v4.19.13 snapshot.
diff --git a/drivers/hid/hid-steelseries.c b/drivers/hid/hid-steelseries.c
new file mode 100644
index 0000000..ec18768
--- /dev/null
+++ b/drivers/hid/hid-steelseries.c
@@ -0,0 +1,388 @@
+/*
+ * HID driver for Steelseries SRW-S1
+ *
+ * Copyright (c) 2013 Simon Wood
+ */
+
+/*
+ * 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.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
+ (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
+#define SRWS1_NUMBER_LEDS 15
+struct steelseries_srws1_data {
+ __u16 led_state;
+ /* the last element is used for setting all leds simultaneously */
+ struct led_classdev *led[SRWS1_NUMBER_LEDS + 1];
+};
+#endif
+
+/* Fixed report descriptor for Steelseries SRW-S1 wheel controller
+ *
+ * The original descriptor hides the sensitivity and assists dials
+ * a custom vendor usage page. This inserts a patch to make them
+ * appear in the 'Generic Desktop' usage.
+ */
+
+static __u8 steelseries_srws1_rdesc_fixed[] = {
+0x05, 0x01, /* Usage Page (Desktop) */
+0x09, 0x08, /* Usage (MultiAxis), Changed */
+0xA1, 0x01, /* Collection (Application), */
+0xA1, 0x02, /* Collection (Logical), */
+0x95, 0x01, /* Report Count (1), */
+0x05, 0x01, /* Changed Usage Page (Desktop), */
+0x09, 0x30, /* Changed Usage (X), */
+0x16, 0xF8, 0xF8, /* Logical Minimum (-1800), */
+0x26, 0x08, 0x07, /* Logical Maximum (1800), */
+0x65, 0x14, /* Unit (Degrees), */
+0x55, 0x0F, /* Unit Exponent (15), */
+0x75, 0x10, /* Report Size (16), */
+0x81, 0x02, /* Input (Variable), */
+0x09, 0x31, /* Changed Usage (Y), */
+0x15, 0x00, /* Logical Minimum (0), */
+0x26, 0xFF, 0x03, /* Logical Maximum (1023), */
+0x75, 0x0C, /* Report Size (12), */
+0x81, 0x02, /* Input (Variable), */
+0x09, 0x32, /* Changed Usage (Z), */
+0x15, 0x00, /* Logical Minimum (0), */
+0x26, 0xFF, 0x03, /* Logical Maximum (1023), */
+0x75, 0x0C, /* Report Size (12), */
+0x81, 0x02, /* Input (Variable), */
+0x05, 0x01, /* Usage Page (Desktop), */
+0x09, 0x39, /* Usage (Hat Switch), */
+0x25, 0x07, /* Logical Maximum (7), */
+0x35, 0x00, /* Physical Minimum (0), */
+0x46, 0x3B, 0x01, /* Physical Maximum (315), */
+0x65, 0x14, /* Unit (Degrees), */
+0x75, 0x04, /* Report Size (4), */
+0x95, 0x01, /* Report Count (1), */
+0x81, 0x02, /* Input (Variable), */
+0x25, 0x01, /* Logical Maximum (1), */
+0x45, 0x01, /* Physical Maximum (1), */
+0x65, 0x00, /* Unit, */
+0x75, 0x01, /* Report Size (1), */
+0x95, 0x03, /* Report Count (3), */
+0x81, 0x01, /* Input (Constant), */
+0x05, 0x09, /* Usage Page (Button), */
+0x19, 0x01, /* Usage Minimum (01h), */
+0x29, 0x11, /* Usage Maximum (11h), */
+0x95, 0x11, /* Report Count (17), */
+0x81, 0x02, /* Input (Variable), */
+ /* ---- Dial patch starts here ---- */
+0x05, 0x01, /* Usage Page (Desktop), */
+0x09, 0x33, /* Usage (RX), */
+0x75, 0x04, /* Report Size (4), */
+0x95, 0x02, /* Report Count (2), */
+0x15, 0x00, /* Logical Minimum (0), */
+0x25, 0x0b, /* Logical Maximum (b), */
+0x81, 0x02, /* Input (Variable), */
+0x09, 0x35, /* Usage (RZ), */
+0x75, 0x04, /* Report Size (4), */
+0x95, 0x01, /* Report Count (1), */
+0x25, 0x03, /* Logical Maximum (3), */
+0x81, 0x02, /* Input (Variable), */
+ /* ---- Dial patch ends here ---- */
+0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
+0x09, 0x01, /* Usage (01h), */
+0x75, 0x04, /* Changed Report Size (4), */
+0x95, 0x0D, /* Changed Report Count (13), */
+0x81, 0x02, /* Input (Variable), */
+0xC0, /* End Collection, */
+0xA1, 0x02, /* Collection (Logical), */
+0x09, 0x02, /* Usage (02h), */
+0x75, 0x08, /* Report Size (8), */
+0x95, 0x10, /* Report Count (16), */
+0x91, 0x02, /* Output (Variable), */
+0xC0, /* End Collection, */
+0xC0 /* End Collection */
+};
+
+#if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
+ (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
+static void steelseries_srws1_set_leds(struct hid_device *hdev, __u16 leds)
+{
+ struct list_head *report_list = &hdev->report_enum[HID_OUTPUT_REPORT].report_list;
+ struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
+ __s32 *value = report->field[0]->value;
+
+ value[0] = 0x40;
+ value[1] = leds & 0xFF;
+ value[2] = leds >> 8;
+ value[3] = 0x00;
+ value[4] = 0x00;
+ value[5] = 0x00;
+ value[6] = 0x00;
+ value[7] = 0x00;
+ value[8] = 0x00;
+ value[9] = 0x00;
+ value[10] = 0x00;
+ value[11] = 0x00;
+ value[12] = 0x00;
+ value[13] = 0x00;
+ value[14] = 0x00;
+ value[15] = 0x00;
+
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+
+ /* Note: LED change does not show on device until the device is read/polled */
+}
+
+static void steelseries_srws1_led_all_set_brightness(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hid = to_hid_device(dev);
+ struct steelseries_srws1_data *drv_data = hid_get_drvdata(hid);
+
+ if (!drv_data) {
+ hid_err(hid, "Device data not found.");
+ return;
+ }
+
+ if (value == LED_OFF)
+ drv_data->led_state = 0;
+ else
+ drv_data->led_state = (1 << (SRWS1_NUMBER_LEDS + 1)) - 1;
+
+ steelseries_srws1_set_leds(hid, drv_data->led_state);
+}
+
+static enum led_brightness steelseries_srws1_led_all_get_brightness(struct led_classdev *led_cdev)
+{
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hid = to_hid_device(dev);
+ struct steelseries_srws1_data *drv_data;
+
+ drv_data = hid_get_drvdata(hid);
+
+ if (!drv_data) {
+ hid_err(hid, "Device data not found.");
+ return LED_OFF;
+ }
+
+ return (drv_data->led_state >> SRWS1_NUMBER_LEDS) ? LED_FULL : LED_OFF;
+}
+
+static void steelseries_srws1_led_set_brightness(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hid = to_hid_device(dev);
+ struct steelseries_srws1_data *drv_data = hid_get_drvdata(hid);
+ int i, state = 0;
+
+ if (!drv_data) {
+ hid_err(hid, "Device data not found.");
+ return;
+ }
+
+ for (i = 0; i < SRWS1_NUMBER_LEDS; i++) {
+ if (led_cdev != drv_data->led[i])
+ continue;
+
+ state = (drv_data->led_state >> i) & 1;
+ if (value == LED_OFF && state) {
+ drv_data->led_state &= ~(1 << i);
+ steelseries_srws1_set_leds(hid, drv_data->led_state);
+ } else if (value != LED_OFF && !state) {
+ drv_data->led_state |= 1 << i;
+ steelseries_srws1_set_leds(hid, drv_data->led_state);
+ }
+ break;
+ }
+}
+
+static enum led_brightness steelseries_srws1_led_get_brightness(struct led_classdev *led_cdev)
+{
+ struct device *dev = led_cdev->dev->parent;
+ struct hid_device *hid = to_hid_device(dev);
+ struct steelseries_srws1_data *drv_data;
+ int i, value = 0;
+
+ drv_data = hid_get_drvdata(hid);
+
+ if (!drv_data) {
+ hid_err(hid, "Device data not found.");
+ return LED_OFF;
+ }
+
+ for (i = 0; i < SRWS1_NUMBER_LEDS; i++)
+ if (led_cdev == drv_data->led[i]) {
+ value = (drv_data->led_state >> i) & 1;
+ break;
+ }
+
+ return value ? LED_FULL : LED_OFF;
+}
+
+static int steelseries_srws1_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int ret, i;
+ struct led_classdev *led;
+ size_t name_sz;
+ char *name;
+
+ struct steelseries_srws1_data *drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
+
+ if (drv_data == NULL) {
+ hid_err(hdev, "can't alloc SRW-S1 memory\n");
+ return -ENOMEM;
+ }
+
+ hid_set_drvdata(hdev, drv_data);
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "parse failed\n");
+ goto err_free;
+ }
+
+ if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 16)) {
+ ret = -ENODEV;
+ goto err_free;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+ if (ret) {
+ hid_err(hdev, "hw start failed\n");
+ goto err_free;
+ }
+
+ /* register led subsystem */
+ drv_data->led_state = 0;
+ for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++)
+ drv_data->led[i] = NULL;
+
+ steelseries_srws1_set_leds(hdev, 0);
+
+ name_sz = strlen(hdev->uniq) + 16;
+
+ /* 'ALL', for setting all LEDs simultaneously */
+ led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
+ if (!led) {
+ hid_err(hdev, "can't allocate memory for LED ALL\n");
+ goto err_led;
+ }
+
+ name = (void *)(&led[1]);
+ snprintf(name, name_sz, "SRWS1::%s::RPMALL", hdev->uniq);
+ led->name = name;
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->brightness_get = steelseries_srws1_led_all_get_brightness;
+ led->brightness_set = steelseries_srws1_led_all_set_brightness;
+
+ drv_data->led[SRWS1_NUMBER_LEDS] = led;
+ ret = led_classdev_register(&hdev->dev, led);
+ if (ret)
+ goto err_led;
+
+ /* Each individual LED */
+ for (i = 0; i < SRWS1_NUMBER_LEDS; i++) {
+ led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
+ if (!led) {
+ hid_err(hdev, "can't allocate memory for LED %d\n", i);
+ goto err_led;
+ }
+
+ name = (void *)(&led[1]);
+ snprintf(name, name_sz, "SRWS1::%s::RPM%d", hdev->uniq, i+1);
+ led->name = name;
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->brightness_get = steelseries_srws1_led_get_brightness;
+ led->brightness_set = steelseries_srws1_led_set_brightness;
+
+ drv_data->led[i] = led;
+ ret = led_classdev_register(&hdev->dev, led);
+
+ if (ret) {
+ hid_err(hdev, "failed to register LED %d. Aborting.\n", i);
+err_led:
+ /* Deregister all LEDs (if any) */
+ for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) {
+ led = drv_data->led[i];
+ drv_data->led[i] = NULL;
+ if (!led)
+ continue;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+ goto out; /* but let the driver continue without LEDs */
+ }
+ }
+out:
+ return 0;
+err_free:
+ kfree(drv_data);
+ return ret;
+}
+
+static void steelseries_srws1_remove(struct hid_device *hdev)
+{
+ int i;
+ struct led_classdev *led;
+
+ struct steelseries_srws1_data *drv_data = hid_get_drvdata(hdev);
+
+ if (drv_data) {
+ /* Deregister LEDs (if any) */
+ for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) {
+ led = drv_data->led[i];
+ drv_data->led[i] = NULL;
+ if (!led)
+ continue;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+
+ }
+
+ hid_hw_stop(hdev);
+ kfree(drv_data);
+ return;
+}
+#endif
+
+static __u8 *steelseries_srws1_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ if (*rsize >= 115 && rdesc[11] == 0x02 && rdesc[13] == 0xc8
+ && rdesc[29] == 0xbb && rdesc[40] == 0xc5) {
+ hid_info(hdev, "Fixing up Steelseries SRW-S1 report descriptor\n");
+ rdesc = steelseries_srws1_rdesc_fixed;
+ *rsize = sizeof(steelseries_srws1_rdesc_fixed);
+ }
+ return rdesc;
+}
+
+static const struct hid_device_id steelseries_srws1_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, steelseries_srws1_devices);
+
+static struct hid_driver steelseries_srws1_driver = {
+ .name = "steelseries_srws1",
+ .id_table = steelseries_srws1_devices,
+#if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
+ (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
+ .probe = steelseries_srws1_probe,
+ .remove = steelseries_srws1_remove,
+#endif
+ .report_fixup = steelseries_srws1_report_fixup
+};
+
+module_hid_driver(steelseries_srws1_driver);
+MODULE_LICENSE("GPL");