summaryrefslogtreecommitdiff
path: root/drivers/i2c/busses/i2c-i801.c
diff options
context:
space:
mode:
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-04-18 23:52:50 +0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-04-18 23:52:50 +0400
commit681e4a5e13c1c8315694eb4f44e0cdd84c9082d2 (patch)
tree699f14527c118859026e8ce0214e689d0b9c88cb /drivers/i2c/busses/i2c-i801.c
parentb960d6c43a63ebd2d8518b328da3816b833ee8cc (diff)
parentc104f1fa1ecf4ee0fc06e31b1f77630b2551be81 (diff)
downloadlinux-681e4a5e13c1c8315694eb4f44e0cdd84c9082d2.tar.xz
Merge commit 'c104f1fa1ecf4ee0fc06e31b1f77630b2551be81' into stable/for-linus-3.4
* commit 'c104f1fa1ecf4ee0fc06e31b1f77630b2551be81': (14566 commits) cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS sparc64: Eliminate obsolete __handle_softirq() function sparc64: Fix bootup crash on sun4v. kconfig: delete last traces of __enabled_ from autoconf.h Revert "kconfig: fix __enabled_ macros definition for invisible and un-selected symbols" kconfig: fix IS_ENABLED to not require all options to be defined irq_domain: fix type mismatch in debugfs output format staging: android: fix mem leaks in __persistent_ram_init() staging: vt6656: Don't leak memory in drivers/staging/vt6656/ioctl.c::private_ioctl() staging: iio: hmc5843: Fix crash in probe function. panic: fix stack dump print on direct call to panic() drivers/rtc/rtc-pl031.c: enable clock on all ST variants Revert "mm: vmscan: fix misused nr_reclaimed in shrink_mem_cgroup_zone()" hugetlb: fix race condition in hugetlb_fault() drivers/rtc/rtc-twl.c: use static register while reading time drivers/rtc/rtc-s3c.c: add placeholder for driver private data drivers/rtc/rtc-s3c.c: fix compilation error MAINTAINERS: add PCDP console maintainer memcg: do not open code accesses to res_counter members drivers/rtc/rtc-efi.c: fix section mismatch warning ...
Diffstat (limited to 'drivers/i2c/busses/i2c-i801.c')
-rw-r--r--drivers/i2c/busses/i2c-i801.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index ab26840d0c70..ae2945a5e007 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -2,7 +2,7 @@
Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker
<mdsxyz123@yahoo.com>
- Copyright (C) 2007, 2008 Jean Delvare <khali@linux-fr.org>
+ Copyright (C) 2007 - 2012 Jean Delvare <khali@linux-fr.org>
Copyright (C) 2010 Intel Corporation,
David Woodhouse <dwmw2@infradead.org>
@@ -51,6 +51,7 @@
Patsburg (PCH) IDF 0x1d72 32 hard yes yes yes
DH89xxCC (PCH) 0x2330 32 hard yes yes yes
Panther Point (PCH) 0x1e22 32 hard yes yes yes
+ Lynx Point (PCH) 0x8c22 32 hard yes yes yes
Features supported by this driver:
Software PEC no
@@ -105,7 +106,7 @@
#define SMBHSTCNT_KILL 2
/* Other settings */
-#define MAX_TIMEOUT 100
+#define MAX_RETRIES 400
#define ENABLE_INT9 0 /* set to 0x01 to enable - untested */
/* I801 command constants */
@@ -145,6 +146,7 @@
#define PCI_DEVICE_ID_INTEL_PANTHERPOINT_SMBUS 0x1e22
#define PCI_DEVICE_ID_INTEL_DH89XXCC_SMBUS 0x2330
#define PCI_DEVICE_ID_INTEL_5_3400_SERIES_SMBUS 0x3b30
+#define PCI_DEVICE_ID_INTEL_LYNXPOINT_SMBUS 0x8c22
struct i801_priv {
struct i2c_adapter adapter;
@@ -215,7 +217,7 @@ static int i801_check_post(struct i801_priv *priv, int status, int timeout)
dev_dbg(&priv->pci_dev->dev, "Terminating the current operation\n");
outb_p(inb_p(SMBHSTCNT(priv)) | SMBHSTCNT_KILL,
SMBHSTCNT(priv));
- msleep(1);
+ usleep_range(1000, 2000);
outb_p(inb_p(SMBHSTCNT(priv)) & (~SMBHSTCNT_KILL),
SMBHSTCNT(priv));
@@ -272,11 +274,11 @@ static int i801_transaction(struct i801_priv *priv, int xact)
/* We will always wait for a fraction of a second! */
do {
- msleep(1);
+ usleep_range(250, 500);
status = inb_p(SMBHSTSTS(priv));
- } while ((status & SMBHSTSTS_HOST_BUSY) && (timeout++ < MAX_TIMEOUT));
+ } while ((status & SMBHSTSTS_HOST_BUSY) && (timeout++ < MAX_RETRIES));
- result = i801_check_post(priv, status, timeout > MAX_TIMEOUT);
+ result = i801_check_post(priv, status, timeout > MAX_RETRIES);
if (result < 0)
return result;
@@ -291,12 +293,12 @@ static void i801_wait_hwpec(struct i801_priv *priv)
int status;
do {
- msleep(1);
+ usleep_range(250, 500);
status = inb_p(SMBHSTSTS(priv));
} while ((!(status & SMBHSTSTS_INTR))
- && (timeout++ < MAX_TIMEOUT));
+ && (timeout++ < MAX_RETRIES));
- if (timeout > MAX_TIMEOUT)
+ if (timeout > MAX_RETRIES)
dev_dbg(&priv->pci_dev->dev, "PEC Timeout!\n");
outb_p(status, SMBHSTSTS(priv));
@@ -380,12 +382,12 @@ static int i801_block_transaction_byte_by_byte(struct i801_priv *priv,
/* We will always wait for a fraction of a second! */
timeout = 0;
do {
- msleep(1);
+ usleep_range(250, 500);
status = inb_p(SMBHSTSTS(priv));
} while ((!(status & SMBHSTSTS_BYTE_DONE))
- && (timeout++ < MAX_TIMEOUT));
+ && (timeout++ < MAX_RETRIES));
- result = i801_check_post(priv, status, timeout > MAX_TIMEOUT);
+ result = i801_check_post(priv, status, timeout > MAX_RETRIES);
if (result < 0)
return result;
@@ -609,7 +611,7 @@ static const struct i2c_algorithm smbus_algorithm = {
.functionality = i801_func,
};
-static const struct pci_device_id i801_ids[] = {
+static DEFINE_PCI_DEVICE_TABLE(i801_ids) = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_3) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_3) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_2) },
@@ -633,6 +635,7 @@ static const struct pci_device_id i801_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF2) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_DH89XXCC_SMBUS) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PANTHERPOINT_SMBUS) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LYNXPOINT_SMBUS) },
{ 0, }
};