aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/i2c/busses
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r--drivers/i2c/busses/i2c-ali1563.c8
-rw-r--r--drivers/i2c/busses/i2c-imx.c26
-rw-r--r--drivers/i2c/busses/i2c-pca-isa.c4
-rw-r--r--drivers/i2c/busses/i2c-pca-platform.c4
-rw-r--r--drivers/i2c/busses/i2c-piix4.c4
-rw-r--r--drivers/i2c/busses/i2c-tiny-usb.c12
-rw-r--r--drivers/i2c/busses/i2c-viapro.c4
7 files changed, 32 insertions, 30 deletions
diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c
index f70f46582c6..4687af40dd5 100644
--- a/drivers/i2c/busses/i2c-ali1563.c
+++ b/drivers/i2c/busses/i2c-ali1563.c
@@ -87,9 +87,9 @@ static int ali1563_transaction(struct i2c_adapter * a, int size)
87 outb_p(inb_p(SMB_HST_CNTL2) | HST_CNTL2_START, SMB_HST_CNTL2); 87 outb_p(inb_p(SMB_HST_CNTL2) | HST_CNTL2_START, SMB_HST_CNTL2);
88 88
89 timeout = ALI1563_MAX_TIMEOUT; 89 timeout = ALI1563_MAX_TIMEOUT;
90 do 90 do {
91 msleep(1); 91 msleep(1);
92 while (((data = inb_p(SMB_HST_STS)) & HST_STS_BUSY) && --timeout); 92 } while (((data = inb_p(SMB_HST_STS)) & HST_STS_BUSY) && --timeout);
93 93
94 dev_dbg(&a->dev, "Transaction (post): STS=%02x, CNTL1=%02x, " 94 dev_dbg(&a->dev, "Transaction (post): STS=%02x, CNTL1=%02x, "
95 "CNTL2=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n", 95 "CNTL2=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n",
@@ -157,9 +157,9 @@ static int ali1563_block_start(struct i2c_adapter * a)
157 outb_p(inb_p(SMB_HST_CNTL2) | HST_CNTL2_START, SMB_HST_CNTL2); 157 outb_p(inb_p(SMB_HST_CNTL2) | HST_CNTL2_START, SMB_HST_CNTL2);
158 158
159 timeout = ALI1563_MAX_TIMEOUT; 159 timeout = ALI1563_MAX_TIMEOUT;
160 do 160 do {
161 msleep(1); 161 msleep(1);
162 while (!((data = inb_p(SMB_HST_STS)) & HST_STS_DONE) && --timeout); 162 } while (!((data = inb_p(SMB_HST_STS)) & HST_STS_DONE) && --timeout);
163 163
164 dev_dbg(&a->dev, "Block (post): STS=%02x, CNTL1=%02x, " 164 dev_dbg(&a->dev, "Block (post): STS=%02x, CNTL1=%02x, "
165 "CNTL2=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n", 165 "CNTL2=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n",
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index e3654d683e1..75bf820e7cc 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -226,7 +226,6 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
226 temp = readb(i2c_imx->base + IMX_I2C_I2CR); 226 temp = readb(i2c_imx->base + IMX_I2C_I2CR);
227 temp &= ~(I2CR_MSTA | I2CR_MTX); 227 temp &= ~(I2CR_MSTA | I2CR_MTX);
228 writeb(temp, i2c_imx->base + IMX_I2C_I2CR); 228 writeb(temp, i2c_imx->base + IMX_I2C_I2CR);
229 i2c_imx->stopped = 1;
230 } 229 }
231 if (cpu_is_mx1()) { 230 if (cpu_is_mx1()) {
232 /* 231 /*
@@ -236,8 +235,10 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
236 udelay(i2c_imx->disable_delay); 235 udelay(i2c_imx->disable_delay);
237 } 236 }
238 237
239 if (!i2c_imx->stopped) 238 if (!i2c_imx->stopped) {
240 i2c_imx_bus_busy(i2c_imx, 0); 239 i2c_imx_bus_busy(i2c_imx, 0);
240 i2c_imx->stopped = 1;
241 }
241 242
242 /* Disable I2C controller */ 243 /* Disable I2C controller */
243 writeb(0, i2c_imx->base + IMX_I2C_I2CR); 244 writeb(0, i2c_imx->base + IMX_I2C_I2CR);
@@ -496,22 +497,23 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
496 } 497 }
497 498
498 res_size = resource_size(res); 499 res_size = resource_size(res);
500
501 if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
502 ret = -EBUSY;
503 goto fail0;
504 }
505
499 base = ioremap(res->start, res_size); 506 base = ioremap(res->start, res_size);
500 if (!base) { 507 if (!base) {
501 dev_err(&pdev->dev, "ioremap failed\n"); 508 dev_err(&pdev->dev, "ioremap failed\n");
502 ret = -EIO; 509 ret = -EIO;
503 goto fail0; 510 goto fail1;
504 } 511 }
505 512
506 i2c_imx = kzalloc(sizeof(struct imx_i2c_struct), GFP_KERNEL); 513 i2c_imx = kzalloc(sizeof(struct imx_i2c_struct), GFP_KERNEL);
507 if (!i2c_imx) { 514 if (!i2c_imx) {
508 dev_err(&pdev->dev, "can't allocate interface\n"); 515 dev_err(&pdev->dev, "can't allocate interface\n");
509 ret = -ENOMEM; 516 ret = -ENOMEM;
510 goto fail1;
511 }
512
513 if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
514 ret = -EBUSY;
515 goto fail2; 517 goto fail2;
516 } 518 }
517 519
@@ -582,11 +584,11 @@ fail5:
582fail4: 584fail4:
583 clk_put(i2c_imx->clk); 585 clk_put(i2c_imx->clk);
584fail3: 586fail3:
585 release_mem_region(i2c_imx->res->start, resource_size(res));
586fail2:
587 kfree(i2c_imx); 587 kfree(i2c_imx);
588fail1: 588fail2:
589 iounmap(base); 589 iounmap(base);
590fail1:
591 release_mem_region(res->start, resource_size(res));
590fail0: 592fail0:
591 if (pdata && pdata->exit) 593 if (pdata && pdata->exit)
592 pdata->exit(&pdev->dev); 594 pdata->exit(&pdev->dev);
@@ -618,8 +620,8 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
618 620
619 clk_put(i2c_imx->clk); 621 clk_put(i2c_imx->clk);
620 622
621 release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
622 iounmap(i2c_imx->base); 623 iounmap(i2c_imx->base);
624 release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
623 kfree(i2c_imx); 625 kfree(i2c_imx);
624 return 0; 626 return 0;
625} 627}
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c
index 0ed68e2ccd2..f7346a9bd95 100644
--- a/drivers/i2c/busses/i2c-pca-isa.c
+++ b/drivers/i2c/busses/i2c-pca-isa.c
@@ -75,7 +75,7 @@ static int pca_isa_waitforcompletion(void *pd)
75 unsigned long timeout; 75 unsigned long timeout;
76 76
77 if (irq > -1) { 77 if (irq > -1) {
78 ret = wait_event_interruptible_timeout(pca_wait, 78 ret = wait_event_timeout(pca_wait,
79 pca_isa_readbyte(pd, I2C_PCA_CON) 79 pca_isa_readbyte(pd, I2C_PCA_CON)
80 & I2C_PCA_CON_SI, pca_isa_ops.timeout); 80 & I2C_PCA_CON_SI, pca_isa_ops.timeout);
81 } else { 81 } else {
@@ -96,7 +96,7 @@ static void pca_isa_resetchip(void *pd)
96} 96}
97 97
98static irqreturn_t pca_handler(int this_irq, void *dev_id) { 98static irqreturn_t pca_handler(int this_irq, void *dev_id) {
99 wake_up_interruptible(&pca_wait); 99 wake_up(&pca_wait);
100 return IRQ_HANDLED; 100 return IRQ_HANDLED;
101} 101}
102 102
diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c
index c4df9d411cd..5b2213df5ed 100644
--- a/drivers/i2c/busses/i2c-pca-platform.c
+++ b/drivers/i2c/busses/i2c-pca-platform.c
@@ -84,7 +84,7 @@ static int i2c_pca_pf_waitforcompletion(void *pd)
84 unsigned long timeout; 84 unsigned long timeout;
85 85
86 if (i2c->irq) { 86 if (i2c->irq) {
87 ret = wait_event_interruptible_timeout(i2c->wait, 87 ret = wait_event_timeout(i2c->wait,
88 i2c->algo_data.read_byte(i2c, I2C_PCA_CON) 88 i2c->algo_data.read_byte(i2c, I2C_PCA_CON)
89 & I2C_PCA_CON_SI, i2c->adap.timeout); 89 & I2C_PCA_CON_SI, i2c->adap.timeout);
90 } else { 90 } else {
@@ -122,7 +122,7 @@ static irqreturn_t i2c_pca_pf_handler(int this_irq, void *dev_id)
122 if ((i2c->algo_data.read_byte(i2c, I2C_PCA_CON) & I2C_PCA_CON_SI) == 0) 122 if ((i2c->algo_data.read_byte(i2c, I2C_PCA_CON) & I2C_PCA_CON_SI) == 0)
123 return IRQ_NONE; 123 return IRQ_NONE;
124 124
125 wake_up_interruptible(&i2c->wait); 125 wake_up(&i2c->wait);
126 126
127 return IRQ_HANDLED; 127 return IRQ_HANDLED;
128} 128}
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 1e245e9cad3..e56e4b6823c 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -324,12 +324,12 @@ static int piix4_transaction(void)
324 else 324 else
325 msleep(1); 325 msleep(1);
326 326
327 while ((timeout++ < MAX_TIMEOUT) && 327 while ((++timeout < MAX_TIMEOUT) &&
328 ((temp = inb_p(SMBHSTSTS)) & 0x01)) 328 ((temp = inb_p(SMBHSTSTS)) & 0x01))
329 msleep(1); 329 msleep(1);
330 330
331 /* If the SMBus is still busy, we give up */ 331 /* If the SMBus is still busy, we give up */
332 if (timeout >= MAX_TIMEOUT) { 332 if (timeout == MAX_TIMEOUT) {
333 dev_err(&piix4_adapter.dev, "SMBus Timeout!\n"); 333 dev_err(&piix4_adapter.dev, "SMBus Timeout!\n");
334 result = -ETIMEDOUT; 334 result = -ETIMEDOUT;
335 } 335 }
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
index b1c050ff311..e29b6d5ba8e 100644
--- a/drivers/i2c/busses/i2c-tiny-usb.c
+++ b/drivers/i2c/busses/i2c-tiny-usb.c
@@ -13,6 +13,7 @@
13#include <linux/kernel.h> 13#include <linux/kernel.h>
14#include <linux/errno.h> 14#include <linux/errno.h>
15#include <linux/module.h> 15#include <linux/module.h>
16#include <linux/types.h>
16 17
17/* include interfaces to usb layer */ 18/* include interfaces to usb layer */
18#include <linux/usb.h> 19#include <linux/usb.h>
@@ -31,8 +32,8 @@
31#define CMD_I2C_IO_END (1<<1) 32#define CMD_I2C_IO_END (1<<1)
32 33
33/* i2c bit delay, default is 10us -> 100kHz */ 34/* i2c bit delay, default is 10us -> 100kHz */
34static int delay = 10; 35static unsigned short delay = 10;
35module_param(delay, int, 0); 36module_param(delay, ushort, 0);
36MODULE_PARM_DESC(delay, "bit delay in microseconds, " 37MODULE_PARM_DESC(delay, "bit delay in microseconds, "
37 "e.g. 10 for 100kHz (default is 100kHz)"); 38 "e.g. 10 for 100kHz (default is 100kHz)");
38 39
@@ -109,7 +110,7 @@ static int usb_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num)
109 110
110static u32 usb_func(struct i2c_adapter *adapter) 111static u32 usb_func(struct i2c_adapter *adapter)
111{ 112{
112 u32 func; 113 __le32 func;
113 114
114 /* get functionality from adapter */ 115 /* get functionality from adapter */
115 if (usb_read(adapter, CMD_GET_FUNC, 0, 0, &func, sizeof(func)) != 116 if (usb_read(adapter, CMD_GET_FUNC, 0, 0, &func, sizeof(func)) !=
@@ -118,7 +119,7 @@ static u32 usb_func(struct i2c_adapter *adapter)
118 return 0; 119 return 0;
119 } 120 }
120 121
121 return func; 122 return le32_to_cpu(func);
122} 123}
123 124
124/* This is the actual algorithm we define */ 125/* This is the actual algorithm we define */
@@ -216,8 +217,7 @@ static int i2c_tiny_usb_probe(struct usb_interface *interface,
216 "i2c-tiny-usb at bus %03d device %03d", 217 "i2c-tiny-usb at bus %03d device %03d",
217 dev->usb_dev->bus->busnum, dev->usb_dev->devnum); 218 dev->usb_dev->bus->busnum, dev->usb_dev->devnum);
218 219
219 if (usb_write(&dev->adapter, CMD_SET_DELAY, 220 if (usb_write(&dev->adapter, CMD_SET_DELAY, delay, 0, NULL, 0) != 0) {
220 cpu_to_le16(delay), 0, NULL, 0) != 0) {
221 dev_err(&dev->adapter.dev, 221 dev_err(&dev->adapter.dev,
222 "failure setting delay to %dus\n", delay); 222 "failure setting delay to %dus\n", delay);
223 retval = -EIO; 223 retval = -EIO;
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index e4b1543015a..a84a909e123 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -165,10 +165,10 @@ static int vt596_transaction(u8 size)
165 do { 165 do {
166 msleep(1); 166 msleep(1);
167 temp = inb_p(SMBHSTSTS); 167 temp = inb_p(SMBHSTSTS);
168 } while ((temp & 0x01) && (timeout++ < MAX_TIMEOUT)); 168 } while ((temp & 0x01) && (++timeout < MAX_TIMEOUT));
169 169
170 /* If the SMBus is still busy, we give up */ 170 /* If the SMBus is still busy, we give up */
171 if (timeout >= MAX_TIMEOUT) { 171 if (timeout == MAX_TIMEOUT) {
172 result = -ETIMEDOUT; 172 result = -ETIMEDOUT;
173 dev_err(&vt596_adapter.dev, "SMBus timeout!\n"); 173 dev_err(&vt596_adapter.dev, "SMBus timeout!\n");
174 } 174 }