return -EIO;
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@ -102,7 +100,7 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
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dev_dbg(chip->dev, "tpm_atml_send:\n");
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for (i = 0; i < count; i++) {
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dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
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atmel_putb(buf[i], chip, 0);
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iowrite8(buf[i], chip->vendor->iobase);
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}
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return count;
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@ -110,12 +108,12 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
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static void tpm_atml_cancel(struct tpm_chip *chip)
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{
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atmel_putb(ATML_STATUS_ABORT, chip, 1);
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iowrite8(ATML_STATUS_ABORT, chip->vendor->iobase + 1);
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}
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static u8 tpm_atml_status(struct tpm_chip *chip)
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{
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return atmel_getb(chip, 1);
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return ioread8(chip->vendor->iobase + 1);
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}
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static struct file_operations atmel_ops = {
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@ -162,7 +160,8 @@ static void atml_plat_remove(void)
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if (chip) {
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if (chip->vendor->have_region)
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atmel_release_region(chip->vendor->base, chip->vendor->region_size);
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atmel_release_region(chip->vendor->base,
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chip->vendor->region_size);
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atmel_put_base_addr(chip->vendor);
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tpm_remove_hardware(chip->dev);
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platform_device_unregister(pdev);
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@ -183,14 +182,19 @@ static int __init init_atmel(void)
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driver_register(&atml_drv);
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if (atmel_get_base_addr(&tpm_atmel) != 0) {
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if ((tpm_atmel.iobase = atmel_get_base_addr(&tpm_atmel)) == NULL) {
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rc = -ENODEV;
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goto err_unreg_drv;
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}
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tpm_atmel.have_region = (atmel_request_region( tpm_atmel.base, tpm_atmel.region_size, "tpm_atmel0") == NULL) ? 0 : 1;
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tpm_atmel.have_region =
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(atmel_request_region
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(tpm_atmel.base, tpm_atmel.region_size,
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"tpm_atmel0") == NULL) ? 0 : 1;
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if (IS_ERR(pdev = platform_device_register_simple("tpm_atmel", -1, NULL, 0 ))) {
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if (IS_ERR
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(pdev =
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platform_device_register_simple("tpm_atmel", -1, NULL, 0))) {
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rc = PTR_ERR(pdev);
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goto err_rel_reg;
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}
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@ -202,9 +206,10 @@ static int __init init_atmel(void)
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err_unreg_dev:
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platform_device_unregister(pdev);
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err_rel_reg:
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if (tpm_atmel.have_region)
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atmel_release_region(tpm_atmel.base, tpm_atmel.region_size);
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atmel_put_base_addr(&tpm_atmel);
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if (tpm_atmel.have_region)
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atmel_release_region(tpm_atmel.base,
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tpm_atmel.region_size);
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err_unreg_drv:
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driver_unregister(&atml_drv);
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return rc;
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@ -27,12 +27,14 @@
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#define atmel_putb(val, chip, offset) writeb(val, chip->vendor->iobase + offset)
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#define atmel_request_region request_mem_region
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#define atmel_release_region release_mem_region
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static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor)
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static inline void atmel_put_base_addr(struct tpm_vendor_specific
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*vendor)
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{
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iounmap(vendor->iobase);
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}
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static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
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static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor)
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{
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struct device_node *dn;
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unsigned long address, size;
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@ -44,11 +46,11 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
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dn = of_find_node_by_name(NULL, "tpm");
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if (!dn)
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return 1;
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return NULL;
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if (!device_is_compatible(dn, "AT97SC3201")) {
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of_node_put(dn);
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return 1;
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return NULL;
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}
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reg = (unsigned int *) get_property(dn, "reg", ®len);
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@ -71,8 +73,7 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
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vendor->base = address;
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vendor->region_size = size;
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vendor->iobase = ioremap(address, size);
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return 0;
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return ioremap(vendor->base, vendor->region_size);
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}
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#else
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#define atmel_getb(chip, offset) inb(chip->vendor->base + offset)
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@ -105,18 +106,19 @@ static int atmel_verify_tpm11(void)
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return 0;
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}
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static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor)
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static inline void atmel_put_base_addr(struct tpm_vendor_specific
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*vendor)
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{
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}
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/* Determine where to talk to device */
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static unsigned long atmel_get_base_addr(struct tpm_vendor_specific
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static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific
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*vendor)
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{
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int lo, hi;
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if (atmel_verify_tpm11() != 0)
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return 1;
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return NULL;
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lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO);
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hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI);
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@ -124,6 +126,6 @@ static unsigned long atmel_get_base_addr(struct tpm_vendor_specific
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vendor->base = (hi << 8) | lo;
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vendor->region_size = 2;
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return 0;
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return ioport_map(vendor->base, vendor->region_size);
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}
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#endif
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