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-rw-r--r--MAINTAINERS7
-rw-r--r--drivers/i2c/Kconfig15
-rw-r--r--drivers/i2c/Makefile2
-rw-r--r--drivers/i2c/busses/i2c-i801.c2
-rw-r--r--drivers/i2c/i2c-acpi.c2
-rw-r--r--include/linux/i2c.h12
6 files changed, 26 insertions, 14 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 05dc39d66920..cb78ab59610d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4446,6 +4446,13 @@ F: include/linux/i2c-*.h
F: include/uapi/linux/i2c.h
F: include/uapi/linux/i2c-*.h
+I2C ACPI SUPPORT
+M: Mika Westerberg <mika.westerberg@linux.intel.com>
+L: linux-i2c@vger.kernel.org
+L: linux-acpi@vger.kernel.org
+S: Maintained
+F: drivers/i2c/i2c-acpi.c
+
I2C-TAOS-EVM DRIVER
M: Jean Delvare <jdelvare@suse.de>
L: linux-i2c@vger.kernel.org
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 3e3b680dc007..b51a402752c4 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -23,17 +23,14 @@ config I2C
This I2C support can also be built as a module. If so, the module
will be called i2c-core.
-config I2C_ACPI
- bool "I2C ACPI support"
- select I2C
- depends on ACPI
+config ACPI_I2C_OPREGION
+ bool "ACPI I2C Operation region support"
+ depends on I2C=y && ACPI
default y
help
- Say Y here if you want to enable ACPI I2C support. This includes support
- for automatic enumeration of I2C slave devices and support for ACPI I2C
- Operation Regions. Operation Regions allow firmware (BIOS) code to
- access I2C slave devices, such as smart batteries through an I2C host
- controller driver.
+ Say Y here if you want to enable ACPI I2C operation region support.
+ Operation Regions allow firmware (BIOS) code to access I2C slave devices,
+ such as smart batteries through an I2C host controller driver.
if I2C
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index a1f590cbb435..e0228b228256 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -3,7 +3,7 @@
#
i2ccore-y := i2c-core.o
-i2ccore-$(CONFIG_I2C_ACPI) += i2c-acpi.o
+i2ccore-$(CONFIG_ACPI) += i2c-acpi.o
obj-$(CONFIG_I2C_BOARDINFO) += i2c-boardinfo.o
obj-$(CONFIG_I2C) += i2ccore.o
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 2994690b26e9..10467a327749 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -164,6 +164,7 @@
/* Older devices have their ID defined in <linux/pci_ids.h> */
#define PCI_DEVICE_ID_INTEL_BAYTRAIL_SMBUS 0x0f12
+#define PCI_DEVICE_ID_INTEL_BRASWELL_SMBUS 0x2292
#define PCI_DEVICE_ID_INTEL_COUGARPOINT_SMBUS 0x1c22
#define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS 0x1d22
/* Patsburg also has three 'Integrated Device Function' SMBus controllers */
@@ -828,6 +829,7 @@ static const struct pci_device_id i801_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_WILDCATPOINT_SMBUS) },
{ 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) },
{ 0, }
};
diff --git a/drivers/i2c/i2c-acpi.c b/drivers/i2c/i2c-acpi.c
index e8b61967334b..0dbc18c15c43 100644
--- a/drivers/i2c/i2c-acpi.c
+++ b/drivers/i2c/i2c-acpi.c
@@ -126,6 +126,7 @@ void acpi_i2c_register_devices(struct i2c_adapter *adap)
dev_warn(&adap->dev, "failed to enumerate I2C slaves\n");
}
+#ifdef CONFIG_ACPI_I2C_OPREGION
static int acpi_gsb_i2c_read_bytes(struct i2c_client *client,
u8 cmd, u8 *data, u8 data_len)
{
@@ -360,3 +361,4 @@ void acpi_i2c_remove_space_handler(struct i2c_adapter *adapter)
acpi_bus_detach_private_data(handle);
}
+#endif
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index ea507665896c..a95efeb53a8b 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -577,16 +577,20 @@ static inline struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node
}
#endif /* CONFIG_OF */
-#ifdef CONFIG_I2C_ACPI
-int acpi_i2c_install_space_handler(struct i2c_adapter *adapter);
-void acpi_i2c_remove_space_handler(struct i2c_adapter *adapter);
+#ifdef CONFIG_ACPI
void acpi_i2c_register_devices(struct i2c_adapter *adap);
#else
static inline void acpi_i2c_register_devices(struct i2c_adapter *adap) { }
+#endif /* CONFIG_ACPI */
+
+#ifdef CONFIG_ACPI_I2C_OPREGION
+int acpi_i2c_install_space_handler(struct i2c_adapter *adapter);
+void acpi_i2c_remove_space_handler(struct i2c_adapter *adapter);
+#else
static inline void acpi_i2c_remove_space_handler(struct i2c_adapter *adapter)
{ }
static inline int acpi_i2c_install_space_handler(struct i2c_adapter *adapter)
{ return 0; }
-#endif
+#endif /* CONFIG_ACPI_I2C_OPREGION */
#endif /* _LINUX_I2C_H */