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Message-Id: <200912142118.nBELI9bU001205@mustang.cs.nmsu.edu>
Date: Mon, 14 Dec 2009 14:18:09 -0700
From: "Rick L. Vinyard Jr." <rvinyard@...nmsu.edu>
To: linux-kernel@...r.kernel.org
Cc: <krzysztof.h1@...pl>, Helt@...tang.cs.nmsu.edu,
Krzysztof@...tang.cs.nmsu.edu, <akpm@...ux-foundation.org>,
Morton@...tang.cs.nmsu.edu, Andrew@...tang.cs.nmsu.edu,
linux-usb@...r.kernel.org, <oliver@...kum.org>,
Neukum@...tang.cs.nmsu.edu, Oliver@...tang.cs.nmsu.edu,
linux-input@...r.kernel.org, <jkosina@...e.cz>,
Kosina@...tang.cs.nmsu.edu, Jiri@...tang.cs.nmsu.edu
Subject: [PATCH] Logitech G13 driver
Signed-off-by: Rick L. Vinyard, Jr <rvinyard@...nmsu.edu>
---
This is a driver for the Logitech G13 gamepad, and contains three
key parts. In the USB reports the device identifies itself as a
HID, and as a result this driver is under the HID framework.
There are two primary sub-components to this driver; an input
device and a framebuffer device.
Although identified as a HID, the device does not support standard
HID input messages. As a result, a sub-input device is allocated and
registered separately in g13_probe(). The raw events are monitored
and key presses/joystick activity is reported through the input device
after referencing an indexed keymap.
Additionally, this device contains a 160x43 monochrome LCD display.
A registered framebuffer device manages this display. The design
of this portion of the driver was based on the design of the
hecubafb driver with deferred framebuffer I/O since there is
no real memory to map.
This patch is against the torvalds/linux-2.6.git tree.
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 24d90ea..c7b86aa 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -183,6 +183,20 @@ config LOGIRUMBLEPAD2_FF
Say Y here if you want to enable force feedback support for Logitech
Rumblepad 2 devices.
+config LOGITECH_G13
+ tristate "Logitech G13 gameboard support"
+ depends on HID_LOGITECH
+ depends on FB
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ help
+ This provides support for Logitech G13 gameboard
+ devices. This includes support for the device
+ as a keypad input with mappable keys as well as
+ a framebuffer for the LCD display.
+
config HID_MICROSOFT
tristate "Microsoft" if EMBEDDED
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 0de2dff..6bdf6a5 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -18,6 +18,9 @@ endif
ifdef CONFIG_LOGIRUMBLEPAD2_FF
hid-logitech-objs += hid-lg2ff.o
endif
+ifdef CONFIG_LOGITECH_G13
+ hid-logitech-objs += hid-g13.o
+endif
obj-$(CONFIG_HID_A4TECH) += hid-a4tech.o
obj-$(CONFIG_HID_APPLE) += hid-apple.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 80792d3..eeae383 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1325,6 +1325,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G13) },
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
diff --git a/drivers/hid/hid-g13-logo.xbm b/drivers/hid/hid-g13-logo.xbm
new file mode 100644
index 0000000..a9b37e8
--- /dev/null
+++ b/drivers/hid/hid-g13-logo.xbm
@@ -0,0 +1,75 @@
+#define g13_lcd_width 160
+#define g13_lcd_height 43
+static unsigned char g13_lcd_bits[] = {
+ 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x28, 0x03, 0x00, 0x40, 0x01, 0x00, 0xc0, 0x3f, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa1,
+ 0x08, 0x00, 0x08, 0x00, 0x00, 0xe0, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x25, 0x00, 0xf3, 0x03,
+ 0x00, 0xe0, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x0e, 0x05, 0x00, 0x20, 0x16, 0x00, 0xf0, 0xff, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x09,
+ 0x00, 0x00, 0x00, 0x42, 0x00, 0xf0, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x05, 0x60, 0x80, 0x00, 0x14,
+ 0x00, 0x30, 0xe7, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x90, 0x00, 0x00, 0x20, 0x00, 0x10, 0x00, 0x10, 0xe3, 0x01,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, 0x02,
+ 0xe0, 0xdd, 0x03, 0x90, 0x00, 0x50, 0xcb, 0x01, 0x00, 0xfe, 0xff, 0x7f,
+ 0xf0, 0x3f, 0x00, 0xff, 0xff, 0x7f, 0x80, 0x00, 0xfa, 0xe3, 0x07, 0x38,
+ 0x00, 0x10, 0xc1, 0x01, 0x00, 0xff, 0xff, 0x7f, 0xf0, 0x3f, 0x00, 0xff,
+ 0xff, 0xff, 0xd0, 0x00, 0xfc, 0x87, 0x0f, 0x90, 0x00, 0x30, 0xe0, 0x01,
+ 0x80, 0xff, 0xff, 0x7f, 0xf0, 0x3f, 0x00, 0xff, 0xff, 0xff, 0x81, 0x80,
+ 0xfe, 0xa7, 0x3f, 0x30, 0x00, 0x30, 0xc0, 0x01, 0xc0, 0xff, 0xff, 0x7f,
+ 0xf0, 0x3f, 0x00, 0xff, 0xff, 0xff, 0x93, 0x42, 0x0f, 0x08, 0x3a, 0x30,
+ 0x00, 0x10, 0xe8, 0x01, 0xc0, 0xff, 0xff, 0x7f, 0xf0, 0x3f, 0x00, 0xff,
+ 0xff, 0xff, 0x93, 0xa4, 0x41, 0x20, 0x20, 0x94, 0x00, 0x30, 0xf4, 0x03,
+ 0xc0, 0x07, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x93, 0x41,
+ 0x60, 0x48, 0xe1, 0x98, 0x00, 0x70, 0xda, 0x07, 0xc0, 0x07, 0x00, 0x00,
+ 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x83, 0x77, 0x10, 0x82, 0xc5, 0x1f,
+ 0x00, 0xd0, 0xcc, 0x07, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00,
+ 0x00, 0xe0, 0x23, 0x3f, 0x00, 0x90, 0xc0, 0x4f, 0x00, 0x98, 0x83, 0x0f,
+ 0xc0, 0x07, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x3f,
+ 0x00, 0x85, 0x86, 0x27, 0x00, 0x0c, 0x80, 0x0f, 0xc0, 0x07, 0x00, 0x00,
+ 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x3e, 0xc0, 0x83, 0x86, 0x0b,
+ 0x00, 0x0c, 0x80, 0x1f, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00,
+ 0x00, 0xe0, 0x03, 0x11, 0x00, 0x00, 0x04, 0x0d, 0x00, 0x0e, 0x00, 0x3f,
+ 0xc0, 0x07, 0xff, 0xff, 0x00, 0x3e, 0x00, 0xff, 0xff, 0xff, 0x03, 0x0c,
+ 0x10, 0x00, 0x02, 0x02, 0x00, 0x0f, 0x00, 0x3f, 0xc0, 0x07, 0xff, 0xff,
+ 0x00, 0x3e, 0x00, 0xff, 0xff, 0xff, 0x01, 0x00, 0x08, 0x00, 0x1c, 0x02,
+ 0x00, 0x07, 0x00, 0x7e, 0xc0, 0x07, 0xff, 0xff, 0x00, 0x3e, 0x00, 0xff,
+ 0xff, 0xff, 0x00, 0x00, 0x04, 0x00, 0x28, 0x04, 0x80, 0x03, 0x00, 0x7e,
+ 0xc0, 0x07, 0xff, 0xff, 0x00, 0x3e, 0x00, 0xff, 0xff, 0xff, 0x01, 0x08,
+ 0x02, 0x58, 0x08, 0x00, 0x80, 0x03, 0x00, 0xfc, 0xc0, 0x07, 0xff, 0xff,
+ 0x00, 0x3e, 0x00, 0xff, 0xff, 0xff, 0x01, 0x00, 0x01, 0x08, 0x21, 0x00,
+ 0x80, 0x03, 0x00, 0xfc, 0xc0, 0x07, 0x00, 0xf8, 0x00, 0x3e, 0x00, 0x00,
+ 0x00, 0xe0, 0x03, 0xa4, 0x01, 0x28, 0x00, 0x00, 0xc0, 0x01, 0x00, 0xfc,
+ 0xc0, 0x07, 0x00, 0xf8, 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x2e,
+ 0x02, 0x00, 0x00, 0x00, 0xc0, 0x01, 0x00, 0xfc, 0xc1, 0x07, 0x00, 0xf8,
+ 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x20, 0x00, 0x02, 0x00, 0x00,
+ 0xe0, 0x01, 0x00, 0xfc, 0xc1, 0x07, 0x00, 0xf8, 0x00, 0x3e, 0x00, 0x00,
+ 0x00, 0xe0, 0x03, 0x20, 0x02, 0x00, 0x10, 0x00, 0xe0, 0x01, 0x00, 0xe8,
+ 0xc1, 0x07, 0x00, 0xf8, 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x20,
+ 0x02, 0x04, 0x00, 0x00, 0xe0, 0x00, 0x00, 0xfc, 0xc1, 0x07, 0x00, 0xf8,
+ 0x00, 0x3e, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x00, 0x0c, 0x00, 0x00, 0x00,
+ 0xf0, 0x01, 0x00, 0xfe, 0xc0, 0xff, 0xff, 0xff, 0xf0, 0xff, 0x0f, 0xff,
+ 0xff, 0xff, 0x03, 0x40, 0x08, 0x08, 0x0d, 0x00, 0x58, 0x03, 0x00, 0x7c,
+ 0xc0, 0xff, 0xff, 0xff, 0xf0, 0xff, 0x0f, 0xff, 0xff, 0xff, 0x03, 0x40,
+ 0x10, 0xa0, 0x18, 0x00, 0xa8, 0x06, 0x00, 0xb8, 0x81, 0xff, 0xff, 0xff,
+ 0xf0, 0xff, 0x0f, 0xff, 0xff, 0xff, 0x01, 0x00, 0x10, 0x00, 0x00, 0x00,
+ 0x5e, 0x1d, 0x00, 0xe8, 0x82, 0xff, 0xff, 0xff, 0xf0, 0xff, 0x0f, 0xff,
+ 0xff, 0xff, 0x01, 0x00, 0x20, 0xc0, 0x07, 0x00, 0xab, 0x3a, 0x00, 0x54,
+ 0x03, 0xfe, 0xff, 0xff, 0xf0, 0xff, 0x0f, 0xff, 0xff, 0x7f, 0x00, 0x80,
+ 0x40, 0x01, 0x01, 0x00, 0x55, 0x3d, 0x00, 0xaa, 0x06, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x81, 0x01, 0x01, 0x00,
+ 0xab, 0x1a, 0xc0, 0x55, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, 0x00, 0x55, 0x35, 0xe0, 0xab,
+ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xc0, 0x43, 0x01, 0x00, 0xab, 0xaa, 0xff, 0x55, 0x03, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc7, 0x00, 0x00,
+ 0x57, 0xf5, 0xff, 0xaa, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0xaa, 0xea, 0xff, 0xd5,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0xfe, 0x03, 0x00, 0x7c, 0x75, 0x80, 0x2b, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x03, 0x00,
+ 0x80, 0x1f, 0x00, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x01, 0x00 };
diff --git a/drivers/hid/hid-g13.c b/drivers/hid/hid-g13.c
new file mode 100644
index 0000000..c699138
--- /dev/null
+++ b/drivers/hid/hid-g13.c
@@ -0,0 +1,1497 @@
+/***************************************************************************
+ * Copyright (C) 2009 by Rick L. Vinyard, Jr. *
+ * rvinyard@...nmsu.edu *
+ * *
+ * This program is free software: you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation, either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This driver is distributed in the hope that it will be useful, but *
+ * WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
+ * General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this software. If not see <http://www.gnu.org/licenses/>. *
+ ***************************************************************************/
+#include <linux/fb.h>
+#include <linux/hid.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/mm.h>
+#include <linux/sysfs.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/vmalloc.h>
+
+#include "hid-ids.h"
+#include "usbhid/usbhid.h"
+#include "hid-g13-logo.xbm"
+
+#define G13_NAME "Logitech G13"
+
+/* Key defines */
+#define G13_KEYS 35
+#define G13_KEYMAP_SIZE (G13_KEYS*3)
+
+/* G1-G22 indices */
+#define G13_G1 0
+#define G13_G2 1
+#define G13_G3 2
+#define G13_G4 3
+#define G13_G5 4
+#define G13_G6 5
+#define G13_G7 6
+#define G13_G8 7
+#define G13_G9 8
+#define G13_G10 9
+#define G13_G11 10
+#define G13_G12 11
+#define G13_G13 12
+#define G13_G14 13
+#define G13_G15 14
+#define G13_G16 15
+#define G13_G17 16
+#define G13_G18 17
+#define G13_G19 18
+#define G13_G20 19
+#define G13_G21 20
+#define G13_G22 21
+#define G13_FUNC 22
+#define G13_LCD1 23
+#define G13_LCD2 24
+#define G13_LCD3 25
+#define G13_LCD4 26
+#define G13_M1 27
+#define G13_M2 28
+#define G13_M3 29
+#define G13_MR 30
+#define G13_BTN_LEFT 31
+#define G13_BTN_DOWN 32
+#define G13_BTN_STICK 33
+#define G13_LIGHT 34
+
+/* Framebuffer defines */
+#define G13FB_NAME "g13fb"
+#define G13FB_WIDTH (160)
+#define G13FB_LINE_LENGTH (160/8)
+#define G13FB_HEIGHT (43)
+
+/* 160*43 rounded to nearest whole byte which is 160*48 since bytes are
+ vertical the y component must be a multiple of 8 */
+#define G13FB_SIZE (160*48/8)
+
+#define G13FB_UPDATE_RATE_LIMIT 20
+#define G13FB_UPDATE_RATE_DEFAULT 10
+#define G13_VBITMAP_SIZE (G13FB_SIZE + 32)
+
+/* Backlight defaults */
+#define G13_DEFAULT_RED 0
+#define G13_DEFAULT_GREEN 255
+#define G13_DEFAULT_BLUE 0
+
+/* Per device data structure */
+struct g13_data {
+ /* HID reports */
+ struct hid_device *hdev;
+ struct hid_report *backlight_report;
+ struct hid_report *start_input_report;
+ struct hid_report *report_4;
+ struct hid_report *mled_report;
+ struct input_dev *input_dev;
+
+ char *name;
+ int ready;
+ int ready2;
+ u32 keycode[G13_KEYMAP_SIZE];
+ u8 rgb[3];
+ u8 mled;
+ u8 curkeymap;
+ u8 emit_msc_raw;
+ u8 keymap_switching;
+
+ /* Framebuffer stuff */
+ u8 fb_update_rate;
+ u8 *fb_vbitmap;
+ u8 *fb_bitmap;
+ struct fb_info *fb_info;
+ struct fb_deferred_io fb_defio;
+
+ /* Housekeeping stuff */
+ rwlock_t lock;
+};
+
+/* Convenience macros */
+#define hid_get_g13data(hdev) \
+ ((hdev == NULL) ? NULL : (struct g13_data *)(hid_get_drvdata(hdev)))
+
+#define input_get_hdev(idev) \
+ ((idev == NULL) ? NULL : (struct hid_device *)(input_get_drvdata(idev)))
+
+#define input_get_g13data(idev) (hid_get_g13data(input_get_hdev(idev)))
+
+static ssize_t g13_set_mled(struct hid_device *hdev, unsigned mled);
+
+static unsigned int g13_default_key_map[G13_KEYS] = {
+ /* first row g1 - g7 */
+ KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7,
+ /* second row g8 - g11 */
+ KEY_UNKNOWN, KEY_UNKNOWN, KEY_BACK, KEY_UP,
+ /* second row g12 - g13 */
+ KEY_FORWARD, KEY_UNKNOWN, KEY_UNKNOWN,
+ /* third row g15 - g19 */
+ KEY_UNKNOWN, KEY_LEFT, KEY_DOWN, KEY_RIGHT, KEY_UNKNOWN,
+ /* fourth row g20 - g22 */
+ KEY_BACKSPACE, KEY_ENTER, KEY_SPACE,
+ /* next, light left, light center left, light center right, light right */
+ BTN_0, BTN_1, BTN_2, BTN_3, BTN_4,
+ /* M1, M2, M3, MR */
+ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
+ /* button left, button down, button stick, light */
+ BTN_LEFT, BTN_RIGHT, BTN_MIDDLE, KEY_RESERVED,
+};
+
+/* Frambuffer visual structures */
+static struct fb_fix_screeninfo g13fb_fix = {
+ .id = G13FB_NAME,
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_MONO01,
+ .xpanstep = 0,
+ .ypanstep = 0,
+ .ywrapstep = 0,
+ .line_length = G13FB_LINE_LENGTH,
+ .accel = FB_ACCEL_NONE,
+};
+
+static struct fb_var_screeninfo g13fb_var = {
+ .xres = G13FB_WIDTH,
+ .yres = G13FB_HEIGHT,
+ .xres_virtual = G13FB_WIDTH,
+ .yres_virtual = G13FB_HEIGHT,
+ .bits_per_pixel = 1,
+ .nonstd = 1,
+};
+
+/* Send the current framebuffer vbitmap as an interrupt message */
+static int g13_fb_vbitmap_send(struct hid_device *hdev)
+{
+ struct usb_interface *intf;
+ struct usb_device *usbdev;
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ /* Get the usb device to send the image on */
+ intf = to_usb_interface(hdev->dev.parent);
+ usbdev = interface_to_usbdev(intf);
+
+ return usb_interrupt_msg(usbdev, usb_sndintpipe(usbdev, 0x02),
+ data->fb_vbitmap, G13_VBITMAP_SIZE,
+ NULL, USB_CTRL_SET_TIMEOUT*2);
+}
+
+/* Update fb_vbitmap from the screen_base and send to the device */
+static void g13_fb_update(struct g13_data *data)
+{
+ int row, col, bit;
+ u8 *u;
+ size_t offset;
+ u8 temp;
+
+ /* Clear the vbitmap and set the necessary magic number */
+ memset(data->fb_vbitmap, 0x00, G13_VBITMAP_SIZE);
+ data->fb_vbitmap[0] = 0x03;
+
+ /* Translate the XBM format screen_base into the format needed by the
+ G13. This format places the pixels in a vertical rather than
+ horizontal format. Assuming a grid with 0,0 in the upper left corner
+ and 159,42 in the lower right corner, the first byte contains the
+ pixels 0,0 through 0,7 and the second byte contains the pixels 1,0
+ through 1,7. Within the byte, bit 0 represents 0,0; bit 1 0,1; etc.
+
+ This loop operates in reverse to shift the lower bits into their
+ respective positions, shifting the lower rows into the higher bits.
+
+ The offset is calculated for every 8 rows and is adjusted by 32 since
+ that is what the G13 image message expects.
+ */
+ for (row = G13FB_HEIGHT-1; row >= 0; row--) {
+ offset = 32 + row/8 * G13FB_WIDTH;
+ u = data->fb_vbitmap + offset;
+ /* Iterate across the screen_base columns to get the
+ individual bits */
+ for (col = 0; col < G13FB_LINE_LENGTH; col++) {
+ /* We will work with a temporary value since we don't
+ want to modify screen_base as we shift each bit
+ downward. */
+ temp = data->fb_bitmap[row * G13FB_LINE_LENGTH + col];
+ /* For each bit in the pixel row we will shift it onto
+ the appropriate by by shift the g13 byte up by 1 and
+ simply doing a bitwise or of the low byte */
+ for (bit = 0; bit < 8; bit++) {
+ /*Shift the g13 byte up by 1 for this new row*/
+ u[bit] <<= 1;
+ /* Bring in the new pixel of temp */
+ u[bit] |= (temp & 0x01);
+ /* Shift temp down so the low pixel is ready
+ for the next byte */
+ temp >>= 1;
+ }
+ /* The last byte represented 8 vertical pixels so we'll
+ jump ahead 8 */
+ u += 8;
+ }
+ }
+
+ /* Now that we have translated screen_base into a format expected by
+ the g13 let's send out the vbitmap */
+ g13_fb_vbitmap_send(data->hdev);
+
+}
+
+/* Callback from deferred IO workqueue */
+static void g13_fb_deferred_io(struct fb_info *info, struct list_head *pagelist)
+{
+ g13_fb_update(info->par);
+}
+
+/* Stub to call the system default and update the image on the g13 */
+static void g13_fb_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ struct g13_data *par = info->par;
+
+ sys_fillrect(info, rect);
+
+ g13_fb_update(par);
+}
+
+/* Stub to call the system default and update the image on the g13 */
+static void g13_fb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *area)
+{
+ struct g13_data *par = info->par;
+
+ sys_copyarea(info, area);
+
+ g13_fb_update(par);
+}
+
+/* Stub to call the system default and update the image on the g13 */
+static void g13_fb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ struct g13_data *par = info->par;
+
+ sys_imageblit(info, image);
+
+ g13_fb_update(par);
+}
+
+/*
+ * this is the slow path from userspace. they can seek and write to
+ * the fb. it's inefficient to do anything less than a full screen draw
+ */
+static ssize_t g13_fb_write(struct fb_info *info, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct g13_data *par = info->par;
+ unsigned long p = *ppos;
+ void *dst;
+ int err = 0;
+ unsigned long total_size;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return -EPERM;
+
+ total_size = info->fix.smem_len;
+
+ if (p > total_size)
+ return -EFBIG;
+
+ if (count > total_size) {
+ err = -EFBIG;
+ count = total_size;
+ }
+
+ if (count + p > total_size) {
+ if (!err)
+ err = -ENOSPC;
+
+ count = total_size - p;
+ }
+
+ dst = (void __force *)(info->screen_base + p);
+
+ if (copy_from_user(dst, buf, count))
+ err = -EFAULT;
+
+ if (!err)
+ *ppos += count;
+
+ g13_fb_update(par);
+
+ return (err) ? err : count;
+}
+
+static struct fb_ops g13fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_read = fb_sys_read,
+ .fb_write = g13_fb_write,
+ .fb_fillrect = g13_fb_fillrect,
+ .fb_copyarea = g13_fb_copyarea,
+ .fb_imageblit = g13_fb_imageblit,
+};
+
+/*
+ * The "fb_node" attribute
+ */
+static ssize_t g13_fb_node_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned fb_node;
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ fb_node = data->fb_info->node;
+
+ return sprintf(buf, "%u\n", fb_node);
+}
+
+static DEVICE_ATTR(fb_node, 0444, g13_fb_node_show, NULL);
+
+
+/*
+ * The "fb_update_rate" attribute
+ */
+static ssize_t g13_fb_update_rate_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned fb_update_rate;
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ fb_update_rate = data->fb_update_rate;
+
+ return sprintf(buf, "%u\n", fb_update_rate);
+}
+
+static ssize_t g13_set_fb_update_rate(struct hid_device *hdev,
+ unsigned fb_update_rate)
+{
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ if (fb_update_rate > G13FB_UPDATE_RATE_LIMIT)
+ data->fb_update_rate = G13FB_UPDATE_RATE_LIMIT;
+ else if (fb_update_rate == 0)
+ data->fb_update_rate = 1;
+ else
+ data->fb_update_rate = fb_update_rate;
+
+ data->fb_defio.delay = HZ / data->fb_update_rate;
+
+ return 0;
+}
+
+static ssize_t g13_fb_update_rate_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int i;
+ unsigned u;
+ ssize_t set_result;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ i = sscanf(buf, "%u", &u);
+ if (i != 1) {
+ printk(KERN_ERR "unrecognized input: %s", buf);
+ return -1;
+ }
+
+ set_result = g13_set_fb_update_rate(hdev, u);
+
+ if (set_result < 0)
+ return set_result;
+
+ return count;
+}
+
+static DEVICE_ATTR(fb_update_rate, 0666,
+ g13_fb_update_rate_show,
+ g13_fb_update_rate_store);
+
+static int g13_raw_event(struct hid_device *hdev,
+ struct hid_report *report,
+ u8 *raw_data, int size)
+{
+ /* On initialization receive a 258 byte message with
+ data = 6 0 255 255 255 255 255 255 255 255 ...
+ */
+ int i, mask, offset;
+ u8 val;
+ struct g13_data *g13data;
+ g13data = dev_get_drvdata(&hdev->dev);
+
+ if (g13data == NULL)
+ return 1;
+
+ switch (report->id) {
+ case 6:
+ g13data->ready = 1;
+ break;
+ case 1:
+ g13data->ready2 = 1;
+
+ if (g13data->input_dev == NULL)
+ break;
+
+ if (g13data->curkeymap < 3)
+ offset = G13_KEYS * g13data->curkeymap;
+ else
+ offset = 0;
+
+ for (i = 0, mask = 0x01; i < 8; i++, mask <<= 1) {
+ /* Keys G1 through G8 */
+ if (g13data->keycode[i] != KEY_RESERVED)
+ input_report_key(g13data->input_dev,
+ g13data->keycode[i+offset],
+ raw_data[3] & mask);
+ input_event(g13data->input_dev, EV_MSC, MSC_SCAN, i);
+
+ /* Keys G9 through G16 */
+ if (g13data->keycode[i+8] != KEY_RESERVED)
+ input_report_key(g13data->input_dev,
+ g13data->keycode[i+8+offset],
+ raw_data[4] & mask);
+ input_event(g13data->input_dev, EV_MSC, MSC_SCAN, i+8);
+
+ /* Keys G17 through G22 */
+ if (i <= 5 && g13data->keycode[i+16] != KEY_RESERVED)
+ input_report_key(g13data->input_dev,
+ g13data->keycode[i+16+offset],
+ raw_data[5] & mask);
+ input_event(g13data->input_dev, EV_MSC, MSC_SCAN, i+16);
+
+ /* Keys FUNC through M3 */
+ if (g13data->keycode[i+22] != KEY_RESERVED)
+ input_report_key(g13data->input_dev,
+ g13data->keycode[i+22+offset],
+ raw_data[6] & mask);
+ input_event(g13data->input_dev, EV_MSC, MSC_SCAN, i+22);
+
+ /* Keys MR through LIGHT */
+ if (i <= 4 && g13data->keycode[i+30] != KEY_RESERVED)
+ input_report_key(g13data->input_dev,
+ g13data->keycode[i+30+offset],
+ raw_data[7] & mask);
+ input_event(g13data->input_dev, EV_MSC, MSC_SCAN, i+30);
+ }
+
+ if (g13data->emit_msc_raw) {
+ /* Outputs an MSC_RAW value with the low four
+ bits = M1-MR, Low bit = M1 */
+ val = raw_data[6] >> 5;
+ val |= (raw_data[7] & 0x01 << 3);
+ input_event(g13data->input_dev, EV_MSC, MSC_RAW, val);
+ }
+
+ if (g13data->keymap_switching) {
+ if (raw_data[6] & 0x20) {
+ g13data->curkeymap = 0;
+ g13_set_mled(hdev, 0x01);
+ } else if (raw_data[6] & 0x40) {
+ g13data->curkeymap = 1;
+ g13_set_mled(hdev, 0x02);
+ } else if (raw_data[6] & 0x80) {
+ g13data->curkeymap = 2;
+ g13_set_mled(hdev, 0x04);
+ }
+ }
+
+ input_report_abs(g13data->input_dev, ABS_X, raw_data[1]);
+ input_report_abs(g13data->input_dev, ABS_Y, raw_data[2]);
+ input_sync(g13data->input_dev);
+
+ break;
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+static void g13_initialize_keymap(struct g13_data *data)
+{
+ int i;
+
+ write_lock(&data->lock);
+
+ for (i = 0; i < G13_KEYS; i++) {
+ data->keycode[i] = g13_default_key_map[i];
+ set_bit(data->keycode[i], data->input_dev->keybit);
+ }
+
+ clear_bit(0, data->input_dev->keybit);
+
+ write_unlock(&data->lock);
+
+}
+
+static int g13_input_setkeycode(struct input_dev *dev,
+ int scancode,
+ int keycode)
+{
+ int old_keycode;
+ int i;
+ struct g13_data *data = input_get_g13data(dev);
+
+ if (data == NULL)
+ return -EINVAL;
+
+ if (scancode >= dev->keycodemax)
+ return -EINVAL;
+
+ if (!dev->keycodesize)
+ return -EINVAL;
+
+ if (dev->keycodesize < sizeof(keycode) &&
+ (keycode >> (dev->keycodesize * 8)))
+ return -EINVAL;
+
+ write_lock(&data->lock);
+
+ old_keycode = data->keycode[scancode];
+ data->keycode[scancode] = keycode;
+
+ clear_bit(old_keycode, dev->keybit);
+ set_bit(keycode, dev->keybit);
+
+ for (i = 0; i < dev->keycodemax; i++) {
+ if (data->keycode[i] == old_keycode) {
+ set_bit(old_keycode, dev->keybit);
+ break; /* Setting the bit twice is useless, so break */
+ }
+ }
+
+ write_unlock(&data->lock);
+
+ return 0;
+}
+
+static int g13_input_getkeycode(struct input_dev *dev,
+ int scancode,
+ int *keycode)
+{
+ struct g13_data *data = input_get_g13data(dev);
+
+ if (!dev->keycodesize)
+ return -EINVAL;
+
+ if (scancode >= dev->keycodemax)
+ return -EINVAL;
+
+ read_lock(&data->lock);
+
+ *keycode = data->keycode[scancode];
+
+ read_unlock(&data->lock);
+
+ return 0;
+}
+
+
+/*
+ * The "keymap" attribute
+ */
+static ssize_t g13_keymap_index_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ return sprintf(buf, "%u\n", data->curkeymap);
+}
+
+static ssize_t g13_set_keymap_index(struct hid_device *hdev, unsigned k)
+{
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ if (k > 2)
+ return -EINVAL;
+
+ data->curkeymap = k;
+
+ if (data->keymap_switching)
+ g13_set_mled(hdev, 1<<k);
+
+ return 0;
+}
+
+static ssize_t g13_keymap_index_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int i;
+ unsigned k;
+ ssize_t set_result;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ i = sscanf(buf, "%u", &k);
+ if (i != 1) {
+ printk(KERN_ERR "unrecognized input: %s", buf);
+ return -1;
+ }
+
+ set_result = g13_set_keymap_index(hdev, k);
+
+ if (set_result < 0)
+ return set_result;
+
+ return count;
+}
+
+static DEVICE_ATTR(keymap_index, 0666,
+ g13_keymap_index_show,
+ g13_keymap_index_store);
+
+/*
+ * The "keycode" attribute
+ */
+static ssize_t g13_keymap_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int i;
+ int offset = 0;
+ int result;
+
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ for (i = 0; i < G13_KEYMAP_SIZE; i++) {
+ result = sprintf(buf+offset,
+ "0x%03x 0x%04x\n",
+ i, data->keycode[i]);
+ if (result < 0)
+ return -EINVAL;
+ offset += result;
+ }
+
+ return offset+1;
+}
+
+static ssize_t g13_keymap_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int scanned, consumed;
+ int scancd, keycd;
+ int set_result;
+ int set = 0;
+ int gkey;
+ int index;
+ int good;
+ struct g13_data *data;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ /* Now, let's get the data structure */
+ data = hid_get_g13data(hdev);
+ if (data == NULL)
+ return -ENODATA;
+
+ do {
+ good = 0;
+
+ /* Look for scancode keycode pair in hex */
+ scanned = sscanf(buf,
+ "%x %x%n",
+ &scancd, &keycd, &consumed);
+ if (scanned == 2) {
+ buf += consumed;
+ set_result = g13_input_setkeycode(data->input_dev,
+ scancd,
+ keycd);
+ if (set_result < 0)
+ return set_result;
+ set++;
+ good = 1;
+ } else {
+ /* Look for Gkey keycode pair and assign to current
+ keymap */
+ scanned = sscanf(buf,
+ "G%d %x%n",
+ &gkey, &keycd, &consumed);
+ if (scanned == 2 && gkey > 0 && gkey <= G13_KEYS) {
+ buf += consumed;
+ scancd = data->curkeymap * G13_KEYS + gkey - 1;
+ set_result =
+ g13_input_setkeycode(data->input_dev,
+ scancd, keycd);
+ if (set_result < 0)
+ return set_result;
+ set++;
+ good = 1;
+ } else {
+ /* Look for Gkey-index keycode pair and assign
+ to indexed keymap */
+ scanned = sscanf(buf,
+ "G%d-%d %x%n",
+ &gkey,
+ &index,
+ &keycd,
+ &consumed);
+ if (scanned == 3 &&
+ gkey > 0 && gkey <= G13_KEYS &&
+ index >= 0 && index <= 2) {
+ buf += consumed;
+ scancd = index * G13_KEYS + gkey - 1;
+ set_result =
+ g13_input_setkeycode(data->input_dev,
+ scancd, keycd);
+ if (set_result < 0)
+ return set_result;
+ set++;
+ good = 1;
+ }
+ }
+ }
+
+ } while (good);
+
+ if (set == 0) {
+ printk(KERN_ERR "unrecognized keycode input: %s", buf);
+ return -1;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR(keymap, 0666, g13_keymap_show, g13_keymap_store);
+
+/*
+ * The "emit_msc_raw" attribute
+ */
+static ssize_t g13_emit_msc_raw_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ return sprintf(buf, "%u\n", data->emit_msc_raw);
+}
+
+static ssize_t g13_set_emit_msc_raw(struct hid_device *hdev, unsigned k)
+{
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ data->emit_msc_raw = k;
+
+ return 0;
+}
+
+static ssize_t g13_emit_msc_raw_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int i;
+ unsigned k;
+ ssize_t set_result;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ i = sscanf(buf, "%u", &k);
+ if (i != 1) {
+ printk(KERN_ERR "unrecognized input: %s", buf);
+ return -1;
+ }
+
+ set_result = g13_set_emit_msc_raw(hdev, k);
+
+ if (set_result < 0)
+ return set_result;
+
+ return count;
+}
+
+static DEVICE_ATTR(emit_msc_raw, 0666,
+ g13_emit_msc_raw_show,
+ g13_emit_msc_raw_store);
+
+
+/*
+ * The "keymap_switching" attribute
+ */
+static ssize_t g13_keymap_switching_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ return sprintf(buf, "%u\n", data->keymap_switching);
+}
+
+static ssize_t g13_set_keymap_switching(struct hid_device *hdev, unsigned k)
+{
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ data->keymap_switching = k;
+
+ if (data->keymap_switching)
+ g13_set_mled(hdev, 1<<(data->curkeymap));
+
+ return 0;
+}
+
+static ssize_t g13_keymap_switching_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int i;
+ unsigned k;
+ ssize_t set_result;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ i = sscanf(buf, "%u", &k);
+ if (i != 1) {
+ printk(KERN_ERR "unrecognized input: %s", buf);
+ return -1;
+ }
+
+ set_result = g13_set_keymap_switching(hdev, k);
+
+ if (set_result < 0)
+ return set_result;
+
+ return count;
+}
+
+static DEVICE_ATTR(keymap_switching, 0666,
+ g13_keymap_switching_show,
+ g13_keymap_switching_store);
+
+
+static ssize_t g13_name_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct g13_data *data = dev_get_drvdata(dev);
+ int result;
+
+ if (data == NULL)
+ return -ENODATA;
+
+ if (data->name == NULL) {
+ buf[0] = 0x00;
+ return 1;
+ }
+
+ read_lock(&data->lock);
+ result = sprintf(buf, "%s", data->name);
+ read_unlock(&data->lock);
+
+ return result;
+}
+
+static ssize_t g13_name_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct g13_data *data = dev_get_drvdata(dev);
+ size_t limit = count;
+ char *end;
+
+ if (data == NULL)
+ return -ENODATA;
+
+ write_lock(&data->lock);
+
+ if (data->name != NULL) {
+ kfree(data->name);
+ data->name = NULL;
+ }
+
+ end = strpbrk(buf, "\n\r");
+ if (end != NULL)
+ limit = end - buf;
+
+ if (end != buf) {
+
+ if (limit > 100)
+ limit = 100;
+
+ data->name = kzalloc(limit+1, GFP_KERNEL);
+
+ strncpy(data->name, buf, limit);
+ }
+
+ write_unlock(&data->lock);
+
+ return count;
+}
+
+static DEVICE_ATTR(name, 0666, g13_name_show, g13_name_store);
+
+/*
+ * The "rgb" attribute
+ * red green blue
+ * each with values 0 - 255 (black - full intensity)
+ */
+static ssize_t g13_rgb_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned r, g, b;
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ r = data->rgb[0];
+ g = data->rgb[1];
+ b = data->rgb[2];
+
+ return sprintf(buf, "%u %u %u\n", r, g, b);
+}
+
+static ssize_t g13_set_rgb(struct hid_device *hdev,
+ unsigned r, unsigned g, unsigned b)
+{
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ if (data == NULL || data->backlight_report == NULL)
+ return -ENODATA;
+
+ data->backlight_report->field[0]->value[0] = r;
+ data->backlight_report->field[0]->value[1] = g;
+ data->backlight_report->field[0]->value[2] = b;
+ data->backlight_report->field[0]->value[3] = 0x00;
+
+ usbhid_submit_report(hdev, data->backlight_report, USB_DIR_OUT);
+
+ data->rgb[0] = r;
+ data->rgb[1] = g;
+ data->rgb[2] = b;
+
+ return 0;
+}
+
+static ssize_t g13_rgb_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int i;
+ unsigned r, g, b;
+ ssize_t set_result;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ i = sscanf(buf, "%u %u %u", &r, &g, &b);
+ if (i != 3) {
+ printk(KERN_ERR "unrecognized input: %s", buf);
+ return -1;
+ }
+
+ set_result = g13_set_rgb(hdev, r, g, b);
+
+ if (set_result < 0)
+ return set_result;
+
+ return count;
+}
+
+static DEVICE_ATTR(rgb, 0666, g13_rgb_show, g13_rgb_store);
+
+/*
+ * The "mled" attribute
+ * on or off for each of the four M led's (M1 M2 M3 MR)
+ */
+static ssize_t g13_mled_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ unsigned mled;
+ struct g13_data *data = dev_get_drvdata(dev);
+
+ if (data == NULL)
+ return -ENODATA;
+
+ mled = data->mled;
+
+ return sprintf(buf, "%u\n", mled);
+}
+
+static ssize_t g13_set_mled(struct hid_device *hdev, unsigned mled)
+{
+ struct g13_data *data = hid_get_g13data(hdev);
+
+ if (data == NULL || data->mled_report == NULL)
+ return -ENODATA;
+
+ data->mled_report->field[0]->value[0] = mled&0x0F;
+ data->mled_report->field[0]->value[1] = 0x00;
+ data->mled_report->field[0]->value[2] = 0x00;
+ data->mled_report->field[0]->value[3] = 0x00;
+
+ usbhid_submit_report(hdev, data->mled_report, USB_DIR_OUT);
+
+ data->mled = mled;
+
+ return 0;
+}
+
+static ssize_t g13_mled_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hdev;
+ int i;
+ unsigned m[4], mled;
+ ssize_t set_result;
+
+ /* Get the hid associated with the device */
+ hdev = container_of(dev, struct hid_device, dev);
+
+ /* If we have an invalid pointer we'll return ENODATA */
+ if (hdev == NULL || &(hdev->dev) != dev)
+ return -ENODATA;
+
+ i = sscanf(buf, "%u %u %u %u", m, m+1, m+2, m+3);
+ if (!(i == 4 || i == 1)) {
+ printk(KERN_ERR "unrecognized input: %s", buf);
+ return -1;
+ }
+
+ if (i == 1)
+ mled = m[0];
+ else
+ mled = (m[0] ? 1 : 0) | (m[1] ? 2 : 0) |
+ (m[2] ? 4 : 0) | (m[3] ? 8 : 0);
+
+ set_result = g13_set_mled(hdev, mled);
+
+ if (set_result < 0)
+ return set_result;
+
+ return count;
+}
+
+static DEVICE_ATTR(mled, 0666, g13_mled_show, g13_mled_store);
+
+/*
+ * Create a group of attributes so that we can create and destroy them all
+ * at once.
+ */
+static struct attribute *g13_attrs[] = {
+ &dev_attr_name.attr,
+ &dev_attr_rgb.attr,
+ &dev_attr_mled.attr,
+ &dev_attr_keymap_index.attr,
+ &dev_attr_emit_msc_raw.attr,
+ &dev_attr_keymap_switching.attr,
+ &dev_attr_keymap.attr,
+ &dev_attr_fb_update_rate.attr,
+ &dev_attr_fb_node.attr,
+ NULL, /* need to NULL terminate the list of attributes */
+};
+
+/*
+ * An unnamed attribute group will put all of the attributes directly in
+ * the kobject directory. If we specify a name, a subdirectory will be
+ * created for the attributes with the directory being the name of the
+ * attribute group.
+ */
+static struct attribute_group g13_attr_group = {
+ .attrs = g13_attrs,
+};
+
+static struct fb_deferred_io g13_fb_defio = {
+ .delay = HZ / G13FB_UPDATE_RATE_DEFAULT,
+ .deferred_io = g13_fb_deferred_io,
+};
+
+static int g13_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int error;
+ struct g13_data *data;
+ int i;
+ struct list_head *feature_report_list =
+ &hdev->report_enum[HID_FEATURE_REPORT].report_list;
+ struct hid_report *report;
+
+/* hid_debug = 1; */
+
+ dev_dbg(&hdev->dev, "Logitech G13 HID hardware probe...");
+
+ /* Let's allocate the g13 data structure, set some reasonable
+ defaults, and associate it with the device */
+ data = kzalloc(sizeof(struct g13_data), GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(&hdev->dev,
+ "can't allocate space for Logitech G13 device attributes\n");
+ error = -ENOMEM;
+ goto err_no_cleanup;
+ }
+
+ rwlock_init(&data->lock);
+
+ data->hdev = hdev;
+
+ data->fb_bitmap = vmalloc(G13FB_SIZE);
+ if (data->fb_bitmap == NULL) {
+ dev_err(&hdev->dev,
+ G13_NAME
+ ": ERROR: can't get a free page for framebuffer\n");
+ error = -ENOMEM;
+ goto err_cleanup_data;
+ }
+ memcpy(data->fb_bitmap, g13_lcd_bits, G13FB_SIZE);
+
+ data->fb_vbitmap = kmalloc(sizeof(u8) * G13_VBITMAP_SIZE, GFP_KERNEL);
+ if (data->fb_vbitmap == NULL) {
+ dev_err(&hdev->dev,
+ G13_NAME
+ ": ERROR: can't alloc vbitmap image buffer (%i bytes)\n",
+ G13_VBITMAP_SIZE);
+ error = -ENOMEM;
+ goto err_cleanup_fb_bitmap;
+ }
+
+ hid_set_drvdata(hdev, data);
+
+ dbg_hid("Preparing to parse " G13_NAME " hid reports\n");
+
+ /* Parse the device reports and start it up */
+ error = hid_parse(hdev);
+ if (error) {
+ dev_err(&hdev->dev, G13_NAME " device report parse failed\n");
+ error = -EINVAL;
+ goto err_cleanup_fb_vbitmap;
+ }
+
+ mdelay(10);
+
+ error = hid_hw_start(hdev,
+ HID_CONNECT_DEFAULT | HID_CONNECT_HIDINPUT_FORCE);
+ if (error) {
+ dev_err(&hdev->dev, G13_NAME " hardware start failed\n");
+ error = -EINVAL;
+ goto err_cleanup_fb_vbitmap;
+ }
+
+ dbg_hid(G13_NAME " claimed: %d\n", hdev->claimed);
+
+ error = hdev->ll_driver->open(hdev);
+ if (error) {
+ dev_err(&hdev->dev,
+ G13_NAME
+ " failed to open input interrupt pipe for key and "
+ "joystick events\n");
+ error = -EINVAL;
+ goto err_cleanup_fb_vbitmap;
+ }
+
+ /* Set up the input device for the key I/O */
+ data->input_dev = input_allocate_device();
+ if (data->input_dev == NULL) {
+ dev_err(&hdev->dev,
+ G13_NAME " error initializing the input device");
+ error = -ENOMEM;
+ goto err_cleanup_fb_vbitmap;
+ }
+
+ input_set_drvdata(data->input_dev, hdev);
+
+ data->input_dev->name = G13_NAME;
+ data->input_dev->phys = hdev->phys;
+ data->input_dev->uniq = hdev->uniq;
+ data->input_dev->id.bustype = hdev->bus;
+ data->input_dev->id.vendor = hdev->vendor;
+ data->input_dev->id.product = hdev->product;
+ data->input_dev->id.version = hdev->version;
+ data->input_dev->dev.parent = hdev->dev.parent;
+ data->input_dev->keycode = data->keycode;
+ data->input_dev->keycodemax = G13_KEYMAP_SIZE;
+ data->input_dev->keycodesize = sizeof(u32);
+ data->input_dev->setkeycode = g13_input_setkeycode;
+ data->input_dev->getkeycode = g13_input_getkeycode;
+
+ input_set_capability(data->input_dev, EV_ABS, ABS_X);
+ input_set_capability(data->input_dev, EV_ABS, ABS_Y);
+ input_set_capability(data->input_dev, EV_MSC, MSC_SCAN);
+ input_set_capability(data->input_dev, EV_KEY, KEY_UNKNOWN);
+ data->input_dev->evbit[0] |= BIT_MASK(EV_REP);
+
+ /* 4 center values */
+ input_set_abs_params(data->input_dev, ABS_X, 0, 0xff, 0, 4);
+ input_set_abs_params(data->input_dev, ABS_Y, 0, 0xff, 0, 4);
+
+ g13_initialize_keymap(data);
+
+ error = input_register_device(data->input_dev);
+ if (error) {
+ dev_err(&hdev->dev,
+ G13_NAME " error registering the input device");
+ error = -EINVAL;
+ goto err_cleanup_input_dev;
+ }
+
+ /* Set up the framebuffer device */
+ data->fb_update_rate = G13FB_UPDATE_RATE_DEFAULT;
+ data->fb_info = framebuffer_alloc(0, &hdev->dev);
+ if (data->fb_info == NULL) {
+ dev_err(&hdev->dev,
+ G13_NAME " failed to allocate a framebuffer\n");
+ goto err_cleanup_input_dev;
+ }
+
+ dbg_hid(KERN_INFO G13_NAME " allocated framebuffer\n");
+
+ data->fb_defio = g13_fb_defio;
+ data->fb_info->fbdefio = &data->fb_defio;
+
+ dbg_hid(KERN_INFO G13_NAME " allocated deferred IO structure\n");
+
+ data->fb_info->screen_base = (char __force __iomem *) data->fb_bitmap;
+ data->fb_info->fbops = &g13fb_ops;
+ data->fb_info->var = g13fb_var;
+ data->fb_info->fix = g13fb_fix;
+ data->fb_info->fix.smem_len = G13FB_SIZE;
+ data->fb_info->par = data;
+ data->fb_info->flags = FBINFO_FLAG_DEFAULT;
+
+ fb_deferred_io_init(data->fb_info);
+
+ if (register_framebuffer(data->fb_info) < 0)
+ goto err_cleanup_fb;
+
+ /* Add the sysfs attributes */
+ error = sysfs_create_group(&(hdev->dev.kobj), &g13_attr_group);
+ if (error) {
+ dev_err(&hdev->dev,
+ "Logitech G13 failed to create sysfs group attributes\n");
+ goto err_cleanup_fb;
+ }
+
+ dbg_hid("Waiting for G13 to activate\n");
+
+ if (list_empty(feature_report_list)) {
+ dev_err(&hdev->dev, "no feature report found\n");
+ error = -ENODEV;
+ goto err_cleanup_fb;
+ }
+ dbg_hid("G13 feature report found\n");
+
+ list_for_each_entry(report, feature_report_list, list) {
+ switch (report->id) {
+ case 0x04:
+ data->report_4 = report;
+ break;
+ case 0x05:
+ data->mled_report = report;
+ break;
+ case 0x06:
+ data->start_input_report = report;
+ break;
+ case 0x07:
+ data->backlight_report = report;
+ break;
+ default:
+ break;
+ }
+ dbg_hid("G13 Feature report: id=%u type=%u size=%u maxfield=%u"
+ " report_count=%u\n",
+ report->id, report->type, report->size,
+ report->maxfield, report->field[0]->report_count);
+ }
+
+ dbg_hid("Found all reports\n");
+
+ for (i = 0; i < 20; i++) {
+ if (data->ready && data->ready2)
+ break;
+ mdelay(10);
+ }
+
+ if (!(data->ready && data->ready2))
+ printk(KERN_ERR
+ "G13 hasn't responded yet, "
+ "forging ahead with initialization\n");
+ else
+ dbg_hid("G13 initialized\n");
+
+ /* Set the initial color and load the linux logo
+ We're going to ignore the error values. If there is an error at this
+ point we'll forge ahead. */
+
+ dbg_hid("Set default color\n");
+
+ error = g13_set_rgb(hdev,
+ G13_DEFAULT_RED,
+ G13_DEFAULT_GREEN,
+ G13_DEFAULT_BLUE);
+
+ usbhid_submit_report(hdev, data->start_input_report, USB_DIR_IN);
+
+ g13_fb_update(data);
+
+ dbg_hid("G13 activated and initialized\n");
+
+/* hid_debug = 0; */
+
+ /* Everything went well */
+ return 0;
+
+err_cleanup_fb:
+ framebuffer_release(data->fb_info);
+
+err_cleanup_input_dev:
+ input_free_device(data->input_dev);
+
+err_cleanup_fb_vbitmap:
+ kfree(data->fb_vbitmap);
+
+err_cleanup_fb_bitmap:
+ vfree(data->fb_bitmap);
+
+err_cleanup_data:
+ /* Make sure we clean up the allocated data structure */
+ kfree(data);
+
+err_no_cleanup:
+
+ hid_set_drvdata(hdev, NULL);
+
+/* hid_debug = 0; */
+
+ return error;
+}
+
+static void g13_remove(struct hid_device *hdev)
+{
+ struct g13_data *data;
+
+ hdev->ll_driver->close(hdev);
+
+ hid_hw_stop(hdev);
+
+ /* Get the internal g13 data buffer */
+ data = hid_get_drvdata(hdev);
+
+ /* Clean up the buffer */
+ if (data != NULL) {
+ write_lock(&data->lock);
+ input_unregister_device(data->input_dev);
+ kfree(data->name);
+ write_unlock(&data->lock);
+ if (data->fb_info != NULL) {
+ fb_deferred_io_cleanup(data->fb_info);
+ unregister_framebuffer(data->fb_info);
+ framebuffer_release(data->fb_info);
+ }
+ vfree(data->fb_bitmap);
+ kfree(data->fb_vbitmap);
+ kfree(data);
+ }
+
+}
+
+static const struct hid_device_id g13_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G13)
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, g13_devices);
+
+static struct hid_driver g13_driver = {
+ .name = "hid-g13",
+ .id_table = g13_devices,
+ .probe = g13_probe,
+ .remove = g13_remove,
+ .raw_event = g13_raw_event,
+};
+
+static int __init g13_init(void)
+{
+ pr_debug("g13 HID driver loaded");
+ return hid_register_driver(&g13_driver);
+}
+
+static void __exit g13_exit(void)
+{
+ pr_debug("g13 HID driver unloaded");
+ hid_unregister_driver(&g13_driver);
+}
+
+module_init(g13_init);
+module_exit(g13_exit);
+MODULE_DESCRIPTION("Logitech G13 HID Driver");
+MODULE_AUTHOR("Rick L Vinyard Jr (rvinyard@...nmsu.edu)");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 3839340..f3e27d3 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -295,6 +295,7 @@
#define USB_DEVICE_ID_LOGITECH_EXTREME_3D 0xc215
#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2 0xc218
#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2 0xc219
+#define USB_DEVICE_ID_LOGITECH_G13 0xc21c
#define USB_DEVICE_ID_LOGITECH_WINGMAN_F3D 0xc283
#define USB_DEVICE_ID_LOGITECH_FORCE3D_PRO 0xc286
#define USB_DEVICE_ID_LOGITECH_WHEEL 0xc294
--
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