From 90612b308f2a2cc8aa08fbaf6f7184f5b7b5a855 Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Fri, 18 Nov 2005 01:10:58 -0800 Subject: [PATCH] [PATCH] tpm: use ioread8 and iowrite8 Use ioread8 and iowrite8 as suggested. Signed-off-by: Kylene Hall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm_atmel.c | 47 ++++++++++++++++++++---------------- drivers/char/tpm/tpm_atmel.h | 22 +++++++++-------- 2 files changed, 38 insertions(+), 31 deletions(-) diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c index deb4b5c809..ff3654964f 100644 --- a/drivers/char/tpm/tpm_atmel.c +++ b/drivers/char/tpm/tpm_atmel.c @@ -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 */ @@ -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; } } @@ -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; @@ -102,7 +100,7 @@ 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; @@ -110,12 +108,12 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t 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 = { @@ -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); @@ -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; } @@ -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; diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h index 3c5b9a8d1c..d3478aaadd 100644 --- a/drivers/char/tpm/tpm_atmel.h +++ b/drivers/char/tpm/tpm_atmel.h @@ -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; @@ -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", ®len); @@ -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) @@ -105,18 +106,19 @@ 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); @@ -124,6 +126,6 @@ static unsigned long atmel_get_base_addr(struct tpm_vendor_specific vendor->base = (hi << 8) | lo; vendor->region_size = 2; - return 0; + return ioport_map(vendor->base, vendor->region_size); } #endif -- 2.39.5