^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * TechnoTrend USB IR Receiver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2012 Sean Young <sean@mess.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/usb/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <media/rc-core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define DRIVER_NAME "ttusbir"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define DRIVER_DESC "TechnoTrend USB IR Receiver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * The Windows driver uses 8 URBS, the original lirc drivers has a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * configurable amount (2 default, 4 max). This device generates about 125
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * messages per second (!), whether IR is idle or not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define NUM_URBS 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define US_PER_BYTE 62
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define US_PER_BIT (US_PER_BYTE / 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct ttusbir {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct rc_dev *rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct usb_device *udev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct urb *urb[NUM_URBS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct led_classdev led;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct urb *bulk_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) uint8_t bulk_buffer[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int bulk_out_endp, iso_in_endp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) bool led_on, is_led_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) atomic_t led_complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) char phys[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static enum led_brightness ttusbir_brightness_get(struct led_classdev *led_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct ttusbir *tt = container_of(led_dev, struct ttusbir, led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return tt->led_on ? LED_FULL : LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static void ttusbir_set_led(struct ttusbir *tt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) smp_mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (tt->led_on != tt->is_led_on && tt->udev &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) atomic_add_unless(&tt->led_complete, 1, 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) tt->bulk_buffer[4] = tt->is_led_on = tt->led_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ret = usb_submit_urb(tt->bulk_urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) dev_warn(tt->dev, "failed to submit bulk urb: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) atomic_dec(&tt->led_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static void ttusbir_brightness_set(struct led_classdev *led_dev, enum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) led_brightness brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct ttusbir *tt = container_of(led_dev, struct ttusbir, led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) tt->led_on = brightness != LED_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ttusbir_set_led(tt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * The urb cannot be reused until the urb completes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static void ttusbir_bulk_complete(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct ttusbir *tt = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) atomic_dec(&tt->led_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) switch (urb->status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) usb_unlink_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) case -EPIPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dev_dbg(tt->dev, "Error: urb status = %d\n", urb->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ttusbir_set_led(tt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * The data is one bit per sample, a set bit signifying silence and samples
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * being MSB first. Bit 0 can contain garbage so take it to be whatever
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * bit 1 is, so we don't have unexpected edges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static void ttusbir_process_ir_data(struct ttusbir *tt, uint8_t *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct ir_raw_event rawir = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) unsigned i, v, b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) bool event = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) for (i = 0; i < 128; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) v = buf[i] & 0xfe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) switch (v) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) case 0xfe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) rawir.pulse = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) rawir.duration = US_PER_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (ir_raw_event_store_with_filter(tt->rc, &rawir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) event = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) rawir.pulse = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) rawir.duration = US_PER_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (ir_raw_event_store_with_filter(tt->rc, &rawir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) event = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* one edge per byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (v & 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) b = ffz(v | 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) rawir.pulse = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) b = ffs(v) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) rawir.pulse = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) rawir.duration = US_PER_BIT * (8 - b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (ir_raw_event_store_with_filter(tt->rc, &rawir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) event = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) rawir.pulse = !rawir.pulse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) rawir.duration = US_PER_BIT * b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (ir_raw_event_store_with_filter(tt->rc, &rawir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) event = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* don't wakeup when there's nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) ir_raw_event_handle(tt->rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static void ttusbir_urb_complete(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct ttusbir *tt = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) switch (urb->status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) ttusbir_process_ir_data(tt, urb->transfer_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) usb_unlink_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) case -EPIPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) dev_dbg(tt->dev, "Error: urb status = %d\n", urb->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rc = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (rc && rc != -ENODEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) dev_warn(tt->dev, "failed to resubmit urb: %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static int ttusbir_probe(struct usb_interface *intf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct ttusbir *tt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct usb_interface_descriptor *idesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct usb_endpoint_descriptor *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct rc_dev *rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) int i, j, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) int altsetting = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) tt = kzalloc(sizeof(*tt), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) rc = rc_allocate_device(RC_DRIVER_IR_RAW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!tt || !rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /* find the correct alt setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) for (i = 0; i < intf->num_altsetting && altsetting == -1; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int max_packet, bulk_out_endp = -1, iso_in_endp = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) idesc = &intf->altsetting[i].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) for (j = 0; j < idesc->bNumEndpoints; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) desc = &intf->altsetting[i].endpoint[j].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) max_packet = le16_to_cpu(desc->wMaxPacketSize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (usb_endpoint_dir_in(desc) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) usb_endpoint_xfer_isoc(desc) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) max_packet == 0x10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) iso_in_endp = j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) else if (usb_endpoint_dir_out(desc) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) usb_endpoint_xfer_bulk(desc) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) max_packet == 0x20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) bulk_out_endp = j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (bulk_out_endp != -1 && iso_in_endp != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) tt->bulk_out_endp = bulk_out_endp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) tt->iso_in_endp = iso_in_endp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) altsetting = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (altsetting == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) dev_err(&intf->dev, "cannot find expected altsetting\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) tt->dev = &intf->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) tt->udev = interface_to_usbdev(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) tt->rc = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ret = usb_set_interface(tt->udev, 0, altsetting);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) for (i = 0; i < NUM_URBS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct urb *urb = usb_alloc_urb(8, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) void *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (!urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) urb->dev = tt->udev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) urb->context = tt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) urb->pipe = usb_rcvisocpipe(tt->udev, tt->iso_in_endp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) urb->interval = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) buffer = usb_alloc_coherent(tt->udev, 128, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) &urb->transfer_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (!buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP | URB_ISO_ASAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) urb->transfer_buffer = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) urb->complete = ttusbir_urb_complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) urb->number_of_packets = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) urb->transfer_buffer_length = 128;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) for (j = 0; j < 8; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) urb->iso_frame_desc[j].offset = j * 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) urb->iso_frame_desc[j].length = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) tt->urb[i] = urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) tt->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (!tt->bulk_urb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) tt->bulk_buffer[0] = 0xaa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) tt->bulk_buffer[1] = 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) tt->bulk_buffer[2] = 0x05;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) tt->bulk_buffer[3] = 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) usb_fill_bulk_urb(tt->bulk_urb, tt->udev, usb_sndbulkpipe(tt->udev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) tt->bulk_out_endp), tt->bulk_buffer, sizeof(tt->bulk_buffer),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) ttusbir_bulk_complete, tt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) tt->led.name = "ttusbir:green:power";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) tt->led.default_trigger = "rc-feedback";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) tt->led.brightness_set = ttusbir_brightness_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) tt->led.brightness_get = ttusbir_brightness_get;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) tt->is_led_on = tt->led_on = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) atomic_set(&tt->led_complete, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) ret = led_classdev_register(&intf->dev, &tt->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) usb_make_path(tt->udev, tt->phys, sizeof(tt->phys));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) rc->device_name = DRIVER_DESC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) rc->input_phys = tt->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) usb_to_input_id(tt->udev, &rc->input_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) rc->dev.parent = &intf->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) rc->priv = tt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) rc->driver_name = DRIVER_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) rc->map_name = RC_MAP_TT_1500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) rc->min_timeout = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) rc->timeout = IR_DEFAULT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * The precision is US_PER_BIT, but since every 8th bit can be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * overwritten with garbage the accuracy is at best 2 * US_PER_BIT.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) rc->rx_resolution = 2 * US_PER_BIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) ret = rc_register_device(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) dev_err(&intf->dev, "failed to register rc device %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) goto out2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) usb_set_intfdata(intf, tt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) for (i = 0; i < NUM_URBS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) ret = usb_submit_urb(tt->urb[i], GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) dev_err(tt->dev, "failed to submit urb %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) goto out3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) out3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) rc_unregister_device(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) rc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) out2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) led_classdev_unregister(&tt->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (tt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) for (i = 0; i < NUM_URBS && tt->urb[i]; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct urb *urb = tt->urb[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) usb_kill_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) usb_free_coherent(tt->udev, 128, urb->transfer_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) urb->transfer_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) usb_free_urb(urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) usb_kill_urb(tt->bulk_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) usb_free_urb(tt->bulk_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) kfree(tt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) rc_free_device(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static void ttusbir_disconnect(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct ttusbir *tt = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) struct usb_device *udev = tt->udev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) tt->udev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) rc_unregister_device(tt->rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) led_classdev_unregister(&tt->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) for (i = 0; i < NUM_URBS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) usb_kill_urb(tt->urb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) usb_free_coherent(udev, 128, tt->urb[i]->transfer_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) tt->urb[i]->transfer_dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) usb_free_urb(tt->urb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) usb_kill_urb(tt->bulk_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) usb_free_urb(tt->bulk_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) usb_set_intfdata(intf, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) kfree(tt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) static int ttusbir_suspend(struct usb_interface *intf, pm_message_t message)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) struct ttusbir *tt = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) for (i = 0; i < NUM_URBS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) usb_kill_urb(tt->urb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) led_classdev_suspend(&tt->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) usb_kill_urb(tt->bulk_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static int ttusbir_resume(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct ttusbir *tt = usb_get_intfdata(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) int i, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) tt->is_led_on = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) led_classdev_resume(&tt->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) for (i = 0; i < NUM_URBS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) rc = usb_submit_urb(tt->urb[i], GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) dev_warn(tt->dev, "failed to submit urb: %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static const struct usb_device_id ttusbir_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) { USB_DEVICE(0x0b48, 0x2003) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static struct usb_driver ttusbir_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) .name = DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) .id_table = ttusbir_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) .probe = ttusbir_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) .suspend = ttusbir_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) .resume = ttusbir_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) .reset_resume = ttusbir_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) .disconnect = ttusbir_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) module_usb_driver(ttusbir_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) MODULE_AUTHOR("Sean Young <sean@mess.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) MODULE_DEVICE_TABLE(usb, ttusbir_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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