iwlwifi: split the drivers for agn and legacy devices 3945/4965

Intel WiFi devices 3945 and 4965 now have their own driver in the folder

	drivers/net/wireless/iwlegacy

Add support to build these drivers independently of the driver for
AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko,
and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko
contains code shared between both devices.

The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3
ABGN device.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlegacy/Kconfig b/drivers/net/wireless/iwlegacy/Kconfig
new file mode 100644
index 000000000000..2a45dd44cc12
--- /dev/null
+++ b/drivers/net/wireless/iwlegacy/Kconfig
@@ -0,0 +1,116 @@
+config IWLWIFI_LEGACY
+        tristate "Intel Wireless Wifi legacy devices"
+        depends on PCI && MAC80211
+        select FW_LOADER
+        select NEW_LEDS
+        select LEDS_CLASS
+        select LEDS_TRIGGERS
+        select MAC80211_LEDS
+
+menu "Debugging Options"
+        depends on IWLWIFI_LEGACY
+
+config IWLWIFI_LEGACY_DEBUG
+        bool "Enable full debugging output in 4965 and 3945 drivers"
+        depends on IWLWIFI_LEGACY
+        ---help---
+          This option will enable debug tracing output for the iwlwifilegacy
+          drivers.
+
+          This will result in the kernel module being ~100k larger.  You can
+          control which debug output is sent to the kernel log by setting the
+          value in
+
+                /sys/class/net/wlan0/device/debug_level
+
+          This entry will only exist if this option is enabled.
+
+          To set a value, simply echo an 8-byte hex value to the same file:
+
+                  % echo 0x43fff > /sys/class/net/wlan0/device/debug_level
+
+          You can find the list of debug mask values in:
+                  drivers/net/wireless/iwlwifilegacy/iwl-debug.h
+
+          If this is your first time using this driver, you should say Y here
+          as the debug information can assist others in helping you resolve
+          any problems you may encounter.
+
+config IWLWIFI_LEGACY_DEBUGFS
+        bool "4965 and 3945 debugfs support"
+        depends on IWLWIFI_LEGACY && MAC80211_DEBUGFS
+        ---help---
+          Enable creation of debugfs files for the iwlwifilegacy drivers. This
+          is a low-impact option that allows getting insight into the
+          driver's state at runtime.
+
+config IWLWIFI_LEGACY_DEVICE_TRACING
+        bool "iwlwifilegacy legacy device access tracing"
+        depends on IWLWIFI_LEGACY
+        depends on EVENT_TRACING
+        help
+          Say Y here to trace all commands, including TX frames and IO
+          accesses, sent to the device. If you say yes, iwlwifilegacy will
+          register with the ftrace framework for event tracing and dump
+          all this information to the ringbuffer, you may need to
+          increase the ringbuffer size. See the ftrace documentation
+          for more information.
+
+          When tracing is not enabled, this option still has some
+          (though rather small) overhead.
+
+          If unsure, say Y so we can help you better when problems
+          occur.
+endmenu
+
+config IWL4965
+        tristate "Intel Wireless WiFi 4965AGN (iwl4965)"
+        depends on IWLWIFI_LEGACY
+        ---help---
+          This option enables support for
+
+          Select to build the driver supporting the:
+
+          Intel Wireless WiFi Link 4965AGN
+
+          This driver uses the kernel's mac80211 subsystem.
+
+          In order to use this driver, you will need a microcode (uCode)
+          image for it. You can obtain the microcode from:
+
+                  <http://intellinuxwireless.org/>.
+
+          The microcode is typically installed in /lib/firmware. You can
+          look in the hotplug script /etc/hotplug/firmware.agent to
+          determine which directory FIRMWARE_DIR is set to when the script
+          runs.
+
+          If you want to compile the driver as a module ( = code which can be
+          inserted in and removed from the running kernel whenever you want),
+          say M here and read <file:Documentation/kbuild/modules.txt>.  The
+          module will be called iwl4965.
+
+config IWL3945
+        tristate "Intel PRO/Wireless 3945ABG/BG Network Connection (iwl3945)"
+        depends on IWLWIFI_LEGACY
+        ---help---
+          Select to build the driver supporting the:
+
+          Intel PRO/Wireless 3945ABG/BG Network Connection
+
+          This driver uses the kernel's mac80211 subsystem.
+
+          In order to use this driver, you will need a microcode (uCode)
+          image for it. You can obtain the microcode from:
+
+                  <http://intellinuxwireless.org/>.
+
+          The microcode is typically installed in /lib/firmware. You can
+          look in the hotplug script /etc/hotplug/firmware.agent to
+          determine which directory FIRMWARE_DIR is set to when the script
+          runs.
+
+          If you want to compile the driver as a module ( = code which can be
+          inserted in and removed from the running kernel whenever you want),
+          say M here and read <file:Documentation/kbuild/modules.txt>.  The
+          module will be called iwl3945.