diff options
| author | Jean Delvare <khali@linux-fr.org> | 2006-06-12 23:53:02 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-22 22:10:35 +0400 |
| commit | 6dcc19dfbc84b2ea5428711b7a47146b5b1788bb (patch) | |
| tree | f4f9edfc5c66a7ef586e941172c47f2482aa4508 /drivers/i2c | |
| parent | 455f332323a17446fb66ea7b2f65f2751f1a3f06 (diff) | |
| download | linux-6dcc19dfbc84b2ea5428711b7a47146b5b1788bb.tar.xz | |
[PATCH] i2c-i801: Better pci subsystem integration
i2c-i801: Better pci subsystem integration
Integrate the i2c-i801 driver better with the pci subsystem, by
calling pci_{enable,disable}_device and requesting the I/O region
by BAR rather than direct configuration space access.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index b9e6fac8142d..94a30f5de776 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -66,7 +66,7 @@ #define SMBAUXCTL (13 + i801_smba) /* ICH4 only */ /* PCI Address Constants */ -#define SMBBA 0x020 +#define SMBBAR 4 #define SMBHSTCFG 0x040 #define SMBREV 0x008 @@ -97,7 +97,7 @@ static int i801_transaction(void); static int i801_block_transaction(union i2c_smbus_data *data, char read_write, int command, int hwpec); -static unsigned short i801_smba; +static unsigned long i801_smba; static struct pci_driver i801_driver; static struct pci_dev *I801_dev; static int isich4; @@ -105,6 +105,7 @@ static int isich4; static int __devinit i801_setup(struct pci_dev *dev) { unsigned char temp; + int err; I801_dev = dev; if ((dev->device == PCI_DEVICE_ID_INTEL_82801DB_3) || @@ -114,19 +115,28 @@ static int __devinit i801_setup(struct pci_dev *dev) else isich4 = 0; + err = pci_enable_device(dev); + if (err) { + dev_err(&dev->dev, "Failed to enable SMBus device (%d)\n", + err); + goto exit; + } + /* Determine the address of the SMBus area */ - pci_read_config_word(I801_dev, SMBBA, &i801_smba); - i801_smba &= 0xfff0; + i801_smba = pci_resource_start(dev, SMBBAR); if (!i801_smba) { dev_err(&dev->dev, "SMBus base address uninitialized, " "upgrade BIOS\n"); - return -ENODEV; + err = -ENODEV; + goto exit_disable; } - if (!request_region(i801_smba, (isich4 ? 16 : 8), i801_driver.name)) { - dev_err(&dev->dev, "I801_smb region 0x%x already in use!\n", - i801_smba); - return -EBUSY; + err = pci_request_region(dev, SMBBAR, i801_driver.name); + if (err) { + dev_err(&dev->dev, "Failed to request SMBus region " + "0x%lx-0x%lx\n", i801_smba, + pci_resource_end(dev, SMBBAR)); + goto exit_disable; } pci_read_config_byte(I801_dev, SMBHSTCFG, &temp); @@ -147,6 +157,11 @@ static int __devinit i801_setup(struct pci_dev *dev) dev_dbg(&dev->dev, "I801_smba = 0x%X\n", i801_smba); return 0; + +exit_disable: + pci_disable_device(dev); +exit: + return err; } static int i801_transaction(void) @@ -521,14 +536,15 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id i801_adapter.dev.parent = &dev->dev; snprintf(i801_adapter.name, I2C_NAME_SIZE, - "SMBus I801 adapter at %04x", i801_smba); + "SMBus I801 adapter at %04lx", i801_smba); return i2c_add_adapter(&i801_adapter); } static void __devexit i801_remove(struct pci_dev *dev) { i2c_del_adapter(&i801_adapter); - release_region(i801_smba, (isich4 ? 16 : 8)); + pci_release_region(dev, SMBBAR); + pci_disable_device(dev); } static struct pci_driver i801_driver = { |