HID: roccat: add support for Roccat Savu

This patch adds rupport for Roccat Savu gaming mouse.

In comparison to the other Roccat modules I tried to move even more
functionality to userland.

Userland tools can soon be found at http://sourceforge.net/projects/roccat

Signed-off-by: Stefan Achatz <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

Documentation/ABI/testing/sysfs-driver-hid-roccat-savu

@@ -0,0 +1,68 @@
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/savu/roccatsavu<minor>/buttons
+Date: Mai 2012
+Contact: Stefan Achatz <[email protected]>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split into general settings and
+ button settings. buttons holds informations about button layout.
+ When written, this file lets one write the respective profile
+ buttons to the mouse. The data has to be 47 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ Before reading this file, control has to be written to select
+ which profile to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/savu/roccatsavu<minor>/control
+Date: Mai 2012
+Contact: Stefan Achatz <[email protected]>
+Description: When written, this file lets one select which data from which
+ profile will be read next. The data has to be 3 bytes long.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/savu/roccatsavu<minor>/general
+Date: Mai 2012
+Contact: Stefan Achatz <[email protected]>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. A profile is split into general settings and
+ button settings. profile holds informations like resolution, sensitivity
+ and light effects.
+ When written, this file lets one write the respective profile
+ settings back to the mouse. The data has to be 43 bytes long.
+ The mouse will reject invalid data.
+ Which profile to write is determined by the profile number
+ contained in the data.
+ This file is writeonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/savu/roccatsavu<minor>/info
+Date: Mai 2012
+Contact: Stefan Achatz <[email protected]>
+Description: When read, this file returns general data like firmware version.
+ The data is 8 bytes long.
+ This file is readonly.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/savu/roccatsavu<minor>/macro
+Date: Mai 2012
+Contact: Stefan Achatz <[email protected]>
+Description: When written, this file lets one store macros with max 500
+ keystrokes for a specific button for a specific profile.
+ Button and profile numbers are included in written data.
+ The data has to be 2083 bytes long.
+ Before reading this file, control has to be written to select
+ which profile and key to read.
+Users: http://roccat.sourceforge.net
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/savu/roccatsavu<minor>/profile
+Date: Mai 2012
+Contact: Stefan Achatz <[email protected]>
+Description: The mouse can store 5 profiles which can be switched by the
+ press of a button. profile holds number of actual profile.
+ This value is persistent, so its value determines the profile
+ that's active when the mouse is powered on next time.
+ When written, the mouse activates the set profile immediately.
+ The data has to be 3 bytes long.
+ The mouse will reject invalid data.
+Users: http://roccat.sourceforge.net

drivers/hid/Makefile

@@ -69,7 +69,8 @@ obj-$(CONFIG_HID_PICOLCD) += hid-picolcd.o
 obj-$(CONFIG_HID_PRIMAX) += hid-primax.o
 obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o hid-roccat-common.o \
  hid-roccat-arvo.o hid-roccat-isku.o hid-roccat-kone.o \
- hid-roccat-koneplus.o hid-roccat-kovaplus.o hid-roccat-pyra.o
+ hid-roccat-koneplus.o hid-roccat-kovaplus.o hid-roccat-pyra.o \
+ hid-roccat-savu.o
 obj-$(CONFIG_HID_SAITEK) += hid-saitek.o
 obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o
 obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o

drivers/hid/hid-core.c

@@ -1617,6 +1617,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
  { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
  { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
  { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
  { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
  { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
  { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },

drivers/hid/hid-ids.h

@@ -644,6 +644,7 @@
 #define USB_DEVICE_ID_ROCCAT_KOVAPLUS 0x2d50
 #define USB_DEVICE_ID_ROCCAT_PYRA_WIRED 0x2c24
 #define USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS 0x2cf6
+#define USB_DEVICE_ID_ROCCAT_SAVU 0x2d5a
 
 #define USB_VENDOR_ID_SAITEK 0x06a3
 #define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17