diff options
Diffstat (limited to 'common/i2c_master.c')
| -rw-r--r-- | common/i2c_master.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/common/i2c_master.c b/common/i2c_master.c index 23164720b5..09d446bf94 100644 --- a/common/i2c_master.c +++ b/common/i2c_master.c @@ -1514,7 +1514,66 @@ static int command_i2cxfer(int argc, char **argv) else rv = i2c_write16(port, addr_flags, offset, v); +#ifdef CONFIG_CMD_I2C_XFER_RAW + } else if (strcasecmp(argv[1], "raw") == 0) { + /* <port> <slave_addr> <read_count> [write_bytes..] */ + int i; + int write_count = 0, read_count = 0; + int xferflags = I2C_XFER_START; + + read_count = offset; + if (read_count < 0 || read_count > sizeof(data)) + return EC_ERROR_PARAM5; + + if (argc >= 6) { + /* Parse bytes to write */ + argc -= 5; + argv += 5; + write_count = argc; + if (write_count > sizeof(data)) { + ccprintf("Too many bytes to write\n"); + return EC_ERROR_PARAM_COUNT; + } + + for (i = 0; i < write_count; i++) { + data[i] = strtoi(argv[i], &e, 0); + if (*e) { + ccprintf("Bad write byte %d\n", i); + return EC_ERROR_INVAL; + } + } + } + if (write_count) { + if (read_count == 0) + xferflags |= I2C_XFER_STOP; + ccprintf("Writing %d bytes\n", write_count); + i2c_lock(port, 1); + rv = i2c_xfer_unlocked(port, + addr_flags, + data, write_count, + NULL, 0, + xferflags); + if (rv || read_count == 0) { + i2c_lock(port, 0); + return rv; + } + } + if (read_count) { + ccprintf("Reading %d bytes\n", read_count); + if (write_count == 0) + i2c_lock(port, 1); + rv = i2c_xfer_unlocked(port, + addr_flags, + NULL, 0, + data, read_count, + I2C_XFER_START | I2C_XFER_STOP); + i2c_lock(port, 0); + if (!rv) + ccprintf("Data: %ph\n", + HEX_BUF(data, read_count)); + } +#endif /* CONFIG_CMD_I2C_XFER_RAW */ } else { return EC_ERROR_PARAM1; } @@ -1522,7 +1581,11 @@ static int command_i2cxfer(int argc, char **argv) return rv; } DECLARE_CONSOLE_COMMAND(i2cxfer, command_i2cxfer, - "r/r16/rlen/w/w16 port addr offset [value | len]", + "r/r16/rlen/w/w16 port addr offset [value | len]" +#ifdef CONFIG_CMD_I2C_XFER_RAW + "\nraw port addr read_count [bytes_to_write..]" +#endif /* CONFIG_CMD_I2C_XFER_RAW */ + , "Read write I2C"); #endif |