^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) * Copyright (c) 2000-2001 Vojtech Pavlik
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2000 Mark Fletcher
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^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) * Gravis Stinger gamepad driver for Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define DRIVER_DESC "Gravis Stinger gamepad driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Constants.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define STINGER_MAX_LENGTH 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * Per-Stinger data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct stinger {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct input_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) int idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) unsigned char data[STINGER_MAX_LENGTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) char phys[32];
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * stinger_process_packet() decodes packets the driver receives from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * Stinger. It updates the data accordingly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static void stinger_process_packet(struct stinger *stinger)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct input_dev *dev = stinger->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) unsigned char *data = stinger->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (!stinger->idx) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) input_report_key(dev, BTN_A, ((data[0] & 0x20) >> 5));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) input_report_key(dev, BTN_B, ((data[0] & 0x10) >> 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) input_report_key(dev, BTN_C, ((data[0] & 0x08) >> 3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) input_report_key(dev, BTN_X, ((data[0] & 0x04) >> 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) input_report_key(dev, BTN_Y, ((data[3] & 0x20) >> 5));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) input_report_key(dev, BTN_Z, ((data[3] & 0x10) >> 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) input_report_key(dev, BTN_TL, ((data[3] & 0x08) >> 3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) input_report_key(dev, BTN_TR, ((data[3] & 0x04) >> 2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) input_report_key(dev, BTN_SELECT, ((data[3] & 0x02) >> 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) input_report_key(dev, BTN_START, (data[3] & 0x01));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) input_report_abs(dev, ABS_X, (data[1] & 0x3F) - ((data[0] & 0x01) << 6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) input_report_abs(dev, ABS_Y, ((data[0] & 0x02) << 5) - (data[2] & 0x3F));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * stinger_interrupt() is called by the low level driver when characters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * are ready for us. We then buffer them for further processing, or call the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * packet processing routine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static irqreturn_t stinger_interrupt(struct serio *serio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned char data, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct stinger *stinger = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* All Stinger packets are 4 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (stinger->idx < STINGER_MAX_LENGTH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) stinger->data[stinger->idx++] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (stinger->idx == 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) stinger_process_packet(stinger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) stinger->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * stinger_disconnect() is the opposite of stinger_connect()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static void stinger_disconnect(struct serio *serio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct stinger *stinger = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) input_unregister_device(stinger->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) kfree(stinger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * stinger_connect() is the routine that is called when someone adds a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * new serio device that supports Stinger protocol and registers it as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * an input device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static int stinger_connect(struct serio *serio, struct serio_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct stinger *stinger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) stinger = kmalloc(sizeof(struct stinger), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (!stinger || !input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) stinger->dev = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) snprintf(stinger->phys, sizeof(stinger->phys), "%s/serio0", serio->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) input_dev->name = "Gravis Stinger";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) input_dev->phys = stinger->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) input_dev->id.bustype = BUS_RS232;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) input_dev->id.vendor = SERIO_STINGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) input_dev->id.product = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) input_dev->id.version = 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) input_dev->dev.parent = &serio->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) input_dev->keybit[BIT_WORD(BTN_A)] = BIT_MASK(BTN_A) | BIT_MASK(BTN_B) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) BIT_MASK(BTN_C) | BIT_MASK(BTN_X) | BIT_MASK(BTN_Y) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) BIT_MASK(BTN_Z) | BIT_MASK(BTN_TL) | BIT_MASK(BTN_TR) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) BIT_MASK(BTN_START) | BIT_MASK(BTN_SELECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) serio_set_drvdata(serio, stinger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) err = serio_open(serio, drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) err = input_register_device(stinger->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) goto fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) fail3: serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) fail2: serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) fail1: input_free_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) kfree(stinger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * The serio driver structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static const struct serio_device_id stinger_serio_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .type = SERIO_RS232,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .proto = SERIO_STINGER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .id = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .extra = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) { 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) MODULE_DEVICE_TABLE(serio, stinger_serio_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static struct serio_driver stinger_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .name = "stinger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .description = DRIVER_DESC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .id_table = stinger_serio_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .interrupt = stinger_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .connect = stinger_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .disconnect = stinger_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) module_serio_driver(stinger_drv);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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