spi.c File Reference

#include <device/mmio.h>
#include <soc/spi.h>
#include <soc/clock.h>
#include <soc/addressmap.h>
#include "spi_internal.h"

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Functions
static void	spi_tx (volatile struct spi_ctrl *spictrl, uint8_t in)
	Wait until SPI is ready for transmission and transmit byte. More...
static uint8_t	spi_rx (volatile struct spi_ctrl *spictrl)
	Wait until SPI receive queue has data and read byte. More...
static int	spi_claim_bus_ (const struct spi_slave *slave)
static void	spi_release_bus_ (const struct spi_slave *slave)
static int	spi_xfer_ (const struct spi_slave *slave, const void *dout, size_t bytesout, void *din, size_t bytesin)
static int	spi_setup_ (const struct spi_slave *slave)
int	fu540_spi_setup (unsigned int bus, unsigned int cs, struct spi_slave *slave, struct fu540_spi_config *config)
int	fu540_spi_mmap (const struct spi_slave *slave, const struct fu540_spi_mmap_config *config)

Variables
static struct spi_ctrl *	spictrls []
struct spi_ctrlr	fu540_spi_ctrlr
const struct spi_ctrlr_buses	spi_ctrlr_bus_map []
const size_t	spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map)

Function Documentation

fu540_spi_mmap()

int fu540_spi_mmap	(	const struct spi_slave *	slave,
		const struct fu540_spi_mmap_config *	config
	)

Definition at line 213 of file spi.c.

References spi_reg_ffmt::addr_len, spi_reg_ffmt::addr_proto, spi_slave::bus, spi_reg_ffmt::cmd_en, spi_reg_ffmt::command_code, spi_reg_ffmt::command_proto, config, spi_reg_ffmt::data_proto, spi_reg_fctrl::en, spi_ctrl::fctrl, spi_ctrl::ffmt, spi_reg_ffmt::pad_cnt, spi_reg_ffmt::pad_code, spi_reg_fctrl::raw_bits, spi_reg_ffmt::raw_bits, slave, spi_tx(), spictrls, and write32().

Referenced by boot_device_init().

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fu540_spi_setup()

int fu540_spi_setup	(	unsigned int	bus,
		unsigned int	cs,
		struct spi_slave *	slave,
		struct fu540_spi_config *	config
	)

Definition at line 165 of file spi.c.

References spi_slave::bus, clock_get_tlclk_khz(), config, spi_slave::cs, spi_ctrl::csdef, spi_ctrl::csmode, spi_slave::ctrlr, spi_reg_fmt::dir, spi_reg_fmt::endian, spi_ctrl::fmt, FU540_SPI_CSMODE_AUTO, fu540_spi_ctrlr, spi_reg_fmt::len, spi_reg_csmode::mode, spi_reg_sckmode::pha, spi_reg_sckmode::pol, spi_reg_fmt::proto, spi_reg_sckmode::raw_bits, spi_reg_csmode::raw_bits, spi_reg_fmt::raw_bits, spi_ctrl::sckdiv, spi_ctrl::sckmode, slave, spi_min_clk_divisor(), spictrls, and write32().

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spi_claim_bus_()

static int spi_claim_bus_ ( const struct spi_slave *  slave )

static

Definition at line 48 of file spi.c.

References spi_slave::bus, spi_ctrl::csmode, FU540_SPI_CSMODE_HOLD, spi_reg_csmode::mode, spi_reg_csmode::raw_bits, slave, spictrls, and write32().

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spi_release_bus_()

static void spi_release_bus_ ( const struct spi_slave *  slave )

static

Definition at line 58 of file spi.c.

References spi_slave::bus, spi_ctrl::csmode, FU540_SPI_CSMODE_OFF, spi_reg_csmode::mode, spi_reg_csmode::raw_bits, slave, spictrls, and write32().

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spi_rx()

static uint8_t spi_rx ( volatile struct spi_ctrl *  spictrl )

static

Wait until SPI receive queue has data and read byte.

Definition at line 40 of file spi.c.

References spi_reg_rxdata::raw_bits, and spi_ctrl::rxdata.

Referenced by spi_xfer_().

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spi_setup_()

static int spi_setup_ ( const struct spi_slave *  slave )

static

Definition at line 113 of file spi.c.

spi_tx()

static void spi_tx ( volatile struct spi_ctrl *  spictrl, uint8_t  in  )

static

Wait until SPI is ready for transmission and transmit byte.

Definition at line 19 of file spi.c.

References spi_reg_txdata::data, spi_reg_txdata::raw_bits, and spi_ctrl::txdata.

Referenced by fu540_spi_mmap(), and spi_xfer_().

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spi_xfer_()

static int spi_xfer_ ( const struct spi_slave *  slave, const void *  dout, size_t  bytesout, void *  din, size_t  bytesin  )

static

Definition at line 67 of file spi.c.

References spi_slave::bus, spi_ctrl::fmt, FU540_SPI_PROTO_S, spi_reg_fmt::proto, spi_reg_fmt::raw_bits, read32(), slave, spi_rx(), spi_tx(), and spictrls.

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Variable Documentation

fu540_spi_ctrlr

struct spi_ctrlr fu540_spi_ctrlr

Initial value:

= {
        .xfer  = spi_xfer_,
        .setup = spi_setup_,
        .claim_bus = spi_claim_bus_,
        .release_bus = spi_release_bus_,
}

Definition at line 113 of file spi.c.

Referenced by fu540_spi_setup().

spi_ctrlr_bus_map

const struct spi_ctrlr_buses spi_ctrlr_bus_map[]

Initial value:

= {
        {
                .bus_start = 0,
                .bus_end = 2,
                .ctrlr = &fu540_spi_ctrlr,
        }
}

Definition at line 113 of file spi.c.

spi_ctrlr_bus_map_count

const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map)

Definition at line 163 of file spi.c.

spictrls

struct spi_ctrl* spictrls[]

static

Initial value:

= {
        (struct spi_ctrl *)FU540_QSPI0,
        (struct spi_ctrl *)FU540_QSPI1,
        (struct spi_ctrl *)FU540_QSPI2
}

Definition at line 10 of file spi.c.

Referenced by fu540_spi_mmap(), fu540_spi_setup(), spi_claim_bus_(), spi_release_bus_(), and spi_xfer_().