--- /dev/null
+/*
+ * ati_remote2 - ATI/Philips USB RF remote driver
+ *
+ * Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/usb_input.h>
+
+#define DRIVER_DESC "ATI/Philips USB RF remote driver"
+#define DRIVER_VERSION "0.1"
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
+MODULE_LICENSE("GPL");
+
+static unsigned int mode_mask = 0x1F;
+module_param(mode_mask, uint, 0644);
+MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
+
+static struct usb_device_id ati_remote2_id_table[] = {
+ { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */
+ { }
+};
+MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
+
+static struct {
+ int hw_code;
+ int key_code;
+} ati_remote2_key_table[] = {
+ { 0x00, KEY_0 },
+ { 0x01, KEY_1 },
+ { 0x02, KEY_2 },
+ { 0x03, KEY_3 },
+ { 0x04, KEY_4 },
+ { 0x05, KEY_5 },
+ { 0x06, KEY_6 },
+ { 0x07, KEY_7 },
+ { 0x08, KEY_8 },
+ { 0x09, KEY_9 },
+ { 0x0c, KEY_POWER },
+ { 0x0d, KEY_MUTE },
+ { 0x10, KEY_VOLUMEUP },
+ { 0x11, KEY_VOLUMEDOWN },
+ { 0x20, KEY_CHANNELUP },
+ { 0x21, KEY_CHANNELDOWN },
+ { 0x28, KEY_FORWARD },
+ { 0x29, KEY_REWIND },
+ { 0x2c, KEY_PLAY },
+ { 0x30, KEY_PAUSE },
+ { 0x31, KEY_STOP },
+ { 0x37, KEY_RECORD },
+ { 0x38, KEY_DVD },
+ { 0x39, KEY_TV },
+ { 0x54, KEY_MENU },
+ { 0x58, KEY_UP },
+ { 0x59, KEY_DOWN },
+ { 0x5a, KEY_LEFT },
+ { 0x5b, KEY_RIGHT },
+ { 0x5c, KEY_OK },
+ { 0x78, KEY_A },
+ { 0x79, KEY_B },
+ { 0x7a, KEY_C },
+ { 0x7b, KEY_D },
+ { 0x7c, KEY_E },
+ { 0x7d, KEY_F },
+ { 0x82, KEY_ENTER },
+ { 0x8e, KEY_VENDOR },
+ { 0x96, KEY_COFFEE },
+ { 0xa9, BTN_LEFT },
+ { 0xaa, BTN_RIGHT },
+ { 0xbe, KEY_QUESTION },
+ { 0xd5, KEY_FRONT },
+ { 0xd0, KEY_EDIT },
+ { 0xf9, KEY_INFO },
+ { (0x00 << 8) | 0x3f, KEY_PROG1 },
+ { (0x01 << 8) | 0x3f, KEY_PROG2 },
+ { (0x02 << 8) | 0x3f, KEY_PROG3 },
+ { (0x03 << 8) | 0x3f, KEY_PROG4 },
+ { (0x04 << 8) | 0x3f, KEY_PC },
+ { 0, KEY_RESERVED }
+};
+
+struct ati_remote2 {
+ struct input_dev *idev;
+ struct usb_device *udev;
+
+ struct usb_interface *intf[2];
+ struct usb_endpoint_descriptor *ep[2];
+ struct urb *urb[2];
+ void *buf[2];
+ dma_addr_t buf_dma[2];
+
+ unsigned long jiffies;
+ int mode;
+
+ char name[64];
+ char phys[64];
+};
+
+static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
+static void ati_remote2_disconnect(struct usb_interface *interface);
+
+static struct usb_driver ati_remote2_driver = {
+ .name = "ati_remote2",
+ .probe = ati_remote2_probe,
+ .disconnect = ati_remote2_disconnect,
+ .id_table = ati_remote2_id_table,
+};
+
+static int ati_remote2_open(struct input_dev *idev)
+{
+ struct ati_remote2 *ar2 = idev->private;
+ int r;
+
+ r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
+ if (r) {
+ dev_err(&ar2->intf[0]->dev,
+ "%s: usb_submit_urb() = %d\n", __FUNCTION__, r);
+ return r;
+ }
+ r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
+ if (r) {
+ usb_kill_urb(ar2->urb[0]);
+ dev_err(&ar2->intf[1]->dev,
+ "%s: usb_submit_urb() = %d\n", __FUNCTION__, r);
+ return r;
+ }
+
+ return 0;
+}
+
+static void ati_remote2_close(struct input_dev *idev)
+{
+ struct ati_remote2 *ar2 = idev->private;
+
+ usb_kill_urb(ar2->urb[0]);
+ usb_kill_urb(ar2->urb[1]);
+}
+
+static void ati_remote2_input_mouse(struct ati_remote2 *ar2, struct pt_regs *regs)
+{
+ struct input_dev *idev = ar2->idev;
+ u8 *data = ar2->buf[0];
+
+ if (data[0] > 4) {
+ dev_err(&ar2->intf[0]->dev,
+ "Unknown mode byte (%02x %02x %02x %02x)\n",
+ data[3], data[2], data[1], data[0]);
+ return;
+ }
+
+ if (!((1 << data[0]) & mode_mask))
+ return;
+
+ input_regs(idev, regs);
+ input_event(idev, EV_REL, REL_X, (s8) data[1]);
+ input_event(idev, EV_REL, REL_Y, (s8) data[2]);
+ input_sync(idev);
+}
+
+static int ati_remote2_lookup(unsigned int hw_code)
+{
+ int i;
+
+ for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
+ if (ati_remote2_key_table[i].hw_code == hw_code)
+ return i;
+
+ return -1;
+}
+
+static void ati_remote2_input_key(struct ati_remote2 *ar2, struct pt_regs *regs)
+{
+ struct input_dev *idev = ar2->idev;
+ u8 *data = ar2->buf[1];
+ int hw_code, index;
+
+ if (data[0] > 4) {
+ dev_err(&ar2->intf[1]->dev,
+ "Unknown mode byte (%02x %02x %02x %02x)\n",
+ data[3], data[2], data[1], data[0]);
+ return;
+ }
+
+ hw_code = data[2];
+ /*
+ * Mode keys (AUX1-AUX4, PC) all generate the same code byte.
+ * Use the mode byte to figure out which one was pressed.
+ */
+ if (hw_code == 0x3f) {
+ /*
+ * For some incomprehensible reason the mouse pad generates
+ * events which look identical to the events from the last
+ * pressed mode key. Naturally we don't want to generate key
+ * events for the mouse pad so we filter out any subsequent
+ * events from the same mode key.
+ */
+ if (ar2->mode == data[0])
+ return;
+
+ if (data[1] == 0)
+ ar2->mode = data[0];
+
+ hw_code |= data[0] << 8;
+ }
+
+ if (!((1 << data[0]) & mode_mask))
+ return;
+
+ index = ati_remote2_lookup(hw_code);
+ if (index < 0) {
+ dev_err(&ar2->intf[1]->dev,
+ "Unknown code byte (%02x %02x %02x %02x)\n",
+ data[3], data[2], data[1], data[0]);
+ return;
+ }
+
+ switch (data[1]) {
+ case 0: /* release */
+ break;
+ case 1: /* press */
+ ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
+ break;
+ case 2: /* repeat */
+
+ /* No repeat for mouse buttons. */
+ if (ati_remote2_key_table[index].key_code == BTN_LEFT ||
+ ati_remote2_key_table[index].key_code == BTN_RIGHT)
+ return;
+
+ if (!time_after_eq(jiffies, ar2->jiffies))
+ return;
+
+ ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
+ break;
+ default:
+ dev_err(&ar2->intf[1]->dev,
+ "Unknown state byte (%02x %02x %02x %02x)\n",
+ data[3], data[2], data[1], data[0]);
+ return;
+ }
+
+ input_regs(idev, regs);
+ input_event(idev, EV_KEY, ati_remote2_key_table[index].key_code, data[1]);
+ input_sync(idev);
+}
+
+static void ati_remote2_complete_mouse(struct urb *urb, struct pt_regs *regs)
+{
+ struct ati_remote2 *ar2 = urb->context;
+ int r;
+
+ switch (urb->status) {
+ case 0:
+ ati_remote2_input_mouse(ar2, regs);
+ break;
+ case -ENOENT:
+ case -EILSEQ:
+ case -ECONNRESET:
+ case -ESHUTDOWN:
+ dev_dbg(&ar2->intf[0]->dev,
+ "%s(): urb status = %d\n", __FUNCTION__, urb->status);
+ return;
+ default:
+ dev_err(&ar2->intf[0]->dev,
+ "%s(): urb status = %d\n", __FUNCTION__, urb->status);
+ }
+
+ r = usb_submit_urb(urb, GFP_ATOMIC);
+ if (r)
+ dev_err(&ar2->intf[0]->dev,
+ "%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
+}
+
+static void ati_remote2_complete_key(struct urb *urb, struct pt_regs *regs)
+{
+ struct ati_remote2 *ar2 = urb->context;
+ int r;
+
+ switch (urb->status) {
+ case 0:
+ ati_remote2_input_key(ar2, regs);
+ break;
+ case -ENOENT:
+ case -EILSEQ:
+ case -ECONNRESET:
+ case -ESHUTDOWN:
+ dev_dbg(&ar2->intf[1]->dev,
+ "%s(): urb status = %d\n", __FUNCTION__, urb->status);
+ return;
+ default:
+ dev_err(&ar2->intf[1]->dev,
+ "%s(): urb status = %d\n", __FUNCTION__, urb->status);
+ }
+
+ r = usb_submit_urb(urb, GFP_ATOMIC);
+ if (r)
+ dev_err(&ar2->intf[1]->dev,
+ "%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
+}
+
+static int ati_remote2_input_init(struct ati_remote2 *ar2)
+{
+ struct input_dev *idev;
+ int i;
+
+ idev = input_allocate_device();
+ if (!idev)
+ return -ENOMEM;
+
+ ar2->idev = idev;
+ idev->private = ar2;
+
+ idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_REL);
+ idev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
+ idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
+ for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
+ set_bit(ati_remote2_key_table[i].key_code, idev->keybit);
+
+ idev->rep[REP_DELAY] = 250;
+ idev->rep[REP_PERIOD] = 33;
+
+ idev->open = ati_remote2_open;
+ idev->close = ati_remote2_close;
+
+ idev->name = ar2->name;
+ idev->phys = ar2->phys;
+
+ usb_to_input_id(ar2->udev, &idev->id);
+ idev->cdev.dev = &ar2->udev->dev;
+
+ i = input_register_device(idev);
+ if (i)
+ input_free_device(idev);
+
+ return i;
+}
+
+static int ati_remote2_urb_init(struct ati_remote2 *ar2)
+{
+ struct usb_device *udev = ar2->udev;
+ int i, pipe, maxp;
+
+ for (i = 0; i < 2; i++) {
+ ar2->buf[i] = usb_buffer_alloc(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
+ if (!ar2->buf[i])
+ return -ENOMEM;
+
+ ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (!ar2->urb[i])
+ return -ENOMEM;
+
+ pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
+ maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+ maxp = maxp > 4 ? 4 : maxp;
+
+ usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
+ i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
+ ar2, ar2->ep[i]->bInterval);
+ ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
+ ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ }
+
+ return 0;
+}
+
+static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
+{
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ if (ar2->urb[i])
+ usb_free_urb(ar2->urb[i]);
+
+ if (ar2->buf[i])
+ usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
+ }
+}
+
+static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct usb_host_interface *alt = interface->cur_altsetting;
+ struct ati_remote2 *ar2;
+ int r;
+
+ if (alt->desc.bInterfaceNumber)
+ return -ENODEV;
+
+ ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
+ if (!ar2)
+ return -ENOMEM;
+
+ ar2->udev = udev;
+
+ ar2->intf[0] = interface;
+ ar2->ep[0] = &alt->endpoint[0].desc;
+
+ ar2->intf[1] = usb_ifnum_to_if(udev, 1);
+ r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
+ if (r)
+ goto fail1;
+ alt = ar2->intf[1]->cur_altsetting;
+ ar2->ep[1] = &alt->endpoint[0].desc;
+
+ r = ati_remote2_urb_init(ar2);
+ if (r)
+ goto fail2;
+
+ usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
+ strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
+
+ strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
+
+ r = ati_remote2_input_init(ar2);
+ if (r)
+ goto fail2;
+
+ usb_set_intfdata(interface, ar2);
+
+ return 0;
+
+ fail2:
+ ati_remote2_urb_cleanup(ar2);
+
+ usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
+ fail1:
+ kfree(ar2);
+
+ return r;
+}
+
+static void ati_remote2_disconnect(struct usb_interface *interface)
+{
+ struct ati_remote2 *ar2;
+ struct usb_host_interface *alt = interface->cur_altsetting;
+
+ if (alt->desc.bInterfaceNumber)
+ return;
+
+ ar2 = usb_get_intfdata(interface);
+ usb_set_intfdata(interface, NULL);
+
+ input_unregister_device(ar2->idev);
+
+ ati_remote2_urb_cleanup(ar2);
+
+ usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
+
+ kfree(ar2);
+}
+
+static int __init ati_remote2_init(void)
+{
+ int r;
+
+ r = usb_register(&ati_remote2_driver);
+ if (r)
+ printk(KERN_ERR "ati_remote2: usb_register() = %d\n", r);
+ else
+ printk(KERN_INFO "ati_remote2: " DRIVER_DESC " " DRIVER_VERSION "\n");
+
+ return r;
+}
+
+static void __exit ati_remote2_exit(void)
+{
+ usb_deregister(&ati_remote2_driver);
+}
+
+module_init(ati_remote2_init);
+module_exit(ati_remote2_exit);
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff