diff --git a/Makefile b/Makefile
index 69a20e48d6..6883c37850 100644
--- a/Makefile
+++ b/Makefile
@@ -121,6 +121,11 @@ $(OBJDIR)/tools/linuxraw_joypad.o: input/linuxraw_joypad.c
@$(if $(Q), $(shell echo echo CC $<),)
$(Q)$(CC) $(CFLAGS) $(DEFINES) -MMD -DIS_JOYCONFIG -c -o $@ $<
+$(OBJDIR)/tools/parport_joypad.o: input/parport_joypad.c
+ @mkdir -p $(dir $@)
+ @$(if $(Q), $(shell echo echo CC $<),)
+ $(Q)$(CC) $(CFLAGS) $(DEFINES) -MMD -DIS_JOYCONFIG -c -o $@ $<
+
$(OBJDIR)/tools/udev_joypad.o: input/udev_joypad.c
@mkdir -p $(dir $@)
@$(if $(Q), $(shell echo echo CC $<),)
diff --git a/Makefile.common b/Makefile.common
index 40f6e197ab..825291691d 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -336,6 +336,10 @@ ifeq ($(HAVE_UDEV), 1)
JOYCONFIG_OBJ += tools/udev_joypad.o
endif
+ifeq ($(HAVE_PARPORT), 1)
+ OBJ += input/parport_joypad.o
+ JOYCONFIG_OBJ += tools/parport_joypad.o
+endif
# Video
#
diff --git a/input/input_common.c b/input/input_common.c
index ff2d2ec42e..3677ed059f 100644
--- a/input/input_common.c
+++ b/input/input_common.c
@@ -76,6 +76,9 @@ rarch_joypad_driver_t *joypad_drivers[] = {
#if defined(__linux) && !defined(ANDROID)
&linuxraw_joypad,
#endif
+#ifdef HAVE_PARPORT
+ &parport_joypad,
+#endif
#ifdef ANDROID
&android_joypad,
#endif
diff --git a/input/input_common.h b/input/input_common.h
index 58e740babf..89d44b3b3c 100644
--- a/input/input_common.h
+++ b/input/input_common.h
@@ -127,6 +127,7 @@ const char *input_joypad_name(const rarch_joypad_driver_t *driver,
extern rarch_joypad_driver_t dinput_joypad;
extern rarch_joypad_driver_t linuxraw_joypad;
+extern rarch_joypad_driver_t parport_joypad;
extern rarch_joypad_driver_t udev_joypad;
extern rarch_joypad_driver_t winxinput_joypad;
extern rarch_joypad_driver_t sdl_joypad;
diff --git a/input/parport_joypad.c b/input/parport_joypad.c
new file mode 100644
index 0000000000..ef8430dbba
--- /dev/null
+++ b/input/parport_joypad.c
@@ -0,0 +1,348 @@
+/* RetroArch - A frontend for libretro.
+ * Copyright (C) 2010-2014 - Hans-Kristian Arntzen
+ * Copyright (C) 2014 - Mike Robinson
+ *
+ * RetroArch is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Found-
+ * ation, either version 3 of the License, or (at your option) any later version.
+ *
+ * RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with RetroArch.
+ * If not, see .
+ */
+
+#include "input_common.h"
+#include "../general.h"
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+/* Linux parport driver does not support reading the control register
+ Other platforms may support up to 17 buttons */
+#define NUM_BUTTONS 13
+
+struct parport_joypad
+{
+ int fd;
+ bool buttons[NUM_BUTTONS];
+ bool button_enable[NUM_BUTTONS];
+ char saved_data;
+ char saved_control;
+ char *ident;
+};
+
+static struct parport_joypad g_pads[MAX_PLAYERS];
+
+static void poll_pad(struct parport_joypad *pad)
+{
+ /* RetroArch uses an extended version of the Linux
+ * Multisystem 2-button joystick protocol for parallel port
+ * joypads:
+ *
+ * | Function | Pin | Register | Bit | Active |
+ * |-------------|-----|----------|-----|--------|
+ * | Up | 2 | Data | 0 | Low |
+ * | Down | 3 | Data | 1 | Low |
+ * | Left | 4 | Data | 2 | Low |
+ * | Right | 5 | Data | 3 | Low |
+ * | A | 6 | Data | 4 | Low |
+ * | B | 7 | Data | 5 | Low |
+ * | Start | 8 | Data | 6 | Low |
+ * | Select | 9 | Data | 7 | Low |
+ * | Menu toggle | 10 | Status | 6 | Low |
+ * | X | 11 | Status | 7 | Low* |
+ * | Y | 12 | Status | 5 | Low |
+ * | L1 | 13 | Status | 4 | Low |
+ * | R1 | 15 | Status | 3 | Low |
+ *
+ * (*) Pin is hardware inverted, but RetroArch inverts it
+ * back again so the same pullup scheme may be used for
+ * all pins.
+ *
+ * Pin 1 is set high so it can be used for pullups.
+ *
+ * RetroArch does not perform debouncing, and so long as
+ * the button settling time is less than the frame time
+ * no bouncing will be observed. This replicates the latching
+ * behavior common in old games consoles. For optimum latency
+ * and jitter a high performance debouncing routine should be
+ * implemented in the controller hardware.
+ */
+
+ int i;
+ char data;
+ char status;
+
+ ioctl(pad->fd, PPRDATA, &data);
+ ioctl(pad->fd, PPRSTATUS, &status);
+
+ for (i = 0; i < 8; i++)
+ {
+ pad->buttons[i] = !(data & UINT8_C(1 << i)) && pad->button_enable[i];
+ }
+ for (i = 3; i < 8; i++)
+ {
+ pad->buttons[i + 5] = !(status & UINT8_C(1 << i)) && pad->button_enable[i + 5];
+ }
+ pad->buttons[12] = pad->buttons[12] ? false : true && pad->button_enable[12];
+}
+
+static bool parport_joypad_init_pad(const char *path, struct parport_joypad *pad)
+{
+ int datadir = 1; /* read */
+ char data;
+ struct ppdev_frob_struct frob;
+ bool set_control = false;
+ int i;
+
+ int mode = IEEE1284_MODE_BYTE;
+
+ if (pad->fd >= 0)
+ return false;
+
+ if (access(path, R_OK | W_OK) < 0)
+ return false;
+
+ pad->fd = open(path, O_RDWR);
+
+ *pad->ident = '\0';
+ if (pad->fd >= 0)
+ {
+ RARCH_LOG("[Joypad]: Found parallel port: %s\n", path);
+
+ /* Parport driver does not log failures with RARCH_ERR because they could be
+ * a normal result of connected non-joypad devices. */
+ if (ioctl(pad->fd, PPCLAIM) < 0)
+ {
+ RARCH_WARN("[Joypad]: Failed to claim %s\n", path);
+ goto error;
+ }
+ if (ioctl(pad->fd, PPSETMODE, &mode) < 0)
+ {
+ RARCH_WARN("[Joypad]: Failed to set byte mode on %s\n", path);
+ goto error;
+ }
+ if (ioctl(pad->fd, PPDATADIR, &datadir) < 0)
+ {
+ RARCH_WARN("[Joypad]: Failed to set data direction to input on %s\n", path);
+ goto error;
+ }
+
+ if (ioctl(pad->fd, PPRDATA, &data) < 0)
+ {
+ RARCH_WARN("[Joypad]: Failed to save original data register on %s\n", path);
+ goto error;
+ }
+ pad->saved_data = data;
+
+ if (ioctl(pad->fd, PPRCONTROL, &data) == 0)
+ {
+ pad->saved_control = data;
+ /* Clear strobe bit to set strobe high for pullup +V */
+ /* Clear control bit 4 to disable interrupts */
+ frob.mask = PARPORT_CONTROL_STROBE | (UINT8_C(1 << 4));
+ frob.val = 0;
+ if (ioctl(pad->fd, PPFCONTROL, &frob) == 0)
+ set_control = true;
+ }
+ else
+ {
+ data = pad->saved_data;
+ if (ioctl(pad->fd, PPWDATA, &data) < 0)
+ RARCH_WARN("[Joypad]: Failed to restore original data register on %s\n", path);
+ RARCH_WARN("[Joypad]: Failed to save original control register on %s\n", path);
+ goto error;
+ }
+
+ /* Failure to enable strobe can break Linux Multisystem style controllers.
+ * Controllers using an alternative power source will still work.
+ * Failure to disable interrupts slightly increases CPU usage. */
+ if (!set_control)
+ RARCH_WARN("[Joypad]: Failed to clear nStrobe and nIRQ bits on %s\n", path);
+
+ strlcpy(pad->ident, path, sizeof(g_settings.input.device_names[0]));
+
+ for (i = 0; i < NUM_BUTTONS; i++)
+ pad->button_enable[i] = true;
+
+ return true;
+error:
+ close(pad->fd);
+ pad->fd = 0;
+ return false;
+ }
+
+ RARCH_WARN("[Joypad]: Failed to open parallel port %s (error: %s).\n", path, strerror(errno));
+ return false;
+}
+
+static void parport_joypad_poll(void)
+{
+ int i;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ if (g_pads[i].fd >= 0)
+ {
+ poll_pad(&g_pads[i]);
+ }
+ }
+}
+
+static void destroy_pad(struct parport_joypad *pad)
+{
+ char data;
+ data = pad->saved_data;
+ if (ioctl(pad->fd, PPWDATA, &data) < 0)
+ RARCH_ERR("[Joypad]: Failed to restore original data register on %s\n", pad->ident);
+
+ data = pad->saved_control;
+ if (ioctl(pad->fd, PPWDATA, &data) < 0)
+ RARCH_ERR("[Joypad]: Failed to restore original control register on %s\n", pad->ident);
+
+ if (ioctl(pad->fd, PPRELEASE) < 0)
+ RARCH_ERR("[Joypad]: Failed to release parallel port %s\n", pad->ident);
+
+ close(pad->fd);
+ pad->fd = -1;
+}
+
+static bool parport_joypad_init(void)
+{
+ unsigned i, j;
+ bool found_enabled_button;
+ bool found_disabled_button;
+ char buf[NUM_BUTTONS * 3 + 1];
+ char pin[3 + 1];
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ struct parport_joypad *pad = &g_pads[i];
+ pad->fd = -1;
+ pad->ident = g_settings.input.device_names[i];
+
+ char path[PATH_MAX];
+ snprintf(path, sizeof(path), "/dev/parport%u", i);
+
+ if (parport_joypad_init_pad(path, pad))
+ {
+ /* If a pin is low on initialization it can either mean
+ * a button is pressed or that nothing is connected.
+ * Polling non-connected pins can render the menu unusable
+ * so assume the user is not holding any button on startup
+ * and disable any low pins.
+ */
+ poll_pad(pad);
+ found_enabled_button = false;
+ found_disabled_button = false;
+
+ for (j = 0; j < NUM_BUTTONS; j++)
+ {
+ if (!pad->buttons[j])
+ {
+ pad->button_enable[j] = true;
+ found_enabled_button = true;
+ }
+ else
+ {
+ pad->button_enable[j] = false;
+ found_disabled_button = true;
+ }
+ }
+
+ if (found_enabled_button)
+ {
+ if (found_disabled_button)
+ {
+ buf[0] = '\0';
+ for (j = 0; j < NUM_BUTTONS; j++)
+ {
+ if (!pad->button_enable[j])
+ {
+ snprintf(pin, sizeof(pin), "%d ", j);
+ strlcat(buf, pin, sizeof(buf));
+ }
+ }
+ RARCH_WARN("[Joypad]: Pin(s) %son %s were low on init, assuming not connected\n", \
+ buf, path);
+ }
+ input_config_autoconfigure_joypad(i, "Generic Parallel Port device", 0, 0, "parport");
+ }
+ else
+ {
+ RARCH_WARN("[Joypad]: All pins low on %s, assuming nothing connected\n", path);
+ destroy_pad(pad);
+ input_config_autoconfigure_joypad(i, NULL, 0, 0, NULL);
+ }
+ }
+ else
+ input_config_autoconfigure_joypad(i, NULL, 0, 0, NULL);
+ }
+
+ return true;
+}
+
+static void parport_joypad_destroy(void)
+{
+ unsigned i;
+ struct parport_joypad *pad;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ {
+ pad = &g_pads[i];
+ if (pad->fd >= 0)
+ {
+ destroy_pad(pad);
+ }
+ }
+ memset(g_pads, 0, sizeof(g_pads));
+ for (i = 0; i < MAX_PLAYERS; i++)
+ g_pads[i].fd = -1;
+}
+
+static bool parport_joypad_button(unsigned port, uint16_t joykey)
+{
+ const struct parport_joypad *pad = &g_pads[port];
+
+ return joykey < NUM_BUTTONS && pad->buttons[joykey];
+}
+
+static int16_t parport_joypad_axis(unsigned port, uint32_t joyaxis)
+{
+ /* Parport does not support analog sticks */
+ return 0;
+}
+
+static bool parport_joypad_query_pad(unsigned pad)
+{
+ return pad < MAX_PLAYERS && g_pads[pad].fd >= 0;
+}
+
+static const char *parport_joypad_name(unsigned pad)
+{
+ if (pad >= MAX_PLAYERS)
+ return NULL;
+
+ return *g_pads[pad].ident ? g_pads[pad].ident : NULL;
+}
+
+rarch_joypad_driver_t parport_joypad = {
+ parport_joypad_init,
+ parport_joypad_query_pad,
+ parport_joypad_destroy,
+ parport_joypad_button,
+ parport_joypad_axis,
+ parport_joypad_poll,
+ NULL,
+ parport_joypad_name,
+ "parport",
+};
diff --git a/qb/config.libs.sh b/qb/config.libs.sh
index 6f58ad53d8..f84a3aaddf 100644
--- a/qb/config.libs.sh
+++ b/qb/config.libs.sh
@@ -324,6 +324,9 @@ if [ "$HAVE_UDEV" != "no" ]; then
fi
fi
+check_header PARPORT linux/parport.h
+check_header PARPORT linux/ppdev.h
+
check_lib STRL "$CLIB" strlcpy
check_lib STRCASESTR "$CLIB" strcasestr
check_lib MMAP "$CLIB" mmap
@@ -336,6 +339,6 @@ add_define_make OS "$OS"
# Creates config.mk and config.h.
add_define_make GLOBAL_CONFIG_DIR "$GLOBAL_CONFIG_DIR"
-VARS="RGUI LAKKA GLUI ALSA OSS OSS_BSD OSS_LIB AL RSOUND ROAR JACK COREAUDIO PULSE SDL SDL2 D3D9 DINPUT WINXINPUT DSOUND XAUDIO OPENGL LIMA OMAP GLES GLES3 VG EGL KMS GBM DRM DYLIB GETOPT_LONG THREADS CG LIBXML2 ZLIB DYNAMIC FFMPEG AVCODEC AVFORMAT AVUTIL SWSCALE FREETYPE XKBCOMMON XVIDEO X11 XEXT XF86VM XINERAMA WAYLAND MALI_FBDEV VIVANTE_FBDEV NETPLAY NETWORK_CMD STDIN_CMD COMMAND SOCKET_LEGACY FBO STRL STRCASESTR MMAP PYTHON FFMPEG_ALLOC_CONTEXT3 FFMPEG_AVCODEC_OPEN2 FFMPEG_AVIO_OPEN FFMPEG_AVFORMAT_WRITE_HEADER FFMPEG_AVFORMAT_NEW_STREAM FFMPEG_AVCODEC_ENCODE_AUDIO2 FFMPEG_AVCODEC_ENCODE_VIDEO2 BSV_MOVIE VIDEOCORE NEON FLOATHARD FLOATSOFTFP UDEV V4L2 AV_CHANNEL_LAYOUT 7ZIP"
+VARS="RGUI LAKKA GLUI ALSA OSS OSS_BSD OSS_LIB AL RSOUND ROAR JACK COREAUDIO PULSE SDL SDL2 D3D9 DINPUT WINXINPUT DSOUND XAUDIO OPENGL LIMA OMAP GLES GLES3 VG EGL KMS GBM DRM DYLIB GETOPT_LONG THREADS CG LIBXML2 ZLIB DYNAMIC FFMPEG AVCODEC AVFORMAT AVUTIL SWSCALE FREETYPE XKBCOMMON XVIDEO X11 XEXT XF86VM XINERAMA WAYLAND MALI_FBDEV VIVANTE_FBDEV NETPLAY NETWORK_CMD STDIN_CMD COMMAND SOCKET_LEGACY FBO STRL STRCASESTR MMAP PYTHON FFMPEG_ALLOC_CONTEXT3 FFMPEG_AVCODEC_OPEN2 FFMPEG_AVIO_OPEN FFMPEG_AVFORMAT_WRITE_HEADER FFMPEG_AVFORMAT_NEW_STREAM FFMPEG_AVCODEC_ENCODE_AUDIO2 FFMPEG_AVCODEC_ENCODE_VIDEO2 BSV_MOVIE VIDEOCORE NEON FLOATHARD FLOATSOFTFP UDEV V4L2 AV_CHANNEL_LAYOUT 7ZIP PARPORT"
create_config_make config.mk $VARS
create_config_header config.h $VARS
diff --git a/qb/config.params.sh b/qb/config.params.sh
index 523da197d2..897b3173c8 100644
--- a/qb/config.params.sh
+++ b/qb/config.params.sh
@@ -47,3 +47,4 @@ HAVE_FLOATHARD=no # Force hard float ABI (for ARM)
HAVE_FLOATSOFTFP=no # Force soft float ABI (for ARM)
HAVE_7ZIP=yes # Compile in 7z support
HAVE_PRESERVE_DYLIB=no # Disable dlclose() for Valgrind support
+HAVE_PARPORT=auto # Parallel port joypad support