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spi: spidev_test: Add support for Octal mode data transfers

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Add support for octal transfers using the -8/--octal command line
parameter.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200416101835.14573-3-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Geert Uytterhoeven 2020-04-16 12:18:35 +02:00 committed by Mark Brown
parent 66ec7b3bc9
commit 896fa73508
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 16 additions and 5 deletions
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21
tools/spi/spidev_test.c
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@ -128,18 +128,22 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
.bits_per_word = bits,
};
if (mode & SPI_TX_QUAD)
if (mode & SPI_TX_OCTAL)
tr.tx_nbits = 8;
else if (mode & SPI_TX_QUAD)
tr.tx_nbits = 4;
else if (mode & SPI_TX_DUAL)
tr.tx_nbits = 2;
if (mode & SPI_RX_QUAD)
if (mode & SPI_RX_OCTAL)
tr.rx_nbits = 8;
else 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))
if (mode & (SPI_TX_OCTAL | SPI_TX_QUAD | SPI_TX_DUAL))
tr.rx_buf = 0;
else if (mode & (SPI_RX_QUAD | SPI_RX_DUAL))
else if (mode & (SPI_RX_OCTAL | SPI_RX_QUAD | SPI_RX_DUAL))
tr.tx_buf = 0;
}
@ -187,6 +191,7 @@ static void print_usage(const char *prog)
" -R --ready slave pulls low to pause\n"
" -2 --dual dual transfer\n"
" -4 --quad quad transfer\n"
" -8 --octal octal transfer\n"
" -S --size transfer size\n"
" -I --iter iterations\n");
exit(1);
@ -213,13 +218,14 @@ static void parse_opts(int argc, char *argv[])
{ "dual", 0, 0, '2' },
{ "verbose", 0, 0, 'v' },
{ "quad", 0, 0, '4' },
{ "octal", 0, 0, '8' },
{ "size", 1, 0, 'S' },
{ "iter", 1, 0, 'I' },
{ NULL, 0, 0, 0 },
};
int c;
c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR24p:vS:I:",
c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR248p:vS:I:",
lopts, NULL);
if (c == -1)
@ -280,6 +286,9 @@ static void parse_opts(int argc, char *argv[])
case '4':
mode |= SPI_TX_QUAD;
break;
case '8':
mode |= SPI_TX_OCTAL;
break;
case 'S':
transfer_size = atoi(optarg);
break;
@ -295,6 +304,8 @@ static void parse_opts(int argc, char *argv[])
mode |= SPI_RX_DUAL;
if (mode & SPI_TX_QUAD)
mode |= SPI_RX_QUAD;
if (mode & SPI_TX_OCTAL)
mode |= SPI_RX_OCTAL;
}
}