Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker
<mdsxyz123@yahoo.com>
- Copyright (C) 2007 - 2012 Jean Delvare <jdelvare@suse.de>
+ Copyright (C) 2007 - 2014 Jean Delvare <jdelvare@suse.de>
Copyright (C) 2010 Intel Corporation,
David Woodhouse <dwmw2@infradead.org>
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Wildcat Point (PCH) 0x8ca2 32 hard yes yes yes
* Wildcat Point-LP (PCH) 0x9ca2 32 hard yes yes yes
* BayTrail (SOC) 0x0f12 32 hard yes yes yes
+ * Sunrise Point-H (PCH) 0xa123 32 hard yes yes yes
*
* Features supported by this driver:
* Software PEC no
#define PCI_DEVICE_ID_INTEL_WELLSBURG_SMBUS_MS2 0x8d7f
#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_SMBUS 0x9c22
#define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_SMBUS 0x9ca2
+#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_SMBUS 0xa123
struct i801_mux_config {
char *gpio_chip;
{
int status;
int result;
+ const struct i2c_adapter *adap = &priv->adapter;
result = i801_check_pre(priv);
if (result < 0)
if (priv->features & FEATURE_IRQ) {
outb_p(xact | SMBHSTCNT_INTREN | SMBHSTCNT_START,
SMBHSTCNT(priv));
- wait_event(priv->waitq, (status = priv->status));
+ result = wait_event_timeout(priv->waitq,
+ (status = priv->status),
+ adap->timeout);
+ if (!result) {
+ status = -ETIMEDOUT;
+ dev_warn(&priv->pci_dev->dev,
+ "Timeout waiting for interrupt!\n");
+ }
priv->status = 0;
return i801_check_post(priv, status);
}
int smbcmd;
int status;
int result;
+ const struct i2c_adapter *adap = &priv->adapter;
result = i801_check_pre(priv);
if (result < 0)
priv->data = &data->block[1];
outb_p(priv->cmd | SMBHSTCNT_START, SMBHSTCNT(priv));
- wait_event(priv->waitq, (status = priv->status));
+ result = wait_event_timeout(priv->waitq,
+ (status = priv->status),
+ adap->timeout);
+ if (!result) {
+ status = -ETIMEDOUT;
+ dev_warn(&priv->pci_dev->dev,
+ "Timeout waiting for interrupt!\n");
+ }
priv->status = 0;
return i801_check_post(priv, status);
}
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_SMBUS) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BAYTRAIL_SMBUS) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BRASWELL_SMBUS) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_SMBUS) },
{ 0, }
};
outb_p(inb_p(SMBAUXCTL(priv)) &
~(SMBAUXCTL_CRC | SMBAUXCTL_E32B), SMBAUXCTL(priv));
+ /* Default timeout in interrupt mode: 200 ms */
+ priv->adapter.timeout = HZ / 5;
+
if (priv->features & FEATURE_IRQ) {
init_waitqueue_head(&priv->waitq);
if (err) {
dev_err(&dev->dev, "Failed to allocate irq %d: %d\n",
dev->irq, err);
- goto exit_release;
+ priv->features &= ~FEATURE_IRQ;
}
- dev_info(&dev->dev, "SMBus using PCI Interrupt\n");
}
+ dev_info(&dev->dev, "SMBus using %s\n",
+ priv->features & FEATURE_IRQ ? "PCI interrupt" : "polling");
/* set up the sysfs linkage to our parent device */
priv->adapter.dev.parent = &dev->dev;
exit_free_irq:
if (priv->features & FEATURE_IRQ)
free_irq(dev->irq, priv);
-exit_release:
pci_release_region(dev, SMBBAR);
exit:
kfree(priv);