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551 lines
13 KiB
551 lines
13 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 1998-2005 Vojtech Pavlik |
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*/ |
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|
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/* |
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* Logitech ADI joystick family driver for Linux |
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*/ |
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/* |
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*/ |
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#include <linux/delay.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <linux/input.h> |
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#include <linux/gameport.h> |
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#include <linux/jiffies.h> |
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#define DRIVER_DESC "Logitech ADI joystick family driver" |
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MODULE_AUTHOR("Vojtech Pavlik <[email protected]>"); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL"); |
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/* |
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* Times, array sizes, flags, ids. |
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*/ |
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#define ADI_MAX_START 200 /* Trigger to packet timeout [200us] */ |
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#define ADI_MAX_STROBE 40 /* Single bit timeout [40us] */ |
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#define ADI_INIT_DELAY 10 /* Delay after init packet [10ms] */ |
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#define ADI_DATA_DELAY 4 /* Delay after data packet [4ms] */ |
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#define ADI_MAX_LENGTH 256 |
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#define ADI_MIN_LENGTH 8 |
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#define ADI_MIN_LEN_LENGTH 10 |
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#define ADI_MIN_ID_LENGTH 66 |
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#define ADI_MAX_NAME_LENGTH 64 |
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#define ADI_MAX_CNAME_LENGTH 16 |
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#define ADI_MAX_PHYS_LENGTH 64 |
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#define ADI_FLAG_HAT 0x04 |
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#define ADI_FLAG_10BIT 0x08 |
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#define ADI_ID_TPD 0x01 |
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#define ADI_ID_WGP 0x06 |
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#define ADI_ID_WGPE 0x08 |
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#define ADI_ID_MAX 0x0a |
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/* |
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* Names, buttons, axes ... |
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*/ |
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static char *adi_names[] = { "WingMan Extreme Digital", "ThunderPad Digital", "SideCar", "CyberMan 2", |
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"WingMan Interceptor", "WingMan Formula", "WingMan GamePad", |
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"WingMan Extreme Digital 3D", "WingMan GamePad Extreme", |
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"WingMan GamePad USB", "Unknown Device %#x" }; |
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static char adi_wmgpe_abs[] = { ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y }; |
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static char adi_wmi_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; |
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static char adi_wmed3d_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RZ, ABS_HAT0X, ABS_HAT0Y }; |
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static char adi_cm2_abs[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ }; |
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static char adi_wmf_abs[] = { ABS_WHEEL, ABS_GAS, ABS_BRAKE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; |
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static short adi_wmgpe_key[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT }; |
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static short adi_wmi_key[] = { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_EXTRA }; |
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static short adi_wmed3d_key[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2 }; |
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static short adi_cm2_key[] = { BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8 }; |
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static char* adi_abs[] = { adi_wmi_abs, adi_wmgpe_abs, adi_wmf_abs, adi_cm2_abs, adi_wmi_abs, adi_wmf_abs, |
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adi_wmgpe_abs, adi_wmed3d_abs, adi_wmgpe_abs, adi_wmgpe_abs, adi_wmi_abs }; |
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static short* adi_key[] = { adi_wmi_key, adi_wmgpe_key, adi_cm2_key, adi_cm2_key, adi_wmi_key, adi_cm2_key, |
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adi_wmgpe_key, adi_wmed3d_key, adi_wmgpe_key, adi_wmgpe_key, adi_wmi_key }; |
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/* |
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* Hat to axis conversion arrays. |
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*/ |
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static struct { |
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int x; |
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int y; |
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} adi_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; |
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/* |
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* Per-port information. |
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*/ |
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struct adi { |
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struct input_dev *dev; |
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int length; |
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int ret; |
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int idx; |
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unsigned char id; |
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char buttons; |
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char axes10; |
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char axes8; |
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signed char pad; |
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char hats; |
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char *abs; |
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short *key; |
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char name[ADI_MAX_NAME_LENGTH]; |
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char cname[ADI_MAX_CNAME_LENGTH]; |
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char phys[ADI_MAX_PHYS_LENGTH]; |
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unsigned char data[ADI_MAX_LENGTH]; |
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}; |
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struct adi_port { |
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struct gameport *gameport; |
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struct adi adi[2]; |
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int bad; |
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int reads; |
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}; |
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/* |
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* adi_read_packet() reads a Logitech ADI packet. |
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*/ |
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static void adi_read_packet(struct adi_port *port) |
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{ |
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struct adi *adi = port->adi; |
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struct gameport *gameport = port->gameport; |
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unsigned char u, v, w, x, z; |
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int t[2], s[2], i; |
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unsigned long flags; |
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for (i = 0; i < 2; i++) { |
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adi[i].ret = -1; |
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t[i] = gameport_time(gameport, ADI_MAX_START); |
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s[i] = 0; |
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} |
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local_irq_save(flags); |
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gameport_trigger(gameport); |
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v = z = gameport_read(gameport); |
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do { |
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u = v; |
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w = u ^ (v = x = gameport_read(gameport)); |
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for (i = 0; i < 2; i++, w >>= 2, x >>= 2) { |
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t[i]--; |
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if ((w & 0x30) && s[i]) { |
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if ((w & 0x30) < 0x30 && adi[i].ret < ADI_MAX_LENGTH && t[i] > 0) { |
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adi[i].data[++adi[i].ret] = w; |
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t[i] = gameport_time(gameport, ADI_MAX_STROBE); |
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} else t[i] = 0; |
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} else if (!(x & 0x30)) s[i] = 1; |
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} |
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} while (t[0] > 0 || t[1] > 0); |
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local_irq_restore(flags); |
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return; |
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} |
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/* |
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* adi_move_bits() detects a possible 2-stream mode, and moves |
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* the bits accordingly. |
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*/ |
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static void adi_move_bits(struct adi_port *port, int length) |
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{ |
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int i; |
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struct adi *adi = port->adi; |
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adi[0].idx = adi[1].idx = 0; |
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if (adi[0].ret <= 0 || adi[1].ret <= 0) return; |
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if (adi[0].data[0] & 0x20 || ~adi[1].data[0] & 0x20) return; |
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for (i = 1; i <= adi[1].ret; i++) |
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adi[0].data[((length - 1) >> 1) + i + 1] = adi[1].data[i]; |
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adi[0].ret += adi[1].ret; |
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adi[1].ret = -1; |
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} |
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/* |
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* adi_get_bits() gathers bits from the data packet. |
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*/ |
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static inline int adi_get_bits(struct adi *adi, int count) |
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{ |
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int bits = 0; |
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int i; |
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if ((adi->idx += count) > adi->ret) return 0; |
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for (i = 0; i < count; i++) |
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bits |= ((adi->data[adi->idx - i] >> 5) & 1) << i; |
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return bits; |
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} |
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/* |
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* adi_decode() decodes Logitech joystick data into input events. |
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*/ |
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static int adi_decode(struct adi *adi) |
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{ |
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struct input_dev *dev = adi->dev; |
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char *abs = adi->abs; |
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short *key = adi->key; |
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int i, t; |
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if (adi->ret < adi->length || adi->id != (adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4))) |
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return -1; |
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for (i = 0; i < adi->axes10; i++) |
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input_report_abs(dev, *abs++, adi_get_bits(adi, 10)); |
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for (i = 0; i < adi->axes8; i++) |
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input_report_abs(dev, *abs++, adi_get_bits(adi, 8)); |
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for (i = 0; i < adi->buttons && i < 63; i++) { |
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if (i == adi->pad) { |
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t = adi_get_bits(adi, 4); |
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input_report_abs(dev, *abs++, ((t >> 2) & 1) - ( t & 1)); |
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input_report_abs(dev, *abs++, ((t >> 1) & 1) - ((t >> 3) & 1)); |
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} |
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input_report_key(dev, *key++, adi_get_bits(adi, 1)); |
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} |
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for (i = 0; i < adi->hats; i++) { |
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if ((t = adi_get_bits(adi, 4)) > 8) t = 0; |
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input_report_abs(dev, *abs++, adi_hat_to_axis[t].x); |
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input_report_abs(dev, *abs++, adi_hat_to_axis[t].y); |
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} |
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for (i = 63; i < adi->buttons; i++) |
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input_report_key(dev, *key++, adi_get_bits(adi, 1)); |
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input_sync(dev); |
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return 0; |
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} |
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/* |
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* adi_read() reads the data packet and decodes it. |
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*/ |
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static int adi_read(struct adi_port *port) |
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{ |
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int i; |
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int result = 0; |
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adi_read_packet(port); |
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adi_move_bits(port, port->adi[0].length); |
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for (i = 0; i < 2; i++) |
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if (port->adi[i].length) |
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result |= adi_decode(port->adi + i); |
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return result; |
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} |
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/* |
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* adi_poll() repeatedly polls the Logitech joysticks. |
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*/ |
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static void adi_poll(struct gameport *gameport) |
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{ |
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struct adi_port *port = gameport_get_drvdata(gameport); |
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port->bad -= adi_read(port); |
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port->reads++; |
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} |
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/* |
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* adi_open() is a callback from the input open routine. |
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*/ |
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static int adi_open(struct input_dev *dev) |
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{ |
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struct adi_port *port = input_get_drvdata(dev); |
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gameport_start_polling(port->gameport); |
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return 0; |
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} |
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/* |
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* adi_close() is a callback from the input close routine. |
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*/ |
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static void adi_close(struct input_dev *dev) |
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{ |
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struct adi_port *port = input_get_drvdata(dev); |
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gameport_stop_polling(port->gameport); |
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} |
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/* |
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* adi_init_digital() sends a trigger & delay sequence |
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* to reset and initialize a Logitech joystick into digital mode. |
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*/ |
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static void adi_init_digital(struct gameport *gameport) |
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{ |
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static const int seq[] = { 4, -2, -3, 10, -6, -11, -7, -9, 11, 0 }; |
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int i; |
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for (i = 0; seq[i]; i++) { |
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gameport_trigger(gameport); |
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if (seq[i] > 0) |
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msleep(seq[i]); |
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if (seq[i] < 0) { |
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mdelay(-seq[i]); |
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udelay(-seq[i]*14); /* It looks like mdelay() is off by approx 1.4% */ |
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} |
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} |
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} |
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static void adi_id_decode(struct adi *adi, struct adi_port *port) |
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{ |
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int i, t; |
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if (adi->ret < ADI_MIN_ID_LENGTH) /* Minimum ID packet length */ |
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return; |
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if (adi->ret < (t = adi_get_bits(adi, 10))) { |
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printk(KERN_WARNING "adi: Short ID packet: reported: %d != read: %d\n", t, adi->ret); |
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return; |
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} |
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adi->id = adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4); |
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if ((t = adi_get_bits(adi, 4)) & ADI_FLAG_HAT) adi->hats++; |
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adi->length = adi_get_bits(adi, 10); |
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if (adi->length >= ADI_MAX_LENGTH || adi->length < ADI_MIN_LENGTH) { |
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printk(KERN_WARNING "adi: Bad data packet length (%d).\n", adi->length); |
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adi->length = 0; |
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return; |
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} |
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adi->axes8 = adi_get_bits(adi, 4); |
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adi->buttons = adi_get_bits(adi, 6); |
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if (adi_get_bits(adi, 6) != 8 && adi->hats) { |
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printk(KERN_WARNING "adi: Other than 8-dir POVs not supported yet.\n"); |
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adi->length = 0; |
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return; |
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} |
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adi->buttons += adi_get_bits(adi, 6); |
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adi->hats += adi_get_bits(adi, 4); |
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i = adi_get_bits(adi, 4); |
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if (t & ADI_FLAG_10BIT) { |
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adi->axes10 = adi->axes8 - i; |
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adi->axes8 = i; |
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} |
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t = adi_get_bits(adi, 4); |
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for (i = 0; i < t; i++) |
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adi->cname[i] = adi_get_bits(adi, 8); |
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adi->cname[i] = 0; |
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t = 8 + adi->buttons + adi->axes10 * 10 + adi->axes8 * 8 + adi->hats * 4; |
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if (adi->length != t && adi->length != t + (t & 1)) { |
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printk(KERN_WARNING "adi: Expected length %d != data length %d\n", t, adi->length); |
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adi->length = 0; |
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return; |
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} |
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switch (adi->id) { |
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case ADI_ID_TPD: |
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adi->pad = 4; |
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adi->buttons -= 4; |
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break; |
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case ADI_ID_WGP: |
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adi->pad = 0; |
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adi->buttons -= 4; |
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break; |
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default: |
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adi->pad = -1; |
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break; |
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} |
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} |
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static int adi_init_input(struct adi *adi, struct adi_port *port, int half) |
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{ |
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struct input_dev *input_dev; |
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char buf[ADI_MAX_NAME_LENGTH]; |
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int i, t; |
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adi->dev = input_dev = input_allocate_device(); |
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if (!input_dev) |
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return -ENOMEM; |
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t = adi->id < ADI_ID_MAX ? adi->id : ADI_ID_MAX; |
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snprintf(buf, ADI_MAX_PHYS_LENGTH, adi_names[t], adi->id); |
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snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s [%s]", buf, adi->cname); |
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snprintf(adi->phys, ADI_MAX_PHYS_LENGTH, "%s/input%d", port->gameport->phys, half); |
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adi->abs = adi_abs[t]; |
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adi->key = adi_key[t]; |
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input_dev->name = adi->name; |
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input_dev->phys = adi->phys; |
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input_dev->id.bustype = BUS_GAMEPORT; |
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input_dev->id.vendor = GAMEPORT_ID_VENDOR_LOGITECH; |
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input_dev->id.product = adi->id; |
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input_dev->id.version = 0x0100; |
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input_dev->dev.parent = &port->gameport->dev; |
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input_set_drvdata(input_dev, port); |
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input_dev->open = adi_open; |
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input_dev->close = adi_close; |
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
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for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) |
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set_bit(adi->abs[i], input_dev->absbit); |
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for (i = 0; i < adi->buttons; i++) |
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set_bit(adi->key[i], input_dev->keybit); |
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return 0; |
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} |
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static void adi_init_center(struct adi *adi) |
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{ |
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int i, t, x; |
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if (!adi->length) |
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return; |
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for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) { |
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t = adi->abs[i]; |
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x = input_abs_get_val(adi->dev, t); |
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if (t == ABS_THROTTLE || t == ABS_RUDDER || adi->id == ADI_ID_WGPE) |
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x = i < adi->axes10 ? 512 : 128; |
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if (i < adi->axes10) |
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input_set_abs_params(adi->dev, t, 64, x * 2 - 64, 2, 16); |
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else if (i < adi->axes10 + adi->axes8) |
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input_set_abs_params(adi->dev, t, 48, x * 2 - 48, 1, 16); |
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else |
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input_set_abs_params(adi->dev, t, -1, 1, 0, 0); |
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} |
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} |
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/* |
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* adi_connect() probes for Logitech ADI joysticks. |
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*/ |
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static int adi_connect(struct gameport *gameport, struct gameport_driver *drv) |
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{ |
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struct adi_port *port; |
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int i; |
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int err; |
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port = kzalloc(sizeof(struct adi_port), GFP_KERNEL); |
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if (!port) |
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return -ENOMEM; |
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port->gameport = gameport; |
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gameport_set_drvdata(gameport, port); |
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err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); |
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if (err) |
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goto fail1; |
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adi_init_digital(gameport); |
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adi_read_packet(port); |
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if (port->adi[0].ret >= ADI_MIN_LEN_LENGTH) |
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adi_move_bits(port, adi_get_bits(port->adi, 10)); |
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for (i = 0; i < 2; i++) { |
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adi_id_decode(port->adi + i, port); |
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if (!port->adi[i].length) |
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continue; |
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err = adi_init_input(port->adi + i, port, i); |
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if (err) |
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goto fail2; |
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} |
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if (!port->adi[0].length && !port->adi[1].length) { |
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err = -ENODEV; |
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goto fail2; |
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} |
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gameport_set_poll_handler(gameport, adi_poll); |
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gameport_set_poll_interval(gameport, 20); |
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msleep(ADI_INIT_DELAY); |
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if (adi_read(port)) { |
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msleep(ADI_DATA_DELAY); |
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adi_read(port); |
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} |
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for (i = 0; i < 2; i++) |
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if (port->adi[i].length > 0) { |
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adi_init_center(port->adi + i); |
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err = input_register_device(port->adi[i].dev); |
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if (err) |
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goto fail3; |
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} |
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return 0; |
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fail3: while (--i >= 0) { |
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if (port->adi[i].length > 0) { |
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input_unregister_device(port->adi[i].dev); |
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port->adi[i].dev = NULL; |
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} |
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} |
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fail2: for (i = 0; i < 2; i++) |
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input_free_device(port->adi[i].dev); |
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gameport_close(gameport); |
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fail1: gameport_set_drvdata(gameport, NULL); |
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kfree(port); |
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return err; |
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} |
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static void adi_disconnect(struct gameport *gameport) |
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{ |
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int i; |
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struct adi_port *port = gameport_get_drvdata(gameport); |
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|
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for (i = 0; i < 2; i++) |
|
if (port->adi[i].length > 0) |
|
input_unregister_device(port->adi[i].dev); |
|
gameport_close(gameport); |
|
gameport_set_drvdata(gameport, NULL); |
|
kfree(port); |
|
} |
|
|
|
static struct gameport_driver adi_drv = { |
|
.driver = { |
|
.name = "adi", |
|
}, |
|
.description = DRIVER_DESC, |
|
.connect = adi_connect, |
|
.disconnect = adi_disconnect, |
|
}; |
|
|
|
module_gameport_driver(adi_drv);
|
|
|