aboutsummaryrefslogtreecommitdiff
path: root/toys/pending
diff options
context:
space:
mode:
Diffstat (limited to 'toys/pending')
-rw-r--r--toys/pending/i2ctools.c312
1 files changed, 0 insertions, 312 deletions
diff --git a/toys/pending/i2ctools.c b/toys/pending/i2ctools.c
deleted file mode 100644
index c1936aaf..00000000
--- a/toys/pending/i2ctools.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/* i2ctools.c - i2c tools
- *
- * Copyright 2018 The Android Open Source Project
- *
- * https://www.kernel.org/doc/Documentation/i2c/
- *
- * Note: -y must have the same value in each toy for `confirm`.
- *
- * TODO: i2cdetect -q/-r and the "auto" mode?
- * TODO: i2cdump non-byte modes, -r FIRST-LAST?
- * TODO: i2cget non-byte modes? default to current read address?
- * TODO: i2cset -r? -m MASK? c/s modes, p mode modifier?
-
-USE_I2CDETECT(NEWTOY(i2cdetect, ">3aFly", TOYFLAG_USR|TOYFLAG_BIN))
-USE_I2CDUMP(NEWTOY(i2cdump, "<2>2fy", TOYFLAG_USR|TOYFLAG_BIN))
-USE_I2CGET(NEWTOY(i2cget, "<3>3fy", TOYFLAG_USR|TOYFLAG_BIN))
-USE_I2CSET(NEWTOY(i2cset, "<4fy", TOYFLAG_USR|TOYFLAG_BIN))
-
-config I2CDETECT
- bool "i2cdetect"
- default n
- help
- usage: i2cdetect [-ary] BUS [FIRST LAST]
- usage: i2cdetect -F BUS
- usage: i2cdetect -l
-
- Detects i2c devices.
-
- -a All addresses (0x00-0x7f rather than 0x03-0x77)
- -F Show functionality
- -l List all buses
- -r Probe with SMBus Read Byte
- -y Answer "yes" to confirmation prompts (for script use)
-
-config I2CDUMP
- bool "i2cdump"
- default n
- help
- usage: i2cdump [-fy] BUS CHIP
-
- Dumps i2c registers.
-
- -f Force access to busy devices
- -y Answer "yes" to confirmation prompts (for script use)
-
-config I2CGET
- bool "i2cget"
- default n
- help
- usage: i2cget [-fy] BUS CHIP ADDR [MODE]
-
- Reads an i2c register.
-
- -f Force access to busy devices
- -y Answer "yes" to confirmation prompts (for script use)
-
-config I2CSET
- bool "i2cset"
- default n
- help
- usage: i2cset [-fy] BUS CHIP ADDR VALUE... MODE
-
- Writes an i2c register. MODE is b for byte, w for 16-bit word, i for I2C block.
-
- -f Force access to busy devices
- -y Answer "yes" to confirmation prompts (for script use)
-*/
-
-#define FOR_i2cdetect
-#include "toys.h"
-
-#include <linux/i2c.h>
-#include <linux/i2c-dev.h>
-
-printf_format static void confirm(const char *fmt, ...)
-{
- va_list va;
-
- if (toys.optflags & FLAG_y) return;
-
- va_start(va, fmt);
- vfprintf(stderr, fmt, va);
- va_end(va);
- if (!yesno(1)) error_exit("Exiting");
-}
-
-static int i2c_open(int bus, int slave, int chip)
-{
- int fd;
-
- snprintf(toybuf, sizeof(toybuf), "/dev/i2c-%d", bus);
- fd = xopen(toybuf, O_RDONLY);
- if (slave) xioctl(fd, slave, (void *)(long)chip);
- return fd;
-}
-
-static unsigned long i2c_get_funcs(int bus)
-{
- int fd = i2c_open(bus, 0, 0);
- unsigned long result;
-
- xioctl(fd, I2C_FUNCS, &result);
- close(fd);
- return result;
-}
-
-static int i2c_read_byte(int fd, int addr, int *byte)
-{
- struct i2c_smbus_ioctl_data ioctl_data;
- union i2c_smbus_data data;
-
- memset(&data, 0, sizeof(data));
- ioctl_data.read_write = I2C_SMBUS_READ;
- ioctl_data.size = I2C_SMBUS_BYTE_DATA;
- ioctl_data.command = addr;
- ioctl_data.data = &data;
- if (ioctl(fd, I2C_SMBUS, &ioctl_data) == -1) return -1;
- *byte = data.byte;
- return 0;
-}
-
-static void i2cdetect_dash_F(int bus)
-{
- struct { int mask; const char *name; } funcs[] = {
- {I2C_FUNC_I2C, "I2C"},
- {I2C_FUNC_SMBUS_QUICK, "SMBus Quick Command"},
- {I2C_FUNC_SMBUS_WRITE_BYTE, "SMBus Send Byte"},
- {I2C_FUNC_SMBUS_READ_BYTE, "SMBus Receive Byte"},
- {I2C_FUNC_SMBUS_WRITE_BYTE_DATA, "SMBus Write Byte"},
- {I2C_FUNC_SMBUS_READ_BYTE_DATA, "SMBus Read Byte"},
- {I2C_FUNC_SMBUS_WRITE_WORD_DATA, "SMBus Write Word"},
- {I2C_FUNC_SMBUS_READ_WORD_DATA, "SMBus Read Word"},
- {I2C_FUNC_SMBUS_PROC_CALL, "SMBus Process Call"},
- {I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, "SMBus Write Block"},
- {I2C_FUNC_SMBUS_READ_BLOCK_DATA, "SMBus Read Block"},
- {I2C_FUNC_SMBUS_BLOCK_PROC_CALL, "SMBus Block Process Call"},
- {I2C_FUNC_SMBUS_PEC, "SMBus PEC"},
- {I2C_FUNC_SMBUS_WRITE_I2C_BLOCK, "I2C Write Block"},
- {I2C_FUNC_SMBUS_READ_I2C_BLOCK, "I2C Read Block"},
- };
- unsigned long supported = i2c_get_funcs(bus);
-
- printf("Functionalities implemented by %s:\n", toybuf);
- for (size_t i = 0; i < ARRAY_LEN(funcs); ++i) {
- printf("%-32s %s\n", funcs[i].name,
- (supported & funcs[i].mask) ? "yes" : "no");
- }
-}
-
-static int i2cdetect_dash_l(struct dirtree *node)
-{
- int suffix_len = strlen("/name");
- int bus;
- char *fname, *p;
- unsigned long funcs;
-
- if (!node->parent) return DIRTREE_RECURSE; // Skip the directory itself.
-
- if (sscanf(node->name, "i2c-%d", &bus) != 1) return 0;
- funcs = i2c_get_funcs(bus);
-
- fname = dirtree_path(node, &suffix_len);
- strcat(fname, "/name");
- xreadfile(fname, toybuf, sizeof(toybuf));
- free(fname);
- if ((p = strchr(toybuf, '\n'))) *p = 0;
-
- // "i2c-1 i2c Synopsys DesignWare I2C adapter I2C adapter"
- printf("%s\t%-10s\t%-32s\t%s\n", node->name,
- (funcs & I2C_FUNC_I2C) ? "i2c" : "?",
- toybuf,
- (funcs & I2C_FUNC_I2C) ? "I2C Adapter" : "?");
-
- return 0;
-}
-
-void i2cdetect_main(void)
-{
- if (toys.optflags & FLAG_l) {
- if (toys.optc) error_exit("-l doesn't take arguments");
- dirtree_read("/sys/class/i2c-dev", i2cdetect_dash_l);
- } else if (toys.optflags & FLAG_F) {
- if (toys.optc != 1) error_exit("-F BUS");
- i2cdetect_dash_F(atolx_range(*toys.optargs, 0, INT_MAX));
- } else {
- int bus, first = 0x03, last = 0x77, fd, row, addr, byte;
-
- if (toys.optflags & FLAG_a) {
- first = 0x00;
- last = 0x7f;
- }
-
- if (toys.optc != 1 && toys.optc != 3) error_exit("bad args");
- bus = atolx_range(*toys.optargs, 0, INT_MAX);
- if (toys.optc == 3) {
- first = atolx_range(toys.optargs[1], 0, 0x7f);
- last = atolx_range(toys.optargs[1], 0, 0x7f);
- if (first > last) error_exit("first > last");
- }
-
- confirm("Probe chips 0x%02x-0x%02x on bus %d?", first, last, bus);
-
- fd = i2c_open(bus, 0, 0);
- printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n");
- for (row = 0; row <= 0x70; row += 16) {
- xprintf("%02x:", row & 0xf0);
- for (addr = row; addr < row + 16; ++addr) {
- if (addr < first || addr > last) printf(" ");
- else {
- if (ioctl(fd, I2C_SLAVE, addr) == -1) {
- if (errno == EBUSY) {
- xprintf(" UU");
- continue;
- }
- perror_exit("ioctl(I2C_SLAVE)");
- }
- if (i2c_read_byte(fd, addr, &byte) == -1) xprintf(" --");
- else xprintf(" %02x", addr);
- }
- }
- putchar('\n');
- }
- close(fd);
- }
-}
-
-#define CLEANUP_i2cdetect
-#define FOR_i2cdump
-#include "generated/flags.h"
-
-void i2cdump_main(void)
-{
- int bus = atolx_range(toys.optargs[0], 0, INT_MAX);
- int chip = atolx_range(toys.optargs[1], 0, 0x7f);
- int fd, row, addr, byte;
-
- confirm("Dump chip 0x%02x on bus %d?", chip, bus);
-
- fd = i2c_open(bus, (toys.optflags&FLAG_f)?I2C_SLAVE_FORCE:I2C_SLAVE, chip);
- printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef\n");
- for (row = 0; row <= 0xf0; row += 16) {
- xprintf("%02x:", row & 0xf0);
- for (addr = row; addr < row + 16; ++addr) {
- if (i2c_read_byte(fd, addr, &byte) == -1) perror_exit("i2c_read_byte");
- printf(" %02x", byte);
- toybuf[addr-row] = isprint(byte) ? byte : (byte ? '?' : '.');
- }
- printf(" %16.16s\n", toybuf);
- }
- close(fd);
-}
-
-#define CLEANUP_i2cdump
-#define FOR_i2cget
-#include "generated/flags.h"
-
-void i2cget_main(void)
-{
- int bus = atolx_range(toys.optargs[0], 0, INT_MAX);
- int chip = atolx_range(toys.optargs[1], 0, 0x7f);
- int addr = atolx_range(toys.optargs[2], 0, 0xff);
- int fd, byte;
-
- confirm("Read register 0x%02x from chip 0x%02x on bus %d?", addr, chip, bus);
-
- fd = i2c_open(bus, (toys.optflags&FLAG_f)?I2C_SLAVE_FORCE:I2C_SLAVE, chip);
- if (i2c_read_byte(fd, addr, &byte) == -1) perror_exit("i2c_read_byte");
- printf("0x%02x\n", byte);
- close(fd);
-}
-
-#define CLEANUP_i2cget
-#define FOR_i2cset
-#include "generated/flags.h"
-
-void i2cset_main(void)
-{
- int bus = atolx_range(toys.optargs[0], 0, INT_MAX);
- int chip = atolx_range(toys.optargs[1], 0, 0x7f);
- int addr = atolx_range(toys.optargs[2], 0, 0xff);
- char *mode = toys.optargs[toys.optc-1];
- int fd, i;
- struct i2c_smbus_ioctl_data ioctl_data;
- union i2c_smbus_data data;
-
- memset(&data, 0, sizeof(data));
- if (strlen(mode) != 1) help_exit("mode too long");
- if (*mode == 'b' && toys.optc == 5) {
- ioctl_data.size = I2C_SMBUS_BYTE_DATA;
- data.byte = atolx_range(toys.optargs[3], 0, 0xff);
- } else if (*mode == 'w' && toys.optc == 5) {
- ioctl_data.size = I2C_SMBUS_WORD_DATA;
- data.word = atolx_range(toys.optargs[3], 0, 0xffff);
- } else if (*mode == 'i' && toys.optc >= 5) {
- if (toys.optc - 4 > I2C_SMBUS_BLOCK_MAX) error_exit("too much data");
- ioctl_data.size = I2C_SMBUS_I2C_BLOCK_DATA;
- for (i = 0; i < toys.optc - 4; ++i)
- data.block[i+1] = atolx_range(toys.optargs[3+i], 0, 0xff);
- data.block[0] = toys.optc - 4;
- } else {
- help_exit("syntax error");
- }
-
- confirm("Write register 0x%02x from chip 0x%02x on bus %d?", addr, chip, bus);
-
- fd = i2c_open(bus, (toys.optflags&FLAG_f)?I2C_SLAVE_FORCE:I2C_SLAVE, chip);
- ioctl_data.read_write = I2C_SMBUS_WRITE;
- ioctl_data.command = addr;
- ioctl_data.data = &data;
- xioctl(fd, I2C_SMBUS, &ioctl_data);
- close(fd);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 16:20:21 +0000