-static struct spi_bus *spi_get_bus(unsigned dev_index)
-{
- if (dev_index < bus_count)
- return &spi_bus[dev_index];
- debug("%s: invalid bus %d", __func__, dev_index);
-
- return NULL;
-}
-
-static inline struct exynos_spi_slave *to_exynos_spi(struct spi_slave *slave)
-{
- return container_of(slave, struct exynos_spi_slave, slave);
-}
-
-/**
- * Setup the driver private data
- *
- * @param bus ID of the bus that the slave is attached to
- * @param cs ID of the chip select connected to the slave
- * @param max_hz Required spi frequency
- * @param mode Required spi mode (clk polarity, clk phase and
- * master or slave)
- * @return new device or NULL
- */
-struct spi_slave *spi_setup_slave(unsigned int busnum, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- struct exynos_spi_slave *spi_slave;
- struct spi_bus *bus;
-
- if (!spi_cs_is_valid(busnum, cs)) {
- debug("%s: Invalid bus/chip select %d, %d\n", __func__,
- busnum, cs);
- return NULL;
- }
-
- spi_slave = spi_alloc_slave(struct exynos_spi_slave, busnum, cs);
- if (!spi_slave) {
- debug("%s: Could not allocate spi_slave\n", __func__);
- return NULL;
- }
-
- bus = &spi_bus[busnum];
- spi_slave->bus = bus;
- spi_slave->regs = bus->regs;
- spi_slave->mode = mode;
- spi_slave->periph_id = bus->periph_id;
- if (bus->periph_id == PERIPH_ID_SPI1 ||
- bus->periph_id == PERIPH_ID_SPI2)
- spi_slave->fifo_size = 64;
- else
- spi_slave->fifo_size = 256;
-
- spi_slave->skip_preamble = 0;
- spi_slave->last_transaction_us = timer_get_us();
-
- spi_slave->freq = bus->frequency;
- if (max_hz)
- spi_slave->freq = min(max_hz, spi_slave->freq);
-
- return &spi_slave->slave;
-}
-
-/**
- * Free spi controller
- *
- * @param slave Pointer to spi_slave to which controller has to
- * communicate with
- */
-void spi_free_slave(struct spi_slave *slave)
-{
- struct exynos_spi_slave *spi_slave = to_exynos_spi(slave);
-
- free(spi_slave);
-}
-