spi: spidev_test Add three missing spi mode bits

Added the three missing spi mode bits SPI_3WIRE_HIZ, SPI_RX_CPHA_FLIP,
and SPI_MOSI_IDLE_LOW.

Signed-off-by: Boerge Struempfel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: BoergeSt

tools/spi/spidev_test.c

@@ -172,7 +172,7 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
 
 static void print_usage(const char *prog)
 {
-	printf("Usage: %s [-2348CDHILNORSbdilopsv]\n", prog);
+	printf("Usage: %s [-2348CDFHILMNORSZbdilopsv]\n", prog);
 	puts("general device settings:\n"
 		 "  -D --device         device to use (default /dev/spidev1.1)\n"
 		 "  -s --speed          max speed (Hz)\n"
@@ -181,11 +181,13 @@ static void print_usage(const char *prog)
 		 "spi mode:\n"
 		 "  -H --cpha           clock phase\n"
 		 "  -O --cpol           clock polarity\n"
+		 "  -F --rx-cpha-flip   flip CPHA on Rx only xfer\n"
 		 "number of wires for transmission:\n"
 		 "  -2 --dual           dual transfer\n"
 		 "  -4 --quad           quad transfer\n"
 		 "  -8 --octal          octal transfer\n"
 		 "  -3 --3wire          SI/SO signals shared\n"
+		 "  -Z --3wire-hiz      high impedance turnaround\n"
 		 "data:\n"
 		 "  -i --input          input data from a file (e.g. \"test.bin\")\n"
 		 "  -o --output         output data to a file (e.g. \"results.bin\")\n"
@@ -198,6 +200,7 @@ static void print_usage(const char *prog)
 		 "  -C --cs-high        chip select active high\n"
 		 "  -N --no-cs          no chip select\n"
 		 "  -R --ready          slave pulls low to pause\n"
+		 "  -M --mosi-idle-low  leave mosi line low when idle\n"
 		 "misc:\n"
 		 "  -v --verbose        Verbose (show tx buffer)\n");
 	exit(1);
@@ -213,10 +216,12 @@ static void parse_opts(int argc, char *argv[])
 			{ "loop",          0, 0, 'l' },
 			{ "cpha",          0, 0, 'H' },
 			{ "cpol",          0, 0, 'O' },
+			{ "rx-cpha-flip",  0, 0, 'F' },
 			{ "dual",          0, 0, '2' },
 			{ "quad",          0, 0, '4' },
 			{ "octal",         0, 0, '8' },
 			{ "3wire",         0, 0, '3' },
+			{ "3wire-hiz",     0, 0, 'Z' },
 			{ "input",         1, 0, 'i' },
 			{ "output",        1, 0, 'o' },
 			{ "size",          1, 0, 'S' },
@@ -226,12 +231,13 @@ static void parse_opts(int argc, char *argv[])
 			{ "cs-high",       0, 0, 'C' },
 			{ "no-cs",         0, 0, 'N' },
 			{ "ready",         0, 0, 'R' },
+			{ "mosi-idle-low", 0, 0, 'M' },
 			{ "verbose",       0, 0, 'v' },
 			{ NULL, 0, 0, 0 },
 		};
 		int c;
 
-		c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR248p:vS:I:",
+		c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3ZFMNR248p:vS:I:",
 				lopts, NULL);
 
 		if (c == -1)
@@ -274,6 +280,15 @@ static void parse_opts(int argc, char *argv[])
 		case '3':
 			mode |= SPI_3WIRE;
 			break;
+		case 'Z':
+			mode |= SPI_3WIRE_HIZ;
+			break;
+		case 'F':
+			mode |= SPI_RX_CPHA_FLIP;
+			break;
+		case 'M':
+			mode |= SPI_MOSI_IDLE_LOW;
+			break;
 		case 'N':
 			mode |= SPI_NO_CS;
 			break;