diff options
author | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-25 02:46:49 +0200 |
---|---|---|
committer | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-25 02:46:49 +0200 |
commit | 549367162dfdc75d573f74f4e2891f2dba41582f (patch) | |
tree | 7f95551ed7b4f3e4289dbbfac689f5728616f3f1 /samples | |
parent | 328aa7a45af61bc0060c80847daa67fef7b9c0d0 (diff) | |
download | kernel_samsung_smdk4412-549367162dfdc75d573f74f4e2891f2dba41582f.zip kernel_samsung_smdk4412-549367162dfdc75d573f74f4e2891f2dba41582f.tar.gz kernel_samsung_smdk4412-549367162dfdc75d573f74f4e2891f2dba41582f.tar.bz2 |
remove galaxys2 initramsfs files and busybox binary, get sound merged with 3.0.101 (samsung code untouched), remove compat, scripts and security merged
Diffstat (limited to 'samples')
-rw-r--r-- | samples/uhid/Makefile | 10 | ||||
-rw-r--r-- | samples/uhid/uhid-example.c | 381 |
2 files changed, 0 insertions, 391 deletions
diff --git a/samples/uhid/Makefile b/samples/uhid/Makefile deleted file mode 100644 index c95a696..0000000 --- a/samples/uhid/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# kbuild trick to avoid linker error. Can be omitted if a module is built. -obj- := dummy.o - -# List of programs to build -hostprogs-y := uhid-example - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_uhid-example.o += -I$(objtree)/usr/include diff --git a/samples/uhid/uhid-example.c b/samples/uhid/uhid-example.c deleted file mode 100644 index 03ce3c0..0000000 --- a/samples/uhid/uhid-example.c +++ /dev/null @@ -1,381 +0,0 @@ -/* - * UHID Example - * - * Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com> - * - * The code may be used by anyone for any purpose, - * and can serve as a starting point for developing - * applications using uhid. - */ - -/* UHID Example - * This example emulates a basic 3 buttons mouse with wheel over UHID. Run this - * program as root and then use the following keys to control the mouse: - * q: Quit the application - * 1: Toggle left button (down, up, ...) - * 2: Toggle right button - * 3: Toggle middle button - * a: Move mouse left - * d: Move mouse right - * w: Move mouse up - * s: Move mouse down - * r: Move wheel up - * f: Move wheel down - * - * If uhid is not available as /dev/uhid, then you can pass a different path as - * first argument. - * If <linux/uhid.h> is not installed in /usr, then compile this with: - * gcc -o ./uhid_test -Wall -I./include ./samples/uhid/uhid-example.c - * And ignore the warning about kernel headers. However, it is recommended to - * use the installed uhid.h if available. - */ - -#include <errno.h> -#include <fcntl.h> -#include <poll.h> -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <termios.h> -#include <unistd.h> -#include <linux/uhid.h> - -/* HID Report Desciptor - * We emulate a basic 3 button mouse with wheel. This is the report-descriptor - * as the kernel will parse it: - * - * INPUT[INPUT] - * Field(0) - * Physical(GenericDesktop.Pointer) - * Application(GenericDesktop.Mouse) - * Usage(3) - * Button.0001 - * Button.0002 - * Button.0003 - * Logical Minimum(0) - * Logical Maximum(1) - * Report Size(1) - * Report Count(3) - * Report Offset(0) - * Flags( Variable Absolute ) - * Field(1) - * Physical(GenericDesktop.Pointer) - * Application(GenericDesktop.Mouse) - * Usage(3) - * GenericDesktop.X - * GenericDesktop.Y - * GenericDesktop.Wheel - * Logical Minimum(-128) - * Logical Maximum(127) - * Report Size(8) - * Report Count(3) - * Report Offset(8) - * Flags( Variable Relative ) - * - * This is the mapping that we expect: - * Button.0001 ---> Key.LeftBtn - * Button.0002 ---> Key.RightBtn - * Button.0003 ---> Key.MiddleBtn - * GenericDesktop.X ---> Relative.X - * GenericDesktop.Y ---> Relative.Y - * GenericDesktop.Wheel ---> Relative.Wheel - * - * This information can be verified by reading /sys/kernel/debug/hid/<dev>/rdesc - * This file should print the same information as showed above. - */ - -static unsigned char rdesc[] = { - 0x05, 0x01, 0x09, 0x02, 0xa1, 0x01, 0x09, 0x01, - 0xa1, 0x00, 0x05, 0x09, 0x19, 0x01, 0x29, 0x03, - 0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 0x01, - 0x81, 0x02, 0x95, 0x01, 0x75, 0x05, 0x81, 0x01, - 0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 0x09, 0x38, - 0x15, 0x80, 0x25, 0x7f, 0x75, 0x08, 0x95, 0x03, - 0x81, 0x06, 0xc0, 0xc0, -}; - -static int uhid_write(int fd, const struct uhid_event *ev) -{ - ssize_t ret; - - ret = write(fd, ev, sizeof(*ev)); - if (ret < 0) { - fprintf(stderr, "Cannot write to uhid: %m\n"); - return -errno; - } else if (ret != sizeof(*ev)) { - fprintf(stderr, "Wrong size written to uhid: %ld != %lu\n", - ret, sizeof(ev)); - return -EFAULT; - } else { - return 0; - } -} - -static int create(int fd) -{ - struct uhid_event ev; - - memset(&ev, 0, sizeof(ev)); - ev.type = UHID_CREATE; - strcpy((char*)ev.u.create.name, "test-uhid-device"); - ev.u.create.rd_data = rdesc; - ev.u.create.rd_size = sizeof(rdesc); - ev.u.create.bus = BUS_USB; - ev.u.create.vendor = 0x15d9; - ev.u.create.product = 0x0a37; - ev.u.create.version = 0; - ev.u.create.country = 0; - - return uhid_write(fd, &ev); -} - -static void destroy(int fd) -{ - struct uhid_event ev; - - memset(&ev, 0, sizeof(ev)); - ev.type = UHID_DESTROY; - - uhid_write(fd, &ev); -} - -static int event(int fd) -{ - struct uhid_event ev; - ssize_t ret; - - memset(&ev, 0, sizeof(ev)); - ret = read(fd, &ev, sizeof(ev)); - if (ret == 0) { - fprintf(stderr, "Read HUP on uhid-cdev\n"); - return -EFAULT; - } else if (ret < 0) { - fprintf(stderr, "Cannot read uhid-cdev: %m\n"); - return -errno; - } else if (ret != sizeof(ev)) { - fprintf(stderr, "Invalid size read from uhid-dev: %ld != %lu\n", - ret, sizeof(ev)); - return -EFAULT; - } - - switch (ev.type) { - case UHID_START: - fprintf(stderr, "UHID_START from uhid-dev\n"); - break; - case UHID_STOP: - fprintf(stderr, "UHID_STOP from uhid-dev\n"); - break; - case UHID_OPEN: - fprintf(stderr, "UHID_OPEN from uhid-dev\n"); - break; - case UHID_CLOSE: - fprintf(stderr, "UHID_CLOSE from uhid-dev\n"); - break; - case UHID_OUTPUT: - fprintf(stderr, "UHID_OUTPUT from uhid-dev\n"); - break; - case UHID_OUTPUT_EV: - fprintf(stderr, "UHID_OUTPUT_EV from uhid-dev\n"); - break; - default: - fprintf(stderr, "Invalid event from uhid-dev: %u\n", ev.type); - } - - return 0; -} - -static bool btn1_down; -static bool btn2_down; -static bool btn3_down; -static signed char abs_hor; -static signed char abs_ver; -static signed char wheel; - -static int send_event(int fd) -{ - struct uhid_event ev; - - memset(&ev, 0, sizeof(ev)); - ev.type = UHID_INPUT; - ev.u.input.size = 4; - - if (btn1_down) - ev.u.input.data[0] |= 0x1; - if (btn2_down) - ev.u.input.data[0] |= 0x2; - if (btn3_down) - ev.u.input.data[0] |= 0x4; - - ev.u.input.data[1] = abs_hor; - ev.u.input.data[2] = abs_ver; - ev.u.input.data[3] = wheel; - - return uhid_write(fd, &ev); -} - -static int keyboard(int fd) -{ - char buf[128]; - ssize_t ret, i; - - ret = read(STDIN_FILENO, buf, sizeof(buf)); - if (ret == 0) { - fprintf(stderr, "Read HUP on stdin\n"); - return -EFAULT; - } else if (ret < 0) { - fprintf(stderr, "Cannot read stdin: %m\n"); - return -errno; - } - - for (i = 0; i < ret; ++i) { - switch (buf[i]) { - case '1': - btn1_down = !btn1_down; - ret = send_event(fd); - if (ret) - return ret; - break; - case '2': - btn2_down = !btn2_down; - ret = send_event(fd); - if (ret) - return ret; - break; - case '3': - btn3_down = !btn3_down; - ret = send_event(fd); - if (ret) - return ret; - break; - case 'a': - abs_hor = -20; - ret = send_event(fd); - abs_hor = 0; - if (ret) - return ret; - break; - case 'd': - abs_hor = 20; - ret = send_event(fd); - abs_hor = 0; - if (ret) - return ret; - break; - case 'w': - abs_ver = -20; - ret = send_event(fd); - abs_ver = 0; - if (ret) - return ret; - break; - case 's': - abs_ver = 20; - ret = send_event(fd); - abs_ver = 0; - if (ret) - return ret; - break; - case 'r': - wheel = 1; - ret = send_event(fd); - wheel = 0; - if (ret) - return ret; - break; - case 'f': - wheel = -1; - ret = send_event(fd); - wheel = 0; - if (ret) - return ret; - break; - case 'q': - return -ECANCELED; - default: - fprintf(stderr, "Invalid input: %c\n", buf[i]); - } - } - - return 0; -} - -int main(int argc, char **argv) -{ - int fd; - const char *path = "/dev/uhid"; - struct pollfd pfds[2]; - int ret; - struct termios state; - - ret = tcgetattr(STDIN_FILENO, &state); - if (ret) { - fprintf(stderr, "Cannot get tty state\n"); - } else { - state.c_lflag &= ~ICANON; - state.c_cc[VMIN] = 1; - ret = tcsetattr(STDIN_FILENO, TCSANOW, &state); - if (ret) - fprintf(stderr, "Cannot set tty state\n"); - } - - if (argc >= 2) { - if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) { - fprintf(stderr, "Usage: %s [%s]\n", argv[0], path); - return EXIT_SUCCESS; - } else { - path = argv[1]; - } - } - - fprintf(stderr, "Open uhid-cdev %s\n", path); - fd = open(path, O_RDWR | O_CLOEXEC); - if (fd < 0) { - fprintf(stderr, "Cannot open uhid-cdev %s: %m\n", path); - return EXIT_FAILURE; - } - - fprintf(stderr, "Create uhid device\n"); - ret = create(fd); - if (ret) { - close(fd); - return EXIT_FAILURE; - } - - pfds[0].fd = STDIN_FILENO; - pfds[0].events = POLLIN; - pfds[1].fd = fd; - pfds[1].events = POLLIN; - - fprintf(stderr, "Press 'q' to quit...\n"); - while (1) { - ret = poll(pfds, 2, -1); - if (ret < 0) { - fprintf(stderr, "Cannot poll for fds: %m\n"); - break; - } - if (pfds[0].revents & POLLHUP) { - fprintf(stderr, "Received HUP on stdin\n"); - break; - } - if (pfds[1].revents & POLLHUP) { - fprintf(stderr, "Received HUP on uhid-cdev\n"); - break; - } - - if (pfds[0].revents & POLLIN) { - ret = keyboard(fd); - if (ret) - break; - } - if (pfds[1].revents & POLLIN) { - ret = event(fd); - if (ret) - break; - } - } - - fprintf(stderr, "Destroy uhid device\n"); - destroy(fd); - return EXIT_SUCCESS; -} |