diff options
Diffstat (limited to 'include/linux/spi/spi.h')
-rw-r--r-- | include/linux/spi/spi.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 98fe8663033a..6d16ba01ff5a 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -423,6 +423,12 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * GPIO descriptors rather than using global GPIO numbers grabbed by the * driver. This will fill in @cs_gpiods and @cs_gpios should not be used, * and SPI devices will have the cs_gpiod assigned rather than cs_gpio. + * @unused_native_cs: When cs_gpiods is used, spi_register_controller() will + * fill in this field with the first unused native CS, to be used by SPI + * controller drivers that need to drive a native CS when using GPIO CS. + * @max_native_cs: When cs_gpiods is used, and this field is filled in, + * spi_register_controller() will validate all native CS (including the + * unused native CS) against this value. * @statistics: statistics for the spi_controller * @dma_tx: DMA transmit channel * @dma_rx: DMA receive channel @@ -624,6 +630,8 @@ struct spi_controller { int *cs_gpios; struct gpio_desc **cs_gpiods; bool use_gpio_descriptors; + u8 unused_native_cs; + u8 max_native_cs; /* statistics */ struct spi_statistics statistics; @@ -689,10 +697,10 @@ extern void spi_finalize_current_transfer(struct spi_controller *ctlr); /* Helper calls for driver to timestamp transfer */ void spi_take_timestamp_pre(struct spi_controller *ctlr, struct spi_transfer *xfer, - const void *tx, bool irqs_off); + size_t progress, bool irqs_off); void spi_take_timestamp_post(struct spi_controller *ctlr, struct spi_transfer *xfer, - const void *tx, bool irqs_off); + size_t progress, bool irqs_off); /* the spi driver core manages memory for the spi_controller classdev */ extern struct spi_controller *__spi_alloc_controller(struct device *host, |