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-rw-r--r--Documentation/spi/.gitignore2
-rw-r--r--Documentation/spi/00-INDEX4
-rw-r--r--Documentation/spi/Makefile8
-rw-r--r--Documentation/spi/spidev_fdx.c158
-rw-r--r--Documentation/spi/spidev_test.c318
5 files changed, 0 insertions, 490 deletions
diff --git a/Documentation/spi/.gitignore b/Documentation/spi/.gitignore
deleted file mode 100644
index 428057639..000000000
--- a/Documentation/spi/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-spidev_fdx
-spidev_test
diff --git a/Documentation/spi/00-INDEX b/Documentation/spi/00-INDEX
index a128fa835..4644bf0d9 100644
--- a/Documentation/spi/00-INDEX
+++ b/Documentation/spi/00-INDEX
@@ -10,13 +10,9 @@ pxa2xx
- PXA2xx SPI master controller build by spi_message fifo wq
spidev
- Intro to the userspace API for spi devices
-spidev_fdx.c
- - spidev example file
spi-lm70llp
- Connecting an LM70-LLP sensor to the kernel via the SPI subsys.
spi-sc18is602
- NXP SC18IS602/603 I2C-bus to SPI bridge
spi-summary
- (Linux) SPI overview. If unsure about SPI or SPI in Linux, start here.
-spidev_test.c
- - SPI testing utility.
diff --git a/Documentation/spi/Makefile b/Documentation/spi/Makefile
deleted file mode 100644
index efa255813..000000000
--- 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 0ea3e5129..000000000
--- 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 135b3f592..000000000
--- 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;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-05 10:06:58 +0000