summaryrefslogtreecommitdiffstats
path: root/drivers/i2c/busses/i2c-ali1563.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/i2c/busses/i2c-ali1563.c')
-rw-r--r--drivers/i2c/busses/i2c-ali1563.c82
1 files changed, 45 insertions, 37 deletions
diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c
index 98a1c97739b..15517d78d5f 100644
--- a/drivers/i2c/busses/i2c-ali1563.c
+++ b/drivers/i2c/busses/i2c-ali1563.c
@@ -63,7 +63,7 @@
static struct pci_driver ali1563_pci_driver;
static unsigned short ali1563_smba;
-static int ali1563_transaction(struct i2c_adapter * a, int size)
+static int ali1563_transaction(struct i2c_adapter *a, int size)
{
u32 data;
int timeout;
@@ -78,7 +78,7 @@ static int ali1563_transaction(struct i2c_adapter * a, int size)
data = inb_p(SMB_HST_STS);
if (data & HST_STS_BAD) {
dev_err(&a->dev, "ali1563: Trying to reset busy device\n");
- outb_p(data | HST_STS_BAD,SMB_HST_STS);
+ outb_p(data | HST_STS_BAD, SMB_HST_STS);
data = inb_p(SMB_HST_STS);
if (data & HST_STS_BAD)
return -EBUSY;
@@ -102,10 +102,10 @@ static int ali1563_transaction(struct i2c_adapter * a, int size)
if (!timeout) {
dev_err(&a->dev, "Timeout - Trying to KILL transaction!\n");
/* Issue 'kill' to host controller */
- outb_p(HST_CNTL2_KILL,SMB_HST_CNTL2);
+ outb_p(HST_CNTL2_KILL, SMB_HST_CNTL2);
data = inb_p(SMB_HST_STS);
status = -ETIMEDOUT;
- }
+ }
/* device error - no response, ignore the autodetection case */
if (data & HST_STS_DEVERR) {
@@ -117,18 +117,18 @@ static int ali1563_transaction(struct i2c_adapter * a, int size)
if (data & HST_STS_BUSERR) {
dev_err(&a->dev, "Bus collision!\n");
/* Issue timeout, hoping it helps */
- outb_p(HST_CNTL1_TIMEOUT,SMB_HST_CNTL1);
+ outb_p(HST_CNTL1_TIMEOUT, SMB_HST_CNTL1);
}
if (data & HST_STS_FAIL) {
dev_err(&a->dev, "Cleaning fail after KILL!\n");
- outb_p(0x0,SMB_HST_CNTL2);
+ outb_p(0x0, SMB_HST_CNTL2);
}
return status;
}
-static int ali1563_block_start(struct i2c_adapter * a)
+static int ali1563_block_start(struct i2c_adapter *a)
{
u32 data;
int timeout;
@@ -142,8 +142,8 @@ static int ali1563_block_start(struct i2c_adapter * a)
data = inb_p(SMB_HST_STS);
if (data & HST_STS_BAD) {
- dev_warn(&a->dev,"ali1563: Trying to reset busy device\n");
- outb_p(data | HST_STS_BAD,SMB_HST_STS);
+ dev_warn(&a->dev, "ali1563: Trying to reset busy device\n");
+ outb_p(data | HST_STS_BAD, SMB_HST_STS);
data = inb_p(SMB_HST_STS);
if (data & HST_STS_BAD)
return -EBUSY;
@@ -184,13 +184,14 @@ static int ali1563_block_start(struct i2c_adapter * a)
return status;
}
-static int ali1563_block(struct i2c_adapter * a, union i2c_smbus_data * data, u8 rw)
+static int ali1563_block(struct i2c_adapter *a,
+ union i2c_smbus_data *data, u8 rw)
{
int i, len;
int error = 0;
/* Do we need this? */
- outb_p(HST_CNTL1_LAST,SMB_HST_CNTL1);
+ outb_p(HST_CNTL1_LAST, SMB_HST_CNTL1);
if (rw == I2C_SMBUS_WRITE) {
len = data->block[0];
@@ -198,8 +199,8 @@ static int ali1563_block(struct i2c_adapter * a, union i2c_smbus_data * data, u8
len = 1;
else if (len > 32)
len = 32;
- outb_p(len,SMB_HST_DAT0);
- outb_p(data->block[1],SMB_BLK_DAT);
+ outb_p(len, SMB_HST_DAT0);
+ outb_p(data->block[1], SMB_BLK_DAT);
} else
len = 32;
@@ -208,10 +209,12 @@ static int ali1563_block(struct i2c_adapter * a, union i2c_smbus_data * data, u8
for (i = 0; i < len; i++) {
if (rw == I2C_SMBUS_WRITE) {
outb_p(data->block[i + 1], SMB_BLK_DAT);
- if ((error = ali1563_block_start(a)))
+ error = ali1563_block_start(a);
+ if (error)
break;
} else {
- if ((error = ali1563_block_start(a)))
+ error = ali1563_block_start(a);
+ if (error)
break;
if (i == 0) {
len = inb_p(SMB_HST_DAT0);
@@ -224,25 +227,26 @@ static int ali1563_block(struct i2c_adapter * a, union i2c_smbus_data * data, u8
}
}
/* Do we need this? */
- outb_p(HST_CNTL1_LAST,SMB_HST_CNTL1);
+ outb_p(HST_CNTL1_LAST, SMB_HST_CNTL1);
return error;
}
-static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
+static s32 ali1563_access(struct i2c_adapter *a, u16 addr,
unsigned short flags, char rw, u8 cmd,
- int size, union i2c_smbus_data * data)
+ int size, union i2c_smbus_data *data)
{
int error = 0;
int timeout;
u32 reg;
for (timeout = ALI1563_MAX_TIMEOUT; timeout; timeout--) {
- if (!(reg = inb_p(SMB_HST_STS) & HST_STS_BUSY))
+ reg = inb_p(SMB_HST_STS);
+ if (!(reg & HST_STS_BUSY))
break;
}
if (!timeout)
- dev_warn(&a->dev,"SMBus not idle. HST_STS = %02x\n",reg);
- outb_p(0xff,SMB_HST_STS);
+ dev_warn(&a->dev, "SMBus not idle. HST_STS = %02x\n", reg);
+ outb_p(0xff, SMB_HST_STS);
/* Map the size to what the chip understands */
switch (size) {
@@ -268,13 +272,14 @@ static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
}
outb_p(((addr & 0x7f) << 1) | (rw & 0x01), SMB_HST_ADD);
- outb_p((inb_p(SMB_HST_CNTL2) & ~HST_CNTL2_SIZEMASK) | (size << 3), SMB_HST_CNTL2);
+ outb_p((inb_p(SMB_HST_CNTL2) & ~HST_CNTL2_SIZEMASK) |
+ (size << 3), SMB_HST_CNTL2);
/* Write the command register */
- switch(size) {
+ switch (size) {
case HST_CNTL2_BYTE:
- if (rw== I2C_SMBUS_WRITE)
+ if (rw == I2C_SMBUS_WRITE)
/* Beware it uses DAT0 register and not CMD! */
outb_p(cmd, SMB_HST_DAT0);
break;
@@ -292,11 +297,12 @@ static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
break;
case HST_CNTL2_BLOCK:
outb_p(cmd, SMB_HST_CMD);
- error = ali1563_block(a,data,rw);
+ error = ali1563_block(a, data, rw);
goto Done;
}
- if ((error = ali1563_transaction(a, size)))
+ error = ali1563_transaction(a, size);
+ if (error)
goto Done;
if ((rw == I2C_SMBUS_WRITE) || (size == HST_CNTL2_QUICK))
@@ -317,7 +323,7 @@ Done:
return error;
}
-static u32 ali1563_func(struct i2c_adapter * a)
+static u32 ali1563_func(struct i2c_adapter *a)
{
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
@@ -329,13 +335,13 @@ static int ali1563_setup(struct pci_dev *dev)
{
u16 ctrl;
- pci_read_config_word(dev,ALI1563_SMBBA,&ctrl);
+ pci_read_config_word(dev, ALI1563_SMBBA, &ctrl);
/* SMB I/O Base in high 12 bits and must be aligned with the
* size of the I/O space. */
ali1563_smba = ctrl & ~(ALI1563_SMB_IOSIZE - 1);
if (!ali1563_smba) {
- dev_warn(&dev->dev,"ali1563_smba Uninitialized\n");
+ dev_warn(&dev->dev, "ali1563_smba Uninitialized\n");
goto Err;
}
@@ -350,8 +356,8 @@ static int ali1563_setup(struct pci_dev *dev)
ctrl | ALI1563_SMB_IOEN);
pci_read_config_word(dev, ALI1563_SMBBA, &ctrl);
if (!(ctrl & ALI1563_SMB_IOEN)) {
- dev_err(&dev->dev, "I/O space still not enabled, "
- "giving up\n");
+ dev_err(&dev->dev,
+ "I/O space still not enabled, giving up\n");
goto Err;
}
}
@@ -375,7 +381,7 @@ Err:
static void ali1563_shutdown(struct pci_dev *dev)
{
- release_region(ali1563_smba,ALI1563_SMB_IOSIZE);
+ release_region(ali1563_smba, ALI1563_SMB_IOSIZE);
}
static const struct i2c_algorithm ali1563_algorithm = {
@@ -394,12 +400,14 @@ static int ali1563_probe(struct pci_dev *dev,
{
int error;
- if ((error = ali1563_setup(dev)))
+ error = ali1563_setup(dev);
+ if (error)
goto exit;
ali1563_adapter.dev.parent = &dev->dev;
snprintf(ali1563_adapter.name, sizeof(ali1563_adapter.name),
"SMBus ALi 1563 Adapter @ %04x", ali1563_smba);
- if ((error = i2c_add_adapter(&ali1563_adapter)))
+ error = i2c_add_adapter(&ali1563_adapter);
+ if (error)
goto exit_shutdown;
return 0;
@@ -421,12 +429,12 @@ static const struct pci_device_id ali1563_id_table[] = {
{},
};
-MODULE_DEVICE_TABLE (pci, ali1563_id_table);
+MODULE_DEVICE_TABLE(pci, ali1563_id_table);
static struct pci_driver ali1563_pci_driver = {
- .name = "ali1563_smbus",
+ .name = "ali1563_smbus",
.id_table = ali1563_id_table,
- .probe = ali1563_probe,
+ .probe = ali1563_probe,
.remove = ali1563_remove,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-22 13:38:52 +0000