Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (1232 commits)
  iucv: Fix bad merging.
  net_sched: Add size table for qdiscs
  net_sched: Add accessor function for packet length for qdiscs
  net_sched: Add qdisc_enqueue wrapper
  highmem: Export totalhigh_pages.
  ipv6 mcast: Omit redundant address family checks in ip6_mc_source().
  net: Use standard structures for generic socket address structures.
  ipv6 netns: Make several "global" sysctl variables namespace aware.
  netns: Use net_eq() to compare net-namespaces for optimization.
  ipv6: remove unused macros from net/ipv6.h
  ipv6: remove unused parameter from ip6_ra_control
  tcp: fix kernel panic with listening_get_next
  tcp: Remove redundant checks when setting eff_sacks
  tcp: options clean up
  tcp: Fix MD5 signatures for non-linear skbs
  sctp: Update sctp global memory limit allocations.
  sctp: remove unnecessary byteshifting, calculate directly in big-endian
  sctp: Allow only 1 listening socket with SO_REUSEADDR
  sctp: Do not leak memory on multiple listen() calls
  sctp: Support ipv6only AF_INET6 sockets.
  ...

1 files changed, 53 insertions, 21 deletions

diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 790db89db345..630406e142e5 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -13,6 +13,8 @@
 #include <linux/pci.h>
 #include <linux/module.h>
 #include <linux/seq_file.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
 #include "net_driver.h"
 #include "bitfield.h"
 #include "efx.h"
@@ -36,10 +38,12 @@
  * struct falcon_nic_data - Falcon NIC state
  * @next_buffer_table: First available buffer table id
  * @pci_dev2: The secondary PCI device if present
+ * @i2c_data: Operations and state for I2C bit-bashing algorithm
  */
 struct falcon_nic_data {
 	unsigned next_buffer_table;
 	struct pci_dev *pci_dev2;
+	struct i2c_algo_bit_data i2c_data;
 };
 
 /**************************************************************************
@@ -175,39 +179,57 @@ static inline int falcon_event_present(efx_qword_t *event)
  *
  **************************************************************************
  */
-static void falcon_setsdascl(struct efx_i2c_interface *i2c)
+static void falcon_setsda(void *data, int state)
 {
+	struct efx_nic *efx = (struct efx_nic *)data;
 	efx_oword_t reg;
 
-	falcon_read(i2c->efx, &reg, GPIO_CTL_REG_KER);
-	EFX_SET_OWORD_FIELD(reg, GPIO0_OEN, (i2c->scl ? 0 : 1));
-	EFX_SET_OWORD_FIELD(reg, GPIO3_OEN, (i2c->sda ? 0 : 1));
-	falcon_write(i2c->efx, &reg, GPIO_CTL_REG_KER);
+	falcon_read(efx, &reg, GPIO_CTL_REG_KER);
+	EFX_SET_OWORD_FIELD(reg, GPIO3_OEN, !state);
+	falcon_write(efx, &reg, GPIO_CTL_REG_KER);
 }
 
-static int falcon_getsda(struct efx_i2c_interface *i2c)
+static void falcon_setscl(void *data, int state)
 {
+	struct efx_nic *efx = (struct efx_nic *)data;
 	efx_oword_t reg;
 
-	falcon_read(i2c->efx, &reg, GPIO_CTL_REG_KER);
+	falcon_read(efx, &reg, GPIO_CTL_REG_KER);
+	EFX_SET_OWORD_FIELD(reg, GPIO0_OEN, !state);
+	falcon_write(efx, &reg, GPIO_CTL_REG_KER);
+}
+
+static int falcon_getsda(void *data)
+{
+	struct efx_nic *efx = (struct efx_nic *)data;
+	efx_oword_t reg;
+
+	falcon_read(efx, &reg, GPIO_CTL_REG_KER);
 	return EFX_OWORD_FIELD(reg, GPIO3_IN);
 }
 
-static int falcon_getscl(struct efx_i2c_interface *i2c)
+static int falcon_getscl(void *data)
 {
+	struct efx_nic *efx = (struct efx_nic *)data;
 	efx_oword_t reg;
 
-	falcon_read(i2c->efx, &reg, GPIO_CTL_REG_KER);
-	return EFX_DWORD_FIELD(reg, GPIO0_IN);
+	falcon_read(efx, &reg, GPIO_CTL_REG_KER);
+	return EFX_OWORD_FIELD(reg, GPIO0_IN);
 }
 
-static struct efx_i2c_bit_operations falcon_i2c_bit_operations = {
-	.setsda		= falcon_setsdascl,
-	.setscl		= falcon_setsdascl,
+static struct i2c_algo_bit_data falcon_i2c_bit_operations = {
+	.setsda		= falcon_setsda,
+	.setscl		= falcon_setscl,
 	.getsda		= falcon_getsda,
 	.getscl		= falcon_getscl,
-	.udelay		= 100,
-	.mdelay		= 10,
+	.udelay		= 5,
+	/*
+	 * This is the number of system clock ticks after which
+	 * i2c-algo-bit gives up waiting for SCL to become high.
+	 * It must be at least 2 since the first tick can happen
+	 * immediately after it starts waiting.
+	 */
+	.timeout	= 2,
 };
 
 /**************************************************************************
@@ -2405,12 +2427,6 @@ int falcon_probe_nic(struct efx_nic *efx)
 	struct falcon_nic_data *nic_data;
 	int rc;
 
-	/* Initialise I2C interface state */
-	efx->i2c.efx = efx;
-	efx->i2c.op = &falcon_i2c_bit_operations;
-	efx->i2c.sda = 1;
-	efx->i2c.scl = 1;
-
 	/* Allocate storage for hardware specific data */
 	nic_data = kzalloc(sizeof(*nic_data), GFP_KERNEL);
 	efx->nic_data = nic_data;
@@ -2461,6 +2477,18 @@ int falcon_probe_nic(struct efx_nic *efx)
 	if (rc)
 		goto fail5;
 
+	/* Initialise I2C adapter */
+ 	efx->i2c_adap.owner = THIS_MODULE;
+ 	efx->i2c_adap.class = I2C_CLASS_HWMON;
+	nic_data->i2c_data = falcon_i2c_bit_operations;
+	nic_data->i2c_data.data = efx;
+ 	efx->i2c_adap.algo_data = &nic_data->i2c_data;
+	efx->i2c_adap.dev.parent = &efx->pci_dev->dev;
+	strcpy(efx->i2c_adap.name, "SFC4000 GPIO");
+	rc = i2c_bit_add_bus(&efx->i2c_adap);
+	if (rc)
+		goto fail5;
+
 	return 0;
 
  fail5:
@@ -2635,6 +2663,10 @@ int falcon_init_nic(struct efx_nic *efx)
 void falcon_remove_nic(struct efx_nic *efx)
 {
 	struct falcon_nic_data *nic_data = efx->nic_data;
+	int rc;
+
+	rc = i2c_del_adapter(&efx->i2c_adap);
+	BUG_ON(rc);
 
 	falcon_free_buffer(efx, &efx->irq_status);