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Subject[patch 027/123] Staging: mimio: remove the mimio driver
2.6.33-stable review patch.  If anyone has any objections, please let me know.

-----------------

From: Greg Kroah-Hartman <gregkh@suse.de>

commit e37bcc0de040127281de13a84a608570355c20eb upstream.

It turns out that Mimio has a userspace solution for this product using
libusb, and the in-kernel driver is just getting in the way now and
causing problems. So they have asked that the in-kernel driver be
removed. As the staging driver wasn't quite working anyway, and Mimio
supports their libusb solution for all distros, I am removing the
in-kernel driver.

The libusb solution can be downloaded from:
http://www.mimio.com/downloads/mimio_studio_software/linux.asp

Cc: <mwilder@cs.nmsu.edu>
Cc: Phil Hannent <phil@hannent.co.uk>
Cc: Marc Rousseau <Marc.Rousseau@mimio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/staging/Kconfig | 2
drivers/staging/Makefile | 1
drivers/staging/mimio/Kconfig | 10
drivers/staging/mimio/Makefile | 1
drivers/staging/mimio/mimio.c | 914 -----------------------------------------
5 files changed, 928 deletions(-)

--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -81,8 +81,6 @@ source "drivers/staging/rtl8192u/Kconfig

source "drivers/staging/rtl8192e/Kconfig"

-source "drivers/staging/mimio/Kconfig"
-
source "drivers/staging/frontier/Kconfig"

source "drivers/staging/dream/Kconfig"
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -23,7 +23,6 @@ obj-$(CONFIG_R8187SE) += rtl8187se/
obj-$(CONFIG_RTL8192SU) += rtl8192su/
obj-$(CONFIG_RTL8192U) += rtl8192u/
obj-$(CONFIG_RTL8192E) += rtl8192e/
-obj-$(CONFIG_INPUT_MIMIO) += mimio/
obj-$(CONFIG_TRANZPORT) += frontier/
obj-$(CONFIG_DREAM) += dream/
obj-$(CONFIG_POHMELFS) += pohmelfs/
--- a/drivers/staging/mimio/Kconfig
+++ /dev/null
@@ -1,10 +0,0 @@
-config INPUT_MIMIO
- tristate "Mimio Xi interactive whiteboard support"
- depends on USB && INPUT
- default N
- help
- Say Y here if you want to use a Mimio Xi interactive
- whiteboard device.
-
- To compile this driver as a module, choose M here: the
- module will be called mimio.
--- a/drivers/staging/mimio/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_INPUT_MIMIO) += mimio.o
--- a/drivers/staging/mimio/mimio.c
+++ /dev/null
@@ -1,914 +0,0 @@
-/*
- * Hardware event => input event mapping:
- *
- *
- *
- input.h:#define BTN_TOOL_PEN 0x140 black
- input.h:#define BTN_TOOL_RUBBER 0x141 blue
- input.h:#define BTN_TOOL_BRUSH 0x142 green
- input.h:#define BTN_TOOL_PENCIL 0x143 red
- input.h:#define BTN_TOOL_AIRBRUSH 0x144 eraser
- input.h:#define BTN_TOOL_FINGER 0x145 small eraser
- input.h:#define BTN_TOOL_MOUSE 0x146 mimio interactive
- input.h:#define BTN_TOOL_LENS 0x147 mimio interactive but1
- input.h:#define LOCALBTN_TOOL_EXTRA1 0x14a mimio interactive but2 == BTN_TOUCH
- input.h:#define LOCALBTN_TOOL_EXTRA2 0x14b mimio extra pens (orange, brown, yellow, purple) == BTN_STYLUS
- input.h:#define LOCALBTN_TOOL_EXTRA3 0x14c unused == BTN_STYLUS2
- input.h:#define BTN_TOOL_DOUBLETAP 0x14d unused
- input.h:#define BTN_TOOL_TRIPLETAP 0x14e unused
- *
- * MIMIO_EV_PENDOWN(MIMIO_PEN_K) => EV_KEY BIT(BTN_TOOL_PEN)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_B) => EV_KEY BIT(BTN_TOOL_RUBBER)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_G) => EV_KEY BIT(BTN_TOOL_BRUSH)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_R) => EV_KEY BIT(BTN_TOOL_PENCIL)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_E) => EV_KEY BIT(BTN_TOOL_AIRBRUSH)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_ES) => EV_KEY BIT(BTN_TOOL_FINGER)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_I) => EV_KEY BIT(BTN_TOOL_MOUSE)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_IL) => EV_KEY BIT(BTN_TOOL_LENS)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_IR) => EV_KEY BIT(BTN_TOOL_DOUBLETAP)
- * MIMIO_EV_PENDOWN(MIMIO_PEN_EX) => EV_KEY BIT(BTN_TOOL_TRIPLETAP)
- * MIMIO_EV_PENDATA => EV_ABS BIT(ABS_X), BIT(ABS_Y)
- * MIMIO_EV_MEMRESET => EV_KEY BIT(BTN_0)
- * MIMIO_EV_ACC(ACC_NEWPAGE) => EV_KEY BIT(BTN_1)
- * MIMIO_EV_ACC(ACC_TAGPAGE) => EV_KEY BIT(BTN_2)
- * MIMIO_EV_ACC(ACC_PRINTPAGE) => EV_KEY BIT(BTN_3)
- * MIMIO_EV_ACC(ACC_MAXIMIZE) => EV_KEY BIT(BTN_4)
- * MIMIO_EV_ACC(ACC_FINDCTLPNL) => EV_KEY BIT(BTN_5)
- *
- *
- * open issues:
- * - cold-load of data captured when mimio in standalone mode not yet
- * supported; need to snoop Win32 box to see datastream for this.
- * - mimio mouse not yet supported; need to snoop Win32 box to see the
- * datastream for this.
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/input.h>
-#include <linux/usb.h>
-
-#define DRIVER_VERSION "v0.031"
-#define DRIVER_AUTHOR "mwilder@cs.nmsu.edu"
-#define DRIVER_DESC "USB mimio-xi driver"
-
-enum {UPVALUE, DOWNVALUE, MOVEVALUE};
-
-#define MIMIO_XRANGE_MAX 9600
-#define MIMIO_YRANGE_MAX 4800
-
-#define LOCALBTN_TOOL_EXTRA1 BTN_TOUCH
-#define LOCALBTN_TOOL_EXTRA2 BTN_STYLUS
-#define LOCALBTN_TOOL_EXTRA3 BTN_STYLUS2
-
-#define MIMIO_VENDOR_ID 0x08d3
-#define MIMIO_PRODUCT_ID 0x0001
-#define MIMIO_MAXPAYLOAD (8)
-#define MIMIO_MAXNAMELEN (64)
-#define MIMIO_TXWAIT (1)
-#define MIMIO_TXDONE (2)
-
-#define MIMIO_EV_PENDOWN (0x22)
-#define MIMIO_EV_PENDATA (0x24)
-#define MIMIO_EV_PENUP (0x51)
-#define MIMIO_EV_MEMRESET (0x45)
-#define MIMIO_EV_ACC (0xb2)
-
-#define MIMIO_PEN_K (1) /* black pen */
-#define MIMIO_PEN_B (2) /* blue pen */
-#define MIMIO_PEN_G (3) /* green pen */
-#define MIMIO_PEN_R (4) /* red pen */
-/* 5, 6, 7, 8 are extra pens */
-#define MIMIO_PEN_E (9) /* big eraser */
-#define MIMIO_PEN_ES (10) /* lil eraser */
-#define MIMIO_PENJUMP_START (10)
-#define MIMIO_PENJUMP (6)
-#define MIMIO_PEN_I (17) /* mimio interactive */
-#define MIMIO_PEN_IL (18) /* mimio interactive button 1 */
-#define MIMIO_PEN_IR (19) /* mimio interactive button 2 */
-
-#define MIMIO_PEN_MAX (MIMIO_PEN_IR)
-
-#define ACC_DONE (0)
-#define ACC_NEWPAGE (1)
-#define ACC_TAGPAGE (2)
-#define ACC_PRINTPAGE (4)
-#define ACC_MAXIMIZE (8)
-#define ACC_FINDCTLPNL (16)
-
-#define isvalidtxsize(n) ((n) > 0 && (n) <= MIMIO_MAXPAYLOAD)
-
-
-struct pktbuf {
- unsigned char instr;
- unsigned char buf[16];
- unsigned char *p;
- unsigned char *q;
-};
-
-struct usbintendpt {
- dma_addr_t dma;
- struct urb *urb;
- unsigned char *buf;
- struct usb_endpoint_descriptor *desc;
-};
-
-struct mimio {
- struct input_dev *idev;
- struct usb_device *udev;
- struct usb_interface *uifc;
- int open;
- int present;
- int greeted;
- int txflags;
- char phys[MIMIO_MAXNAMELEN];
- struct usbintendpt in;
- struct usbintendpt out;
- struct pktbuf pktbuf;
- unsigned char minor;
- wait_queue_head_t waitq;
- spinlock_t txlock;
- void (*rxhandler)(struct mimio *, unsigned char *, unsigned int);
- int last_pen_down;
-};
-
-static void mimio_close(struct input_dev *);
-static void mimio_dealloc(struct mimio *);
-static void mimio_disconnect(struct usb_interface *);
-static int mimio_greet(struct mimio *);
-static void mimio_irq_in(struct urb *);
-static void mimio_irq_out(struct urb *);
-static int mimio_open(struct input_dev *);
-static int mimio_probe(struct usb_interface *, const struct usb_device_id *);
-static void mimio_rx_handler(struct mimio *, unsigned char *, unsigned int);
-static int mimio_tx(struct mimio *, const char *, int);
-
-static char mimio_name[] = "VirtualInk mimio-Xi";
-static struct usb_device_id mimio_table [] = {
- { USB_DEVICE(MIMIO_VENDOR_ID, MIMIO_PRODUCT_ID) },
- { USB_DEVICE(0x0525, 0xa4a0) }, /* gadget zero firmware */
- { }
-};
-
-MODULE_DEVICE_TABLE(usb, mimio_table);
-
-static struct usb_driver mimio_driver = {
- .name = "mimio",
- .probe = mimio_probe,
- .disconnect = mimio_disconnect,
- .id_table = mimio_table,
-};
-
-static DECLARE_MUTEX(disconnect_sem);
-
-static void mimio_close(struct input_dev *idev)
-{
- struct mimio *mimio;
-
- mimio = input_get_drvdata(idev);
- if (!mimio) {
- dev_err(&idev->dev, "null mimio attached to input device\n");
- return;
- }
-
- if (mimio->open <= 0)
- dev_err(&idev->dev, "mimio not open.\n");
- else
- mimio->open--;
-
- if (mimio->present == 0 && mimio->open == 0)
- mimio_dealloc(mimio);
-}
-
-static void mimio_dealloc(struct mimio *mimio)
-{
- if (mimio == NULL)
- return;
-
- usb_kill_urb(mimio->in.urb);
-
- usb_kill_urb(mimio->out.urb);
-
- if (mimio->idev) {
- input_unregister_device(mimio->idev);
- if (mimio->idev->grab)
- input_close_device(mimio->idev->grab);
- else
- dev_dbg(&mimio->idev->dev, "mimio->idev->grab == NULL"
- " -- didn't call input_close_device\n");
- }
-
- usb_free_urb(mimio->in.urb);
-
- usb_free_urb(mimio->out.urb);
-
- if (mimio->in.buf) {
- usb_buffer_free(mimio->udev, MIMIO_MAXPAYLOAD, mimio->in.buf,
- mimio->in.dma);
- }
-
- if (mimio->out.buf)
- usb_buffer_free(mimio->udev, MIMIO_MAXPAYLOAD, mimio->out.buf,
- mimio->out.dma);
-
- if (mimio->idev)
- input_free_device(mimio->idev);
-
- kfree(mimio);
-}
-
-static void mimio_disconnect(struct usb_interface *ifc)
-{
- struct mimio *mimio;
-
- down(&disconnect_sem);
-
- mimio = usb_get_intfdata(ifc);
- usb_set_intfdata(ifc, NULL);
- dev_dbg(&mimio->idev->dev, "disconnect\n");
-
- if (mimio) {
- mimio->present = 0;
-
- if (mimio->open <= 0)
- mimio_dealloc(mimio);
- }
-
- up(&disconnect_sem);
-}
-
-static int mimio_greet(struct mimio *mimio)
-{
- const struct grtpkt {
- int nbytes;
- unsigned delay;
- char data[8];
- } grtpkts[] = {
- { 3, 0, { 0x11, 0x55, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x53, 0x55, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x43, 0x55, 0x00, 0x00, 0x16, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x33, 0x55, 0x00, 0x00, 0x66, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x13, 0x00, 0x5e, 0x02, 0x4f, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x13, 0x00, 0x04, 0x03, 0x14, 0x00, 0x00, 0x00 } },
- { 5, 2, { 0x13, 0x00, 0x00, 0x04, 0x17, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x13, 0x00, 0x0d, 0x08, 0x16, 0x00, 0x00, 0x00 } },
- { 5, 0, { 0x13, 0x00, 0x4d, 0x01, 0x5f, 0x00, 0x00, 0x00 } },
- { 3, 0, { 0xf1, 0x55, 0xa4, 0x00, 0x00, 0x00, 0x00, 0x00 } },
- { 7, 2, { 0x52, 0x55, 0x00, 0x07, 0x31, 0x55, 0x64, 0x00 } },
- { 0, 0, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } },
- };
- int rslt;
- const struct grtpkt *pkt;
-
- for (pkt = grtpkts; pkt->nbytes; pkt++) {
- rslt = mimio_tx(mimio, pkt->data, pkt->nbytes);
- if (rslt)
- return rslt;
- if (pkt->delay)
- msleep(pkt->delay);
- }
-
- return 0;
-}
-
-static void mimio_irq_in(struct urb *urb)
-{
- int rslt;
- char *data;
- const char *reason = "going down";
- struct mimio *mimio;
-
- mimio = urb->context;
-
- if (mimio == NULL)
- /* paranoia */
- return;
-
- switch (urb->status) {
- case 0:
- /* success */
- break;
- case -ETIMEDOUT:
- reason = "timeout -- unplugged?";
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- dev_dbg(&mimio->idev->dev, "%s.\n", reason);
- return;
- default:
- dev_dbg(&mimio->idev->dev, "unknown urb-status: %d.\n",
- urb->status);
- goto exit;
- }
- data = mimio->in.buf;
-
- if (mimio->rxhandler)
- mimio->rxhandler(mimio, data, urb->actual_length);
-exit:
- /*
- * Keep listening to device on same urb.
- */
- rslt = usb_submit_urb(urb, GFP_ATOMIC);
- if (rslt)
- dev_err(&mimio->idev->dev, "usb_submit_urb failure: %d.\n",
- rslt);
-}
-
-static void mimio_irq_out(struct urb *urb)
-{
- unsigned long flags;
- struct mimio *mimio;
-
- mimio = urb->context;
-
- if (urb->status)
- dev_dbg(&mimio->idev->dev, "urb-status: %d.\n", urb->status);
-
- spin_lock_irqsave(&mimio->txlock, flags);
- mimio->txflags |= MIMIO_TXDONE;
- spin_unlock_irqrestore(&mimio->txlock, flags);
- wmb();
- wake_up(&mimio->waitq);
-}
-
-static int mimio_open(struct input_dev *idev)
-{
- int rslt;
- struct mimio *mimio;
-
- rslt = 0;
- down(&disconnect_sem);
- mimio = input_get_drvdata(idev);
- dev_dbg(&idev->dev, "mimio_open\n");
-
- if (mimio == NULL) {
- dev_err(&idev->dev, "null mimio.\n");
- rslt = -ENODEV;
- goto exit;
- }
-
- if (mimio->open++)
- goto exit;
-
- if (mimio->present && !mimio->greeted) {
- struct urb *urb = mimio->in.urb;
- mimio->in.urb->dev = mimio->udev;
- rslt = usb_submit_urb(mimio->in.urb, GFP_KERNEL);
- if (rslt) {
- dev_err(&idev->dev, "usb_submit_urb failure "
- "(res = %d: %s). Not greeting.\n",
- rslt,
- (!urb ? "urb is NULL" :
- (urb->hcpriv ? "urb->hcpriv is non-NULL" :
- (!urb->complete ? "urb is not complete" :
- (urb->number_of_packets <= 0 ? "urb has no packets" :
- (urb->interval <= 0 ? "urb interval too small" :
- "urb interval too large or some other error"))))));
- rslt = -EIO;
- goto exit;
- }
- rslt = mimio_greet(mimio);
- if (rslt == 0) {
- dev_dbg(&idev->dev, "Mimio greeted OK.\n");
- mimio->greeted = 1;
- } else {
- dev_dbg(&idev->dev, "Mimio greet Failure (%d)\n",
- rslt);
- }
- }
-
-exit:
- up(&disconnect_sem);
- return rslt;
-}
-
-static int mimio_probe(struct usb_interface *ifc,
- const struct usb_device_id *id)
-{
- char path[64];
- int pipe, maxp;
- struct mimio *mimio;
- struct usb_device *udev;
- struct usb_host_interface *hostifc;
- struct input_dev *input_dev;
- int res = 0;
- int i;
-
- udev = interface_to_usbdev(ifc);
-
- mimio = kzalloc(sizeof(struct mimio), GFP_KERNEL);
- if (!mimio)
- return -ENOMEM;
-
- input_dev = input_allocate_device();
- if (!input_dev) {
- mimio_dealloc(mimio);
- return -ENOMEM;
- }
-
- mimio->uifc = ifc;
- mimio->udev = udev;
- mimio->pktbuf.p = mimio->pktbuf.buf;
- mimio->pktbuf.q = mimio->pktbuf.buf;
- /* init_input_dev(mimio->idev); */
- mimio->idev = input_dev;
- init_waitqueue_head(&mimio->waitq);
- spin_lock_init(&mimio->txlock);
- hostifc = ifc->cur_altsetting;
-
- if (hostifc->desc.bNumEndpoints != 2) {
- dev_err(&udev->dev, "Unexpected endpoint count: %d.\n",
- hostifc->desc.bNumEndpoints);
- mimio_dealloc(mimio);
- return -ENODEV;
- }
-
- mimio->in.desc = &(hostifc->endpoint[0].desc);
- mimio->out.desc = &(hostifc->endpoint[1].desc);
-
- mimio->in.buf = usb_buffer_alloc(udev, MIMIO_MAXPAYLOAD, GFP_KERNEL,
- &mimio->in.dma);
- mimio->out.buf = usb_buffer_alloc(udev, MIMIO_MAXPAYLOAD, GFP_KERNEL,
- &mimio->out.dma);
-
- if (mimio->in.buf == NULL || mimio->out.buf == NULL) {
- dev_err(&udev->dev, "usb_buffer_alloc failure.\n");
- mimio_dealloc(mimio);
- return -ENOMEM;
- }
-
- mimio->in.urb = usb_alloc_urb(0, GFP_KERNEL);
- mimio->out.urb = usb_alloc_urb(0, GFP_KERNEL);
-
- if (mimio->in.urb == NULL || mimio->out.urb == NULL) {
- dev_err(&udev->dev, "usb_alloc_urb failure.\n");
- mimio_dealloc(mimio);
- return -ENOMEM;
- }
-
- /*
- * Build the input urb.
- */
- pipe = usb_rcvintpipe(udev, mimio->in.desc->bEndpointAddress);
- maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
- if (maxp > MIMIO_MAXPAYLOAD)
- maxp = MIMIO_MAXPAYLOAD;
- usb_fill_int_urb(mimio->in.urb, udev, pipe, mimio->in.buf, maxp,
- mimio_irq_in, mimio, mimio->in.desc->bInterval);
- mimio->in.urb->transfer_dma = mimio->in.dma;
- mimio->in.urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
- /*
- * Build the output urb.
- */
- pipe = usb_sndintpipe(udev, mimio->out.desc->bEndpointAddress);
- maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
- if (maxp > MIMIO_MAXPAYLOAD)
- maxp = MIMIO_MAXPAYLOAD;
- usb_fill_int_urb(mimio->out.urb, udev, pipe, mimio->out.buf, maxp,
- mimio_irq_out, mimio, mimio->out.desc->bInterval);
- mimio->out.urb->transfer_dma = mimio->out.dma;
- mimio->out.urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
- /*
- * Build input device info
- */
- usb_make_path(udev, path, 64);
- snprintf(mimio->phys, MIMIO_MAXNAMELEN, "%s/input0", path);
- input_set_drvdata(input_dev, mimio);
- /* input_dev->dev = &ifc->dev; */
- input_dev->open = mimio_open;
- input_dev->close = mimio_close;
- input_dev->name = mimio_name;
- input_dev->phys = mimio->phys;
- input_dev->dev.parent = &ifc->dev;
-
- input_dev->id.bustype = BUS_USB;
- input_dev->id.vendor = le16_to_cpu(udev->descriptor.idVendor);
- input_dev->id.product = le16_to_cpu(udev->descriptor.idProduct);
- input_dev->id.version = le16_to_cpu(udev->descriptor.bcdDevice);
-
- input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
- for (i = BTN_TOOL_PEN; i <= LOCALBTN_TOOL_EXTRA2; ++i)
- set_bit(i, input_dev->keybit);
-
- input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) |
- BIT_MASK(BTN_1) |
- BIT_MASK(BTN_2) |
- BIT_MASK(BTN_3) |
- BIT_MASK(BTN_4) |
- BIT_MASK(BTN_5);
- /* input_dev->keybit[BTN_MOUSE] |= BIT(BTN_LEFT); */
- input_dev->absbit[0] |= BIT_MASK(ABS_X) | BIT_MASK(ABS_Y);
- input_set_abs_params(input_dev, ABS_X, 0, MIMIO_XRANGE_MAX, 0, 0);
- input_set_abs_params(input_dev, ABS_Y, 0, MIMIO_YRANGE_MAX, 0, 0);
- input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
-
-#if 0
- input_dev->absmin[ABS_X] = 0;
- input_dev->absmin[ABS_Y] = 0;
- input_dev->absmax[ABS_X] = 9600;
- input_dev->absmax[ABS_Y] = 4800;
- input_dev->absfuzz[ABS_X] = 0;
- input_dev->absfuzz[ABS_Y] = 0;
- input_dev->absflat[ABS_X] = 0;
- input_dev->absflat[ABS_Y] = 0;
-#endif
-
-#if 0
- /* this will just reduce the precision */
- input_dev->absfuzz[ABS_X] = 8; /* experimental; may need to change */
- input_dev->absfuzz[ABS_Y] = 8; /* experimental; may need to change */
-#endif
-
- /*
- * Register the input device.
- */
- res = input_register_device(mimio->idev);
- if (res) {
- dev_err(&udev->dev, "input_register_device failure (%d)\n",
- res);
- mimio_dealloc(mimio);
- return -EIO;
- }
- dev_dbg(&mimio->idev->dev, "input: %s on %s (res = %d).\n",
- input_dev->name, input_dev->phys, res);
-
- usb_set_intfdata(ifc, mimio);
- mimio->present = 1;
-
- /*
- * Submit the input urb to the usb subsystem.
- */
- mimio->in.urb->dev = mimio->udev;
- res = usb_submit_urb(mimio->in.urb, GFP_KERNEL);
- if (res) {
- dev_err(&mimio->idev->dev, "usb_submit_urb failure (%d)\n",
- res);
- mimio_dealloc(mimio);
- return -EIO;
- }
-
- /*
- * Attempt to greet the mimio after giving
- * it some post-init settling time.
- *
- * note: sometimes this sleep interval isn't
- * long enough to permit the device to re-init
- * after a hot-swap; maybe need to bump it up.
- *
- * As it is, this probably breaks module unloading support!
- */
- msleep(1024);
-
- res = mimio_greet(mimio);
- if (res == 0) {
- dev_dbg(&mimio->idev->dev, "Mimio greeted OK.\n");
- mimio->greeted = 1;
- mimio->rxhandler = mimio_rx_handler;
- } else {
- dev_dbg(&mimio->idev->dev, "Mimio greet Failure (%d)\n", res);
- }
-
- return 0;
-}
-
-static int handle_mimio_rx_penupdown(struct mimio *mimio,
- int down,
- const char *const instr[],
- const int instr_ofst[])
-{
- int penid, x;
- if (mimio->pktbuf.q - mimio->pktbuf.p < (down ? 4 : 3))
- return 1; /* partial pkt */
-
- if (down) {
- x = *mimio->pktbuf.p ^ *(mimio->pktbuf.p + 1) ^
- *(mimio->pktbuf.p + 2);
- if (x != *(mimio->pktbuf.p + 3)) {
- dev_dbg(&mimio->idev->dev, "EV_PEN%s: bad xsum.\n",
- down ? "DOWN":"UP");
- /* skip this event data */
- mimio->pktbuf.p += 4;
- /* decode any remaining events */
- return 0;
- }
- penid = mimio->pktbuf.instr = *(mimio->pktbuf.p + 2);
- if (penid > MIMIO_PEN_MAX) {
- dev_dbg(&mimio->idev->dev,
- "Unmapped penID (not in [0, %d]): %d\n",
- MIMIO_PEN_MAX, (int)mimio->pktbuf.instr);
- penid = mimio->pktbuf.instr = 0;
- }
- mimio->last_pen_down = penid;
- } else {
- penid = mimio->last_pen_down;
- }
- dev_dbg(&mimio->idev->dev, "%s (id %d, code %d) %s.\n", instr[penid],
- instr_ofst[penid], penid, down ? "down" : "up");
-
- if (instr_ofst[penid] >= 0) {
- int code = BTN_TOOL_PEN + instr_ofst[penid];
- int value = down ? DOWNVALUE : UPVALUE;
- if (code > KEY_MAX)
- dev_dbg(&mimio->idev->dev, "input_event will ignore "
- "-- code (%d) > KEY_MAX\n", code);
- if (!test_bit(code, mimio->idev->keybit))
- dev_dbg(&mimio->idev->dev, "input_event will ignore "
- "-- bit for code (%d) not enabled\n", code);
- if (!!test_bit(code, mimio->idev->key) == value)
- dev_dbg(&mimio->idev->dev, "input_event will ignore "
- "-- bit for code (%d) already set to %d\n",
- code, value);
- if (value != DOWNVALUE) {
- /* input_regs(mimio->idev, regs); */
- input_report_key(mimio->idev, code, value);
- input_sync(mimio->idev);
- } else {
- /* wait until we get some coordinates */
- }
- } else {
- dev_dbg(&mimio->idev->dev, "penID offset[%d] == %d is < 0 "
- "- not sending\n", penid, instr_ofst[penid]);
- }
- mimio->pktbuf.p += down ? 4 : 3; /* 3 for up, 4 for down */
- return 0;
-}
-
-/*
- * Stay tuned for partial-packet excitement.
- *
- * This routine buffers data packets received from the mimio device
- * in the mimio's data space. This buffering is necessary because
- * the mimio's in endpoint can serve us partial packets of data, and
- * we want the driver to support the servicing of multiple mimios.
- * Empirical evidence gathered so far suggests that the method of
- * buffering packet data in the mimio's data space works. Previous
- * versions of this driver did not buffer packet data in each mimio's
- * data-space, and were therefore not able to service multiple mimios.
- * Note that since the caller of this routine is running in interrupt
- * context, care needs to be taken to ensure that this routine does not
- * become bloated, and it may be that another spinlock is needed in each
- * mimio to guard the buffered packet data properly.
- */
-static void mimio_rx_handler(struct mimio *mimio,
- unsigned char *data,
- unsigned int nbytes)
-{
- struct device *dev = &mimio->idev->dev;
- unsigned int x;
- unsigned int y;
- static const char * const instr[] = {
- "?0",
- "black pen", "blue pen", "green pen", "red pen",
- "brown pen", "orange pen", "purple pen", "yellow pen",
- "big eraser", "lil eraser",
- "?11", "?12", "?13", "?14", "?15", "?16",
- "mimio interactive", "interactive button1",
- "interactive button2"
- };
-
- /* Mimio Interactive gives:
- * down: [0x22 0x01 0x11 0x32 0x24]
- * b1 : [0x22 0x01 0x12 0x31 0x24]
- * b2 : [0x22 0x01 0x13 0x30 0x24]
- */
- static const int instr_ofst[] = {
- -1,
- 0, 1, 2, 3,
- 9, 9, 9, 9,
- 4, 5,
- -1, -1, -1, -1, -1, -1,
- 6, 7, 8,
- };
-
- memcpy(mimio->pktbuf.q, data, nbytes);
- mimio->pktbuf.q += nbytes;
-
- while (mimio->pktbuf.p < mimio->pktbuf.q) {
- int t = *mimio->pktbuf.p;
- switch (t) {
- case MIMIO_EV_PENUP:
- case MIMIO_EV_PENDOWN:
- if (handle_mimio_rx_penupdown(mimio,
- t == MIMIO_EV_PENDOWN,
- instr, instr_ofst))
- return; /* partial packet */
- break;
-
- case MIMIO_EV_PENDATA:
- if (mimio->pktbuf.q - mimio->pktbuf.p < 6)
- /* partial pkt */
- return;
- x = *mimio->pktbuf.p ^ *(mimio->pktbuf.p + 1) ^
- *(mimio->pktbuf.p + 2) ^
- *(mimio->pktbuf.p + 3) ^
- *(mimio->pktbuf.p + 4);
- if (x != *(mimio->pktbuf.p + 5)) {
- dev_dbg(dev, "EV_PENDATA: bad xsum.\n");
- mimio->pktbuf.p += 6; /* skip this event data */
- break; /* decode any remaining events */
- }
- x = *(mimio->pktbuf.p + 1);
- x <<= 8;
- x |= *(mimio->pktbuf.p + 2);
- y = *(mimio->pktbuf.p + 3);
- y <<= 8;
- y |= *(mimio->pktbuf.p + 4);
- dev_dbg(dev, "coord: (%d, %d)\n", x, y);
- if (instr_ofst[mimio->pktbuf.instr] >= 0) {
- int code = BTN_TOOL_PEN +
- instr_ofst[mimio->last_pen_down];
-#if 0
- /* Utter hack to ensure we get forwarded _AND_
- * so we can identify when a complete signal is
- * received */
- mimio->idev->abs[ABS_Y] = -1;
- mimio->idev->abs[ABS_X] = -1;
-#endif
- /* input_regs(mimio->idev, regs); */
- input_report_abs(mimio->idev, ABS_X, x);
- input_report_abs(mimio->idev, ABS_Y, y);
- /* fake a penup */
- change_bit(code, mimio->idev->key);
- input_report_key(mimio->idev,
- code,
- DOWNVALUE);
- /* always sync here */
- mimio->idev->sync = 0;
- input_sync(mimio->idev);
- }
- mimio->pktbuf.p += 6;
- break;
- case MIMIO_EV_MEMRESET:
- if (mimio->pktbuf.q - mimio->pktbuf.p < 7)
- /* partial pkt */
- return;
- dev_dbg(dev, "mem-reset.\n");
- /* input_regs(mimio->idev, regs); */
- input_event(mimio->idev, EV_KEY, BTN_0, 1);
- input_event(mimio->idev, EV_KEY, BTN_0, 0);
- input_sync(mimio->idev);
- mimio->pktbuf.p += 7;
- break;
- case MIMIO_EV_ACC:
- if (mimio->pktbuf.q - mimio->pktbuf.p < 4)
- /* partial pkt */
- return;
- x = *mimio->pktbuf.p ^ *(mimio->pktbuf.p + 1) ^
- *(mimio->pktbuf.p + 2);
- if (x != *(mimio->pktbuf.p + 3)) {
- dev_dbg(dev, "EV_ACC: bad xsum.\n");
- mimio->pktbuf.p += 4; /* skip this event data */
- break; /* decode any remaining events */
- }
- switch (*(mimio->pktbuf.p + 2)) {
- case ACC_NEWPAGE:
- dev_dbg(&mimio->idev->dev, "new-page.\n");
- /* input_regs(mimio->idev, regs); */
- input_event(mimio->idev, EV_KEY, BTN_1, 1);
- input_event(mimio->idev, EV_KEY, BTN_1, 0);
- input_sync(mimio->idev);
- break;
- case ACC_TAGPAGE:
- dev_dbg(&mimio->idev->dev, "tag-page.\n");
- /* input_regs(mimio->idev, regs); */
- input_event(mimio->idev, EV_KEY, BTN_2, 1);
- input_event(mimio->idev, EV_KEY, BTN_2, 0);
- input_sync(mimio->idev);
- break;
- case ACC_PRINTPAGE:
- dev_dbg(&mimio->idev->dev, "print-page.\n");
- /* input_regs(mimio->idev, regs);*/
- input_event(mimio->idev, EV_KEY, BTN_3, 1);
- input_event(mimio->idev, EV_KEY, BTN_3, 0);
- input_sync(mimio->idev);
- break;
- case ACC_MAXIMIZE:
- dev_dbg(&mimio->idev->dev,
- "maximize-window.\n");
- /* input_regs(mimio->idev, regs); */
- input_event(mimio->idev, EV_KEY, BTN_4, 1);
- input_event(mimio->idev, EV_KEY, BTN_4, 0);
- input_sync(mimio->idev);
- break;
- case ACC_FINDCTLPNL:
- dev_dbg(&mimio->idev->dev, "find-ctl-panel.\n");
- /* input_regs(mimio->idev, regs); */
- input_event(mimio->idev, EV_KEY, BTN_5, 1);
- input_event(mimio->idev, EV_KEY, BTN_5, 0);
- input_sync(mimio->idev);
- break;
- case ACC_DONE:
- dev_dbg(&mimio->idev->dev, "acc-done.\n");
- /* no event is dispatched to the input
- * subsystem for this device event.
- */
- break;
- default:
- dev_dbg(dev, "unknown acc event.\n");
- break;
- }
- mimio->pktbuf.p += 4;
- break;
- default:
- mimio->pktbuf.p++;
- break;
- }
- }
-
- /*
- * No partial event was received, so reset mimio's pktbuf ptrs.
- */
- mimio->pktbuf.p = mimio->pktbuf.q = mimio->pktbuf.buf;
-}
-
-static int mimio_tx(struct mimio *mimio, const char *buf, int nbytes)
-{
- int rslt;
- int timeout;
- unsigned long flags;
- DECLARE_WAITQUEUE(wait, current);
-
- if (!(isvalidtxsize(nbytes))) {
- dev_err(&mimio->idev->dev, "invalid arg: nbytes: %d.\n",
- nbytes);
- return -EINVAL;
- }
-
- /*
- * Init the out urb and copy the data to send.
- */
- mimio->out.urb->dev = mimio->udev;
- mimio->out.urb->transfer_buffer_length = nbytes;
- memcpy(mimio->out.urb->transfer_buffer, buf, nbytes);
-
- /*
- * Send the data.
- */
- spin_lock_irqsave(&mimio->txlock, flags);
- mimio->txflags = MIMIO_TXWAIT;
- rslt = usb_submit_urb(mimio->out.urb, GFP_ATOMIC);
- spin_unlock_irqrestore(&mimio->txlock, flags);
- dev_dbg(&mimio->idev->dev, "rslt: %d.\n", rslt);
-
- if (rslt) {
- dev_err(&mimio->idev->dev, "usb_submit_urb failure: %d.\n",
- rslt);
- return rslt;
- }
-
- /*
- * Wait for completion to be signalled (the mimio_irq_out
- * completion routine will or MIMIO_TXDONE in with txflags).
- */
- timeout = HZ;
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&mimio->waitq, &wait);
-
- while (timeout && ((mimio->txflags & MIMIO_TXDONE) == 0)) {
- timeout = schedule_timeout(timeout);
- rmb();
- }
-
- if ((mimio->txflags & MIMIO_TXDONE) == 0)
- dev_dbg(&mimio->idev->dev, "tx timed out.\n");
-
- /*
- * Now that completion has been signalled,
- * unlink the urb so that it can be recycled.
- */
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&mimio->waitq, &wait);
- usb_unlink_urb(mimio->out.urb);
-
- return rslt;
-}
-
-static int __init mimio_init(void)
-{
- int rslt;
-
- rslt = usb_register(&mimio_driver);
- if (rslt != 0) {
- err("%s: usb_register failure: %d", __func__, rslt);
- return rslt;
- }
-
- printk(KERN_INFO KBUILD_MODNAME ":"
- DRIVER_DESC " " DRIVER_VERSION "\n");
- return rslt;
-}
-
-static void __exit mimio_exit(void)
-{
- usb_deregister(&mimio_driver);
-}
-
-module_init(mimio_init);
-module_exit(mimio_exit);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");



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