Import the spi_controller set_cs_timing() hook to make it easier to port
code from the Linux.
Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
include/spi/spi.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/spi/spi.h b/include/spi/spi.h
index 8354b7d8baa6..092eacd4a8e1 100644
--- a/include/spi/spi.h
+++ b/include/spi/spi.h
@@ -179,6 +179,9 @@ static inline void spi_set_ctldata(struct spi_device *spi, void *state)
* must fail if an unrecognized or unsupported mode is requested.
* It's always safe to call this unless transfers are pending on
* the device whose settings are being modified.
+ * @set_cs_timing: optional hook for SPI devices to request SPI master
+ * controller for configuring specific CS setup time, hold time and inactive
+ * delay interms of clock counts
* @transfer: adds a message to the controller's transfer queue.
* @cleanup: frees controller-specific state
* @cs_gpiods: Array of GPIO descriptors to use as chip select lines; one per CS
@@ -246,6 +249,16 @@ struct spi_controller {
/* setup mode and clock, etc (spi driver may call many times) */
int (*setup)(struct spi_device *spi);
+ /*
+ * set_cs_timing() method is for SPI controllers that supports
+ * configuring CS timing.
+ *
+ * This hook allows SPI client drivers to request SPI controllers
+ * to configure specific CS timing through spi_set_cs_timing() after
+ * spi_setup().
+ */
+ int (*set_cs_timing)(struct spi_device *spi);
+
/* bidirectional bulk transfers
*
* + The transfer() method may not sleep; its main role is
--
2.39.5
