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From: Oleksij Rempel <o.rempel@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Subject: [PATCH v1 6/9] spi: port spi_sync_transfer() function from kernel v5.17
Date: Mon, 21 Mar 2022 10:26:03 +0100	[thread overview]
Message-ID: <20220321092606.1459834-7-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20220321092606.1459834-1-o.rempel@pengutronix.de>

This function is needed for SJA11xx switch driver

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 include/spi/spi.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/spi/spi.h b/include/spi/spi.h
index d133e0e212..b6d08592a3 100644
--- a/include/spi/spi.h
+++ b/include/spi/spi.h
@@ -442,6 +442,30 @@ spi_transfer_del(struct spi_transfer *t)
 
 int spi_sync(struct spi_device *spi, struct spi_message *message);
 
+/**
+ * spi_sync_transfer - synchronous SPI data transfer
+ * @spi: device with which data will be exchanged
+ * @xfers: An array of spi_transfers
+ * @num_xfers: Number of items in the xfer array
+ * Context: can sleep
+ *
+ * Does a synchronous SPI data transfer of the given spi_transfer array.
+ *
+ * For more specific semantics see spi_sync().
+ *
+ * Return: zero on success, else a negative error code.
+ */
+static inline int
+spi_sync_transfer(struct spi_device *spi, struct spi_transfer *xfers,
+	unsigned int num_xfers)
+{
+	struct spi_message msg;
+
+	spi_message_init_with_transfers(&msg, xfers, num_xfers);
+
+	return spi_sync(spi, &msg);
+}
+
 struct spi_device *spi_new_device(struct spi_controller *ctrl,
 				  struct spi_board_info *chip);
 int spi_register_controller(struct spi_controller *ctrl);
-- 
2.30.2


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  parent reply	other threads:[~2022-03-21  9:28 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-21  9:25 [PATCH v1 0/9] add basic DSA support Oleksij Rempel
2022-03-21  9:25 ` [PATCH v1 1/9] net: add RX preprocessor support Oleksij Rempel
2022-03-21  9:25 ` [PATCH v1 2/9] net: add of_find_eth_device_by_node() function Oleksij Rempel
2022-03-21  9:26 ` [PATCH v1 3/9] net: add DSA framework to support basic switch functionality Oleksij Rempel
2022-03-25  9:37   ` Oleksij Rempel
2022-03-28 10:31   ` Sascha Hauer
2022-03-28 12:23     ` Oleksij Rempel
2022-03-21  9:26 ` [PATCH v1 4/9] driver: add dev_get_priv() helper Oleksij Rempel
2022-03-21  9:26 ` [PATCH v1 5/9] net: port part of if_vlan header from kernel v5.17 Oleksij Rempel
2022-03-21  9:26 ` Oleksij Rempel [this message]
2022-03-21  9:26 ` [PATCH v1 7/9] net: mdio: add MDIO_DEVAD_NONE define Oleksij Rempel
2022-03-21  9:26 ` [PATCH v1 8/9] net: phy: make sure MDIO bus is probed if we search for the PHY Oleksij Rempel
2022-03-21  9:26 ` [PATCH v1 9/9] net: dsa: add support for SJA11xx switches Oleksij Rempel
2022-03-28 10:40   ` Sascha Hauer

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