Source of spi-dw.c - linux-imx - PHYTEC BitBucket (Stash)

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static inline void dw_spi_debugfs_remove(struct dw_spi *dws)
{
}
#endif /* CONFIG_DEBUG_FS */
​
void dw_spi_set_cs(struct spi_device *spi, bool enable)
{
    struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
    struct chip_data *chip = spi_get_ctldata(spi);
​
    /* Chip select logic is inverted from spi_set_cs() */
    if (chip && chip->cs_control)
        chip->cs_control(!enable);
        chip->cs_control(enable);
​
    if (!enable)
    if (enable)
        dw_writel(dws, DW_SPI_SER, BIT(spi->chip_select));
    else if (dws->cs_override)
        dw_writel(dws, DW_SPI_SER, 0);
}
EXPORT_SYMBOL_GPL(dw_spi_set_cs);
​
/* Return the max entries we can fill into tx fifo */
static inline u32 tx_max(struct dw_spi *dws)
{
    u32 tx_left, tx_room, rxtx_gap;