HID: roccat: add support for IskuFX

Extending isku module with one additional and one changed sysfs attr. IskuFX has
larger light sysfs attr. Made the code size tolerant so both devices can be
handled.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

4 files changed, 25 insertions, 9 deletions

diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku b/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku
index 9eca5a182e64..c601d0f2ac46 100644
--- a/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-isku
@@ -101,7 +101,8 @@ Date:		June 2011
 Contact:        Stefan Achatz <erazor_de@users.sourceforge.net>
 Description:    When written, this file lets one set the backlight intensity for
                 a specific profile. Profile number is included in written data.
-                The data has to be 10 bytes long.
+                The data has to be 10 bytes long for Isku, IskuFX needs 16 bytes
+                of data.
                 Before reading this file, control has to be written to select
                 which profile to read.
 Users:          http://roccat.sourceforge.net
@@ -141,3 +142,12 @@ Description:	When written, this file lets one trigger easyshift functionality
                 The data has to be 16 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>/isku/roccatisku<minor>/talkfx
+Date:           February 2013
+Contact:        Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:    When written, this file lets one trigger temporary color schemes
+                from the host.
+                The data has to be 16 bytes long.
+                This file is writeonly.
+Users:          http://roccat.sourceforge.net
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 007ee7441e34..a2e767b3d5d2 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -687,6 +687,7 @@
 #define USB_VENDOR_ID_ROCCAT            0x1e7d
 #define USB_DEVICE_ID_ROCCAT_ARVO       0x30d4
 #define USB_DEVICE_ID_ROCCAT_ISKU       0x319c
+#define USB_DEVICE_ID_ROCCAT_ISKUFX     0x3264
 #define USB_DEVICE_ID_ROCCAT_KONE       0x2ced
 #define USB_DEVICE_ID_ROCCAT_KONEPLUS   0x2d51
 #define USB_DEVICE_ID_ROCCAT_KONEPURE   0x2dbe
diff --git a/drivers/hid/hid-roccat-isku.c b/drivers/hid/hid-roccat-isku.c
index 1219998a02d6..8023751d5257 100644
--- a/drivers/hid/hid-roccat-isku.c
+++ b/drivers/hid/hid-roccat-isku.c
@@ -130,14 +130,14 @@ static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj,
         if (off >= real_size)
                 return 0;
 
-        if (off != 0 || count != real_size)
+        if (off != 0 || count > real_size)
                 return -EINVAL;
 
         mutex_lock(&isku->isku_lock);
-        retval = isku_receive(usb_dev, command, buf, real_size);
+        retval = isku_receive(usb_dev, command, buf, count);
         mutex_unlock(&isku->isku_lock);
 
-        return retval ? retval : real_size;
+        return retval ? retval : count;
 }
 
 static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj,
@@ -150,15 +150,15 @@ static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj,
         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
         int retval;
 
-        if (off != 0 || count != real_size)
+        if (off != 0 || count > real_size)
                 return -EINVAL;
 
         mutex_lock(&isku->isku_lock);
         retval = roccat_common2_send_with_status(usb_dev, command,
-                        (void *)buf, real_size);
+                        (void *)buf, count);
         mutex_unlock(&isku->isku_lock);
 
-        return retval ? retval : real_size;
+        return retval ? retval : count;
 }
 
 #define ISKU_SYSFS_W(thingy, THINGY) \
@@ -216,6 +216,7 @@ ISKU_SYSFS_RW(light, LIGHT)
 ISKU_SYSFS_RW(key_mask, KEY_MASK)
 ISKU_SYSFS_RW(last_set, LAST_SET)
 ISKU_SYSFS_W(talk, TALK)
+ISKU_SYSFS_W(talkfx, TALKFX)
 ISKU_SYSFS_R(info, INFO)
 ISKU_SYSFS_W(control, CONTROL)
 ISKU_SYSFS_W(reset, RESET)
@@ -232,6 +233,7 @@ static struct bin_attribute isku_bin_attributes[] = {
         ISKU_BIN_ATTR_RW(key_mask, KEY_MASK),
         ISKU_BIN_ATTR_RW(last_set, LAST_SET),
         ISKU_BIN_ATTR_W(talk, TALK),
+        ISKU_BIN_ATTR_W(talkfx, TALKFX),
         ISKU_BIN_ATTR_R(info, INFO),
         ISKU_BIN_ATTR_W(control, CONTROL),
         ISKU_BIN_ATTR_W(reset, RESET),
@@ -405,6 +407,7 @@ static int isku_raw_event(struct hid_device *hdev,
 
 static const struct hid_device_id isku_devices[] = {
         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
         { }
 };
 
@@ -443,5 +446,5 @@ module_init(isku_init);
 module_exit(isku_exit);
 
 MODULE_AUTHOR("Stefan Achatz");
-MODULE_DESCRIPTION("USB Roccat Isku driver");
+MODULE_DESCRIPTION("USB Roccat Isku/FX driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/hid/hid-roccat-isku.h b/drivers/hid/hid-roccat-isku.h
index cf6896c83867..53056860d4d8 100644
--- a/drivers/hid/hid-roccat-isku.h
+++ b/drivers/hid/hid-roccat-isku.h
@@ -25,10 +25,11 @@ enum {
         ISKU_SIZE_KEYS_MACRO = 0x23,
         ISKU_SIZE_KEYS_CAPSLOCK = 0x06,
         ISKU_SIZE_LAST_SET = 0x14,
-        ISKU_SIZE_LIGHT = 0x0a,
+        ISKU_SIZE_LIGHT = 0x10,
         ISKU_SIZE_MACRO = 0x823,
         ISKU_SIZE_RESET = 0x03,
         ISKU_SIZE_TALK = 0x10,
+        ISKU_SIZE_TALKFX = 0x10,
 };
 
 enum {
@@ -59,6 +60,7 @@ enum isku_commands {
         ISKU_COMMAND_LAST_SET = 0x14,
         ISKU_COMMAND_15 = 0x15,
         ISKU_COMMAND_TALK = 0x16,
+        ISKU_COMMAND_TALKFX = 0x17,
         ISKU_COMMAND_FIRMWARE_WRITE = 0x1b,
         ISKU_COMMAND_FIRMWARE_WRITE_CONTROL = 0x1c,
 };