tools/spi/spidev_test.c

39 static uint32_t mode;
131 	if (mode & SPI_TX_OCTAL)
133 	else if (mode & SPI_TX_QUAD)
135 	else if (mode & SPI_TX_DUAL)
137 	if (mode & SPI_RX_OCTAL)
139 	else if (mode & SPI_RX_QUAD)
141 	else if (mode & SPI_RX_DUAL)
143 	if (!(mode & SPI_LOOP)) {
144 		if (mode & (SPI_TX_OCTAL | SPI_TX_QUAD | SPI_TX_DUAL))
146 		else if (mode & (SPI_RX_OCTAL | SPI_RX_QUAD | SPI_RX_DUAL))
181 		 "spi mode:\n"
266 			mode |= SPI_LOOP;
269 			mode |= SPI_CPHA;
272 			mode |= SPI_CPOL;
275 			mode |= SPI_LSB_FIRST;
278 			mode |= SPI_CS_HIGH;
281 			mode |= SPI_3WIRE;
284 			mode |= SPI_3WIRE_HIZ;
287 			mode |= SPI_RX_CPHA_FLIP;
290 			mode |= SPI_MOSI_IDLE_LOW;
293 			mode |= SPI_NO_CS;
299 			mode |= SPI_READY;
305 			mode |= SPI_TX_DUAL;
308 			mode |= SPI_TX_QUAD;
311 			mode |= SPI_TX_OCTAL;
323 	if (mode & SPI_LOOP) {
324 		if (mode & SPI_TX_DUAL)
325 			mode |= SPI_RX_DUAL;
326 		if (mode & SPI_TX_QUAD)
327 			mode |= SPI_RX_QUAD;
328 		if (mode & SPI_TX_OCTAL)
329 			mode |= SPI_RX_OCTAL;
424 	if (mode & SPI_LOOP) {
453 	 * spi mode
455 	/* WR is make a request to assign 'mode' */
456 	request = mode;
457 	ret = ioctl(fd, SPI_IOC_WR_MODE32, &mode);
459 		pabort("can't set spi mode");
461 	/* RD is read what mode the device actually is in */
462 	ret = ioctl(fd, SPI_IOC_RD_MODE32, &mode);
464 		pabort("can't get spi mode");
465 	/* Drivers can reject some mode bits without returning an error.
466 	 * Read the current value to identify what mode it is in, and if it
467 	 * differs from the requested mode, warn the user.
469 	if (request != mode)
470 		printf("WARNING device does not support requested mode 0x%x\n",
495 	printf("spi mode: 0x%x\n", mode);