Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

[cascardo/linux.git] / drivers / i2c / busses / i2c-i801.c

diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index bbb2fbe..611b571 100644 (file)
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -33,6 +33,7 @@
     ICH7               27DA
     ESB2               269B
     ICH8               283E
+    ICH9               2930
     This driver supports several versions of Intel's I/O Controller Hubs (ICH).
     For SMBus support, they are similar to the PIIX4 and are part
     of Intel's '810' and other chipsets.
@@ -47,7 +48,6 @@
 #include <linux/kernel.h>
 #include <linux/stddef.h>
 #include <linux/delay.h>
-#include <linux/sched.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
@@ -97,6 +97,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
                                  int command, int hwpec);
 
 static unsigned long i801_smba;
+static unsigned char i801_original_hstcfg;
 static struct pci_driver i801_driver;
 static struct pci_dev *I801_dev;
 static int isich4;
@@ -122,7 +123,7 @@ static int i801_transaction(void)
                        dev_dbg(&I801_dev->dev, "Failed! (%02x)\n", temp);
                        return -1;
                } else {
-                       dev_dbg(&I801_dev->dev, "Successfull!\n");
+                       dev_dbg(&I801_dev->dev, "Successful!\n");
                }
        }
 
@@ -441,6 +442,7 @@ static const struct i2c_algorithm smbus_algorithm = {
 
 static struct i2c_adapter i801_adapter = {
        .owner          = THIS_MODULE,
+       .id             = I2C_HW_SMBUS_I801,
        .class          = I2C_CLASS_HWMON,
        .algo           = &smbus_algorithm,
 };
@@ -457,6 +459,7 @@ static struct pci_device_id i801_ids[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_17) },
        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_17) },
        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_5) },
+       { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_6) },
        { 0, }
 };
 
@@ -468,12 +471,20 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
        int err;
 
        I801_dev = dev;
-       if ((dev->device == PCI_DEVICE_ID_INTEL_82801DB_3) ||
-           (dev->device == PCI_DEVICE_ID_INTEL_82801EB_3) ||
-           (dev->device == PCI_DEVICE_ID_INTEL_ESB_4))
+       switch (dev->device) {
+       case PCI_DEVICE_ID_INTEL_82801DB_3:
+       case PCI_DEVICE_ID_INTEL_82801EB_3:
+       case PCI_DEVICE_ID_INTEL_ESB_4:
+       case PCI_DEVICE_ID_INTEL_ICH6_16:
+       case PCI_DEVICE_ID_INTEL_ICH7_17:
+       case PCI_DEVICE_ID_INTEL_ESB2_17:
+       case PCI_DEVICE_ID_INTEL_ICH8_5:
+       case PCI_DEVICE_ID_INTEL_ICH9_6:
                isich4 = 1;
-       else
+               break;
+       default:
                isich4 = 0;
+       }
 
        err = pci_enable_device(dev);
        if (err) {
@@ -500,6 +511,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
        }
 
        pci_read_config_byte(I801_dev, SMBHSTCFG, &temp);
+       i801_original_hstcfg = temp;
        temp &= ~SMBHSTCFG_I2C_EN;      /* SMBus timing */
        if (!(temp & SMBHSTCFG_HST_EN)) {
                dev_info(&dev->dev, "Enabling SMBus device\n");
@@ -512,10 +524,10 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
        else
                dev_dbg(&dev->dev, "SMBus using PCI Interrupt\n");
 
-       /* set up the driverfs linkage to our parent device */
+       /* set up the sysfs linkage to our parent device */
        i801_adapter.dev.parent = &dev->dev;
 
-       snprintf(i801_adapter.name, I2C_NAME_SIZE,
+       snprintf(i801_adapter.name, sizeof(i801_adapter.name),
                "SMBus I801 adapter at %04lx", i801_smba);
        err = i2c_add_adapter(&i801_adapter);
        if (err) {
@@ -533,6 +545,7 @@ exit:
 static void __devexit i801_remove(struct pci_dev *dev)
 {
        i2c_del_adapter(&i801_adapter);
+       pci_write_config_byte(I801_dev, SMBHSTCFG, i801_original_hstcfg);
        pci_release_region(dev, SMBBAR);
        /*
         * do not call pci_disable_device(dev) since it can cause hard hangs on
@@ -540,11 +553,33 @@ static void __devexit i801_remove(struct pci_dev *dev)
         */
 }
 
+#ifdef CONFIG_PM
+static int i801_suspend(struct pci_dev *dev, pm_message_t mesg)
+{
+       pci_save_state(dev);
+       pci_write_config_byte(dev, SMBHSTCFG, i801_original_hstcfg);
+       pci_set_power_state(dev, pci_choose_state(dev, mesg));
+       return 0;
+}
+
+static int i801_resume(struct pci_dev *dev)
+{
+       pci_set_power_state(dev, PCI_D0);
+       pci_restore_state(dev);
+       return pci_enable_device(dev);
+}
+#else
+#define i801_suspend NULL
+#define i801_resume NULL
+#endif
+
 static struct pci_driver i801_driver = {
        .name           = "i801_smbus",
        .id_table       = i801_ids,
        .probe          = i801_probe,
        .remove         = __devexit_p(i801_remove),
+       .suspend        = i801_suspend,
+       .resume         = i801_resume,
 };
 
 static int __init i2c_i801_init(void)