[PATCH] drivers/usb/input: convert to dynamic input_dev allocation

Input: convert drivers/iusb/input to dynamic input_dev allocation

This is required for input_dev sysfs integration

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 68 insertions, 62 deletions

diff --git a/drivers/usb/input/appletouch.c b/drivers/usb/input/appletouch.c
index e03c1c567a14..15840db092a5 100644
--- a/drivers/usb/input/appletouch.c
+++ b/drivers/usb/input/appletouch.c
@@ -39,7 +39,7 @@
 #define APPLE_VENDOR_ID         0x05AC
 
 #define ATP_DEVICE(prod)                                        \
-        .match_flags = USB_DEVICE_ID_MATCH_DEVICE |             \
+        .match_flags = USB_DEVICE_ID_MATCH_DEVICE |             \
                        USB_DEVICE_ID_MATCH_INT_CLASS |          \
                        USB_DEVICE_ID_MATCH_INT_PROTOCOL,        \
         .idVendor = APPLE_VENDOR_ID,                            \
@@ -78,9 +78,9 @@ MODULE_DEVICE_TABLE (usb, atp_table);
  * We try to keep the touchpad aspect ratio while still doing only simple
  * arithmetics.
  * The factors below give coordinates like:
- *      0 <= x <  960 on 12" and 15" Powerbooks
- *      0 <= x < 1600 on 17" Powerbooks
- *      0 <= y <  646
+ *      0 <= x <  960 on 12" and 15" Powerbooks
+ *      0 <= x < 1600 on 17" Powerbooks
+ *      0 <= y <  646
  */
 #define ATP_XFACT       64
 #define ATP_YFACT       43
@@ -93,11 +93,12 @@ MODULE_DEVICE_TABLE (usb, atp_table);
 
 /* Structure to hold all of our device specific stuff */
 struct atp {
+        char                    phys[64];
         struct usb_device *     udev;           /* usb device */
         struct urb *            urb;            /* usb request block */
         signed char *           data;           /* transferred data */
         int                     open;           /* non-zero if opened */
-        struct input_dev        input;          /* input dev */
+        struct input_dev        *input;         /* input dev */
         int                     valid;          /* are the sensors valid ? */
         int                     x_old;          /* last reported x/y, */
         int                     y_old;          /* used for smoothing */
@@ -114,11 +115,11 @@ struct atp {
                 int i;                                                  \
                 printk("appletouch: %s %lld", msg, (long long)jiffies); \
                 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++)       \
-                        printk(" %02x", tab[i]);                        \
-                printk("\n");                                           \
+                        printk(" %02x", tab[i]);                        \
+                printk("\n");                                           \
         }
 
-#define dprintk(format, a...)                                           \
+#define dprintk(format, a...)                                           \
         do {                                                            \
                 if (debug) printk(format, ##a);                         \
         } while (0)
@@ -219,8 +220,8 @@ static void atp_complete(struct urb* urb, struct pt_regs* regs)
                 for (i = 16; i < ATP_XSENSORS; i++)
                         if (dev->xy_cur[i]) {
                                 printk("appletouch: 17\" model detected.\n");
-                                input_set_abs_params(&dev->input, ABS_X, 0,
-                                                     (ATP_XSENSORS - 1) *
+                                input_set_abs_params(dev->input, ABS_X, 0,
+                                                     (ATP_XSENSORS - 1) *
                                                      ATP_XFACT - 1,
                                                      ATP_FUZZ, 0);
                                 break;
@@ -260,12 +261,12 @@ static void atp_complete(struct urb* urb, struct pt_regs* regs)
                                        "Xz: %3d Yz: %3d\n",
                                        x, y, x_z, y_z);
 
-                        input_report_key(&dev->input, BTN_TOUCH, 1);
-                        input_report_abs(&dev->input, ABS_X, x);
-                        input_report_abs(&dev->input, ABS_Y, y);
-                        input_report_abs(&dev->input, ABS_PRESSURE,
+                        input_report_key(dev->input, BTN_TOUCH, 1);
+                        input_report_abs(dev->input, ABS_X, x);
+                        input_report_abs(dev->input, ABS_Y, y);
+                        input_report_abs(dev->input, ABS_PRESSURE,
                                          min(ATP_PRESSURE, x_z + y_z));
-                        atp_report_fingers(&dev->input, max(x_f, y_f));
+                        atp_report_fingers(dev->input, max(x_f, y_f));
                 }
                 dev->x_old = x;
                 dev->y_old = y;
@@ -273,17 +274,17 @@ static void atp_complete(struct urb* urb, struct pt_regs* regs)
         else if (!x && !y) {
 
                 dev->x_old = dev->y_old = -1;
-                input_report_key(&dev->input, BTN_TOUCH, 0);
-                input_report_abs(&dev->input, ABS_PRESSURE, 0);
-                atp_report_fingers(&dev->input, 0);
+                input_report_key(dev->input, BTN_TOUCH, 0);
+                input_report_abs(dev->input, ABS_PRESSURE, 0);
+                atp_report_fingers(dev->input, 0);
 
                 /* reset the accumulator on release */
                 memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
         }
 
-        input_report_key(&dev->input, BTN_LEFT, !!dev->data[80]);
+        input_report_key(dev->input, BTN_LEFT, !!dev->data[80]);
 
-        input_sync(&dev->input);
+        input_sync(dev->input);
 
 exit:
         retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
@@ -314,21 +315,14 @@ static void atp_close(struct input_dev *input)
 
 static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id)
 {
-        struct atp *dev = NULL;
+        struct atp *dev;
+        struct input_dev *input_dev;
+        struct usb_device *udev = interface_to_usbdev(iface);
         struct usb_host_interface *iface_desc;
         struct usb_endpoint_descriptor *endpoint;
         int int_in_endpointAddr = 0;
         int i, retval = -ENOMEM;
 
-        /* allocate memory for our device state and initialize it */
-        dev = kmalloc(sizeof(struct atp), GFP_KERNEL);
-        if (dev == NULL) {
-                err("Out of memory");
-                goto err_kmalloc;
-        }
-        memset(dev, 0, sizeof(struct atp));
-
-        dev->udev = interface_to_usbdev(iface);
 
         /* set up the endpoint information */
         /* use only the first interrupt-in endpoint */
@@ -345,70 +339,82 @@ static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id
                 }
         }
         if (!int_in_endpointAddr) {
-                retval = -EIO;
                 err("Could not find int-in endpoint");
-                goto err_endpoint;
+                return -EIO;
         }
 
-        /* save our data pointer in this interface device */
-        usb_set_intfdata(iface, dev);
+        /* allocate memory for our device state and initialize it */
+        dev = kzalloc(sizeof(struct atp), GFP_KERNEL);
+        input_dev = input_allocate_device();
+        if (!dev || !input_dev) {
+                err("Out of memory");
+                goto err_free_devs;
+        }
+
+        dev->udev = udev;
+        dev->input = input_dev;
 
         dev->urb = usb_alloc_urb(0, GFP_KERNEL);
         if (!dev->urb) {
                 retval = -ENOMEM;
-                goto err_usballoc;
+                goto err_free_devs;
         }
+
         dev->data = usb_buffer_alloc(dev->udev, ATP_DATASIZE, GFP_KERNEL,
                                      &dev->urb->transfer_dma);
         if (!dev->data) {
                 retval = -ENOMEM;
-                goto err_usbbufalloc;
+                goto err_free_urb;
         }
-        usb_fill_int_urb(dev->urb, dev->udev,
-                         usb_rcvintpipe(dev->udev, int_in_endpointAddr),
+
+        usb_fill_int_urb(dev->urb, udev,
+                         usb_rcvintpipe(udev, int_in_endpointAddr),
                          dev->data, ATP_DATASIZE, atp_complete, dev, 1);
 
-        init_input_dev(&dev->input);
-        dev->input.name = "appletouch";
-        dev->input.dev = &iface->dev;
-        dev->input.private = dev;
-        dev->input.open = atp_open;
-        dev->input.close = atp_close;
+        usb_make_path(udev, dev->phys, sizeof(dev->phys));
+        strlcat(dev->phys, "/input0", sizeof(dev->phys));
+
+        input_dev->name = "appletouch";
+        input_dev->phys = dev->phys;
+        usb_to_input_id(dev->udev, &input_dev->id);
+        input_dev->cdev.dev = &iface->dev;
 
-        usb_to_input_id(dev->udev, &dev->input.id);
+        input_dev->private = dev;
+        input_dev->open = atp_open;
+        input_dev->close = atp_close;
 
-        set_bit(EV_ABS, dev->input.evbit);
+        set_bit(EV_ABS, input_dev->evbit);
 
         /*
          * 12" and 15" Powerbooks only have 16 x sensors,
          * 17" models are detected later.
          */
-        input_set_abs_params(&dev->input, ABS_X, 0,
+        input_set_abs_params(input_dev, ABS_X, 0,
                              (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0);
-        input_set_abs_params(&dev->input, ABS_Y, 0,
+        input_set_abs_params(input_dev, ABS_Y, 0,
                              (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0);
-        input_set_abs_params(&dev->input, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
+        input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
 
-        set_bit(EV_KEY, dev->input.evbit);
-        set_bit(BTN_TOUCH, dev->input.keybit);
-        set_bit(BTN_TOOL_FINGER, dev->input.keybit);
-        set_bit(BTN_TOOL_DOUBLETAP, dev->input.keybit);
-        set_bit(BTN_TOOL_TRIPLETAP, dev->input.keybit);
-        set_bit(BTN_LEFT, dev->input.keybit);
+        set_bit(EV_KEY, input_dev->evbit);
+        set_bit(BTN_TOUCH, input_dev->keybit);
+        set_bit(BTN_TOOL_FINGER, input_dev->keybit);
+        set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
+        set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
+        set_bit(BTN_LEFT, input_dev->keybit);
 
-        input_register_device(&dev->input);
+        input_register_device(dev->input);
 
-        printk(KERN_INFO "input: appletouch connected\n");
+        /* save our data pointer in this interface device */
+        usb_set_intfdata(iface, dev);
 
         return 0;
 
-err_usbbufalloc:
+ err_free_urb:
         usb_free_urb(dev->urb);
-err_usballoc:
+ err_free_devs:
         usb_set_intfdata(iface, NULL);
-err_endpoint:
         kfree(dev);
-err_kmalloc:
+        input_free_device(input_dev);
         return retval;
 }
 
@@ -419,7 +425,7 @@ static void atp_disconnect(struct usb_interface *iface)
         usb_set_intfdata(iface, NULL);
         if (dev) {
                 usb_kill_urb(dev->urb);
-                input_unregister_device(&dev->input);
+                input_unregister_device(dev->input);
                 usb_free_urb(dev->urb);
                 usb_buffer_free(dev->udev, ATP_DATASIZE,
                                 dev->data, dev->urb->transfer_dma);