summaryrefslogtreecommitdiff
path: root/drivers/i2c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/i2c')
-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
-rw-r--r--drivers/i2c/i2c-core.c7
8 files changed, 36 insertions, 33 deletions
diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c
index f70f46582c6c..4687af40dd50 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)
outb_p(inb_p(SMB_HST_CNTL2) | HST_CNTL2_START, SMB_HST_CNTL2);
timeout = ALI1563_MAX_TIMEOUT;
- do
+ do {
msleep(1);
- while (((data = inb_p(SMB_HST_STS)) & HST_STS_BUSY) && --timeout);
+ } while (((data = inb_p(SMB_HST_STS)) & HST_STS_BUSY) && --timeout);
dev_dbg(&a->dev, "Transaction (post): STS=%02x, CNTL1=%02x, "
"CNTL2=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n",
@@ -157,9 +157,9 @@ static int ali1563_block_start(struct i2c_adapter * a)
outb_p(inb_p(SMB_HST_CNTL2) | HST_CNTL2_START, SMB_HST_CNTL2);
timeout = ALI1563_MAX_TIMEOUT;
- do
+ do {
msleep(1);
- while (!((data = inb_p(SMB_HST_STS)) & HST_STS_DONE) && --timeout);
+ } while (!((data = inb_p(SMB_HST_STS)) & HST_STS_DONE) && --timeout);
dev_dbg(&a->dev, "Block (post): STS=%02x, CNTL1=%02x, "
"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 e3654d683e15..75bf820e7ccb 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)
temp = readb(i2c_imx->base + IMX_I2C_I2CR);
temp &= ~(I2CR_MSTA | I2CR_MTX);
writeb(temp, i2c_imx->base + IMX_I2C_I2CR);
- i2c_imx->stopped = 1;
}
if (cpu_is_mx1()) {
/*
@@ -236,8 +235,10 @@ static void i2c_imx_stop(struct imx_i2c_struct *i2c_imx)
udelay(i2c_imx->disable_delay);
}
- if (!i2c_imx->stopped)
+ if (!i2c_imx->stopped) {
i2c_imx_bus_busy(i2c_imx, 0);
+ i2c_imx->stopped = 1;
+ }
/* Disable I2C controller */
writeb(0, i2c_imx->base + IMX_I2C_I2CR);
@@ -496,22 +497,23 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
}
res_size = resource_size(res);
+
+ if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
+ ret = -EBUSY;
+ goto fail0;
+ }
+
base = ioremap(res->start, res_size);
if (!base) {
dev_err(&pdev->dev, "ioremap failed\n");
ret = -EIO;
- goto fail0;
+ goto fail1;
}
i2c_imx = kzalloc(sizeof(struct imx_i2c_struct), GFP_KERNEL);
if (!i2c_imx) {
dev_err(&pdev->dev, "can't allocate interface\n");
ret = -ENOMEM;
- goto fail1;
- }
-
- if (!request_mem_region(res->start, res_size, DRIVER_NAME)) {
- ret = -EBUSY;
goto fail2;
}
@@ -582,11 +584,11 @@ fail5:
fail4:
clk_put(i2c_imx->clk);
fail3:
- release_mem_region(i2c_imx->res->start, resource_size(res));
-fail2:
kfree(i2c_imx);
-fail1:
+fail2:
iounmap(base);
+fail1:
+ release_mem_region(res->start, resource_size(res));
fail0:
if (pdata && pdata->exit)
pdata->exit(&pdev->dev);
@@ -618,8 +620,8 @@ static int __exit i2c_imx_remove(struct platform_device *pdev)
clk_put(i2c_imx->clk);
- release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
iounmap(i2c_imx->base);
+ release_mem_region(i2c_imx->res->start, resource_size(i2c_imx->res));
kfree(i2c_imx);
return 0;
}
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c
index 0ed68e2ccd22..f7346a9bd95f 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)
unsigned long timeout;
if (irq > -1) {
- ret = wait_event_interruptible_timeout(pca_wait,
+ ret = wait_event_timeout(pca_wait,
pca_isa_readbyte(pd, I2C_PCA_CON)
& I2C_PCA_CON_SI, pca_isa_ops.timeout);
} else {
@@ -96,7 +96,7 @@ static void pca_isa_resetchip(void *pd)
}
static irqreturn_t pca_handler(int this_irq, void *dev_id) {
- wake_up_interruptible(&pca_wait);
+ wake_up(&pca_wait);
return IRQ_HANDLED;
}
diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c
index c4df9d411cd5..5b2213df5ed0 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)
unsigned long timeout;
if (i2c->irq) {
- ret = wait_event_interruptible_timeout(i2c->wait,
+ ret = wait_event_timeout(i2c->wait,
i2c->algo_data.read_byte(i2c, I2C_PCA_CON)
& I2C_PCA_CON_SI, i2c->adap.timeout);
} else {
@@ -122,7 +122,7 @@ static irqreturn_t i2c_pca_pf_handler(int this_irq, void *dev_id)
if ((i2c->algo_data.read_byte(i2c, I2C_PCA_CON) & I2C_PCA_CON_SI) == 0)
return IRQ_NONE;
- wake_up_interruptible(&i2c->wait);
+ wake_up(&i2c->wait);
return IRQ_HANDLED;
}
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 1e245e9cad31..e56e4b6823ca 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -324,12 +324,12 @@ static int piix4_transaction(void)
else
msleep(1);
- while ((timeout++ < MAX_TIMEOUT) &&
+ while ((++timeout < MAX_TIMEOUT) &&
((temp = inb_p(SMBHSTSTS)) & 0x01))
msleep(1);
/* If the SMBus is still busy, we give up */
- if (timeout >= MAX_TIMEOUT) {
+ if (timeout == MAX_TIMEOUT) {
dev_err(&piix4_adapter.dev, "SMBus Timeout!\n");
result = -ETIMEDOUT;
}
diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c
index b1c050ff311d..e29b6d5ba8ef 100644
--- a/drivers/i2c/busses/i2c-tiny-usb.c
+++ b/drivers/i2c/busses/i2c-tiny-usb.c
@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/module.h>
+#include <linux/types.h>
/* include interfaces to usb layer */
#include <linux/usb.h>
@@ -31,8 +32,8 @@
#define CMD_I2C_IO_END (1<<1)
/* i2c bit delay, default is 10us -> 100kHz */
-static int delay = 10;
-module_param(delay, int, 0);
+static unsigned short delay = 10;
+module_param(delay, ushort, 0);
MODULE_PARM_DESC(delay, "bit delay in microseconds, "
"e.g. 10 for 100kHz (default is 100kHz)");
@@ -109,7 +110,7 @@ static int usb_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, int num)
static u32 usb_func(struct i2c_adapter *adapter)
{
- u32 func;
+ __le32 func;
/* get functionality from adapter */
if (usb_read(adapter, CMD_GET_FUNC, 0, 0, &func, sizeof(func)) !=
@@ -118,7 +119,7 @@ static u32 usb_func(struct i2c_adapter *adapter)
return 0;
}
- return func;
+ return le32_to_cpu(func);
}
/* This is the actual algorithm we define */
@@ -216,8 +217,7 @@ static int i2c_tiny_usb_probe(struct usb_interface *interface,
"i2c-tiny-usb at bus %03d device %03d",
dev->usb_dev->bus->busnum, dev->usb_dev->devnum);
- if (usb_write(&dev->adapter, CMD_SET_DELAY,
- cpu_to_le16(delay), 0, NULL, 0) != 0) {
+ if (usb_write(&dev->adapter, CMD_SET_DELAY, delay, 0, NULL, 0) != 0) {
dev_err(&dev->adapter.dev,
"failure setting delay to %dus\n", delay);
retval = -EIO;
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index e4b1543015af..a84a909e1234 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)
do {
msleep(1);
temp = inb_p(SMBHSTSTS);
- } while ((temp & 0x01) && (timeout++ < MAX_TIMEOUT));
+ } while ((temp & 0x01) && (++timeout < MAX_TIMEOUT));
/* If the SMBus is still busy, we give up */
- if (timeout >= MAX_TIMEOUT) {
+ if (timeout == MAX_TIMEOUT) {
result = -ETIMEDOUT;
dev_err(&vt596_adapter.dev, "SMBus timeout!\n");
}
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 0ac2f90ab840..10be7b5fbe97 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -248,7 +248,7 @@ static const struct attribute_group *i2c_dev_attr_groups[] = {
NULL
};
-const static struct dev_pm_ops i2c_device_pm_ops = {
+static const struct dev_pm_ops i2c_device_pm_ops = {
.suspend = i2c_device_pm_suspend,
.resume = i2c_device_pm_resume,
};
@@ -843,6 +843,9 @@ int i2c_del_adapter(struct i2c_adapter *adap)
adap->dev.parent);
#endif
+ /* device name is gone after device_unregister */
+ dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
+
/* clean up the sysfs representation */
init_completion(&adap->dev_released);
device_unregister(&adap->dev);
@@ -855,8 +858,6 @@ int i2c_del_adapter(struct i2c_adapter *adap)
idr_remove(&i2c_adapter_idr, adap->nr);
mutex_unlock(&core_lock);
- dev_dbg(&adap->dev, "adapter [%s] unregistered\n", adap->name);
-
/* Clear the device structure in case this adapter is ever going to be
added again */
memset(&adap->dev, 0, sizeof(adap->dev));
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 13:33:59 +0000