^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for the Gravis Grip Multiport, a gamepad "hub" that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * connects up to four 9-pin digital gamepads/joysticks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Driver tested on SMP and UP kernel versions 2.4.18-4 and 2.4.18-5.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Thanks to Chris Gassib for helpful advice.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (c) 2002 Brian Bonnlander, Bill Soudan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (c) 1998-2000 Vojtech Pavlik
^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) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/gameport.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/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define DRIVER_DESC "Gravis Grip Multiport driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MODULE_AUTHOR("Brian Bonnlander");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #ifdef GRIP_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define dbg(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" , ## arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define dbg(format, arg...) do {} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define GRIP_MAX_PORTS 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * Grip multiport state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct grip_port {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct input_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int registered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* individual gamepad states */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int buttons;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int xaxes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int yaxes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int dirty; /* has the state been updated? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct grip_mp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct gameport *gameport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct grip_port *port[GRIP_MAX_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int reads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int bads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Multiport packet interpretation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define PACKET_FULL 0x80000000 /* packet is full */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define PACKET_IO_FAST 0x40000000 /* 3 bits per gameport read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define PACKET_IO_SLOW 0x20000000 /* 1 bit per gameport read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define PACKET_MP_MORE 0x04000000 /* multiport wants to send more */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define PACKET_MP_DONE 0x02000000 /* multiport done sending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * Packet status code interpretation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define IO_GOT_PACKET 0x0100 /* Got a packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define IO_MODE_FAST 0x0200 /* Used 3 data bits per gameport read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define IO_SLOT_CHANGE 0x0800 /* Multiport physical slot status changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define IO_DONE 0x1000 /* Multiport is done sending packets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define IO_RETRY 0x4000 /* Try again later to get packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define IO_RESET 0x8000 /* Force multiport to resend all packets */
^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) * Gamepad configuration data. Other 9-pin digital joystick devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * may work with the multiport, so this may not be an exhaustive list!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * Commodore 64 joystick remains untested.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define GRIP_INIT_DELAY 2000 /* 2 ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define GRIP_MODE_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define GRIP_MODE_RESET 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define GRIP_MODE_GP 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define GRIP_MODE_C64 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static const int grip_btn_gp[] = { BTN_TR, BTN_TL, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, -1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static const int grip_btn_c64[] = { BTN_JOYSTICK, -1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static const int grip_abs_gp[] = { ABS_X, ABS_Y, -1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static const int grip_abs_c64[] = { ABS_X, ABS_Y, -1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static const int *grip_abs[] = { NULL, NULL, grip_abs_gp, grip_abs_c64 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static const int *grip_btn[] = { NULL, NULL, grip_btn_gp, grip_btn_c64 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static const char *grip_name[] = { NULL, NULL, "Gravis Grip Pad", "Commodore 64 Joystick" };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static const int init_seq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Maps multiport directional values to X,Y axis values (each axis encoded in 3 bits) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static const int axis_map[] = { 5, 9, 1, 5, 6, 10, 2, 6, 4, 8, 0, 4, 5, 9, 1, 5 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static int register_slot(int i, struct grip_mp *grip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * Returns whether an odd or even number of bits are on in pkt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int bit_parity(u32 pkt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int x = pkt ^ (pkt >> 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) x ^= x >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) x ^= x >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) x ^= x >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) x ^= x >> 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return x & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * Poll gameport; return true if all bits set in 'onbits' are on and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * all bits set in 'offbits' are off.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static inline int poll_until(u8 onbits, u8 offbits, int u_sec, struct gameport* gp, u8 *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) int i, nloops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) nloops = gameport_time(gp, u_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) for (i = 0; i < nloops; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) *data = gameport_read(gp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if ((*data & onbits) == onbits &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) (~(*data) & offbits) == offbits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) dbg("gameport timed out after %d microseconds.\n", u_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * Gets a 28-bit packet from the multiport.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * After getting a packet successfully, commands encoded by sendcode may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * be sent to the multiport.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * The multiport clock value is reflected in gameport bit B4.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * Returns a packet status code indicating whether packet is valid, the transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * mode, and any error conditions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * sendflags: current I/O status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * sendcode: data to send to the multiport if sendflags is nonzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int mp_io(struct gameport* gameport, int sendflags, int sendcode, u32 *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) u8 raw_data; /* raw data from gameport */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) u8 data_mask; /* packet data bits from raw_data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) u32 pkt; /* packet temporary storage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) int bits_per_read; /* num packet bits per gameport read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) int portvals = 0; /* used for port value sanity check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* Gameport bits B0, B4, B5 should first be off, then B4 should come on. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) *packet = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) raw_data = gameport_read(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (raw_data & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return IO_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) for (i = 0; i < 64; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) raw_data = gameport_read(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) portvals |= 1 << ((raw_data >> 4) & 3); /* Demux B4, B5 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (portvals == 1) { /* B4, B5 off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) raw_data = gameport_read(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) portvals = raw_data & 0xf0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (raw_data & 0x31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) gameport_trigger(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (!poll_until(0x10, 0, 308, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return IO_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* Determine packet transfer mode and prepare for packet construction. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (raw_data & 0x20) { /* 3 data bits/read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) portvals |= raw_data >> 4; /* Compare B4-B7 before & after trigger */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (portvals != 0xb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) data_mask = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) bits_per_read = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) pkt = (PACKET_FULL | PACKET_IO_FAST) >> 28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) } else { /* 1 data bit/read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) data_mask = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) bits_per_read = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) pkt = (PACKET_FULL | PACKET_IO_SLOW) >> 28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) /* Construct a packet. Final data bits must be zero. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (!poll_until(0, 0x10, 77, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) raw_data = (raw_data >> 5) & data_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (pkt & PACKET_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) pkt = (pkt << bits_per_read) | raw_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (!poll_until(0x10, 0, 77, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (raw_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /* If 3 bits/read used, drop from 30 bits to 28. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (bits_per_read == 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) pkt = (pkt & 0xffff0000) | ((pkt << 1) & 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) pkt = (pkt >> 2) | 0xf0000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (bit_parity(pkt) == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* Acknowledge packet receipt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (!poll_until(0x30, 0, 77, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) raw_data = gameport_read(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (raw_data & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) gameport_trigger(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (!poll_until(0, 0x20, 77, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /* Return if we just wanted the packet or multiport wants to send more */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) *packet = pkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if ((sendflags == 0) || ((sendflags & IO_RETRY) && !(pkt & PACKET_MP_DONE)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return IO_GOT_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (pkt & PACKET_MP_MORE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return IO_GOT_PACKET | IO_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /* Multiport is done sending packets and is ready to receive data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (!poll_until(0x20, 0, 77, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return IO_GOT_PACKET | IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) raw_data = gameport_read(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (raw_data & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return IO_GOT_PACKET | IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* Trigger gameport based on bits in sendcode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) gameport_trigger(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (!poll_until(0x20, 0x10, 116, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return IO_GOT_PACKET | IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (!poll_until(0x30, 0, 193, gameport, &raw_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return IO_GOT_PACKET | IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (raw_data & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return IO_GOT_PACKET | IO_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (sendcode & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) gameport_trigger(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) sendcode >>= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) } while (sendcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return IO_GOT_PACKET | IO_MODE_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * Disables and restores interrupts for mp_io(), which does the actual I/O.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int multiport_io(struct gameport* gameport, int sendflags, int sendcode, u32 *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) status = mp_io(gameport, sendflags, sendcode, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^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) * Puts multiport into digital mode. Multiport LED turns green.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * Returns true if a valid digital packet was received, false otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static int dig_mode_start(struct gameport *gameport, u32 *packet)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) int flags, tries = 0, bads = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) for (i = 0; i < ARRAY_SIZE(init_seq); i++) { /* Send magic sequence */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (init_seq[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) gameport_trigger(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) udelay(GRIP_INIT_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) for (i = 0; i < 16; i++) /* Wait for multiport to settle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) udelay(GRIP_INIT_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) while (tries < 64 && bads < 8) { /* Reset multiport and try getting a packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) flags = multiport_io(gameport, IO_RESET, 0x27, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (flags & IO_MODE_FAST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (flags & IO_RETRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) tries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) bads++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * Packet structure: B0-B15 => gamepad state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * B16-B20 => gamepad device type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * B21-B24 => multiport slot index (1-4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * Known device types: 0x1f (grip pad), 0x0 (no device). Others may exist.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * Returns the packet status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static int get_and_decode_packet(struct grip_mp *grip, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct grip_port *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) u32 packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int joytype = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* Get a packet and check for validity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) flags &= IO_RESET | IO_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) flags = multiport_io(grip->gameport, flags, 0, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) grip->reads++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) if (packet & PACKET_MP_DONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) flags |= IO_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (flags && !(flags & IO_GOT_PACKET)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) grip->bads++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* Ignore non-gamepad packets, e.g. multiport hardware version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) slot = ((packet >> 21) & 0xf) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if ((slot < 0) || (slot > 3))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) port = grip->port[slot];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * Handle "reset" packets, which occur at startup, and when gamepads
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * are removed or plugged in. May contain configuration of a new gamepad.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) joytype = (packet >> 16) & 0x1f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!joytype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (port->registered) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) printk(KERN_INFO "grip_mp: removing %s, slot %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) grip_name[port->mode], slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) input_unregister_device(port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) port->registered = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) dbg("Reset: grip multiport slot %d\n", slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) port->mode = GRIP_MODE_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) flags |= IO_SLOT_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /* Interpret a grip pad packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (joytype == 0x1f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) int dir = (packet >> 8) & 0xf; /* eight way directional value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) port->buttons = (~packet) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) port->yaxes = ((axis_map[dir] >> 2) & 3) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) port->xaxes = (axis_map[dir] & 3) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) port->dirty = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (port->mode == GRIP_MODE_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) flags |= IO_SLOT_CHANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) port->mode = GRIP_MODE_GP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (!port->registered) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) dbg("New Grip pad in multiport slot %d.\n", slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (register_slot(slot, grip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) port->mode = GRIP_MODE_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) port->dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) /* Handle non-grip device codes. For now, just print diagnostics. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static int strange_code = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (strange_code != joytype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) printk(KERN_INFO "Possible non-grip pad/joystick detected.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) printk(KERN_INFO "Got joy type 0x%x and packet 0x%x.\n", joytype, packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) strange_code = joytype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * Returns true if all multiport slot states appear valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) static int slots_valid(struct grip_mp *grip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) int flags, slot, invalid = 0, active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) flags = get_and_decode_packet(grip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (!(flags & IO_GOT_PACKET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) for (slot = 0; slot < 4; slot++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (grip->port[slot]->mode == GRIP_MODE_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) invalid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (grip->port[slot]->mode != GRIP_MODE_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) active = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) /* Return true if no active slot but multiport sent all its data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (!active)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return (flags & IO_DONE) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /* Return false if invalid device code received */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return invalid ? 0 : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * Returns whether the multiport was placed into digital mode and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * able to communicate its state successfully.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) static int multiport_init(struct grip_mp *grip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) int dig_mode, initialized = 0, tries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) u32 packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) dig_mode = dig_mode_start(grip->gameport, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) while (!dig_mode && tries < 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) dig_mode = dig_mode_start(grip->gameport, &packet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) tries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (dig_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) dbg("multiport_init(): digital mode activated.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) dbg("multiport_init(): unable to activate digital mode.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* Get packets, store multiport state, and check state's validity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) for (tries = 0; tries < 4096; tries++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (slots_valid(grip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) initialized = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) dbg("multiport_init(): initialized == %d\n", initialized);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) return initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) * Reports joystick state to the linux input layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) static void report_slot(struct grip_mp *grip, int slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) struct grip_port *port = grip->port[slot];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /* Store button states with linux input driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) for (i = 0; i < 8; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) input_report_key(port->dev, grip_btn_gp[i], (port->buttons >> i) & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /* Store axis states with linux driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) input_report_abs(port->dev, ABS_X, port->xaxes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) input_report_abs(port->dev, ABS_Y, port->yaxes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) /* Tell the receiver of the events to process them */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) input_sync(port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) port->dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * Get the multiport state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static void grip_poll(struct gameport *gameport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) struct grip_mp *grip = gameport_get_drvdata(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) int i, npkts, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) for (npkts = 0; npkts < 4; npkts++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) flags = IO_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) for (i = 0; i < 32; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) flags = get_and_decode_packet(grip, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if ((flags & IO_GOT_PACKET) || !(flags & IO_RETRY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) if (flags & IO_DONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) for (i = 0; i < 4; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (grip->port[i]->dirty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) report_slot(grip, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * Called when a joystick device file is opened
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static int grip_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) struct grip_mp *grip = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) gameport_start_polling(grip->gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * Called when a joystick device file is closed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) static void grip_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) struct grip_mp *grip = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) gameport_stop_polling(grip->gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * Tell the linux input layer about a newly plugged-in gamepad.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) static int register_slot(int slot, struct grip_mp *grip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) struct grip_port *port = grip->port[slot];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) int j, t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) port->dev = input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (!input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) input_dev->name = grip_name[port->mode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) input_dev->id.bustype = BUS_GAMEPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) input_dev->id.vendor = GAMEPORT_ID_VENDOR_GRAVIS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) input_dev->id.product = 0x0100 + port->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) input_dev->id.version = 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) input_dev->dev.parent = &grip->gameport->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) input_set_drvdata(input_dev, grip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) input_dev->open = grip_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) input_dev->close = grip_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) for (j = 0; (t = grip_abs[port->mode][j]) >= 0; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) input_set_abs_params(input_dev, t, -1, 1, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) for (j = 0; (t = grip_btn[port->mode][j]) >= 0; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (t > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) set_bit(t, input_dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) err = input_register_device(port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) input_free_device(port->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) port->registered = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (port->dirty) /* report initial state, if any */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) report_slot(grip, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) static int grip_connect(struct gameport *gameport, struct gameport_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) struct grip_mp *grip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (!(grip = kzalloc(sizeof(struct grip_mp), GFP_KERNEL)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) grip->gameport = gameport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) gameport_set_drvdata(gameport, grip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) gameport_set_poll_handler(gameport, grip_poll);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) gameport_set_poll_interval(gameport, 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) if (!multiport_init(grip)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (!grip->port[0]->mode && !grip->port[1]->mode && !grip->port[2]->mode && !grip->port[3]->mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) /* nothing plugged in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) fail2: gameport_close(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) fail1: gameport_set_drvdata(gameport, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) kfree(grip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) static void grip_disconnect(struct gameport *gameport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) struct grip_mp *grip = gameport_get_drvdata(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) for (i = 0; i < 4; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (grip->port[i]->registered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) input_unregister_device(grip->port[i]->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) gameport_close(gameport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) gameport_set_drvdata(gameport, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) kfree(grip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) static struct gameport_driver grip_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) .name = "grip_mp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) .description = DRIVER_DESC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) .connect = grip_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) .disconnect = grip_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) module_gameport_driver(grip_drv);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags