46 	struct spi_device	*spi = to_spi_device(dev);  in spidev_release()  local
49 	if (spi->master->cleanup)  in spidev_release()
50 		spi->master->cleanup(spi);  in spidev_release()
52 	spi_master_put(spi->master);  in spidev_release()
53 	kfree(spi);  in spidev_release()
59 	const struct spi_device	*spi = to_spi_device(dev);  in modalias_show()  local
66 	return sprintf(buf, "%s%s\n", SPI_MODULE_PREFIX, spi->modalias);  in modalias_show()
101 	const struct spi_device	*spi = to_spi_device(dev);  in spi_match_device()  local
113 		return !!spi_match_id(sdrv->id_table, spi);  in spi_match_device()
115 	return strcmp(spi->modalias, drv->name) == 0;  in spi_match_device()
120 	const struct spi_device		*spi = to_spi_device(dev);  in spi_uevent()  local
127 	add_uevent_var(env, "MODALIAS=%s%s", SPI_MODULE_PREFIX, spi->modalias);  in spi_uevent()
236 	struct spi_device	*spi;  in spi_alloc_device()  local
241 	spi = kzalloc(sizeof(*spi), GFP_KERNEL);  in spi_alloc_device()
242 	if (!spi) {  in spi_alloc_device()
247 	spi->master = master;  in spi_alloc_device()
248 	spi->dev.parent = &master->dev;  in spi_alloc_device()
249 	spi->dev.bus = &spi_bus_type;  in spi_alloc_device()
250 	spi->dev.release = spidev_release;  in spi_alloc_device()
251 	spi->cs_gpio = -ENOENT;  in spi_alloc_device()
252 	device_initialize(&spi->dev);  in spi_alloc_device()
253 	return spi;  in spi_alloc_device()
257 static void spi_dev_set_name(struct spi_device *spi)  in spi_dev_set_name()  argument
259 	struct acpi_device *adev = ACPI_COMPANION(&spi->dev);  in spi_dev_set_name()
262 		dev_set_name(&spi->dev, "spi-%s", acpi_dev_name(adev));  in spi_dev_set_name()
266 	dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev),  in spi_dev_set_name()
267 		     spi->chip_select);  in spi_dev_set_name()
272 	struct spi_device *spi = to_spi_device(dev);  in spi_dev_check()  local
275 	if (spi->master == new_spi->master &&  in spi_dev_check()
276 	    spi->chip_select == new_spi->chip_select)  in spi_dev_check()
290 int spi_add_device(struct spi_device *spi)  in spi_add_device()  argument
293 	struct spi_master *master = spi->master;  in spi_add_device()
298 	if (spi->chip_select >= master->num_chipselect) {  in spi_add_device()
300 			spi->chip_select,  in spi_add_device()
306 	spi_dev_set_name(spi);  in spi_add_device()
314 	status = bus_for_each_dev(&spi_bus_type, NULL, spi, spi_dev_check);  in spi_add_device()
317 				spi->chip_select);  in spi_add_device()
322 		spi->cs_gpio = master->cs_gpios[spi->chip_select];  in spi_add_device()
328 	status = spi_setup(spi);  in spi_add_device()
331 				dev_name(&spi->dev), status);  in spi_add_device()
336 	status = device_add(&spi->dev);  in spi_add_device()
339 				dev_name(&spi->dev), status);  in spi_add_device()
341 		dev_dbg(dev, "registered child %s\n", dev_name(&spi->dev));  in spi_add_device()
462 static void spi_set_cs(struct spi_device *spi, bool enable)  in spi_set_cs()  argument
464 	if (spi->mode & SPI_CS_HIGH)  in spi_set_cs()
467 	if (spi->cs_gpio >= 0)  in spi_set_cs()
468 		gpio_set_value(spi->cs_gpio, !enable);  in spi_set_cs()
469 	else if (spi->master->set_cs)  in spi_set_cs()
470 		spi->master->set_cs(spi, !enable);  in spi_set_cs()
546 		if (!master->can_dma(master, msg->spi, xfer))  in __spi_map_msg()
595 		if (!master->can_dma(master, msg->spi, xfer))  in spi_unmap_msg()
683 	spi_set_cs(msg->spi, true);  in spi_transfer_one_message()
691 			ret = master->transfer_one(master, msg->spi, xfer);  in spi_transfer_one_message()
693 				dev_err(&msg->spi->dev,  in spi_transfer_one_message()
708 				dev_err(&msg->spi->dev,  in spi_transfer_one_message()
714 				dev_err(&msg->spi->dev,  in spi_transfer_one_message()
732 				spi_set_cs(msg->spi, false);  in spi_transfer_one_message()
734 				spi_set_cs(msg->spi, true);  in spi_transfer_one_message()
743 		spi_set_cs(msg->spi, false);  in spi_transfer_one_message()
1095 static int __spi_queued_transfer(struct spi_device *spi,  in __spi_queued_transfer()  argument
1099 	struct spi_master *master = spi->master;  in __spi_queued_transfer()
1124 static int spi_queued_transfer(struct spi_device *spi, struct spi_message *msg)  in spi_queued_transfer()  argument
1126 	return __spi_queued_transfer(spi, msg, true);  in spi_queued_transfer()
1164 	struct spi_device *spi;  in of_register_spi_device()  local
1169 	spi = spi_alloc_device(master);  in of_register_spi_device()
1170 	if (!spi) {  in of_register_spi_device()
1178 	rc = of_modalias_node(nc, spi->modalias,  in of_register_spi_device()
1179 				sizeof(spi->modalias));  in of_register_spi_device()
1193 	spi->chip_select = value;  in of_register_spi_device()
1197 		spi->mode |= SPI_CPHA;  in of_register_spi_device()
1199 		spi->mode |= SPI_CPOL;  in of_register_spi_device()
1201 		spi->mode |= SPI_CS_HIGH;  in of_register_spi_device()
1203 		spi->mode |= SPI_3WIRE;  in of_register_spi_device()
1205 		spi->mode |= SPI_LSB_FIRST;  in of_register_spi_device()
1213 			spi->mode |= SPI_TX_DUAL;  in of_register_spi_device()
1216 			spi->mode |= SPI_TX_QUAD;  in of_register_spi_device()
1231 			spi->mode |= SPI_RX_DUAL;  in of_register_spi_device()
1234 			spi->mode |= SPI_RX_QUAD;  in of_register_spi_device()
1251 	spi->max_speed_hz = value;  in of_register_spi_device()
1254 	spi->irq = irq_of_parse_and_map(nc, 0);  in of_register_spi_device()
1258 	spi->dev.of_node = nc;  in of_register_spi_device()
1261 	rc = spi_add_device(spi);  in of_register_spi_device()
1268 	return spi;  in of_register_spi_device()
1271 	spi_dev_put(spi);  in of_register_spi_device()
1284 	struct spi_device *spi;  in of_register_spi_devices()  local
1291 		spi = of_register_spi_device(master, nc);  in of_register_spi_devices()
1292 		if (IS_ERR(spi))  in of_register_spi_devices()
1304 	struct spi_device *spi = data;  in acpi_spi_add_resource()  local
1311 			spi->chip_select = sb->device_selection;  in acpi_spi_add_resource()
1312 			spi->max_speed_hz = sb->connection_speed;  in acpi_spi_add_resource()
1315 				spi->mode |= SPI_CPHA;  in acpi_spi_add_resource()
1317 				spi->mode |= SPI_CPOL;  in acpi_spi_add_resource()
1319 				spi->mode |= SPI_CS_HIGH;  in acpi_spi_add_resource()
1321 	} else if (spi->irq < 0) {  in acpi_spi_add_resource()
1325 			spi->irq = r.start;  in acpi_spi_add_resource()
1338 	struct spi_device *spi;  in acpi_spi_add_device()  local
1346 	spi = spi_alloc_device(master);  in acpi_spi_add_device()
1347 	if (!spi) {  in acpi_spi_add_device()
1353 	ACPI_COMPANION_SET(&spi->dev, adev);  in acpi_spi_add_device()
1354 	spi->irq = -1;  in acpi_spi_add_device()
1358 				     acpi_spi_add_resource, spi);  in acpi_spi_add_device()
1361 	if (ret < 0 || !spi->max_speed_hz) {  in acpi_spi_add_device()
1362 		spi_dev_put(spi);  in acpi_spi_add_device()
1367 	strlcpy(spi->modalias, acpi_device_hid(adev), sizeof(spi->modalias));  in acpi_spi_add_device()
1368 	if (spi_add_device(spi)) {  in acpi_spi_add_device()
1372 		spi_dev_put(spi);  in acpi_spi_add_device()
1750 int spi_setup(struct spi_device *spi)  in spi_setup()  argument
1757 	if (((spi->mode & SPI_TX_DUAL) && (spi->mode & SPI_TX_QUAD)) ||  in spi_setup()
1758 		((spi->mode & SPI_RX_DUAL) && (spi->mode & SPI_RX_QUAD))) {  in spi_setup()
1759 		dev_err(&spi->dev,  in spi_setup()
1765 	if ((spi->mode & SPI_3WIRE) && (spi->mode &  in spi_setup()
1771 	bad_bits = spi->mode & ~spi->master->mode_bits;  in spi_setup()
1775 		dev_warn(&spi->dev,  in spi_setup()
1778 		spi->mode &= ~ugly_bits;  in spi_setup()
1782 		dev_err(&spi->dev, "setup: unsupported mode bits %x\n",  in spi_setup()
1787 	if (!spi->bits_per_word)  in spi_setup()
1788 		spi->bits_per_word = 8;  in spi_setup()
1790 	if (!spi->max_speed_hz)  in spi_setup()
1791 		spi->max_speed_hz = spi->master->max_speed_hz;  in spi_setup()
1793 	spi_set_cs(spi, false);  in spi_setup()
1795 	if (spi->master->setup)  in spi_setup()
1796 		status = spi->master->setup(spi);  in spi_setup()
1798 	dev_dbg(&spi->dev, "setup mode %d, %s%s%s%s%u bits/w, %u Hz max --> %d\n",  in spi_setup()
1799 			(int) (spi->mode & (SPI_CPOL | SPI_CPHA)),  in spi_setup()
1800 			(spi->mode & SPI_CS_HIGH) ? "cs_high, " : "",  in spi_setup()
1801 			(spi->mode & SPI_LSB_FIRST) ? "lsb, " : "",  in spi_setup()
1802 			(spi->mode & SPI_3WIRE) ? "3wire, " : "",  in spi_setup()
1803 			(spi->mode & SPI_LOOP) ? "loopback, " : "",  in spi_setup()
1804 			spi->bits_per_word, spi->max_speed_hz,  in spi_setup()
1811 static int __spi_validate(struct spi_device *spi, struct spi_message *message)  in __spi_validate()  argument
1813 	struct spi_master *master = spi->master;  in __spi_validate()
1826 			|| (spi->mode & SPI_3WIRE)) {  in __spi_validate()
1848 			xfer->bits_per_word = spi->bits_per_word;  in __spi_validate()
1851 			xfer->speed_hz = spi->max_speed_hz;  in __spi_validate()
1899 				!(spi->mode & (SPI_TX_DUAL | SPI_TX_QUAD)))  in __spi_validate()
1902 				!(spi->mode & SPI_TX_QUAD))  in __spi_validate()
1912 				!(spi->mode & (SPI_RX_DUAL | SPI_RX_QUAD)))  in __spi_validate()
1915 				!(spi->mode & SPI_RX_QUAD))  in __spi_validate()
1925 static int __spi_async(struct spi_device *spi, struct spi_message *message)  in __spi_async()  argument
1927 	struct spi_master *master = spi->master;  in __spi_async()
1929 	message->spi = spi;  in __spi_async()
1933 	return master->transfer(spi, message);  in __spi_async()
1965 int spi_async(struct spi_device *spi, struct spi_message *message)  in spi_async()  argument
1967 	struct spi_master *master = spi->master;  in spi_async()
1971 	ret = __spi_validate(spi, message);  in spi_async()
1980 		ret = __spi_async(spi, message);  in spi_async()
2017 int spi_async_locked(struct spi_device *spi, struct spi_message *message)  in spi_async_locked()  argument
2019 	struct spi_master *master = spi->master;  in spi_async_locked()
2023 	ret = __spi_validate(spi, message);  in spi_async_locked()
2029 	ret = __spi_async(spi, message);  in spi_async_locked()
2051 static int __spi_sync(struct spi_device *spi, struct spi_message *message,  in __spi_sync()  argument
2056 	struct spi_master *master = spi->master;  in __spi_sync()
2059 	status = __spi_validate(spi, message);  in __spi_sync()
2065 	message->spi = spi;  in __spi_sync()
2080 		status = __spi_queued_transfer(spi, message, false);  in __spi_sync()
2084 		status = spi_async_locked(spi, message);  in __spi_sync()
2125 int spi_sync(struct spi_device *spi, struct spi_message *message)  in spi_sync()  argument
2127 	return __spi_sync(spi, message, 0);  in spi_sync()
2147 int spi_sync_locked(struct spi_device *spi, struct spi_message *message)  in spi_sync_locked()  argument
2149 	return __spi_sync(spi, message, 1);  in spi_sync_locked()
2231 int spi_write_then_read(struct spi_device *spi,  in spi_write_then_read()  argument
2272 	status = spi_sync(spi, &message);  in spi_write_then_read()
2325 	struct spi_device *spi;  in of_spi_notify()  local
2333 		spi = of_register_spi_device(master, rd->dn);  in of_spi_notify()
2336 		if (IS_ERR(spi)) {  in of_spi_notify()
2339 			return notifier_from_errno(PTR_ERR(spi));  in of_spi_notify()
2345 		spi = of_find_spi_device_by_node(rd->dn);  in of_spi_notify()
2346 		if (spi == NULL)  in of_spi_notify()
2350 		spi_unregister_device(spi);  in of_spi_notify()
2353 		put_device(&spi->dev);  in of_spi_notify()