diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/Makefile | 2 | ||||
| -rw-r--r-- | Documentation/spi/Makefile | 8 | ||||
| -rw-r--r-- | Documentation/spi/spidev_fdx.c | 158 | ||||
| -rw-r--r-- | Documentation/spi/spidev_test.c | 318 |
4 files changed, 1 insertions, 485 deletions
diff --git a/Documentation/Makefile b/Documentation/Makefile index bc0548201755..1207d7907650 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -1,4 +1,4 @@ subdir-y := accounting auxdisplay blackfin connector \ filesystems filesystems ia64 laptops mic misc-devices \ - networking pcmcia prctl ptp spi timers vDSO video4linux \ + networking pcmcia prctl ptp timers vDSO video4linux \ watchdog diff --git a/Documentation/spi/Makefile b/Documentation/spi/Makefile deleted file mode 100644 index efa255813e9d..000000000000 --- a/Documentation/spi/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# List of programs to build -hostprogs-y := spidev_test spidev_fdx - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_spidev_test.o += -I$(objtree)/usr/include -HOSTCFLAGS_spidev_fdx.o += -I$(objtree)/usr/include diff --git a/Documentation/spi/spidev_fdx.c b/Documentation/spi/spidev_fdx.c deleted file mode 100644 index 0ea3e51292fc..000000000000 --- a/Documentation/spi/spidev_fdx.c +++ /dev/null @@ -1,158 +0,0 @@ -#include <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <fcntl.h> -#include <string.h> - -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/stat.h> - -#include <linux/types.h> -#include <linux/spi/spidev.h> - - -static int verbose; - -static void do_read(int fd, int len) -{ - unsigned char buf[32], *bp; - int status; - - /* read at least 2 bytes, no more than 32 */ - if (len < 2) - len = 2; - else if (len > sizeof(buf)) - len = sizeof(buf); - memset(buf, 0, sizeof buf); - - status = read(fd, buf, len); - if (status < 0) { - perror("read"); - return; - } - if (status != len) { - fprintf(stderr, "short read\n"); - return; - } - - printf("read(%2d, %2d): %02x %02x,", len, status, - buf[0], buf[1]); - status -= 2; - bp = buf + 2; - while (status-- > 0) - printf(" %02x", *bp++); - printf("\n"); -} - -static void do_msg(int fd, int len) -{ - struct spi_ioc_transfer xfer[2]; - unsigned char buf[32], *bp; - int status; - - memset(xfer, 0, sizeof xfer); - memset(buf, 0, sizeof buf); - - if (len > sizeof buf) - len = sizeof buf; - - buf[0] = 0xaa; - xfer[0].tx_buf = (unsigned long)buf; - xfer[0].len = 1; - - xfer[1].rx_buf = (unsigned long) buf; - xfer[1].len = len; - - status = ioctl(fd, SPI_IOC_MESSAGE(2), xfer); - if (status < 0) { - perror("SPI_IOC_MESSAGE"); - return; - } - - printf("response(%2d, %2d): ", len, status); - for (bp = buf; len; len--) - printf(" %02x", *bp++); - printf("\n"); -} - -static void dumpstat(const char *name, int fd) -{ - __u8 lsb, bits; - __u32 mode, speed; - - if (ioctl(fd, SPI_IOC_RD_MODE32, &mode) < 0) { - perror("SPI rd_mode"); - return; - } - if (ioctl(fd, SPI_IOC_RD_LSB_FIRST, &lsb) < 0) { - perror("SPI rd_lsb_fist"); - return; - } - if (ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits) < 0) { - perror("SPI bits_per_word"); - return; - } - if (ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed) < 0) { - perror("SPI max_speed_hz"); - return; - } - - printf("%s: spi mode 0x%x, %d bits %sper word, %d Hz max\n", - name, mode, bits, lsb ? "(lsb first) " : "", speed); -} - -int main(int argc, char **argv) -{ - int c; - int readcount = 0; - int msglen = 0; - int fd; - const char *name; - - while ((c = getopt(argc, argv, "hm:r:v")) != EOF) { - switch (c) { - case 'm': - msglen = atoi(optarg); - if (msglen < 0) - goto usage; - continue; - case 'r': - readcount = atoi(optarg); - if (readcount < 0) - goto usage; - continue; - case 'v': - verbose++; - continue; - case 'h': - case '?': -usage: - fprintf(stderr, - "usage: %s [-h] [-m N] [-r N] /dev/spidevB.D\n", - argv[0]); - return 1; - } - } - - if ((optind + 1) != argc) - goto usage; - name = argv[optind]; - - fd = open(name, O_RDWR); - if (fd < 0) { - perror("open"); - return 1; - } - - dumpstat(name, fd); - - if (msglen) - do_msg(fd, msglen); - - if (readcount) - do_read(fd, readcount); - - close(fd); - return 0; -} diff --git a/Documentation/spi/spidev_test.c b/Documentation/spi/spidev_test.c deleted file mode 100644 index 135b3f592b83..000000000000 --- a/Documentation/spi/spidev_test.c +++ /dev/null @@ -1,318 +0,0 @@ -/* - * SPI testing utility (using spidev driver) - * - * Copyright (c) 2007 MontaVista Software, Inc. - * Copyright (c) 2007 Anton Vorontsov <avorontsov@ru.mvista.com> - * - * This program 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 Foundation; either version 2 of the License. - * - * Cross-compile with cross-gcc -I/path/to/cross-kernel/include - */ - -#include <stdint.h> -#include <unistd.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <getopt.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include <linux/types.h> -#include <linux/spi/spidev.h> - -#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) - -static void pabort(const char *s) -{ - perror(s); - abort(); -} - -static const char *device = "/dev/spidev1.1"; -static uint32_t mode; -static uint8_t bits = 8; -static uint32_t speed = 500000; -static uint16_t delay; -static int verbose; - -uint8_t default_tx[] = { - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0x40, 0x00, 0x00, 0x00, 0x00, 0x95, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xF0, 0x0D, -}; - -uint8_t default_rx[ARRAY_SIZE(default_tx)] = {0, }; -char *input_tx; - -static void hex_dump(const void *src, size_t length, size_t line_size, char *prefix) -{ - int i = 0; - const unsigned char *address = src; - const unsigned char *line = address; - unsigned char c; - - printf("%s | ", prefix); - while (length-- > 0) { - printf("%02X ", *address++); - if (!(++i % line_size) || (length == 0 && i % line_size)) { - if (length == 0) { - while (i++ % line_size) - printf("__ "); - } - printf(" | "); /* right close */ - while (line < address) { - c = *line++; - printf("%c", (c < 33 || c == 255) ? 0x2E : c); - } - printf("\n"); - if (length > 0) - printf("%s | ", prefix); - } - } -} - -/* - * Unescape - process hexadecimal escape character - * converts shell input "\x23" -> 0x23 - */ -static int unescape(char *_dst, char *_src, size_t len) -{ - int ret = 0; - char *src = _src; - char *dst = _dst; - unsigned int ch; - - while (*src) { - if (*src == '\\' && *(src+1) == 'x') { - sscanf(src + 2, "%2x", &ch); - src += 4; - *dst++ = (unsigned char)ch; - } else { - *dst++ = *src++; - } - ret++; - } - return ret; -} - -static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len) -{ - int ret; - - struct spi_ioc_transfer tr = { - .tx_buf = (unsigned long)tx, - .rx_buf = (unsigned long)rx, - .len = len, - .delay_usecs = delay, - .speed_hz = speed, - .bits_per_word = bits, - }; - - if (mode & SPI_TX_QUAD) - tr.tx_nbits = 4; - else if (mode & SPI_TX_DUAL) - tr.tx_nbits = 2; - if (mode & SPI_RX_QUAD) - tr.rx_nbits = 4; - else if (mode & SPI_RX_DUAL) - tr.rx_nbits = 2; - if (!(mode & SPI_LOOP)) { - if (mode & (SPI_TX_QUAD | SPI_TX_DUAL)) - tr.rx_buf = 0; - else if (mode & (SPI_RX_QUAD | SPI_RX_DUAL)) - tr.tx_buf = 0; - } - - ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); - if (ret < 1) - pabort("can't send spi message"); - - if (verbose) - hex_dump(tx, len, 32, "TX"); - hex_dump(rx, len, 32, "RX"); -} - -static void print_usage(const char *prog) -{ - printf("Usage: %s [-DsbdlHOLC3]\n", prog); - puts(" -D --device device to use (default /dev/spidev1.1)\n" - " -s --speed max speed (Hz)\n" - " -d --delay delay (usec)\n" - " -b --bpw bits per word \n" - " -l --loop loopback\n" - " -H --cpha clock phase\n" - " -O --cpol clock polarity\n" - " -L --lsb least significant bit first\n" - " -C --cs-high chip select active high\n" - " -3 --3wire SI/SO signals shared\n" - " -v --verbose Verbose (show tx buffer)\n" - " -p Send data (e.g. \"1234\\xde\\xad\")\n" - " -N --no-cs no chip select\n" - " -R --ready slave pulls low to pause\n" - " -2 --dual dual transfer\n" - " -4 --quad quad transfer\n"); - exit(1); -} - -static void parse_opts(int argc, char *argv[]) -{ - while (1) { - static const struct option lopts[] = { - { "device", 1, 0, 'D' }, - { "speed", 1, 0, 's' }, - { "delay", 1, 0, 'd' }, - { "bpw", 1, 0, 'b' }, - { "loop", 0, 0, 'l' }, - { "cpha", 0, 0, 'H' }, - { "cpol", 0, 0, 'O' }, - { "lsb", 0, 0, 'L' }, - { "cs-high", 0, 0, 'C' }, - { "3wire", 0, 0, '3' }, - { "no-cs", 0, 0, 'N' }, - { "ready", 0, 0, 'R' }, - { "dual", 0, 0, '2' }, - { "verbose", 0, 0, 'v' }, - { "quad", 0, 0, '4' }, - { NULL, 0, 0, 0 }, - }; - int c; - - c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24p:v", lopts, NULL); - - if (c == -1) - break; - - switch (c) { - case 'D': - device = optarg; - break; - case 's': - speed = atoi(optarg); - break; - case 'd': - delay = atoi(optarg); - break; - case 'b': - bits = atoi(optarg); - break; - case 'l': - mode |= SPI_LOOP; - break; - case 'H': - mode |= SPI_CPHA; - break; - case 'O': - mode |= SPI_CPOL; - break; - case 'L': - mode |= SPI_LSB_FIRST; - break; - case 'C': - mode |= SPI_CS_HIGH; - break; - case '3': - mode |= SPI_3WIRE; - break; - case 'N': - mode |= SPI_NO_CS; - break; - case 'v': - verbose = 1; - break; - case 'R': - mode |= SPI_READY; - break; - case 'p': - input_tx = optarg; - break; - case '2': - mode |= SPI_TX_DUAL; - break; - case '4': - mode |= SPI_TX_QUAD; - break; - default: - print_usage(argv[0]); - break; - } - } - if (mode & SPI_LOOP) { - if (mode & SPI_TX_DUAL) - mode |= SPI_RX_DUAL; - if (mode & SPI_TX_QUAD) - mode |= SPI_RX_QUAD; - } -} - -int main(int argc, char *argv[]) -{ - int ret = 0; - int fd; - uint8_t *tx; - uint8_t *rx; - int size; - - parse_opts(argc, argv); - - fd = open(device, O_RDWR); - if (fd < 0) - pabort("can't open device"); - - /* - * spi mode - */ - ret = ioctl(fd, SPI_IOC_WR_MODE32, &mode); - if (ret == -1) - pabort("can't set spi mode"); - - ret = ioctl(fd, SPI_IOC_RD_MODE32, &mode); - if (ret == -1) - pabort("can't get spi mode"); - - /* - * bits per word - */ - ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, &bits); - if (ret == -1) - pabort("can't set bits per word"); - - ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits); - if (ret == -1) - pabort("can't get bits per word"); - - /* - * max speed hz - */ - ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed); - if (ret == -1) - pabort("can't set max speed hz"); - - ret = ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed); - if (ret == -1) - pabort("can't get max speed hz"); - - printf("spi mode: 0x%x\n", mode); - printf("bits per word: %d\n", bits); - printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000); - - if (input_tx) { - size = strlen(input_tx+1); - tx = malloc(size); - rx = malloc(size); - size = unescape((char *)tx, input_tx, size); - transfer(fd, tx, rx, size); - free(rx); - free(tx); - } else { - transfer(fd, default_tx, default_rx, sizeof(default_tx)); - } - - close(fd); - - return ret; -} |