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authorKylene Jo Hall <kjhall@us.ibm.com>2005-11-18 04:10:58 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-18 10:49:45 -0500
commit90612b308f2a2cc8aa08fbaf6f7184f5b7b5a855 (patch)
treeec50684193a201c7f6762287ce4f3b66bae1b04d /drivers/char/tpm
parentba3961152e7016237e15e3dfc18f08c1853d156b (diff)
[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>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm_atmel.c47
-rw-r--r--drivers/char/tpm/tpm_atmel.h22
2 files changed, 38 insertions, 31 deletions
diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
index deb4b5c80914..ff3654964fe3 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)
47 return -EIO; 47 return -EIO;
48 48
49 for (i = 0; i < 6; i++) { 49 for (i = 0; i < 6; i++) {
50 status = atmel_getb(chip, 1); 50 status = ioread8(chip->vendor->iobase + 1);
51 if ((status & ATML_STATUS_DATA_AVAIL) == 0) { 51 if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
52 dev_err(chip->dev, 52 dev_err(chip->dev, "error reading header\n");
53 "error reading header\n");
54 return -EIO; 53 return -EIO;
55 } 54 }
56 *buf++ = atmel_getb(chip, 0); 55 *buf++ = ioread8(chip->vendor->iobase);
57 } 56 }
58 57
59 /* size of the data received */ 58 /* size of the data received */
@@ -64,10 +63,9 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
64 dev_err(chip->dev, 63 dev_err(chip->dev,
65 "Recv size(%d) less than available space\n", size); 64 "Recv size(%d) less than available space\n", size);
66 for (; i < size; i++) { /* clear the waiting data anyway */ 65 for (; i < size; i++) { /* clear the waiting data anyway */
67 status = atmel_getb(chip, 1); 66 status = ioread8(chip->vendor->iobase + 1);
68 if ((status & ATML_STATUS_DATA_AVAIL) == 0) { 67 if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
69 dev_err(chip->dev, 68 dev_err(chip->dev, "error reading data\n");
70 "error reading data\n");
71 return -EIO; 69 return -EIO;
72 } 70 }
73 } 71 }
@@ -76,17 +74,17 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
76 74
77 /* read all the data available */ 75 /* read all the data available */
78 for (; i < size; i++) { 76 for (; i < size; i++) {
79 status = atmel_getb(chip, 1); 77 status = ioread8(chip->vendor->iobase + 1);
80 if ((status & ATML_STATUS_DATA_AVAIL) == 0) { 78 if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
81 dev_err(chip->dev, 79 dev_err(chip->dev, "error reading data\n");
82 "error reading data\n");
83 return -EIO; 80 return -EIO;
84 } 81 }
85 *buf++ = atmel_getb(chip, 0); 82 *buf++ = ioread8(chip->vendor->iobase);
86 } 83 }
87 84
88 /* make sure data available is gone */ 85 /* make sure data available is gone */
89 status = atmel_getb(chip, 1); 86 status = ioread8(chip->vendor->iobase + 1);
87
90 if (status & ATML_STATUS_DATA_AVAIL) { 88 if (status & ATML_STATUS_DATA_AVAIL) {
91 dev_err(chip->dev, "data available is stuck\n"); 89 dev_err(chip->dev, "data available is stuck\n");
92 return -EIO; 90 return -EIO;
@@ -102,7 +100,7 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
102 dev_dbg(chip->dev, "tpm_atml_send:\n"); 100 dev_dbg(chip->dev, "tpm_atml_send:\n");
103 for (i = 0; i < count; i++) { 101 for (i = 0; i < count; i++) {
104 dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]); 102 dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
105 atmel_putb(buf[i], chip, 0); 103 iowrite8(buf[i], chip->vendor->iobase);
106 } 104 }
107 105
108 return count; 106 return count;
@@ -110,12 +108,12 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
110 108
111static void tpm_atml_cancel(struct tpm_chip *chip) 109static void tpm_atml_cancel(struct tpm_chip *chip)
112{ 110{
113 atmel_putb(ATML_STATUS_ABORT, chip, 1); 111 iowrite8(ATML_STATUS_ABORT, chip->vendor->iobase + 1);
114} 112}
115 113
116static u8 tpm_atml_status(struct tpm_chip *chip) 114static u8 tpm_atml_status(struct tpm_chip *chip)
117{ 115{
118 return atmel_getb(chip, 1); 116 return ioread8(chip->vendor->iobase + 1);
119} 117}
120 118
121static struct file_operations atmel_ops = { 119static struct file_operations atmel_ops = {
@@ -162,7 +160,8 @@ static void atml_plat_remove(void)
162 160
163 if (chip) { 161 if (chip) {
164 if (chip->vendor->have_region) 162 if (chip->vendor->have_region)
165 atmel_release_region(chip->vendor->base, chip->vendor->region_size); 163 atmel_release_region(chip->vendor->base,
164 chip->vendor->region_size);
166 atmel_put_base_addr(chip->vendor); 165 atmel_put_base_addr(chip->vendor);
167 tpm_remove_hardware(chip->dev); 166 tpm_remove_hardware(chip->dev);
168 platform_device_unregister(pdev); 167 platform_device_unregister(pdev);
@@ -183,14 +182,19 @@ static int __init init_atmel(void)
183 182
184 driver_register(&atml_drv); 183 driver_register(&atml_drv);
185 184
186 if (atmel_get_base_addr(&tpm_atmel) != 0) { 185 if ((tpm_atmel.iobase = atmel_get_base_addr(&tpm_atmel)) == NULL) {
187 rc = -ENODEV; 186 rc = -ENODEV;
188 goto err_unreg_drv; 187 goto err_unreg_drv;
189 } 188 }
190 189
191 tpm_atmel.have_region = (atmel_request_region( tpm_atmel.base, tpm_atmel.region_size, "tpm_atmel0") == NULL) ? 0 : 1; 190 tpm_atmel.have_region =
191 (atmel_request_region
192 (tpm_atmel.base, tpm_atmel.region_size,
193 "tpm_atmel0") == NULL) ? 0 : 1;
192 194
193 if (IS_ERR(pdev = platform_device_register_simple("tpm_atmel", -1, NULL, 0 ))) { 195 if (IS_ERR
196 (pdev =
197 platform_device_register_simple("tpm_atmel", -1, NULL, 0))) {
194 rc = PTR_ERR(pdev); 198 rc = PTR_ERR(pdev);
195 goto err_rel_reg; 199 goto err_rel_reg;
196 } 200 }
@@ -202,9 +206,10 @@ static int __init init_atmel(void)
202err_unreg_dev: 206err_unreg_dev:
203 platform_device_unregister(pdev); 207 platform_device_unregister(pdev);
204err_rel_reg: 208err_rel_reg:
205 if (tpm_atmel.have_region)
206 atmel_release_region(tpm_atmel.base, tpm_atmel.region_size);
207 atmel_put_base_addr(&tpm_atmel); 209 atmel_put_base_addr(&tpm_atmel);
210 if (tpm_atmel.have_region)
211 atmel_release_region(tpm_atmel.base,
212 tpm_atmel.region_size);
208err_unreg_drv: 213err_unreg_drv:
209 driver_unregister(&atml_drv); 214 driver_unregister(&atml_drv);
210 return rc; 215 return rc;
diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h
index 3c5b9a8d1c49..d3478aaadd77 100644
--- a/drivers/char/tpm/tpm_atmel.h
+++ b/drivers/char/tpm/tpm_atmel.h
@@ -27,12 +27,14 @@
27#define atmel_putb(val, chip, offset) writeb(val, chip->vendor->iobase + offset) 27#define atmel_putb(val, chip, offset) writeb(val, chip->vendor->iobase + offset)
28#define atmel_request_region request_mem_region 28#define atmel_request_region request_mem_region
29#define atmel_release_region release_mem_region 29#define atmel_release_region release_mem_region
30static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor) 30
31static inline void atmel_put_base_addr(struct tpm_vendor_specific
32 *vendor)
31{ 33{
32 iounmap(vendor->iobase); 34 iounmap(vendor->iobase);
33} 35}
34 36
35static int atmel_get_base_addr(struct tpm_vendor_specific *vendor) 37static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor)
36{ 38{
37 struct device_node *dn; 39 struct device_node *dn;
38 unsigned long address, size; 40 unsigned long address, size;
@@ -44,11 +46,11 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
44 dn = of_find_node_by_name(NULL, "tpm"); 46 dn = of_find_node_by_name(NULL, "tpm");
45 47
46 if (!dn) 48 if (!dn)
47 return 1; 49 return NULL;
48 50
49 if (!device_is_compatible(dn, "AT97SC3201")) { 51 if (!device_is_compatible(dn, "AT97SC3201")) {
50 of_node_put(dn); 52 of_node_put(dn);
51 return 1; 53 return NULL;
52 } 54 }
53 55
54 reg = (unsigned int *) get_property(dn, "reg", &reglen); 56 reg = (unsigned int *) get_property(dn, "reg", &reglen);
@@ -71,8 +73,7 @@ static int atmel_get_base_addr(struct tpm_vendor_specific *vendor)
71 73
72 vendor->base = address; 74 vendor->base = address;
73 vendor->region_size = size; 75 vendor->region_size = size;
74 vendor->iobase = ioremap(address, size); 76 return ioremap(vendor->base, vendor->region_size);
75 return 0;
76} 77}
77#else 78#else
78#define atmel_getb(chip, offset) inb(chip->vendor->base + offset) 79#define atmel_getb(chip, offset) inb(chip->vendor->base + offset)
@@ -105,18 +106,19 @@ static int atmel_verify_tpm11(void)
105 return 0; 106 return 0;
106} 107}
107 108
108static inline void atmel_put_base_addr(struct tpm_vendor_specific *vendor) 109static inline void atmel_put_base_addr(struct tpm_vendor_specific
110 *vendor)
109{ 111{
110} 112}
111 113
112/* Determine where to talk to device */ 114/* Determine where to talk to device */
113static unsigned long atmel_get_base_addr(struct tpm_vendor_specific 115static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific
114 *vendor) 116 *vendor)
115{ 117{
116 int lo, hi; 118 int lo, hi;
117 119
118 if (atmel_verify_tpm11() != 0) 120 if (atmel_verify_tpm11() != 0)
119 return 1; 121 return NULL;
120 122
121 lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO); 123 lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO);
122 hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI); 124 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
124 vendor->base = (hi << 8) | lo; 126 vendor->base = (hi << 8) | lo;
125 vendor->region_size = 2; 127 vendor->region_size = 2;
126 128
127 return 0; 129 return ioport_map(vendor->base, vendor->region_size);
128} 130}
129#endif 131#endif