diff options
| -rw-r--r-- | Documentation/input/joystick-parport.txt | 11 | ||||
| -rw-r--r-- | drivers/input/joystick/gamecon.c | 83 |
2 files changed, 76 insertions, 18 deletions
diff --git a/Documentation/input/joystick-parport.txt b/Documentation/input/joystick-parport.txt index 88a011c9f985..d537c48cc6d0 100644 --- a/Documentation/input/joystick-parport.txt +++ b/Documentation/input/joystick-parport.txt @@ -36,12 +36,12 @@ with them. All NES and SNES use the same synchronous serial protocol, clocked from the computer's side (and thus timing insensitive). To allow up to 5 NES -and/or SNES gamepads connected to the parallel port at once, the output -lines of the parallel port are shared, while one of 5 available input lines -is assigned to each gamepad. +and/or SNES gamepads and/or SNES mice connected to the parallel port at once, +the output lines of the parallel port are shared, while one of 5 available +input lines is assigned to each gamepad. This protocol is handled by the gamecon.c driver, so that's the one -you'll use for NES and SNES gamepads. +you'll use for NES, SNES gamepads and SNES mice. The main problem with PC parallel ports is that they don't have +5V power source on any of their pins. So, if you want a reliable source of power @@ -106,7 +106,7 @@ A, Turbo B, Select and Start, and is connected through 5 wires, then it is either a NES or NES clone and will work with this connection. SNES gamepads also use 5 wires, but have more buttons. They will work as well, of course. -Pinout for NES gamepads Pinout for SNES gamepads +Pinout for NES gamepads Pinout for SNES gamepads and mice +----> Power +-----------------------\ | 7 | o o o o | x x o | 1 @@ -454,6 +454,7 @@ uses the following kernel/module command line: 6 | N64 pad 7 | Sony PSX controller 8 | Sony PSX DDR controller + 9 | SNES mouse The exact type of the PSX controller type is autoprobed when used so hot swapping should work (but is not recomended). diff --git a/drivers/input/joystick/gamecon.c b/drivers/input/joystick/gamecon.c index aa3ef89d8188..ecbdb6b9bbd6 100644 --- a/drivers/input/joystick/gamecon.c +++ b/drivers/input/joystick/gamecon.c @@ -7,6 +7,7 @@ * Based on the work of: * Andree Borrmann John Dahlstrom * David Kuder Nathan Hand + * Raphael Assenat */ /* @@ -73,8 +74,9 @@ __obsolete_setup("gc_3="); #define GC_N64 6 #define GC_PSX 7 #define GC_DDR 8 +#define GC_SNESMOUSE 9 -#define GC_MAX 8 +#define GC_MAX 9 #define GC_REFRESH_TIME HZ/100 @@ -94,7 +96,7 @@ static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 }; static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick", "Multisystem 2-button joystick", "N64 controller", "PSX controller", - "PSX DDR controller" }; + "PSX DDR controller", "SNES mouse" }; /* * N64 support. */ @@ -206,9 +208,12 @@ static void gc_n64_process_packet(struct gc *gc) * NES/SNES support. */ -#define GC_NES_DELAY 6 /* Delay between bits - 6us */ -#define GC_NES_LENGTH 8 /* The NES pads use 8 bits of data */ -#define GC_SNES_LENGTH 12 /* The SNES true length is 16, but the last 4 bits are unused */ +#define GC_NES_DELAY 6 /* Delay between bits - 6us */ +#define GC_NES_LENGTH 8 /* The NES pads use 8 bits of data */ +#define GC_SNES_LENGTH 12 /* The SNES true length is 16, but the + last 4 bits are unused */ +#define GC_SNESMOUSE_LENGTH 32 /* The SNES mouse uses 32 bits, the first + 16 bits are equivalent to a gamepad */ #define GC_NES_POWER 0xfc #define GC_NES_CLOCK 0x01 @@ -243,11 +248,15 @@ static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data) static void gc_nes_process_packet(struct gc *gc) { - unsigned char data[GC_SNES_LENGTH]; + unsigned char data[GC_SNESMOUSE_LENGTH]; struct input_dev *dev; - int i, j, s; + int i, j, s, len; + char x_rel, y_rel; + + len = gc->pads[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH : + (gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH); - gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data); + gc_nes_read_packet(gc, len, data); for (i = 0; i < GC_MAX_DEVICES; i++) { @@ -270,6 +279,44 @@ static void gc_nes_process_packet(struct gc *gc) for (j = 0; j < 8; j++) input_report_key(dev, gc_snes_btn[j], s & data[gc_snes_bytes[j]]); + if (s & gc->pads[GC_SNESMOUSE]) { + /* + * The 4 unused bits from SNES controllers appear to be ID bits + * so use them to make sure iwe are dealing with a mouse. + * gamepad is connected. This is important since + * my SNES gamepad sends 1's for bits 16-31, which + * cause the mouse pointer to quickly move to the + * upper left corner of the screen. + */ + if (!(s & data[12]) && !(s & data[13]) && + !(s & data[14]) && (s & data[15])) { + input_report_key(dev, BTN_LEFT, s & data[9]); + input_report_key(dev, BTN_RIGHT, s & data[8]); + + x_rel = y_rel = 0; + for (j = 0; j < 7; j++) { + x_rel <<= 1; + if (data[25 + j] & s) + x_rel |= 1; + + y_rel <<= 1; + if (data[17 + j] & s) + y_rel |= 1; + } + + if (x_rel) { + if (data[24] & s) + x_rel = -x_rel; + input_report_rel(dev, REL_X, x_rel); + } + + if (y_rel) { + if (data[16] & s) + y_rel = -y_rel; + input_report_rel(dev, REL_Y, y_rel); + } + } + } input_sync(dev); } } @@ -525,10 +572,10 @@ static void gc_timer(unsigned long private) gc_n64_process_packet(gc); /* - * NES and SNES pads + * NES and SNES pads or mouse */ - if (gc->pads[GC_NES] || gc->pads[GC_SNES]) + if (gc->pads[GC_NES] || gc->pads[GC_SNES] || gc->pads[GC_SNESMOUSE]) gc_nes_process_packet(gc); /* @@ -610,10 +657,13 @@ static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type) input_dev->open = gc_open; input_dev->close = gc_close; - input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); + if (pad_type != GC_SNESMOUSE) { + input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); - for (i = 0; i < 2; i++) - input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0); + for (i = 0; i < 2; i++) + input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0); + } else + input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); gc->pads[0] |= gc_status_bit[idx]; gc->pads[pad_type] |= gc_status_bit[idx]; @@ -631,6 +681,13 @@ static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type) break; + case GC_SNESMOUSE: + set_bit(BTN_LEFT, input_dev->keybit); + set_bit(BTN_RIGHT, input_dev->keybit); + set_bit(REL_X, input_dev->relbit); + set_bit(REL_Y, input_dev->relbit); + break; + case GC_SNES: for (i = 4; i < 8; i++) set_bit(gc_snes_btn[i], input_dev->keybit); |