Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

Pull i2c updates from Jean Delvare.

Fix up trivial conflict in drivers/i2c/busses/i2c-gpio.c due to include
file cleanup clashing with DT support addition (which did the same
cleanup)

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c-algo-bit: Don't resched on clock stretching
  i2c: Update the FSF address
  i2c: Convert drivers/i2c/muxes/* to use module_i2c_driver()
  i2c-i801: Use usleep_range to wait for command completion
  i2c-i801: Add device IDs for Intel Lynx Point
  i2c-isch: Decrease delay in command completion check loop
  i2c-gpio: Use linux/gpio.h rather than asm/gpio.h

21 files changed, 55 insertions, 57 deletions

diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801
index 2871fd500349..71f55bbcefc8 100644
--- a/Documentation/i2c/busses/i2c-i801
+++ b/Documentation/i2c/busses/i2c-i801
@@ -20,6 +20,7 @@ Supported adapters:
   * Intel Patsburg (PCH)
   * Intel DH89xxCC (PCH)
   * Intel Panther Point (PCH)
+  * Intel Lynx Point (PCH)
    Datasheets: Publicly available at the Intel website
 
 On Intel Patsburg and later chipsets, both the normal host SMBus controller
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index acba1c686c65..7f0b83219744 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -15,7 +15,8 @@
 
     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.
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.
  * ------------------------------------------------------------------------- */
 
 /* With some changes from Frodo Looijaard <frodol@dds.nl>, Kyösti Mälkki
@@ -111,7 +112,7 @@ static int sclhi(struct i2c_algo_bit_data *adap)
                                 break;
                         return -ETIMEDOUT;
                 }
-                cond_resched();
+                cpu_relax();
         }
 #ifdef DEBUG
         if (jiffies != start && i2c_debug >= 3)
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index beb9ffe2564b..73133b1063f0 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -15,7 +15,8 @@
  *
  *  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.
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *  MA 02110-1301 USA.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c
index 5eebf562ff31..5c2379522aa9 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.c
+++ b/drivers/i2c/algos/i2c-algo-pcf.c
@@ -16,7 +16,8 @@
  *
  *  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.
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *  MA 02110-1301 USA.
  *
  * With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
  * Frodo Looijaard <frodol@dds.nl>, and also from Martin Bailey
diff --git a/drivers/i2c/algos/i2c-algo-pcf.h b/drivers/i2c/algos/i2c-algo-pcf.h
index 5263a9eeb8d7..1ec703ee788d 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.h
+++ b/drivers/i2c/algos/i2c-algo-pcf.h
@@ -16,7 +16,8 @@
 
     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.           */
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.                                                  */
 /* -------------------------------------------------------------------- */
 
 /* With some changes from Frodo Looijaard <frodol@dds.nl> */
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 71c1b0a7535c..d2c5095deeac 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -103,6 +103,7 @@ config I2C_I801
             Patsburg (PCH)
             DH89xxCC (PCH)
             Panther Point (PCH)
+            Lynx Point (PCH)
 
           This driver can also be built as a module.  If so, the module
           will be called i2c-i801.
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 5d2e2816831f..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;
 
@@ -633,6 +635,7 @@ static DEFINE_PCI_DEVICE_TABLE(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, }
 };
 
diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c
index 6561d275b8cf..f90a6057508d 100644
--- a/drivers/i2c/busses/i2c-isch.c
+++ b/drivers/i2c/busses/i2c-isch.c
@@ -47,7 +47,7 @@
 #define SMBBLKDAT       (0x20 + sch_smba)
 
 /* Other settings */
-#define MAX_TIMEOUT     500
+#define MAX_RETRIES     5000
 
 /* I2C constants */
 #define SCH_QUICK               0x00
@@ -68,7 +68,7 @@ static int sch_transaction(void)
 {
         int temp;
         int result = 0;
-        int timeout = 0;
+        int retries = 0;
 
         dev_dbg(&sch_adapter.dev, "Transaction (pre): CNT=%02x, CMD=%02x, "
                 "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb(SMBHSTCNT),
@@ -100,12 +100,12 @@ static int sch_transaction(void)
         outb(inb(SMBHSTCNT) | 0x10, SMBHSTCNT);
 
         do {
-                msleep(1);
+                usleep_range(100, 200);
                 temp = inb(SMBHSTSTS) & 0x0f;
-        } while ((temp & 0x08) && (timeout++ < MAX_TIMEOUT));
+        } while ((temp & 0x08) && (retries++ < MAX_RETRIES));
 
         /* If the SMBus is still busy, we give up */
-        if (timeout > MAX_TIMEOUT) {
+        if (retries > MAX_RETRIES) {
                 dev_err(&sch_adapter.dev, "SMBus Timeout!\n");
                 result = -ETIMEDOUT;
         }
diff --git a/drivers/i2c/i2c-boardinfo.c b/drivers/i2c/i2c-boardinfo.c
index 10274ffb66d7..f24cc64e2e8c 100644
--- a/drivers/i2c/i2c-boardinfo.c
+++ b/drivers/i2c/i2c-boardinfo.c
@@ -13,7 +13,8 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index e9c18939eda7..feb7dc359186 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -14,7 +14,8 @@
 
     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.                */
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.                                                       */
 /* ------------------------------------------------------------------------- */
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h
index 9f9c57ff6708..18a8fd21d2c2 100644
--- a/drivers/i2c/i2c-core.h
+++ b/drivers/i2c/i2c-core.h
@@ -13,7 +13,8 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  */
 
 #include <linux/rwsem.h>
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 10e7f1e76586..45048323b75e 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -17,7 +17,8 @@
 
     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.
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.
 */
 
 /* Note that this is a complete rewrite of Simon Vogl's i2c-dev module.
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index f61ccc1e5ea3..9836d08f7a77 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -16,7 +16,8 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/i2c/muxes/pca9541.c b/drivers/i2c/muxes/pca9541.c
index ed699c5aa79d..e0df9b6c66b3 100644
--- a/drivers/i2c/muxes/pca9541.c
+++ b/drivers/i2c/muxes/pca9541.c
@@ -393,18 +393,7 @@ static struct i2c_driver pca9541_driver = {
         .id_table = pca9541_id,
 };
 
-static int __init pca9541_init(void)
-{
-        return i2c_add_driver(&pca9541_driver);
-}
-
-static void __exit pca9541_exit(void)
-{
-        i2c_del_driver(&pca9541_driver);
-}
-
-module_init(pca9541_init);
-module_exit(pca9541_exit);
+module_i2c_driver(pca9541_driver);
 
 MODULE_AUTHOR("Guenter Roeck <guenter.roeck@ericsson.com>");
 MODULE_DESCRIPTION("PCA9541 I2C master selector driver");
diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c
index 6f8953664636..0e37ef27aa12 100644
--- a/drivers/i2c/muxes/pca954x.c
+++ b/drivers/i2c/muxes/pca954x.c
@@ -284,18 +284,7 @@ static struct i2c_driver pca954x_driver = {
         .id_table       = pca954x_id,
 };
 
-static int __init pca954x_init(void)
-{
-        return i2c_add_driver(&pca954x_driver);
-}
-
-static void __exit pca954x_exit(void)
-{
-        i2c_del_driver(&pca954x_driver);
-}
-
-module_init(pca954x_init);
-module_exit(pca954x_exit);
+module_i2c_driver(pca954x_driver);
 
 MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
 MODULE_DESCRIPTION("PCA954x I2C mux/switch driver");
diff --git a/include/linux/i2c-algo-bit.h b/include/linux/i2c-algo-bit.h
index 584ffa0f3282..63904ba6887e 100644
--- a/include/linux/i2c-algo-bit.h
+++ b/include/linux/i2c-algo-bit.h
@@ -15,7 +15,8 @@
 
     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.                */
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.                                                       */
 /* ------------------------------------------------------------------------- */
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
diff --git a/include/linux/i2c-algo-pcf.h b/include/linux/i2c-algo-pcf.h
index 0f91a957a690..538e8f41a319 100644
--- a/include/linux/i2c-algo-pcf.h
+++ b/include/linux/i2c-algo-pcf.h
@@ -16,7 +16,8 @@
 
     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.                */
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.                                                       */
 /* ------------------------------------------------------------------------- */
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
diff --git a/include/linux/i2c-dev.h b/include/linux/i2c-dev.h
index fd53bfd26470..8a7406b2114d 100644
--- a/include/linux/i2c-dev.h
+++ b/include/linux/i2c-dev.h
@@ -16,7 +16,8 @@
 
     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.
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.
 */
 
 #ifndef _LINUX_I2C_DEV_H
diff --git a/include/linux/i2c-mux.h b/include/linux/i2c-mux.h
index 34536effd652..747f0cde4164 100644
--- a/include/linux/i2c-mux.h
+++ b/include/linux/i2c-mux.h
@@ -18,7 +18,8 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  */
 
 #ifndef _LINUX_I2C_MUX_H
diff --git a/include/linux/i2c-smbus.h b/include/linux/i2c-smbus.h
index 63f57a8c8b31..017fb40f702a 100644
--- a/include/linux/i2c-smbus.h
+++ b/include/linux/i2c-smbus.h
@@ -15,7 +15,8 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  */
 
 #ifndef _LINUX_I2C_SMBUS_H
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 8e25a9167f13..195d8b3d9cfb 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -17,7 +17,8 @@
 
     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.                */
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+    MA 02110-1301 USA.                                                       */
 /* ------------------------------------------------------------------------- */
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and