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Diffstat (limited to 'drivers/spi/spi-dw.h')
| -rw-r--r-- | drivers/spi/spi-dw.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 3d32be68c142..1a7f083c2217 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -217,6 +217,18 @@ static inline void spi_umask_intr(struct dw_spi *dws, u32 mask) } /* + * This does disable the SPI controller, interrupts, and re-enable the + * controller back. Transmit and receive FIFO buffers are cleared when the + * device is disabled. + */ +static inline void spi_reset_chip(struct dw_spi *dws) +{ + spi_enable_chip(dws, 0); + spi_mask_intr(dws, 0xff); + spi_enable_chip(dws, 1); +} + +/* * Each SPI slave device to work with dw_api controller should * has such a structure claiming its working mode (PIO/DMA etc), * which can be save in the "controller_data" member of the |