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path: root/drivers/usb/misc/phidgetkit.c
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Diffstat (limited to 'drivers/usb/misc/phidgetkit.c')
-rw-r--r--drivers/usb/misc/phidgetkit.c586
1 files changed, 586 insertions, 0 deletions
diff --git a/drivers/usb/misc/phidgetkit.c b/drivers/usb/misc/phidgetkit.c
new file mode 100644
index 000000000000..ddbf8e992368
--- /dev/null
+++ b/drivers/usb/misc/phidgetkit.c
@@ -0,0 +1,586 @@
+/*
+ * USB PhidgetInterfaceKit driver 1.0
+ *
+ * Copyright (C) 2004 Sean Young <sean@mess.org>
+ * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ * 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 is a driver for the USB PhidgetInterfaceKit.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#define DRIVER_AUTHOR "Sean Young <sean@mess.org>"
+#define DRIVER_DESC "USB PhidgetInterfaceKit Driver"
+
+#define USB_VENDOR_ID_GLAB 0x06c2
+#define USB_DEVICE_ID_INTERFACEKIT004 0x0040
+#define USB_DEVICE_ID_INTERFACEKIT888 0x0045
+#define USB_DEVICE_ID_INTERFACEKIT047 0x0051
+#define USB_DEVICE_ID_INTERFACEKIT088 0x0053
+
+#define USB_VENDOR_ID_WISEGROUP 0x0925
+#define USB_DEVICE_ID_INTERFACEKIT884 0x8201
+
+#define MAX_INTERFACES 8
+
+struct driver_interfacekit {
+ int sensors;
+ int inputs;
+ int outputs;
+ int has_lcd;
+};
+#define ifkit(_sensors, _inputs, _outputs, _lcd) \
+static struct driver_interfacekit ph_##_sensors##_inputs##_outputs = { \
+ .sensors = _sensors, \
+ .inputs = _inputs, \
+ .outputs = _outputs, \
+ .has_lcd = _lcd, \
+};
+ifkit(0, 0, 4, 0);
+ifkit(8, 8, 8, 0);
+ifkit(0, 4, 7, 1);
+ifkit(8, 8, 4, 0);
+ifkit(0, 8, 8, 1);
+
+struct phidget_interfacekit {
+ struct usb_device *udev;
+ struct usb_interface *intf;
+ struct driver_interfacekit *ifkit;
+ int outputs[MAX_INTERFACES];
+ int inputs[MAX_INTERFACES];
+ int sensors[MAX_INTERFACES];
+ u8 lcd_files_on;
+
+ struct urb *irq;
+ unsigned char *data;
+ dma_addr_t data_dma;
+};
+
+static struct usb_device_id id_table[] = {
+ {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT004),
+ .driver_info = (kernel_ulong_t)&ph_004},
+ {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT888),
+ .driver_info = (kernel_ulong_t)&ph_888},
+ {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT047),
+ .driver_info = (kernel_ulong_t)&ph_047},
+ {USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_INTERFACEKIT088),
+ .driver_info = (kernel_ulong_t)&ph_088},
+ {USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_INTERFACEKIT884),
+ .driver_info = (kernel_ulong_t)&ph_884},
+ {}
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static int change_outputs(struct phidget_interfacekit *kit, int output_num, int enable)
+{
+ unsigned char *buffer;
+ int retval;
+ int n;
+
+ buffer = kmalloc(4, GFP_KERNEL);
+ if (!buffer) {
+ dev_err(&kit->udev->dev, "%s - out of memory\n",
+ __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ kit->outputs[output_num] = enable;
+ memset(buffer, 0, 4);
+ for (n=0; n<8; n++) {
+ if (kit->outputs[n]) {
+ buffer[0] |= 1 << n;
+ }
+ }
+
+ dev_dbg(&kit->udev->dev, "sending data: %02x\n", buffer[0]);
+
+ retval = usb_control_msg(kit->udev,
+ usb_sndctrlpipe(kit->udev, 0),
+ 0x09, 0x21, 0x0200, 0x0000, buffer, 4, 2000);
+
+ if (retval != 4)
+ dev_err(&kit->udev->dev, "usb_control_msg returned %d\n",
+ retval);
+ kfree(buffer);
+
+ return retval < 0 ? retval : 0;
+}
+
+static int change_string(struct phidget_interfacekit *kit, const char *display, unsigned char row)
+{
+ unsigned char *buffer;
+ unsigned char *form_buffer;
+ int retval = -ENOMEM;
+ int i,j, len, buf_ptr;
+
+ buffer = kmalloc(8, GFP_KERNEL);
+ form_buffer = kmalloc(30, GFP_KERNEL);
+ if ((!buffer) || (!form_buffer)) {
+ dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
+ goto exit;
+ }
+
+ len = strlen(display);
+ if (len > 20)
+ len = 20;
+
+ dev_dbg(&kit->udev->dev, "Setting LCD line %d to %s\n", row, display);
+
+ form_buffer[0] = row * 0x40 + 0x80;
+ form_buffer[1] = 0x02;
+ buf_ptr = 2;
+ for (i = 0; i<len; i++)
+ form_buffer[buf_ptr++] = display[i];
+
+ for (i = 0; i < (20 - len); i++)
+ form_buffer[buf_ptr++] = 0x20;
+ form_buffer[buf_ptr++] = 0x01;
+ form_buffer[buf_ptr++] = row * 0x40 + 0x80 + strlen(display);
+
+ for (i = 0; i < buf_ptr; i += 7) {
+ if ((buf_ptr - i) > 7)
+ len = 7;
+ else
+ len = (buf_ptr - i);
+ for (j = 0; j < len; j++)
+ buffer[j] = form_buffer[i + j];
+ buffer[7] = len;
+
+ retval = usb_control_msg(kit->udev,
+ usb_sndctrlpipe(kit->udev, 0),
+ 0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
+ if (retval < 0)
+ goto exit;
+ }
+
+ retval = 0;
+exit:
+ kfree(buffer);
+ kfree(form_buffer);
+
+ return retval;
+}
+
+#define set_lcd_line(number) \
+static ssize_t lcd_line_##number(struct device *dev, const char *buf, size_t count) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
+ change_string(kit, buf, number - 1); \
+ return count; \
+} \
+static DEVICE_ATTR(lcd_line_##number, S_IWUGO, NULL, lcd_line_##number);
+set_lcd_line(1);
+set_lcd_line(2);
+
+static ssize_t set_backlight(struct device *dev, const char *buf, size_t count)
+{
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf);
+ int enabled;
+ unsigned char *buffer;
+ int retval = -ENOMEM;
+
+ buffer = kmalloc(8, GFP_KERNEL);
+ if (!buffer) {
+ dev_err(&kit->udev->dev, "%s - out of memory\n", __FUNCTION__);
+ goto exit;
+ }
+
+ if (sscanf(buf, "%d", &enabled) < 1) {
+ retval = -EINVAL;
+ goto exit;
+ }
+ memset(buffer, 0x00, 8);
+ if (enabled)
+ buffer[0] = 0x01;
+ buffer[7] = 0x11;
+
+ dev_dbg(&kit->udev->dev, "Setting backlight to %s\n", enabled ? "on" : "off");
+
+ retval = usb_control_msg(kit->udev,
+ usb_sndctrlpipe(kit->udev, 0),
+ 0x09, 0x21, 0x0200, 0x0000, buffer, 8, 2000);
+ if (retval < 0)
+ goto exit;
+
+ retval = count;
+exit:
+ kfree(buffer);
+ return retval;
+}
+static DEVICE_ATTR(backlight, S_IWUGO, NULL, set_backlight);
+
+static void remove_lcd_files(struct phidget_interfacekit *kit)
+{
+ if (kit->lcd_files_on) {
+ dev_dbg(&kit->udev->dev, "Removing lcd files\n");
+ device_remove_file(&kit->intf->dev, &dev_attr_lcd_line_1);
+ device_remove_file(&kit->intf->dev, &dev_attr_lcd_line_2);
+ device_remove_file(&kit->intf->dev, &dev_attr_backlight);
+ }
+}
+
+static ssize_t enable_lcd_files(struct device *dev, const char *buf, size_t count)
+{
+ struct usb_interface *intf = to_usb_interface(dev);
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf);
+ int enable;
+
+ if (kit->ifkit->has_lcd == 0)
+ return -ENODEV;
+
+ if (sscanf(buf, "%d", &enable) < 1)
+ return -EINVAL;
+
+ if (enable) {
+ if (!kit->lcd_files_on) {
+ dev_dbg(&kit->udev->dev, "Adding lcd files\n");
+ device_create_file(&kit->intf->dev, &dev_attr_lcd_line_1);
+ device_create_file(&kit->intf->dev, &dev_attr_lcd_line_2);
+ device_create_file(&kit->intf->dev, &dev_attr_backlight);
+ kit->lcd_files_on = 1;
+ }
+ } else {
+ if (kit->lcd_files_on) {
+ remove_lcd_files(kit);
+ kit->lcd_files_on = 0;
+ }
+ }
+
+ return count;
+}
+static DEVICE_ATTR(lcd, S_IWUGO, NULL, enable_lcd_files);
+
+static void interfacekit_irq(struct urb *urb, struct pt_regs *regs)
+{
+ struct phidget_interfacekit *kit = urb->context;
+ unsigned char *buffer = kit->data;
+ int status;
+ int n;
+
+ switch (urb->status) {
+ case 0: /* success */
+ break;
+ case -ECONNRESET: /* unlink */
+ case -ENOENT:
+ case -ESHUTDOWN:
+ return;
+ /* -EPIPE: should clear the halt */
+ default: /* error */
+ goto resubmit;
+ }
+
+ for (n=0; n<8; n++) {
+ kit->inputs[n] = buffer[1] & (1 << n) ? 1 : 0;
+ }
+
+ if (buffer[0] & 1) {
+ kit->sensors[4] = buffer[2] + (buffer[3] & 0x0f) * 256;
+ kit->sensors[5] = buffer[4] + (buffer[3] & 0xf0) * 16;
+ kit->sensors[6] = buffer[5] + (buffer[6] & 0x0f) * 256;
+ kit->sensors[7] = buffer[7] + (buffer[6] & 0xf0) * 16;
+ } else {
+ kit->sensors[0] = buffer[2] + (buffer[3] & 0x0f) * 256;
+ kit->sensors[1] = buffer[4] + (buffer[3] & 0xf0) * 16;
+ kit->sensors[2] = buffer[5] + (buffer[6] & 0x0f) * 256;
+ kit->sensors[3] = buffer[7] + (buffer[6] & 0xf0) * 16;
+ }
+
+resubmit:
+ status = usb_submit_urb(urb, SLAB_ATOMIC);
+ if (status)
+ err("can't resubmit intr, %s-%s/interfacekit0, status %d",
+ kit->udev->bus->bus_name,
+ kit->udev->devpath, status);
+}
+
+#define show_set_output(value) \
+static ssize_t set_output##value(struct device *dev, const char *buf, \
+ size_t count) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
+ int enabled; \
+ int retval; \
+ \
+ if (sscanf(buf, "%d", &enabled) < 1) { \
+ return -EINVAL; \
+ } \
+ \
+ retval = change_outputs(kit, value - 1, enabled ? 1 : 0); \
+ \
+ return retval ? retval : count; \
+} \
+ \
+static ssize_t show_output##value(struct device *dev, char *buf) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
+ \
+ return sprintf(buf, "%d\n", kit->outputs[value - 1]); \
+} \
+static DEVICE_ATTR(output##value, S_IWUGO | S_IRUGO, \
+ show_output##value, set_output##value);
+show_set_output(1);
+show_set_output(2);
+show_set_output(3);
+show_set_output(4);
+show_set_output(5);
+show_set_output(6);
+show_set_output(7);
+show_set_output(8); /* should be MAX_INTERFACES - 1 */
+
+#define show_input(value) \
+static ssize_t show_input##value(struct device *dev, char *buf) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
+ \
+ return sprintf(buf, "%d\n", kit->inputs[value - 1]); \
+} \
+static DEVICE_ATTR(input##value, S_IRUGO, show_input##value, NULL);
+
+show_input(1);
+show_input(2);
+show_input(3);
+show_input(4);
+show_input(5);
+show_input(6);
+show_input(7);
+show_input(8); /* should be MAX_INTERFACES - 1 */
+
+#define show_sensor(value) \
+static ssize_t show_sensor##value(struct device *dev, char *buf) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct phidget_interfacekit *kit = usb_get_intfdata(intf); \
+ \
+ return sprintf(buf, "%d\n", kit->sensors[value - 1]); \
+} \
+static DEVICE_ATTR(sensor##value, S_IRUGO, show_sensor##value, NULL);
+
+show_sensor(1);
+show_sensor(2);
+show_sensor(3);
+show_sensor(4);
+show_sensor(5);
+show_sensor(6);
+show_sensor(7);
+show_sensor(8); /* should be MAX_INTERFACES - 1 */
+
+static int interfacekit_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *endpoint;
+ struct phidget_interfacekit *kit;
+ struct driver_interfacekit *ifkit;
+ int pipe, maxp;
+
+ ifkit = (struct driver_interfacekit *)id->driver_info;
+ if (!ifkit)
+ return -ENODEV;
+
+ interface = intf->cur_altsetting;
+ if (interface->desc.bNumEndpoints != 1)
+ return -ENODEV;
+
+ endpoint = &interface->endpoint[0].desc;
+ if (!(endpoint->bEndpointAddress & 0x80))
+ return -ENODEV;
+ /*
+ * bmAttributes
+ */
+ pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+
+ kit = kmalloc(sizeof(*kit), GFP_KERNEL);
+ if (kit == NULL) {
+ dev_err(&intf->dev, "%s - out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ memset(kit, 0, sizeof(*kit));
+ kit->ifkit = ifkit;
+
+ kit->data = usb_buffer_alloc(dev, 8, SLAB_ATOMIC, &kit->data_dma);
+ if (!kit->data) {
+ kfree(kit);
+ return -ENOMEM;
+ }
+
+ kit->irq = usb_alloc_urb(0, GFP_KERNEL);
+ if (!kit->irq) {
+ usb_buffer_free(dev, 8, kit->data, kit->data_dma);
+ kfree(kit);
+ return -ENOMEM;
+ }
+
+ kit->udev = usb_get_dev(dev);
+ kit->intf = intf;
+ usb_fill_int_urb(kit->irq, kit->udev, pipe, kit->data,
+ (maxp > 8 ? 8 : maxp),
+ interfacekit_irq, kit, endpoint->bInterval);
+ kit->irq->transfer_dma = kit->data_dma;
+ kit->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ usb_set_intfdata(intf, kit);
+
+ if (usb_submit_urb(kit->irq, GFP_KERNEL)) {
+ return -EIO;
+ }
+
+ if (ifkit->outputs >= 4) {
+ device_create_file(&intf->dev, &dev_attr_output1);
+ device_create_file(&intf->dev, &dev_attr_output2);
+ device_create_file(&intf->dev, &dev_attr_output3);
+ device_create_file(&intf->dev, &dev_attr_output4);
+ }
+ if (ifkit->outputs == 8) {
+ device_create_file(&intf->dev, &dev_attr_output5);
+ device_create_file(&intf->dev, &dev_attr_output6);
+ device_create_file(&intf->dev, &dev_attr_output7);
+ device_create_file(&intf->dev, &dev_attr_output8);
+ }
+
+ if (ifkit->inputs >= 4) {
+ device_create_file(&intf->dev, &dev_attr_input1);
+ device_create_file(&intf->dev, &dev_attr_input2);
+ device_create_file(&intf->dev, &dev_attr_input3);
+ device_create_file(&intf->dev, &dev_attr_input4);
+ }
+ if (ifkit->inputs == 8) {
+ device_create_file(&intf->dev, &dev_attr_input5);
+ device_create_file(&intf->dev, &dev_attr_input6);
+ device_create_file(&intf->dev, &dev_attr_input7);
+ device_create_file(&intf->dev, &dev_attr_input8);
+ }
+
+ if (ifkit->sensors >= 4) {
+ device_create_file(&intf->dev, &dev_attr_sensor1);
+ device_create_file(&intf->dev, &dev_attr_sensor2);
+ device_create_file(&intf->dev, &dev_attr_sensor3);
+ device_create_file(&intf->dev, &dev_attr_sensor4);
+ }
+ if (ifkit->sensors >= 7) {
+ device_create_file(&intf->dev, &dev_attr_sensor5);
+ device_create_file(&intf->dev, &dev_attr_sensor6);
+ device_create_file(&intf->dev, &dev_attr_sensor7);
+ }
+ if (ifkit->sensors == 8) {
+ device_create_file(&intf->dev, &dev_attr_sensor8);
+ }
+
+ if (ifkit->has_lcd)
+ device_create_file(&intf->dev, &dev_attr_lcd);
+
+ dev_info(&intf->dev, "USB PhidgetInterfaceKit %d/%d/%d attached\n",
+ ifkit->sensors, ifkit->inputs, ifkit->outputs);
+
+ return 0;
+}
+
+static void interfacekit_disconnect(struct usb_interface *interface)
+{
+ struct phidget_interfacekit *kit;
+
+ kit = usb_get_intfdata(interface);
+ usb_set_intfdata(interface, NULL);
+ if (!kit)
+ return;
+
+ if (kit->ifkit->outputs >= 4) {
+ device_remove_file(&interface->dev, &dev_attr_output1);
+ device_remove_file(&interface->dev, &dev_attr_output2);
+ device_remove_file(&interface->dev, &dev_attr_output3);
+ device_remove_file(&interface->dev, &dev_attr_output4);
+ }
+ if (kit->ifkit->outputs == 8) {
+ device_remove_file(&interface->dev, &dev_attr_output5);
+ device_remove_file(&interface->dev, &dev_attr_output6);
+ device_remove_file(&interface->dev, &dev_attr_output7);
+ device_remove_file(&interface->dev, &dev_attr_output8);
+ }
+
+ if (kit->ifkit->inputs >= 4) {
+ device_remove_file(&interface->dev, &dev_attr_input1);
+ device_remove_file(&interface->dev, &dev_attr_input2);
+ device_remove_file(&interface->dev, &dev_attr_input3);
+ device_remove_file(&interface->dev, &dev_attr_input4);
+ }
+ if (kit->ifkit->inputs == 8) {
+ device_remove_file(&interface->dev, &dev_attr_input5);
+ device_remove_file(&interface->dev, &dev_attr_input6);
+ device_remove_file(&interface->dev, &dev_attr_input7);
+ device_remove_file(&interface->dev, &dev_attr_input8);
+ }
+
+ if (kit->ifkit->sensors >= 4) {
+ device_remove_file(&interface->dev, &dev_attr_sensor1);
+ device_remove_file(&interface->dev, &dev_attr_sensor2);
+ device_remove_file(&interface->dev, &dev_attr_sensor3);
+ device_remove_file(&interface->dev, &dev_attr_sensor4);
+ }
+ if (kit->ifkit->sensors >= 7) {
+ device_remove_file(&interface->dev, &dev_attr_sensor5);
+ device_remove_file(&interface->dev, &dev_attr_sensor6);
+ device_remove_file(&interface->dev, &dev_attr_sensor7);
+ }
+ if (kit->ifkit->sensors == 8) {
+ device_remove_file(&interface->dev, &dev_attr_sensor8);
+ }
+ if (kit->ifkit->has_lcd)
+ device_remove_file(&interface->dev, &dev_attr_lcd);
+
+ dev_info(&interface->dev, "USB PhidgetInterfaceKit %d/%d/%d detached\n",
+ kit->ifkit->sensors, kit->ifkit->inputs, kit->ifkit->outputs);
+
+ usb_kill_urb(kit->irq);
+ usb_free_urb(kit->irq);
+ usb_buffer_free(kit->udev, 8, kit->data, kit->data_dma);
+
+ usb_put_dev(kit->udev);
+ kfree(kit);
+}
+
+static struct usb_driver interfacekit_driver = {
+ .owner = THIS_MODULE,
+ .name = "phidgetkit",
+ .probe = interfacekit_probe,
+ .disconnect = interfacekit_disconnect,
+ .id_table = id_table
+};
+
+static int __init interfacekit_init(void)
+{
+ int retval = 0;
+
+ retval = usb_register(&interfacekit_driver);
+ if (retval)
+ err("usb_register failed. Error number %d", retval);
+
+ return retval;
+}
+
+static void __exit interfacekit_exit(void)
+{
+ usb_deregister(&interfacekit_driver);
+}
+
+module_init(interfacekit_init);
+module_exit(interfacekit_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 11:53:04 +0100